Annotation of loncom/lond, revision 1.568
1.1 albertel 1: #!/usr/bin/perl
2: # The LearningOnline Network
3: # lond "LON Daemon" Server (port "LOND" 5663)
1.60 www 4: #
1.568 ! raeburn 5: # $Id: lond,v 1.567 2021/06/15 20:52:27 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:
1.568 ! raeburn 68: my $VERSION='$Revision: 1.567 $'; #' 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,},
269: makeuser => {remote => 1, enroll => 1, domroles => 1,},
270: mkdiruserfile => {remote => 1, enroll => 1,},
271: newput => {remote => 1, enroll => 1, reqcrs => 1, domroles => 1,},
272: passwd => {remote => 1},
273: ping => {anywhere => 1},
274: pong => {anywhere => 1},
275: pushfile => {manageronly => 1},
276: put => {remote => 1, enroll => 1, domroles => 1, msg => 1, content => 1, shared => 1},
277: putdom => {remote => 1, domroles => 1,},
278: putstore => {remote => 1, enroll => 1},
279: queryreply => {anywhere => 1},
280: querysend => {anywhere => 1},
1.535 raeburn 281: querysend_activitylog => {remote => 1},
282: querysend_allusers => {remote => 1, domroles => 1},
283: querysend_courselog => {remote => 1},
284: querysend_fetchenrollment => {remote => 1},
285: querysend_getinstuser => {remote => 1},
286: querysend_getmultinstusers => {remote => 1},
287: querysend_instdirsearch => {remote => 1, domroles => 1, coaurem => 1},
288: querysend_institutionalphotos => {remote => 1},
289: querysend_portfolio_metadata => {remote => 1, content => 1},
290: querysend_userlog => {remote => 1, domroles => 1},
291: querysend_usersearch => {remote => 1, enroll => 1, coaurem => 1},
1.525 raeburn 292: quit => {anywhere => 1},
293: readlonnetglobal => {institutiononly => 1},
294: reinit => {manageronly => 1}, #not used currently
295: removeuserfile => {remote => 1, enroll => 1},
296: renameuserfile => {remote => 1,},
297: restore => {remote => 1, enroll => 1, reqcrs => 1,},
298: rolesdel => {remote => 1, enroll => 1, domroles => 1, coaurem => 1},
299: rolesput => {remote => 1, enroll => 1, domroles => 1, coaurem => 1},
1.527 raeburn 300: servercerts => {institutiononly => 1},
1.528 raeburn 301: serverdistarch => {anywhere => 1},
1.525 raeburn 302: serverhomeID => {anywhere => 1},
303: serverloncaparev => {anywhere => 1},
304: servertimezone => {remote => 1, enroll => 1},
305: setannounce => {remote => 1, domroles => 1},
306: sethost => {anywhere => 1},
307: store => {remote => 1, enroll => 1, reqcrs => 1,},
308: studentphoto => {remote => 1, enroll => 1},
309: sub => {content => 1,},
1.552 raeburn 310: tmpdel => {institutiononly => 1},
311: tmpget => {institutiononly => 1},
312: tmpput => {remote => 1, othcoau => 1},
1.525 raeburn 313: tokenauthuserfile => {anywhere => 1},
314: unsub => {content => 1,},
315: update => {shared => 1},
1.564 raeburn 316: updatebalcookie => {institutiononly => 1},
1.525 raeburn 317: updateclickers => {remote => 1},
318: userhassession => {anywhere => 1},
319: userload => {anywhere => 1},
320: version => {anywhere => 1}, #not used
321: );
322:
323: #
1.207 foxr 324: # Statistics that are maintained and dislayed in the status line.
325: #
1.212 foxr 326: my $Transactions = 0; # Number of attempted transactions.
327: my $Failures = 0; # Number of transcations failed.
1.207 foxr 328:
329: # ResetStatistics:
330: # Resets the statistics counters:
331: #
332: sub ResetStatistics {
333: $Transactions = 0;
334: $Failures = 0;
335: }
336:
1.200 matthew 337: #------------------------------------------------------------------------
338: #
339: # LocalConnection
340: # Completes the formation of a locally authenticated connection.
341: # This function will ensure that the 'remote' client is really the
342: # local host. If not, the connection is closed, and the function fails.
343: # If so, initcmd is parsed for the name of a file containing the
344: # IDEA session key. The fie is opened, read, deleted and the session
345: # key returned to the caller.
346: #
347: # Parameters:
348: # $Socket - Socket open on client.
349: # $initcmd - The full text of the init command.
350: #
351: # Returns:
352: # IDEA session key on success.
353: # undef on failure.
354: #
355: sub LocalConnection {
356: my ($Socket, $initcmd) = @_;
1.373 albertel 357: Debug("Attempting local connection: $initcmd client: $clientip");
1.277 albertel 358: if($clientip ne "127.0.0.1") {
1.200 matthew 359: &logthis('<font color="red"> LocalConnection rejecting non local: '
1.373 albertel 360: ."$clientip ne 127.0.0.1 </font>");
1.200 matthew 361: close $Socket;
362: return undef;
1.224 foxr 363: } else {
1.200 matthew 364: chomp($initcmd); # Get rid of \n in filename.
365: my ($init, $type, $name) = split(/:/, $initcmd);
366: Debug(" Init command: $init $type $name ");
367:
368: # Require that $init = init, and $type = local: Otherwise
369: # the caller is insane:
370:
371: if(($init ne "init") && ($type ne "local")) {
372: &logthis('<font color = "red"> LocalConnection: caller is insane! '
373: ."init = $init, and type = $type </font>");
374: close($Socket);;
375: return undef;
376:
377: }
378: # Now get the key filename:
379:
380: my $IDEAKey = lonlocal::ReadKeyFile($name);
381: return $IDEAKey;
382: }
383: }
384: #------------------------------------------------------------------------------
385: #
386: # SSLConnection
387: # Completes the formation of an ssh authenticated connection. The
388: # socket is promoted to an ssl socket. If this promotion and the associated
389: # certificate exchange are successful, the IDEA key is generated and sent
390: # to the remote peer via the SSL tunnel. The IDEA key is also returned to
391: # the caller after the SSL tunnel is torn down.
392: #
393: # Parameters:
394: # Name Type Purpose
395: # $Socket IO::Socket::INET Plaintext socket.
396: #
397: # Returns:
398: # IDEA key on success.
399: # undef on failure.
400: #
401: sub SSLConnection {
402: my $Socket = shift;
403:
404: Debug("SSLConnection: ");
405: my $KeyFile = lonssl::KeyFile();
406: if(!$KeyFile) {
407: my $err = lonssl::LastError();
408: &logthis("<font color=\"red\"> CRITICAL"
409: ."Can't get key file $err </font>");
410: return undef;
411: }
412: my ($CACertificate,
413: $Certificate) = lonssl::CertificateFile();
414:
415:
416: # If any of the key, certificate or certificate authority
417: # certificate filenames are not defined, this can't work.
418:
419: if((!$Certificate) || (!$CACertificate)) {
420: my $err = lonssl::LastError();
421: &logthis("<font color=\"red\"> CRITICAL"
422: ."Can't get certificates: $err </font>");
423:
424: return undef;
425: }
426: Debug("Key: $KeyFile CA: $CACertificate Cert: $Certificate");
427:
428: # Indicate to our peer that we can procede with
429: # a transition to ssl authentication:
430:
431: print $Socket "ok:ssl\n";
432:
433: Debug("Approving promotion -> ssl");
434: # And do so:
435:
1.545 raeburn 436: my $CRLFile;
437: unless ($crlchecked{$clientname}) {
438: $CRLFile = lonssl::CRLFile();
439: $crlchecked{$clientname} = 1;
440: }
441:
1.200 matthew 442: my $SSLSocket = lonssl::PromoteServerSocket($Socket,
443: $CACertificate,
444: $Certificate,
1.544 raeburn 445: $KeyFile,
1.545 raeburn 446: $clientname,
1.546 raeburn 447: $CRLFile,
448: $clientversion);
1.200 matthew 449: if(! ($SSLSocket) ) { # SSL socket promotion failed.
450: my $err = lonssl::LastError();
451: &logthis("<font color=\"red\"> CRITICAL "
452: ."SSL Socket promotion failed: $err </font>");
453: return undef;
454: }
455: Debug("SSL Promotion successful");
456:
457: #
458: # The only thing we'll use the socket for is to send the IDEA key
459: # to the peer:
460:
461: my $Key = lonlocal::CreateCipherKey();
462: print $SSLSocket "$Key\n";
463:
464: lonssl::Close($SSLSocket);
465:
466: Debug("Key exchange complete: $Key");
467:
468: return $Key;
469: }
470: #
471: # InsecureConnection:
472: # If insecure connections are allowd,
473: # exchange a challenge with the client to 'validate' the
474: # client (not really, but that's the protocol):
475: # We produce a challenge string that's sent to the client.
476: # The client must then echo the challenge verbatim to us.
477: #
478: # Parameter:
479: # Socket - Socket open on the client.
480: # Returns:
481: # 1 - success.
482: # 0 - failure (e.g.mismatch or insecure not allowed).
483: #
484: sub InsecureConnection {
485: my $Socket = shift;
486:
487: # Don't even start if insecure connections are not allowed.
1.532 raeburn 488: # return 0 if Insecure connections not allowed.
489: #
490: if (ref($secureconf{'connfrom'}) eq 'HASH') {
491: if ($clientsamedom) {
492: if ($secureconf{'connfrom'}{'dom'} eq 'req') {
493: return 0;
494: }
495: } elsif ($clientsameinst) {
496: if ($secureconf{'connfrom'}{'intdom'} eq 'req') {
497: return 0;
498: }
499: } else {
500: if ($secureconf{'connfrom'}{'other'} eq 'req') {
501: return 0;
502: }
503: }
504: } elsif (!$perlvar{londAllowInsecure}) {
1.200 matthew 505: return 0;
506: }
507:
508: # Fabricate a challenge string and send it..
509:
510: my $challenge = "$$".time; # pid + time.
511: print $Socket "$challenge\n";
512: &status("Waiting for challenge reply");
513:
514: my $answer = <$Socket>;
515: $answer =~s/\W//g;
516: if($challenge eq $answer) {
517: return 1;
1.224 foxr 518: } else {
1.200 matthew 519: logthis("<font color='blue'>WARNING client did not respond to challenge</font>");
520: &status("No challenge reqply");
521: return 0;
522: }
523:
524:
525: }
1.251 foxr 526: #
527: # Safely execute a command (as long as it's not a shel command and doesn
528: # not require/rely on shell escapes. The function operates by doing a
529: # a pipe based fork and capturing stdout and stderr from the pipe.
530: #
531: # Formal Parameters:
532: # $line - A line of text to be executed as a command.
533: # Returns:
534: # The output from that command. If the output is multiline the caller
535: # must know how to split up the output.
536: #
537: #
538: sub execute_command {
539: my ($line) = @_;
540: my @words = split(/\s/, $line); # Bust the command up into words.
541: my $output = "";
542:
543: my $pid = open(CHILD, "-|");
544:
545: if($pid) { # Parent process
546: Debug("In parent process for execute_command");
547: my @data = <CHILD>; # Read the child's outupt...
548: close CHILD;
549: foreach my $output_line (@data) {
550: Debug("Adding $output_line");
551: $output .= $output_line; # Presumably has a \n on it.
552: }
553:
554: } else { # Child process
555: close (STDERR);
556: open (STDERR, ">&STDOUT");# Combine stderr, and stdout...
557: exec(@words); # won't return.
558: }
559: return $output;
560: }
561:
1.200 matthew 562:
1.140 foxr 563: # GetCertificate: Given a transaction that requires a certificate,
564: # this function will extract the certificate from the transaction
565: # request. Note that at this point, the only concept of a certificate
566: # is the hostname to which we are connected.
567: #
568: # Parameter:
569: # request - The request sent by our client (this parameterization may
570: # need to change when we really use a certificate granting
571: # authority.
572: #
573: sub GetCertificate {
574: my $request = shift;
575:
576: return $clientip;
577: }
1.161 foxr 578:
1.178 foxr 579: #
580: # Return true if client is a manager.
581: #
582: sub isManager {
583: return (($ConnectionType eq "manager") || ($ConnectionType eq "both"));
584: }
585: #
586: # Return tru if client can do client functions
587: #
588: sub isClient {
589: return (($ConnectionType eq "client") || ($ConnectionType eq "both"));
590: }
1.161 foxr 591:
592:
1.156 foxr 593: #
594: # ReadManagerTable: Reads in the current manager table. For now this is
595: # done on each manager authentication because:
596: # - These authentications are not frequent
597: # - This allows dynamic changes to the manager table
598: # without the need to signal to the lond.
599: #
600: sub ReadManagerTable {
601:
1.412 foxr 602: &Debug("Reading manager table");
1.156 foxr 603: # Clean out the old table first..
604:
1.166 foxr 605: foreach my $key (keys %managers) {
606: delete $managers{$key};
607: }
608:
609: my $tablename = $perlvar{'lonTabDir'}."/managers.tab";
610: if (!open (MANAGERS, $tablename)) {
1.473 raeburn 611: my $hostname = &Apache::lonnet::hostname($perlvar{'lonHostID'});
612: if (&Apache::lonnet::is_LC_dns($hostname)) {
1.472 raeburn 613: &logthis('<font color="red">No manager table. Nobody can manage!!</font>');
614: }
615: return;
1.166 foxr 616: }
617: while(my $host = <MANAGERS>) {
618: chomp($host);
619: if ($host =~ "^#") { # Comment line.
620: next;
621: }
1.368 albertel 622: if (!defined &Apache::lonnet::get_host_ip($host)) { # This is a non cluster member
1.161 foxr 623: # The entry is of the form:
624: # cluname:hostname
625: # cluname - A 'cluster hostname' is needed in order to negotiate
626: # the host key.
627: # hostname- The dns name of the host.
628: #
1.166 foxr 629: my($cluname, $dnsname) = split(/:/, $host);
630:
631: my $ip = gethostbyname($dnsname);
632: if(defined($ip)) { # bad names don't deserve entry.
633: my $hostip = inet_ntoa($ip);
634: $managers{$hostip} = $cluname;
635: logthis('<font color="green"> registering manager '.
636: "$dnsname as $cluname with $hostip </font>\n");
637: }
638: } else {
639: logthis('<font color="green"> existing host'." $host</font>\n");
1.472 raeburn 640: $managers{&Apache::lonnet::get_host_ip($host)} = $host; # Use info from cluster tab if cluster memeber
1.166 foxr 641: }
642: }
1.156 foxr 643: }
1.140 foxr 644:
645: #
646: # ValidManager: Determines if a given certificate represents a valid manager.
647: # in this primitive implementation, the 'certificate' is
648: # just the connecting loncapa client name. This is checked
649: # against a valid client list in the configuration.
650: #
651: #
652: sub ValidManager {
653: my $certificate = shift;
654:
1.163 foxr 655: return isManager;
1.140 foxr 656: }
657: #
1.143 foxr 658: # CopyFile: Called as part of the process of installing a
659: # new configuration file. This function copies an existing
660: # file to a backup file.
661: # Parameters:
662: # oldfile - Name of the file to backup.
663: # newfile - Name of the backup file.
664: # Return:
665: # 0 - Failure (errno has failure reason).
666: # 1 - Success.
667: #
668: sub CopyFile {
1.192 foxr 669:
670: my ($oldfile, $newfile) = @_;
1.143 foxr 671:
1.281 matthew 672: if (! copy($oldfile,$newfile)) {
673: return 0;
1.143 foxr 674: }
1.281 matthew 675: chmod(0660, $newfile);
676: return 1;
1.143 foxr 677: }
1.157 foxr 678: #
679: # Host files are passed out with externally visible host IPs.
680: # If, for example, we are behind a fire-wall or NAT host, our
681: # internally visible IP may be different than the externally
682: # visible IP. Therefore, we always adjust the contents of the
683: # host file so that the entry for ME is the IP that we believe
684: # we have. At present, this is defined as the entry that
685: # DNS has for us. If by some chance we are not able to get a
686: # DNS translation for us, then we assume that the host.tab file
687: # is correct.
688: # BUGBUGBUG - in the future, we really should see if we can
689: # easily query the interface(s) instead.
690: # Parameter(s):
691: # contents - The contents of the host.tab to check.
692: # Returns:
693: # newcontents - The adjusted contents.
694: #
695: #
696: sub AdjustHostContents {
697: my $contents = shift;
698: my $adjusted;
699: my $me = $perlvar{'lonHostID'};
700:
1.354 albertel 701: foreach my $line (split(/\n/,$contents)) {
1.472 raeburn 702: if(!(($line eq "") || ($line =~ /^ *\#/) || ($line =~ /^ *$/) ||
703: ($line =~ /^\s*\^/))) {
1.157 foxr 704: chomp($line);
705: my ($id,$domain,$role,$name,$ip,$maxcon,$idleto,$mincon)=split(/:/,$line);
706: if ($id eq $me) {
1.354 albertel 707: my $ip = gethostbyname($name);
708: my $ipnew = inet_ntoa($ip);
709: $ip = $ipnew;
1.157 foxr 710: # Reconstruct the host line and append to adjusted:
711:
1.354 albertel 712: my $newline = "$id:$domain:$role:$name:$ip";
713: if($maxcon ne "") { # Not all hosts have loncnew tuning params
714: $newline .= ":$maxcon:$idleto:$mincon";
715: }
716: $adjusted .= $newline."\n";
1.157 foxr 717:
1.354 albertel 718: } else { # Not me, pass unmodified.
719: $adjusted .= $line."\n";
720: }
1.157 foxr 721: } else { # Blank or comment never re-written.
722: $adjusted .= $line."\n"; # Pass blanks and comments as is.
723: }
1.354 albertel 724: }
725: return $adjusted;
1.157 foxr 726: }
1.143 foxr 727: #
728: # InstallFile: Called to install an administrative file:
1.412 foxr 729: # - The file is created int a temp directory called <name>.tmp
730: # - lcinstall file is called to install the file.
731: # since the web app has no direct write access to the table directory
1.143 foxr 732: #
733: # Parameters:
734: # Name of the file
735: # File Contents.
736: # Return:
737: # nonzero - success.
738: # 0 - failure and $! has an errno.
1.412 foxr 739: # Assumptions:
740: # File installtion is a relatively infrequent
1.143 foxr 741: #
742: sub InstallFile {
1.192 foxr 743:
744: my ($Filename, $Contents) = @_;
1.412 foxr 745: # my $TempFile = $Filename.".tmp";
746: my $exedir = $perlvar{'lonDaemons'};
747: my $tmpdir = $exedir.'/tmp/';
748: my $TempFile = $tmpdir."TempTableFile.tmp";
1.143 foxr 749:
750: # Open the file for write:
751:
752: my $fh = IO::File->new("> $TempFile"); # Write to temp.
753: if(!(defined $fh)) {
754: &logthis('<font color="red"> Unable to create '.$TempFile."</font>");
755: return 0;
756: }
757: # write the contents of the file:
758:
759: print $fh ($Contents);
760: $fh->close; # In case we ever have a filesystem w. locking
761:
1.412 foxr 762: chmod(0664, $TempFile); # Everyone can write it.
763:
764: # Use lcinstall file to put the file in the table directory...
765:
766: &Debug("Opening pipe to $exedir/lcinstallfile $TempFile $Filename");
767: my $pf = IO::File->new("| $exedir/lcinstallfile $TempFile $Filename > $exedir/logs/lcinstallfile.log");
768: close $pf;
769: my $err = $?;
770: &Debug("Status is $err");
771: if ($err != 0) {
772: my $msg = $err;
773: if ($err < @installerrors) {
774: $msg = $installerrors[$err];
775: }
776: &logthis("Install failed for table file $Filename : $msg");
777: return 0;
778: }
779:
780: # Remove the temp file:
1.143 foxr 781:
1.412 foxr 782: unlink($TempFile);
1.143 foxr 783:
784: return 1;
785: }
1.200 matthew 786:
787:
1.169 foxr 788: #
789: # ConfigFileFromSelector: converts a configuration file selector
1.411 foxr 790: # into a configuration file pathname.
1.472 raeburn 791: # Supports the following file selectors:
792: # hosts, domain, dns_hosts, dns_domain
1.411 foxr 793: #
1.169 foxr 794: #
795: # Parameters:
796: # selector - Configuration file selector.
797: # Returns:
798: # Full path to the file or undef if the selector is invalid.
799: #
800: sub ConfigFileFromSelector {
801: my $selector = shift;
802: my $tablefile;
803:
1.549 raeburn 804: if ($selector eq 'loncapaCAcrl') {
805: my $tabledir = $perlvar{'lonCertificateDirectory'};
806: if (-d $tabledir) {
807: $tablefile = $tabledir.'/'.$selector.'.pem';
808: }
809: } else {
810: my $tabledir = $perlvar{'lonTabDir'}.'/';
811: if (($selector eq "hosts") || ($selector eq "domain") ||
812: ($selector eq "dns_hosts") || ($selector eq "dns_domain")) {
813: $tablefile = $tabledir.$selector.'.tab';
814: }
1.169 foxr 815: }
816: return $tablefile;
817: }
1.143 foxr 818: #
1.141 foxr 819: # PushFile: Called to do an administrative push of a file.
820: # - Ensure the file being pushed is one we support.
821: # - Backup the old file to <filename.saved>
822: # - Separate the contents of the new file out from the
823: # rest of the request.
824: # - Write the new file.
825: # Parameter:
826: # Request - The entire user request. This consists of a : separated
827: # string pushfile:tablename:contents.
828: # NOTE: The contents may have :'s in it as well making things a bit
829: # more interesting... but not much.
830: # Returns:
831: # String to send to client ("ok" or "refused" if bad file).
832: #
833: sub PushFile {
1.510 raeburn 834: my $request = shift;
1.141 foxr 835: my ($command, $filename, $contents) = split(":", $request, 3);
1.412 foxr 836: &Debug("PushFile");
1.141 foxr 837:
1.549 raeburn 838: # At this point in time, pushes for only the following tables and
839: # CRL file are supported:
1.141 foxr 840: # hosts.tab ($filename eq host).
841: # domain.tab ($filename eq domain).
1.472 raeburn 842: # dns_hosts.tab ($filename eq dns_host).
1.554 raeburn 843: # dns_domain.tab ($filename eq dns_domain).
844: # loncapaCAcrl.pem ($filename eq loncapaCAcrl).
1.141 foxr 845: # Construct the destination filename or reject the request.
846: #
847: # lonManage is supposed to ensure this, however this session could be
848: # part of some elaborate spoof that managed somehow to authenticate.
849: #
850:
1.169 foxr 851:
852: my $tablefile = ConfigFileFromSelector($filename);
853: if(! (defined $tablefile)) {
1.141 foxr 854: return "refused";
855: }
1.412 foxr 856:
1.157 foxr 857: # If the file being pushed is the host file, we adjust the entry for ourself so that the
858: # IP will be our current IP as looked up in dns. Note this is only 99% good as it's possible
859: # to conceive of conditions where we don't have a DNS entry locally. This is possible in a
860: # network sense but it doesn't make much sense in a LonCAPA sense so we ignore (for now)
861: # that possibilty.
862:
863: if($filename eq "host") {
864: $contents = AdjustHostContents($contents);
1.549 raeburn 865: } elsif (($filename eq 'dns_host') || ($filename eq 'dns_domain') ||
866: ($filename eq 'loncapaCAcrl')) {
1.510 raeburn 867: if ($contents eq '') {
868: &logthis('<font color="red"> Pushfile: unable to install '
869: .$tablefile." - no data received from push. </font>");
870: return 'error: push had no data';
871: }
872: if (&Apache::lonnet::get_host_ip($clientname)) {
873: my $clienthost = &Apache::lonnet::hostname($clientname);
874: if ($managers{$clientip} eq $clientname) {
875: my $clientprotocol = $Apache::lonnet::protocol{$clientname};
876: $clientprotocol = 'http' if ($clientprotocol ne 'https');
1.549 raeburn 877: my $url;
878: if ($filename eq 'loncapaCAcrl') {
879: $url = '/adm/dns/loncapaCRL';
880: } else {
881: $url = '/adm/'.$filename;
882: $url =~ s{_}{/};
883: }
1.510 raeburn 884: my $request=new HTTP::Request('GET',"$clientprotocol://$clienthost$url");
1.523 raeburn 885: my $response = LONCAPA::LWPReq::makerequest($clientname,$request,'',\%perlvar,60,0);
1.510 raeburn 886: if ($response->is_error()) {
887: &logthis('<font color="red"> Pushfile: unable to install '
888: .$tablefile." - error attempting to pull data. </font>");
889: return 'error: pull failed';
890: } else {
891: my $result = $response->content;
892: chomp($result);
893: unless ($result eq $contents) {
894: &logthis('<font color="red"> Pushfile: unable to install '
895: .$tablefile." - pushed data and pulled data differ. </font>");
896: my $pushleng = length($contents);
897: my $pullleng = length($result);
898: if ($pushleng != $pullleng) {
899: return "error: $pushleng vs $pullleng bytes";
900: } else {
901: return "error: mismatch push and pull";
902: }
903: }
904: }
905: }
906: }
1.157 foxr 907: }
908:
1.141 foxr 909: # Install the new file:
910:
1.412 foxr 911: &logthis("Installing new $tablefile contents:\n$contents");
1.143 foxr 912: if(!InstallFile($tablefile, $contents)) {
913: &logthis('<font color="red"> Pushfile: unable to install '
1.145 foxr 914: .$tablefile." $! </font>");
1.143 foxr 915: return "error:$!";
1.224 foxr 916: } else {
1.143 foxr 917: &logthis('<font color="green"> Installed new '.$tablefile
1.473 raeburn 918: ." - transaction by: $clientname ($clientip)</font>");
1.472 raeburn 919: my $adminmail = $perlvar{'lonAdmEMail'};
920: my $admindom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
921: if ($admindom ne '') {
922: my %domconfig =
923: &Apache::lonnet::get_dom('configuration',['contacts'],$admindom);
924: if (ref($domconfig{'contacts'}) eq 'HASH') {
925: if ($domconfig{'contacts'}{'adminemail'} ne '') {
926: $adminmail = $domconfig{'contacts'}{'adminemail'};
927: }
928: }
929: }
930: if ($adminmail =~ /^[^\@]+\@[^\@]+$/) {
931: my $msg = new Mail::Send;
932: $msg->to($adminmail);
933: $msg->subject('LON-CAPA DNS update on '.$perlvar{'lonHostID'});
934: $msg->add('Content-type','text/plain; charset=UTF-8');
935: if (my $fh = $msg->open()) {
936: print $fh 'Update to '.$tablefile.' from Cluster Manager '.
1.473 raeburn 937: "$clientname ($clientip)\n";
1.472 raeburn 938: $fh->close;
939: }
940: }
1.143 foxr 941: }
942:
1.141 foxr 943: # Indicate success:
944:
945: return "ok";
946:
947: }
1.145 foxr 948:
949: #
950: # Called to re-init either lonc or lond.
951: #
952: # Parameters:
953: # request - The full request by the client. This is of the form
954: # reinit:<process>
955: # where <process> is allowed to be either of
956: # lonc or lond
957: #
958: # Returns:
959: # The string to be sent back to the client either:
960: # ok - Everything worked just fine.
961: # error:why - There was a failure and why describes the reason.
962: #
963: #
964: sub ReinitProcess {
965: my $request = shift;
966:
1.146 foxr 967:
968: # separate the request (reinit) from the process identifier and
969: # validate it producing the name of the .pid file for the process.
970: #
971: #
972: my ($junk, $process) = split(":", $request);
1.147 foxr 973: my $processpidfile = $perlvar{'lonDaemons'}.'/logs/';
1.146 foxr 974: if($process eq 'lonc') {
975: $processpidfile = $processpidfile."lonc.pid";
1.147 foxr 976: if (!open(PIDFILE, "< $processpidfile")) {
977: return "error:Open failed for $processpidfile";
978: }
979: my $loncpid = <PIDFILE>;
980: close(PIDFILE);
981: logthis('<font color="red"> Reinitializing lonc pid='.$loncpid
982: ."</font>");
983: kill("USR2", $loncpid);
1.146 foxr 984: } elsif ($process eq 'lond') {
1.147 foxr 985: logthis('<font color="red"> Reinitializing self (lond) </font>');
986: &UpdateHosts; # Lond is us!!
1.146 foxr 987: } else {
988: &logthis('<font color="yellow" Invalid reinit request for '.$process
989: ."</font>");
990: return "error:Invalid process identifier $process";
991: }
1.145 foxr 992: return 'ok';
993: }
1.168 foxr 994: # Validate a line in a configuration file edit script:
995: # Validation includes:
996: # - Ensuring the command is valid.
997: # - Ensuring the command has sufficient parameters
998: # Parameters:
999: # scriptline - A line to validate (\n has been stripped for what it's worth).
1.167 foxr 1000: #
1.168 foxr 1001: # Return:
1002: # 0 - Invalid scriptline.
1003: # 1 - Valid scriptline
1004: # NOTE:
1005: # Only the command syntax is checked, not the executability of the
1006: # command.
1007: #
1008: sub isValidEditCommand {
1009: my $scriptline = shift;
1010:
1011: # Line elements are pipe separated:
1012:
1013: my ($command, $key, $newline) = split(/\|/, $scriptline);
1014: &logthis('<font color="green"> isValideditCommand checking: '.
1015: "Command = '$command', Key = '$key', Newline = '$newline' </font>\n");
1016:
1017: if ($command eq "delete") {
1018: #
1019: # key with no newline.
1020: #
1021: if( ($key eq "") || ($newline ne "")) {
1022: return 0; # Must have key but no newline.
1023: } else {
1024: return 1; # Valid syntax.
1025: }
1.169 foxr 1026: } elsif ($command eq "replace") {
1.168 foxr 1027: #
1028: # key and newline:
1029: #
1030: if (($key eq "") || ($newline eq "")) {
1031: return 0;
1032: } else {
1033: return 1;
1034: }
1.169 foxr 1035: } elsif ($command eq "append") {
1036: if (($key ne "") && ($newline eq "")) {
1037: return 1;
1038: } else {
1039: return 0;
1040: }
1.168 foxr 1041: } else {
1042: return 0; # Invalid command.
1043: }
1044: return 0; # Should not get here!!!
1045: }
1.169 foxr 1046: #
1047: # ApplyEdit - Applies an edit command to a line in a configuration
1048: # file. It is the caller's responsiblity to validate the
1049: # edit line.
1050: # Parameters:
1051: # $directive - A single edit directive to apply.
1052: # Edit directives are of the form:
1053: # append|newline - Appends a new line to the file.
1054: # replace|key|newline - Replaces the line with key value 'key'
1055: # delete|key - Deletes the line with key value 'key'.
1056: # $editor - A config file editor object that contains the
1057: # file being edited.
1058: #
1059: sub ApplyEdit {
1.192 foxr 1060:
1061: my ($directive, $editor) = @_;
1.169 foxr 1062:
1063: # Break the directive down into its command and its parameters
1064: # (at most two at this point. The meaning of the parameters, if in fact
1065: # they exist depends on the command).
1066:
1067: my ($command, $p1, $p2) = split(/\|/, $directive);
1068:
1069: if($command eq "append") {
1070: $editor->Append($p1); # p1 - key p2 null.
1071: } elsif ($command eq "replace") {
1072: $editor->ReplaceLine($p1, $p2); # p1 - key p2 = newline.
1073: } elsif ($command eq "delete") {
1074: $editor->DeleteLine($p1); # p1 - key p2 null.
1075: } else { # Should not get here!!!
1076: die "Invalid command given to ApplyEdit $command"
1077: }
1078: }
1079: #
1080: # AdjustOurHost:
1081: # Adjusts a host file stored in a configuration file editor object
1082: # for the true IP address of this host. This is necessary for hosts
1083: # that live behind a firewall.
1084: # Those hosts have a publicly distributed IP of the firewall, but
1085: # internally must use their actual IP. We assume that a given
1086: # host only has a single IP interface for now.
1087: # Formal Parameters:
1088: # editor - The configuration file editor to adjust. This
1089: # editor is assumed to contain a hosts.tab file.
1090: # Strategy:
1091: # - Figure out our hostname.
1092: # - Lookup the entry for this host.
1093: # - Modify the line to contain our IP
1094: # - Do a replace for this host.
1095: sub AdjustOurHost {
1096: my $editor = shift;
1097:
1098: # figure out who I am.
1099:
1100: my $myHostName = $perlvar{'lonHostID'}; # LonCAPA hostname.
1101:
1102: # Get my host file entry.
1103:
1104: my $ConfigLine = $editor->Find($myHostName);
1105: if(! (defined $ConfigLine)) {
1106: die "AdjustOurHost - no entry for me in hosts file $myHostName";
1107: }
1108: # figure out my IP:
1109: # Use the config line to get my hostname.
1110: # Use gethostbyname to translate that into an IP address.
1111: #
1.338 albertel 1112: my ($id,$domain,$role,$name,$maxcon,$idleto,$mincon) = split(/:/,$ConfigLine);
1.169 foxr 1113: #
1114: # Reassemble the config line from the elements in the list.
1115: # Note that if the loncnew items were not present before, they will
1116: # be now even if they would be empty
1117: #
1118: my $newConfigLine = $id;
1.338 albertel 1119: foreach my $item ($domain, $role, $name, $maxcon, $idleto, $mincon) {
1.169 foxr 1120: $newConfigLine .= ":".$item;
1121: }
1122: # Replace the line:
1123:
1124: $editor->ReplaceLine($id, $newConfigLine);
1125:
1126: }
1127: #
1128: # ReplaceConfigFile:
1129: # Replaces a configuration file with the contents of a
1130: # configuration file editor object.
1131: # This is done by:
1132: # - Copying the target file to <filename>.old
1133: # - Writing the new file to <filename>.tmp
1134: # - Moving <filename.tmp> -> <filename>
1135: # This laborious process ensures that the system is never without
1136: # a configuration file that's at least valid (even if the contents
1137: # may be dated).
1138: # Parameters:
1139: # filename - Name of the file to modify... this is a full path.
1140: # editor - Editor containing the file.
1141: #
1142: sub ReplaceConfigFile {
1.192 foxr 1143:
1144: my ($filename, $editor) = @_;
1.168 foxr 1145:
1.169 foxr 1146: CopyFile ($filename, $filename.".old");
1147:
1148: my $contents = $editor->Get(); # Get the contents of the file.
1149:
1150: InstallFile($filename, $contents);
1151: }
1.168 foxr 1152: #
1153: #
1154: # Called to edit a configuration table file
1.167 foxr 1155: # Parameters:
1156: # request - The entire command/request sent by lonc or lonManage
1157: # Return:
1158: # The reply to send to the client.
1.168 foxr 1159: #
1.167 foxr 1160: sub EditFile {
1161: my $request = shift;
1162:
1163: # Split the command into it's pieces: edit:filetype:script
1164:
1.339 albertel 1165: my ($cmd, $filetype, $script) = split(/:/, $request,3); # : in script
1.167 foxr 1166:
1167: # Check the pre-coditions for success:
1168:
1.339 albertel 1169: if($cmd != "edit") { # Something is amiss afoot alack.
1.167 foxr 1170: return "error:edit request detected, but request != 'edit'\n";
1171: }
1172: if( ($filetype ne "hosts") &&
1173: ($filetype ne "domain")) {
1174: return "error:edit requested with invalid file specifier: $filetype \n";
1175: }
1176:
1177: # Split the edit script and check it's validity.
1.168 foxr 1178:
1179: my @scriptlines = split(/\n/, $script); # one line per element.
1180: my $linecount = scalar(@scriptlines);
1181: for(my $i = 0; $i < $linecount; $i++) {
1182: chomp($scriptlines[$i]);
1183: if(!isValidEditCommand($scriptlines[$i])) {
1184: return "error:edit with bad script line: '$scriptlines[$i]' \n";
1185: }
1186: }
1.145 foxr 1187:
1.167 foxr 1188: # Execute the edit operation.
1.169 foxr 1189: # - Create a config file editor for the appropriate file and
1190: # - execute each command in the script:
1191: #
1192: my $configfile = ConfigFileFromSelector($filetype);
1193: if (!(defined $configfile)) {
1194: return "refused\n";
1195: }
1196: my $editor = ConfigFileEdit->new($configfile);
1.167 foxr 1197:
1.169 foxr 1198: for (my $i = 0; $i < $linecount; $i++) {
1199: ApplyEdit($scriptlines[$i], $editor);
1200: }
1201: # If the file is the host file, ensure that our host is
1202: # adjusted to have our ip:
1203: #
1204: if($filetype eq "host") {
1205: AdjustOurHost($editor);
1206: }
1207: # Finally replace the current file with our file.
1208: #
1209: ReplaceConfigFile($configfile, $editor);
1.167 foxr 1210:
1211: return "ok\n";
1212: }
1.207 foxr 1213:
1.255 foxr 1214: # read_profile
1215: #
1216: # Returns a set of specific entries from a user's profile file.
1217: # this is a utility function that is used by both get_profile_entry and
1218: # get_profile_entry_encrypted.
1219: #
1220: # Parameters:
1221: # udom - Domain in which the user exists.
1222: # uname - User's account name (loncapa account)
1223: # namespace - The profile namespace to open.
1224: # what - A set of & separated queries.
1225: # Returns:
1226: # If all ok: - The string that needs to be shipped back to the user.
1227: # If failure - A string that starts with error: followed by the failure
1228: # reason.. note that this probabyl gets shipped back to the
1229: # user as well.
1230: #
1231: sub read_profile {
1232: my ($udom, $uname, $namespace, $what) = @_;
1233:
1234: my $hashref = &tie_user_hash($udom, $uname, $namespace,
1235: &GDBM_READER());
1236: if ($hashref) {
1237: my @queries=split(/\&/,$what);
1.440 raeburn 1238: if ($namespace eq 'roles') {
1239: @queries = map { &unescape($_); } @queries;
1240: }
1.255 foxr 1241: my $qresult='';
1242:
1243: for (my $i=0;$i<=$#queries;$i++) {
1244: $qresult.="$hashref->{$queries[$i]}&"; # Presumably failure gives empty string.
1245: }
1246: $qresult=~s/\&$//; # Remove trailing & from last lookup.
1.311 albertel 1247: if (&untie_user_hash($hashref)) {
1.255 foxr 1248: return $qresult;
1249: } else {
1250: return "error: ".($!+0)." untie (GDBM) Failed";
1251: }
1252: } else {
1253: if ($!+0 == 2) {
1254: return "error:No such file or GDBM reported bad block error";
1255: } else {
1256: return "error: ".($!+0)." tie (GDBM) Failed";
1257: }
1258: }
1259:
1260: }
1.214 foxr 1261: #--------------------- Request Handlers --------------------------------------------
1262: #
1.215 foxr 1263: # By convention each request handler registers itself prior to the sub
1264: # declaration:
1.214 foxr 1265: #
1266:
1.216 foxr 1267: #++
1268: #
1.214 foxr 1269: # Handles ping requests.
1270: # Parameters:
1271: # $cmd - the actual keyword that invoked us.
1272: # $tail - the tail of the request that invoked us.
1273: # $replyfd- File descriptor connected to the client
1274: # Implicit Inputs:
1275: # $currenthostid - Global variable that carries the name of the host we are
1276: # known as.
1277: # Returns:
1278: # 1 - Ok to continue processing.
1279: # 0 - Program should exit.
1280: # Side effects:
1281: # Reply information is sent to the client.
1282: sub ping_handler {
1283: my ($cmd, $tail, $client) = @_;
1284: Debug("$cmd $tail $client .. $currenthostid:");
1285:
1.387 albertel 1286: Reply( $client,\$currenthostid,"$cmd:$tail");
1.214 foxr 1287:
1288: return 1;
1289: }
1290: ®ister_handler("ping", \&ping_handler, 0, 1, 1); # Ping unencoded, client or manager.
1291:
1.216 foxr 1292: #++
1.215 foxr 1293: #
1294: # Handles pong requests. Pong replies with our current host id, and
1295: # the results of a ping sent to us via our lonc.
1296: #
1297: # Parameters:
1298: # $cmd - the actual keyword that invoked us.
1299: # $tail - the tail of the request that invoked us.
1300: # $replyfd- File descriptor connected to the client
1301: # Implicit Inputs:
1302: # $currenthostid - Global variable that carries the name of the host we are
1303: # connected to.
1304: # Returns:
1305: # 1 - Ok to continue processing.
1306: # 0 - Program should exit.
1307: # Side effects:
1308: # Reply information is sent to the client.
1309: sub pong_handler {
1310: my ($cmd, $tail, $replyfd) = @_;
1311:
1.365 albertel 1312: my $reply=&Apache::lonnet::reply("ping",$clientname);
1.215 foxr 1313: &Reply( $replyfd, "$currenthostid:$reply\n", "$cmd:$tail");
1314: return 1;
1315: }
1316: ®ister_handler("pong", \&pong_handler, 0, 1, 1); # Pong unencoded, client or manager
1317:
1.216 foxr 1318: #++
1319: # Called to establish an encrypted session key with the remote client.
1320: # Note that with secure lond, in most cases this function is never
1321: # invoked. Instead, the secure session key is established either
1322: # via a local file that's locked down tight and only lives for a short
1323: # time, or via an ssl tunnel...and is generated from a bunch-o-random
1324: # bits from /dev/urandom, rather than the predictable pattern used by
1325: # by this sub. This sub is only used in the old-style insecure
1326: # key negotiation.
1327: # Parameters:
1328: # $cmd - the actual keyword that invoked us.
1329: # $tail - the tail of the request that invoked us.
1330: # $replyfd- File descriptor connected to the client
1331: # Implicit Inputs:
1332: # $currenthostid - Global variable that carries the name of the host
1333: # known as.
1.448 raeburn 1334: # $clientname - Global variable that carries the name of the host we're connected to.
1.216 foxr 1335: # Returns:
1336: # 1 - Ok to continue processing.
1337: # 0 - Program should exit.
1338: # Implicit Outputs:
1339: # Reply information is sent to the client.
1340: # $cipher is set with a reference to a new IDEA encryption object.
1341: #
1342: sub establish_key_handler {
1343: my ($cmd, $tail, $replyfd) = @_;
1344:
1345: my $buildkey=time.$$.int(rand 100000);
1346: $buildkey=~tr/1-6/A-F/;
1347: $buildkey=int(rand 100000).$buildkey.int(rand 100000);
1348: my $key=$currenthostid.$clientname;
1349: $key=~tr/a-z/A-Z/;
1350: $key=~tr/G-P/0-9/;
1351: $key=~tr/Q-Z/0-9/;
1352: $key=$key.$buildkey.$key.$buildkey.$key.$buildkey;
1353: $key=substr($key,0,32);
1354: my $cipherkey=pack("H32",$key);
1355: $cipher=new IDEA $cipherkey;
1.387 albertel 1356: &Reply($replyfd, \$buildkey, "$cmd:$tail");
1.216 foxr 1357:
1358: return 1;
1359:
1360: }
1361: ®ister_handler("ekey", \&establish_key_handler, 0, 1,1);
1362:
1.217 foxr 1363: # Handler for the load command. Returns the current system load average
1364: # to the requestor.
1365: #
1366: # Parameters:
1367: # $cmd - the actual keyword that invoked us.
1368: # $tail - the tail of the request that invoked us.
1369: # $replyfd- File descriptor connected to the client
1370: # Implicit Inputs:
1371: # $currenthostid - Global variable that carries the name of the host
1372: # known as.
1.448 raeburn 1373: # $clientname - Global variable that carries the name of the host we're connected to.
1.217 foxr 1374: # Returns:
1375: # 1 - Ok to continue processing.
1376: # 0 - Program should exit.
1377: # Side effects:
1378: # Reply information is sent to the client.
1379: sub load_handler {
1380: my ($cmd, $tail, $replyfd) = @_;
1381:
1.463 foxr 1382:
1383:
1.217 foxr 1384: # Get the load average from /proc/loadavg and calculate it as a percentage of
1385: # the allowed load limit as set by the perl global variable lonLoadLim
1386:
1387: my $loadavg;
1388: my $loadfile=IO::File->new('/proc/loadavg');
1389:
1390: $loadavg=<$loadfile>;
1391: $loadavg =~ s/\s.*//g; # Extract the first field only.
1392:
1393: my $loadpercent=100*$loadavg/$perlvar{'lonLoadLim'};
1394:
1.387 albertel 1395: &Reply( $replyfd, \$loadpercent, "$cmd:$tail");
1.217 foxr 1396:
1397: return 1;
1398: }
1.263 albertel 1399: ®ister_handler("load", \&load_handler, 0, 1, 0);
1.217 foxr 1400:
1401: #
1402: # Process the userload request. This sub returns to the client the current
1403: # user load average. It can be invoked either by clients or managers.
1404: #
1405: # Parameters:
1406: # $cmd - the actual keyword that invoked us.
1407: # $tail - the tail of the request that invoked us.
1408: # $replyfd- File descriptor connected to the client
1409: # Implicit Inputs:
1410: # $currenthostid - Global variable that carries the name of the host
1411: # known as.
1.448 raeburn 1412: # $clientname - Global variable that carries the name of the host we're connected to.
1.217 foxr 1413: # Returns:
1414: # 1 - Ok to continue processing.
1415: # 0 - Program should exit
1416: # Implicit inputs:
1417: # whatever the userload() function requires.
1418: # Implicit outputs:
1419: # the reply is written to the client.
1420: #
1421: sub user_load_handler {
1422: my ($cmd, $tail, $replyfd) = @_;
1423:
1.365 albertel 1424: my $userloadpercent=&Apache::lonnet::userload();
1.387 albertel 1425: &Reply($replyfd, \$userloadpercent, "$cmd:$tail");
1.217 foxr 1426:
1427: return 1;
1428: }
1.263 albertel 1429: ®ister_handler("userload", \&user_load_handler, 0, 1, 0);
1.217 foxr 1430:
1.218 foxr 1431: # Process a request for the authorization type of a user:
1432: # (userauth).
1433: #
1434: # Parameters:
1435: # $cmd - the actual keyword that invoked us.
1436: # $tail - the tail of the request that invoked us.
1437: # $replyfd- File descriptor connected to the client
1438: # Returns:
1439: # 1 - Ok to continue processing.
1440: # 0 - Program should exit
1441: # Implicit outputs:
1442: # The user authorization type is written to the client.
1443: #
1444: sub user_authorization_type {
1445: my ($cmd, $tail, $replyfd) = @_;
1446:
1447: my $userinput = "$cmd:$tail";
1448:
1449: # Pull the domain and username out of the command tail.
1.222 foxr 1450: # and call get_auth_type to determine the authentication type.
1.218 foxr 1451:
1452: my ($udom,$uname)=split(/:/,$tail);
1.222 foxr 1453: my $result = &get_auth_type($udom, $uname);
1.218 foxr 1454: if($result eq "nouser") {
1455: &Failure( $replyfd, "unknown_user\n", $userinput);
1456: } else {
1457: #
1.222 foxr 1458: # We only want to pass the second field from get_auth_type
1.218 foxr 1459: # for ^krb.. otherwise we'll be handing out the encrypted
1460: # password for internals e.g.
1461: #
1462: my ($type,$otherinfo) = split(/:/,$result);
1463: if($type =~ /^krb/) {
1464: $type = $result;
1.269 raeburn 1465: } else {
1466: $type .= ':';
1467: }
1.387 albertel 1468: &Reply( $replyfd, \$type, $userinput);
1.218 foxr 1469: }
1470:
1471: return 1;
1472: }
1473: ®ister_handler("currentauth", \&user_authorization_type, 1, 1, 0);
1474:
1475: # Process a request by a manager to push a hosts or domain table
1476: # to us. We pick apart the command and pass it on to the subs
1477: # that already exist to do this.
1478: #
1479: # Parameters:
1480: # $cmd - the actual keyword that invoked us.
1481: # $tail - the tail of the request that invoked us.
1482: # $client - File descriptor connected to the client
1483: # Returns:
1484: # 1 - Ok to continue processing.
1485: # 0 - Program should exit
1486: # Implicit Output:
1487: # a reply is written to the client.
1488: sub push_file_handler {
1489: my ($cmd, $tail, $client) = @_;
1.412 foxr 1490: &Debug("In push file handler");
1.218 foxr 1491: my $userinput = "$cmd:$tail";
1492:
1493: # At this time we only know that the IP of our partner is a valid manager
1494: # the code below is a hook to do further authentication (e.g. to resolve
1495: # spoofing).
1496:
1497: my $cert = &GetCertificate($userinput);
1.412 foxr 1498: if(&ValidManager($cert)) {
1499: &Debug("Valid manager: $client");
1.218 foxr 1500:
1501: # Now presumably we have the bona fides of both the peer host and the
1502: # process making the request.
1503:
1504: my $reply = &PushFile($userinput);
1.387 albertel 1505: &Reply($client, \$reply, $userinput);
1.218 foxr 1506:
1507: } else {
1.412 foxr 1508: &logthis("push_file_handler $client is not valid");
1.218 foxr 1509: &Failure( $client, "refused\n", $userinput);
1510: }
1.219 foxr 1511: return 1;
1.218 foxr 1512: }
1513: ®ister_handler("pushfile", \&push_file_handler, 1, 0, 1);
1514:
1.399 raeburn 1515: # The du_handler routine should be considered obsolete and is retained
1516: # for communication with legacy servers. Please see the du2_handler.
1.243 banghart 1517: #
1.399 raeburn 1518: # du - list the disk usage of a directory recursively.
1.243 banghart 1519: #
1520: # note: stolen code from the ls file handler
1521: # under construction by Rick Banghart
1522: # .
1523: # Parameters:
1524: # $cmd - The command that dispatched us (du).
1525: # $ududir - The directory path to list... I'm not sure what this
1526: # is relative as things like ls:. return e.g.
1527: # no_such_dir.
1528: # $client - Socket open on the client.
1529: # Returns:
1530: # 1 - indicating that the daemon should not disconnect.
1531: # Side Effects:
1532: # The reply is written to $client.
1533: #
1534: sub du_handler {
1535: my ($cmd, $ududir, $client) = @_;
1.339 albertel 1536: ($ududir) = split(/:/,$ududir); # Make 'telnet' testing easier.
1.251 foxr 1537: my $userinput = "$cmd:$ududir";
1538:
1.245 albertel 1539: if ($ududir=~/\.\./ || $ududir!~m|^/home/httpd/|) {
1540: &Failure($client,"refused\n","$cmd:$ududir");
1541: return 1;
1542: }
1.249 foxr 1543: # Since $ududir could have some nasties in it,
1544: # we will require that ududir is a valid
1545: # directory. Just in case someone tries to
1546: # slip us a line like .;(cd /home/httpd rm -rf*)
1547: # etc.
1548: #
1549: if (-d $ududir) {
1.292 albertel 1550: my $total_size=0;
1551: my $code=sub {
1552: if ($_=~/\.\d+\./) { return;}
1553: if ($_=~/\.meta$/) { return;}
1.362 albertel 1554: if (-d $_) { return;}
1.292 albertel 1555: $total_size+=(stat($_))[7];
1556: };
1.295 raeburn 1557: chdir($ududir);
1.292 albertel 1558: find($code,$ududir);
1559: $total_size=int($total_size/1024);
1.387 albertel 1560: &Reply($client,\$total_size,"$cmd:$ududir");
1.249 foxr 1561: } else {
1.251 foxr 1562: &Failure($client, "bad_directory:$ududir\n","$cmd:$ududir");
1.249 foxr 1563: }
1.243 banghart 1564: return 1;
1565: }
1566: ®ister_handler("du", \&du_handler, 0, 1, 0);
1.218 foxr 1567:
1.399 raeburn 1568: # Please also see the du_handler, which is obsoleted by du2.
1569: # du2_handler differs from du_handler in that required path to directory
1570: # provided by &propath() is prepended in the handler instead of on the
1571: # client side.
1.239 foxr 1572: #
1.399 raeburn 1573: # du2 - list the disk usage of a directory recursively.
1574: #
1575: # Parameters:
1576: # $cmd - The command that dispatched us (du).
1577: # $tail - The tail of the request that invoked us.
1578: # $tail is a : separated list of the following:
1579: # - $ududir - directory path to list (before prepending)
1580: # - $getpropath = 1 if &propath() should prepend
1581: # - $uname - username to use for &propath or user dir
1582: # - $udom - domain to use for &propath or user dir
1583: # All are escaped.
1584: # $client - Socket open on the client.
1585: # Returns:
1586: # 1 - indicating that the daemon should not disconnect.
1587: # Side Effects:
1588: # The reply is written to $client.
1589: #
1590:
1591: sub du2_handler {
1592: my ($cmd, $tail, $client) = @_;
1593: my ($ududir,$getpropath,$uname,$udom) = map { &unescape($_) } (split(/:/, $tail));
1594: my $userinput = "$cmd:$tail";
1595: if (($ududir=~/\.\./) || (($ududir!~m|^/home/httpd/|) && (!$getpropath))) {
1596: &Failure($client,"refused\n","$cmd:$tail");
1597: return 1;
1598: }
1599: if ($getpropath) {
1600: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1601: $ududir = &propath($udom,$uname).'/'.$ududir;
1602: } else {
1603: &Failure($client,"refused\n","$cmd:$tail");
1604: return 1;
1605: }
1606: }
1607: # Since $ududir could have some nasties in it,
1608: # we will require that ududir is a valid
1609: # directory. Just in case someone tries to
1610: # slip us a line like .;(cd /home/httpd rm -rf*)
1611: # etc.
1612: #
1613: if (-d $ududir) {
1614: my $total_size=0;
1615: my $code=sub {
1616: if ($_=~/\.\d+\./) { return;}
1617: if ($_=~/\.meta$/) { return;}
1618: if (-d $_) { return;}
1619: $total_size+=(stat($_))[7];
1620: };
1621: chdir($ududir);
1622: find($code,$ududir);
1623: $total_size=int($total_size/1024);
1624: &Reply($client,\$total_size,"$cmd:$ududir");
1625: } else {
1626: &Failure($client, "bad_directory:$ududir\n","$cmd:$tail");
1627: }
1628: return 1;
1629: }
1630: ®ister_handler("du2", \&du2_handler, 0, 1, 0);
1631:
1632: #
1633: # The ls_handler routine should be considered obsolete and is retained
1634: # for communication with legacy servers. Please see the ls3_handler.
1.280 matthew 1635: #
1.239 foxr 1636: # ls - list the contents of a directory. For each file in the
1637: # selected directory the filename followed by the full output of
1638: # the stat function is returned. The returned info for each
1639: # file are separated by ':'. The stat fields are separated by &'s.
1.529 raeburn 1640: #
1641: # If the requested path contains /../ or is:
1642: #
1643: # 1. for a directory, and the path does not begin with one of:
1.530 raeburn 1644: # (a) /home/httpd/html/res/<domain>
1.539 raeburn 1645: # (b) /home/httpd/html/userfiles/
1.529 raeburn 1646: # (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
1647: # or is:
1648: #
1.538 raeburn 1649: # 2. for a file, and the path (after prepending) does not begin with one of:
1.539 raeburn 1650: # (a) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
1651: # (b) /home/httpd/html/res/<domain>/<username>/
1652: # (c) /home/httpd/html/userfiles/<domain>/<username>/
1.529 raeburn 1653: #
1654: # the response will be "refused".
1655: #
1.239 foxr 1656: # Parameters:
1657: # $cmd - The command that dispatched us (ls).
1658: # $ulsdir - The directory path to list... I'm not sure what this
1659: # is relative as things like ls:. return e.g.
1660: # no_such_dir.
1661: # $client - Socket open on the client.
1662: # Returns:
1663: # 1 - indicating that the daemon should not disconnect.
1664: # Side Effects:
1665: # The reply is written to $client.
1666: #
1667: sub ls_handler {
1.280 matthew 1668: # obsoleted by ls2_handler
1.239 foxr 1669: my ($cmd, $ulsdir, $client) = @_;
1670:
1671: my $userinput = "$cmd:$ulsdir";
1672:
1673: my $obs;
1674: my $rights;
1675: my $ulsout='';
1676: my $ulsfn;
1.529 raeburn 1677: if ($ulsdir =~m{/\.\./}) {
1678: &Failure($client,"refused\n",$userinput);
1679: return 1;
1680: }
1.239 foxr 1681: if (-e $ulsdir) {
1682: if(-d $ulsdir) {
1.539 raeburn 1683: unless (($ulsdir =~ m{^/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
1684: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/userfiles})) {
1.529 raeburn 1685: &Failure($client,"refused\n",$userinput);
1686: return 1;
1687: }
1.239 foxr 1688: if (opendir(LSDIR,$ulsdir)) {
1689: while ($ulsfn=readdir(LSDIR)) {
1.291 albertel 1690: undef($obs);
1691: undef($rights);
1.239 foxr 1692: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1693: #We do some obsolete checking here
1694: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1695: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1696: my @obsolete=<FILE>;
1697: foreach my $obsolete (@obsolete) {
1.301 www 1698: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1.239 foxr 1699: if($obsolete =~ m|(<copyright>)(default)|) { $rights = 1; }
1700: }
1701: }
1702: $ulsout.=$ulsfn.'&'.join('&',@ulsstats);
1703: if($obs eq '1') { $ulsout.="&1"; }
1704: else { $ulsout.="&0"; }
1705: if($rights eq '1') { $ulsout.="&1:"; }
1706: else { $ulsout.="&0:"; }
1707: }
1708: closedir(LSDIR);
1709: }
1710: } else {
1.539 raeburn 1711: unless (($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) ||
1712: ($ulsdir =~ m{^/home/httpd/html/(?:res|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/})) {
1.529 raeburn 1713: &Failure($client,"refused\n",$userinput);
1714: return 1;
1715: }
1.239 foxr 1716: my @ulsstats=stat($ulsdir);
1717: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1718: }
1719: } else {
1720: $ulsout='no_such_dir';
1721: }
1722: if ($ulsout eq '') { $ulsout='empty'; }
1.387 albertel 1723: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1.239 foxr 1724:
1725: return 1;
1726:
1727: }
1728: ®ister_handler("ls", \&ls_handler, 0, 1, 0);
1729:
1.399 raeburn 1730: # The ls2_handler routine should be considered obsolete and is retained
1731: # for communication with legacy servers. Please see the ls3_handler.
1732: # Please also see the ls_handler, which was itself obsoleted by ls2.
1.280 matthew 1733: # ls2_handler differs from ls_handler in that it escapes its return
1734: # values before concatenating them together with ':'s.
1735: #
1736: # ls2 - list the contents of a directory. For each file in the
1737: # selected directory the filename followed by the full output of
1738: # the stat function is returned. The returned info for each
1739: # file are separated by ':'. The stat fields are separated by &'s.
1.529 raeburn 1740: #
1741: # If the requested path contains /../ or is:
1742: #
1743: # 1. for a directory, and the path does not begin with one of:
1.530 raeburn 1744: # (a) /home/httpd/html/res/<domain>
1.539 raeburn 1745: # (b) /home/httpd/html/userfiles/
1.529 raeburn 1746: # (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
1747: # or is:
1748: #
1.538 raeburn 1749: # 2. for a file, and the path (after prepending) does not begin with one of:
1.539 raeburn 1750: # (a) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
1751: # (b) /home/httpd/html/res/<domain>/<username>/
1752: # (c) /home/httpd/html/userfiles/<domain>/<username>/
1.529 raeburn 1753: #
1754: # the response will be "refused".
1755: #
1.280 matthew 1756: # Parameters:
1757: # $cmd - The command that dispatched us (ls).
1758: # $ulsdir - The directory path to list... I'm not sure what this
1759: # is relative as things like ls:. return e.g.
1760: # no_such_dir.
1761: # $client - Socket open on the client.
1762: # Returns:
1763: # 1 - indicating that the daemon should not disconnect.
1764: # Side Effects:
1765: # The reply is written to $client.
1766: #
1767: sub ls2_handler {
1768: my ($cmd, $ulsdir, $client) = @_;
1769:
1770: my $userinput = "$cmd:$ulsdir";
1771:
1772: my $obs;
1773: my $rights;
1774: my $ulsout='';
1775: my $ulsfn;
1.529 raeburn 1776: if ($ulsdir =~m{/\.\./}) {
1777: &Failure($client,"refused\n",$userinput);
1778: return 1;
1779: }
1.280 matthew 1780: if (-e $ulsdir) {
1781: if(-d $ulsdir) {
1.539 raeburn 1782: unless (($ulsdir =~ m{^/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
1783: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/userfiles})) {
1.529 raeburn 1784: &Failure($client,"refused\n","$userinput");
1785: return 1;
1786: }
1.280 matthew 1787: if (opendir(LSDIR,$ulsdir)) {
1788: while ($ulsfn=readdir(LSDIR)) {
1.291 albertel 1789: undef($obs);
1790: undef($rights);
1.280 matthew 1791: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1792: #We do some obsolete checking here
1793: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1794: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1795: my @obsolete=<FILE>;
1796: foreach my $obsolete (@obsolete) {
1.301 www 1797: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1.280 matthew 1798: if($obsolete =~ m|(<copyright>)(default)|) {
1799: $rights = 1;
1800: }
1801: }
1802: }
1803: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1804: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1805: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1806: $ulsout.= &escape($tmp).':';
1807: }
1808: closedir(LSDIR);
1809: }
1810: } else {
1.539 raeburn 1811: unless (($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) ||
1812: ($ulsdir =~ m{^/home/httpd/html/(?:res|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/})) {
1.529 raeburn 1813: &Failure($client,"refused\n",$userinput);
1814: return 1;
1815: }
1.280 matthew 1816: my @ulsstats=stat($ulsdir);
1817: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1818: }
1819: } else {
1820: $ulsout='no_such_dir';
1821: }
1822: if ($ulsout eq '') { $ulsout='empty'; }
1.387 albertel 1823: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1.280 matthew 1824: return 1;
1825: }
1826: ®ister_handler("ls2", \&ls2_handler, 0, 1, 0);
1.399 raeburn 1827: #
1828: # ls3 - list the contents of a directory. For each file in the
1829: # selected directory the filename followed by the full output of
1830: # the stat function is returned. The returned info for each
1831: # file are separated by ':'. The stat fields are separated by &'s.
1.529 raeburn 1832: #
1833: # If the requested path (after prepending) contains /../ or is:
1834: #
1835: # 1. for a directory, and the path does not begin with one of:
1.530 raeburn 1836: # (a) /home/httpd/html/res/<domain>
1.539 raeburn 1837: # (b) /home/httpd/html/userfiles/
1.529 raeburn 1838: # (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
1.539 raeburn 1839: # (d) /home/httpd/html/priv/<domain> and client is the homeserver
1.529 raeburn 1840: #
1.530 raeburn 1841: # or is:
1.529 raeburn 1842: #
1.538 raeburn 1843: # 2. for a file, and the path (after prepending) does not begin with one of:
1.539 raeburn 1844: # (a) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
1845: # (b) /home/httpd/html/res/<domain>/<username>/
1846: # (c) /home/httpd/html/userfiles/<domain>/<username>/
1847: # (d) /home/httpd/html/priv/<domain>/<username>/ and client is the homeserver
1.529 raeburn 1848: #
1849: # the response will be "refused".
1850: #
1.399 raeburn 1851: # Parameters:
1852: # $cmd - The command that dispatched us (ls).
1853: # $tail - The tail of the request that invoked us.
1854: # $tail is a : separated list of the following:
1855: # - $ulsdir - directory path to list (before prepending)
1856: # - $getpropath = 1 if &propath() should prepend
1857: # - $getuserdir = 1 if path to user dir in lonUsers should
1858: # prepend
1859: # - $alternate_root - path to prepend
1860: # - $uname - username to use for &propath or user dir
1861: # - $udom - domain to use for &propath or user dir
1862: # All of these except $getpropath and &getuserdir are escaped.
1863: # no_such_dir.
1864: # $client - Socket open on the client.
1865: # Returns:
1866: # 1 - indicating that the daemon should not disconnect.
1867: # Side Effects:
1868: # The reply is written to $client.
1869: #
1870:
1871: sub ls3_handler {
1872: my ($cmd, $tail, $client) = @_;
1873: my $userinput = "$cmd:$tail";
1874: my ($ulsdir,$getpropath,$getuserdir,$alternate_root,$uname,$udom) =
1875: split(/:/,$tail);
1876: if (defined($ulsdir)) {
1877: $ulsdir = &unescape($ulsdir);
1878: }
1879: if (defined($alternate_root)) {
1880: $alternate_root = &unescape($alternate_root);
1881: }
1882: if (defined($uname)) {
1883: $uname = &unescape($uname);
1884: }
1885: if (defined($udom)) {
1886: $udom = &unescape($udom);
1887: }
1888:
1889: my $dir_root = $perlvar{'lonDocRoot'};
1.529 raeburn 1890: if (($getpropath) || ($getuserdir)) {
1.399 raeburn 1891: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1892: $dir_root = &propath($udom,$uname);
1893: $dir_root =~ s/\/$//;
1894: } else {
1.529 raeburn 1895: &Failure($client,"refused\n",$userinput);
1.399 raeburn 1896: return 1;
1897: }
1.400 raeburn 1898: } elsif ($alternate_root ne '') {
1.399 raeburn 1899: $dir_root = $alternate_root;
1900: }
1.408 raeburn 1901: if (($dir_root ne '') && ($dir_root ne '/')) {
1.400 raeburn 1902: if ($ulsdir =~ /^\//) {
1903: $ulsdir = $dir_root.$ulsdir;
1904: } else {
1905: $ulsdir = $dir_root.'/'.$ulsdir;
1906: }
1.399 raeburn 1907: }
1.529 raeburn 1908: if ($ulsdir =~m{/\.\./}) {
1909: &Failure($client,"refused\n",$userinput);
1910: return 1;
1911: }
1912: my $islocal;
1913: my @machine_ids = &Apache::lonnet::current_machine_ids();
1914: if (grep(/^\Q$clientname\E$/,@machine_ids)) {
1915: $islocal = 1;
1916: }
1.399 raeburn 1917: my $obs;
1918: my $rights;
1919: my $ulsout='';
1920: my $ulsfn;
1.547 raeburn 1921:
1922: my ($crscheck,$toplevel,$currdom,$currnum,$skip);
1923: unless ($islocal) {
1924: my ($major,$minor) = split(/\./,$clientversion);
1925: if (($major < 2) || ($major == 2 && $minor < 12)) {
1926: $crscheck = 1;
1927: }
1928: }
1.399 raeburn 1929: if (-e $ulsdir) {
1930: if(-d $ulsdir) {
1.529 raeburn 1931: unless (($getpropath) || ($getuserdir) ||
1.539 raeburn 1932: ($ulsdir =~ m{^/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
1933: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/userfiles}) ||
1934: (($ulsdir =~ m{^/home/httpd/html/priv/$LONCAPA::match_domain}) && ($islocal))) {
1.529 raeburn 1935: &Failure($client,"refused\n",$userinput);
1936: return 1;
1937: }
1.547 raeburn 1938: if (($crscheck) &&
1939: ($ulsdir =~ m{^/home/httpd/html/res/($LONCAPA::match_domain)(/?$|/$LONCAPA::match_courseid)})) {
1940: ($currdom,my $posscnum) = ($1,$2);
1941: if (($posscnum eq '') || ($posscnum eq '/')) {
1942: $toplevel = 1;
1943: } else {
1944: $posscnum =~ s{^/+}{};
1945: if (&LONCAPA::Lond::is_course($currdom,$posscnum)) {
1946: $skip = 1;
1947: }
1948: }
1949: }
1950: if ((!$skip) && (opendir(LSDIR,$ulsdir))) {
1.399 raeburn 1951: while ($ulsfn=readdir(LSDIR)) {
1.547 raeburn 1952: if (($crscheck) && ($toplevel) && ($currdom ne '') &&
1953: ($ulsfn =~ /^$LONCAPA::match_courseid$/) && (-d "$ulsdir/$ulsfn")) {
1954: if (&LONCAPA::Lond::is_course($currdom,$ulsfn)) {
1955: next;
1956: }
1957: }
1.399 raeburn 1958: undef($obs);
1959: undef($rights);
1960: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1961: #We do some obsolete checking here
1962: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1963: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1964: my @obsolete=<FILE>;
1965: foreach my $obsolete (@obsolete) {
1966: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1967: if($obsolete =~ m|(<copyright>)(default)|) {
1968: $rights = 1;
1969: }
1970: }
1971: }
1972: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1973: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1974: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1975: $ulsout.= &escape($tmp).':';
1976: }
1977: closedir(LSDIR);
1978: }
1979: } else {
1.529 raeburn 1980: unless (($getpropath) || ($getuserdir) ||
1.539 raeburn 1981: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) ||
1982: ($ulsdir =~ m{^/home/httpd/html/(?:res|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/}) ||
1983: (($ulsdir =~ m{^/home/httpd/html/priv/$LONCAPA::match_domain/$LONCAPA::match_name/}) && ($islocal))) {
1.529 raeburn 1984: &Failure($client,"refused\n",$userinput);
1985: return 1;
1986: }
1.399 raeburn 1987: my @ulsstats=stat($ulsdir);
1988: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1989: }
1990: } else {
1991: $ulsout='no_such_dir';
1.400 raeburn 1992: }
1993: if ($ulsout eq '') { $ulsout='empty'; }
1994: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1995: return 1;
1.399 raeburn 1996: }
1997: ®ister_handler("ls3", \&ls3_handler, 0, 1, 0);
1.280 matthew 1998:
1.477 raeburn 1999: sub read_lonnet_global {
2000: my ($cmd,$tail,$client) = @_;
2001: my $userinput = "$cmd:$tail";
2002: my $requested = &Apache::lonnet::thaw_unescape($tail);
2003: my $result;
1.480 raeburn 2004: my %packagevars = (
2005: spareid => \%Apache::lonnet::spareid,
2006: perlvar => \%Apache::lonnet::perlvar,
2007: );
2008: my %limit_to = (
2009: perlvar => {
1.531 raeburn 2010: lonOtherAuthen => 1,
2011: lonBalancer => 1,
2012: lonVersion => 1,
2013: lonAdmEMail => 1,
2014: lonSupportEMail => 1,
2015: lonSysEMail => 1,
2016: lonHostID => 1,
2017: lonRole => 1,
2018: lonDefDomain => 1,
2019: lonLoadLim => 1,
2020: lonUserLoadLim => 1,
1.480 raeburn 2021: }
2022: );
1.477 raeburn 2023: if (ref($requested) eq 'HASH') {
2024: foreach my $what (keys(%{$requested})) {
2025: my $response;
1.480 raeburn 2026: my $items = {};
2027: if (exists($packagevars{$what})) {
2028: if (ref($limit_to{$what}) eq 'HASH') {
2029: foreach my $varname (keys(%{$packagevars{$what}})) {
2030: if ($limit_to{$what}{$varname}) {
2031: $items->{$varname} = $packagevars{$what}{$varname};
2032: }
2033: }
2034: } else {
2035: $items = $packagevars{$what};
1.477 raeburn 2036: }
1.480 raeburn 2037: if ($what eq 'perlvar') {
2038: if (!exists($packagevars{$what}{'lonBalancer'})) {
1.559 raeburn 2039: if ($dist =~ /^(centos|rhes|fedora|scientific|oracle)/) {
1.480 raeburn 2040: my $othervarref=LONCAPA::Configuration::read_conf('httpd.conf');
2041: if (ref($othervarref) eq 'HASH') {
2042: $items->{'lonBalancer'} = $othervarref->{'lonBalancer'};
2043: }
2044: }
2045: }
1.477 raeburn 2046: }
1.480 raeburn 2047: $response = &Apache::lonnet::freeze_escape($items);
1.477 raeburn 2048: }
1.478 raeburn 2049: $result .= &escape($what).'='.$response.'&';
1.477 raeburn 2050: }
2051: }
2052: $result =~ s/\&$//;
2053: &Reply($client,\$result,$userinput);
2054: return 1;
2055: }
2056: ®ister_handler("readlonnetglobal", \&read_lonnet_global, 0, 1, 0);
2057:
1.479 raeburn 2058: sub server_devalidatecache_handler {
2059: my ($cmd,$tail,$client) = @_;
2060: my $userinput = "$cmd:$tail";
1.503 raeburn 2061: my $items = &unescape($tail);
2062: my @cached = split(/\&/,$items);
2063: foreach my $key (@cached) {
2064: if ($key =~ /:/) {
2065: my ($name,$id) = map { &unescape($_); } split(/:/,$key);
2066: &Apache::lonnet::devalidate_cache_new($name,$id);
2067: }
2068: }
1.479 raeburn 2069: my $result = 'ok';
2070: &Reply($client,\$result,$userinput);
2071: return 1;
2072: }
1.481 raeburn 2073: ®ister_handler("devalidatecache", \&server_devalidatecache_handler, 0, 1, 0);
1.479 raeburn 2074:
1.410 raeburn 2075: sub server_timezone_handler {
2076: my ($cmd,$tail,$client) = @_;
2077: my $userinput = "$cmd:$tail";
2078: my $timezone;
2079: my $clockfile = '/etc/sysconfig/clock'; # Fedora/CentOS/SuSE
2080: my $tzfile = '/etc/timezone'; # Debian/Ubuntu
2081: if (-e $clockfile) {
2082: if (open(my $fh,"<$clockfile")) {
2083: while (<$fh>) {
2084: next if (/^[\#\s]/);
2085: if (/^(?:TIME)?ZONE\s*=\s*['"]?\s*([\w\/]+)/) {
2086: $timezone = $1;
2087: last;
2088: }
2089: }
2090: close($fh);
2091: }
2092: } elsif (-e $tzfile) {
2093: if (open(my $fh,"<$tzfile")) {
2094: $timezone = <$fh>;
2095: close($fh);
2096: chomp($timezone);
2097: if ($timezone =~ m{^Etc/(\w+)$}) {
2098: $timezone = $1;
2099: }
2100: }
2101: }
2102: &Reply($client,\$timezone,$userinput); # This supports debug logging.
2103: return 1;
2104: }
2105: ®ister_handler("servertimezone", \&server_timezone_handler, 0, 1, 0);
2106:
1.413 raeburn 2107: sub server_loncaparev_handler {
2108: my ($cmd,$tail,$client) = @_;
2109: my $userinput = "$cmd:$tail";
2110: &Reply($client,\$perlvar{'lonVersion'},$userinput);
2111: return 1;
2112: }
2113: ®ister_handler("serverloncaparev", \&server_loncaparev_handler, 0, 1, 0);
2114:
1.448 raeburn 2115: sub server_homeID_handler {
2116: my ($cmd,$tail,$client) = @_;
2117: my $userinput = "$cmd:$tail";
2118: &Reply($client,\$perlvar{'lonHostID'},$userinput);
2119: return 1;
2120: }
2121: ®ister_handler("serverhomeID", \&server_homeID_handler, 0, 1, 0);
2122:
1.471 raeburn 2123: sub server_distarch_handler {
2124: my ($cmd,$tail,$client) = @_;
2125: my $userinput = "$cmd:$tail";
2126: my $reply = &distro_and_arch();
2127: &Reply($client,\$reply,$userinput);
2128: return 1;
2129: }
2130: ®ister_handler("serverdistarch", \&server_distarch_handler, 0, 1, 0);
2131:
1.523 raeburn 2132: sub server_certs_handler {
2133: my ($cmd,$tail,$client) = @_;
2134: my $userinput = "$cmd:$tail";
1.548 raeburn 2135: my $hostname = &Apache::lonnet::hostname($perlvar{'lonHostID'});
2136: my $result = &LONCAPA::Lond::server_certs(\%perlvar,$perlvar{'lonHostID'},$hostname);
1.523 raeburn 2137: &Reply($client,\$result,$userinput);
2138: return;
2139: }
2140: ®ister_handler("servercerts", \&server_certs_handler, 0, 1, 0);
2141:
1.218 foxr 2142: # Process a reinit request. Reinit requests that either
2143: # lonc or lond be reinitialized so that an updated
2144: # host.tab or domain.tab can be processed.
2145: #
2146: # Parameters:
2147: # $cmd - the actual keyword that invoked us.
2148: # $tail - the tail of the request that invoked us.
2149: # $client - File descriptor connected to the client
2150: # Returns:
2151: # 1 - Ok to continue processing.
2152: # 0 - Program should exit
2153: # Implicit output:
2154: # a reply is sent to the client.
2155: #
2156: sub reinit_process_handler {
2157: my ($cmd, $tail, $client) = @_;
2158:
2159: my $userinput = "$cmd:$tail";
2160:
2161: my $cert = &GetCertificate($userinput);
2162: if(&ValidManager($cert)) {
2163: chomp($userinput);
2164: my $reply = &ReinitProcess($userinput);
1.387 albertel 2165: &Reply( $client, \$reply, $userinput);
1.218 foxr 2166: } else {
2167: &Failure( $client, "refused\n", $userinput);
2168: }
2169: return 1;
2170: }
2171: ®ister_handler("reinit", \&reinit_process_handler, 1, 0, 1);
2172:
2173: # Process the editing script for a table edit operation.
2174: # the editing operation must be encrypted and requested by
2175: # a manager host.
2176: #
2177: # Parameters:
2178: # $cmd - the actual keyword that invoked us.
2179: # $tail - the tail of the request that invoked us.
2180: # $client - File descriptor connected to the client
2181: # Returns:
2182: # 1 - Ok to continue processing.
2183: # 0 - Program should exit
2184: # Implicit output:
2185: # a reply is sent to the client.
2186: #
2187: sub edit_table_handler {
2188: my ($command, $tail, $client) = @_;
2189:
2190: my $userinput = "$command:$tail";
2191:
2192: my $cert = &GetCertificate($userinput);
2193: if(&ValidManager($cert)) {
2194: my($filetype, $script) = split(/:/, $tail);
2195: if (($filetype eq "hosts") ||
2196: ($filetype eq "domain")) {
2197: if($script ne "") {
2198: &Reply($client, # BUGBUG - EditFile
2199: &EditFile($userinput), # could fail.
2200: $userinput);
2201: } else {
2202: &Failure($client,"refused\n",$userinput);
2203: }
2204: } else {
2205: &Failure($client,"refused\n",$userinput);
2206: }
2207: } else {
2208: &Failure($client,"refused\n",$userinput);
2209: }
2210: return 1;
2211: }
1.263 albertel 2212: ®ister_handler("edit", \&edit_table_handler, 1, 0, 1);
1.218 foxr 2213:
1.220 foxr 2214: #
2215: # Authenticate a user against the LonCAPA authentication
2216: # database. Note that there are several authentication
2217: # possibilities:
2218: # - unix - The user can be authenticated against the unix
2219: # password file.
2220: # - internal - The user can be authenticated against a purely
2221: # internal per user password file.
2222: # - kerberos - The user can be authenticated against either a kerb4 or kerb5
2223: # ticket granting authority.
2224: # - user - The person tailoring LonCAPA can supply a user authentication
2225: # mechanism that is per system.
2226: #
2227: # Parameters:
2228: # $cmd - The command that got us here.
2229: # $tail - Tail of the command (remaining parameters).
2230: # $client - File descriptor connected to client.
2231: # Returns
2232: # 0 - Requested to exit, caller should shut down.
2233: # 1 - Continue processing.
2234: # Implicit inputs:
2235: # The authentication systems describe above have their own forms of implicit
2236: # input into the authentication process that are described above.
2237: #
2238: sub authenticate_handler {
2239: my ($cmd, $tail, $client) = @_;
2240:
2241:
2242: # Regenerate the full input line
2243:
2244: my $userinput = $cmd.":".$tail;
2245:
2246: # udom - User's domain.
2247: # uname - Username.
2248: # upass - User's password.
1.396 raeburn 2249: # checkdefauth - Pass to validate_user() to try authentication
2250: # with default auth type(s) if no user account.
1.447 raeburn 2251: # clientcancheckhost - Passed by clients with functionality in lonauth.pm
2252: # to check if session can be hosted.
1.220 foxr 2253:
1.447 raeburn 2254: my ($udom, $uname, $upass, $checkdefauth, $clientcancheckhost)=split(/:/,$tail);
1.399 raeburn 2255: &Debug(" Authenticate domain = $udom, user = $uname, password = $upass, checkdefauth = $checkdefauth");
1.220 foxr 2256: chomp($upass);
2257: $upass=&unescape($upass);
2258:
1.396 raeburn 2259: my $pwdcorrect = &validate_user($udom,$uname,$upass,$checkdefauth);
1.220 foxr 2260: if($pwdcorrect) {
1.447 raeburn 2261: my $canhost = 1;
2262: unless ($clientcancheckhost) {
1.448 raeburn 2263: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
2264: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1.452 raeburn 2265: my @intdoms;
2266: my $internet_names = &Apache::lonnet::get_internet_names($clientname);
2267: if (ref($internet_names) eq 'ARRAY') {
2268: @intdoms = @{$internet_names};
2269: }
1.448 raeburn 2270: unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
1.447 raeburn 2271: my ($remote,$hosted);
2272: my $remotesession = &get_usersession_config($udom,'remotesession');
2273: if (ref($remotesession) eq 'HASH') {
1.525 raeburn 2274: $remote = $remotesession->{'remote'};
1.447 raeburn 2275: }
1.448 raeburn 2276: my $hostedsession = &get_usersession_config($clienthomedom,'hostedsession');
1.447 raeburn 2277: if (ref($hostedsession) eq 'HASH') {
2278: $hosted = $hostedsession->{'hosted'};
2279: }
1.448 raeburn 2280: $canhost = &Apache::lonnet::can_host_session($udom,$clientname,
1.492 droeschl 2281: $clientversion,
1.447 raeburn 2282: $remote,$hosted);
2283: }
2284: }
2285: if ($canhost) {
2286: &Reply( $client, "authorized\n", $userinput);
2287: } else {
2288: &Reply( $client, "not_allowed_to_host\n", $userinput);
2289: }
1.220 foxr 2290: #
2291: # Bad credentials: Failed to authorize
2292: #
2293: } else {
2294: &Failure( $client, "non_authorized\n", $userinput);
2295: }
2296:
2297: return 1;
2298: }
1.263 albertel 2299: ®ister_handler("auth", \&authenticate_handler, 1, 1, 0);
1.214 foxr 2300:
1.222 foxr 2301: #
2302: # Change a user's password. Note that this function is complicated by
2303: # the fact that a user may be authenticated in more than one way:
2304: # At present, we are not able to change the password for all types of
2305: # authentication methods. Only for:
2306: # unix - unix password or shadow passoword style authentication.
2307: # local - Locally written authentication mechanism.
2308: # For now, kerb4 and kerb5 password changes are not supported and result
2309: # in an error.
2310: # FUTURE WORK:
2311: # Support kerberos passwd changes?
2312: # Parameters:
2313: # $cmd - The command that got us here.
2314: # $tail - Tail of the command (remaining parameters).
2315: # $client - File descriptor connected to client.
2316: # Returns
2317: # 0 - Requested to exit, caller should shut down.
2318: # 1 - Continue processing.
2319: # Implicit inputs:
2320: # The authentication systems describe above have their own forms of implicit
2321: # input into the authentication process that are described above.
2322: sub change_password_handler {
2323: my ($cmd, $tail, $client) = @_;
2324:
2325: my $userinput = $cmd.":".$tail; # Reconstruct client's string.
2326:
2327: #
2328: # udom - user's domain.
2329: # uname - Username.
2330: # upass - Current password.
2331: # npass - New password.
1.346 raeburn 2332: # context - Context in which this was called
2333: # (preferences or reset_by_email).
1.428 raeburn 2334: # lonhost - HostID of server where request originated
1.222 foxr 2335:
1.428 raeburn 2336: my ($udom,$uname,$upass,$npass,$context,$lonhost)=split(/:/,$tail);
1.222 foxr 2337:
2338: $upass=&unescape($upass);
2339: $npass=&unescape($npass);
2340: &Debug("Trying to change password for $uname");
2341:
2342: # First require that the user can be authenticated with their
1.346 raeburn 2343: # old password unless context was 'reset_by_email':
2344:
1.428 raeburn 2345: my ($validated,$failure);
1.346 raeburn 2346: if ($context eq 'reset_by_email') {
1.428 raeburn 2347: if ($lonhost eq '') {
2348: $failure = 'invalid_client';
2349: } else {
2350: $validated = 1;
2351: }
1.346 raeburn 2352: } else {
2353: $validated = &validate_user($udom, $uname, $upass);
2354: }
1.222 foxr 2355: if($validated) {
2356: my $realpasswd = &get_auth_type($udom, $uname); # Defined since authd.
2357: my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
1.558 raeburn 2358: my $notunique;
1.222 foxr 2359: if ($howpwd eq 'internal') {
2360: &Debug("internal auth");
1.518 raeburn 2361: my $ncpass = &hash_passwd($udom,$npass);
1.558 raeburn 2362: my (undef,$method,@rest) = split(/!/,$contentpwd);
2363: if ($method eq 'bcrypt') {
2364: my %passwdconf = &Apache::lonnet::get_passwdconf($udom);
2365: if (($passwdconf{'numsaved'}) && ($passwdconf{'numsaved'} =~ /^\d+$/)) {
2366: my @oldpasswds;
2367: my $userpath = &propath($udom,$uname);
2368: my $fullpath = $userpath.'/oldpasswds';
2369: if (-d $userpath) {
2370: my @oldfiles;
2371: if (-e $fullpath) {
2372: if (opendir(my $dir,$fullpath)) {
2373: (@oldfiles) = grep(/^\d+$/,readdir($dir));
2374: closedir($dir);
2375: }
2376: if (@oldfiles) {
2377: @oldfiles = sort { $b <=> $a } (@oldfiles);
2378: my $numremoved = 0;
2379: for (my $i=0; $i<@oldfiles; $i++) {
2380: if ($i>=$passwdconf{'numsaved'}) {
2381: if (-f "$fullpath/$oldfiles[$i]") {
2382: if (unlink("$fullpath/$oldfiles[$i]")) {
2383: $numremoved ++;
2384: }
2385: }
2386: } elsif (open(my $fh,'<',"$fullpath/$oldfiles[$i]")) {
2387: while (my $line = <$fh>) {
2388: push(@oldpasswds,$line);
2389: }
2390: close($fh);
2391: }
2392: }
2393: if ($numremoved) {
2394: &logthis("unlinked $numremoved old password files for $uname:$udom");
2395: }
2396: }
2397: }
2398: push(@oldpasswds,$contentpwd);
2399: foreach my $item (@oldpasswds) {
2400: my (undef,$method,@rest) = split(/!/,$item);
2401: if ($method eq 'bcrypt') {
2402: my $result = &hash_passwd($udom,$npass,@rest);
2403: if ($result eq $item) {
2404: $notunique = 1;
2405: last;
2406: }
2407: }
2408: }
2409: unless ($notunique) {
2410: unless (-e $fullpath) {
2411: if (&mkpath("$fullpath/")) {
2412: chmod(0700,$fullpath);
2413: }
2414: }
2415: if (-d $fullpath) {
2416: my $now = time;
2417: if (open(my $fh,'>',"$fullpath/$now")) {
2418: print $fh $contentpwd;
2419: close($fh);
2420: chmod(0400,"$fullpath/$now");
2421: }
2422: }
2423: }
2424: }
2425: }
2426: }
2427: if ($notunique) {
2428: my $msg="Result of password change for $uname:$udom - password matches one used before";
2429: if ($lonhost) {
2430: $msg .= " - request originated from: $lonhost";
2431: }
2432: &logthis($msg);
2433: &Reply($client, "prioruse\n", $userinput);
2434: } elsif (&rewrite_password_file($udom, $uname, "internal:$ncpass")) {
1.428 raeburn 2435: my $msg="Result of password change for $uname: pwchange_success";
2436: if ($lonhost) {
2437: $msg .= " - request originated from: $lonhost";
2438: }
2439: &logthis($msg);
1.518 raeburn 2440: &update_passwd_history($uname,$udom,$howpwd,$context);
1.222 foxr 2441: &Reply($client, "ok\n", $userinput);
2442: } else {
2443: &logthis("Unable to open $uname passwd "
2444: ."to change password");
2445: &Failure( $client, "non_authorized\n",$userinput);
2446: }
1.346 raeburn 2447: } elsif ($howpwd eq 'unix' && $context ne 'reset_by_email') {
1.287 foxr 2448: my $result = &change_unix_password($uname, $npass);
1.518 raeburn 2449: if ($result eq 'ok') {
2450: &update_passwd_history($uname,$udom,$howpwd,$context);
1.561 raeburn 2451: }
1.222 foxr 2452: &logthis("Result of password change for $uname: ".
1.287 foxr 2453: $result);
1.387 albertel 2454: &Reply($client, \$result, $userinput);
1.222 foxr 2455: } else {
2456: # this just means that the current password mode is not
2457: # one we know how to change (e.g the kerberos auth modes or
2458: # locally written auth handler).
2459: #
2460: &Failure( $client, "auth_mode_error\n", $userinput);
2461: }
1.224 foxr 2462: } else {
1.428 raeburn 2463: if ($failure eq '') {
2464: $failure = 'non_authorized';
2465: }
2466: &Failure( $client, "$failure\n", $userinput);
1.222 foxr 2467: }
2468:
2469: return 1;
2470: }
1.263 albertel 2471: ®ister_handler("passwd", \&change_password_handler, 1, 1, 0);
1.222 foxr 2472:
1.518 raeburn 2473: sub hash_passwd {
2474: my ($domain,$plainpass,@rest) = @_;
2475: my ($salt,$cost);
2476: if (@rest) {
2477: $cost = $rest[0];
2478: # salt is first 22 characters, base-64 encoded by bcrypt
2479: my $plainsalt = substr($rest[1],0,22);
2480: $salt = Crypt::Eksblowfish::Bcrypt::de_base64($plainsalt);
2481: } else {
1.533 raeburn 2482: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
2483: my $defaultcost = $domdefaults{'intauth_cost'};
1.518 raeburn 2484: if (($defaultcost eq '') || ($defaultcost =~ /D/)) {
2485: $cost = 10;
2486: } else {
2487: $cost = $defaultcost;
2488: }
2489: # Generate random 16-octet base64 salt
2490: $salt = "";
2491: $salt .= pack("C", int rand(256)) for 1..16;
2492: }
2493: my $hash = &Crypt::Eksblowfish::Bcrypt::bcrypt_hash({
2494: key_nul => 1,
2495: cost => $cost,
2496: salt => $salt,
2497: }, Digest::SHA::sha512(Encode::encode('UTF-8',$plainpass)));
2498:
2499: my $result = join("!", "", "bcrypt", sprintf("%02d",$cost),
2500: &Crypt::Eksblowfish::Bcrypt::en_base64($salt).
2501: &Crypt::Eksblowfish::Bcrypt::en_base64($hash));
2502: return $result;
2503: }
2504:
1.225 foxr 2505: #
2506: # Create a new user. User in this case means a lon-capa user.
2507: # The user must either already exist in some authentication realm
2508: # like kerberos or the /etc/passwd. If not, a user completely local to
2509: # this loncapa system is created.
2510: #
2511: # Parameters:
2512: # $cmd - The command that got us here.
2513: # $tail - Tail of the command (remaining parameters).
2514: # $client - File descriptor connected to client.
2515: # Returns
2516: # 0 - Requested to exit, caller should shut down.
2517: # 1 - Continue processing.
2518: # Implicit inputs:
2519: # The authentication systems describe above have their own forms of implicit
2520: # input into the authentication process that are described above.
2521: sub add_user_handler {
2522:
2523: my ($cmd, $tail, $client) = @_;
2524:
2525:
2526: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2527: my $userinput = $cmd.":".$tail; # Reconstruct the full request line.
2528:
2529: &Debug("cmd =".$cmd." $udom =".$udom." uname=".$uname);
2530:
2531:
2532: if($udom eq $currentdomainid) { # Reject new users for other domains...
2533:
2534: my $oldumask=umask(0077);
2535: chomp($npass);
2536: $npass=&unescape($npass);
2537: my $passfilename = &password_path($udom, $uname);
2538: &Debug("Password file created will be:".$passfilename);
2539: if (-e $passfilename) {
2540: &Failure( $client, "already_exists\n", $userinput);
2541: } else {
2542: my $fperror='';
1.264 albertel 2543: if (!&mkpath($passfilename)) {
2544: $fperror="error: ".($!+0)." mkdir failed while attempting "
2545: ."makeuser";
1.225 foxr 2546: }
2547: unless ($fperror) {
1.518 raeburn 2548: my $result=&make_passwd_file($uname,$udom,$umode,$npass,
2549: $passfilename,'makeuser');
1.390 raeburn 2550: &Reply($client,\$result, $userinput); #BUGBUG - could be fail
1.225 foxr 2551: } else {
1.387 albertel 2552: &Failure($client, \$fperror, $userinput);
1.225 foxr 2553: }
2554: }
2555: umask($oldumask);
2556: } else {
2557: &Failure($client, "not_right_domain\n",
2558: $userinput); # Even if we are multihomed.
2559:
2560: }
2561: return 1;
2562:
2563: }
2564: ®ister_handler("makeuser", \&add_user_handler, 1, 1, 0);
2565:
2566: #
2567: # Change the authentication method of a user. Note that this may
2568: # also implicitly change the user's password if, for example, the user is
2569: # joining an existing authentication realm. Known authentication realms at
2570: # this time are:
2571: # internal - Purely internal password file (only loncapa knows this user)
2572: # local - Institutionally written authentication module.
2573: # unix - Unix user (/etc/passwd with or without /etc/shadow).
2574: # kerb4 - kerberos version 4
2575: # kerb5 - kerberos version 5
2576: #
2577: # Parameters:
2578: # $cmd - The command that got us here.
2579: # $tail - Tail of the command (remaining parameters).
2580: # $client - File descriptor connected to client.
2581: # Returns
2582: # 0 - Requested to exit, caller should shut down.
2583: # 1 - Continue processing.
2584: # Implicit inputs:
2585: # The authentication systems describe above have their own forms of implicit
2586: # input into the authentication process that are described above.
1.287 foxr 2587: # NOTE:
2588: # This is also used to change the authentication credential values (e.g. passwd).
2589: #
1.225 foxr 2590: #
2591: sub change_authentication_handler {
2592:
2593: my ($cmd, $tail, $client) = @_;
2594:
2595: my $userinput = "$cmd:$tail"; # Reconstruct user input.
2596:
2597: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2598: &Debug("cmd = ".$cmd." domain= ".$udom."uname =".$uname." umode= ".$umode);
2599: if ($udom ne $currentdomainid) {
2600: &Failure( $client, "not_right_domain\n", $client);
2601: } else {
2602:
2603: chomp($npass);
2604:
2605: $npass=&unescape($npass);
1.261 foxr 2606: my $oldauth = &get_auth_type($udom, $uname); # Get old auth info.
1.225 foxr 2607: my $passfilename = &password_path($udom, $uname);
2608: if ($passfilename) { # Not allowed to create a new user!!
1.287 foxr 2609: # If just changing the unix passwd. need to arrange to run
1.502 raeburn 2610: # passwd since otherwise make_passwd_file will fail as
2611: # creation of unix authenticated users is no longer supported
2612: # except from the command line, when running make_domain_coordinator.pl
1.287 foxr 2613:
2614: if(($oldauth =~/^unix/) && ($umode eq "unix")) {
2615: my $result = &change_unix_password($uname, $npass);
2616: &logthis("Result of password change for $uname: ".$result);
2617: if ($result eq "ok") {
1.518 raeburn 2618: &update_passwd_history($uname,$udom,$umode,'changeuserauth');
1.390 raeburn 2619: &Reply($client, \$result);
1.288 albertel 2620: } else {
1.387 albertel 2621: &Failure($client, \$result);
1.287 foxr 2622: }
1.288 albertel 2623: } else {
1.518 raeburn 2624: my $result=&make_passwd_file($uname,$udom,$umode,$npass,
2625: $passfilename,'changeuserauth');
1.287 foxr 2626: #
2627: # If the current auth mode is internal, and the old auth mode was
2628: # unix, or krb*, and the user is an author for this domain,
2629: # re-run manage_permissions for that role in order to be able
2630: # to take ownership of the construction space back to www:www
2631: #
1.502 raeburn 2632:
2633:
1.387 albertel 2634: &Reply($client, \$result, $userinput);
1.261 foxr 2635: }
2636:
2637:
1.225 foxr 2638: } else {
1.251 foxr 2639: &Failure($client, "non_authorized\n", $userinput); # Fail the user now.
1.225 foxr 2640: }
2641: }
2642: return 1;
2643: }
2644: ®ister_handler("changeuserauth", \&change_authentication_handler, 1,1, 0);
2645:
1.518 raeburn 2646: sub update_passwd_history {
2647: my ($uname,$udom,$umode,$context) = @_;
2648: my $proname=&propath($udom,$uname);
2649: my $now = time;
2650: if (open(my $fh,">>$proname/passwd.log")) {
2651: print $fh "$now:$umode:$context\n";
2652: close($fh);
2653: }
2654: return;
2655: }
2656:
1.225 foxr 2657: #
2658: # Determines if this is the home server for a user. The home server
2659: # for a user will have his/her lon-capa passwd file. Therefore all we need
2660: # to do is determine if this file exists.
2661: #
2662: # Parameters:
2663: # $cmd - The command that got us here.
2664: # $tail - Tail of the command (remaining parameters).
2665: # $client - File descriptor connected to client.
2666: # Returns
2667: # 0 - Requested to exit, caller should shut down.
2668: # 1 - Continue processing.
2669: # Implicit inputs:
2670: # The authentication systems describe above have their own forms of implicit
2671: # input into the authentication process that are described above.
2672: #
2673: sub is_home_handler {
2674: my ($cmd, $tail, $client) = @_;
2675:
2676: my $userinput = "$cmd:$tail";
2677:
2678: my ($udom,$uname)=split(/:/,$tail);
2679: chomp($uname);
2680: my $passfile = &password_filename($udom, $uname);
2681: if($passfile) {
2682: &Reply( $client, "found\n", $userinput);
2683: } else {
2684: &Failure($client, "not_found\n", $userinput);
2685: }
2686: return 1;
2687: }
2688: ®ister_handler("home", \&is_home_handler, 0,1,0);
2689:
2690: #
1.434 www 2691: # Process an update request for a resource.
2692: # A resource has been modified that we hold a subscription to.
1.225 foxr 2693: # If the resource is not local, then we must update, or at least invalidate our
2694: # cached copy of the resource.
2695: # Parameters:
2696: # $cmd - The command that got us here.
2697: # $tail - Tail of the command (remaining parameters).
2698: # $client - File descriptor connected to client.
2699: # Returns
2700: # 0 - Requested to exit, caller should shut down.
2701: # 1 - Continue processing.
2702: # Implicit inputs:
2703: # The authentication systems describe above have their own forms of implicit
2704: # input into the authentication process that are described above.
2705: #
2706: sub update_resource_handler {
2707:
2708: my ($cmd, $tail, $client) = @_;
2709:
2710: my $userinput = "$cmd:$tail";
2711:
2712: my $fname= $tail; # This allows interactive testing
2713:
2714:
2715: my $ownership=ishome($fname);
2716: if ($ownership eq 'not_owner') {
2717: if (-e $fname) {
1.434 www 2718: # Delete preview file, if exists
2719: unlink("$fname.tmp");
2720: # Get usage stats
1.225 foxr 2721: my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
2722: $atime,$mtime,$ctime,$blksize,$blocks)=stat($fname);
2723: my $now=time;
2724: my $since=$now-$atime;
1.434 www 2725: # If the file has not been used within lonExpire seconds,
2726: # unsubscribe from it and delete local copy
1.225 foxr 2727: if ($since>$perlvar{'lonExpire'}) {
1.365 albertel 2728: my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
1.308 albertel 2729: &devalidate_meta_cache($fname);
1.225 foxr 2730: unlink("$fname");
1.334 albertel 2731: unlink("$fname.meta");
1.225 foxr 2732: } else {
1.434 www 2733: # Yes, this is in active use. Get a fresh copy. Since it might be in
2734: # very active use and huge (like a movie), copy it to "in.transfer" filename first.
1.225 foxr 2735: my $transname="$fname.in.transfer";
1.365 albertel 2736: my $remoteurl=&Apache::lonnet::reply("sub:$fname","$clientname");
1.225 foxr 2737: my $response;
1.537 raeburn 2738: # FIXME: cannot replicate files that take more than two minutes to transfer -- needs checking now 1200s timeout used
2739: # for LWP request.
2740: my $request=new HTTP::Request('GET',"$remoteurl");
2741: $response=&LONCAPA::LWPReq::makerequest($clientname,$request,$transname,\%perlvar,1200,0,1);
1.225 foxr 2742: if ($response->is_error()) {
1.541 raeburn 2743: my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
2744: &devalidate_meta_cache($fname);
2745: if (-e $transname) {
2746: unlink($transname);
2747: }
2748: unlink($fname);
1.225 foxr 2749: my $message=$response->status_line;
2750: &logthis("LWP GET: $message for $fname ($remoteurl)");
2751: } else {
2752: if ($remoteurl!~/\.meta$/) {
1.537 raeburn 2753: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2754: my $mresponse = &LONCAPA::LWPReq::makerequest($clientname,$mrequest,$fname.'.meta',\%perlvar,120,0,1);
2755: if ($mresponse->is_error()) {
2756: unlink($fname.'.meta');
1.225 foxr 2757: }
2758: }
1.434 www 2759: # we successfully transfered, copy file over to real name
1.225 foxr 2760: rename($transname,$fname);
1.308 albertel 2761: &devalidate_meta_cache($fname);
1.225 foxr 2762: }
2763: }
2764: &Reply( $client, "ok\n", $userinput);
2765: } else {
2766: &Failure($client, "not_found\n", $userinput);
2767: }
2768: } else {
2769: &Failure($client, "rejected\n", $userinput);
2770: }
2771: return 1;
2772: }
2773: ®ister_handler("update", \&update_resource_handler, 0 ,1, 0);
2774:
1.308 albertel 2775: sub devalidate_meta_cache {
2776: my ($url) = @_;
2777: use Cache::Memcached;
2778: my $memcache = new Cache::Memcached({'servers'=>['127.0.0.1:11211']});
1.365 albertel 2779: $url = &Apache::lonnet::declutter($url);
1.308 albertel 2780: $url =~ s-\.meta$--;
2781: my $id = &escape('meta:'.$url);
2782: $memcache->delete($id);
2783: }
2784:
1.225 foxr 2785: #
1.226 foxr 2786: # Fetch a user file from a remote server to the user's home directory
2787: # userfiles subdir.
1.225 foxr 2788: # Parameters:
2789: # $cmd - The command that got us here.
2790: # $tail - Tail of the command (remaining parameters).
2791: # $client - File descriptor connected to client.
2792: # Returns
2793: # 0 - Requested to exit, caller should shut down.
2794: # 1 - Continue processing.
2795: #
2796: sub fetch_user_file_handler {
2797:
2798: my ($cmd, $tail, $client) = @_;
2799:
2800: my $userinput = "$cmd:$tail";
2801: my $fname = $tail;
1.232 foxr 2802: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
1.225 foxr 2803: my $udir=&propath($udom,$uname).'/userfiles';
2804: unless (-e $udir) {
2805: mkdir($udir,0770);
2806: }
1.232 foxr 2807: Debug("fetch user file for $fname");
1.225 foxr 2808: if (-e $udir) {
2809: $ufile=~s/^[\.\~]+//;
1.232 foxr 2810:
2811: # IF necessary, create the path right down to the file.
2812: # Note that any regular files in the way of this path are
2813: # wiped out to deal with some earlier folly of mine.
2814:
1.267 raeburn 2815: if (!&mkpath($udir.'/'.$ufile)) {
1.264 albertel 2816: &Failure($client, "unable_to_create\n", $userinput);
1.232 foxr 2817: }
2818:
1.225 foxr 2819: my $destname=$udir.'/'.$ufile;
2820: my $transname=$udir.'/'.$ufile.'.in.transit';
1.476 raeburn 2821: my $clientprotocol=$Apache::lonnet::protocol{$clientname};
2822: $clientprotocol = 'http' if ($clientprotocol ne 'https');
1.486 raeburn 2823: my $clienthost = &Apache::lonnet::hostname($clientname);
2824: my $remoteurl=$clientprotocol.'://'.$clienthost.'/userfiles/'.$fname;
1.225 foxr 2825: my $response;
1.232 foxr 2826: Debug("Remote URL : $remoteurl Transfername $transname Destname: $destname");
1.537 raeburn 2827: my $request=new HTTP::Request('GET',"$remoteurl");
2828: my $verifycert = 1;
2829: my @machine_ids = &Apache::lonnet::current_machine_ids();
2830: if (grep(/^\Q$clientname\E$/,@machine_ids)) {
2831: $verifycert = 0;
2832: }
2833: $response = &LONCAPA::LWPReq::makerequest($clientname,$request,$transname,\%perlvar,1200,$verifycert);
1.225 foxr 2834: if ($response->is_error()) {
2835: unlink($transname);
2836: my $message=$response->status_line;
2837: &logthis("LWP GET: $message for $fname ($remoteurl)");
2838: &Failure($client, "failed\n", $userinput);
2839: } else {
1.232 foxr 2840: Debug("Renaming $transname to $destname");
1.225 foxr 2841: if (!rename($transname,$destname)) {
2842: &logthis("Unable to move $transname to $destname");
2843: unlink($transname);
2844: &Failure($client, "failed\n", $userinput);
2845: } else {
1.495 raeburn 2846: if ($fname =~ /^default.+\.(page|sequence)$/) {
2847: my ($major,$minor) = split(/\./,$clientversion);
2848: if (($major < 2) || ($major == 2 && $minor < 11)) {
2849: my $now = time;
2850: &Apache::lonnet::do_cache_new('crschange',$udom.'_'.$uname,$now,600);
2851: my $key = &escape('internal.contentchange');
2852: my $what = "$key=$now";
2853: my $hashref = &tie_user_hash($udom,$uname,'environment',
2854: &GDBM_WRCREAT(),"P",$what);
2855: if ($hashref) {
2856: $hashref->{$key}=$now;
2857: if (!&untie_user_hash($hashref)) {
2858: &logthis("error: ".($!+0)." untie (GDBM) failed ".
2859: "when updating internal.contentchange");
2860: }
2861: }
2862: }
2863: }
1.225 foxr 2864: &Reply($client, "ok\n", $userinput);
2865: }
2866: }
2867: } else {
2868: &Failure($client, "not_home\n", $userinput);
2869: }
2870: return 1;
2871: }
2872: ®ister_handler("fetchuserfile", \&fetch_user_file_handler, 0, 1, 0);
2873:
1.226 foxr 2874: #
2875: # Remove a file from a user's home directory userfiles subdirectory.
2876: # Parameters:
2877: # cmd - the Lond request keyword that got us here.
2878: # tail - the part of the command past the keyword.
2879: # client- File descriptor connected with the client.
2880: #
2881: # Returns:
2882: # 1 - Continue processing.
2883: sub remove_user_file_handler {
2884: my ($cmd, $tail, $client) = @_;
2885:
2886: my ($fname) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2887:
2888: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
2889: if ($ufile =~m|/\.\./|) {
2890: # any files paths with /../ in them refuse
2891: # to deal with
2892: &Failure($client, "refused\n", "$cmd:$tail");
2893: } else {
2894: my $udir = &propath($udom,$uname);
2895: if (-e $udir) {
2896: my $file=$udir.'/userfiles/'.$ufile;
2897: if (-e $file) {
1.253 foxr 2898: #
2899: # If the file is a regular file unlink is fine...
1.520 raeburn 2900: # However it's possible the client wants a dir
2901: # removed, in which case rmdir is more appropriate.
2902: # Note: rmdir will only remove an empty directory.
1.253 foxr 2903: #
1.240 banghart 2904: if (-f $file){
1.241 albertel 2905: unlink($file);
1.520 raeburn 2906: # for html files remove the associated .bak file
2907: # which may have been created by the editor.
2908: if ($ufile =~ m{^((docs|supplemental)/(?:\d+|default)/\d+(?:|/.+)/)[^/]+\.x?html?$}i) {
2909: my $path = $1;
2910: if (-e $file.'.bak') {
2911: unlink($file.'.bak');
2912: }
2913: }
1.241 albertel 2914: } elsif(-d $file) {
2915: rmdir($file);
1.240 banghart 2916: }
1.226 foxr 2917: if (-e $file) {
1.253 foxr 2918: # File is still there after we deleted it ?!?
2919:
1.226 foxr 2920: &Failure($client, "failed\n", "$cmd:$tail");
2921: } else {
2922: &Reply($client, "ok\n", "$cmd:$tail");
2923: }
2924: } else {
2925: &Failure($client, "not_found\n", "$cmd:$tail");
2926: }
2927: } else {
2928: &Failure($client, "not_home\n", "$cmd:$tail");
2929: }
2930: }
2931: return 1;
2932: }
2933: ®ister_handler("removeuserfile", \&remove_user_file_handler, 0,1,0);
2934:
1.236 albertel 2935: #
2936: # make a directory in a user's home directory userfiles subdirectory.
2937: # Parameters:
2938: # cmd - the Lond request keyword that got us here.
2939: # tail - the part of the command past the keyword.
2940: # client- File descriptor connected with the client.
2941: #
2942: # Returns:
2943: # 1 - Continue processing.
2944: sub mkdir_user_file_handler {
2945: my ($cmd, $tail, $client) = @_;
2946:
2947: my ($dir) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2948: $dir=&unescape($dir);
2949: my ($udom,$uname,$ufile) = ($dir =~ m|^([^/]+)/([^/]+)/(.+)$|);
2950: if ($ufile =~m|/\.\./|) {
2951: # any files paths with /../ in them refuse
2952: # to deal with
2953: &Failure($client, "refused\n", "$cmd:$tail");
2954: } else {
2955: my $udir = &propath($udom,$uname);
2956: if (-e $udir) {
1.264 albertel 2957: my $newdir=$udir.'/userfiles/'.$ufile.'/';
2958: if (!&mkpath($newdir)) {
2959: &Failure($client, "failed\n", "$cmd:$tail");
1.236 albertel 2960: }
1.264 albertel 2961: &Reply($client, "ok\n", "$cmd:$tail");
1.236 albertel 2962: } else {
2963: &Failure($client, "not_home\n", "$cmd:$tail");
2964: }
2965: }
2966: return 1;
2967: }
2968: ®ister_handler("mkdiruserfile", \&mkdir_user_file_handler, 0,1,0);
2969:
1.237 albertel 2970: #
2971: # rename a file in a user's home directory userfiles subdirectory.
2972: # Parameters:
2973: # cmd - the Lond request keyword that got us here.
2974: # tail - the part of the command past the keyword.
2975: # client- File descriptor connected with the client.
2976: #
2977: # Returns:
2978: # 1 - Continue processing.
2979: sub rename_user_file_handler {
2980: my ($cmd, $tail, $client) = @_;
2981:
2982: my ($udom,$uname,$old,$new) = split(/:/, $tail);
2983: $old=&unescape($old);
2984: $new=&unescape($new);
2985: if ($new =~m|/\.\./| || $old =~m|/\.\./|) {
2986: # any files paths with /../ in them refuse to deal with
2987: &Failure($client, "refused\n", "$cmd:$tail");
2988: } else {
2989: my $udir = &propath($udom,$uname);
2990: if (-e $udir) {
2991: my $oldfile=$udir.'/userfiles/'.$old;
2992: my $newfile=$udir.'/userfiles/'.$new;
2993: if (-e $newfile) {
2994: &Failure($client, "exists\n", "$cmd:$tail");
2995: } elsif (! -e $oldfile) {
2996: &Failure($client, "not_found\n", "$cmd:$tail");
2997: } else {
2998: if (!rename($oldfile,$newfile)) {
2999: &Failure($client, "failed\n", "$cmd:$tail");
3000: } else {
3001: &Reply($client, "ok\n", "$cmd:$tail");
3002: }
3003: }
3004: } else {
3005: &Failure($client, "not_home\n", "$cmd:$tail");
3006: }
3007: }
3008: return 1;
3009: }
3010: ®ister_handler("renameuserfile", \&rename_user_file_handler, 0,1,0);
3011:
1.227 foxr 3012: #
1.382 albertel 3013: # Checks if the specified user has an active session on the server
3014: # return ok if so, not_found if not
3015: #
3016: # Parameters:
3017: # cmd - The request keyword that dispatched to tus.
3018: # tail - The tail of the request (colon separated parameters).
3019: # client - Filehandle open on the client.
3020: # Return:
3021: # 1.
3022: sub user_has_session_handler {
3023: my ($cmd, $tail, $client) = @_;
3024:
3025: my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail));
3026:
3027: opendir(DIR,$perlvar{'lonIDsDir'});
3028: my $filename;
3029: while ($filename=readdir(DIR)) {
3030: last if ($filename=~/^\Q$uname\E_\d+_\Q$udom\E_/);
3031: }
3032: if ($filename) {
3033: &Reply($client, "ok\n", "$cmd:$tail");
3034: } else {
3035: &Failure($client, "not_found\n", "$cmd:$tail");
3036: }
3037: return 1;
3038:
3039: }
3040: ®ister_handler("userhassession", \&user_has_session_handler, 0,1,0);
3041:
1.560 raeburn 3042: sub del_usersession_handler {
3043: my ($cmd, $tail, $client) = @_;
3044:
3045: my $result;
3046: my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail));
3047: if (($udom =~ /^$LONCAPA::match_domain$/) && ($uname =~ /^$LONCAPA::match_username$/)) {
3048: my $lonidsdir = $perlvar{'lonIDsDir'};
3049: if (-d $lonidsdir) {
3050: if (opendir(DIR,$lonidsdir)) {
3051: my $filename;
3052: while ($filename=readdir(DIR)) {
3053: if ($filename=~/^\Q$uname\E_\d+_\Q$udom\E_/) {
3054: if (tie(my %oldenv,'GDBM_File',"$lonidsdir/$filename",
3055: &GDBM_READER(),0640)) {
3056: my $linkedfile;
3057: if (exists($oldenv{'user.linkedenv'})) {
3058: $linkedfile = $oldenv{'user.linkedenv'};
3059: }
3060: untie(%oldenv);
3061: $result = unlink("$lonidsdir/$filename");
3062: if ($result) {
3063: if ($linkedfile =~ /^[a-f0-9]+_linked$/) {
3064: if (-l "$lonidsdir/$linkedfile.id") {
3065: unlink("$lonidsdir/$linkedfile.id");
3066: }
3067: }
3068: }
3069: } else {
3070: $result = unlink("$lonidsdir/$filename");
3071: }
3072: last;
3073: }
3074: }
3075: }
3076: }
3077: if ($result == 1) {
3078: &Reply($client, "$result\n", "$cmd:$tail");
3079: } else {
3080: &Reply($client, "not_found\n", "$cmd:$tail");
3081: }
3082: } else {
3083: &Failure($client, "invalid_user\n", "$cmd:$tail");
3084: }
3085: return 1;
3086: }
3087:
3088: ®ister_handler("delusersession", \&del_usersession_handler, 0,1,0);
3089:
1.382 albertel 3090: #
1.263 albertel 3091: # Authenticate access to a user file by checking that the token the user's
3092: # passed also exists in their session file
1.227 foxr 3093: #
3094: # Parameters:
3095: # cmd - The request keyword that dispatched to tus.
3096: # tail - The tail of the request (colon separated parameters).
3097: # client - Filehandle open on the client.
3098: # Return:
3099: # 1.
3100: sub token_auth_user_file_handler {
3101: my ($cmd, $tail, $client) = @_;
3102:
3103: my ($fname, $session) = split(/:/, $tail);
3104:
3105: chomp($session);
1.393 raeburn 3106: my $reply="non_auth";
1.343 albertel 3107: my $file = $perlvar{'lonIDsDir'}.'/'.$session.'.id';
3108: if (open(ENVIN,"$file")) {
1.332 albertel 3109: flock(ENVIN,LOCK_SH);
1.343 albertel 3110: tie(my %disk_env,'GDBM_File',"$file",&GDBM_READER(),0640);
3111: if (exists($disk_env{"userfile.$fname"})) {
1.393 raeburn 3112: $reply="ok";
1.343 albertel 3113: } else {
3114: foreach my $envname (keys(%disk_env)) {
3115: if ($envname=~ m|^userfile\.\Q$fname\E|) {
1.393 raeburn 3116: $reply="ok";
1.343 albertel 3117: last;
3118: }
3119: }
1.227 foxr 3120: }
1.343 albertel 3121: untie(%disk_env);
1.227 foxr 3122: close(ENVIN);
1.387 albertel 3123: &Reply($client, \$reply, "$cmd:$tail");
1.227 foxr 3124: } else {
3125: &Failure($client, "invalid_token\n", "$cmd:$tail");
3126: }
3127: return 1;
3128:
3129: }
3130: ®ister_handler("tokenauthuserfile", \&token_auth_user_file_handler, 0,1,0);
1.229 foxr 3131:
3132: #
3133: # Unsubscribe from a resource.
3134: #
3135: # Parameters:
3136: # $cmd - The command that got us here.
3137: # $tail - Tail of the command (remaining parameters).
3138: # $client - File descriptor connected to client.
3139: # Returns
3140: # 0 - Requested to exit, caller should shut down.
3141: # 1 - Continue processing.
3142: #
3143: sub unsubscribe_handler {
3144: my ($cmd, $tail, $client) = @_;
3145:
3146: my $userinput= "$cmd:$tail";
3147:
3148: my ($fname) = split(/:/,$tail); # Split in case there's extrs.
3149:
3150: &Debug("Unsubscribing $fname");
3151: if (-e $fname) {
3152: &Debug("Exists");
3153: &Reply($client, &unsub($fname,$clientip), $userinput);
3154: } else {
3155: &Failure($client, "not_found\n", $userinput);
3156: }
3157: return 1;
3158: }
3159: ®ister_handler("unsub", \&unsubscribe_handler, 0, 1, 0);
1.263 albertel 3160:
1.230 foxr 3161: # Subscribe to a resource
3162: #
3163: # Parameters:
3164: # $cmd - The command that got us here.
3165: # $tail - Tail of the command (remaining parameters).
3166: # $client - File descriptor connected to client.
3167: # Returns
3168: # 0 - Requested to exit, caller should shut down.
3169: # 1 - Continue processing.
3170: #
3171: sub subscribe_handler {
3172: my ($cmd, $tail, $client)= @_;
3173:
3174: my $userinput = "$cmd:$tail";
3175:
3176: &Reply( $client, &subscribe($userinput,$clientip), $userinput);
3177:
3178: return 1;
3179: }
3180: ®ister_handler("sub", \&subscribe_handler, 0, 1, 0);
3181:
3182: #
1.379 albertel 3183: # Determine the latest version of a resource (it looks for the highest
3184: # past version and then returns that +1)
1.230 foxr 3185: #
3186: # Parameters:
3187: # $cmd - The command that got us here.
3188: # $tail - Tail of the command (remaining parameters).
1.379 albertel 3189: # (Should consist of an absolute path to a file)
1.230 foxr 3190: # $client - File descriptor connected to client.
3191: # Returns
3192: # 0 - Requested to exit, caller should shut down.
3193: # 1 - Continue processing.
3194: #
3195: sub current_version_handler {
3196: my ($cmd, $tail, $client) = @_;
3197:
3198: my $userinput= "$cmd:$tail";
3199:
3200: my $fname = $tail;
3201: &Reply( $client, ¤tversion($fname)."\n", $userinput);
3202: return 1;
3203:
3204: }
3205: ®ister_handler("currentversion", \¤t_version_handler, 0, 1, 0);
3206:
3207: # Make an entry in a user's activity log.
3208: #
3209: # Parameters:
3210: # $cmd - The command that got us here.
3211: # $tail - Tail of the command (remaining parameters).
3212: # $client - File descriptor connected to client.
3213: # Returns
3214: # 0 - Requested to exit, caller should shut down.
3215: # 1 - Continue processing.
3216: #
3217: sub activity_log_handler {
3218: my ($cmd, $tail, $client) = @_;
3219:
3220:
3221: my $userinput= "$cmd:$tail";
3222:
3223: my ($udom,$uname,$what)=split(/:/,$tail);
3224: chomp($what);
3225: my $proname=&propath($udom,$uname);
3226: my $now=time;
3227: my $hfh;
3228: if ($hfh=IO::File->new(">>$proname/activity.log")) {
3229: print $hfh "$now:$clientname:$what\n";
3230: &Reply( $client, "ok\n", $userinput);
3231: } else {
3232: &Failure($client, "error: ".($!+0)." IO::File->new Failed "
3233: ."while attempting log\n",
3234: $userinput);
3235: }
3236:
3237: return 1;
3238: }
1.263 albertel 3239: ®ister_handler("log", \&activity_log_handler, 0, 1, 0);
1.230 foxr 3240:
3241: #
3242: # Put a namespace entry in a user profile hash.
3243: # My druthers would be for this to be an encrypted interaction too.
3244: # anything that might be an inadvertent covert channel about either
3245: # user authentication or user personal information....
3246: #
3247: # Parameters:
3248: # $cmd - The command that got us here.
3249: # $tail - Tail of the command (remaining parameters).
3250: # $client - File descriptor connected to client.
3251: # Returns
3252: # 0 - Requested to exit, caller should shut down.
3253: # 1 - Continue processing.
3254: #
3255: sub put_user_profile_entry {
3256: my ($cmd, $tail, $client) = @_;
1.229 foxr 3257:
1.230 foxr 3258: my $userinput = "$cmd:$tail";
3259:
1.242 raeburn 3260: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
1.230 foxr 3261: if ($namespace ne 'roles') {
3262: chomp($what);
3263: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3264: &GDBM_WRCREAT(),"P",$what);
3265: if($hashref) {
3266: my @pairs=split(/\&/,$what);
3267: foreach my $pair (@pairs) {
3268: my ($key,$value)=split(/=/,$pair);
3269: $hashref->{$key}=$value;
3270: }
1.311 albertel 3271: if (&untie_user_hash($hashref)) {
1.230 foxr 3272: &Reply( $client, "ok\n", $userinput);
3273: } else {
3274: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
3275: "while attempting put\n",
3276: $userinput);
3277: }
3278: } else {
1.316 albertel 3279: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.230 foxr 3280: "while attempting put\n", $userinput);
3281: }
3282: } else {
3283: &Failure( $client, "refused\n", $userinput);
3284: }
3285:
3286: return 1;
3287: }
3288: ®ister_handler("put", \&put_user_profile_entry, 0, 1, 0);
3289:
1.283 albertel 3290: # Put a piece of new data in hash, returns error if entry already exists
3291: # Parameters:
3292: # $cmd - The command that got us here.
3293: # $tail - Tail of the command (remaining parameters).
3294: # $client - File descriptor connected to client.
3295: # Returns
3296: # 0 - Requested to exit, caller should shut down.
3297: # 1 - Continue processing.
3298: #
3299: sub newput_user_profile_entry {
3300: my ($cmd, $tail, $client) = @_;
3301:
3302: my $userinput = "$cmd:$tail";
3303:
3304: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
3305: if ($namespace eq 'roles') {
3306: &Failure( $client, "refused\n", $userinput);
3307: return 1;
3308: }
3309:
3310: chomp($what);
3311:
3312: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3313: &GDBM_WRCREAT(),"N",$what);
3314: if(!$hashref) {
1.316 albertel 3315: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.283 albertel 3316: "while attempting put\n", $userinput);
3317: return 1;
3318: }
3319:
3320: my @pairs=split(/\&/,$what);
3321: foreach my $pair (@pairs) {
3322: my ($key,$value)=split(/=/,$pair);
3323: if (exists($hashref->{$key})) {
1.513 raeburn 3324: if (!&untie_user_hash($hashref)) {
3325: &logthis("error: ".($!+0)." untie (GDBM) failed ".
3326: "while attempting newput - early out as key exists");
3327: }
3328: &Failure($client, "key_exists: ".$key."\n",$userinput);
3329: return 1;
1.283 albertel 3330: }
3331: }
3332:
3333: foreach my $pair (@pairs) {
3334: my ($key,$value)=split(/=/,$pair);
3335: $hashref->{$key}=$value;
3336: }
3337:
1.311 albertel 3338: if (&untie_user_hash($hashref)) {
1.283 albertel 3339: &Reply( $client, "ok\n", $userinput);
3340: } else {
3341: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
3342: "while attempting put\n",
3343: $userinput);
3344: }
3345: return 1;
3346: }
3347: ®ister_handler("newput", \&newput_user_profile_entry, 0, 1, 0);
3348:
1.230 foxr 3349: #
3350: # Increment a profile entry in the user history file.
3351: # The history contains keyword value pairs. In this case,
3352: # The value itself is a pair of numbers. The first, the current value
3353: # the second an increment that this function applies to the current
3354: # value.
3355: #
3356: # Parameters:
3357: # $cmd - The command that got us here.
3358: # $tail - Tail of the command (remaining parameters).
3359: # $client - File descriptor connected to client.
3360: # Returns
3361: # 0 - Requested to exit, caller should shut down.
3362: # 1 - Continue processing.
3363: #
3364: sub increment_user_value_handler {
3365: my ($cmd, $tail, $client) = @_;
3366:
3367: my $userinput = "$cmd:$tail";
3368:
3369: my ($udom,$uname,$namespace,$what) =split(/:/,$tail);
3370: if ($namespace ne 'roles') {
3371: chomp($what);
3372: my $hashref = &tie_user_hash($udom, $uname,
3373: $namespace, &GDBM_WRCREAT(),
3374: "P",$what);
3375: if ($hashref) {
3376: my @pairs=split(/\&/,$what);
3377: foreach my $pair (@pairs) {
3378: my ($key,$value)=split(/=/,$pair);
1.284 raeburn 3379: $value = &unescape($value);
1.230 foxr 3380: # We could check that we have a number...
3381: if (! defined($value) || $value eq '') {
3382: $value = 1;
3383: }
3384: $hashref->{$key}+=$value;
1.284 raeburn 3385: if ($namespace eq 'nohist_resourcetracker') {
3386: if ($hashref->{$key} < 0) {
3387: $hashref->{$key} = 0;
3388: }
3389: }
1.230 foxr 3390: }
1.311 albertel 3391: if (&untie_user_hash($hashref)) {
1.230 foxr 3392: &Reply( $client, "ok\n", $userinput);
3393: } else {
3394: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
3395: "while attempting inc\n", $userinput);
3396: }
3397: } else {
3398: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3399: "while attempting inc\n", $userinput);
3400: }
3401: } else {
3402: &Failure($client, "refused\n", $userinput);
3403: }
3404:
3405: return 1;
3406: }
3407: ®ister_handler("inc", \&increment_user_value_handler, 0, 1, 0);
3408:
3409: #
3410: # Put a new role for a user. Roles are LonCAPA's packaging of permissions.
3411: # Each 'role' a user has implies a set of permissions. Adding a new role
3412: # for a person grants the permissions packaged with that role
3413: # to that user when the role is selected.
3414: #
3415: # Parameters:
3416: # $cmd - The command string (rolesput).
3417: # $tail - The remainder of the request line. For rolesput this
3418: # consists of a colon separated list that contains:
3419: # The domain and user that is granting the role (logged).
3420: # The domain and user that is getting the role.
3421: # The roles being granted as a set of & separated pairs.
3422: # each pair a key value pair.
3423: # $client - File descriptor connected to the client.
3424: # Returns:
3425: # 0 - If the daemon should exit
3426: # 1 - To continue processing.
3427: #
3428: #
3429: sub roles_put_handler {
3430: my ($cmd, $tail, $client) = @_;
3431:
3432: my $userinput = "$cmd:$tail";
3433:
3434: my ( $exedom, $exeuser, $udom, $uname, $what) = split(/:/,$tail);
3435:
3436:
3437: my $namespace='roles';
3438: chomp($what);
3439: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3440: &GDBM_WRCREAT(), "P",
3441: "$exedom:$exeuser:$what");
3442: #
3443: # Log the attempt to set a role. The {}'s here ensure that the file
3444: # handle is open for the minimal amount of time. Since the flush
3445: # is done on close this improves the chances the log will be an un-
3446: # corrupted ordered thing.
3447: if ($hashref) {
1.261 foxr 3448: my $pass_entry = &get_auth_type($udom, $uname);
3449: my ($auth_type,$pwd) = split(/:/, $pass_entry);
3450: $auth_type = $auth_type.":";
1.230 foxr 3451: my @pairs=split(/\&/,$what);
3452: foreach my $pair (@pairs) {
3453: my ($key,$value)=split(/=/,$pair);
3454: &manage_permissions($key, $udom, $uname,
1.260 foxr 3455: $auth_type);
1.230 foxr 3456: $hashref->{$key}=$value;
3457: }
1.311 albertel 3458: if (&untie_user_hash($hashref)) {
1.230 foxr 3459: &Reply($client, "ok\n", $userinput);
3460: } else {
3461: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3462: "while attempting rolesput\n", $userinput);
3463: }
3464: } else {
3465: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3466: "while attempting rolesput\n", $userinput);
3467: }
3468: return 1;
3469: }
3470: ®ister_handler("rolesput", \&roles_put_handler, 1,1,0); # Encoded client only.
3471:
3472: #
1.231 foxr 3473: # Deletes (removes) a role for a user. This is equivalent to removing
3474: # a permissions package associated with the role from the user's profile.
3475: #
3476: # Parameters:
3477: # $cmd - The command (rolesdel)
3478: # $tail - The remainder of the request line. This consists
3479: # of:
3480: # The domain and user requesting the change (logged)
3481: # The domain and user being changed.
3482: # The roles being revoked. These are shipped to us
3483: # as a bunch of & separated role name keywords.
3484: # $client - The file handle open on the client.
3485: # Returns:
3486: # 1 - Continue processing
3487: # 0 - Exit.
3488: #
3489: sub roles_delete_handler {
3490: my ($cmd, $tail, $client) = @_;
3491:
3492: my $userinput = "$cmd:$tail";
3493:
3494: my ($exedom,$exeuser,$udom,$uname,$what)=split(/:/,$tail);
3495: &Debug("cmd = ".$cmd." exedom= ".$exedom."user = ".$exeuser." udom=".$udom.
3496: "what = ".$what);
3497: my $namespace='roles';
3498: chomp($what);
3499: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3500: &GDBM_WRCREAT(), "D",
3501: "$exedom:$exeuser:$what");
3502:
3503: if ($hashref) {
3504: my @rolekeys=split(/\&/,$what);
3505:
3506: foreach my $key (@rolekeys) {
3507: delete $hashref->{$key};
3508: }
1.315 albertel 3509: if (&untie_user_hash($hashref)) {
1.231 foxr 3510: &Reply($client, "ok\n", $userinput);
3511: } else {
3512: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3513: "while attempting rolesdel\n", $userinput);
3514: }
3515: } else {
3516: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3517: "while attempting rolesdel\n", $userinput);
3518: }
3519:
3520: return 1;
3521: }
3522: ®ister_handler("rolesdel", \&roles_delete_handler, 1,1, 0); # Encoded client only
3523:
3524: # Unencrypted get from a user's profile database. See
3525: # GetProfileEntryEncrypted for a version that does end-to-end encryption.
3526: # This function retrieves a keyed item from a specific named database in the
3527: # user's directory.
3528: #
3529: # Parameters:
3530: # $cmd - Command request keyword (get).
3531: # $tail - Tail of the command. This is a colon separated list
3532: # consisting of the domain and username that uniquely
3533: # identifies the profile,
3534: # The 'namespace' which selects the gdbm file to
3535: # do the lookup in,
3536: # & separated list of keys to lookup. Note that
3537: # the values are returned as an & separated list too.
3538: # $client - File descriptor open on the client.
3539: # Returns:
3540: # 1 - Continue processing.
3541: # 0 - Exit.
3542: #
3543: sub get_profile_entry {
3544: my ($cmd, $tail, $client) = @_;
3545:
3546: my $userinput= "$cmd:$tail";
3547:
3548: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3549: chomp($what);
1.255 foxr 3550:
1.390 raeburn 3551:
1.255 foxr 3552: my $replystring = read_profile($udom, $uname, $namespace, $what);
3553: my ($first) = split(/:/,$replystring);
3554: if($first ne "error") {
1.387 albertel 3555: &Reply($client, \$replystring, $userinput);
1.231 foxr 3556: } else {
1.255 foxr 3557: &Failure($client, $replystring." while attempting get\n", $userinput);
1.231 foxr 3558: }
3559: return 1;
1.255 foxr 3560:
3561:
1.231 foxr 3562: }
3563: ®ister_handler("get", \&get_profile_entry, 0,1,0);
3564:
3565: #
3566: # Process the encrypted get request. Note that the request is sent
3567: # in clear, but the reply is encrypted. This is a small covert channel:
3568: # information about the sensitive keys is given to the snooper. Just not
3569: # information about the values of the sensitive key. Hmm if I wanted to
3570: # know these I'd snoop for the egets. Get the profile item names from them
3571: # and then issue a get for them since there's no enforcement of the
3572: # requirement of an encrypted get for particular profile items. If I
3573: # were re-doing this, I'd force the request to be encrypted as well as the
3574: # reply. I'd also just enforce encrypted transactions for all gets since
3575: # that would prevent any covert channel snooping.
3576: #
3577: # Parameters:
3578: # $cmd - Command keyword of request (eget).
1.536 raeburn 3579: # $tail - Tail of the command. See GetProfileEntry
3580: # for more information about this.
1.231 foxr 3581: # $client - File open on the client.
3582: # Returns:
3583: # 1 - Continue processing
3584: # 0 - server should exit.
3585: sub get_profile_entry_encrypted {
3586: my ($cmd, $tail, $client) = @_;
3587:
3588: my $userinput = "$cmd:$tail";
3589:
1.339 albertel 3590: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
1.231 foxr 3591: chomp($what);
1.255 foxr 3592: my $qresult = read_profile($udom, $uname, $namespace, $what);
3593: my ($first) = split(/:/, $qresult);
3594: if($first ne "error") {
3595:
3596: if ($cipher) {
3597: my $cmdlength=length($qresult);
3598: $qresult.=" ";
3599: my $encqresult='';
3600: for(my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
3601: $encqresult.= unpack("H16",
3602: $cipher->encrypt(substr($qresult,
3603: $encidx,
3604: 8)));
3605: }
3606: &Reply( $client, "enc:$cmdlength:$encqresult\n", $userinput);
3607: } else {
1.231 foxr 3608: &Failure( $client, "error:no_key\n", $userinput);
3609: }
3610: } else {
1.255 foxr 3611: &Failure($client, "$qresult while attempting eget\n", $userinput);
3612:
1.231 foxr 3613: }
3614:
3615: return 1;
3616: }
1.255 foxr 3617: ®ister_handler("eget", \&get_profile_entry_encrypted, 0, 1, 0);
1.263 albertel 3618:
1.231 foxr 3619: #
3620: # Deletes a key in a user profile database.
3621: #
3622: # Parameters:
3623: # $cmd - Command keyword (del).
3624: # $tail - Command tail. IN this case a colon
3625: # separated list containing:
3626: # The domain and user that identifies uniquely
3627: # the identity of the user.
3628: # The profile namespace (name of the profile
3629: # database file).
3630: # & separated list of keywords to delete.
3631: # $client - File open on client socket.
3632: # Returns:
3633: # 1 - Continue processing
3634: # 0 - Exit server.
3635: #
3636: #
3637: sub delete_profile_entry {
3638: my ($cmd, $tail, $client) = @_;
3639:
3640: my $userinput = "cmd:$tail";
3641:
3642: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3643: chomp($what);
3644: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3645: &GDBM_WRCREAT(),
3646: "D",$what);
3647: if ($hashref) {
3648: my @keys=split(/\&/,$what);
3649: foreach my $key (@keys) {
3650: delete($hashref->{$key});
3651: }
1.315 albertel 3652: if (&untie_user_hash($hashref)) {
1.231 foxr 3653: &Reply($client, "ok\n", $userinput);
3654: } else {
3655: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3656: "while attempting del\n", $userinput);
3657: }
3658: } else {
3659: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3660: "while attempting del\n", $userinput);
3661: }
3662: return 1;
3663: }
3664: ®ister_handler("del", \&delete_profile_entry, 0, 1, 0);
1.263 albertel 3665:
1.231 foxr 3666: #
3667: # List the set of keys that are defined in a profile database file.
3668: # A successful reply from this will contain an & separated list of
3669: # the keys.
3670: # Parameters:
3671: # $cmd - Command request (keys).
3672: # $tail - Remainder of the request, a colon separated
3673: # list containing domain/user that identifies the
3674: # user being queried, and the database namespace
3675: # (database filename essentially).
3676: # $client - File open on the client.
3677: # Returns:
3678: # 1 - Continue processing.
3679: # 0 - Exit the server.
3680: #
3681: sub get_profile_keys {
3682: my ($cmd, $tail, $client) = @_;
3683:
3684: my $userinput = "$cmd:$tail";
3685:
3686: my ($udom,$uname,$namespace)=split(/:/,$tail);
3687: my $qresult='';
3688: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3689: &GDBM_READER());
3690: if ($hashref) {
3691: foreach my $key (keys %$hashref) {
3692: $qresult.="$key&";
3693: }
1.315 albertel 3694: if (&untie_user_hash($hashref)) {
1.231 foxr 3695: $qresult=~s/\&$//;
1.387 albertel 3696: &Reply($client, \$qresult, $userinput);
1.231 foxr 3697: } else {
3698: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3699: "while attempting keys\n", $userinput);
3700: }
3701: } else {
3702: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3703: "while attempting keys\n", $userinput);
3704: }
3705:
3706: return 1;
3707: }
3708: ®ister_handler("keys", \&get_profile_keys, 0, 1, 0);
3709:
3710: #
3711: # Dump the contents of a user profile database.
3712: # Note that this constitutes a very large covert channel too since
3713: # the dump will return sensitive information that is not encrypted.
3714: # The naive security assumption is that the session negotiation ensures
3715: # our client is trusted and I don't believe that's assured at present.
3716: # Sure want badly to go to ssl or tls. Of course if my peer isn't really
3717: # a LonCAPA node they could have negotiated an encryption key too so >sigh<.
3718: #
3719: # Parameters:
3720: # $cmd - The command request keyword (currentdump).
3721: # $tail - Remainder of the request, consisting of a colon
3722: # separated list that has the domain/username and
3723: # the namespace to dump (database file).
3724: # $client - file open on the remote client.
3725: # Returns:
3726: # 1 - Continue processing.
3727: # 0 - Exit the server.
3728: #
3729: sub dump_profile_database {
3730: my ($cmd, $tail, $client) = @_;
3731:
1.494 droeschl 3732: my $res = LONCAPA::Lond::dump_profile_database($tail);
3733:
3734: if ($res =~ /^error:/) {
3735: Failure($client, \$res, "$cmd:$tail");
3736: } else {
3737: Reply($client, \$res, "$cmd:$tail");
3738: }
3739:
3740: return 1;
3741:
3742: #TODO remove
1.231 foxr 3743: my $userinput = "$cmd:$tail";
3744:
3745: my ($udom,$uname,$namespace) = split(/:/,$tail);
3746: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3747: &GDBM_READER());
3748: if ($hashref) {
3749: # Structure of %data:
3750: # $data{$symb}->{$parameter}=$value;
3751: # $data{$symb}->{'v.'.$parameter}=$version;
3752: # since $parameter will be unescaped, we do not
3753: # have to worry about silly parameter names...
3754:
3755: my $qresult='';
3756: my %data = (); # A hash of anonymous hashes..
3757: while (my ($key,$value) = each(%$hashref)) {
3758: my ($v,$symb,$param) = split(/:/,$key);
3759: next if ($v eq 'version' || $symb eq 'keys');
3760: next if (exists($data{$symb}) &&
3761: exists($data{$symb}->{$param}) &&
3762: $data{$symb}->{'v.'.$param} > $v);
3763: $data{$symb}->{$param}=$value;
3764: $data{$symb}->{'v.'.$param}=$v;
3765: }
1.311 albertel 3766: if (&untie_user_hash($hashref)) {
1.231 foxr 3767: while (my ($symb,$param_hash) = each(%data)) {
3768: while(my ($param,$value) = each (%$param_hash)){
3769: next if ($param =~ /^v\./); # Ignore versions...
3770: #
3771: # Just dump the symb=value pairs separated by &
3772: #
3773: $qresult.=$symb.':'.$param.'='.$value.'&';
3774: }
3775: }
3776: chop($qresult);
1.387 albertel 3777: &Reply($client , \$qresult, $userinput);
1.231 foxr 3778: } else {
3779: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3780: "while attempting currentdump\n", $userinput);
3781: }
3782: } else {
3783: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3784: "while attempting currentdump\n", $userinput);
3785: }
3786:
3787: return 1;
3788: }
3789: ®ister_handler("currentdump", \&dump_profile_database, 0, 1, 0);
3790:
3791: #
3792: # Dump a profile database with an optional regular expression
3793: # to match against the keys. In this dump, no effort is made
3794: # to separate symb from version information. Presumably the
3795: # databases that are dumped by this command are of a different
3796: # structure. Need to look at this and improve the documentation of
3797: # both this and the currentdump handler.
3798: # Parameters:
3799: # $cmd - The command keyword.
3800: # $tail - All of the characters after the $cmd:
3801: # These are expected to be a colon
3802: # separated list containing:
3803: # domain/user - identifying the user.
3804: # namespace - identifying the database.
3805: # regexp - optional regular expression
3806: # that is matched against
3807: # database keywords to do
3808: # selective dumps.
1.488 raeburn 3809: # range - optional range of entries
3810: # e.g., 10-20 would return the
3811: # 10th to 19th items, etc.
1.231 foxr 3812: # $client - Channel open on the client.
3813: # Returns:
3814: # 1 - Continue processing.
3815: # Side effects:
3816: # response is written to $client.
3817: #
3818: sub dump_with_regexp {
3819: my ($cmd, $tail, $client) = @_;
3820:
1.494 droeschl 3821: my $res = LONCAPA::Lond::dump_with_regexp($tail, $clientversion);
1.490 droeschl 3822:
3823: if ($res =~ /^error:/) {
3824: Failure($client, \$res, "$cmd:$tail");
3825: } else {
3826: Reply($client, \$res, "$cmd:$tail");
3827: }
1.231 foxr 3828:
3829: return 1;
3830: }
3831: ®ister_handler("dump", \&dump_with_regexp, 0, 1, 0);
3832:
1.568 ! raeburn 3833: #
! 3834: # Process the encrypted dump request. Original call should
! 3835: # be from lonnet::dump() with seventh arg ($encrypt) set to
! 3836: # 1, to ensure that both request and response are encrypted.
! 3837: #
! 3838: # Parameters:
! 3839: # $cmd - Command keyword of request (edump).
! 3840: # $tail - Tail of the command.
! 3841: # See &dump_with_regexp for more
! 3842: # information about this.
! 3843: # $client - File open on the client.
! 3844: # Returns:
! 3845: # 1 - Continue processing
! 3846: # 0 - server should exit.
! 3847: #
! 3848:
! 3849: sub encrypted_dump_with_regexp {
! 3850: my ($cmd, $tail, $client) = @_;
! 3851: my $res = LONCAPA::Lond::dump_with_regexp($tail, $clientversion);
! 3852:
! 3853: if ($res =~ /^error:/) {
! 3854: Failure($client, \$res, "$cmd:$tail");
! 3855: } else {
! 3856: if ($cipher) {
! 3857: my $cmdlength=length($res);
! 3858: $res.=" ";
! 3859: my $encres='';
! 3860: for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
! 3861: $encres.= unpack("H16",
! 3862: $cipher->encrypt(substr($res,
! 3863: $encidx,
! 3864: 8)));
! 3865: }
! 3866: &Reply( $client,"enc:$cmdlength:$encres\n","$cmd:$tail");
! 3867: } else {
! 3868: &Failure( $client, "error:no_key\n","$cmd:$tail");
! 3869: }
! 3870: }
! 3871: }
! 3872: ®ister_handler("edump", \&encrypted_dump_with_regexp, 0, 1, 0);
! 3873:
1.231 foxr 3874: # Store a set of key=value pairs associated with a versioned name.
3875: #
3876: # Parameters:
3877: # $cmd - Request command keyword.
3878: # $tail - Tail of the request. This is a colon
3879: # separated list containing:
3880: # domain/user - User and authentication domain.
3881: # namespace - Name of the database being modified
3882: # rid - Resource keyword to modify.
3883: # what - new value associated with rid.
1.512 raeburn 3884: # laststore - (optional) version=timestamp
3885: # for most recent transaction for rid
3886: # in namespace, when cstore was called
1.231 foxr 3887: #
3888: # $client - Socket open on the client.
3889: #
3890: #
3891: # Returns:
3892: # 1 (keep on processing).
3893: # Side-Effects:
3894: # Writes to the client
1.512 raeburn 3895: # Successful storage will cause either 'ok', or, if $laststore was included
3896: # in the tail of the request, and the version number for the last transaction
3897: # is larger than the version in $laststore, delay:$numtrans , where $numtrans
3898: # is the number of store evevnts recorded for rid in namespace since
3899: # lonnet::store() was called by the client.
3900: #
1.231 foxr 3901: sub store_handler {
3902: my ($cmd, $tail, $client) = @_;
3903:
3904: my $userinput = "$cmd:$tail";
1.512 raeburn 3905: chomp($tail);
3906: my ($udom,$uname,$namespace,$rid,$what,$laststore) =split(/:/,$tail);
1.231 foxr 3907: if ($namespace ne 'roles') {
3908:
3909: my @pairs=split(/\&/,$what);
3910: my $hashref = &tie_user_hash($udom, $uname, $namespace,
1.268 albertel 3911: &GDBM_WRCREAT(), "S",
1.231 foxr 3912: "$rid:$what");
3913: if ($hashref) {
3914: my $now = time;
1.512 raeburn 3915: my $numtrans;
3916: if ($laststore) {
3917: my ($previousversion,$previoustime) = split(/\=/,$laststore);
3918: my ($lastversion,$lasttime) = (0,0);
3919: $lastversion = $hashref->{"version:$rid"};
3920: if ($lastversion) {
3921: $lasttime = $hashref->{"$lastversion:$rid:timestamp"};
3922: }
3923: if (($previousversion) && ($previousversion !~ /\D/)) {
3924: if (($lastversion > $previousversion) && ($lasttime >= $previoustime)) {
3925: $numtrans = $lastversion - $previousversion;
3926: }
3927: } elsif ($lastversion) {
3928: $numtrans = $lastversion;
3929: }
3930: if ($numtrans) {
3931: $numtrans =~ s/D//g;
3932: }
3933: }
1.231 foxr 3934: $hashref->{"version:$rid"}++;
3935: my $version=$hashref->{"version:$rid"};
3936: my $allkeys='';
3937: foreach my $pair (@pairs) {
3938: my ($key,$value)=split(/=/,$pair);
3939: $allkeys.=$key.':';
3940: $hashref->{"$version:$rid:$key"}=$value;
3941: }
3942: $hashref->{"$version:$rid:timestamp"}=$now;
3943: $allkeys.='timestamp';
3944: $hashref->{"$version:keys:$rid"}=$allkeys;
1.311 albertel 3945: if (&untie_user_hash($hashref)) {
1.512 raeburn 3946: my $msg = 'ok';
3947: if ($numtrans) {
3948: $msg = 'delay:'.$numtrans;
3949: }
3950: &Reply($client, "$msg\n", $userinput);
1.231 foxr 3951: } else {
3952: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3953: "while attempting store\n", $userinput);
3954: }
3955: } else {
3956: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3957: "while attempting store\n", $userinput);
3958: }
3959: } else {
3960: &Failure($client, "refused\n", $userinput);
3961: }
3962:
3963: return 1;
3964: }
3965: ®ister_handler("store", \&store_handler, 0, 1, 0);
1.263 albertel 3966:
1.323 albertel 3967: # Modify a set of key=value pairs associated with a versioned name.
3968: #
3969: # Parameters:
3970: # $cmd - Request command keyword.
3971: # $tail - Tail of the request. This is a colon
3972: # separated list containing:
3973: # domain/user - User and authentication domain.
3974: # namespace - Name of the database being modified
3975: # rid - Resource keyword to modify.
3976: # v - Version item to modify
3977: # what - new value associated with rid.
3978: #
3979: # $client - Socket open on the client.
3980: #
3981: #
3982: # Returns:
3983: # 1 (keep on processing).
3984: # Side-Effects:
3985: # Writes to the client
3986: sub putstore_handler {
3987: my ($cmd, $tail, $client) = @_;
3988:
3989: my $userinput = "$cmd:$tail";
3990:
3991: my ($udom,$uname,$namespace,$rid,$v,$what) =split(/:/,$tail);
3992: if ($namespace ne 'roles') {
3993:
3994: chomp($what);
3995: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3996: &GDBM_WRCREAT(), "M",
3997: "$rid:$v:$what");
3998: if ($hashref) {
3999: my $now = time;
4000: my %data = &hash_extract($what);
4001: my @allkeys;
4002: while (my($key,$value) = each(%data)) {
4003: push(@allkeys,$key);
4004: $hashref->{"$v:$rid:$key"} = $value;
4005: }
4006: my $allkeys = join(':',@allkeys);
4007: $hashref->{"$v:keys:$rid"}=$allkeys;
4008:
4009: if (&untie_user_hash($hashref)) {
4010: &Reply($client, "ok\n", $userinput);
4011: } else {
4012: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4013: "while attempting store\n", $userinput);
4014: }
4015: } else {
4016: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4017: "while attempting store\n", $userinput);
4018: }
4019: } else {
4020: &Failure($client, "refused\n", $userinput);
4021: }
4022:
4023: return 1;
4024: }
4025: ®ister_handler("putstore", \&putstore_handler, 0, 1, 0);
4026:
4027: sub hash_extract {
4028: my ($str)=@_;
4029: my %hash;
4030: foreach my $pair (split(/\&/,$str)) {
4031: my ($key,$value)=split(/=/,$pair);
4032: $hash{$key}=$value;
4033: }
4034: return (%hash);
4035: }
4036: sub hash_to_str {
4037: my ($hash_ref)=@_;
4038: my $str;
4039: foreach my $key (keys(%$hash_ref)) {
4040: $str.=$key.'='.$hash_ref->{$key}.'&';
4041: }
4042: $str=~s/\&$//;
4043: return $str;
4044: }
4045:
1.231 foxr 4046: #
4047: # Dump out all versions of a resource that has key=value pairs associated
4048: # with it for each version. These resources are built up via the store
4049: # command.
4050: #
4051: # Parameters:
4052: # $cmd - Command keyword.
4053: # $tail - Remainder of the request which consists of:
4054: # domain/user - User and auth. domain.
4055: # namespace - name of resource database.
4056: # rid - Resource id.
4057: # $client - socket open on the client.
4058: #
4059: # Returns:
4060: # 1 indicating the caller should not yet exit.
4061: # Side-effects:
4062: # Writes a reply to the client.
4063: # The reply is a string of the following shape:
4064: # version=current&version:keys=k1:k2...&1:k1=v1&1:k2=v2...
4065: # Where the 1 above represents version 1.
4066: # this continues for all pairs of keys in all versions.
4067: #
4068: #
4069: #
4070: #
4071: sub restore_handler {
4072: my ($cmd, $tail, $client) = @_;
4073:
4074: my $userinput = "$cmd:$tail"; # Only used for logging purposes.
1.351 banghart 4075: my ($udom,$uname,$namespace,$rid) = split(/:/,$tail);
1.352 albertel 4076: $namespace=~s/\//\_/g;
1.350 albertel 4077: $namespace = &LONCAPA::clean_username($namespace);
1.349 albertel 4078:
1.231 foxr 4079: chomp($rid);
4080: my $qresult='';
1.309 albertel 4081: my $hashref = &tie_user_hash($udom, $uname, $namespace, &GDBM_READER());
4082: if ($hashref) {
4083: my $version=$hashref->{"version:$rid"};
1.231 foxr 4084: $qresult.="version=$version&";
4085: my $scope;
4086: for ($scope=1;$scope<=$version;$scope++) {
1.309 albertel 4087: my $vkeys=$hashref->{"$scope:keys:$rid"};
1.231 foxr 4088: my @keys=split(/:/,$vkeys);
4089: my $key;
4090: $qresult.="$scope:keys=$vkeys&";
4091: foreach $key (@keys) {
1.309 albertel 4092: $qresult.="$scope:$key=".$hashref->{"$scope:$rid:$key"}."&";
1.231 foxr 4093: }
4094: }
1.311 albertel 4095: if (&untie_user_hash($hashref)) {
1.231 foxr 4096: $qresult=~s/\&$//;
1.387 albertel 4097: &Reply( $client, \$qresult, $userinput);
1.231 foxr 4098: } else {
4099: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4100: "while attempting restore\n", $userinput);
4101: }
4102: } else {
4103: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4104: "while attempting restore\n", $userinput);
4105: }
4106:
4107: return 1;
4108:
4109:
4110: }
4111: ®ister_handler("restore", \&restore_handler, 0,1,0);
1.234 foxr 4112:
4113: #
1.324 raeburn 4114: # Add a chat message to a synchronous discussion board.
1.234 foxr 4115: #
4116: # Parameters:
4117: # $cmd - Request keyword.
4118: # $tail - Tail of the command. A colon separated list
4119: # containing:
4120: # cdom - Domain on which the chat board lives
1.324 raeburn 4121: # cnum - Course containing the chat board.
4122: # newpost - Body of the posting.
4123: # group - Optional group, if chat board is only
4124: # accessible in a group within the course
1.234 foxr 4125: # $client - Socket open on the client.
4126: # Returns:
4127: # 1 - Indicating caller should keep on processing.
4128: #
4129: # Side-effects:
4130: # writes a reply to the client.
4131: #
4132: #
4133: sub send_chat_handler {
4134: my ($cmd, $tail, $client) = @_;
4135:
4136:
4137: my $userinput = "$cmd:$tail";
4138:
1.324 raeburn 4139: my ($cdom,$cnum,$newpost,$group)=split(/\:/,$tail);
4140: &chat_add($cdom,$cnum,$newpost,$group);
1.234 foxr 4141: &Reply($client, "ok\n", $userinput);
4142:
4143: return 1;
4144: }
4145: ®ister_handler("chatsend", \&send_chat_handler, 0, 1, 0);
1.263 albertel 4146:
1.234 foxr 4147: #
1.324 raeburn 4148: # Retrieve the set of chat messages from a discussion board.
1.234 foxr 4149: #
4150: # Parameters:
4151: # $cmd - Command keyword that initiated the request.
4152: # $tail - Remainder of the request after the command
4153: # keyword. In this case a colon separated list of
4154: # chat domain - Which discussion board.
4155: # chat id - Discussion thread(?)
4156: # domain/user - Authentication domain and username
4157: # of the requesting person.
1.324 raeburn 4158: # group - Optional course group containing
4159: # the board.
1.234 foxr 4160: # $client - Socket open on the client program.
4161: # Returns:
4162: # 1 - continue processing
4163: # Side effects:
4164: # Response is written to the client.
4165: #
4166: sub retrieve_chat_handler {
4167: my ($cmd, $tail, $client) = @_;
4168:
4169:
4170: my $userinput = "$cmd:$tail";
4171:
1.324 raeburn 4172: my ($cdom,$cnum,$udom,$uname,$group)=split(/\:/,$tail);
1.234 foxr 4173: my $reply='';
1.324 raeburn 4174: foreach (&get_chat($cdom,$cnum,$udom,$uname,$group)) {
1.234 foxr 4175: $reply.=&escape($_).':';
4176: }
4177: $reply=~s/\:$//;
1.387 albertel 4178: &Reply($client, \$reply, $userinput);
1.234 foxr 4179:
4180:
4181: return 1;
4182: }
4183: ®ister_handler("chatretr", \&retrieve_chat_handler, 0, 1, 0);
4184:
4185: #
4186: # Initiate a query of an sql database. SQL query repsonses get put in
4187: # a file for later retrieval. This prevents sql query results from
4188: # bottlenecking the system. Note that with loncnew, perhaps this is
4189: # less of an issue since multiple outstanding requests can be concurrently
4190: # serviced.
4191: #
4192: # Parameters:
1.535 raeburn 4193: # $cmd - Command keyword that initiated the request.
1.234 foxr 4194: # $tail - Remainder of the command after the keyword.
4195: # For this function, this consists of a query and
4196: # 3 arguments that are self-documentingly labelled
4197: # in the original arg1, arg2, arg3.
4198: # $client - Socket open on the client.
4199: # Return:
4200: # 1 - Indicating processing should continue.
4201: # Side-effects:
4202: # a reply is written to $client.
4203: #
4204: sub send_query_handler {
4205: my ($cmd, $tail, $client) = @_;
4206:
4207: my $userinput = "$cmd:$tail";
4208:
4209: my ($query,$arg1,$arg2,$arg3)=split(/\:/,$tail);
4210: $query=~s/\n*$//g;
1.534 raeburn 4211: if (($query eq 'usersearch') || ($query eq 'instdirsearch')) {
4212: my $usersearchconf = &get_usersearch_config($currentdomainid,'directorysrch');
4213: my $earlyout;
4214: if (ref($usersearchconf) eq 'HASH') {
4215: if ($currentdomainid eq $clienthomedom) {
4216: if ($query eq 'usersearch') {
4217: if ($usersearchconf->{'lcavailable'} eq '0') {
4218: $earlyout = 1;
4219: }
4220: } else {
4221: if ($usersearchconf->{'available'} eq '0') {
4222: $earlyout = 1;
4223: }
4224: }
4225: } else {
4226: if ($query eq 'usersearch') {
4227: if ($usersearchconf->{'lclocalonly'}) {
4228: $earlyout = 1;
4229: }
4230: } else {
4231: if ($usersearchconf->{'localonly'}) {
4232: $earlyout = 1;
4233: }
4234: }
4235: }
4236: }
4237: if ($earlyout) {
4238: &Reply($client, "query_not_authorized\n");
4239: return 1;
4240: }
4241: }
1.234 foxr 4242: &Reply($client, "". &sql_reply("$clientname\&$query".
4243: "\&$arg1"."\&$arg2"."\&$arg3")."\n",
4244: $userinput);
4245:
4246: return 1;
4247: }
4248: ®ister_handler("querysend", \&send_query_handler, 0, 1, 0);
4249:
4250: #
4251: # Add a reply to an sql query. SQL queries are done asyncrhonously.
4252: # The query is submitted via a "querysend" transaction.
4253: # There it is passed on to the lonsql daemon, queued and issued to
4254: # mysql.
4255: # This transaction is invoked when the sql transaction is complete
4256: # it stores the query results in flie and indicates query completion.
4257: # presumably local software then fetches this response... I'm guessing
4258: # the sequence is: lonc does a querysend, we ask lonsql to do it.
4259: # lonsql on completion of the query interacts with the lond of our
4260: # client to do a query reply storing two files:
4261: # - id - The results of the query.
4262: # - id.end - Indicating the transaction completed.
4263: # NOTE: id is a unique id assigned to the query and querysend time.
4264: # Parameters:
4265: # $cmd - Command keyword that initiated this request.
4266: # $tail - Remainder of the tail. In this case that's a colon
4267: # separated list containing the query Id and the
4268: # results of the query.
4269: # $client - Socket open on the client.
4270: # Return:
4271: # 1 - Indicating that we should continue processing.
4272: # Side effects:
4273: # ok written to the client.
4274: #
4275: sub reply_query_handler {
4276: my ($cmd, $tail, $client) = @_;
4277:
4278:
4279: my $userinput = "$cmd:$tail";
4280:
1.339 albertel 4281: my ($id,$reply)=split(/:/,$tail);
1.234 foxr 4282: my $store;
4283: my $execdir=$perlvar{'lonDaemons'};
4284: if ($store=IO::File->new(">$execdir/tmp/$id")) {
4285: $reply=~s/\&/\n/g;
4286: print $store $reply;
4287: close $store;
4288: my $store2=IO::File->new(">$execdir/tmp/$id.end");
4289: print $store2 "done\n";
4290: close $store2;
4291: &Reply($client, "ok\n", $userinput);
4292: } else {
4293: &Failure($client, "error: ".($!+0)
4294: ." IO::File->new Failed ".
4295: "while attempting queryreply\n", $userinput);
4296: }
4297:
4298:
4299: return 1;
4300: }
4301: ®ister_handler("queryreply", \&reply_query_handler, 0, 1, 0);
4302:
4303: #
4304: # Process the courseidput request. Not quite sure what this means
4305: # at the system level sense. It appears a gdbm file in the
4306: # /home/httpd/lonUsers/$domain/nohist_courseids is tied and
4307: # a set of entries made in that database.
4308: #
4309: # Parameters:
4310: # $cmd - The command keyword that initiated this request.
4311: # $tail - Tail of the command. In this case consists of a colon
4312: # separated list contaning the domain to apply this to and
4313: # an ampersand separated list of keyword=value pairs.
1.272 raeburn 4314: # Each value is a colon separated list that includes:
4315: # description, institutional code and course owner.
4316: # For backward compatibility with versions included
4317: # in LON-CAPA 1.1.X (and earlier) and 1.2.X, institutional
4318: # code and/or course owner are preserved from the existing
4319: # record when writing a new record in response to 1.1 or
4320: # 1.2 implementations of lonnet::flushcourselogs().
4321: #
1.234 foxr 4322: # $client - Socket open on the client.
4323: # Returns:
4324: # 1 - indicating that processing should continue
4325: #
4326: # Side effects:
4327: # reply is written to the client.
4328: #
4329: sub put_course_id_handler {
4330: my ($cmd, $tail, $client) = @_;
4331:
4332:
4333: my $userinput = "$cmd:$tail";
4334:
1.266 raeburn 4335: my ($udom, $what) = split(/:/, $tail,2);
1.234 foxr 4336: chomp($what);
4337: my $now=time;
4338: my @pairs=split(/\&/,$what);
4339:
4340: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
4341: if ($hashref) {
4342: foreach my $pair (@pairs) {
1.271 raeburn 4343: my ($key,$courseinfo) = split(/=/,$pair,2);
4344: $courseinfo =~ s/=/:/g;
1.384 raeburn 4345: if (defined($hashref->{$key})) {
4346: my $value = &Apache::lonnet::thaw_unescape($hashref->{$key});
4347: if (ref($value) eq 'HASH') {
4348: my @items = ('description','inst_code','owner','type');
4349: my @new_items = split(/:/,$courseinfo,-1);
4350: my %storehash;
4351: for (my $i=0; $i<@new_items; $i++) {
1.391 raeburn 4352: $storehash{$items[$i]} = &unescape($new_items[$i]);
1.384 raeburn 4353: }
4354: $hashref->{$key} =
4355: &Apache::lonnet::freeze_escape(\%storehash);
4356: my $unesc_key = &unescape($key);
4357: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
4358: next;
1.383 raeburn 4359: }
1.384 raeburn 4360: }
4361: my @current_items = split(/:/,$hashref->{$key},-1);
4362: shift(@current_items); # remove description
4363: pop(@current_items); # remove last access
4364: my $numcurrent = scalar(@current_items);
4365: if ($numcurrent > 3) {
4366: $numcurrent = 3;
4367: }
4368: my @new_items = split(/:/,$courseinfo,-1);
4369: my $numnew = scalar(@new_items);
4370: if ($numcurrent > 0) {
4371: if ($numnew <= $numcurrent) { # flushcourselogs() from pre 2.2
4372: for (my $j=$numcurrent-$numnew; $j>=0; $j--) {
4373: $courseinfo .= ':'.$current_items[$numcurrent-$j-1];
1.333 raeburn 4374: }
1.272 raeburn 4375: }
4376: }
1.384 raeburn 4377: $hashref->{$key}=$courseinfo.':'.$now;
1.234 foxr 4378: }
1.311 albertel 4379: if (&untie_domain_hash($hashref)) {
1.253 foxr 4380: &Reply( $client, "ok\n", $userinput);
1.234 foxr 4381: } else {
1.253 foxr 4382: &Failure($client, "error: ".($!+0)
1.234 foxr 4383: ." untie(GDBM) Failed ".
4384: "while attempting courseidput\n", $userinput);
4385: }
4386: } else {
1.253 foxr 4387: &Failure($client, "error: ".($!+0)
1.234 foxr 4388: ." tie(GDBM) Failed ".
4389: "while attempting courseidput\n", $userinput);
4390: }
4391:
4392: return 1;
4393: }
4394: ®ister_handler("courseidput", \&put_course_id_handler, 0, 1, 0);
4395:
1.383 raeburn 4396: sub put_course_id_hash_handler {
4397: my ($cmd, $tail, $client) = @_;
4398: my $userinput = "$cmd:$tail";
1.384 raeburn 4399: my ($udom,$mode,$what) = split(/:/, $tail,3);
1.383 raeburn 4400: chomp($what);
4401: my $now=time;
4402: my @pairs=split(/\&/,$what);
1.384 raeburn 4403: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
1.383 raeburn 4404: if ($hashref) {
4405: foreach my $pair (@pairs) {
4406: my ($key,$value)=split(/=/,$pair);
1.384 raeburn 4407: my $unesc_key = &unescape($key);
4408: if ($mode ne 'timeonly') {
4409: if (!defined($hashref->{&escape('lasttime:'.$unesc_key)})) {
4410: my $curritems = &Apache::lonnet::thaw_unescape($key);
4411: if (ref($curritems) ne 'HASH') {
4412: my @current_items = split(/:/,$hashref->{$key},-1);
4413: my $lasttime = pop(@current_items);
4414: $hashref->{&escape('lasttime:'.$unesc_key)} = $lasttime;
4415: } else {
4416: $hashref->{&escape('lasttime:'.$unesc_key)} = '';
4417: }
4418: }
4419: $hashref->{$key} = $value;
4420: }
4421: if ($mode ne 'notime') {
4422: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
4423: }
1.383 raeburn 4424: }
4425: if (&untie_domain_hash($hashref)) {
4426: &Reply($client, "ok\n", $userinput);
4427: } else {
4428: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4429: "while attempting courseidputhash\n", $userinput);
4430: }
4431: } else {
4432: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4433: "while attempting courseidputhash\n", $userinput);
4434: }
4435: return 1;
4436: }
4437: ®ister_handler("courseidputhash", \&put_course_id_hash_handler, 0, 1, 0);
4438:
1.234 foxr 4439: # Retrieves the value of a course id resource keyword pattern
4440: # defined since a starting date. Both the starting date and the
4441: # keyword pattern are optional. If the starting date is not supplied it
4442: # is treated as the beginning of time. If the pattern is not found,
4443: # it is treatred as "." matching everything.
4444: #
4445: # Parameters:
4446: # $cmd - Command keyword that resulted in us being dispatched.
4447: # $tail - The remainder of the command that, in this case, consists
4448: # of a colon separated list of:
4449: # domain - The domain in which the course database is
4450: # defined.
4451: # since - Optional parameter describing the minimum
4452: # time of definition(?) of the resources that
4453: # will match the dump.
4454: # description - regular expression that is used to filter
4455: # the dump. Only keywords matching this regexp
4456: # will be used.
1.272 raeburn 4457: # institutional code - optional supplied code to filter
4458: # the dump. Only courses with an institutional code
4459: # that match the supplied code will be returned.
1.336 raeburn 4460: # owner - optional supplied username and domain of owner to
4461: # filter the dump. Only courses for which the course
4462: # owner matches the supplied username and/or domain
4463: # will be returned. Pre-2.2.0 legacy entries from
4464: # nohist_courseiddump will only contain usernames.
1.384 raeburn 4465: # type - optional parameter for selection
1.418 raeburn 4466: # regexp_ok - if 1 or -1 allow the supplied institutional code
4467: # filter to behave as a regular expression:
4468: # 1 will not exclude the course if the instcode matches the RE
4469: # -1 will exclude the course if the instcode matches the RE
1.384 raeburn 4470: # rtn_as_hash - whether to return the information available for
4471: # each matched item as a frozen hash of all
4472: # key, value pairs in the item's hash, or as a
4473: # colon-separated list of (in order) description,
4474: # institutional code, and course owner.
1.404 raeburn 4475: # selfenrollonly - filter by courses allowing self-enrollment
4476: # now or in the future (selfenrollonly = 1).
4477: # catfilter - filter by course category, assigned to a course
4478: # using manually defined categories (i.e., not
1.407 raeburn 4479: # self-cataloging based on on institutional code).
1.404 raeburn 4480: # showhidden - include course in results even if course
1.407 raeburn 4481: # was set to be excluded from course catalog (DC only).
1.404 raeburn 4482: # caller - if set to 'coursecatalog', courses set to be hidden
4483: # from course catalog will be excluded from results (unless
4484: # overridden by "showhidden".
1.427 raeburn 4485: # cloner - escaped username:domain of course cloner (if picking course to
1.419 raeburn 4486: # clone).
4487: # cc_clone_list - escaped comma separated list of courses for which
4488: # course cloner has active CC role (and so can clone
4489: # automatically).
1.427 raeburn 4490: # cloneonly - filter by courses for which cloner has rights to clone.
4491: # createdbefore - include courses for which creation date preceeded this date.
4492: # createdafter - include courses for which creation date followed this date.
4493: # creationcontext - include courses created in specified context
1.404 raeburn 4494: #
1.445 raeburn 4495: # domcloner - flag to indicate if user can create CCs in course's domain.
1.505 raeburn 4496: # If so, ability to clone course is automatic.
4497: # hasuniquecode - filter by courses for which a six character unique code has
4498: # been set.
1.445 raeburn 4499: #
1.234 foxr 4500: # $client - The socket open on the client.
4501: # Returns:
4502: # 1 - Continue processing.
4503: # Side Effects:
4504: # a reply is written to $client.
4505: sub dump_course_id_handler {
4506: my ($cmd, $tail, $client) = @_;
1.494 droeschl 4507:
4508: my $res = LONCAPA::Lond::dump_course_id_handler($tail);
4509: if ($res =~ /^error:/) {
4510: Failure($client, \$res, "$cmd:$tail");
4511: } else {
4512: Reply($client, \$res, "$cmd:$tail");
4513: }
4514:
4515: return 1;
4516:
4517: #TODO remove
1.234 foxr 4518: my $userinput = "$cmd:$tail";
4519:
1.333 raeburn 4520: my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter,
1.404 raeburn 4521: $typefilter,$regexp_ok,$rtn_as_hash,$selfenrollonly,$catfilter,$showhidden,
1.427 raeburn 4522: $caller,$cloner,$cc_clone_list,$cloneonly,$createdbefore,$createdafter,
1.505 raeburn 4523: $creationcontext,$domcloner,$hasuniquecode) =split(/:/,$tail);
1.397 raeburn 4524: my $now = time;
1.419 raeburn 4525: my ($cloneruname,$clonerudom,%cc_clone);
1.234 foxr 4526: if (defined($description)) {
4527: $description=&unescape($description);
4528: } else {
4529: $description='.';
4530: }
1.266 raeburn 4531: if (defined($instcodefilter)) {
4532: $instcodefilter=&unescape($instcodefilter);
4533: } else {
4534: $instcodefilter='.';
4535: }
1.336 raeburn 4536: my ($ownerunamefilter,$ownerdomfilter);
1.266 raeburn 4537: if (defined($ownerfilter)) {
4538: $ownerfilter=&unescape($ownerfilter);
1.336 raeburn 4539: if ($ownerfilter ne '.' && defined($ownerfilter)) {
4540: if ($ownerfilter =~ /^([^:]*):([^:]*)$/) {
4541: $ownerunamefilter = $1;
4542: $ownerdomfilter = $2;
4543: } else {
4544: $ownerunamefilter = $ownerfilter;
4545: $ownerdomfilter = '';
4546: }
4547: }
1.266 raeburn 4548: } else {
4549: $ownerfilter='.';
4550: }
1.336 raeburn 4551:
1.282 raeburn 4552: if (defined($coursefilter)) {
4553: $coursefilter=&unescape($coursefilter);
4554: } else {
4555: $coursefilter='.';
4556: }
1.333 raeburn 4557: if (defined($typefilter)) {
4558: $typefilter=&unescape($typefilter);
4559: } else {
4560: $typefilter='.';
4561: }
1.344 raeburn 4562: if (defined($regexp_ok)) {
4563: $regexp_ok=&unescape($regexp_ok);
4564: }
1.401 raeburn 4565: if (defined($catfilter)) {
4566: $catfilter=&unescape($catfilter);
4567: }
1.419 raeburn 4568: if (defined($cloner)) {
4569: $cloner = &unescape($cloner);
4570: ($cloneruname,$clonerudom) = ($cloner =~ /^($LONCAPA::match_username):($LONCAPA::match_domain)$/);
4571: }
4572: if (defined($cc_clone_list)) {
4573: $cc_clone_list = &unescape($cc_clone_list);
4574: my @cc_cloners = split('&',$cc_clone_list);
4575: foreach my $cid (@cc_cloners) {
4576: my ($clonedom,$clonenum) = split(':',$cid);
4577: next if ($clonedom ne $udom);
4578: $cc_clone{$clonedom.'_'.$clonenum} = 1;
4579: }
4580: }
1.431 raeburn 4581: if ($createdbefore ne '') {
1.427 raeburn 4582: $createdbefore = &unescape($createdbefore);
4583: } else {
4584: $createdbefore = 0;
4585: }
1.431 raeburn 4586: if ($createdafter ne '') {
1.427 raeburn 4587: $createdafter = &unescape($createdafter);
4588: } else {
4589: $createdafter = 0;
4590: }
1.431 raeburn 4591: if ($creationcontext ne '') {
1.427 raeburn 4592: $creationcontext = &unescape($creationcontext);
4593: } else {
4594: $creationcontext = '.';
4595: }
1.505 raeburn 4596: unless ($hasuniquecode) {
4597: $hasuniquecode = '.';
4598: }
1.384 raeburn 4599: my $unpack = 1;
1.485 raeburn 4600: if ($description eq '.' && $instcodefilter eq '.' && $ownerfilter eq '.' &&
1.384 raeburn 4601: $typefilter eq '.') {
4602: $unpack = 0;
4603: }
4604: if (!defined($since)) { $since=0; }
1.234 foxr 4605: my $qresult='';
4606: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
4607: if ($hashref) {
1.384 raeburn 4608: while (my ($key,$value) = each(%$hashref)) {
1.397 raeburn 4609: my ($unesc_key,$lasttime_key,$lasttime,$is_hash,%val,
1.427 raeburn 4610: %unesc_val,$selfenroll_end,$selfenroll_types,$created,
4611: $context);
1.384 raeburn 4612: $unesc_key = &unescape($key);
4613: if ($unesc_key =~ /^lasttime:/) {
4614: next;
4615: } else {
4616: $lasttime_key = &escape('lasttime:'.$unesc_key);
4617: }
4618: if ($hashref->{$lasttime_key} ne '') {
4619: $lasttime = $hashref->{$lasttime_key};
4620: next if ($lasttime<$since);
4621: }
1.419 raeburn 4622: my ($canclone,$valchange);
1.384 raeburn 4623: my $items = &Apache::lonnet::thaw_unescape($value);
4624: if (ref($items) eq 'HASH') {
1.429 raeburn 4625: if ($hashref->{$lasttime_key} eq '') {
1.430 raeburn 4626: next if ($since > 1);
1.429 raeburn 4627: }
1.384 raeburn 4628: $is_hash = 1;
1.445 raeburn 4629: if ($domcloner) {
4630: $canclone = 1;
4631: } elsif (defined($clonerudom)) {
1.419 raeburn 4632: if ($items->{'cloners'}) {
4633: my @cloneable = split(',',$items->{'cloners'});
4634: if (@cloneable) {
4635: if (grep(/^\*$/,@cloneable)) {
4636: $canclone = 1;
4637: } elsif (grep(/^\*:\Q$clonerudom\E$/,@cloneable)) {
4638: $canclone = 1;
4639: } elsif (grep(/^\Q$cloneruname\E:\Q$clonerudom\E$/,@cloneable)) {
4640: $canclone = 1;
4641: }
4642: }
4643: unless ($canclone) {
4644: if ($cloneruname ne '' && $clonerudom ne '') {
4645: if ($cc_clone{$unesc_key}) {
4646: $canclone = 1;
4647: $items->{'cloners'} .= ','.$cloneruname.':'.
4648: $clonerudom;
4649: $valchange = 1;
4650: }
4651: }
4652: }
4653: } elsif (defined($cloneruname)) {
4654: if ($cc_clone{$unesc_key}) {
4655: $canclone = 1;
4656: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
4657: $valchange = 1;
4658: }
1.437 raeburn 4659: unless ($canclone) {
4660: if ($items->{'owner'} =~ /:/) {
4661: if ($items->{'owner'} eq $cloner) {
4662: $canclone = 1;
4663: }
1.444 raeburn 4664: } elsif ($cloner eq $items->{'owner'}.':'.$udom) {
1.437 raeburn 4665: $canclone = 1;
4666: }
4667: if ($canclone) {
4668: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
4669: $valchange = 1;
4670: }
4671: }
1.419 raeburn 4672: }
4673: }
1.384 raeburn 4674: if ($unpack || !$rtn_as_hash) {
4675: $unesc_val{'descr'} = $items->{'description'};
4676: $unesc_val{'inst_code'} = $items->{'inst_code'};
4677: $unesc_val{'owner'} = $items->{'owner'};
4678: $unesc_val{'type'} = $items->{'type'};
1.419 raeburn 4679: $unesc_val{'cloners'} = $items->{'cloners'};
1.427 raeburn 4680: $unesc_val{'created'} = $items->{'created'};
4681: $unesc_val{'context'} = $items->{'context'};
1.404 raeburn 4682: }
4683: $selfenroll_types = $items->{'selfenroll_types'};
4684: $selfenroll_end = $items->{'selfenroll_end_date'};
1.427 raeburn 4685: $created = $items->{'created'};
4686: $context = $items->{'context'};
1.505 raeburn 4687: if ($hasuniquecode ne '.') {
4688: next unless ($items->{'uniquecode'});
4689: }
1.404 raeburn 4690: if ($selfenrollonly) {
4691: next if (!$selfenroll_types);
4692: if (($selfenroll_end > 0) && ($selfenroll_end <= $now)) {
4693: next;
1.397 raeburn 4694: }
1.404 raeburn 4695: }
1.427 raeburn 4696: if ($creationcontext ne '.') {
4697: next if (($context ne '') && ($context ne $creationcontext));
4698: }
4699: if ($createdbefore > 0) {
4700: next if (($created eq '') || ($created > $createdbefore));
4701: }
4702: if ($createdafter > 0) {
4703: next if (($created eq '') || ($created <= $createdafter));
4704: }
1.404 raeburn 4705: if ($catfilter ne '') {
1.406 raeburn 4706: next if ($items->{'categories'} eq '');
4707: my @categories = split('&',$items->{'categories'});
1.407 raeburn 4708: next if (@categories == 0);
4709: my @subcats = split('&',$catfilter);
4710: my $matchcat = 0;
4711: foreach my $cat (@categories) {
4712: if (grep(/^\Q$cat\E$/,@subcats)) {
4713: $matchcat = 1;
4714: last;
4715: }
4716: }
4717: next if (!$matchcat);
1.404 raeburn 4718: }
4719: if ($caller eq 'coursecatalog') {
1.405 raeburn 4720: if ($items->{'hidefromcat'} eq 'yes') {
4721: next if !$showhidden;
1.401 raeburn 4722: }
1.384 raeburn 4723: }
1.383 raeburn 4724: } else {
1.401 raeburn 4725: next if ($catfilter ne '');
1.419 raeburn 4726: next if ($selfenrollonly);
1.427 raeburn 4727: next if ($createdbefore || $createdafter);
4728: next if ($creationcontext ne '.');
1.419 raeburn 4729: if ((defined($clonerudom)) && (defined($cloneruname))) {
4730: if ($cc_clone{$unesc_key}) {
4731: $canclone = 1;
4732: $val{'cloners'} = &escape($cloneruname.':'.$clonerudom);
4733: }
4734: }
1.384 raeburn 4735: $is_hash = 0;
1.388 raeburn 4736: my @courseitems = split(/:/,$value);
1.403 raeburn 4737: $lasttime = pop(@courseitems);
1.402 raeburn 4738: if ($hashref->{$lasttime_key} eq '') {
4739: next if ($lasttime<$since);
4740: }
1.384 raeburn 4741: ($val{'descr'},$val{'inst_code'},$val{'owner'},$val{'type'}) = @courseitems;
1.383 raeburn 4742: }
1.419 raeburn 4743: if ($cloneonly) {
4744: next unless ($canclone);
4745: }
1.266 raeburn 4746: my $match = 1;
1.384 raeburn 4747: if ($description ne '.') {
4748: if (!$is_hash) {
4749: $unesc_val{'descr'} = &unescape($val{'descr'});
4750: }
4751: if (eval{$unesc_val{'descr'} !~ /\Q$description\E/i}) {
1.266 raeburn 4752: $match = 0;
1.384 raeburn 4753: }
1.266 raeburn 4754: }
1.384 raeburn 4755: if ($instcodefilter ne '.') {
4756: if (!$is_hash) {
4757: $unesc_val{'inst_code'} = &unescape($val{'inst_code'});
4758: }
1.418 raeburn 4759: if ($regexp_ok == 1) {
1.384 raeburn 4760: if (eval{$unesc_val{'inst_code'} !~ /$instcodefilter/}) {
1.344 raeburn 4761: $match = 0;
4762: }
1.418 raeburn 4763: } elsif ($regexp_ok == -1) {
4764: if (eval{$unesc_val{'inst_code'} =~ /$instcodefilter/}) {
4765: $match = 0;
4766: }
1.344 raeburn 4767: } else {
1.384 raeburn 4768: if (eval{$unesc_val{'inst_code'} !~ /\Q$instcodefilter\E/i}) {
1.344 raeburn 4769: $match = 0;
4770: }
1.266 raeburn 4771: }
1.234 foxr 4772: }
1.384 raeburn 4773: if ($ownerfilter ne '.') {
4774: if (!$is_hash) {
4775: $unesc_val{'owner'} = &unescape($val{'owner'});
4776: }
1.336 raeburn 4777: if (($ownerunamefilter ne '') && ($ownerdomfilter ne '')) {
1.384 raeburn 4778: if ($unesc_val{'owner'} =~ /:/) {
4779: if (eval{$unesc_val{'owner'} !~
4780: /\Q$ownerunamefilter\E:\Q$ownerdomfilter\E$/i}) {
1.336 raeburn 4781: $match = 0;
4782: }
4783: } else {
1.384 raeburn 4784: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4785: $match = 0;
4786: }
4787: }
4788: } elsif ($ownerunamefilter ne '') {
1.384 raeburn 4789: if ($unesc_val{'owner'} =~ /:/) {
4790: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E:[^:]+$/i}) {
1.336 raeburn 4791: $match = 0;
4792: }
4793: } else {
1.384 raeburn 4794: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4795: $match = 0;
4796: }
4797: }
4798: } elsif ($ownerdomfilter ne '') {
1.384 raeburn 4799: if ($unesc_val{'owner'} =~ /:/) {
4800: if (eval{$unesc_val{'owner'} !~ /^[^:]+:\Q$ownerdomfilter\E/}) {
1.336 raeburn 4801: $match = 0;
4802: }
4803: } else {
4804: if ($ownerdomfilter ne $udom) {
4805: $match = 0;
4806: }
4807: }
1.266 raeburn 4808: }
4809: }
1.384 raeburn 4810: if ($coursefilter ne '.') {
4811: if (eval{$unesc_key !~ /^$udom(_)\Q$coursefilter\E$/}) {
1.282 raeburn 4812: $match = 0;
4813: }
4814: }
1.384 raeburn 4815: if ($typefilter ne '.') {
4816: if (!$is_hash) {
4817: $unesc_val{'type'} = &unescape($val{'type'});
4818: }
4819: if ($unesc_val{'type'} eq '') {
1.333 raeburn 4820: if ($typefilter ne 'Course') {
4821: $match = 0;
4822: }
1.383 raeburn 4823: } else {
1.384 raeburn 4824: if (eval{$unesc_val{'type'} !~ /^\Q$typefilter\E$/}) {
1.333 raeburn 4825: $match = 0;
4826: }
4827: }
4828: }
1.266 raeburn 4829: if ($match == 1) {
1.384 raeburn 4830: if ($rtn_as_hash) {
4831: if ($is_hash) {
1.419 raeburn 4832: if ($valchange) {
4833: my $newvalue = &Apache::lonnet::freeze_escape($items);
4834: $qresult.=$key.'='.$newvalue.'&';
4835: } else {
4836: $qresult.=$key.'='.$value.'&';
4837: }
1.384 raeburn 4838: } else {
1.388 raeburn 4839: my %rtnhash = ( 'description' => &unescape($val{'descr'}),
4840: 'inst_code' => &unescape($val{'inst_code'}),
4841: 'owner' => &unescape($val{'owner'}),
4842: 'type' => &unescape($val{'type'}),
1.419 raeburn 4843: 'cloners' => &unescape($val{'cloners'}),
1.384 raeburn 4844: );
4845: my $items = &Apache::lonnet::freeze_escape(\%rtnhash);
4846: $qresult.=$key.'='.$items.'&';
4847: }
1.383 raeburn 4848: } else {
1.384 raeburn 4849: if ($is_hash) {
4850: $qresult .= $key.'='.&escape($unesc_val{'descr'}).':'.
4851: &escape($unesc_val{'inst_code'}).':'.
4852: &escape($unesc_val{'owner'}).'&';
4853: } else {
4854: $qresult .= $key.'='.$val{'descr'}.':'.$val{'inst_code'}.
4855: ':'.$val{'owner'}.'&';
4856: }
1.383 raeburn 4857: }
1.266 raeburn 4858: }
1.234 foxr 4859: }
1.311 albertel 4860: if (&untie_domain_hash($hashref)) {
1.234 foxr 4861: chop($qresult);
1.387 albertel 4862: &Reply($client, \$qresult, $userinput);
1.234 foxr 4863: } else {
4864: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4865: "while attempting courseiddump\n", $userinput);
4866: }
4867: } else {
4868: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4869: "while attempting courseiddump\n", $userinput);
4870: }
4871: return 1;
4872: }
4873: ®ister_handler("courseiddump", \&dump_course_id_handler, 0, 1, 0);
1.238 foxr 4874:
1.438 raeburn 4875: sub course_lastaccess_handler {
4876: my ($cmd, $tail, $client) = @_;
4877: my $userinput = "$cmd:$tail";
4878: my ($cdom,$cnum) = split(':',$tail);
4879: my (%lastaccess,$qresult);
4880: my $hashref = &tie_domain_hash($cdom, "nohist_courseids", &GDBM_WRCREAT());
4881: if ($hashref) {
4882: while (my ($key,$value) = each(%$hashref)) {
4883: my ($unesc_key,$lasttime);
4884: $unesc_key = &unescape($key);
4885: if ($cnum) {
4886: next unless ($unesc_key =~ /\Q$cdom\E_\Q$cnum\E$/);
4887: }
4888: if ($unesc_key =~ /^lasttime:($LONCAPA::match_domain\_$LONCAPA::match_courseid)/) {
4889: $lastaccess{$1} = $value;
4890: } else {
4891: my $items = &Apache::lonnet::thaw_unescape($value);
4892: if (ref($items) eq 'HASH') {
4893: unless ($lastaccess{$unesc_key}) {
4894: $lastaccess{$unesc_key} = '';
4895: }
4896: } else {
4897: my @courseitems = split(':',$value);
4898: $lastaccess{$unesc_key} = pop(@courseitems);
4899: }
4900: }
4901: }
4902: foreach my $cid (sort(keys(%lastaccess))) {
4903: $qresult.=&escape($cid).'='.$lastaccess{$cid}.'&';
4904: }
4905: if (&untie_domain_hash($hashref)) {
4906: if ($qresult) {
4907: chop($qresult);
4908: }
4909: &Reply($client, \$qresult, $userinput);
4910: } else {
4911: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4912: "while attempting lastacourseaccess\n", $userinput);
4913: }
4914: } else {
4915: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4916: "while attempting lastcourseaccess\n", $userinput);
4917: }
4918: return 1;
4919: }
4920: ®ister_handler("courselastaccess",\&course_lastaccess_handler, 0, 1, 0);
4921:
1.561 raeburn 4922: sub course_sessions_handler {
4923: my ($cmd, $tail, $client) = @_;
4924: my $userinput = "$cmd:$tail";
4925: my ($cdom,$cnum,$lastactivity) = split(':',$tail);
4926: my $dbsuffix = '_'.$cdom.'_'.$cnum.'.db';
4927: my (%sessions,$qresult);
4928: my $now=time;
4929: if (opendir(DIR,$perlvar{'lonIDsDir'})) {
4930: my $filename;
4931: while ($filename=readdir(DIR)) {
4932: next if ($filename=~/^\./);
4933: next if ($filename=~/^publicuser_/);
4934: next if ($filename=~/^[a-f0-9]+_(linked|lti_\d+)\.id$/);
1.562 raeburn 4935: if ($filename =~ /^($LONCAPA::match_username)_\d+_($LONCAPA::match_domain)_/) {
1.561 raeburn 4936: my ($uname,$udom) = ($1,$2);
1.562 raeburn 4937: next unless (-e "$perlvar{'lonDaemons'}/tmp/$uname$dbsuffix");
1.561 raeburn 4938: my $mtime = (stat("$perlvar{'lonIDsDir'}/$filename"))[9];
4939: if ($lastactivity < 0) {
1.563 raeburn 4940: next if ($mtime-$now > $lastactivity);
1.561 raeburn 4941: } else {
1.563 raeburn 4942: next if ($now-$mtime > $lastactivity);
1.561 raeburn 4943: }
4944: $sessions{$uname.':'.$udom} = $mtime;
4945: }
4946: }
4947: closedir(DIR);
4948: }
4949: foreach my $user (keys(%sessions)) {
4950: $qresult.=&escape($user).'='.$sessions{$user}.'&';
4951: }
4952: if ($qresult) {
4953: chop($qresult);
4954: }
4955: &Reply($client, \$qresult, $userinput);
4956: return 1;
4957: }
4958: ®ister_handler("coursesessions",\&course_sessions_handler, 0, 1, 0);
4959:
1.238 foxr 4960: #
1.348 raeburn 4961: # Puts an unencrypted entry in a namespace db file at the domain level
4962: #
4963: # Parameters:
4964: # $cmd - The command that got us here.
4965: # $tail - Tail of the command (remaining parameters).
4966: # $client - File descriptor connected to client.
4967: # Returns
4968: # 0 - Requested to exit, caller should shut down.
4969: # 1 - Continue processing.
4970: # Side effects:
4971: # reply is written to $client.
4972: #
4973: sub put_domain_handler {
4974: my ($cmd,$tail,$client) = @_;
4975:
4976: my $userinput = "$cmd:$tail";
4977:
4978: my ($udom,$namespace,$what) =split(/:/,$tail,3);
4979: chomp($what);
4980: my @pairs=split(/\&/,$what);
4981: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_WRCREAT(),
4982: "P", $what);
4983: if ($hashref) {
4984: foreach my $pair (@pairs) {
4985: my ($key,$value)=split(/=/,$pair);
4986: $hashref->{$key}=$value;
4987: }
4988: if (&untie_domain_hash($hashref)) {
4989: &Reply($client, "ok\n", $userinput);
4990: } else {
4991: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4992: "while attempting putdom\n", $userinput);
4993: }
4994: } else {
4995: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4996: "while attempting putdom\n", $userinput);
4997: }
4998:
4999: return 1;
5000: }
5001: ®ister_handler("putdom", \&put_domain_handler, 0, 1, 0);
5002:
1.517 raeburn 5003: # Updates one or more entries in clickers.db file at the domain level
5004: #
5005: # Parameters:
5006: # $cmd - The command that got us here.
5007: # $tail - Tail of the command (remaining parameters).
5008: # In this case a colon separated list containing:
5009: # (a) the domain for which we are updating the entries,
5010: # (b) the action required -- add or del -- and
5011: # (c) a &-separated list of entries to add or delete.
5012: # $client - File descriptor connected to client.
5013: # Returns
5014: # 1 - Continue processing.
5015: # 0 - Requested to exit, caller should shut down.
5016: # Side effects:
5017: # reply is written to $client.
5018: #
5019:
5020:
5021: sub update_clickers {
5022: my ($cmd, $tail, $client) = @_;
5023:
5024: my $userinput = "$cmd:$tail";
5025: my ($udom,$action,$what) =split(/:/,$tail,3);
5026: chomp($what);
5027:
5028: my $hashref = &tie_domain_hash($udom, "clickers", &GDBM_WRCREAT(),
5029: "U","$action:$what");
5030:
5031: if (!$hashref) {
5032: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5033: "while attempting updateclickers\n", $userinput);
5034: return 1;
5035: }
5036:
5037: my @pairs=split(/\&/,$what);
5038: foreach my $pair (@pairs) {
5039: my ($key,$value)=split(/=/,$pair);
5040: if ($action eq 'add') {
5041: if (exists($hashref->{$key})) {
5042: my @newvals = split(/,/,&unescape($value));
5043: my @currvals = split(/,/,&unescape($hashref->{$key}));
5044: my @merged = sort(keys(%{{map { $_ => 1 } (@newvals,@currvals)}}));
5045: $hashref->{$key}=&escape(join(',',@merged));
5046: } else {
5047: $hashref->{$key}=$value;
5048: }
5049: } elsif ($action eq 'del') {
5050: if (exists($hashref->{$key})) {
5051: my %current;
5052: map { $current{$_} = 1; } split(/,/,&unescape($hashref->{$key}));
5053: map { delete($current{$_}); } split(/,/,&unescape($value));
5054: if (keys(%current)) {
5055: $hashref->{$key}=&escape(join(',',sort(keys(%current))));
5056: } else {
5057: delete($hashref->{$key});
5058: }
5059: }
5060: }
5061: }
5062: if (&untie_user_hash($hashref)) {
5063: &Reply( $client, "ok\n", $userinput);
5064: } else {
5065: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
5066: "while attempting put\n",
5067: $userinput);
5068: }
5069: return 1;
5070: }
5071: ®ister_handler("updateclickers", \&update_clickers, 0, 1, 0);
5072:
5073:
5074: # Deletes one or more entries in a namespace db file at the domain level
5075: #
5076: # Parameters:
5077: # $cmd - The command that got us here.
5078: # $tail - Tail of the command (remaining parameters).
5079: # In this case a colon separated list containing:
5080: # (a) the domain for which we are deleting the entries,
5081: # (b) &-separated list of keys to delete.
5082: # $client - File descriptor connected to client.
5083: # Returns
5084: # 1 - Continue processing.
5085: # 0 - Requested to exit, caller should shut down.
5086: # Side effects:
5087: # reply is written to $client.
5088: #
5089:
5090: sub del_domain_handler {
5091: my ($cmd,$tail,$client) = @_;
5092:
5093: my $userinput = "$cmd:$tail";
5094:
5095: my ($udom,$namespace,$what)=split(/:/,$tail,3);
5096: chomp($what);
5097: my $hashref = &tie_domain_hash($udom,$namespace,&GDBM_WRCREAT(),
5098: "D", $what);
5099: if ($hashref) {
5100: my @keys=split(/\&/,$what);
5101: foreach my $key (@keys) {
5102: delete($hashref->{$key});
5103: }
5104: if (&untie_user_hash($hashref)) {
5105: &Reply($client, "ok\n", $userinput);
5106: } else {
5107: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5108: "while attempting deldom\n", $userinput);
5109: }
5110: } else {
5111: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5112: "while attempting deldom\n", $userinput);
5113: }
5114: return 1;
5115: }
5116: ®ister_handler("deldom", \&del_domain_handler, 0, 1, 0);
5117:
5118:
1.348 raeburn 5119: # Unencrypted get from the namespace database file at the domain level.
5120: # This function retrieves a keyed item from a specific named database in the
5121: # domain directory.
5122: #
5123: # Parameters:
1.565 raeburn 5124: # $cmd - Command request keyword (getdom).
1.348 raeburn 5125: # $tail - Tail of the command. This is a colon separated list
5126: # consisting of the domain and the 'namespace'
5127: # which selects the gdbm file to do the lookup in,
5128: # & separated list of keys to lookup. Note that
5129: # the values are returned as an & separated list too.
5130: # $client - File descriptor open on the client.
5131: # Returns:
5132: # 1 - Continue processing.
5133: # 0 - Exit.
5134: # Side effects:
5135: # reply is written to $client.
5136: #
5137:
5138: sub get_domain_handler {
5139: my ($cmd, $tail, $client) = @_;
5140:
1.536 raeburn 5141: my $userinput = "$cmd:$tail";
5142:
5143: my ($udom,$namespace,$what)=split(/:/,$tail,3);
5144: if ($namespace =~ /^enc/) {
5145: &Failure( $client, "refused\n", $userinput);
5146: } else {
1.565 raeburn 5147: my $res = LONCAPA::Lond::get_dom($userinput);
5148: if ($res =~ /^error:/) {
5149: &Failure($client, \$res, $userinput);
1.536 raeburn 5150: } else {
1.565 raeburn 5151: &Reply($client, \$res, $userinput);
1.536 raeburn 5152: }
5153: }
5154:
5155: return 1;
5156: }
5157: ®ister_handler("getdom", \&get_domain_handler, 0, 1, 0);
5158:
5159: sub encrypted_get_domain_handler {
5160: my ($cmd, $tail, $client) = @_;
5161:
5162: my $userinput = "$cmd:$tail";
1.348 raeburn 5163:
1.565 raeburn 5164: my $res = LONCAPA::Lond::get_dom($userinput);
5165: if ($res =~ /^error:/) {
5166: &Failure($client, \$res, $userinput);
5167: } else {
5168: if ($cipher) {
5169: my $cmdlength=length($res);
5170: $res.=" ";
5171: my $encres='';
5172: for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
5173: $encres.= unpack("H16",
5174: $cipher->encrypt(substr($res,
5175: $encidx,
5176: 8)));
1.536 raeburn 5177: }
1.565 raeburn 5178: &Reply( $client,"enc:$cmdlength:$encres\n",$userinput);
1.348 raeburn 5179: } else {
1.565 raeburn 5180: &Failure( $client, "error:no_key\n",$userinput);
1.348 raeburn 5181: }
5182: }
5183: return 1;
5184: }
1.536 raeburn 5185: ®ister_handler("egetdom", \&encrypted_get_domain_handler, 1, 1, 0);
1.348 raeburn 5186:
1.420 raeburn 5187: #
1.238 foxr 5188: # Puts an id to a domains id database.
5189: #
5190: # Parameters:
5191: # $cmd - The command that triggered us.
5192: # $tail - Remainder of the request other than the command. This is a
5193: # colon separated list containing:
5194: # $domain - The domain for which we are writing the id.
5195: # $pairs - The id info to write... this is and & separated list
5196: # of keyword=value.
5197: # $client - Socket open on the client.
5198: # Returns:
5199: # 1 - Continue processing.
5200: # Side effects:
5201: # reply is written to $client.
5202: #
5203: sub put_id_handler {
5204: my ($cmd,$tail,$client) = @_;
5205:
5206:
5207: my $userinput = "$cmd:$tail";
5208:
5209: my ($udom,$what)=split(/:/,$tail);
5210: chomp($what);
5211: my @pairs=split(/\&/,$what);
5212: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
5213: "P", $what);
5214: if ($hashref) {
5215: foreach my $pair (@pairs) {
5216: my ($key,$value)=split(/=/,$pair);
5217: $hashref->{$key}=$value;
5218: }
1.311 albertel 5219: if (&untie_domain_hash($hashref)) {
1.238 foxr 5220: &Reply($client, "ok\n", $userinput);
5221: } else {
5222: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5223: "while attempting idput\n", $userinput);
5224: }
5225: } else {
5226: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5227: "while attempting idput\n", $userinput);
5228: }
5229:
5230: return 1;
5231: }
1.263 albertel 5232: ®ister_handler("idput", \&put_id_handler, 0, 1, 0);
1.238 foxr 5233:
5234: #
5235: # Retrieves a set of id values from the id database.
5236: # Returns an & separated list of results, one for each requested id to the
5237: # client.
5238: #
5239: # Parameters:
5240: # $cmd - Command keyword that caused us to be dispatched.
5241: # $tail - Tail of the command. Consists of a colon separated:
5242: # domain - the domain whose id table we dump
5243: # ids Consists of an & separated list of
5244: # id keywords whose values will be fetched.
5245: # nonexisting keywords will have an empty value.
5246: # $client - Socket open on the client.
5247: #
5248: # Returns:
5249: # 1 - indicating processing should continue.
5250: # Side effects:
5251: # An & separated list of results is written to $client.
5252: #
5253: sub get_id_handler {
5254: my ($cmd, $tail, $client) = @_;
5255:
5256:
5257: my $userinput = "$client:$tail";
5258:
5259: my ($udom,$what)=split(/:/,$tail);
5260: chomp($what);
5261: my @queries=split(/\&/,$what);
5262: my $qresult='';
5263: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_READER());
5264: if ($hashref) {
5265: for (my $i=0;$i<=$#queries;$i++) {
5266: $qresult.="$hashref->{$queries[$i]}&";
5267: }
1.311 albertel 5268: if (&untie_domain_hash($hashref)) {
1.238 foxr 5269: $qresult=~s/\&$//;
1.387 albertel 5270: &Reply($client, \$qresult, $userinput);
1.238 foxr 5271: } else {
5272: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
5273: "while attempting idget\n",$userinput);
5274: }
5275: } else {
5276: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
5277: "while attempting idget\n",$userinput);
5278: }
5279:
5280: return 1;
5281: }
1.263 albertel 5282: ®ister_handler("idget", \&get_id_handler, 0, 1, 0);
1.238 foxr 5283:
1.501 raeburn 5284: # Deletes one or more ids in a domain's id database.
5285: #
5286: # Parameters:
5287: # $cmd - Command keyword (iddel).
5288: # $tail - Command tail. In this case a colon
5289: # separated list containing:
5290: # The domain for which we are deleting the id(s).
5291: # &-separated list of id(s) to delete.
5292: # $client - File open on client socket.
5293: # Returns:
5294: # 1 - Continue processing
5295: # 0 - Exit server.
5296: #
5297: #
5298:
5299: sub del_id_handler {
5300: my ($cmd,$tail,$client) = @_;
5301:
5302: my $userinput = "$cmd:$tail";
5303:
5304: my ($udom,$what)=split(/:/,$tail);
5305: chomp($what);
5306: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
5307: "D", $what);
5308: if ($hashref) {
5309: my @keys=split(/\&/,$what);
5310: foreach my $key (@keys) {
5311: delete($hashref->{$key});
5312: }
5313: if (&untie_user_hash($hashref)) {
5314: &Reply($client, "ok\n", $userinput);
5315: } else {
5316: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5317: "while attempting iddel\n", $userinput);
5318: }
5319: } else {
5320: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5321: "while attempting iddel\n", $userinput);
5322: }
5323: return 1;
5324: }
5325: ®ister_handler("iddel", \&del_id_handler, 0, 1, 0);
5326:
1.238 foxr 5327: #
1.299 raeburn 5328: # Puts broadcast e-mail sent by Domain Coordinator in nohist_dcmail database
5329: #
5330: # Parameters
5331: # $cmd - Command keyword that caused us to be dispatched.
5332: # $tail - Tail of the command. Consists of a colon separated:
5333: # domain - the domain whose dcmail we are recording
5334: # email Consists of key=value pair
5335: # where key is unique msgid
5336: # and value is message (in XML)
5337: # $client - Socket open on the client.
5338: #
5339: # Returns:
5340: # 1 - indicating processing should continue.
5341: # Side effects
5342: # reply is written to $client.
5343: #
5344: sub put_dcmail_handler {
5345: my ($cmd,$tail,$client) = @_;
5346: my $userinput = "$cmd:$tail";
1.463 foxr 5347:
5348:
1.299 raeburn 5349: my ($udom,$what)=split(/:/,$tail);
5350: chomp($what);
5351: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
5352: if ($hashref) {
5353: my ($key,$value)=split(/=/,$what);
5354: $hashref->{$key}=$value;
5355: }
1.311 albertel 5356: if (&untie_domain_hash($hashref)) {
1.299 raeburn 5357: &Reply($client, "ok\n", $userinput);
5358: } else {
5359: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5360: "while attempting dcmailput\n", $userinput);
5361: }
5362: return 1;
5363: }
5364: ®ister_handler("dcmailput", \&put_dcmail_handler, 0, 1, 0);
5365:
5366: #
5367: # Retrieves broadcast e-mail from nohist_dcmail database
5368: # Returns to client an & separated list of key=value pairs,
5369: # where key is msgid and value is message information.
5370: #
5371: # Parameters
5372: # $cmd - Command keyword that caused us to be dispatched.
5373: # $tail - Tail of the command. Consists of a colon separated:
5374: # domain - the domain whose dcmail table we dump
5375: # startfilter - beginning of time window
5376: # endfilter - end of time window
5377: # sendersfilter - & separated list of username:domain
5378: # for senders to search for.
5379: # $client - Socket open on the client.
5380: #
5381: # Returns:
5382: # 1 - indicating processing should continue.
5383: # Side effects
5384: # reply (& separated list of msgid=messageinfo pairs) is
5385: # written to $client.
5386: #
5387: sub dump_dcmail_handler {
5388: my ($cmd, $tail, $client) = @_;
5389:
5390: my $userinput = "$cmd:$tail";
5391: my ($udom,$startfilter,$endfilter,$sendersfilter) = split(/:/,$tail);
5392: chomp($sendersfilter);
5393: my @senders = ();
5394: if (defined($startfilter)) {
5395: $startfilter=&unescape($startfilter);
5396: } else {
5397: $startfilter='.';
5398: }
5399: if (defined($endfilter)) {
5400: $endfilter=&unescape($endfilter);
5401: } else {
5402: $endfilter='.';
5403: }
5404: if (defined($sendersfilter)) {
5405: $sendersfilter=&unescape($sendersfilter);
1.300 albertel 5406: @senders = map { &unescape($_) } split(/\&/,$sendersfilter);
1.299 raeburn 5407: }
5408:
5409: my $qresult='';
5410: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
5411: if ($hashref) {
5412: while (my ($key,$value) = each(%$hashref)) {
5413: my $match = 1;
1.303 albertel 5414: my ($timestamp,$subj,$uname,$udom) =
5415: split(/:/,&unescape(&unescape($key)),5); # yes, twice really
1.299 raeburn 5416: $subj = &unescape($subj);
5417: unless ($startfilter eq '.' || !defined($startfilter)) {
5418: if ($timestamp < $startfilter) {
5419: $match = 0;
5420: }
5421: }
5422: unless ($endfilter eq '.' || !defined($endfilter)) {
5423: if ($timestamp > $endfilter) {
5424: $match = 0;
5425: }
5426: }
5427: unless (@senders < 1) {
5428: unless (grep/^$uname:$udom$/,@senders) {
5429: $match = 0;
5430: }
5431: }
5432: if ($match == 1) {
5433: $qresult.=$key.'='.$value.'&';
5434: }
5435: }
1.311 albertel 5436: if (&untie_domain_hash($hashref)) {
1.299 raeburn 5437: chop($qresult);
1.387 albertel 5438: &Reply($client, \$qresult, $userinput);
1.299 raeburn 5439: } else {
5440: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5441: "while attempting dcmaildump\n", $userinput);
5442: }
5443: } else {
5444: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
5445: "while attempting dcmaildump\n", $userinput);
5446: }
5447: return 1;
5448: }
5449:
5450: ®ister_handler("dcmaildump", \&dump_dcmail_handler, 0, 1, 0);
5451:
5452: #
5453: # Puts domain roles in nohist_domainroles database
5454: #
5455: # Parameters
5456: # $cmd - Command keyword that caused us to be dispatched.
5457: # $tail - Tail of the command. Consists of a colon separated:
5458: # domain - the domain whose roles we are recording
5459: # role - Consists of key=value pair
5460: # where key is unique role
5461: # and value is start/end date information
5462: # $client - Socket open on the client.
5463: #
5464: # Returns:
5465: # 1 - indicating processing should continue.
5466: # Side effects
5467: # reply is written to $client.
5468: #
5469:
5470: sub put_domainroles_handler {
5471: my ($cmd,$tail,$client) = @_;
5472:
5473: my $userinput = "$cmd:$tail";
5474: my ($udom,$what)=split(/:/,$tail);
5475: chomp($what);
5476: my @pairs=split(/\&/,$what);
5477: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
5478: if ($hashref) {
5479: foreach my $pair (@pairs) {
5480: my ($key,$value)=split(/=/,$pair);
5481: $hashref->{$key}=$value;
5482: }
1.311 albertel 5483: if (&untie_domain_hash($hashref)) {
1.299 raeburn 5484: &Reply($client, "ok\n", $userinput);
5485: } else {
5486: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5487: "while attempting domroleput\n", $userinput);
5488: }
5489: } else {
5490: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5491: "while attempting domroleput\n", $userinput);
5492: }
5493:
5494: return 1;
5495: }
5496:
5497: ®ister_handler("domroleput", \&put_domainroles_handler, 0, 1, 0);
5498:
5499: #
5500: # Retrieves domain roles from nohist_domainroles database
5501: # Returns to client an & separated list of key=value pairs,
5502: # where key is role and value is start and end date information.
5503: #
5504: # Parameters
5505: # $cmd - Command keyword that caused us to be dispatched.
5506: # $tail - Tail of the command. Consists of a colon separated:
5507: # domain - the domain whose domain roles table we dump
5508: # $client - Socket open on the client.
5509: #
5510: # Returns:
5511: # 1 - indicating processing should continue.
5512: # Side effects
5513: # reply (& separated list of role=start/end info pairs) is
5514: # written to $client.
5515: #
5516: sub dump_domainroles_handler {
5517: my ($cmd, $tail, $client) = @_;
5518:
5519: my $userinput = "$cmd:$tail";
5520: my ($udom,$startfilter,$endfilter,$rolesfilter) = split(/:/,$tail);
5521: chomp($rolesfilter);
5522: my @roles = ();
5523: if (defined($startfilter)) {
5524: $startfilter=&unescape($startfilter);
5525: } else {
5526: $startfilter='.';
5527: }
5528: if (defined($endfilter)) {
5529: $endfilter=&unescape($endfilter);
5530: } else {
5531: $endfilter='.';
5532: }
5533: if (defined($rolesfilter)) {
5534: $rolesfilter=&unescape($rolesfilter);
1.300 albertel 5535: @roles = split(/\&/,$rolesfilter);
1.299 raeburn 5536: }
1.421 raeburn 5537:
1.299 raeburn 5538: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
5539: if ($hashref) {
5540: my $qresult = '';
5541: while (my ($key,$value) = each(%$hashref)) {
5542: my $match = 1;
1.421 raeburn 5543: my ($end,$start) = split(/:/,&unescape($value));
1.299 raeburn 5544: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,&unescape($key));
1.421 raeburn 5545: unless (@roles < 1) {
5546: unless (grep/^\Q$trole\E$/,@roles) {
5547: $match = 0;
5548: next;
5549: }
5550: }
1.299 raeburn 5551: unless ($startfilter eq '.' || !defined($startfilter)) {
1.415 raeburn 5552: if ((defined($start)) && ($start >= $startfilter)) {
1.299 raeburn 5553: $match = 0;
1.421 raeburn 5554: next;
1.299 raeburn 5555: }
5556: }
5557: unless ($endfilter eq '.' || !defined($endfilter)) {
1.421 raeburn 5558: if ((defined($end)) && (($end > 0) && ($end <= $endfilter))) {
1.299 raeburn 5559: $match = 0;
1.421 raeburn 5560: next;
1.299 raeburn 5561: }
5562: }
5563: if ($match == 1) {
5564: $qresult.=$key.'='.$value.'&';
5565: }
5566: }
1.311 albertel 5567: if (&untie_domain_hash($hashref)) {
1.299 raeburn 5568: chop($qresult);
1.387 albertel 5569: &Reply($client, \$qresult, $userinput);
1.299 raeburn 5570: } else {
5571: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5572: "while attempting domrolesdump\n", $userinput);
5573: }
5574: } else {
5575: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
5576: "while attempting domrolesdump\n", $userinput);
5577: }
5578: return 1;
5579: }
5580:
5581: ®ister_handler("domrolesdump", \&dump_domainroles_handler, 0, 1, 0);
5582:
5583:
1.238 foxr 5584: # Process the tmpput command I'm not sure what this does.. Seems to
5585: # create a file in the lonDaemons/tmp directory of the form $id.tmp
5586: # where Id is the client's ip concatenated with a sequence number.
5587: # The file will contain some value that is passed in. Is this e.g.
5588: # a login token?
5589: #
5590: # Parameters:
5591: # $cmd - The command that got us dispatched.
5592: # $tail - The remainder of the request following $cmd:
5593: # In this case this will be the contents of the file.
5594: # $client - Socket connected to the client.
5595: # Returns:
5596: # 1 indicating processing can continue.
5597: # Side effects:
5598: # A file is created in the local filesystem.
5599: # A reply is sent to the client.
5600: sub tmp_put_handler {
5601: my ($cmd, $what, $client) = @_;
5602:
5603: my $userinput = "$cmd:$what"; # Reconstruct for logging.
5604:
1.347 raeburn 5605: my ($record,$context) = split(/:/,$what);
5606: if ($context ne '') {
5607: chomp($context);
5608: $context = &unescape($context);
5609: }
5610: my ($id,$store);
1.238 foxr 5611: $tmpsnum++;
1.454 raeburn 5612: if (($context eq 'resetpw') || ($context eq 'createaccount')) {
1.347 raeburn 5613: $id = &md5_hex(&md5_hex(time.{}.rand().$$));
5614: } else {
5615: $id = $$.'_'.$clientip.'_'.$tmpsnum;
5616: }
1.238 foxr 5617: $id=~s/\W/\_/g;
1.347 raeburn 5618: $record=~s/\n//g;
1.238 foxr 5619: my $execdir=$perlvar{'lonDaemons'};
5620: if ($store=IO::File->new(">$execdir/tmp/$id.tmp")) {
1.347 raeburn 5621: print $store $record;
1.238 foxr 5622: close $store;
1.387 albertel 5623: &Reply($client, \$id, $userinput);
1.238 foxr 5624: } else {
5625: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
5626: "while attempting tmpput\n", $userinput);
5627: }
5628: return 1;
5629:
5630: }
5631: ®ister_handler("tmpput", \&tmp_put_handler, 0, 1, 0);
1.263 albertel 5632:
1.238 foxr 5633: # Processes the tmpget command. This command returns the contents
5634: # of a temporary resource file(?) created via tmpput.
5635: #
5636: # Paramters:
5637: # $cmd - Command that got us dispatched.
5638: # $id - Tail of the command, contain the id of the resource
5639: # we want to fetch.
5640: # $client - socket open on the client.
5641: # Return:
5642: # 1 - Inidcating processing can continue.
5643: # Side effects:
5644: # A reply is sent to the client.
5645: #
5646: sub tmp_get_handler {
5647: my ($cmd, $id, $client) = @_;
5648:
5649: my $userinput = "$cmd:$id";
5650:
5651:
5652: $id=~s/\W/\_/g;
5653: my $store;
5654: my $execdir=$perlvar{'lonDaemons'};
5655: if ($store=IO::File->new("$execdir/tmp/$id.tmp")) {
5656: my $reply=<$store>;
1.387 albertel 5657: &Reply( $client, \$reply, $userinput);
1.238 foxr 5658: close $store;
5659: } else {
5660: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
5661: "while attempting tmpget\n", $userinput);
5662: }
5663:
5664: return 1;
5665: }
5666: ®ister_handler("tmpget", \&tmp_get_handler, 0, 1, 0);
1.263 albertel 5667:
1.238 foxr 5668: #
5669: # Process the tmpdel command. This command deletes a temp resource
5670: # created by the tmpput command.
5671: #
5672: # Parameters:
5673: # $cmd - Command that got us here.
5674: # $id - Id of the temporary resource created.
5675: # $client - socket open on the client process.
5676: #
5677: # Returns:
5678: # 1 - Indicating processing should continue.
5679: # Side Effects:
5680: # A file is deleted
5681: # A reply is sent to the client.
5682: sub tmp_del_handler {
5683: my ($cmd, $id, $client) = @_;
5684:
5685: my $userinput= "$cmd:$id";
5686:
5687: chomp($id);
5688: $id=~s/\W/\_/g;
5689: my $execdir=$perlvar{'lonDaemons'};
5690: if (unlink("$execdir/tmp/$id.tmp")) {
5691: &Reply($client, "ok\n", $userinput);
5692: } else {
5693: &Failure( $client, "error: ".($!+0)."Unlink tmp Failed ".
5694: "while attempting tmpdel\n", $userinput);
5695: }
5696:
5697: return 1;
5698:
5699: }
5700: ®ister_handler("tmpdel", \&tmp_del_handler, 0, 1, 0);
1.263 albertel 5701:
1.238 foxr 5702: #
1.564 raeburn 5703: # Process the updatebalcookie command. This command updates a
5704: # cookie in the lonBalancedir directory on a load balancer node.
5705: #
5706: # Parameters:
5707: # $cmd - Command that got us here.
5708: # $tail - Tail of the request (escaped cookie: escaped current entry)
5709: #
5710: # $client - socket open on the client process.
5711: #
5712: # Returns:
5713: # 1 - Indicating processing should continue.
5714: # Side Effects:
5715: # A cookie file is updated from the lonBalancedir directory
5716: # A reply is sent to the client.
5717: #
5718: sub update_balcookie_handler {
5719: my ($cmd, $tail, $client) = @_;
5720:
5721: my $userinput= "$cmd:$tail";
5722: chomp($tail);
5723: my ($cookie,$lastentry) = map { &unescape($_) } (split(/:/,$tail));
5724:
5725: my $updatedone;
5726: if ($cookie =~ /^$LONCAPA::match_domain\_$LONCAPA::match_username\_[a-f0-9]{32}$/) {
5727: my $execdir=$perlvar{'lonBalanceDir'};
5728: if (-e "$execdir/$cookie.id") {
5729: my $doupdate;
5730: if (open(my $fh,'<',"$execdir/$cookie.id")) {
5731: while (my $line = <$fh>) {
5732: chomp($line);
5733: if ($line eq $lastentry) {
5734: $doupdate = 1;
5735: last;
5736: }
5737: }
5738: close($fh);
5739: }
5740: if ($doupdate) {
5741: if (open(my $fh,'>',"$execdir/$cookie.id")) {
5742: print $fh $clientname;
5743: close($fh);
5744: $updatedone = 1;
5745: }
5746: }
5747: }
5748: }
5749: if ($updatedone) {
5750: &Reply($client, "ok\n", $userinput);
5751: } else {
5752: &Failure( $client, "error: ".($!+0)."file update failed ".
5753: "while attempting updatebalcookie\n", $userinput);
5754: }
5755: return 1;
5756: }
5757: ®ister_handler("updatebalcookie", \&update_balcookie_handler, 0, 1, 0);
5758:
5759: #
1.551 raeburn 5760: # Process the delbalcookie command. This command deletes a balancer
1.564 raeburn 5761: # cookie in the lonBalancedir directory on a load balancer node.
1.551 raeburn 5762: #
5763: # Parameters:
5764: # $cmd - Command that got us here.
5765: # $cookie - Cookie to be deleted.
5766: # $client - socket open on the client process.
5767: #
5768: # Returns:
5769: # 1 - Indicating processing should continue.
5770: # Side Effects:
5771: # A cookie file is deleted from the lonBalancedir directory
5772: # A reply is sent to the client.
5773: sub del_balcookie_handler {
5774: my ($cmd, $cookie, $client) = @_;
5775:
5776: my $userinput= "$cmd:$cookie";
5777:
5778: chomp($cookie);
1.564 raeburn 5779: $cookie = &unescape($cookie);
1.551 raeburn 5780: my $deleted = '';
5781: if ($cookie =~ /^$LONCAPA::match_domain\_$LONCAPA::match_username\_[a-f0-9]{32}$/) {
5782: my $execdir=$perlvar{'lonBalanceDir'};
5783: if (-e "$execdir/$cookie.id") {
5784: if (open(my $fh,'<',"$execdir/$cookie.id")) {
5785: my $dodelete;
5786: while (my $line = <$fh>) {
5787: chomp($line);
5788: if ($line eq $clientname) {
5789: $dodelete = 1;
1.554 raeburn 5790: last;
1.551 raeburn 5791: }
5792: }
1.554 raeburn 5793: close($fh);
1.551 raeburn 5794: if ($dodelete) {
5795: if (unlink("$execdir/$cookie.id")) {
5796: $deleted = 1;
5797: }
5798: }
5799: }
5800: }
5801: }
5802: if ($deleted) {
5803: &Reply($client, "ok\n", $userinput);
5804: } else {
5805: &Failure( $client, "error: ".($!+0)."Unlinking cookie file Failed ".
5806: "while attempting delbalcookie\n", $userinput);
5807: }
5808: return 1;
5809: }
5810: ®ister_handler("delbalcookie", \&del_balcookie_handler, 0, 1, 0);
5811:
5812: #
1.246 foxr 5813: # Processes the setannounce command. This command
5814: # creates a file named announce.txt in the top directory of
5815: # the documentn root and sets its contents. The announce.txt file is
5816: # printed in its entirety at the LonCAPA login page. Note:
5817: # once the announcement.txt fileis created it cannot be deleted.
5818: # However, setting the contents of the file to empty removes the
5819: # announcement from the login page of loncapa so who cares.
5820: #
5821: # Parameters:
5822: # $cmd - The command that got us dispatched.
5823: # $announcement - The text of the announcement.
5824: # $client - Socket open on the client process.
5825: # Retunrns:
5826: # 1 - Indicating request processing should continue
5827: # Side Effects:
5828: # The file {DocRoot}/announcement.txt is created.
5829: # A reply is sent to $client.
5830: #
5831: sub set_announce_handler {
5832: my ($cmd, $announcement, $client) = @_;
5833:
5834: my $userinput = "$cmd:$announcement";
5835:
5836: chomp($announcement);
5837: $announcement=&unescape($announcement);
5838: if (my $store=IO::File->new('>'.$perlvar{'lonDocRoot'}.
5839: '/announcement.txt')) {
5840: print $store $announcement;
5841: close $store;
5842: &Reply($client, "ok\n", $userinput);
5843: } else {
5844: &Failure($client, "error: ".($!+0)."\n", $userinput);
5845: }
5846:
5847: return 1;
5848: }
5849: ®ister_handler("setannounce", \&set_announce_handler, 0, 1, 0);
1.263 albertel 5850:
1.246 foxr 5851: #
5852: # Return the version of the daemon. This can be used to determine
5853: # the compatibility of cross version installations or, alternatively to
5854: # simply know who's out of date and who isn't. Note that the version
5855: # is returned concatenated with the tail.
5856: # Parameters:
5857: # $cmd - the request that dispatched to us.
5858: # $tail - Tail of the request (client's version?).
5859: # $client - Socket open on the client.
5860: #Returns:
5861: # 1 - continue processing requests.
5862: # Side Effects:
5863: # Replies with version to $client.
5864: sub get_version_handler {
5865: my ($cmd, $tail, $client) = @_;
5866:
5867: my $userinput = $cmd.$tail;
5868:
5869: &Reply($client, &version($userinput)."\n", $userinput);
5870:
5871:
5872: return 1;
5873: }
5874: ®ister_handler("version", \&get_version_handler, 0, 1, 0);
1.263 albertel 5875:
1.246 foxr 5876: # Set the current host and domain. This is used to support
5877: # multihomed systems. Each IP of the system, or even separate daemons
5878: # on the same IP can be treated as handling a separate lonCAPA virtual
5879: # machine. This command selects the virtual lonCAPA. The client always
5880: # knows the right one since it is lonc and it is selecting the domain/system
5881: # from the hosts.tab file.
5882: # Parameters:
5883: # $cmd - Command that dispatched us.
5884: # $tail - Tail of the command (domain/host requested).
5885: # $socket - Socket open on the client.
5886: #
5887: # Returns:
5888: # 1 - Indicates the program should continue to process requests.
5889: # Side-effects:
5890: # The default domain/system context is modified for this daemon.
5891: # a reply is sent to the client.
5892: #
5893: sub set_virtual_host_handler {
5894: my ($cmd, $tail, $socket) = @_;
5895:
5896: my $userinput ="$cmd:$tail";
5897:
5898: &Reply($client, &sethost($userinput)."\n", $userinput);
5899:
5900:
5901: return 1;
5902: }
1.247 albertel 5903: ®ister_handler("sethost", \&set_virtual_host_handler, 0, 1, 0);
1.246 foxr 5904:
5905: # Process a request to exit:
5906: # - "bye" is sent to the client.
5907: # - The client socket is shutdown and closed.
5908: # - We indicate to the caller that we should exit.
5909: # Formal Parameters:
5910: # $cmd - The command that got us here.
5911: # $tail - Tail of the command (empty).
5912: # $client - Socket open on the tail.
5913: # Returns:
5914: # 0 - Indicating the program should exit!!
5915: #
5916: sub exit_handler {
5917: my ($cmd, $tail, $client) = @_;
5918:
5919: my $userinput = "$cmd:$tail";
5920:
5921: &logthis("Client $clientip ($clientname) hanging up: $userinput");
5922: &Reply($client, "bye\n", $userinput);
5923: $client->shutdown(2); # shutdown the socket forcibly.
5924: $client->close();
5925:
5926: return 0;
5927: }
1.248 foxr 5928: ®ister_handler("exit", \&exit_handler, 0,1,1);
5929: ®ister_handler("init", \&exit_handler, 0,1,1);
5930: ®ister_handler("quit", \&exit_handler, 0,1,1);
5931:
5932: # Determine if auto-enrollment is enabled.
5933: # Note that the original had what I believe to be a defect.
5934: # The original returned 0 if the requestor was not a registerd client.
5935: # It should return "refused".
5936: # Formal Parameters:
5937: # $cmd - The command that invoked us.
5938: # $tail - The tail of the command (Extra command parameters.
5939: # $client - The socket open on the client that issued the request.
5940: # Returns:
5941: # 1 - Indicating processing should continue.
5942: #
5943: sub enrollment_enabled_handler {
5944: my ($cmd, $tail, $client) = @_;
5945: my $userinput = $cmd.":".$tail; # For logging purposes.
5946:
5947:
1.337 albertel 5948: my ($cdom) = split(/:/, $tail, 2); # Domain we're asking about.
5949:
1.248 foxr 5950: my $outcome = &localenroll::run($cdom);
1.387 albertel 5951: &Reply($client, \$outcome, $userinput);
1.248 foxr 5952:
5953: return 1;
5954: }
5955: ®ister_handler("autorun", \&enrollment_enabled_handler, 0, 1, 0);
5956:
1.417 raeburn 5957: #
1.423 raeburn 5958: # Validate an institutional code used for a LON-CAPA course.
1.417 raeburn 5959: #
5960: # Formal Parameters:
5961: # $cmd - The command request that got us dispatched.
5962: # $tail - The tail of the command. In this case,
5963: # this is a colon separated set of words that will be split
5964: # into:
1.424 raeburn 5965: # $dom - The domain for which the check of
5966: # institutional course code will occur.
5967: #
5968: # $instcode - The institutional code for the course
5969: # being requested, or validated for rights
5970: # to request.
5971: #
5972: # $owner - The course requestor (who will be the
5973: # course owner, in the form username:domain
5974: #
1.417 raeburn 5975: # $client - Socket open on the client.
5976: # Returns:
5977: # 1 - Indicating processing should continue.
5978: #
5979: sub validate_instcode_handler {
5980: my ($cmd, $tail, $client) = @_;
5981: my $userinput = "$cmd:$tail";
1.423 raeburn 5982: my ($dom,$instcode,$owner) = split(/:/, $tail);
1.422 raeburn 5983: $instcode = &unescape($instcode);
5984: $owner = &unescape($owner);
1.498 raeburn 5985: my ($outcome,$description,$credits) =
1.426 raeburn 5986: &localenroll::validate_instcode($dom,$instcode,$owner);
1.498 raeburn 5987: my $result = &escape($outcome).'&'.&escape($description).'&'.
5988: &escape($credits);
1.426 raeburn 5989: &Reply($client, \$result, $userinput);
1.417 raeburn 5990:
5991: return 1;
5992: }
5993: ®ister_handler("autovalidateinstcode", \&validate_instcode_handler, 0, 1, 0);
5994:
1.566 raeburn 5995: #
5996: # Validate co-owner for cross-listed institutional code and
5997: # institutional course code itself used for a LON-CAPA course.
5998: #
5999: # Formal Parameters:
6000: # $cmd - The command request that got us dispatched.
6001: # $tail - The tail of the command. In this case,
6002: # this is a colon separated string containing:
6003: # $dom - Course's LON-CAPA domain
6004: # $instcode - Institutional course code for the course
6005: # $inst_xlist - Institutional course Id for the crosslisting
6006: # $coowner - Username of co-owner
6007: # (values for all but $dom have been escaped).
6008: #
6009: # $client - Socket open on the client.
6010: # Returns:
6011: # 1 - Indicating processing should continue.
6012: #
6013: sub validate_instcrosslist_handler {
6014: my ($cmd, $tail, $client) = @_;
6015: my $userinput = "$cmd:$tail";
6016: my ($dom,$instcode,$inst_xlist,$coowner) = split(/:/,$tail);
6017: $instcode = &unescape($instcode);
6018: $inst_xlist = &unescape($inst_xlist);
6019: $coowner = &unescape($coowner);
6020: my $outcome = &localenroll::validate_crosslist_access($dom,$instcode,
6021: $inst_xlist,$coowner);
6022: &Reply($client, \$outcome, $userinput);
6023:
6024: return 1;
6025: }
6026: ®ister_handler("autovalidateinstcrosslist", \&validate_instcrosslist_handler, 0, 1, 0);
6027:
1.248 foxr 6028: # Get the official sections for which auto-enrollment is possible.
6029: # Since the admin people won't know about 'unofficial sections'
6030: # we cannot auto-enroll on them.
6031: # Formal Parameters:
6032: # $cmd - The command request that got us dispatched here.
6033: # $tail - The remainder of the request. In our case this
6034: # will be split into:
6035: # $coursecode - The course name from the admin point of view.
6036: # $cdom - The course's domain(?).
6037: # $client - Socket open on the client.
6038: # Returns:
6039: # 1 - Indiciting processing should continue.
6040: #
6041: sub get_sections_handler {
6042: my ($cmd, $tail, $client) = @_;
6043: my $userinput = "$cmd:$tail";
6044:
6045: my ($coursecode, $cdom) = split(/:/, $tail);
6046: my @secs = &localenroll::get_sections($coursecode,$cdom);
6047: my $seclist = &escape(join(':',@secs));
6048:
1.387 albertel 6049: &Reply($client, \$seclist, $userinput);
1.248 foxr 6050:
6051:
6052: return 1;
6053: }
6054: ®ister_handler("autogetsections", \&get_sections_handler, 0, 1, 0);
6055:
6056: # Validate the owner of a new course section.
6057: #
6058: # Formal Parameters:
6059: # $cmd - Command that got us dispatched.
6060: # $tail - the remainder of the command. For us this consists of a
6061: # colon separated string containing:
6062: # $inst - Course Id from the institutions point of view.
6063: # $owner - Proposed owner of the course.
6064: # $cdom - Domain of the course (from the institutions
6065: # point of view?)..
6066: # $client - Socket open on the client.
6067: #
6068: # Returns:
6069: # 1 - Processing should continue.
6070: #
6071: sub validate_course_owner_handler {
6072: my ($cmd, $tail, $client) = @_;
6073: my $userinput = "$cmd:$tail";
1.470 raeburn 6074: my ($inst_course_id, $owner, $cdom, $coowners) = split(/:/, $tail);
6075:
1.336 raeburn 6076: $owner = &unescape($owner);
1.470 raeburn 6077: $coowners = &unescape($coowners);
6078: my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom,$coowners);
1.387 albertel 6079: &Reply($client, \$outcome, $userinput);
1.248 foxr 6080:
6081:
6082:
6083: return 1;
6084: }
6085: ®ister_handler("autonewcourse", \&validate_course_owner_handler, 0, 1, 0);
1.263 albertel 6086:
1.248 foxr 6087: #
6088: # Validate a course section in the official schedule of classes
6089: # from the institutions point of view (part of autoenrollment).
6090: #
6091: # Formal Parameters:
6092: # $cmd - The command request that got us dispatched.
6093: # $tail - The tail of the command. In this case,
6094: # this is a colon separated set of words that will be split
6095: # into:
6096: # $inst_course_id - The course/section id from the
6097: # institutions point of view.
6098: # $cdom - The domain from the institutions
6099: # point of view.
6100: # $client - Socket open on the client.
6101: # Returns:
6102: # 1 - Indicating processing should continue.
6103: #
6104: sub validate_course_section_handler {
6105: my ($cmd, $tail, $client) = @_;
6106: my $userinput = "$cmd:$tail";
6107: my ($inst_course_id, $cdom) = split(/:/, $tail);
6108:
6109: my $outcome=&localenroll::validate_courseID($inst_course_id,$cdom);
1.387 albertel 6110: &Reply($client, \$outcome, $userinput);
1.248 foxr 6111:
6112:
6113: return 1;
6114: }
6115: ®ister_handler("autovalidatecourse", \&validate_course_section_handler, 0, 1, 0);
6116:
6117: #
1.340 raeburn 6118: # Validate course owner's access to enrollment data for specific class section.
6119: #
6120: #
6121: # Formal Parameters:
6122: # $cmd - The command request that got us dispatched.
6123: # $tail - The tail of the command. In this case this is a colon separated
1.542 raeburn 6124: # set of values that will be split into:
1.340 raeburn 6125: # $inst_class - Institutional code for the specific class section
1.542 raeburn 6126: # $ownerlist - An escaped comma-separated list of username:domain
6127: # of the course owner, and co-owner(s).
1.340 raeburn 6128: # $cdom - The domain of the course from the institution's
6129: # point of view.
6130: # $client - The socket open on the client.
6131: # Returns:
6132: # 1 - continue processing.
6133: #
6134:
6135: sub validate_class_access_handler {
6136: my ($cmd, $tail, $client) = @_;
6137: my $userinput = "$cmd:$tail";
1.383 raeburn 6138: my ($inst_class,$ownerlist,$cdom) = split(/:/, $tail);
1.392 raeburn 6139: my $owners = &unescape($ownerlist);
1.341 albertel 6140: my $outcome;
6141: eval {
6142: local($SIG{__DIE__})='DEFAULT';
1.392 raeburn 6143: $outcome=&localenroll::check_section($inst_class,$owners,$cdom);
1.341 albertel 6144: };
1.387 albertel 6145: &Reply($client,\$outcome, $userinput);
1.340 raeburn 6146:
6147: return 1;
6148: }
6149: ®ister_handler("autovalidateclass_sec", \&validate_class_access_handler, 0, 1, 0);
6150:
6151: #
1.567 raeburn 6152: # Modify institutional sections (using customized &instsec_reformat()
6153: # routine in localenroll.pm), to either clutter or declutter, for
6154: # purposes of ensuring an institutional course section (string) can
6155: # be unambiguously separated into institutional course and section.
6156: #
6157: # Formal Parameters:
6158: # $cmd - The command request that got us dispatched.
6159: # $tail - The tail of the command. In this case this is a colon separated
6160: # set of values that will be split into:
6161: # $cdom - The LON-CAPA domain of the course.
6162: # $action - Either: clutter or declutter
6163: # clutter adds character(s) to eliminate ambiguity
6164: # declutter removes the added characters (e.g., for
6165: # display of the institutional course section string.
6166: # $info - A frozen hash in which keys are:
6167: # LON-CAPA course number:Institutional course code
6168: # and values are a reference to an array of the
6169: # items to modify -- either institutional sections,
6170: # or institutional course sections (for crosslistings).
6171: # $client - The socket open on the client.
6172: # Returns:
6173: # 1 - continue processing.
6174: #
6175:
6176: sub instsec_reformat_handler {
6177: my ($cmd, $tail, $client) = @_;
6178: my $userinput = "$cmd:$tail";
6179: my ($cdom,$action,$info) = split(/:/,$tail);
6180: my $instsecref = &Apache::lonnet::thaw_unescape($info);
6181: my ($outcome,$result);
6182: eval {
6183: local($SIG{__DIE__})='DEFAULT';
6184: $outcome=&localenroll::instsec_reformat($cdom,$action,$instsecref);
6185: if ($outcome eq 'ok') {
6186: if (ref($instsecref) eq 'HASH') {
6187: foreach my $key (keys(%{$instsecref})) {
6188: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($instsecref->{$key}).'&';
6189: }
6190: $result =~ s/\&$//;
6191: }
6192: }
6193: };
6194: if (!$@) {
6195: if ($outcome eq 'ok') {
6196: &Reply( $client, \$result, $userinput);
6197: } else {
6198: &Reply($client,\$outcome, $userinput);
6199: }
6200: } else {
6201: &Failure($client,"unknown_cmd\n",$userinput);
6202: }
6203: return 1;
6204: }
6205: ®ister_handler("autoinstsecreformat",\&instsec_reformat_handler, 0, 1, 0);
6206:
6207: #
1.542 raeburn 6208: # Validate course owner or co-owners(s) access to enrollment data for all sections
6209: # and crosslistings for a particular course.
6210: #
6211: #
6212: # Formal Parameters:
6213: # $cmd - The command request that got us dispatched.
6214: # $tail - The tail of the command. In this case this is a colon separated
6215: # set of values that will be split into:
6216: # $ownerlist - An escaped comma-separated list of username:domain
6217: # of the course owner, and co-owner(s).
6218: # $cdom - The domain of the course from the institution's
6219: # point of view.
6220: # $classes - Frozen hash of institutional course sections and
6221: # crosslistings.
6222: # $client - The socket open on the client.
6223: # Returns:
6224: # 1 - continue processing.
6225: #
6226:
6227: sub validate_classes_handler {
6228: my ($cmd, $tail, $client) = @_;
6229: my $userinput = "$cmd:$tail";
6230: my ($ownerlist,$cdom,$classes) = split(/:/, $tail);
6231: my $classesref = &Apache::lonnet::thaw_unescape($classes);
6232: my $owners = &unescape($ownerlist);
6233: my $result;
6234: eval {
6235: local($SIG{__DIE__})='DEFAULT';
6236: my %validations;
6237: my $response = &localenroll::check_instclasses($owners,$cdom,$classesref,
6238: \%validations);
6239: if ($response eq 'ok') {
6240: foreach my $key (keys(%validations)) {
6241: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
6242: }
6243: $result =~ s/\&$//;
6244: } else {
6245: $result = 'error';
6246: }
6247: };
6248: if (!$@) {
6249: &Reply($client, \$result, $userinput);
6250: } else {
6251: &Failure($client,"unknown_cmd\n",$userinput);
6252: }
6253: return 1;
6254: }
6255: ®ister_handler("autovalidateinstclasses", \&validate_classes_handler, 0, 1, 0);
6256:
6257: #
1.340 raeburn 6258: # Create a password for a new LON-CAPA user added by auto-enrollment.
6259: # Only used for case where authentication method for new user is localauth
1.248 foxr 6260: #
6261: # Formal Parameters:
6262: # $cmd - The command request that got us dispatched.
6263: # $tail - The tail of the command. In this case this is a colon separated
6264: # set of words that will be split into:
1.340 raeburn 6265: # $authparam - An authentication parameter (localauth parameter).
1.248 foxr 6266: # $cdom - The domain of the course from the institution's
6267: # point of view.
6268: # $client - The socket open on the client.
6269: # Returns:
6270: # 1 - continue processing.
6271: #
6272: sub create_auto_enroll_password_handler {
6273: my ($cmd, $tail, $client) = @_;
6274: my $userinput = "$cmd:$tail";
6275:
6276: my ($authparam, $cdom) = split(/:/, $userinput);
6277:
6278: my ($create_passwd,$authchk);
6279: ($authparam,
6280: $create_passwd,
6281: $authchk) = &localenroll::create_password($authparam,$cdom);
6282:
6283: &Reply($client, &escape($authparam.':'.$create_passwd.':'.$authchk)."\n",
6284: $userinput);
6285:
6286:
6287: return 1;
6288: }
6289: ®ister_handler("autocreatepassword", \&create_auto_enroll_password_handler,
6290: 0, 1, 0);
6291:
1.522 raeburn 6292: sub auto_export_grades_handler {
6293: my ($cmd, $tail, $client) = @_;
6294: my $userinput = "$cmd:$tail";
6295: my ($cdom,$cnum,$info,$data) = split(/:/,$tail);
6296: my $inforef = &Apache::lonnet::thaw_unescape($info);
6297: my $dataref = &Apache::lonnet::thaw_unescape($data);
6298: my ($outcome,$result);;
6299: eval {
6300: local($SIG{__DIE__})='DEFAULT';
6301: my %rtnhash;
6302: $outcome=&localenroll::export_grades($cdom,$cnum,$inforef,$dataref,\%rtnhash);
6303: if ($outcome eq 'ok') {
6304: foreach my $key (keys(%rtnhash)) {
6305: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&';
6306: }
6307: $result =~ s/\&$//;
6308: }
6309: };
6310: if (!$@) {
6311: if ($outcome eq 'ok') {
6312: if ($cipher) {
6313: my $cmdlength=length($result);
6314: $result.=" ";
6315: my $encresult='';
6316: for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
6317: $encresult.= unpack("H16",
6318: $cipher->encrypt(substr($result,
6319: $encidx,
6320: 8)));
6321: }
6322: &Reply( $client, "enc:$cmdlength:$encresult\n", $userinput);
6323: } else {
6324: &Failure( $client, "error:no_key\n", $userinput);
6325: }
6326: } else {
6327: &Reply($client, "$outcome\n", $userinput);
6328: }
6329: } else {
6330: &Failure($client,"export_error\n",$userinput);
6331: }
6332: return 1;
6333: }
6334: ®ister_handler("autoexportgrades", \&auto_export_grades_handler,
1.536 raeburn 6335: 1, 1, 0);
1.522 raeburn 6336:
1.248 foxr 6337: # Retrieve and remove temporary files created by/during autoenrollment.
6338: #
6339: # Formal Parameters:
6340: # $cmd - The command that got us dispatched.
6341: # $tail - The tail of the command. In our case this is a colon
6342: # separated list that will be split into:
1.526 raeburn 6343: # $filename - The name of the file to retrieve.
1.248 foxr 6344: # The filename is given as a path relative to
6345: # the LonCAPA temp file directory.
6346: # $client - Socket open on the client.
6347: #
6348: # Returns:
6349: # 1 - Continue processing.
6350: sub retrieve_auto_file_handler {
6351: my ($cmd, $tail, $client) = @_;
6352: my $userinput = "cmd:$tail";
6353:
6354: my ($filename) = split(/:/, $tail);
6355:
6356: my $source = $perlvar{'lonDaemons'}.'/tmp/'.$filename;
1.521 raeburn 6357:
6358: if ($filename =~m{/\.\./}) {
6359: &Failure($client, "refused\n", $userinput);
1.526 raeburn 6360: } elsif ($filename !~ /^$LONCAPA::match_domain\_$LONCAPA::match_courseid\_.+_classlist\.xml$/) {
6361: &Failure($client, "refused\n", $userinput);
1.521 raeburn 6362: } elsif ( (-e $source) && ($filename ne '') ) {
1.248 foxr 6363: my $reply = '';
6364: if (open(my $fh,$source)) {
6365: while (<$fh>) {
6366: chomp($_);
6367: $_ =~ s/^\s+//g;
6368: $_ =~ s/\s+$//g;
6369: $reply .= $_;
6370: }
6371: close($fh);
6372: &Reply($client, &escape($reply)."\n", $userinput);
6373:
6374: # Does this have to be uncommented??!? (RF).
6375: #
6376: # unlink($source);
6377: } else {
6378: &Failure($client, "error\n", $userinput);
6379: }
6380: } else {
6381: &Failure($client, "error\n", $userinput);
6382: }
6383:
6384:
6385: return 1;
6386: }
6387: ®ister_handler("autoretrieve", \&retrieve_auto_file_handler, 0,1,0);
6388:
1.423 raeburn 6389: sub crsreq_checks_handler {
6390: my ($cmd, $tail, $client) = @_;
6391: my $userinput = "$cmd:$tail";
6392: my $dom = $tail;
6393: my $result;
1.519 raeburn 6394: my @reqtypes = ('official','unofficial','community','textbook','placement');
1.423 raeburn 6395: eval {
6396: local($SIG{__DIE__})='DEFAULT';
6397: my %validations;
1.424 raeburn 6398: my $response = &localenroll::crsreq_checks($dom,\@reqtypes,
6399: \%validations);
1.423 raeburn 6400: if ($response eq 'ok') {
6401: foreach my $key (keys(%validations)) {
6402: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
6403: }
6404: $result =~ s/\&$//;
6405: } else {
6406: $result = 'error';
6407: }
6408: };
6409: if (!$@) {
6410: &Reply($client, \$result, $userinput);
6411: } else {
6412: &Failure($client,"unknown_cmd\n",$userinput);
6413: }
6414: return 1;
6415: }
6416: ®ister_handler("autocrsreqchecks", \&crsreq_checks_handler, 0, 1, 0);
6417:
6418: sub validate_crsreq_handler {
6419: my ($cmd, $tail, $client) = @_;
6420: my $userinput = "$cmd:$tail";
1.508 raeburn 6421: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$customdata) = split(/:/, $tail);
1.423 raeburn 6422: $instcode = &unescape($instcode);
6423: $owner = &unescape($owner);
6424: $crstype = &unescape($crstype);
6425: $inststatuslist = &unescape($inststatuslist);
6426: $instcode = &unescape($instcode);
6427: $instseclist = &unescape($instseclist);
1.508 raeburn 6428: my $custominfo = &Apache::lonnet::thaw_unescape($customdata);
1.423 raeburn 6429: my $outcome;
6430: eval {
6431: local($SIG{__DIE__})='DEFAULT';
6432: $outcome = &localenroll::validate_crsreq($dom,$owner,$crstype,
6433: $inststatuslist,$instcode,
1.508 raeburn 6434: $instseclist,$custominfo);
1.423 raeburn 6435: };
6436: if (!$@) {
6437: &Reply($client, \$outcome, $userinput);
6438: } else {
6439: &Failure($client,"unknown_cmd\n",$userinput);
6440: }
6441: return 1;
6442: }
6443: ®ister_handler("autocrsreqvalidation", \&validate_crsreq_handler, 0, 1, 0);
6444:
1.506 raeburn 6445: sub crsreq_update_handler {
6446: my ($cmd, $tail, $client) = @_;
6447: my $userinput = "$cmd:$tail";
1.509 raeburn 6448: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,$code,
6449: $accessstart,$accessend,$infohashref) =
1.506 raeburn 6450: split(/:/, $tail);
6451: $crstype = &unescape($crstype);
6452: $action = &unescape($action);
6453: $ownername = &unescape($ownername);
6454: $ownerdomain = &unescape($ownerdomain);
6455: $fullname = &unescape($fullname);
6456: $title = &unescape($title);
6457: $code = &unescape($code);
1.509 raeburn 6458: $accessstart = &unescape($accessstart);
6459: $accessend = &unescape($accessend);
1.506 raeburn 6460: my $incoming = &Apache::lonnet::thaw_unescape($infohashref);
6461: my ($result,$outcome);
6462: eval {
6463: local($SIG{__DIE__})='DEFAULT';
6464: my %rtnhash;
6465: $outcome = &localenroll::crsreq_updates($cdom,$cnum,$crstype,$action,
6466: $ownername,$ownerdomain,$fullname,
1.509 raeburn 6467: $title,$code,$accessstart,$accessend,
6468: $incoming,\%rtnhash);
1.506 raeburn 6469: if ($outcome eq 'ok') {
1.515 raeburn 6470: my @posskeys = qw(createdweb createdmsg createdcustomized createdactions queuedweb queuedmsg formitems reviewweb validationjs onload javascript);
1.506 raeburn 6471: foreach my $key (keys(%rtnhash)) {
6472: if (grep(/^\Q$key\E/,@posskeys)) {
6473: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&';
6474: }
6475: }
6476: $result =~ s/\&$//;
6477: }
6478: };
6479: if (!$@) {
6480: if ($outcome eq 'ok') {
6481: &Reply($client, \$result, $userinput);
6482: } else {
6483: &Reply($client, "format_error\n", $userinput);
6484: }
6485: } else {
6486: &Failure($client,"unknown_cmd\n",$userinput);
6487: }
6488: return 1;
6489: }
6490: ®ister_handler("autocrsrequpdate", \&crsreq_update_handler, 0, 1, 0);
6491:
1.248 foxr 6492: #
6493: # Read and retrieve institutional code format (for support form).
6494: # Formal Parameters:
6495: # $cmd - Command that dispatched us.
6496: # $tail - Tail of the command. In this case it conatins
6497: # the course domain and the coursename.
6498: # $client - Socket open on the client.
6499: # Returns:
6500: # 1 - Continue processing.
6501: #
6502: sub get_institutional_code_format_handler {
6503: my ($cmd, $tail, $client) = @_;
6504: my $userinput = "$cmd:$tail";
6505:
6506: my $reply;
6507: my($cdom,$course) = split(/:/,$tail);
6508: my @pairs = split/\&/,$course;
6509: my %instcodes = ();
6510: my %codes = ();
6511: my @codetitles = ();
6512: my %cat_titles = ();
6513: my %cat_order = ();
6514: foreach (@pairs) {
6515: my ($key,$value) = split/=/,$_;
6516: $instcodes{&unescape($key)} = &unescape($value);
6517: }
6518: my $formatreply = &localenroll::instcode_format($cdom,
6519: \%instcodes,
6520: \%codes,
6521: \@codetitles,
6522: \%cat_titles,
6523: \%cat_order);
6524: if ($formatreply eq 'ok') {
1.365 albertel 6525: my $codes_str = &Apache::lonnet::hash2str(%codes);
6526: my $codetitles_str = &Apache::lonnet::array2str(@codetitles);
6527: my $cat_titles_str = &Apache::lonnet::hash2str(%cat_titles);
6528: my $cat_order_str = &Apache::lonnet::hash2str(%cat_order);
1.248 foxr 6529: &Reply($client,
6530: $codes_str.':'.$codetitles_str.':'.$cat_titles_str.':'
6531: .$cat_order_str."\n",
6532: $userinput);
6533: } else {
6534: # this else branch added by RF since if not ok, lonc will
6535: # hang waiting on reply until timeout.
6536: #
6537: &Reply($client, "format_error\n", $userinput);
6538: }
6539:
6540: return 1;
6541: }
1.265 albertel 6542: ®ister_handler("autoinstcodeformat",
6543: \&get_institutional_code_format_handler,0,1,0);
1.246 foxr 6544:
1.345 raeburn 6545: sub get_institutional_defaults_handler {
6546: my ($cmd, $tail, $client) = @_;
6547: my $userinput = "$cmd:$tail";
6548:
6549: my $dom = $tail;
6550: my %defaults_hash;
6551: my @code_order;
6552: my $outcome;
6553: eval {
6554: local($SIG{__DIE__})='DEFAULT';
6555: $outcome = &localenroll::instcode_defaults($dom,\%defaults_hash,
6556: \@code_order);
6557: };
6558: if (!$@) {
6559: if ($outcome eq 'ok') {
6560: my $result='';
6561: while (my ($key,$value) = each(%defaults_hash)) {
6562: $result.=&escape($key).'='.&escape($value).'&';
6563: }
6564: $result .= 'code_order='.&escape(join('&',@code_order));
1.387 albertel 6565: &Reply($client,\$result,$userinput);
1.345 raeburn 6566: } else {
6567: &Reply($client,"error\n", $userinput);
6568: }
6569: } else {
6570: &Failure($client,"unknown_cmd\n",$userinput);
6571: }
6572: }
6573: ®ister_handler("autoinstcodedefaults",
6574: \&get_institutional_defaults_handler,0,1,0);
6575:
1.416 raeburn 6576: sub get_possible_instcodes_handler {
6577: my ($cmd, $tail, $client) = @_;
6578: my $userinput = "$cmd:$tail";
6579:
6580: my $reply;
6581: my $cdom = $tail;
1.417 raeburn 6582: my (@codetitles,%cat_titles,%cat_order,@code_order);
1.416 raeburn 6583: my $formatreply = &localenroll::possible_instcodes($cdom,
6584: \@codetitles,
6585: \%cat_titles,
1.417 raeburn 6586: \%cat_order,
6587: \@code_order);
1.416 raeburn 6588: if ($formatreply eq 'ok') {
6589: my $result = join('&',map {&escape($_);} (@codetitles)).':';
1.417 raeburn 6590: $result .= join('&',map {&escape($_);} (@code_order)).':';
1.416 raeburn 6591: foreach my $key (keys(%cat_titles)) {
6592: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_titles{$key}).'&';
6593: }
6594: $result =~ s/\&$//;
6595: $result .= ':';
6596: foreach my $key (keys(%cat_order)) {
6597: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_order{$key}).'&';
6598: }
6599: $result =~ s/\&$//;
6600: &Reply($client,\$result,$userinput);
6601: } else {
6602: &Reply($client, "format_error\n", $userinput);
6603: }
6604: return 1;
6605: }
6606: ®ister_handler("autopossibleinstcodes",
6607: \&get_possible_instcodes_handler,0,1,0);
6608:
1.381 raeburn 6609: sub get_institutional_user_rules {
6610: my ($cmd, $tail, $client) = @_;
6611: my $userinput = "$cmd:$tail";
6612: my $dom = &unescape($tail);
6613: my (%rules_hash,@rules_order);
6614: my $outcome;
6615: eval {
6616: local($SIG{__DIE__})='DEFAULT';
6617: $outcome = &localenroll::username_rules($dom,\%rules_hash,\@rules_order);
6618: };
6619: if (!$@) {
6620: if ($outcome eq 'ok') {
6621: my $result;
6622: foreach my $key (keys(%rules_hash)) {
6623: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6624: }
6625: $result =~ s/\&$//;
6626: $result .= ':';
6627: if (@rules_order > 0) {
6628: foreach my $item (@rules_order) {
6629: $result .= &escape($item).'&';
6630: }
6631: }
6632: $result =~ s/\&$//;
1.387 albertel 6633: &Reply($client,\$result,$userinput);
1.381 raeburn 6634: } else {
6635: &Reply($client,"error\n", $userinput);
6636: }
6637: } else {
6638: &Failure($client,"unknown_cmd\n",$userinput);
6639: }
6640: }
6641: ®ister_handler("instuserrules",\&get_institutional_user_rules,0,1,0);
6642:
1.389 raeburn 6643: sub get_institutional_id_rules {
6644: my ($cmd, $tail, $client) = @_;
6645: my $userinput = "$cmd:$tail";
6646: my $dom = &unescape($tail);
6647: my (%rules_hash,@rules_order);
6648: my $outcome;
6649: eval {
6650: local($SIG{__DIE__})='DEFAULT';
6651: $outcome = &localenroll::id_rules($dom,\%rules_hash,\@rules_order);
6652: };
6653: if (!$@) {
6654: if ($outcome eq 'ok') {
6655: my $result;
6656: foreach my $key (keys(%rules_hash)) {
6657: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6658: }
6659: $result =~ s/\&$//;
6660: $result .= ':';
6661: if (@rules_order > 0) {
6662: foreach my $item (@rules_order) {
6663: $result .= &escape($item).'&';
6664: }
6665: }
6666: $result =~ s/\&$//;
6667: &Reply($client,\$result,$userinput);
6668: } else {
6669: &Reply($client,"error\n", $userinput);
6670: }
6671: } else {
6672: &Failure($client,"unknown_cmd\n",$userinput);
6673: }
6674: }
6675: ®ister_handler("instidrules",\&get_institutional_id_rules,0,1,0);
6676:
1.397 raeburn 6677: sub get_institutional_selfcreate_rules {
1.396 raeburn 6678: my ($cmd, $tail, $client) = @_;
6679: my $userinput = "$cmd:$tail";
6680: my $dom = &unescape($tail);
6681: my (%rules_hash,@rules_order);
6682: my $outcome;
6683: eval {
6684: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 6685: $outcome = &localenroll::selfcreate_rules($dom,\%rules_hash,\@rules_order);
1.396 raeburn 6686: };
6687: if (!$@) {
6688: if ($outcome eq 'ok') {
6689: my $result;
6690: foreach my $key (keys(%rules_hash)) {
6691: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6692: }
6693: $result =~ s/\&$//;
6694: $result .= ':';
6695: if (@rules_order > 0) {
6696: foreach my $item (@rules_order) {
6697: $result .= &escape($item).'&';
6698: }
6699: }
6700: $result =~ s/\&$//;
6701: &Reply($client,\$result,$userinput);
6702: } else {
6703: &Reply($client,"error\n", $userinput);
6704: }
6705: } else {
6706: &Failure($client,"unknown_cmd\n",$userinput);
6707: }
6708: }
1.397 raeburn 6709: ®ister_handler("instemailrules",\&get_institutional_selfcreate_rules,0,1,0);
1.396 raeburn 6710:
1.381 raeburn 6711:
6712: sub institutional_username_check {
6713: my ($cmd, $tail, $client) = @_;
6714: my $userinput = "$cmd:$tail";
6715: my %rulecheck;
6716: my $outcome;
6717: my ($udom,$uname,@rules) = split(/:/,$tail);
6718: $udom = &unescape($udom);
6719: $uname = &unescape($uname);
6720: @rules = map {&unescape($_);} (@rules);
6721: eval {
6722: local($SIG{__DIE__})='DEFAULT';
6723: $outcome = &localenroll::username_check($udom,$uname,\@rules,\%rulecheck);
6724: };
6725: if (!$@) {
6726: if ($outcome eq 'ok') {
6727: my $result='';
6728: foreach my $key (keys(%rulecheck)) {
6729: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6730: }
1.387 albertel 6731: &Reply($client,\$result,$userinput);
1.381 raeburn 6732: } else {
6733: &Reply($client,"error\n", $userinput);
6734: }
6735: } else {
6736: &Failure($client,"unknown_cmd\n",$userinput);
6737: }
6738: }
6739: ®ister_handler("instrulecheck",\&institutional_username_check,0,1,0);
6740:
1.389 raeburn 6741: sub institutional_id_check {
6742: my ($cmd, $tail, $client) = @_;
6743: my $userinput = "$cmd:$tail";
6744: my %rulecheck;
6745: my $outcome;
6746: my ($udom,$id,@rules) = split(/:/,$tail);
6747: $udom = &unescape($udom);
6748: $id = &unescape($id);
6749: @rules = map {&unescape($_);} (@rules);
6750: eval {
6751: local($SIG{__DIE__})='DEFAULT';
6752: $outcome = &localenroll::id_check($udom,$id,\@rules,\%rulecheck);
6753: };
6754: if (!$@) {
6755: if ($outcome eq 'ok') {
6756: my $result='';
6757: foreach my $key (keys(%rulecheck)) {
6758: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6759: }
6760: &Reply($client,\$result,$userinput);
6761: } else {
6762: &Reply($client,"error\n", $userinput);
6763: }
6764: } else {
6765: &Failure($client,"unknown_cmd\n",$userinput);
6766: }
6767: }
6768: ®ister_handler("instidrulecheck",\&institutional_id_check,0,1,0);
1.345 raeburn 6769:
1.397 raeburn 6770: sub institutional_selfcreate_check {
1.396 raeburn 6771: my ($cmd, $tail, $client) = @_;
6772: my $userinput = "$cmd:$tail";
6773: my %rulecheck;
6774: my $outcome;
6775: my ($udom,$email,@rules) = split(/:/,$tail);
6776: $udom = &unescape($udom);
6777: $email = &unescape($email);
6778: @rules = map {&unescape($_);} (@rules);
6779: eval {
6780: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 6781: $outcome = &localenroll::selfcreate_check($udom,$email,\@rules,\%rulecheck);
1.396 raeburn 6782: };
6783: if (!$@) {
6784: if ($outcome eq 'ok') {
6785: my $result='';
6786: foreach my $key (keys(%rulecheck)) {
6787: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6788: }
6789: &Reply($client,\$result,$userinput);
6790: } else {
6791: &Reply($client,"error\n", $userinput);
6792: }
6793: } else {
6794: &Failure($client,"unknown_cmd\n",$userinput);
6795: }
6796: }
1.397 raeburn 6797: ®ister_handler("instselfcreatecheck",\&institutional_selfcreate_check,0,1,0);
1.396 raeburn 6798:
1.317 raeburn 6799: # Get domain specific conditions for import of student photographs to a course
6800: #
6801: # Retrieves information from photo_permission subroutine in localenroll.
6802: # Returns outcome (ok) if no processing errors, and whether course owner is
6803: # required to accept conditions of use (yes/no).
6804: #
6805: #
6806: sub photo_permission_handler {
6807: my ($cmd, $tail, $client) = @_;
6808: my $userinput = "$cmd:$tail";
6809: my $cdom = $tail;
6810: my ($perm_reqd,$conditions);
1.320 albertel 6811: my $outcome;
6812: eval {
6813: local($SIG{__DIE__})='DEFAULT';
6814: $outcome = &localenroll::photo_permission($cdom,\$perm_reqd,
6815: \$conditions);
6816: };
6817: if (!$@) {
6818: &Reply($client, &escape($outcome.':'.$perm_reqd.':'. $conditions)."\n",
6819: $userinput);
6820: } else {
6821: &Failure($client,"unknown_cmd\n",$userinput);
6822: }
6823: return 1;
1.317 raeburn 6824: }
6825: ®ister_handler("autophotopermission",\&photo_permission_handler,0,1,0);
6826:
6827: #
6828: # Checks if student photo is available for a user in the domain, in the user's
6829: # directory (in /userfiles/internal/studentphoto.jpg).
6830: # Uses localstudentphoto:fetch() to ensure there is an up to date copy of
6831: # the student's photo.
6832:
6833: sub photo_check_handler {
6834: my ($cmd, $tail, $client) = @_;
6835: my $userinput = "$cmd:$tail";
6836: my ($udom,$uname,$pid) = split(/:/,$tail);
6837: $udom = &unescape($udom);
6838: $uname = &unescape($uname);
6839: $pid = &unescape($pid);
6840: my $path=&propath($udom,$uname).'/userfiles/internal/';
6841: if (!-e $path) {
6842: &mkpath($path);
6843: }
6844: my $response;
6845: my $result = &localstudentphoto::fetch($udom,$uname,$pid,\$response);
6846: $result .= ':'.$response;
6847: &Reply($client, &escape($result)."\n",$userinput);
1.320 albertel 6848: return 1;
1.317 raeburn 6849: }
6850: ®ister_handler("autophotocheck",\&photo_check_handler,0,1,0);
6851:
6852: #
6853: # Retrieve information from localenroll about whether to provide a button
6854: # for users who have enbled import of student photos to initiate an
6855: # update of photo files for registered students. Also include
6856: # comment to display alongside button.
6857:
6858: sub photo_choice_handler {
6859: my ($cmd, $tail, $client) = @_;
6860: my $userinput = "$cmd:$tail";
6861: my $cdom = &unescape($tail);
1.320 albertel 6862: my ($update,$comment);
6863: eval {
6864: local($SIG{__DIE__})='DEFAULT';
6865: ($update,$comment) = &localenroll::manager_photo_update($cdom);
6866: };
6867: if (!$@) {
6868: &Reply($client,&escape($update).':'.&escape($comment)."\n",$userinput);
6869: } else {
6870: &Failure($client,"unknown_cmd\n",$userinput);
6871: }
6872: return 1;
1.317 raeburn 6873: }
6874: ®ister_handler("autophotochoice",\&photo_choice_handler,0,1,0);
6875:
1.265 albertel 6876: #
6877: # Gets a student's photo to exist (in the correct image type) in the user's
6878: # directory.
6879: # Formal Parameters:
6880: # $cmd - The command request that got us dispatched.
6881: # $tail - A colon separated set of words that will be split into:
6882: # $domain - student's domain
6883: # $uname - student username
6884: # $type - image type desired
6885: # $client - The socket open on the client.
6886: # Returns:
6887: # 1 - continue processing.
1.317 raeburn 6888:
1.265 albertel 6889: sub student_photo_handler {
6890: my ($cmd, $tail, $client) = @_;
1.317 raeburn 6891: my ($domain,$uname,$ext,$type) = split(/:/, $tail);
1.265 albertel 6892:
1.317 raeburn 6893: my $path=&propath($domain,$uname). '/userfiles/internal/';
6894: my $filename = 'studentphoto.'.$ext;
6895: if ($type eq 'thumbnail') {
6896: $filename = 'studentphoto_tn.'.$ext;
6897: }
6898: if (-e $path.$filename) {
1.265 albertel 6899: &Reply($client,"ok\n","$cmd:$tail");
6900: return 1;
6901: }
6902: &mkpath($path);
1.317 raeburn 6903: my $file;
6904: if ($type eq 'thumbnail') {
1.320 albertel 6905: eval {
6906: local($SIG{__DIE__})='DEFAULT';
6907: $file=&localstudentphoto::fetch_thumbnail($domain,$uname);
6908: };
1.317 raeburn 6909: } else {
6910: $file=&localstudentphoto::fetch($domain,$uname);
6911: }
1.265 albertel 6912: if (!$file) {
6913: &Failure($client,"unavailable\n","$cmd:$tail");
6914: return 1;
6915: }
1.317 raeburn 6916: if (!-e $path.$filename) { &convert_photo($file,$path.$filename); }
6917: if (-e $path.$filename) {
1.265 albertel 6918: &Reply($client,"ok\n","$cmd:$tail");
6919: return 1;
6920: }
6921: &Failure($client,"unable_to_convert\n","$cmd:$tail");
6922: return 1;
6923: }
6924: ®ister_handler("studentphoto", \&student_photo_handler, 0, 1, 0);
1.246 foxr 6925:
1.361 raeburn 6926: sub inst_usertypes_handler {
6927: my ($cmd, $domain, $client) = @_;
6928: my $res;
6929: my $userinput = $cmd.":".$domain; # For logging purposes.
1.370 albertel 6930: my (%typeshash,@order,$result);
6931: eval {
6932: local($SIG{__DIE__})='DEFAULT';
6933: $result=&localenroll::inst_usertypes($domain,\%typeshash,\@order);
6934: };
6935: if ($result eq 'ok') {
1.361 raeburn 6936: if (keys(%typeshash) > 0) {
6937: foreach my $key (keys(%typeshash)) {
6938: $res.=&escape($key).'='.&escape($typeshash{$key}).'&';
6939: }
6940: }
6941: $res=~s/\&$//;
6942: $res .= ':';
6943: if (@order > 0) {
6944: foreach my $item (@order) {
6945: $res .= &escape($item).'&';
6946: }
6947: }
6948: $res=~s/\&$//;
6949: }
1.387 albertel 6950: &Reply($client, \$res, $userinput);
1.361 raeburn 6951: return 1;
6952: }
6953: ®ister_handler("inst_usertypes", \&inst_usertypes_handler, 0, 1, 0);
6954:
1.264 albertel 6955: # mkpath makes all directories for a file, expects an absolute path with a
6956: # file or a trailing / if just a dir is passed
6957: # returns 1 on success 0 on failure
6958: sub mkpath {
6959: my ($file)=@_;
6960: my @parts=split(/\//,$file,-1);
6961: my $now=$parts[0].'/'.$parts[1].'/'.$parts[2];
6962: for (my $i=3;$i<= ($#parts-1);$i++) {
1.265 albertel 6963: $now.='/'.$parts[$i];
1.264 albertel 6964: if (!-e $now) {
6965: if (!mkdir($now,0770)) { return 0; }
6966: }
6967: }
6968: return 1;
6969: }
6970:
1.207 foxr 6971: #---------------------------------------------------------------
6972: #
6973: # Getting, decoding and dispatching requests:
6974: #
6975: #
6976: # Get a Request:
6977: # Gets a Request message from the client. The transaction
6978: # is defined as a 'line' of text. We remove the new line
6979: # from the text line.
1.226 foxr 6980: #
1.211 albertel 6981: sub get_request {
1.207 foxr 6982: my $input = <$client>;
6983: chomp($input);
1.226 foxr 6984:
1.234 foxr 6985: &Debug("get_request: Request = $input\n");
1.207 foxr 6986:
6987: &status('Processing '.$clientname.':'.$input);
6988:
6989: return $input;
6990: }
1.212 foxr 6991: #---------------------------------------------------------------
6992: #
6993: # Process a request. This sub should shrink as each action
6994: # gets farmed out into a separat sub that is registered
6995: # with the dispatch hash.
6996: #
6997: # Parameters:
6998: # user_input - The request received from the client (lonc).
1.525 raeburn 6999: #
1.212 foxr 7000: # Returns:
7001: # true to keep processing, false if caller should exit.
7002: #
7003: sub process_request {
1.525 raeburn 7004: my ($userinput) = @_; # Easier for now to break style than to
7005: # fix all the userinput -> user_input.
1.212 foxr 7006: my $wasenc = 0; # True if request was encrypted.
7007: # ------------------------------------------------------------ See if encrypted
1.322 albertel 7008: # for command
7009: # sethost:<server>
7010: # <command>:<args>
7011: # we just send it to the processor
7012: # for
7013: # sethost:<server>:<command>:<args>
7014: # we do the implict set host and then do the command
7015: if ($userinput =~ /^sethost:/) {
7016: (my $cmd,my $newid,$userinput) = split(':',$userinput,3);
7017: if (defined($userinput)) {
7018: &sethost("$cmd:$newid");
7019: } else {
7020: $userinput = "$cmd:$newid";
7021: }
7022: }
7023:
1.212 foxr 7024: if ($userinput =~ /^enc/) {
7025: $userinput = decipher($userinput);
7026: $wasenc=1;
7027: if(!$userinput) { # Cipher not defined.
1.251 foxr 7028: &Failure($client, "error: Encrypted data without negotated key\n");
1.212 foxr 7029: return 0;
7030: }
7031: }
7032: Debug("process_request: $userinput\n");
7033:
1.213 foxr 7034: #
7035: # The 'correct way' to add a command to lond is now to
7036: # write a sub to execute it and Add it to the command dispatch
7037: # hash via a call to register_handler.. The comments to that
7038: # sub should give you enough to go on to show how to do this
7039: # along with the examples that are building up as this code
7040: # is getting refactored. Until all branches of the
7041: # if/elseif monster below have been factored out into
7042: # separate procesor subs, if the dispatch hash is missing
7043: # the command keyword, we will fall through to the remainder
7044: # of the if/else chain below in order to keep this thing in
7045: # working order throughout the transmogrification.
7046:
7047: my ($command, $tail) = split(/:/, $userinput, 2);
7048: chomp($command);
7049: chomp($tail);
7050: $tail =~ s/(\r)//; # This helps people debugging with e.g. telnet.
1.214 foxr 7051: $command =~ s/(\r)//; # And this too for parameterless commands.
7052: if(!$tail) {
7053: $tail =""; # defined but blank.
7054: }
1.213 foxr 7055:
7056: &Debug("Command received: $command, encoded = $wasenc");
7057:
7058: if(defined $Dispatcher{$command}) {
7059:
7060: my $dispatch_info = $Dispatcher{$command};
7061: my $handler = $$dispatch_info[0];
7062: my $need_encode = $$dispatch_info[1];
7063: my $client_types = $$dispatch_info[2];
7064: Debug("Matched dispatch hash: mustencode: $need_encode "
7065: ."ClientType $client_types");
7066:
7067: # Validate the request:
7068:
7069: my $ok = 1;
7070: my $requesterprivs = 0;
7071: if(&isClient()) {
7072: $requesterprivs |= $CLIENT_OK;
7073: }
7074: if(&isManager()) {
7075: $requesterprivs |= $MANAGER_OK;
7076: }
7077: if($need_encode && (!$wasenc)) {
7078: Debug("Must encode but wasn't: $need_encode $wasenc");
7079: $ok = 0;
7080: }
7081: if(($client_types & $requesterprivs) == 0) {
7082: Debug("Client not privileged to do this operation");
7083: $ok = 0;
7084: }
1.525 raeburn 7085: if ($ok) {
1.535 raeburn 7086: my $realcommand = $command;
7087: if ($command eq 'querysend') {
7088: my ($query,$rest)=split(/\:/,$tail,2);
7089: $query=~s/\n*$//g;
7090: my @possqueries =
7091: qw(userlog courselog fetchenrollment institutionalphotos usersearch instdirsearch getinstuser getmultinstusers);
7092: if (grep(/^\Q$query\E$/,@possqueries)) {
7093: $command .= '_'.$query;
7094: } elsif ($query eq 'prepare activity log') {
7095: $command .= '_activitylog';
7096: }
7097: }
1.525 raeburn 7098: if (ref($trust{$command}) eq 'HASH') {
7099: my $donechecks;
7100: if ($trust{$command}{'anywhere'}) {
7101: $donechecks = 1;
7102: } elsif ($trust{$command}{'manageronly'}) {
7103: unless (&isManager()) {
7104: $ok = 0;
7105: }
7106: $donechecks = 1;
7107: } elsif ($trust{$command}{'institutiononly'}) {
7108: unless ($clientsameinst) {
7109: $ok = 0;
7110: }
7111: $donechecks = 1;
7112: } elsif ($clientsameinst) {
7113: $donechecks = 1;
7114: }
7115: unless ($donechecks) {
7116: foreach my $rule (keys(%{$trust{$command}})) {
7117: next if ($rule eq 'remote');
7118: if ($trust{$command}{$rule}) {
7119: if ($clientprohibited{$rule}) {
7120: $ok = 0;
7121: } else {
7122: $ok = 1;
7123: $donechecks = 1;
7124: last;
7125: }
7126: }
7127: }
7128: }
7129: unless ($donechecks) {
7130: if ($trust{$command}{'remote'}) {
7131: if ($clientremoteok) {
7132: $ok = 1;
7133: } else {
7134: $ok = 0;
7135: }
7136: }
7137: }
7138: }
1.535 raeburn 7139: $command = $realcommand;
1.525 raeburn 7140: }
1.213 foxr 7141:
7142: if($ok) {
7143: Debug("Dispatching to handler $command $tail");
7144: my $keep_going = &$handler($command, $tail, $client);
7145: return $keep_going;
7146: } else {
7147: Debug("Refusing to dispatch because client did not match requirements");
7148: Failure($client, "refused\n", $userinput);
7149: return 1;
7150: }
1.525 raeburn 7151: }
1.213 foxr 7152:
1.262 foxr 7153: print $client "unknown_cmd\n";
1.212 foxr 7154: # -------------------------------------------------------------------- complete
7155: Debug("process_request - returning 1");
7156: return 1;
7157: }
1.207 foxr 7158: #
7159: # Decipher encoded traffic
7160: # Parameters:
7161: # input - Encoded data.
7162: # Returns:
7163: # Decoded data or undef if encryption key was not yet negotiated.
7164: # Implicit input:
7165: # cipher - This global holds the negotiated encryption key.
7166: #
1.211 albertel 7167: sub decipher {
1.207 foxr 7168: my ($input) = @_;
7169: my $output = '';
1.212 foxr 7170:
7171:
1.207 foxr 7172: if($cipher) {
7173: my($enc, $enclength, $encinput) = split(/:/, $input);
7174: for(my $encidx = 0; $encidx < length($encinput); $encidx += 16) {
7175: $output .=
7176: $cipher->decrypt(pack("H16", substr($encinput, $encidx, 16)));
7177: }
7178: return substr($output, 0, $enclength);
7179: } else {
7180: return undef;
7181: }
7182: }
7183:
7184: #
7185: # Register a command processor. This function is invoked to register a sub
7186: # to process a request. Once registered, the ProcessRequest sub can automatically
7187: # dispatch requests to an appropriate sub, and do the top level validity checking
7188: # as well:
7189: # - Is the keyword recognized.
7190: # - Is the proper client type attempting the request.
7191: # - Is the request encrypted if it has to be.
7192: # Parameters:
7193: # $request_name - Name of the request being registered.
7194: # This is the command request that will match
7195: # against the hash keywords to lookup the information
7196: # associated with the dispatch information.
7197: # $procedure - Reference to a sub to call to process the request.
7198: # All subs get called as follows:
7199: # Procedure($cmd, $tail, $replyfd, $key)
7200: # $cmd - the actual keyword that invoked us.
7201: # $tail - the tail of the request that invoked us.
7202: # $replyfd- File descriptor connected to the client
7203: # $must_encode - True if the request must be encoded to be good.
7204: # $client_ok - True if it's ok for a client to request this.
7205: # $manager_ok - True if it's ok for a manager to request this.
7206: # Side effects:
7207: # - On success, the Dispatcher hash has an entry added for the key $RequestName
7208: # - On failure, the program will die as it's a bad internal bug to try to
7209: # register a duplicate command handler.
7210: #
1.211 albertel 7211: sub register_handler {
1.212 foxr 7212: my ($request_name,$procedure,$must_encode, $client_ok,$manager_ok) = @_;
1.207 foxr 7213:
7214: # Don't allow duplication#
7215:
7216: if (defined $Dispatcher{$request_name}) {
7217: die "Attempting to define a duplicate request handler for $request_name\n";
7218: }
7219: # Build the client type mask:
7220:
7221: my $client_type_mask = 0;
7222: if($client_ok) {
7223: $client_type_mask |= $CLIENT_OK;
7224: }
7225: if($manager_ok) {
7226: $client_type_mask |= $MANAGER_OK;
7227: }
7228:
7229: # Enter the hash:
7230:
7231: my @entry = ($procedure, $must_encode, $client_type_mask);
7232:
7233: $Dispatcher{$request_name} = \@entry;
7234:
7235: }
7236:
7237:
7238: #------------------------------------------------------------------
7239:
7240:
7241:
7242:
1.141 foxr 7243: #
1.96 foxr 7244: # Convert an error return code from lcpasswd to a string value.
7245: #
7246: sub lcpasswdstrerror {
7247: my $ErrorCode = shift;
1.97 foxr 7248: if(($ErrorCode < 0) || ($ErrorCode > $lastpwderror)) {
1.96 foxr 7249: return "lcpasswd Unrecognized error return value ".$ErrorCode;
7250: } else {
1.98 foxr 7251: return $passwderrors[$ErrorCode];
1.96 foxr 7252: }
7253: }
7254:
1.23 harris41 7255: # grabs exception and records it to log before exiting
7256: sub catchexception {
1.27 albertel 7257: my ($error)=@_;
1.25 www 7258: $SIG{'QUIT'}='DEFAULT';
7259: $SIG{__DIE__}='DEFAULT';
1.165 albertel 7260: &status("Catching exception");
1.190 albertel 7261: &logthis("<font color='red'>CRITICAL: "
1.373 albertel 7262: ."ABNORMAL EXIT. Child $$ for server ".$perlvar{'lonHostID'}." died through "
1.27 albertel 7263: ."a crash with this error msg->[$error]</font>");
1.57 www 7264: &logthis('Famous last words: '.$status.' - '.$lastlog);
1.27 albertel 7265: if ($client) { print $client "error: $error\n"; }
1.59 www 7266: $server->close();
1.27 albertel 7267: die($error);
1.23 harris41 7268: }
1.63 www 7269: sub timeout {
1.165 albertel 7270: &status("Handling Timeout");
1.190 albertel 7271: &logthis("<font color='red'>CRITICAL: TIME OUT ".$$."</font>");
1.63 www 7272: &catchexception('Timeout');
7273: }
1.22 harris41 7274: # -------------------------------- Set signal handlers to record abnormal exits
7275:
1.226 foxr 7276:
1.22 harris41 7277: $SIG{'QUIT'}=\&catchexception;
7278: $SIG{__DIE__}=\&catchexception;
7279:
1.81 matthew 7280: # ---------------------------------- Read loncapa_apache.conf and loncapa.conf
1.95 harris41 7281: &status("Read loncapa.conf and loncapa_apache.conf");
7282: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
1.141 foxr 7283: %perlvar=%{$perlvarref};
1.80 harris41 7284: undef $perlvarref;
1.19 www 7285:
1.35 harris41 7286: # ----------------------------- Make sure this process is running from user=www
7287: my $wwwid=getpwnam('www');
7288: if ($wwwid!=$<) {
1.134 albertel 7289: my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
7290: my $subj="LON: $currenthostid User ID mismatch";
1.550 raeburn 7291: system("echo 'User ID mismatch. lond must be run as user www.' |".
7292: " mail -s '$subj' $emailto > /dev/null");
1.35 harris41 7293: exit 1;
7294: }
7295:
1.19 www 7296: # --------------------------------------------- Check if other instance running
7297:
7298: my $pidfile="$perlvar{'lonDaemons'}/logs/lond.pid";
7299:
7300: if (-e $pidfile) {
7301: my $lfh=IO::File->new("$pidfile");
7302: my $pide=<$lfh>;
7303: chomp($pide);
1.29 harris41 7304: if (kill 0 => $pide) { die "already running"; }
1.19 www 7305: }
1.1 albertel 7306:
7307: # ------------------------------------------------------------- Read hosts file
7308:
7309:
7310:
7311: # establish SERVER socket, bind and listen.
7312: $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},
7313: Type => SOCK_STREAM,
7314: Proto => 'tcp',
1.469 foxr 7315: ReuseAddr => 1,
1.1 albertel 7316: Listen => 10 )
1.29 harris41 7317: or die "making socket: $@\n";
1.1 albertel 7318:
7319: # --------------------------------------------------------- Do global variables
7320:
7321: # global variables
7322:
1.134 albertel 7323: my %children = (); # keys are current child process IDs
1.1 albertel 7324:
7325: sub REAPER { # takes care of dead children
7326: $SIG{CHLD} = \&REAPER;
1.165 albertel 7327: &status("Handling child death");
1.178 foxr 7328: my $pid;
7329: do {
7330: $pid = waitpid(-1,&WNOHANG());
7331: if (defined($children{$pid})) {
7332: &logthis("Child $pid died");
7333: delete($children{$pid});
1.183 albertel 7334: } elsif ($pid > 0) {
1.178 foxr 7335: &logthis("Unknown Child $pid died");
7336: }
7337: } while ( $pid > 0 );
7338: foreach my $child (keys(%children)) {
7339: $pid = waitpid($child,&WNOHANG());
7340: if ($pid > 0) {
7341: &logthis("Child $child - $pid looks like we missed it's death");
7342: delete($children{$pid});
7343: }
1.176 albertel 7344: }
1.165 albertel 7345: &status("Finished Handling child death");
1.1 albertel 7346: }
7347:
7348: sub HUNTSMAN { # signal handler for SIGINT
1.165 albertel 7349: &status("Killing children (INT)");
1.1 albertel 7350: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
7351: kill 'INT' => keys %children;
1.59 www 7352: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.1 albertel 7353: my $execdir=$perlvar{'lonDaemons'};
7354: unlink("$execdir/logs/lond.pid");
1.190 albertel 7355: &logthis("<font color='red'>CRITICAL: Shutting down</font>");
1.165 albertel 7356: &status("Done killing children");
1.1 albertel 7357: exit; # clean up with dignity
7358: }
7359:
7360: sub HUPSMAN { # signal handler for SIGHUP
7361: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
1.165 albertel 7362: &status("Killing children for restart (HUP)");
1.1 albertel 7363: kill 'INT' => keys %children;
1.59 www 7364: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.190 albertel 7365: &logthis("<font color='red'>CRITICAL: Restarting</font>");
1.134 albertel 7366: my $execdir=$perlvar{'lonDaemons'};
1.30 harris41 7367: unlink("$execdir/logs/lond.pid");
1.165 albertel 7368: &status("Restarting self (HUP)");
1.1 albertel 7369: exec("$execdir/lond"); # here we go again
7370: }
7371:
1.144 foxr 7372: #
1.148 foxr 7373: # Reload the Apache daemon's state.
1.150 foxr 7374: # This is done by invoking /home/httpd/perl/apachereload
7375: # a setuid perl script that can be root for us to do this job.
1.148 foxr 7376: #
7377: sub ReloadApache {
1.473 raeburn 7378: # --------------------------- Handle case of another apachereload process (locking)
1.474 raeburn 7379: if (&LONCAPA::try_to_lock('/tmp/lock_apachereload')) {
7380: my $execdir = $perlvar{'lonDaemons'};
7381: my $script = $execdir."/apachereload";
7382: system($script);
7383: unlink('/tmp/lock_apachereload'); # Remove the lock file.
7384: }
1.148 foxr 7385: }
7386:
7387: #
1.144 foxr 7388: # Called in response to a USR2 signal.
7389: # - Reread hosts.tab
7390: # - All children connected to hosts that were removed from hosts.tab
7391: # are killed via SIGINT
7392: # - All children connected to previously existing hosts are sent SIGUSR1
7393: # - Our internal hosts hash is updated to reflect the new contents of
7394: # hosts.tab causing connections from hosts added to hosts.tab to
7395: # now be honored.
7396: #
7397: sub UpdateHosts {
1.165 albertel 7398: &status("Reload hosts.tab");
1.147 foxr 7399: logthis('<font color="blue"> Updating connections </font>');
1.148 foxr 7400: #
7401: # The %children hash has the set of IP's we currently have children
7402: # on. These need to be matched against records in the hosts.tab
7403: # Any ip's no longer in the table get killed off they correspond to
7404: # either dropped or changed hosts. Note that the re-read of the table
7405: # will take care of new and changed hosts as connections come into being.
7406:
1.371 albertel 7407: &Apache::lonnet::reset_hosts_info();
1.532 raeburn 7408: my %active;
1.148 foxr 7409:
1.368 albertel 7410: foreach my $child (keys(%children)) {
1.148 foxr 7411: my $childip = $children{$child};
1.374 albertel 7412: if ($childip ne '127.0.0.1'
7413: && !defined(&Apache::lonnet::get_hosts_from_ip($childip))) {
1.149 foxr 7414: logthis('<font color="blue"> UpdateHosts killing child '
7415: ." $child for ip $childip </font>");
1.148 foxr 7416: kill('INT', $child);
1.149 foxr 7417: } else {
1.532 raeburn 7418: $active{$child} = $childip;
1.149 foxr 7419: logthis('<font color="green"> keeping child for ip '
7420: ." $childip (pid=$child) </font>");
1.148 foxr 7421: }
7422: }
1.532 raeburn 7423:
7424: my %oldconf = %secureconf;
7425: my %connchange;
1.555 raeburn 7426: if (lonssl::Read_Connect_Config(\%secureconf,\%perlvar,\%crlchecked) eq 'ok') {
1.545 raeburn 7427: logthis('<font color="blue"> Reloaded SSL connection rules and cleared CRL checking history </font>');
1.532 raeburn 7428: } else {
1.545 raeburn 7429: logthis('<font color="yellow"> Failed to reload SSL connection rules and clear CRL checking history </font>');
1.532 raeburn 7430: }
7431: if ((ref($oldconf{'connfrom'}) eq 'HASH') && (ref($secureconf{'connfrom'}) eq 'HASH')) {
7432: foreach my $type ('dom','intdom','other') {
7433: if ((($oldconf{'connfrom'}{$type} eq 'no') && ($secureconf{'connfrom'}{$type} eq 'req')) ||
7434: (($oldconf{'connfrom'}{$type} eq 'req') && ($secureconf{'connfrom'}{$type} eq 'no'))) {
7435: $connchange{$type} = 1;
7436: }
7437: }
7438: }
7439: if (keys(%connchange)) {
7440: foreach my $child (keys(%active)) {
7441: my $childip = $active{$child};
7442: if ($childip ne '127.0.0.1') {
7443: my $childhostname = gethostbyaddr(Socket::inet_aton($childip),AF_INET);
7444: if ($childhostname ne '') {
7445: my $childlonhost = &Apache::lonnet::get_server_homeID($childhostname);
7446: my ($samedom,$sameinst) = &set_client_info($childlonhost);
7447: if ($samedom) {
7448: if ($connchange{'dom'}) {
7449: logthis('<font color="blue"> UpdateHosts killing child '
7450: ." $child for ip $childip </font>");
7451: kill('INT', $child);
7452: }
7453: } elsif ($sameinst) {
7454: if ($connchange{'intdom'}) {
7455: logthis('<font color="blue"> UpdateHosts killing child '
7456: ." $child for ip $childip </font>");
7457: kill('INT', $child);
7458: }
7459: } else {
7460: if ($connchange{'other'}) {
7461: logthis('<font color="blue"> UpdateHosts killing child '
7462: ." $child for ip $childip </font>");
7463: kill('INT', $child);
7464: }
7465: }
7466: }
7467: }
7468: }
7469: }
1.148 foxr 7470: ReloadApache;
1.165 albertel 7471: &status("Finished reloading hosts.tab");
1.144 foxr 7472: }
7473:
1.57 www 7474: sub checkchildren {
1.165 albertel 7475: &status("Checking on the children (sending signals)");
1.57 www 7476: &initnewstatus();
7477: &logstatus();
7478: &logthis('Going to check on the children');
1.134 albertel 7479: my $docdir=$perlvar{'lonDocRoot'};
1.61 harris41 7480: foreach (sort keys %children) {
1.221 albertel 7481: #sleep 1;
1.57 www 7482: unless (kill 'USR1' => $_) {
7483: &logthis ('Child '.$_.' is dead');
7484: &logstatus($$.' is dead');
1.221 albertel 7485: delete($children{$_});
1.57 www 7486: }
1.61 harris41 7487: }
1.63 www 7488: sleep 5;
1.212 foxr 7489: $SIG{ALRM} = sub { Debug("timeout");
7490: die "timeout"; };
1.113 albertel 7491: $SIG{__DIE__} = 'DEFAULT';
1.165 albertel 7492: &status("Checking on the children (waiting for reports)");
1.63 www 7493: foreach (sort keys %children) {
7494: unless (-e "$docdir/lon-status/londchld/$_.txt") {
1.113 albertel 7495: eval {
7496: alarm(300);
1.63 www 7497: &logthis('Child '.$_.' did not respond');
1.67 albertel 7498: kill 9 => $_;
1.131 albertel 7499: #$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
7500: #$subj="LON: $currenthostid killed lond process $_";
7501: #my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null`;
7502: #$execdir=$perlvar{'lonDaemons'};
7503: #$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_`;
1.221 albertel 7504: delete($children{$_});
1.113 albertel 7505: alarm(0);
7506: }
1.63 www 7507: }
7508: }
1.113 albertel 7509: $SIG{ALRM} = 'DEFAULT';
1.155 albertel 7510: $SIG{__DIE__} = \&catchexception;
1.165 albertel 7511: &status("Finished checking children");
1.221 albertel 7512: &logthis('Finished Checking children');
1.57 www 7513: }
7514:
1.1 albertel 7515: # --------------------------------------------------------------------- Logging
7516:
7517: sub logthis {
7518: my $message=shift;
7519: my $execdir=$perlvar{'lonDaemons'};
7520: my $fh=IO::File->new(">>$execdir/logs/lond.log");
7521: my $now=time;
7522: my $local=localtime($now);
1.58 www 7523: $lastlog=$local.': '.$message;
1.1 albertel 7524: print $fh "$local ($$): $message\n";
7525: }
7526:
1.77 foxr 7527: # ------------------------- Conditional log if $DEBUG true.
7528: sub Debug {
7529: my $message = shift;
7530: if($DEBUG) {
7531: &logthis($message);
7532: }
7533: }
1.161 foxr 7534:
7535: #
7536: # Sub to do replies to client.. this gives a hook for some
7537: # debug tracing too:
7538: # Parameters:
7539: # fd - File open on client.
7540: # reply - Text to send to client.
7541: # request - Original request from client.
7542: #
1.490 droeschl 7543: #NOTE $reply must be terminated by exactly *one* \n. If $reply is a reference
7544: #this is done automatically ($$reply must not contain any \n in this case).
7545: #If $reply is a string the caller has to ensure this.
1.161 foxr 7546: sub Reply {
1.192 foxr 7547: my ($fd, $reply, $request) = @_;
1.387 albertel 7548: if (ref($reply)) {
7549: print $fd $$reply;
7550: print $fd "\n";
7551: if ($DEBUG) { Debug("Request was $request Reply was $$reply"); }
7552: } else {
7553: print $fd $reply;
7554: if ($DEBUG) { Debug("Request was $request Reply was $reply"); }
7555: }
1.212 foxr 7556: $Transactions++;
7557: }
7558:
7559:
7560: #
7561: # Sub to report a failure.
7562: # This function:
7563: # - Increments the failure statistic counters.
7564: # - Invokes Reply to send the error message to the client.
7565: # Parameters:
7566: # fd - File descriptor open on the client
7567: # reply - Reply text to emit.
7568: # request - The original request message (used by Reply
7569: # to debug if that's enabled.
7570: # Implicit outputs:
7571: # $Failures- The number of failures is incremented.
7572: # Reply (invoked here) sends a message to the
7573: # client:
7574: #
7575: sub Failure {
7576: my $fd = shift;
7577: my $reply = shift;
7578: my $request = shift;
7579:
7580: $Failures++;
7581: Reply($fd, $reply, $request); # That's simple eh?
1.161 foxr 7582: }
1.57 www 7583: # ------------------------------------------------------------------ Log status
7584:
7585: sub logstatus {
1.178 foxr 7586: &status("Doing logging");
7587: my $docdir=$perlvar{'lonDocRoot'};
7588: {
7589: my $fh=IO::File->new(">$docdir/lon-status/londchld/$$.txt");
1.200 matthew 7590: print $fh $status."\n".$lastlog."\n".time."\n$keymode";
1.178 foxr 7591: $fh->close();
7592: }
1.221 albertel 7593: &status("Finished $$.txt");
7594: {
7595: open(LOG,">>$docdir/lon-status/londstatus.txt");
7596: flock(LOG,LOCK_EX);
7597: print LOG $$."\t".$clientname."\t".$currenthostid."\t"
7598: .$status."\t".$lastlog."\t $keymode\n";
1.275 albertel 7599: flock(LOG,LOCK_UN);
1.221 albertel 7600: close(LOG);
7601: }
1.178 foxr 7602: &status("Finished logging");
1.57 www 7603: }
7604:
7605: sub initnewstatus {
7606: my $docdir=$perlvar{'lonDocRoot'};
7607: my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt");
1.460 foxr 7608: my $now=time();
1.57 www 7609: my $local=localtime($now);
7610: print $fh "LOND status $local - parent $$\n\n";
1.64 www 7611: opendir(DIR,"$docdir/lon-status/londchld");
1.134 albertel 7612: while (my $filename=readdir(DIR)) {
1.64 www 7613: unlink("$docdir/lon-status/londchld/$filename");
7614: }
7615: closedir(DIR);
1.57 www 7616: }
7617:
7618: # -------------------------------------------------------------- Status setting
7619:
7620: sub status {
7621: my $what=shift;
7622: my $now=time;
7623: my $local=localtime($now);
1.178 foxr 7624: $status=$local.': '.$what;
7625: $0='lond: '.$what.' '.$local;
1.57 www 7626: }
1.11 www 7627:
1.13 www 7628: # -------------------------------------------------------------- Talk to lonsql
7629:
1.234 foxr 7630: sub sql_reply {
1.12 harris41 7631: my ($cmd)=@_;
1.234 foxr 7632: my $answer=&sub_sql_reply($cmd);
7633: if ($answer eq 'con_lost') { $answer=&sub_sql_reply($cmd); }
1.12 harris41 7634: return $answer;
7635: }
7636:
1.234 foxr 7637: sub sub_sql_reply {
1.12 harris41 7638: my ($cmd)=@_;
7639: my $unixsock="mysqlsock";
7640: my $peerfile="$perlvar{'lonSockDir'}/$unixsock";
7641: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
7642: Type => SOCK_STREAM,
7643: Timeout => 10)
7644: or return "con_lost";
1.319 www 7645: print $sclient "$cmd:$currentdomainid\n";
1.12 harris41 7646: my $answer=<$sclient>;
7647: chomp($answer);
7648: if (!$answer) { $answer="con_lost"; }
7649: return $answer;
7650: }
7651:
1.1 albertel 7652: # --------------------------------------- Is this the home server of an author?
1.11 www 7653:
1.1 albertel 7654: sub ishome {
7655: my $author=shift;
7656: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
7657: my ($udom,$uname)=split(/\//,$author);
7658: my $proname=propath($udom,$uname);
7659: if (-e $proname) {
7660: return 'owner';
7661: } else {
7662: return 'not_owner';
7663: }
7664: }
7665:
7666: # ======================================================= Continue main program
7667: # ---------------------------------------------------- Fork once and dissociate
7668:
1.134 albertel 7669: my $fpid=fork;
1.1 albertel 7670: exit if $fpid;
1.29 harris41 7671: die "Couldn't fork: $!" unless defined ($fpid);
1.1 albertel 7672:
1.29 harris41 7673: POSIX::setsid() or die "Can't start new session: $!";
1.1 albertel 7674:
7675: # ------------------------------------------------------- Write our PID on disk
7676:
1.134 albertel 7677: my $execdir=$perlvar{'lonDaemons'};
1.1 albertel 7678: open (PIDSAVE,">$execdir/logs/lond.pid");
7679: print PIDSAVE "$$\n";
7680: close(PIDSAVE);
1.190 albertel 7681: &logthis("<font color='red'>CRITICAL: ---------- Starting ----------</font>");
1.57 www 7682: &status('Starting');
1.1 albertel 7683:
1.106 foxr 7684:
1.1 albertel 7685:
7686: # ----------------------------------------------------- Install signal handlers
7687:
1.57 www 7688:
1.1 albertel 7689: $SIG{CHLD} = \&REAPER;
7690: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
7691: $SIG{HUP} = \&HUPSMAN;
1.57 www 7692: $SIG{USR1} = \&checkchildren;
1.144 foxr 7693: $SIG{USR2} = \&UpdateHosts;
1.106 foxr 7694:
1.148 foxr 7695: # Read the host hashes:
1.368 albertel 7696: &Apache::lonnet::load_hosts_tab();
1.447 raeburn 7697: my %iphost = &Apache::lonnet::get_iphost(1);
1.106 foxr 7698:
1.480 raeburn 7699: $dist=`$perlvar{'lonDaemons'}/distprobe`;
1.286 albertel 7700:
1.471 raeburn 7701: my $arch = `uname -i`;
1.475 raeburn 7702: chomp($arch);
1.471 raeburn 7703: if ($arch eq 'unknown') {
7704: $arch = `uname -m`;
1.475 raeburn 7705: chomp($arch);
1.471 raeburn 7706: }
7707:
1.555 raeburn 7708: unless (lonssl::Read_Connect_Config(\%secureconf,\%perlvar,\%crlchecked) eq 'ok') {
1.532 raeburn 7709: &logthis('<font color="blue">No connectionrules table. Will fallback to loncapa.conf</font>');
7710: }
7711:
1.106 foxr 7712: # --------------------------------------------------------------
7713: # Accept connections. When a connection comes in, it is validated
7714: # and if good, a child process is created to process transactions
7715: # along the connection.
7716:
1.1 albertel 7717: while (1) {
1.165 albertel 7718: &status('Starting accept');
1.106 foxr 7719: $client = $server->accept() or next;
1.165 albertel 7720: &status('Accepted '.$client.' off to spawn');
1.386 albertel 7721: make_new_child($client);
1.165 albertel 7722: &status('Finished spawning');
1.1 albertel 7723: }
7724:
1.212 foxr 7725: sub make_new_child {
7726: my $pid;
7727: # my $cipher; # Now global
7728: my $sigset;
1.178 foxr 7729:
1.212 foxr 7730: $client = shift;
7731: &status('Starting new child '.$client);
7732: &logthis('<font color="green"> Attempting to start child ('.$client.
7733: ")</font>");
7734: # block signal for fork
7735: $sigset = POSIX::SigSet->new(SIGINT);
7736: sigprocmask(SIG_BLOCK, $sigset)
7737: or die "Can't block SIGINT for fork: $!\n";
1.178 foxr 7738:
1.212 foxr 7739: die "fork: $!" unless defined ($pid = fork);
1.178 foxr 7740:
1.212 foxr 7741: $client->sockopt(SO_KEEPALIVE, 1); # Enable monitoring of
7742: # connection liveness.
1.178 foxr 7743:
1.212 foxr 7744: #
7745: # Figure out who we're talking to so we can record the peer in
7746: # the pid hash.
7747: #
7748: my $caller = getpeername($client);
7749: my ($port,$iaddr);
7750: if (defined($caller) && length($caller) > 0) {
7751: ($port,$iaddr)=unpack_sockaddr_in($caller);
7752: } else {
7753: &logthis("Unable to determine who caller was, getpeername returned nothing");
7754: }
7755: if (defined($iaddr)) {
7756: $clientip = inet_ntoa($iaddr);
7757: Debug("Connected with $clientip");
7758: } else {
7759: &logthis("Unable to determine clientip");
7760: $clientip='Unavailable';
7761: }
7762:
7763: if ($pid) {
7764: # Parent records the child's birth and returns.
7765: sigprocmask(SIG_UNBLOCK, $sigset)
7766: or die "Can't unblock SIGINT for fork: $!\n";
7767: $children{$pid} = $clientip;
7768: &status('Started child '.$pid);
1.462 foxr 7769: close($client);
1.212 foxr 7770: return;
7771: } else {
7772: # Child can *not* return from this subroutine.
7773: $SIG{INT} = 'DEFAULT'; # make SIGINT kill us as it did before
7774: $SIG{CHLD} = 'DEFAULT'; #make this default so that pwauth returns
7775: #don't get intercepted
7776: $SIG{USR1}= \&logstatus;
7777: $SIG{ALRM}= \&timeout;
1.468 foxr 7778: #
7779: # Block sigpipe as it gets thrownon socket disconnect and we want to
7780: # deal with that as a read faiure instead.
7781: #
7782: my $blockset = POSIX::SigSet->new(SIGPIPE);
7783: sigprocmask(SIG_BLOCK, $blockset);
7784:
1.212 foxr 7785: $lastlog='Forked ';
7786: $status='Forked';
1.178 foxr 7787:
1.212 foxr 7788: # unblock signals
7789: sigprocmask(SIG_UNBLOCK, $sigset)
7790: or die "Can't unblock SIGINT for fork: $!\n";
1.178 foxr 7791:
1.212 foxr 7792: # my $tmpsnum=0; # Now global
7793: #---------------------------------------------------- kerberos 5 initialization
7794: &Authen::Krb5::init_context();
1.511 raeburn 7795:
7796: my $no_ets;
1.559 raeburn 7797: if ($dist =~ /^(?:centos|rhes|scientific|oracle)(\d+)$/) {
1.511 raeburn 7798: if ($1 >= 7) {
7799: $no_ets = 1;
7800: }
7801: } elsif ($dist =~ /^suse(\d+\.\d+)$/) {
7802: if (($1 eq '9.3') || ($1 >= 12.2)) {
7803: $no_ets = 1;
7804: }
1.514 raeburn 7805: } elsif ($dist =~ /^sles(\d+)$/) {
7806: if ($1 > 11) {
7807: $no_ets = 1;
7808: }
1.511 raeburn 7809: } elsif ($dist =~ /^fedora(\d+)$/) {
7810: if ($1 < 7) {
7811: $no_ets = 1;
7812: }
7813: }
7814: unless ($no_ets) {
1.286 albertel 7815: &Authen::Krb5::init_ets();
7816: }
1.209 albertel 7817:
1.212 foxr 7818: &status('Accepted connection');
7819: # =============================================================================
7820: # do something with the connection
7821: # -----------------------------------------------------------------------------
7822: # see if we know client and 'check' for spoof IP by ineffective challenge
1.178 foxr 7823:
1.278 albertel 7824: my $outsideip=$clientip;
7825: if ($clientip eq '127.0.0.1') {
1.368 albertel 7826: $outsideip=&Apache::lonnet::get_host_ip($perlvar{'lonHostID'});
1.278 albertel 7827: }
1.412 foxr 7828: &ReadManagerTable();
1.368 albertel 7829: my $clientrec=defined(&Apache::lonnet::get_hosts_from_ip($outsideip));
1.278 albertel 7830: my $ismanager=($managers{$outsideip} ne undef);
1.432 raeburn 7831: $clientname = "[unknown]";
1.212 foxr 7832: if($clientrec) { # Establish client type.
7833: $ConnectionType = "client";
1.368 albertel 7834: $clientname = (&Apache::lonnet::get_hosts_from_ip($outsideip))[-1];
1.212 foxr 7835: if($ismanager) {
7836: $ConnectionType = "both";
7837: }
7838: } else {
7839: $ConnectionType = "manager";
1.278 albertel 7840: $clientname = $managers{$outsideip};
1.212 foxr 7841: }
1.556 raeburn 7842: my $clientok;
1.178 foxr 7843:
1.212 foxr 7844: if ($clientrec || $ismanager) {
7845: &status("Waiting for init from $clientip $clientname");
7846: &logthis('<font color="yellow">INFO: Connection, '.
7847: $clientip.
7848: " ($clientname) connection type = $ConnectionType </font>" );
7849: &status("Connecting $clientip ($clientname))");
7850: my $remotereq=<$client>;
7851: chomp($remotereq);
7852: Debug("Got init: $remotereq");
1.337 albertel 7853:
1.212 foxr 7854: if ($remotereq =~ /^init/) {
7855: &sethost("sethost:$perlvar{'lonHostID'}");
7856: #
7857: # If the remote is attempting a local init... give that a try:
7858: #
1.432 raeburn 7859: (my $i, my $inittype, $clientversion) = split(/:/, $remotereq);
1.492 droeschl 7860: # For LON-CAPA 2.9, the client session will have sent its LON-CAPA
7861: # version when initiating the connection. For LON-CAPA 2.8 and older,
7862: # the version is retrieved from the global %loncaparevs in lonnet.pm.
1.494 droeschl 7863: # $clientversion contains path to keyfile if $inittype eq 'local'
7864: # it's overridden below in this case
1.492 droeschl 7865: $clientversion ||= $Apache::lonnet::loncaparevs{$clientname};
1.209 albertel 7866:
1.212 foxr 7867: # If the connection type is ssl, but I didn't get my
7868: # certificate files yet, then I'll drop back to
7869: # insecure (if allowed).
1.532 raeburn 7870:
7871: if ($inittype eq "ssl") {
7872: my $context;
7873: if ($clientsamedom) {
7874: $context = 'dom';
7875: if ($secureconf{'connfrom'}{'dom'} eq 'no') {
7876: $inittype = "";
7877: }
7878: } elsif ($clientsameinst) {
7879: $context = 'intdom';
7880: if ($secureconf{'connfrom'}{'intdom'} eq 'no') {
7881: $inittype = "";
7882: }
7883: } else {
7884: $context = 'other';
7885: if ($secureconf{'connfrom'}{'other'} eq 'no') {
7886: $inittype = "";
7887: }
7888: }
7889: if ($inittype eq '') {
7890: &logthis("<font color=\"blue\"> Domain config set "
7891: ."to no ssl for $clientname (context: $context)"
7892: ." -- trying insecure auth</font>");
7893: }
7894: }
7895:
1.212 foxr 7896: if($inittype eq "ssl") {
7897: my ($ca, $cert) = lonssl::CertificateFile;
7898: my $kfile = lonssl::KeyFile;
7899: if((!$ca) ||
7900: (!$cert) ||
7901: (!$kfile)) {
7902: $inittype = ""; # This forces insecure attempt.
7903: &logthis("<font color=\"blue\"> Certificates not "
7904: ."installed -- trying insecure auth</font>");
1.224 foxr 7905: } else { # SSL certificates are in place so
1.212 foxr 7906: } # Leave the inittype alone.
7907: }
7908:
7909: if($inittype eq "local") {
1.432 raeburn 7910: $clientversion = $perlvar{'lonVersion'};
1.212 foxr 7911: my $key = LocalConnection($client, $remotereq);
7912: if($key) {
7913: Debug("Got local key $key");
7914: $clientok = 1;
7915: my $cipherkey = pack("H32", $key);
7916: $cipher = new IDEA($cipherkey);
7917: print $client "ok:local\n";
1.442 www 7918: &logthis('<font color="green">'
1.212 foxr 7919: . "Successful local authentication </font>");
7920: $keymode = "local"
1.178 foxr 7921: } else {
1.212 foxr 7922: Debug("Failed to get local key");
7923: $clientok = 0;
7924: shutdown($client, 3);
7925: close $client;
1.178 foxr 7926: }
1.212 foxr 7927: } elsif ($inittype eq "ssl") {
1.532 raeburn 7928: my $key = SSLConnection($client,$clientname);
1.212 foxr 7929: if ($key) {
7930: $clientok = 1;
7931: my $cipherkey = pack("H32", $key);
7932: $cipher = new IDEA($cipherkey);
7933: &logthis('<font color="green">'
7934: ."Successfull ssl authentication with $clientname </font>");
7935: $keymode = "ssl";
7936:
1.178 foxr 7937: } else {
1.212 foxr 7938: $clientok = 0;
7939: close $client;
1.178 foxr 7940: }
1.212 foxr 7941:
7942: } else {
7943: my $ok = InsecureConnection($client);
7944: if($ok) {
7945: $clientok = 1;
7946: &logthis('<font color="green">'
7947: ."Successful insecure authentication with $clientname </font>");
7948: print $client "ok\n";
7949: $keymode = "insecure";
1.178 foxr 7950: } else {
1.212 foxr 7951: &logthis('<font color="yellow">'
7952: ."Attempted insecure connection disallowed </font>");
7953: close $client;
7954: $clientok = 0;
1.178 foxr 7955: }
7956: }
1.212 foxr 7957: } else {
7958: &logthis(
7959: "<font color='blue'>WARNING: "
7960: ."$clientip failed to initialize: >$remotereq< </font>");
7961: &status('No init '.$clientip);
7962: }
7963: } else {
7964: &logthis(
7965: "<font color='blue'>WARNING: Unknown client $clientip</font>");
7966: &status('Hung up on '.$clientip);
7967: }
7968:
7969: if ($clientok) {
7970: # ---------------- New known client connecting, could mean machine online again
1.368 albertel 7971: if (&Apache::lonnet::get_host_ip($currenthostid) ne $clientip
1.367 albertel 7972: && $clientip ne '127.0.0.1') {
1.375 albertel 7973: &Apache::lonnet::reconlonc($clientname);
1.212 foxr 7974: }
7975: &logthis("<font color='green'>Established connection: $clientname</font>");
7976: &status('Will listen to '.$clientname);
7977: # ------------------------------------------------------------ Process requests
7978: my $keep_going = 1;
7979: my $user_input;
1.556 raeburn 7980:
1.212 foxr 7981: while(($user_input = get_request) && $keep_going) {
7982: alarm(120);
7983: Debug("Main: Got $user_input\n");
7984: $keep_going = &process_request($user_input);
1.178 foxr 7985: alarm(0);
1.212 foxr 7986: &status('Listening to '.$clientname." ($keymode)");
1.161 foxr 7987: }
1.212 foxr 7988:
1.59 www 7989: # --------------------------------------------- client unknown or fishy, refuse
1.212 foxr 7990: } else {
1.161 foxr 7991: print $client "refused\n";
7992: $client->close();
1.190 albertel 7993: &logthis("<font color='blue'>WARNING: "
1.161 foxr 7994: ."Rejected client $clientip, closing connection</font>");
7995: }
1.525 raeburn 7996: }
1.161 foxr 7997:
1.1 albertel 7998: # =============================================================================
1.161 foxr 7999:
1.190 albertel 8000: &logthis("<font color='red'>CRITICAL: "
1.161 foxr 8001: ."Disconnect from $clientip ($clientname)</font>");
8002:
8003:
8004: # this exit is VERY important, otherwise the child will become
8005: # a producer of more and more children, forking yourself into
8006: # process death.
8007: exit;
1.106 foxr 8008:
1.78 foxr 8009: }
1.532 raeburn 8010:
8011: #
8012: # Used to determine if a particular client is from the same domain
1.556 raeburn 8013: # as the current server, or from the same internet domain, and
8014: # also if the client can host sessions for the domain's users.
8015: # A hash is populated with keys set to commands sent by the client
8016: # which may not be executed for this domain.
1.532 raeburn 8017: #
8018: # Optional input -- the client to check for domain and internet domain.
8019: # If not specified, defaults to the package variable: $clientname
8020: #
8021: # If called in array context will not set package variables, but will
8022: # instead return an array of two values - (a) true if client is in the
1.556 raeburn 8023: # same domain as the server, and (b) true if client is in the same
8024: # internet domain.
1.532 raeburn 8025: #
8026: # If called in scalar context, sets package variables for current client:
8027: #
1.556 raeburn 8028: # $clienthomedom - LonCAPA domain of homeID for client.
8029: # $clientsamedom - LonCAPA domain same for this host and client.
8030: # $clientintdom - LonCAPA "internet domain" for client.
8031: # $clientsameinst - LonCAPA "internet domain" same for this host & client.
8032: # $clientremoteok - If current domain permits hosting on this client: 1
8033: # %clientprohibited - Commands prohibited for domain's users for this client.
8034: #
8035: # if the host and client have the same "internet domain", then the value
8036: # of $clientremoteok is not used, and no commands are prohibited.
1.532 raeburn 8037: #
8038: # returns 1 to indicate package variables have been set for current client.
8039: #
8040:
8041: sub set_client_info {
8042: my ($lonhost) = @_;
8043: $lonhost ||= $clientname;
8044: my $clienthost = &Apache::lonnet::hostname($lonhost);
8045: my $clientserverhomeID = &Apache::lonnet::get_server_homeID($clienthost);
8046: my $homedom = &Apache::lonnet::host_domain($clientserverhomeID);
8047: my $samedom = 0;
1.557 raeburn 8048: if ($perlvar{'lonDefDomain'} eq $homedom) {
1.532 raeburn 8049: $samedom = 1;
8050: }
8051: my $intdom = &Apache::lonnet::internet_dom($clientserverhomeID);
8052: my $sameinst = 0;
8053: if ($intdom ne '') {
8054: my $internet_names = &Apache::lonnet::get_internet_names($currenthostid);
8055: if (ref($internet_names) eq 'ARRAY') {
8056: if (grep(/^\Q$intdom\E$/,@{$internet_names})) {
8057: $sameinst = 1;
8058: }
8059: }
8060: }
8061: if (wantarray) {
8062: return ($samedom,$sameinst);
8063: } else {
8064: $clienthomedom = $homedom;
8065: $clientsamedom = $samedom;
8066: $clientintdom = $intdom;
8067: $clientsameinst = $sameinst;
1.556 raeburn 8068: if ($clientsameinst) {
8069: undef($clientremoteok);
8070: undef(%clientprohibited);
8071: } else {
8072: $clientremoteok = &get_remote_hostable($currentdomainid);
8073: %clientprohibited = &get_prohibited($currentdomainid);
8074: }
1.532 raeburn 8075: return 1;
8076: }
8077: }
8078:
1.261 foxr 8079: #
8080: # Determine if a user is an author for the indicated domain.
8081: #
8082: # Parameters:
8083: # domain - domain to check in .
8084: # user - Name of user to check.
8085: #
8086: # Return:
8087: # 1 - User is an author for domain.
8088: # 0 - User is not an author for domain.
8089: sub is_author {
8090: my ($domain, $user) = @_;
8091:
8092: &Debug("is_author: $user @ $domain");
8093:
8094: my $hashref = &tie_user_hash($domain, $user, "roles",
8095: &GDBM_READER());
8096:
8097: # Author role should show up as a key /domain/_au
1.78 foxr 8098:
1.321 albertel 8099: my $value;
1.487 foxr 8100: if ($hashref) {
1.78 foxr 8101:
1.487 foxr 8102: my $key = "/$domain/_au";
8103: if (defined($hashref)) {
8104: $value = $hashref->{$key};
8105: if(!untie_user_hash($hashref)) {
8106: return 'error: ' . ($!+0)." untie (GDBM) Failed";
8107: }
8108: }
8109:
8110: if(defined($value)) {
8111: &Debug("$user @ $domain is an author");
8112: }
8113: } else {
8114: return 'error: '.($!+0)." tie (GDBM) Failed";
1.261 foxr 8115: }
8116:
8117: return defined($value);
8118: }
1.78 foxr 8119: #
8120: # Checks to see if the input roleput request was to set
1.482 www 8121: # an author role. If so, creates construction space
1.78 foxr 8122: # Parameters:
8123: # request - The request sent to the rolesput subchunk.
8124: # We're looking for /domain/_au
8125: # domain - The domain in which the user is having roles doctored.
8126: # user - Name of the user for which the role is being put.
8127: # authtype - The authentication type associated with the user.
8128: #
1.289 albertel 8129: sub manage_permissions {
1.192 foxr 8130: my ($request, $domain, $user, $authtype) = @_;
1.78 foxr 8131: # See if the request is of the form /$domain/_au
1.289 albertel 8132: if($request =~ /^(\/\Q$domain\E\/_au)$/) { # It's an author rolesput...
1.484 raeburn 8133: my $path=$perlvar{'lonDocRoot'}."/priv/$domain";
1.482 www 8134: unless (-e $path) {
8135: mkdir($path);
8136: }
8137: unless (-e $path.'/'.$user) {
8138: mkdir($path.'/'.$user);
8139: }
1.78 foxr 8140: }
8141: }
1.222 foxr 8142:
8143:
8144: #
8145: # Return the full path of a user password file, whether it exists or not.
8146: # Parameters:
8147: # domain - Domain in which the password file lives.
8148: # user - name of the user.
8149: # Returns:
8150: # Full passwd path:
8151: #
8152: sub password_path {
8153: my ($domain, $user) = @_;
1.264 albertel 8154: return &propath($domain, $user).'/passwd';
1.222 foxr 8155: }
8156:
8157: # Password Filename
8158: # Returns the path to a passwd file given domain and user... only if
8159: # it exists.
8160: # Parameters:
8161: # domain - Domain in which to search.
8162: # user - username.
8163: # Returns:
8164: # - If the password file exists returns its path.
8165: # - If the password file does not exist, returns undefined.
8166: #
8167: sub password_filename {
8168: my ($domain, $user) = @_;
8169:
8170: Debug ("PasswordFilename called: dom = $domain user = $user");
8171:
8172: my $path = &password_path($domain, $user);
8173: Debug("PasswordFilename got path: $path");
8174: if(-e $path) {
8175: return $path;
8176: } else {
8177: return undef;
8178: }
8179: }
8180:
8181: #
8182: # Rewrite the contents of the user's passwd file.
8183: # Parameters:
8184: # domain - domain of the user.
8185: # name - User's name.
8186: # contents - New contents of the file.
1.533 raeburn 8187: # saveold - (optional). If true save old file in a passwd.bak file.
1.222 foxr 8188: # Returns:
8189: # 0 - Failed.
8190: # 1 - Success.
8191: #
8192: sub rewrite_password_file {
1.533 raeburn 8193: my ($domain, $user, $contents, $saveold) = @_;
1.222 foxr 8194:
8195: my $file = &password_filename($domain, $user);
8196: if (defined $file) {
1.533 raeburn 8197: if ($saveold) {
8198: my $bakfile = $file.'.bak';
8199: if (CopyFile($file,$bakfile)) {
8200: chmod(0400,$bakfile);
8201: &logthis("Old password saved in passwd.bak for internally authenticated user: $user:$domain");
8202: } else {
8203: &logthis("Failed to save old password in passwd.bak for internally authenticated user: $user:$domain");
8204: }
8205: }
1.222 foxr 8206: my $pf = IO::File->new(">$file");
8207: if($pf) {
8208: print $pf "$contents\n";
8209: return 1;
8210: } else {
8211: return 0;
8212: }
8213: } else {
8214: return 0;
8215: }
8216:
8217: }
8218:
1.78 foxr 8219: #
1.222 foxr 8220: # get_auth_type - Determines the authorization type of a user in a domain.
1.78 foxr 8221:
8222: # Returns the authorization type or nouser if there is no such user.
8223: #
1.436 raeburn 8224: sub get_auth_type {
1.192 foxr 8225: my ($domain, $user) = @_;
1.78 foxr 8226:
1.222 foxr 8227: Debug("get_auth_type( $domain, $user ) \n");
1.78 foxr 8228: my $proname = &propath($domain, $user);
8229: my $passwdfile = "$proname/passwd";
8230: if( -e $passwdfile ) {
8231: my $pf = IO::File->new($passwdfile);
8232: my $realpassword = <$pf>;
8233: chomp($realpassword);
1.79 foxr 8234: Debug("Password info = $realpassword\n");
1.78 foxr 8235: my ($authtype, $contentpwd) = split(/:/, $realpassword);
1.79 foxr 8236: Debug("Authtype = $authtype, content = $contentpwd\n");
1.259 raeburn 8237: return "$authtype:$contentpwd";
1.224 foxr 8238: } else {
1.79 foxr 8239: Debug("Returning nouser");
1.78 foxr 8240: return "nouser";
8241: }
1.1 albertel 8242: }
8243:
1.220 foxr 8244: #
8245: # Validate a user given their domain, name and password. This utility
8246: # function is used by both AuthenticateHandler and ChangePasswordHandler
8247: # to validate the login credentials of a user.
8248: # Parameters:
8249: # $domain - The domain being logged into (this is required due to
8250: # the capability for multihomed systems.
8251: # $user - The name of the user being validated.
8252: # $password - The user's propoposed password.
8253: #
8254: # Returns:
8255: # 1 - The domain,user,pasword triplet corresponds to a valid
8256: # user.
8257: # 0 - The domain,user,password triplet is not a valid user.
8258: #
8259: sub validate_user {
1.396 raeburn 8260: my ($domain, $user, $password, $checkdefauth) = @_;
1.220 foxr 8261:
8262: # Why negative ~pi you may well ask? Well this function is about
8263: # authentication, and therefore very important to get right.
8264: # I've initialized the flag that determines whether or not I've
8265: # validated correctly to a value it's not supposed to get.
8266: # At the end of this function. I'll ensure that it's not still that
8267: # value so we don't just wind up returning some accidental value
8268: # as a result of executing an unforseen code path that
1.249 foxr 8269: # did not set $validated. At the end of valid execution paths,
8270: # validated shoule be 1 for success or 0 for failuer.
1.220 foxr 8271:
8272: my $validated = -3.14159;
8273:
8274: # How we authenticate is determined by the type of authentication
8275: # the user has been assigned. If the authentication type is
8276: # "nouser", the user does not exist so we will return 0.
8277:
1.222 foxr 8278: my $contents = &get_auth_type($domain, $user);
1.220 foxr 8279: my ($howpwd, $contentpwd) = split(/:/, $contents);
8280:
8281: my $null = pack("C",0); # Used by kerberos auth types.
8282:
1.395 raeburn 8283: if ($howpwd eq 'nouser') {
1.396 raeburn 8284: if ($checkdefauth) {
8285: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
8286: if ($domdefaults{'auth_def'} eq 'localauth') {
8287: $howpwd = $domdefaults{'auth_def'};
8288: $contentpwd = $domdefaults{'auth_arg_def'};
8289: } elsif ((($domdefaults{'auth_def'} eq 'krb4') ||
8290: ($domdefaults{'auth_def'} eq 'krb5')) &&
8291: ($domdefaults{'auth_arg_def'} ne '')) {
8292: $howpwd = $domdefaults{'auth_def'};
8293: $contentpwd = $domdefaults{'auth_arg_def'};
8294: }
1.395 raeburn 8295: }
1.533 raeburn 8296: }
1.220 foxr 8297: if ($howpwd ne 'nouser') {
8298: if($howpwd eq "internal") { # Encrypted is in local password file.
1.518 raeburn 8299: if (length($contentpwd) == 13) {
8300: $validated = (crypt($password,$contentpwd) eq $contentpwd);
8301: if ($validated) {
1.533 raeburn 8302: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
8303: if ($domdefaults{'intauth_switch'}) {
8304: my $ncpass = &hash_passwd($domain,$password);
8305: my $saveold;
8306: if ($domdefaults{'intauth_switch'} == 2) {
8307: $saveold = 1;
8308: }
8309: if (&rewrite_password_file($domain,$user,"$howpwd:$ncpass",$saveold)) {
8310: &update_passwd_history($user,$domain,$howpwd,'conversion');
8311: &logthis("Validated password hashed with bcrypt for $user:$domain");
8312: }
1.518 raeburn 8313: }
8314: }
8315: } else {
1.533 raeburn 8316: $validated = &check_internal_passwd($password,$contentpwd,$domain,$user);
1.518 raeburn 8317: }
1.220 foxr 8318: }
8319: elsif ($howpwd eq "unix") { # User is a normal unix user.
8320: $contentpwd = (getpwnam($user))[1];
8321: if($contentpwd) {
8322: if($contentpwd eq 'x') { # Shadow password file...
8323: my $pwauth_path = "/usr/local/sbin/pwauth";
8324: open PWAUTH, "|$pwauth_path" or
8325: die "Cannot invoke authentication";
8326: print PWAUTH "$user\n$password\n";
8327: close PWAUTH;
8328: $validated = ! $?;
8329:
8330: } else { # Passwords in /etc/passwd.
8331: $validated = (crypt($password,
8332: $contentpwd) eq $contentpwd);
8333: }
8334: } else {
8335: $validated = 0;
8336: }
1.439 raeburn 8337: } elsif ($howpwd eq "krb4") { # user is in kerberos 4 auth. domain.
8338: my $checkwithkrb5 = 0;
8339: if ($dist =~/^fedora(\d+)$/) {
8340: if ($1 > 11) {
8341: $checkwithkrb5 = 1;
8342: }
8343: } elsif ($dist =~ /^suse([\d.]+)$/) {
8344: if ($1 > 11.1) {
8345: $checkwithkrb5 = 1;
8346: }
8347: }
8348: if ($checkwithkrb5) {
8349: $validated = &krb5_authen($password,$null,$user,$contentpwd);
8350: } else {
8351: $validated = &krb4_authen($password,$null,$user,$contentpwd);
8352: }
1.224 foxr 8353: } elsif ($howpwd eq "krb5") { # User is in kerberos 5 auth. domain.
1.439 raeburn 8354: $validated = &krb5_authen($password,$null,$user,$contentpwd);
1.224 foxr 8355: } elsif ($howpwd eq "localauth") {
1.220 foxr 8356: # Authenticate via installation specific authentcation method:
8357: $validated = &localauth::localauth($user,
8358: $password,
1.353 albertel 8359: $contentpwd,
8360: $domain);
1.358 albertel 8361: if ($validated < 0) {
1.357 albertel 8362: &logthis("localauth for $contentpwd $user:$domain returned a $validated");
8363: $validated = 0;
8364: }
1.224 foxr 8365: } else { # Unrecognized auth is also bad.
1.220 foxr 8366: $validated = 0;
8367: }
8368: } else {
8369: $validated = 0;
8370: }
8371: #
8372: # $validated has the correct stat of the authentication:
8373: #
8374:
8375: unless ($validated != -3.14159) {
1.249 foxr 8376: # I >really really< want to know if this happens.
8377: # since it indicates that user authentication is badly
8378: # broken in some code path.
8379: #
8380: die "ValidateUser - failed to set the value of validated $domain, $user $password";
1.220 foxr 8381: }
8382: return $validated;
8383: }
8384:
1.518 raeburn 8385: sub check_internal_passwd {
1.533 raeburn 8386: my ($plainpass,$stored,$domain,$user) = @_;
1.518 raeburn 8387: my (undef,$method,@rest) = split(/!/,$stored);
1.533 raeburn 8388: if ($method eq 'bcrypt') {
1.518 raeburn 8389: my $result = &hash_passwd($domain,$plainpass,@rest);
8390: if ($result ne $stored) {
8391: return 0;
8392: }
1.533 raeburn 8393: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
8394: if ($domdefaults{'intauth_check'}) {
8395: # Upgrade to a larger number of rounds if necessary
8396: my $defaultcost = $domdefaults{'intauth_cost'};
8397: if (($defaultcost eq '') || ($defaultcost =~ /D/)) {
8398: $defaultcost = 10;
8399: }
8400: if (int($rest[0])<int($defaultcost)) {
8401: if ($domdefaults{'intauth_check'} == 1) {
8402: my $ncpass = &hash_passwd($domain,$plainpass);
8403: if (&rewrite_password_file($domain,$user,"internal:$ncpass")) {
8404: &update_passwd_history($user,$domain,'internal','update cost');
8405: &logthis("Validated password hashed with bcrypt for $user:$domain");
8406: }
8407: return 1;
8408: } elsif ($domdefaults{'intauth_check'} == 2) {
8409: return 0;
8410: }
8411: }
8412: } else {
8413: return 1;
1.518 raeburn 8414: }
8415: }
8416: return 0;
8417: }
8418:
8419: sub get_last_authchg {
8420: my ($domain,$user) = @_;
8421: my $lastmod;
8422: my $logname = &propath($domain,$user).'/passwd.log';
8423: if (-e "$logname") {
8424: $lastmod = (stat("$logname"))[9];
8425: }
8426: return $lastmod;
8427: }
8428:
1.439 raeburn 8429: sub krb4_authen {
8430: my ($password,$null,$user,$contentpwd) = @_;
8431: my $validated = 0;
8432: if (!($password =~ /$null/) ) { # Null password not allowed.
8433: eval {
8434: require Authen::Krb4;
8435: };
8436: if (!$@) {
8437: my $k4error = &Authen::Krb4::get_pw_in_tkt($user,
8438: "",
8439: $contentpwd,,
8440: 'krbtgt',
8441: $contentpwd,
8442: 1,
8443: $password);
8444: if(!$k4error) {
8445: $validated = 1;
8446: } else {
8447: $validated = 0;
8448: &logthis('krb4: '.$user.', '.$contentpwd.', '.
8449: &Authen::Krb4::get_err_txt($Authen::Krb4::error));
8450: }
8451: } else {
8452: $validated = krb5_authen($password,$null,$user,$contentpwd);
8453: }
8454: }
8455: return $validated;
8456: }
8457:
8458: sub krb5_authen {
8459: my ($password,$null,$user,$contentpwd) = @_;
8460: my $validated = 0;
8461: if(!($password =~ /$null/)) { # Null password not allowed.
8462: my $krbclient = &Authen::Krb5::parse_name($user.'@'
8463: .$contentpwd);
8464: my $krbservice = "krbtgt/".$contentpwd."\@".$contentpwd;
8465: my $krbserver = &Authen::Krb5::parse_name($krbservice);
8466: my $credentials= &Authen::Krb5::cc_default();
8467: $credentials->initialize(&Authen::Krb5::parse_name($user.'@'
8468: .$contentpwd));
8469: my $krbreturn;
8470: if (exists(&Authen::Krb5::get_init_creds_password)) {
8471: $krbreturn =
8472: &Authen::Krb5::get_init_creds_password($krbclient,$password,
8473: $krbservice);
8474: $validated = (ref($krbreturn) eq 'Authen::Krb5::Creds');
8475: } else {
8476: $krbreturn =
8477: &Authen::Krb5::get_in_tkt_with_password($krbclient,$krbserver,
8478: $password,$credentials);
8479: $validated = ($krbreturn == 1);
8480: }
8481: if (!$validated) {
8482: &logthis('krb5: '.$user.', '.$contentpwd.', '.
8483: &Authen::Krb5::error());
8484: }
8485: }
8486: return $validated;
8487: }
1.220 foxr 8488:
1.84 albertel 8489: sub addline {
8490: my ($fname,$hostid,$ip,$newline)=@_;
8491: my $contents;
8492: my $found=0;
1.355 albertel 8493: my $expr='^'.quotemeta($hostid).':'.quotemeta($ip).':';
1.134 albertel 8494: my $sh;
1.84 albertel 8495: if ($sh=IO::File->new("$fname.subscription")) {
8496: while (my $subline=<$sh>) {
8497: if ($subline !~ /$expr/) {$contents.= $subline;} else {$found=1;}
8498: }
8499: $sh->close();
8500: }
8501: $sh=IO::File->new(">$fname.subscription");
8502: if ($contents) { print $sh $contents; }
8503: if ($newline) { print $sh $newline; }
8504: $sh->close();
8505: return $found;
1.86 www 8506: }
8507:
1.234 foxr 8508: sub get_chat {
1.324 raeburn 8509: my ($cdom,$cname,$udom,$uname,$group)=@_;
1.310 albertel 8510:
1.87 www 8511: my @entries=();
1.324 raeburn 8512: my $namespace = 'nohist_chatroom';
8513: my $namespace_inroom = 'nohist_inchatroom';
1.335 albertel 8514: if ($group ne '') {
1.324 raeburn 8515: $namespace .= '_'.$group;
8516: $namespace_inroom .= '_'.$group;
8517: }
8518: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 8519: &GDBM_READER());
8520: if ($hashref) {
8521: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.311 albertel 8522: &untie_user_hash($hashref);
1.123 www 8523: }
1.124 www 8524: my @participants=();
1.134 albertel 8525: my $cutoff=time-60;
1.324 raeburn 8526: $hashref = &tie_user_hash($cdom, $cname, $namespace_inroom,
1.310 albertel 8527: &GDBM_WRCREAT());
8528: if ($hashref) {
8529: $hashref->{$uname.':'.$udom}=time;
8530: foreach my $user (sort(keys(%$hashref))) {
8531: if ($hashref->{$user}>$cutoff) {
8532: push(@participants, 'active_participant:'.$user);
1.123 www 8533: }
8534: }
1.311 albertel 8535: &untie_user_hash($hashref);
1.86 www 8536: }
1.124 www 8537: return (@participants,@entries);
1.86 www 8538: }
8539:
1.234 foxr 8540: sub chat_add {
1.324 raeburn 8541: my ($cdom,$cname,$newchat,$group)=@_;
1.88 albertel 8542: my @entries=();
1.142 www 8543: my $time=time;
1.324 raeburn 8544: my $namespace = 'nohist_chatroom';
8545: my $logfile = 'chatroom.log';
1.335 albertel 8546: if ($group ne '') {
1.324 raeburn 8547: $namespace .= '_'.$group;
8548: $logfile = 'chatroom_'.$group.'.log';
8549: }
8550: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 8551: &GDBM_WRCREAT());
8552: if ($hashref) {
8553: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.88 albertel 8554: my ($lastid)=($entries[$#entries]=~/^(\w+)\:/);
8555: my ($thentime,$idnum)=split(/\_/,$lastid);
8556: my $newid=$time.'_000000';
8557: if ($thentime==$time) {
8558: $idnum=~s/^0+//;
8559: $idnum++;
8560: $idnum=substr('000000'.$idnum,-6,6);
8561: $newid=$time.'_'.$idnum;
8562: }
1.310 albertel 8563: $hashref->{$newid}=$newchat;
1.88 albertel 8564: my $expired=$time-3600;
1.310 albertel 8565: foreach my $comment (keys(%$hashref)) {
8566: my ($thistime) = ($comment=~/(\d+)\_/);
1.88 albertel 8567: if ($thistime<$expired) {
1.310 albertel 8568: delete $hashref->{$comment};
1.88 albertel 8569: }
8570: }
1.310 albertel 8571: {
8572: my $proname=&propath($cdom,$cname);
1.324 raeburn 8573: if (open(CHATLOG,">>$proname/$logfile")) {
1.310 albertel 8574: print CHATLOG ("$time:".&unescape($newchat)."\n");
8575: }
8576: close(CHATLOG);
1.142 www 8577: }
1.311 albertel 8578: &untie_user_hash($hashref);
1.86 www 8579: }
1.84 albertel 8580: }
8581:
8582: sub unsub {
8583: my ($fname,$clientip)=@_;
8584: my $result;
1.188 foxr 8585: my $unsubs = 0; # Number of successful unsubscribes:
8586:
8587:
8588: # An old way subscriptions were handled was to have a
8589: # subscription marker file:
8590:
8591: Debug("Attempting unlink of $fname.$clientname");
1.161 foxr 8592: if (unlink("$fname.$clientname")) {
1.188 foxr 8593: $unsubs++; # Successful unsub via marker file.
8594: }
8595:
8596: # The more modern way to do it is to have a subscription list
8597: # file:
8598:
1.84 albertel 8599: if (-e "$fname.subscription") {
1.161 foxr 8600: my $found=&addline($fname,$clientname,$clientip,'');
1.188 foxr 8601: if ($found) {
8602: $unsubs++;
8603: }
8604: }
8605:
8606: # If either or both of these mechanisms succeeded in unsubscribing a
8607: # resource we can return ok:
8608:
8609: if($unsubs) {
8610: $result = "ok\n";
1.84 albertel 8611: } else {
1.188 foxr 8612: $result = "not_subscribed\n";
1.84 albertel 8613: }
1.188 foxr 8614:
1.84 albertel 8615: return $result;
8616: }
8617:
1.101 www 8618: sub currentversion {
8619: my $fname=shift;
8620: my $version=-1;
8621: my $ulsdir='';
8622: if ($fname=~/^(.+)\/[^\/]+$/) {
8623: $ulsdir=$1;
8624: }
1.114 albertel 8625: my ($fnamere1,$fnamere2);
8626: # remove version if already specified
1.101 www 8627: $fname=~s/\.\d+\.(\w+(?:\.meta)*)$/\.$1/;
1.114 albertel 8628: # get the bits that go before and after the version number
8629: if ( $fname=~/^(.*\.)(\w+(?:\.meta)*)$/ ) {
8630: $fnamere1=$1;
8631: $fnamere2='.'.$2;
8632: }
1.101 www 8633: if (-e $fname) { $version=1; }
8634: if (-e $ulsdir) {
1.134 albertel 8635: if(-d $ulsdir) {
8636: if (opendir(LSDIR,$ulsdir)) {
8637: my $ulsfn;
8638: while ($ulsfn=readdir(LSDIR)) {
1.101 www 8639: # see if this is a regular file (ignore links produced earlier)
1.134 albertel 8640: my $thisfile=$ulsdir.'/'.$ulsfn;
8641: unless (-l $thisfile) {
1.160 www 8642: if ($thisfile=~/\Q$fnamere1\E(\d+)\Q$fnamere2\E$/) {
1.134 albertel 8643: if ($1>$version) { $version=$1; }
8644: }
8645: }
8646: }
8647: closedir(LSDIR);
8648: $version++;
8649: }
8650: }
8651: }
8652: return $version;
1.101 www 8653: }
8654:
8655: sub thisversion {
8656: my $fname=shift;
8657: my $version=-1;
8658: if ($fname=~/\.(\d+)\.\w+(?:\.meta)*$/) {
8659: $version=$1;
8660: }
8661: return $version;
8662: }
8663:
1.84 albertel 8664: sub subscribe {
8665: my ($userinput,$clientip)=@_;
8666: my $result;
1.293 albertel 8667: my ($cmd,$fname)=split(/:/,$userinput,2);
1.84 albertel 8668: my $ownership=&ishome($fname);
8669: if ($ownership eq 'owner') {
1.101 www 8670: # explitly asking for the current version?
8671: unless (-e $fname) {
8672: my $currentversion=¤tversion($fname);
8673: if (&thisversion($fname)==$currentversion) {
8674: if ($fname=~/^(.+)\.\d+\.(\w+(?:\.meta)*)$/) {
8675: my $root=$1;
8676: my $extension=$2;
8677: symlink($root.'.'.$extension,
8678: $root.'.'.$currentversion.'.'.$extension);
1.102 www 8679: unless ($extension=~/\.meta$/) {
8680: symlink($root.'.'.$extension.'.meta',
8681: $root.'.'.$currentversion.'.'.$extension.'.meta');
8682: }
1.101 www 8683: }
8684: }
8685: }
1.84 albertel 8686: if (-e $fname) {
8687: if (-d $fname) {
8688: $result="directory\n";
8689: } else {
1.161 foxr 8690: if (-e "$fname.$clientname") {&unsub($fname,$clientip);}
1.134 albertel 8691: my $now=time;
1.161 foxr 8692: my $found=&addline($fname,$clientname,$clientip,
8693: "$clientname:$clientip:$now\n");
1.84 albertel 8694: if ($found) { $result="$fname\n"; }
8695: # if they were subscribed to only meta data, delete that
8696: # subscription, when you subscribe to a file you also get
8697: # the metadata
8698: unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); }
8699: $fname=~s/\/home\/httpd\/html\/res/raw/;
1.476 raeburn 8700: my $protocol = $Apache::lonnet::protocol{$perlvar{'lonHostID'}};
8701: $protocol = 'http' if ($protocol ne 'https');
8702: $fname=$protocol.'://'.&Apache::lonnet::hostname($perlvar{'lonHostID'})."/".$fname;
1.84 albertel 8703: $result="$fname\n";
8704: }
8705: } else {
8706: $result="not_found\n";
8707: }
8708: } else {
8709: $result="rejected\n";
8710: }
8711: return $result;
8712: }
1.287 foxr 8713: # Change the passwd of a unix user. The caller must have
8714: # first verified that the user is a loncapa user.
8715: #
8716: # Parameters:
8717: # user - Unix user name to change.
8718: # pass - New password for the user.
8719: # Returns:
8720: # ok - if success
8721: # other - Some meaningfule error message string.
8722: # NOTE:
8723: # invokes a setuid script to change the passwd.
8724: sub change_unix_password {
8725: my ($user, $pass) = @_;
8726:
8727: &Debug("change_unix_password");
8728: my $execdir=$perlvar{'lonDaemons'};
8729: &Debug("Opening lcpasswd pipeline");
8730: my $pf = IO::File->new("|$execdir/lcpasswd > "
8731: ."$perlvar{'lonDaemons'}"
8732: ."/logs/lcpasswd.log");
8733: print $pf "$user\n$pass\n$pass\n";
8734: close $pf;
8735: my $err = $?;
8736: return ($err < @passwderrors) ? $passwderrors[$err] :
8737: "pwchange_falure - unknown error";
8738:
8739:
8740: }
8741:
1.91 albertel 8742:
8743: sub make_passwd_file {
1.518 raeburn 8744: my ($uname,$udom,$umode,$npass,$passfilename,$action)=@_;
1.390 raeburn 8745: my $result="ok";
1.91 albertel 8746: if ($umode eq 'krb4' or $umode eq 'krb5') {
8747: {
8748: my $pf = IO::File->new(">$passfilename");
1.261 foxr 8749: if ($pf) {
8750: print $pf "$umode:$npass\n";
1.518 raeburn 8751: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 8752: } else {
8753: $result = "pass_file_failed_error";
8754: }
1.91 albertel 8755: }
8756: } elsif ($umode eq 'internal') {
1.518 raeburn 8757: my $ncpass = &hash_passwd($udom,$npass);
1.91 albertel 8758: {
8759: &Debug("Creating internal auth");
8760: my $pf = IO::File->new(">$passfilename");
1.261 foxr 8761: if($pf) {
1.518 raeburn 8762: print $pf "internal:$ncpass\n";
8763: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 8764: } else {
8765: $result = "pass_file_failed_error";
8766: }
1.91 albertel 8767: }
8768: } elsif ($umode eq 'localauth') {
8769: {
8770: my $pf = IO::File->new(">$passfilename");
1.261 foxr 8771: if($pf) {
8772: print $pf "localauth:$npass\n";
1.524 raeburn 8773: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 8774: } else {
8775: $result = "pass_file_failed_error";
8776: }
1.91 albertel 8777: }
8778: } elsif ($umode eq 'unix') {
1.502 raeburn 8779: &logthis(">>>Attempt to create unix account blocked -- unix auth not available for new users.");
8780: $result="no_new_unix_accounts";
1.91 albertel 8781: } elsif ($umode eq 'none') {
8782: {
1.223 foxr 8783: my $pf = IO::File->new("> $passfilename");
1.261 foxr 8784: if($pf) {
8785: print $pf "none:\n";
8786: } else {
8787: $result = "pass_file_failed_error";
8788: }
1.91 albertel 8789: }
1.543 raeburn 8790: } elsif ($umode eq 'lti') {
8791: my $pf = IO::File->new(">$passfilename");
8792: if($pf) {
8793: print $pf "lti:\n";
8794: &update_passwd_history($uname,$udom,$umode,$action);
8795: } else {
8796: $result = "pass_file_failed_error";
8797: }
1.91 albertel 8798: } else {
1.390 raeburn 8799: $result="auth_mode_error";
1.91 albertel 8800: }
8801: return $result;
1.121 albertel 8802: }
8803:
1.265 albertel 8804: sub convert_photo {
8805: my ($start,$dest)=@_;
8806: system("convert $start $dest");
8807: }
8808:
1.121 albertel 8809: sub sethost {
8810: my ($remotereq) = @_;
8811: my (undef,$hostid)=split(/:/,$remotereq);
1.322 albertel 8812: # ignore sethost if we are already correct
8813: if ($hostid eq $currenthostid) {
8814: return 'ok';
8815: }
8816:
1.121 albertel 8817: if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; }
1.368 albertel 8818: if (&Apache::lonnet::get_host_ip($perlvar{'lonHostID'})
8819: eq &Apache::lonnet::get_host_ip($hostid)) {
1.200 matthew 8820: $currenthostid =$hostid;
1.369 albertel 8821: $currentdomainid=&Apache::lonnet::host_domain($hostid);
1.556 raeburn 8822: &set_client_info();
1.443 www 8823: # &logthis("Setting hostid to $hostid, and domain to $currentdomainid");
1.121 albertel 8824: } else {
8825: &logthis("Requested host id $hostid not an alias of ".
8826: $perlvar{'lonHostID'}." refusing connection");
8827: return 'unable_to_set';
8828: }
8829: return 'ok';
8830: }
8831:
8832: sub version {
8833: my ($userinput)=@_;
8834: $remoteVERSION=(split(/:/,$userinput))[1];
8835: return "version:$VERSION";
1.127 albertel 8836: }
1.178 foxr 8837:
1.447 raeburn 8838: sub get_usersession_config {
8839: my ($dom,$name) = @_;
8840: my ($usersessionconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
8841: if (defined($cached)) {
8842: return $usersessionconf;
8843: } else {
8844: my %domconfig = &Apache::lonnet::get_dom('configuration',['usersessions'],$dom);
1.525 raeburn 8845: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'usersessions'},3600);
8846: return $domconfig{'usersessions'};
1.447 raeburn 8847: }
8848: return;
8849: }
1.200 matthew 8850:
1.534 raeburn 8851: sub get_usersearch_config {
8852: my ($dom,$name) = @_;
8853: my ($usersearchconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
8854: if (defined($cached)) {
8855: return $usersearchconf;
8856: } else {
8857: my %domconfig = &Apache::lonnet::get_dom('configuration',['directorysrch'],$dom);
8858: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'directorysrch'},600);
8859: return $domconfig{'directorysrch'};
8860: }
8861: return;
8862: }
8863:
1.525 raeburn 8864: sub get_prohibited {
8865: my ($dom) = @_;
8866: my $name = 'trust';
8867: my ($trustconfig,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
8868: unless (defined($cached)) {
8869: my %domconfig = &Apache::lonnet::get_dom('configuration',['trust'],$dom);
8870: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'trust'},3600);
8871: $trustconfig = $domconfig{'trust'};
8872: }
8873: my %prohibited;
8874: if (ref($trustconfig)) {
8875: foreach my $prefix (keys(%{$trustconfig})) {
8876: if (ref($trustconfig->{$prefix}) eq 'HASH') {
8877: my $reject;
8878: if (ref($trustconfig->{$prefix}->{'exc'}) eq 'ARRAY') {
8879: if (grep(/^\Q$clientintdom\E$/,@{$trustconfig->{$prefix}->{'exc'}})) {
8880: $reject = 1;
8881: }
8882: }
8883: if (ref($trustconfig->{$prefix}->{'inc'}) eq 'ARRAY') {
8884: if (grep(/^\Q$clientintdom\E$/,@{$trustconfig->{$prefix}->{'inc'}})) {
8885: $reject = 0;
8886: } else {
8887: $reject = 1;
8888: }
8889: }
8890: if ($reject) {
8891: $prohibited{$prefix} = 1;
8892: }
8893: }
8894: }
8895: }
8896: return %prohibited;
8897: }
1.450 raeburn 8898:
1.556 raeburn 8899: sub get_remote_hostable {
8900: my ($dom) = @_;
8901: my $result;
8902: if ($clientintdom) {
8903: $result = 1;
8904: my $remsessconf = &get_usersession_config($dom,'remotesession');
8905: if (ref($remsessconf) eq 'HASH') {
8906: if (ref($remsessconf->{'remote'}) eq 'HASH') {
8907: if (ref($remsessconf->{'remote'}->{'excludedomain'}) eq 'ARRAY') {
8908: if (grep(/^\Q$clientintdom\E$/,@{$remsessconf->{'remote'}->{'excludedomain'}})) {
8909: $result = 0;
8910: }
8911: }
8912: if (ref($remsessconf->{'remote'}->{'includedomain'}) eq 'ARRAY') {
8913: if (grep(/^\Q$clientintdom\E$/,@{$remsessconf->{'remote'}->{'includedomain'}})) {
8914: $result = 1;
8915: } else {
8916: $result = 0;
8917: }
8918: }
8919: }
8920: }
8921: }
8922: return $result;
8923: }
8924:
1.471 raeburn 8925: sub distro_and_arch {
8926: return $dist.':'.$arch;
8927: }
8928:
1.61 harris41 8929: # ----------------------------------- POD (plain old documentation, CPAN style)
8930:
8931: =head1 NAME
8932:
8933: lond - "LON Daemon" Server (port "LOND" 5663)
8934:
8935: =head1 SYNOPSIS
8936:
1.74 harris41 8937: Usage: B<lond>
8938:
8939: Should only be run as user=www. This is a command-line script which
8940: is invoked by B<loncron>. There is no expectation that a typical user
8941: will manually start B<lond> from the command-line. (In other words,
8942: DO NOT START B<lond> YOURSELF.)
1.61 harris41 8943:
8944: =head1 DESCRIPTION
8945:
1.74 harris41 8946: There are two characteristics associated with the running of B<lond>,
8947: PROCESS MANAGEMENT (starting, stopping, handling child processes)
8948: and SERVER-SIDE ACTIVITIES (password authentication, user creation,
8949: subscriptions, etc). These are described in two large
8950: sections below.
8951:
8952: B<PROCESS MANAGEMENT>
8953:
1.61 harris41 8954: Preforker - server who forks first. Runs as a daemon. HUPs.
8955: Uses IDEA encryption
8956:
1.74 harris41 8957: B<lond> forks off children processes that correspond to the other servers
8958: in the network. Management of these processes can be done at the
8959: parent process level or the child process level.
8960:
8961: B<logs/lond.log> is the location of log messages.
8962:
8963: The process management is now explained in terms of linux shell commands,
8964: subroutines internal to this code, and signal assignments:
8965:
8966: =over 4
8967:
8968: =item *
8969:
8970: PID is stored in B<logs/lond.pid>
8971:
8972: This is the process id number of the parent B<lond> process.
8973:
8974: =item *
8975:
8976: SIGTERM and SIGINT
8977:
8978: Parent signal assignment:
8979: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
8980:
8981: Child signal assignment:
8982: $SIG{INT} = 'DEFAULT'; (and SIGTERM is DEFAULT also)
8983: (The child dies and a SIGALRM is sent to parent, awaking parent from slumber
8984: to restart a new child.)
8985:
8986: Command-line invocations:
8987: B<kill> B<-s> SIGTERM I<PID>
8988: B<kill> B<-s> SIGINT I<PID>
8989:
8990: Subroutine B<HUNTSMAN>:
8991: This is only invoked for the B<lond> parent I<PID>.
8992: This kills all the children, and then the parent.
8993: The B<lonc.pid> file is cleared.
8994:
8995: =item *
8996:
8997: SIGHUP
8998:
8999: Current bug:
9000: This signal can only be processed the first time
9001: on the parent process. Subsequent SIGHUP signals
9002: have no effect.
9003:
9004: Parent signal assignment:
9005: $SIG{HUP} = \&HUPSMAN;
9006:
9007: Child signal assignment:
9008: none (nothing happens)
9009:
9010: Command-line invocations:
9011: B<kill> B<-s> SIGHUP I<PID>
9012:
9013: Subroutine B<HUPSMAN>:
9014: This is only invoked for the B<lond> parent I<PID>,
9015: This kills all the children, and then the parent.
9016: The B<lond.pid> file is cleared.
9017:
9018: =item *
9019:
9020: SIGUSR1
9021:
9022: Parent signal assignment:
9023: $SIG{USR1} = \&USRMAN;
9024:
9025: Child signal assignment:
9026: $SIG{USR1}= \&logstatus;
9027:
9028: Command-line invocations:
9029: B<kill> B<-s> SIGUSR1 I<PID>
9030:
9031: Subroutine B<USRMAN>:
9032: When invoked for the B<lond> parent I<PID>,
9033: SIGUSR1 is sent to all the children, and the status of
9034: each connection is logged.
1.144 foxr 9035:
9036: =item *
9037:
9038: SIGUSR2
9039:
9040: Parent Signal assignment:
9041: $SIG{USR2} = \&UpdateHosts
9042:
9043: Child signal assignment:
9044: NONE
9045:
1.74 harris41 9046:
9047: =item *
9048:
9049: SIGCHLD
9050:
9051: Parent signal assignment:
9052: $SIG{CHLD} = \&REAPER;
9053:
9054: Child signal assignment:
9055: none
9056:
9057: Command-line invocations:
9058: B<kill> B<-s> SIGCHLD I<PID>
9059:
9060: Subroutine B<REAPER>:
9061: This is only invoked for the B<lond> parent I<PID>.
9062: Information pertaining to the child is removed.
9063: The socket port is cleaned up.
9064:
9065: =back
9066:
9067: B<SERVER-SIDE ACTIVITIES>
9068:
9069: Server-side information can be accepted in an encrypted or non-encrypted
9070: method.
9071:
9072: =over 4
9073:
9074: =item ping
9075:
9076: Query a client in the hosts.tab table; "Are you there?"
9077:
9078: =item pong
9079:
9080: Respond to a ping query.
9081:
9082: =item ekey
9083:
9084: Read in encrypted key, make cipher. Respond with a buildkey.
9085:
9086: =item load
9087:
9088: Respond with CPU load based on a computation upon /proc/loadavg.
9089:
9090: =item currentauth
9091:
9092: Reply with current authentication information (only over an
9093: encrypted channel).
9094:
9095: =item auth
9096:
9097: Only over an encrypted channel, reply as to whether a user's
9098: authentication information can be validated.
9099:
9100: =item passwd
9101:
9102: Allow for a password to be set.
9103:
9104: =item makeuser
9105:
9106: Make a user.
9107:
1.517 raeburn 9108: =item changeuserauth
1.74 harris41 9109:
9110: Allow for authentication mechanism and password to be changed.
9111:
9112: =item home
1.61 harris41 9113:
1.74 harris41 9114: Respond to a question "are you the home for a given user?"
9115:
9116: =item update
9117:
9118: Update contents of a subscribed resource.
9119:
9120: =item unsubscribe
9121:
9122: The server is unsubscribing from a resource.
9123:
9124: =item subscribe
9125:
9126: The server is subscribing to a resource.
9127:
9128: =item log
9129:
9130: Place in B<logs/lond.log>
9131:
9132: =item put
9133:
9134: stores hash in namespace
9135:
1.496 raeburn 9136: =item rolesput
1.74 harris41 9137:
9138: put a role into a user's environment
9139:
9140: =item get
9141:
9142: returns hash with keys from array
9143: reference filled in from namespace
9144:
9145: =item eget
9146:
9147: returns hash with keys from array
9148: reference filled in from namesp (encrypts the return communication)
9149:
9150: =item rolesget
9151:
9152: get a role from a user's environment
9153:
9154: =item del
9155:
9156: deletes keys out of array from namespace
9157:
9158: =item keys
9159:
9160: returns namespace keys
9161:
9162: =item dump
9163:
9164: dumps the complete (or key matching regexp) namespace into a hash
9165:
9166: =item store
9167:
9168: stores hash permanently
9169: for this url; hashref needs to be given and should be a \%hashname; the
9170: remaining args aren't required and if they aren't passed or are '' they will
9171: be derived from the ENV
9172:
9173: =item restore
9174:
9175: returns a hash for a given url
9176:
9177: =item querysend
9178:
9179: Tells client about the lonsql process that has been launched in response
9180: to a sent query.
9181:
9182: =item queryreply
9183:
9184: Accept information from lonsql and make appropriate storage in temporary
9185: file space.
9186:
9187: =item idput
9188:
9189: Defines usernames as corresponding to IDs. (These "IDs" are unique identifiers
9190: for each student, defined perhaps by the institutional Registrar.)
9191:
9192: =item idget
9193:
9194: Returns usernames corresponding to IDs. (These "IDs" are unique identifiers
9195: for each student, defined perhaps by the institutional Registrar.)
9196:
1.517 raeburn 9197: =item iddel
9198:
9199: Deletes one or more ids in a domain's id database.
9200:
1.74 harris41 9201: =item tmpput
9202:
9203: Accept and store information in temporary space.
9204:
9205: =item tmpget
9206:
9207: Send along temporarily stored information.
9208:
9209: =item ls
9210:
9211: List part of a user's directory.
9212:
1.135 foxr 9213: =item pushtable
9214:
9215: Pushes a file in /home/httpd/lonTab directory. Currently limited to:
9216: hosts.tab and domain.tab. The old file is copied to *.tab.backup but
9217: must be restored manually in case of a problem with the new table file.
9218: pushtable requires that the request be encrypted and validated via
9219: ValidateManager. The form of the command is:
9220: enc:pushtable tablename <tablecontents> \n
9221: where pushtable, tablename and <tablecontents> will be encrypted, but \n is a
9222: cleartext newline.
9223:
1.74 harris41 9224: =item Hanging up (exit or init)
9225:
9226: What to do when a client tells the server that they (the client)
9227: are leaving the network.
9228:
9229: =item unknown command
9230:
9231: If B<lond> is sent an unknown command (not in the list above),
9232: it replys to the client "unknown_cmd".
1.135 foxr 9233:
1.74 harris41 9234:
9235: =item UNKNOWN CLIENT
9236:
9237: If the anti-spoofing algorithm cannot verify the client,
9238: the client is rejected (with a "refused" message sent
9239: to the client, and the connection is closed.
9240:
9241: =back
1.61 harris41 9242:
9243: =head1 PREREQUISITES
9244:
9245: IO::Socket
9246: IO::File
9247: Apache::File
9248: POSIX
9249: Crypt::IDEA
9250: GDBM_File
9251: Authen::Krb4
1.91 albertel 9252: Authen::Krb5
1.61 harris41 9253:
9254: =head1 COREQUISITES
9255:
1.490 droeschl 9256: none
9257:
1.61 harris41 9258: =head1 OSNAMES
9259:
9260: linux
9261:
9262: =head1 SCRIPT CATEGORIES
9263:
9264: Server/Process
9265:
9266: =cut
1.409 foxr 9267:
9268:
9269: =pod
9270:
9271: =head1 LOG MESSAGES
9272:
9273: The messages below can be emitted in the lond log. This log is located
9274: in ~httpd/perl/logs/lond.log Many log messages have HTML encapsulation
9275: to provide coloring if examined from inside a web page. Some do not.
9276: Where color is used, the colors are; Red for sometihhng to get excited
9277: about and to follow up on. Yellow for something to keep an eye on to
9278: be sure it does not get worse, Green,and Blue for informational items.
9279:
9280: In the discussions below, sometimes reference is made to ~httpd
9281: when describing file locations. There isn't really an httpd
9282: user, however there is an httpd directory that gets installed in the
9283: place that user home directories go. On linux, this is usually
9284: (always?) /home/httpd.
9285:
9286:
9287: Some messages are colorless. These are usually (not always)
9288: Green/Blue color level messages.
9289:
9290: =over 2
9291:
9292: =item (Red) LocalConnection rejecting non local: <ip> ne 127.0.0.1
9293:
9294: A local connection negotiation was attempted by
9295: a host whose IP address was not 127.0.0.1.
9296: The socket is closed and the child will exit.
9297: lond has three ways to establish an encyrption
9298: key with a client:
9299:
9300: =over 2
9301:
9302: =item local
9303:
9304: The key is written and read from a file.
9305: This is only valid for connections from localhost.
9306:
9307: =item insecure
9308:
9309: The key is generated by the server and
9310: transmitted to the client.
9311:
9312: =item ssl (secure)
9313:
9314: An ssl connection is negotiated with the client,
9315: the key is generated by the server and sent to the
9316: client across this ssl connection before the
9317: ssl connectionis terminated and clear text
9318: transmission resumes.
9319:
9320: =back
9321:
9322: =item (Red) LocalConnection: caller is insane! init = <init> and type = <type>
9323:
9324: The client is local but has not sent an initialization
9325: string that is the literal "init:local" The connection
9326: is closed and the child exits.
9327:
9328: =item Red CRITICAL Can't get key file <error>
9329:
9330: SSL key negotiation is being attempted but the call to
1.549 raeburn 9331: lonssl::KeyFile failed. This usually means that the
1.409 foxr 9332: configuration file is not correctly defining or protecting
9333: the directories/files lonCertificateDirectory or
9334: lonnetPrivateKey
9335: <error> is a string that describes the reason that
9336: the key file could not be located.
9337:
9338: =item (Red) CRITICAL Can't get certificates <error>
9339:
9340: SSL key negotiation failed because we were not able to retrives our certificate
9341: or the CA's certificate in the call to lonssl::CertificateFile
9342: <error> is the textual reason this failed. Usual reasons:
9343:
9344: =over 2
1.490 droeschl 9345:
1.409 foxr 9346: =item Apache config file for loncapa incorrect:
1.490 droeschl 9347:
1.409 foxr 9348: one of the variables
9349: lonCertificateDirectory, lonnetCertificateAuthority, or lonnetCertificate
9350: undefined or incorrect
9351:
9352: =item Permission error:
9353:
9354: The directory pointed to by lonCertificateDirectory is not readable by lond
9355:
9356: =item Permission error:
9357:
9358: Files in the directory pointed to by lonCertificateDirectory are not readable by lond.
9359:
9360: =item Installation error:
9361:
9362: Either the certificate authority file or the certificate have not
9363: been installed in lonCertificateDirectory.
9364:
9365: =item (Red) CRITICAL SSL Socket promotion failed: <err>
9366:
9367: The promotion of the connection from plaintext to SSL failed
9368: <err> is the reason for the failure. There are two
9369: system calls involved in the promotion (one of which failed),
9370: a dup to produce
9371: a second fd on the raw socket over which the encrypted data
9372: will flow and IO::SOcket::SSL->new_from_fd which creates
9373: the SSL connection on the duped fd.
9374:
9375: =item (Blue) WARNING client did not respond to challenge
9376:
9377: This occurs on an insecure (non SSL) connection negotiation request.
9378: lond generates some number from the time, the PID and sends it to
9379: the client. The client must respond by echoing this information back.
9380: If the client does not do so, that's a violation of the challenge
9381: protocols and the connection will be failed.
9382:
9383: =item (Red) No manager table. Nobody can manage!!
9384:
9385: lond has the concept of privileged hosts that
9386: can perform remote management function such
9387: as update the hosts.tab. The manager hosts
9388: are described in the
9389: ~httpd/lonTabs/managers.tab file.
9390: this message is logged if this file is missing.
9391:
9392:
9393: =item (Green) Registering manager <dnsname> as <cluster_name> with <ipaddress>
9394:
9395: Reports the successful parse and registration
9396: of a specific manager.
9397:
9398: =item Green existing host <clustername:dnsname>
9399:
9400: The manager host is already defined in the hosts.tab
9401: the information in that table, rather than the info in the
9402: manager table will be used to determine the manager's ip.
9403:
9404: =item (Red) Unable to craete <filename>
9405:
9406: lond has been asked to create new versions of an administrative
9407: file (by a manager). When this is done, the new file is created
9408: in a temp file and then renamed into place so that there are always
9409: usable administrative files, even if the update fails. This failure
9410: message means that the temp file could not be created.
9411: The update is abandoned, and the old file is available for use.
9412:
9413: =item (Green) CopyFile from <oldname> to <newname> failed
9414:
9415: In an update of administrative files, the copy of the existing file to a
9416: backup file failed. The installation of the new file may still succeed,
9417: but there will not be a back up file to rever to (this should probably
9418: be yellow).
9419:
9420: =item (Green) Pushfile: backed up <oldname> to <newname>
9421:
9422: See above, the backup of the old administrative file succeeded.
9423:
9424: =item (Red) Pushfile: Unable to install <filename> <reason>
9425:
9426: The new administrative file could not be installed. In this case,
9427: the old administrative file is still in use.
9428:
9429: =item (Green) Installed new < filename>.
9430:
9431: The new administrative file was successfullly installed.
9432:
9433: =item (Red) Reinitializing lond pid=<pid>
9434:
9435: The lonc child process <pid> will be sent a USR2
9436: signal.
9437:
9438: =item (Red) Reinitializing self
9439:
9440: We've been asked to re-read our administrative files,and
9441: are doing so.
9442:
9443: =item (Yellow) error:Invalid process identifier <ident>
9444:
9445: A reinit command was received, but the target part of the
9446: command was not valid. It must be either
9447: 'lond' or 'lonc' but was <ident>
9448:
9449: =item (Green) isValideditCommand checking: Command = <command> Key = <key> newline = <newline>
9450:
9451: Checking to see if lond has been handed a valid edit
9452: command. It is possible the edit command is not valid
9453: in that case there are no log messages to indicate that.
9454:
9455: =item Result of password change for <username> pwchange_success
9456:
9457: The password for <username> was
9458: successfully changed.
9459:
9460: =item Unable to open <user> passwd to change password
9461:
9462: Could not rewrite the
9463: internal password file for a user
9464:
9465: =item Result of password change for <user> : <result>
1.490 droeschl 9466:
1.409 foxr 9467: A unix password change for <user> was attempted
9468: and the pipe returned <result>
9469:
9470: =item LWP GET: <message> for <fname> (<remoteurl>)
9471:
9472: The lightweight process fetch for a resource failed
9473: with <message> the local filename that should
9474: have existed/been created was <fname> the
9475: corresponding URI: <remoteurl> This is emitted in several
9476: places.
9477:
9478: =item Unable to move <transname> to <destname>
9479:
9480: From fetch_user_file_handler - the user file was replicated but could not
9481: be mv'd to its final location.
9482:
9483: =item Looking for <domain> <username>
9484:
9485: From user_has_session_handler - This should be a Debug call instead
9486: it indicates lond is about to check whether the specified user has a
9487: session active on the specified domain on the local host.
9488:
9489: =item Client <ip> (<name>) hanging up: <input>
9490:
9491: lond has been asked to exit by its client. The <ip> and <name> identify the
9492: client systemand <input> is the full exit command sent to the server.
9493:
9494: =item Red CRITICAL: ABNORMAL EXIT. child <pid> for server <hostname> died through a crass with this error->[<message>].
1.490 droeschl 9495:
1.409 foxr 9496: A lond child terminated. NOte that this termination can also occur when the
9497: child receives the QUIT or DIE signals. <pid> is the process id of the child,
9498: <hostname> the host lond is working for, and <message> the reason the child died
9499: to the best of our ability to get it (I would guess that any numeric value
9500: represents and errno value). This is immediately followed by
9501:
9502: =item Famous last words: Catching exception - <log>
9503:
9504: Where log is some recent information about the state of the child.
9505:
9506: =item Red CRITICAL: TIME OUT <pid>
9507:
9508: Some timeout occured for server <pid>. THis is normally a timeout on an LWP
9509: doing an HTTP::GET.
9510:
9511: =item child <pid> died
9512:
9513: The reaper caught a SIGCHILD for the lond child process <pid>
9514: This should be modified to also display the IP of the dying child
9515: $children{$pid}
9516:
9517: =item Unknown child 0 died
9518: A child died but the wait for it returned a pid of zero which really should not
9519: ever happen.
9520:
9521: =item Child <which> - <pid> looks like we missed it's death
9522:
9523: When a sigchild is received, the reaper process checks all children to see if they are
9524: alive. If children are dying quite quickly, the lack of signal queuing can mean
9525: that a signal hearalds the death of more than one child. If so this message indicates
9526: which other one died. <which> is the ip of a dead child
9527:
9528: =item Free socket: <shutdownretval>
9529:
9530: The HUNTSMAN sub was called due to a SIGINT in a child process. The socket is being shutdown.
9531: for whatever reason, <shutdownretval> is printed but in fact shutdown() is not documented
9532: to return anything. This is followed by:
9533:
9534: =item Red CRITICAL: Shutting down
9535:
9536: Just prior to exit.
9537:
9538: =item Free socket: <shutdownretval>
9539:
9540: The HUPSMAN sub was called due to a SIGHUP. all children get killsed, and lond execs itself.
9541: This is followed by:
9542:
9543: =item (Red) CRITICAL: Restarting
9544:
9545: lond is about to exec itself to restart.
9546:
9547: =item (Blue) Updating connections
9548:
9549: (In response to a USR2). All the children (except the one for localhost)
9550: are about to be killed, the hosts tab reread, and Apache reloaded via apachereload.
9551:
9552: =item (Blue) UpdateHosts killing child <pid> for ip <ip>
9553:
9554: Due to USR2 as above.
9555:
9556: =item (Green) keeping child for ip <ip> (pid = <pid>)
9557:
9558: In response to USR2 as above, the child indicated is not being restarted because
9559: it's assumed that we'll always need a child for the localhost.
9560:
9561:
9562: =item Going to check on the children
9563:
9564: Parent is about to check on the health of the child processes.
9565: Note that this is in response to a USR1 sent to the parent lond.
9566: there may be one or more of the next two messages:
9567:
9568: =item <pid> is dead
9569:
9570: A child that we have in our child hash as alive has evidently died.
9571:
9572: =item Child <pid> did not respond
9573:
9574: In the health check the child <pid> did not update/produce a pid_.txt
9575: file when sent it's USR1 signal. That process is killed with a 9 signal, as it's
9576: assumed to be hung in some un-fixable way.
9577:
9578: =item Finished checking children
1.490 droeschl 9579:
1.409 foxr 9580: Master processs's USR1 processing is cojmplete.
9581:
9582: =item (Red) CRITICAL: ------- Starting ------
9583:
9584: (There are more '-'s on either side). Lond has forked itself off to
9585: form a new session and is about to start actual initialization.
9586:
9587: =item (Green) Attempting to start child (<client>)
9588:
9589: Started a new child process for <client>. Client is IO::Socket object
9590: connected to the child. This was as a result of a TCP/IP connection from a client.
9591:
9592: =item Unable to determine who caller was, getpeername returned nothing
1.490 droeschl 9593:
1.409 foxr 9594: In child process initialization. either getpeername returned undef or
9595: a zero sized object was returned. Processing continues, but in my opinion,
9596: this should be cause for the child to exit.
9597:
9598: =item Unable to determine clientip
9599:
9600: In child process initialization. The peer address from getpeername was not defined.
9601: The client address is stored as "Unavailable" and processing continues.
9602:
9603: =item (Yellow) INFO: Connection <ip> <name> connection type = <type>
1.490 droeschl 9604:
1.409 foxr 9605: In child initialization. A good connectionw as received from <ip>.
9606:
9607: =over 2
9608:
9609: =item <name>
9610:
9611: is the name of the client from hosts.tab.
9612:
9613: =item <type>
9614:
9615: Is the connection type which is either
9616:
9617: =over 2
9618:
9619: =item manager
9620:
9621: The connection is from a manager node, not in hosts.tab
9622:
9623: =item client
9624:
9625: the connection is from a non-manager in the hosts.tab
9626:
9627: =item both
9628:
9629: The connection is from a manager in the hosts.tab.
9630:
9631: =back
9632:
9633: =back
9634:
9635: =item (Blue) Certificates not installed -- trying insecure auth
9636:
9637: One of the certificate file, key file or
9638: certificate authority file could not be found for a client attempting
9639: SSL connection intiation. COnnection will be attemptied in in-secure mode.
9640: (this would be a system with an up to date lond that has not gotten a
9641: certificate from us).
9642:
9643: =item (Green) Successful local authentication
9644:
9645: A local connection successfully negotiated the encryption key.
9646: In this case the IDEA key is in a file (that is hopefully well protected).
9647:
9648: =item (Green) Successful ssl authentication with <client>
9649:
9650: The client (<client> is the peer's name in hosts.tab), has successfully
9651: negotiated an SSL connection with this child process.
9652:
9653: =item (Green) Successful insecure authentication with <client>
1.490 droeschl 9654:
1.409 foxr 9655:
9656: The client has successfully negotiated an insecure connection withthe child process.
9657:
9658: =item (Yellow) Attempted insecure connection disallowed
9659:
9660: The client attempted and failed to successfully negotiate a successful insecure
9661: connection. This can happen either because the variable londAllowInsecure is false
9662: or undefined, or becuse the child did not successfully echo back the challenge
9663: string.
9664:
9665:
9666: =back
9667:
1.441 raeburn 9668: =back
9669:
1.409 foxr 9670:
9671: =cut
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