Annotation of loncom/lond, revision 1.572
1.1 albertel 1: #!/usr/bin/perl
2: # The LearningOnline Network
3: # lond "LON Daemon" Server (port "LOND" 5663)
1.60 www 4: #
1.572 ! raeburn 5: # $Id: lond,v 1.571 2021/12/21 13:57:47 raeburn Exp $
1.60 www 6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
1.167 foxr 13: # the Free Software Foundation; either version 2 of the License, or
1.60 www 14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
1.178 foxr 23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
1.60 www 24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
1.161 foxr 27:
28:
1.60 www 29: # http://www.lon-capa.org/
30: #
1.54 harris41 31:
1.134 albertel 32: use strict;
1.80 harris41 33: use lib '/home/httpd/lib/perl/';
1.325 albertel 34: use LONCAPA;
1.80 harris41 35: use LONCAPA::Configuration;
1.490 droeschl 36: use LONCAPA::Lond;
1.80 harris41 37:
1.532 raeburn 38: use Socket;
1.1 albertel 39: use IO::Socket;
40: use IO::File;
1.126 albertel 41: #use Apache::File;
1.1 albertel 42: use POSIX;
43: use Crypt::IDEA;
1.523 raeburn 44: use HTTP::Request;
1.347 raeburn 45: use Digest::MD5 qw(md5_hex);
1.3 www 46: use GDBM_File;
1.91 albertel 47: use Authen::Krb5;
1.49 albertel 48: use localauth;
1.193 raeburn 49: use localenroll;
1.265 albertel 50: use localstudentphoto;
1.143 foxr 51: use File::Copy;
1.292 albertel 52: use File::Find;
1.200 matthew 53: use LONCAPA::lonlocal;
54: use LONCAPA::lonssl;
1.221 albertel 55: use Fcntl qw(:flock);
1.383 raeburn 56: use Apache::lonnet;
1.472 raeburn 57: use Mail::Send;
1.518 raeburn 58: use Crypt::Eksblowfish::Bcrypt;
59: use Digest::SHA;
60: use Encode;
1.523 raeburn 61: use LONCAPA::LWPReq;
1.1 albertel 62:
1.463 foxr 63: my $DEBUG = 0; # Non zero to enable debug log entries.
1.77 foxr 64:
1.57 www 65: my $status='';
66: my $lastlog='';
67:
1.572 ! raeburn 68: my $VERSION='$Revision: 1.571 $'; #' stupid emacs
1.121 albertel 69: my $remoteVERSION;
1.214 foxr 70: my $currenthostid="default";
1.115 albertel 71: my $currentdomainid;
1.134 albertel 72:
73: my $client;
1.200 matthew 74: my $clientip; # IP address of client.
75: my $clientname; # LonCAPA name of client.
1.448 raeburn 76: my $clientversion; # LonCAPA version running on client.
77: my $clienthomedom; # LonCAPA domain of homeID for client.
1.525 raeburn 78: my $clientintdom; # LonCAPA "internet domain" for client.
1.532 raeburn 79: my $clientsamedom; # LonCAPA domain same for this host
80: # and client.
1.525 raeburn 81: my $clientsameinst; # LonCAPA "internet domain" same for
82: # this host and client.
1.556 raeburn 83: my $clientremoteok; # Current domain permits hosting on client
84: # (not set if host and client share "internet domain").
85: # Values are 0 or 1; 1 if allowed.
86: my %clientprohibited; # Commands from client prohibited for domain's
87: # users.
88:
1.134 albertel 89: my $server;
1.200 matthew 90:
91: my $keymode;
1.198 foxr 92:
1.207 foxr 93: my $cipher; # Cipher key negotiated with client
94: my $tmpsnum = 0; # Id of tmpputs.
95:
1.178 foxr 96: #
97: # Connection type is:
98: # client - All client actions are allowed
99: # manager - only management functions allowed.
100: # both - Both management and client actions are allowed
101: #
1.161 foxr 102:
1.178 foxr 103: my $ConnectionType;
1.161 foxr 104:
1.178 foxr 105: my %managers; # Ip -> manager names
1.161 foxr 106:
1.178 foxr 107: my %perlvar; # Will have the apache conf defined perl vars.
1.134 albertel 108:
1.532 raeburn 109: my %secureconf; # Will have requirements for security
110: # of lond connections
111:
1.545 raeburn 112: my %crlchecked; # Will contain clients for which the client's SSL
113: # has been checked against the cluster's Certificate
114: # Revocation List.
115:
1.480 raeburn 116: my $dist;
117:
1.178 foxr 118: #
1.207 foxr 119: # The hash below is used for command dispatching, and is therefore keyed on the request keyword.
120: # Each element of the hash contains a reference to an array that contains:
121: # A reference to a sub that executes the request corresponding to the keyword.
122: # A flag that is true if the request must be encoded to be acceptable.
123: # A mask with bits as follows:
124: # CLIENT_OK - Set when the function is allowed by ordinary clients
125: # MANAGER_OK - Set when the function is allowed to manager clients.
126: #
127: my $CLIENT_OK = 1;
128: my $MANAGER_OK = 2;
129: my %Dispatcher;
130:
131:
132: #
1.178 foxr 133: # The array below are password error strings."
134: #
135: my $lastpwderror = 13; # Largest error number from lcpasswd.
136: my @passwderrors = ("ok",
1.287 foxr 137: "pwchange_failure - lcpasswd must be run as user 'www'",
138: "pwchange_failure - lcpasswd got incorrect number of arguments",
139: "pwchange_failure - lcpasswd did not get the right nubmer of input text lines",
140: "pwchange_failure - lcpasswd too many simultaneous pwd changes in progress",
141: "pwchange_failure - lcpasswd User does not exist.",
142: "pwchange_failure - lcpasswd Incorrect current passwd",
143: "pwchange_failure - lcpasswd Unable to su to root.",
144: "pwchange_failure - lcpasswd Cannot set new passwd.",
145: "pwchange_failure - lcpasswd Username has invalid characters",
146: "pwchange_failure - lcpasswd Invalid characters in password",
147: "pwchange_failure - lcpasswd User already exists",
148: "pwchange_failure - lcpasswd Something went wrong with user addition.",
149: "pwchange_failure - lcpasswd Password mismatch",
150: "pwchange_failure - lcpasswd Error filename is invalid");
1.97 foxr 151:
152:
1.412 foxr 153: # This array are the errors from lcinstallfile:
154:
155: my @installerrors = ("ok",
156: "Initial user id of client not that of www",
157: "Usage error, not enough command line arguments",
1.500 bisitz 158: "Source filename does not exist",
159: "Destination filename does not exist",
1.412 foxr 160: "Some file operation failed",
161: "Invalid table filename."
162: );
1.207 foxr 163:
164: #
1.525 raeburn 165: # The %trust hash classifies commands according to type of trust
166: # required for execution of the command.
167: #
168: # When clients from a different institution request execution of a
169: # particular command, the trust settings for that institution set
170: # for this domain (or default domain for a multi-domain server) will
171: # be checked to see if running the command is allowed.
172: #
173: # Trust types which depend on the "Trust" domain configuration
174: # for the machine's default domain are:
175: #
176: # content ("Access to this domain's content by others")
177: # shared ("Access to other domain's content by this domain")
178: # enroll ("Enrollment in this domain's courses by others")
179: # coaurem ("Co-author roles for this domain's users elsewhere")
1.552 raeburn 180: # othcoau ("Co-author roles in this domain for others")
1.525 raeburn 181: # domroles ("Domain roles in this domain assignable to others")
182: # catalog ("Course Catalog for this domain displayed elsewhere")
183: # reqcrs ("Requests for creation of courses in this domain by others")
184: # msg ("Users in other domains can send messages to this domain")
185: #
186: # Trust type which depends on the User Session Hosting (remote)
187: # domain configuration for machine's default domain is: "remote".
188: #
189: # Trust types which depend on contents of manager.tab in
190: # /home/httpd/lonTabs is: "manageronly".
191: #
192: # Trust type which requires client to share the same LON-CAPA
193: # "internet domain" (i.e., same institution as this server) is:
194: # "institutiononly".
195: #
196:
197: my %trust = (
198: auth => {remote => 1},
199: autocreatepassword => {remote => 1},
200: autocrsreqchecks => {remote => 1, reqcrs => 1},
201: autocrsrequpdate => {remote => 1},
202: autocrsreqvalidation => {remote => 1},
203: autogetsections => {remote => 1},
204: autoinstcodedefaults => {remote => 1, catalog => 1},
205: autoinstcodeformat => {remote => 1, catalog => 1},
206: autonewcourse => {remote => 1, reqcrs => 1},
207: autophotocheck => {remote => 1, enroll => 1},
208: autophotochoice => {remote => 1},
209: autophotopermission => {remote => 1, enroll => 1},
210: autopossibleinstcodes => {remote => 1, reqcrs => 1},
211: autoretrieve => {remote => 1, enroll => 1, catalog => 1},
212: autorun => {remote => 1, enroll => 1, reqcrs => 1},
213: autovalidateclass_sec => {catalog => 1},
214: autovalidatecourse => {remote => 1, enroll => 1},
215: autovalidateinstcode => {domroles => 1, remote => 1, enroll => 1},
1.566 raeburn 216: autovalidateinstcrosslist => {remote => 1, enroll => 1},
1.567 raeburn 217: autoinstsecreformat => {remote => 1, enroll => 1},
1.525 raeburn 218: changeuserauth => {remote => 1, domroles => 1},
219: chatretr => {remote => 1, enroll => 1},
220: chatsend => {remote => 1, enroll => 1},
221: courseiddump => {remote => 1, domroles => 1, enroll => 1},
222: courseidput => {remote => 1, domroles => 1, enroll => 1},
223: courseidputhash => {remote => 1, domroles => 1, enroll => 1},
224: courselastaccess => {remote => 1, domroles => 1, enroll => 1},
1.561 raeburn 225: coursesessions => {institutiononly => 1},
1.525 raeburn 226: currentauth => {remote => 1, domroles => 1, enroll => 1},
227: currentdump => {remote => 1, enroll => 1},
228: currentversion => {remote=> 1, content => 1},
229: dcmaildump => {remote => 1, domroles => 1},
230: dcmailput => {remote => 1, domroles => 1},
231: del => {remote => 1, domroles => 1, enroll => 1, content => 1},
1.551 raeburn 232: delbalcookie => {institutiononly => 1},
1.560 raeburn 233: delusersession => {institutiononly => 1},
1.525 raeburn 234: deldom => {remote => 1, domroles => 1}, # not currently used
235: devalidatecache => {institutiononly => 1},
236: domroleput => {remote => 1, enroll => 1},
237: domrolesdump => {remote => 1, catalog => 1},
238: du => {remote => 1, enroll => 1},
239: du2 => {remote => 1, enroll => 1},
240: dump => {remote => 1, enroll => 1, domroles => 1},
241: edit => {institutiononly => 1}, #not used currently
1.568 raeburn 242: edump => {remote => 1, enroll => 1, domroles => 1},
1.525 raeburn 243: eget => {remote => 1, domroles => 1, enroll => 1}, #not used currently
1.536 raeburn 244: egetdom => {remote => 1, domroles => 1, enroll => 1, },
1.553 raeburn 245: ekey => {anywhere => 1},
1.525 raeburn 246: exit => {anywhere => 1},
247: fetchuserfile => {remote => 1, enroll => 1},
248: get => {remote => 1, domroles => 1, enroll => 1},
249: getdom => {anywhere => 1},
250: home => {anywhere => 1},
251: iddel => {remote => 1, enroll => 1},
252: idget => {remote => 1, enroll => 1},
253: idput => {remote => 1, domroles => 1, enroll => 1},
254: inc => {remote => 1, enroll => 1},
255: init => {anywhere => 1},
256: inst_usertypes => {remote => 1, domroles => 1, enroll => 1},
257: instemailrules => {remote => 1, domroles => 1},
258: instidrulecheck => {remote => 1, domroles => 1,},
259: instidrules => {remote => 1, domroles => 1,},
260: instrulecheck => {remote => 1, enroll => 1, reqcrs => 1, domroles => 1},
261: instselfcreatecheck => {institutiononly => 1},
262: instuserrules => {remote => 1, enroll => 1, reqcrs => 1, domroles => 1},
263: keys => {remote => 1,},
264: load => {anywhere => 1},
265: log => {anywhere => 1},
266: ls => {remote => 1, enroll => 1, content => 1,},
267: ls2 => {remote => 1, enroll => 1, content => 1,},
268: ls3 => {remote => 1, enroll => 1, content => 1,},
1.572 ! raeburn 269: lti => {institutiononly => 1},
1.525 raeburn 270: makeuser => {remote => 1, enroll => 1, domroles => 1,},
271: mkdiruserfile => {remote => 1, enroll => 1,},
272: newput => {remote => 1, enroll => 1, reqcrs => 1, domroles => 1,},
273: passwd => {remote => 1},
274: ping => {anywhere => 1},
275: pong => {anywhere => 1},
276: pushfile => {manageronly => 1},
277: put => {remote => 1, enroll => 1, domroles => 1, msg => 1, content => 1, shared => 1},
278: putdom => {remote => 1, domroles => 1,},
279: putstore => {remote => 1, enroll => 1},
280: queryreply => {anywhere => 1},
281: querysend => {anywhere => 1},
1.535 raeburn 282: querysend_activitylog => {remote => 1},
283: querysend_allusers => {remote => 1, domroles => 1},
284: querysend_courselog => {remote => 1},
285: querysend_fetchenrollment => {remote => 1},
286: querysend_getinstuser => {remote => 1},
287: querysend_getmultinstusers => {remote => 1},
288: querysend_instdirsearch => {remote => 1, domroles => 1, coaurem => 1},
289: querysend_institutionalphotos => {remote => 1},
290: querysend_portfolio_metadata => {remote => 1, content => 1},
291: querysend_userlog => {remote => 1, domroles => 1},
292: querysend_usersearch => {remote => 1, enroll => 1, coaurem => 1},
1.525 raeburn 293: quit => {anywhere => 1},
294: readlonnetglobal => {institutiononly => 1},
295: reinit => {manageronly => 1}, #not used currently
296: removeuserfile => {remote => 1, enroll => 1},
297: renameuserfile => {remote => 1,},
298: restore => {remote => 1, enroll => 1, reqcrs => 1,},
299: rolesdel => {remote => 1, enroll => 1, domroles => 1, coaurem => 1},
300: rolesput => {remote => 1, enroll => 1, domroles => 1, coaurem => 1},
1.527 raeburn 301: servercerts => {institutiononly => 1},
1.528 raeburn 302: serverdistarch => {anywhere => 1},
1.525 raeburn 303: serverhomeID => {anywhere => 1},
304: serverloncaparev => {anywhere => 1},
305: servertimezone => {remote => 1, enroll => 1},
306: setannounce => {remote => 1, domroles => 1},
307: sethost => {anywhere => 1},
308: store => {remote => 1, enroll => 1, reqcrs => 1,},
309: studentphoto => {remote => 1, enroll => 1},
310: sub => {content => 1,},
1.552 raeburn 311: tmpdel => {institutiononly => 1},
312: tmpget => {institutiononly => 1},
313: tmpput => {remote => 1, othcoau => 1},
1.525 raeburn 314: tokenauthuserfile => {anywhere => 1},
315: unsub => {content => 1,},
316: update => {shared => 1},
1.564 raeburn 317: updatebalcookie => {institutiononly => 1},
1.525 raeburn 318: updateclickers => {remote => 1},
319: userhassession => {anywhere => 1},
320: userload => {anywhere => 1},
321: version => {anywhere => 1}, #not used
322: );
323:
324: #
1.207 foxr 325: # Statistics that are maintained and dislayed in the status line.
326: #
1.212 foxr 327: my $Transactions = 0; # Number of attempted transactions.
328: my $Failures = 0; # Number of transcations failed.
1.207 foxr 329:
330: # ResetStatistics:
331: # Resets the statistics counters:
332: #
333: sub ResetStatistics {
334: $Transactions = 0;
335: $Failures = 0;
336: }
337:
1.200 matthew 338: #------------------------------------------------------------------------
339: #
340: # LocalConnection
341: # Completes the formation of a locally authenticated connection.
342: # This function will ensure that the 'remote' client is really the
343: # local host. If not, the connection is closed, and the function fails.
344: # If so, initcmd is parsed for the name of a file containing the
345: # IDEA session key. The fie is opened, read, deleted and the session
346: # key returned to the caller.
347: #
348: # Parameters:
349: # $Socket - Socket open on client.
350: # $initcmd - The full text of the init command.
351: #
352: # Returns:
353: # IDEA session key on success.
354: # undef on failure.
355: #
356: sub LocalConnection {
357: my ($Socket, $initcmd) = @_;
1.373 albertel 358: Debug("Attempting local connection: $initcmd client: $clientip");
1.277 albertel 359: if($clientip ne "127.0.0.1") {
1.200 matthew 360: &logthis('<font color="red"> LocalConnection rejecting non local: '
1.373 albertel 361: ."$clientip ne 127.0.0.1 </font>");
1.200 matthew 362: close $Socket;
363: return undef;
1.224 foxr 364: } else {
1.200 matthew 365: chomp($initcmd); # Get rid of \n in filename.
366: my ($init, $type, $name) = split(/:/, $initcmd);
367: Debug(" Init command: $init $type $name ");
368:
369: # Require that $init = init, and $type = local: Otherwise
370: # the caller is insane:
371:
372: if(($init ne "init") && ($type ne "local")) {
373: &logthis('<font color = "red"> LocalConnection: caller is insane! '
374: ."init = $init, and type = $type </font>");
375: close($Socket);;
376: return undef;
377:
378: }
379: # Now get the key filename:
380:
381: my $IDEAKey = lonlocal::ReadKeyFile($name);
382: return $IDEAKey;
383: }
384: }
385: #------------------------------------------------------------------------------
386: #
387: # SSLConnection
388: # Completes the formation of an ssh authenticated connection. The
389: # socket is promoted to an ssl socket. If this promotion and the associated
390: # certificate exchange are successful, the IDEA key is generated and sent
391: # to the remote peer via the SSL tunnel. The IDEA key is also returned to
392: # the caller after the SSL tunnel is torn down.
393: #
394: # Parameters:
395: # Name Type Purpose
396: # $Socket IO::Socket::INET Plaintext socket.
397: #
398: # Returns:
399: # IDEA key on success.
400: # undef on failure.
401: #
402: sub SSLConnection {
403: my $Socket = shift;
404:
405: Debug("SSLConnection: ");
406: my $KeyFile = lonssl::KeyFile();
407: if(!$KeyFile) {
408: my $err = lonssl::LastError();
409: &logthis("<font color=\"red\"> CRITICAL"
410: ."Can't get key file $err </font>");
411: return undef;
412: }
413: my ($CACertificate,
414: $Certificate) = lonssl::CertificateFile();
415:
416:
417: # If any of the key, certificate or certificate authority
418: # certificate filenames are not defined, this can't work.
419:
420: if((!$Certificate) || (!$CACertificate)) {
421: my $err = lonssl::LastError();
422: &logthis("<font color=\"red\"> CRITICAL"
423: ."Can't get certificates: $err </font>");
424:
425: return undef;
426: }
427: Debug("Key: $KeyFile CA: $CACertificate Cert: $Certificate");
428:
429: # Indicate to our peer that we can procede with
430: # a transition to ssl authentication:
431:
432: print $Socket "ok:ssl\n";
433:
434: Debug("Approving promotion -> ssl");
435: # And do so:
436:
1.545 raeburn 437: my $CRLFile;
438: unless ($crlchecked{$clientname}) {
439: $CRLFile = lonssl::CRLFile();
440: $crlchecked{$clientname} = 1;
441: }
442:
1.200 matthew 443: my $SSLSocket = lonssl::PromoteServerSocket($Socket,
444: $CACertificate,
445: $Certificate,
1.544 raeburn 446: $KeyFile,
1.545 raeburn 447: $clientname,
1.546 raeburn 448: $CRLFile,
449: $clientversion);
1.200 matthew 450: if(! ($SSLSocket) ) { # SSL socket promotion failed.
451: my $err = lonssl::LastError();
452: &logthis("<font color=\"red\"> CRITICAL "
453: ."SSL Socket promotion failed: $err </font>");
454: return undef;
455: }
456: Debug("SSL Promotion successful");
457:
458: #
459: # The only thing we'll use the socket for is to send the IDEA key
460: # to the peer:
461:
462: my $Key = lonlocal::CreateCipherKey();
463: print $SSLSocket "$Key\n";
464:
465: lonssl::Close($SSLSocket);
466:
467: Debug("Key exchange complete: $Key");
468:
469: return $Key;
470: }
471: #
472: # InsecureConnection:
473: # If insecure connections are allowd,
474: # exchange a challenge with the client to 'validate' the
475: # client (not really, but that's the protocol):
476: # We produce a challenge string that's sent to the client.
477: # The client must then echo the challenge verbatim to us.
478: #
479: # Parameter:
480: # Socket - Socket open on the client.
481: # Returns:
482: # 1 - success.
483: # 0 - failure (e.g.mismatch or insecure not allowed).
484: #
485: sub InsecureConnection {
486: my $Socket = shift;
487:
488: # Don't even start if insecure connections are not allowed.
1.532 raeburn 489: # return 0 if Insecure connections not allowed.
490: #
491: if (ref($secureconf{'connfrom'}) eq 'HASH') {
492: if ($clientsamedom) {
493: if ($secureconf{'connfrom'}{'dom'} eq 'req') {
494: return 0;
495: }
496: } elsif ($clientsameinst) {
497: if ($secureconf{'connfrom'}{'intdom'} eq 'req') {
498: return 0;
499: }
500: } else {
501: if ($secureconf{'connfrom'}{'other'} eq 'req') {
502: return 0;
503: }
504: }
505: } elsif (!$perlvar{londAllowInsecure}) {
1.200 matthew 506: return 0;
507: }
508:
509: # Fabricate a challenge string and send it..
510:
511: my $challenge = "$$".time; # pid + time.
512: print $Socket "$challenge\n";
513: &status("Waiting for challenge reply");
514:
515: my $answer = <$Socket>;
516: $answer =~s/\W//g;
517: if($challenge eq $answer) {
518: return 1;
1.224 foxr 519: } else {
1.200 matthew 520: logthis("<font color='blue'>WARNING client did not respond to challenge</font>");
521: &status("No challenge reqply");
522: return 0;
523: }
524:
525:
526: }
1.251 foxr 527: #
528: # Safely execute a command (as long as it's not a shel command and doesn
529: # not require/rely on shell escapes. The function operates by doing a
530: # a pipe based fork and capturing stdout and stderr from the pipe.
531: #
532: # Formal Parameters:
533: # $line - A line of text to be executed as a command.
534: # Returns:
535: # The output from that command. If the output is multiline the caller
536: # must know how to split up the output.
537: #
538: #
539: sub execute_command {
540: my ($line) = @_;
541: my @words = split(/\s/, $line); # Bust the command up into words.
542: my $output = "";
543:
544: my $pid = open(CHILD, "-|");
545:
546: if($pid) { # Parent process
547: Debug("In parent process for execute_command");
548: my @data = <CHILD>; # Read the child's outupt...
549: close CHILD;
550: foreach my $output_line (@data) {
551: Debug("Adding $output_line");
552: $output .= $output_line; # Presumably has a \n on it.
553: }
554:
555: } else { # Child process
556: close (STDERR);
557: open (STDERR, ">&STDOUT");# Combine stderr, and stdout...
558: exec(@words); # won't return.
559: }
560: return $output;
561: }
562:
1.200 matthew 563:
1.140 foxr 564: # GetCertificate: Given a transaction that requires a certificate,
565: # this function will extract the certificate from the transaction
566: # request. Note that at this point, the only concept of a certificate
567: # is the hostname to which we are connected.
568: #
569: # Parameter:
570: # request - The request sent by our client (this parameterization may
571: # need to change when we really use a certificate granting
572: # authority.
573: #
574: sub GetCertificate {
575: my $request = shift;
576:
577: return $clientip;
578: }
1.161 foxr 579:
1.178 foxr 580: #
581: # Return true if client is a manager.
582: #
583: sub isManager {
584: return (($ConnectionType eq "manager") || ($ConnectionType eq "both"));
585: }
586: #
587: # Return tru if client can do client functions
588: #
589: sub isClient {
590: return (($ConnectionType eq "client") || ($ConnectionType eq "both"));
591: }
1.161 foxr 592:
593:
1.156 foxr 594: #
595: # ReadManagerTable: Reads in the current manager table. For now this is
596: # done on each manager authentication because:
597: # - These authentications are not frequent
598: # - This allows dynamic changes to the manager table
599: # without the need to signal to the lond.
600: #
601: sub ReadManagerTable {
602:
1.412 foxr 603: &Debug("Reading manager table");
1.156 foxr 604: # Clean out the old table first..
605:
1.166 foxr 606: foreach my $key (keys %managers) {
607: delete $managers{$key};
608: }
609:
610: my $tablename = $perlvar{'lonTabDir'}."/managers.tab";
611: if (!open (MANAGERS, $tablename)) {
1.473 raeburn 612: my $hostname = &Apache::lonnet::hostname($perlvar{'lonHostID'});
613: if (&Apache::lonnet::is_LC_dns($hostname)) {
1.472 raeburn 614: &logthis('<font color="red">No manager table. Nobody can manage!!</font>');
615: }
616: return;
1.166 foxr 617: }
618: while(my $host = <MANAGERS>) {
619: chomp($host);
620: if ($host =~ "^#") { # Comment line.
621: next;
622: }
1.368 albertel 623: if (!defined &Apache::lonnet::get_host_ip($host)) { # This is a non cluster member
1.161 foxr 624: # The entry is of the form:
625: # cluname:hostname
626: # cluname - A 'cluster hostname' is needed in order to negotiate
627: # the host key.
628: # hostname- The dns name of the host.
629: #
1.166 foxr 630: my($cluname, $dnsname) = split(/:/, $host);
631:
632: my $ip = gethostbyname($dnsname);
633: if(defined($ip)) { # bad names don't deserve entry.
634: my $hostip = inet_ntoa($ip);
635: $managers{$hostip} = $cluname;
636: logthis('<font color="green"> registering manager '.
637: "$dnsname as $cluname with $hostip </font>\n");
638: }
639: } else {
640: logthis('<font color="green"> existing host'." $host</font>\n");
1.472 raeburn 641: $managers{&Apache::lonnet::get_host_ip($host)} = $host; # Use info from cluster tab if cluster memeber
1.166 foxr 642: }
643: }
1.156 foxr 644: }
1.140 foxr 645:
646: #
647: # ValidManager: Determines if a given certificate represents a valid manager.
648: # in this primitive implementation, the 'certificate' is
649: # just the connecting loncapa client name. This is checked
650: # against a valid client list in the configuration.
651: #
652: #
653: sub ValidManager {
654: my $certificate = shift;
655:
1.163 foxr 656: return isManager;
1.140 foxr 657: }
658: #
1.143 foxr 659: # CopyFile: Called as part of the process of installing a
660: # new configuration file. This function copies an existing
661: # file to a backup file.
662: # Parameters:
663: # oldfile - Name of the file to backup.
664: # newfile - Name of the backup file.
665: # Return:
666: # 0 - Failure (errno has failure reason).
667: # 1 - Success.
668: #
669: sub CopyFile {
1.192 foxr 670:
671: my ($oldfile, $newfile) = @_;
1.143 foxr 672:
1.281 matthew 673: if (! copy($oldfile,$newfile)) {
674: return 0;
1.143 foxr 675: }
1.281 matthew 676: chmod(0660, $newfile);
677: return 1;
1.143 foxr 678: }
1.157 foxr 679: #
680: # Host files are passed out with externally visible host IPs.
681: # If, for example, we are behind a fire-wall or NAT host, our
682: # internally visible IP may be different than the externally
683: # visible IP. Therefore, we always adjust the contents of the
684: # host file so that the entry for ME is the IP that we believe
685: # we have. At present, this is defined as the entry that
686: # DNS has for us. If by some chance we are not able to get a
687: # DNS translation for us, then we assume that the host.tab file
688: # is correct.
689: # BUGBUGBUG - in the future, we really should see if we can
690: # easily query the interface(s) instead.
691: # Parameter(s):
692: # contents - The contents of the host.tab to check.
693: # Returns:
694: # newcontents - The adjusted contents.
695: #
696: #
697: sub AdjustHostContents {
698: my $contents = shift;
699: my $adjusted;
700: my $me = $perlvar{'lonHostID'};
701:
1.354 albertel 702: foreach my $line (split(/\n/,$contents)) {
1.472 raeburn 703: if(!(($line eq "") || ($line =~ /^ *\#/) || ($line =~ /^ *$/) ||
704: ($line =~ /^\s*\^/))) {
1.157 foxr 705: chomp($line);
706: my ($id,$domain,$role,$name,$ip,$maxcon,$idleto,$mincon)=split(/:/,$line);
707: if ($id eq $me) {
1.354 albertel 708: my $ip = gethostbyname($name);
709: my $ipnew = inet_ntoa($ip);
710: $ip = $ipnew;
1.157 foxr 711: # Reconstruct the host line and append to adjusted:
712:
1.354 albertel 713: my $newline = "$id:$domain:$role:$name:$ip";
714: if($maxcon ne "") { # Not all hosts have loncnew tuning params
715: $newline .= ":$maxcon:$idleto:$mincon";
716: }
717: $adjusted .= $newline."\n";
1.157 foxr 718:
1.354 albertel 719: } else { # Not me, pass unmodified.
720: $adjusted .= $line."\n";
721: }
1.157 foxr 722: } else { # Blank or comment never re-written.
723: $adjusted .= $line."\n"; # Pass blanks and comments as is.
724: }
1.354 albertel 725: }
726: return $adjusted;
1.157 foxr 727: }
1.143 foxr 728: #
729: # InstallFile: Called to install an administrative file:
1.412 foxr 730: # - The file is created int a temp directory called <name>.tmp
731: # - lcinstall file is called to install the file.
732: # since the web app has no direct write access to the table directory
1.143 foxr 733: #
734: # Parameters:
735: # Name of the file
736: # File Contents.
737: # Return:
738: # nonzero - success.
739: # 0 - failure and $! has an errno.
1.412 foxr 740: # Assumptions:
741: # File installtion is a relatively infrequent
1.143 foxr 742: #
743: sub InstallFile {
1.192 foxr 744:
745: my ($Filename, $Contents) = @_;
1.412 foxr 746: # my $TempFile = $Filename.".tmp";
747: my $exedir = $perlvar{'lonDaemons'};
748: my $tmpdir = $exedir.'/tmp/';
749: my $TempFile = $tmpdir."TempTableFile.tmp";
1.143 foxr 750:
751: # Open the file for write:
752:
753: my $fh = IO::File->new("> $TempFile"); # Write to temp.
754: if(!(defined $fh)) {
755: &logthis('<font color="red"> Unable to create '.$TempFile."</font>");
756: return 0;
757: }
758: # write the contents of the file:
759:
760: print $fh ($Contents);
761: $fh->close; # In case we ever have a filesystem w. locking
762:
1.412 foxr 763: chmod(0664, $TempFile); # Everyone can write it.
764:
765: # Use lcinstall file to put the file in the table directory...
766:
767: &Debug("Opening pipe to $exedir/lcinstallfile $TempFile $Filename");
768: my $pf = IO::File->new("| $exedir/lcinstallfile $TempFile $Filename > $exedir/logs/lcinstallfile.log");
769: close $pf;
770: my $err = $?;
771: &Debug("Status is $err");
772: if ($err != 0) {
773: my $msg = $err;
774: if ($err < @installerrors) {
775: $msg = $installerrors[$err];
776: }
777: &logthis("Install failed for table file $Filename : $msg");
778: return 0;
779: }
780:
781: # Remove the temp file:
1.143 foxr 782:
1.412 foxr 783: unlink($TempFile);
1.143 foxr 784:
785: return 1;
786: }
1.200 matthew 787:
788:
1.169 foxr 789: #
790: # ConfigFileFromSelector: converts a configuration file selector
1.411 foxr 791: # into a configuration file pathname.
1.472 raeburn 792: # Supports the following file selectors:
793: # hosts, domain, dns_hosts, dns_domain
1.411 foxr 794: #
1.169 foxr 795: #
796: # Parameters:
797: # selector - Configuration file selector.
798: # Returns:
799: # Full path to the file or undef if the selector is invalid.
800: #
801: sub ConfigFileFromSelector {
802: my $selector = shift;
803: my $tablefile;
804:
1.549 raeburn 805: if ($selector eq 'loncapaCAcrl') {
806: my $tabledir = $perlvar{'lonCertificateDirectory'};
807: if (-d $tabledir) {
808: $tablefile = $tabledir.'/'.$selector.'.pem';
809: }
810: } else {
811: my $tabledir = $perlvar{'lonTabDir'}.'/';
812: if (($selector eq "hosts") || ($selector eq "domain") ||
813: ($selector eq "dns_hosts") || ($selector eq "dns_domain")) {
814: $tablefile = $tabledir.$selector.'.tab';
815: }
1.169 foxr 816: }
817: return $tablefile;
818: }
1.143 foxr 819: #
1.141 foxr 820: # PushFile: Called to do an administrative push of a file.
821: # - Ensure the file being pushed is one we support.
822: # - Backup the old file to <filename.saved>
823: # - Separate the contents of the new file out from the
824: # rest of the request.
825: # - Write the new file.
826: # Parameter:
827: # Request - The entire user request. This consists of a : separated
828: # string pushfile:tablename:contents.
829: # NOTE: The contents may have :'s in it as well making things a bit
830: # more interesting... but not much.
831: # Returns:
832: # String to send to client ("ok" or "refused" if bad file).
833: #
834: sub PushFile {
1.510 raeburn 835: my $request = shift;
1.141 foxr 836: my ($command, $filename, $contents) = split(":", $request, 3);
1.412 foxr 837: &Debug("PushFile");
1.141 foxr 838:
1.549 raeburn 839: # At this point in time, pushes for only the following tables and
840: # CRL file are supported:
1.141 foxr 841: # hosts.tab ($filename eq host).
842: # domain.tab ($filename eq domain).
1.472 raeburn 843: # dns_hosts.tab ($filename eq dns_host).
1.554 raeburn 844: # dns_domain.tab ($filename eq dns_domain).
845: # loncapaCAcrl.pem ($filename eq loncapaCAcrl).
1.141 foxr 846: # Construct the destination filename or reject the request.
847: #
848: # lonManage is supposed to ensure this, however this session could be
849: # part of some elaborate spoof that managed somehow to authenticate.
850: #
851:
1.169 foxr 852:
853: my $tablefile = ConfigFileFromSelector($filename);
854: if(! (defined $tablefile)) {
1.141 foxr 855: return "refused";
856: }
1.412 foxr 857:
1.157 foxr 858: # If the file being pushed is the host file, we adjust the entry for ourself so that the
859: # IP will be our current IP as looked up in dns. Note this is only 99% good as it's possible
860: # to conceive of conditions where we don't have a DNS entry locally. This is possible in a
861: # network sense but it doesn't make much sense in a LonCAPA sense so we ignore (for now)
862: # that possibilty.
863:
864: if($filename eq "host") {
865: $contents = AdjustHostContents($contents);
1.549 raeburn 866: } elsif (($filename eq 'dns_host') || ($filename eq 'dns_domain') ||
867: ($filename eq 'loncapaCAcrl')) {
1.510 raeburn 868: if ($contents eq '') {
869: &logthis('<font color="red"> Pushfile: unable to install '
870: .$tablefile." - no data received from push. </font>");
871: return 'error: push had no data';
872: }
873: if (&Apache::lonnet::get_host_ip($clientname)) {
874: my $clienthost = &Apache::lonnet::hostname($clientname);
875: if ($managers{$clientip} eq $clientname) {
876: my $clientprotocol = $Apache::lonnet::protocol{$clientname};
877: $clientprotocol = 'http' if ($clientprotocol ne 'https');
1.549 raeburn 878: my $url;
879: if ($filename eq 'loncapaCAcrl') {
880: $url = '/adm/dns/loncapaCRL';
881: } else {
882: $url = '/adm/'.$filename;
883: $url =~ s{_}{/};
884: }
1.510 raeburn 885: my $request=new HTTP::Request('GET',"$clientprotocol://$clienthost$url");
1.523 raeburn 886: my $response = LONCAPA::LWPReq::makerequest($clientname,$request,'',\%perlvar,60,0);
1.510 raeburn 887: if ($response->is_error()) {
888: &logthis('<font color="red"> Pushfile: unable to install '
889: .$tablefile." - error attempting to pull data. </font>");
890: return 'error: pull failed';
891: } else {
892: my $result = $response->content;
893: chomp($result);
894: unless ($result eq $contents) {
895: &logthis('<font color="red"> Pushfile: unable to install '
896: .$tablefile." - pushed data and pulled data differ. </font>");
897: my $pushleng = length($contents);
898: my $pullleng = length($result);
899: if ($pushleng != $pullleng) {
900: return "error: $pushleng vs $pullleng bytes";
901: } else {
902: return "error: mismatch push and pull";
903: }
904: }
905: }
906: }
907: }
1.157 foxr 908: }
909:
1.141 foxr 910: # Install the new file:
911:
1.412 foxr 912: &logthis("Installing new $tablefile contents:\n$contents");
1.143 foxr 913: if(!InstallFile($tablefile, $contents)) {
914: &logthis('<font color="red"> Pushfile: unable to install '
1.145 foxr 915: .$tablefile." $! </font>");
1.143 foxr 916: return "error:$!";
1.224 foxr 917: } else {
1.143 foxr 918: &logthis('<font color="green"> Installed new '.$tablefile
1.473 raeburn 919: ." - transaction by: $clientname ($clientip)</font>");
1.472 raeburn 920: my $adminmail = $perlvar{'lonAdmEMail'};
921: my $admindom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
922: if ($admindom ne '') {
923: my %domconfig =
924: &Apache::lonnet::get_dom('configuration',['contacts'],$admindom);
925: if (ref($domconfig{'contacts'}) eq 'HASH') {
926: if ($domconfig{'contacts'}{'adminemail'} ne '') {
927: $adminmail = $domconfig{'contacts'}{'adminemail'};
928: }
929: }
930: }
931: if ($adminmail =~ /^[^\@]+\@[^\@]+$/) {
932: my $msg = new Mail::Send;
933: $msg->to($adminmail);
934: $msg->subject('LON-CAPA DNS update on '.$perlvar{'lonHostID'});
935: $msg->add('Content-type','text/plain; charset=UTF-8');
936: if (my $fh = $msg->open()) {
937: print $fh 'Update to '.$tablefile.' from Cluster Manager '.
1.473 raeburn 938: "$clientname ($clientip)\n";
1.472 raeburn 939: $fh->close;
940: }
941: }
1.143 foxr 942: }
943:
1.141 foxr 944: # Indicate success:
945:
946: return "ok";
947:
948: }
1.145 foxr 949:
950: #
951: # Called to re-init either lonc or lond.
952: #
953: # Parameters:
954: # request - The full request by the client. This is of the form
955: # reinit:<process>
956: # where <process> is allowed to be either of
957: # lonc or lond
958: #
959: # Returns:
960: # The string to be sent back to the client either:
961: # ok - Everything worked just fine.
962: # error:why - There was a failure and why describes the reason.
963: #
964: #
965: sub ReinitProcess {
966: my $request = shift;
967:
1.146 foxr 968:
969: # separate the request (reinit) from the process identifier and
970: # validate it producing the name of the .pid file for the process.
971: #
972: #
973: my ($junk, $process) = split(":", $request);
1.147 foxr 974: my $processpidfile = $perlvar{'lonDaemons'}.'/logs/';
1.146 foxr 975: if($process eq 'lonc') {
976: $processpidfile = $processpidfile."lonc.pid";
1.147 foxr 977: if (!open(PIDFILE, "< $processpidfile")) {
978: return "error:Open failed for $processpidfile";
979: }
980: my $loncpid = <PIDFILE>;
981: close(PIDFILE);
982: logthis('<font color="red"> Reinitializing lonc pid='.$loncpid
983: ."</font>");
984: kill("USR2", $loncpid);
1.146 foxr 985: } elsif ($process eq 'lond') {
1.147 foxr 986: logthis('<font color="red"> Reinitializing self (lond) </font>');
987: &UpdateHosts; # Lond is us!!
1.146 foxr 988: } else {
989: &logthis('<font color="yellow" Invalid reinit request for '.$process
990: ."</font>");
991: return "error:Invalid process identifier $process";
992: }
1.145 foxr 993: return 'ok';
994: }
1.168 foxr 995: # Validate a line in a configuration file edit script:
996: # Validation includes:
997: # - Ensuring the command is valid.
998: # - Ensuring the command has sufficient parameters
999: # Parameters:
1000: # scriptline - A line to validate (\n has been stripped for what it's worth).
1.167 foxr 1001: #
1.168 foxr 1002: # Return:
1003: # 0 - Invalid scriptline.
1004: # 1 - Valid scriptline
1005: # NOTE:
1006: # Only the command syntax is checked, not the executability of the
1007: # command.
1008: #
1009: sub isValidEditCommand {
1010: my $scriptline = shift;
1011:
1012: # Line elements are pipe separated:
1013:
1014: my ($command, $key, $newline) = split(/\|/, $scriptline);
1015: &logthis('<font color="green"> isValideditCommand checking: '.
1016: "Command = '$command', Key = '$key', Newline = '$newline' </font>\n");
1017:
1018: if ($command eq "delete") {
1019: #
1020: # key with no newline.
1021: #
1022: if( ($key eq "") || ($newline ne "")) {
1023: return 0; # Must have key but no newline.
1024: } else {
1025: return 1; # Valid syntax.
1026: }
1.169 foxr 1027: } elsif ($command eq "replace") {
1.168 foxr 1028: #
1029: # key and newline:
1030: #
1031: if (($key eq "") || ($newline eq "")) {
1032: return 0;
1033: } else {
1034: return 1;
1035: }
1.169 foxr 1036: } elsif ($command eq "append") {
1037: if (($key ne "") && ($newline eq "")) {
1038: return 1;
1039: } else {
1040: return 0;
1041: }
1.168 foxr 1042: } else {
1043: return 0; # Invalid command.
1044: }
1045: return 0; # Should not get here!!!
1046: }
1.169 foxr 1047: #
1048: # ApplyEdit - Applies an edit command to a line in a configuration
1049: # file. It is the caller's responsiblity to validate the
1050: # edit line.
1051: # Parameters:
1052: # $directive - A single edit directive to apply.
1053: # Edit directives are of the form:
1054: # append|newline - Appends a new line to the file.
1055: # replace|key|newline - Replaces the line with key value 'key'
1056: # delete|key - Deletes the line with key value 'key'.
1057: # $editor - A config file editor object that contains the
1058: # file being edited.
1059: #
1060: sub ApplyEdit {
1.192 foxr 1061:
1062: my ($directive, $editor) = @_;
1.169 foxr 1063:
1064: # Break the directive down into its command and its parameters
1065: # (at most two at this point. The meaning of the parameters, if in fact
1066: # they exist depends on the command).
1067:
1068: my ($command, $p1, $p2) = split(/\|/, $directive);
1069:
1070: if($command eq "append") {
1071: $editor->Append($p1); # p1 - key p2 null.
1072: } elsif ($command eq "replace") {
1073: $editor->ReplaceLine($p1, $p2); # p1 - key p2 = newline.
1074: } elsif ($command eq "delete") {
1075: $editor->DeleteLine($p1); # p1 - key p2 null.
1076: } else { # Should not get here!!!
1077: die "Invalid command given to ApplyEdit $command"
1078: }
1079: }
1080: #
1081: # AdjustOurHost:
1082: # Adjusts a host file stored in a configuration file editor object
1083: # for the true IP address of this host. This is necessary for hosts
1084: # that live behind a firewall.
1085: # Those hosts have a publicly distributed IP of the firewall, but
1086: # internally must use their actual IP. We assume that a given
1087: # host only has a single IP interface for now.
1088: # Formal Parameters:
1089: # editor - The configuration file editor to adjust. This
1090: # editor is assumed to contain a hosts.tab file.
1091: # Strategy:
1092: # - Figure out our hostname.
1093: # - Lookup the entry for this host.
1094: # - Modify the line to contain our IP
1095: # - Do a replace for this host.
1096: sub AdjustOurHost {
1097: my $editor = shift;
1098:
1099: # figure out who I am.
1100:
1101: my $myHostName = $perlvar{'lonHostID'}; # LonCAPA hostname.
1102:
1103: # Get my host file entry.
1104:
1105: my $ConfigLine = $editor->Find($myHostName);
1106: if(! (defined $ConfigLine)) {
1107: die "AdjustOurHost - no entry for me in hosts file $myHostName";
1108: }
1109: # figure out my IP:
1110: # Use the config line to get my hostname.
1111: # Use gethostbyname to translate that into an IP address.
1112: #
1.338 albertel 1113: my ($id,$domain,$role,$name,$maxcon,$idleto,$mincon) = split(/:/,$ConfigLine);
1.169 foxr 1114: #
1115: # Reassemble the config line from the elements in the list.
1116: # Note that if the loncnew items were not present before, they will
1117: # be now even if they would be empty
1118: #
1119: my $newConfigLine = $id;
1.338 albertel 1120: foreach my $item ($domain, $role, $name, $maxcon, $idleto, $mincon) {
1.169 foxr 1121: $newConfigLine .= ":".$item;
1122: }
1123: # Replace the line:
1124:
1125: $editor->ReplaceLine($id, $newConfigLine);
1126:
1127: }
1128: #
1129: # ReplaceConfigFile:
1130: # Replaces a configuration file with the contents of a
1131: # configuration file editor object.
1132: # This is done by:
1133: # - Copying the target file to <filename>.old
1134: # - Writing the new file to <filename>.tmp
1135: # - Moving <filename.tmp> -> <filename>
1136: # This laborious process ensures that the system is never without
1137: # a configuration file that's at least valid (even if the contents
1138: # may be dated).
1139: # Parameters:
1140: # filename - Name of the file to modify... this is a full path.
1141: # editor - Editor containing the file.
1142: #
1143: sub ReplaceConfigFile {
1.192 foxr 1144:
1145: my ($filename, $editor) = @_;
1.168 foxr 1146:
1.169 foxr 1147: CopyFile ($filename, $filename.".old");
1148:
1149: my $contents = $editor->Get(); # Get the contents of the file.
1150:
1151: InstallFile($filename, $contents);
1152: }
1.168 foxr 1153: #
1154: #
1155: # Called to edit a configuration table file
1.167 foxr 1156: # Parameters:
1157: # request - The entire command/request sent by lonc or lonManage
1158: # Return:
1159: # The reply to send to the client.
1.168 foxr 1160: #
1.167 foxr 1161: sub EditFile {
1162: my $request = shift;
1163:
1164: # Split the command into it's pieces: edit:filetype:script
1165:
1.339 albertel 1166: my ($cmd, $filetype, $script) = split(/:/, $request,3); # : in script
1.167 foxr 1167:
1168: # Check the pre-coditions for success:
1169:
1.339 albertel 1170: if($cmd != "edit") { # Something is amiss afoot alack.
1.167 foxr 1171: return "error:edit request detected, but request != 'edit'\n";
1172: }
1173: if( ($filetype ne "hosts") &&
1174: ($filetype ne "domain")) {
1175: return "error:edit requested with invalid file specifier: $filetype \n";
1176: }
1177:
1178: # Split the edit script and check it's validity.
1.168 foxr 1179:
1180: my @scriptlines = split(/\n/, $script); # one line per element.
1181: my $linecount = scalar(@scriptlines);
1182: for(my $i = 0; $i < $linecount; $i++) {
1183: chomp($scriptlines[$i]);
1184: if(!isValidEditCommand($scriptlines[$i])) {
1185: return "error:edit with bad script line: '$scriptlines[$i]' \n";
1186: }
1187: }
1.145 foxr 1188:
1.167 foxr 1189: # Execute the edit operation.
1.169 foxr 1190: # - Create a config file editor for the appropriate file and
1191: # - execute each command in the script:
1192: #
1193: my $configfile = ConfigFileFromSelector($filetype);
1194: if (!(defined $configfile)) {
1195: return "refused\n";
1196: }
1197: my $editor = ConfigFileEdit->new($configfile);
1.167 foxr 1198:
1.169 foxr 1199: for (my $i = 0; $i < $linecount; $i++) {
1200: ApplyEdit($scriptlines[$i], $editor);
1201: }
1202: # If the file is the host file, ensure that our host is
1203: # adjusted to have our ip:
1204: #
1205: if($filetype eq "host") {
1206: AdjustOurHost($editor);
1207: }
1208: # Finally replace the current file with our file.
1209: #
1210: ReplaceConfigFile($configfile, $editor);
1.167 foxr 1211:
1212: return "ok\n";
1213: }
1.207 foxr 1214:
1.255 foxr 1215: # read_profile
1216: #
1217: # Returns a set of specific entries from a user's profile file.
1218: # this is a utility function that is used by both get_profile_entry and
1219: # get_profile_entry_encrypted.
1220: #
1221: # Parameters:
1222: # udom - Domain in which the user exists.
1223: # uname - User's account name (loncapa account)
1224: # namespace - The profile namespace to open.
1225: # what - A set of & separated queries.
1226: # Returns:
1227: # If all ok: - The string that needs to be shipped back to the user.
1228: # If failure - A string that starts with error: followed by the failure
1229: # reason.. note that this probabyl gets shipped back to the
1230: # user as well.
1231: #
1232: sub read_profile {
1233: my ($udom, $uname, $namespace, $what) = @_;
1234:
1235: my $hashref = &tie_user_hash($udom, $uname, $namespace,
1236: &GDBM_READER());
1237: if ($hashref) {
1238: my @queries=split(/\&/,$what);
1.440 raeburn 1239: if ($namespace eq 'roles') {
1240: @queries = map { &unescape($_); } @queries;
1241: }
1.255 foxr 1242: my $qresult='';
1243:
1244: for (my $i=0;$i<=$#queries;$i++) {
1245: $qresult.="$hashref->{$queries[$i]}&"; # Presumably failure gives empty string.
1246: }
1247: $qresult=~s/\&$//; # Remove trailing & from last lookup.
1.311 albertel 1248: if (&untie_user_hash($hashref)) {
1.255 foxr 1249: return $qresult;
1250: } else {
1251: return "error: ".($!+0)." untie (GDBM) Failed";
1252: }
1253: } else {
1254: if ($!+0 == 2) {
1255: return "error:No such file or GDBM reported bad block error";
1256: } else {
1257: return "error: ".($!+0)." tie (GDBM) Failed";
1258: }
1259: }
1260:
1261: }
1.214 foxr 1262: #--------------------- Request Handlers --------------------------------------------
1263: #
1.215 foxr 1264: # By convention each request handler registers itself prior to the sub
1265: # declaration:
1.214 foxr 1266: #
1267:
1.216 foxr 1268: #++
1269: #
1.214 foxr 1270: # Handles ping requests.
1271: # Parameters:
1272: # $cmd - the actual keyword that invoked us.
1273: # $tail - the tail of the request that invoked us.
1274: # $replyfd- File descriptor connected to the client
1275: # Implicit Inputs:
1276: # $currenthostid - Global variable that carries the name of the host we are
1277: # known as.
1278: # Returns:
1279: # 1 - Ok to continue processing.
1280: # 0 - Program should exit.
1281: # Side effects:
1282: # Reply information is sent to the client.
1283: sub ping_handler {
1284: my ($cmd, $tail, $client) = @_;
1285: Debug("$cmd $tail $client .. $currenthostid:");
1286:
1.387 albertel 1287: Reply( $client,\$currenthostid,"$cmd:$tail");
1.214 foxr 1288:
1289: return 1;
1290: }
1291: ®ister_handler("ping", \&ping_handler, 0, 1, 1); # Ping unencoded, client or manager.
1292:
1.216 foxr 1293: #++
1.215 foxr 1294: #
1295: # Handles pong requests. Pong replies with our current host id, and
1296: # the results of a ping sent to us via our lonc.
1297: #
1298: # Parameters:
1299: # $cmd - the actual keyword that invoked us.
1300: # $tail - the tail of the request that invoked us.
1301: # $replyfd- File descriptor connected to the client
1302: # Implicit Inputs:
1303: # $currenthostid - Global variable that carries the name of the host we are
1304: # connected to.
1305: # Returns:
1306: # 1 - Ok to continue processing.
1307: # 0 - Program should exit.
1308: # Side effects:
1309: # Reply information is sent to the client.
1310: sub pong_handler {
1311: my ($cmd, $tail, $replyfd) = @_;
1312:
1.365 albertel 1313: my $reply=&Apache::lonnet::reply("ping",$clientname);
1.215 foxr 1314: &Reply( $replyfd, "$currenthostid:$reply\n", "$cmd:$tail");
1315: return 1;
1316: }
1317: ®ister_handler("pong", \&pong_handler, 0, 1, 1); # Pong unencoded, client or manager
1318:
1.216 foxr 1319: #++
1320: # Called to establish an encrypted session key with the remote client.
1321: # Note that with secure lond, in most cases this function is never
1322: # invoked. Instead, the secure session key is established either
1323: # via a local file that's locked down tight and only lives for a short
1324: # time, or via an ssl tunnel...and is generated from a bunch-o-random
1325: # bits from /dev/urandom, rather than the predictable pattern used by
1326: # by this sub. This sub is only used in the old-style insecure
1327: # key negotiation.
1328: # Parameters:
1329: # $cmd - the actual keyword that invoked us.
1330: # $tail - the tail of the request that invoked us.
1331: # $replyfd- File descriptor connected to the client
1332: # Implicit Inputs:
1333: # $currenthostid - Global variable that carries the name of the host
1334: # known as.
1.448 raeburn 1335: # $clientname - Global variable that carries the name of the host we're connected to.
1.216 foxr 1336: # Returns:
1337: # 1 - Ok to continue processing.
1338: # 0 - Program should exit.
1339: # Implicit Outputs:
1340: # Reply information is sent to the client.
1341: # $cipher is set with a reference to a new IDEA encryption object.
1342: #
1343: sub establish_key_handler {
1344: my ($cmd, $tail, $replyfd) = @_;
1345:
1346: my $buildkey=time.$$.int(rand 100000);
1347: $buildkey=~tr/1-6/A-F/;
1348: $buildkey=int(rand 100000).$buildkey.int(rand 100000);
1349: my $key=$currenthostid.$clientname;
1350: $key=~tr/a-z/A-Z/;
1351: $key=~tr/G-P/0-9/;
1352: $key=~tr/Q-Z/0-9/;
1353: $key=$key.$buildkey.$key.$buildkey.$key.$buildkey;
1354: $key=substr($key,0,32);
1355: my $cipherkey=pack("H32",$key);
1356: $cipher=new IDEA $cipherkey;
1.387 albertel 1357: &Reply($replyfd, \$buildkey, "$cmd:$tail");
1.216 foxr 1358:
1359: return 1;
1360:
1361: }
1362: ®ister_handler("ekey", \&establish_key_handler, 0, 1,1);
1363:
1.217 foxr 1364: # Handler for the load command. Returns the current system load average
1365: # to the requestor.
1366: #
1367: # Parameters:
1368: # $cmd - the actual keyword that invoked us.
1369: # $tail - the tail of the request that invoked us.
1370: # $replyfd- File descriptor connected to the client
1371: # Implicit Inputs:
1372: # $currenthostid - Global variable that carries the name of the host
1373: # known as.
1.448 raeburn 1374: # $clientname - Global variable that carries the name of the host we're connected to.
1.217 foxr 1375: # Returns:
1376: # 1 - Ok to continue processing.
1377: # 0 - Program should exit.
1378: # Side effects:
1379: # Reply information is sent to the client.
1380: sub load_handler {
1381: my ($cmd, $tail, $replyfd) = @_;
1382:
1.463 foxr 1383:
1384:
1.217 foxr 1385: # Get the load average from /proc/loadavg and calculate it as a percentage of
1386: # the allowed load limit as set by the perl global variable lonLoadLim
1387:
1388: my $loadavg;
1389: my $loadfile=IO::File->new('/proc/loadavg');
1390:
1391: $loadavg=<$loadfile>;
1392: $loadavg =~ s/\s.*//g; # Extract the first field only.
1393:
1394: my $loadpercent=100*$loadavg/$perlvar{'lonLoadLim'};
1395:
1.387 albertel 1396: &Reply( $replyfd, \$loadpercent, "$cmd:$tail");
1.217 foxr 1397:
1398: return 1;
1399: }
1.263 albertel 1400: ®ister_handler("load", \&load_handler, 0, 1, 0);
1.217 foxr 1401:
1402: #
1403: # Process the userload request. This sub returns to the client the current
1404: # user load average. It can be invoked either by clients or managers.
1405: #
1406: # Parameters:
1407: # $cmd - the actual keyword that invoked us.
1408: # $tail - the tail of the request that invoked us.
1409: # $replyfd- File descriptor connected to the client
1410: # Implicit Inputs:
1411: # $currenthostid - Global variable that carries the name of the host
1412: # known as.
1.448 raeburn 1413: # $clientname - Global variable that carries the name of the host we're connected to.
1.217 foxr 1414: # Returns:
1415: # 1 - Ok to continue processing.
1416: # 0 - Program should exit
1417: # Implicit inputs:
1418: # whatever the userload() function requires.
1419: # Implicit outputs:
1420: # the reply is written to the client.
1421: #
1422: sub user_load_handler {
1423: my ($cmd, $tail, $replyfd) = @_;
1424:
1.365 albertel 1425: my $userloadpercent=&Apache::lonnet::userload();
1.387 albertel 1426: &Reply($replyfd, \$userloadpercent, "$cmd:$tail");
1.217 foxr 1427:
1428: return 1;
1429: }
1.263 albertel 1430: ®ister_handler("userload", \&user_load_handler, 0, 1, 0);
1.217 foxr 1431:
1.218 foxr 1432: # Process a request for the authorization type of a user:
1433: # (userauth).
1434: #
1435: # Parameters:
1436: # $cmd - the actual keyword that invoked us.
1437: # $tail - the tail of the request that invoked us.
1438: # $replyfd- File descriptor connected to the client
1439: # Returns:
1440: # 1 - Ok to continue processing.
1441: # 0 - Program should exit
1442: # Implicit outputs:
1443: # The user authorization type is written to the client.
1444: #
1445: sub user_authorization_type {
1446: my ($cmd, $tail, $replyfd) = @_;
1447:
1448: my $userinput = "$cmd:$tail";
1449:
1450: # Pull the domain and username out of the command tail.
1.222 foxr 1451: # and call get_auth_type to determine the authentication type.
1.218 foxr 1452:
1453: my ($udom,$uname)=split(/:/,$tail);
1.222 foxr 1454: my $result = &get_auth_type($udom, $uname);
1.218 foxr 1455: if($result eq "nouser") {
1456: &Failure( $replyfd, "unknown_user\n", $userinput);
1457: } else {
1458: #
1.222 foxr 1459: # We only want to pass the second field from get_auth_type
1.218 foxr 1460: # for ^krb.. otherwise we'll be handing out the encrypted
1461: # password for internals e.g.
1462: #
1463: my ($type,$otherinfo) = split(/:/,$result);
1464: if($type =~ /^krb/) {
1465: $type = $result;
1.269 raeburn 1466: } else {
1467: $type .= ':';
1468: }
1.387 albertel 1469: &Reply( $replyfd, \$type, $userinput);
1.218 foxr 1470: }
1471:
1472: return 1;
1473: }
1474: ®ister_handler("currentauth", \&user_authorization_type, 1, 1, 0);
1475:
1476: # Process a request by a manager to push a hosts or domain table
1477: # to us. We pick apart the command and pass it on to the subs
1478: # that already exist to do this.
1479: #
1480: # Parameters:
1481: # $cmd - the actual keyword that invoked us.
1482: # $tail - the tail of the request that invoked us.
1483: # $client - File descriptor connected to the client
1484: # Returns:
1485: # 1 - Ok to continue processing.
1486: # 0 - Program should exit
1487: # Implicit Output:
1488: # a reply is written to the client.
1489: sub push_file_handler {
1490: my ($cmd, $tail, $client) = @_;
1.412 foxr 1491: &Debug("In push file handler");
1.218 foxr 1492: my $userinput = "$cmd:$tail";
1493:
1494: # At this time we only know that the IP of our partner is a valid manager
1495: # the code below is a hook to do further authentication (e.g. to resolve
1496: # spoofing).
1497:
1498: my $cert = &GetCertificate($userinput);
1.412 foxr 1499: if(&ValidManager($cert)) {
1500: &Debug("Valid manager: $client");
1.218 foxr 1501:
1502: # Now presumably we have the bona fides of both the peer host and the
1503: # process making the request.
1504:
1505: my $reply = &PushFile($userinput);
1.387 albertel 1506: &Reply($client, \$reply, $userinput);
1.218 foxr 1507:
1508: } else {
1.412 foxr 1509: &logthis("push_file_handler $client is not valid");
1.218 foxr 1510: &Failure( $client, "refused\n", $userinput);
1511: }
1.219 foxr 1512: return 1;
1.218 foxr 1513: }
1514: ®ister_handler("pushfile", \&push_file_handler, 1, 0, 1);
1515:
1.399 raeburn 1516: # The du_handler routine should be considered obsolete and is retained
1517: # for communication with legacy servers. Please see the du2_handler.
1.243 banghart 1518: #
1.399 raeburn 1519: # du - list the disk usage of a directory recursively.
1.243 banghart 1520: #
1521: # note: stolen code from the ls file handler
1522: # under construction by Rick Banghart
1523: # .
1524: # Parameters:
1525: # $cmd - The command that dispatched us (du).
1526: # $ududir - The directory path to list... I'm not sure what this
1527: # is relative as things like ls:. return e.g.
1528: # no_such_dir.
1529: # $client - Socket open on the client.
1530: # Returns:
1531: # 1 - indicating that the daemon should not disconnect.
1532: # Side Effects:
1533: # The reply is written to $client.
1534: #
1535: sub du_handler {
1536: my ($cmd, $ududir, $client) = @_;
1.339 albertel 1537: ($ududir) = split(/:/,$ududir); # Make 'telnet' testing easier.
1.251 foxr 1538: my $userinput = "$cmd:$ududir";
1539:
1.245 albertel 1540: if ($ududir=~/\.\./ || $ududir!~m|^/home/httpd/|) {
1541: &Failure($client,"refused\n","$cmd:$ududir");
1542: return 1;
1543: }
1.249 foxr 1544: # Since $ududir could have some nasties in it,
1545: # we will require that ududir is a valid
1546: # directory. Just in case someone tries to
1547: # slip us a line like .;(cd /home/httpd rm -rf*)
1548: # etc.
1549: #
1550: if (-d $ududir) {
1.292 albertel 1551: my $total_size=0;
1552: my $code=sub {
1553: if ($_=~/\.\d+\./) { return;}
1554: if ($_=~/\.meta$/) { return;}
1.362 albertel 1555: if (-d $_) { return;}
1.292 albertel 1556: $total_size+=(stat($_))[7];
1557: };
1.295 raeburn 1558: chdir($ududir);
1.292 albertel 1559: find($code,$ududir);
1560: $total_size=int($total_size/1024);
1.387 albertel 1561: &Reply($client,\$total_size,"$cmd:$ududir");
1.249 foxr 1562: } else {
1.251 foxr 1563: &Failure($client, "bad_directory:$ududir\n","$cmd:$ududir");
1.249 foxr 1564: }
1.243 banghart 1565: return 1;
1566: }
1567: ®ister_handler("du", \&du_handler, 0, 1, 0);
1.218 foxr 1568:
1.399 raeburn 1569: # Please also see the du_handler, which is obsoleted by du2.
1570: # du2_handler differs from du_handler in that required path to directory
1571: # provided by &propath() is prepended in the handler instead of on the
1572: # client side.
1.239 foxr 1573: #
1.399 raeburn 1574: # du2 - list the disk usage of a directory recursively.
1575: #
1576: # Parameters:
1577: # $cmd - The command that dispatched us (du).
1578: # $tail - The tail of the request that invoked us.
1579: # $tail is a : separated list of the following:
1580: # - $ududir - directory path to list (before prepending)
1581: # - $getpropath = 1 if &propath() should prepend
1582: # - $uname - username to use for &propath or user dir
1583: # - $udom - domain to use for &propath or user dir
1584: # All are escaped.
1585: # $client - Socket open on the client.
1586: # Returns:
1587: # 1 - indicating that the daemon should not disconnect.
1588: # Side Effects:
1589: # The reply is written to $client.
1590: #
1591:
1592: sub du2_handler {
1593: my ($cmd, $tail, $client) = @_;
1594: my ($ududir,$getpropath,$uname,$udom) = map { &unescape($_) } (split(/:/, $tail));
1595: my $userinput = "$cmd:$tail";
1596: if (($ududir=~/\.\./) || (($ududir!~m|^/home/httpd/|) && (!$getpropath))) {
1597: &Failure($client,"refused\n","$cmd:$tail");
1598: return 1;
1599: }
1600: if ($getpropath) {
1601: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1602: $ududir = &propath($udom,$uname).'/'.$ududir;
1603: } else {
1604: &Failure($client,"refused\n","$cmd:$tail");
1605: return 1;
1606: }
1607: }
1608: # Since $ududir could have some nasties in it,
1609: # we will require that ududir is a valid
1610: # directory. Just in case someone tries to
1611: # slip us a line like .;(cd /home/httpd rm -rf*)
1612: # etc.
1613: #
1614: if (-d $ududir) {
1615: my $total_size=0;
1616: my $code=sub {
1617: if ($_=~/\.\d+\./) { return;}
1618: if ($_=~/\.meta$/) { return;}
1619: if (-d $_) { return;}
1620: $total_size+=(stat($_))[7];
1621: };
1622: chdir($ududir);
1623: find($code,$ududir);
1624: $total_size=int($total_size/1024);
1625: &Reply($client,\$total_size,"$cmd:$ududir");
1626: } else {
1627: &Failure($client, "bad_directory:$ududir\n","$cmd:$tail");
1628: }
1629: return 1;
1630: }
1631: ®ister_handler("du2", \&du2_handler, 0, 1, 0);
1632:
1633: #
1634: # The ls_handler routine should be considered obsolete and is retained
1635: # for communication with legacy servers. Please see the ls3_handler.
1.280 matthew 1636: #
1.239 foxr 1637: # ls - list the contents of a directory. For each file in the
1638: # selected directory the filename followed by the full output of
1639: # the stat function is returned. The returned info for each
1640: # file are separated by ':'. The stat fields are separated by &'s.
1.529 raeburn 1641: #
1642: # If the requested path contains /../ or is:
1643: #
1644: # 1. for a directory, and the path does not begin with one of:
1.530 raeburn 1645: # (a) /home/httpd/html/res/<domain>
1.539 raeburn 1646: # (b) /home/httpd/html/userfiles/
1.529 raeburn 1647: # (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
1648: # or is:
1649: #
1.538 raeburn 1650: # 2. for a file, and the path (after prepending) does not begin with one of:
1.539 raeburn 1651: # (a) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
1652: # (b) /home/httpd/html/res/<domain>/<username>/
1653: # (c) /home/httpd/html/userfiles/<domain>/<username>/
1.529 raeburn 1654: #
1655: # the response will be "refused".
1656: #
1.239 foxr 1657: # Parameters:
1658: # $cmd - The command that dispatched us (ls).
1659: # $ulsdir - The directory path to list... I'm not sure what this
1660: # is relative as things like ls:. return e.g.
1661: # no_such_dir.
1662: # $client - Socket open on the client.
1663: # Returns:
1664: # 1 - indicating that the daemon should not disconnect.
1665: # Side Effects:
1666: # The reply is written to $client.
1667: #
1668: sub ls_handler {
1.280 matthew 1669: # obsoleted by ls2_handler
1.239 foxr 1670: my ($cmd, $ulsdir, $client) = @_;
1671:
1672: my $userinput = "$cmd:$ulsdir";
1673:
1674: my $obs;
1675: my $rights;
1676: my $ulsout='';
1677: my $ulsfn;
1.529 raeburn 1678: if ($ulsdir =~m{/\.\./}) {
1679: &Failure($client,"refused\n",$userinput);
1680: return 1;
1681: }
1.239 foxr 1682: if (-e $ulsdir) {
1683: if(-d $ulsdir) {
1.539 raeburn 1684: unless (($ulsdir =~ m{^/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
1685: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/userfiles})) {
1.529 raeburn 1686: &Failure($client,"refused\n",$userinput);
1687: return 1;
1688: }
1.239 foxr 1689: if (opendir(LSDIR,$ulsdir)) {
1690: while ($ulsfn=readdir(LSDIR)) {
1.291 albertel 1691: undef($obs);
1692: undef($rights);
1.239 foxr 1693: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1694: #We do some obsolete checking here
1695: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1696: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1697: my @obsolete=<FILE>;
1698: foreach my $obsolete (@obsolete) {
1.301 www 1699: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1.239 foxr 1700: if($obsolete =~ m|(<copyright>)(default)|) { $rights = 1; }
1701: }
1702: }
1703: $ulsout.=$ulsfn.'&'.join('&',@ulsstats);
1704: if($obs eq '1') { $ulsout.="&1"; }
1705: else { $ulsout.="&0"; }
1706: if($rights eq '1') { $ulsout.="&1:"; }
1707: else { $ulsout.="&0:"; }
1708: }
1709: closedir(LSDIR);
1710: }
1711: } else {
1.539 raeburn 1712: unless (($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) ||
1713: ($ulsdir =~ m{^/home/httpd/html/(?:res|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/})) {
1.529 raeburn 1714: &Failure($client,"refused\n",$userinput);
1715: return 1;
1716: }
1.239 foxr 1717: my @ulsstats=stat($ulsdir);
1718: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1719: }
1720: } else {
1721: $ulsout='no_such_dir';
1722: }
1723: if ($ulsout eq '') { $ulsout='empty'; }
1.387 albertel 1724: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1.239 foxr 1725:
1726: return 1;
1727:
1728: }
1729: ®ister_handler("ls", \&ls_handler, 0, 1, 0);
1730:
1.399 raeburn 1731: # The ls2_handler routine should be considered obsolete and is retained
1732: # for communication with legacy servers. Please see the ls3_handler.
1733: # Please also see the ls_handler, which was itself obsoleted by ls2.
1.280 matthew 1734: # ls2_handler differs from ls_handler in that it escapes its return
1735: # values before concatenating them together with ':'s.
1736: #
1737: # ls2 - list the contents of a directory. For each file in the
1738: # selected directory the filename followed by the full output of
1739: # the stat function is returned. The returned info for each
1740: # file are separated by ':'. The stat fields are separated by &'s.
1.529 raeburn 1741: #
1742: # If the requested path contains /../ or is:
1743: #
1744: # 1. for a directory, and the path does not begin with one of:
1.530 raeburn 1745: # (a) /home/httpd/html/res/<domain>
1.539 raeburn 1746: # (b) /home/httpd/html/userfiles/
1.529 raeburn 1747: # (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
1748: # or is:
1749: #
1.538 raeburn 1750: # 2. for a file, and the path (after prepending) does not begin with one of:
1.539 raeburn 1751: # (a) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
1752: # (b) /home/httpd/html/res/<domain>/<username>/
1753: # (c) /home/httpd/html/userfiles/<domain>/<username>/
1.529 raeburn 1754: #
1755: # the response will be "refused".
1756: #
1.280 matthew 1757: # Parameters:
1758: # $cmd - The command that dispatched us (ls).
1759: # $ulsdir - The directory path to list... I'm not sure what this
1760: # is relative as things like ls:. return e.g.
1761: # no_such_dir.
1762: # $client - Socket open on the client.
1763: # Returns:
1764: # 1 - indicating that the daemon should not disconnect.
1765: # Side Effects:
1766: # The reply is written to $client.
1767: #
1768: sub ls2_handler {
1769: my ($cmd, $ulsdir, $client) = @_;
1770:
1771: my $userinput = "$cmd:$ulsdir";
1772:
1773: my $obs;
1774: my $rights;
1775: my $ulsout='';
1776: my $ulsfn;
1.529 raeburn 1777: if ($ulsdir =~m{/\.\./}) {
1778: &Failure($client,"refused\n",$userinput);
1779: return 1;
1780: }
1.280 matthew 1781: if (-e $ulsdir) {
1782: if(-d $ulsdir) {
1.539 raeburn 1783: unless (($ulsdir =~ m{^/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
1784: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/userfiles})) {
1.529 raeburn 1785: &Failure($client,"refused\n","$userinput");
1786: return 1;
1787: }
1.280 matthew 1788: if (opendir(LSDIR,$ulsdir)) {
1789: while ($ulsfn=readdir(LSDIR)) {
1.291 albertel 1790: undef($obs);
1791: undef($rights);
1.280 matthew 1792: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1793: #We do some obsolete checking here
1794: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1795: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1796: my @obsolete=<FILE>;
1797: foreach my $obsolete (@obsolete) {
1.301 www 1798: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1.280 matthew 1799: if($obsolete =~ m|(<copyright>)(default)|) {
1800: $rights = 1;
1801: }
1802: }
1803: }
1804: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1805: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1806: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1807: $ulsout.= &escape($tmp).':';
1808: }
1809: closedir(LSDIR);
1810: }
1811: } else {
1.539 raeburn 1812: unless (($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) ||
1813: ($ulsdir =~ m{^/home/httpd/html/(?:res|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/})) {
1.529 raeburn 1814: &Failure($client,"refused\n",$userinput);
1815: return 1;
1816: }
1.280 matthew 1817: my @ulsstats=stat($ulsdir);
1818: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1819: }
1820: } else {
1821: $ulsout='no_such_dir';
1822: }
1823: if ($ulsout eq '') { $ulsout='empty'; }
1.387 albertel 1824: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1.280 matthew 1825: return 1;
1826: }
1827: ®ister_handler("ls2", \&ls2_handler, 0, 1, 0);
1.399 raeburn 1828: #
1829: # ls3 - list the contents of a directory. For each file in the
1830: # selected directory the filename followed by the full output of
1831: # the stat function is returned. The returned info for each
1832: # file are separated by ':'. The stat fields are separated by &'s.
1.529 raeburn 1833: #
1834: # If the requested path (after prepending) contains /../ or is:
1835: #
1836: # 1. for a directory, and the path does not begin with one of:
1.530 raeburn 1837: # (a) /home/httpd/html/res/<domain>
1.539 raeburn 1838: # (b) /home/httpd/html/userfiles/
1.529 raeburn 1839: # (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
1.539 raeburn 1840: # (d) /home/httpd/html/priv/<domain> and client is the homeserver
1.529 raeburn 1841: #
1.530 raeburn 1842: # or is:
1.529 raeburn 1843: #
1.538 raeburn 1844: # 2. for a file, and the path (after prepending) does not begin with one of:
1.539 raeburn 1845: # (a) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
1846: # (b) /home/httpd/html/res/<domain>/<username>/
1847: # (c) /home/httpd/html/userfiles/<domain>/<username>/
1848: # (d) /home/httpd/html/priv/<domain>/<username>/ and client is the homeserver
1.529 raeburn 1849: #
1850: # the response will be "refused".
1851: #
1.399 raeburn 1852: # Parameters:
1853: # $cmd - The command that dispatched us (ls).
1854: # $tail - The tail of the request that invoked us.
1855: # $tail is a : separated list of the following:
1856: # - $ulsdir - directory path to list (before prepending)
1857: # - $getpropath = 1 if &propath() should prepend
1858: # - $getuserdir = 1 if path to user dir in lonUsers should
1859: # prepend
1860: # - $alternate_root - path to prepend
1861: # - $uname - username to use for &propath or user dir
1862: # - $udom - domain to use for &propath or user dir
1863: # All of these except $getpropath and &getuserdir are escaped.
1864: # no_such_dir.
1865: # $client - Socket open on the client.
1866: # Returns:
1867: # 1 - indicating that the daemon should not disconnect.
1868: # Side Effects:
1869: # The reply is written to $client.
1870: #
1871:
1872: sub ls3_handler {
1873: my ($cmd, $tail, $client) = @_;
1874: my $userinput = "$cmd:$tail";
1875: my ($ulsdir,$getpropath,$getuserdir,$alternate_root,$uname,$udom) =
1876: split(/:/,$tail);
1877: if (defined($ulsdir)) {
1878: $ulsdir = &unescape($ulsdir);
1879: }
1880: if (defined($alternate_root)) {
1881: $alternate_root = &unescape($alternate_root);
1882: }
1883: if (defined($uname)) {
1884: $uname = &unescape($uname);
1885: }
1886: if (defined($udom)) {
1887: $udom = &unescape($udom);
1888: }
1889:
1890: my $dir_root = $perlvar{'lonDocRoot'};
1.529 raeburn 1891: if (($getpropath) || ($getuserdir)) {
1.399 raeburn 1892: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1893: $dir_root = &propath($udom,$uname);
1894: $dir_root =~ s/\/$//;
1895: } else {
1.529 raeburn 1896: &Failure($client,"refused\n",$userinput);
1.399 raeburn 1897: return 1;
1898: }
1.400 raeburn 1899: } elsif ($alternate_root ne '') {
1.399 raeburn 1900: $dir_root = $alternate_root;
1901: }
1.408 raeburn 1902: if (($dir_root ne '') && ($dir_root ne '/')) {
1.400 raeburn 1903: if ($ulsdir =~ /^\//) {
1904: $ulsdir = $dir_root.$ulsdir;
1905: } else {
1906: $ulsdir = $dir_root.'/'.$ulsdir;
1907: }
1.399 raeburn 1908: }
1.529 raeburn 1909: if ($ulsdir =~m{/\.\./}) {
1910: &Failure($client,"refused\n",$userinput);
1911: return 1;
1912: }
1913: my $islocal;
1914: my @machine_ids = &Apache::lonnet::current_machine_ids();
1915: if (grep(/^\Q$clientname\E$/,@machine_ids)) {
1916: $islocal = 1;
1917: }
1.399 raeburn 1918: my $obs;
1919: my $rights;
1920: my $ulsout='';
1921: my $ulsfn;
1.547 raeburn 1922:
1923: my ($crscheck,$toplevel,$currdom,$currnum,$skip);
1924: unless ($islocal) {
1925: my ($major,$minor) = split(/\./,$clientversion);
1926: if (($major < 2) || ($major == 2 && $minor < 12)) {
1927: $crscheck = 1;
1928: }
1929: }
1.399 raeburn 1930: if (-e $ulsdir) {
1931: if(-d $ulsdir) {
1.529 raeburn 1932: unless (($getpropath) || ($getuserdir) ||
1.539 raeburn 1933: ($ulsdir =~ m{^/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
1934: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/userfiles}) ||
1935: (($ulsdir =~ m{^/home/httpd/html/priv/$LONCAPA::match_domain}) && ($islocal))) {
1.529 raeburn 1936: &Failure($client,"refused\n",$userinput);
1937: return 1;
1938: }
1.547 raeburn 1939: if (($crscheck) &&
1940: ($ulsdir =~ m{^/home/httpd/html/res/($LONCAPA::match_domain)(/?$|/$LONCAPA::match_courseid)})) {
1941: ($currdom,my $posscnum) = ($1,$2);
1942: if (($posscnum eq '') || ($posscnum eq '/')) {
1943: $toplevel = 1;
1944: } else {
1945: $posscnum =~ s{^/+}{};
1946: if (&LONCAPA::Lond::is_course($currdom,$posscnum)) {
1947: $skip = 1;
1948: }
1949: }
1950: }
1951: if ((!$skip) && (opendir(LSDIR,$ulsdir))) {
1.399 raeburn 1952: while ($ulsfn=readdir(LSDIR)) {
1.547 raeburn 1953: if (($crscheck) && ($toplevel) && ($currdom ne '') &&
1954: ($ulsfn =~ /^$LONCAPA::match_courseid$/) && (-d "$ulsdir/$ulsfn")) {
1955: if (&LONCAPA::Lond::is_course($currdom,$ulsfn)) {
1956: next;
1957: }
1958: }
1.399 raeburn 1959: undef($obs);
1960: undef($rights);
1961: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1962: #We do some obsolete checking here
1963: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1964: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1965: my @obsolete=<FILE>;
1966: foreach my $obsolete (@obsolete) {
1967: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1968: if($obsolete =~ m|(<copyright>)(default)|) {
1969: $rights = 1;
1970: }
1971: }
1972: }
1973: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1974: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1975: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1976: $ulsout.= &escape($tmp).':';
1977: }
1978: closedir(LSDIR);
1979: }
1980: } else {
1.529 raeburn 1981: unless (($getpropath) || ($getuserdir) ||
1.539 raeburn 1982: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) ||
1983: ($ulsdir =~ m{^/home/httpd/html/(?:res|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/}) ||
1984: (($ulsdir =~ m{^/home/httpd/html/priv/$LONCAPA::match_domain/$LONCAPA::match_name/}) && ($islocal))) {
1.529 raeburn 1985: &Failure($client,"refused\n",$userinput);
1986: return 1;
1987: }
1.399 raeburn 1988: my @ulsstats=stat($ulsdir);
1989: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1990: }
1991: } else {
1992: $ulsout='no_such_dir';
1.400 raeburn 1993: }
1994: if ($ulsout eq '') { $ulsout='empty'; }
1995: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1996: return 1;
1.399 raeburn 1997: }
1998: ®ister_handler("ls3", \&ls3_handler, 0, 1, 0);
1.280 matthew 1999:
1.477 raeburn 2000: sub read_lonnet_global {
2001: my ($cmd,$tail,$client) = @_;
2002: my $userinput = "$cmd:$tail";
2003: my $requested = &Apache::lonnet::thaw_unescape($tail);
2004: my $result;
1.480 raeburn 2005: my %packagevars = (
2006: spareid => \%Apache::lonnet::spareid,
2007: perlvar => \%Apache::lonnet::perlvar,
2008: );
2009: my %limit_to = (
2010: perlvar => {
1.531 raeburn 2011: lonOtherAuthen => 1,
2012: lonBalancer => 1,
2013: lonVersion => 1,
2014: lonAdmEMail => 1,
2015: lonSupportEMail => 1,
2016: lonSysEMail => 1,
2017: lonHostID => 1,
2018: lonRole => 1,
2019: lonDefDomain => 1,
2020: lonLoadLim => 1,
2021: lonUserLoadLim => 1,
1.480 raeburn 2022: }
2023: );
1.477 raeburn 2024: if (ref($requested) eq 'HASH') {
2025: foreach my $what (keys(%{$requested})) {
2026: my $response;
1.480 raeburn 2027: my $items = {};
2028: if (exists($packagevars{$what})) {
2029: if (ref($limit_to{$what}) eq 'HASH') {
2030: foreach my $varname (keys(%{$packagevars{$what}})) {
2031: if ($limit_to{$what}{$varname}) {
2032: $items->{$varname} = $packagevars{$what}{$varname};
2033: }
2034: }
2035: } else {
2036: $items = $packagevars{$what};
1.477 raeburn 2037: }
1.480 raeburn 2038: if ($what eq 'perlvar') {
2039: if (!exists($packagevars{$what}{'lonBalancer'})) {
1.570 raeburn 2040: if ($dist =~ /^(centos|rhes|fedora|scientific|oracle|rocky|alma)/) {
1.480 raeburn 2041: my $othervarref=LONCAPA::Configuration::read_conf('httpd.conf');
2042: if (ref($othervarref) eq 'HASH') {
2043: $items->{'lonBalancer'} = $othervarref->{'lonBalancer'};
2044: }
2045: }
2046: }
1.477 raeburn 2047: }
1.480 raeburn 2048: $response = &Apache::lonnet::freeze_escape($items);
1.477 raeburn 2049: }
1.478 raeburn 2050: $result .= &escape($what).'='.$response.'&';
1.477 raeburn 2051: }
2052: }
2053: $result =~ s/\&$//;
2054: &Reply($client,\$result,$userinput);
2055: return 1;
2056: }
2057: ®ister_handler("readlonnetglobal", \&read_lonnet_global, 0, 1, 0);
2058:
1.479 raeburn 2059: sub server_devalidatecache_handler {
2060: my ($cmd,$tail,$client) = @_;
2061: my $userinput = "$cmd:$tail";
1.503 raeburn 2062: my $items = &unescape($tail);
2063: my @cached = split(/\&/,$items);
2064: foreach my $key (@cached) {
2065: if ($key =~ /:/) {
2066: my ($name,$id) = map { &unescape($_); } split(/:/,$key);
2067: &Apache::lonnet::devalidate_cache_new($name,$id);
2068: }
2069: }
1.479 raeburn 2070: my $result = 'ok';
2071: &Reply($client,\$result,$userinput);
2072: return 1;
2073: }
1.481 raeburn 2074: ®ister_handler("devalidatecache", \&server_devalidatecache_handler, 0, 1, 0);
1.479 raeburn 2075:
1.410 raeburn 2076: sub server_timezone_handler {
2077: my ($cmd,$tail,$client) = @_;
2078: my $userinput = "$cmd:$tail";
2079: my $timezone;
2080: my $clockfile = '/etc/sysconfig/clock'; # Fedora/CentOS/SuSE
2081: my $tzfile = '/etc/timezone'; # Debian/Ubuntu
2082: if (-e $clockfile) {
2083: if (open(my $fh,"<$clockfile")) {
2084: while (<$fh>) {
2085: next if (/^[\#\s]/);
2086: if (/^(?:TIME)?ZONE\s*=\s*['"]?\s*([\w\/]+)/) {
2087: $timezone = $1;
2088: last;
2089: }
2090: }
2091: close($fh);
2092: }
2093: } elsif (-e $tzfile) {
2094: if (open(my $fh,"<$tzfile")) {
2095: $timezone = <$fh>;
2096: close($fh);
2097: chomp($timezone);
2098: if ($timezone =~ m{^Etc/(\w+)$}) {
2099: $timezone = $1;
2100: }
2101: }
2102: }
2103: &Reply($client,\$timezone,$userinput); # This supports debug logging.
2104: return 1;
2105: }
2106: ®ister_handler("servertimezone", \&server_timezone_handler, 0, 1, 0);
2107:
1.413 raeburn 2108: sub server_loncaparev_handler {
2109: my ($cmd,$tail,$client) = @_;
2110: my $userinput = "$cmd:$tail";
2111: &Reply($client,\$perlvar{'lonVersion'},$userinput);
2112: return 1;
2113: }
2114: ®ister_handler("serverloncaparev", \&server_loncaparev_handler, 0, 1, 0);
2115:
1.448 raeburn 2116: sub server_homeID_handler {
2117: my ($cmd,$tail,$client) = @_;
2118: my $userinput = "$cmd:$tail";
2119: &Reply($client,\$perlvar{'lonHostID'},$userinput);
2120: return 1;
2121: }
2122: ®ister_handler("serverhomeID", \&server_homeID_handler, 0, 1, 0);
2123:
1.471 raeburn 2124: sub server_distarch_handler {
2125: my ($cmd,$tail,$client) = @_;
2126: my $userinput = "$cmd:$tail";
2127: my $reply = &distro_and_arch();
2128: &Reply($client,\$reply,$userinput);
2129: return 1;
2130: }
2131: ®ister_handler("serverdistarch", \&server_distarch_handler, 0, 1, 0);
2132:
1.523 raeburn 2133: sub server_certs_handler {
2134: my ($cmd,$tail,$client) = @_;
2135: my $userinput = "$cmd:$tail";
1.548 raeburn 2136: my $hostname = &Apache::lonnet::hostname($perlvar{'lonHostID'});
2137: my $result = &LONCAPA::Lond::server_certs(\%perlvar,$perlvar{'lonHostID'},$hostname);
1.523 raeburn 2138: &Reply($client,\$result,$userinput);
2139: return;
2140: }
2141: ®ister_handler("servercerts", \&server_certs_handler, 0, 1, 0);
2142:
1.218 foxr 2143: # Process a reinit request. Reinit requests that either
2144: # lonc or lond be reinitialized so that an updated
2145: # host.tab or domain.tab can be processed.
2146: #
2147: # Parameters:
2148: # $cmd - the actual keyword that invoked us.
2149: # $tail - the tail of the request that invoked us.
2150: # $client - File descriptor connected to the client
2151: # Returns:
2152: # 1 - Ok to continue processing.
2153: # 0 - Program should exit
2154: # Implicit output:
2155: # a reply is sent to the client.
2156: #
2157: sub reinit_process_handler {
2158: my ($cmd, $tail, $client) = @_;
2159:
2160: my $userinput = "$cmd:$tail";
2161:
2162: my $cert = &GetCertificate($userinput);
2163: if(&ValidManager($cert)) {
2164: chomp($userinput);
2165: my $reply = &ReinitProcess($userinput);
1.387 albertel 2166: &Reply( $client, \$reply, $userinput);
1.218 foxr 2167: } else {
2168: &Failure( $client, "refused\n", $userinput);
2169: }
2170: return 1;
2171: }
2172: ®ister_handler("reinit", \&reinit_process_handler, 1, 0, 1);
2173:
2174: # Process the editing script for a table edit operation.
2175: # the editing operation must be encrypted and requested by
2176: # a manager host.
2177: #
2178: # Parameters:
2179: # $cmd - the actual keyword that invoked us.
2180: # $tail - the tail of the request that invoked us.
2181: # $client - File descriptor connected to the client
2182: # Returns:
2183: # 1 - Ok to continue processing.
2184: # 0 - Program should exit
2185: # Implicit output:
2186: # a reply is sent to the client.
2187: #
2188: sub edit_table_handler {
2189: my ($command, $tail, $client) = @_;
2190:
2191: my $userinput = "$command:$tail";
2192:
2193: my $cert = &GetCertificate($userinput);
2194: if(&ValidManager($cert)) {
2195: my($filetype, $script) = split(/:/, $tail);
2196: if (($filetype eq "hosts") ||
2197: ($filetype eq "domain")) {
2198: if($script ne "") {
2199: &Reply($client, # BUGBUG - EditFile
2200: &EditFile($userinput), # could fail.
2201: $userinput);
2202: } else {
2203: &Failure($client,"refused\n",$userinput);
2204: }
2205: } else {
2206: &Failure($client,"refused\n",$userinput);
2207: }
2208: } else {
2209: &Failure($client,"refused\n",$userinput);
2210: }
2211: return 1;
2212: }
1.263 albertel 2213: ®ister_handler("edit", \&edit_table_handler, 1, 0, 1);
1.218 foxr 2214:
1.220 foxr 2215: #
2216: # Authenticate a user against the LonCAPA authentication
2217: # database. Note that there are several authentication
2218: # possibilities:
2219: # - unix - The user can be authenticated against the unix
2220: # password file.
2221: # - internal - The user can be authenticated against a purely
2222: # internal per user password file.
2223: # - kerberos - The user can be authenticated against either a kerb4 or kerb5
2224: # ticket granting authority.
2225: # - user - The person tailoring LonCAPA can supply a user authentication
2226: # mechanism that is per system.
2227: #
2228: # Parameters:
2229: # $cmd - The command that got us here.
2230: # $tail - Tail of the command (remaining parameters).
2231: # $client - File descriptor connected to client.
2232: # Returns
2233: # 0 - Requested to exit, caller should shut down.
2234: # 1 - Continue processing.
2235: # Implicit inputs:
2236: # The authentication systems describe above have their own forms of implicit
2237: # input into the authentication process that are described above.
2238: #
2239: sub authenticate_handler {
2240: my ($cmd, $tail, $client) = @_;
2241:
2242:
2243: # Regenerate the full input line
2244:
2245: my $userinput = $cmd.":".$tail;
2246:
2247: # udom - User's domain.
2248: # uname - Username.
2249: # upass - User's password.
1.396 raeburn 2250: # checkdefauth - Pass to validate_user() to try authentication
2251: # with default auth type(s) if no user account.
1.447 raeburn 2252: # clientcancheckhost - Passed by clients with functionality in lonauth.pm
2253: # to check if session can be hosted.
1.220 foxr 2254:
1.447 raeburn 2255: my ($udom, $uname, $upass, $checkdefauth, $clientcancheckhost)=split(/:/,$tail);
1.399 raeburn 2256: &Debug(" Authenticate domain = $udom, user = $uname, password = $upass, checkdefauth = $checkdefauth");
1.220 foxr 2257: chomp($upass);
2258: $upass=&unescape($upass);
2259:
1.396 raeburn 2260: my $pwdcorrect = &validate_user($udom,$uname,$upass,$checkdefauth);
1.220 foxr 2261: if($pwdcorrect) {
1.447 raeburn 2262: my $canhost = 1;
2263: unless ($clientcancheckhost) {
1.448 raeburn 2264: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
2265: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1.452 raeburn 2266: my @intdoms;
2267: my $internet_names = &Apache::lonnet::get_internet_names($clientname);
2268: if (ref($internet_names) eq 'ARRAY') {
2269: @intdoms = @{$internet_names};
2270: }
1.448 raeburn 2271: unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
1.447 raeburn 2272: my ($remote,$hosted);
2273: my $remotesession = &get_usersession_config($udom,'remotesession');
2274: if (ref($remotesession) eq 'HASH') {
1.525 raeburn 2275: $remote = $remotesession->{'remote'};
1.447 raeburn 2276: }
1.448 raeburn 2277: my $hostedsession = &get_usersession_config($clienthomedom,'hostedsession');
1.447 raeburn 2278: if (ref($hostedsession) eq 'HASH') {
2279: $hosted = $hostedsession->{'hosted'};
2280: }
1.448 raeburn 2281: $canhost = &Apache::lonnet::can_host_session($udom,$clientname,
1.492 droeschl 2282: $clientversion,
1.447 raeburn 2283: $remote,$hosted);
2284: }
2285: }
2286: if ($canhost) {
2287: &Reply( $client, "authorized\n", $userinput);
2288: } else {
2289: &Reply( $client, "not_allowed_to_host\n", $userinput);
2290: }
1.220 foxr 2291: #
2292: # Bad credentials: Failed to authorize
2293: #
2294: } else {
2295: &Failure( $client, "non_authorized\n", $userinput);
2296: }
2297:
2298: return 1;
2299: }
1.263 albertel 2300: ®ister_handler("auth", \&authenticate_handler, 1, 1, 0);
1.214 foxr 2301:
1.222 foxr 2302: #
2303: # Change a user's password. Note that this function is complicated by
2304: # the fact that a user may be authenticated in more than one way:
2305: # At present, we are not able to change the password for all types of
2306: # authentication methods. Only for:
2307: # unix - unix password or shadow passoword style authentication.
2308: # local - Locally written authentication mechanism.
2309: # For now, kerb4 and kerb5 password changes are not supported and result
2310: # in an error.
2311: # FUTURE WORK:
2312: # Support kerberos passwd changes?
2313: # Parameters:
2314: # $cmd - The command that got us here.
2315: # $tail - Tail of the command (remaining parameters).
2316: # $client - File descriptor connected to client.
2317: # Returns
2318: # 0 - Requested to exit, caller should shut down.
2319: # 1 - Continue processing.
2320: # Implicit inputs:
2321: # The authentication systems describe above have their own forms of implicit
2322: # input into the authentication process that are described above.
2323: sub change_password_handler {
2324: my ($cmd, $tail, $client) = @_;
2325:
2326: my $userinput = $cmd.":".$tail; # Reconstruct client's string.
2327:
2328: #
2329: # udom - user's domain.
2330: # uname - Username.
2331: # upass - Current password.
2332: # npass - New password.
1.346 raeburn 2333: # context - Context in which this was called
2334: # (preferences or reset_by_email).
1.428 raeburn 2335: # lonhost - HostID of server where request originated
1.222 foxr 2336:
1.428 raeburn 2337: my ($udom,$uname,$upass,$npass,$context,$lonhost)=split(/:/,$tail);
1.222 foxr 2338:
2339: $upass=&unescape($upass);
2340: $npass=&unescape($npass);
2341: &Debug("Trying to change password for $uname");
2342:
2343: # First require that the user can be authenticated with their
1.346 raeburn 2344: # old password unless context was 'reset_by_email':
2345:
1.428 raeburn 2346: my ($validated,$failure);
1.346 raeburn 2347: if ($context eq 'reset_by_email') {
1.428 raeburn 2348: if ($lonhost eq '') {
2349: $failure = 'invalid_client';
2350: } else {
2351: $validated = 1;
2352: }
1.346 raeburn 2353: } else {
2354: $validated = &validate_user($udom, $uname, $upass);
2355: }
1.222 foxr 2356: if($validated) {
2357: my $realpasswd = &get_auth_type($udom, $uname); # Defined since authd.
2358: my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
1.558 raeburn 2359: my $notunique;
1.222 foxr 2360: if ($howpwd eq 'internal') {
2361: &Debug("internal auth");
1.518 raeburn 2362: my $ncpass = &hash_passwd($udom,$npass);
1.558 raeburn 2363: my (undef,$method,@rest) = split(/!/,$contentpwd);
2364: if ($method eq 'bcrypt') {
2365: my %passwdconf = &Apache::lonnet::get_passwdconf($udom);
2366: if (($passwdconf{'numsaved'}) && ($passwdconf{'numsaved'} =~ /^\d+$/)) {
2367: my @oldpasswds;
2368: my $userpath = &propath($udom,$uname);
2369: my $fullpath = $userpath.'/oldpasswds';
2370: if (-d $userpath) {
2371: my @oldfiles;
2372: if (-e $fullpath) {
2373: if (opendir(my $dir,$fullpath)) {
2374: (@oldfiles) = grep(/^\d+$/,readdir($dir));
2375: closedir($dir);
2376: }
2377: if (@oldfiles) {
2378: @oldfiles = sort { $b <=> $a } (@oldfiles);
2379: my $numremoved = 0;
2380: for (my $i=0; $i<@oldfiles; $i++) {
2381: if ($i>=$passwdconf{'numsaved'}) {
2382: if (-f "$fullpath/$oldfiles[$i]") {
2383: if (unlink("$fullpath/$oldfiles[$i]")) {
2384: $numremoved ++;
2385: }
2386: }
2387: } elsif (open(my $fh,'<',"$fullpath/$oldfiles[$i]")) {
2388: while (my $line = <$fh>) {
2389: push(@oldpasswds,$line);
2390: }
2391: close($fh);
2392: }
2393: }
2394: if ($numremoved) {
2395: &logthis("unlinked $numremoved old password files for $uname:$udom");
2396: }
2397: }
2398: }
2399: push(@oldpasswds,$contentpwd);
2400: foreach my $item (@oldpasswds) {
2401: my (undef,$method,@rest) = split(/!/,$item);
2402: if ($method eq 'bcrypt') {
2403: my $result = &hash_passwd($udom,$npass,@rest);
2404: if ($result eq $item) {
2405: $notunique = 1;
2406: last;
2407: }
2408: }
2409: }
2410: unless ($notunique) {
2411: unless (-e $fullpath) {
2412: if (&mkpath("$fullpath/")) {
2413: chmod(0700,$fullpath);
2414: }
2415: }
2416: if (-d $fullpath) {
2417: my $now = time;
2418: if (open(my $fh,'>',"$fullpath/$now")) {
2419: print $fh $contentpwd;
2420: close($fh);
2421: chmod(0400,"$fullpath/$now");
2422: }
2423: }
2424: }
2425: }
2426: }
2427: }
2428: if ($notunique) {
2429: my $msg="Result of password change for $uname:$udom - password matches one used before";
2430: if ($lonhost) {
2431: $msg .= " - request originated from: $lonhost";
2432: }
2433: &logthis($msg);
2434: &Reply($client, "prioruse\n", $userinput);
2435: } elsif (&rewrite_password_file($udom, $uname, "internal:$ncpass")) {
1.428 raeburn 2436: my $msg="Result of password change for $uname: pwchange_success";
2437: if ($lonhost) {
2438: $msg .= " - request originated from: $lonhost";
2439: }
2440: &logthis($msg);
1.518 raeburn 2441: &update_passwd_history($uname,$udom,$howpwd,$context);
1.222 foxr 2442: &Reply($client, "ok\n", $userinput);
2443: } else {
2444: &logthis("Unable to open $uname passwd "
2445: ."to change password");
2446: &Failure( $client, "non_authorized\n",$userinput);
2447: }
1.346 raeburn 2448: } elsif ($howpwd eq 'unix' && $context ne 'reset_by_email') {
1.287 foxr 2449: my $result = &change_unix_password($uname, $npass);
1.518 raeburn 2450: if ($result eq 'ok') {
2451: &update_passwd_history($uname,$udom,$howpwd,$context);
1.561 raeburn 2452: }
1.222 foxr 2453: &logthis("Result of password change for $uname: ".
1.287 foxr 2454: $result);
1.387 albertel 2455: &Reply($client, \$result, $userinput);
1.222 foxr 2456: } else {
2457: # this just means that the current password mode is not
2458: # one we know how to change (e.g the kerberos auth modes or
2459: # locally written auth handler).
2460: #
2461: &Failure( $client, "auth_mode_error\n", $userinput);
2462: }
1.224 foxr 2463: } else {
1.428 raeburn 2464: if ($failure eq '') {
2465: $failure = 'non_authorized';
2466: }
2467: &Failure( $client, "$failure\n", $userinput);
1.222 foxr 2468: }
2469:
2470: return 1;
2471: }
1.263 albertel 2472: ®ister_handler("passwd", \&change_password_handler, 1, 1, 0);
1.222 foxr 2473:
1.518 raeburn 2474: sub hash_passwd {
2475: my ($domain,$plainpass,@rest) = @_;
2476: my ($salt,$cost);
2477: if (@rest) {
2478: $cost = $rest[0];
2479: # salt is first 22 characters, base-64 encoded by bcrypt
2480: my $plainsalt = substr($rest[1],0,22);
2481: $salt = Crypt::Eksblowfish::Bcrypt::de_base64($plainsalt);
2482: } else {
1.533 raeburn 2483: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
2484: my $defaultcost = $domdefaults{'intauth_cost'};
1.518 raeburn 2485: if (($defaultcost eq '') || ($defaultcost =~ /D/)) {
2486: $cost = 10;
2487: } else {
2488: $cost = $defaultcost;
2489: }
2490: # Generate random 16-octet base64 salt
2491: $salt = "";
2492: $salt .= pack("C", int rand(256)) for 1..16;
2493: }
2494: my $hash = &Crypt::Eksblowfish::Bcrypt::bcrypt_hash({
2495: key_nul => 1,
2496: cost => $cost,
2497: salt => $salt,
2498: }, Digest::SHA::sha512(Encode::encode('UTF-8',$plainpass)));
2499:
2500: my $result = join("!", "", "bcrypt", sprintf("%02d",$cost),
2501: &Crypt::Eksblowfish::Bcrypt::en_base64($salt).
2502: &Crypt::Eksblowfish::Bcrypt::en_base64($hash));
2503: return $result;
2504: }
2505:
1.225 foxr 2506: #
2507: # Create a new user. User in this case means a lon-capa user.
2508: # The user must either already exist in some authentication realm
2509: # like kerberos or the /etc/passwd. If not, a user completely local to
2510: # this loncapa system is created.
2511: #
2512: # Parameters:
2513: # $cmd - The command that got us here.
2514: # $tail - Tail of the command (remaining parameters).
2515: # $client - File descriptor connected to client.
2516: # Returns
2517: # 0 - Requested to exit, caller should shut down.
2518: # 1 - Continue processing.
2519: # Implicit inputs:
2520: # The authentication systems describe above have their own forms of implicit
2521: # input into the authentication process that are described above.
2522: sub add_user_handler {
2523:
2524: my ($cmd, $tail, $client) = @_;
2525:
2526:
2527: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2528: my $userinput = $cmd.":".$tail; # Reconstruct the full request line.
2529:
2530: &Debug("cmd =".$cmd." $udom =".$udom." uname=".$uname);
2531:
2532:
2533: if($udom eq $currentdomainid) { # Reject new users for other domains...
2534:
2535: my $oldumask=umask(0077);
2536: chomp($npass);
2537: $npass=&unescape($npass);
2538: my $passfilename = &password_path($udom, $uname);
2539: &Debug("Password file created will be:".$passfilename);
2540: if (-e $passfilename) {
2541: &Failure( $client, "already_exists\n", $userinput);
2542: } else {
2543: my $fperror='';
1.264 albertel 2544: if (!&mkpath($passfilename)) {
2545: $fperror="error: ".($!+0)." mkdir failed while attempting "
2546: ."makeuser";
1.225 foxr 2547: }
2548: unless ($fperror) {
1.518 raeburn 2549: my $result=&make_passwd_file($uname,$udom,$umode,$npass,
2550: $passfilename,'makeuser');
1.390 raeburn 2551: &Reply($client,\$result, $userinput); #BUGBUG - could be fail
1.225 foxr 2552: } else {
1.387 albertel 2553: &Failure($client, \$fperror, $userinput);
1.225 foxr 2554: }
2555: }
2556: umask($oldumask);
2557: } else {
2558: &Failure($client, "not_right_domain\n",
2559: $userinput); # Even if we are multihomed.
2560:
2561: }
2562: return 1;
2563:
2564: }
2565: ®ister_handler("makeuser", \&add_user_handler, 1, 1, 0);
2566:
2567: #
2568: # Change the authentication method of a user. Note that this may
2569: # also implicitly change the user's password if, for example, the user is
2570: # joining an existing authentication realm. Known authentication realms at
2571: # this time are:
2572: # internal - Purely internal password file (only loncapa knows this user)
2573: # local - Institutionally written authentication module.
2574: # unix - Unix user (/etc/passwd with or without /etc/shadow).
2575: # kerb4 - kerberos version 4
2576: # kerb5 - kerberos version 5
2577: #
2578: # Parameters:
2579: # $cmd - The command that got us here.
2580: # $tail - Tail of the command (remaining parameters).
2581: # $client - File descriptor connected to client.
2582: # Returns
2583: # 0 - Requested to exit, caller should shut down.
2584: # 1 - Continue processing.
2585: # Implicit inputs:
2586: # The authentication systems describe above have their own forms of implicit
2587: # input into the authentication process that are described above.
1.287 foxr 2588: # NOTE:
2589: # This is also used to change the authentication credential values (e.g. passwd).
2590: #
1.225 foxr 2591: #
2592: sub change_authentication_handler {
2593:
2594: my ($cmd, $tail, $client) = @_;
2595:
2596: my $userinput = "$cmd:$tail"; # Reconstruct user input.
2597:
2598: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2599: &Debug("cmd = ".$cmd." domain= ".$udom."uname =".$uname." umode= ".$umode);
2600: if ($udom ne $currentdomainid) {
2601: &Failure( $client, "not_right_domain\n", $client);
2602: } else {
2603:
2604: chomp($npass);
2605:
2606: $npass=&unescape($npass);
1.261 foxr 2607: my $oldauth = &get_auth_type($udom, $uname); # Get old auth info.
1.225 foxr 2608: my $passfilename = &password_path($udom, $uname);
2609: if ($passfilename) { # Not allowed to create a new user!!
1.287 foxr 2610: # If just changing the unix passwd. need to arrange to run
1.502 raeburn 2611: # passwd since otherwise make_passwd_file will fail as
2612: # creation of unix authenticated users is no longer supported
2613: # except from the command line, when running make_domain_coordinator.pl
1.287 foxr 2614:
2615: if(($oldauth =~/^unix/) && ($umode eq "unix")) {
2616: my $result = &change_unix_password($uname, $npass);
2617: &logthis("Result of password change for $uname: ".$result);
2618: if ($result eq "ok") {
1.518 raeburn 2619: &update_passwd_history($uname,$udom,$umode,'changeuserauth');
1.390 raeburn 2620: &Reply($client, \$result);
1.288 albertel 2621: } else {
1.387 albertel 2622: &Failure($client, \$result);
1.287 foxr 2623: }
1.288 albertel 2624: } else {
1.518 raeburn 2625: my $result=&make_passwd_file($uname,$udom,$umode,$npass,
2626: $passfilename,'changeuserauth');
1.287 foxr 2627: #
2628: # If the current auth mode is internal, and the old auth mode was
2629: # unix, or krb*, and the user is an author for this domain,
2630: # re-run manage_permissions for that role in order to be able
2631: # to take ownership of the construction space back to www:www
2632: #
1.502 raeburn 2633:
2634:
1.387 albertel 2635: &Reply($client, \$result, $userinput);
1.261 foxr 2636: }
2637:
2638:
1.225 foxr 2639: } else {
1.251 foxr 2640: &Failure($client, "non_authorized\n", $userinput); # Fail the user now.
1.225 foxr 2641: }
2642: }
2643: return 1;
2644: }
2645: ®ister_handler("changeuserauth", \&change_authentication_handler, 1,1, 0);
2646:
1.518 raeburn 2647: sub update_passwd_history {
2648: my ($uname,$udom,$umode,$context) = @_;
2649: my $proname=&propath($udom,$uname);
2650: my $now = time;
2651: if (open(my $fh,">>$proname/passwd.log")) {
2652: print $fh "$now:$umode:$context\n";
2653: close($fh);
2654: }
2655: return;
2656: }
2657:
1.225 foxr 2658: #
2659: # Determines if this is the home server for a user. The home server
2660: # for a user will have his/her lon-capa passwd file. Therefore all we need
2661: # to do is determine if this file exists.
2662: #
2663: # Parameters:
2664: # $cmd - The command that got us here.
2665: # $tail - Tail of the command (remaining parameters).
2666: # $client - File descriptor connected to client.
2667: # Returns
2668: # 0 - Requested to exit, caller should shut down.
2669: # 1 - Continue processing.
2670: # Implicit inputs:
2671: # The authentication systems describe above have their own forms of implicit
2672: # input into the authentication process that are described above.
2673: #
2674: sub is_home_handler {
2675: my ($cmd, $tail, $client) = @_;
2676:
2677: my $userinput = "$cmd:$tail";
2678:
2679: my ($udom,$uname)=split(/:/,$tail);
2680: chomp($uname);
2681: my $passfile = &password_filename($udom, $uname);
2682: if($passfile) {
2683: &Reply( $client, "found\n", $userinput);
2684: } else {
2685: &Failure($client, "not_found\n", $userinput);
2686: }
2687: return 1;
2688: }
2689: ®ister_handler("home", \&is_home_handler, 0,1,0);
2690:
2691: #
1.434 www 2692: # Process an update request for a resource.
2693: # A resource has been modified that we hold a subscription to.
1.225 foxr 2694: # If the resource is not local, then we must update, or at least invalidate our
2695: # cached copy of the resource.
2696: # Parameters:
2697: # $cmd - The command that got us here.
2698: # $tail - Tail of the command (remaining parameters).
2699: # $client - File descriptor connected to client.
2700: # Returns
2701: # 0 - Requested to exit, caller should shut down.
2702: # 1 - Continue processing.
2703: # Implicit inputs:
2704: # The authentication systems describe above have their own forms of implicit
2705: # input into the authentication process that are described above.
2706: #
2707: sub update_resource_handler {
2708:
2709: my ($cmd, $tail, $client) = @_;
2710:
2711: my $userinput = "$cmd:$tail";
2712:
2713: my $fname= $tail; # This allows interactive testing
2714:
2715:
2716: my $ownership=ishome($fname);
2717: if ($ownership eq 'not_owner') {
2718: if (-e $fname) {
1.434 www 2719: # Delete preview file, if exists
2720: unlink("$fname.tmp");
2721: # Get usage stats
1.225 foxr 2722: my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
2723: $atime,$mtime,$ctime,$blksize,$blocks)=stat($fname);
2724: my $now=time;
2725: my $since=$now-$atime;
1.434 www 2726: # If the file has not been used within lonExpire seconds,
2727: # unsubscribe from it and delete local copy
1.225 foxr 2728: if ($since>$perlvar{'lonExpire'}) {
1.365 albertel 2729: my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
1.308 albertel 2730: &devalidate_meta_cache($fname);
1.225 foxr 2731: unlink("$fname");
1.334 albertel 2732: unlink("$fname.meta");
1.225 foxr 2733: } else {
1.434 www 2734: # Yes, this is in active use. Get a fresh copy. Since it might be in
2735: # very active use and huge (like a movie), copy it to "in.transfer" filename first.
1.225 foxr 2736: my $transname="$fname.in.transfer";
1.365 albertel 2737: my $remoteurl=&Apache::lonnet::reply("sub:$fname","$clientname");
1.225 foxr 2738: my $response;
1.537 raeburn 2739: # FIXME: cannot replicate files that take more than two minutes to transfer -- needs checking now 1200s timeout used
2740: # for LWP request.
2741: my $request=new HTTP::Request('GET',"$remoteurl");
2742: $response=&LONCAPA::LWPReq::makerequest($clientname,$request,$transname,\%perlvar,1200,0,1);
1.225 foxr 2743: if ($response->is_error()) {
1.541 raeburn 2744: my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
2745: &devalidate_meta_cache($fname);
2746: if (-e $transname) {
2747: unlink($transname);
2748: }
2749: unlink($fname);
1.225 foxr 2750: my $message=$response->status_line;
2751: &logthis("LWP GET: $message for $fname ($remoteurl)");
2752: } else {
2753: if ($remoteurl!~/\.meta$/) {
1.537 raeburn 2754: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2755: my $mresponse = &LONCAPA::LWPReq::makerequest($clientname,$mrequest,$fname.'.meta',\%perlvar,120,0,1);
2756: if ($mresponse->is_error()) {
2757: unlink($fname.'.meta');
1.225 foxr 2758: }
2759: }
1.434 www 2760: # we successfully transfered, copy file over to real name
1.225 foxr 2761: rename($transname,$fname);
1.308 albertel 2762: &devalidate_meta_cache($fname);
1.225 foxr 2763: }
2764: }
2765: &Reply( $client, "ok\n", $userinput);
2766: } else {
2767: &Failure($client, "not_found\n", $userinput);
2768: }
2769: } else {
2770: &Failure($client, "rejected\n", $userinput);
2771: }
2772: return 1;
2773: }
2774: ®ister_handler("update", \&update_resource_handler, 0 ,1, 0);
2775:
1.308 albertel 2776: sub devalidate_meta_cache {
2777: my ($url) = @_;
2778: use Cache::Memcached;
2779: my $memcache = new Cache::Memcached({'servers'=>['127.0.0.1:11211']});
1.365 albertel 2780: $url = &Apache::lonnet::declutter($url);
1.308 albertel 2781: $url =~ s-\.meta$--;
2782: my $id = &escape('meta:'.$url);
2783: $memcache->delete($id);
2784: }
2785:
1.225 foxr 2786: #
1.226 foxr 2787: # Fetch a user file from a remote server to the user's home directory
2788: # userfiles subdir.
1.225 foxr 2789: # Parameters:
2790: # $cmd - The command that got us here.
2791: # $tail - Tail of the command (remaining parameters).
2792: # $client - File descriptor connected to client.
2793: # Returns
2794: # 0 - Requested to exit, caller should shut down.
2795: # 1 - Continue processing.
2796: #
2797: sub fetch_user_file_handler {
2798:
2799: my ($cmd, $tail, $client) = @_;
2800:
2801: my $userinput = "$cmd:$tail";
2802: my $fname = $tail;
1.232 foxr 2803: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
1.225 foxr 2804: my $udir=&propath($udom,$uname).'/userfiles';
2805: unless (-e $udir) {
2806: mkdir($udir,0770);
2807: }
1.232 foxr 2808: Debug("fetch user file for $fname");
1.225 foxr 2809: if (-e $udir) {
2810: $ufile=~s/^[\.\~]+//;
1.232 foxr 2811:
2812: # IF necessary, create the path right down to the file.
2813: # Note that any regular files in the way of this path are
2814: # wiped out to deal with some earlier folly of mine.
2815:
1.267 raeburn 2816: if (!&mkpath($udir.'/'.$ufile)) {
1.264 albertel 2817: &Failure($client, "unable_to_create\n", $userinput);
1.232 foxr 2818: }
2819:
1.225 foxr 2820: my $destname=$udir.'/'.$ufile;
2821: my $transname=$udir.'/'.$ufile.'.in.transit';
1.476 raeburn 2822: my $clientprotocol=$Apache::lonnet::protocol{$clientname};
2823: $clientprotocol = 'http' if ($clientprotocol ne 'https');
1.486 raeburn 2824: my $clienthost = &Apache::lonnet::hostname($clientname);
2825: my $remoteurl=$clientprotocol.'://'.$clienthost.'/userfiles/'.$fname;
1.225 foxr 2826: my $response;
1.232 foxr 2827: Debug("Remote URL : $remoteurl Transfername $transname Destname: $destname");
1.537 raeburn 2828: my $request=new HTTP::Request('GET',"$remoteurl");
2829: my $verifycert = 1;
2830: my @machine_ids = &Apache::lonnet::current_machine_ids();
2831: if (grep(/^\Q$clientname\E$/,@machine_ids)) {
2832: $verifycert = 0;
2833: }
2834: $response = &LONCAPA::LWPReq::makerequest($clientname,$request,$transname,\%perlvar,1200,$verifycert);
1.225 foxr 2835: if ($response->is_error()) {
2836: unlink($transname);
2837: my $message=$response->status_line;
2838: &logthis("LWP GET: $message for $fname ($remoteurl)");
2839: &Failure($client, "failed\n", $userinput);
2840: } else {
1.232 foxr 2841: Debug("Renaming $transname to $destname");
1.225 foxr 2842: if (!rename($transname,$destname)) {
2843: &logthis("Unable to move $transname to $destname");
2844: unlink($transname);
2845: &Failure($client, "failed\n", $userinput);
2846: } else {
1.495 raeburn 2847: if ($fname =~ /^default.+\.(page|sequence)$/) {
2848: my ($major,$minor) = split(/\./,$clientversion);
2849: if (($major < 2) || ($major == 2 && $minor < 11)) {
2850: my $now = time;
2851: &Apache::lonnet::do_cache_new('crschange',$udom.'_'.$uname,$now,600);
2852: my $key = &escape('internal.contentchange');
2853: my $what = "$key=$now";
2854: my $hashref = &tie_user_hash($udom,$uname,'environment',
2855: &GDBM_WRCREAT(),"P",$what);
2856: if ($hashref) {
2857: $hashref->{$key}=$now;
2858: if (!&untie_user_hash($hashref)) {
2859: &logthis("error: ".($!+0)." untie (GDBM) failed ".
2860: "when updating internal.contentchange");
2861: }
2862: }
2863: }
2864: }
1.225 foxr 2865: &Reply($client, "ok\n", $userinput);
2866: }
2867: }
2868: } else {
2869: &Failure($client, "not_home\n", $userinput);
2870: }
2871: return 1;
2872: }
2873: ®ister_handler("fetchuserfile", \&fetch_user_file_handler, 0, 1, 0);
2874:
1.226 foxr 2875: #
2876: # Remove a file from a user's home directory userfiles subdirectory.
2877: # Parameters:
2878: # cmd - the Lond request keyword that got us here.
2879: # tail - the part of the command past the keyword.
2880: # client- File descriptor connected with the client.
2881: #
2882: # Returns:
2883: # 1 - Continue processing.
2884: sub remove_user_file_handler {
2885: my ($cmd, $tail, $client) = @_;
2886:
2887: my ($fname) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2888:
2889: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
2890: if ($ufile =~m|/\.\./|) {
2891: # any files paths with /../ in them refuse
2892: # to deal with
2893: &Failure($client, "refused\n", "$cmd:$tail");
2894: } else {
2895: my $udir = &propath($udom,$uname);
2896: if (-e $udir) {
2897: my $file=$udir.'/userfiles/'.$ufile;
2898: if (-e $file) {
1.253 foxr 2899: #
2900: # If the file is a regular file unlink is fine...
1.520 raeburn 2901: # However it's possible the client wants a dir
2902: # removed, in which case rmdir is more appropriate.
2903: # Note: rmdir will only remove an empty directory.
1.253 foxr 2904: #
1.240 banghart 2905: if (-f $file){
1.241 albertel 2906: unlink($file);
1.520 raeburn 2907: # for html files remove the associated .bak file
2908: # which may have been created by the editor.
2909: if ($ufile =~ m{^((docs|supplemental)/(?:\d+|default)/\d+(?:|/.+)/)[^/]+\.x?html?$}i) {
2910: my $path = $1;
2911: if (-e $file.'.bak') {
2912: unlink($file.'.bak');
2913: }
2914: }
1.241 albertel 2915: } elsif(-d $file) {
2916: rmdir($file);
1.240 banghart 2917: }
1.226 foxr 2918: if (-e $file) {
1.253 foxr 2919: # File is still there after we deleted it ?!?
2920:
1.226 foxr 2921: &Failure($client, "failed\n", "$cmd:$tail");
2922: } else {
2923: &Reply($client, "ok\n", "$cmd:$tail");
2924: }
2925: } else {
2926: &Failure($client, "not_found\n", "$cmd:$tail");
2927: }
2928: } else {
2929: &Failure($client, "not_home\n", "$cmd:$tail");
2930: }
2931: }
2932: return 1;
2933: }
2934: ®ister_handler("removeuserfile", \&remove_user_file_handler, 0,1,0);
2935:
1.236 albertel 2936: #
2937: # make a directory in a user's home directory userfiles subdirectory.
2938: # Parameters:
2939: # cmd - the Lond request keyword that got us here.
2940: # tail - the part of the command past the keyword.
2941: # client- File descriptor connected with the client.
2942: #
2943: # Returns:
2944: # 1 - Continue processing.
2945: sub mkdir_user_file_handler {
2946: my ($cmd, $tail, $client) = @_;
2947:
2948: my ($dir) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2949: $dir=&unescape($dir);
2950: my ($udom,$uname,$ufile) = ($dir =~ m|^([^/]+)/([^/]+)/(.+)$|);
2951: if ($ufile =~m|/\.\./|) {
2952: # any files paths with /../ in them refuse
2953: # to deal with
2954: &Failure($client, "refused\n", "$cmd:$tail");
2955: } else {
2956: my $udir = &propath($udom,$uname);
2957: if (-e $udir) {
1.264 albertel 2958: my $newdir=$udir.'/userfiles/'.$ufile.'/';
2959: if (!&mkpath($newdir)) {
2960: &Failure($client, "failed\n", "$cmd:$tail");
1.236 albertel 2961: }
1.264 albertel 2962: &Reply($client, "ok\n", "$cmd:$tail");
1.236 albertel 2963: } else {
2964: &Failure($client, "not_home\n", "$cmd:$tail");
2965: }
2966: }
2967: return 1;
2968: }
2969: ®ister_handler("mkdiruserfile", \&mkdir_user_file_handler, 0,1,0);
2970:
1.237 albertel 2971: #
2972: # rename a file in a user's home directory userfiles subdirectory.
2973: # Parameters:
2974: # cmd - the Lond request keyword that got us here.
2975: # tail - the part of the command past the keyword.
2976: # client- File descriptor connected with the client.
2977: #
2978: # Returns:
2979: # 1 - Continue processing.
2980: sub rename_user_file_handler {
2981: my ($cmd, $tail, $client) = @_;
2982:
2983: my ($udom,$uname,$old,$new) = split(/:/, $tail);
2984: $old=&unescape($old);
2985: $new=&unescape($new);
2986: if ($new =~m|/\.\./| || $old =~m|/\.\./|) {
2987: # any files paths with /../ in them refuse to deal with
2988: &Failure($client, "refused\n", "$cmd:$tail");
2989: } else {
2990: my $udir = &propath($udom,$uname);
2991: if (-e $udir) {
2992: my $oldfile=$udir.'/userfiles/'.$old;
2993: my $newfile=$udir.'/userfiles/'.$new;
2994: if (-e $newfile) {
2995: &Failure($client, "exists\n", "$cmd:$tail");
2996: } elsif (! -e $oldfile) {
2997: &Failure($client, "not_found\n", "$cmd:$tail");
2998: } else {
2999: if (!rename($oldfile,$newfile)) {
3000: &Failure($client, "failed\n", "$cmd:$tail");
3001: } else {
3002: &Reply($client, "ok\n", "$cmd:$tail");
3003: }
3004: }
3005: } else {
3006: &Failure($client, "not_home\n", "$cmd:$tail");
3007: }
3008: }
3009: return 1;
3010: }
3011: ®ister_handler("renameuserfile", \&rename_user_file_handler, 0,1,0);
3012:
1.227 foxr 3013: #
1.382 albertel 3014: # Checks if the specified user has an active session on the server
3015: # return ok if so, not_found if not
3016: #
3017: # Parameters:
3018: # cmd - The request keyword that dispatched to tus.
3019: # tail - The tail of the request (colon separated parameters).
3020: # client - Filehandle open on the client.
3021: # Return:
3022: # 1.
3023: sub user_has_session_handler {
3024: my ($cmd, $tail, $client) = @_;
3025:
3026: my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail));
3027:
3028: opendir(DIR,$perlvar{'lonIDsDir'});
3029: my $filename;
3030: while ($filename=readdir(DIR)) {
3031: last if ($filename=~/^\Q$uname\E_\d+_\Q$udom\E_/);
3032: }
3033: if ($filename) {
3034: &Reply($client, "ok\n", "$cmd:$tail");
3035: } else {
3036: &Failure($client, "not_found\n", "$cmd:$tail");
3037: }
3038: return 1;
3039:
3040: }
3041: ®ister_handler("userhassession", \&user_has_session_handler, 0,1,0);
3042:
1.560 raeburn 3043: sub del_usersession_handler {
3044: my ($cmd, $tail, $client) = @_;
3045:
3046: my $result;
3047: my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail));
3048: if (($udom =~ /^$LONCAPA::match_domain$/) && ($uname =~ /^$LONCAPA::match_username$/)) {
3049: my $lonidsdir = $perlvar{'lonIDsDir'};
3050: if (-d $lonidsdir) {
3051: if (opendir(DIR,$lonidsdir)) {
3052: my $filename;
3053: while ($filename=readdir(DIR)) {
3054: if ($filename=~/^\Q$uname\E_\d+_\Q$udom\E_/) {
3055: if (tie(my %oldenv,'GDBM_File',"$lonidsdir/$filename",
3056: &GDBM_READER(),0640)) {
3057: my $linkedfile;
3058: if (exists($oldenv{'user.linkedenv'})) {
3059: $linkedfile = $oldenv{'user.linkedenv'};
3060: }
3061: untie(%oldenv);
3062: $result = unlink("$lonidsdir/$filename");
3063: if ($result) {
3064: if ($linkedfile =~ /^[a-f0-9]+_linked$/) {
3065: if (-l "$lonidsdir/$linkedfile.id") {
3066: unlink("$lonidsdir/$linkedfile.id");
3067: }
3068: }
3069: }
3070: } else {
3071: $result = unlink("$lonidsdir/$filename");
3072: }
3073: last;
3074: }
3075: }
3076: }
3077: }
3078: if ($result == 1) {
3079: &Reply($client, "$result\n", "$cmd:$tail");
3080: } else {
3081: &Reply($client, "not_found\n", "$cmd:$tail");
3082: }
3083: } else {
3084: &Failure($client, "invalid_user\n", "$cmd:$tail");
3085: }
3086: return 1;
3087: }
3088:
3089: ®ister_handler("delusersession", \&del_usersession_handler, 0,1,0);
3090:
1.382 albertel 3091: #
1.263 albertel 3092: # Authenticate access to a user file by checking that the token the user's
3093: # passed also exists in their session file
1.227 foxr 3094: #
3095: # Parameters:
3096: # cmd - The request keyword that dispatched to tus.
3097: # tail - The tail of the request (colon separated parameters).
3098: # client - Filehandle open on the client.
3099: # Return:
3100: # 1.
3101: sub token_auth_user_file_handler {
3102: my ($cmd, $tail, $client) = @_;
3103:
3104: my ($fname, $session) = split(/:/, $tail);
3105:
3106: chomp($session);
1.393 raeburn 3107: my $reply="non_auth";
1.343 albertel 3108: my $file = $perlvar{'lonIDsDir'}.'/'.$session.'.id';
3109: if (open(ENVIN,"$file")) {
1.332 albertel 3110: flock(ENVIN,LOCK_SH);
1.343 albertel 3111: tie(my %disk_env,'GDBM_File',"$file",&GDBM_READER(),0640);
3112: if (exists($disk_env{"userfile.$fname"})) {
1.393 raeburn 3113: $reply="ok";
1.343 albertel 3114: } else {
3115: foreach my $envname (keys(%disk_env)) {
3116: if ($envname=~ m|^userfile\.\Q$fname\E|) {
1.393 raeburn 3117: $reply="ok";
1.343 albertel 3118: last;
3119: }
3120: }
1.227 foxr 3121: }
1.343 albertel 3122: untie(%disk_env);
1.227 foxr 3123: close(ENVIN);
1.387 albertel 3124: &Reply($client, \$reply, "$cmd:$tail");
1.227 foxr 3125: } else {
3126: &Failure($client, "invalid_token\n", "$cmd:$tail");
3127: }
3128: return 1;
3129:
3130: }
3131: ®ister_handler("tokenauthuserfile", \&token_auth_user_file_handler, 0,1,0);
1.229 foxr 3132:
3133: #
3134: # Unsubscribe from a resource.
3135: #
3136: # Parameters:
3137: # $cmd - The command that got us here.
3138: # $tail - Tail of the command (remaining parameters).
3139: # $client - File descriptor connected to client.
3140: # Returns
3141: # 0 - Requested to exit, caller should shut down.
3142: # 1 - Continue processing.
3143: #
3144: sub unsubscribe_handler {
3145: my ($cmd, $tail, $client) = @_;
3146:
3147: my $userinput= "$cmd:$tail";
3148:
3149: my ($fname) = split(/:/,$tail); # Split in case there's extrs.
3150:
3151: &Debug("Unsubscribing $fname");
3152: if (-e $fname) {
3153: &Debug("Exists");
3154: &Reply($client, &unsub($fname,$clientip), $userinput);
3155: } else {
3156: &Failure($client, "not_found\n", $userinput);
3157: }
3158: return 1;
3159: }
3160: ®ister_handler("unsub", \&unsubscribe_handler, 0, 1, 0);
1.263 albertel 3161:
1.230 foxr 3162: # Subscribe to a resource
3163: #
3164: # Parameters:
3165: # $cmd - The command that got us here.
3166: # $tail - Tail of the command (remaining parameters).
3167: # $client - File descriptor connected to client.
3168: # Returns
3169: # 0 - Requested to exit, caller should shut down.
3170: # 1 - Continue processing.
3171: #
3172: sub subscribe_handler {
3173: my ($cmd, $tail, $client)= @_;
3174:
3175: my $userinput = "$cmd:$tail";
3176:
3177: &Reply( $client, &subscribe($userinput,$clientip), $userinput);
3178:
3179: return 1;
3180: }
3181: ®ister_handler("sub", \&subscribe_handler, 0, 1, 0);
3182:
3183: #
1.379 albertel 3184: # Determine the latest version of a resource (it looks for the highest
3185: # past version and then returns that +1)
1.230 foxr 3186: #
3187: # Parameters:
3188: # $cmd - The command that got us here.
3189: # $tail - Tail of the command (remaining parameters).
1.379 albertel 3190: # (Should consist of an absolute path to a file)
1.230 foxr 3191: # $client - File descriptor connected to client.
3192: # Returns
3193: # 0 - Requested to exit, caller should shut down.
3194: # 1 - Continue processing.
3195: #
3196: sub current_version_handler {
3197: my ($cmd, $tail, $client) = @_;
3198:
3199: my $userinput= "$cmd:$tail";
3200:
3201: my $fname = $tail;
3202: &Reply( $client, ¤tversion($fname)."\n", $userinput);
3203: return 1;
3204:
3205: }
3206: ®ister_handler("currentversion", \¤t_version_handler, 0, 1, 0);
3207:
3208: # Make an entry in a user's activity log.
3209: #
3210: # Parameters:
3211: # $cmd - The command that got us here.
3212: # $tail - Tail of the command (remaining parameters).
3213: # $client - File descriptor connected to client.
3214: # Returns
3215: # 0 - Requested to exit, caller should shut down.
3216: # 1 - Continue processing.
3217: #
3218: sub activity_log_handler {
3219: my ($cmd, $tail, $client) = @_;
3220:
3221:
3222: my $userinput= "$cmd:$tail";
3223:
3224: my ($udom,$uname,$what)=split(/:/,$tail);
3225: chomp($what);
3226: my $proname=&propath($udom,$uname);
3227: my $now=time;
3228: my $hfh;
3229: if ($hfh=IO::File->new(">>$proname/activity.log")) {
3230: print $hfh "$now:$clientname:$what\n";
3231: &Reply( $client, "ok\n", $userinput);
3232: } else {
3233: &Failure($client, "error: ".($!+0)." IO::File->new Failed "
3234: ."while attempting log\n",
3235: $userinput);
3236: }
3237:
3238: return 1;
3239: }
1.263 albertel 3240: ®ister_handler("log", \&activity_log_handler, 0, 1, 0);
1.230 foxr 3241:
3242: #
3243: # Put a namespace entry in a user profile hash.
3244: # My druthers would be for this to be an encrypted interaction too.
3245: # anything that might be an inadvertent covert channel about either
3246: # user authentication or user personal information....
3247: #
3248: # Parameters:
3249: # $cmd - The command that got us here.
3250: # $tail - Tail of the command (remaining parameters).
3251: # $client - File descriptor connected to client.
3252: # Returns
3253: # 0 - Requested to exit, caller should shut down.
3254: # 1 - Continue processing.
3255: #
3256: sub put_user_profile_entry {
3257: my ($cmd, $tail, $client) = @_;
1.229 foxr 3258:
1.230 foxr 3259: my $userinput = "$cmd:$tail";
3260:
1.242 raeburn 3261: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
1.230 foxr 3262: if ($namespace ne 'roles') {
3263: chomp($what);
3264: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3265: &GDBM_WRCREAT(),"P",$what);
3266: if($hashref) {
3267: my @pairs=split(/\&/,$what);
3268: foreach my $pair (@pairs) {
3269: my ($key,$value)=split(/=/,$pair);
3270: $hashref->{$key}=$value;
3271: }
1.311 albertel 3272: if (&untie_user_hash($hashref)) {
1.230 foxr 3273: &Reply( $client, "ok\n", $userinput);
3274: } else {
3275: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
3276: "while attempting put\n",
3277: $userinput);
3278: }
3279: } else {
1.316 albertel 3280: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.230 foxr 3281: "while attempting put\n", $userinput);
3282: }
3283: } else {
3284: &Failure( $client, "refused\n", $userinput);
3285: }
3286:
3287: return 1;
3288: }
3289: ®ister_handler("put", \&put_user_profile_entry, 0, 1, 0);
3290:
1.283 albertel 3291: # Put a piece of new data in hash, returns error if entry already exists
3292: # Parameters:
3293: # $cmd - The command that got us here.
3294: # $tail - Tail of the command (remaining parameters).
3295: # $client - File descriptor connected to client.
3296: # Returns
3297: # 0 - Requested to exit, caller should shut down.
3298: # 1 - Continue processing.
3299: #
3300: sub newput_user_profile_entry {
3301: my ($cmd, $tail, $client) = @_;
3302:
3303: my $userinput = "$cmd:$tail";
3304:
3305: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
3306: if ($namespace eq 'roles') {
3307: &Failure( $client, "refused\n", $userinput);
3308: return 1;
3309: }
3310:
3311: chomp($what);
3312:
3313: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3314: &GDBM_WRCREAT(),"N",$what);
3315: if(!$hashref) {
1.316 albertel 3316: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.283 albertel 3317: "while attempting put\n", $userinput);
3318: return 1;
3319: }
3320:
3321: my @pairs=split(/\&/,$what);
3322: foreach my $pair (@pairs) {
3323: my ($key,$value)=split(/=/,$pair);
3324: if (exists($hashref->{$key})) {
1.513 raeburn 3325: if (!&untie_user_hash($hashref)) {
3326: &logthis("error: ".($!+0)." untie (GDBM) failed ".
3327: "while attempting newput - early out as key exists");
3328: }
3329: &Failure($client, "key_exists: ".$key."\n",$userinput);
3330: return 1;
1.283 albertel 3331: }
3332: }
3333:
3334: foreach my $pair (@pairs) {
3335: my ($key,$value)=split(/=/,$pair);
3336: $hashref->{$key}=$value;
3337: }
3338:
1.311 albertel 3339: if (&untie_user_hash($hashref)) {
1.283 albertel 3340: &Reply( $client, "ok\n", $userinput);
3341: } else {
3342: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
3343: "while attempting put\n",
3344: $userinput);
3345: }
3346: return 1;
3347: }
3348: ®ister_handler("newput", \&newput_user_profile_entry, 0, 1, 0);
3349:
1.230 foxr 3350: #
3351: # Increment a profile entry in the user history file.
3352: # The history contains keyword value pairs. In this case,
3353: # The value itself is a pair of numbers. The first, the current value
3354: # the second an increment that this function applies to the current
3355: # value.
3356: #
3357: # Parameters:
3358: # $cmd - The command that got us here.
3359: # $tail - Tail of the command (remaining parameters).
3360: # $client - File descriptor connected to client.
3361: # Returns
3362: # 0 - Requested to exit, caller should shut down.
3363: # 1 - Continue processing.
3364: #
3365: sub increment_user_value_handler {
3366: my ($cmd, $tail, $client) = @_;
3367:
3368: my $userinput = "$cmd:$tail";
3369:
3370: my ($udom,$uname,$namespace,$what) =split(/:/,$tail);
3371: if ($namespace ne 'roles') {
3372: chomp($what);
3373: my $hashref = &tie_user_hash($udom, $uname,
3374: $namespace, &GDBM_WRCREAT(),
3375: "P",$what);
3376: if ($hashref) {
3377: my @pairs=split(/\&/,$what);
3378: foreach my $pair (@pairs) {
3379: my ($key,$value)=split(/=/,$pair);
1.284 raeburn 3380: $value = &unescape($value);
1.230 foxr 3381: # We could check that we have a number...
3382: if (! defined($value) || $value eq '') {
3383: $value = 1;
3384: }
3385: $hashref->{$key}+=$value;
1.284 raeburn 3386: if ($namespace eq 'nohist_resourcetracker') {
3387: if ($hashref->{$key} < 0) {
3388: $hashref->{$key} = 0;
3389: }
3390: }
1.230 foxr 3391: }
1.311 albertel 3392: if (&untie_user_hash($hashref)) {
1.230 foxr 3393: &Reply( $client, "ok\n", $userinput);
3394: } else {
3395: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
3396: "while attempting inc\n", $userinput);
3397: }
3398: } else {
3399: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3400: "while attempting inc\n", $userinput);
3401: }
3402: } else {
3403: &Failure($client, "refused\n", $userinput);
3404: }
3405:
3406: return 1;
3407: }
3408: ®ister_handler("inc", \&increment_user_value_handler, 0, 1, 0);
3409:
3410: #
3411: # Put a new role for a user. Roles are LonCAPA's packaging of permissions.
3412: # Each 'role' a user has implies a set of permissions. Adding a new role
3413: # for a person grants the permissions packaged with that role
3414: # to that user when the role is selected.
3415: #
3416: # Parameters:
3417: # $cmd - The command string (rolesput).
3418: # $tail - The remainder of the request line. For rolesput this
3419: # consists of a colon separated list that contains:
3420: # The domain and user that is granting the role (logged).
3421: # The domain and user that is getting the role.
3422: # The roles being granted as a set of & separated pairs.
3423: # each pair a key value pair.
3424: # $client - File descriptor connected to the client.
3425: # Returns:
3426: # 0 - If the daemon should exit
3427: # 1 - To continue processing.
3428: #
3429: #
3430: sub roles_put_handler {
3431: my ($cmd, $tail, $client) = @_;
3432:
3433: my $userinput = "$cmd:$tail";
3434:
3435: my ( $exedom, $exeuser, $udom, $uname, $what) = split(/:/,$tail);
3436:
3437:
3438: my $namespace='roles';
3439: chomp($what);
3440: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3441: &GDBM_WRCREAT(), "P",
3442: "$exedom:$exeuser:$what");
3443: #
3444: # Log the attempt to set a role. The {}'s here ensure that the file
3445: # handle is open for the minimal amount of time. Since the flush
3446: # is done on close this improves the chances the log will be an un-
3447: # corrupted ordered thing.
3448: if ($hashref) {
1.261 foxr 3449: my $pass_entry = &get_auth_type($udom, $uname);
3450: my ($auth_type,$pwd) = split(/:/, $pass_entry);
3451: $auth_type = $auth_type.":";
1.230 foxr 3452: my @pairs=split(/\&/,$what);
3453: foreach my $pair (@pairs) {
3454: my ($key,$value)=split(/=/,$pair);
3455: &manage_permissions($key, $udom, $uname,
1.260 foxr 3456: $auth_type);
1.230 foxr 3457: $hashref->{$key}=$value;
3458: }
1.311 albertel 3459: if (&untie_user_hash($hashref)) {
1.230 foxr 3460: &Reply($client, "ok\n", $userinput);
3461: } else {
3462: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3463: "while attempting rolesput\n", $userinput);
3464: }
3465: } else {
3466: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3467: "while attempting rolesput\n", $userinput);
3468: }
3469: return 1;
3470: }
3471: ®ister_handler("rolesput", \&roles_put_handler, 1,1,0); # Encoded client only.
3472:
3473: #
1.231 foxr 3474: # Deletes (removes) a role for a user. This is equivalent to removing
3475: # a permissions package associated with the role from the user's profile.
3476: #
3477: # Parameters:
3478: # $cmd - The command (rolesdel)
3479: # $tail - The remainder of the request line. This consists
3480: # of:
3481: # The domain and user requesting the change (logged)
3482: # The domain and user being changed.
3483: # The roles being revoked. These are shipped to us
3484: # as a bunch of & separated role name keywords.
3485: # $client - The file handle open on the client.
3486: # Returns:
3487: # 1 - Continue processing
3488: # 0 - Exit.
3489: #
3490: sub roles_delete_handler {
3491: my ($cmd, $tail, $client) = @_;
3492:
3493: my $userinput = "$cmd:$tail";
3494:
3495: my ($exedom,$exeuser,$udom,$uname,$what)=split(/:/,$tail);
3496: &Debug("cmd = ".$cmd." exedom= ".$exedom."user = ".$exeuser." udom=".$udom.
3497: "what = ".$what);
3498: my $namespace='roles';
3499: chomp($what);
3500: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3501: &GDBM_WRCREAT(), "D",
3502: "$exedom:$exeuser:$what");
3503:
3504: if ($hashref) {
3505: my @rolekeys=split(/\&/,$what);
3506:
3507: foreach my $key (@rolekeys) {
3508: delete $hashref->{$key};
3509: }
1.315 albertel 3510: if (&untie_user_hash($hashref)) {
1.231 foxr 3511: &Reply($client, "ok\n", $userinput);
3512: } else {
3513: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3514: "while attempting rolesdel\n", $userinput);
3515: }
3516: } else {
3517: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3518: "while attempting rolesdel\n", $userinput);
3519: }
3520:
3521: return 1;
3522: }
3523: ®ister_handler("rolesdel", \&roles_delete_handler, 1,1, 0); # Encoded client only
3524:
3525: # Unencrypted get from a user's profile database. See
3526: # GetProfileEntryEncrypted for a version that does end-to-end encryption.
3527: # This function retrieves a keyed item from a specific named database in the
3528: # user's directory.
3529: #
3530: # Parameters:
3531: # $cmd - Command request keyword (get).
3532: # $tail - Tail of the command. This is a colon separated list
3533: # consisting of the domain and username that uniquely
3534: # identifies the profile,
3535: # The 'namespace' which selects the gdbm file to
3536: # do the lookup in,
3537: # & separated list of keys to lookup. Note that
3538: # the values are returned as an & separated list too.
3539: # $client - File descriptor open on the client.
3540: # Returns:
3541: # 1 - Continue processing.
3542: # 0 - Exit.
3543: #
3544: sub get_profile_entry {
3545: my ($cmd, $tail, $client) = @_;
3546:
3547: my $userinput= "$cmd:$tail";
3548:
3549: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3550: chomp($what);
1.255 foxr 3551:
1.390 raeburn 3552:
1.255 foxr 3553: my $replystring = read_profile($udom, $uname, $namespace, $what);
3554: my ($first) = split(/:/,$replystring);
3555: if($first ne "error") {
1.387 albertel 3556: &Reply($client, \$replystring, $userinput);
1.231 foxr 3557: } else {
1.255 foxr 3558: &Failure($client, $replystring." while attempting get\n", $userinput);
1.231 foxr 3559: }
3560: return 1;
1.255 foxr 3561:
3562:
1.231 foxr 3563: }
3564: ®ister_handler("get", \&get_profile_entry, 0,1,0);
3565:
3566: #
3567: # Process the encrypted get request. Note that the request is sent
3568: # in clear, but the reply is encrypted. This is a small covert channel:
3569: # information about the sensitive keys is given to the snooper. Just not
3570: # information about the values of the sensitive key. Hmm if I wanted to
3571: # know these I'd snoop for the egets. Get the profile item names from them
3572: # and then issue a get for them since there's no enforcement of the
3573: # requirement of an encrypted get for particular profile items. If I
3574: # were re-doing this, I'd force the request to be encrypted as well as the
3575: # reply. I'd also just enforce encrypted transactions for all gets since
3576: # that would prevent any covert channel snooping.
3577: #
3578: # Parameters:
3579: # $cmd - Command keyword of request (eget).
1.536 raeburn 3580: # $tail - Tail of the command. See GetProfileEntry
3581: # for more information about this.
1.231 foxr 3582: # $client - File open on the client.
3583: # Returns:
3584: # 1 - Continue processing
3585: # 0 - server should exit.
3586: sub get_profile_entry_encrypted {
3587: my ($cmd, $tail, $client) = @_;
3588:
3589: my $userinput = "$cmd:$tail";
3590:
1.339 albertel 3591: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
1.231 foxr 3592: chomp($what);
1.255 foxr 3593: my $qresult = read_profile($udom, $uname, $namespace, $what);
3594: my ($first) = split(/:/, $qresult);
3595: if($first ne "error") {
3596:
3597: if ($cipher) {
3598: my $cmdlength=length($qresult);
3599: $qresult.=" ";
3600: my $encqresult='';
3601: for(my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
3602: $encqresult.= unpack("H16",
3603: $cipher->encrypt(substr($qresult,
3604: $encidx,
3605: 8)));
3606: }
3607: &Reply( $client, "enc:$cmdlength:$encqresult\n", $userinput);
3608: } else {
1.231 foxr 3609: &Failure( $client, "error:no_key\n", $userinput);
3610: }
3611: } else {
1.255 foxr 3612: &Failure($client, "$qresult while attempting eget\n", $userinput);
3613:
1.231 foxr 3614: }
3615:
3616: return 1;
3617: }
1.255 foxr 3618: ®ister_handler("eget", \&get_profile_entry_encrypted, 0, 1, 0);
1.263 albertel 3619:
1.231 foxr 3620: #
3621: # Deletes a key in a user profile database.
3622: #
3623: # Parameters:
3624: # $cmd - Command keyword (del).
3625: # $tail - Command tail. IN this case a colon
3626: # separated list containing:
3627: # The domain and user that identifies uniquely
3628: # the identity of the user.
3629: # The profile namespace (name of the profile
3630: # database file).
3631: # & separated list of keywords to delete.
3632: # $client - File open on client socket.
3633: # Returns:
3634: # 1 - Continue processing
3635: # 0 - Exit server.
3636: #
3637: #
3638: sub delete_profile_entry {
3639: my ($cmd, $tail, $client) = @_;
3640:
3641: my $userinput = "cmd:$tail";
3642:
3643: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3644: chomp($what);
3645: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3646: &GDBM_WRCREAT(),
3647: "D",$what);
3648: if ($hashref) {
3649: my @keys=split(/\&/,$what);
3650: foreach my $key (@keys) {
3651: delete($hashref->{$key});
3652: }
1.315 albertel 3653: if (&untie_user_hash($hashref)) {
1.231 foxr 3654: &Reply($client, "ok\n", $userinput);
3655: } else {
3656: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3657: "while attempting del\n", $userinput);
3658: }
3659: } else {
3660: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3661: "while attempting del\n", $userinput);
3662: }
3663: return 1;
3664: }
3665: ®ister_handler("del", \&delete_profile_entry, 0, 1, 0);
1.263 albertel 3666:
1.231 foxr 3667: #
3668: # List the set of keys that are defined in a profile database file.
3669: # A successful reply from this will contain an & separated list of
3670: # the keys.
3671: # Parameters:
3672: # $cmd - Command request (keys).
3673: # $tail - Remainder of the request, a colon separated
3674: # list containing domain/user that identifies the
3675: # user being queried, and the database namespace
3676: # (database filename essentially).
3677: # $client - File open on the client.
3678: # Returns:
3679: # 1 - Continue processing.
3680: # 0 - Exit the server.
3681: #
3682: sub get_profile_keys {
3683: my ($cmd, $tail, $client) = @_;
3684:
3685: my $userinput = "$cmd:$tail";
3686:
3687: my ($udom,$uname,$namespace)=split(/:/,$tail);
3688: my $qresult='';
3689: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3690: &GDBM_READER());
3691: if ($hashref) {
3692: foreach my $key (keys %$hashref) {
3693: $qresult.="$key&";
3694: }
1.315 albertel 3695: if (&untie_user_hash($hashref)) {
1.231 foxr 3696: $qresult=~s/\&$//;
1.387 albertel 3697: &Reply($client, \$qresult, $userinput);
1.231 foxr 3698: } else {
3699: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3700: "while attempting keys\n", $userinput);
3701: }
3702: } else {
3703: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3704: "while attempting keys\n", $userinput);
3705: }
3706:
3707: return 1;
3708: }
3709: ®ister_handler("keys", \&get_profile_keys, 0, 1, 0);
3710:
3711: #
3712: # Dump the contents of a user profile database.
3713: # Note that this constitutes a very large covert channel too since
3714: # the dump will return sensitive information that is not encrypted.
3715: # The naive security assumption is that the session negotiation ensures
3716: # our client is trusted and I don't believe that's assured at present.
3717: # Sure want badly to go to ssl or tls. Of course if my peer isn't really
3718: # a LonCAPA node they could have negotiated an encryption key too so >sigh<.
3719: #
3720: # Parameters:
3721: # $cmd - The command request keyword (currentdump).
3722: # $tail - Remainder of the request, consisting of a colon
3723: # separated list that has the domain/username and
3724: # the namespace to dump (database file).
3725: # $client - file open on the remote client.
3726: # Returns:
3727: # 1 - Continue processing.
3728: # 0 - Exit the server.
3729: #
3730: sub dump_profile_database {
3731: my ($cmd, $tail, $client) = @_;
3732:
1.494 droeschl 3733: my $res = LONCAPA::Lond::dump_profile_database($tail);
3734:
3735: if ($res =~ /^error:/) {
3736: Failure($client, \$res, "$cmd:$tail");
3737: } else {
3738: Reply($client, \$res, "$cmd:$tail");
3739: }
3740:
3741: return 1;
3742:
3743: #TODO remove
1.231 foxr 3744: my $userinput = "$cmd:$tail";
3745:
3746: my ($udom,$uname,$namespace) = split(/:/,$tail);
3747: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3748: &GDBM_READER());
3749: if ($hashref) {
3750: # Structure of %data:
3751: # $data{$symb}->{$parameter}=$value;
3752: # $data{$symb}->{'v.'.$parameter}=$version;
3753: # since $parameter will be unescaped, we do not
3754: # have to worry about silly parameter names...
3755:
3756: my $qresult='';
3757: my %data = (); # A hash of anonymous hashes..
3758: while (my ($key,$value) = each(%$hashref)) {
3759: my ($v,$symb,$param) = split(/:/,$key);
3760: next if ($v eq 'version' || $symb eq 'keys');
3761: next if (exists($data{$symb}) &&
3762: exists($data{$symb}->{$param}) &&
3763: $data{$symb}->{'v.'.$param} > $v);
3764: $data{$symb}->{$param}=$value;
3765: $data{$symb}->{'v.'.$param}=$v;
3766: }
1.311 albertel 3767: if (&untie_user_hash($hashref)) {
1.231 foxr 3768: while (my ($symb,$param_hash) = each(%data)) {
3769: while(my ($param,$value) = each (%$param_hash)){
3770: next if ($param =~ /^v\./); # Ignore versions...
3771: #
3772: # Just dump the symb=value pairs separated by &
3773: #
3774: $qresult.=$symb.':'.$param.'='.$value.'&';
3775: }
3776: }
3777: chop($qresult);
1.387 albertel 3778: &Reply($client , \$qresult, $userinput);
1.231 foxr 3779: } else {
3780: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3781: "while attempting currentdump\n", $userinput);
3782: }
3783: } else {
3784: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3785: "while attempting currentdump\n", $userinput);
3786: }
3787:
3788: return 1;
3789: }
3790: ®ister_handler("currentdump", \&dump_profile_database, 0, 1, 0);
3791:
3792: #
3793: # Dump a profile database with an optional regular expression
3794: # to match against the keys. In this dump, no effort is made
3795: # to separate symb from version information. Presumably the
3796: # databases that are dumped by this command are of a different
3797: # structure. Need to look at this and improve the documentation of
3798: # both this and the currentdump handler.
3799: # Parameters:
3800: # $cmd - The command keyword.
3801: # $tail - All of the characters after the $cmd:
3802: # These are expected to be a colon
3803: # separated list containing:
3804: # domain/user - identifying the user.
3805: # namespace - identifying the database.
3806: # regexp - optional regular expression
3807: # that is matched against
3808: # database keywords to do
3809: # selective dumps.
1.488 raeburn 3810: # range - optional range of entries
3811: # e.g., 10-20 would return the
3812: # 10th to 19th items, etc.
1.231 foxr 3813: # $client - Channel open on the client.
3814: # Returns:
3815: # 1 - Continue processing.
3816: # Side effects:
3817: # response is written to $client.
3818: #
3819: sub dump_with_regexp {
3820: my ($cmd, $tail, $client) = @_;
3821:
1.494 droeschl 3822: my $res = LONCAPA::Lond::dump_with_regexp($tail, $clientversion);
1.490 droeschl 3823:
3824: if ($res =~ /^error:/) {
3825: Failure($client, \$res, "$cmd:$tail");
3826: } else {
3827: Reply($client, \$res, "$cmd:$tail");
3828: }
1.231 foxr 3829:
3830: return 1;
3831: }
3832: ®ister_handler("dump", \&dump_with_regexp, 0, 1, 0);
3833:
1.568 raeburn 3834: #
3835: # Process the encrypted dump request. Original call should
3836: # be from lonnet::dump() with seventh arg ($encrypt) set to
3837: # 1, to ensure that both request and response are encrypted.
3838: #
3839: # Parameters:
3840: # $cmd - Command keyword of request (edump).
3841: # $tail - Tail of the command.
3842: # See &dump_with_regexp for more
3843: # information about this.
3844: # $client - File open on the client.
3845: # Returns:
3846: # 1 - Continue processing
3847: # 0 - server should exit.
3848: #
3849:
3850: sub encrypted_dump_with_regexp {
3851: my ($cmd, $tail, $client) = @_;
3852: my $res = LONCAPA::Lond::dump_with_regexp($tail, $clientversion);
3853:
3854: if ($res =~ /^error:/) {
3855: Failure($client, \$res, "$cmd:$tail");
3856: } else {
3857: if ($cipher) {
3858: my $cmdlength=length($res);
3859: $res.=" ";
3860: my $encres='';
3861: for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
3862: $encres.= unpack("H16",
3863: $cipher->encrypt(substr($res,
3864: $encidx,
3865: 8)));
3866: }
3867: &Reply( $client,"enc:$cmdlength:$encres\n","$cmd:$tail");
3868: } else {
3869: &Failure( $client, "error:no_key\n","$cmd:$tail");
3870: }
3871: }
3872: }
3873: ®ister_handler("edump", \&encrypted_dump_with_regexp, 0, 1, 0);
3874:
1.231 foxr 3875: # Store a set of key=value pairs associated with a versioned name.
3876: #
3877: # Parameters:
3878: # $cmd - Request command keyword.
3879: # $tail - Tail of the request. This is a colon
3880: # separated list containing:
3881: # domain/user - User and authentication domain.
3882: # namespace - Name of the database being modified
3883: # rid - Resource keyword to modify.
3884: # what - new value associated with rid.
1.512 raeburn 3885: # laststore - (optional) version=timestamp
3886: # for most recent transaction for rid
3887: # in namespace, when cstore was called
1.231 foxr 3888: #
3889: # $client - Socket open on the client.
3890: #
3891: #
3892: # Returns:
3893: # 1 (keep on processing).
3894: # Side-Effects:
3895: # Writes to the client
1.512 raeburn 3896: # Successful storage will cause either 'ok', or, if $laststore was included
3897: # in the tail of the request, and the version number for the last transaction
3898: # is larger than the version in $laststore, delay:$numtrans , where $numtrans
3899: # is the number of store evevnts recorded for rid in namespace since
3900: # lonnet::store() was called by the client.
3901: #
1.231 foxr 3902: sub store_handler {
3903: my ($cmd, $tail, $client) = @_;
3904:
3905: my $userinput = "$cmd:$tail";
1.512 raeburn 3906: chomp($tail);
3907: my ($udom,$uname,$namespace,$rid,$what,$laststore) =split(/:/,$tail);
1.231 foxr 3908: if ($namespace ne 'roles') {
3909:
3910: my @pairs=split(/\&/,$what);
3911: my $hashref = &tie_user_hash($udom, $uname, $namespace,
1.268 albertel 3912: &GDBM_WRCREAT(), "S",
1.231 foxr 3913: "$rid:$what");
3914: if ($hashref) {
3915: my $now = time;
1.512 raeburn 3916: my $numtrans;
3917: if ($laststore) {
3918: my ($previousversion,$previoustime) = split(/\=/,$laststore);
3919: my ($lastversion,$lasttime) = (0,0);
3920: $lastversion = $hashref->{"version:$rid"};
3921: if ($lastversion) {
3922: $lasttime = $hashref->{"$lastversion:$rid:timestamp"};
3923: }
3924: if (($previousversion) && ($previousversion !~ /\D/)) {
3925: if (($lastversion > $previousversion) && ($lasttime >= $previoustime)) {
3926: $numtrans = $lastversion - $previousversion;
3927: }
3928: } elsif ($lastversion) {
3929: $numtrans = $lastversion;
3930: }
3931: if ($numtrans) {
3932: $numtrans =~ s/D//g;
3933: }
3934: }
1.231 foxr 3935: $hashref->{"version:$rid"}++;
3936: my $version=$hashref->{"version:$rid"};
3937: my $allkeys='';
3938: foreach my $pair (@pairs) {
3939: my ($key,$value)=split(/=/,$pair);
3940: $allkeys.=$key.':';
3941: $hashref->{"$version:$rid:$key"}=$value;
3942: }
3943: $hashref->{"$version:$rid:timestamp"}=$now;
3944: $allkeys.='timestamp';
3945: $hashref->{"$version:keys:$rid"}=$allkeys;
1.311 albertel 3946: if (&untie_user_hash($hashref)) {
1.512 raeburn 3947: my $msg = 'ok';
3948: if ($numtrans) {
3949: $msg = 'delay:'.$numtrans;
3950: }
3951: &Reply($client, "$msg\n", $userinput);
1.231 foxr 3952: } else {
3953: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3954: "while attempting store\n", $userinput);
3955: }
3956: } else {
3957: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3958: "while attempting store\n", $userinput);
3959: }
3960: } else {
3961: &Failure($client, "refused\n", $userinput);
3962: }
3963:
3964: return 1;
3965: }
3966: ®ister_handler("store", \&store_handler, 0, 1, 0);
1.263 albertel 3967:
1.323 albertel 3968: # Modify a set of key=value pairs associated with a versioned name.
3969: #
3970: # Parameters:
3971: # $cmd - Request command keyword.
3972: # $tail - Tail of the request. This is a colon
3973: # separated list containing:
3974: # domain/user - User and authentication domain.
3975: # namespace - Name of the database being modified
3976: # rid - Resource keyword to modify.
3977: # v - Version item to modify
3978: # what - new value associated with rid.
3979: #
3980: # $client - Socket open on the client.
3981: #
3982: #
3983: # Returns:
3984: # 1 (keep on processing).
3985: # Side-Effects:
3986: # Writes to the client
3987: sub putstore_handler {
3988: my ($cmd, $tail, $client) = @_;
3989:
3990: my $userinput = "$cmd:$tail";
3991:
3992: my ($udom,$uname,$namespace,$rid,$v,$what) =split(/:/,$tail);
3993: if ($namespace ne 'roles') {
3994:
3995: chomp($what);
3996: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3997: &GDBM_WRCREAT(), "M",
3998: "$rid:$v:$what");
3999: if ($hashref) {
4000: my $now = time;
4001: my %data = &hash_extract($what);
4002: my @allkeys;
4003: while (my($key,$value) = each(%data)) {
4004: push(@allkeys,$key);
4005: $hashref->{"$v:$rid:$key"} = $value;
4006: }
4007: my $allkeys = join(':',@allkeys);
4008: $hashref->{"$v:keys:$rid"}=$allkeys;
4009:
4010: if (&untie_user_hash($hashref)) {
4011: &Reply($client, "ok\n", $userinput);
4012: } else {
4013: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4014: "while attempting store\n", $userinput);
4015: }
4016: } else {
4017: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4018: "while attempting store\n", $userinput);
4019: }
4020: } else {
4021: &Failure($client, "refused\n", $userinput);
4022: }
4023:
4024: return 1;
4025: }
4026: ®ister_handler("putstore", \&putstore_handler, 0, 1, 0);
4027:
4028: sub hash_extract {
4029: my ($str)=@_;
4030: my %hash;
4031: foreach my $pair (split(/\&/,$str)) {
4032: my ($key,$value)=split(/=/,$pair);
4033: $hash{$key}=$value;
4034: }
4035: return (%hash);
4036: }
4037: sub hash_to_str {
4038: my ($hash_ref)=@_;
4039: my $str;
4040: foreach my $key (keys(%$hash_ref)) {
4041: $str.=$key.'='.$hash_ref->{$key}.'&';
4042: }
4043: $str=~s/\&$//;
4044: return $str;
4045: }
4046:
1.231 foxr 4047: #
4048: # Dump out all versions of a resource that has key=value pairs associated
4049: # with it for each version. These resources are built up via the store
4050: # command.
4051: #
4052: # Parameters:
4053: # $cmd - Command keyword.
4054: # $tail - Remainder of the request which consists of:
4055: # domain/user - User and auth. domain.
4056: # namespace - name of resource database.
4057: # rid - Resource id.
4058: # $client - socket open on the client.
4059: #
4060: # Returns:
4061: # 1 indicating the caller should not yet exit.
4062: # Side-effects:
4063: # Writes a reply to the client.
4064: # The reply is a string of the following shape:
4065: # version=current&version:keys=k1:k2...&1:k1=v1&1:k2=v2...
4066: # Where the 1 above represents version 1.
4067: # this continues for all pairs of keys in all versions.
4068: #
4069: #
4070: #
4071: #
4072: sub restore_handler {
4073: my ($cmd, $tail, $client) = @_;
4074:
4075: my $userinput = "$cmd:$tail"; # Only used for logging purposes.
1.351 banghart 4076: my ($udom,$uname,$namespace,$rid) = split(/:/,$tail);
1.352 albertel 4077: $namespace=~s/\//\_/g;
1.350 albertel 4078: $namespace = &LONCAPA::clean_username($namespace);
1.349 albertel 4079:
1.231 foxr 4080: chomp($rid);
4081: my $qresult='';
1.309 albertel 4082: my $hashref = &tie_user_hash($udom, $uname, $namespace, &GDBM_READER());
4083: if ($hashref) {
4084: my $version=$hashref->{"version:$rid"};
1.231 foxr 4085: $qresult.="version=$version&";
4086: my $scope;
4087: for ($scope=1;$scope<=$version;$scope++) {
1.309 albertel 4088: my $vkeys=$hashref->{"$scope:keys:$rid"};
1.231 foxr 4089: my @keys=split(/:/,$vkeys);
4090: my $key;
4091: $qresult.="$scope:keys=$vkeys&";
4092: foreach $key (@keys) {
1.309 albertel 4093: $qresult.="$scope:$key=".$hashref->{"$scope:$rid:$key"}."&";
1.231 foxr 4094: }
4095: }
1.311 albertel 4096: if (&untie_user_hash($hashref)) {
1.231 foxr 4097: $qresult=~s/\&$//;
1.387 albertel 4098: &Reply( $client, \$qresult, $userinput);
1.231 foxr 4099: } else {
4100: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4101: "while attempting restore\n", $userinput);
4102: }
4103: } else {
4104: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4105: "while attempting restore\n", $userinput);
4106: }
4107:
4108: return 1;
4109:
4110:
4111: }
4112: ®ister_handler("restore", \&restore_handler, 0,1,0);
1.234 foxr 4113:
4114: #
1.324 raeburn 4115: # Add a chat message to a synchronous discussion board.
1.234 foxr 4116: #
4117: # Parameters:
4118: # $cmd - Request keyword.
4119: # $tail - Tail of the command. A colon separated list
4120: # containing:
4121: # cdom - Domain on which the chat board lives
1.324 raeburn 4122: # cnum - Course containing the chat board.
4123: # newpost - Body of the posting.
4124: # group - Optional group, if chat board is only
4125: # accessible in a group within the course
1.234 foxr 4126: # $client - Socket open on the client.
4127: # Returns:
4128: # 1 - Indicating caller should keep on processing.
4129: #
4130: # Side-effects:
4131: # writes a reply to the client.
4132: #
4133: #
4134: sub send_chat_handler {
4135: my ($cmd, $tail, $client) = @_;
4136:
4137:
4138: my $userinput = "$cmd:$tail";
4139:
1.324 raeburn 4140: my ($cdom,$cnum,$newpost,$group)=split(/\:/,$tail);
4141: &chat_add($cdom,$cnum,$newpost,$group);
1.234 foxr 4142: &Reply($client, "ok\n", $userinput);
4143:
4144: return 1;
4145: }
4146: ®ister_handler("chatsend", \&send_chat_handler, 0, 1, 0);
1.263 albertel 4147:
1.234 foxr 4148: #
1.324 raeburn 4149: # Retrieve the set of chat messages from a discussion board.
1.234 foxr 4150: #
4151: # Parameters:
4152: # $cmd - Command keyword that initiated the request.
4153: # $tail - Remainder of the request after the command
4154: # keyword. In this case a colon separated list of
4155: # chat domain - Which discussion board.
4156: # chat id - Discussion thread(?)
4157: # domain/user - Authentication domain and username
4158: # of the requesting person.
1.324 raeburn 4159: # group - Optional course group containing
4160: # the board.
1.234 foxr 4161: # $client - Socket open on the client program.
4162: # Returns:
4163: # 1 - continue processing
4164: # Side effects:
4165: # Response is written to the client.
4166: #
4167: sub retrieve_chat_handler {
4168: my ($cmd, $tail, $client) = @_;
4169:
4170:
4171: my $userinput = "$cmd:$tail";
4172:
1.324 raeburn 4173: my ($cdom,$cnum,$udom,$uname,$group)=split(/\:/,$tail);
1.234 foxr 4174: my $reply='';
1.324 raeburn 4175: foreach (&get_chat($cdom,$cnum,$udom,$uname,$group)) {
1.234 foxr 4176: $reply.=&escape($_).':';
4177: }
4178: $reply=~s/\:$//;
1.387 albertel 4179: &Reply($client, \$reply, $userinput);
1.234 foxr 4180:
4181:
4182: return 1;
4183: }
4184: ®ister_handler("chatretr", \&retrieve_chat_handler, 0, 1, 0);
4185:
4186: #
4187: # Initiate a query of an sql database. SQL query repsonses get put in
4188: # a file for later retrieval. This prevents sql query results from
4189: # bottlenecking the system. Note that with loncnew, perhaps this is
4190: # less of an issue since multiple outstanding requests can be concurrently
4191: # serviced.
4192: #
4193: # Parameters:
1.535 raeburn 4194: # $cmd - Command keyword that initiated the request.
1.234 foxr 4195: # $tail - Remainder of the command after the keyword.
4196: # For this function, this consists of a query and
4197: # 3 arguments that are self-documentingly labelled
4198: # in the original arg1, arg2, arg3.
4199: # $client - Socket open on the client.
4200: # Return:
4201: # 1 - Indicating processing should continue.
4202: # Side-effects:
4203: # a reply is written to $client.
4204: #
4205: sub send_query_handler {
4206: my ($cmd, $tail, $client) = @_;
4207:
4208: my $userinput = "$cmd:$tail";
4209:
4210: my ($query,$arg1,$arg2,$arg3)=split(/\:/,$tail);
4211: $query=~s/\n*$//g;
1.534 raeburn 4212: if (($query eq 'usersearch') || ($query eq 'instdirsearch')) {
4213: my $usersearchconf = &get_usersearch_config($currentdomainid,'directorysrch');
4214: my $earlyout;
4215: if (ref($usersearchconf) eq 'HASH') {
4216: if ($currentdomainid eq $clienthomedom) {
4217: if ($query eq 'usersearch') {
4218: if ($usersearchconf->{'lcavailable'} eq '0') {
4219: $earlyout = 1;
4220: }
4221: } else {
4222: if ($usersearchconf->{'available'} eq '0') {
4223: $earlyout = 1;
4224: }
4225: }
4226: } else {
4227: if ($query eq 'usersearch') {
4228: if ($usersearchconf->{'lclocalonly'}) {
4229: $earlyout = 1;
4230: }
4231: } else {
4232: if ($usersearchconf->{'localonly'}) {
4233: $earlyout = 1;
4234: }
4235: }
4236: }
4237: }
4238: if ($earlyout) {
4239: &Reply($client, "query_not_authorized\n");
4240: return 1;
4241: }
4242: }
1.234 foxr 4243: &Reply($client, "". &sql_reply("$clientname\&$query".
4244: "\&$arg1"."\&$arg2"."\&$arg3")."\n",
4245: $userinput);
4246:
4247: return 1;
4248: }
4249: ®ister_handler("querysend", \&send_query_handler, 0, 1, 0);
4250:
4251: #
4252: # Add a reply to an sql query. SQL queries are done asyncrhonously.
4253: # The query is submitted via a "querysend" transaction.
4254: # There it is passed on to the lonsql daemon, queued and issued to
4255: # mysql.
4256: # This transaction is invoked when the sql transaction is complete
4257: # it stores the query results in flie and indicates query completion.
4258: # presumably local software then fetches this response... I'm guessing
4259: # the sequence is: lonc does a querysend, we ask lonsql to do it.
4260: # lonsql on completion of the query interacts with the lond of our
4261: # client to do a query reply storing two files:
4262: # - id - The results of the query.
4263: # - id.end - Indicating the transaction completed.
4264: # NOTE: id is a unique id assigned to the query and querysend time.
4265: # Parameters:
4266: # $cmd - Command keyword that initiated this request.
4267: # $tail - Remainder of the tail. In this case that's a colon
4268: # separated list containing the query Id and the
4269: # results of the query.
4270: # $client - Socket open on the client.
4271: # Return:
4272: # 1 - Indicating that we should continue processing.
4273: # Side effects:
4274: # ok written to the client.
4275: #
4276: sub reply_query_handler {
4277: my ($cmd, $tail, $client) = @_;
4278:
4279:
4280: my $userinput = "$cmd:$tail";
4281:
1.339 albertel 4282: my ($id,$reply)=split(/:/,$tail);
1.234 foxr 4283: my $store;
4284: my $execdir=$perlvar{'lonDaemons'};
4285: if ($store=IO::File->new(">$execdir/tmp/$id")) {
4286: $reply=~s/\&/\n/g;
4287: print $store $reply;
4288: close $store;
4289: my $store2=IO::File->new(">$execdir/tmp/$id.end");
4290: print $store2 "done\n";
4291: close $store2;
4292: &Reply($client, "ok\n", $userinput);
4293: } else {
4294: &Failure($client, "error: ".($!+0)
4295: ." IO::File->new Failed ".
4296: "while attempting queryreply\n", $userinput);
4297: }
4298:
4299:
4300: return 1;
4301: }
4302: ®ister_handler("queryreply", \&reply_query_handler, 0, 1, 0);
4303:
4304: #
4305: # Process the courseidput request. Not quite sure what this means
4306: # at the system level sense. It appears a gdbm file in the
4307: # /home/httpd/lonUsers/$domain/nohist_courseids is tied and
4308: # a set of entries made in that database.
4309: #
4310: # Parameters:
4311: # $cmd - The command keyword that initiated this request.
4312: # $tail - Tail of the command. In this case consists of a colon
4313: # separated list contaning the domain to apply this to and
4314: # an ampersand separated list of keyword=value pairs.
1.272 raeburn 4315: # Each value is a colon separated list that includes:
4316: # description, institutional code and course owner.
4317: # For backward compatibility with versions included
4318: # in LON-CAPA 1.1.X (and earlier) and 1.2.X, institutional
4319: # code and/or course owner are preserved from the existing
4320: # record when writing a new record in response to 1.1 or
4321: # 1.2 implementations of lonnet::flushcourselogs().
4322: #
1.234 foxr 4323: # $client - Socket open on the client.
4324: # Returns:
4325: # 1 - indicating that processing should continue
4326: #
4327: # Side effects:
4328: # reply is written to the client.
4329: #
4330: sub put_course_id_handler {
4331: my ($cmd, $tail, $client) = @_;
4332:
4333:
4334: my $userinput = "$cmd:$tail";
4335:
1.266 raeburn 4336: my ($udom, $what) = split(/:/, $tail,2);
1.234 foxr 4337: chomp($what);
4338: my $now=time;
4339: my @pairs=split(/\&/,$what);
4340:
4341: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
4342: if ($hashref) {
4343: foreach my $pair (@pairs) {
1.271 raeburn 4344: my ($key,$courseinfo) = split(/=/,$pair,2);
4345: $courseinfo =~ s/=/:/g;
1.384 raeburn 4346: if (defined($hashref->{$key})) {
4347: my $value = &Apache::lonnet::thaw_unescape($hashref->{$key});
4348: if (ref($value) eq 'HASH') {
4349: my @items = ('description','inst_code','owner','type');
4350: my @new_items = split(/:/,$courseinfo,-1);
4351: my %storehash;
4352: for (my $i=0; $i<@new_items; $i++) {
1.391 raeburn 4353: $storehash{$items[$i]} = &unescape($new_items[$i]);
1.384 raeburn 4354: }
4355: $hashref->{$key} =
4356: &Apache::lonnet::freeze_escape(\%storehash);
4357: my $unesc_key = &unescape($key);
4358: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
4359: next;
1.383 raeburn 4360: }
1.384 raeburn 4361: }
4362: my @current_items = split(/:/,$hashref->{$key},-1);
4363: shift(@current_items); # remove description
4364: pop(@current_items); # remove last access
4365: my $numcurrent = scalar(@current_items);
4366: if ($numcurrent > 3) {
4367: $numcurrent = 3;
4368: }
4369: my @new_items = split(/:/,$courseinfo,-1);
4370: my $numnew = scalar(@new_items);
4371: if ($numcurrent > 0) {
4372: if ($numnew <= $numcurrent) { # flushcourselogs() from pre 2.2
4373: for (my $j=$numcurrent-$numnew; $j>=0; $j--) {
4374: $courseinfo .= ':'.$current_items[$numcurrent-$j-1];
1.333 raeburn 4375: }
1.272 raeburn 4376: }
4377: }
1.384 raeburn 4378: $hashref->{$key}=$courseinfo.':'.$now;
1.234 foxr 4379: }
1.311 albertel 4380: if (&untie_domain_hash($hashref)) {
1.253 foxr 4381: &Reply( $client, "ok\n", $userinput);
1.234 foxr 4382: } else {
1.253 foxr 4383: &Failure($client, "error: ".($!+0)
1.234 foxr 4384: ." untie(GDBM) Failed ".
4385: "while attempting courseidput\n", $userinput);
4386: }
4387: } else {
1.253 foxr 4388: &Failure($client, "error: ".($!+0)
1.234 foxr 4389: ." tie(GDBM) Failed ".
4390: "while attempting courseidput\n", $userinput);
4391: }
4392:
4393: return 1;
4394: }
4395: ®ister_handler("courseidput", \&put_course_id_handler, 0, 1, 0);
4396:
1.383 raeburn 4397: sub put_course_id_hash_handler {
4398: my ($cmd, $tail, $client) = @_;
4399: my $userinput = "$cmd:$tail";
1.384 raeburn 4400: my ($udom,$mode,$what) = split(/:/, $tail,3);
1.383 raeburn 4401: chomp($what);
4402: my $now=time;
4403: my @pairs=split(/\&/,$what);
1.384 raeburn 4404: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
1.383 raeburn 4405: if ($hashref) {
4406: foreach my $pair (@pairs) {
4407: my ($key,$value)=split(/=/,$pair);
1.384 raeburn 4408: my $unesc_key = &unescape($key);
4409: if ($mode ne 'timeonly') {
4410: if (!defined($hashref->{&escape('lasttime:'.$unesc_key)})) {
4411: my $curritems = &Apache::lonnet::thaw_unescape($key);
4412: if (ref($curritems) ne 'HASH') {
4413: my @current_items = split(/:/,$hashref->{$key},-1);
4414: my $lasttime = pop(@current_items);
4415: $hashref->{&escape('lasttime:'.$unesc_key)} = $lasttime;
4416: } else {
4417: $hashref->{&escape('lasttime:'.$unesc_key)} = '';
4418: }
4419: }
4420: $hashref->{$key} = $value;
4421: }
4422: if ($mode ne 'notime') {
4423: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
4424: }
1.383 raeburn 4425: }
4426: if (&untie_domain_hash($hashref)) {
4427: &Reply($client, "ok\n", $userinput);
4428: } else {
4429: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4430: "while attempting courseidputhash\n", $userinput);
4431: }
4432: } else {
4433: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4434: "while attempting courseidputhash\n", $userinput);
4435: }
4436: return 1;
4437: }
4438: ®ister_handler("courseidputhash", \&put_course_id_hash_handler, 0, 1, 0);
4439:
1.234 foxr 4440: # Retrieves the value of a course id resource keyword pattern
4441: # defined since a starting date. Both the starting date and the
4442: # keyword pattern are optional. If the starting date is not supplied it
4443: # is treated as the beginning of time. If the pattern is not found,
4444: # it is treatred as "." matching everything.
4445: #
4446: # Parameters:
4447: # $cmd - Command keyword that resulted in us being dispatched.
4448: # $tail - The remainder of the command that, in this case, consists
4449: # of a colon separated list of:
4450: # domain - The domain in which the course database is
4451: # defined.
4452: # since - Optional parameter describing the minimum
4453: # time of definition(?) of the resources that
4454: # will match the dump.
4455: # description - regular expression that is used to filter
4456: # the dump. Only keywords matching this regexp
4457: # will be used.
1.272 raeburn 4458: # institutional code - optional supplied code to filter
4459: # the dump. Only courses with an institutional code
4460: # that match the supplied code will be returned.
1.336 raeburn 4461: # owner - optional supplied username and domain of owner to
4462: # filter the dump. Only courses for which the course
4463: # owner matches the supplied username and/or domain
4464: # will be returned. Pre-2.2.0 legacy entries from
4465: # nohist_courseiddump will only contain usernames.
1.384 raeburn 4466: # type - optional parameter for selection
1.418 raeburn 4467: # regexp_ok - if 1 or -1 allow the supplied institutional code
4468: # filter to behave as a regular expression:
4469: # 1 will not exclude the course if the instcode matches the RE
4470: # -1 will exclude the course if the instcode matches the RE
1.384 raeburn 4471: # rtn_as_hash - whether to return the information available for
4472: # each matched item as a frozen hash of all
4473: # key, value pairs in the item's hash, or as a
4474: # colon-separated list of (in order) description,
4475: # institutional code, and course owner.
1.404 raeburn 4476: # selfenrollonly - filter by courses allowing self-enrollment
4477: # now or in the future (selfenrollonly = 1).
4478: # catfilter - filter by course category, assigned to a course
4479: # using manually defined categories (i.e., not
1.407 raeburn 4480: # self-cataloging based on on institutional code).
1.404 raeburn 4481: # showhidden - include course in results even if course
1.407 raeburn 4482: # was set to be excluded from course catalog (DC only).
1.404 raeburn 4483: # caller - if set to 'coursecatalog', courses set to be hidden
4484: # from course catalog will be excluded from results (unless
4485: # overridden by "showhidden".
1.427 raeburn 4486: # cloner - escaped username:domain of course cloner (if picking course to
1.419 raeburn 4487: # clone).
4488: # cc_clone_list - escaped comma separated list of courses for which
4489: # course cloner has active CC role (and so can clone
4490: # automatically).
1.427 raeburn 4491: # cloneonly - filter by courses for which cloner has rights to clone.
4492: # createdbefore - include courses for which creation date preceeded this date.
4493: # createdafter - include courses for which creation date followed this date.
4494: # creationcontext - include courses created in specified context
1.404 raeburn 4495: #
1.445 raeburn 4496: # domcloner - flag to indicate if user can create CCs in course's domain.
1.505 raeburn 4497: # If so, ability to clone course is automatic.
4498: # hasuniquecode - filter by courses for which a six character unique code has
4499: # been set.
1.445 raeburn 4500: #
1.234 foxr 4501: # $client - The socket open on the client.
4502: # Returns:
4503: # 1 - Continue processing.
4504: # Side Effects:
4505: # a reply is written to $client.
4506: sub dump_course_id_handler {
4507: my ($cmd, $tail, $client) = @_;
1.494 droeschl 4508:
4509: my $res = LONCAPA::Lond::dump_course_id_handler($tail);
4510: if ($res =~ /^error:/) {
4511: Failure($client, \$res, "$cmd:$tail");
4512: } else {
4513: Reply($client, \$res, "$cmd:$tail");
4514: }
4515:
4516: return 1;
4517:
4518: #TODO remove
1.234 foxr 4519: my $userinput = "$cmd:$tail";
4520:
1.333 raeburn 4521: my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter,
1.404 raeburn 4522: $typefilter,$regexp_ok,$rtn_as_hash,$selfenrollonly,$catfilter,$showhidden,
1.427 raeburn 4523: $caller,$cloner,$cc_clone_list,$cloneonly,$createdbefore,$createdafter,
1.505 raeburn 4524: $creationcontext,$domcloner,$hasuniquecode) =split(/:/,$tail);
1.397 raeburn 4525: my $now = time;
1.419 raeburn 4526: my ($cloneruname,$clonerudom,%cc_clone);
1.234 foxr 4527: if (defined($description)) {
4528: $description=&unescape($description);
4529: } else {
4530: $description='.';
4531: }
1.266 raeburn 4532: if (defined($instcodefilter)) {
4533: $instcodefilter=&unescape($instcodefilter);
4534: } else {
4535: $instcodefilter='.';
4536: }
1.336 raeburn 4537: my ($ownerunamefilter,$ownerdomfilter);
1.266 raeburn 4538: if (defined($ownerfilter)) {
4539: $ownerfilter=&unescape($ownerfilter);
1.336 raeburn 4540: if ($ownerfilter ne '.' && defined($ownerfilter)) {
4541: if ($ownerfilter =~ /^([^:]*):([^:]*)$/) {
4542: $ownerunamefilter = $1;
4543: $ownerdomfilter = $2;
4544: } else {
4545: $ownerunamefilter = $ownerfilter;
4546: $ownerdomfilter = '';
4547: }
4548: }
1.266 raeburn 4549: } else {
4550: $ownerfilter='.';
4551: }
1.336 raeburn 4552:
1.282 raeburn 4553: if (defined($coursefilter)) {
4554: $coursefilter=&unescape($coursefilter);
4555: } else {
4556: $coursefilter='.';
4557: }
1.333 raeburn 4558: if (defined($typefilter)) {
4559: $typefilter=&unescape($typefilter);
4560: } else {
4561: $typefilter='.';
4562: }
1.344 raeburn 4563: if (defined($regexp_ok)) {
4564: $regexp_ok=&unescape($regexp_ok);
4565: }
1.401 raeburn 4566: if (defined($catfilter)) {
4567: $catfilter=&unescape($catfilter);
4568: }
1.419 raeburn 4569: if (defined($cloner)) {
4570: $cloner = &unescape($cloner);
4571: ($cloneruname,$clonerudom) = ($cloner =~ /^($LONCAPA::match_username):($LONCAPA::match_domain)$/);
4572: }
4573: if (defined($cc_clone_list)) {
4574: $cc_clone_list = &unescape($cc_clone_list);
4575: my @cc_cloners = split('&',$cc_clone_list);
4576: foreach my $cid (@cc_cloners) {
4577: my ($clonedom,$clonenum) = split(':',$cid);
4578: next if ($clonedom ne $udom);
4579: $cc_clone{$clonedom.'_'.$clonenum} = 1;
4580: }
4581: }
1.431 raeburn 4582: if ($createdbefore ne '') {
1.427 raeburn 4583: $createdbefore = &unescape($createdbefore);
4584: } else {
4585: $createdbefore = 0;
4586: }
1.431 raeburn 4587: if ($createdafter ne '') {
1.427 raeburn 4588: $createdafter = &unescape($createdafter);
4589: } else {
4590: $createdafter = 0;
4591: }
1.431 raeburn 4592: if ($creationcontext ne '') {
1.427 raeburn 4593: $creationcontext = &unescape($creationcontext);
4594: } else {
4595: $creationcontext = '.';
4596: }
1.505 raeburn 4597: unless ($hasuniquecode) {
4598: $hasuniquecode = '.';
4599: }
1.384 raeburn 4600: my $unpack = 1;
1.485 raeburn 4601: if ($description eq '.' && $instcodefilter eq '.' && $ownerfilter eq '.' &&
1.384 raeburn 4602: $typefilter eq '.') {
4603: $unpack = 0;
4604: }
4605: if (!defined($since)) { $since=0; }
1.234 foxr 4606: my $qresult='';
4607: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
4608: if ($hashref) {
1.384 raeburn 4609: while (my ($key,$value) = each(%$hashref)) {
1.397 raeburn 4610: my ($unesc_key,$lasttime_key,$lasttime,$is_hash,%val,
1.427 raeburn 4611: %unesc_val,$selfenroll_end,$selfenroll_types,$created,
4612: $context);
1.384 raeburn 4613: $unesc_key = &unescape($key);
4614: if ($unesc_key =~ /^lasttime:/) {
4615: next;
4616: } else {
4617: $lasttime_key = &escape('lasttime:'.$unesc_key);
4618: }
4619: if ($hashref->{$lasttime_key} ne '') {
4620: $lasttime = $hashref->{$lasttime_key};
4621: next if ($lasttime<$since);
4622: }
1.419 raeburn 4623: my ($canclone,$valchange);
1.384 raeburn 4624: my $items = &Apache::lonnet::thaw_unescape($value);
4625: if (ref($items) eq 'HASH') {
1.429 raeburn 4626: if ($hashref->{$lasttime_key} eq '') {
1.430 raeburn 4627: next if ($since > 1);
1.429 raeburn 4628: }
1.384 raeburn 4629: $is_hash = 1;
1.445 raeburn 4630: if ($domcloner) {
4631: $canclone = 1;
4632: } elsif (defined($clonerudom)) {
1.419 raeburn 4633: if ($items->{'cloners'}) {
4634: my @cloneable = split(',',$items->{'cloners'});
4635: if (@cloneable) {
4636: if (grep(/^\*$/,@cloneable)) {
4637: $canclone = 1;
4638: } elsif (grep(/^\*:\Q$clonerudom\E$/,@cloneable)) {
4639: $canclone = 1;
4640: } elsif (grep(/^\Q$cloneruname\E:\Q$clonerudom\E$/,@cloneable)) {
4641: $canclone = 1;
4642: }
4643: }
4644: unless ($canclone) {
4645: if ($cloneruname ne '' && $clonerudom ne '') {
4646: if ($cc_clone{$unesc_key}) {
4647: $canclone = 1;
4648: $items->{'cloners'} .= ','.$cloneruname.':'.
4649: $clonerudom;
4650: $valchange = 1;
4651: }
4652: }
4653: }
4654: } elsif (defined($cloneruname)) {
4655: if ($cc_clone{$unesc_key}) {
4656: $canclone = 1;
4657: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
4658: $valchange = 1;
4659: }
1.437 raeburn 4660: unless ($canclone) {
4661: if ($items->{'owner'} =~ /:/) {
4662: if ($items->{'owner'} eq $cloner) {
4663: $canclone = 1;
4664: }
1.444 raeburn 4665: } elsif ($cloner eq $items->{'owner'}.':'.$udom) {
1.437 raeburn 4666: $canclone = 1;
4667: }
4668: if ($canclone) {
4669: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
4670: $valchange = 1;
4671: }
4672: }
1.419 raeburn 4673: }
4674: }
1.384 raeburn 4675: if ($unpack || !$rtn_as_hash) {
4676: $unesc_val{'descr'} = $items->{'description'};
4677: $unesc_val{'inst_code'} = $items->{'inst_code'};
4678: $unesc_val{'owner'} = $items->{'owner'};
4679: $unesc_val{'type'} = $items->{'type'};
1.419 raeburn 4680: $unesc_val{'cloners'} = $items->{'cloners'};
1.427 raeburn 4681: $unesc_val{'created'} = $items->{'created'};
4682: $unesc_val{'context'} = $items->{'context'};
1.404 raeburn 4683: }
4684: $selfenroll_types = $items->{'selfenroll_types'};
4685: $selfenroll_end = $items->{'selfenroll_end_date'};
1.427 raeburn 4686: $created = $items->{'created'};
4687: $context = $items->{'context'};
1.505 raeburn 4688: if ($hasuniquecode ne '.') {
4689: next unless ($items->{'uniquecode'});
4690: }
1.404 raeburn 4691: if ($selfenrollonly) {
4692: next if (!$selfenroll_types);
4693: if (($selfenroll_end > 0) && ($selfenroll_end <= $now)) {
4694: next;
1.397 raeburn 4695: }
1.404 raeburn 4696: }
1.427 raeburn 4697: if ($creationcontext ne '.') {
4698: next if (($context ne '') && ($context ne $creationcontext));
4699: }
4700: if ($createdbefore > 0) {
4701: next if (($created eq '') || ($created > $createdbefore));
4702: }
4703: if ($createdafter > 0) {
4704: next if (($created eq '') || ($created <= $createdafter));
4705: }
1.404 raeburn 4706: if ($catfilter ne '') {
1.406 raeburn 4707: next if ($items->{'categories'} eq '');
4708: my @categories = split('&',$items->{'categories'});
1.407 raeburn 4709: next if (@categories == 0);
4710: my @subcats = split('&',$catfilter);
4711: my $matchcat = 0;
4712: foreach my $cat (@categories) {
4713: if (grep(/^\Q$cat\E$/,@subcats)) {
4714: $matchcat = 1;
4715: last;
4716: }
4717: }
4718: next if (!$matchcat);
1.404 raeburn 4719: }
4720: if ($caller eq 'coursecatalog') {
1.405 raeburn 4721: if ($items->{'hidefromcat'} eq 'yes') {
4722: next if !$showhidden;
1.401 raeburn 4723: }
1.384 raeburn 4724: }
1.383 raeburn 4725: } else {
1.401 raeburn 4726: next if ($catfilter ne '');
1.419 raeburn 4727: next if ($selfenrollonly);
1.427 raeburn 4728: next if ($createdbefore || $createdafter);
4729: next if ($creationcontext ne '.');
1.419 raeburn 4730: if ((defined($clonerudom)) && (defined($cloneruname))) {
4731: if ($cc_clone{$unesc_key}) {
4732: $canclone = 1;
4733: $val{'cloners'} = &escape($cloneruname.':'.$clonerudom);
4734: }
4735: }
1.384 raeburn 4736: $is_hash = 0;
1.388 raeburn 4737: my @courseitems = split(/:/,$value);
1.403 raeburn 4738: $lasttime = pop(@courseitems);
1.402 raeburn 4739: if ($hashref->{$lasttime_key} eq '') {
4740: next if ($lasttime<$since);
4741: }
1.384 raeburn 4742: ($val{'descr'},$val{'inst_code'},$val{'owner'},$val{'type'}) = @courseitems;
1.383 raeburn 4743: }
1.419 raeburn 4744: if ($cloneonly) {
4745: next unless ($canclone);
4746: }
1.266 raeburn 4747: my $match = 1;
1.384 raeburn 4748: if ($description ne '.') {
4749: if (!$is_hash) {
4750: $unesc_val{'descr'} = &unescape($val{'descr'});
4751: }
4752: if (eval{$unesc_val{'descr'} !~ /\Q$description\E/i}) {
1.266 raeburn 4753: $match = 0;
1.384 raeburn 4754: }
1.266 raeburn 4755: }
1.384 raeburn 4756: if ($instcodefilter ne '.') {
4757: if (!$is_hash) {
4758: $unesc_val{'inst_code'} = &unescape($val{'inst_code'});
4759: }
1.418 raeburn 4760: if ($regexp_ok == 1) {
1.384 raeburn 4761: if (eval{$unesc_val{'inst_code'} !~ /$instcodefilter/}) {
1.344 raeburn 4762: $match = 0;
4763: }
1.418 raeburn 4764: } elsif ($regexp_ok == -1) {
4765: if (eval{$unesc_val{'inst_code'} =~ /$instcodefilter/}) {
4766: $match = 0;
4767: }
1.344 raeburn 4768: } else {
1.384 raeburn 4769: if (eval{$unesc_val{'inst_code'} !~ /\Q$instcodefilter\E/i}) {
1.344 raeburn 4770: $match = 0;
4771: }
1.266 raeburn 4772: }
1.234 foxr 4773: }
1.384 raeburn 4774: if ($ownerfilter ne '.') {
4775: if (!$is_hash) {
4776: $unesc_val{'owner'} = &unescape($val{'owner'});
4777: }
1.336 raeburn 4778: if (($ownerunamefilter ne '') && ($ownerdomfilter ne '')) {
1.384 raeburn 4779: if ($unesc_val{'owner'} =~ /:/) {
4780: if (eval{$unesc_val{'owner'} !~
4781: /\Q$ownerunamefilter\E:\Q$ownerdomfilter\E$/i}) {
1.336 raeburn 4782: $match = 0;
4783: }
4784: } else {
1.384 raeburn 4785: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4786: $match = 0;
4787: }
4788: }
4789: } elsif ($ownerunamefilter ne '') {
1.384 raeburn 4790: if ($unesc_val{'owner'} =~ /:/) {
4791: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E:[^:]+$/i}) {
1.336 raeburn 4792: $match = 0;
4793: }
4794: } else {
1.384 raeburn 4795: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4796: $match = 0;
4797: }
4798: }
4799: } elsif ($ownerdomfilter ne '') {
1.384 raeburn 4800: if ($unesc_val{'owner'} =~ /:/) {
4801: if (eval{$unesc_val{'owner'} !~ /^[^:]+:\Q$ownerdomfilter\E/}) {
1.336 raeburn 4802: $match = 0;
4803: }
4804: } else {
4805: if ($ownerdomfilter ne $udom) {
4806: $match = 0;
4807: }
4808: }
1.266 raeburn 4809: }
4810: }
1.384 raeburn 4811: if ($coursefilter ne '.') {
4812: if (eval{$unesc_key !~ /^$udom(_)\Q$coursefilter\E$/}) {
1.282 raeburn 4813: $match = 0;
4814: }
4815: }
1.384 raeburn 4816: if ($typefilter ne '.') {
4817: if (!$is_hash) {
4818: $unesc_val{'type'} = &unescape($val{'type'});
4819: }
4820: if ($unesc_val{'type'} eq '') {
1.333 raeburn 4821: if ($typefilter ne 'Course') {
4822: $match = 0;
4823: }
1.383 raeburn 4824: } else {
1.384 raeburn 4825: if (eval{$unesc_val{'type'} !~ /^\Q$typefilter\E$/}) {
1.333 raeburn 4826: $match = 0;
4827: }
4828: }
4829: }
1.266 raeburn 4830: if ($match == 1) {
1.384 raeburn 4831: if ($rtn_as_hash) {
4832: if ($is_hash) {
1.419 raeburn 4833: if ($valchange) {
4834: my $newvalue = &Apache::lonnet::freeze_escape($items);
4835: $qresult.=$key.'='.$newvalue.'&';
4836: } else {
4837: $qresult.=$key.'='.$value.'&';
4838: }
1.384 raeburn 4839: } else {
1.388 raeburn 4840: my %rtnhash = ( 'description' => &unescape($val{'descr'}),
4841: 'inst_code' => &unescape($val{'inst_code'}),
4842: 'owner' => &unescape($val{'owner'}),
4843: 'type' => &unescape($val{'type'}),
1.419 raeburn 4844: 'cloners' => &unescape($val{'cloners'}),
1.384 raeburn 4845: );
4846: my $items = &Apache::lonnet::freeze_escape(\%rtnhash);
4847: $qresult.=$key.'='.$items.'&';
4848: }
1.383 raeburn 4849: } else {
1.384 raeburn 4850: if ($is_hash) {
4851: $qresult .= $key.'='.&escape($unesc_val{'descr'}).':'.
4852: &escape($unesc_val{'inst_code'}).':'.
4853: &escape($unesc_val{'owner'}).'&';
4854: } else {
4855: $qresult .= $key.'='.$val{'descr'}.':'.$val{'inst_code'}.
4856: ':'.$val{'owner'}.'&';
4857: }
1.383 raeburn 4858: }
1.266 raeburn 4859: }
1.234 foxr 4860: }
1.311 albertel 4861: if (&untie_domain_hash($hashref)) {
1.234 foxr 4862: chop($qresult);
1.387 albertel 4863: &Reply($client, \$qresult, $userinput);
1.234 foxr 4864: } else {
4865: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4866: "while attempting courseiddump\n", $userinput);
4867: }
4868: } else {
4869: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4870: "while attempting courseiddump\n", $userinput);
4871: }
4872: return 1;
4873: }
4874: ®ister_handler("courseiddump", \&dump_course_id_handler, 0, 1, 0);
1.238 foxr 4875:
1.438 raeburn 4876: sub course_lastaccess_handler {
4877: my ($cmd, $tail, $client) = @_;
4878: my $userinput = "$cmd:$tail";
4879: my ($cdom,$cnum) = split(':',$tail);
4880: my (%lastaccess,$qresult);
4881: my $hashref = &tie_domain_hash($cdom, "nohist_courseids", &GDBM_WRCREAT());
4882: if ($hashref) {
4883: while (my ($key,$value) = each(%$hashref)) {
4884: my ($unesc_key,$lasttime);
4885: $unesc_key = &unescape($key);
4886: if ($cnum) {
4887: next unless ($unesc_key =~ /\Q$cdom\E_\Q$cnum\E$/);
4888: }
4889: if ($unesc_key =~ /^lasttime:($LONCAPA::match_domain\_$LONCAPA::match_courseid)/) {
4890: $lastaccess{$1} = $value;
4891: } else {
4892: my $items = &Apache::lonnet::thaw_unescape($value);
4893: if (ref($items) eq 'HASH') {
4894: unless ($lastaccess{$unesc_key}) {
4895: $lastaccess{$unesc_key} = '';
4896: }
4897: } else {
4898: my @courseitems = split(':',$value);
4899: $lastaccess{$unesc_key} = pop(@courseitems);
4900: }
4901: }
4902: }
4903: foreach my $cid (sort(keys(%lastaccess))) {
4904: $qresult.=&escape($cid).'='.$lastaccess{$cid}.'&';
4905: }
4906: if (&untie_domain_hash($hashref)) {
4907: if ($qresult) {
4908: chop($qresult);
4909: }
4910: &Reply($client, \$qresult, $userinput);
4911: } else {
4912: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4913: "while attempting lastacourseaccess\n", $userinput);
4914: }
4915: } else {
4916: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4917: "while attempting lastcourseaccess\n", $userinput);
4918: }
4919: return 1;
4920: }
4921: ®ister_handler("courselastaccess",\&course_lastaccess_handler, 0, 1, 0);
4922:
1.561 raeburn 4923: sub course_sessions_handler {
4924: my ($cmd, $tail, $client) = @_;
4925: my $userinput = "$cmd:$tail";
4926: my ($cdom,$cnum,$lastactivity) = split(':',$tail);
4927: my $dbsuffix = '_'.$cdom.'_'.$cnum.'.db';
4928: my (%sessions,$qresult);
4929: my $now=time;
4930: if (opendir(DIR,$perlvar{'lonIDsDir'})) {
4931: my $filename;
4932: while ($filename=readdir(DIR)) {
4933: next if ($filename=~/^\./);
4934: next if ($filename=~/^publicuser_/);
4935: next if ($filename=~/^[a-f0-9]+_(linked|lti_\d+)\.id$/);
1.562 raeburn 4936: if ($filename =~ /^($LONCAPA::match_username)_\d+_($LONCAPA::match_domain)_/) {
1.561 raeburn 4937: my ($uname,$udom) = ($1,$2);
1.562 raeburn 4938: next unless (-e "$perlvar{'lonDaemons'}/tmp/$uname$dbsuffix");
1.561 raeburn 4939: my $mtime = (stat("$perlvar{'lonIDsDir'}/$filename"))[9];
4940: if ($lastactivity < 0) {
1.563 raeburn 4941: next if ($mtime-$now > $lastactivity);
1.561 raeburn 4942: } else {
1.563 raeburn 4943: next if ($now-$mtime > $lastactivity);
1.561 raeburn 4944: }
4945: $sessions{$uname.':'.$udom} = $mtime;
4946: }
4947: }
4948: closedir(DIR);
4949: }
4950: foreach my $user (keys(%sessions)) {
4951: $qresult.=&escape($user).'='.$sessions{$user}.'&';
4952: }
4953: if ($qresult) {
4954: chop($qresult);
4955: }
4956: &Reply($client, \$qresult, $userinput);
4957: return 1;
4958: }
4959: ®ister_handler("coursesessions",\&course_sessions_handler, 0, 1, 0);
4960:
1.238 foxr 4961: #
1.348 raeburn 4962: # Puts an unencrypted entry in a namespace db file at the domain level
4963: #
4964: # Parameters:
4965: # $cmd - The command that got us here.
4966: # $tail - Tail of the command (remaining parameters).
4967: # $client - File descriptor connected to client.
4968: # Returns
4969: # 0 - Requested to exit, caller should shut down.
4970: # 1 - Continue processing.
4971: # Side effects:
4972: # reply is written to $client.
4973: #
4974: sub put_domain_handler {
4975: my ($cmd,$tail,$client) = @_;
4976:
4977: my $userinput = "$cmd:$tail";
4978:
4979: my ($udom,$namespace,$what) =split(/:/,$tail,3);
4980: chomp($what);
4981: my @pairs=split(/\&/,$what);
4982: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_WRCREAT(),
4983: "P", $what);
4984: if ($hashref) {
4985: foreach my $pair (@pairs) {
4986: my ($key,$value)=split(/=/,$pair);
4987: $hashref->{$key}=$value;
4988: }
4989: if (&untie_domain_hash($hashref)) {
4990: &Reply($client, "ok\n", $userinput);
4991: } else {
4992: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4993: "while attempting putdom\n", $userinput);
4994: }
4995: } else {
4996: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4997: "while attempting putdom\n", $userinput);
4998: }
4999:
5000: return 1;
5001: }
5002: ®ister_handler("putdom", \&put_domain_handler, 0, 1, 0);
5003:
1.517 raeburn 5004: # Updates one or more entries in clickers.db file at the domain level
5005: #
5006: # Parameters:
5007: # $cmd - The command that got us here.
5008: # $tail - Tail of the command (remaining parameters).
5009: # In this case a colon separated list containing:
5010: # (a) the domain for which we are updating the entries,
5011: # (b) the action required -- add or del -- and
5012: # (c) a &-separated list of entries to add or delete.
5013: # $client - File descriptor connected to client.
5014: # Returns
5015: # 1 - Continue processing.
5016: # 0 - Requested to exit, caller should shut down.
5017: # Side effects:
5018: # reply is written to $client.
5019: #
5020:
5021:
5022: sub update_clickers {
5023: my ($cmd, $tail, $client) = @_;
5024:
5025: my $userinput = "$cmd:$tail";
5026: my ($udom,$action,$what) =split(/:/,$tail,3);
5027: chomp($what);
5028:
5029: my $hashref = &tie_domain_hash($udom, "clickers", &GDBM_WRCREAT(),
5030: "U","$action:$what");
5031:
5032: if (!$hashref) {
5033: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5034: "while attempting updateclickers\n", $userinput);
5035: return 1;
5036: }
5037:
5038: my @pairs=split(/\&/,$what);
5039: foreach my $pair (@pairs) {
5040: my ($key,$value)=split(/=/,$pair);
5041: if ($action eq 'add') {
5042: if (exists($hashref->{$key})) {
5043: my @newvals = split(/,/,&unescape($value));
5044: my @currvals = split(/,/,&unescape($hashref->{$key}));
5045: my @merged = sort(keys(%{{map { $_ => 1 } (@newvals,@currvals)}}));
5046: $hashref->{$key}=&escape(join(',',@merged));
5047: } else {
5048: $hashref->{$key}=$value;
5049: }
5050: } elsif ($action eq 'del') {
5051: if (exists($hashref->{$key})) {
5052: my %current;
5053: map { $current{$_} = 1; } split(/,/,&unescape($hashref->{$key}));
5054: map { delete($current{$_}); } split(/,/,&unescape($value));
5055: if (keys(%current)) {
5056: $hashref->{$key}=&escape(join(',',sort(keys(%current))));
5057: } else {
5058: delete($hashref->{$key});
5059: }
5060: }
5061: }
5062: }
5063: if (&untie_user_hash($hashref)) {
5064: &Reply( $client, "ok\n", $userinput);
5065: } else {
5066: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
5067: "while attempting put\n",
5068: $userinput);
5069: }
5070: return 1;
5071: }
5072: ®ister_handler("updateclickers", \&update_clickers, 0, 1, 0);
5073:
5074:
5075: # Deletes one or more entries in a namespace db file at the domain level
5076: #
5077: # Parameters:
5078: # $cmd - The command that got us here.
5079: # $tail - Tail of the command (remaining parameters).
5080: # In this case a colon separated list containing:
5081: # (a) the domain for which we are deleting the entries,
5082: # (b) &-separated list of keys to delete.
5083: # $client - File descriptor connected to client.
5084: # Returns
5085: # 1 - Continue processing.
5086: # 0 - Requested to exit, caller should shut down.
5087: # Side effects:
5088: # reply is written to $client.
5089: #
5090:
5091: sub del_domain_handler {
5092: my ($cmd,$tail,$client) = @_;
5093:
5094: my $userinput = "$cmd:$tail";
5095:
5096: my ($udom,$namespace,$what)=split(/:/,$tail,3);
5097: chomp($what);
5098: my $hashref = &tie_domain_hash($udom,$namespace,&GDBM_WRCREAT(),
5099: "D", $what);
5100: if ($hashref) {
5101: my @keys=split(/\&/,$what);
5102: foreach my $key (@keys) {
5103: delete($hashref->{$key});
5104: }
5105: if (&untie_user_hash($hashref)) {
5106: &Reply($client, "ok\n", $userinput);
5107: } else {
5108: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5109: "while attempting deldom\n", $userinput);
5110: }
5111: } else {
5112: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5113: "while attempting deldom\n", $userinput);
5114: }
5115: return 1;
5116: }
5117: ®ister_handler("deldom", \&del_domain_handler, 0, 1, 0);
5118:
5119:
1.348 raeburn 5120: # Unencrypted get from the namespace database file at the domain level.
5121: # This function retrieves a keyed item from a specific named database in the
5122: # domain directory.
5123: #
5124: # Parameters:
1.565 raeburn 5125: # $cmd - Command request keyword (getdom).
1.348 raeburn 5126: # $tail - Tail of the command. This is a colon separated list
5127: # consisting of the domain and the 'namespace'
5128: # which selects the gdbm file to do the lookup in,
5129: # & separated list of keys to lookup. Note that
5130: # the values are returned as an & separated list too.
5131: # $client - File descriptor open on the client.
5132: # Returns:
5133: # 1 - Continue processing.
5134: # 0 - Exit.
5135: # Side effects:
5136: # reply is written to $client.
5137: #
5138:
5139: sub get_domain_handler {
5140: my ($cmd, $tail, $client) = @_;
5141:
1.536 raeburn 5142: my $userinput = "$cmd:$tail";
5143:
5144: my ($udom,$namespace,$what)=split(/:/,$tail,3);
5145: if ($namespace =~ /^enc/) {
5146: &Failure( $client, "refused\n", $userinput);
5147: } else {
1.565 raeburn 5148: my $res = LONCAPA::Lond::get_dom($userinput);
5149: if ($res =~ /^error:/) {
5150: &Failure($client, \$res, $userinput);
1.536 raeburn 5151: } else {
1.565 raeburn 5152: &Reply($client, \$res, $userinput);
1.536 raeburn 5153: }
5154: }
5155:
5156: return 1;
5157: }
5158: ®ister_handler("getdom", \&get_domain_handler, 0, 1, 0);
5159:
1.572 ! raeburn 5160: #
! 5161: # Encrypted get from the namespace database file at the domain level.
! 5162: # This function retrieves a keyed item from a specific named database in the
! 5163: # domain directory.
! 5164: #
! 5165: # Parameters:
! 5166: # $cmd - Command request keyword (egetdom).
! 5167: # $tail - Tail of the command. This is a colon separated list
! 5168: # consisting of the domain and the 'namespace'
! 5169: # which selects the gdbm file to do the lookup in,
! 5170: # & separated list of keys to lookup. Note that
! 5171: # the values are returned as an & separated list too.
! 5172: # $client - File descriptor open on the client.
! 5173: # Returns:
! 5174: # 1 - Continue processing.
! 5175: # 0 - Exit.
! 5176: # Side effects:
! 5177: # reply is encrypted before being written to $client.
! 5178: #
1.536 raeburn 5179: sub encrypted_get_domain_handler {
5180: my ($cmd, $tail, $client) = @_;
5181:
5182: my $userinput = "$cmd:$tail";
1.348 raeburn 5183:
1.565 raeburn 5184: my $res = LONCAPA::Lond::get_dom($userinput);
5185: if ($res =~ /^error:/) {
5186: &Failure($client, \$res, $userinput);
5187: } else {
5188: if ($cipher) {
5189: my $cmdlength=length($res);
5190: $res.=" ";
5191: my $encres='';
5192: for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
5193: $encres.= unpack("H16",
5194: $cipher->encrypt(substr($res,
5195: $encidx,
5196: 8)));
1.536 raeburn 5197: }
1.565 raeburn 5198: &Reply( $client,"enc:$cmdlength:$encres\n",$userinput);
1.348 raeburn 5199: } else {
1.565 raeburn 5200: &Failure( $client, "error:no_key\n",$userinput);
1.348 raeburn 5201: }
5202: }
5203: return 1;
5204: }
1.536 raeburn 5205: ®ister_handler("egetdom", \&encrypted_get_domain_handler, 1, 1, 0);
1.348 raeburn 5206:
1.420 raeburn 5207: #
1.572 ! raeburn 5208: # Encrypted get from the namespace database file at the domain level.
! 5209: # This function retrieves a keyed item from a specific named database in the
! 5210: # domain directory.
! 5211: #
! 5212: # Parameters:
! 5213: # $cmd - Command request keyword (lti).
! 5214: # $tail - Tail of the command. This is a colon-separated list
! 5215: # consisting of the domain, coursenum, if for LTI-
! 5216: # enabled deep-linking to course content using
! 5217: # link protection configured within a course,
! 5218: # context (=deeplink) if for LTI-enabled deep-linking
! 5219: # to course content using LTI Provider settings
! 5220: # configured within a course's domain, the (escaped)
! 5221: # launch URL, the (escaped) method (typically POST),
! 5222: # and a frozen hash of the LTI launch parameters
! 5223: # from the LTI payload.
! 5224: # $client - File descriptor open on the client.
! 5225: # Returns:
! 5226: # 1 - Continue processing.
! 5227: # 0 - Exit.
! 5228: # Side effects:
! 5229: # The reply will contain an LTI itemID, if the signed LTI payload
! 5230: # could be verified using the consumer key and the shared secret
! 5231: # available for that key (for the itemID) for either the course or domain,
! 5232: # depending on values for cnum and context. The reply is encrypted before
! 5233: # being written to $client.
! 5234: #
! 5235: sub lti_handler {
! 5236: my ($cmd, $tail, $client) = @_;
! 5237:
! 5238: my $userinput = "$cmd:$tail";
! 5239:
! 5240: my ($cdom,$cnum,$context,$escurl,$escmethod,$items) = split(/:/,$tail);
! 5241: my $url = &unescape($escurl);
! 5242: my $method = &unescape($escmethod);
! 5243: my $params = &Apache::lonnet::thaw_unescape($items);
! 5244: my $res;
! 5245: if ($cnum ne '') {
! 5246: $res = &LONCAPA::Lond::crslti_itemid($cdom,$cnum,$url,$method,$params,$perlvar{'lonVersion'});
! 5247: } else {
! 5248: $res = &LONCAPA::Lond::domlti_itemid($cdom,$context,$url,$method,$params,$perlvar{'lonVersion'});
! 5249: }
! 5250: if ($res =~ /^error:/) {
! 5251: &Failure($client, \$res, $userinput);
! 5252: } else {
! 5253: if ($cipher) {
! 5254: my $cmdlength=length($res);
! 5255: $res.=" ";
! 5256: my $encres='';
! 5257: for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
! 5258: $encres.= unpack("H16",
! 5259: $cipher->encrypt(substr($res,
! 5260: $encidx,
! 5261: 8)));
! 5262: }
! 5263: &Reply( $client,"enc:$cmdlength:$encres\n",$userinput);
! 5264: } else {
! 5265: &Failure( $client, "error:no_key\n",$userinput);
! 5266: }
! 5267: }
! 5268: return 1;
! 5269: }
! 5270: ®ister_handler("lti", \<i_handler, 1, 1, 0);
! 5271:
! 5272: #
1.238 foxr 5273: # Puts an id to a domains id database.
5274: #
5275: # Parameters:
5276: # $cmd - The command that triggered us.
5277: # $tail - Remainder of the request other than the command. This is a
5278: # colon separated list containing:
5279: # $domain - The domain for which we are writing the id.
5280: # $pairs - The id info to write... this is and & separated list
5281: # of keyword=value.
5282: # $client - Socket open on the client.
5283: # Returns:
5284: # 1 - Continue processing.
5285: # Side effects:
5286: # reply is written to $client.
5287: #
5288: sub put_id_handler {
5289: my ($cmd,$tail,$client) = @_;
5290:
5291:
5292: my $userinput = "$cmd:$tail";
5293:
5294: my ($udom,$what)=split(/:/,$tail);
5295: chomp($what);
5296: my @pairs=split(/\&/,$what);
5297: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
5298: "P", $what);
5299: if ($hashref) {
5300: foreach my $pair (@pairs) {
5301: my ($key,$value)=split(/=/,$pair);
5302: $hashref->{$key}=$value;
5303: }
1.311 albertel 5304: if (&untie_domain_hash($hashref)) {
1.238 foxr 5305: &Reply($client, "ok\n", $userinput);
5306: } else {
5307: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5308: "while attempting idput\n", $userinput);
5309: }
5310: } else {
5311: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5312: "while attempting idput\n", $userinput);
5313: }
5314:
5315: return 1;
5316: }
1.263 albertel 5317: ®ister_handler("idput", \&put_id_handler, 0, 1, 0);
1.238 foxr 5318:
5319: #
5320: # Retrieves a set of id values from the id database.
5321: # Returns an & separated list of results, one for each requested id to the
5322: # client.
5323: #
5324: # Parameters:
5325: # $cmd - Command keyword that caused us to be dispatched.
5326: # $tail - Tail of the command. Consists of a colon separated:
5327: # domain - the domain whose id table we dump
5328: # ids Consists of an & separated list of
5329: # id keywords whose values will be fetched.
5330: # nonexisting keywords will have an empty value.
5331: # $client - Socket open on the client.
5332: #
5333: # Returns:
5334: # 1 - indicating processing should continue.
5335: # Side effects:
5336: # An & separated list of results is written to $client.
5337: #
5338: sub get_id_handler {
5339: my ($cmd, $tail, $client) = @_;
5340:
5341:
5342: my $userinput = "$client:$tail";
5343:
5344: my ($udom,$what)=split(/:/,$tail);
5345: chomp($what);
5346: my @queries=split(/\&/,$what);
5347: my $qresult='';
5348: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_READER());
5349: if ($hashref) {
5350: for (my $i=0;$i<=$#queries;$i++) {
5351: $qresult.="$hashref->{$queries[$i]}&";
5352: }
1.311 albertel 5353: if (&untie_domain_hash($hashref)) {
1.238 foxr 5354: $qresult=~s/\&$//;
1.387 albertel 5355: &Reply($client, \$qresult, $userinput);
1.238 foxr 5356: } else {
5357: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
5358: "while attempting idget\n",$userinput);
5359: }
5360: } else {
5361: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
5362: "while attempting idget\n",$userinput);
5363: }
5364:
5365: return 1;
5366: }
1.263 albertel 5367: ®ister_handler("idget", \&get_id_handler, 0, 1, 0);
1.238 foxr 5368:
1.501 raeburn 5369: # Deletes one or more ids in a domain's id database.
5370: #
5371: # Parameters:
5372: # $cmd - Command keyword (iddel).
5373: # $tail - Command tail. In this case a colon
5374: # separated list containing:
5375: # The domain for which we are deleting the id(s).
5376: # &-separated list of id(s) to delete.
5377: # $client - File open on client socket.
5378: # Returns:
5379: # 1 - Continue processing
5380: # 0 - Exit server.
5381: #
5382: #
5383:
5384: sub del_id_handler {
5385: my ($cmd,$tail,$client) = @_;
5386:
5387: my $userinput = "$cmd:$tail";
5388:
5389: my ($udom,$what)=split(/:/,$tail);
5390: chomp($what);
5391: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
5392: "D", $what);
5393: if ($hashref) {
5394: my @keys=split(/\&/,$what);
5395: foreach my $key (@keys) {
5396: delete($hashref->{$key});
5397: }
5398: if (&untie_user_hash($hashref)) {
5399: &Reply($client, "ok\n", $userinput);
5400: } else {
5401: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5402: "while attempting iddel\n", $userinput);
5403: }
5404: } else {
5405: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5406: "while attempting iddel\n", $userinput);
5407: }
5408: return 1;
5409: }
5410: ®ister_handler("iddel", \&del_id_handler, 0, 1, 0);
5411:
1.238 foxr 5412: #
1.299 raeburn 5413: # Puts broadcast e-mail sent by Domain Coordinator in nohist_dcmail database
5414: #
5415: # Parameters
5416: # $cmd - Command keyword that caused us to be dispatched.
5417: # $tail - Tail of the command. Consists of a colon separated:
5418: # domain - the domain whose dcmail we are recording
5419: # email Consists of key=value pair
5420: # where key is unique msgid
5421: # and value is message (in XML)
5422: # $client - Socket open on the client.
5423: #
5424: # Returns:
5425: # 1 - indicating processing should continue.
5426: # Side effects
5427: # reply is written to $client.
5428: #
5429: sub put_dcmail_handler {
5430: my ($cmd,$tail,$client) = @_;
5431: my $userinput = "$cmd:$tail";
1.463 foxr 5432:
5433:
1.299 raeburn 5434: my ($udom,$what)=split(/:/,$tail);
5435: chomp($what);
5436: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
5437: if ($hashref) {
5438: my ($key,$value)=split(/=/,$what);
5439: $hashref->{$key}=$value;
5440: }
1.311 albertel 5441: if (&untie_domain_hash($hashref)) {
1.299 raeburn 5442: &Reply($client, "ok\n", $userinput);
5443: } else {
5444: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5445: "while attempting dcmailput\n", $userinput);
5446: }
5447: return 1;
5448: }
5449: ®ister_handler("dcmailput", \&put_dcmail_handler, 0, 1, 0);
5450:
5451: #
5452: # Retrieves broadcast e-mail from nohist_dcmail database
5453: # Returns to client an & separated list of key=value pairs,
5454: # where key is msgid and value is message information.
5455: #
5456: # Parameters
5457: # $cmd - Command keyword that caused us to be dispatched.
5458: # $tail - Tail of the command. Consists of a colon separated:
5459: # domain - the domain whose dcmail table we dump
5460: # startfilter - beginning of time window
5461: # endfilter - end of time window
5462: # sendersfilter - & separated list of username:domain
5463: # for senders to search for.
5464: # $client - Socket open on the client.
5465: #
5466: # Returns:
5467: # 1 - indicating processing should continue.
5468: # Side effects
5469: # reply (& separated list of msgid=messageinfo pairs) is
5470: # written to $client.
5471: #
5472: sub dump_dcmail_handler {
5473: my ($cmd, $tail, $client) = @_;
5474:
5475: my $userinput = "$cmd:$tail";
5476: my ($udom,$startfilter,$endfilter,$sendersfilter) = split(/:/,$tail);
5477: chomp($sendersfilter);
5478: my @senders = ();
5479: if (defined($startfilter)) {
5480: $startfilter=&unescape($startfilter);
5481: } else {
5482: $startfilter='.';
5483: }
5484: if (defined($endfilter)) {
5485: $endfilter=&unescape($endfilter);
5486: } else {
5487: $endfilter='.';
5488: }
5489: if (defined($sendersfilter)) {
5490: $sendersfilter=&unescape($sendersfilter);
1.300 albertel 5491: @senders = map { &unescape($_) } split(/\&/,$sendersfilter);
1.299 raeburn 5492: }
5493:
5494: my $qresult='';
5495: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
5496: if ($hashref) {
5497: while (my ($key,$value) = each(%$hashref)) {
5498: my $match = 1;
1.303 albertel 5499: my ($timestamp,$subj,$uname,$udom) =
5500: split(/:/,&unescape(&unescape($key)),5); # yes, twice really
1.299 raeburn 5501: $subj = &unescape($subj);
5502: unless ($startfilter eq '.' || !defined($startfilter)) {
5503: if ($timestamp < $startfilter) {
5504: $match = 0;
5505: }
5506: }
5507: unless ($endfilter eq '.' || !defined($endfilter)) {
5508: if ($timestamp > $endfilter) {
5509: $match = 0;
5510: }
5511: }
5512: unless (@senders < 1) {
5513: unless (grep/^$uname:$udom$/,@senders) {
5514: $match = 0;
5515: }
5516: }
5517: if ($match == 1) {
5518: $qresult.=$key.'='.$value.'&';
5519: }
5520: }
1.311 albertel 5521: if (&untie_domain_hash($hashref)) {
1.299 raeburn 5522: chop($qresult);
1.387 albertel 5523: &Reply($client, \$qresult, $userinput);
1.299 raeburn 5524: } else {
5525: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5526: "while attempting dcmaildump\n", $userinput);
5527: }
5528: } else {
5529: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
5530: "while attempting dcmaildump\n", $userinput);
5531: }
5532: return 1;
5533: }
5534:
5535: ®ister_handler("dcmaildump", \&dump_dcmail_handler, 0, 1, 0);
5536:
5537: #
5538: # Puts domain roles in nohist_domainroles database
5539: #
5540: # Parameters
5541: # $cmd - Command keyword that caused us to be dispatched.
5542: # $tail - Tail of the command. Consists of a colon separated:
5543: # domain - the domain whose roles we are recording
5544: # role - Consists of key=value pair
5545: # where key is unique role
5546: # and value is start/end date information
5547: # $client - Socket open on the client.
5548: #
5549: # Returns:
5550: # 1 - indicating processing should continue.
5551: # Side effects
5552: # reply is written to $client.
5553: #
5554:
5555: sub put_domainroles_handler {
5556: my ($cmd,$tail,$client) = @_;
5557:
5558: my $userinput = "$cmd:$tail";
5559: my ($udom,$what)=split(/:/,$tail);
5560: chomp($what);
5561: my @pairs=split(/\&/,$what);
5562: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
5563: if ($hashref) {
5564: foreach my $pair (@pairs) {
5565: my ($key,$value)=split(/=/,$pair);
5566: $hashref->{$key}=$value;
5567: }
1.311 albertel 5568: if (&untie_domain_hash($hashref)) {
1.299 raeburn 5569: &Reply($client, "ok\n", $userinput);
5570: } else {
5571: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5572: "while attempting domroleput\n", $userinput);
5573: }
5574: } else {
5575: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5576: "while attempting domroleput\n", $userinput);
5577: }
5578:
5579: return 1;
5580: }
5581:
5582: ®ister_handler("domroleput", \&put_domainroles_handler, 0, 1, 0);
5583:
5584: #
5585: # Retrieves domain roles from nohist_domainroles database
5586: # Returns to client an & separated list of key=value pairs,
5587: # where key is role and value is start and end date information.
5588: #
5589: # Parameters
5590: # $cmd - Command keyword that caused us to be dispatched.
5591: # $tail - Tail of the command. Consists of a colon separated:
5592: # domain - the domain whose domain roles table we dump
5593: # $client - Socket open on the client.
5594: #
5595: # Returns:
5596: # 1 - indicating processing should continue.
5597: # Side effects
5598: # reply (& separated list of role=start/end info pairs) is
5599: # written to $client.
5600: #
5601: sub dump_domainroles_handler {
5602: my ($cmd, $tail, $client) = @_;
5603:
5604: my $userinput = "$cmd:$tail";
5605: my ($udom,$startfilter,$endfilter,$rolesfilter) = split(/:/,$tail);
5606: chomp($rolesfilter);
5607: my @roles = ();
5608: if (defined($startfilter)) {
5609: $startfilter=&unescape($startfilter);
5610: } else {
5611: $startfilter='.';
5612: }
5613: if (defined($endfilter)) {
5614: $endfilter=&unescape($endfilter);
5615: } else {
5616: $endfilter='.';
5617: }
5618: if (defined($rolesfilter)) {
5619: $rolesfilter=&unescape($rolesfilter);
1.300 albertel 5620: @roles = split(/\&/,$rolesfilter);
1.299 raeburn 5621: }
1.421 raeburn 5622:
1.299 raeburn 5623: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
5624: if ($hashref) {
5625: my $qresult = '';
5626: while (my ($key,$value) = each(%$hashref)) {
5627: my $match = 1;
1.421 raeburn 5628: my ($end,$start) = split(/:/,&unescape($value));
1.299 raeburn 5629: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,&unescape($key));
1.421 raeburn 5630: unless (@roles < 1) {
5631: unless (grep/^\Q$trole\E$/,@roles) {
5632: $match = 0;
5633: next;
5634: }
5635: }
1.299 raeburn 5636: unless ($startfilter eq '.' || !defined($startfilter)) {
1.415 raeburn 5637: if ((defined($start)) && ($start >= $startfilter)) {
1.299 raeburn 5638: $match = 0;
1.421 raeburn 5639: next;
1.299 raeburn 5640: }
5641: }
5642: unless ($endfilter eq '.' || !defined($endfilter)) {
1.421 raeburn 5643: if ((defined($end)) && (($end > 0) && ($end <= $endfilter))) {
1.299 raeburn 5644: $match = 0;
1.421 raeburn 5645: next;
1.299 raeburn 5646: }
5647: }
5648: if ($match == 1) {
5649: $qresult.=$key.'='.$value.'&';
5650: }
5651: }
1.311 albertel 5652: if (&untie_domain_hash($hashref)) {
1.299 raeburn 5653: chop($qresult);
1.387 albertel 5654: &Reply($client, \$qresult, $userinput);
1.299 raeburn 5655: } else {
5656: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5657: "while attempting domrolesdump\n", $userinput);
5658: }
5659: } else {
5660: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
5661: "while attempting domrolesdump\n", $userinput);
5662: }
5663: return 1;
5664: }
5665:
5666: ®ister_handler("domrolesdump", \&dump_domainroles_handler, 0, 1, 0);
5667:
5668:
1.238 foxr 5669: # Process the tmpput command I'm not sure what this does.. Seems to
5670: # create a file in the lonDaemons/tmp directory of the form $id.tmp
5671: # where Id is the client's ip concatenated with a sequence number.
5672: # The file will contain some value that is passed in. Is this e.g.
5673: # a login token?
5674: #
5675: # Parameters:
5676: # $cmd - The command that got us dispatched.
5677: # $tail - The remainder of the request following $cmd:
5678: # In this case this will be the contents of the file.
5679: # $client - Socket connected to the client.
5680: # Returns:
5681: # 1 indicating processing can continue.
5682: # Side effects:
5683: # A file is created in the local filesystem.
5684: # A reply is sent to the client.
5685: sub tmp_put_handler {
5686: my ($cmd, $what, $client) = @_;
5687:
5688: my $userinput = "$cmd:$what"; # Reconstruct for logging.
5689:
1.347 raeburn 5690: my ($record,$context) = split(/:/,$what);
5691: if ($context ne '') {
5692: chomp($context);
5693: $context = &unescape($context);
5694: }
5695: my ($id,$store);
1.238 foxr 5696: $tmpsnum++;
1.569 raeburn 5697: my $numtries = 0;
5698: my $execdir=$perlvar{'lonDaemons'};
5699: if (($context eq 'resetpw') || ($context eq 'createaccount') ||
5700: ($context eq 'sso') || ($context eq 'link') || ($context eq 'retry')) {
5701: $id = &md5_hex(&md5_hex(time.{}.rand().$$.$tmpsnum));
5702: while ((-e "$execdir/tmp/$id.tmp") && ($numtries <10)) {
5703: undef($id);
5704: $id = &md5_hex(&md5_hex(time.{}.rand().$$.$tmpsnum));
5705: $numtries ++;
5706: }
1.347 raeburn 5707: } else {
5708: $id = $$.'_'.$clientip.'_'.$tmpsnum;
5709: }
1.238 foxr 5710: $id=~s/\W/\_/g;
1.347 raeburn 5711: $record=~s/\n//g;
1.569 raeburn 5712: if (($id ne '') &&
5713: ($store=IO::File->new(">$execdir/tmp/$id.tmp"))) {
1.347 raeburn 5714: print $store $record;
1.238 foxr 5715: close $store;
1.387 albertel 5716: &Reply($client, \$id, $userinput);
1.238 foxr 5717: } else {
5718: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
5719: "while attempting tmpput\n", $userinput);
5720: }
5721: return 1;
5722:
5723: }
5724: ®ister_handler("tmpput", \&tmp_put_handler, 0, 1, 0);
1.263 albertel 5725:
1.238 foxr 5726: # Processes the tmpget command. This command returns the contents
5727: # of a temporary resource file(?) created via tmpput.
5728: #
5729: # Paramters:
5730: # $cmd - Command that got us dispatched.
5731: # $id - Tail of the command, contain the id of the resource
5732: # we want to fetch.
5733: # $client - socket open on the client.
5734: # Return:
5735: # 1 - Inidcating processing can continue.
5736: # Side effects:
5737: # A reply is sent to the client.
5738: #
5739: sub tmp_get_handler {
5740: my ($cmd, $id, $client) = @_;
5741:
5742: my $userinput = "$cmd:$id";
5743:
5744:
5745: $id=~s/\W/\_/g;
5746: my $store;
5747: my $execdir=$perlvar{'lonDaemons'};
5748: if ($store=IO::File->new("$execdir/tmp/$id.tmp")) {
5749: my $reply=<$store>;
1.387 albertel 5750: &Reply( $client, \$reply, $userinput);
1.238 foxr 5751: close $store;
5752: } else {
5753: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
5754: "while attempting tmpget\n", $userinput);
5755: }
5756:
5757: return 1;
5758: }
5759: ®ister_handler("tmpget", \&tmp_get_handler, 0, 1, 0);
1.263 albertel 5760:
1.238 foxr 5761: #
5762: # Process the tmpdel command. This command deletes a temp resource
5763: # created by the tmpput command.
5764: #
5765: # Parameters:
5766: # $cmd - Command that got us here.
5767: # $id - Id of the temporary resource created.
5768: # $client - socket open on the client process.
5769: #
5770: # Returns:
5771: # 1 - Indicating processing should continue.
5772: # Side Effects:
5773: # A file is deleted
5774: # A reply is sent to the client.
5775: sub tmp_del_handler {
5776: my ($cmd, $id, $client) = @_;
5777:
5778: my $userinput= "$cmd:$id";
5779:
5780: chomp($id);
5781: $id=~s/\W/\_/g;
5782: my $execdir=$perlvar{'lonDaemons'};
5783: if (unlink("$execdir/tmp/$id.tmp")) {
5784: &Reply($client, "ok\n", $userinput);
5785: } else {
5786: &Failure( $client, "error: ".($!+0)."Unlink tmp Failed ".
5787: "while attempting tmpdel\n", $userinput);
5788: }
5789:
5790: return 1;
5791:
5792: }
5793: ®ister_handler("tmpdel", \&tmp_del_handler, 0, 1, 0);
1.263 albertel 5794:
1.238 foxr 5795: #
1.564 raeburn 5796: # Process the updatebalcookie command. This command updates a
5797: # cookie in the lonBalancedir directory on a load balancer node.
5798: #
5799: # Parameters:
5800: # $cmd - Command that got us here.
5801: # $tail - Tail of the request (escaped cookie: escaped current entry)
5802: #
5803: # $client - socket open on the client process.
5804: #
5805: # Returns:
5806: # 1 - Indicating processing should continue.
5807: # Side Effects:
5808: # A cookie file is updated from the lonBalancedir directory
5809: # A reply is sent to the client.
5810: #
5811: sub update_balcookie_handler {
5812: my ($cmd, $tail, $client) = @_;
5813:
5814: my $userinput= "$cmd:$tail";
5815: chomp($tail);
5816: my ($cookie,$lastentry) = map { &unescape($_) } (split(/:/,$tail));
5817:
5818: my $updatedone;
5819: if ($cookie =~ /^$LONCAPA::match_domain\_$LONCAPA::match_username\_[a-f0-9]{32}$/) {
5820: my $execdir=$perlvar{'lonBalanceDir'};
5821: if (-e "$execdir/$cookie.id") {
5822: my $doupdate;
5823: if (open(my $fh,'<',"$execdir/$cookie.id")) {
5824: while (my $line = <$fh>) {
5825: chomp($line);
5826: if ($line eq $lastentry) {
5827: $doupdate = 1;
5828: last;
5829: }
5830: }
5831: close($fh);
5832: }
5833: if ($doupdate) {
5834: if (open(my $fh,'>',"$execdir/$cookie.id")) {
5835: print $fh $clientname;
5836: close($fh);
5837: $updatedone = 1;
5838: }
5839: }
5840: }
5841: }
5842: if ($updatedone) {
5843: &Reply($client, "ok\n", $userinput);
5844: } else {
5845: &Failure( $client, "error: ".($!+0)."file update failed ".
5846: "while attempting updatebalcookie\n", $userinput);
5847: }
5848: return 1;
5849: }
5850: ®ister_handler("updatebalcookie", \&update_balcookie_handler, 0, 1, 0);
5851:
5852: #
1.551 raeburn 5853: # Process the delbalcookie command. This command deletes a balancer
1.564 raeburn 5854: # cookie in the lonBalancedir directory on a load balancer node.
1.551 raeburn 5855: #
5856: # Parameters:
5857: # $cmd - Command that got us here.
5858: # $cookie - Cookie to be deleted.
5859: # $client - socket open on the client process.
5860: #
5861: # Returns:
5862: # 1 - Indicating processing should continue.
5863: # Side Effects:
5864: # A cookie file is deleted from the lonBalancedir directory
5865: # A reply is sent to the client.
5866: sub del_balcookie_handler {
5867: my ($cmd, $cookie, $client) = @_;
5868:
5869: my $userinput= "$cmd:$cookie";
5870:
5871: chomp($cookie);
1.564 raeburn 5872: $cookie = &unescape($cookie);
1.551 raeburn 5873: my $deleted = '';
5874: if ($cookie =~ /^$LONCAPA::match_domain\_$LONCAPA::match_username\_[a-f0-9]{32}$/) {
5875: my $execdir=$perlvar{'lonBalanceDir'};
5876: if (-e "$execdir/$cookie.id") {
5877: if (open(my $fh,'<',"$execdir/$cookie.id")) {
5878: my $dodelete;
5879: while (my $line = <$fh>) {
5880: chomp($line);
5881: if ($line eq $clientname) {
5882: $dodelete = 1;
1.554 raeburn 5883: last;
1.551 raeburn 5884: }
5885: }
1.554 raeburn 5886: close($fh);
1.551 raeburn 5887: if ($dodelete) {
5888: if (unlink("$execdir/$cookie.id")) {
5889: $deleted = 1;
5890: }
5891: }
5892: }
5893: }
5894: }
5895: if ($deleted) {
5896: &Reply($client, "ok\n", $userinput);
5897: } else {
5898: &Failure( $client, "error: ".($!+0)."Unlinking cookie file Failed ".
5899: "while attempting delbalcookie\n", $userinput);
5900: }
5901: return 1;
5902: }
5903: ®ister_handler("delbalcookie", \&del_balcookie_handler, 0, 1, 0);
5904:
5905: #
1.246 foxr 5906: # Processes the setannounce command. This command
5907: # creates a file named announce.txt in the top directory of
5908: # the documentn root and sets its contents. The announce.txt file is
5909: # printed in its entirety at the LonCAPA login page. Note:
5910: # once the announcement.txt fileis created it cannot be deleted.
5911: # However, setting the contents of the file to empty removes the
5912: # announcement from the login page of loncapa so who cares.
5913: #
5914: # Parameters:
5915: # $cmd - The command that got us dispatched.
5916: # $announcement - The text of the announcement.
5917: # $client - Socket open on the client process.
5918: # Retunrns:
5919: # 1 - Indicating request processing should continue
5920: # Side Effects:
5921: # The file {DocRoot}/announcement.txt is created.
5922: # A reply is sent to $client.
5923: #
5924: sub set_announce_handler {
5925: my ($cmd, $announcement, $client) = @_;
5926:
5927: my $userinput = "$cmd:$announcement";
5928:
5929: chomp($announcement);
5930: $announcement=&unescape($announcement);
5931: if (my $store=IO::File->new('>'.$perlvar{'lonDocRoot'}.
5932: '/announcement.txt')) {
5933: print $store $announcement;
5934: close $store;
5935: &Reply($client, "ok\n", $userinput);
5936: } else {
5937: &Failure($client, "error: ".($!+0)."\n", $userinput);
5938: }
5939:
5940: return 1;
5941: }
5942: ®ister_handler("setannounce", \&set_announce_handler, 0, 1, 0);
1.263 albertel 5943:
1.246 foxr 5944: #
5945: # Return the version of the daemon. This can be used to determine
5946: # the compatibility of cross version installations or, alternatively to
5947: # simply know who's out of date and who isn't. Note that the version
5948: # is returned concatenated with the tail.
5949: # Parameters:
5950: # $cmd - the request that dispatched to us.
5951: # $tail - Tail of the request (client's version?).
5952: # $client - Socket open on the client.
5953: #Returns:
5954: # 1 - continue processing requests.
5955: # Side Effects:
5956: # Replies with version to $client.
5957: sub get_version_handler {
5958: my ($cmd, $tail, $client) = @_;
5959:
5960: my $userinput = $cmd.$tail;
5961:
5962: &Reply($client, &version($userinput)."\n", $userinput);
5963:
5964:
5965: return 1;
5966: }
5967: ®ister_handler("version", \&get_version_handler, 0, 1, 0);
1.263 albertel 5968:
1.246 foxr 5969: # Set the current host and domain. This is used to support
5970: # multihomed systems. Each IP of the system, or even separate daemons
5971: # on the same IP can be treated as handling a separate lonCAPA virtual
5972: # machine. This command selects the virtual lonCAPA. The client always
5973: # knows the right one since it is lonc and it is selecting the domain/system
5974: # from the hosts.tab file.
5975: # Parameters:
5976: # $cmd - Command that dispatched us.
5977: # $tail - Tail of the command (domain/host requested).
5978: # $socket - Socket open on the client.
5979: #
5980: # Returns:
5981: # 1 - Indicates the program should continue to process requests.
5982: # Side-effects:
5983: # The default domain/system context is modified for this daemon.
5984: # a reply is sent to the client.
5985: #
5986: sub set_virtual_host_handler {
5987: my ($cmd, $tail, $socket) = @_;
5988:
5989: my $userinput ="$cmd:$tail";
5990:
5991: &Reply($client, &sethost($userinput)."\n", $userinput);
5992:
5993:
5994: return 1;
5995: }
1.247 albertel 5996: ®ister_handler("sethost", \&set_virtual_host_handler, 0, 1, 0);
1.246 foxr 5997:
5998: # Process a request to exit:
5999: # - "bye" is sent to the client.
6000: # - The client socket is shutdown and closed.
6001: # - We indicate to the caller that we should exit.
6002: # Formal Parameters:
6003: # $cmd - The command that got us here.
6004: # $tail - Tail of the command (empty).
6005: # $client - Socket open on the tail.
6006: # Returns:
6007: # 0 - Indicating the program should exit!!
6008: #
6009: sub exit_handler {
6010: my ($cmd, $tail, $client) = @_;
6011:
6012: my $userinput = "$cmd:$tail";
6013:
6014: &logthis("Client $clientip ($clientname) hanging up: $userinput");
6015: &Reply($client, "bye\n", $userinput);
6016: $client->shutdown(2); # shutdown the socket forcibly.
6017: $client->close();
6018:
6019: return 0;
6020: }
1.248 foxr 6021: ®ister_handler("exit", \&exit_handler, 0,1,1);
6022: ®ister_handler("init", \&exit_handler, 0,1,1);
6023: ®ister_handler("quit", \&exit_handler, 0,1,1);
6024:
6025: # Determine if auto-enrollment is enabled.
6026: # Note that the original had what I believe to be a defect.
6027: # The original returned 0 if the requestor was not a registerd client.
6028: # It should return "refused".
6029: # Formal Parameters:
6030: # $cmd - The command that invoked us.
6031: # $tail - The tail of the command (Extra command parameters.
6032: # $client - The socket open on the client that issued the request.
6033: # Returns:
6034: # 1 - Indicating processing should continue.
6035: #
6036: sub enrollment_enabled_handler {
6037: my ($cmd, $tail, $client) = @_;
6038: my $userinput = $cmd.":".$tail; # For logging purposes.
6039:
6040:
1.337 albertel 6041: my ($cdom) = split(/:/, $tail, 2); # Domain we're asking about.
6042:
1.248 foxr 6043: my $outcome = &localenroll::run($cdom);
1.387 albertel 6044: &Reply($client, \$outcome, $userinput);
1.248 foxr 6045:
6046: return 1;
6047: }
6048: ®ister_handler("autorun", \&enrollment_enabled_handler, 0, 1, 0);
6049:
1.417 raeburn 6050: #
1.423 raeburn 6051: # Validate an institutional code used for a LON-CAPA course.
1.417 raeburn 6052: #
6053: # Formal Parameters:
6054: # $cmd - The command request that got us dispatched.
6055: # $tail - The tail of the command. In this case,
6056: # this is a colon separated set of words that will be split
6057: # into:
1.424 raeburn 6058: # $dom - The domain for which the check of
6059: # institutional course code will occur.
6060: #
6061: # $instcode - The institutional code for the course
6062: # being requested, or validated for rights
6063: # to request.
6064: #
6065: # $owner - The course requestor (who will be the
6066: # course owner, in the form username:domain
6067: #
1.417 raeburn 6068: # $client - Socket open on the client.
6069: # Returns:
6070: # 1 - Indicating processing should continue.
6071: #
6072: sub validate_instcode_handler {
6073: my ($cmd, $tail, $client) = @_;
6074: my $userinput = "$cmd:$tail";
1.423 raeburn 6075: my ($dom,$instcode,$owner) = split(/:/, $tail);
1.422 raeburn 6076: $instcode = &unescape($instcode);
6077: $owner = &unescape($owner);
1.498 raeburn 6078: my ($outcome,$description,$credits) =
1.426 raeburn 6079: &localenroll::validate_instcode($dom,$instcode,$owner);
1.498 raeburn 6080: my $result = &escape($outcome).'&'.&escape($description).'&'.
6081: &escape($credits);
1.426 raeburn 6082: &Reply($client, \$result, $userinput);
1.417 raeburn 6083:
6084: return 1;
6085: }
6086: ®ister_handler("autovalidateinstcode", \&validate_instcode_handler, 0, 1, 0);
6087:
1.566 raeburn 6088: #
6089: # Validate co-owner for cross-listed institutional code and
6090: # institutional course code itself used for a LON-CAPA course.
6091: #
6092: # Formal Parameters:
6093: # $cmd - The command request that got us dispatched.
6094: # $tail - The tail of the command. In this case,
6095: # this is a colon separated string containing:
6096: # $dom - Course's LON-CAPA domain
6097: # $instcode - Institutional course code for the course
6098: # $inst_xlist - Institutional course Id for the crosslisting
6099: # $coowner - Username of co-owner
6100: # (values for all but $dom have been escaped).
6101: #
6102: # $client - Socket open on the client.
6103: # Returns:
6104: # 1 - Indicating processing should continue.
6105: #
6106: sub validate_instcrosslist_handler {
6107: my ($cmd, $tail, $client) = @_;
6108: my $userinput = "$cmd:$tail";
6109: my ($dom,$instcode,$inst_xlist,$coowner) = split(/:/,$tail);
6110: $instcode = &unescape($instcode);
6111: $inst_xlist = &unescape($inst_xlist);
6112: $coowner = &unescape($coowner);
6113: my $outcome = &localenroll::validate_crosslist_access($dom,$instcode,
6114: $inst_xlist,$coowner);
6115: &Reply($client, \$outcome, $userinput);
6116:
6117: return 1;
6118: }
6119: ®ister_handler("autovalidateinstcrosslist", \&validate_instcrosslist_handler, 0, 1, 0);
6120:
1.248 foxr 6121: # Get the official sections for which auto-enrollment is possible.
6122: # Since the admin people won't know about 'unofficial sections'
6123: # we cannot auto-enroll on them.
6124: # Formal Parameters:
6125: # $cmd - The command request that got us dispatched here.
6126: # $tail - The remainder of the request. In our case this
6127: # will be split into:
6128: # $coursecode - The course name from the admin point of view.
6129: # $cdom - The course's domain(?).
6130: # $client - Socket open on the client.
6131: # Returns:
6132: # 1 - Indiciting processing should continue.
6133: #
6134: sub get_sections_handler {
6135: my ($cmd, $tail, $client) = @_;
6136: my $userinput = "$cmd:$tail";
6137:
6138: my ($coursecode, $cdom) = split(/:/, $tail);
6139: my @secs = &localenroll::get_sections($coursecode,$cdom);
6140: my $seclist = &escape(join(':',@secs));
6141:
1.387 albertel 6142: &Reply($client, \$seclist, $userinput);
1.248 foxr 6143:
6144:
6145: return 1;
6146: }
6147: ®ister_handler("autogetsections", \&get_sections_handler, 0, 1, 0);
6148:
6149: # Validate the owner of a new course section.
6150: #
6151: # Formal Parameters:
6152: # $cmd - Command that got us dispatched.
6153: # $tail - the remainder of the command. For us this consists of a
6154: # colon separated string containing:
6155: # $inst - Course Id from the institutions point of view.
6156: # $owner - Proposed owner of the course.
6157: # $cdom - Domain of the course (from the institutions
6158: # point of view?)..
6159: # $client - Socket open on the client.
6160: #
6161: # Returns:
6162: # 1 - Processing should continue.
6163: #
6164: sub validate_course_owner_handler {
6165: my ($cmd, $tail, $client) = @_;
6166: my $userinput = "$cmd:$tail";
1.470 raeburn 6167: my ($inst_course_id, $owner, $cdom, $coowners) = split(/:/, $tail);
6168:
1.336 raeburn 6169: $owner = &unescape($owner);
1.470 raeburn 6170: $coowners = &unescape($coowners);
6171: my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom,$coowners);
1.387 albertel 6172: &Reply($client, \$outcome, $userinput);
1.248 foxr 6173:
6174:
6175:
6176: return 1;
6177: }
6178: ®ister_handler("autonewcourse", \&validate_course_owner_handler, 0, 1, 0);
1.263 albertel 6179:
1.248 foxr 6180: #
6181: # Validate a course section in the official schedule of classes
6182: # from the institutions point of view (part of autoenrollment).
6183: #
6184: # Formal Parameters:
6185: # $cmd - The command request that got us dispatched.
6186: # $tail - The tail of the command. In this case,
6187: # this is a colon separated set of words that will be split
6188: # into:
6189: # $inst_course_id - The course/section id from the
6190: # institutions point of view.
6191: # $cdom - The domain from the institutions
6192: # point of view.
6193: # $client - Socket open on the client.
6194: # Returns:
6195: # 1 - Indicating processing should continue.
6196: #
6197: sub validate_course_section_handler {
6198: my ($cmd, $tail, $client) = @_;
6199: my $userinput = "$cmd:$tail";
6200: my ($inst_course_id, $cdom) = split(/:/, $tail);
6201:
6202: my $outcome=&localenroll::validate_courseID($inst_course_id,$cdom);
1.387 albertel 6203: &Reply($client, \$outcome, $userinput);
1.248 foxr 6204:
6205:
6206: return 1;
6207: }
6208: ®ister_handler("autovalidatecourse", \&validate_course_section_handler, 0, 1, 0);
6209:
6210: #
1.340 raeburn 6211: # Validate course owner's access to enrollment data for specific class section.
6212: #
6213: #
6214: # Formal Parameters:
6215: # $cmd - The command request that got us dispatched.
6216: # $tail - The tail of the command. In this case this is a colon separated
1.542 raeburn 6217: # set of values that will be split into:
1.340 raeburn 6218: # $inst_class - Institutional code for the specific class section
1.542 raeburn 6219: # $ownerlist - An escaped comma-separated list of username:domain
6220: # of the course owner, and co-owner(s).
1.340 raeburn 6221: # $cdom - The domain of the course from the institution's
6222: # point of view.
6223: # $client - The socket open on the client.
6224: # Returns:
6225: # 1 - continue processing.
6226: #
6227:
6228: sub validate_class_access_handler {
6229: my ($cmd, $tail, $client) = @_;
6230: my $userinput = "$cmd:$tail";
1.383 raeburn 6231: my ($inst_class,$ownerlist,$cdom) = split(/:/, $tail);
1.392 raeburn 6232: my $owners = &unescape($ownerlist);
1.341 albertel 6233: my $outcome;
6234: eval {
6235: local($SIG{__DIE__})='DEFAULT';
1.392 raeburn 6236: $outcome=&localenroll::check_section($inst_class,$owners,$cdom);
1.341 albertel 6237: };
1.387 albertel 6238: &Reply($client,\$outcome, $userinput);
1.340 raeburn 6239:
6240: return 1;
6241: }
6242: ®ister_handler("autovalidateclass_sec", \&validate_class_access_handler, 0, 1, 0);
6243:
6244: #
1.567 raeburn 6245: # Modify institutional sections (using customized &instsec_reformat()
6246: # routine in localenroll.pm), to either clutter or declutter, for
6247: # purposes of ensuring an institutional course section (string) can
6248: # be unambiguously separated into institutional course and section.
6249: #
6250: # Formal Parameters:
6251: # $cmd - The command request that got us dispatched.
6252: # $tail - The tail of the command. In this case this is a colon separated
6253: # set of values that will be split into:
6254: # $cdom - The LON-CAPA domain of the course.
6255: # $action - Either: clutter or declutter
6256: # clutter adds character(s) to eliminate ambiguity
6257: # declutter removes the added characters (e.g., for
6258: # display of the institutional course section string.
6259: # $info - A frozen hash in which keys are:
6260: # LON-CAPA course number:Institutional course code
6261: # and values are a reference to an array of the
6262: # items to modify -- either institutional sections,
6263: # or institutional course sections (for crosslistings).
6264: # $client - The socket open on the client.
6265: # Returns:
6266: # 1 - continue processing.
6267: #
6268:
6269: sub instsec_reformat_handler {
6270: my ($cmd, $tail, $client) = @_;
6271: my $userinput = "$cmd:$tail";
6272: my ($cdom,$action,$info) = split(/:/,$tail);
6273: my $instsecref = &Apache::lonnet::thaw_unescape($info);
6274: my ($outcome,$result);
6275: eval {
6276: local($SIG{__DIE__})='DEFAULT';
6277: $outcome=&localenroll::instsec_reformat($cdom,$action,$instsecref);
6278: if ($outcome eq 'ok') {
6279: if (ref($instsecref) eq 'HASH') {
6280: foreach my $key (keys(%{$instsecref})) {
6281: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($instsecref->{$key}).'&';
6282: }
6283: $result =~ s/\&$//;
6284: }
6285: }
6286: };
6287: if (!$@) {
6288: if ($outcome eq 'ok') {
6289: &Reply( $client, \$result, $userinput);
6290: } else {
6291: &Reply($client,\$outcome, $userinput);
6292: }
6293: } else {
6294: &Failure($client,"unknown_cmd\n",$userinput);
6295: }
6296: return 1;
6297: }
6298: ®ister_handler("autoinstsecreformat",\&instsec_reformat_handler, 0, 1, 0);
6299:
6300: #
1.542 raeburn 6301: # Validate course owner or co-owners(s) access to enrollment data for all sections
6302: # and crosslistings for a particular course.
6303: #
6304: #
6305: # Formal Parameters:
6306: # $cmd - The command request that got us dispatched.
6307: # $tail - The tail of the command. In this case this is a colon separated
6308: # set of values that will be split into:
6309: # $ownerlist - An escaped comma-separated list of username:domain
6310: # of the course owner, and co-owner(s).
6311: # $cdom - The domain of the course from the institution's
6312: # point of view.
6313: # $classes - Frozen hash of institutional course sections and
6314: # crosslistings.
6315: # $client - The socket open on the client.
6316: # Returns:
6317: # 1 - continue processing.
6318: #
6319:
6320: sub validate_classes_handler {
6321: my ($cmd, $tail, $client) = @_;
6322: my $userinput = "$cmd:$tail";
6323: my ($ownerlist,$cdom,$classes) = split(/:/, $tail);
6324: my $classesref = &Apache::lonnet::thaw_unescape($classes);
6325: my $owners = &unescape($ownerlist);
6326: my $result;
6327: eval {
6328: local($SIG{__DIE__})='DEFAULT';
6329: my %validations;
6330: my $response = &localenroll::check_instclasses($owners,$cdom,$classesref,
6331: \%validations);
6332: if ($response eq 'ok') {
6333: foreach my $key (keys(%validations)) {
6334: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
6335: }
6336: $result =~ s/\&$//;
6337: } else {
6338: $result = 'error';
6339: }
6340: };
6341: if (!$@) {
6342: &Reply($client, \$result, $userinput);
6343: } else {
6344: &Failure($client,"unknown_cmd\n",$userinput);
6345: }
6346: return 1;
6347: }
6348: ®ister_handler("autovalidateinstclasses", \&validate_classes_handler, 0, 1, 0);
6349:
6350: #
1.340 raeburn 6351: # Create a password for a new LON-CAPA user added by auto-enrollment.
6352: # Only used for case where authentication method for new user is localauth
1.248 foxr 6353: #
6354: # Formal Parameters:
6355: # $cmd - The command request that got us dispatched.
6356: # $tail - The tail of the command. In this case this is a colon separated
6357: # set of words that will be split into:
1.340 raeburn 6358: # $authparam - An authentication parameter (localauth parameter).
1.248 foxr 6359: # $cdom - The domain of the course from the institution's
6360: # point of view.
6361: # $client - The socket open on the client.
6362: # Returns:
6363: # 1 - continue processing.
6364: #
6365: sub create_auto_enroll_password_handler {
6366: my ($cmd, $tail, $client) = @_;
6367: my $userinput = "$cmd:$tail";
6368:
6369: my ($authparam, $cdom) = split(/:/, $userinput);
6370:
6371: my ($create_passwd,$authchk);
6372: ($authparam,
6373: $create_passwd,
6374: $authchk) = &localenroll::create_password($authparam,$cdom);
6375:
6376: &Reply($client, &escape($authparam.':'.$create_passwd.':'.$authchk)."\n",
6377: $userinput);
6378:
6379:
6380: return 1;
6381: }
6382: ®ister_handler("autocreatepassword", \&create_auto_enroll_password_handler,
6383: 0, 1, 0);
6384:
1.522 raeburn 6385: sub auto_export_grades_handler {
6386: my ($cmd, $tail, $client) = @_;
6387: my $userinput = "$cmd:$tail";
6388: my ($cdom,$cnum,$info,$data) = split(/:/,$tail);
6389: my $inforef = &Apache::lonnet::thaw_unescape($info);
6390: my $dataref = &Apache::lonnet::thaw_unescape($data);
6391: my ($outcome,$result);;
6392: eval {
6393: local($SIG{__DIE__})='DEFAULT';
6394: my %rtnhash;
6395: $outcome=&localenroll::export_grades($cdom,$cnum,$inforef,$dataref,\%rtnhash);
6396: if ($outcome eq 'ok') {
6397: foreach my $key (keys(%rtnhash)) {
6398: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&';
6399: }
6400: $result =~ s/\&$//;
6401: }
6402: };
6403: if (!$@) {
6404: if ($outcome eq 'ok') {
6405: if ($cipher) {
6406: my $cmdlength=length($result);
6407: $result.=" ";
6408: my $encresult='';
6409: for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
6410: $encresult.= unpack("H16",
6411: $cipher->encrypt(substr($result,
6412: $encidx,
6413: 8)));
6414: }
6415: &Reply( $client, "enc:$cmdlength:$encresult\n", $userinput);
6416: } else {
6417: &Failure( $client, "error:no_key\n", $userinput);
6418: }
6419: } else {
6420: &Reply($client, "$outcome\n", $userinput);
6421: }
6422: } else {
6423: &Failure($client,"export_error\n",$userinput);
6424: }
6425: return 1;
6426: }
6427: ®ister_handler("autoexportgrades", \&auto_export_grades_handler,
1.536 raeburn 6428: 1, 1, 0);
1.522 raeburn 6429:
1.248 foxr 6430: # Retrieve and remove temporary files created by/during autoenrollment.
6431: #
6432: # Formal Parameters:
6433: # $cmd - The command that got us dispatched.
6434: # $tail - The tail of the command. In our case this is a colon
6435: # separated list that will be split into:
1.526 raeburn 6436: # $filename - The name of the file to retrieve.
1.248 foxr 6437: # The filename is given as a path relative to
6438: # the LonCAPA temp file directory.
6439: # $client - Socket open on the client.
6440: #
6441: # Returns:
6442: # 1 - Continue processing.
6443: sub retrieve_auto_file_handler {
6444: my ($cmd, $tail, $client) = @_;
6445: my $userinput = "cmd:$tail";
6446:
6447: my ($filename) = split(/:/, $tail);
6448:
6449: my $source = $perlvar{'lonDaemons'}.'/tmp/'.$filename;
1.521 raeburn 6450:
6451: if ($filename =~m{/\.\./}) {
6452: &Failure($client, "refused\n", $userinput);
1.526 raeburn 6453: } elsif ($filename !~ /^$LONCAPA::match_domain\_$LONCAPA::match_courseid\_.+_classlist\.xml$/) {
6454: &Failure($client, "refused\n", $userinput);
1.521 raeburn 6455: } elsif ( (-e $source) && ($filename ne '') ) {
1.248 foxr 6456: my $reply = '';
6457: if (open(my $fh,$source)) {
6458: while (<$fh>) {
6459: chomp($_);
6460: $_ =~ s/^\s+//g;
6461: $_ =~ s/\s+$//g;
6462: $reply .= $_;
6463: }
6464: close($fh);
6465: &Reply($client, &escape($reply)."\n", $userinput);
6466:
6467: # Does this have to be uncommented??!? (RF).
6468: #
6469: # unlink($source);
6470: } else {
6471: &Failure($client, "error\n", $userinput);
6472: }
6473: } else {
6474: &Failure($client, "error\n", $userinput);
6475: }
6476:
6477:
6478: return 1;
6479: }
6480: ®ister_handler("autoretrieve", \&retrieve_auto_file_handler, 0,1,0);
6481:
1.423 raeburn 6482: sub crsreq_checks_handler {
6483: my ($cmd, $tail, $client) = @_;
6484: my $userinput = "$cmd:$tail";
6485: my $dom = $tail;
6486: my $result;
1.519 raeburn 6487: my @reqtypes = ('official','unofficial','community','textbook','placement');
1.423 raeburn 6488: eval {
6489: local($SIG{__DIE__})='DEFAULT';
6490: my %validations;
1.424 raeburn 6491: my $response = &localenroll::crsreq_checks($dom,\@reqtypes,
6492: \%validations);
1.423 raeburn 6493: if ($response eq 'ok') {
6494: foreach my $key (keys(%validations)) {
6495: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
6496: }
6497: $result =~ s/\&$//;
6498: } else {
6499: $result = 'error';
6500: }
6501: };
6502: if (!$@) {
6503: &Reply($client, \$result, $userinput);
6504: } else {
6505: &Failure($client,"unknown_cmd\n",$userinput);
6506: }
6507: return 1;
6508: }
6509: ®ister_handler("autocrsreqchecks", \&crsreq_checks_handler, 0, 1, 0);
6510:
6511: sub validate_crsreq_handler {
6512: my ($cmd, $tail, $client) = @_;
6513: my $userinput = "$cmd:$tail";
1.508 raeburn 6514: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$customdata) = split(/:/, $tail);
1.423 raeburn 6515: $instcode = &unescape($instcode);
6516: $owner = &unescape($owner);
6517: $crstype = &unescape($crstype);
6518: $inststatuslist = &unescape($inststatuslist);
6519: $instcode = &unescape($instcode);
6520: $instseclist = &unescape($instseclist);
1.508 raeburn 6521: my $custominfo = &Apache::lonnet::thaw_unescape($customdata);
1.423 raeburn 6522: my $outcome;
6523: eval {
6524: local($SIG{__DIE__})='DEFAULT';
6525: $outcome = &localenroll::validate_crsreq($dom,$owner,$crstype,
6526: $inststatuslist,$instcode,
1.508 raeburn 6527: $instseclist,$custominfo);
1.423 raeburn 6528: };
6529: if (!$@) {
6530: &Reply($client, \$outcome, $userinput);
6531: } else {
6532: &Failure($client,"unknown_cmd\n",$userinput);
6533: }
6534: return 1;
6535: }
6536: ®ister_handler("autocrsreqvalidation", \&validate_crsreq_handler, 0, 1, 0);
6537:
1.506 raeburn 6538: sub crsreq_update_handler {
6539: my ($cmd, $tail, $client) = @_;
6540: my $userinput = "$cmd:$tail";
1.509 raeburn 6541: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,$code,
6542: $accessstart,$accessend,$infohashref) =
1.506 raeburn 6543: split(/:/, $tail);
6544: $crstype = &unescape($crstype);
6545: $action = &unescape($action);
6546: $ownername = &unescape($ownername);
6547: $ownerdomain = &unescape($ownerdomain);
6548: $fullname = &unescape($fullname);
6549: $title = &unescape($title);
6550: $code = &unescape($code);
1.509 raeburn 6551: $accessstart = &unescape($accessstart);
6552: $accessend = &unescape($accessend);
1.506 raeburn 6553: my $incoming = &Apache::lonnet::thaw_unescape($infohashref);
6554: my ($result,$outcome);
6555: eval {
6556: local($SIG{__DIE__})='DEFAULT';
6557: my %rtnhash;
6558: $outcome = &localenroll::crsreq_updates($cdom,$cnum,$crstype,$action,
6559: $ownername,$ownerdomain,$fullname,
1.509 raeburn 6560: $title,$code,$accessstart,$accessend,
6561: $incoming,\%rtnhash);
1.506 raeburn 6562: if ($outcome eq 'ok') {
1.515 raeburn 6563: my @posskeys = qw(createdweb createdmsg createdcustomized createdactions queuedweb queuedmsg formitems reviewweb validationjs onload javascript);
1.506 raeburn 6564: foreach my $key (keys(%rtnhash)) {
6565: if (grep(/^\Q$key\E/,@posskeys)) {
6566: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&';
6567: }
6568: }
6569: $result =~ s/\&$//;
6570: }
6571: };
6572: if (!$@) {
6573: if ($outcome eq 'ok') {
6574: &Reply($client, \$result, $userinput);
6575: } else {
6576: &Reply($client, "format_error\n", $userinput);
6577: }
6578: } else {
6579: &Failure($client,"unknown_cmd\n",$userinput);
6580: }
6581: return 1;
6582: }
6583: ®ister_handler("autocrsrequpdate", \&crsreq_update_handler, 0, 1, 0);
6584:
1.248 foxr 6585: #
6586: # Read and retrieve institutional code format (for support form).
6587: # Formal Parameters:
6588: # $cmd - Command that dispatched us.
6589: # $tail - Tail of the command. In this case it conatins
6590: # the course domain and the coursename.
6591: # $client - Socket open on the client.
6592: # Returns:
6593: # 1 - Continue processing.
6594: #
6595: sub get_institutional_code_format_handler {
6596: my ($cmd, $tail, $client) = @_;
6597: my $userinput = "$cmd:$tail";
6598:
6599: my $reply;
6600: my($cdom,$course) = split(/:/,$tail);
6601: my @pairs = split/\&/,$course;
6602: my %instcodes = ();
6603: my %codes = ();
6604: my @codetitles = ();
6605: my %cat_titles = ();
6606: my %cat_order = ();
6607: foreach (@pairs) {
6608: my ($key,$value) = split/=/,$_;
6609: $instcodes{&unescape($key)} = &unescape($value);
6610: }
6611: my $formatreply = &localenroll::instcode_format($cdom,
6612: \%instcodes,
6613: \%codes,
6614: \@codetitles,
6615: \%cat_titles,
6616: \%cat_order);
6617: if ($formatreply eq 'ok') {
1.365 albertel 6618: my $codes_str = &Apache::lonnet::hash2str(%codes);
6619: my $codetitles_str = &Apache::lonnet::array2str(@codetitles);
6620: my $cat_titles_str = &Apache::lonnet::hash2str(%cat_titles);
6621: my $cat_order_str = &Apache::lonnet::hash2str(%cat_order);
1.248 foxr 6622: &Reply($client,
6623: $codes_str.':'.$codetitles_str.':'.$cat_titles_str.':'
6624: .$cat_order_str."\n",
6625: $userinput);
6626: } else {
6627: # this else branch added by RF since if not ok, lonc will
6628: # hang waiting on reply until timeout.
6629: #
6630: &Reply($client, "format_error\n", $userinput);
6631: }
6632:
6633: return 1;
6634: }
1.265 albertel 6635: ®ister_handler("autoinstcodeformat",
6636: \&get_institutional_code_format_handler,0,1,0);
1.246 foxr 6637:
1.345 raeburn 6638: sub get_institutional_defaults_handler {
6639: my ($cmd, $tail, $client) = @_;
6640: my $userinput = "$cmd:$tail";
6641:
6642: my $dom = $tail;
6643: my %defaults_hash;
6644: my @code_order;
6645: my $outcome;
6646: eval {
6647: local($SIG{__DIE__})='DEFAULT';
6648: $outcome = &localenroll::instcode_defaults($dom,\%defaults_hash,
6649: \@code_order);
6650: };
6651: if (!$@) {
6652: if ($outcome eq 'ok') {
6653: my $result='';
6654: while (my ($key,$value) = each(%defaults_hash)) {
6655: $result.=&escape($key).'='.&escape($value).'&';
6656: }
6657: $result .= 'code_order='.&escape(join('&',@code_order));
1.387 albertel 6658: &Reply($client,\$result,$userinput);
1.345 raeburn 6659: } else {
6660: &Reply($client,"error\n", $userinput);
6661: }
6662: } else {
6663: &Failure($client,"unknown_cmd\n",$userinput);
6664: }
6665: }
6666: ®ister_handler("autoinstcodedefaults",
6667: \&get_institutional_defaults_handler,0,1,0);
6668:
1.416 raeburn 6669: sub get_possible_instcodes_handler {
6670: my ($cmd, $tail, $client) = @_;
6671: my $userinput = "$cmd:$tail";
6672:
6673: my $reply;
6674: my $cdom = $tail;
1.417 raeburn 6675: my (@codetitles,%cat_titles,%cat_order,@code_order);
1.416 raeburn 6676: my $formatreply = &localenroll::possible_instcodes($cdom,
6677: \@codetitles,
6678: \%cat_titles,
1.417 raeburn 6679: \%cat_order,
6680: \@code_order);
1.416 raeburn 6681: if ($formatreply eq 'ok') {
6682: my $result = join('&',map {&escape($_);} (@codetitles)).':';
1.417 raeburn 6683: $result .= join('&',map {&escape($_);} (@code_order)).':';
1.416 raeburn 6684: foreach my $key (keys(%cat_titles)) {
6685: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_titles{$key}).'&';
6686: }
6687: $result =~ s/\&$//;
6688: $result .= ':';
6689: foreach my $key (keys(%cat_order)) {
6690: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_order{$key}).'&';
6691: }
6692: $result =~ s/\&$//;
6693: &Reply($client,\$result,$userinput);
6694: } else {
6695: &Reply($client, "format_error\n", $userinput);
6696: }
6697: return 1;
6698: }
6699: ®ister_handler("autopossibleinstcodes",
6700: \&get_possible_instcodes_handler,0,1,0);
6701:
1.381 raeburn 6702: sub get_institutional_user_rules {
6703: my ($cmd, $tail, $client) = @_;
6704: my $userinput = "$cmd:$tail";
6705: my $dom = &unescape($tail);
6706: my (%rules_hash,@rules_order);
6707: my $outcome;
6708: eval {
6709: local($SIG{__DIE__})='DEFAULT';
6710: $outcome = &localenroll::username_rules($dom,\%rules_hash,\@rules_order);
6711: };
6712: if (!$@) {
6713: if ($outcome eq 'ok') {
6714: my $result;
6715: foreach my $key (keys(%rules_hash)) {
6716: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6717: }
6718: $result =~ s/\&$//;
6719: $result .= ':';
6720: if (@rules_order > 0) {
6721: foreach my $item (@rules_order) {
6722: $result .= &escape($item).'&';
6723: }
6724: }
6725: $result =~ s/\&$//;
1.387 albertel 6726: &Reply($client,\$result,$userinput);
1.381 raeburn 6727: } else {
6728: &Reply($client,"error\n", $userinput);
6729: }
6730: } else {
6731: &Failure($client,"unknown_cmd\n",$userinput);
6732: }
6733: }
6734: ®ister_handler("instuserrules",\&get_institutional_user_rules,0,1,0);
6735:
1.389 raeburn 6736: sub get_institutional_id_rules {
6737: my ($cmd, $tail, $client) = @_;
6738: my $userinput = "$cmd:$tail";
6739: my $dom = &unescape($tail);
6740: my (%rules_hash,@rules_order);
6741: my $outcome;
6742: eval {
6743: local($SIG{__DIE__})='DEFAULT';
6744: $outcome = &localenroll::id_rules($dom,\%rules_hash,\@rules_order);
6745: };
6746: if (!$@) {
6747: if ($outcome eq 'ok') {
6748: my $result;
6749: foreach my $key (keys(%rules_hash)) {
6750: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6751: }
6752: $result =~ s/\&$//;
6753: $result .= ':';
6754: if (@rules_order > 0) {
6755: foreach my $item (@rules_order) {
6756: $result .= &escape($item).'&';
6757: }
6758: }
6759: $result =~ s/\&$//;
6760: &Reply($client,\$result,$userinput);
6761: } else {
6762: &Reply($client,"error\n", $userinput);
6763: }
6764: } else {
6765: &Failure($client,"unknown_cmd\n",$userinput);
6766: }
6767: }
6768: ®ister_handler("instidrules",\&get_institutional_id_rules,0,1,0);
6769:
1.397 raeburn 6770: sub get_institutional_selfcreate_rules {
1.396 raeburn 6771: my ($cmd, $tail, $client) = @_;
6772: my $userinput = "$cmd:$tail";
6773: my $dom = &unescape($tail);
6774: my (%rules_hash,@rules_order);
6775: my $outcome;
6776: eval {
6777: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 6778: $outcome = &localenroll::selfcreate_rules($dom,\%rules_hash,\@rules_order);
1.396 raeburn 6779: };
6780: if (!$@) {
6781: if ($outcome eq 'ok') {
6782: my $result;
6783: foreach my $key (keys(%rules_hash)) {
6784: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6785: }
6786: $result =~ s/\&$//;
6787: $result .= ':';
6788: if (@rules_order > 0) {
6789: foreach my $item (@rules_order) {
6790: $result .= &escape($item).'&';
6791: }
6792: }
6793: $result =~ s/\&$//;
6794: &Reply($client,\$result,$userinput);
6795: } else {
6796: &Reply($client,"error\n", $userinput);
6797: }
6798: } else {
6799: &Failure($client,"unknown_cmd\n",$userinput);
6800: }
6801: }
1.397 raeburn 6802: ®ister_handler("instemailrules",\&get_institutional_selfcreate_rules,0,1,0);
1.396 raeburn 6803:
1.381 raeburn 6804:
6805: sub institutional_username_check {
6806: my ($cmd, $tail, $client) = @_;
6807: my $userinput = "$cmd:$tail";
6808: my %rulecheck;
6809: my $outcome;
6810: my ($udom,$uname,@rules) = split(/:/,$tail);
6811: $udom = &unescape($udom);
6812: $uname = &unescape($uname);
6813: @rules = map {&unescape($_);} (@rules);
6814: eval {
6815: local($SIG{__DIE__})='DEFAULT';
6816: $outcome = &localenroll::username_check($udom,$uname,\@rules,\%rulecheck);
6817: };
6818: if (!$@) {
6819: if ($outcome eq 'ok') {
6820: my $result='';
6821: foreach my $key (keys(%rulecheck)) {
6822: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6823: }
1.387 albertel 6824: &Reply($client,\$result,$userinput);
1.381 raeburn 6825: } else {
6826: &Reply($client,"error\n", $userinput);
6827: }
6828: } else {
6829: &Failure($client,"unknown_cmd\n",$userinput);
6830: }
6831: }
6832: ®ister_handler("instrulecheck",\&institutional_username_check,0,1,0);
6833:
1.389 raeburn 6834: sub institutional_id_check {
6835: my ($cmd, $tail, $client) = @_;
6836: my $userinput = "$cmd:$tail";
6837: my %rulecheck;
6838: my $outcome;
6839: my ($udom,$id,@rules) = split(/:/,$tail);
6840: $udom = &unescape($udom);
6841: $id = &unescape($id);
6842: @rules = map {&unescape($_);} (@rules);
6843: eval {
6844: local($SIG{__DIE__})='DEFAULT';
6845: $outcome = &localenroll::id_check($udom,$id,\@rules,\%rulecheck);
6846: };
6847: if (!$@) {
6848: if ($outcome eq 'ok') {
6849: my $result='';
6850: foreach my $key (keys(%rulecheck)) {
6851: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6852: }
6853: &Reply($client,\$result,$userinput);
6854: } else {
6855: &Reply($client,"error\n", $userinput);
6856: }
6857: } else {
6858: &Failure($client,"unknown_cmd\n",$userinput);
6859: }
6860: }
6861: ®ister_handler("instidrulecheck",\&institutional_id_check,0,1,0);
1.345 raeburn 6862:
1.397 raeburn 6863: sub institutional_selfcreate_check {
1.396 raeburn 6864: my ($cmd, $tail, $client) = @_;
6865: my $userinput = "$cmd:$tail";
6866: my %rulecheck;
6867: my $outcome;
6868: my ($udom,$email,@rules) = split(/:/,$tail);
6869: $udom = &unescape($udom);
6870: $email = &unescape($email);
6871: @rules = map {&unescape($_);} (@rules);
6872: eval {
6873: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 6874: $outcome = &localenroll::selfcreate_check($udom,$email,\@rules,\%rulecheck);
1.396 raeburn 6875: };
6876: if (!$@) {
6877: if ($outcome eq 'ok') {
6878: my $result='';
6879: foreach my $key (keys(%rulecheck)) {
6880: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6881: }
6882: &Reply($client,\$result,$userinput);
6883: } else {
6884: &Reply($client,"error\n", $userinput);
6885: }
6886: } else {
6887: &Failure($client,"unknown_cmd\n",$userinput);
6888: }
6889: }
1.397 raeburn 6890: ®ister_handler("instselfcreatecheck",\&institutional_selfcreate_check,0,1,0);
1.396 raeburn 6891:
1.317 raeburn 6892: # Get domain specific conditions for import of student photographs to a course
6893: #
6894: # Retrieves information from photo_permission subroutine in localenroll.
6895: # Returns outcome (ok) if no processing errors, and whether course owner is
6896: # required to accept conditions of use (yes/no).
6897: #
6898: #
6899: sub photo_permission_handler {
6900: my ($cmd, $tail, $client) = @_;
6901: my $userinput = "$cmd:$tail";
6902: my $cdom = $tail;
6903: my ($perm_reqd,$conditions);
1.320 albertel 6904: my $outcome;
6905: eval {
6906: local($SIG{__DIE__})='DEFAULT';
6907: $outcome = &localenroll::photo_permission($cdom,\$perm_reqd,
6908: \$conditions);
6909: };
6910: if (!$@) {
6911: &Reply($client, &escape($outcome.':'.$perm_reqd.':'. $conditions)."\n",
6912: $userinput);
6913: } else {
6914: &Failure($client,"unknown_cmd\n",$userinput);
6915: }
6916: return 1;
1.317 raeburn 6917: }
6918: ®ister_handler("autophotopermission",\&photo_permission_handler,0,1,0);
6919:
6920: #
6921: # Checks if student photo is available for a user in the domain, in the user's
6922: # directory (in /userfiles/internal/studentphoto.jpg).
6923: # Uses localstudentphoto:fetch() to ensure there is an up to date copy of
6924: # the student's photo.
6925:
6926: sub photo_check_handler {
6927: my ($cmd, $tail, $client) = @_;
6928: my $userinput = "$cmd:$tail";
6929: my ($udom,$uname,$pid) = split(/:/,$tail);
6930: $udom = &unescape($udom);
6931: $uname = &unescape($uname);
6932: $pid = &unescape($pid);
6933: my $path=&propath($udom,$uname).'/userfiles/internal/';
6934: if (!-e $path) {
6935: &mkpath($path);
6936: }
6937: my $response;
6938: my $result = &localstudentphoto::fetch($udom,$uname,$pid,\$response);
6939: $result .= ':'.$response;
6940: &Reply($client, &escape($result)."\n",$userinput);
1.320 albertel 6941: return 1;
1.317 raeburn 6942: }
6943: ®ister_handler("autophotocheck",\&photo_check_handler,0,1,0);
6944:
6945: #
6946: # Retrieve information from localenroll about whether to provide a button
6947: # for users who have enbled import of student photos to initiate an
6948: # update of photo files for registered students. Also include
6949: # comment to display alongside button.
6950:
6951: sub photo_choice_handler {
6952: my ($cmd, $tail, $client) = @_;
6953: my $userinput = "$cmd:$tail";
6954: my $cdom = &unescape($tail);
1.320 albertel 6955: my ($update,$comment);
6956: eval {
6957: local($SIG{__DIE__})='DEFAULT';
6958: ($update,$comment) = &localenroll::manager_photo_update($cdom);
6959: };
6960: if (!$@) {
6961: &Reply($client,&escape($update).':'.&escape($comment)."\n",$userinput);
6962: } else {
6963: &Failure($client,"unknown_cmd\n",$userinput);
6964: }
6965: return 1;
1.317 raeburn 6966: }
6967: ®ister_handler("autophotochoice",\&photo_choice_handler,0,1,0);
6968:
1.265 albertel 6969: #
6970: # Gets a student's photo to exist (in the correct image type) in the user's
6971: # directory.
6972: # Formal Parameters:
6973: # $cmd - The command request that got us dispatched.
6974: # $tail - A colon separated set of words that will be split into:
6975: # $domain - student's domain
6976: # $uname - student username
6977: # $type - image type desired
6978: # $client - The socket open on the client.
6979: # Returns:
6980: # 1 - continue processing.
1.317 raeburn 6981:
1.265 albertel 6982: sub student_photo_handler {
6983: my ($cmd, $tail, $client) = @_;
1.317 raeburn 6984: my ($domain,$uname,$ext,$type) = split(/:/, $tail);
1.265 albertel 6985:
1.317 raeburn 6986: my $path=&propath($domain,$uname). '/userfiles/internal/';
6987: my $filename = 'studentphoto.'.$ext;
6988: if ($type eq 'thumbnail') {
6989: $filename = 'studentphoto_tn.'.$ext;
6990: }
6991: if (-e $path.$filename) {
1.265 albertel 6992: &Reply($client,"ok\n","$cmd:$tail");
6993: return 1;
6994: }
6995: &mkpath($path);
1.317 raeburn 6996: my $file;
6997: if ($type eq 'thumbnail') {
1.320 albertel 6998: eval {
6999: local($SIG{__DIE__})='DEFAULT';
7000: $file=&localstudentphoto::fetch_thumbnail($domain,$uname);
7001: };
1.317 raeburn 7002: } else {
7003: $file=&localstudentphoto::fetch($domain,$uname);
7004: }
1.265 albertel 7005: if (!$file) {
7006: &Failure($client,"unavailable\n","$cmd:$tail");
7007: return 1;
7008: }
1.317 raeburn 7009: if (!-e $path.$filename) { &convert_photo($file,$path.$filename); }
7010: if (-e $path.$filename) {
1.265 albertel 7011: &Reply($client,"ok\n","$cmd:$tail");
7012: return 1;
7013: }
7014: &Failure($client,"unable_to_convert\n","$cmd:$tail");
7015: return 1;
7016: }
7017: ®ister_handler("studentphoto", \&student_photo_handler, 0, 1, 0);
1.246 foxr 7018:
1.361 raeburn 7019: sub inst_usertypes_handler {
7020: my ($cmd, $domain, $client) = @_;
7021: my $res;
7022: my $userinput = $cmd.":".$domain; # For logging purposes.
1.370 albertel 7023: my (%typeshash,@order,$result);
7024: eval {
7025: local($SIG{__DIE__})='DEFAULT';
7026: $result=&localenroll::inst_usertypes($domain,\%typeshash,\@order);
7027: };
7028: if ($result eq 'ok') {
1.361 raeburn 7029: if (keys(%typeshash) > 0) {
7030: foreach my $key (keys(%typeshash)) {
7031: $res.=&escape($key).'='.&escape($typeshash{$key}).'&';
7032: }
7033: }
7034: $res=~s/\&$//;
7035: $res .= ':';
7036: if (@order > 0) {
7037: foreach my $item (@order) {
7038: $res .= &escape($item).'&';
7039: }
7040: }
7041: $res=~s/\&$//;
7042: }
1.387 albertel 7043: &Reply($client, \$res, $userinput);
1.361 raeburn 7044: return 1;
7045: }
7046: ®ister_handler("inst_usertypes", \&inst_usertypes_handler, 0, 1, 0);
7047:
1.264 albertel 7048: # mkpath makes all directories for a file, expects an absolute path with a
7049: # file or a trailing / if just a dir is passed
7050: # returns 1 on success 0 on failure
7051: sub mkpath {
7052: my ($file)=@_;
7053: my @parts=split(/\//,$file,-1);
7054: my $now=$parts[0].'/'.$parts[1].'/'.$parts[2];
7055: for (my $i=3;$i<= ($#parts-1);$i++) {
1.265 albertel 7056: $now.='/'.$parts[$i];
1.264 albertel 7057: if (!-e $now) {
7058: if (!mkdir($now,0770)) { return 0; }
7059: }
7060: }
7061: return 1;
7062: }
7063:
1.207 foxr 7064: #---------------------------------------------------------------
7065: #
7066: # Getting, decoding and dispatching requests:
7067: #
7068: #
7069: # Get a Request:
7070: # Gets a Request message from the client. The transaction
7071: # is defined as a 'line' of text. We remove the new line
7072: # from the text line.
1.226 foxr 7073: #
1.211 albertel 7074: sub get_request {
1.207 foxr 7075: my $input = <$client>;
7076: chomp($input);
1.226 foxr 7077:
1.234 foxr 7078: &Debug("get_request: Request = $input\n");
1.207 foxr 7079:
7080: &status('Processing '.$clientname.':'.$input);
7081:
7082: return $input;
7083: }
1.212 foxr 7084: #---------------------------------------------------------------
7085: #
7086: # Process a request. This sub should shrink as each action
7087: # gets farmed out into a separat sub that is registered
7088: # with the dispatch hash.
7089: #
7090: # Parameters:
7091: # user_input - The request received from the client (lonc).
1.525 raeburn 7092: #
1.212 foxr 7093: # Returns:
7094: # true to keep processing, false if caller should exit.
7095: #
7096: sub process_request {
1.525 raeburn 7097: my ($userinput) = @_; # Easier for now to break style than to
7098: # fix all the userinput -> user_input.
1.212 foxr 7099: my $wasenc = 0; # True if request was encrypted.
7100: # ------------------------------------------------------------ See if encrypted
1.322 albertel 7101: # for command
7102: # sethost:<server>
7103: # <command>:<args>
7104: # we just send it to the processor
7105: # for
7106: # sethost:<server>:<command>:<args>
7107: # we do the implict set host and then do the command
7108: if ($userinput =~ /^sethost:/) {
7109: (my $cmd,my $newid,$userinput) = split(':',$userinput,3);
7110: if (defined($userinput)) {
7111: &sethost("$cmd:$newid");
7112: } else {
7113: $userinput = "$cmd:$newid";
7114: }
7115: }
7116:
1.212 foxr 7117: if ($userinput =~ /^enc/) {
7118: $userinput = decipher($userinput);
7119: $wasenc=1;
7120: if(!$userinput) { # Cipher not defined.
1.251 foxr 7121: &Failure($client, "error: Encrypted data without negotated key\n");
1.212 foxr 7122: return 0;
7123: }
7124: }
7125: Debug("process_request: $userinput\n");
7126:
1.213 foxr 7127: #
7128: # The 'correct way' to add a command to lond is now to
7129: # write a sub to execute it and Add it to the command dispatch
7130: # hash via a call to register_handler.. The comments to that
7131: # sub should give you enough to go on to show how to do this
7132: # along with the examples that are building up as this code
7133: # is getting refactored. Until all branches of the
7134: # if/elseif monster below have been factored out into
7135: # separate procesor subs, if the dispatch hash is missing
7136: # the command keyword, we will fall through to the remainder
7137: # of the if/else chain below in order to keep this thing in
7138: # working order throughout the transmogrification.
7139:
7140: my ($command, $tail) = split(/:/, $userinput, 2);
7141: chomp($command);
7142: chomp($tail);
7143: $tail =~ s/(\r)//; # This helps people debugging with e.g. telnet.
1.214 foxr 7144: $command =~ s/(\r)//; # And this too for parameterless commands.
7145: if(!$tail) {
7146: $tail =""; # defined but blank.
7147: }
1.213 foxr 7148:
7149: &Debug("Command received: $command, encoded = $wasenc");
7150:
7151: if(defined $Dispatcher{$command}) {
7152:
7153: my $dispatch_info = $Dispatcher{$command};
7154: my $handler = $$dispatch_info[0];
7155: my $need_encode = $$dispatch_info[1];
7156: my $client_types = $$dispatch_info[2];
7157: Debug("Matched dispatch hash: mustencode: $need_encode "
7158: ."ClientType $client_types");
7159:
7160: # Validate the request:
7161:
7162: my $ok = 1;
7163: my $requesterprivs = 0;
7164: if(&isClient()) {
7165: $requesterprivs |= $CLIENT_OK;
7166: }
7167: if(&isManager()) {
7168: $requesterprivs |= $MANAGER_OK;
7169: }
7170: if($need_encode && (!$wasenc)) {
7171: Debug("Must encode but wasn't: $need_encode $wasenc");
7172: $ok = 0;
7173: }
7174: if(($client_types & $requesterprivs) == 0) {
7175: Debug("Client not privileged to do this operation");
7176: $ok = 0;
7177: }
1.525 raeburn 7178: if ($ok) {
1.535 raeburn 7179: my $realcommand = $command;
7180: if ($command eq 'querysend') {
7181: my ($query,$rest)=split(/\:/,$tail,2);
7182: $query=~s/\n*$//g;
7183: my @possqueries =
7184: qw(userlog courselog fetchenrollment institutionalphotos usersearch instdirsearch getinstuser getmultinstusers);
7185: if (grep(/^\Q$query\E$/,@possqueries)) {
7186: $command .= '_'.$query;
7187: } elsif ($query eq 'prepare activity log') {
7188: $command .= '_activitylog';
7189: }
7190: }
1.525 raeburn 7191: if (ref($trust{$command}) eq 'HASH') {
7192: my $donechecks;
7193: if ($trust{$command}{'anywhere'}) {
7194: $donechecks = 1;
7195: } elsif ($trust{$command}{'manageronly'}) {
7196: unless (&isManager()) {
7197: $ok = 0;
7198: }
7199: $donechecks = 1;
7200: } elsif ($trust{$command}{'institutiononly'}) {
7201: unless ($clientsameinst) {
7202: $ok = 0;
7203: }
7204: $donechecks = 1;
7205: } elsif ($clientsameinst) {
7206: $donechecks = 1;
7207: }
7208: unless ($donechecks) {
7209: foreach my $rule (keys(%{$trust{$command}})) {
7210: next if ($rule eq 'remote');
7211: if ($trust{$command}{$rule}) {
7212: if ($clientprohibited{$rule}) {
7213: $ok = 0;
7214: } else {
7215: $ok = 1;
7216: $donechecks = 1;
7217: last;
7218: }
7219: }
7220: }
7221: }
7222: unless ($donechecks) {
7223: if ($trust{$command}{'remote'}) {
7224: if ($clientremoteok) {
7225: $ok = 1;
7226: } else {
7227: $ok = 0;
7228: }
7229: }
7230: }
7231: }
1.535 raeburn 7232: $command = $realcommand;
1.525 raeburn 7233: }
1.213 foxr 7234:
7235: if($ok) {
7236: Debug("Dispatching to handler $command $tail");
7237: my $keep_going = &$handler($command, $tail, $client);
7238: return $keep_going;
7239: } else {
7240: Debug("Refusing to dispatch because client did not match requirements");
7241: Failure($client, "refused\n", $userinput);
7242: return 1;
7243: }
1.525 raeburn 7244: }
1.213 foxr 7245:
1.262 foxr 7246: print $client "unknown_cmd\n";
1.212 foxr 7247: # -------------------------------------------------------------------- complete
7248: Debug("process_request - returning 1");
7249: return 1;
7250: }
1.207 foxr 7251: #
7252: # Decipher encoded traffic
7253: # Parameters:
7254: # input - Encoded data.
7255: # Returns:
7256: # Decoded data or undef if encryption key was not yet negotiated.
7257: # Implicit input:
7258: # cipher - This global holds the negotiated encryption key.
7259: #
1.211 albertel 7260: sub decipher {
1.207 foxr 7261: my ($input) = @_;
7262: my $output = '';
1.212 foxr 7263:
7264:
1.207 foxr 7265: if($cipher) {
7266: my($enc, $enclength, $encinput) = split(/:/, $input);
7267: for(my $encidx = 0; $encidx < length($encinput); $encidx += 16) {
7268: $output .=
7269: $cipher->decrypt(pack("H16", substr($encinput, $encidx, 16)));
7270: }
7271: return substr($output, 0, $enclength);
7272: } else {
7273: return undef;
7274: }
7275: }
7276:
7277: #
7278: # Register a command processor. This function is invoked to register a sub
7279: # to process a request. Once registered, the ProcessRequest sub can automatically
7280: # dispatch requests to an appropriate sub, and do the top level validity checking
7281: # as well:
7282: # - Is the keyword recognized.
7283: # - Is the proper client type attempting the request.
7284: # - Is the request encrypted if it has to be.
7285: # Parameters:
7286: # $request_name - Name of the request being registered.
7287: # This is the command request that will match
7288: # against the hash keywords to lookup the information
7289: # associated with the dispatch information.
7290: # $procedure - Reference to a sub to call to process the request.
7291: # All subs get called as follows:
7292: # Procedure($cmd, $tail, $replyfd, $key)
7293: # $cmd - the actual keyword that invoked us.
7294: # $tail - the tail of the request that invoked us.
7295: # $replyfd- File descriptor connected to the client
7296: # $must_encode - True if the request must be encoded to be good.
7297: # $client_ok - True if it's ok for a client to request this.
7298: # $manager_ok - True if it's ok for a manager to request this.
7299: # Side effects:
7300: # - On success, the Dispatcher hash has an entry added for the key $RequestName
7301: # - On failure, the program will die as it's a bad internal bug to try to
7302: # register a duplicate command handler.
7303: #
1.211 albertel 7304: sub register_handler {
1.212 foxr 7305: my ($request_name,$procedure,$must_encode, $client_ok,$manager_ok) = @_;
1.207 foxr 7306:
7307: # Don't allow duplication#
7308:
7309: if (defined $Dispatcher{$request_name}) {
7310: die "Attempting to define a duplicate request handler for $request_name\n";
7311: }
7312: # Build the client type mask:
7313:
7314: my $client_type_mask = 0;
7315: if($client_ok) {
7316: $client_type_mask |= $CLIENT_OK;
7317: }
7318: if($manager_ok) {
7319: $client_type_mask |= $MANAGER_OK;
7320: }
7321:
7322: # Enter the hash:
7323:
7324: my @entry = ($procedure, $must_encode, $client_type_mask);
7325:
7326: $Dispatcher{$request_name} = \@entry;
7327:
7328: }
7329:
7330:
7331: #------------------------------------------------------------------
7332:
7333:
7334:
7335:
1.141 foxr 7336: #
1.96 foxr 7337: # Convert an error return code from lcpasswd to a string value.
7338: #
7339: sub lcpasswdstrerror {
7340: my $ErrorCode = shift;
1.97 foxr 7341: if(($ErrorCode < 0) || ($ErrorCode > $lastpwderror)) {
1.96 foxr 7342: return "lcpasswd Unrecognized error return value ".$ErrorCode;
7343: } else {
1.98 foxr 7344: return $passwderrors[$ErrorCode];
1.96 foxr 7345: }
7346: }
7347:
1.23 harris41 7348: # grabs exception and records it to log before exiting
7349: sub catchexception {
1.27 albertel 7350: my ($error)=@_;
1.25 www 7351: $SIG{'QUIT'}='DEFAULT';
7352: $SIG{__DIE__}='DEFAULT';
1.165 albertel 7353: &status("Catching exception");
1.190 albertel 7354: &logthis("<font color='red'>CRITICAL: "
1.373 albertel 7355: ."ABNORMAL EXIT. Child $$ for server ".$perlvar{'lonHostID'}." died through "
1.27 albertel 7356: ."a crash with this error msg->[$error]</font>");
1.57 www 7357: &logthis('Famous last words: '.$status.' - '.$lastlog);
1.27 albertel 7358: if ($client) { print $client "error: $error\n"; }
1.59 www 7359: $server->close();
1.27 albertel 7360: die($error);
1.23 harris41 7361: }
1.63 www 7362: sub timeout {
1.165 albertel 7363: &status("Handling Timeout");
1.190 albertel 7364: &logthis("<font color='red'>CRITICAL: TIME OUT ".$$."</font>");
1.63 www 7365: &catchexception('Timeout');
7366: }
1.22 harris41 7367: # -------------------------------- Set signal handlers to record abnormal exits
7368:
1.226 foxr 7369:
1.22 harris41 7370: $SIG{'QUIT'}=\&catchexception;
7371: $SIG{__DIE__}=\&catchexception;
7372:
1.81 matthew 7373: # ---------------------------------- Read loncapa_apache.conf and loncapa.conf
1.95 harris41 7374: &status("Read loncapa.conf and loncapa_apache.conf");
7375: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
1.141 foxr 7376: %perlvar=%{$perlvarref};
1.80 harris41 7377: undef $perlvarref;
1.19 www 7378:
1.35 harris41 7379: # ----------------------------- Make sure this process is running from user=www
7380: my $wwwid=getpwnam('www');
7381: if ($wwwid!=$<) {
1.134 albertel 7382: my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
7383: my $subj="LON: $currenthostid User ID mismatch";
1.550 raeburn 7384: system("echo 'User ID mismatch. lond must be run as user www.' |".
7385: " mail -s '$subj' $emailto > /dev/null");
1.35 harris41 7386: exit 1;
7387: }
7388:
1.19 www 7389: # --------------------------------------------- Check if other instance running
7390:
7391: my $pidfile="$perlvar{'lonDaemons'}/logs/lond.pid";
7392:
7393: if (-e $pidfile) {
7394: my $lfh=IO::File->new("$pidfile");
7395: my $pide=<$lfh>;
7396: chomp($pide);
1.29 harris41 7397: if (kill 0 => $pide) { die "already running"; }
1.19 www 7398: }
1.1 albertel 7399:
7400: # ------------------------------------------------------------- Read hosts file
7401:
7402:
7403:
7404: # establish SERVER socket, bind and listen.
7405: $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},
7406: Type => SOCK_STREAM,
7407: Proto => 'tcp',
1.469 foxr 7408: ReuseAddr => 1,
1.1 albertel 7409: Listen => 10 )
1.29 harris41 7410: or die "making socket: $@\n";
1.1 albertel 7411:
7412: # --------------------------------------------------------- Do global variables
7413:
7414: # global variables
7415:
1.134 albertel 7416: my %children = (); # keys are current child process IDs
1.1 albertel 7417:
7418: sub REAPER { # takes care of dead children
7419: $SIG{CHLD} = \&REAPER;
1.165 albertel 7420: &status("Handling child death");
1.178 foxr 7421: my $pid;
7422: do {
7423: $pid = waitpid(-1,&WNOHANG());
7424: if (defined($children{$pid})) {
7425: &logthis("Child $pid died");
7426: delete($children{$pid});
1.183 albertel 7427: } elsif ($pid > 0) {
1.178 foxr 7428: &logthis("Unknown Child $pid died");
7429: }
7430: } while ( $pid > 0 );
7431: foreach my $child (keys(%children)) {
7432: $pid = waitpid($child,&WNOHANG());
7433: if ($pid > 0) {
7434: &logthis("Child $child - $pid looks like we missed it's death");
7435: delete($children{$pid});
7436: }
1.176 albertel 7437: }
1.165 albertel 7438: &status("Finished Handling child death");
1.1 albertel 7439: }
7440:
7441: sub HUNTSMAN { # signal handler for SIGINT
1.165 albertel 7442: &status("Killing children (INT)");
1.1 albertel 7443: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
7444: kill 'INT' => keys %children;
1.59 www 7445: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.1 albertel 7446: my $execdir=$perlvar{'lonDaemons'};
7447: unlink("$execdir/logs/lond.pid");
1.190 albertel 7448: &logthis("<font color='red'>CRITICAL: Shutting down</font>");
1.165 albertel 7449: &status("Done killing children");
1.1 albertel 7450: exit; # clean up with dignity
7451: }
7452:
7453: sub HUPSMAN { # signal handler for SIGHUP
7454: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
1.165 albertel 7455: &status("Killing children for restart (HUP)");
1.1 albertel 7456: kill 'INT' => keys %children;
1.59 www 7457: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.190 albertel 7458: &logthis("<font color='red'>CRITICAL: Restarting</font>");
1.134 albertel 7459: my $execdir=$perlvar{'lonDaemons'};
1.30 harris41 7460: unlink("$execdir/logs/lond.pid");
1.165 albertel 7461: &status("Restarting self (HUP)");
1.1 albertel 7462: exec("$execdir/lond"); # here we go again
7463: }
7464:
1.144 foxr 7465: #
1.148 foxr 7466: # Reload the Apache daemon's state.
1.150 foxr 7467: # This is done by invoking /home/httpd/perl/apachereload
7468: # a setuid perl script that can be root for us to do this job.
1.148 foxr 7469: #
7470: sub ReloadApache {
1.473 raeburn 7471: # --------------------------- Handle case of another apachereload process (locking)
1.474 raeburn 7472: if (&LONCAPA::try_to_lock('/tmp/lock_apachereload')) {
7473: my $execdir = $perlvar{'lonDaemons'};
7474: my $script = $execdir."/apachereload";
7475: system($script);
7476: unlink('/tmp/lock_apachereload'); # Remove the lock file.
7477: }
1.148 foxr 7478: }
7479:
7480: #
1.144 foxr 7481: # Called in response to a USR2 signal.
7482: # - Reread hosts.tab
7483: # - All children connected to hosts that were removed from hosts.tab
7484: # are killed via SIGINT
7485: # - All children connected to previously existing hosts are sent SIGUSR1
7486: # - Our internal hosts hash is updated to reflect the new contents of
7487: # hosts.tab causing connections from hosts added to hosts.tab to
7488: # now be honored.
7489: #
7490: sub UpdateHosts {
1.165 albertel 7491: &status("Reload hosts.tab");
1.147 foxr 7492: logthis('<font color="blue"> Updating connections </font>');
1.148 foxr 7493: #
7494: # The %children hash has the set of IP's we currently have children
7495: # on. These need to be matched against records in the hosts.tab
7496: # Any ip's no longer in the table get killed off they correspond to
7497: # either dropped or changed hosts. Note that the re-read of the table
7498: # will take care of new and changed hosts as connections come into being.
7499:
1.371 albertel 7500: &Apache::lonnet::reset_hosts_info();
1.532 raeburn 7501: my %active;
1.148 foxr 7502:
1.368 albertel 7503: foreach my $child (keys(%children)) {
1.148 foxr 7504: my $childip = $children{$child};
1.374 albertel 7505: if ($childip ne '127.0.0.1'
7506: && !defined(&Apache::lonnet::get_hosts_from_ip($childip))) {
1.149 foxr 7507: logthis('<font color="blue"> UpdateHosts killing child '
7508: ." $child for ip $childip </font>");
1.148 foxr 7509: kill('INT', $child);
1.149 foxr 7510: } else {
1.532 raeburn 7511: $active{$child} = $childip;
1.149 foxr 7512: logthis('<font color="green"> keeping child for ip '
7513: ." $childip (pid=$child) </font>");
1.148 foxr 7514: }
7515: }
1.532 raeburn 7516:
7517: my %oldconf = %secureconf;
7518: my %connchange;
1.555 raeburn 7519: if (lonssl::Read_Connect_Config(\%secureconf,\%perlvar,\%crlchecked) eq 'ok') {
1.545 raeburn 7520: logthis('<font color="blue"> Reloaded SSL connection rules and cleared CRL checking history </font>');
1.532 raeburn 7521: } else {
1.545 raeburn 7522: logthis('<font color="yellow"> Failed to reload SSL connection rules and clear CRL checking history </font>');
1.532 raeburn 7523: }
7524: if ((ref($oldconf{'connfrom'}) eq 'HASH') && (ref($secureconf{'connfrom'}) eq 'HASH')) {
7525: foreach my $type ('dom','intdom','other') {
7526: if ((($oldconf{'connfrom'}{$type} eq 'no') && ($secureconf{'connfrom'}{$type} eq 'req')) ||
7527: (($oldconf{'connfrom'}{$type} eq 'req') && ($secureconf{'connfrom'}{$type} eq 'no'))) {
7528: $connchange{$type} = 1;
7529: }
7530: }
7531: }
7532: if (keys(%connchange)) {
7533: foreach my $child (keys(%active)) {
7534: my $childip = $active{$child};
7535: if ($childip ne '127.0.0.1') {
7536: my $childhostname = gethostbyaddr(Socket::inet_aton($childip),AF_INET);
7537: if ($childhostname ne '') {
7538: my $childlonhost = &Apache::lonnet::get_server_homeID($childhostname);
7539: my ($samedom,$sameinst) = &set_client_info($childlonhost);
7540: if ($samedom) {
7541: if ($connchange{'dom'}) {
7542: logthis('<font color="blue"> UpdateHosts killing child '
7543: ." $child for ip $childip </font>");
7544: kill('INT', $child);
7545: }
7546: } elsif ($sameinst) {
7547: if ($connchange{'intdom'}) {
7548: logthis('<font color="blue"> UpdateHosts killing child '
7549: ." $child for ip $childip </font>");
7550: kill('INT', $child);
7551: }
7552: } else {
7553: if ($connchange{'other'}) {
7554: logthis('<font color="blue"> UpdateHosts killing child '
7555: ." $child for ip $childip </font>");
7556: kill('INT', $child);
7557: }
7558: }
7559: }
7560: }
7561: }
7562: }
1.148 foxr 7563: ReloadApache;
1.165 albertel 7564: &status("Finished reloading hosts.tab");
1.144 foxr 7565: }
7566:
1.57 www 7567: sub checkchildren {
1.165 albertel 7568: &status("Checking on the children (sending signals)");
1.57 www 7569: &initnewstatus();
7570: &logstatus();
7571: &logthis('Going to check on the children');
1.134 albertel 7572: my $docdir=$perlvar{'lonDocRoot'};
1.61 harris41 7573: foreach (sort keys %children) {
1.221 albertel 7574: #sleep 1;
1.57 www 7575: unless (kill 'USR1' => $_) {
7576: &logthis ('Child '.$_.' is dead');
7577: &logstatus($$.' is dead');
1.221 albertel 7578: delete($children{$_});
1.57 www 7579: }
1.61 harris41 7580: }
1.63 www 7581: sleep 5;
1.212 foxr 7582: $SIG{ALRM} = sub { Debug("timeout");
7583: die "timeout"; };
1.113 albertel 7584: $SIG{__DIE__} = 'DEFAULT';
1.165 albertel 7585: &status("Checking on the children (waiting for reports)");
1.63 www 7586: foreach (sort keys %children) {
7587: unless (-e "$docdir/lon-status/londchld/$_.txt") {
1.113 albertel 7588: eval {
7589: alarm(300);
1.63 www 7590: &logthis('Child '.$_.' did not respond');
1.67 albertel 7591: kill 9 => $_;
1.131 albertel 7592: #$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
7593: #$subj="LON: $currenthostid killed lond process $_";
7594: #my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null`;
7595: #$execdir=$perlvar{'lonDaemons'};
7596: #$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_`;
1.221 albertel 7597: delete($children{$_});
1.113 albertel 7598: alarm(0);
7599: }
1.63 www 7600: }
7601: }
1.113 albertel 7602: $SIG{ALRM} = 'DEFAULT';
1.155 albertel 7603: $SIG{__DIE__} = \&catchexception;
1.165 albertel 7604: &status("Finished checking children");
1.221 albertel 7605: &logthis('Finished Checking children');
1.57 www 7606: }
7607:
1.1 albertel 7608: # --------------------------------------------------------------------- Logging
7609:
7610: sub logthis {
7611: my $message=shift;
7612: my $execdir=$perlvar{'lonDaemons'};
7613: my $fh=IO::File->new(">>$execdir/logs/lond.log");
7614: my $now=time;
7615: my $local=localtime($now);
1.58 www 7616: $lastlog=$local.': '.$message;
1.1 albertel 7617: print $fh "$local ($$): $message\n";
7618: }
7619:
1.77 foxr 7620: # ------------------------- Conditional log if $DEBUG true.
7621: sub Debug {
7622: my $message = shift;
7623: if($DEBUG) {
7624: &logthis($message);
7625: }
7626: }
1.161 foxr 7627:
7628: #
7629: # Sub to do replies to client.. this gives a hook for some
7630: # debug tracing too:
7631: # Parameters:
7632: # fd - File open on client.
7633: # reply - Text to send to client.
7634: # request - Original request from client.
7635: #
1.490 droeschl 7636: #NOTE $reply must be terminated by exactly *one* \n. If $reply is a reference
7637: #this is done automatically ($$reply must not contain any \n in this case).
7638: #If $reply is a string the caller has to ensure this.
1.161 foxr 7639: sub Reply {
1.192 foxr 7640: my ($fd, $reply, $request) = @_;
1.387 albertel 7641: if (ref($reply)) {
7642: print $fd $$reply;
7643: print $fd "\n";
7644: if ($DEBUG) { Debug("Request was $request Reply was $$reply"); }
7645: } else {
7646: print $fd $reply;
7647: if ($DEBUG) { Debug("Request was $request Reply was $reply"); }
7648: }
1.212 foxr 7649: $Transactions++;
7650: }
7651:
7652:
7653: #
7654: # Sub to report a failure.
7655: # This function:
7656: # - Increments the failure statistic counters.
7657: # - Invokes Reply to send the error message to the client.
7658: # Parameters:
7659: # fd - File descriptor open on the client
7660: # reply - Reply text to emit.
7661: # request - The original request message (used by Reply
7662: # to debug if that's enabled.
7663: # Implicit outputs:
7664: # $Failures- The number of failures is incremented.
7665: # Reply (invoked here) sends a message to the
7666: # client:
7667: #
7668: sub Failure {
7669: my $fd = shift;
7670: my $reply = shift;
7671: my $request = shift;
7672:
7673: $Failures++;
7674: Reply($fd, $reply, $request); # That's simple eh?
1.161 foxr 7675: }
1.57 www 7676: # ------------------------------------------------------------------ Log status
7677:
7678: sub logstatus {
1.178 foxr 7679: &status("Doing logging");
7680: my $docdir=$perlvar{'lonDocRoot'};
7681: {
7682: my $fh=IO::File->new(">$docdir/lon-status/londchld/$$.txt");
1.200 matthew 7683: print $fh $status."\n".$lastlog."\n".time."\n$keymode";
1.178 foxr 7684: $fh->close();
7685: }
1.221 albertel 7686: &status("Finished $$.txt");
7687: {
7688: open(LOG,">>$docdir/lon-status/londstatus.txt");
7689: flock(LOG,LOCK_EX);
7690: print LOG $$."\t".$clientname."\t".$currenthostid."\t"
7691: .$status."\t".$lastlog."\t $keymode\n";
1.275 albertel 7692: flock(LOG,LOCK_UN);
1.221 albertel 7693: close(LOG);
7694: }
1.178 foxr 7695: &status("Finished logging");
1.57 www 7696: }
7697:
7698: sub initnewstatus {
7699: my $docdir=$perlvar{'lonDocRoot'};
7700: my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt");
1.460 foxr 7701: my $now=time();
1.57 www 7702: my $local=localtime($now);
7703: print $fh "LOND status $local - parent $$\n\n";
1.64 www 7704: opendir(DIR,"$docdir/lon-status/londchld");
1.134 albertel 7705: while (my $filename=readdir(DIR)) {
1.64 www 7706: unlink("$docdir/lon-status/londchld/$filename");
7707: }
7708: closedir(DIR);
1.57 www 7709: }
7710:
7711: # -------------------------------------------------------------- Status setting
7712:
7713: sub status {
7714: my $what=shift;
7715: my $now=time;
7716: my $local=localtime($now);
1.178 foxr 7717: $status=$local.': '.$what;
7718: $0='lond: '.$what.' '.$local;
1.57 www 7719: }
1.11 www 7720:
1.13 www 7721: # -------------------------------------------------------------- Talk to lonsql
7722:
1.234 foxr 7723: sub sql_reply {
1.12 harris41 7724: my ($cmd)=@_;
1.234 foxr 7725: my $answer=&sub_sql_reply($cmd);
7726: if ($answer eq 'con_lost') { $answer=&sub_sql_reply($cmd); }
1.12 harris41 7727: return $answer;
7728: }
7729:
1.234 foxr 7730: sub sub_sql_reply {
1.12 harris41 7731: my ($cmd)=@_;
7732: my $unixsock="mysqlsock";
7733: my $peerfile="$perlvar{'lonSockDir'}/$unixsock";
7734: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
7735: Type => SOCK_STREAM,
7736: Timeout => 10)
7737: or return "con_lost";
1.319 www 7738: print $sclient "$cmd:$currentdomainid\n";
1.12 harris41 7739: my $answer=<$sclient>;
7740: chomp($answer);
7741: if (!$answer) { $answer="con_lost"; }
7742: return $answer;
7743: }
7744:
1.1 albertel 7745: # --------------------------------------- Is this the home server of an author?
1.11 www 7746:
1.1 albertel 7747: sub ishome {
7748: my $author=shift;
7749: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
7750: my ($udom,$uname)=split(/\//,$author);
7751: my $proname=propath($udom,$uname);
7752: if (-e $proname) {
7753: return 'owner';
7754: } else {
7755: return 'not_owner';
7756: }
7757: }
7758:
7759: # ======================================================= Continue main program
7760: # ---------------------------------------------------- Fork once and dissociate
7761:
1.134 albertel 7762: my $fpid=fork;
1.1 albertel 7763: exit if $fpid;
1.29 harris41 7764: die "Couldn't fork: $!" unless defined ($fpid);
1.1 albertel 7765:
1.29 harris41 7766: POSIX::setsid() or die "Can't start new session: $!";
1.1 albertel 7767:
7768: # ------------------------------------------------------- Write our PID on disk
7769:
1.134 albertel 7770: my $execdir=$perlvar{'lonDaemons'};
1.1 albertel 7771: open (PIDSAVE,">$execdir/logs/lond.pid");
7772: print PIDSAVE "$$\n";
7773: close(PIDSAVE);
1.190 albertel 7774: &logthis("<font color='red'>CRITICAL: ---------- Starting ----------</font>");
1.57 www 7775: &status('Starting');
1.1 albertel 7776:
1.106 foxr 7777:
1.1 albertel 7778:
7779: # ----------------------------------------------------- Install signal handlers
7780:
1.57 www 7781:
1.1 albertel 7782: $SIG{CHLD} = \&REAPER;
7783: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
7784: $SIG{HUP} = \&HUPSMAN;
1.57 www 7785: $SIG{USR1} = \&checkchildren;
1.144 foxr 7786: $SIG{USR2} = \&UpdateHosts;
1.106 foxr 7787:
1.148 foxr 7788: # Read the host hashes:
1.368 albertel 7789: &Apache::lonnet::load_hosts_tab();
1.447 raeburn 7790: my %iphost = &Apache::lonnet::get_iphost(1);
1.106 foxr 7791:
1.480 raeburn 7792: $dist=`$perlvar{'lonDaemons'}/distprobe`;
1.286 albertel 7793:
1.471 raeburn 7794: my $arch = `uname -i`;
1.475 raeburn 7795: chomp($arch);
1.471 raeburn 7796: if ($arch eq 'unknown') {
7797: $arch = `uname -m`;
1.475 raeburn 7798: chomp($arch);
1.471 raeburn 7799: }
7800:
1.555 raeburn 7801: unless (lonssl::Read_Connect_Config(\%secureconf,\%perlvar,\%crlchecked) eq 'ok') {
1.532 raeburn 7802: &logthis('<font color="blue">No connectionrules table. Will fallback to loncapa.conf</font>');
7803: }
7804:
1.106 foxr 7805: # --------------------------------------------------------------
7806: # Accept connections. When a connection comes in, it is validated
7807: # and if good, a child process is created to process transactions
7808: # along the connection.
7809:
1.1 albertel 7810: while (1) {
1.165 albertel 7811: &status('Starting accept');
1.106 foxr 7812: $client = $server->accept() or next;
1.165 albertel 7813: &status('Accepted '.$client.' off to spawn');
1.386 albertel 7814: make_new_child($client);
1.165 albertel 7815: &status('Finished spawning');
1.1 albertel 7816: }
7817:
1.212 foxr 7818: sub make_new_child {
7819: my $pid;
7820: # my $cipher; # Now global
7821: my $sigset;
1.178 foxr 7822:
1.212 foxr 7823: $client = shift;
7824: &status('Starting new child '.$client);
7825: &logthis('<font color="green"> Attempting to start child ('.$client.
7826: ")</font>");
7827: # block signal for fork
7828: $sigset = POSIX::SigSet->new(SIGINT);
7829: sigprocmask(SIG_BLOCK, $sigset)
7830: or die "Can't block SIGINT for fork: $!\n";
1.178 foxr 7831:
1.212 foxr 7832: die "fork: $!" unless defined ($pid = fork);
1.178 foxr 7833:
1.212 foxr 7834: $client->sockopt(SO_KEEPALIVE, 1); # Enable monitoring of
7835: # connection liveness.
1.178 foxr 7836:
1.212 foxr 7837: #
7838: # Figure out who we're talking to so we can record the peer in
7839: # the pid hash.
7840: #
7841: my $caller = getpeername($client);
7842: my ($port,$iaddr);
7843: if (defined($caller) && length($caller) > 0) {
7844: ($port,$iaddr)=unpack_sockaddr_in($caller);
7845: } else {
7846: &logthis("Unable to determine who caller was, getpeername returned nothing");
7847: }
7848: if (defined($iaddr)) {
7849: $clientip = inet_ntoa($iaddr);
7850: Debug("Connected with $clientip");
7851: } else {
7852: &logthis("Unable to determine clientip");
7853: $clientip='Unavailable';
7854: }
7855:
7856: if ($pid) {
7857: # Parent records the child's birth and returns.
7858: sigprocmask(SIG_UNBLOCK, $sigset)
7859: or die "Can't unblock SIGINT for fork: $!\n";
7860: $children{$pid} = $clientip;
7861: &status('Started child '.$pid);
1.462 foxr 7862: close($client);
1.212 foxr 7863: return;
7864: } else {
7865: # Child can *not* return from this subroutine.
7866: $SIG{INT} = 'DEFAULT'; # make SIGINT kill us as it did before
7867: $SIG{CHLD} = 'DEFAULT'; #make this default so that pwauth returns
7868: #don't get intercepted
7869: $SIG{USR1}= \&logstatus;
7870: $SIG{ALRM}= \&timeout;
1.468 foxr 7871: #
7872: # Block sigpipe as it gets thrownon socket disconnect and we want to
7873: # deal with that as a read faiure instead.
7874: #
7875: my $blockset = POSIX::SigSet->new(SIGPIPE);
7876: sigprocmask(SIG_BLOCK, $blockset);
7877:
1.212 foxr 7878: $lastlog='Forked ';
7879: $status='Forked';
1.178 foxr 7880:
1.212 foxr 7881: # unblock signals
7882: sigprocmask(SIG_UNBLOCK, $sigset)
7883: or die "Can't unblock SIGINT for fork: $!\n";
1.178 foxr 7884:
1.212 foxr 7885: # my $tmpsnum=0; # Now global
7886: #---------------------------------------------------- kerberos 5 initialization
7887: &Authen::Krb5::init_context();
1.511 raeburn 7888:
7889: my $no_ets;
1.571 raeburn 7890: if ($dist =~ /^(?:centos|rhes|scientific|oracle|rocky|alma)(\d+)/) {
1.511 raeburn 7891: if ($1 >= 7) {
7892: $no_ets = 1;
7893: }
7894: } elsif ($dist =~ /^suse(\d+\.\d+)$/) {
7895: if (($1 eq '9.3') || ($1 >= 12.2)) {
7896: $no_ets = 1;
7897: }
1.514 raeburn 7898: } elsif ($dist =~ /^sles(\d+)$/) {
7899: if ($1 > 11) {
7900: $no_ets = 1;
7901: }
1.511 raeburn 7902: } elsif ($dist =~ /^fedora(\d+)$/) {
7903: if ($1 < 7) {
7904: $no_ets = 1;
7905: }
7906: }
7907: unless ($no_ets) {
1.286 albertel 7908: &Authen::Krb5::init_ets();
7909: }
1.209 albertel 7910:
1.212 foxr 7911: &status('Accepted connection');
7912: # =============================================================================
7913: # do something with the connection
7914: # -----------------------------------------------------------------------------
7915: # see if we know client and 'check' for spoof IP by ineffective challenge
1.178 foxr 7916:
1.278 albertel 7917: my $outsideip=$clientip;
7918: if ($clientip eq '127.0.0.1') {
1.368 albertel 7919: $outsideip=&Apache::lonnet::get_host_ip($perlvar{'lonHostID'});
1.278 albertel 7920: }
1.412 foxr 7921: &ReadManagerTable();
1.368 albertel 7922: my $clientrec=defined(&Apache::lonnet::get_hosts_from_ip($outsideip));
1.278 albertel 7923: my $ismanager=($managers{$outsideip} ne undef);
1.432 raeburn 7924: $clientname = "[unknown]";
1.212 foxr 7925: if($clientrec) { # Establish client type.
7926: $ConnectionType = "client";
1.368 albertel 7927: $clientname = (&Apache::lonnet::get_hosts_from_ip($outsideip))[-1];
1.212 foxr 7928: if($ismanager) {
7929: $ConnectionType = "both";
7930: }
7931: } else {
7932: $ConnectionType = "manager";
1.278 albertel 7933: $clientname = $managers{$outsideip};
1.212 foxr 7934: }
1.556 raeburn 7935: my $clientok;
1.178 foxr 7936:
1.212 foxr 7937: if ($clientrec || $ismanager) {
7938: &status("Waiting for init from $clientip $clientname");
7939: &logthis('<font color="yellow">INFO: Connection, '.
7940: $clientip.
7941: " ($clientname) connection type = $ConnectionType </font>" );
7942: &status("Connecting $clientip ($clientname))");
7943: my $remotereq=<$client>;
7944: chomp($remotereq);
7945: Debug("Got init: $remotereq");
1.337 albertel 7946:
1.212 foxr 7947: if ($remotereq =~ /^init/) {
7948: &sethost("sethost:$perlvar{'lonHostID'}");
7949: #
7950: # If the remote is attempting a local init... give that a try:
7951: #
1.432 raeburn 7952: (my $i, my $inittype, $clientversion) = split(/:/, $remotereq);
1.492 droeschl 7953: # For LON-CAPA 2.9, the client session will have sent its LON-CAPA
7954: # version when initiating the connection. For LON-CAPA 2.8 and older,
7955: # the version is retrieved from the global %loncaparevs in lonnet.pm.
1.494 droeschl 7956: # $clientversion contains path to keyfile if $inittype eq 'local'
7957: # it's overridden below in this case
1.492 droeschl 7958: $clientversion ||= $Apache::lonnet::loncaparevs{$clientname};
1.209 albertel 7959:
1.212 foxr 7960: # If the connection type is ssl, but I didn't get my
7961: # certificate files yet, then I'll drop back to
7962: # insecure (if allowed).
1.532 raeburn 7963:
7964: if ($inittype eq "ssl") {
7965: my $context;
7966: if ($clientsamedom) {
7967: $context = 'dom';
7968: if ($secureconf{'connfrom'}{'dom'} eq 'no') {
7969: $inittype = "";
7970: }
7971: } elsif ($clientsameinst) {
7972: $context = 'intdom';
7973: if ($secureconf{'connfrom'}{'intdom'} eq 'no') {
7974: $inittype = "";
7975: }
7976: } else {
7977: $context = 'other';
7978: if ($secureconf{'connfrom'}{'other'} eq 'no') {
7979: $inittype = "";
7980: }
7981: }
7982: if ($inittype eq '') {
7983: &logthis("<font color=\"blue\"> Domain config set "
7984: ."to no ssl for $clientname (context: $context)"
7985: ." -- trying insecure auth</font>");
7986: }
7987: }
7988:
1.212 foxr 7989: if($inittype eq "ssl") {
7990: my ($ca, $cert) = lonssl::CertificateFile;
7991: my $kfile = lonssl::KeyFile;
7992: if((!$ca) ||
7993: (!$cert) ||
7994: (!$kfile)) {
7995: $inittype = ""; # This forces insecure attempt.
7996: &logthis("<font color=\"blue\"> Certificates not "
7997: ."installed -- trying insecure auth</font>");
1.224 foxr 7998: } else { # SSL certificates are in place so
1.212 foxr 7999: } # Leave the inittype alone.
8000: }
8001:
8002: if($inittype eq "local") {
1.432 raeburn 8003: $clientversion = $perlvar{'lonVersion'};
1.212 foxr 8004: my $key = LocalConnection($client, $remotereq);
8005: if($key) {
8006: Debug("Got local key $key");
8007: $clientok = 1;
8008: my $cipherkey = pack("H32", $key);
8009: $cipher = new IDEA($cipherkey);
8010: print $client "ok:local\n";
1.442 www 8011: &logthis('<font color="green">'
1.212 foxr 8012: . "Successful local authentication </font>");
8013: $keymode = "local"
1.178 foxr 8014: } else {
1.212 foxr 8015: Debug("Failed to get local key");
8016: $clientok = 0;
8017: shutdown($client, 3);
8018: close $client;
1.178 foxr 8019: }
1.212 foxr 8020: } elsif ($inittype eq "ssl") {
1.532 raeburn 8021: my $key = SSLConnection($client,$clientname);
1.212 foxr 8022: if ($key) {
8023: $clientok = 1;
8024: my $cipherkey = pack("H32", $key);
8025: $cipher = new IDEA($cipherkey);
8026: &logthis('<font color="green">'
8027: ."Successfull ssl authentication with $clientname </font>");
8028: $keymode = "ssl";
8029:
1.178 foxr 8030: } else {
1.212 foxr 8031: $clientok = 0;
8032: close $client;
1.178 foxr 8033: }
1.212 foxr 8034:
8035: } else {
8036: my $ok = InsecureConnection($client);
8037: if($ok) {
8038: $clientok = 1;
8039: &logthis('<font color="green">'
8040: ."Successful insecure authentication with $clientname </font>");
8041: print $client "ok\n";
8042: $keymode = "insecure";
1.178 foxr 8043: } else {
1.212 foxr 8044: &logthis('<font color="yellow">'
8045: ."Attempted insecure connection disallowed </font>");
8046: close $client;
8047: $clientok = 0;
1.178 foxr 8048: }
8049: }
1.212 foxr 8050: } else {
8051: &logthis(
8052: "<font color='blue'>WARNING: "
8053: ."$clientip failed to initialize: >$remotereq< </font>");
8054: &status('No init '.$clientip);
8055: }
8056: } else {
8057: &logthis(
8058: "<font color='blue'>WARNING: Unknown client $clientip</font>");
8059: &status('Hung up on '.$clientip);
8060: }
8061:
8062: if ($clientok) {
8063: # ---------------- New known client connecting, could mean machine online again
1.368 albertel 8064: if (&Apache::lonnet::get_host_ip($currenthostid) ne $clientip
1.367 albertel 8065: && $clientip ne '127.0.0.1') {
1.375 albertel 8066: &Apache::lonnet::reconlonc($clientname);
1.212 foxr 8067: }
8068: &logthis("<font color='green'>Established connection: $clientname</font>");
8069: &status('Will listen to '.$clientname);
8070: # ------------------------------------------------------------ Process requests
8071: my $keep_going = 1;
8072: my $user_input;
1.556 raeburn 8073:
1.212 foxr 8074: while(($user_input = get_request) && $keep_going) {
8075: alarm(120);
8076: Debug("Main: Got $user_input\n");
8077: $keep_going = &process_request($user_input);
1.178 foxr 8078: alarm(0);
1.569 raeburn 8079: &status('Listening to '.$clientname." ($keymode)");
1.161 foxr 8080: }
1.212 foxr 8081:
1.59 www 8082: # --------------------------------------------- client unknown or fishy, refuse
1.212 foxr 8083: } else {
1.161 foxr 8084: print $client "refused\n";
8085: $client->close();
1.190 albertel 8086: &logthis("<font color='blue'>WARNING: "
1.161 foxr 8087: ."Rejected client $clientip, closing connection</font>");
8088: }
1.525 raeburn 8089: }
1.161 foxr 8090:
1.1 albertel 8091: # =============================================================================
1.161 foxr 8092:
1.190 albertel 8093: &logthis("<font color='red'>CRITICAL: "
1.161 foxr 8094: ."Disconnect from $clientip ($clientname)</font>");
1.569 raeburn 8095:
8096:
1.161 foxr 8097: # this exit is VERY important, otherwise the child will become
8098: # a producer of more and more children, forking yourself into
8099: # process death.
8100: exit;
1.106 foxr 8101:
1.78 foxr 8102: }
1.532 raeburn 8103:
8104: #
8105: # Used to determine if a particular client is from the same domain
1.556 raeburn 8106: # as the current server, or from the same internet domain, and
8107: # also if the client can host sessions for the domain's users.
8108: # A hash is populated with keys set to commands sent by the client
8109: # which may not be executed for this domain.
1.532 raeburn 8110: #
8111: # Optional input -- the client to check for domain and internet domain.
8112: # If not specified, defaults to the package variable: $clientname
8113: #
8114: # If called in array context will not set package variables, but will
8115: # instead return an array of two values - (a) true if client is in the
1.556 raeburn 8116: # same domain as the server, and (b) true if client is in the same
8117: # internet domain.
1.532 raeburn 8118: #
8119: # If called in scalar context, sets package variables for current client:
8120: #
1.556 raeburn 8121: # $clienthomedom - LonCAPA domain of homeID for client.
8122: # $clientsamedom - LonCAPA domain same for this host and client.
8123: # $clientintdom - LonCAPA "internet domain" for client.
8124: # $clientsameinst - LonCAPA "internet domain" same for this host & client.
8125: # $clientremoteok - If current domain permits hosting on this client: 1
8126: # %clientprohibited - Commands prohibited for domain's users for this client.
8127: #
8128: # if the host and client have the same "internet domain", then the value
8129: # of $clientremoteok is not used, and no commands are prohibited.
1.532 raeburn 8130: #
8131: # returns 1 to indicate package variables have been set for current client.
8132: #
8133:
8134: sub set_client_info {
8135: my ($lonhost) = @_;
8136: $lonhost ||= $clientname;
8137: my $clienthost = &Apache::lonnet::hostname($lonhost);
8138: my $clientserverhomeID = &Apache::lonnet::get_server_homeID($clienthost);
8139: my $homedom = &Apache::lonnet::host_domain($clientserverhomeID);
8140: my $samedom = 0;
1.557 raeburn 8141: if ($perlvar{'lonDefDomain'} eq $homedom) {
1.532 raeburn 8142: $samedom = 1;
8143: }
8144: my $intdom = &Apache::lonnet::internet_dom($clientserverhomeID);
8145: my $sameinst = 0;
8146: if ($intdom ne '') {
8147: my $internet_names = &Apache::lonnet::get_internet_names($currenthostid);
8148: if (ref($internet_names) eq 'ARRAY') {
8149: if (grep(/^\Q$intdom\E$/,@{$internet_names})) {
8150: $sameinst = 1;
8151: }
8152: }
8153: }
8154: if (wantarray) {
8155: return ($samedom,$sameinst);
8156: } else {
8157: $clienthomedom = $homedom;
8158: $clientsamedom = $samedom;
8159: $clientintdom = $intdom;
8160: $clientsameinst = $sameinst;
1.556 raeburn 8161: if ($clientsameinst) {
8162: undef($clientremoteok);
8163: undef(%clientprohibited);
8164: } else {
8165: $clientremoteok = &get_remote_hostable($currentdomainid);
8166: %clientprohibited = &get_prohibited($currentdomainid);
8167: }
1.532 raeburn 8168: return 1;
8169: }
8170: }
8171:
1.261 foxr 8172: #
8173: # Determine if a user is an author for the indicated domain.
8174: #
8175: # Parameters:
8176: # domain - domain to check in .
8177: # user - Name of user to check.
8178: #
8179: # Return:
8180: # 1 - User is an author for domain.
8181: # 0 - User is not an author for domain.
8182: sub is_author {
8183: my ($domain, $user) = @_;
8184:
8185: &Debug("is_author: $user @ $domain");
8186:
8187: my $hashref = &tie_user_hash($domain, $user, "roles",
8188: &GDBM_READER());
8189:
8190: # Author role should show up as a key /domain/_au
1.78 foxr 8191:
1.321 albertel 8192: my $value;
1.487 foxr 8193: if ($hashref) {
1.78 foxr 8194:
1.487 foxr 8195: my $key = "/$domain/_au";
8196: if (defined($hashref)) {
8197: $value = $hashref->{$key};
8198: if(!untie_user_hash($hashref)) {
8199: return 'error: ' . ($!+0)." untie (GDBM) Failed";
8200: }
8201: }
8202:
8203: if(defined($value)) {
8204: &Debug("$user @ $domain is an author");
8205: }
8206: } else {
8207: return 'error: '.($!+0)." tie (GDBM) Failed";
1.261 foxr 8208: }
8209:
8210: return defined($value);
8211: }
1.78 foxr 8212: #
8213: # Checks to see if the input roleput request was to set
1.482 www 8214: # an author role. If so, creates construction space
1.78 foxr 8215: # Parameters:
8216: # request - The request sent to the rolesput subchunk.
8217: # We're looking for /domain/_au
8218: # domain - The domain in which the user is having roles doctored.
8219: # user - Name of the user for which the role is being put.
8220: # authtype - The authentication type associated with the user.
8221: #
1.289 albertel 8222: sub manage_permissions {
1.192 foxr 8223: my ($request, $domain, $user, $authtype) = @_;
1.78 foxr 8224: # See if the request is of the form /$domain/_au
1.289 albertel 8225: if($request =~ /^(\/\Q$domain\E\/_au)$/) { # It's an author rolesput...
1.484 raeburn 8226: my $path=$perlvar{'lonDocRoot'}."/priv/$domain";
1.482 www 8227: unless (-e $path) {
8228: mkdir($path);
8229: }
8230: unless (-e $path.'/'.$user) {
8231: mkdir($path.'/'.$user);
8232: }
1.78 foxr 8233: }
8234: }
1.222 foxr 8235:
8236:
8237: #
8238: # Return the full path of a user password file, whether it exists or not.
8239: # Parameters:
8240: # domain - Domain in which the password file lives.
8241: # user - name of the user.
8242: # Returns:
8243: # Full passwd path:
8244: #
8245: sub password_path {
8246: my ($domain, $user) = @_;
1.264 albertel 8247: return &propath($domain, $user).'/passwd';
1.222 foxr 8248: }
8249:
8250: # Password Filename
8251: # Returns the path to a passwd file given domain and user... only if
8252: # it exists.
8253: # Parameters:
8254: # domain - Domain in which to search.
8255: # user - username.
8256: # Returns:
8257: # - If the password file exists returns its path.
8258: # - If the password file does not exist, returns undefined.
8259: #
8260: sub password_filename {
8261: my ($domain, $user) = @_;
8262:
8263: Debug ("PasswordFilename called: dom = $domain user = $user");
8264:
8265: my $path = &password_path($domain, $user);
8266: Debug("PasswordFilename got path: $path");
8267: if(-e $path) {
8268: return $path;
8269: } else {
8270: return undef;
8271: }
8272: }
8273:
8274: #
8275: # Rewrite the contents of the user's passwd file.
8276: # Parameters:
8277: # domain - domain of the user.
8278: # name - User's name.
8279: # contents - New contents of the file.
1.533 raeburn 8280: # saveold - (optional). If true save old file in a passwd.bak file.
1.222 foxr 8281: # Returns:
8282: # 0 - Failed.
8283: # 1 - Success.
8284: #
8285: sub rewrite_password_file {
1.533 raeburn 8286: my ($domain, $user, $contents, $saveold) = @_;
1.222 foxr 8287:
8288: my $file = &password_filename($domain, $user);
8289: if (defined $file) {
1.533 raeburn 8290: if ($saveold) {
8291: my $bakfile = $file.'.bak';
8292: if (CopyFile($file,$bakfile)) {
8293: chmod(0400,$bakfile);
8294: &logthis("Old password saved in passwd.bak for internally authenticated user: $user:$domain");
8295: } else {
8296: &logthis("Failed to save old password in passwd.bak for internally authenticated user: $user:$domain");
8297: }
8298: }
1.222 foxr 8299: my $pf = IO::File->new(">$file");
8300: if($pf) {
8301: print $pf "$contents\n";
8302: return 1;
8303: } else {
8304: return 0;
8305: }
8306: } else {
8307: return 0;
8308: }
8309:
8310: }
8311:
1.78 foxr 8312: #
1.222 foxr 8313: # get_auth_type - Determines the authorization type of a user in a domain.
1.78 foxr 8314:
8315: # Returns the authorization type or nouser if there is no such user.
8316: #
1.436 raeburn 8317: sub get_auth_type {
1.192 foxr 8318: my ($domain, $user) = @_;
1.78 foxr 8319:
1.222 foxr 8320: Debug("get_auth_type( $domain, $user ) \n");
1.78 foxr 8321: my $proname = &propath($domain, $user);
8322: my $passwdfile = "$proname/passwd";
8323: if( -e $passwdfile ) {
8324: my $pf = IO::File->new($passwdfile);
8325: my $realpassword = <$pf>;
8326: chomp($realpassword);
1.79 foxr 8327: Debug("Password info = $realpassword\n");
1.78 foxr 8328: my ($authtype, $contentpwd) = split(/:/, $realpassword);
1.79 foxr 8329: Debug("Authtype = $authtype, content = $contentpwd\n");
1.259 raeburn 8330: return "$authtype:$contentpwd";
1.224 foxr 8331: } else {
1.79 foxr 8332: Debug("Returning nouser");
1.78 foxr 8333: return "nouser";
8334: }
1.1 albertel 8335: }
8336:
1.220 foxr 8337: #
8338: # Validate a user given their domain, name and password. This utility
8339: # function is used by both AuthenticateHandler and ChangePasswordHandler
8340: # to validate the login credentials of a user.
8341: # Parameters:
8342: # $domain - The domain being logged into (this is required due to
8343: # the capability for multihomed systems.
8344: # $user - The name of the user being validated.
8345: # $password - The user's propoposed password.
8346: #
8347: # Returns:
8348: # 1 - The domain,user,pasword triplet corresponds to a valid
8349: # user.
8350: # 0 - The domain,user,password triplet is not a valid user.
8351: #
8352: sub validate_user {
1.396 raeburn 8353: my ($domain, $user, $password, $checkdefauth) = @_;
1.220 foxr 8354:
8355: # Why negative ~pi you may well ask? Well this function is about
8356: # authentication, and therefore very important to get right.
8357: # I've initialized the flag that determines whether or not I've
8358: # validated correctly to a value it's not supposed to get.
8359: # At the end of this function. I'll ensure that it's not still that
8360: # value so we don't just wind up returning some accidental value
8361: # as a result of executing an unforseen code path that
1.249 foxr 8362: # did not set $validated. At the end of valid execution paths,
8363: # validated shoule be 1 for success or 0 for failuer.
1.220 foxr 8364:
8365: my $validated = -3.14159;
8366:
8367: # How we authenticate is determined by the type of authentication
8368: # the user has been assigned. If the authentication type is
8369: # "nouser", the user does not exist so we will return 0.
8370:
1.222 foxr 8371: my $contents = &get_auth_type($domain, $user);
1.220 foxr 8372: my ($howpwd, $contentpwd) = split(/:/, $contents);
8373:
8374: my $null = pack("C",0); # Used by kerberos auth types.
8375:
1.395 raeburn 8376: if ($howpwd eq 'nouser') {
1.396 raeburn 8377: if ($checkdefauth) {
8378: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
8379: if ($domdefaults{'auth_def'} eq 'localauth') {
8380: $howpwd = $domdefaults{'auth_def'};
8381: $contentpwd = $domdefaults{'auth_arg_def'};
8382: } elsif ((($domdefaults{'auth_def'} eq 'krb4') ||
8383: ($domdefaults{'auth_def'} eq 'krb5')) &&
8384: ($domdefaults{'auth_arg_def'} ne '')) {
8385: $howpwd = $domdefaults{'auth_def'};
8386: $contentpwd = $domdefaults{'auth_arg_def'};
8387: }
1.395 raeburn 8388: }
1.533 raeburn 8389: }
1.220 foxr 8390: if ($howpwd ne 'nouser') {
8391: if($howpwd eq "internal") { # Encrypted is in local password file.
1.518 raeburn 8392: if (length($contentpwd) == 13) {
8393: $validated = (crypt($password,$contentpwd) eq $contentpwd);
8394: if ($validated) {
1.533 raeburn 8395: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
8396: if ($domdefaults{'intauth_switch'}) {
8397: my $ncpass = &hash_passwd($domain,$password);
8398: my $saveold;
8399: if ($domdefaults{'intauth_switch'} == 2) {
8400: $saveold = 1;
8401: }
8402: if (&rewrite_password_file($domain,$user,"$howpwd:$ncpass",$saveold)) {
8403: &update_passwd_history($user,$domain,$howpwd,'conversion');
8404: &logthis("Validated password hashed with bcrypt for $user:$domain");
8405: }
1.518 raeburn 8406: }
8407: }
8408: } else {
1.533 raeburn 8409: $validated = &check_internal_passwd($password,$contentpwd,$domain,$user);
1.518 raeburn 8410: }
1.220 foxr 8411: }
8412: elsif ($howpwd eq "unix") { # User is a normal unix user.
8413: $contentpwd = (getpwnam($user))[1];
8414: if($contentpwd) {
8415: if($contentpwd eq 'x') { # Shadow password file...
8416: my $pwauth_path = "/usr/local/sbin/pwauth";
8417: open PWAUTH, "|$pwauth_path" or
8418: die "Cannot invoke authentication";
8419: print PWAUTH "$user\n$password\n";
8420: close PWAUTH;
8421: $validated = ! $?;
8422:
8423: } else { # Passwords in /etc/passwd.
8424: $validated = (crypt($password,
8425: $contentpwd) eq $contentpwd);
8426: }
8427: } else {
8428: $validated = 0;
8429: }
1.439 raeburn 8430: } elsif ($howpwd eq "krb4") { # user is in kerberos 4 auth. domain.
8431: my $checkwithkrb5 = 0;
8432: if ($dist =~/^fedora(\d+)$/) {
8433: if ($1 > 11) {
8434: $checkwithkrb5 = 1;
8435: }
8436: } elsif ($dist =~ /^suse([\d.]+)$/) {
8437: if ($1 > 11.1) {
8438: $checkwithkrb5 = 1;
8439: }
8440: }
8441: if ($checkwithkrb5) {
8442: $validated = &krb5_authen($password,$null,$user,$contentpwd);
8443: } else {
8444: $validated = &krb4_authen($password,$null,$user,$contentpwd);
8445: }
1.224 foxr 8446: } elsif ($howpwd eq "krb5") { # User is in kerberos 5 auth. domain.
1.439 raeburn 8447: $validated = &krb5_authen($password,$null,$user,$contentpwd);
1.224 foxr 8448: } elsif ($howpwd eq "localauth") {
1.220 foxr 8449: # Authenticate via installation specific authentcation method:
8450: $validated = &localauth::localauth($user,
8451: $password,
1.353 albertel 8452: $contentpwd,
8453: $domain);
1.358 albertel 8454: if ($validated < 0) {
1.357 albertel 8455: &logthis("localauth for $contentpwd $user:$domain returned a $validated");
8456: $validated = 0;
8457: }
1.224 foxr 8458: } else { # Unrecognized auth is also bad.
1.220 foxr 8459: $validated = 0;
8460: }
8461: } else {
8462: $validated = 0;
8463: }
8464: #
8465: # $validated has the correct stat of the authentication:
8466: #
8467:
8468: unless ($validated != -3.14159) {
1.249 foxr 8469: # I >really really< want to know if this happens.
8470: # since it indicates that user authentication is badly
8471: # broken in some code path.
8472: #
8473: die "ValidateUser - failed to set the value of validated $domain, $user $password";
1.220 foxr 8474: }
8475: return $validated;
8476: }
8477:
1.518 raeburn 8478: sub check_internal_passwd {
1.533 raeburn 8479: my ($plainpass,$stored,$domain,$user) = @_;
1.518 raeburn 8480: my (undef,$method,@rest) = split(/!/,$stored);
1.533 raeburn 8481: if ($method eq 'bcrypt') {
1.518 raeburn 8482: my $result = &hash_passwd($domain,$plainpass,@rest);
8483: if ($result ne $stored) {
8484: return 0;
8485: }
1.533 raeburn 8486: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
8487: if ($domdefaults{'intauth_check'}) {
8488: # Upgrade to a larger number of rounds if necessary
8489: my $defaultcost = $domdefaults{'intauth_cost'};
8490: if (($defaultcost eq '') || ($defaultcost =~ /D/)) {
8491: $defaultcost = 10;
8492: }
8493: if (int($rest[0])<int($defaultcost)) {
8494: if ($domdefaults{'intauth_check'} == 1) {
8495: my $ncpass = &hash_passwd($domain,$plainpass);
8496: if (&rewrite_password_file($domain,$user,"internal:$ncpass")) {
8497: &update_passwd_history($user,$domain,'internal','update cost');
8498: &logthis("Validated password hashed with bcrypt for $user:$domain");
8499: }
8500: return 1;
8501: } elsif ($domdefaults{'intauth_check'} == 2) {
8502: return 0;
8503: }
8504: }
8505: } else {
8506: return 1;
1.518 raeburn 8507: }
8508: }
8509: return 0;
8510: }
8511:
8512: sub get_last_authchg {
8513: my ($domain,$user) = @_;
8514: my $lastmod;
8515: my $logname = &propath($domain,$user).'/passwd.log';
8516: if (-e "$logname") {
8517: $lastmod = (stat("$logname"))[9];
8518: }
8519: return $lastmod;
8520: }
8521:
1.439 raeburn 8522: sub krb4_authen {
8523: my ($password,$null,$user,$contentpwd) = @_;
8524: my $validated = 0;
8525: if (!($password =~ /$null/) ) { # Null password not allowed.
8526: eval {
8527: require Authen::Krb4;
8528: };
8529: if (!$@) {
8530: my $k4error = &Authen::Krb4::get_pw_in_tkt($user,
8531: "",
8532: $contentpwd,,
8533: 'krbtgt',
8534: $contentpwd,
8535: 1,
8536: $password);
8537: if(!$k4error) {
8538: $validated = 1;
8539: } else {
8540: $validated = 0;
8541: &logthis('krb4: '.$user.', '.$contentpwd.', '.
8542: &Authen::Krb4::get_err_txt($Authen::Krb4::error));
8543: }
8544: } else {
8545: $validated = krb5_authen($password,$null,$user,$contentpwd);
8546: }
8547: }
8548: return $validated;
8549: }
8550:
8551: sub krb5_authen {
8552: my ($password,$null,$user,$contentpwd) = @_;
8553: my $validated = 0;
8554: if(!($password =~ /$null/)) { # Null password not allowed.
8555: my $krbclient = &Authen::Krb5::parse_name($user.'@'
8556: .$contentpwd);
8557: my $krbservice = "krbtgt/".$contentpwd."\@".$contentpwd;
8558: my $krbserver = &Authen::Krb5::parse_name($krbservice);
8559: my $credentials= &Authen::Krb5::cc_default();
8560: $credentials->initialize(&Authen::Krb5::parse_name($user.'@'
8561: .$contentpwd));
8562: my $krbreturn;
8563: if (exists(&Authen::Krb5::get_init_creds_password)) {
8564: $krbreturn =
8565: &Authen::Krb5::get_init_creds_password($krbclient,$password,
8566: $krbservice);
8567: $validated = (ref($krbreturn) eq 'Authen::Krb5::Creds');
8568: } else {
8569: $krbreturn =
8570: &Authen::Krb5::get_in_tkt_with_password($krbclient,$krbserver,
8571: $password,$credentials);
8572: $validated = ($krbreturn == 1);
8573: }
8574: if (!$validated) {
8575: &logthis('krb5: '.$user.', '.$contentpwd.', '.
8576: &Authen::Krb5::error());
8577: }
8578: }
8579: return $validated;
8580: }
1.220 foxr 8581:
1.84 albertel 8582: sub addline {
8583: my ($fname,$hostid,$ip,$newline)=@_;
8584: my $contents;
8585: my $found=0;
1.355 albertel 8586: my $expr='^'.quotemeta($hostid).':'.quotemeta($ip).':';
1.134 albertel 8587: my $sh;
1.84 albertel 8588: if ($sh=IO::File->new("$fname.subscription")) {
8589: while (my $subline=<$sh>) {
8590: if ($subline !~ /$expr/) {$contents.= $subline;} else {$found=1;}
8591: }
8592: $sh->close();
8593: }
8594: $sh=IO::File->new(">$fname.subscription");
8595: if ($contents) { print $sh $contents; }
8596: if ($newline) { print $sh $newline; }
8597: $sh->close();
8598: return $found;
1.86 www 8599: }
8600:
1.234 foxr 8601: sub get_chat {
1.324 raeburn 8602: my ($cdom,$cname,$udom,$uname,$group)=@_;
1.310 albertel 8603:
1.87 www 8604: my @entries=();
1.324 raeburn 8605: my $namespace = 'nohist_chatroom';
8606: my $namespace_inroom = 'nohist_inchatroom';
1.335 albertel 8607: if ($group ne '') {
1.324 raeburn 8608: $namespace .= '_'.$group;
8609: $namespace_inroom .= '_'.$group;
8610: }
8611: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 8612: &GDBM_READER());
8613: if ($hashref) {
8614: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.311 albertel 8615: &untie_user_hash($hashref);
1.123 www 8616: }
1.124 www 8617: my @participants=();
1.134 albertel 8618: my $cutoff=time-60;
1.324 raeburn 8619: $hashref = &tie_user_hash($cdom, $cname, $namespace_inroom,
1.310 albertel 8620: &GDBM_WRCREAT());
8621: if ($hashref) {
8622: $hashref->{$uname.':'.$udom}=time;
8623: foreach my $user (sort(keys(%$hashref))) {
8624: if ($hashref->{$user}>$cutoff) {
8625: push(@participants, 'active_participant:'.$user);
1.123 www 8626: }
8627: }
1.311 albertel 8628: &untie_user_hash($hashref);
1.86 www 8629: }
1.124 www 8630: return (@participants,@entries);
1.86 www 8631: }
8632:
1.234 foxr 8633: sub chat_add {
1.324 raeburn 8634: my ($cdom,$cname,$newchat,$group)=@_;
1.88 albertel 8635: my @entries=();
1.142 www 8636: my $time=time;
1.324 raeburn 8637: my $namespace = 'nohist_chatroom';
8638: my $logfile = 'chatroom.log';
1.335 albertel 8639: if ($group ne '') {
1.324 raeburn 8640: $namespace .= '_'.$group;
8641: $logfile = 'chatroom_'.$group.'.log';
8642: }
8643: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 8644: &GDBM_WRCREAT());
8645: if ($hashref) {
8646: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.88 albertel 8647: my ($lastid)=($entries[$#entries]=~/^(\w+)\:/);
8648: my ($thentime,$idnum)=split(/\_/,$lastid);
8649: my $newid=$time.'_000000';
8650: if ($thentime==$time) {
8651: $idnum=~s/^0+//;
8652: $idnum++;
8653: $idnum=substr('000000'.$idnum,-6,6);
8654: $newid=$time.'_'.$idnum;
8655: }
1.310 albertel 8656: $hashref->{$newid}=$newchat;
1.88 albertel 8657: my $expired=$time-3600;
1.310 albertel 8658: foreach my $comment (keys(%$hashref)) {
8659: my ($thistime) = ($comment=~/(\d+)\_/);
1.88 albertel 8660: if ($thistime<$expired) {
1.310 albertel 8661: delete $hashref->{$comment};
1.88 albertel 8662: }
8663: }
1.310 albertel 8664: {
8665: my $proname=&propath($cdom,$cname);
1.324 raeburn 8666: if (open(CHATLOG,">>$proname/$logfile")) {
1.310 albertel 8667: print CHATLOG ("$time:".&unescape($newchat)."\n");
8668: }
8669: close(CHATLOG);
1.142 www 8670: }
1.311 albertel 8671: &untie_user_hash($hashref);
1.86 www 8672: }
1.84 albertel 8673: }
8674:
8675: sub unsub {
8676: my ($fname,$clientip)=@_;
8677: my $result;
1.188 foxr 8678: my $unsubs = 0; # Number of successful unsubscribes:
8679:
8680:
8681: # An old way subscriptions were handled was to have a
8682: # subscription marker file:
8683:
8684: Debug("Attempting unlink of $fname.$clientname");
1.161 foxr 8685: if (unlink("$fname.$clientname")) {
1.188 foxr 8686: $unsubs++; # Successful unsub via marker file.
8687: }
8688:
8689: # The more modern way to do it is to have a subscription list
8690: # file:
8691:
1.84 albertel 8692: if (-e "$fname.subscription") {
1.161 foxr 8693: my $found=&addline($fname,$clientname,$clientip,'');
1.188 foxr 8694: if ($found) {
8695: $unsubs++;
8696: }
8697: }
8698:
8699: # If either or both of these mechanisms succeeded in unsubscribing a
8700: # resource we can return ok:
8701:
8702: if($unsubs) {
8703: $result = "ok\n";
1.84 albertel 8704: } else {
1.188 foxr 8705: $result = "not_subscribed\n";
1.84 albertel 8706: }
1.188 foxr 8707:
1.84 albertel 8708: return $result;
8709: }
8710:
1.101 www 8711: sub currentversion {
8712: my $fname=shift;
8713: my $version=-1;
8714: my $ulsdir='';
8715: if ($fname=~/^(.+)\/[^\/]+$/) {
8716: $ulsdir=$1;
8717: }
1.114 albertel 8718: my ($fnamere1,$fnamere2);
8719: # remove version if already specified
1.101 www 8720: $fname=~s/\.\d+\.(\w+(?:\.meta)*)$/\.$1/;
1.114 albertel 8721: # get the bits that go before and after the version number
8722: if ( $fname=~/^(.*\.)(\w+(?:\.meta)*)$/ ) {
8723: $fnamere1=$1;
8724: $fnamere2='.'.$2;
8725: }
1.101 www 8726: if (-e $fname) { $version=1; }
8727: if (-e $ulsdir) {
1.134 albertel 8728: if(-d $ulsdir) {
8729: if (opendir(LSDIR,$ulsdir)) {
8730: my $ulsfn;
8731: while ($ulsfn=readdir(LSDIR)) {
1.101 www 8732: # see if this is a regular file (ignore links produced earlier)
1.134 albertel 8733: my $thisfile=$ulsdir.'/'.$ulsfn;
8734: unless (-l $thisfile) {
1.160 www 8735: if ($thisfile=~/\Q$fnamere1\E(\d+)\Q$fnamere2\E$/) {
1.134 albertel 8736: if ($1>$version) { $version=$1; }
8737: }
8738: }
8739: }
8740: closedir(LSDIR);
8741: $version++;
8742: }
8743: }
8744: }
8745: return $version;
1.101 www 8746: }
8747:
8748: sub thisversion {
8749: my $fname=shift;
8750: my $version=-1;
8751: if ($fname=~/\.(\d+)\.\w+(?:\.meta)*$/) {
8752: $version=$1;
8753: }
8754: return $version;
8755: }
8756:
1.84 albertel 8757: sub subscribe {
8758: my ($userinput,$clientip)=@_;
8759: my $result;
1.293 albertel 8760: my ($cmd,$fname)=split(/:/,$userinput,2);
1.84 albertel 8761: my $ownership=&ishome($fname);
8762: if ($ownership eq 'owner') {
1.101 www 8763: # explitly asking for the current version?
8764: unless (-e $fname) {
8765: my $currentversion=¤tversion($fname);
8766: if (&thisversion($fname)==$currentversion) {
8767: if ($fname=~/^(.+)\.\d+\.(\w+(?:\.meta)*)$/) {
8768: my $root=$1;
8769: my $extension=$2;
8770: symlink($root.'.'.$extension,
8771: $root.'.'.$currentversion.'.'.$extension);
1.102 www 8772: unless ($extension=~/\.meta$/) {
8773: symlink($root.'.'.$extension.'.meta',
8774: $root.'.'.$currentversion.'.'.$extension.'.meta');
8775: }
1.101 www 8776: }
8777: }
8778: }
1.84 albertel 8779: if (-e $fname) {
8780: if (-d $fname) {
8781: $result="directory\n";
8782: } else {
1.161 foxr 8783: if (-e "$fname.$clientname") {&unsub($fname,$clientip);}
1.134 albertel 8784: my $now=time;
1.161 foxr 8785: my $found=&addline($fname,$clientname,$clientip,
8786: "$clientname:$clientip:$now\n");
1.84 albertel 8787: if ($found) { $result="$fname\n"; }
8788: # if they were subscribed to only meta data, delete that
8789: # subscription, when you subscribe to a file you also get
8790: # the metadata
8791: unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); }
8792: $fname=~s/\/home\/httpd\/html\/res/raw/;
1.476 raeburn 8793: my $protocol = $Apache::lonnet::protocol{$perlvar{'lonHostID'}};
8794: $protocol = 'http' if ($protocol ne 'https');
8795: $fname=$protocol.'://'.&Apache::lonnet::hostname($perlvar{'lonHostID'})."/".$fname;
1.84 albertel 8796: $result="$fname\n";
8797: }
8798: } else {
8799: $result="not_found\n";
8800: }
8801: } else {
8802: $result="rejected\n";
8803: }
8804: return $result;
8805: }
1.287 foxr 8806: # Change the passwd of a unix user. The caller must have
8807: # first verified that the user is a loncapa user.
8808: #
8809: # Parameters:
8810: # user - Unix user name to change.
8811: # pass - New password for the user.
8812: # Returns:
8813: # ok - if success
8814: # other - Some meaningfule error message string.
8815: # NOTE:
8816: # invokes a setuid script to change the passwd.
8817: sub change_unix_password {
8818: my ($user, $pass) = @_;
8819:
8820: &Debug("change_unix_password");
8821: my $execdir=$perlvar{'lonDaemons'};
8822: &Debug("Opening lcpasswd pipeline");
8823: my $pf = IO::File->new("|$execdir/lcpasswd > "
8824: ."$perlvar{'lonDaemons'}"
8825: ."/logs/lcpasswd.log");
8826: print $pf "$user\n$pass\n$pass\n";
8827: close $pf;
8828: my $err = $?;
8829: return ($err < @passwderrors) ? $passwderrors[$err] :
8830: "pwchange_falure - unknown error";
8831:
8832:
8833: }
8834:
1.91 albertel 8835:
8836: sub make_passwd_file {
1.518 raeburn 8837: my ($uname,$udom,$umode,$npass,$passfilename,$action)=@_;
1.390 raeburn 8838: my $result="ok";
1.91 albertel 8839: if ($umode eq 'krb4' or $umode eq 'krb5') {
8840: {
8841: my $pf = IO::File->new(">$passfilename");
1.261 foxr 8842: if ($pf) {
8843: print $pf "$umode:$npass\n";
1.518 raeburn 8844: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 8845: } else {
8846: $result = "pass_file_failed_error";
8847: }
1.91 albertel 8848: }
8849: } elsif ($umode eq 'internal') {
1.518 raeburn 8850: my $ncpass = &hash_passwd($udom,$npass);
1.91 albertel 8851: {
8852: &Debug("Creating internal auth");
8853: my $pf = IO::File->new(">$passfilename");
1.261 foxr 8854: if($pf) {
1.518 raeburn 8855: print $pf "internal:$ncpass\n";
8856: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 8857: } else {
8858: $result = "pass_file_failed_error";
8859: }
1.91 albertel 8860: }
8861: } elsif ($umode eq 'localauth') {
8862: {
8863: my $pf = IO::File->new(">$passfilename");
1.261 foxr 8864: if($pf) {
8865: print $pf "localauth:$npass\n";
1.524 raeburn 8866: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 8867: } else {
8868: $result = "pass_file_failed_error";
8869: }
1.91 albertel 8870: }
8871: } elsif ($umode eq 'unix') {
1.502 raeburn 8872: &logthis(">>>Attempt to create unix account blocked -- unix auth not available for new users.");
8873: $result="no_new_unix_accounts";
1.91 albertel 8874: } elsif ($umode eq 'none') {
8875: {
1.223 foxr 8876: my $pf = IO::File->new("> $passfilename");
1.261 foxr 8877: if($pf) {
8878: print $pf "none:\n";
8879: } else {
8880: $result = "pass_file_failed_error";
8881: }
1.91 albertel 8882: }
1.543 raeburn 8883: } elsif ($umode eq 'lti') {
8884: my $pf = IO::File->new(">$passfilename");
8885: if($pf) {
8886: print $pf "lti:\n";
8887: &update_passwd_history($uname,$udom,$umode,$action);
8888: } else {
8889: $result = "pass_file_failed_error";
8890: }
1.91 albertel 8891: } else {
1.390 raeburn 8892: $result="auth_mode_error";
1.91 albertel 8893: }
8894: return $result;
1.121 albertel 8895: }
8896:
1.265 albertel 8897: sub convert_photo {
8898: my ($start,$dest)=@_;
8899: system("convert $start $dest");
8900: }
8901:
1.121 albertel 8902: sub sethost {
8903: my ($remotereq) = @_;
8904: my (undef,$hostid)=split(/:/,$remotereq);
1.322 albertel 8905: # ignore sethost if we are already correct
8906: if ($hostid eq $currenthostid) {
8907: return 'ok';
8908: }
8909:
1.121 albertel 8910: if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; }
1.368 albertel 8911: if (&Apache::lonnet::get_host_ip($perlvar{'lonHostID'})
8912: eq &Apache::lonnet::get_host_ip($hostid)) {
1.200 matthew 8913: $currenthostid =$hostid;
1.369 albertel 8914: $currentdomainid=&Apache::lonnet::host_domain($hostid);
1.556 raeburn 8915: &set_client_info();
1.443 www 8916: # &logthis("Setting hostid to $hostid, and domain to $currentdomainid");
1.121 albertel 8917: } else {
8918: &logthis("Requested host id $hostid not an alias of ".
8919: $perlvar{'lonHostID'}." refusing connection");
8920: return 'unable_to_set';
8921: }
8922: return 'ok';
8923: }
8924:
8925: sub version {
8926: my ($userinput)=@_;
8927: $remoteVERSION=(split(/:/,$userinput))[1];
8928: return "version:$VERSION";
1.127 albertel 8929: }
1.178 foxr 8930:
1.447 raeburn 8931: sub get_usersession_config {
8932: my ($dom,$name) = @_;
8933: my ($usersessionconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
8934: if (defined($cached)) {
8935: return $usersessionconf;
8936: } else {
8937: my %domconfig = &Apache::lonnet::get_dom('configuration',['usersessions'],$dom);
1.525 raeburn 8938: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'usersessions'},3600);
8939: return $domconfig{'usersessions'};
1.447 raeburn 8940: }
8941: return;
8942: }
1.200 matthew 8943:
1.534 raeburn 8944: sub get_usersearch_config {
8945: my ($dom,$name) = @_;
8946: my ($usersearchconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
8947: if (defined($cached)) {
8948: return $usersearchconf;
8949: } else {
8950: my %domconfig = &Apache::lonnet::get_dom('configuration',['directorysrch'],$dom);
8951: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'directorysrch'},600);
8952: return $domconfig{'directorysrch'};
8953: }
8954: return;
8955: }
8956:
1.525 raeburn 8957: sub get_prohibited {
8958: my ($dom) = @_;
8959: my $name = 'trust';
8960: my ($trustconfig,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
8961: unless (defined($cached)) {
8962: my %domconfig = &Apache::lonnet::get_dom('configuration',['trust'],$dom);
8963: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'trust'},3600);
8964: $trustconfig = $domconfig{'trust'};
8965: }
8966: my %prohibited;
8967: if (ref($trustconfig)) {
8968: foreach my $prefix (keys(%{$trustconfig})) {
8969: if (ref($trustconfig->{$prefix}) eq 'HASH') {
8970: my $reject;
8971: if (ref($trustconfig->{$prefix}->{'exc'}) eq 'ARRAY') {
8972: if (grep(/^\Q$clientintdom\E$/,@{$trustconfig->{$prefix}->{'exc'}})) {
8973: $reject = 1;
8974: }
8975: }
8976: if (ref($trustconfig->{$prefix}->{'inc'}) eq 'ARRAY') {
8977: if (grep(/^\Q$clientintdom\E$/,@{$trustconfig->{$prefix}->{'inc'}})) {
8978: $reject = 0;
8979: } else {
8980: $reject = 1;
8981: }
8982: }
8983: if ($reject) {
8984: $prohibited{$prefix} = 1;
8985: }
8986: }
8987: }
8988: }
8989: return %prohibited;
8990: }
1.450 raeburn 8991:
1.556 raeburn 8992: sub get_remote_hostable {
8993: my ($dom) = @_;
8994: my $result;
8995: if ($clientintdom) {
8996: $result = 1;
8997: my $remsessconf = &get_usersession_config($dom,'remotesession');
8998: if (ref($remsessconf) eq 'HASH') {
8999: if (ref($remsessconf->{'remote'}) eq 'HASH') {
9000: if (ref($remsessconf->{'remote'}->{'excludedomain'}) eq 'ARRAY') {
9001: if (grep(/^\Q$clientintdom\E$/,@{$remsessconf->{'remote'}->{'excludedomain'}})) {
9002: $result = 0;
9003: }
9004: }
9005: if (ref($remsessconf->{'remote'}->{'includedomain'}) eq 'ARRAY') {
9006: if (grep(/^\Q$clientintdom\E$/,@{$remsessconf->{'remote'}->{'includedomain'}})) {
9007: $result = 1;
9008: } else {
9009: $result = 0;
9010: }
9011: }
9012: }
9013: }
9014: }
9015: return $result;
9016: }
9017:
1.471 raeburn 9018: sub distro_and_arch {
9019: return $dist.':'.$arch;
9020: }
9021:
1.61 harris41 9022: # ----------------------------------- POD (plain old documentation, CPAN style)
9023:
9024: =head1 NAME
9025:
9026: lond - "LON Daemon" Server (port "LOND" 5663)
9027:
9028: =head1 SYNOPSIS
9029:
1.74 harris41 9030: Usage: B<lond>
9031:
9032: Should only be run as user=www. This is a command-line script which
9033: is invoked by B<loncron>. There is no expectation that a typical user
9034: will manually start B<lond> from the command-line. (In other words,
9035: DO NOT START B<lond> YOURSELF.)
1.61 harris41 9036:
9037: =head1 DESCRIPTION
9038:
1.74 harris41 9039: There are two characteristics associated with the running of B<lond>,
9040: PROCESS MANAGEMENT (starting, stopping, handling child processes)
9041: and SERVER-SIDE ACTIVITIES (password authentication, user creation,
9042: subscriptions, etc). These are described in two large
9043: sections below.
9044:
9045: B<PROCESS MANAGEMENT>
9046:
1.61 harris41 9047: Preforker - server who forks first. Runs as a daemon. HUPs.
9048: Uses IDEA encryption
9049:
1.74 harris41 9050: B<lond> forks off children processes that correspond to the other servers
9051: in the network. Management of these processes can be done at the
9052: parent process level or the child process level.
9053:
9054: B<logs/lond.log> is the location of log messages.
9055:
9056: The process management is now explained in terms of linux shell commands,
9057: subroutines internal to this code, and signal assignments:
9058:
9059: =over 4
9060:
9061: =item *
9062:
9063: PID is stored in B<logs/lond.pid>
9064:
9065: This is the process id number of the parent B<lond> process.
9066:
9067: =item *
9068:
9069: SIGTERM and SIGINT
9070:
9071: Parent signal assignment:
9072: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
9073:
9074: Child signal assignment:
9075: $SIG{INT} = 'DEFAULT'; (and SIGTERM is DEFAULT also)
9076: (The child dies and a SIGALRM is sent to parent, awaking parent from slumber
9077: to restart a new child.)
9078:
9079: Command-line invocations:
9080: B<kill> B<-s> SIGTERM I<PID>
9081: B<kill> B<-s> SIGINT I<PID>
9082:
9083: Subroutine B<HUNTSMAN>:
9084: This is only invoked for the B<lond> parent I<PID>.
9085: This kills all the children, and then the parent.
9086: The B<lonc.pid> file is cleared.
9087:
9088: =item *
9089:
9090: SIGHUP
9091:
9092: Current bug:
9093: This signal can only be processed the first time
9094: on the parent process. Subsequent SIGHUP signals
9095: have no effect.
9096:
9097: Parent signal assignment:
9098: $SIG{HUP} = \&HUPSMAN;
9099:
9100: Child signal assignment:
9101: none (nothing happens)
9102:
9103: Command-line invocations:
9104: B<kill> B<-s> SIGHUP I<PID>
9105:
9106: Subroutine B<HUPSMAN>:
9107: This is only invoked for the B<lond> parent I<PID>,
9108: This kills all the children, and then the parent.
9109: The B<lond.pid> file is cleared.
9110:
9111: =item *
9112:
9113: SIGUSR1
9114:
9115: Parent signal assignment:
9116: $SIG{USR1} = \&USRMAN;
9117:
9118: Child signal assignment:
9119: $SIG{USR1}= \&logstatus;
9120:
9121: Command-line invocations:
9122: B<kill> B<-s> SIGUSR1 I<PID>
9123:
9124: Subroutine B<USRMAN>:
9125: When invoked for the B<lond> parent I<PID>,
9126: SIGUSR1 is sent to all the children, and the status of
9127: each connection is logged.
1.144 foxr 9128:
9129: =item *
9130:
9131: SIGUSR2
9132:
9133: Parent Signal assignment:
9134: $SIG{USR2} = \&UpdateHosts
9135:
9136: Child signal assignment:
9137: NONE
9138:
1.74 harris41 9139:
9140: =item *
9141:
9142: SIGCHLD
9143:
9144: Parent signal assignment:
9145: $SIG{CHLD} = \&REAPER;
9146:
9147: Child signal assignment:
9148: none
9149:
9150: Command-line invocations:
9151: B<kill> B<-s> SIGCHLD I<PID>
9152:
9153: Subroutine B<REAPER>:
9154: This is only invoked for the B<lond> parent I<PID>.
9155: Information pertaining to the child is removed.
9156: The socket port is cleaned up.
9157:
9158: =back
9159:
9160: B<SERVER-SIDE ACTIVITIES>
9161:
9162: Server-side information can be accepted in an encrypted or non-encrypted
9163: method.
9164:
9165: =over 4
9166:
9167: =item ping
9168:
9169: Query a client in the hosts.tab table; "Are you there?"
9170:
9171: =item pong
9172:
9173: Respond to a ping query.
9174:
9175: =item ekey
9176:
9177: Read in encrypted key, make cipher. Respond with a buildkey.
9178:
9179: =item load
9180:
9181: Respond with CPU load based on a computation upon /proc/loadavg.
9182:
9183: =item currentauth
9184:
9185: Reply with current authentication information (only over an
9186: encrypted channel).
9187:
9188: =item auth
9189:
9190: Only over an encrypted channel, reply as to whether a user's
9191: authentication information can be validated.
9192:
9193: =item passwd
9194:
9195: Allow for a password to be set.
9196:
9197: =item makeuser
9198:
9199: Make a user.
9200:
1.517 raeburn 9201: =item changeuserauth
1.74 harris41 9202:
9203: Allow for authentication mechanism and password to be changed.
9204:
9205: =item home
1.61 harris41 9206:
1.74 harris41 9207: Respond to a question "are you the home for a given user?"
9208:
9209: =item update
9210:
9211: Update contents of a subscribed resource.
9212:
9213: =item unsubscribe
9214:
9215: The server is unsubscribing from a resource.
9216:
9217: =item subscribe
9218:
9219: The server is subscribing to a resource.
9220:
9221: =item log
9222:
9223: Place in B<logs/lond.log>
9224:
9225: =item put
9226:
9227: stores hash in namespace
9228:
1.496 raeburn 9229: =item rolesput
1.74 harris41 9230:
9231: put a role into a user's environment
9232:
9233: =item get
9234:
9235: returns hash with keys from array
9236: reference filled in from namespace
9237:
9238: =item eget
9239:
9240: returns hash with keys from array
9241: reference filled in from namesp (encrypts the return communication)
9242:
9243: =item rolesget
9244:
9245: get a role from a user's environment
9246:
9247: =item del
9248:
9249: deletes keys out of array from namespace
9250:
9251: =item keys
9252:
9253: returns namespace keys
9254:
9255: =item dump
9256:
9257: dumps the complete (or key matching regexp) namespace into a hash
9258:
9259: =item store
9260:
9261: stores hash permanently
9262: for this url; hashref needs to be given and should be a \%hashname; the
9263: remaining args aren't required and if they aren't passed or are '' they will
9264: be derived from the ENV
9265:
9266: =item restore
9267:
9268: returns a hash for a given url
9269:
9270: =item querysend
9271:
9272: Tells client about the lonsql process that has been launched in response
9273: to a sent query.
9274:
9275: =item queryreply
9276:
9277: Accept information from lonsql and make appropriate storage in temporary
9278: file space.
9279:
9280: =item idput
9281:
9282: Defines usernames as corresponding to IDs. (These "IDs" are unique identifiers
9283: for each student, defined perhaps by the institutional Registrar.)
9284:
9285: =item idget
9286:
9287: Returns usernames corresponding to IDs. (These "IDs" are unique identifiers
9288: for each student, defined perhaps by the institutional Registrar.)
9289:
1.517 raeburn 9290: =item iddel
9291:
9292: Deletes one or more ids in a domain's id database.
9293:
1.74 harris41 9294: =item tmpput
9295:
9296: Accept and store information in temporary space.
9297:
9298: =item tmpget
9299:
9300: Send along temporarily stored information.
9301:
9302: =item ls
9303:
9304: List part of a user's directory.
9305:
1.135 foxr 9306: =item pushtable
9307:
9308: Pushes a file in /home/httpd/lonTab directory. Currently limited to:
9309: hosts.tab and domain.tab. The old file is copied to *.tab.backup but
9310: must be restored manually in case of a problem with the new table file.
9311: pushtable requires that the request be encrypted and validated via
9312: ValidateManager. The form of the command is:
9313: enc:pushtable tablename <tablecontents> \n
9314: where pushtable, tablename and <tablecontents> will be encrypted, but \n is a
9315: cleartext newline.
9316:
1.74 harris41 9317: =item Hanging up (exit or init)
9318:
9319: What to do when a client tells the server that they (the client)
9320: are leaving the network.
9321:
9322: =item unknown command
9323:
9324: If B<lond> is sent an unknown command (not in the list above),
9325: it replys to the client "unknown_cmd".
1.135 foxr 9326:
1.74 harris41 9327:
9328: =item UNKNOWN CLIENT
9329:
9330: If the anti-spoofing algorithm cannot verify the client,
9331: the client is rejected (with a "refused" message sent
9332: to the client, and the connection is closed.
9333:
9334: =back
1.61 harris41 9335:
9336: =head1 PREREQUISITES
9337:
9338: IO::Socket
9339: IO::File
9340: Apache::File
9341: POSIX
9342: Crypt::IDEA
9343: GDBM_File
9344: Authen::Krb4
1.91 albertel 9345: Authen::Krb5
1.61 harris41 9346:
9347: =head1 COREQUISITES
9348:
1.490 droeschl 9349: none
9350:
1.61 harris41 9351: =head1 OSNAMES
9352:
9353: linux
9354:
9355: =head1 SCRIPT CATEGORIES
9356:
9357: Server/Process
9358:
9359: =cut
1.409 foxr 9360:
9361:
9362: =pod
9363:
9364: =head1 LOG MESSAGES
9365:
9366: The messages below can be emitted in the lond log. This log is located
9367: in ~httpd/perl/logs/lond.log Many log messages have HTML encapsulation
9368: to provide coloring if examined from inside a web page. Some do not.
9369: Where color is used, the colors are; Red for sometihhng to get excited
9370: about and to follow up on. Yellow for something to keep an eye on to
9371: be sure it does not get worse, Green,and Blue for informational items.
9372:
9373: In the discussions below, sometimes reference is made to ~httpd
9374: when describing file locations. There isn't really an httpd
9375: user, however there is an httpd directory that gets installed in the
9376: place that user home directories go. On linux, this is usually
9377: (always?) /home/httpd.
9378:
9379:
9380: Some messages are colorless. These are usually (not always)
9381: Green/Blue color level messages.
9382:
9383: =over 2
9384:
9385: =item (Red) LocalConnection rejecting non local: <ip> ne 127.0.0.1
9386:
9387: A local connection negotiation was attempted by
9388: a host whose IP address was not 127.0.0.1.
9389: The socket is closed and the child will exit.
9390: lond has three ways to establish an encyrption
9391: key with a client:
9392:
9393: =over 2
9394:
9395: =item local
9396:
9397: The key is written and read from a file.
9398: This is only valid for connections from localhost.
9399:
9400: =item insecure
9401:
9402: The key is generated by the server and
9403: transmitted to the client.
9404:
9405: =item ssl (secure)
9406:
9407: An ssl connection is negotiated with the client,
9408: the key is generated by the server and sent to the
9409: client across this ssl connection before the
9410: ssl connectionis terminated and clear text
9411: transmission resumes.
9412:
9413: =back
9414:
9415: =item (Red) LocalConnection: caller is insane! init = <init> and type = <type>
9416:
9417: The client is local but has not sent an initialization
9418: string that is the literal "init:local" The connection
9419: is closed and the child exits.
9420:
9421: =item Red CRITICAL Can't get key file <error>
9422:
9423: SSL key negotiation is being attempted but the call to
1.549 raeburn 9424: lonssl::KeyFile failed. This usually means that the
1.409 foxr 9425: configuration file is not correctly defining or protecting
9426: the directories/files lonCertificateDirectory or
9427: lonnetPrivateKey
9428: <error> is a string that describes the reason that
9429: the key file could not be located.
9430:
9431: =item (Red) CRITICAL Can't get certificates <error>
9432:
9433: SSL key negotiation failed because we were not able to retrives our certificate
9434: or the CA's certificate in the call to lonssl::CertificateFile
9435: <error> is the textual reason this failed. Usual reasons:
9436:
9437: =over 2
1.490 droeschl 9438:
1.409 foxr 9439: =item Apache config file for loncapa incorrect:
1.490 droeschl 9440:
1.409 foxr 9441: one of the variables
9442: lonCertificateDirectory, lonnetCertificateAuthority, or lonnetCertificate
9443: undefined or incorrect
9444:
9445: =item Permission error:
9446:
9447: The directory pointed to by lonCertificateDirectory is not readable by lond
9448:
9449: =item Permission error:
9450:
9451: Files in the directory pointed to by lonCertificateDirectory are not readable by lond.
9452:
9453: =item Installation error:
9454:
9455: Either the certificate authority file or the certificate have not
9456: been installed in lonCertificateDirectory.
9457:
9458: =item (Red) CRITICAL SSL Socket promotion failed: <err>
9459:
9460: The promotion of the connection from plaintext to SSL failed
9461: <err> is the reason for the failure. There are two
9462: system calls involved in the promotion (one of which failed),
9463: a dup to produce
9464: a second fd on the raw socket over which the encrypted data
9465: will flow and IO::SOcket::SSL->new_from_fd which creates
9466: the SSL connection on the duped fd.
9467:
9468: =item (Blue) WARNING client did not respond to challenge
9469:
9470: This occurs on an insecure (non SSL) connection negotiation request.
9471: lond generates some number from the time, the PID and sends it to
9472: the client. The client must respond by echoing this information back.
9473: If the client does not do so, that's a violation of the challenge
9474: protocols and the connection will be failed.
9475:
9476: =item (Red) No manager table. Nobody can manage!!
9477:
9478: lond has the concept of privileged hosts that
9479: can perform remote management function such
9480: as update the hosts.tab. The manager hosts
9481: are described in the
9482: ~httpd/lonTabs/managers.tab file.
9483: this message is logged if this file is missing.
9484:
9485:
9486: =item (Green) Registering manager <dnsname> as <cluster_name> with <ipaddress>
9487:
9488: Reports the successful parse and registration
9489: of a specific manager.
9490:
9491: =item Green existing host <clustername:dnsname>
9492:
9493: The manager host is already defined in the hosts.tab
9494: the information in that table, rather than the info in the
9495: manager table will be used to determine the manager's ip.
9496:
9497: =item (Red) Unable to craete <filename>
9498:
9499: lond has been asked to create new versions of an administrative
9500: file (by a manager). When this is done, the new file is created
9501: in a temp file and then renamed into place so that there are always
9502: usable administrative files, even if the update fails. This failure
9503: message means that the temp file could not be created.
9504: The update is abandoned, and the old file is available for use.
9505:
9506: =item (Green) CopyFile from <oldname> to <newname> failed
9507:
9508: In an update of administrative files, the copy of the existing file to a
9509: backup file failed. The installation of the new file may still succeed,
9510: but there will not be a back up file to rever to (this should probably
9511: be yellow).
9512:
9513: =item (Green) Pushfile: backed up <oldname> to <newname>
9514:
9515: See above, the backup of the old administrative file succeeded.
9516:
9517: =item (Red) Pushfile: Unable to install <filename> <reason>
9518:
9519: The new administrative file could not be installed. In this case,
9520: the old administrative file is still in use.
9521:
9522: =item (Green) Installed new < filename>.
9523:
9524: The new administrative file was successfullly installed.
9525:
9526: =item (Red) Reinitializing lond pid=<pid>
9527:
9528: The lonc child process <pid> will be sent a USR2
9529: signal.
9530:
9531: =item (Red) Reinitializing self
9532:
9533: We've been asked to re-read our administrative files,and
9534: are doing so.
9535:
9536: =item (Yellow) error:Invalid process identifier <ident>
9537:
9538: A reinit command was received, but the target part of the
9539: command was not valid. It must be either
9540: 'lond' or 'lonc' but was <ident>
9541:
9542: =item (Green) isValideditCommand checking: Command = <command> Key = <key> newline = <newline>
9543:
9544: Checking to see if lond has been handed a valid edit
9545: command. It is possible the edit command is not valid
9546: in that case there are no log messages to indicate that.
9547:
9548: =item Result of password change for <username> pwchange_success
9549:
9550: The password for <username> was
9551: successfully changed.
9552:
9553: =item Unable to open <user> passwd to change password
9554:
9555: Could not rewrite the
9556: internal password file for a user
9557:
9558: =item Result of password change for <user> : <result>
1.490 droeschl 9559:
1.409 foxr 9560: A unix password change for <user> was attempted
9561: and the pipe returned <result>
9562:
9563: =item LWP GET: <message> for <fname> (<remoteurl>)
9564:
9565: The lightweight process fetch for a resource failed
9566: with <message> the local filename that should
9567: have existed/been created was <fname> the
9568: corresponding URI: <remoteurl> This is emitted in several
9569: places.
9570:
9571: =item Unable to move <transname> to <destname>
9572:
9573: From fetch_user_file_handler - the user file was replicated but could not
9574: be mv'd to its final location.
9575:
9576: =item Looking for <domain> <username>
9577:
9578: From user_has_session_handler - This should be a Debug call instead
9579: it indicates lond is about to check whether the specified user has a
9580: session active on the specified domain on the local host.
9581:
9582: =item Client <ip> (<name>) hanging up: <input>
9583:
9584: lond has been asked to exit by its client. The <ip> and <name> identify the
9585: client systemand <input> is the full exit command sent to the server.
9586:
9587: =item Red CRITICAL: ABNORMAL EXIT. child <pid> for server <hostname> died through a crass with this error->[<message>].
1.490 droeschl 9588:
1.409 foxr 9589: A lond child terminated. NOte that this termination can also occur when the
9590: child receives the QUIT or DIE signals. <pid> is the process id of the child,
9591: <hostname> the host lond is working for, and <message> the reason the child died
9592: to the best of our ability to get it (I would guess that any numeric value
9593: represents and errno value). This is immediately followed by
9594:
9595: =item Famous last words: Catching exception - <log>
9596:
9597: Where log is some recent information about the state of the child.
9598:
9599: =item Red CRITICAL: TIME OUT <pid>
9600:
9601: Some timeout occured for server <pid>. THis is normally a timeout on an LWP
9602: doing an HTTP::GET.
9603:
9604: =item child <pid> died
9605:
9606: The reaper caught a SIGCHILD for the lond child process <pid>
9607: This should be modified to also display the IP of the dying child
9608: $children{$pid}
9609:
9610: =item Unknown child 0 died
9611: A child died but the wait for it returned a pid of zero which really should not
9612: ever happen.
9613:
9614: =item Child <which> - <pid> looks like we missed it's death
9615:
9616: When a sigchild is received, the reaper process checks all children to see if they are
9617: alive. If children are dying quite quickly, the lack of signal queuing can mean
9618: that a signal hearalds the death of more than one child. If so this message indicates
9619: which other one died. <which> is the ip of a dead child
9620:
9621: =item Free socket: <shutdownretval>
9622:
9623: The HUNTSMAN sub was called due to a SIGINT in a child process. The socket is being shutdown.
9624: for whatever reason, <shutdownretval> is printed but in fact shutdown() is not documented
9625: to return anything. This is followed by:
9626:
9627: =item Red CRITICAL: Shutting down
9628:
9629: Just prior to exit.
9630:
9631: =item Free socket: <shutdownretval>
9632:
9633: The HUPSMAN sub was called due to a SIGHUP. all children get killsed, and lond execs itself.
9634: This is followed by:
9635:
9636: =item (Red) CRITICAL: Restarting
9637:
9638: lond is about to exec itself to restart.
9639:
9640: =item (Blue) Updating connections
9641:
9642: (In response to a USR2). All the children (except the one for localhost)
9643: are about to be killed, the hosts tab reread, and Apache reloaded via apachereload.
9644:
9645: =item (Blue) UpdateHosts killing child <pid> for ip <ip>
9646:
9647: Due to USR2 as above.
9648:
9649: =item (Green) keeping child for ip <ip> (pid = <pid>)
9650:
9651: In response to USR2 as above, the child indicated is not being restarted because
9652: it's assumed that we'll always need a child for the localhost.
9653:
9654:
9655: =item Going to check on the children
9656:
9657: Parent is about to check on the health of the child processes.
9658: Note that this is in response to a USR1 sent to the parent lond.
9659: there may be one or more of the next two messages:
9660:
9661: =item <pid> is dead
9662:
9663: A child that we have in our child hash as alive has evidently died.
9664:
9665: =item Child <pid> did not respond
9666:
9667: In the health check the child <pid> did not update/produce a pid_.txt
9668: file when sent it's USR1 signal. That process is killed with a 9 signal, as it's
9669: assumed to be hung in some un-fixable way.
9670:
9671: =item Finished checking children
1.490 droeschl 9672:
1.409 foxr 9673: Master processs's USR1 processing is cojmplete.
9674:
9675: =item (Red) CRITICAL: ------- Starting ------
9676:
9677: (There are more '-'s on either side). Lond has forked itself off to
9678: form a new session and is about to start actual initialization.
9679:
9680: =item (Green) Attempting to start child (<client>)
9681:
9682: Started a new child process for <client>. Client is IO::Socket object
9683: connected to the child. This was as a result of a TCP/IP connection from a client.
9684:
9685: =item Unable to determine who caller was, getpeername returned nothing
1.490 droeschl 9686:
1.409 foxr 9687: In child process initialization. either getpeername returned undef or
9688: a zero sized object was returned. Processing continues, but in my opinion,
9689: this should be cause for the child to exit.
9690:
9691: =item Unable to determine clientip
9692:
9693: In child process initialization. The peer address from getpeername was not defined.
9694: The client address is stored as "Unavailable" and processing continues.
9695:
9696: =item (Yellow) INFO: Connection <ip> <name> connection type = <type>
1.490 droeschl 9697:
1.409 foxr 9698: In child initialization. A good connectionw as received from <ip>.
9699:
9700: =over 2
9701:
9702: =item <name>
9703:
9704: is the name of the client from hosts.tab.
9705:
9706: =item <type>
9707:
9708: Is the connection type which is either
9709:
9710: =over 2
9711:
9712: =item manager
9713:
9714: The connection is from a manager node, not in hosts.tab
9715:
9716: =item client
9717:
9718: the connection is from a non-manager in the hosts.tab
9719:
9720: =item both
9721:
9722: The connection is from a manager in the hosts.tab.
9723:
9724: =back
9725:
9726: =back
9727:
9728: =item (Blue) Certificates not installed -- trying insecure auth
9729:
9730: One of the certificate file, key file or
9731: certificate authority file could not be found for a client attempting
9732: SSL connection intiation. COnnection will be attemptied in in-secure mode.
9733: (this would be a system with an up to date lond that has not gotten a
9734: certificate from us).
9735:
9736: =item (Green) Successful local authentication
9737:
9738: A local connection successfully negotiated the encryption key.
9739: In this case the IDEA key is in a file (that is hopefully well protected).
9740:
9741: =item (Green) Successful ssl authentication with <client>
9742:
9743: The client (<client> is the peer's name in hosts.tab), has successfully
9744: negotiated an SSL connection with this child process.
9745:
9746: =item (Green) Successful insecure authentication with <client>
1.490 droeschl 9747:
1.409 foxr 9748:
9749: The client has successfully negotiated an insecure connection withthe child process.
9750:
9751: =item (Yellow) Attempted insecure connection disallowed
9752:
9753: The client attempted and failed to successfully negotiate a successful insecure
9754: connection. This can happen either because the variable londAllowInsecure is false
9755: or undefined, or becuse the child did not successfully echo back the challenge
9756: string.
9757:
9758:
9759: =back
9760:
1.441 raeburn 9761: =back
9762:
1.409 foxr 9763:
9764: =cut
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