Annotation of loncom/lond, revision 1.528
1.1 albertel 1: #!/usr/bin/perl
2: # The LearningOnline Network
3: # lond "LON Daemon" Server (port "LOND" 5663)
1.60 www 4: #
1.528 ! raeburn 5: # $Id: lond,v 1.527 2016/09/20 23:50:09 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:
1.1 albertel 38: use IO::Socket;
39: use IO::File;
1.126 albertel 40: #use Apache::File;
1.1 albertel 41: use POSIX;
42: use Crypt::IDEA;
1.523 raeburn 43: use HTTP::Request;
1.347 raeburn 44: use Digest::MD5 qw(md5_hex);
1.3 www 45: use GDBM_File;
1.91 albertel 46: use Authen::Krb5;
1.49 albertel 47: use localauth;
1.193 raeburn 48: use localenroll;
1.265 albertel 49: use localstudentphoto;
1.143 foxr 50: use File::Copy;
1.292 albertel 51: use File::Find;
1.200 matthew 52: use LONCAPA::lonlocal;
53: use LONCAPA::lonssl;
1.221 albertel 54: use Fcntl qw(:flock);
1.383 raeburn 55: use Apache::lonnet;
1.472 raeburn 56: use Mail::Send;
1.518 raeburn 57: use Crypt::Eksblowfish::Bcrypt;
58: use Digest::SHA;
59: use Encode;
1.523 raeburn 60: use LONCAPA::LWPReq;
1.1 albertel 61:
1.463 foxr 62: my $DEBUG = 0; # Non zero to enable debug log entries.
1.77 foxr 63:
1.57 www 64: my $status='';
65: my $lastlog='';
66:
1.528 ! raeburn 67: my $VERSION='$Revision: 1.527 $'; #' stupid emacs
1.121 albertel 68: my $remoteVERSION;
1.214 foxr 69: my $currenthostid="default";
1.115 albertel 70: my $currentdomainid;
1.134 albertel 71:
72: my $client;
1.200 matthew 73: my $clientip; # IP address of client.
74: my $clientname; # LonCAPA name of client.
1.448 raeburn 75: my $clientversion; # LonCAPA version running on client.
76: my $clienthomedom; # LonCAPA domain of homeID for client.
1.525 raeburn 77: my $clientintdom; # LonCAPA "internet domain" for client.
78: my $clientsameinst; # LonCAPA "internet domain" same for
79: # this host and client.
80: my $clientremoteok; # Client allowed to host domain's users.
81: # (version constraints ignored), not set
82: # if this host and client share "internet domain".
83: my %clientprohibited; # Actions prohibited on client;
84:
1.134 albertel 85: my $server;
1.200 matthew 86:
87: my $keymode;
1.198 foxr 88:
1.207 foxr 89: my $cipher; # Cipher key negotiated with client
90: my $tmpsnum = 0; # Id of tmpputs.
91:
1.178 foxr 92: #
93: # Connection type is:
94: # client - All client actions are allowed
95: # manager - only management functions allowed.
96: # both - Both management and client actions are allowed
97: #
1.161 foxr 98:
1.178 foxr 99: my $ConnectionType;
1.161 foxr 100:
1.178 foxr 101: my %managers; # Ip -> manager names
1.161 foxr 102:
1.178 foxr 103: my %perlvar; # Will have the apache conf defined perl vars.
1.134 albertel 104:
1.480 raeburn 105: my $dist;
106:
1.178 foxr 107: #
1.207 foxr 108: # The hash below is used for command dispatching, and is therefore keyed on the request keyword.
109: # Each element of the hash contains a reference to an array that contains:
110: # A reference to a sub that executes the request corresponding to the keyword.
111: # A flag that is true if the request must be encoded to be acceptable.
112: # A mask with bits as follows:
113: # CLIENT_OK - Set when the function is allowed by ordinary clients
114: # MANAGER_OK - Set when the function is allowed to manager clients.
115: #
116: my $CLIENT_OK = 1;
117: my $MANAGER_OK = 2;
118: my %Dispatcher;
119:
120:
121: #
1.178 foxr 122: # The array below are password error strings."
123: #
124: my $lastpwderror = 13; # Largest error number from lcpasswd.
125: my @passwderrors = ("ok",
1.287 foxr 126: "pwchange_failure - lcpasswd must be run as user 'www'",
127: "pwchange_failure - lcpasswd got incorrect number of arguments",
128: "pwchange_failure - lcpasswd did not get the right nubmer of input text lines",
129: "pwchange_failure - lcpasswd too many simultaneous pwd changes in progress",
130: "pwchange_failure - lcpasswd User does not exist.",
131: "pwchange_failure - lcpasswd Incorrect current passwd",
132: "pwchange_failure - lcpasswd Unable to su to root.",
133: "pwchange_failure - lcpasswd Cannot set new passwd.",
134: "pwchange_failure - lcpasswd Username has invalid characters",
135: "pwchange_failure - lcpasswd Invalid characters in password",
136: "pwchange_failure - lcpasswd User already exists",
137: "pwchange_failure - lcpasswd Something went wrong with user addition.",
138: "pwchange_failure - lcpasswd Password mismatch",
139: "pwchange_failure - lcpasswd Error filename is invalid");
1.97 foxr 140:
141:
1.412 foxr 142: # This array are the errors from lcinstallfile:
143:
144: my @installerrors = ("ok",
145: "Initial user id of client not that of www",
146: "Usage error, not enough command line arguments",
1.500 bisitz 147: "Source filename does not exist",
148: "Destination filename does not exist",
1.412 foxr 149: "Some file operation failed",
150: "Invalid table filename."
151: );
1.207 foxr 152:
153: #
1.525 raeburn 154: # The %trust hash classifies commands according to type of trust
155: # required for execution of the command.
156: #
157: # When clients from a different institution request execution of a
158: # particular command, the trust settings for that institution set
159: # for this domain (or default domain for a multi-domain server) will
160: # be checked to see if running the command is allowed.
161: #
162: # Trust types which depend on the "Trust" domain configuration
163: # for the machine's default domain are:
164: #
165: # content ("Access to this domain's content by others")
166: # shared ("Access to other domain's content by this domain")
167: # enroll ("Enrollment in this domain's courses by others")
168: # coaurem ("Co-author roles for this domain's users elsewhere")
169: # domroles ("Domain roles in this domain assignable to others")
170: # catalog ("Course Catalog for this domain displayed elsewhere")
171: # reqcrs ("Requests for creation of courses in this domain by others")
172: # msg ("Users in other domains can send messages to this domain")
173: #
174: # Trust type which depends on the User Session Hosting (remote)
175: # domain configuration for machine's default domain is: "remote".
176: #
177: # Trust types which depend on contents of manager.tab in
178: # /home/httpd/lonTabs is: "manageronly".
179: #
180: # Trust type which requires client to share the same LON-CAPA
181: # "internet domain" (i.e., same institution as this server) is:
182: # "institutiononly".
183: #
184:
185: my %trust = (
186: auth => {remote => 1},
187: autocreatepassword => {remote => 1},
188: autocrsreqchecks => {remote => 1, reqcrs => 1},
189: autocrsrequpdate => {remote => 1},
190: autocrsreqvalidation => {remote => 1},
191: autogetsections => {remote => 1},
192: autoinstcodedefaults => {remote => 1, catalog => 1},
193: autoinstcodeformat => {remote => 1, catalog => 1},
194: autonewcourse => {remote => 1, reqcrs => 1},
195: autophotocheck => {remote => 1, enroll => 1},
196: autophotochoice => {remote => 1},
197: autophotopermission => {remote => 1, enroll => 1},
198: autopossibleinstcodes => {remote => 1, reqcrs => 1},
199: autoretrieve => {remote => 1, enroll => 1, catalog => 1},
200: autorun => {remote => 1, enroll => 1, reqcrs => 1},
201: autovalidateclass_sec => {catalog => 1},
202: autovalidatecourse => {remote => 1, enroll => 1},
203: autovalidateinstcode => {domroles => 1, remote => 1, enroll => 1},
204: changeuserauth => {remote => 1, domroles => 1},
205: chatretr => {remote => 1, enroll => 1},
206: chatsend => {remote => 1, enroll => 1},
207: courseiddump => {remote => 1, domroles => 1, enroll => 1},
208: courseidput => {remote => 1, domroles => 1, enroll => 1},
209: courseidputhash => {remote => 1, domroles => 1, enroll => 1},
210: courselastaccess => {remote => 1, domroles => 1, enroll => 1},
211: currentauth => {remote => 1, domroles => 1, enroll => 1},
212: currentdump => {remote => 1, enroll => 1},
213: currentversion => {remote=> 1, content => 1},
214: dcmaildump => {remote => 1, domroles => 1},
215: dcmailput => {remote => 1, domroles => 1},
216: del => {remote => 1, domroles => 1, enroll => 1, content => 1},
217: deldom => {remote => 1, domroles => 1}, # not currently used
218: devalidatecache => {institutiononly => 1},
219: domroleput => {remote => 1, enroll => 1},
220: domrolesdump => {remote => 1, catalog => 1},
221: du => {remote => 1, enroll => 1},
222: du2 => {remote => 1, enroll => 1},
223: dump => {remote => 1, enroll => 1, domroles => 1},
224: edit => {institutiononly => 1}, #not used currently
225: eget => {remote => 1, domroles => 1, enroll => 1}, #not used currently
226: ekey => {}, #not used currently
227: exit => {anywhere => 1},
228: fetchuserfile => {remote => 1, enroll => 1},
229: get => {remote => 1, domroles => 1, enroll => 1},
230: getdom => {anywhere => 1},
231: home => {anywhere => 1},
232: iddel => {remote => 1, enroll => 1},
233: idget => {remote => 1, enroll => 1},
234: idput => {remote => 1, domroles => 1, enroll => 1},
235: inc => {remote => 1, enroll => 1},
236: init => {anywhere => 1},
237: inst_usertypes => {remote => 1, domroles => 1, enroll => 1},
238: instemailrules => {remote => 1, domroles => 1},
239: instidrulecheck => {remote => 1, domroles => 1,},
240: instidrules => {remote => 1, domroles => 1,},
241: instrulecheck => {remote => 1, enroll => 1, reqcrs => 1, domroles => 1},
242: instselfcreatecheck => {institutiononly => 1},
243: instuserrules => {remote => 1, enroll => 1, reqcrs => 1, domroles => 1},
244: keys => {remote => 1,},
245: load => {anywhere => 1},
246: log => {anywhere => 1},
247: ls => {remote => 1, enroll => 1, content => 1,},
248: ls2 => {remote => 1, enroll => 1, content => 1,},
249: ls3 => {remote => 1, enroll => 1, content => 1,},
250: makeuser => {remote => 1, enroll => 1, domroles => 1,},
251: mkdiruserfile => {remote => 1, enroll => 1,},
252: newput => {remote => 1, enroll => 1, reqcrs => 1, domroles => 1,},
253: passwd => {remote => 1},
254: ping => {anywhere => 1},
255: pong => {anywhere => 1},
256: pushfile => {manageronly => 1},
257: put => {remote => 1, enroll => 1, domroles => 1, msg => 1, content => 1, shared => 1},
258: putdom => {remote => 1, domroles => 1,},
259: putstore => {remote => 1, enroll => 1},
260: queryreply => {anywhere => 1},
261: querysend => {anywhere => 1},
262: quit => {anywhere => 1},
263: readlonnetglobal => {institutiononly => 1},
264: reinit => {manageronly => 1}, #not used currently
265: removeuserfile => {remote => 1, enroll => 1},
266: renameuserfile => {remote => 1,},
267: restore => {remote => 1, enroll => 1, reqcrs => 1,},
268: rolesdel => {remote => 1, enroll => 1, domroles => 1, coaurem => 1},
269: rolesput => {remote => 1, enroll => 1, domroles => 1, coaurem => 1},
1.527 raeburn 270: servercerts => {institutiononly => 1},
1.528 ! raeburn 271: serverdistarch => {anywhere => 1},
1.525 raeburn 272: serverhomeID => {anywhere => 1},
273: serverloncaparev => {anywhere => 1},
274: servertimezone => {remote => 1, enroll => 1},
275: setannounce => {remote => 1, domroles => 1},
276: sethost => {anywhere => 1},
277: store => {remote => 1, enroll => 1, reqcrs => 1,},
278: studentphoto => {remote => 1, enroll => 1},
279: sub => {content => 1,},
280: tmpdel => {anywhere => 1},
281: tmpget => {anywhere => 1},
282: tmpput => {anywhere => 1},
283: tokenauthuserfile => {anywhere => 1},
284: unsub => {content => 1,},
285: update => {shared => 1},
286: updateclickers => {remote => 1},
287: userhassession => {anywhere => 1},
288: userload => {anywhere => 1},
289: version => {anywhere => 1}, #not used
290: );
291:
292: #
1.207 foxr 293: # Statistics that are maintained and dislayed in the status line.
294: #
1.212 foxr 295: my $Transactions = 0; # Number of attempted transactions.
296: my $Failures = 0; # Number of transcations failed.
1.207 foxr 297:
298: # ResetStatistics:
299: # Resets the statistics counters:
300: #
301: sub ResetStatistics {
302: $Transactions = 0;
303: $Failures = 0;
304: }
305:
1.200 matthew 306: #------------------------------------------------------------------------
307: #
308: # LocalConnection
309: # Completes the formation of a locally authenticated connection.
310: # This function will ensure that the 'remote' client is really the
311: # local host. If not, the connection is closed, and the function fails.
312: # If so, initcmd is parsed for the name of a file containing the
313: # IDEA session key. The fie is opened, read, deleted and the session
314: # key returned to the caller.
315: #
316: # Parameters:
317: # $Socket - Socket open on client.
318: # $initcmd - The full text of the init command.
319: #
320: # Returns:
321: # IDEA session key on success.
322: # undef on failure.
323: #
324: sub LocalConnection {
325: my ($Socket, $initcmd) = @_;
1.373 albertel 326: Debug("Attempting local connection: $initcmd client: $clientip");
1.277 albertel 327: if($clientip ne "127.0.0.1") {
1.200 matthew 328: &logthis('<font color="red"> LocalConnection rejecting non local: '
1.373 albertel 329: ."$clientip ne 127.0.0.1 </font>");
1.200 matthew 330: close $Socket;
331: return undef;
1.224 foxr 332: } else {
1.200 matthew 333: chomp($initcmd); # Get rid of \n in filename.
334: my ($init, $type, $name) = split(/:/, $initcmd);
335: Debug(" Init command: $init $type $name ");
336:
337: # Require that $init = init, and $type = local: Otherwise
338: # the caller is insane:
339:
340: if(($init ne "init") && ($type ne "local")) {
341: &logthis('<font color = "red"> LocalConnection: caller is insane! '
342: ."init = $init, and type = $type </font>");
343: close($Socket);;
344: return undef;
345:
346: }
347: # Now get the key filename:
348:
349: my $IDEAKey = lonlocal::ReadKeyFile($name);
350: return $IDEAKey;
351: }
352: }
353: #------------------------------------------------------------------------------
354: #
355: # SSLConnection
356: # Completes the formation of an ssh authenticated connection. The
357: # socket is promoted to an ssl socket. If this promotion and the associated
358: # certificate exchange are successful, the IDEA key is generated and sent
359: # to the remote peer via the SSL tunnel. The IDEA key is also returned to
360: # the caller after the SSL tunnel is torn down.
361: #
362: # Parameters:
363: # Name Type Purpose
364: # $Socket IO::Socket::INET Plaintext socket.
365: #
366: # Returns:
367: # IDEA key on success.
368: # undef on failure.
369: #
370: sub SSLConnection {
371: my $Socket = shift;
372:
373: Debug("SSLConnection: ");
374: my $KeyFile = lonssl::KeyFile();
375: if(!$KeyFile) {
376: my $err = lonssl::LastError();
377: &logthis("<font color=\"red\"> CRITICAL"
378: ."Can't get key file $err </font>");
379: return undef;
380: }
381: my ($CACertificate,
382: $Certificate) = lonssl::CertificateFile();
383:
384:
385: # If any of the key, certificate or certificate authority
386: # certificate filenames are not defined, this can't work.
387:
388: if((!$Certificate) || (!$CACertificate)) {
389: my $err = lonssl::LastError();
390: &logthis("<font color=\"red\"> CRITICAL"
391: ."Can't get certificates: $err </font>");
392:
393: return undef;
394: }
395: Debug("Key: $KeyFile CA: $CACertificate Cert: $Certificate");
396:
397: # Indicate to our peer that we can procede with
398: # a transition to ssl authentication:
399:
400: print $Socket "ok:ssl\n";
401:
402: Debug("Approving promotion -> ssl");
403: # And do so:
404:
405: my $SSLSocket = lonssl::PromoteServerSocket($Socket,
406: $CACertificate,
407: $Certificate,
408: $KeyFile);
409: if(! ($SSLSocket) ) { # SSL socket promotion failed.
410: my $err = lonssl::LastError();
411: &logthis("<font color=\"red\"> CRITICAL "
412: ."SSL Socket promotion failed: $err </font>");
413: return undef;
414: }
415: Debug("SSL Promotion successful");
416:
417: #
418: # The only thing we'll use the socket for is to send the IDEA key
419: # to the peer:
420:
421: my $Key = lonlocal::CreateCipherKey();
422: print $SSLSocket "$Key\n";
423:
424: lonssl::Close($SSLSocket);
425:
426: Debug("Key exchange complete: $Key");
427:
428: return $Key;
429: }
430: #
431: # InsecureConnection:
432: # If insecure connections are allowd,
433: # exchange a challenge with the client to 'validate' the
434: # client (not really, but that's the protocol):
435: # We produce a challenge string that's sent to the client.
436: # The client must then echo the challenge verbatim to us.
437: #
438: # Parameter:
439: # Socket - Socket open on the client.
440: # Returns:
441: # 1 - success.
442: # 0 - failure (e.g.mismatch or insecure not allowed).
443: #
444: sub InsecureConnection {
445: my $Socket = shift;
446:
447: # Don't even start if insecure connections are not allowed.
448:
449: if(! $perlvar{londAllowInsecure}) { # Insecure connections not allowed.
450: return 0;
451: }
452:
453: # Fabricate a challenge string and send it..
454:
455: my $challenge = "$$".time; # pid + time.
456: print $Socket "$challenge\n";
457: &status("Waiting for challenge reply");
458:
459: my $answer = <$Socket>;
460: $answer =~s/\W//g;
461: if($challenge eq $answer) {
462: return 1;
1.224 foxr 463: } else {
1.200 matthew 464: logthis("<font color='blue'>WARNING client did not respond to challenge</font>");
465: &status("No challenge reqply");
466: return 0;
467: }
468:
469:
470: }
1.251 foxr 471: #
472: # Safely execute a command (as long as it's not a shel command and doesn
473: # not require/rely on shell escapes. The function operates by doing a
474: # a pipe based fork and capturing stdout and stderr from the pipe.
475: #
476: # Formal Parameters:
477: # $line - A line of text to be executed as a command.
478: # Returns:
479: # The output from that command. If the output is multiline the caller
480: # must know how to split up the output.
481: #
482: #
483: sub execute_command {
484: my ($line) = @_;
485: my @words = split(/\s/, $line); # Bust the command up into words.
486: my $output = "";
487:
488: my $pid = open(CHILD, "-|");
489:
490: if($pid) { # Parent process
491: Debug("In parent process for execute_command");
492: my @data = <CHILD>; # Read the child's outupt...
493: close CHILD;
494: foreach my $output_line (@data) {
495: Debug("Adding $output_line");
496: $output .= $output_line; # Presumably has a \n on it.
497: }
498:
499: } else { # Child process
500: close (STDERR);
501: open (STDERR, ">&STDOUT");# Combine stderr, and stdout...
502: exec(@words); # won't return.
503: }
504: return $output;
505: }
506:
1.200 matthew 507:
1.140 foxr 508: # GetCertificate: Given a transaction that requires a certificate,
509: # this function will extract the certificate from the transaction
510: # request. Note that at this point, the only concept of a certificate
511: # is the hostname to which we are connected.
512: #
513: # Parameter:
514: # request - The request sent by our client (this parameterization may
515: # need to change when we really use a certificate granting
516: # authority.
517: #
518: sub GetCertificate {
519: my $request = shift;
520:
521: return $clientip;
522: }
1.161 foxr 523:
1.178 foxr 524: #
525: # Return true if client is a manager.
526: #
527: sub isManager {
528: return (($ConnectionType eq "manager") || ($ConnectionType eq "both"));
529: }
530: #
531: # Return tru if client can do client functions
532: #
533: sub isClient {
534: return (($ConnectionType eq "client") || ($ConnectionType eq "both"));
535: }
1.161 foxr 536:
537:
1.156 foxr 538: #
539: # ReadManagerTable: Reads in the current manager table. For now this is
540: # done on each manager authentication because:
541: # - These authentications are not frequent
542: # - This allows dynamic changes to the manager table
543: # without the need to signal to the lond.
544: #
545: sub ReadManagerTable {
546:
1.412 foxr 547: &Debug("Reading manager table");
1.156 foxr 548: # Clean out the old table first..
549:
1.166 foxr 550: foreach my $key (keys %managers) {
551: delete $managers{$key};
552: }
553:
554: my $tablename = $perlvar{'lonTabDir'}."/managers.tab";
555: if (!open (MANAGERS, $tablename)) {
1.473 raeburn 556: my $hostname = &Apache::lonnet::hostname($perlvar{'lonHostID'});
557: if (&Apache::lonnet::is_LC_dns($hostname)) {
1.472 raeburn 558: &logthis('<font color="red">No manager table. Nobody can manage!!</font>');
559: }
560: return;
1.166 foxr 561: }
562: while(my $host = <MANAGERS>) {
563: chomp($host);
564: if ($host =~ "^#") { # Comment line.
565: next;
566: }
1.368 albertel 567: if (!defined &Apache::lonnet::get_host_ip($host)) { # This is a non cluster member
1.161 foxr 568: # The entry is of the form:
569: # cluname:hostname
570: # cluname - A 'cluster hostname' is needed in order to negotiate
571: # the host key.
572: # hostname- The dns name of the host.
573: #
1.166 foxr 574: my($cluname, $dnsname) = split(/:/, $host);
575:
576: my $ip = gethostbyname($dnsname);
577: if(defined($ip)) { # bad names don't deserve entry.
578: my $hostip = inet_ntoa($ip);
579: $managers{$hostip} = $cluname;
580: logthis('<font color="green"> registering manager '.
581: "$dnsname as $cluname with $hostip </font>\n");
582: }
583: } else {
584: logthis('<font color="green"> existing host'." $host</font>\n");
1.472 raeburn 585: $managers{&Apache::lonnet::get_host_ip($host)} = $host; # Use info from cluster tab if cluster memeber
1.166 foxr 586: }
587: }
1.156 foxr 588: }
1.140 foxr 589:
590: #
591: # ValidManager: Determines if a given certificate represents a valid manager.
592: # in this primitive implementation, the 'certificate' is
593: # just the connecting loncapa client name. This is checked
594: # against a valid client list in the configuration.
595: #
596: #
597: sub ValidManager {
598: my $certificate = shift;
599:
1.163 foxr 600: return isManager;
1.140 foxr 601: }
602: #
1.143 foxr 603: # CopyFile: Called as part of the process of installing a
604: # new configuration file. This function copies an existing
605: # file to a backup file.
606: # Parameters:
607: # oldfile - Name of the file to backup.
608: # newfile - Name of the backup file.
609: # Return:
610: # 0 - Failure (errno has failure reason).
611: # 1 - Success.
612: #
613: sub CopyFile {
1.192 foxr 614:
615: my ($oldfile, $newfile) = @_;
1.143 foxr 616:
1.281 matthew 617: if (! copy($oldfile,$newfile)) {
618: return 0;
1.143 foxr 619: }
1.281 matthew 620: chmod(0660, $newfile);
621: return 1;
1.143 foxr 622: }
1.157 foxr 623: #
624: # Host files are passed out with externally visible host IPs.
625: # If, for example, we are behind a fire-wall or NAT host, our
626: # internally visible IP may be different than the externally
627: # visible IP. Therefore, we always adjust the contents of the
628: # host file so that the entry for ME is the IP that we believe
629: # we have. At present, this is defined as the entry that
630: # DNS has for us. If by some chance we are not able to get a
631: # DNS translation for us, then we assume that the host.tab file
632: # is correct.
633: # BUGBUGBUG - in the future, we really should see if we can
634: # easily query the interface(s) instead.
635: # Parameter(s):
636: # contents - The contents of the host.tab to check.
637: # Returns:
638: # newcontents - The adjusted contents.
639: #
640: #
641: sub AdjustHostContents {
642: my $contents = shift;
643: my $adjusted;
644: my $me = $perlvar{'lonHostID'};
645:
1.354 albertel 646: foreach my $line (split(/\n/,$contents)) {
1.472 raeburn 647: if(!(($line eq "") || ($line =~ /^ *\#/) || ($line =~ /^ *$/) ||
648: ($line =~ /^\s*\^/))) {
1.157 foxr 649: chomp($line);
650: my ($id,$domain,$role,$name,$ip,$maxcon,$idleto,$mincon)=split(/:/,$line);
651: if ($id eq $me) {
1.354 albertel 652: my $ip = gethostbyname($name);
653: my $ipnew = inet_ntoa($ip);
654: $ip = $ipnew;
1.157 foxr 655: # Reconstruct the host line and append to adjusted:
656:
1.354 albertel 657: my $newline = "$id:$domain:$role:$name:$ip";
658: if($maxcon ne "") { # Not all hosts have loncnew tuning params
659: $newline .= ":$maxcon:$idleto:$mincon";
660: }
661: $adjusted .= $newline."\n";
1.157 foxr 662:
1.354 albertel 663: } else { # Not me, pass unmodified.
664: $adjusted .= $line."\n";
665: }
1.157 foxr 666: } else { # Blank or comment never re-written.
667: $adjusted .= $line."\n"; # Pass blanks and comments as is.
668: }
1.354 albertel 669: }
670: return $adjusted;
1.157 foxr 671: }
1.143 foxr 672: #
673: # InstallFile: Called to install an administrative file:
1.412 foxr 674: # - The file is created int a temp directory called <name>.tmp
675: # - lcinstall file is called to install the file.
676: # since the web app has no direct write access to the table directory
1.143 foxr 677: #
678: # Parameters:
679: # Name of the file
680: # File Contents.
681: # Return:
682: # nonzero - success.
683: # 0 - failure and $! has an errno.
1.412 foxr 684: # Assumptions:
685: # File installtion is a relatively infrequent
1.143 foxr 686: #
687: sub InstallFile {
1.192 foxr 688:
689: my ($Filename, $Contents) = @_;
1.412 foxr 690: # my $TempFile = $Filename.".tmp";
691: my $exedir = $perlvar{'lonDaemons'};
692: my $tmpdir = $exedir.'/tmp/';
693: my $TempFile = $tmpdir."TempTableFile.tmp";
1.143 foxr 694:
695: # Open the file for write:
696:
697: my $fh = IO::File->new("> $TempFile"); # Write to temp.
698: if(!(defined $fh)) {
699: &logthis('<font color="red"> Unable to create '.$TempFile."</font>");
700: return 0;
701: }
702: # write the contents of the file:
703:
704: print $fh ($Contents);
705: $fh->close; # In case we ever have a filesystem w. locking
706:
1.412 foxr 707: chmod(0664, $TempFile); # Everyone can write it.
708:
709: # Use lcinstall file to put the file in the table directory...
710:
711: &Debug("Opening pipe to $exedir/lcinstallfile $TempFile $Filename");
712: my $pf = IO::File->new("| $exedir/lcinstallfile $TempFile $Filename > $exedir/logs/lcinstallfile.log");
713: close $pf;
714: my $err = $?;
715: &Debug("Status is $err");
716: if ($err != 0) {
717: my $msg = $err;
718: if ($err < @installerrors) {
719: $msg = $installerrors[$err];
720: }
721: &logthis("Install failed for table file $Filename : $msg");
722: return 0;
723: }
724:
725: # Remove the temp file:
1.143 foxr 726:
1.412 foxr 727: unlink($TempFile);
1.143 foxr 728:
729: return 1;
730: }
1.200 matthew 731:
732:
1.169 foxr 733: #
734: # ConfigFileFromSelector: converts a configuration file selector
1.411 foxr 735: # into a configuration file pathname.
1.472 raeburn 736: # Supports the following file selectors:
737: # hosts, domain, dns_hosts, dns_domain
1.411 foxr 738: #
1.169 foxr 739: #
740: # Parameters:
741: # selector - Configuration file selector.
742: # Returns:
743: # Full path to the file or undef if the selector is invalid.
744: #
745: sub ConfigFileFromSelector {
746: my $selector = shift;
747: my $tablefile;
748:
749: my $tabledir = $perlvar{'lonTabDir'}.'/';
1.472 raeburn 750: if (($selector eq "hosts") || ($selector eq "domain") ||
751: ($selector eq "dns_hosts") || ($selector eq "dns_domain")) {
1.411 foxr 752: $tablefile = $tabledir.$selector.'.tab';
1.169 foxr 753: }
754: return $tablefile;
755: }
1.143 foxr 756: #
1.141 foxr 757: # PushFile: Called to do an administrative push of a file.
758: # - Ensure the file being pushed is one we support.
759: # - Backup the old file to <filename.saved>
760: # - Separate the contents of the new file out from the
761: # rest of the request.
762: # - Write the new file.
763: # Parameter:
764: # Request - The entire user request. This consists of a : separated
765: # string pushfile:tablename:contents.
766: # NOTE: The contents may have :'s in it as well making things a bit
767: # more interesting... but not much.
768: # Returns:
769: # String to send to client ("ok" or "refused" if bad file).
770: #
771: sub PushFile {
1.510 raeburn 772: my $request = shift;
1.141 foxr 773: my ($command, $filename, $contents) = split(":", $request, 3);
1.412 foxr 774: &Debug("PushFile");
1.141 foxr 775:
776: # At this point in time, pushes for only the following tables are
777: # supported:
778: # hosts.tab ($filename eq host).
779: # domain.tab ($filename eq domain).
1.472 raeburn 780: # dns_hosts.tab ($filename eq dns_host).
781: # dns_domain.tab ($filename eq dns_domain).
1.141 foxr 782: # Construct the destination filename or reject the request.
783: #
784: # lonManage is supposed to ensure this, however this session could be
785: # part of some elaborate spoof that managed somehow to authenticate.
786: #
787:
1.169 foxr 788:
789: my $tablefile = ConfigFileFromSelector($filename);
790: if(! (defined $tablefile)) {
1.141 foxr 791: return "refused";
792: }
1.412 foxr 793:
1.157 foxr 794: # If the file being pushed is the host file, we adjust the entry for ourself so that the
795: # IP will be our current IP as looked up in dns. Note this is only 99% good as it's possible
796: # to conceive of conditions where we don't have a DNS entry locally. This is possible in a
797: # network sense but it doesn't make much sense in a LonCAPA sense so we ignore (for now)
798: # that possibilty.
799:
800: if($filename eq "host") {
801: $contents = AdjustHostContents($contents);
1.510 raeburn 802: } elsif ($filename eq 'dns_host' || $filename eq 'dns_domain') {
803: if ($contents eq '') {
804: &logthis('<font color="red"> Pushfile: unable to install '
805: .$tablefile." - no data received from push. </font>");
806: return 'error: push had no data';
807: }
808: if (&Apache::lonnet::get_host_ip($clientname)) {
809: my $clienthost = &Apache::lonnet::hostname($clientname);
810: if ($managers{$clientip} eq $clientname) {
811: my $clientprotocol = $Apache::lonnet::protocol{$clientname};
812: $clientprotocol = 'http' if ($clientprotocol ne 'https');
813: my $url = '/adm/'.$filename;
814: $url =~ s{_}{/};
815: my $request=new HTTP::Request('GET',"$clientprotocol://$clienthost$url");
1.523 raeburn 816: my $response = LONCAPA::LWPReq::makerequest($clientname,$request,'',\%perlvar,60,0);
1.510 raeburn 817: if ($response->is_error()) {
818: &logthis('<font color="red"> Pushfile: unable to install '
819: .$tablefile." - error attempting to pull data. </font>");
820: return 'error: pull failed';
821: } else {
822: my $result = $response->content;
823: chomp($result);
824: unless ($result eq $contents) {
825: &logthis('<font color="red"> Pushfile: unable to install '
826: .$tablefile." - pushed data and pulled data differ. </font>");
827: my $pushleng = length($contents);
828: my $pullleng = length($result);
829: if ($pushleng != $pullleng) {
830: return "error: $pushleng vs $pullleng bytes";
831: } else {
832: return "error: mismatch push and pull";
833: }
834: }
835: }
836: }
837: }
1.157 foxr 838: }
839:
1.141 foxr 840: # Install the new file:
841:
1.412 foxr 842: &logthis("Installing new $tablefile contents:\n$contents");
1.143 foxr 843: if(!InstallFile($tablefile, $contents)) {
844: &logthis('<font color="red"> Pushfile: unable to install '
1.145 foxr 845: .$tablefile." $! </font>");
1.143 foxr 846: return "error:$!";
1.224 foxr 847: } else {
1.143 foxr 848: &logthis('<font color="green"> Installed new '.$tablefile
1.473 raeburn 849: ." - transaction by: $clientname ($clientip)</font>");
1.472 raeburn 850: my $adminmail = $perlvar{'lonAdmEMail'};
851: my $admindom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
852: if ($admindom ne '') {
853: my %domconfig =
854: &Apache::lonnet::get_dom('configuration',['contacts'],$admindom);
855: if (ref($domconfig{'contacts'}) eq 'HASH') {
856: if ($domconfig{'contacts'}{'adminemail'} ne '') {
857: $adminmail = $domconfig{'contacts'}{'adminemail'};
858: }
859: }
860: }
861: if ($adminmail =~ /^[^\@]+\@[^\@]+$/) {
862: my $msg = new Mail::Send;
863: $msg->to($adminmail);
864: $msg->subject('LON-CAPA DNS update on '.$perlvar{'lonHostID'});
865: $msg->add('Content-type','text/plain; charset=UTF-8');
866: if (my $fh = $msg->open()) {
867: print $fh 'Update to '.$tablefile.' from Cluster Manager '.
1.473 raeburn 868: "$clientname ($clientip)\n";
1.472 raeburn 869: $fh->close;
870: }
871: }
1.143 foxr 872: }
873:
1.141 foxr 874: # Indicate success:
875:
876: return "ok";
877:
878: }
1.145 foxr 879:
880: #
881: # Called to re-init either lonc or lond.
882: #
883: # Parameters:
884: # request - The full request by the client. This is of the form
885: # reinit:<process>
886: # where <process> is allowed to be either of
887: # lonc or lond
888: #
889: # Returns:
890: # The string to be sent back to the client either:
891: # ok - Everything worked just fine.
892: # error:why - There was a failure and why describes the reason.
893: #
894: #
895: sub ReinitProcess {
896: my $request = shift;
897:
1.146 foxr 898:
899: # separate the request (reinit) from the process identifier and
900: # validate it producing the name of the .pid file for the process.
901: #
902: #
903: my ($junk, $process) = split(":", $request);
1.147 foxr 904: my $processpidfile = $perlvar{'lonDaemons'}.'/logs/';
1.146 foxr 905: if($process eq 'lonc') {
906: $processpidfile = $processpidfile."lonc.pid";
1.147 foxr 907: if (!open(PIDFILE, "< $processpidfile")) {
908: return "error:Open failed for $processpidfile";
909: }
910: my $loncpid = <PIDFILE>;
911: close(PIDFILE);
912: logthis('<font color="red"> Reinitializing lonc pid='.$loncpid
913: ."</font>");
914: kill("USR2", $loncpid);
1.146 foxr 915: } elsif ($process eq 'lond') {
1.147 foxr 916: logthis('<font color="red"> Reinitializing self (lond) </font>');
917: &UpdateHosts; # Lond is us!!
1.146 foxr 918: } else {
919: &logthis('<font color="yellow" Invalid reinit request for '.$process
920: ."</font>");
921: return "error:Invalid process identifier $process";
922: }
1.145 foxr 923: return 'ok';
924: }
1.168 foxr 925: # Validate a line in a configuration file edit script:
926: # Validation includes:
927: # - Ensuring the command is valid.
928: # - Ensuring the command has sufficient parameters
929: # Parameters:
930: # scriptline - A line to validate (\n has been stripped for what it's worth).
1.167 foxr 931: #
1.168 foxr 932: # Return:
933: # 0 - Invalid scriptline.
934: # 1 - Valid scriptline
935: # NOTE:
936: # Only the command syntax is checked, not the executability of the
937: # command.
938: #
939: sub isValidEditCommand {
940: my $scriptline = shift;
941:
942: # Line elements are pipe separated:
943:
944: my ($command, $key, $newline) = split(/\|/, $scriptline);
945: &logthis('<font color="green"> isValideditCommand checking: '.
946: "Command = '$command', Key = '$key', Newline = '$newline' </font>\n");
947:
948: if ($command eq "delete") {
949: #
950: # key with no newline.
951: #
952: if( ($key eq "") || ($newline ne "")) {
953: return 0; # Must have key but no newline.
954: } else {
955: return 1; # Valid syntax.
956: }
1.169 foxr 957: } elsif ($command eq "replace") {
1.168 foxr 958: #
959: # key and newline:
960: #
961: if (($key eq "") || ($newline eq "")) {
962: return 0;
963: } else {
964: return 1;
965: }
1.169 foxr 966: } elsif ($command eq "append") {
967: if (($key ne "") && ($newline eq "")) {
968: return 1;
969: } else {
970: return 0;
971: }
1.168 foxr 972: } else {
973: return 0; # Invalid command.
974: }
975: return 0; # Should not get here!!!
976: }
1.169 foxr 977: #
978: # ApplyEdit - Applies an edit command to a line in a configuration
979: # file. It is the caller's responsiblity to validate the
980: # edit line.
981: # Parameters:
982: # $directive - A single edit directive to apply.
983: # Edit directives are of the form:
984: # append|newline - Appends a new line to the file.
985: # replace|key|newline - Replaces the line with key value 'key'
986: # delete|key - Deletes the line with key value 'key'.
987: # $editor - A config file editor object that contains the
988: # file being edited.
989: #
990: sub ApplyEdit {
1.192 foxr 991:
992: my ($directive, $editor) = @_;
1.169 foxr 993:
994: # Break the directive down into its command and its parameters
995: # (at most two at this point. The meaning of the parameters, if in fact
996: # they exist depends on the command).
997:
998: my ($command, $p1, $p2) = split(/\|/, $directive);
999:
1000: if($command eq "append") {
1001: $editor->Append($p1); # p1 - key p2 null.
1002: } elsif ($command eq "replace") {
1003: $editor->ReplaceLine($p1, $p2); # p1 - key p2 = newline.
1004: } elsif ($command eq "delete") {
1005: $editor->DeleteLine($p1); # p1 - key p2 null.
1006: } else { # Should not get here!!!
1007: die "Invalid command given to ApplyEdit $command"
1008: }
1009: }
1010: #
1011: # AdjustOurHost:
1012: # Adjusts a host file stored in a configuration file editor object
1013: # for the true IP address of this host. This is necessary for hosts
1014: # that live behind a firewall.
1015: # Those hosts have a publicly distributed IP of the firewall, but
1016: # internally must use their actual IP. We assume that a given
1017: # host only has a single IP interface for now.
1018: # Formal Parameters:
1019: # editor - The configuration file editor to adjust. This
1020: # editor is assumed to contain a hosts.tab file.
1021: # Strategy:
1022: # - Figure out our hostname.
1023: # - Lookup the entry for this host.
1024: # - Modify the line to contain our IP
1025: # - Do a replace for this host.
1026: sub AdjustOurHost {
1027: my $editor = shift;
1028:
1029: # figure out who I am.
1030:
1031: my $myHostName = $perlvar{'lonHostID'}; # LonCAPA hostname.
1032:
1033: # Get my host file entry.
1034:
1035: my $ConfigLine = $editor->Find($myHostName);
1036: if(! (defined $ConfigLine)) {
1037: die "AdjustOurHost - no entry for me in hosts file $myHostName";
1038: }
1039: # figure out my IP:
1040: # Use the config line to get my hostname.
1041: # Use gethostbyname to translate that into an IP address.
1042: #
1.338 albertel 1043: my ($id,$domain,$role,$name,$maxcon,$idleto,$mincon) = split(/:/,$ConfigLine);
1.169 foxr 1044: #
1045: # Reassemble the config line from the elements in the list.
1046: # Note that if the loncnew items were not present before, they will
1047: # be now even if they would be empty
1048: #
1049: my $newConfigLine = $id;
1.338 albertel 1050: foreach my $item ($domain, $role, $name, $maxcon, $idleto, $mincon) {
1.169 foxr 1051: $newConfigLine .= ":".$item;
1052: }
1053: # Replace the line:
1054:
1055: $editor->ReplaceLine($id, $newConfigLine);
1056:
1057: }
1058: #
1059: # ReplaceConfigFile:
1060: # Replaces a configuration file with the contents of a
1061: # configuration file editor object.
1062: # This is done by:
1063: # - Copying the target file to <filename>.old
1064: # - Writing the new file to <filename>.tmp
1065: # - Moving <filename.tmp> -> <filename>
1066: # This laborious process ensures that the system is never without
1067: # a configuration file that's at least valid (even if the contents
1068: # may be dated).
1069: # Parameters:
1070: # filename - Name of the file to modify... this is a full path.
1071: # editor - Editor containing the file.
1072: #
1073: sub ReplaceConfigFile {
1.192 foxr 1074:
1075: my ($filename, $editor) = @_;
1.168 foxr 1076:
1.169 foxr 1077: CopyFile ($filename, $filename.".old");
1078:
1079: my $contents = $editor->Get(); # Get the contents of the file.
1080:
1081: InstallFile($filename, $contents);
1082: }
1.168 foxr 1083: #
1084: #
1085: # Called to edit a configuration table file
1.167 foxr 1086: # Parameters:
1087: # request - The entire command/request sent by lonc or lonManage
1088: # Return:
1089: # The reply to send to the client.
1.168 foxr 1090: #
1.167 foxr 1091: sub EditFile {
1092: my $request = shift;
1093:
1094: # Split the command into it's pieces: edit:filetype:script
1095:
1.339 albertel 1096: my ($cmd, $filetype, $script) = split(/:/, $request,3); # : in script
1.167 foxr 1097:
1098: # Check the pre-coditions for success:
1099:
1.339 albertel 1100: if($cmd != "edit") { # Something is amiss afoot alack.
1.167 foxr 1101: return "error:edit request detected, but request != 'edit'\n";
1102: }
1103: if( ($filetype ne "hosts") &&
1104: ($filetype ne "domain")) {
1105: return "error:edit requested with invalid file specifier: $filetype \n";
1106: }
1107:
1108: # Split the edit script and check it's validity.
1.168 foxr 1109:
1110: my @scriptlines = split(/\n/, $script); # one line per element.
1111: my $linecount = scalar(@scriptlines);
1112: for(my $i = 0; $i < $linecount; $i++) {
1113: chomp($scriptlines[$i]);
1114: if(!isValidEditCommand($scriptlines[$i])) {
1115: return "error:edit with bad script line: '$scriptlines[$i]' \n";
1116: }
1117: }
1.145 foxr 1118:
1.167 foxr 1119: # Execute the edit operation.
1.169 foxr 1120: # - Create a config file editor for the appropriate file and
1121: # - execute each command in the script:
1122: #
1123: my $configfile = ConfigFileFromSelector($filetype);
1124: if (!(defined $configfile)) {
1125: return "refused\n";
1126: }
1127: my $editor = ConfigFileEdit->new($configfile);
1.167 foxr 1128:
1.169 foxr 1129: for (my $i = 0; $i < $linecount; $i++) {
1130: ApplyEdit($scriptlines[$i], $editor);
1131: }
1132: # If the file is the host file, ensure that our host is
1133: # adjusted to have our ip:
1134: #
1135: if($filetype eq "host") {
1136: AdjustOurHost($editor);
1137: }
1138: # Finally replace the current file with our file.
1139: #
1140: ReplaceConfigFile($configfile, $editor);
1.167 foxr 1141:
1142: return "ok\n";
1143: }
1.207 foxr 1144:
1.255 foxr 1145: # read_profile
1146: #
1147: # Returns a set of specific entries from a user's profile file.
1148: # this is a utility function that is used by both get_profile_entry and
1149: # get_profile_entry_encrypted.
1150: #
1151: # Parameters:
1152: # udom - Domain in which the user exists.
1153: # uname - User's account name (loncapa account)
1154: # namespace - The profile namespace to open.
1155: # what - A set of & separated queries.
1156: # Returns:
1157: # If all ok: - The string that needs to be shipped back to the user.
1158: # If failure - A string that starts with error: followed by the failure
1159: # reason.. note that this probabyl gets shipped back to the
1160: # user as well.
1161: #
1162: sub read_profile {
1163: my ($udom, $uname, $namespace, $what) = @_;
1164:
1165: my $hashref = &tie_user_hash($udom, $uname, $namespace,
1166: &GDBM_READER());
1167: if ($hashref) {
1168: my @queries=split(/\&/,$what);
1.440 raeburn 1169: if ($namespace eq 'roles') {
1170: @queries = map { &unescape($_); } @queries;
1171: }
1.255 foxr 1172: my $qresult='';
1173:
1174: for (my $i=0;$i<=$#queries;$i++) {
1175: $qresult.="$hashref->{$queries[$i]}&"; # Presumably failure gives empty string.
1176: }
1177: $qresult=~s/\&$//; # Remove trailing & from last lookup.
1.311 albertel 1178: if (&untie_user_hash($hashref)) {
1.255 foxr 1179: return $qresult;
1180: } else {
1181: return "error: ".($!+0)." untie (GDBM) Failed";
1182: }
1183: } else {
1184: if ($!+0 == 2) {
1185: return "error:No such file or GDBM reported bad block error";
1186: } else {
1187: return "error: ".($!+0)." tie (GDBM) Failed";
1188: }
1189: }
1190:
1191: }
1.214 foxr 1192: #--------------------- Request Handlers --------------------------------------------
1193: #
1.215 foxr 1194: # By convention each request handler registers itself prior to the sub
1195: # declaration:
1.214 foxr 1196: #
1197:
1.216 foxr 1198: #++
1199: #
1.214 foxr 1200: # Handles ping requests.
1201: # Parameters:
1202: # $cmd - the actual keyword that invoked us.
1203: # $tail - the tail of the request that invoked us.
1204: # $replyfd- File descriptor connected to the client
1205: # Implicit Inputs:
1206: # $currenthostid - Global variable that carries the name of the host we are
1207: # known as.
1208: # Returns:
1209: # 1 - Ok to continue processing.
1210: # 0 - Program should exit.
1211: # Side effects:
1212: # Reply information is sent to the client.
1213: sub ping_handler {
1214: my ($cmd, $tail, $client) = @_;
1215: Debug("$cmd $tail $client .. $currenthostid:");
1216:
1.387 albertel 1217: Reply( $client,\$currenthostid,"$cmd:$tail");
1.214 foxr 1218:
1219: return 1;
1220: }
1221: ®ister_handler("ping", \&ping_handler, 0, 1, 1); # Ping unencoded, client or manager.
1222:
1.216 foxr 1223: #++
1.215 foxr 1224: #
1225: # Handles pong requests. Pong replies with our current host id, and
1226: # the results of a ping sent to us via our lonc.
1227: #
1228: # Parameters:
1229: # $cmd - the actual keyword that invoked us.
1230: # $tail - the tail of the request that invoked us.
1231: # $replyfd- File descriptor connected to the client
1232: # Implicit Inputs:
1233: # $currenthostid - Global variable that carries the name of the host we are
1234: # connected to.
1235: # Returns:
1236: # 1 - Ok to continue processing.
1237: # 0 - Program should exit.
1238: # Side effects:
1239: # Reply information is sent to the client.
1240: sub pong_handler {
1241: my ($cmd, $tail, $replyfd) = @_;
1242:
1.365 albertel 1243: my $reply=&Apache::lonnet::reply("ping",$clientname);
1.215 foxr 1244: &Reply( $replyfd, "$currenthostid:$reply\n", "$cmd:$tail");
1245: return 1;
1246: }
1247: ®ister_handler("pong", \&pong_handler, 0, 1, 1); # Pong unencoded, client or manager
1248:
1.216 foxr 1249: #++
1250: # Called to establish an encrypted session key with the remote client.
1251: # Note that with secure lond, in most cases this function is never
1252: # invoked. Instead, the secure session key is established either
1253: # via a local file that's locked down tight and only lives for a short
1254: # time, or via an ssl tunnel...and is generated from a bunch-o-random
1255: # bits from /dev/urandom, rather than the predictable pattern used by
1256: # by this sub. This sub is only used in the old-style insecure
1257: # key negotiation.
1258: # Parameters:
1259: # $cmd - the actual keyword that invoked us.
1260: # $tail - the tail of the request that invoked us.
1261: # $replyfd- File descriptor connected to the client
1262: # Implicit Inputs:
1263: # $currenthostid - Global variable that carries the name of the host
1264: # known as.
1.448 raeburn 1265: # $clientname - Global variable that carries the name of the host we're connected to.
1.216 foxr 1266: # Returns:
1267: # 1 - Ok to continue processing.
1268: # 0 - Program should exit.
1269: # Implicit Outputs:
1270: # Reply information is sent to the client.
1271: # $cipher is set with a reference to a new IDEA encryption object.
1272: #
1273: sub establish_key_handler {
1274: my ($cmd, $tail, $replyfd) = @_;
1275:
1276: my $buildkey=time.$$.int(rand 100000);
1277: $buildkey=~tr/1-6/A-F/;
1278: $buildkey=int(rand 100000).$buildkey.int(rand 100000);
1279: my $key=$currenthostid.$clientname;
1280: $key=~tr/a-z/A-Z/;
1281: $key=~tr/G-P/0-9/;
1282: $key=~tr/Q-Z/0-9/;
1283: $key=$key.$buildkey.$key.$buildkey.$key.$buildkey;
1284: $key=substr($key,0,32);
1285: my $cipherkey=pack("H32",$key);
1286: $cipher=new IDEA $cipherkey;
1.387 albertel 1287: &Reply($replyfd, \$buildkey, "$cmd:$tail");
1.216 foxr 1288:
1289: return 1;
1290:
1291: }
1292: ®ister_handler("ekey", \&establish_key_handler, 0, 1,1);
1293:
1.217 foxr 1294: # Handler for the load command. Returns the current system load average
1295: # to the requestor.
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
1303: # known as.
1.448 raeburn 1304: # $clientname - Global variable that carries the name of the host we're connected to.
1.217 foxr 1305: # Returns:
1306: # 1 - Ok to continue processing.
1307: # 0 - Program should exit.
1308: # Side effects:
1309: # Reply information is sent to the client.
1310: sub load_handler {
1311: my ($cmd, $tail, $replyfd) = @_;
1312:
1.463 foxr 1313:
1314:
1.217 foxr 1315: # Get the load average from /proc/loadavg and calculate it as a percentage of
1316: # the allowed load limit as set by the perl global variable lonLoadLim
1317:
1318: my $loadavg;
1319: my $loadfile=IO::File->new('/proc/loadavg');
1320:
1321: $loadavg=<$loadfile>;
1322: $loadavg =~ s/\s.*//g; # Extract the first field only.
1323:
1324: my $loadpercent=100*$loadavg/$perlvar{'lonLoadLim'};
1325:
1.387 albertel 1326: &Reply( $replyfd, \$loadpercent, "$cmd:$tail");
1.217 foxr 1327:
1328: return 1;
1329: }
1.263 albertel 1330: ®ister_handler("load", \&load_handler, 0, 1, 0);
1.217 foxr 1331:
1332: #
1333: # Process the userload request. This sub returns to the client the current
1334: # user load average. It can be invoked either by clients or managers.
1335: #
1336: # Parameters:
1337: # $cmd - the actual keyword that invoked us.
1338: # $tail - the tail of the request that invoked us.
1339: # $replyfd- File descriptor connected to the client
1340: # Implicit Inputs:
1341: # $currenthostid - Global variable that carries the name of the host
1342: # known as.
1.448 raeburn 1343: # $clientname - Global variable that carries the name of the host we're connected to.
1.217 foxr 1344: # Returns:
1345: # 1 - Ok to continue processing.
1346: # 0 - Program should exit
1347: # Implicit inputs:
1348: # whatever the userload() function requires.
1349: # Implicit outputs:
1350: # the reply is written to the client.
1351: #
1352: sub user_load_handler {
1353: my ($cmd, $tail, $replyfd) = @_;
1354:
1.365 albertel 1355: my $userloadpercent=&Apache::lonnet::userload();
1.387 albertel 1356: &Reply($replyfd, \$userloadpercent, "$cmd:$tail");
1.217 foxr 1357:
1358: return 1;
1359: }
1.263 albertel 1360: ®ister_handler("userload", \&user_load_handler, 0, 1, 0);
1.217 foxr 1361:
1.218 foxr 1362: # Process a request for the authorization type of a user:
1363: # (userauth).
1364: #
1365: # Parameters:
1366: # $cmd - the actual keyword that invoked us.
1367: # $tail - the tail of the request that invoked us.
1368: # $replyfd- File descriptor connected to the client
1369: # Returns:
1370: # 1 - Ok to continue processing.
1371: # 0 - Program should exit
1372: # Implicit outputs:
1373: # The user authorization type is written to the client.
1374: #
1375: sub user_authorization_type {
1376: my ($cmd, $tail, $replyfd) = @_;
1377:
1378: my $userinput = "$cmd:$tail";
1379:
1380: # Pull the domain and username out of the command tail.
1.222 foxr 1381: # and call get_auth_type to determine the authentication type.
1.218 foxr 1382:
1383: my ($udom,$uname)=split(/:/,$tail);
1.222 foxr 1384: my $result = &get_auth_type($udom, $uname);
1.218 foxr 1385: if($result eq "nouser") {
1386: &Failure( $replyfd, "unknown_user\n", $userinput);
1387: } else {
1388: #
1.222 foxr 1389: # We only want to pass the second field from get_auth_type
1.218 foxr 1390: # for ^krb.. otherwise we'll be handing out the encrypted
1391: # password for internals e.g.
1392: #
1393: my ($type,$otherinfo) = split(/:/,$result);
1394: if($type =~ /^krb/) {
1395: $type = $result;
1.269 raeburn 1396: } else {
1397: $type .= ':';
1398: }
1.387 albertel 1399: &Reply( $replyfd, \$type, $userinput);
1.218 foxr 1400: }
1401:
1402: return 1;
1403: }
1404: ®ister_handler("currentauth", \&user_authorization_type, 1, 1, 0);
1405:
1406: # Process a request by a manager to push a hosts or domain table
1407: # to us. We pick apart the command and pass it on to the subs
1408: # that already exist to do this.
1409: #
1410: # Parameters:
1411: # $cmd - the actual keyword that invoked us.
1412: # $tail - the tail of the request that invoked us.
1413: # $client - File descriptor connected to the client
1414: # Returns:
1415: # 1 - Ok to continue processing.
1416: # 0 - Program should exit
1417: # Implicit Output:
1418: # a reply is written to the client.
1419: sub push_file_handler {
1420: my ($cmd, $tail, $client) = @_;
1.412 foxr 1421: &Debug("In push file handler");
1.218 foxr 1422: my $userinput = "$cmd:$tail";
1423:
1424: # At this time we only know that the IP of our partner is a valid manager
1425: # the code below is a hook to do further authentication (e.g. to resolve
1426: # spoofing).
1427:
1428: my $cert = &GetCertificate($userinput);
1.412 foxr 1429: if(&ValidManager($cert)) {
1430: &Debug("Valid manager: $client");
1.218 foxr 1431:
1432: # Now presumably we have the bona fides of both the peer host and the
1433: # process making the request.
1434:
1435: my $reply = &PushFile($userinput);
1.387 albertel 1436: &Reply($client, \$reply, $userinput);
1.218 foxr 1437:
1438: } else {
1.412 foxr 1439: &logthis("push_file_handler $client is not valid");
1.218 foxr 1440: &Failure( $client, "refused\n", $userinput);
1441: }
1.219 foxr 1442: return 1;
1.218 foxr 1443: }
1444: ®ister_handler("pushfile", \&push_file_handler, 1, 0, 1);
1445:
1.399 raeburn 1446: # The du_handler routine should be considered obsolete and is retained
1447: # for communication with legacy servers. Please see the du2_handler.
1.243 banghart 1448: #
1.399 raeburn 1449: # du - list the disk usage of a directory recursively.
1.243 banghart 1450: #
1451: # note: stolen code from the ls file handler
1452: # under construction by Rick Banghart
1453: # .
1454: # Parameters:
1455: # $cmd - The command that dispatched us (du).
1456: # $ududir - The directory path to list... I'm not sure what this
1457: # is relative as things like ls:. return e.g.
1458: # no_such_dir.
1459: # $client - Socket open on the client.
1460: # Returns:
1461: # 1 - indicating that the daemon should not disconnect.
1462: # Side Effects:
1463: # The reply is written to $client.
1464: #
1465: sub du_handler {
1466: my ($cmd, $ududir, $client) = @_;
1.339 albertel 1467: ($ududir) = split(/:/,$ududir); # Make 'telnet' testing easier.
1.251 foxr 1468: my $userinput = "$cmd:$ududir";
1469:
1.245 albertel 1470: if ($ududir=~/\.\./ || $ududir!~m|^/home/httpd/|) {
1471: &Failure($client,"refused\n","$cmd:$ududir");
1472: return 1;
1473: }
1.249 foxr 1474: # Since $ududir could have some nasties in it,
1475: # we will require that ududir is a valid
1476: # directory. Just in case someone tries to
1477: # slip us a line like .;(cd /home/httpd rm -rf*)
1478: # etc.
1479: #
1480: if (-d $ududir) {
1.292 albertel 1481: my $total_size=0;
1482: my $code=sub {
1483: if ($_=~/\.\d+\./) { return;}
1484: if ($_=~/\.meta$/) { return;}
1.362 albertel 1485: if (-d $_) { return;}
1.292 albertel 1486: $total_size+=(stat($_))[7];
1487: };
1.295 raeburn 1488: chdir($ududir);
1.292 albertel 1489: find($code,$ududir);
1490: $total_size=int($total_size/1024);
1.387 albertel 1491: &Reply($client,\$total_size,"$cmd:$ududir");
1.249 foxr 1492: } else {
1.251 foxr 1493: &Failure($client, "bad_directory:$ududir\n","$cmd:$ududir");
1.249 foxr 1494: }
1.243 banghart 1495: return 1;
1496: }
1497: ®ister_handler("du", \&du_handler, 0, 1, 0);
1.218 foxr 1498:
1.399 raeburn 1499: # Please also see the du_handler, which is obsoleted by du2.
1500: # du2_handler differs from du_handler in that required path to directory
1501: # provided by &propath() is prepended in the handler instead of on the
1502: # client side.
1.239 foxr 1503: #
1.399 raeburn 1504: # du2 - list the disk usage of a directory recursively.
1505: #
1506: # Parameters:
1507: # $cmd - The command that dispatched us (du).
1508: # $tail - The tail of the request that invoked us.
1509: # $tail is a : separated list of the following:
1510: # - $ududir - directory path to list (before prepending)
1511: # - $getpropath = 1 if &propath() should prepend
1512: # - $uname - username to use for &propath or user dir
1513: # - $udom - domain to use for &propath or user dir
1514: # All are escaped.
1515: # $client - Socket open on the client.
1516: # Returns:
1517: # 1 - indicating that the daemon should not disconnect.
1518: # Side Effects:
1519: # The reply is written to $client.
1520: #
1521:
1522: sub du2_handler {
1523: my ($cmd, $tail, $client) = @_;
1524: my ($ududir,$getpropath,$uname,$udom) = map { &unescape($_) } (split(/:/, $tail));
1525: my $userinput = "$cmd:$tail";
1526: if (($ududir=~/\.\./) || (($ududir!~m|^/home/httpd/|) && (!$getpropath))) {
1527: &Failure($client,"refused\n","$cmd:$tail");
1528: return 1;
1529: }
1530: if ($getpropath) {
1531: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1532: $ududir = &propath($udom,$uname).'/'.$ududir;
1533: } else {
1534: &Failure($client,"refused\n","$cmd:$tail");
1535: return 1;
1536: }
1537: }
1538: # Since $ududir could have some nasties in it,
1539: # we will require that ududir is a valid
1540: # directory. Just in case someone tries to
1541: # slip us a line like .;(cd /home/httpd rm -rf*)
1542: # etc.
1543: #
1544: if (-d $ududir) {
1545: my $total_size=0;
1546: my $code=sub {
1547: if ($_=~/\.\d+\./) { return;}
1548: if ($_=~/\.meta$/) { return;}
1549: if (-d $_) { return;}
1550: $total_size+=(stat($_))[7];
1551: };
1552: chdir($ududir);
1553: find($code,$ududir);
1554: $total_size=int($total_size/1024);
1555: &Reply($client,\$total_size,"$cmd:$ududir");
1556: } else {
1557: &Failure($client, "bad_directory:$ududir\n","$cmd:$tail");
1558: }
1559: return 1;
1560: }
1561: ®ister_handler("du2", \&du2_handler, 0, 1, 0);
1562:
1563: #
1564: # The ls_handler routine should be considered obsolete and is retained
1565: # for communication with legacy servers. Please see the ls3_handler.
1.280 matthew 1566: #
1.239 foxr 1567: # ls - list the contents of a directory. For each file in the
1568: # selected directory the filename followed by the full output of
1569: # the stat function is returned. The returned info for each
1570: # file are separated by ':'. The stat fields are separated by &'s.
1571: # Parameters:
1572: # $cmd - The command that dispatched us (ls).
1573: # $ulsdir - The directory path to list... I'm not sure what this
1574: # is relative as things like ls:. return e.g.
1575: # no_such_dir.
1576: # $client - Socket open on the client.
1577: # Returns:
1578: # 1 - indicating that the daemon should not disconnect.
1579: # Side Effects:
1580: # The reply is written to $client.
1581: #
1582: sub ls_handler {
1.280 matthew 1583: # obsoleted by ls2_handler
1.239 foxr 1584: my ($cmd, $ulsdir, $client) = @_;
1585:
1586: my $userinput = "$cmd:$ulsdir";
1587:
1588: my $obs;
1589: my $rights;
1590: my $ulsout='';
1591: my $ulsfn;
1592: if (-e $ulsdir) {
1593: if(-d $ulsdir) {
1594: if (opendir(LSDIR,$ulsdir)) {
1595: while ($ulsfn=readdir(LSDIR)) {
1.291 albertel 1596: undef($obs);
1597: undef($rights);
1.239 foxr 1598: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1599: #We do some obsolete checking here
1600: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1601: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1602: my @obsolete=<FILE>;
1603: foreach my $obsolete (@obsolete) {
1.301 www 1604: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1.239 foxr 1605: if($obsolete =~ m|(<copyright>)(default)|) { $rights = 1; }
1606: }
1607: }
1608: $ulsout.=$ulsfn.'&'.join('&',@ulsstats);
1609: if($obs eq '1') { $ulsout.="&1"; }
1610: else { $ulsout.="&0"; }
1611: if($rights eq '1') { $ulsout.="&1:"; }
1612: else { $ulsout.="&0:"; }
1613: }
1614: closedir(LSDIR);
1615: }
1616: } else {
1617: my @ulsstats=stat($ulsdir);
1618: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1619: }
1620: } else {
1621: $ulsout='no_such_dir';
1622: }
1623: if ($ulsout eq '') { $ulsout='empty'; }
1.387 albertel 1624: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1.239 foxr 1625:
1626: return 1;
1627:
1628: }
1629: ®ister_handler("ls", \&ls_handler, 0, 1, 0);
1630:
1.399 raeburn 1631: # The ls2_handler routine should be considered obsolete and is retained
1632: # for communication with legacy servers. Please see the ls3_handler.
1633: # Please also see the ls_handler, which was itself obsoleted by ls2.
1.280 matthew 1634: # ls2_handler differs from ls_handler in that it escapes its return
1635: # values before concatenating them together with ':'s.
1636: #
1637: # ls2 - list the contents of a directory. For each file in the
1638: # selected directory the filename followed by the full output of
1639: # the stat function is returned. The returned info for each
1640: # file are separated by ':'. The stat fields are separated by &'s.
1641: # Parameters:
1642: # $cmd - The command that dispatched us (ls).
1643: # $ulsdir - The directory path to list... I'm not sure what this
1644: # is relative as things like ls:. return e.g.
1645: # no_such_dir.
1646: # $client - Socket open on the client.
1647: # Returns:
1648: # 1 - indicating that the daemon should not disconnect.
1649: # Side Effects:
1650: # The reply is written to $client.
1651: #
1652: sub ls2_handler {
1653: my ($cmd, $ulsdir, $client) = @_;
1654:
1655: my $userinput = "$cmd:$ulsdir";
1656:
1657: my $obs;
1658: my $rights;
1659: my $ulsout='';
1660: my $ulsfn;
1661: if (-e $ulsdir) {
1662: if(-d $ulsdir) {
1663: if (opendir(LSDIR,$ulsdir)) {
1664: while ($ulsfn=readdir(LSDIR)) {
1.291 albertel 1665: undef($obs);
1666: undef($rights);
1.280 matthew 1667: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1668: #We do some obsolete checking here
1669: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1670: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1671: my @obsolete=<FILE>;
1672: foreach my $obsolete (@obsolete) {
1.301 www 1673: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1.280 matthew 1674: if($obsolete =~ m|(<copyright>)(default)|) {
1675: $rights = 1;
1676: }
1677: }
1678: }
1679: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1680: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1681: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1682: $ulsout.= &escape($tmp).':';
1683: }
1684: closedir(LSDIR);
1685: }
1686: } else {
1687: my @ulsstats=stat($ulsdir);
1688: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1689: }
1690: } else {
1691: $ulsout='no_such_dir';
1692: }
1693: if ($ulsout eq '') { $ulsout='empty'; }
1.387 albertel 1694: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1.280 matthew 1695: return 1;
1696: }
1697: ®ister_handler("ls2", \&ls2_handler, 0, 1, 0);
1.399 raeburn 1698: #
1699: # ls3 - list the contents of a directory. For each file in the
1700: # selected directory the filename followed by the full output of
1701: # the stat function is returned. The returned info for each
1702: # file are separated by ':'. The stat fields are separated by &'s.
1703: # Parameters:
1704: # $cmd - The command that dispatched us (ls).
1705: # $tail - The tail of the request that invoked us.
1706: # $tail is a : separated list of the following:
1707: # - $ulsdir - directory path to list (before prepending)
1708: # - $getpropath = 1 if &propath() should prepend
1709: # - $getuserdir = 1 if path to user dir in lonUsers should
1710: # prepend
1711: # - $alternate_root - path to prepend
1712: # - $uname - username to use for &propath or user dir
1713: # - $udom - domain to use for &propath or user dir
1714: # All of these except $getpropath and &getuserdir are escaped.
1715: # no_such_dir.
1716: # $client - Socket open on the client.
1717: # Returns:
1718: # 1 - indicating that the daemon should not disconnect.
1719: # Side Effects:
1720: # The reply is written to $client.
1721: #
1722:
1723: sub ls3_handler {
1724: my ($cmd, $tail, $client) = @_;
1725: my $userinput = "$cmd:$tail";
1726: my ($ulsdir,$getpropath,$getuserdir,$alternate_root,$uname,$udom) =
1727: split(/:/,$tail);
1728: if (defined($ulsdir)) {
1729: $ulsdir = &unescape($ulsdir);
1730: }
1731: if (defined($alternate_root)) {
1732: $alternate_root = &unescape($alternate_root);
1733: }
1734: if (defined($uname)) {
1735: $uname = &unescape($uname);
1736: }
1737: if (defined($udom)) {
1738: $udom = &unescape($udom);
1739: }
1740:
1741: my $dir_root = $perlvar{'lonDocRoot'};
1742: if ($getpropath) {
1743: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1744: $dir_root = &propath($udom,$uname);
1745: $dir_root =~ s/\/$//;
1746: } else {
1747: &Failure($client,"refused\n","$cmd:$tail");
1748: return 1;
1749: }
1750: } elsif ($getuserdir) {
1751: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1752: my $subdir=$uname.'__';
1753: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
1754: $dir_root = $Apache::lonnet::perlvar{'lonUsersDir'}
1755: ."/$udom/$subdir/$uname";
1756: } else {
1757: &Failure($client,"refused\n","$cmd:$tail");
1758: return 1;
1759: }
1.400 raeburn 1760: } elsif ($alternate_root ne '') {
1.399 raeburn 1761: $dir_root = $alternate_root;
1762: }
1.408 raeburn 1763: if (($dir_root ne '') && ($dir_root ne '/')) {
1.400 raeburn 1764: if ($ulsdir =~ /^\//) {
1765: $ulsdir = $dir_root.$ulsdir;
1766: } else {
1767: $ulsdir = $dir_root.'/'.$ulsdir;
1768: }
1.399 raeburn 1769: }
1770: my $obs;
1771: my $rights;
1772: my $ulsout='';
1773: my $ulsfn;
1774: if (-e $ulsdir) {
1775: if(-d $ulsdir) {
1776: if (opendir(LSDIR,$ulsdir)) {
1777: while ($ulsfn=readdir(LSDIR)) {
1778: undef($obs);
1779: undef($rights);
1780: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1781: #We do some obsolete checking here
1782: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1783: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1784: my @obsolete=<FILE>;
1785: foreach my $obsolete (@obsolete) {
1786: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1787: if($obsolete =~ m|(<copyright>)(default)|) {
1788: $rights = 1;
1789: }
1790: }
1791: }
1792: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1793: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1794: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1795: $ulsout.= &escape($tmp).':';
1796: }
1797: closedir(LSDIR);
1798: }
1799: } else {
1800: my @ulsstats=stat($ulsdir);
1801: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1802: }
1803: } else {
1804: $ulsout='no_such_dir';
1.400 raeburn 1805: }
1806: if ($ulsout eq '') { $ulsout='empty'; }
1807: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1808: return 1;
1.399 raeburn 1809: }
1810: ®ister_handler("ls3", \&ls3_handler, 0, 1, 0);
1.280 matthew 1811:
1.477 raeburn 1812: sub read_lonnet_global {
1813: my ($cmd,$tail,$client) = @_;
1814: my $userinput = "$cmd:$tail";
1815: my $requested = &Apache::lonnet::thaw_unescape($tail);
1816: my $result;
1.480 raeburn 1817: my %packagevars = (
1818: spareid => \%Apache::lonnet::spareid,
1819: perlvar => \%Apache::lonnet::perlvar,
1820: );
1821: my %limit_to = (
1822: perlvar => {
1823: lonOtherAuthen => 1,
1824: lonBalancer => 1,
1825: lonVersion => 1,
1826: lonSysEMail => 1,
1827: lonHostID => 1,
1828: lonRole => 1,
1829: lonDefDomain => 1,
1830: lonLoadLim => 1,
1831: lonUserLoadLim => 1,
1832: }
1833: );
1.477 raeburn 1834: if (ref($requested) eq 'HASH') {
1835: foreach my $what (keys(%{$requested})) {
1836: my $response;
1.480 raeburn 1837: my $items = {};
1838: if (exists($packagevars{$what})) {
1839: if (ref($limit_to{$what}) eq 'HASH') {
1840: foreach my $varname (keys(%{$packagevars{$what}})) {
1841: if ($limit_to{$what}{$varname}) {
1842: $items->{$varname} = $packagevars{$what}{$varname};
1843: }
1844: }
1845: } else {
1846: $items = $packagevars{$what};
1.477 raeburn 1847: }
1.480 raeburn 1848: if ($what eq 'perlvar') {
1849: if (!exists($packagevars{$what}{'lonBalancer'})) {
1850: if ($dist =~ /^(centos|rhes|fedora|scientific)/) {
1851: my $othervarref=LONCAPA::Configuration::read_conf('httpd.conf');
1852: if (ref($othervarref) eq 'HASH') {
1853: $items->{'lonBalancer'} = $othervarref->{'lonBalancer'};
1854: }
1855: }
1856: }
1.477 raeburn 1857: }
1.480 raeburn 1858: $response = &Apache::lonnet::freeze_escape($items);
1.477 raeburn 1859: }
1.478 raeburn 1860: $result .= &escape($what).'='.$response.'&';
1.477 raeburn 1861: }
1862: }
1863: $result =~ s/\&$//;
1864: &Reply($client,\$result,$userinput);
1865: return 1;
1866: }
1867: ®ister_handler("readlonnetglobal", \&read_lonnet_global, 0, 1, 0);
1868:
1.479 raeburn 1869: sub server_devalidatecache_handler {
1870: my ($cmd,$tail,$client) = @_;
1871: my $userinput = "$cmd:$tail";
1.503 raeburn 1872: my $items = &unescape($tail);
1873: my @cached = split(/\&/,$items);
1874: foreach my $key (@cached) {
1875: if ($key =~ /:/) {
1876: my ($name,$id) = map { &unescape($_); } split(/:/,$key);
1877: &Apache::lonnet::devalidate_cache_new($name,$id);
1878: }
1879: }
1.479 raeburn 1880: my $result = 'ok';
1881: &Reply($client,\$result,$userinput);
1882: return 1;
1883: }
1.481 raeburn 1884: ®ister_handler("devalidatecache", \&server_devalidatecache_handler, 0, 1, 0);
1.479 raeburn 1885:
1.410 raeburn 1886: sub server_timezone_handler {
1887: my ($cmd,$tail,$client) = @_;
1888: my $userinput = "$cmd:$tail";
1889: my $timezone;
1890: my $clockfile = '/etc/sysconfig/clock'; # Fedora/CentOS/SuSE
1891: my $tzfile = '/etc/timezone'; # Debian/Ubuntu
1892: if (-e $clockfile) {
1893: if (open(my $fh,"<$clockfile")) {
1894: while (<$fh>) {
1895: next if (/^[\#\s]/);
1896: if (/^(?:TIME)?ZONE\s*=\s*['"]?\s*([\w\/]+)/) {
1897: $timezone = $1;
1898: last;
1899: }
1900: }
1901: close($fh);
1902: }
1903: } elsif (-e $tzfile) {
1904: if (open(my $fh,"<$tzfile")) {
1905: $timezone = <$fh>;
1906: close($fh);
1907: chomp($timezone);
1908: if ($timezone =~ m{^Etc/(\w+)$}) {
1909: $timezone = $1;
1910: }
1911: }
1912: }
1913: &Reply($client,\$timezone,$userinput); # This supports debug logging.
1914: return 1;
1915: }
1916: ®ister_handler("servertimezone", \&server_timezone_handler, 0, 1, 0);
1917:
1.413 raeburn 1918: sub server_loncaparev_handler {
1919: my ($cmd,$tail,$client) = @_;
1920: my $userinput = "$cmd:$tail";
1921: &Reply($client,\$perlvar{'lonVersion'},$userinput);
1922: return 1;
1923: }
1924: ®ister_handler("serverloncaparev", \&server_loncaparev_handler, 0, 1, 0);
1925:
1.448 raeburn 1926: sub server_homeID_handler {
1927: my ($cmd,$tail,$client) = @_;
1928: my $userinput = "$cmd:$tail";
1929: &Reply($client,\$perlvar{'lonHostID'},$userinput);
1930: return 1;
1931: }
1932: ®ister_handler("serverhomeID", \&server_homeID_handler, 0, 1, 0);
1933:
1.471 raeburn 1934: sub server_distarch_handler {
1935: my ($cmd,$tail,$client) = @_;
1936: my $userinput = "$cmd:$tail";
1937: my $reply = &distro_and_arch();
1938: &Reply($client,\$reply,$userinput);
1939: return 1;
1940: }
1941: ®ister_handler("serverdistarch", \&server_distarch_handler, 0, 1, 0);
1942:
1.523 raeburn 1943: sub server_certs_handler {
1944: my ($cmd,$tail,$client) = @_;
1945: my $userinput = "$cmd:$tail";
1946: my $result;
1947: my $result = &LONCAPA::Lond::server_certs(\%perlvar);
1948: &Reply($client,\$result,$userinput);
1949: return;
1950: }
1951: ®ister_handler("servercerts", \&server_certs_handler, 0, 1, 0);
1952:
1.218 foxr 1953: # Process a reinit request. Reinit requests that either
1954: # lonc or lond be reinitialized so that an updated
1955: # host.tab or domain.tab can be processed.
1956: #
1957: # Parameters:
1958: # $cmd - the actual keyword that invoked us.
1959: # $tail - the tail of the request that invoked us.
1960: # $client - File descriptor connected to the client
1961: # Returns:
1962: # 1 - Ok to continue processing.
1963: # 0 - Program should exit
1964: # Implicit output:
1965: # a reply is sent to the client.
1966: #
1967: sub reinit_process_handler {
1968: my ($cmd, $tail, $client) = @_;
1969:
1970: my $userinput = "$cmd:$tail";
1971:
1972: my $cert = &GetCertificate($userinput);
1973: if(&ValidManager($cert)) {
1974: chomp($userinput);
1975: my $reply = &ReinitProcess($userinput);
1.387 albertel 1976: &Reply( $client, \$reply, $userinput);
1.218 foxr 1977: } else {
1978: &Failure( $client, "refused\n", $userinput);
1979: }
1980: return 1;
1981: }
1982: ®ister_handler("reinit", \&reinit_process_handler, 1, 0, 1);
1983:
1984: # Process the editing script for a table edit operation.
1985: # the editing operation must be encrypted and requested by
1986: # a manager host.
1987: #
1988: # Parameters:
1989: # $cmd - the actual keyword that invoked us.
1990: # $tail - the tail of the request that invoked us.
1991: # $client - File descriptor connected to the client
1992: # Returns:
1993: # 1 - Ok to continue processing.
1994: # 0 - Program should exit
1995: # Implicit output:
1996: # a reply is sent to the client.
1997: #
1998: sub edit_table_handler {
1999: my ($command, $tail, $client) = @_;
2000:
2001: my $userinput = "$command:$tail";
2002:
2003: my $cert = &GetCertificate($userinput);
2004: if(&ValidManager($cert)) {
2005: my($filetype, $script) = split(/:/, $tail);
2006: if (($filetype eq "hosts") ||
2007: ($filetype eq "domain")) {
2008: if($script ne "") {
2009: &Reply($client, # BUGBUG - EditFile
2010: &EditFile($userinput), # could fail.
2011: $userinput);
2012: } else {
2013: &Failure($client,"refused\n",$userinput);
2014: }
2015: } else {
2016: &Failure($client,"refused\n",$userinput);
2017: }
2018: } else {
2019: &Failure($client,"refused\n",$userinput);
2020: }
2021: return 1;
2022: }
1.263 albertel 2023: ®ister_handler("edit", \&edit_table_handler, 1, 0, 1);
1.218 foxr 2024:
1.220 foxr 2025: #
2026: # Authenticate a user against the LonCAPA authentication
2027: # database. Note that there are several authentication
2028: # possibilities:
2029: # - unix - The user can be authenticated against the unix
2030: # password file.
2031: # - internal - The user can be authenticated against a purely
2032: # internal per user password file.
2033: # - kerberos - The user can be authenticated against either a kerb4 or kerb5
2034: # ticket granting authority.
2035: # - user - The person tailoring LonCAPA can supply a user authentication
2036: # mechanism that is per system.
2037: #
2038: # Parameters:
2039: # $cmd - The command that got us here.
2040: # $tail - Tail of the command (remaining parameters).
2041: # $client - File descriptor connected to client.
2042: # Returns
2043: # 0 - Requested to exit, caller should shut down.
2044: # 1 - Continue processing.
2045: # Implicit inputs:
2046: # The authentication systems describe above have their own forms of implicit
2047: # input into the authentication process that are described above.
2048: #
2049: sub authenticate_handler {
2050: my ($cmd, $tail, $client) = @_;
2051:
2052:
2053: # Regenerate the full input line
2054:
2055: my $userinput = $cmd.":".$tail;
2056:
2057: # udom - User's domain.
2058: # uname - Username.
2059: # upass - User's password.
1.396 raeburn 2060: # checkdefauth - Pass to validate_user() to try authentication
2061: # with default auth type(s) if no user account.
1.447 raeburn 2062: # clientcancheckhost - Passed by clients with functionality in lonauth.pm
2063: # to check if session can be hosted.
1.220 foxr 2064:
1.447 raeburn 2065: my ($udom, $uname, $upass, $checkdefauth, $clientcancheckhost)=split(/:/,$tail);
1.399 raeburn 2066: &Debug(" Authenticate domain = $udom, user = $uname, password = $upass, checkdefauth = $checkdefauth");
1.220 foxr 2067: chomp($upass);
2068: $upass=&unescape($upass);
2069:
1.396 raeburn 2070: my $pwdcorrect = &validate_user($udom,$uname,$upass,$checkdefauth);
1.220 foxr 2071: if($pwdcorrect) {
1.447 raeburn 2072: my $canhost = 1;
2073: unless ($clientcancheckhost) {
1.448 raeburn 2074: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
2075: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1.452 raeburn 2076: my @intdoms;
2077: my $internet_names = &Apache::lonnet::get_internet_names($clientname);
2078: if (ref($internet_names) eq 'ARRAY') {
2079: @intdoms = @{$internet_names};
2080: }
1.448 raeburn 2081: unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
1.447 raeburn 2082: my ($remote,$hosted);
2083: my $remotesession = &get_usersession_config($udom,'remotesession');
2084: if (ref($remotesession) eq 'HASH') {
1.525 raeburn 2085: $remote = $remotesession->{'remote'};
1.447 raeburn 2086: }
1.448 raeburn 2087: my $hostedsession = &get_usersession_config($clienthomedom,'hostedsession');
1.447 raeburn 2088: if (ref($hostedsession) eq 'HASH') {
2089: $hosted = $hostedsession->{'hosted'};
2090: }
1.448 raeburn 2091: $canhost = &Apache::lonnet::can_host_session($udom,$clientname,
1.492 droeschl 2092: $clientversion,
1.447 raeburn 2093: $remote,$hosted);
2094: }
2095: }
2096: if ($canhost) {
2097: &Reply( $client, "authorized\n", $userinput);
2098: } else {
2099: &Reply( $client, "not_allowed_to_host\n", $userinput);
2100: }
1.220 foxr 2101: #
2102: # Bad credentials: Failed to authorize
2103: #
2104: } else {
2105: &Failure( $client, "non_authorized\n", $userinput);
2106: }
2107:
2108: return 1;
2109: }
1.263 albertel 2110: ®ister_handler("auth", \&authenticate_handler, 1, 1, 0);
1.214 foxr 2111:
1.222 foxr 2112: #
2113: # Change a user's password. Note that this function is complicated by
2114: # the fact that a user may be authenticated in more than one way:
2115: # At present, we are not able to change the password for all types of
2116: # authentication methods. Only for:
2117: # unix - unix password or shadow passoword style authentication.
2118: # local - Locally written authentication mechanism.
2119: # For now, kerb4 and kerb5 password changes are not supported and result
2120: # in an error.
2121: # FUTURE WORK:
2122: # Support kerberos passwd changes?
2123: # Parameters:
2124: # $cmd - The command that got us here.
2125: # $tail - Tail of the command (remaining parameters).
2126: # $client - File descriptor connected to client.
2127: # Returns
2128: # 0 - Requested to exit, caller should shut down.
2129: # 1 - Continue processing.
2130: # Implicit inputs:
2131: # The authentication systems describe above have their own forms of implicit
2132: # input into the authentication process that are described above.
2133: sub change_password_handler {
2134: my ($cmd, $tail, $client) = @_;
2135:
2136: my $userinput = $cmd.":".$tail; # Reconstruct client's string.
2137:
2138: #
2139: # udom - user's domain.
2140: # uname - Username.
2141: # upass - Current password.
2142: # npass - New password.
1.346 raeburn 2143: # context - Context in which this was called
2144: # (preferences or reset_by_email).
1.428 raeburn 2145: # lonhost - HostID of server where request originated
1.222 foxr 2146:
1.428 raeburn 2147: my ($udom,$uname,$upass,$npass,$context,$lonhost)=split(/:/,$tail);
1.222 foxr 2148:
2149: $upass=&unescape($upass);
2150: $npass=&unescape($npass);
2151: &Debug("Trying to change password for $uname");
2152:
2153: # First require that the user can be authenticated with their
1.346 raeburn 2154: # old password unless context was 'reset_by_email':
2155:
1.428 raeburn 2156: my ($validated,$failure);
1.346 raeburn 2157: if ($context eq 'reset_by_email') {
1.428 raeburn 2158: if ($lonhost eq '') {
2159: $failure = 'invalid_client';
2160: } else {
2161: $validated = 1;
2162: }
1.346 raeburn 2163: } else {
2164: $validated = &validate_user($udom, $uname, $upass);
2165: }
1.222 foxr 2166: if($validated) {
2167: my $realpasswd = &get_auth_type($udom, $uname); # Defined since authd.
2168:
2169: my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
2170: if ($howpwd eq 'internal') {
2171: &Debug("internal auth");
1.518 raeburn 2172: my $ncpass = &hash_passwd($udom,$npass);
1.222 foxr 2173: if(&rewrite_password_file($udom, $uname, "internal:$ncpass")) {
1.428 raeburn 2174: my $msg="Result of password change for $uname: pwchange_success";
2175: if ($lonhost) {
2176: $msg .= " - request originated from: $lonhost";
2177: }
2178: &logthis($msg);
1.518 raeburn 2179: &update_passwd_history($uname,$udom,$howpwd,$context);
1.222 foxr 2180: &Reply($client, "ok\n", $userinput);
2181: } else {
2182: &logthis("Unable to open $uname passwd "
2183: ."to change password");
2184: &Failure( $client, "non_authorized\n",$userinput);
2185: }
1.346 raeburn 2186: } elsif ($howpwd eq 'unix' && $context ne 'reset_by_email') {
1.287 foxr 2187: my $result = &change_unix_password($uname, $npass);
1.518 raeburn 2188: if ($result eq 'ok') {
2189: &update_passwd_history($uname,$udom,$howpwd,$context);
2190: }
1.222 foxr 2191: &logthis("Result of password change for $uname: ".
1.287 foxr 2192: $result);
1.387 albertel 2193: &Reply($client, \$result, $userinput);
1.222 foxr 2194: } else {
2195: # this just means that the current password mode is not
2196: # one we know how to change (e.g the kerberos auth modes or
2197: # locally written auth handler).
2198: #
2199: &Failure( $client, "auth_mode_error\n", $userinput);
2200: }
2201:
1.224 foxr 2202: } else {
1.428 raeburn 2203: if ($failure eq '') {
2204: $failure = 'non_authorized';
2205: }
2206: &Failure( $client, "$failure\n", $userinput);
1.222 foxr 2207: }
2208:
2209: return 1;
2210: }
1.263 albertel 2211: ®ister_handler("passwd", \&change_password_handler, 1, 1, 0);
1.222 foxr 2212:
1.518 raeburn 2213: sub hash_passwd {
2214: my ($domain,$plainpass,@rest) = @_;
2215: my ($salt,$cost);
2216: if (@rest) {
2217: $cost = $rest[0];
2218: # salt is first 22 characters, base-64 encoded by bcrypt
2219: my $plainsalt = substr($rest[1],0,22);
2220: $salt = Crypt::Eksblowfish::Bcrypt::de_base64($plainsalt);
2221: } else {
2222: my $defaultcost;
2223: my %domconfig =
2224: &Apache::lonnet::get_dom('configuration',['password'],$domain);
2225: if (ref($domconfig{'password'}) eq 'HASH') {
2226: $defaultcost = $domconfig{'password'}{'cost'};
2227: }
2228: if (($defaultcost eq '') || ($defaultcost =~ /D/)) {
2229: $cost = 10;
2230: } else {
2231: $cost = $defaultcost;
2232: }
2233: # Generate random 16-octet base64 salt
2234: $salt = "";
2235: $salt .= pack("C", int rand(256)) for 1..16;
2236: }
2237: my $hash = &Crypt::Eksblowfish::Bcrypt::bcrypt_hash({
2238: key_nul => 1,
2239: cost => $cost,
2240: salt => $salt,
2241: }, Digest::SHA::sha512(Encode::encode('UTF-8',$plainpass)));
2242:
2243: my $result = join("!", "", "bcrypt", sprintf("%02d",$cost),
2244: &Crypt::Eksblowfish::Bcrypt::en_base64($salt).
2245: &Crypt::Eksblowfish::Bcrypt::en_base64($hash));
2246: return $result;
2247: }
2248:
1.225 foxr 2249: #
2250: # Create a new user. User in this case means a lon-capa user.
2251: # The user must either already exist in some authentication realm
2252: # like kerberos or the /etc/passwd. If not, a user completely local to
2253: # this loncapa system is created.
2254: #
2255: # Parameters:
2256: # $cmd - The command that got us here.
2257: # $tail - Tail of the command (remaining parameters).
2258: # $client - File descriptor connected to client.
2259: # Returns
2260: # 0 - Requested to exit, caller should shut down.
2261: # 1 - Continue processing.
2262: # Implicit inputs:
2263: # The authentication systems describe above have their own forms of implicit
2264: # input into the authentication process that are described above.
2265: sub add_user_handler {
2266:
2267: my ($cmd, $tail, $client) = @_;
2268:
2269:
2270: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2271: my $userinput = $cmd.":".$tail; # Reconstruct the full request line.
2272:
2273: &Debug("cmd =".$cmd." $udom =".$udom." uname=".$uname);
2274:
2275:
2276: if($udom eq $currentdomainid) { # Reject new users for other domains...
2277:
2278: my $oldumask=umask(0077);
2279: chomp($npass);
2280: $npass=&unescape($npass);
2281: my $passfilename = &password_path($udom, $uname);
2282: &Debug("Password file created will be:".$passfilename);
2283: if (-e $passfilename) {
2284: &Failure( $client, "already_exists\n", $userinput);
2285: } else {
2286: my $fperror='';
1.264 albertel 2287: if (!&mkpath($passfilename)) {
2288: $fperror="error: ".($!+0)." mkdir failed while attempting "
2289: ."makeuser";
1.225 foxr 2290: }
2291: unless ($fperror) {
1.518 raeburn 2292: my $result=&make_passwd_file($uname,$udom,$umode,$npass,
2293: $passfilename,'makeuser');
1.390 raeburn 2294: &Reply($client,\$result, $userinput); #BUGBUG - could be fail
1.225 foxr 2295: } else {
1.387 albertel 2296: &Failure($client, \$fperror, $userinput);
1.225 foxr 2297: }
2298: }
2299: umask($oldumask);
2300: } else {
2301: &Failure($client, "not_right_domain\n",
2302: $userinput); # Even if we are multihomed.
2303:
2304: }
2305: return 1;
2306:
2307: }
2308: ®ister_handler("makeuser", \&add_user_handler, 1, 1, 0);
2309:
2310: #
2311: # Change the authentication method of a user. Note that this may
2312: # also implicitly change the user's password if, for example, the user is
2313: # joining an existing authentication realm. Known authentication realms at
2314: # this time are:
2315: # internal - Purely internal password file (only loncapa knows this user)
2316: # local - Institutionally written authentication module.
2317: # unix - Unix user (/etc/passwd with or without /etc/shadow).
2318: # kerb4 - kerberos version 4
2319: # kerb5 - kerberos version 5
2320: #
2321: # Parameters:
2322: # $cmd - The command that got us here.
2323: # $tail - Tail of the command (remaining parameters).
2324: # $client - File descriptor connected to client.
2325: # Returns
2326: # 0 - Requested to exit, caller should shut down.
2327: # 1 - Continue processing.
2328: # Implicit inputs:
2329: # The authentication systems describe above have their own forms of implicit
2330: # input into the authentication process that are described above.
1.287 foxr 2331: # NOTE:
2332: # This is also used to change the authentication credential values (e.g. passwd).
2333: #
1.225 foxr 2334: #
2335: sub change_authentication_handler {
2336:
2337: my ($cmd, $tail, $client) = @_;
2338:
2339: my $userinput = "$cmd:$tail"; # Reconstruct user input.
2340:
2341: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2342: &Debug("cmd = ".$cmd." domain= ".$udom."uname =".$uname." umode= ".$umode);
2343: if ($udom ne $currentdomainid) {
2344: &Failure( $client, "not_right_domain\n", $client);
2345: } else {
2346:
2347: chomp($npass);
2348:
2349: $npass=&unescape($npass);
1.261 foxr 2350: my $oldauth = &get_auth_type($udom, $uname); # Get old auth info.
1.225 foxr 2351: my $passfilename = &password_path($udom, $uname);
2352: if ($passfilename) { # Not allowed to create a new user!!
1.287 foxr 2353: # If just changing the unix passwd. need to arrange to run
1.502 raeburn 2354: # passwd since otherwise make_passwd_file will fail as
2355: # creation of unix authenticated users is no longer supported
2356: # except from the command line, when running make_domain_coordinator.pl
1.287 foxr 2357:
2358: if(($oldauth =~/^unix/) && ($umode eq "unix")) {
2359: my $result = &change_unix_password($uname, $npass);
2360: &logthis("Result of password change for $uname: ".$result);
2361: if ($result eq "ok") {
1.518 raeburn 2362: &update_passwd_history($uname,$udom,$umode,'changeuserauth');
1.390 raeburn 2363: &Reply($client, \$result);
1.288 albertel 2364: } else {
1.387 albertel 2365: &Failure($client, \$result);
1.287 foxr 2366: }
1.288 albertel 2367: } else {
1.518 raeburn 2368: my $result=&make_passwd_file($uname,$udom,$umode,$npass,
2369: $passfilename,'changeuserauth');
1.287 foxr 2370: #
2371: # If the current auth mode is internal, and the old auth mode was
2372: # unix, or krb*, and the user is an author for this domain,
2373: # re-run manage_permissions for that role in order to be able
2374: # to take ownership of the construction space back to www:www
2375: #
1.502 raeburn 2376:
2377:
1.387 albertel 2378: &Reply($client, \$result, $userinput);
1.261 foxr 2379: }
2380:
2381:
1.225 foxr 2382: } else {
1.251 foxr 2383: &Failure($client, "non_authorized\n", $userinput); # Fail the user now.
1.225 foxr 2384: }
2385: }
2386: return 1;
2387: }
2388: ®ister_handler("changeuserauth", \&change_authentication_handler, 1,1, 0);
2389:
1.518 raeburn 2390: sub update_passwd_history {
2391: my ($uname,$udom,$umode,$context) = @_;
2392: my $proname=&propath($udom,$uname);
2393: my $now = time;
2394: if (open(my $fh,">>$proname/passwd.log")) {
2395: print $fh "$now:$umode:$context\n";
2396: close($fh);
2397: }
2398: return;
2399: }
2400:
1.225 foxr 2401: #
2402: # Determines if this is the home server for a user. The home server
2403: # for a user will have his/her lon-capa passwd file. Therefore all we need
2404: # to do is determine if this file exists.
2405: #
2406: # Parameters:
2407: # $cmd - The command that got us here.
2408: # $tail - Tail of the command (remaining parameters).
2409: # $client - File descriptor connected to client.
2410: # Returns
2411: # 0 - Requested to exit, caller should shut down.
2412: # 1 - Continue processing.
2413: # Implicit inputs:
2414: # The authentication systems describe above have their own forms of implicit
2415: # input into the authentication process that are described above.
2416: #
2417: sub is_home_handler {
2418: my ($cmd, $tail, $client) = @_;
2419:
2420: my $userinput = "$cmd:$tail";
2421:
2422: my ($udom,$uname)=split(/:/,$tail);
2423: chomp($uname);
2424: my $passfile = &password_filename($udom, $uname);
2425: if($passfile) {
2426: &Reply( $client, "found\n", $userinput);
2427: } else {
2428: &Failure($client, "not_found\n", $userinput);
2429: }
2430: return 1;
2431: }
2432: ®ister_handler("home", \&is_home_handler, 0,1,0);
2433:
2434: #
1.434 www 2435: # Process an update request for a resource.
2436: # A resource has been modified that we hold a subscription to.
1.225 foxr 2437: # If the resource is not local, then we must update, or at least invalidate our
2438: # cached copy of the resource.
2439: # Parameters:
2440: # $cmd - The command that got us here.
2441: # $tail - Tail of the command (remaining parameters).
2442: # $client - File descriptor connected to client.
2443: # Returns
2444: # 0 - Requested to exit, caller should shut down.
2445: # 1 - Continue processing.
2446: # Implicit inputs:
2447: # The authentication systems describe above have their own forms of implicit
2448: # input into the authentication process that are described above.
2449: #
2450: sub update_resource_handler {
2451:
2452: my ($cmd, $tail, $client) = @_;
2453:
2454: my $userinput = "$cmd:$tail";
2455:
2456: my $fname= $tail; # This allows interactive testing
2457:
2458:
2459: my $ownership=ishome($fname);
2460: if ($ownership eq 'not_owner') {
2461: if (-e $fname) {
1.434 www 2462: # Delete preview file, if exists
2463: unlink("$fname.tmp");
2464: # Get usage stats
1.225 foxr 2465: my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
2466: $atime,$mtime,$ctime,$blksize,$blocks)=stat($fname);
2467: my $now=time;
2468: my $since=$now-$atime;
1.434 www 2469: # If the file has not been used within lonExpire seconds,
2470: # unsubscribe from it and delete local copy
1.225 foxr 2471: if ($since>$perlvar{'lonExpire'}) {
1.365 albertel 2472: my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
1.308 albertel 2473: &devalidate_meta_cache($fname);
1.225 foxr 2474: unlink("$fname");
1.334 albertel 2475: unlink("$fname.meta");
1.225 foxr 2476: } else {
1.434 www 2477: # Yes, this is in active use. Get a fresh copy. Since it might be in
2478: # very active use and huge (like a movie), copy it to "in.transfer" filename first.
1.225 foxr 2479: my $transname="$fname.in.transfer";
1.365 albertel 2480: my $remoteurl=&Apache::lonnet::reply("sub:$fname","$clientname");
1.225 foxr 2481: my $response;
1.455 www 2482: # FIXME: cannot replicate files that take more than two minutes to transfer?
2483: # alarm(120);
2484: # FIXME: this should use the LWP mechanism, not internal alarms.
2485: alarm(1200);
1.225 foxr 2486: {
2487: my $request=new HTTP::Request('GET',"$remoteurl");
1.523 raeburn 2488: $response=&LONCAPA::LWPReq::makerequest($clientname,$request,$transname,\%perlvar,1200,0,1);
1.225 foxr 2489: }
2490: alarm(0);
2491: if ($response->is_error()) {
1.455 www 2492: # FIXME: we should probably clean up here instead of just whine
1.225 foxr 2493: unlink($transname);
2494: my $message=$response->status_line;
2495: &logthis("LWP GET: $message for $fname ($remoteurl)");
2496: } else {
2497: if ($remoteurl!~/\.meta$/) {
1.455 www 2498: # FIXME: isn't there an internal LWP mechanism for this?
1.225 foxr 2499: alarm(120);
2500: {
2501: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
1.523 raeburn 2502: my $mresponse = &LONCAPA::LWPReq::makerequest($clientname,$mrequest,$fname.'.meta',\%perlvar,120,0,1);
1.225 foxr 2503: if ($mresponse->is_error()) {
2504: unlink($fname.'.meta');
2505: }
2506: }
2507: alarm(0);
2508: }
1.434 www 2509: # we successfully transfered, copy file over to real name
1.225 foxr 2510: rename($transname,$fname);
1.308 albertel 2511: &devalidate_meta_cache($fname);
1.225 foxr 2512: }
2513: }
2514: &Reply( $client, "ok\n", $userinput);
2515: } else {
2516: &Failure($client, "not_found\n", $userinput);
2517: }
2518: } else {
2519: &Failure($client, "rejected\n", $userinput);
2520: }
2521: return 1;
2522: }
2523: ®ister_handler("update", \&update_resource_handler, 0 ,1, 0);
2524:
1.308 albertel 2525: sub devalidate_meta_cache {
2526: my ($url) = @_;
2527: use Cache::Memcached;
2528: my $memcache = new Cache::Memcached({'servers'=>['127.0.0.1:11211']});
1.365 albertel 2529: $url = &Apache::lonnet::declutter($url);
1.308 albertel 2530: $url =~ s-\.meta$--;
2531: my $id = &escape('meta:'.$url);
2532: $memcache->delete($id);
2533: }
2534:
1.225 foxr 2535: #
1.226 foxr 2536: # Fetch a user file from a remote server to the user's home directory
2537: # userfiles subdir.
1.225 foxr 2538: # Parameters:
2539: # $cmd - The command that got us here.
2540: # $tail - Tail of the command (remaining parameters).
2541: # $client - File descriptor connected to client.
2542: # Returns
2543: # 0 - Requested to exit, caller should shut down.
2544: # 1 - Continue processing.
2545: #
2546: sub fetch_user_file_handler {
2547:
2548: my ($cmd, $tail, $client) = @_;
2549:
2550: my $userinput = "$cmd:$tail";
2551: my $fname = $tail;
1.232 foxr 2552: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
1.225 foxr 2553: my $udir=&propath($udom,$uname).'/userfiles';
2554: unless (-e $udir) {
2555: mkdir($udir,0770);
2556: }
1.232 foxr 2557: Debug("fetch user file for $fname");
1.225 foxr 2558: if (-e $udir) {
2559: $ufile=~s/^[\.\~]+//;
1.232 foxr 2560:
2561: # IF necessary, create the path right down to the file.
2562: # Note that any regular files in the way of this path are
2563: # wiped out to deal with some earlier folly of mine.
2564:
1.267 raeburn 2565: if (!&mkpath($udir.'/'.$ufile)) {
1.264 albertel 2566: &Failure($client, "unable_to_create\n", $userinput);
1.232 foxr 2567: }
2568:
1.225 foxr 2569: my $destname=$udir.'/'.$ufile;
2570: my $transname=$udir.'/'.$ufile.'.in.transit';
1.476 raeburn 2571: my $clientprotocol=$Apache::lonnet::protocol{$clientname};
2572: $clientprotocol = 'http' if ($clientprotocol ne 'https');
1.486 raeburn 2573: my $clienthost = &Apache::lonnet::hostname($clientname);
2574: my $remoteurl=$clientprotocol.'://'.$clienthost.'/userfiles/'.$fname;
1.225 foxr 2575: my $response;
1.232 foxr 2576: Debug("Remote URL : $remoteurl Transfername $transname Destname: $destname");
1.523 raeburn 2577: alarm(1200);
1.225 foxr 2578: {
2579: my $request=new HTTP::Request('GET',"$remoteurl");
1.523 raeburn 2580: my $verifycert = 1;
2581: my @machine_ids = &Apache::lonnet::current_machine_ids();
2582: if (grep(/^\Q$clientname\E$/,@machine_ids)) {
2583: $verifycert = 0;
2584: }
2585: $response = &LONCAPA::LWPReq::makerequest($clientname,$request,$transname,\%perlvar,1200,$verifycert);
1.225 foxr 2586: }
2587: alarm(0);
2588: if ($response->is_error()) {
2589: unlink($transname);
2590: my $message=$response->status_line;
2591: &logthis("LWP GET: $message for $fname ($remoteurl)");
2592: &Failure($client, "failed\n", $userinput);
2593: } else {
1.232 foxr 2594: Debug("Renaming $transname to $destname");
1.225 foxr 2595: if (!rename($transname,$destname)) {
2596: &logthis("Unable to move $transname to $destname");
2597: unlink($transname);
2598: &Failure($client, "failed\n", $userinput);
2599: } else {
1.495 raeburn 2600: if ($fname =~ /^default.+\.(page|sequence)$/) {
2601: my ($major,$minor) = split(/\./,$clientversion);
2602: if (($major < 2) || ($major == 2 && $minor < 11)) {
2603: my $now = time;
2604: &Apache::lonnet::do_cache_new('crschange',$udom.'_'.$uname,$now,600);
2605: my $key = &escape('internal.contentchange');
2606: my $what = "$key=$now";
2607: my $hashref = &tie_user_hash($udom,$uname,'environment',
2608: &GDBM_WRCREAT(),"P",$what);
2609: if ($hashref) {
2610: $hashref->{$key}=$now;
2611: if (!&untie_user_hash($hashref)) {
2612: &logthis("error: ".($!+0)." untie (GDBM) failed ".
2613: "when updating internal.contentchange");
2614: }
2615: }
2616: }
2617: }
1.225 foxr 2618: &Reply($client, "ok\n", $userinput);
2619: }
2620: }
2621: } else {
2622: &Failure($client, "not_home\n", $userinput);
2623: }
2624: return 1;
2625: }
2626: ®ister_handler("fetchuserfile", \&fetch_user_file_handler, 0, 1, 0);
2627:
1.226 foxr 2628: #
2629: # Remove a file from a user's home directory userfiles subdirectory.
2630: # Parameters:
2631: # cmd - the Lond request keyword that got us here.
2632: # tail - the part of the command past the keyword.
2633: # client- File descriptor connected with the client.
2634: #
2635: # Returns:
2636: # 1 - Continue processing.
2637: sub remove_user_file_handler {
2638: my ($cmd, $tail, $client) = @_;
2639:
2640: my ($fname) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2641:
2642: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
2643: if ($ufile =~m|/\.\./|) {
2644: # any files paths with /../ in them refuse
2645: # to deal with
2646: &Failure($client, "refused\n", "$cmd:$tail");
2647: } else {
2648: my $udir = &propath($udom,$uname);
2649: if (-e $udir) {
2650: my $file=$udir.'/userfiles/'.$ufile;
2651: if (-e $file) {
1.253 foxr 2652: #
2653: # If the file is a regular file unlink is fine...
1.520 raeburn 2654: # However it's possible the client wants a dir
2655: # removed, in which case rmdir is more appropriate.
2656: # Note: rmdir will only remove an empty directory.
1.253 foxr 2657: #
1.240 banghart 2658: if (-f $file){
1.241 albertel 2659: unlink($file);
1.520 raeburn 2660: # for html files remove the associated .bak file
2661: # which may have been created by the editor.
2662: if ($ufile =~ m{^((docs|supplemental)/(?:\d+|default)/\d+(?:|/.+)/)[^/]+\.x?html?$}i) {
2663: my $path = $1;
2664: if (-e $file.'.bak') {
2665: unlink($file.'.bak');
2666: }
2667: }
1.241 albertel 2668: } elsif(-d $file) {
2669: rmdir($file);
1.240 banghart 2670: }
1.226 foxr 2671: if (-e $file) {
1.253 foxr 2672: # File is still there after we deleted it ?!?
2673:
1.226 foxr 2674: &Failure($client, "failed\n", "$cmd:$tail");
2675: } else {
2676: &Reply($client, "ok\n", "$cmd:$tail");
2677: }
2678: } else {
2679: &Failure($client, "not_found\n", "$cmd:$tail");
2680: }
2681: } else {
2682: &Failure($client, "not_home\n", "$cmd:$tail");
2683: }
2684: }
2685: return 1;
2686: }
2687: ®ister_handler("removeuserfile", \&remove_user_file_handler, 0,1,0);
2688:
1.236 albertel 2689: #
2690: # make a directory in a user's home directory userfiles subdirectory.
2691: # Parameters:
2692: # cmd - the Lond request keyword that got us here.
2693: # tail - the part of the command past the keyword.
2694: # client- File descriptor connected with the client.
2695: #
2696: # Returns:
2697: # 1 - Continue processing.
2698: sub mkdir_user_file_handler {
2699: my ($cmd, $tail, $client) = @_;
2700:
2701: my ($dir) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2702: $dir=&unescape($dir);
2703: my ($udom,$uname,$ufile) = ($dir =~ m|^([^/]+)/([^/]+)/(.+)$|);
2704: if ($ufile =~m|/\.\./|) {
2705: # any files paths with /../ in them refuse
2706: # to deal with
2707: &Failure($client, "refused\n", "$cmd:$tail");
2708: } else {
2709: my $udir = &propath($udom,$uname);
2710: if (-e $udir) {
1.264 albertel 2711: my $newdir=$udir.'/userfiles/'.$ufile.'/';
2712: if (!&mkpath($newdir)) {
2713: &Failure($client, "failed\n", "$cmd:$tail");
1.236 albertel 2714: }
1.264 albertel 2715: &Reply($client, "ok\n", "$cmd:$tail");
1.236 albertel 2716: } else {
2717: &Failure($client, "not_home\n", "$cmd:$tail");
2718: }
2719: }
2720: return 1;
2721: }
2722: ®ister_handler("mkdiruserfile", \&mkdir_user_file_handler, 0,1,0);
2723:
1.237 albertel 2724: #
2725: # rename a file in a user's home directory userfiles subdirectory.
2726: # Parameters:
2727: # cmd - the Lond request keyword that got us here.
2728: # tail - the part of the command past the keyword.
2729: # client- File descriptor connected with the client.
2730: #
2731: # Returns:
2732: # 1 - Continue processing.
2733: sub rename_user_file_handler {
2734: my ($cmd, $tail, $client) = @_;
2735:
2736: my ($udom,$uname,$old,$new) = split(/:/, $tail);
2737: $old=&unescape($old);
2738: $new=&unescape($new);
2739: if ($new =~m|/\.\./| || $old =~m|/\.\./|) {
2740: # any files paths with /../ in them refuse to deal with
2741: &Failure($client, "refused\n", "$cmd:$tail");
2742: } else {
2743: my $udir = &propath($udom,$uname);
2744: if (-e $udir) {
2745: my $oldfile=$udir.'/userfiles/'.$old;
2746: my $newfile=$udir.'/userfiles/'.$new;
2747: if (-e $newfile) {
2748: &Failure($client, "exists\n", "$cmd:$tail");
2749: } elsif (! -e $oldfile) {
2750: &Failure($client, "not_found\n", "$cmd:$tail");
2751: } else {
2752: if (!rename($oldfile,$newfile)) {
2753: &Failure($client, "failed\n", "$cmd:$tail");
2754: } else {
2755: &Reply($client, "ok\n", "$cmd:$tail");
2756: }
2757: }
2758: } else {
2759: &Failure($client, "not_home\n", "$cmd:$tail");
2760: }
2761: }
2762: return 1;
2763: }
2764: ®ister_handler("renameuserfile", \&rename_user_file_handler, 0,1,0);
2765:
1.227 foxr 2766: #
1.382 albertel 2767: # Checks if the specified user has an active session on the server
2768: # return ok if so, not_found if not
2769: #
2770: # Parameters:
2771: # cmd - The request keyword that dispatched to tus.
2772: # tail - The tail of the request (colon separated parameters).
2773: # client - Filehandle open on the client.
2774: # Return:
2775: # 1.
2776: sub user_has_session_handler {
2777: my ($cmd, $tail, $client) = @_;
2778:
2779: my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail));
2780:
2781: opendir(DIR,$perlvar{'lonIDsDir'});
2782: my $filename;
2783: while ($filename=readdir(DIR)) {
2784: last if ($filename=~/^\Q$uname\E_\d+_\Q$udom\E_/);
2785: }
2786: if ($filename) {
2787: &Reply($client, "ok\n", "$cmd:$tail");
2788: } else {
2789: &Failure($client, "not_found\n", "$cmd:$tail");
2790: }
2791: return 1;
2792:
2793: }
2794: ®ister_handler("userhassession", \&user_has_session_handler, 0,1,0);
2795:
2796: #
1.263 albertel 2797: # Authenticate access to a user file by checking that the token the user's
2798: # passed also exists in their session file
1.227 foxr 2799: #
2800: # Parameters:
2801: # cmd - The request keyword that dispatched to tus.
2802: # tail - The tail of the request (colon separated parameters).
2803: # client - Filehandle open on the client.
2804: # Return:
2805: # 1.
2806: sub token_auth_user_file_handler {
2807: my ($cmd, $tail, $client) = @_;
2808:
2809: my ($fname, $session) = split(/:/, $tail);
2810:
2811: chomp($session);
1.393 raeburn 2812: my $reply="non_auth";
1.343 albertel 2813: my $file = $perlvar{'lonIDsDir'}.'/'.$session.'.id';
2814: if (open(ENVIN,"$file")) {
1.332 albertel 2815: flock(ENVIN,LOCK_SH);
1.343 albertel 2816: tie(my %disk_env,'GDBM_File',"$file",&GDBM_READER(),0640);
2817: if (exists($disk_env{"userfile.$fname"})) {
1.393 raeburn 2818: $reply="ok";
1.343 albertel 2819: } else {
2820: foreach my $envname (keys(%disk_env)) {
2821: if ($envname=~ m|^userfile\.\Q$fname\E|) {
1.393 raeburn 2822: $reply="ok";
1.343 albertel 2823: last;
2824: }
2825: }
1.227 foxr 2826: }
1.343 albertel 2827: untie(%disk_env);
1.227 foxr 2828: close(ENVIN);
1.387 albertel 2829: &Reply($client, \$reply, "$cmd:$tail");
1.227 foxr 2830: } else {
2831: &Failure($client, "invalid_token\n", "$cmd:$tail");
2832: }
2833: return 1;
2834:
2835: }
2836: ®ister_handler("tokenauthuserfile", \&token_auth_user_file_handler, 0,1,0);
1.229 foxr 2837:
2838: #
2839: # Unsubscribe from a resource.
2840: #
2841: # Parameters:
2842: # $cmd - The command that got us here.
2843: # $tail - Tail of the command (remaining parameters).
2844: # $client - File descriptor connected to client.
2845: # Returns
2846: # 0 - Requested to exit, caller should shut down.
2847: # 1 - Continue processing.
2848: #
2849: sub unsubscribe_handler {
2850: my ($cmd, $tail, $client) = @_;
2851:
2852: my $userinput= "$cmd:$tail";
2853:
2854: my ($fname) = split(/:/,$tail); # Split in case there's extrs.
2855:
2856: &Debug("Unsubscribing $fname");
2857: if (-e $fname) {
2858: &Debug("Exists");
2859: &Reply($client, &unsub($fname,$clientip), $userinput);
2860: } else {
2861: &Failure($client, "not_found\n", $userinput);
2862: }
2863: return 1;
2864: }
2865: ®ister_handler("unsub", \&unsubscribe_handler, 0, 1, 0);
1.263 albertel 2866:
1.230 foxr 2867: # Subscribe to a resource
2868: #
2869: # Parameters:
2870: # $cmd - The command that got us here.
2871: # $tail - Tail of the command (remaining parameters).
2872: # $client - File descriptor connected to client.
2873: # Returns
2874: # 0 - Requested to exit, caller should shut down.
2875: # 1 - Continue processing.
2876: #
2877: sub subscribe_handler {
2878: my ($cmd, $tail, $client)= @_;
2879:
2880: my $userinput = "$cmd:$tail";
2881:
2882: &Reply( $client, &subscribe($userinput,$clientip), $userinput);
2883:
2884: return 1;
2885: }
2886: ®ister_handler("sub", \&subscribe_handler, 0, 1, 0);
2887:
2888: #
1.379 albertel 2889: # Determine the latest version of a resource (it looks for the highest
2890: # past version and then returns that +1)
1.230 foxr 2891: #
2892: # Parameters:
2893: # $cmd - The command that got us here.
2894: # $tail - Tail of the command (remaining parameters).
1.379 albertel 2895: # (Should consist of an absolute path to a file)
1.230 foxr 2896: # $client - File descriptor connected to client.
2897: # Returns
2898: # 0 - Requested to exit, caller should shut down.
2899: # 1 - Continue processing.
2900: #
2901: sub current_version_handler {
2902: my ($cmd, $tail, $client) = @_;
2903:
2904: my $userinput= "$cmd:$tail";
2905:
2906: my $fname = $tail;
2907: &Reply( $client, ¤tversion($fname)."\n", $userinput);
2908: return 1;
2909:
2910: }
2911: ®ister_handler("currentversion", \¤t_version_handler, 0, 1, 0);
2912:
2913: # Make an entry in a user's activity log.
2914: #
2915: # Parameters:
2916: # $cmd - The command that got us here.
2917: # $tail - Tail of the command (remaining parameters).
2918: # $client - File descriptor connected to client.
2919: # Returns
2920: # 0 - Requested to exit, caller should shut down.
2921: # 1 - Continue processing.
2922: #
2923: sub activity_log_handler {
2924: my ($cmd, $tail, $client) = @_;
2925:
2926:
2927: my $userinput= "$cmd:$tail";
2928:
2929: my ($udom,$uname,$what)=split(/:/,$tail);
2930: chomp($what);
2931: my $proname=&propath($udom,$uname);
2932: my $now=time;
2933: my $hfh;
2934: if ($hfh=IO::File->new(">>$proname/activity.log")) {
2935: print $hfh "$now:$clientname:$what\n";
2936: &Reply( $client, "ok\n", $userinput);
2937: } else {
2938: &Failure($client, "error: ".($!+0)." IO::File->new Failed "
2939: ."while attempting log\n",
2940: $userinput);
2941: }
2942:
2943: return 1;
2944: }
1.263 albertel 2945: ®ister_handler("log", \&activity_log_handler, 0, 1, 0);
1.230 foxr 2946:
2947: #
2948: # Put a namespace entry in a user profile hash.
2949: # My druthers would be for this to be an encrypted interaction too.
2950: # anything that might be an inadvertent covert channel about either
2951: # user authentication or user personal information....
2952: #
2953: # Parameters:
2954: # $cmd - The command that got us here.
2955: # $tail - Tail of the command (remaining parameters).
2956: # $client - File descriptor connected to client.
2957: # Returns
2958: # 0 - Requested to exit, caller should shut down.
2959: # 1 - Continue processing.
2960: #
2961: sub put_user_profile_entry {
2962: my ($cmd, $tail, $client) = @_;
1.229 foxr 2963:
1.230 foxr 2964: my $userinput = "$cmd:$tail";
2965:
1.242 raeburn 2966: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
1.230 foxr 2967: if ($namespace ne 'roles') {
2968: chomp($what);
2969: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2970: &GDBM_WRCREAT(),"P",$what);
2971: if($hashref) {
2972: my @pairs=split(/\&/,$what);
2973: foreach my $pair (@pairs) {
2974: my ($key,$value)=split(/=/,$pair);
2975: $hashref->{$key}=$value;
2976: }
1.311 albertel 2977: if (&untie_user_hash($hashref)) {
1.230 foxr 2978: &Reply( $client, "ok\n", $userinput);
2979: } else {
2980: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
2981: "while attempting put\n",
2982: $userinput);
2983: }
2984: } else {
1.316 albertel 2985: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.230 foxr 2986: "while attempting put\n", $userinput);
2987: }
2988: } else {
2989: &Failure( $client, "refused\n", $userinput);
2990: }
2991:
2992: return 1;
2993: }
2994: ®ister_handler("put", \&put_user_profile_entry, 0, 1, 0);
2995:
1.283 albertel 2996: # Put a piece of new data in hash, returns error if entry already exists
2997: # Parameters:
2998: # $cmd - The command that got us here.
2999: # $tail - Tail of the command (remaining parameters).
3000: # $client - File descriptor connected to client.
3001: # Returns
3002: # 0 - Requested to exit, caller should shut down.
3003: # 1 - Continue processing.
3004: #
3005: sub newput_user_profile_entry {
3006: my ($cmd, $tail, $client) = @_;
3007:
3008: my $userinput = "$cmd:$tail";
3009:
3010: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
3011: if ($namespace eq 'roles') {
3012: &Failure( $client, "refused\n", $userinput);
3013: return 1;
3014: }
3015:
3016: chomp($what);
3017:
3018: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3019: &GDBM_WRCREAT(),"N",$what);
3020: if(!$hashref) {
1.316 albertel 3021: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.283 albertel 3022: "while attempting put\n", $userinput);
3023: return 1;
3024: }
3025:
3026: my @pairs=split(/\&/,$what);
3027: foreach my $pair (@pairs) {
3028: my ($key,$value)=split(/=/,$pair);
3029: if (exists($hashref->{$key})) {
1.513 raeburn 3030: if (!&untie_user_hash($hashref)) {
3031: &logthis("error: ".($!+0)." untie (GDBM) failed ".
3032: "while attempting newput - early out as key exists");
3033: }
3034: &Failure($client, "key_exists: ".$key."\n",$userinput);
3035: return 1;
1.283 albertel 3036: }
3037: }
3038:
3039: foreach my $pair (@pairs) {
3040: my ($key,$value)=split(/=/,$pair);
3041: $hashref->{$key}=$value;
3042: }
3043:
1.311 albertel 3044: if (&untie_user_hash($hashref)) {
1.283 albertel 3045: &Reply( $client, "ok\n", $userinput);
3046: } else {
3047: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
3048: "while attempting put\n",
3049: $userinput);
3050: }
3051: return 1;
3052: }
3053: ®ister_handler("newput", \&newput_user_profile_entry, 0, 1, 0);
3054:
1.230 foxr 3055: #
3056: # Increment a profile entry in the user history file.
3057: # The history contains keyword value pairs. In this case,
3058: # The value itself is a pair of numbers. The first, the current value
3059: # the second an increment that this function applies to the current
3060: # value.
3061: #
3062: # Parameters:
3063: # $cmd - The command that got us here.
3064: # $tail - Tail of the command (remaining parameters).
3065: # $client - File descriptor connected to client.
3066: # Returns
3067: # 0 - Requested to exit, caller should shut down.
3068: # 1 - Continue processing.
3069: #
3070: sub increment_user_value_handler {
3071: my ($cmd, $tail, $client) = @_;
3072:
3073: my $userinput = "$cmd:$tail";
3074:
3075: my ($udom,$uname,$namespace,$what) =split(/:/,$tail);
3076: if ($namespace ne 'roles') {
3077: chomp($what);
3078: my $hashref = &tie_user_hash($udom, $uname,
3079: $namespace, &GDBM_WRCREAT(),
3080: "P",$what);
3081: if ($hashref) {
3082: my @pairs=split(/\&/,$what);
3083: foreach my $pair (@pairs) {
3084: my ($key,$value)=split(/=/,$pair);
1.284 raeburn 3085: $value = &unescape($value);
1.230 foxr 3086: # We could check that we have a number...
3087: if (! defined($value) || $value eq '') {
3088: $value = 1;
3089: }
3090: $hashref->{$key}+=$value;
1.284 raeburn 3091: if ($namespace eq 'nohist_resourcetracker') {
3092: if ($hashref->{$key} < 0) {
3093: $hashref->{$key} = 0;
3094: }
3095: }
1.230 foxr 3096: }
1.311 albertel 3097: if (&untie_user_hash($hashref)) {
1.230 foxr 3098: &Reply( $client, "ok\n", $userinput);
3099: } else {
3100: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
3101: "while attempting inc\n", $userinput);
3102: }
3103: } else {
3104: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3105: "while attempting inc\n", $userinput);
3106: }
3107: } else {
3108: &Failure($client, "refused\n", $userinput);
3109: }
3110:
3111: return 1;
3112: }
3113: ®ister_handler("inc", \&increment_user_value_handler, 0, 1, 0);
3114:
3115: #
3116: # Put a new role for a user. Roles are LonCAPA's packaging of permissions.
3117: # Each 'role' a user has implies a set of permissions. Adding a new role
3118: # for a person grants the permissions packaged with that role
3119: # to that user when the role is selected.
3120: #
3121: # Parameters:
3122: # $cmd - The command string (rolesput).
3123: # $tail - The remainder of the request line. For rolesput this
3124: # consists of a colon separated list that contains:
3125: # The domain and user that is granting the role (logged).
3126: # The domain and user that is getting the role.
3127: # The roles being granted as a set of & separated pairs.
3128: # each pair a key value pair.
3129: # $client - File descriptor connected to the client.
3130: # Returns:
3131: # 0 - If the daemon should exit
3132: # 1 - To continue processing.
3133: #
3134: #
3135: sub roles_put_handler {
3136: my ($cmd, $tail, $client) = @_;
3137:
3138: my $userinput = "$cmd:$tail";
3139:
3140: my ( $exedom, $exeuser, $udom, $uname, $what) = split(/:/,$tail);
3141:
3142:
3143: my $namespace='roles';
3144: chomp($what);
3145: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3146: &GDBM_WRCREAT(), "P",
3147: "$exedom:$exeuser:$what");
3148: #
3149: # Log the attempt to set a role. The {}'s here ensure that the file
3150: # handle is open for the minimal amount of time. Since the flush
3151: # is done on close this improves the chances the log will be an un-
3152: # corrupted ordered thing.
3153: if ($hashref) {
1.261 foxr 3154: my $pass_entry = &get_auth_type($udom, $uname);
3155: my ($auth_type,$pwd) = split(/:/, $pass_entry);
3156: $auth_type = $auth_type.":";
1.230 foxr 3157: my @pairs=split(/\&/,$what);
3158: foreach my $pair (@pairs) {
3159: my ($key,$value)=split(/=/,$pair);
3160: &manage_permissions($key, $udom, $uname,
1.260 foxr 3161: $auth_type);
1.230 foxr 3162: $hashref->{$key}=$value;
3163: }
1.311 albertel 3164: if (&untie_user_hash($hashref)) {
1.230 foxr 3165: &Reply($client, "ok\n", $userinput);
3166: } else {
3167: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3168: "while attempting rolesput\n", $userinput);
3169: }
3170: } else {
3171: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3172: "while attempting rolesput\n", $userinput);
3173: }
3174: return 1;
3175: }
3176: ®ister_handler("rolesput", \&roles_put_handler, 1,1,0); # Encoded client only.
3177:
3178: #
1.231 foxr 3179: # Deletes (removes) a role for a user. This is equivalent to removing
3180: # a permissions package associated with the role from the user's profile.
3181: #
3182: # Parameters:
3183: # $cmd - The command (rolesdel)
3184: # $tail - The remainder of the request line. This consists
3185: # of:
3186: # The domain and user requesting the change (logged)
3187: # The domain and user being changed.
3188: # The roles being revoked. These are shipped to us
3189: # as a bunch of & separated role name keywords.
3190: # $client - The file handle open on the client.
3191: # Returns:
3192: # 1 - Continue processing
3193: # 0 - Exit.
3194: #
3195: sub roles_delete_handler {
3196: my ($cmd, $tail, $client) = @_;
3197:
3198: my $userinput = "$cmd:$tail";
3199:
3200: my ($exedom,$exeuser,$udom,$uname,$what)=split(/:/,$tail);
3201: &Debug("cmd = ".$cmd." exedom= ".$exedom."user = ".$exeuser." udom=".$udom.
3202: "what = ".$what);
3203: my $namespace='roles';
3204: chomp($what);
3205: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3206: &GDBM_WRCREAT(), "D",
3207: "$exedom:$exeuser:$what");
3208:
3209: if ($hashref) {
3210: my @rolekeys=split(/\&/,$what);
3211:
3212: foreach my $key (@rolekeys) {
3213: delete $hashref->{$key};
3214: }
1.315 albertel 3215: if (&untie_user_hash($hashref)) {
1.231 foxr 3216: &Reply($client, "ok\n", $userinput);
3217: } else {
3218: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3219: "while attempting rolesdel\n", $userinput);
3220: }
3221: } else {
3222: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3223: "while attempting rolesdel\n", $userinput);
3224: }
3225:
3226: return 1;
3227: }
3228: ®ister_handler("rolesdel", \&roles_delete_handler, 1,1, 0); # Encoded client only
3229:
3230: # Unencrypted get from a user's profile database. See
3231: # GetProfileEntryEncrypted for a version that does end-to-end encryption.
3232: # This function retrieves a keyed item from a specific named database in the
3233: # user's directory.
3234: #
3235: # Parameters:
3236: # $cmd - Command request keyword (get).
3237: # $tail - Tail of the command. This is a colon separated list
3238: # consisting of the domain and username that uniquely
3239: # identifies the profile,
3240: # The 'namespace' which selects the gdbm file to
3241: # do the lookup in,
3242: # & separated list of keys to lookup. Note that
3243: # the values are returned as an & separated list too.
3244: # $client - File descriptor open on the client.
3245: # Returns:
3246: # 1 - Continue processing.
3247: # 0 - Exit.
3248: #
3249: sub get_profile_entry {
3250: my ($cmd, $tail, $client) = @_;
3251:
3252: my $userinput= "$cmd:$tail";
3253:
3254: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3255: chomp($what);
1.255 foxr 3256:
1.390 raeburn 3257:
1.255 foxr 3258: my $replystring = read_profile($udom, $uname, $namespace, $what);
3259: my ($first) = split(/:/,$replystring);
3260: if($first ne "error") {
1.387 albertel 3261: &Reply($client, \$replystring, $userinput);
1.231 foxr 3262: } else {
1.255 foxr 3263: &Failure($client, $replystring." while attempting get\n", $userinput);
1.231 foxr 3264: }
3265: return 1;
1.255 foxr 3266:
3267:
1.231 foxr 3268: }
3269: ®ister_handler("get", \&get_profile_entry, 0,1,0);
3270:
3271: #
3272: # Process the encrypted get request. Note that the request is sent
3273: # in clear, but the reply is encrypted. This is a small covert channel:
3274: # information about the sensitive keys is given to the snooper. Just not
3275: # information about the values of the sensitive key. Hmm if I wanted to
3276: # know these I'd snoop for the egets. Get the profile item names from them
3277: # and then issue a get for them since there's no enforcement of the
3278: # requirement of an encrypted get for particular profile items. If I
3279: # were re-doing this, I'd force the request to be encrypted as well as the
3280: # reply. I'd also just enforce encrypted transactions for all gets since
3281: # that would prevent any covert channel snooping.
3282: #
3283: # Parameters:
3284: # $cmd - Command keyword of request (eget).
3285: # $tail - Tail of the command. See GetProfileEntry
# for more information about this.
3286: # $client - File open on the client.
3287: # Returns:
3288: # 1 - Continue processing
3289: # 0 - server should exit.
3290: sub get_profile_entry_encrypted {
3291: my ($cmd, $tail, $client) = @_;
3292:
3293: my $userinput = "$cmd:$tail";
3294:
1.339 albertel 3295: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
1.231 foxr 3296: chomp($what);
1.255 foxr 3297: my $qresult = read_profile($udom, $uname, $namespace, $what);
3298: my ($first) = split(/:/, $qresult);
3299: if($first ne "error") {
3300:
3301: if ($cipher) {
3302: my $cmdlength=length($qresult);
3303: $qresult.=" ";
3304: my $encqresult='';
3305: for(my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
3306: $encqresult.= unpack("H16",
3307: $cipher->encrypt(substr($qresult,
3308: $encidx,
3309: 8)));
3310: }
3311: &Reply( $client, "enc:$cmdlength:$encqresult\n", $userinput);
3312: } else {
1.231 foxr 3313: &Failure( $client, "error:no_key\n", $userinput);
3314: }
3315: } else {
1.255 foxr 3316: &Failure($client, "$qresult while attempting eget\n", $userinput);
3317:
1.231 foxr 3318: }
3319:
3320: return 1;
3321: }
1.255 foxr 3322: ®ister_handler("eget", \&get_profile_entry_encrypted, 0, 1, 0);
1.263 albertel 3323:
1.231 foxr 3324: #
3325: # Deletes a key in a user profile database.
3326: #
3327: # Parameters:
3328: # $cmd - Command keyword (del).
3329: # $tail - Command tail. IN this case a colon
3330: # separated list containing:
3331: # The domain and user that identifies uniquely
3332: # the identity of the user.
3333: # The profile namespace (name of the profile
3334: # database file).
3335: # & separated list of keywords to delete.
3336: # $client - File open on client socket.
3337: # Returns:
3338: # 1 - Continue processing
3339: # 0 - Exit server.
3340: #
3341: #
3342: sub delete_profile_entry {
3343: my ($cmd, $tail, $client) = @_;
3344:
3345: my $userinput = "cmd:$tail";
3346:
3347: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3348: chomp($what);
3349: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3350: &GDBM_WRCREAT(),
3351: "D",$what);
3352: if ($hashref) {
3353: my @keys=split(/\&/,$what);
3354: foreach my $key (@keys) {
3355: delete($hashref->{$key});
3356: }
1.315 albertel 3357: if (&untie_user_hash($hashref)) {
1.231 foxr 3358: &Reply($client, "ok\n", $userinput);
3359: } else {
3360: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3361: "while attempting del\n", $userinput);
3362: }
3363: } else {
3364: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3365: "while attempting del\n", $userinput);
3366: }
3367: return 1;
3368: }
3369: ®ister_handler("del", \&delete_profile_entry, 0, 1, 0);
1.263 albertel 3370:
1.231 foxr 3371: #
3372: # List the set of keys that are defined in a profile database file.
3373: # A successful reply from this will contain an & separated list of
3374: # the keys.
3375: # Parameters:
3376: # $cmd - Command request (keys).
3377: # $tail - Remainder of the request, a colon separated
3378: # list containing domain/user that identifies the
3379: # user being queried, and the database namespace
3380: # (database filename essentially).
3381: # $client - File open on the client.
3382: # Returns:
3383: # 1 - Continue processing.
3384: # 0 - Exit the server.
3385: #
3386: sub get_profile_keys {
3387: my ($cmd, $tail, $client) = @_;
3388:
3389: my $userinput = "$cmd:$tail";
3390:
3391: my ($udom,$uname,$namespace)=split(/:/,$tail);
3392: my $qresult='';
3393: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3394: &GDBM_READER());
3395: if ($hashref) {
3396: foreach my $key (keys %$hashref) {
3397: $qresult.="$key&";
3398: }
1.315 albertel 3399: if (&untie_user_hash($hashref)) {
1.231 foxr 3400: $qresult=~s/\&$//;
1.387 albertel 3401: &Reply($client, \$qresult, $userinput);
1.231 foxr 3402: } else {
3403: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3404: "while attempting keys\n", $userinput);
3405: }
3406: } else {
3407: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3408: "while attempting keys\n", $userinput);
3409: }
3410:
3411: return 1;
3412: }
3413: ®ister_handler("keys", \&get_profile_keys, 0, 1, 0);
3414:
3415: #
3416: # Dump the contents of a user profile database.
3417: # Note that this constitutes a very large covert channel too since
3418: # the dump will return sensitive information that is not encrypted.
3419: # The naive security assumption is that the session negotiation ensures
3420: # our client is trusted and I don't believe that's assured at present.
3421: # Sure want badly to go to ssl or tls. Of course if my peer isn't really
3422: # a LonCAPA node they could have negotiated an encryption key too so >sigh<.
3423: #
3424: # Parameters:
3425: # $cmd - The command request keyword (currentdump).
3426: # $tail - Remainder of the request, consisting of a colon
3427: # separated list that has the domain/username and
3428: # the namespace to dump (database file).
3429: # $client - file open on the remote client.
3430: # Returns:
3431: # 1 - Continue processing.
3432: # 0 - Exit the server.
3433: #
3434: sub dump_profile_database {
3435: my ($cmd, $tail, $client) = @_;
3436:
1.494 droeschl 3437: my $res = LONCAPA::Lond::dump_profile_database($tail);
3438:
3439: if ($res =~ /^error:/) {
3440: Failure($client, \$res, "$cmd:$tail");
3441: } else {
3442: Reply($client, \$res, "$cmd:$tail");
3443: }
3444:
3445: return 1;
3446:
3447: #TODO remove
1.231 foxr 3448: my $userinput = "$cmd:$tail";
3449:
3450: my ($udom,$uname,$namespace) = split(/:/,$tail);
3451: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3452: &GDBM_READER());
3453: if ($hashref) {
3454: # Structure of %data:
3455: # $data{$symb}->{$parameter}=$value;
3456: # $data{$symb}->{'v.'.$parameter}=$version;
3457: # since $parameter will be unescaped, we do not
3458: # have to worry about silly parameter names...
3459:
3460: my $qresult='';
3461: my %data = (); # A hash of anonymous hashes..
3462: while (my ($key,$value) = each(%$hashref)) {
3463: my ($v,$symb,$param) = split(/:/,$key);
3464: next if ($v eq 'version' || $symb eq 'keys');
3465: next if (exists($data{$symb}) &&
3466: exists($data{$symb}->{$param}) &&
3467: $data{$symb}->{'v.'.$param} > $v);
3468: $data{$symb}->{$param}=$value;
3469: $data{$symb}->{'v.'.$param}=$v;
3470: }
1.311 albertel 3471: if (&untie_user_hash($hashref)) {
1.231 foxr 3472: while (my ($symb,$param_hash) = each(%data)) {
3473: while(my ($param,$value) = each (%$param_hash)){
3474: next if ($param =~ /^v\./); # Ignore versions...
3475: #
3476: # Just dump the symb=value pairs separated by &
3477: #
3478: $qresult.=$symb.':'.$param.'='.$value.'&';
3479: }
3480: }
3481: chop($qresult);
1.387 albertel 3482: &Reply($client , \$qresult, $userinput);
1.231 foxr 3483: } else {
3484: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3485: "while attempting currentdump\n", $userinput);
3486: }
3487: } else {
3488: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3489: "while attempting currentdump\n", $userinput);
3490: }
3491:
3492: return 1;
3493: }
3494: ®ister_handler("currentdump", \&dump_profile_database, 0, 1, 0);
3495:
3496: #
3497: # Dump a profile database with an optional regular expression
3498: # to match against the keys. In this dump, no effort is made
3499: # to separate symb from version information. Presumably the
3500: # databases that are dumped by this command are of a different
3501: # structure. Need to look at this and improve the documentation of
3502: # both this and the currentdump handler.
3503: # Parameters:
3504: # $cmd - The command keyword.
3505: # $tail - All of the characters after the $cmd:
3506: # These are expected to be a colon
3507: # separated list containing:
3508: # domain/user - identifying the user.
3509: # namespace - identifying the database.
3510: # regexp - optional regular expression
3511: # that is matched against
3512: # database keywords to do
3513: # selective dumps.
1.488 raeburn 3514: # range - optional range of entries
3515: # e.g., 10-20 would return the
3516: # 10th to 19th items, etc.
1.231 foxr 3517: # $client - Channel open on the client.
3518: # Returns:
3519: # 1 - Continue processing.
3520: # Side effects:
3521: # response is written to $client.
3522: #
3523: sub dump_with_regexp {
3524: my ($cmd, $tail, $client) = @_;
3525:
1.494 droeschl 3526: my $res = LONCAPA::Lond::dump_with_regexp($tail, $clientversion);
1.490 droeschl 3527:
3528: if ($res =~ /^error:/) {
3529: Failure($client, \$res, "$cmd:$tail");
3530: } else {
3531: Reply($client, \$res, "$cmd:$tail");
3532: }
1.231 foxr 3533:
3534: return 1;
3535: }
3536: ®ister_handler("dump", \&dump_with_regexp, 0, 1, 0);
3537:
3538: # Store a set of key=value pairs associated with a versioned name.
3539: #
3540: # Parameters:
3541: # $cmd - Request command keyword.
3542: # $tail - Tail of the request. This is a colon
3543: # separated list containing:
3544: # domain/user - User and authentication domain.
3545: # namespace - Name of the database being modified
3546: # rid - Resource keyword to modify.
3547: # what - new value associated with rid.
1.512 raeburn 3548: # laststore - (optional) version=timestamp
3549: # for most recent transaction for rid
3550: # in namespace, when cstore was called
1.231 foxr 3551: #
3552: # $client - Socket open on the client.
3553: #
3554: #
3555: # Returns:
3556: # 1 (keep on processing).
3557: # Side-Effects:
3558: # Writes to the client
1.512 raeburn 3559: # Successful storage will cause either 'ok', or, if $laststore was included
3560: # in the tail of the request, and the version number for the last transaction
3561: # is larger than the version in $laststore, delay:$numtrans , where $numtrans
3562: # is the number of store evevnts recorded for rid in namespace since
3563: # lonnet::store() was called by the client.
3564: #
1.231 foxr 3565: sub store_handler {
3566: my ($cmd, $tail, $client) = @_;
3567:
3568: my $userinput = "$cmd:$tail";
1.512 raeburn 3569: chomp($tail);
3570: my ($udom,$uname,$namespace,$rid,$what,$laststore) =split(/:/,$tail);
1.231 foxr 3571: if ($namespace ne 'roles') {
3572:
3573: my @pairs=split(/\&/,$what);
3574: my $hashref = &tie_user_hash($udom, $uname, $namespace,
1.268 albertel 3575: &GDBM_WRCREAT(), "S",
1.231 foxr 3576: "$rid:$what");
3577: if ($hashref) {
3578: my $now = time;
1.512 raeburn 3579: my $numtrans;
3580: if ($laststore) {
3581: my ($previousversion,$previoustime) = split(/\=/,$laststore);
3582: my ($lastversion,$lasttime) = (0,0);
3583: $lastversion = $hashref->{"version:$rid"};
3584: if ($lastversion) {
3585: $lasttime = $hashref->{"$lastversion:$rid:timestamp"};
3586: }
3587: if (($previousversion) && ($previousversion !~ /\D/)) {
3588: if (($lastversion > $previousversion) && ($lasttime >= $previoustime)) {
3589: $numtrans = $lastversion - $previousversion;
3590: }
3591: } elsif ($lastversion) {
3592: $numtrans = $lastversion;
3593: }
3594: if ($numtrans) {
3595: $numtrans =~ s/D//g;
3596: }
3597: }
1.231 foxr 3598: $hashref->{"version:$rid"}++;
3599: my $version=$hashref->{"version:$rid"};
3600: my $allkeys='';
3601: foreach my $pair (@pairs) {
3602: my ($key,$value)=split(/=/,$pair);
3603: $allkeys.=$key.':';
3604: $hashref->{"$version:$rid:$key"}=$value;
3605: }
3606: $hashref->{"$version:$rid:timestamp"}=$now;
3607: $allkeys.='timestamp';
3608: $hashref->{"$version:keys:$rid"}=$allkeys;
1.311 albertel 3609: if (&untie_user_hash($hashref)) {
1.512 raeburn 3610: my $msg = 'ok';
3611: if ($numtrans) {
3612: $msg = 'delay:'.$numtrans;
3613: }
3614: &Reply($client, "$msg\n", $userinput);
1.231 foxr 3615: } else {
3616: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3617: "while attempting store\n", $userinput);
3618: }
3619: } else {
3620: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3621: "while attempting store\n", $userinput);
3622: }
3623: } else {
3624: &Failure($client, "refused\n", $userinput);
3625: }
3626:
3627: return 1;
3628: }
3629: ®ister_handler("store", \&store_handler, 0, 1, 0);
1.263 albertel 3630:
1.323 albertel 3631: # Modify a set of key=value pairs associated with a versioned name.
3632: #
3633: # Parameters:
3634: # $cmd - Request command keyword.
3635: # $tail - Tail of the request. This is a colon
3636: # separated list containing:
3637: # domain/user - User and authentication domain.
3638: # namespace - Name of the database being modified
3639: # rid - Resource keyword to modify.
3640: # v - Version item to modify
3641: # what - new value associated with rid.
3642: #
3643: # $client - Socket open on the client.
3644: #
3645: #
3646: # Returns:
3647: # 1 (keep on processing).
3648: # Side-Effects:
3649: # Writes to the client
3650: sub putstore_handler {
3651: my ($cmd, $tail, $client) = @_;
3652:
3653: my $userinput = "$cmd:$tail";
3654:
3655: my ($udom,$uname,$namespace,$rid,$v,$what) =split(/:/,$tail);
3656: if ($namespace ne 'roles') {
3657:
3658: chomp($what);
3659: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3660: &GDBM_WRCREAT(), "M",
3661: "$rid:$v:$what");
3662: if ($hashref) {
3663: my $now = time;
3664: my %data = &hash_extract($what);
3665: my @allkeys;
3666: while (my($key,$value) = each(%data)) {
3667: push(@allkeys,$key);
3668: $hashref->{"$v:$rid:$key"} = $value;
3669: }
3670: my $allkeys = join(':',@allkeys);
3671: $hashref->{"$v:keys:$rid"}=$allkeys;
3672:
3673: if (&untie_user_hash($hashref)) {
3674: &Reply($client, "ok\n", $userinput);
3675: } else {
3676: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3677: "while attempting store\n", $userinput);
3678: }
3679: } else {
3680: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3681: "while attempting store\n", $userinput);
3682: }
3683: } else {
3684: &Failure($client, "refused\n", $userinput);
3685: }
3686:
3687: return 1;
3688: }
3689: ®ister_handler("putstore", \&putstore_handler, 0, 1, 0);
3690:
3691: sub hash_extract {
3692: my ($str)=@_;
3693: my %hash;
3694: foreach my $pair (split(/\&/,$str)) {
3695: my ($key,$value)=split(/=/,$pair);
3696: $hash{$key}=$value;
3697: }
3698: return (%hash);
3699: }
3700: sub hash_to_str {
3701: my ($hash_ref)=@_;
3702: my $str;
3703: foreach my $key (keys(%$hash_ref)) {
3704: $str.=$key.'='.$hash_ref->{$key}.'&';
3705: }
3706: $str=~s/\&$//;
3707: return $str;
3708: }
3709:
1.231 foxr 3710: #
3711: # Dump out all versions of a resource that has key=value pairs associated
3712: # with it for each version. These resources are built up via the store
3713: # command.
3714: #
3715: # Parameters:
3716: # $cmd - Command keyword.
3717: # $tail - Remainder of the request which consists of:
3718: # domain/user - User and auth. domain.
3719: # namespace - name of resource database.
3720: # rid - Resource id.
3721: # $client - socket open on the client.
3722: #
3723: # Returns:
3724: # 1 indicating the caller should not yet exit.
3725: # Side-effects:
3726: # Writes a reply to the client.
3727: # The reply is a string of the following shape:
3728: # version=current&version:keys=k1:k2...&1:k1=v1&1:k2=v2...
3729: # Where the 1 above represents version 1.
3730: # this continues for all pairs of keys in all versions.
3731: #
3732: #
3733: #
3734: #
3735: sub restore_handler {
3736: my ($cmd, $tail, $client) = @_;
3737:
3738: my $userinput = "$cmd:$tail"; # Only used for logging purposes.
1.351 banghart 3739: my ($udom,$uname,$namespace,$rid) = split(/:/,$tail);
1.352 albertel 3740: $namespace=~s/\//\_/g;
1.350 albertel 3741: $namespace = &LONCAPA::clean_username($namespace);
1.349 albertel 3742:
1.231 foxr 3743: chomp($rid);
3744: my $qresult='';
1.309 albertel 3745: my $hashref = &tie_user_hash($udom, $uname, $namespace, &GDBM_READER());
3746: if ($hashref) {
3747: my $version=$hashref->{"version:$rid"};
1.231 foxr 3748: $qresult.="version=$version&";
3749: my $scope;
3750: for ($scope=1;$scope<=$version;$scope++) {
1.309 albertel 3751: my $vkeys=$hashref->{"$scope:keys:$rid"};
1.231 foxr 3752: my @keys=split(/:/,$vkeys);
3753: my $key;
3754: $qresult.="$scope:keys=$vkeys&";
3755: foreach $key (@keys) {
1.309 albertel 3756: $qresult.="$scope:$key=".$hashref->{"$scope:$rid:$key"}."&";
1.231 foxr 3757: }
3758: }
1.311 albertel 3759: if (&untie_user_hash($hashref)) {
1.231 foxr 3760: $qresult=~s/\&$//;
1.387 albertel 3761: &Reply( $client, \$qresult, $userinput);
1.231 foxr 3762: } else {
3763: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3764: "while attempting restore\n", $userinput);
3765: }
3766: } else {
3767: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3768: "while attempting restore\n", $userinput);
3769: }
3770:
3771: return 1;
3772:
3773:
3774: }
3775: ®ister_handler("restore", \&restore_handler, 0,1,0);
1.234 foxr 3776:
3777: #
1.324 raeburn 3778: # Add a chat message to a synchronous discussion board.
1.234 foxr 3779: #
3780: # Parameters:
3781: # $cmd - Request keyword.
3782: # $tail - Tail of the command. A colon separated list
3783: # containing:
3784: # cdom - Domain on which the chat board lives
1.324 raeburn 3785: # cnum - Course containing the chat board.
3786: # newpost - Body of the posting.
3787: # group - Optional group, if chat board is only
3788: # accessible in a group within the course
1.234 foxr 3789: # $client - Socket open on the client.
3790: # Returns:
3791: # 1 - Indicating caller should keep on processing.
3792: #
3793: # Side-effects:
3794: # writes a reply to the client.
3795: #
3796: #
3797: sub send_chat_handler {
3798: my ($cmd, $tail, $client) = @_;
3799:
3800:
3801: my $userinput = "$cmd:$tail";
3802:
1.324 raeburn 3803: my ($cdom,$cnum,$newpost,$group)=split(/\:/,$tail);
3804: &chat_add($cdom,$cnum,$newpost,$group);
1.234 foxr 3805: &Reply($client, "ok\n", $userinput);
3806:
3807: return 1;
3808: }
3809: ®ister_handler("chatsend", \&send_chat_handler, 0, 1, 0);
1.263 albertel 3810:
1.234 foxr 3811: #
1.324 raeburn 3812: # Retrieve the set of chat messages from a discussion board.
1.234 foxr 3813: #
3814: # Parameters:
3815: # $cmd - Command keyword that initiated the request.
3816: # $tail - Remainder of the request after the command
3817: # keyword. In this case a colon separated list of
3818: # chat domain - Which discussion board.
3819: # chat id - Discussion thread(?)
3820: # domain/user - Authentication domain and username
3821: # of the requesting person.
1.324 raeburn 3822: # group - Optional course group containing
3823: # the board.
1.234 foxr 3824: # $client - Socket open on the client program.
3825: # Returns:
3826: # 1 - continue processing
3827: # Side effects:
3828: # Response is written to the client.
3829: #
3830: sub retrieve_chat_handler {
3831: my ($cmd, $tail, $client) = @_;
3832:
3833:
3834: my $userinput = "$cmd:$tail";
3835:
1.324 raeburn 3836: my ($cdom,$cnum,$udom,$uname,$group)=split(/\:/,$tail);
1.234 foxr 3837: my $reply='';
1.324 raeburn 3838: foreach (&get_chat($cdom,$cnum,$udom,$uname,$group)) {
1.234 foxr 3839: $reply.=&escape($_).':';
3840: }
3841: $reply=~s/\:$//;
1.387 albertel 3842: &Reply($client, \$reply, $userinput);
1.234 foxr 3843:
3844:
3845: return 1;
3846: }
3847: ®ister_handler("chatretr", \&retrieve_chat_handler, 0, 1, 0);
3848:
3849: #
3850: # Initiate a query of an sql database. SQL query repsonses get put in
3851: # a file for later retrieval. This prevents sql query results from
3852: # bottlenecking the system. Note that with loncnew, perhaps this is
3853: # less of an issue since multiple outstanding requests can be concurrently
3854: # serviced.
3855: #
3856: # Parameters:
3857: # $cmd - COmmand keyword that initiated the request.
3858: # $tail - Remainder of the command after the keyword.
3859: # For this function, this consists of a query and
3860: # 3 arguments that are self-documentingly labelled
3861: # in the original arg1, arg2, arg3.
3862: # $client - Socket open on the client.
3863: # Return:
3864: # 1 - Indicating processing should continue.
3865: # Side-effects:
3866: # a reply is written to $client.
3867: #
3868: sub send_query_handler {
3869: my ($cmd, $tail, $client) = @_;
3870:
3871:
3872: my $userinput = "$cmd:$tail";
3873:
3874: my ($query,$arg1,$arg2,$arg3)=split(/\:/,$tail);
3875: $query=~s/\n*$//g;
3876: &Reply($client, "". &sql_reply("$clientname\&$query".
3877: "\&$arg1"."\&$arg2"."\&$arg3")."\n",
3878: $userinput);
3879:
3880: return 1;
3881: }
3882: ®ister_handler("querysend", \&send_query_handler, 0, 1, 0);
3883:
3884: #
3885: # Add a reply to an sql query. SQL queries are done asyncrhonously.
3886: # The query is submitted via a "querysend" transaction.
3887: # There it is passed on to the lonsql daemon, queued and issued to
3888: # mysql.
3889: # This transaction is invoked when the sql transaction is complete
3890: # it stores the query results in flie and indicates query completion.
3891: # presumably local software then fetches this response... I'm guessing
3892: # the sequence is: lonc does a querysend, we ask lonsql to do it.
3893: # lonsql on completion of the query interacts with the lond of our
3894: # client to do a query reply storing two files:
3895: # - id - The results of the query.
3896: # - id.end - Indicating the transaction completed.
3897: # NOTE: id is a unique id assigned to the query and querysend time.
3898: # Parameters:
3899: # $cmd - Command keyword that initiated this request.
3900: # $tail - Remainder of the tail. In this case that's a colon
3901: # separated list containing the query Id and the
3902: # results of the query.
3903: # $client - Socket open on the client.
3904: # Return:
3905: # 1 - Indicating that we should continue processing.
3906: # Side effects:
3907: # ok written to the client.
3908: #
3909: sub reply_query_handler {
3910: my ($cmd, $tail, $client) = @_;
3911:
3912:
3913: my $userinput = "$cmd:$tail";
3914:
1.339 albertel 3915: my ($id,$reply)=split(/:/,$tail);
1.234 foxr 3916: my $store;
3917: my $execdir=$perlvar{'lonDaemons'};
3918: if ($store=IO::File->new(">$execdir/tmp/$id")) {
3919: $reply=~s/\&/\n/g;
3920: print $store $reply;
3921: close $store;
3922: my $store2=IO::File->new(">$execdir/tmp/$id.end");
3923: print $store2 "done\n";
3924: close $store2;
3925: &Reply($client, "ok\n", $userinput);
3926: } else {
3927: &Failure($client, "error: ".($!+0)
3928: ." IO::File->new Failed ".
3929: "while attempting queryreply\n", $userinput);
3930: }
3931:
3932:
3933: return 1;
3934: }
3935: ®ister_handler("queryreply", \&reply_query_handler, 0, 1, 0);
3936:
3937: #
3938: # Process the courseidput request. Not quite sure what this means
3939: # at the system level sense. It appears a gdbm file in the
3940: # /home/httpd/lonUsers/$domain/nohist_courseids is tied and
3941: # a set of entries made in that database.
3942: #
3943: # Parameters:
3944: # $cmd - The command keyword that initiated this request.
3945: # $tail - Tail of the command. In this case consists of a colon
3946: # separated list contaning the domain to apply this to and
3947: # an ampersand separated list of keyword=value pairs.
1.272 raeburn 3948: # Each value is a colon separated list that includes:
3949: # description, institutional code and course owner.
3950: # For backward compatibility with versions included
3951: # in LON-CAPA 1.1.X (and earlier) and 1.2.X, institutional
3952: # code and/or course owner are preserved from the existing
3953: # record when writing a new record in response to 1.1 or
3954: # 1.2 implementations of lonnet::flushcourselogs().
3955: #
1.234 foxr 3956: # $client - Socket open on the client.
3957: # Returns:
3958: # 1 - indicating that processing should continue
3959: #
3960: # Side effects:
3961: # reply is written to the client.
3962: #
3963: sub put_course_id_handler {
3964: my ($cmd, $tail, $client) = @_;
3965:
3966:
3967: my $userinput = "$cmd:$tail";
3968:
1.266 raeburn 3969: my ($udom, $what) = split(/:/, $tail,2);
1.234 foxr 3970: chomp($what);
3971: my $now=time;
3972: my @pairs=split(/\&/,$what);
3973:
3974: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
3975: if ($hashref) {
3976: foreach my $pair (@pairs) {
1.271 raeburn 3977: my ($key,$courseinfo) = split(/=/,$pair,2);
3978: $courseinfo =~ s/=/:/g;
1.384 raeburn 3979: if (defined($hashref->{$key})) {
3980: my $value = &Apache::lonnet::thaw_unescape($hashref->{$key});
3981: if (ref($value) eq 'HASH') {
3982: my @items = ('description','inst_code','owner','type');
3983: my @new_items = split(/:/,$courseinfo,-1);
3984: my %storehash;
3985: for (my $i=0; $i<@new_items; $i++) {
1.391 raeburn 3986: $storehash{$items[$i]} = &unescape($new_items[$i]);
1.384 raeburn 3987: }
3988: $hashref->{$key} =
3989: &Apache::lonnet::freeze_escape(\%storehash);
3990: my $unesc_key = &unescape($key);
3991: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
3992: next;
1.383 raeburn 3993: }
1.384 raeburn 3994: }
3995: my @current_items = split(/:/,$hashref->{$key},-1);
3996: shift(@current_items); # remove description
3997: pop(@current_items); # remove last access
3998: my $numcurrent = scalar(@current_items);
3999: if ($numcurrent > 3) {
4000: $numcurrent = 3;
4001: }
4002: my @new_items = split(/:/,$courseinfo,-1);
4003: my $numnew = scalar(@new_items);
4004: if ($numcurrent > 0) {
4005: if ($numnew <= $numcurrent) { # flushcourselogs() from pre 2.2
4006: for (my $j=$numcurrent-$numnew; $j>=0; $j--) {
4007: $courseinfo .= ':'.$current_items[$numcurrent-$j-1];
1.333 raeburn 4008: }
1.272 raeburn 4009: }
4010: }
1.384 raeburn 4011: $hashref->{$key}=$courseinfo.':'.$now;
1.234 foxr 4012: }
1.311 albertel 4013: if (&untie_domain_hash($hashref)) {
1.253 foxr 4014: &Reply( $client, "ok\n", $userinput);
1.234 foxr 4015: } else {
1.253 foxr 4016: &Failure($client, "error: ".($!+0)
1.234 foxr 4017: ." untie(GDBM) Failed ".
4018: "while attempting courseidput\n", $userinput);
4019: }
4020: } else {
1.253 foxr 4021: &Failure($client, "error: ".($!+0)
1.234 foxr 4022: ." tie(GDBM) Failed ".
4023: "while attempting courseidput\n", $userinput);
4024: }
4025:
4026: return 1;
4027: }
4028: ®ister_handler("courseidput", \&put_course_id_handler, 0, 1, 0);
4029:
1.383 raeburn 4030: sub put_course_id_hash_handler {
4031: my ($cmd, $tail, $client) = @_;
4032: my $userinput = "$cmd:$tail";
1.384 raeburn 4033: my ($udom,$mode,$what) = split(/:/, $tail,3);
1.383 raeburn 4034: chomp($what);
4035: my $now=time;
4036: my @pairs=split(/\&/,$what);
1.384 raeburn 4037: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
1.383 raeburn 4038: if ($hashref) {
4039: foreach my $pair (@pairs) {
4040: my ($key,$value)=split(/=/,$pair);
1.384 raeburn 4041: my $unesc_key = &unescape($key);
4042: if ($mode ne 'timeonly') {
4043: if (!defined($hashref->{&escape('lasttime:'.$unesc_key)})) {
4044: my $curritems = &Apache::lonnet::thaw_unescape($key);
4045: if (ref($curritems) ne 'HASH') {
4046: my @current_items = split(/:/,$hashref->{$key},-1);
4047: my $lasttime = pop(@current_items);
4048: $hashref->{&escape('lasttime:'.$unesc_key)} = $lasttime;
4049: } else {
4050: $hashref->{&escape('lasttime:'.$unesc_key)} = '';
4051: }
4052: }
4053: $hashref->{$key} = $value;
4054: }
4055: if ($mode ne 'notime') {
4056: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
4057: }
1.383 raeburn 4058: }
4059: if (&untie_domain_hash($hashref)) {
4060: &Reply($client, "ok\n", $userinput);
4061: } else {
4062: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4063: "while attempting courseidputhash\n", $userinput);
4064: }
4065: } else {
4066: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4067: "while attempting courseidputhash\n", $userinput);
4068: }
4069: return 1;
4070: }
4071: ®ister_handler("courseidputhash", \&put_course_id_hash_handler, 0, 1, 0);
4072:
1.234 foxr 4073: # Retrieves the value of a course id resource keyword pattern
4074: # defined since a starting date. Both the starting date and the
4075: # keyword pattern are optional. If the starting date is not supplied it
4076: # is treated as the beginning of time. If the pattern is not found,
4077: # it is treatred as "." matching everything.
4078: #
4079: # Parameters:
4080: # $cmd - Command keyword that resulted in us being dispatched.
4081: # $tail - The remainder of the command that, in this case, consists
4082: # of a colon separated list of:
4083: # domain - The domain in which the course database is
4084: # defined.
4085: # since - Optional parameter describing the minimum
4086: # time of definition(?) of the resources that
4087: # will match the dump.
4088: # description - regular expression that is used to filter
4089: # the dump. Only keywords matching this regexp
4090: # will be used.
1.272 raeburn 4091: # institutional code - optional supplied code to filter
4092: # the dump. Only courses with an institutional code
4093: # that match the supplied code will be returned.
1.336 raeburn 4094: # owner - optional supplied username and domain of owner to
4095: # filter the dump. Only courses for which the course
4096: # owner matches the supplied username and/or domain
4097: # will be returned. Pre-2.2.0 legacy entries from
4098: # nohist_courseiddump will only contain usernames.
1.384 raeburn 4099: # type - optional parameter for selection
1.418 raeburn 4100: # regexp_ok - if 1 or -1 allow the supplied institutional code
4101: # filter to behave as a regular expression:
4102: # 1 will not exclude the course if the instcode matches the RE
4103: # -1 will exclude the course if the instcode matches the RE
1.384 raeburn 4104: # rtn_as_hash - whether to return the information available for
4105: # each matched item as a frozen hash of all
4106: # key, value pairs in the item's hash, or as a
4107: # colon-separated list of (in order) description,
4108: # institutional code, and course owner.
1.404 raeburn 4109: # selfenrollonly - filter by courses allowing self-enrollment
4110: # now or in the future (selfenrollonly = 1).
4111: # catfilter - filter by course category, assigned to a course
4112: # using manually defined categories (i.e., not
1.407 raeburn 4113: # self-cataloging based on on institutional code).
1.404 raeburn 4114: # showhidden - include course in results even if course
1.407 raeburn 4115: # was set to be excluded from course catalog (DC only).
1.404 raeburn 4116: # caller - if set to 'coursecatalog', courses set to be hidden
4117: # from course catalog will be excluded from results (unless
4118: # overridden by "showhidden".
1.427 raeburn 4119: # cloner - escaped username:domain of course cloner (if picking course to
1.419 raeburn 4120: # clone).
4121: # cc_clone_list - escaped comma separated list of courses for which
4122: # course cloner has active CC role (and so can clone
4123: # automatically).
1.427 raeburn 4124: # cloneonly - filter by courses for which cloner has rights to clone.
4125: # createdbefore - include courses for which creation date preceeded this date.
4126: # createdafter - include courses for which creation date followed this date.
4127: # creationcontext - include courses created in specified context
1.404 raeburn 4128: #
1.445 raeburn 4129: # domcloner - flag to indicate if user can create CCs in course's domain.
1.505 raeburn 4130: # If so, ability to clone course is automatic.
4131: # hasuniquecode - filter by courses for which a six character unique code has
4132: # been set.
1.445 raeburn 4133: #
1.234 foxr 4134: # $client - The socket open on the client.
4135: # Returns:
4136: # 1 - Continue processing.
4137: # Side Effects:
4138: # a reply is written to $client.
4139: sub dump_course_id_handler {
4140: my ($cmd, $tail, $client) = @_;
1.494 droeschl 4141:
4142: my $res = LONCAPA::Lond::dump_course_id_handler($tail);
4143: if ($res =~ /^error:/) {
4144: Failure($client, \$res, "$cmd:$tail");
4145: } else {
4146: Reply($client, \$res, "$cmd:$tail");
4147: }
4148:
4149: return 1;
4150:
4151: #TODO remove
1.234 foxr 4152: my $userinput = "$cmd:$tail";
4153:
1.333 raeburn 4154: my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter,
1.404 raeburn 4155: $typefilter,$regexp_ok,$rtn_as_hash,$selfenrollonly,$catfilter,$showhidden,
1.427 raeburn 4156: $caller,$cloner,$cc_clone_list,$cloneonly,$createdbefore,$createdafter,
1.505 raeburn 4157: $creationcontext,$domcloner,$hasuniquecode) =split(/:/,$tail);
1.397 raeburn 4158: my $now = time;
1.419 raeburn 4159: my ($cloneruname,$clonerudom,%cc_clone);
1.234 foxr 4160: if (defined($description)) {
4161: $description=&unescape($description);
4162: } else {
4163: $description='.';
4164: }
1.266 raeburn 4165: if (defined($instcodefilter)) {
4166: $instcodefilter=&unescape($instcodefilter);
4167: } else {
4168: $instcodefilter='.';
4169: }
1.336 raeburn 4170: my ($ownerunamefilter,$ownerdomfilter);
1.266 raeburn 4171: if (defined($ownerfilter)) {
4172: $ownerfilter=&unescape($ownerfilter);
1.336 raeburn 4173: if ($ownerfilter ne '.' && defined($ownerfilter)) {
4174: if ($ownerfilter =~ /^([^:]*):([^:]*)$/) {
4175: $ownerunamefilter = $1;
4176: $ownerdomfilter = $2;
4177: } else {
4178: $ownerunamefilter = $ownerfilter;
4179: $ownerdomfilter = '';
4180: }
4181: }
1.266 raeburn 4182: } else {
4183: $ownerfilter='.';
4184: }
1.336 raeburn 4185:
1.282 raeburn 4186: if (defined($coursefilter)) {
4187: $coursefilter=&unescape($coursefilter);
4188: } else {
4189: $coursefilter='.';
4190: }
1.333 raeburn 4191: if (defined($typefilter)) {
4192: $typefilter=&unescape($typefilter);
4193: } else {
4194: $typefilter='.';
4195: }
1.344 raeburn 4196: if (defined($regexp_ok)) {
4197: $regexp_ok=&unescape($regexp_ok);
4198: }
1.401 raeburn 4199: if (defined($catfilter)) {
4200: $catfilter=&unescape($catfilter);
4201: }
1.419 raeburn 4202: if (defined($cloner)) {
4203: $cloner = &unescape($cloner);
4204: ($cloneruname,$clonerudom) = ($cloner =~ /^($LONCAPA::match_username):($LONCAPA::match_domain)$/);
4205: }
4206: if (defined($cc_clone_list)) {
4207: $cc_clone_list = &unescape($cc_clone_list);
4208: my @cc_cloners = split('&',$cc_clone_list);
4209: foreach my $cid (@cc_cloners) {
4210: my ($clonedom,$clonenum) = split(':',$cid);
4211: next if ($clonedom ne $udom);
4212: $cc_clone{$clonedom.'_'.$clonenum} = 1;
4213: }
4214: }
1.431 raeburn 4215: if ($createdbefore ne '') {
1.427 raeburn 4216: $createdbefore = &unescape($createdbefore);
4217: } else {
4218: $createdbefore = 0;
4219: }
1.431 raeburn 4220: if ($createdafter ne '') {
1.427 raeburn 4221: $createdafter = &unescape($createdafter);
4222: } else {
4223: $createdafter = 0;
4224: }
1.431 raeburn 4225: if ($creationcontext ne '') {
1.427 raeburn 4226: $creationcontext = &unescape($creationcontext);
4227: } else {
4228: $creationcontext = '.';
4229: }
1.505 raeburn 4230: unless ($hasuniquecode) {
4231: $hasuniquecode = '.';
4232: }
1.384 raeburn 4233: my $unpack = 1;
1.485 raeburn 4234: if ($description eq '.' && $instcodefilter eq '.' && $ownerfilter eq '.' &&
1.384 raeburn 4235: $typefilter eq '.') {
4236: $unpack = 0;
4237: }
4238: if (!defined($since)) { $since=0; }
1.234 foxr 4239: my $qresult='';
4240: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
4241: if ($hashref) {
1.384 raeburn 4242: while (my ($key,$value) = each(%$hashref)) {
1.397 raeburn 4243: my ($unesc_key,$lasttime_key,$lasttime,$is_hash,%val,
1.427 raeburn 4244: %unesc_val,$selfenroll_end,$selfenroll_types,$created,
4245: $context);
1.384 raeburn 4246: $unesc_key = &unescape($key);
4247: if ($unesc_key =~ /^lasttime:/) {
4248: next;
4249: } else {
4250: $lasttime_key = &escape('lasttime:'.$unesc_key);
4251: }
4252: if ($hashref->{$lasttime_key} ne '') {
4253: $lasttime = $hashref->{$lasttime_key};
4254: next if ($lasttime<$since);
4255: }
1.419 raeburn 4256: my ($canclone,$valchange);
1.384 raeburn 4257: my $items = &Apache::lonnet::thaw_unescape($value);
4258: if (ref($items) eq 'HASH') {
1.429 raeburn 4259: if ($hashref->{$lasttime_key} eq '') {
1.430 raeburn 4260: next if ($since > 1);
1.429 raeburn 4261: }
1.384 raeburn 4262: $is_hash = 1;
1.445 raeburn 4263: if ($domcloner) {
4264: $canclone = 1;
4265: } elsif (defined($clonerudom)) {
1.419 raeburn 4266: if ($items->{'cloners'}) {
4267: my @cloneable = split(',',$items->{'cloners'});
4268: if (@cloneable) {
4269: if (grep(/^\*$/,@cloneable)) {
4270: $canclone = 1;
4271: } elsif (grep(/^\*:\Q$clonerudom\E$/,@cloneable)) {
4272: $canclone = 1;
4273: } elsif (grep(/^\Q$cloneruname\E:\Q$clonerudom\E$/,@cloneable)) {
4274: $canclone = 1;
4275: }
4276: }
4277: unless ($canclone) {
4278: if ($cloneruname ne '' && $clonerudom ne '') {
4279: if ($cc_clone{$unesc_key}) {
4280: $canclone = 1;
4281: $items->{'cloners'} .= ','.$cloneruname.':'.
4282: $clonerudom;
4283: $valchange = 1;
4284: }
4285: }
4286: }
4287: } elsif (defined($cloneruname)) {
4288: if ($cc_clone{$unesc_key}) {
4289: $canclone = 1;
4290: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
4291: $valchange = 1;
4292: }
1.437 raeburn 4293: unless ($canclone) {
4294: if ($items->{'owner'} =~ /:/) {
4295: if ($items->{'owner'} eq $cloner) {
4296: $canclone = 1;
4297: }
1.444 raeburn 4298: } elsif ($cloner eq $items->{'owner'}.':'.$udom) {
1.437 raeburn 4299: $canclone = 1;
4300: }
4301: if ($canclone) {
4302: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
4303: $valchange = 1;
4304: }
4305: }
1.419 raeburn 4306: }
4307: }
1.384 raeburn 4308: if ($unpack || !$rtn_as_hash) {
4309: $unesc_val{'descr'} = $items->{'description'};
4310: $unesc_val{'inst_code'} = $items->{'inst_code'};
4311: $unesc_val{'owner'} = $items->{'owner'};
4312: $unesc_val{'type'} = $items->{'type'};
1.419 raeburn 4313: $unesc_val{'cloners'} = $items->{'cloners'};
1.427 raeburn 4314: $unesc_val{'created'} = $items->{'created'};
4315: $unesc_val{'context'} = $items->{'context'};
1.404 raeburn 4316: }
4317: $selfenroll_types = $items->{'selfenroll_types'};
4318: $selfenroll_end = $items->{'selfenroll_end_date'};
1.427 raeburn 4319: $created = $items->{'created'};
4320: $context = $items->{'context'};
1.505 raeburn 4321: if ($hasuniquecode ne '.') {
4322: next unless ($items->{'uniquecode'});
4323: }
1.404 raeburn 4324: if ($selfenrollonly) {
4325: next if (!$selfenroll_types);
4326: if (($selfenroll_end > 0) && ($selfenroll_end <= $now)) {
4327: next;
1.397 raeburn 4328: }
1.404 raeburn 4329: }
1.427 raeburn 4330: if ($creationcontext ne '.') {
4331: next if (($context ne '') && ($context ne $creationcontext));
4332: }
4333: if ($createdbefore > 0) {
4334: next if (($created eq '') || ($created > $createdbefore));
4335: }
4336: if ($createdafter > 0) {
4337: next if (($created eq '') || ($created <= $createdafter));
4338: }
1.404 raeburn 4339: if ($catfilter ne '') {
1.406 raeburn 4340: next if ($items->{'categories'} eq '');
4341: my @categories = split('&',$items->{'categories'});
1.407 raeburn 4342: next if (@categories == 0);
4343: my @subcats = split('&',$catfilter);
4344: my $matchcat = 0;
4345: foreach my $cat (@categories) {
4346: if (grep(/^\Q$cat\E$/,@subcats)) {
4347: $matchcat = 1;
4348: last;
4349: }
4350: }
4351: next if (!$matchcat);
1.404 raeburn 4352: }
4353: if ($caller eq 'coursecatalog') {
1.405 raeburn 4354: if ($items->{'hidefromcat'} eq 'yes') {
4355: next if !$showhidden;
1.401 raeburn 4356: }
1.384 raeburn 4357: }
1.383 raeburn 4358: } else {
1.401 raeburn 4359: next if ($catfilter ne '');
1.419 raeburn 4360: next if ($selfenrollonly);
1.427 raeburn 4361: next if ($createdbefore || $createdafter);
4362: next if ($creationcontext ne '.');
1.419 raeburn 4363: if ((defined($clonerudom)) && (defined($cloneruname))) {
4364: if ($cc_clone{$unesc_key}) {
4365: $canclone = 1;
4366: $val{'cloners'} = &escape($cloneruname.':'.$clonerudom);
4367: }
4368: }
1.384 raeburn 4369: $is_hash = 0;
1.388 raeburn 4370: my @courseitems = split(/:/,$value);
1.403 raeburn 4371: $lasttime = pop(@courseitems);
1.402 raeburn 4372: if ($hashref->{$lasttime_key} eq '') {
4373: next if ($lasttime<$since);
4374: }
1.384 raeburn 4375: ($val{'descr'},$val{'inst_code'},$val{'owner'},$val{'type'}) = @courseitems;
1.383 raeburn 4376: }
1.419 raeburn 4377: if ($cloneonly) {
4378: next unless ($canclone);
4379: }
1.266 raeburn 4380: my $match = 1;
1.384 raeburn 4381: if ($description ne '.') {
4382: if (!$is_hash) {
4383: $unesc_val{'descr'} = &unescape($val{'descr'});
4384: }
4385: if (eval{$unesc_val{'descr'} !~ /\Q$description\E/i}) {
1.266 raeburn 4386: $match = 0;
1.384 raeburn 4387: }
1.266 raeburn 4388: }
1.384 raeburn 4389: if ($instcodefilter ne '.') {
4390: if (!$is_hash) {
4391: $unesc_val{'inst_code'} = &unescape($val{'inst_code'});
4392: }
1.418 raeburn 4393: if ($regexp_ok == 1) {
1.384 raeburn 4394: if (eval{$unesc_val{'inst_code'} !~ /$instcodefilter/}) {
1.344 raeburn 4395: $match = 0;
4396: }
1.418 raeburn 4397: } elsif ($regexp_ok == -1) {
4398: if (eval{$unesc_val{'inst_code'} =~ /$instcodefilter/}) {
4399: $match = 0;
4400: }
1.344 raeburn 4401: } else {
1.384 raeburn 4402: if (eval{$unesc_val{'inst_code'} !~ /\Q$instcodefilter\E/i}) {
1.344 raeburn 4403: $match = 0;
4404: }
1.266 raeburn 4405: }
1.234 foxr 4406: }
1.384 raeburn 4407: if ($ownerfilter ne '.') {
4408: if (!$is_hash) {
4409: $unesc_val{'owner'} = &unescape($val{'owner'});
4410: }
1.336 raeburn 4411: if (($ownerunamefilter ne '') && ($ownerdomfilter ne '')) {
1.384 raeburn 4412: if ($unesc_val{'owner'} =~ /:/) {
4413: if (eval{$unesc_val{'owner'} !~
4414: /\Q$ownerunamefilter\E:\Q$ownerdomfilter\E$/i}) {
1.336 raeburn 4415: $match = 0;
4416: }
4417: } else {
1.384 raeburn 4418: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4419: $match = 0;
4420: }
4421: }
4422: } elsif ($ownerunamefilter ne '') {
1.384 raeburn 4423: if ($unesc_val{'owner'} =~ /:/) {
4424: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E:[^:]+$/i}) {
1.336 raeburn 4425: $match = 0;
4426: }
4427: } else {
1.384 raeburn 4428: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4429: $match = 0;
4430: }
4431: }
4432: } elsif ($ownerdomfilter ne '') {
1.384 raeburn 4433: if ($unesc_val{'owner'} =~ /:/) {
4434: if (eval{$unesc_val{'owner'} !~ /^[^:]+:\Q$ownerdomfilter\E/}) {
1.336 raeburn 4435: $match = 0;
4436: }
4437: } else {
4438: if ($ownerdomfilter ne $udom) {
4439: $match = 0;
4440: }
4441: }
1.266 raeburn 4442: }
4443: }
1.384 raeburn 4444: if ($coursefilter ne '.') {
4445: if (eval{$unesc_key !~ /^$udom(_)\Q$coursefilter\E$/}) {
1.282 raeburn 4446: $match = 0;
4447: }
4448: }
1.384 raeburn 4449: if ($typefilter ne '.') {
4450: if (!$is_hash) {
4451: $unesc_val{'type'} = &unescape($val{'type'});
4452: }
4453: if ($unesc_val{'type'} eq '') {
1.333 raeburn 4454: if ($typefilter ne 'Course') {
4455: $match = 0;
4456: }
1.383 raeburn 4457: } else {
1.384 raeburn 4458: if (eval{$unesc_val{'type'} !~ /^\Q$typefilter\E$/}) {
1.333 raeburn 4459: $match = 0;
4460: }
4461: }
4462: }
1.266 raeburn 4463: if ($match == 1) {
1.384 raeburn 4464: if ($rtn_as_hash) {
4465: if ($is_hash) {
1.419 raeburn 4466: if ($valchange) {
4467: my $newvalue = &Apache::lonnet::freeze_escape($items);
4468: $qresult.=$key.'='.$newvalue.'&';
4469: } else {
4470: $qresult.=$key.'='.$value.'&';
4471: }
1.384 raeburn 4472: } else {
1.388 raeburn 4473: my %rtnhash = ( 'description' => &unescape($val{'descr'}),
4474: 'inst_code' => &unescape($val{'inst_code'}),
4475: 'owner' => &unescape($val{'owner'}),
4476: 'type' => &unescape($val{'type'}),
1.419 raeburn 4477: 'cloners' => &unescape($val{'cloners'}),
1.384 raeburn 4478: );
4479: my $items = &Apache::lonnet::freeze_escape(\%rtnhash);
4480: $qresult.=$key.'='.$items.'&';
4481: }
1.383 raeburn 4482: } else {
1.384 raeburn 4483: if ($is_hash) {
4484: $qresult .= $key.'='.&escape($unesc_val{'descr'}).':'.
4485: &escape($unesc_val{'inst_code'}).':'.
4486: &escape($unesc_val{'owner'}).'&';
4487: } else {
4488: $qresult .= $key.'='.$val{'descr'}.':'.$val{'inst_code'}.
4489: ':'.$val{'owner'}.'&';
4490: }
1.383 raeburn 4491: }
1.266 raeburn 4492: }
1.234 foxr 4493: }
1.311 albertel 4494: if (&untie_domain_hash($hashref)) {
1.234 foxr 4495: chop($qresult);
1.387 albertel 4496: &Reply($client, \$qresult, $userinput);
1.234 foxr 4497: } else {
4498: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4499: "while attempting courseiddump\n", $userinput);
4500: }
4501: } else {
4502: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4503: "while attempting courseiddump\n", $userinput);
4504: }
4505: return 1;
4506: }
4507: ®ister_handler("courseiddump", \&dump_course_id_handler, 0, 1, 0);
1.238 foxr 4508:
1.438 raeburn 4509: sub course_lastaccess_handler {
4510: my ($cmd, $tail, $client) = @_;
4511: my $userinput = "$cmd:$tail";
4512: my ($cdom,$cnum) = split(':',$tail);
4513: my (%lastaccess,$qresult);
4514: my $hashref = &tie_domain_hash($cdom, "nohist_courseids", &GDBM_WRCREAT());
4515: if ($hashref) {
4516: while (my ($key,$value) = each(%$hashref)) {
4517: my ($unesc_key,$lasttime);
4518: $unesc_key = &unescape($key);
4519: if ($cnum) {
4520: next unless ($unesc_key =~ /\Q$cdom\E_\Q$cnum\E$/);
4521: }
4522: if ($unesc_key =~ /^lasttime:($LONCAPA::match_domain\_$LONCAPA::match_courseid)/) {
4523: $lastaccess{$1} = $value;
4524: } else {
4525: my $items = &Apache::lonnet::thaw_unescape($value);
4526: if (ref($items) eq 'HASH') {
4527: unless ($lastaccess{$unesc_key}) {
4528: $lastaccess{$unesc_key} = '';
4529: }
4530: } else {
4531: my @courseitems = split(':',$value);
4532: $lastaccess{$unesc_key} = pop(@courseitems);
4533: }
4534: }
4535: }
4536: foreach my $cid (sort(keys(%lastaccess))) {
4537: $qresult.=&escape($cid).'='.$lastaccess{$cid}.'&';
4538: }
4539: if (&untie_domain_hash($hashref)) {
4540: if ($qresult) {
4541: chop($qresult);
4542: }
4543: &Reply($client, \$qresult, $userinput);
4544: } else {
4545: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4546: "while attempting lastacourseaccess\n", $userinput);
4547: }
4548: } else {
4549: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4550: "while attempting lastcourseaccess\n", $userinput);
4551: }
4552: return 1;
4553: }
4554: ®ister_handler("courselastaccess",\&course_lastaccess_handler, 0, 1, 0);
4555:
1.238 foxr 4556: #
1.348 raeburn 4557: # Puts an unencrypted entry in a namespace db file at the domain level
4558: #
4559: # Parameters:
4560: # $cmd - The command that got us here.
4561: # $tail - Tail of the command (remaining parameters).
4562: # $client - File descriptor connected to client.
4563: # Returns
4564: # 0 - Requested to exit, caller should shut down.
4565: # 1 - Continue processing.
4566: # Side effects:
4567: # reply is written to $client.
4568: #
4569: sub put_domain_handler {
4570: my ($cmd,$tail,$client) = @_;
4571:
4572: my $userinput = "$cmd:$tail";
4573:
4574: my ($udom,$namespace,$what) =split(/:/,$tail,3);
4575: chomp($what);
4576: my @pairs=split(/\&/,$what);
4577: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_WRCREAT(),
4578: "P", $what);
4579: if ($hashref) {
4580: foreach my $pair (@pairs) {
4581: my ($key,$value)=split(/=/,$pair);
4582: $hashref->{$key}=$value;
4583: }
4584: if (&untie_domain_hash($hashref)) {
4585: &Reply($client, "ok\n", $userinput);
4586: } else {
4587: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4588: "while attempting putdom\n", $userinput);
4589: }
4590: } else {
4591: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4592: "while attempting putdom\n", $userinput);
4593: }
4594:
4595: return 1;
4596: }
4597: ®ister_handler("putdom", \&put_domain_handler, 0, 1, 0);
4598:
1.517 raeburn 4599: # Updates one or more entries in clickers.db file at the domain level
4600: #
4601: # Parameters:
4602: # $cmd - The command that got us here.
4603: # $tail - Tail of the command (remaining parameters).
4604: # In this case a colon separated list containing:
4605: # (a) the domain for which we are updating the entries,
4606: # (b) the action required -- add or del -- and
4607: # (c) a &-separated list of entries to add or delete.
4608: # $client - File descriptor connected to client.
4609: # Returns
4610: # 1 - Continue processing.
4611: # 0 - Requested to exit, caller should shut down.
4612: # Side effects:
4613: # reply is written to $client.
4614: #
4615:
4616:
4617: sub update_clickers {
4618: my ($cmd, $tail, $client) = @_;
4619:
4620: my $userinput = "$cmd:$tail";
4621: my ($udom,$action,$what) =split(/:/,$tail,3);
4622: chomp($what);
4623:
4624: my $hashref = &tie_domain_hash($udom, "clickers", &GDBM_WRCREAT(),
4625: "U","$action:$what");
4626:
4627: if (!$hashref) {
4628: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4629: "while attempting updateclickers\n", $userinput);
4630: return 1;
4631: }
4632:
4633: my @pairs=split(/\&/,$what);
4634: foreach my $pair (@pairs) {
4635: my ($key,$value)=split(/=/,$pair);
4636: if ($action eq 'add') {
4637: if (exists($hashref->{$key})) {
4638: my @newvals = split(/,/,&unescape($value));
4639: my @currvals = split(/,/,&unescape($hashref->{$key}));
4640: my @merged = sort(keys(%{{map { $_ => 1 } (@newvals,@currvals)}}));
4641: $hashref->{$key}=&escape(join(',',@merged));
4642: } else {
4643: $hashref->{$key}=$value;
4644: }
4645: } elsif ($action eq 'del') {
4646: if (exists($hashref->{$key})) {
4647: my %current;
4648: map { $current{$_} = 1; } split(/,/,&unescape($hashref->{$key}));
4649: map { delete($current{$_}); } split(/,/,&unescape($value));
4650: if (keys(%current)) {
4651: $hashref->{$key}=&escape(join(',',sort(keys(%current))));
4652: } else {
4653: delete($hashref->{$key});
4654: }
4655: }
4656: }
4657: }
4658: if (&untie_user_hash($hashref)) {
4659: &Reply( $client, "ok\n", $userinput);
4660: } else {
4661: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
4662: "while attempting put\n",
4663: $userinput);
4664: }
4665: return 1;
4666: }
4667: ®ister_handler("updateclickers", \&update_clickers, 0, 1, 0);
4668:
4669:
4670: # Deletes one or more entries in a namespace db file at the domain level
4671: #
4672: # Parameters:
4673: # $cmd - The command that got us here.
4674: # $tail - Tail of the command (remaining parameters).
4675: # In this case a colon separated list containing:
4676: # (a) the domain for which we are deleting the entries,
4677: # (b) &-separated list of keys to delete.
4678: # $client - File descriptor connected to client.
4679: # Returns
4680: # 1 - Continue processing.
4681: # 0 - Requested to exit, caller should shut down.
4682: # Side effects:
4683: # reply is written to $client.
4684: #
4685:
4686: sub del_domain_handler {
4687: my ($cmd,$tail,$client) = @_;
4688:
4689: my $userinput = "$cmd:$tail";
4690:
4691: my ($udom,$namespace,$what)=split(/:/,$tail,3);
4692: chomp($what);
4693: my $hashref = &tie_domain_hash($udom,$namespace,&GDBM_WRCREAT(),
4694: "D", $what);
4695: if ($hashref) {
4696: my @keys=split(/\&/,$what);
4697: foreach my $key (@keys) {
4698: delete($hashref->{$key});
4699: }
4700: if (&untie_user_hash($hashref)) {
4701: &Reply($client, "ok\n", $userinput);
4702: } else {
4703: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4704: "while attempting deldom\n", $userinput);
4705: }
4706: } else {
4707: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4708: "while attempting deldom\n", $userinput);
4709: }
4710: return 1;
4711: }
4712: ®ister_handler("deldom", \&del_domain_handler, 0, 1, 0);
4713:
4714:
1.348 raeburn 4715: # Unencrypted get from the namespace database file at the domain level.
4716: # This function retrieves a keyed item from a specific named database in the
4717: # domain directory.
4718: #
4719: # Parameters:
4720: # $cmd - Command request keyword (get).
4721: # $tail - Tail of the command. This is a colon separated list
4722: # consisting of the domain and the 'namespace'
4723: # which selects the gdbm file to do the lookup in,
4724: # & separated list of keys to lookup. Note that
4725: # the values are returned as an & separated list too.
4726: # $client - File descriptor open on the client.
4727: # Returns:
4728: # 1 - Continue processing.
4729: # 0 - Exit.
4730: # Side effects:
4731: # reply is written to $client.
4732: #
4733:
4734: sub get_domain_handler {
4735: my ($cmd, $tail, $client) = @_;
4736:
1.461 foxr 4737:
1.348 raeburn 4738: my $userinput = "$client:$tail";
4739:
4740: my ($udom,$namespace,$what)=split(/:/,$tail,3);
4741: chomp($what);
4742: my @queries=split(/\&/,$what);
4743: my $qresult='';
4744: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_READER());
4745: if ($hashref) {
4746: for (my $i=0;$i<=$#queries;$i++) {
4747: $qresult.="$hashref->{$queries[$i]}&";
4748: }
4749: if (&untie_domain_hash($hashref)) {
4750: $qresult=~s/\&$//;
1.387 albertel 4751: &Reply($client, \$qresult, $userinput);
1.348 raeburn 4752: } else {
4753: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
4754: "while attempting getdom\n",$userinput);
4755: }
4756: } else {
4757: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4758: "while attempting getdom\n",$userinput);
4759: }
4760:
4761: return 1;
4762: }
1.360 raeburn 4763: ®ister_handler("getdom", \&get_domain_handler, 0, 1, 0);
1.348 raeburn 4764:
1.420 raeburn 4765: #
1.238 foxr 4766: # Puts an id to a domains id database.
4767: #
4768: # Parameters:
4769: # $cmd - The command that triggered us.
4770: # $tail - Remainder of the request other than the command. This is a
4771: # colon separated list containing:
4772: # $domain - The domain for which we are writing the id.
4773: # $pairs - The id info to write... this is and & separated list
4774: # of keyword=value.
4775: # $client - Socket open on the client.
4776: # Returns:
4777: # 1 - Continue processing.
4778: # Side effects:
4779: # reply is written to $client.
4780: #
4781: sub put_id_handler {
4782: my ($cmd,$tail,$client) = @_;
4783:
4784:
4785: my $userinput = "$cmd:$tail";
4786:
4787: my ($udom,$what)=split(/:/,$tail);
4788: chomp($what);
4789: my @pairs=split(/\&/,$what);
4790: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
4791: "P", $what);
4792: if ($hashref) {
4793: foreach my $pair (@pairs) {
4794: my ($key,$value)=split(/=/,$pair);
4795: $hashref->{$key}=$value;
4796: }
1.311 albertel 4797: if (&untie_domain_hash($hashref)) {
1.238 foxr 4798: &Reply($client, "ok\n", $userinput);
4799: } else {
4800: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4801: "while attempting idput\n", $userinput);
4802: }
4803: } else {
4804: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4805: "while attempting idput\n", $userinput);
4806: }
4807:
4808: return 1;
4809: }
1.263 albertel 4810: ®ister_handler("idput", \&put_id_handler, 0, 1, 0);
1.238 foxr 4811:
4812: #
4813: # Retrieves a set of id values from the id database.
4814: # Returns an & separated list of results, one for each requested id to the
4815: # client.
4816: #
4817: # Parameters:
4818: # $cmd - Command keyword that caused us to be dispatched.
4819: # $tail - Tail of the command. Consists of a colon separated:
4820: # domain - the domain whose id table we dump
4821: # ids Consists of an & separated list of
4822: # id keywords whose values will be fetched.
4823: # nonexisting keywords will have an empty value.
4824: # $client - Socket open on the client.
4825: #
4826: # Returns:
4827: # 1 - indicating processing should continue.
4828: # Side effects:
4829: # An & separated list of results is written to $client.
4830: #
4831: sub get_id_handler {
4832: my ($cmd, $tail, $client) = @_;
4833:
4834:
4835: my $userinput = "$client:$tail";
4836:
4837: my ($udom,$what)=split(/:/,$tail);
4838: chomp($what);
4839: my @queries=split(/\&/,$what);
4840: my $qresult='';
4841: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_READER());
4842: if ($hashref) {
4843: for (my $i=0;$i<=$#queries;$i++) {
4844: $qresult.="$hashref->{$queries[$i]}&";
4845: }
1.311 albertel 4846: if (&untie_domain_hash($hashref)) {
1.238 foxr 4847: $qresult=~s/\&$//;
1.387 albertel 4848: &Reply($client, \$qresult, $userinput);
1.238 foxr 4849: } else {
4850: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
4851: "while attempting idget\n",$userinput);
4852: }
4853: } else {
4854: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4855: "while attempting idget\n",$userinput);
4856: }
4857:
4858: return 1;
4859: }
1.263 albertel 4860: ®ister_handler("idget", \&get_id_handler, 0, 1, 0);
1.238 foxr 4861:
1.501 raeburn 4862: # Deletes one or more ids in a domain's id database.
4863: #
4864: # Parameters:
4865: # $cmd - Command keyword (iddel).
4866: # $tail - Command tail. In this case a colon
4867: # separated list containing:
4868: # The domain for which we are deleting the id(s).
4869: # &-separated list of id(s) to delete.
4870: # $client - File open on client socket.
4871: # Returns:
4872: # 1 - Continue processing
4873: # 0 - Exit server.
4874: #
4875: #
4876:
4877: sub del_id_handler {
4878: my ($cmd,$tail,$client) = @_;
4879:
4880: my $userinput = "$cmd:$tail";
4881:
4882: my ($udom,$what)=split(/:/,$tail);
4883: chomp($what);
4884: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
4885: "D", $what);
4886: if ($hashref) {
4887: my @keys=split(/\&/,$what);
4888: foreach my $key (@keys) {
4889: delete($hashref->{$key});
4890: }
4891: if (&untie_user_hash($hashref)) {
4892: &Reply($client, "ok\n", $userinput);
4893: } else {
4894: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4895: "while attempting iddel\n", $userinput);
4896: }
4897: } else {
4898: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4899: "while attempting iddel\n", $userinput);
4900: }
4901: return 1;
4902: }
4903: ®ister_handler("iddel", \&del_id_handler, 0, 1, 0);
4904:
1.238 foxr 4905: #
1.299 raeburn 4906: # Puts broadcast e-mail sent by Domain Coordinator in nohist_dcmail database
4907: #
4908: # Parameters
4909: # $cmd - Command keyword that caused us to be dispatched.
4910: # $tail - Tail of the command. Consists of a colon separated:
4911: # domain - the domain whose dcmail we are recording
4912: # email Consists of key=value pair
4913: # where key is unique msgid
4914: # and value is message (in XML)
4915: # $client - Socket open on the client.
4916: #
4917: # Returns:
4918: # 1 - indicating processing should continue.
4919: # Side effects
4920: # reply is written to $client.
4921: #
4922: sub put_dcmail_handler {
4923: my ($cmd,$tail,$client) = @_;
4924: my $userinput = "$cmd:$tail";
1.463 foxr 4925:
4926:
1.299 raeburn 4927: my ($udom,$what)=split(/:/,$tail);
4928: chomp($what);
4929: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
4930: if ($hashref) {
4931: my ($key,$value)=split(/=/,$what);
4932: $hashref->{$key}=$value;
4933: }
1.311 albertel 4934: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4935: &Reply($client, "ok\n", $userinput);
4936: } else {
4937: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4938: "while attempting dcmailput\n", $userinput);
4939: }
4940: return 1;
4941: }
4942: ®ister_handler("dcmailput", \&put_dcmail_handler, 0, 1, 0);
4943:
4944: #
4945: # Retrieves broadcast e-mail from nohist_dcmail database
4946: # Returns to client an & separated list of key=value pairs,
4947: # where key is msgid and value is message information.
4948: #
4949: # Parameters
4950: # $cmd - Command keyword that caused us to be dispatched.
4951: # $tail - Tail of the command. Consists of a colon separated:
4952: # domain - the domain whose dcmail table we dump
4953: # startfilter - beginning of time window
4954: # endfilter - end of time window
4955: # sendersfilter - & separated list of username:domain
4956: # for senders to search for.
4957: # $client - Socket open on the client.
4958: #
4959: # Returns:
4960: # 1 - indicating processing should continue.
4961: # Side effects
4962: # reply (& separated list of msgid=messageinfo pairs) is
4963: # written to $client.
4964: #
4965: sub dump_dcmail_handler {
4966: my ($cmd, $tail, $client) = @_;
4967:
4968: my $userinput = "$cmd:$tail";
4969: my ($udom,$startfilter,$endfilter,$sendersfilter) = split(/:/,$tail);
4970: chomp($sendersfilter);
4971: my @senders = ();
4972: if (defined($startfilter)) {
4973: $startfilter=&unescape($startfilter);
4974: } else {
4975: $startfilter='.';
4976: }
4977: if (defined($endfilter)) {
4978: $endfilter=&unescape($endfilter);
4979: } else {
4980: $endfilter='.';
4981: }
4982: if (defined($sendersfilter)) {
4983: $sendersfilter=&unescape($sendersfilter);
1.300 albertel 4984: @senders = map { &unescape($_) } split(/\&/,$sendersfilter);
1.299 raeburn 4985: }
4986:
4987: my $qresult='';
4988: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
4989: if ($hashref) {
4990: while (my ($key,$value) = each(%$hashref)) {
4991: my $match = 1;
1.303 albertel 4992: my ($timestamp,$subj,$uname,$udom) =
4993: split(/:/,&unescape(&unescape($key)),5); # yes, twice really
1.299 raeburn 4994: $subj = &unescape($subj);
4995: unless ($startfilter eq '.' || !defined($startfilter)) {
4996: if ($timestamp < $startfilter) {
4997: $match = 0;
4998: }
4999: }
5000: unless ($endfilter eq '.' || !defined($endfilter)) {
5001: if ($timestamp > $endfilter) {
5002: $match = 0;
5003: }
5004: }
5005: unless (@senders < 1) {
5006: unless (grep/^$uname:$udom$/,@senders) {
5007: $match = 0;
5008: }
5009: }
5010: if ($match == 1) {
5011: $qresult.=$key.'='.$value.'&';
5012: }
5013: }
1.311 albertel 5014: if (&untie_domain_hash($hashref)) {
1.299 raeburn 5015: chop($qresult);
1.387 albertel 5016: &Reply($client, \$qresult, $userinput);
1.299 raeburn 5017: } else {
5018: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5019: "while attempting dcmaildump\n", $userinput);
5020: }
5021: } else {
5022: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
5023: "while attempting dcmaildump\n", $userinput);
5024: }
5025: return 1;
5026: }
5027:
5028: ®ister_handler("dcmaildump", \&dump_dcmail_handler, 0, 1, 0);
5029:
5030: #
5031: # Puts domain roles in nohist_domainroles database
5032: #
5033: # Parameters
5034: # $cmd - Command keyword that caused us to be dispatched.
5035: # $tail - Tail of the command. Consists of a colon separated:
5036: # domain - the domain whose roles we are recording
5037: # role - Consists of key=value pair
5038: # where key is unique role
5039: # and value is start/end date information
5040: # $client - Socket open on the client.
5041: #
5042: # Returns:
5043: # 1 - indicating processing should continue.
5044: # Side effects
5045: # reply is written to $client.
5046: #
5047:
5048: sub put_domainroles_handler {
5049: my ($cmd,$tail,$client) = @_;
5050:
5051: my $userinput = "$cmd:$tail";
5052: my ($udom,$what)=split(/:/,$tail);
5053: chomp($what);
5054: my @pairs=split(/\&/,$what);
5055: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
5056: if ($hashref) {
5057: foreach my $pair (@pairs) {
5058: my ($key,$value)=split(/=/,$pair);
5059: $hashref->{$key}=$value;
5060: }
1.311 albertel 5061: if (&untie_domain_hash($hashref)) {
1.299 raeburn 5062: &Reply($client, "ok\n", $userinput);
5063: } else {
5064: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5065: "while attempting domroleput\n", $userinput);
5066: }
5067: } else {
5068: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5069: "while attempting domroleput\n", $userinput);
5070: }
5071:
5072: return 1;
5073: }
5074:
5075: ®ister_handler("domroleput", \&put_domainroles_handler, 0, 1, 0);
5076:
5077: #
5078: # Retrieves domain roles from nohist_domainroles database
5079: # Returns to client an & separated list of key=value pairs,
5080: # where key is role and value is start and end date information.
5081: #
5082: # Parameters
5083: # $cmd - Command keyword that caused us to be dispatched.
5084: # $tail - Tail of the command. Consists of a colon separated:
5085: # domain - the domain whose domain roles table we dump
5086: # $client - Socket open on the client.
5087: #
5088: # Returns:
5089: # 1 - indicating processing should continue.
5090: # Side effects
5091: # reply (& separated list of role=start/end info pairs) is
5092: # written to $client.
5093: #
5094: sub dump_domainroles_handler {
5095: my ($cmd, $tail, $client) = @_;
5096:
5097: my $userinput = "$cmd:$tail";
5098: my ($udom,$startfilter,$endfilter,$rolesfilter) = split(/:/,$tail);
5099: chomp($rolesfilter);
5100: my @roles = ();
5101: if (defined($startfilter)) {
5102: $startfilter=&unescape($startfilter);
5103: } else {
5104: $startfilter='.';
5105: }
5106: if (defined($endfilter)) {
5107: $endfilter=&unescape($endfilter);
5108: } else {
5109: $endfilter='.';
5110: }
5111: if (defined($rolesfilter)) {
5112: $rolesfilter=&unescape($rolesfilter);
1.300 albertel 5113: @roles = split(/\&/,$rolesfilter);
1.299 raeburn 5114: }
1.421 raeburn 5115:
1.299 raeburn 5116: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
5117: if ($hashref) {
5118: my $qresult = '';
5119: while (my ($key,$value) = each(%$hashref)) {
5120: my $match = 1;
1.421 raeburn 5121: my ($end,$start) = split(/:/,&unescape($value));
1.299 raeburn 5122: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,&unescape($key));
1.421 raeburn 5123: unless (@roles < 1) {
5124: unless (grep/^\Q$trole\E$/,@roles) {
5125: $match = 0;
5126: next;
5127: }
5128: }
1.299 raeburn 5129: unless ($startfilter eq '.' || !defined($startfilter)) {
1.415 raeburn 5130: if ((defined($start)) && ($start >= $startfilter)) {
1.299 raeburn 5131: $match = 0;
1.421 raeburn 5132: next;
1.299 raeburn 5133: }
5134: }
5135: unless ($endfilter eq '.' || !defined($endfilter)) {
1.421 raeburn 5136: if ((defined($end)) && (($end > 0) && ($end <= $endfilter))) {
1.299 raeburn 5137: $match = 0;
1.421 raeburn 5138: next;
1.299 raeburn 5139: }
5140: }
5141: if ($match == 1) {
5142: $qresult.=$key.'='.$value.'&';
5143: }
5144: }
1.311 albertel 5145: if (&untie_domain_hash($hashref)) {
1.299 raeburn 5146: chop($qresult);
1.387 albertel 5147: &Reply($client, \$qresult, $userinput);
1.299 raeburn 5148: } else {
5149: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5150: "while attempting domrolesdump\n", $userinput);
5151: }
5152: } else {
5153: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
5154: "while attempting domrolesdump\n", $userinput);
5155: }
5156: return 1;
5157: }
5158:
5159: ®ister_handler("domrolesdump", \&dump_domainroles_handler, 0, 1, 0);
5160:
5161:
1.238 foxr 5162: # Process the tmpput command I'm not sure what this does.. Seems to
5163: # create a file in the lonDaemons/tmp directory of the form $id.tmp
5164: # where Id is the client's ip concatenated with a sequence number.
5165: # The file will contain some value that is passed in. Is this e.g.
5166: # a login token?
5167: #
5168: # Parameters:
5169: # $cmd - The command that got us dispatched.
5170: # $tail - The remainder of the request following $cmd:
5171: # In this case this will be the contents of the file.
5172: # $client - Socket connected to the client.
5173: # Returns:
5174: # 1 indicating processing can continue.
5175: # Side effects:
5176: # A file is created in the local filesystem.
5177: # A reply is sent to the client.
5178: sub tmp_put_handler {
5179: my ($cmd, $what, $client) = @_;
5180:
5181: my $userinput = "$cmd:$what"; # Reconstruct for logging.
5182:
1.347 raeburn 5183: my ($record,$context) = split(/:/,$what);
5184: if ($context ne '') {
5185: chomp($context);
5186: $context = &unescape($context);
5187: }
5188: my ($id,$store);
1.238 foxr 5189: $tmpsnum++;
1.454 raeburn 5190: if (($context eq 'resetpw') || ($context eq 'createaccount')) {
1.347 raeburn 5191: $id = &md5_hex(&md5_hex(time.{}.rand().$$));
5192: } else {
5193: $id = $$.'_'.$clientip.'_'.$tmpsnum;
5194: }
1.238 foxr 5195: $id=~s/\W/\_/g;
1.347 raeburn 5196: $record=~s/\n//g;
1.238 foxr 5197: my $execdir=$perlvar{'lonDaemons'};
5198: if ($store=IO::File->new(">$execdir/tmp/$id.tmp")) {
1.347 raeburn 5199: print $store $record;
1.238 foxr 5200: close $store;
1.387 albertel 5201: &Reply($client, \$id, $userinput);
1.238 foxr 5202: } else {
5203: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
5204: "while attempting tmpput\n", $userinput);
5205: }
5206: return 1;
5207:
5208: }
5209: ®ister_handler("tmpput", \&tmp_put_handler, 0, 1, 0);
1.263 albertel 5210:
1.238 foxr 5211: # Processes the tmpget command. This command returns the contents
5212: # of a temporary resource file(?) created via tmpput.
5213: #
5214: # Paramters:
5215: # $cmd - Command that got us dispatched.
5216: # $id - Tail of the command, contain the id of the resource
5217: # we want to fetch.
5218: # $client - socket open on the client.
5219: # Return:
5220: # 1 - Inidcating processing can continue.
5221: # Side effects:
5222: # A reply is sent to the client.
5223: #
5224: sub tmp_get_handler {
5225: my ($cmd, $id, $client) = @_;
5226:
5227: my $userinput = "$cmd:$id";
5228:
5229:
5230: $id=~s/\W/\_/g;
5231: my $store;
5232: my $execdir=$perlvar{'lonDaemons'};
5233: if ($store=IO::File->new("$execdir/tmp/$id.tmp")) {
5234: my $reply=<$store>;
1.387 albertel 5235: &Reply( $client, \$reply, $userinput);
1.238 foxr 5236: close $store;
5237: } else {
5238: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
5239: "while attempting tmpget\n", $userinput);
5240: }
5241:
5242: return 1;
5243: }
5244: ®ister_handler("tmpget", \&tmp_get_handler, 0, 1, 0);
1.263 albertel 5245:
1.238 foxr 5246: #
5247: # Process the tmpdel command. This command deletes a temp resource
5248: # created by the tmpput command.
5249: #
5250: # Parameters:
5251: # $cmd - Command that got us here.
5252: # $id - Id of the temporary resource created.
5253: # $client - socket open on the client process.
5254: #
5255: # Returns:
5256: # 1 - Indicating processing should continue.
5257: # Side Effects:
5258: # A file is deleted
5259: # A reply is sent to the client.
5260: sub tmp_del_handler {
5261: my ($cmd, $id, $client) = @_;
5262:
5263: my $userinput= "$cmd:$id";
5264:
5265: chomp($id);
5266: $id=~s/\W/\_/g;
5267: my $execdir=$perlvar{'lonDaemons'};
5268: if (unlink("$execdir/tmp/$id.tmp")) {
5269: &Reply($client, "ok\n", $userinput);
5270: } else {
5271: &Failure( $client, "error: ".($!+0)."Unlink tmp Failed ".
5272: "while attempting tmpdel\n", $userinput);
5273: }
5274:
5275: return 1;
5276:
5277: }
5278: ®ister_handler("tmpdel", \&tmp_del_handler, 0, 1, 0);
1.263 albertel 5279:
1.238 foxr 5280: #
1.246 foxr 5281: # Processes the setannounce command. This command
5282: # creates a file named announce.txt in the top directory of
5283: # the documentn root and sets its contents. The announce.txt file is
5284: # printed in its entirety at the LonCAPA login page. Note:
5285: # once the announcement.txt fileis created it cannot be deleted.
5286: # However, setting the contents of the file to empty removes the
5287: # announcement from the login page of loncapa so who cares.
5288: #
5289: # Parameters:
5290: # $cmd - The command that got us dispatched.
5291: # $announcement - The text of the announcement.
5292: # $client - Socket open on the client process.
5293: # Retunrns:
5294: # 1 - Indicating request processing should continue
5295: # Side Effects:
5296: # The file {DocRoot}/announcement.txt is created.
5297: # A reply is sent to $client.
5298: #
5299: sub set_announce_handler {
5300: my ($cmd, $announcement, $client) = @_;
5301:
5302: my $userinput = "$cmd:$announcement";
5303:
5304: chomp($announcement);
5305: $announcement=&unescape($announcement);
5306: if (my $store=IO::File->new('>'.$perlvar{'lonDocRoot'}.
5307: '/announcement.txt')) {
5308: print $store $announcement;
5309: close $store;
5310: &Reply($client, "ok\n", $userinput);
5311: } else {
5312: &Failure($client, "error: ".($!+0)."\n", $userinput);
5313: }
5314:
5315: return 1;
5316: }
5317: ®ister_handler("setannounce", \&set_announce_handler, 0, 1, 0);
1.263 albertel 5318:
1.246 foxr 5319: #
5320: # Return the version of the daemon. This can be used to determine
5321: # the compatibility of cross version installations or, alternatively to
5322: # simply know who's out of date and who isn't. Note that the version
5323: # is returned concatenated with the tail.
5324: # Parameters:
5325: # $cmd - the request that dispatched to us.
5326: # $tail - Tail of the request (client's version?).
5327: # $client - Socket open on the client.
5328: #Returns:
5329: # 1 - continue processing requests.
5330: # Side Effects:
5331: # Replies with version to $client.
5332: sub get_version_handler {
5333: my ($cmd, $tail, $client) = @_;
5334:
5335: my $userinput = $cmd.$tail;
5336:
5337: &Reply($client, &version($userinput)."\n", $userinput);
5338:
5339:
5340: return 1;
5341: }
5342: ®ister_handler("version", \&get_version_handler, 0, 1, 0);
1.263 albertel 5343:
1.246 foxr 5344: # Set the current host and domain. This is used to support
5345: # multihomed systems. Each IP of the system, or even separate daemons
5346: # on the same IP can be treated as handling a separate lonCAPA virtual
5347: # machine. This command selects the virtual lonCAPA. The client always
5348: # knows the right one since it is lonc and it is selecting the domain/system
5349: # from the hosts.tab file.
5350: # Parameters:
5351: # $cmd - Command that dispatched us.
5352: # $tail - Tail of the command (domain/host requested).
5353: # $socket - Socket open on the client.
5354: #
5355: # Returns:
5356: # 1 - Indicates the program should continue to process requests.
5357: # Side-effects:
5358: # The default domain/system context is modified for this daemon.
5359: # a reply is sent to the client.
5360: #
5361: sub set_virtual_host_handler {
5362: my ($cmd, $tail, $socket) = @_;
5363:
5364: my $userinput ="$cmd:$tail";
5365:
5366: &Reply($client, &sethost($userinput)."\n", $userinput);
5367:
5368:
5369: return 1;
5370: }
1.247 albertel 5371: ®ister_handler("sethost", \&set_virtual_host_handler, 0, 1, 0);
1.246 foxr 5372:
5373: # Process a request to exit:
5374: # - "bye" is sent to the client.
5375: # - The client socket is shutdown and closed.
5376: # - We indicate to the caller that we should exit.
5377: # Formal Parameters:
5378: # $cmd - The command that got us here.
5379: # $tail - Tail of the command (empty).
5380: # $client - Socket open on the tail.
5381: # Returns:
5382: # 0 - Indicating the program should exit!!
5383: #
5384: sub exit_handler {
5385: my ($cmd, $tail, $client) = @_;
5386:
5387: my $userinput = "$cmd:$tail";
5388:
5389: &logthis("Client $clientip ($clientname) hanging up: $userinput");
5390: &Reply($client, "bye\n", $userinput);
5391: $client->shutdown(2); # shutdown the socket forcibly.
5392: $client->close();
5393:
5394: return 0;
5395: }
1.248 foxr 5396: ®ister_handler("exit", \&exit_handler, 0,1,1);
5397: ®ister_handler("init", \&exit_handler, 0,1,1);
5398: ®ister_handler("quit", \&exit_handler, 0,1,1);
5399:
5400: # Determine if auto-enrollment is enabled.
5401: # Note that the original had what I believe to be a defect.
5402: # The original returned 0 if the requestor was not a registerd client.
5403: # It should return "refused".
5404: # Formal Parameters:
5405: # $cmd - The command that invoked us.
5406: # $tail - The tail of the command (Extra command parameters.
5407: # $client - The socket open on the client that issued the request.
5408: # Returns:
5409: # 1 - Indicating processing should continue.
5410: #
5411: sub enrollment_enabled_handler {
5412: my ($cmd, $tail, $client) = @_;
5413: my $userinput = $cmd.":".$tail; # For logging purposes.
5414:
5415:
1.337 albertel 5416: my ($cdom) = split(/:/, $tail, 2); # Domain we're asking about.
5417:
1.248 foxr 5418: my $outcome = &localenroll::run($cdom);
1.387 albertel 5419: &Reply($client, \$outcome, $userinput);
1.248 foxr 5420:
5421: return 1;
5422: }
5423: ®ister_handler("autorun", \&enrollment_enabled_handler, 0, 1, 0);
5424:
1.417 raeburn 5425: #
1.423 raeburn 5426: # Validate an institutional code used for a LON-CAPA course.
1.417 raeburn 5427: #
5428: # Formal Parameters:
5429: # $cmd - The command request that got us dispatched.
5430: # $tail - The tail of the command. In this case,
5431: # this is a colon separated set of words that will be split
5432: # into:
1.424 raeburn 5433: # $dom - The domain for which the check of
5434: # institutional course code will occur.
5435: #
5436: # $instcode - The institutional code for the course
5437: # being requested, or validated for rights
5438: # to request.
5439: #
5440: # $owner - The course requestor (who will be the
5441: # course owner, in the form username:domain
5442: #
1.417 raeburn 5443: # $client - Socket open on the client.
5444: # Returns:
5445: # 1 - Indicating processing should continue.
5446: #
5447: sub validate_instcode_handler {
5448: my ($cmd, $tail, $client) = @_;
5449: my $userinput = "$cmd:$tail";
1.423 raeburn 5450: my ($dom,$instcode,$owner) = split(/:/, $tail);
1.422 raeburn 5451: $instcode = &unescape($instcode);
5452: $owner = &unescape($owner);
1.498 raeburn 5453: my ($outcome,$description,$credits) =
1.426 raeburn 5454: &localenroll::validate_instcode($dom,$instcode,$owner);
1.498 raeburn 5455: my $result = &escape($outcome).'&'.&escape($description).'&'.
5456: &escape($credits);
1.426 raeburn 5457: &Reply($client, \$result, $userinput);
1.417 raeburn 5458:
5459: return 1;
5460: }
5461: ®ister_handler("autovalidateinstcode", \&validate_instcode_handler, 0, 1, 0);
5462:
1.248 foxr 5463: # Get the official sections for which auto-enrollment is possible.
5464: # Since the admin people won't know about 'unofficial sections'
5465: # we cannot auto-enroll on them.
5466: # Formal Parameters:
5467: # $cmd - The command request that got us dispatched here.
5468: # $tail - The remainder of the request. In our case this
5469: # will be split into:
5470: # $coursecode - The course name from the admin point of view.
5471: # $cdom - The course's domain(?).
5472: # $client - Socket open on the client.
5473: # Returns:
5474: # 1 - Indiciting processing should continue.
5475: #
5476: sub get_sections_handler {
5477: my ($cmd, $tail, $client) = @_;
5478: my $userinput = "$cmd:$tail";
5479:
5480: my ($coursecode, $cdom) = split(/:/, $tail);
5481: my @secs = &localenroll::get_sections($coursecode,$cdom);
5482: my $seclist = &escape(join(':',@secs));
5483:
1.387 albertel 5484: &Reply($client, \$seclist, $userinput);
1.248 foxr 5485:
5486:
5487: return 1;
5488: }
5489: ®ister_handler("autogetsections", \&get_sections_handler, 0, 1, 0);
5490:
5491: # Validate the owner of a new course section.
5492: #
5493: # Formal Parameters:
5494: # $cmd - Command that got us dispatched.
5495: # $tail - the remainder of the command. For us this consists of a
5496: # colon separated string containing:
5497: # $inst - Course Id from the institutions point of view.
5498: # $owner - Proposed owner of the course.
5499: # $cdom - Domain of the course (from the institutions
5500: # point of view?)..
5501: # $client - Socket open on the client.
5502: #
5503: # Returns:
5504: # 1 - Processing should continue.
5505: #
5506: sub validate_course_owner_handler {
5507: my ($cmd, $tail, $client) = @_;
5508: my $userinput = "$cmd:$tail";
1.470 raeburn 5509: my ($inst_course_id, $owner, $cdom, $coowners) = split(/:/, $tail);
5510:
1.336 raeburn 5511: $owner = &unescape($owner);
1.470 raeburn 5512: $coowners = &unescape($coowners);
5513: my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom,$coowners);
1.387 albertel 5514: &Reply($client, \$outcome, $userinput);
1.248 foxr 5515:
5516:
5517:
5518: return 1;
5519: }
5520: ®ister_handler("autonewcourse", \&validate_course_owner_handler, 0, 1, 0);
1.263 albertel 5521:
1.248 foxr 5522: #
5523: # Validate a course section in the official schedule of classes
5524: # from the institutions point of view (part of autoenrollment).
5525: #
5526: # Formal Parameters:
5527: # $cmd - The command request that got us dispatched.
5528: # $tail - The tail of the command. In this case,
5529: # this is a colon separated set of words that will be split
5530: # into:
5531: # $inst_course_id - The course/section id from the
5532: # institutions point of view.
5533: # $cdom - The domain from the institutions
5534: # point of view.
5535: # $client - Socket open on the client.
5536: # Returns:
5537: # 1 - Indicating processing should continue.
5538: #
5539: sub validate_course_section_handler {
5540: my ($cmd, $tail, $client) = @_;
5541: my $userinput = "$cmd:$tail";
5542: my ($inst_course_id, $cdom) = split(/:/, $tail);
5543:
5544: my $outcome=&localenroll::validate_courseID($inst_course_id,$cdom);
1.387 albertel 5545: &Reply($client, \$outcome, $userinput);
1.248 foxr 5546:
5547:
5548: return 1;
5549: }
5550: ®ister_handler("autovalidatecourse", \&validate_course_section_handler, 0, 1, 0);
5551:
5552: #
1.340 raeburn 5553: # Validate course owner's access to enrollment data for specific class section.
5554: #
5555: #
5556: # Formal Parameters:
5557: # $cmd - The command request that got us dispatched.
5558: # $tail - The tail of the command. In this case this is a colon separated
5559: # set of words that will be split into:
5560: # $inst_class - Institutional code for the specific class section
5561: # $courseowner - The escaped username:domain of the course owner
5562: # $cdom - The domain of the course from the institution's
5563: # point of view.
5564: # $client - The socket open on the client.
5565: # Returns:
5566: # 1 - continue processing.
5567: #
5568:
5569: sub validate_class_access_handler {
5570: my ($cmd, $tail, $client) = @_;
5571: my $userinput = "$cmd:$tail";
1.383 raeburn 5572: my ($inst_class,$ownerlist,$cdom) = split(/:/, $tail);
1.392 raeburn 5573: my $owners = &unescape($ownerlist);
1.341 albertel 5574: my $outcome;
5575: eval {
5576: local($SIG{__DIE__})='DEFAULT';
1.392 raeburn 5577: $outcome=&localenroll::check_section($inst_class,$owners,$cdom);
1.341 albertel 5578: };
1.387 albertel 5579: &Reply($client,\$outcome, $userinput);
1.340 raeburn 5580:
5581: return 1;
5582: }
5583: ®ister_handler("autovalidateclass_sec", \&validate_class_access_handler, 0, 1, 0);
5584:
5585: #
5586: # Create a password for a new LON-CAPA user added by auto-enrollment.
5587: # Only used for case where authentication method for new user is localauth
1.248 foxr 5588: #
5589: # Formal Parameters:
5590: # $cmd - The command request that got us dispatched.
5591: # $tail - The tail of the command. In this case this is a colon separated
5592: # set of words that will be split into:
1.340 raeburn 5593: # $authparam - An authentication parameter (localauth parameter).
1.248 foxr 5594: # $cdom - The domain of the course from the institution's
5595: # point of view.
5596: # $client - The socket open on the client.
5597: # Returns:
5598: # 1 - continue processing.
5599: #
5600: sub create_auto_enroll_password_handler {
5601: my ($cmd, $tail, $client) = @_;
5602: my $userinput = "$cmd:$tail";
5603:
5604: my ($authparam, $cdom) = split(/:/, $userinput);
5605:
5606: my ($create_passwd,$authchk);
5607: ($authparam,
5608: $create_passwd,
5609: $authchk) = &localenroll::create_password($authparam,$cdom);
5610:
5611: &Reply($client, &escape($authparam.':'.$create_passwd.':'.$authchk)."\n",
5612: $userinput);
5613:
5614:
5615: return 1;
5616: }
5617: ®ister_handler("autocreatepassword", \&create_auto_enroll_password_handler,
5618: 0, 1, 0);
5619:
1.522 raeburn 5620: sub auto_export_grades_handler {
5621: my ($cmd, $tail, $client) = @_;
5622: my $userinput = "$cmd:$tail";
5623: my ($cdom,$cnum,$info,$data) = split(/:/,$tail);
5624: my $inforef = &Apache::lonnet::thaw_unescape($info);
5625: my $dataref = &Apache::lonnet::thaw_unescape($data);
5626: my ($outcome,$result);;
5627: eval {
5628: local($SIG{__DIE__})='DEFAULT';
5629: my %rtnhash;
5630: $outcome=&localenroll::export_grades($cdom,$cnum,$inforef,$dataref,\%rtnhash);
5631: if ($outcome eq 'ok') {
5632: foreach my $key (keys(%rtnhash)) {
5633: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&';
5634: }
5635: $result =~ s/\&$//;
5636: }
5637: };
5638: if (!$@) {
5639: if ($outcome eq 'ok') {
5640: if ($cipher) {
5641: my $cmdlength=length($result);
5642: $result.=" ";
5643: my $encresult='';
5644: for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
5645: $encresult.= unpack("H16",
5646: $cipher->encrypt(substr($result,
5647: $encidx,
5648: 8)));
5649: }
5650: &Reply( $client, "enc:$cmdlength:$encresult\n", $userinput);
5651: } else {
5652: &Failure( $client, "error:no_key\n", $userinput);
5653: }
5654: } else {
5655: &Reply($client, "$outcome\n", $userinput);
5656: }
5657: } else {
5658: &Failure($client,"export_error\n",$userinput);
5659: }
5660: return 1;
5661: }
5662: ®ister_handler("autoexportgrades", \&auto_export_grades_handler,
5663: 0, 1, 0);
5664:
1.248 foxr 5665: # Retrieve and remove temporary files created by/during autoenrollment.
5666: #
5667: # Formal Parameters:
5668: # $cmd - The command that got us dispatched.
5669: # $tail - The tail of the command. In our case this is a colon
5670: # separated list that will be split into:
1.526 raeburn 5671: # $filename - The name of the file to retrieve.
1.248 foxr 5672: # The filename is given as a path relative to
5673: # the LonCAPA temp file directory.
5674: # $client - Socket open on the client.
5675: #
5676: # Returns:
5677: # 1 - Continue processing.
5678: sub retrieve_auto_file_handler {
5679: my ($cmd, $tail, $client) = @_;
5680: my $userinput = "cmd:$tail";
5681:
5682: my ($filename) = split(/:/, $tail);
5683:
5684: my $source = $perlvar{'lonDaemons'}.'/tmp/'.$filename;
1.521 raeburn 5685:
5686: if ($filename =~m{/\.\./}) {
5687: &Failure($client, "refused\n", $userinput);
1.526 raeburn 5688: } elsif ($filename !~ /^$LONCAPA::match_domain\_$LONCAPA::match_courseid\_.+_classlist\.xml$/) {
5689: &Failure($client, "refused\n", $userinput);
1.521 raeburn 5690: } elsif ( (-e $source) && ($filename ne '') ) {
1.248 foxr 5691: my $reply = '';
5692: if (open(my $fh,$source)) {
5693: while (<$fh>) {
5694: chomp($_);
5695: $_ =~ s/^\s+//g;
5696: $_ =~ s/\s+$//g;
5697: $reply .= $_;
5698: }
5699: close($fh);
5700: &Reply($client, &escape($reply)."\n", $userinput);
5701:
5702: # Does this have to be uncommented??!? (RF).
5703: #
5704: # unlink($source);
5705: } else {
5706: &Failure($client, "error\n", $userinput);
5707: }
5708: } else {
5709: &Failure($client, "error\n", $userinput);
5710: }
5711:
5712:
5713: return 1;
5714: }
5715: ®ister_handler("autoretrieve", \&retrieve_auto_file_handler, 0,1,0);
5716:
1.423 raeburn 5717: sub crsreq_checks_handler {
5718: my ($cmd, $tail, $client) = @_;
5719: my $userinput = "$cmd:$tail";
5720: my $dom = $tail;
5721: my $result;
1.519 raeburn 5722: my @reqtypes = ('official','unofficial','community','textbook','placement');
1.423 raeburn 5723: eval {
5724: local($SIG{__DIE__})='DEFAULT';
5725: my %validations;
1.424 raeburn 5726: my $response = &localenroll::crsreq_checks($dom,\@reqtypes,
5727: \%validations);
1.423 raeburn 5728: if ($response eq 'ok') {
5729: foreach my $key (keys(%validations)) {
5730: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
5731: }
5732: $result =~ s/\&$//;
5733: } else {
5734: $result = 'error';
5735: }
5736: };
5737: if (!$@) {
5738: &Reply($client, \$result, $userinput);
5739: } else {
5740: &Failure($client,"unknown_cmd\n",$userinput);
5741: }
5742: return 1;
5743: }
5744: ®ister_handler("autocrsreqchecks", \&crsreq_checks_handler, 0, 1, 0);
5745:
5746: sub validate_crsreq_handler {
5747: my ($cmd, $tail, $client) = @_;
5748: my $userinput = "$cmd:$tail";
1.508 raeburn 5749: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$customdata) = split(/:/, $tail);
1.423 raeburn 5750: $instcode = &unescape($instcode);
5751: $owner = &unescape($owner);
5752: $crstype = &unescape($crstype);
5753: $inststatuslist = &unescape($inststatuslist);
5754: $instcode = &unescape($instcode);
5755: $instseclist = &unescape($instseclist);
1.508 raeburn 5756: my $custominfo = &Apache::lonnet::thaw_unescape($customdata);
1.423 raeburn 5757: my $outcome;
5758: eval {
5759: local($SIG{__DIE__})='DEFAULT';
5760: $outcome = &localenroll::validate_crsreq($dom,$owner,$crstype,
5761: $inststatuslist,$instcode,
1.508 raeburn 5762: $instseclist,$custominfo);
1.423 raeburn 5763: };
5764: if (!$@) {
5765: &Reply($client, \$outcome, $userinput);
5766: } else {
5767: &Failure($client,"unknown_cmd\n",$userinput);
5768: }
5769: return 1;
5770: }
5771: ®ister_handler("autocrsreqvalidation", \&validate_crsreq_handler, 0, 1, 0);
5772:
1.506 raeburn 5773: sub crsreq_update_handler {
5774: my ($cmd, $tail, $client) = @_;
5775: my $userinput = "$cmd:$tail";
1.509 raeburn 5776: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,$code,
5777: $accessstart,$accessend,$infohashref) =
1.506 raeburn 5778: split(/:/, $tail);
5779: $crstype = &unescape($crstype);
5780: $action = &unescape($action);
5781: $ownername = &unescape($ownername);
5782: $ownerdomain = &unescape($ownerdomain);
5783: $fullname = &unescape($fullname);
5784: $title = &unescape($title);
5785: $code = &unescape($code);
1.509 raeburn 5786: $accessstart = &unescape($accessstart);
5787: $accessend = &unescape($accessend);
1.506 raeburn 5788: my $incoming = &Apache::lonnet::thaw_unescape($infohashref);
5789: my ($result,$outcome);
5790: eval {
5791: local($SIG{__DIE__})='DEFAULT';
5792: my %rtnhash;
5793: $outcome = &localenroll::crsreq_updates($cdom,$cnum,$crstype,$action,
5794: $ownername,$ownerdomain,$fullname,
1.509 raeburn 5795: $title,$code,$accessstart,$accessend,
5796: $incoming,\%rtnhash);
1.506 raeburn 5797: if ($outcome eq 'ok') {
1.515 raeburn 5798: my @posskeys = qw(createdweb createdmsg createdcustomized createdactions queuedweb queuedmsg formitems reviewweb validationjs onload javascript);
1.506 raeburn 5799: foreach my $key (keys(%rtnhash)) {
5800: if (grep(/^\Q$key\E/,@posskeys)) {
5801: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&';
5802: }
5803: }
5804: $result =~ s/\&$//;
5805: }
5806: };
5807: if (!$@) {
5808: if ($outcome eq 'ok') {
5809: &Reply($client, \$result, $userinput);
5810: } else {
5811: &Reply($client, "format_error\n", $userinput);
5812: }
5813: } else {
5814: &Failure($client,"unknown_cmd\n",$userinput);
5815: }
5816: return 1;
5817: }
5818: ®ister_handler("autocrsrequpdate", \&crsreq_update_handler, 0, 1, 0);
5819:
1.248 foxr 5820: #
5821: # Read and retrieve institutional code format (for support form).
5822: # Formal Parameters:
5823: # $cmd - Command that dispatched us.
5824: # $tail - Tail of the command. In this case it conatins
5825: # the course domain and the coursename.
5826: # $client - Socket open on the client.
5827: # Returns:
5828: # 1 - Continue processing.
5829: #
5830: sub get_institutional_code_format_handler {
5831: my ($cmd, $tail, $client) = @_;
5832: my $userinput = "$cmd:$tail";
5833:
5834: my $reply;
5835: my($cdom,$course) = split(/:/,$tail);
5836: my @pairs = split/\&/,$course;
5837: my %instcodes = ();
5838: my %codes = ();
5839: my @codetitles = ();
5840: my %cat_titles = ();
5841: my %cat_order = ();
5842: foreach (@pairs) {
5843: my ($key,$value) = split/=/,$_;
5844: $instcodes{&unescape($key)} = &unescape($value);
5845: }
5846: my $formatreply = &localenroll::instcode_format($cdom,
5847: \%instcodes,
5848: \%codes,
5849: \@codetitles,
5850: \%cat_titles,
5851: \%cat_order);
5852: if ($formatreply eq 'ok') {
1.365 albertel 5853: my $codes_str = &Apache::lonnet::hash2str(%codes);
5854: my $codetitles_str = &Apache::lonnet::array2str(@codetitles);
5855: my $cat_titles_str = &Apache::lonnet::hash2str(%cat_titles);
5856: my $cat_order_str = &Apache::lonnet::hash2str(%cat_order);
1.248 foxr 5857: &Reply($client,
5858: $codes_str.':'.$codetitles_str.':'.$cat_titles_str.':'
5859: .$cat_order_str."\n",
5860: $userinput);
5861: } else {
5862: # this else branch added by RF since if not ok, lonc will
5863: # hang waiting on reply until timeout.
5864: #
5865: &Reply($client, "format_error\n", $userinput);
5866: }
5867:
5868: return 1;
5869: }
1.265 albertel 5870: ®ister_handler("autoinstcodeformat",
5871: \&get_institutional_code_format_handler,0,1,0);
1.246 foxr 5872:
1.345 raeburn 5873: sub get_institutional_defaults_handler {
5874: my ($cmd, $tail, $client) = @_;
5875: my $userinput = "$cmd:$tail";
5876:
5877: my $dom = $tail;
5878: my %defaults_hash;
5879: my @code_order;
5880: my $outcome;
5881: eval {
5882: local($SIG{__DIE__})='DEFAULT';
5883: $outcome = &localenroll::instcode_defaults($dom,\%defaults_hash,
5884: \@code_order);
5885: };
5886: if (!$@) {
5887: if ($outcome eq 'ok') {
5888: my $result='';
5889: while (my ($key,$value) = each(%defaults_hash)) {
5890: $result.=&escape($key).'='.&escape($value).'&';
5891: }
5892: $result .= 'code_order='.&escape(join('&',@code_order));
1.387 albertel 5893: &Reply($client,\$result,$userinput);
1.345 raeburn 5894: } else {
5895: &Reply($client,"error\n", $userinput);
5896: }
5897: } else {
5898: &Failure($client,"unknown_cmd\n",$userinput);
5899: }
5900: }
5901: ®ister_handler("autoinstcodedefaults",
5902: \&get_institutional_defaults_handler,0,1,0);
5903:
1.416 raeburn 5904: sub get_possible_instcodes_handler {
5905: my ($cmd, $tail, $client) = @_;
5906: my $userinput = "$cmd:$tail";
5907:
5908: my $reply;
5909: my $cdom = $tail;
1.417 raeburn 5910: my (@codetitles,%cat_titles,%cat_order,@code_order);
1.416 raeburn 5911: my $formatreply = &localenroll::possible_instcodes($cdom,
5912: \@codetitles,
5913: \%cat_titles,
1.417 raeburn 5914: \%cat_order,
5915: \@code_order);
1.416 raeburn 5916: if ($formatreply eq 'ok') {
5917: my $result = join('&',map {&escape($_);} (@codetitles)).':';
1.417 raeburn 5918: $result .= join('&',map {&escape($_);} (@code_order)).':';
1.416 raeburn 5919: foreach my $key (keys(%cat_titles)) {
5920: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_titles{$key}).'&';
5921: }
5922: $result =~ s/\&$//;
5923: $result .= ':';
5924: foreach my $key (keys(%cat_order)) {
5925: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_order{$key}).'&';
5926: }
5927: $result =~ s/\&$//;
5928: &Reply($client,\$result,$userinput);
5929: } else {
5930: &Reply($client, "format_error\n", $userinput);
5931: }
5932: return 1;
5933: }
5934: ®ister_handler("autopossibleinstcodes",
5935: \&get_possible_instcodes_handler,0,1,0);
5936:
1.381 raeburn 5937: sub get_institutional_user_rules {
5938: my ($cmd, $tail, $client) = @_;
5939: my $userinput = "$cmd:$tail";
5940: my $dom = &unescape($tail);
5941: my (%rules_hash,@rules_order);
5942: my $outcome;
5943: eval {
5944: local($SIG{__DIE__})='DEFAULT';
5945: $outcome = &localenroll::username_rules($dom,\%rules_hash,\@rules_order);
5946: };
5947: if (!$@) {
5948: if ($outcome eq 'ok') {
5949: my $result;
5950: foreach my $key (keys(%rules_hash)) {
5951: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
5952: }
5953: $result =~ s/\&$//;
5954: $result .= ':';
5955: if (@rules_order > 0) {
5956: foreach my $item (@rules_order) {
5957: $result .= &escape($item).'&';
5958: }
5959: }
5960: $result =~ s/\&$//;
1.387 albertel 5961: &Reply($client,\$result,$userinput);
1.381 raeburn 5962: } else {
5963: &Reply($client,"error\n", $userinput);
5964: }
5965: } else {
5966: &Failure($client,"unknown_cmd\n",$userinput);
5967: }
5968: }
5969: ®ister_handler("instuserrules",\&get_institutional_user_rules,0,1,0);
5970:
1.389 raeburn 5971: sub get_institutional_id_rules {
5972: my ($cmd, $tail, $client) = @_;
5973: my $userinput = "$cmd:$tail";
5974: my $dom = &unescape($tail);
5975: my (%rules_hash,@rules_order);
5976: my $outcome;
5977: eval {
5978: local($SIG{__DIE__})='DEFAULT';
5979: $outcome = &localenroll::id_rules($dom,\%rules_hash,\@rules_order);
5980: };
5981: if (!$@) {
5982: if ($outcome eq 'ok') {
5983: my $result;
5984: foreach my $key (keys(%rules_hash)) {
5985: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
5986: }
5987: $result =~ s/\&$//;
5988: $result .= ':';
5989: if (@rules_order > 0) {
5990: foreach my $item (@rules_order) {
5991: $result .= &escape($item).'&';
5992: }
5993: }
5994: $result =~ s/\&$//;
5995: &Reply($client,\$result,$userinput);
5996: } else {
5997: &Reply($client,"error\n", $userinput);
5998: }
5999: } else {
6000: &Failure($client,"unknown_cmd\n",$userinput);
6001: }
6002: }
6003: ®ister_handler("instidrules",\&get_institutional_id_rules,0,1,0);
6004:
1.397 raeburn 6005: sub get_institutional_selfcreate_rules {
1.396 raeburn 6006: my ($cmd, $tail, $client) = @_;
6007: my $userinput = "$cmd:$tail";
6008: my $dom = &unescape($tail);
6009: my (%rules_hash,@rules_order);
6010: my $outcome;
6011: eval {
6012: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 6013: $outcome = &localenroll::selfcreate_rules($dom,\%rules_hash,\@rules_order);
1.396 raeburn 6014: };
6015: if (!$@) {
6016: if ($outcome eq 'ok') {
6017: my $result;
6018: foreach my $key (keys(%rules_hash)) {
6019: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6020: }
6021: $result =~ s/\&$//;
6022: $result .= ':';
6023: if (@rules_order > 0) {
6024: foreach my $item (@rules_order) {
6025: $result .= &escape($item).'&';
6026: }
6027: }
6028: $result =~ s/\&$//;
6029: &Reply($client,\$result,$userinput);
6030: } else {
6031: &Reply($client,"error\n", $userinput);
6032: }
6033: } else {
6034: &Failure($client,"unknown_cmd\n",$userinput);
6035: }
6036: }
1.397 raeburn 6037: ®ister_handler("instemailrules",\&get_institutional_selfcreate_rules,0,1,0);
1.396 raeburn 6038:
1.381 raeburn 6039:
6040: sub institutional_username_check {
6041: my ($cmd, $tail, $client) = @_;
6042: my $userinput = "$cmd:$tail";
6043: my %rulecheck;
6044: my $outcome;
6045: my ($udom,$uname,@rules) = split(/:/,$tail);
6046: $udom = &unescape($udom);
6047: $uname = &unescape($uname);
6048: @rules = map {&unescape($_);} (@rules);
6049: eval {
6050: local($SIG{__DIE__})='DEFAULT';
6051: $outcome = &localenroll::username_check($udom,$uname,\@rules,\%rulecheck);
6052: };
6053: if (!$@) {
6054: if ($outcome eq 'ok') {
6055: my $result='';
6056: foreach my $key (keys(%rulecheck)) {
6057: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6058: }
1.387 albertel 6059: &Reply($client,\$result,$userinput);
1.381 raeburn 6060: } else {
6061: &Reply($client,"error\n", $userinput);
6062: }
6063: } else {
6064: &Failure($client,"unknown_cmd\n",$userinput);
6065: }
6066: }
6067: ®ister_handler("instrulecheck",\&institutional_username_check,0,1,0);
6068:
1.389 raeburn 6069: sub institutional_id_check {
6070: my ($cmd, $tail, $client) = @_;
6071: my $userinput = "$cmd:$tail";
6072: my %rulecheck;
6073: my $outcome;
6074: my ($udom,$id,@rules) = split(/:/,$tail);
6075: $udom = &unescape($udom);
6076: $id = &unescape($id);
6077: @rules = map {&unescape($_);} (@rules);
6078: eval {
6079: local($SIG{__DIE__})='DEFAULT';
6080: $outcome = &localenroll::id_check($udom,$id,\@rules,\%rulecheck);
6081: };
6082: if (!$@) {
6083: if ($outcome eq 'ok') {
6084: my $result='';
6085: foreach my $key (keys(%rulecheck)) {
6086: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6087: }
6088: &Reply($client,\$result,$userinput);
6089: } else {
6090: &Reply($client,"error\n", $userinput);
6091: }
6092: } else {
6093: &Failure($client,"unknown_cmd\n",$userinput);
6094: }
6095: }
6096: ®ister_handler("instidrulecheck",\&institutional_id_check,0,1,0);
1.345 raeburn 6097:
1.397 raeburn 6098: sub institutional_selfcreate_check {
1.396 raeburn 6099: my ($cmd, $tail, $client) = @_;
6100: my $userinput = "$cmd:$tail";
6101: my %rulecheck;
6102: my $outcome;
6103: my ($udom,$email,@rules) = split(/:/,$tail);
6104: $udom = &unescape($udom);
6105: $email = &unescape($email);
6106: @rules = map {&unescape($_);} (@rules);
6107: eval {
6108: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 6109: $outcome = &localenroll::selfcreate_check($udom,$email,\@rules,\%rulecheck);
1.396 raeburn 6110: };
6111: if (!$@) {
6112: if ($outcome eq 'ok') {
6113: my $result='';
6114: foreach my $key (keys(%rulecheck)) {
6115: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6116: }
6117: &Reply($client,\$result,$userinput);
6118: } else {
6119: &Reply($client,"error\n", $userinput);
6120: }
6121: } else {
6122: &Failure($client,"unknown_cmd\n",$userinput);
6123: }
6124: }
1.397 raeburn 6125: ®ister_handler("instselfcreatecheck",\&institutional_selfcreate_check,0,1,0);
1.396 raeburn 6126:
1.317 raeburn 6127: # Get domain specific conditions for import of student photographs to a course
6128: #
6129: # Retrieves information from photo_permission subroutine in localenroll.
6130: # Returns outcome (ok) if no processing errors, and whether course owner is
6131: # required to accept conditions of use (yes/no).
6132: #
6133: #
6134: sub photo_permission_handler {
6135: my ($cmd, $tail, $client) = @_;
6136: my $userinput = "$cmd:$tail";
6137: my $cdom = $tail;
6138: my ($perm_reqd,$conditions);
1.320 albertel 6139: my $outcome;
6140: eval {
6141: local($SIG{__DIE__})='DEFAULT';
6142: $outcome = &localenroll::photo_permission($cdom,\$perm_reqd,
6143: \$conditions);
6144: };
6145: if (!$@) {
6146: &Reply($client, &escape($outcome.':'.$perm_reqd.':'. $conditions)."\n",
6147: $userinput);
6148: } else {
6149: &Failure($client,"unknown_cmd\n",$userinput);
6150: }
6151: return 1;
1.317 raeburn 6152: }
6153: ®ister_handler("autophotopermission",\&photo_permission_handler,0,1,0);
6154:
6155: #
6156: # Checks if student photo is available for a user in the domain, in the user's
6157: # directory (in /userfiles/internal/studentphoto.jpg).
6158: # Uses localstudentphoto:fetch() to ensure there is an up to date copy of
6159: # the student's photo.
6160:
6161: sub photo_check_handler {
6162: my ($cmd, $tail, $client) = @_;
6163: my $userinput = "$cmd:$tail";
6164: my ($udom,$uname,$pid) = split(/:/,$tail);
6165: $udom = &unescape($udom);
6166: $uname = &unescape($uname);
6167: $pid = &unescape($pid);
6168: my $path=&propath($udom,$uname).'/userfiles/internal/';
6169: if (!-e $path) {
6170: &mkpath($path);
6171: }
6172: my $response;
6173: my $result = &localstudentphoto::fetch($udom,$uname,$pid,\$response);
6174: $result .= ':'.$response;
6175: &Reply($client, &escape($result)."\n",$userinput);
1.320 albertel 6176: return 1;
1.317 raeburn 6177: }
6178: ®ister_handler("autophotocheck",\&photo_check_handler,0,1,0);
6179:
6180: #
6181: # Retrieve information from localenroll about whether to provide a button
6182: # for users who have enbled import of student photos to initiate an
6183: # update of photo files for registered students. Also include
6184: # comment to display alongside button.
6185:
6186: sub photo_choice_handler {
6187: my ($cmd, $tail, $client) = @_;
6188: my $userinput = "$cmd:$tail";
6189: my $cdom = &unescape($tail);
1.320 albertel 6190: my ($update,$comment);
6191: eval {
6192: local($SIG{__DIE__})='DEFAULT';
6193: ($update,$comment) = &localenroll::manager_photo_update($cdom);
6194: };
6195: if (!$@) {
6196: &Reply($client,&escape($update).':'.&escape($comment)."\n",$userinput);
6197: } else {
6198: &Failure($client,"unknown_cmd\n",$userinput);
6199: }
6200: return 1;
1.317 raeburn 6201: }
6202: ®ister_handler("autophotochoice",\&photo_choice_handler,0,1,0);
6203:
1.265 albertel 6204: #
6205: # Gets a student's photo to exist (in the correct image type) in the user's
6206: # directory.
6207: # Formal Parameters:
6208: # $cmd - The command request that got us dispatched.
6209: # $tail - A colon separated set of words that will be split into:
6210: # $domain - student's domain
6211: # $uname - student username
6212: # $type - image type desired
6213: # $client - The socket open on the client.
6214: # Returns:
6215: # 1 - continue processing.
1.317 raeburn 6216:
1.265 albertel 6217: sub student_photo_handler {
6218: my ($cmd, $tail, $client) = @_;
1.317 raeburn 6219: my ($domain,$uname,$ext,$type) = split(/:/, $tail);
1.265 albertel 6220:
1.317 raeburn 6221: my $path=&propath($domain,$uname). '/userfiles/internal/';
6222: my $filename = 'studentphoto.'.$ext;
6223: if ($type eq 'thumbnail') {
6224: $filename = 'studentphoto_tn.'.$ext;
6225: }
6226: if (-e $path.$filename) {
1.265 albertel 6227: &Reply($client,"ok\n","$cmd:$tail");
6228: return 1;
6229: }
6230: &mkpath($path);
1.317 raeburn 6231: my $file;
6232: if ($type eq 'thumbnail') {
1.320 albertel 6233: eval {
6234: local($SIG{__DIE__})='DEFAULT';
6235: $file=&localstudentphoto::fetch_thumbnail($domain,$uname);
6236: };
1.317 raeburn 6237: } else {
6238: $file=&localstudentphoto::fetch($domain,$uname);
6239: }
1.265 albertel 6240: if (!$file) {
6241: &Failure($client,"unavailable\n","$cmd:$tail");
6242: return 1;
6243: }
1.317 raeburn 6244: if (!-e $path.$filename) { &convert_photo($file,$path.$filename); }
6245: if (-e $path.$filename) {
1.265 albertel 6246: &Reply($client,"ok\n","$cmd:$tail");
6247: return 1;
6248: }
6249: &Failure($client,"unable_to_convert\n","$cmd:$tail");
6250: return 1;
6251: }
6252: ®ister_handler("studentphoto", \&student_photo_handler, 0, 1, 0);
1.246 foxr 6253:
1.361 raeburn 6254: sub inst_usertypes_handler {
6255: my ($cmd, $domain, $client) = @_;
6256: my $res;
6257: my $userinput = $cmd.":".$domain; # For logging purposes.
1.370 albertel 6258: my (%typeshash,@order,$result);
6259: eval {
6260: local($SIG{__DIE__})='DEFAULT';
6261: $result=&localenroll::inst_usertypes($domain,\%typeshash,\@order);
6262: };
6263: if ($result eq 'ok') {
1.361 raeburn 6264: if (keys(%typeshash) > 0) {
6265: foreach my $key (keys(%typeshash)) {
6266: $res.=&escape($key).'='.&escape($typeshash{$key}).'&';
6267: }
6268: }
6269: $res=~s/\&$//;
6270: $res .= ':';
6271: if (@order > 0) {
6272: foreach my $item (@order) {
6273: $res .= &escape($item).'&';
6274: }
6275: }
6276: $res=~s/\&$//;
6277: }
1.387 albertel 6278: &Reply($client, \$res, $userinput);
1.361 raeburn 6279: return 1;
6280: }
6281: ®ister_handler("inst_usertypes", \&inst_usertypes_handler, 0, 1, 0);
6282:
1.264 albertel 6283: # mkpath makes all directories for a file, expects an absolute path with a
6284: # file or a trailing / if just a dir is passed
6285: # returns 1 on success 0 on failure
6286: sub mkpath {
6287: my ($file)=@_;
6288: my @parts=split(/\//,$file,-1);
6289: my $now=$parts[0].'/'.$parts[1].'/'.$parts[2];
6290: for (my $i=3;$i<= ($#parts-1);$i++) {
1.265 albertel 6291: $now.='/'.$parts[$i];
1.264 albertel 6292: if (!-e $now) {
6293: if (!mkdir($now,0770)) { return 0; }
6294: }
6295: }
6296: return 1;
6297: }
6298:
1.207 foxr 6299: #---------------------------------------------------------------
6300: #
6301: # Getting, decoding and dispatching requests:
6302: #
6303: #
6304: # Get a Request:
6305: # Gets a Request message from the client. The transaction
6306: # is defined as a 'line' of text. We remove the new line
6307: # from the text line.
1.226 foxr 6308: #
1.211 albertel 6309: sub get_request {
1.207 foxr 6310: my $input = <$client>;
6311: chomp($input);
1.226 foxr 6312:
1.234 foxr 6313: &Debug("get_request: Request = $input\n");
1.207 foxr 6314:
6315: &status('Processing '.$clientname.':'.$input);
6316:
6317: return $input;
6318: }
1.212 foxr 6319: #---------------------------------------------------------------
6320: #
6321: # Process a request. This sub should shrink as each action
6322: # gets farmed out into a separat sub that is registered
6323: # with the dispatch hash.
6324: #
6325: # Parameters:
6326: # user_input - The request received from the client (lonc).
1.525 raeburn 6327: #
1.212 foxr 6328: # Returns:
6329: # true to keep processing, false if caller should exit.
6330: #
6331: sub process_request {
1.525 raeburn 6332: my ($userinput) = @_; # Easier for now to break style than to
6333: # fix all the userinput -> user_input.
1.212 foxr 6334: my $wasenc = 0; # True if request was encrypted.
6335: # ------------------------------------------------------------ See if encrypted
1.322 albertel 6336: # for command
6337: # sethost:<server>
6338: # <command>:<args>
6339: # we just send it to the processor
6340: # for
6341: # sethost:<server>:<command>:<args>
6342: # we do the implict set host and then do the command
6343: if ($userinput =~ /^sethost:/) {
6344: (my $cmd,my $newid,$userinput) = split(':',$userinput,3);
6345: if (defined($userinput)) {
6346: &sethost("$cmd:$newid");
6347: } else {
6348: $userinput = "$cmd:$newid";
6349: }
6350: }
6351:
1.212 foxr 6352: if ($userinput =~ /^enc/) {
6353: $userinput = decipher($userinput);
6354: $wasenc=1;
6355: if(!$userinput) { # Cipher not defined.
1.251 foxr 6356: &Failure($client, "error: Encrypted data without negotated key\n");
1.212 foxr 6357: return 0;
6358: }
6359: }
6360: Debug("process_request: $userinput\n");
6361:
1.213 foxr 6362: #
6363: # The 'correct way' to add a command to lond is now to
6364: # write a sub to execute it and Add it to the command dispatch
6365: # hash via a call to register_handler.. The comments to that
6366: # sub should give you enough to go on to show how to do this
6367: # along with the examples that are building up as this code
6368: # is getting refactored. Until all branches of the
6369: # if/elseif monster below have been factored out into
6370: # separate procesor subs, if the dispatch hash is missing
6371: # the command keyword, we will fall through to the remainder
6372: # of the if/else chain below in order to keep this thing in
6373: # working order throughout the transmogrification.
6374:
6375: my ($command, $tail) = split(/:/, $userinput, 2);
6376: chomp($command);
6377: chomp($tail);
6378: $tail =~ s/(\r)//; # This helps people debugging with e.g. telnet.
1.214 foxr 6379: $command =~ s/(\r)//; # And this too for parameterless commands.
6380: if(!$tail) {
6381: $tail =""; # defined but blank.
6382: }
1.213 foxr 6383:
6384: &Debug("Command received: $command, encoded = $wasenc");
6385:
6386: if(defined $Dispatcher{$command}) {
6387:
6388: my $dispatch_info = $Dispatcher{$command};
6389: my $handler = $$dispatch_info[0];
6390: my $need_encode = $$dispatch_info[1];
6391: my $client_types = $$dispatch_info[2];
6392: Debug("Matched dispatch hash: mustencode: $need_encode "
6393: ."ClientType $client_types");
6394:
6395: # Validate the request:
6396:
6397: my $ok = 1;
6398: my $requesterprivs = 0;
6399: if(&isClient()) {
6400: $requesterprivs |= $CLIENT_OK;
6401: }
6402: if(&isManager()) {
6403: $requesterprivs |= $MANAGER_OK;
6404: }
6405: if($need_encode && (!$wasenc)) {
6406: Debug("Must encode but wasn't: $need_encode $wasenc");
6407: $ok = 0;
6408: }
6409: if(($client_types & $requesterprivs) == 0) {
6410: Debug("Client not privileged to do this operation");
6411: $ok = 0;
6412: }
1.525 raeburn 6413: if ($ok) {
6414: if (ref($trust{$command}) eq 'HASH') {
6415: my $donechecks;
6416: if ($trust{$command}{'anywhere'}) {
6417: $donechecks = 1;
6418: } elsif ($trust{$command}{'manageronly'}) {
6419: unless (&isManager()) {
6420: $ok = 0;
6421: }
6422: $donechecks = 1;
6423: } elsif ($trust{$command}{'institutiononly'}) {
6424: unless ($clientsameinst) {
6425: $ok = 0;
6426: }
6427: $donechecks = 1;
6428: } elsif ($clientsameinst) {
6429: $donechecks = 1;
6430: }
6431: unless ($donechecks) {
6432: foreach my $rule (keys(%{$trust{$command}})) {
6433: next if ($rule eq 'remote');
6434: if ($trust{$command}{$rule}) {
6435: if ($clientprohibited{$rule}) {
6436: $ok = 0;
6437: } else {
6438: $ok = 1;
6439: $donechecks = 1;
6440: last;
6441: }
6442: }
6443: }
6444: }
6445: unless ($donechecks) {
6446: if ($trust{$command}{'remote'}) {
6447: if ($clientremoteok) {
6448: $ok = 1;
6449: } else {
6450: $ok = 0;
6451: }
6452: }
6453: }
6454: }
6455: }
1.213 foxr 6456:
6457: if($ok) {
6458: Debug("Dispatching to handler $command $tail");
6459: my $keep_going = &$handler($command, $tail, $client);
6460: return $keep_going;
6461: } else {
6462: Debug("Refusing to dispatch because client did not match requirements");
6463: Failure($client, "refused\n", $userinput);
6464: return 1;
6465: }
1.525 raeburn 6466: }
1.213 foxr 6467:
1.262 foxr 6468: print $client "unknown_cmd\n";
1.212 foxr 6469: # -------------------------------------------------------------------- complete
6470: Debug("process_request - returning 1");
6471: return 1;
6472: }
1.207 foxr 6473: #
6474: # Decipher encoded traffic
6475: # Parameters:
6476: # input - Encoded data.
6477: # Returns:
6478: # Decoded data or undef if encryption key was not yet negotiated.
6479: # Implicit input:
6480: # cipher - This global holds the negotiated encryption key.
6481: #
1.211 albertel 6482: sub decipher {
1.207 foxr 6483: my ($input) = @_;
6484: my $output = '';
1.212 foxr 6485:
6486:
1.207 foxr 6487: if($cipher) {
6488: my($enc, $enclength, $encinput) = split(/:/, $input);
6489: for(my $encidx = 0; $encidx < length($encinput); $encidx += 16) {
6490: $output .=
6491: $cipher->decrypt(pack("H16", substr($encinput, $encidx, 16)));
6492: }
6493: return substr($output, 0, $enclength);
6494: } else {
6495: return undef;
6496: }
6497: }
6498:
6499: #
6500: # Register a command processor. This function is invoked to register a sub
6501: # to process a request. Once registered, the ProcessRequest sub can automatically
6502: # dispatch requests to an appropriate sub, and do the top level validity checking
6503: # as well:
6504: # - Is the keyword recognized.
6505: # - Is the proper client type attempting the request.
6506: # - Is the request encrypted if it has to be.
6507: # Parameters:
6508: # $request_name - Name of the request being registered.
6509: # This is the command request that will match
6510: # against the hash keywords to lookup the information
6511: # associated with the dispatch information.
6512: # $procedure - Reference to a sub to call to process the request.
6513: # All subs get called as follows:
6514: # Procedure($cmd, $tail, $replyfd, $key)
6515: # $cmd - the actual keyword that invoked us.
6516: # $tail - the tail of the request that invoked us.
6517: # $replyfd- File descriptor connected to the client
6518: # $must_encode - True if the request must be encoded to be good.
6519: # $client_ok - True if it's ok for a client to request this.
6520: # $manager_ok - True if it's ok for a manager to request this.
6521: # Side effects:
6522: # - On success, the Dispatcher hash has an entry added for the key $RequestName
6523: # - On failure, the program will die as it's a bad internal bug to try to
6524: # register a duplicate command handler.
6525: #
1.211 albertel 6526: sub register_handler {
1.212 foxr 6527: my ($request_name,$procedure,$must_encode, $client_ok,$manager_ok) = @_;
1.207 foxr 6528:
6529: # Don't allow duplication#
6530:
6531: if (defined $Dispatcher{$request_name}) {
6532: die "Attempting to define a duplicate request handler for $request_name\n";
6533: }
6534: # Build the client type mask:
6535:
6536: my $client_type_mask = 0;
6537: if($client_ok) {
6538: $client_type_mask |= $CLIENT_OK;
6539: }
6540: if($manager_ok) {
6541: $client_type_mask |= $MANAGER_OK;
6542: }
6543:
6544: # Enter the hash:
6545:
6546: my @entry = ($procedure, $must_encode, $client_type_mask);
6547:
6548: $Dispatcher{$request_name} = \@entry;
6549:
6550: }
6551:
6552:
6553: #------------------------------------------------------------------
6554:
6555:
6556:
6557:
1.141 foxr 6558: #
1.96 foxr 6559: # Convert an error return code from lcpasswd to a string value.
6560: #
6561: sub lcpasswdstrerror {
6562: my $ErrorCode = shift;
1.97 foxr 6563: if(($ErrorCode < 0) || ($ErrorCode > $lastpwderror)) {
1.96 foxr 6564: return "lcpasswd Unrecognized error return value ".$ErrorCode;
6565: } else {
1.98 foxr 6566: return $passwderrors[$ErrorCode];
1.96 foxr 6567: }
6568: }
6569:
1.23 harris41 6570: # grabs exception and records it to log before exiting
6571: sub catchexception {
1.27 albertel 6572: my ($error)=@_;
1.25 www 6573: $SIG{'QUIT'}='DEFAULT';
6574: $SIG{__DIE__}='DEFAULT';
1.165 albertel 6575: &status("Catching exception");
1.190 albertel 6576: &logthis("<font color='red'>CRITICAL: "
1.373 albertel 6577: ."ABNORMAL EXIT. Child $$ for server ".$perlvar{'lonHostID'}." died through "
1.27 albertel 6578: ."a crash with this error msg->[$error]</font>");
1.57 www 6579: &logthis('Famous last words: '.$status.' - '.$lastlog);
1.27 albertel 6580: if ($client) { print $client "error: $error\n"; }
1.59 www 6581: $server->close();
1.27 albertel 6582: die($error);
1.23 harris41 6583: }
1.63 www 6584: sub timeout {
1.165 albertel 6585: &status("Handling Timeout");
1.190 albertel 6586: &logthis("<font color='red'>CRITICAL: TIME OUT ".$$."</font>");
1.63 www 6587: &catchexception('Timeout');
6588: }
1.22 harris41 6589: # -------------------------------- Set signal handlers to record abnormal exits
6590:
1.226 foxr 6591:
1.22 harris41 6592: $SIG{'QUIT'}=\&catchexception;
6593: $SIG{__DIE__}=\&catchexception;
6594:
1.81 matthew 6595: # ---------------------------------- Read loncapa_apache.conf and loncapa.conf
1.95 harris41 6596: &status("Read loncapa.conf and loncapa_apache.conf");
6597: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
1.141 foxr 6598: %perlvar=%{$perlvarref};
1.80 harris41 6599: undef $perlvarref;
1.19 www 6600:
1.35 harris41 6601: # ----------------------------- Make sure this process is running from user=www
6602: my $wwwid=getpwnam('www');
6603: if ($wwwid!=$<) {
1.134 albertel 6604: my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
6605: my $subj="LON: $currenthostid User ID mismatch";
1.37 harris41 6606: system("echo 'User ID mismatch. lond must be run as user www.' |\
1.35 harris41 6607: mailto $emailto -s '$subj' > /dev/null");
6608: exit 1;
6609: }
6610:
1.19 www 6611: # --------------------------------------------- Check if other instance running
6612:
6613: my $pidfile="$perlvar{'lonDaemons'}/logs/lond.pid";
6614:
6615: if (-e $pidfile) {
6616: my $lfh=IO::File->new("$pidfile");
6617: my $pide=<$lfh>;
6618: chomp($pide);
1.29 harris41 6619: if (kill 0 => $pide) { die "already running"; }
1.19 www 6620: }
1.1 albertel 6621:
6622: # ------------------------------------------------------------- Read hosts file
6623:
6624:
6625:
6626: # establish SERVER socket, bind and listen.
6627: $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},
6628: Type => SOCK_STREAM,
6629: Proto => 'tcp',
1.469 foxr 6630: ReuseAddr => 1,
1.1 albertel 6631: Listen => 10 )
1.29 harris41 6632: or die "making socket: $@\n";
1.1 albertel 6633:
6634: # --------------------------------------------------------- Do global variables
6635:
6636: # global variables
6637:
1.134 albertel 6638: my %children = (); # keys are current child process IDs
1.1 albertel 6639:
6640: sub REAPER { # takes care of dead children
6641: $SIG{CHLD} = \&REAPER;
1.165 albertel 6642: &status("Handling child death");
1.178 foxr 6643: my $pid;
6644: do {
6645: $pid = waitpid(-1,&WNOHANG());
6646: if (defined($children{$pid})) {
6647: &logthis("Child $pid died");
6648: delete($children{$pid});
1.183 albertel 6649: } elsif ($pid > 0) {
1.178 foxr 6650: &logthis("Unknown Child $pid died");
6651: }
6652: } while ( $pid > 0 );
6653: foreach my $child (keys(%children)) {
6654: $pid = waitpid($child,&WNOHANG());
6655: if ($pid > 0) {
6656: &logthis("Child $child - $pid looks like we missed it's death");
6657: delete($children{$pid});
6658: }
1.176 albertel 6659: }
1.165 albertel 6660: &status("Finished Handling child death");
1.1 albertel 6661: }
6662:
6663: sub HUNTSMAN { # signal handler for SIGINT
1.165 albertel 6664: &status("Killing children (INT)");
1.1 albertel 6665: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
6666: kill 'INT' => keys %children;
1.59 www 6667: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.1 albertel 6668: my $execdir=$perlvar{'lonDaemons'};
6669: unlink("$execdir/logs/lond.pid");
1.190 albertel 6670: &logthis("<font color='red'>CRITICAL: Shutting down</font>");
1.165 albertel 6671: &status("Done killing children");
1.1 albertel 6672: exit; # clean up with dignity
6673: }
6674:
6675: sub HUPSMAN { # signal handler for SIGHUP
6676: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
1.165 albertel 6677: &status("Killing children for restart (HUP)");
1.1 albertel 6678: kill 'INT' => keys %children;
1.59 www 6679: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.190 albertel 6680: &logthis("<font color='red'>CRITICAL: Restarting</font>");
1.134 albertel 6681: my $execdir=$perlvar{'lonDaemons'};
1.30 harris41 6682: unlink("$execdir/logs/lond.pid");
1.165 albertel 6683: &status("Restarting self (HUP)");
1.1 albertel 6684: exec("$execdir/lond"); # here we go again
6685: }
6686:
1.144 foxr 6687: #
1.148 foxr 6688: # Reload the Apache daemon's state.
1.150 foxr 6689: # This is done by invoking /home/httpd/perl/apachereload
6690: # a setuid perl script that can be root for us to do this job.
1.148 foxr 6691: #
6692: sub ReloadApache {
1.473 raeburn 6693: # --------------------------- Handle case of another apachereload process (locking)
1.474 raeburn 6694: if (&LONCAPA::try_to_lock('/tmp/lock_apachereload')) {
6695: my $execdir = $perlvar{'lonDaemons'};
6696: my $script = $execdir."/apachereload";
6697: system($script);
6698: unlink('/tmp/lock_apachereload'); # Remove the lock file.
6699: }
1.148 foxr 6700: }
6701:
6702: #
1.144 foxr 6703: # Called in response to a USR2 signal.
6704: # - Reread hosts.tab
6705: # - All children connected to hosts that were removed from hosts.tab
6706: # are killed via SIGINT
6707: # - All children connected to previously existing hosts are sent SIGUSR1
6708: # - Our internal hosts hash is updated to reflect the new contents of
6709: # hosts.tab causing connections from hosts added to hosts.tab to
6710: # now be honored.
6711: #
6712: sub UpdateHosts {
1.165 albertel 6713: &status("Reload hosts.tab");
1.147 foxr 6714: logthis('<font color="blue"> Updating connections </font>');
1.148 foxr 6715: #
6716: # The %children hash has the set of IP's we currently have children
6717: # on. These need to be matched against records in the hosts.tab
6718: # Any ip's no longer in the table get killed off they correspond to
6719: # either dropped or changed hosts. Note that the re-read of the table
6720: # will take care of new and changed hosts as connections come into being.
6721:
1.371 albertel 6722: &Apache::lonnet::reset_hosts_info();
1.148 foxr 6723:
1.368 albertel 6724: foreach my $child (keys(%children)) {
1.148 foxr 6725: my $childip = $children{$child};
1.374 albertel 6726: if ($childip ne '127.0.0.1'
6727: && !defined(&Apache::lonnet::get_hosts_from_ip($childip))) {
1.149 foxr 6728: logthis('<font color="blue"> UpdateHosts killing child '
6729: ." $child for ip $childip </font>");
1.148 foxr 6730: kill('INT', $child);
1.149 foxr 6731: } else {
6732: logthis('<font color="green"> keeping child for ip '
6733: ." $childip (pid=$child) </font>");
1.148 foxr 6734: }
6735: }
6736: ReloadApache;
1.165 albertel 6737: &status("Finished reloading hosts.tab");
1.144 foxr 6738: }
6739:
1.148 foxr 6740:
1.57 www 6741: sub checkchildren {
1.165 albertel 6742: &status("Checking on the children (sending signals)");
1.57 www 6743: &initnewstatus();
6744: &logstatus();
6745: &logthis('Going to check on the children');
1.134 albertel 6746: my $docdir=$perlvar{'lonDocRoot'};
1.61 harris41 6747: foreach (sort keys %children) {
1.221 albertel 6748: #sleep 1;
1.57 www 6749: unless (kill 'USR1' => $_) {
6750: &logthis ('Child '.$_.' is dead');
6751: &logstatus($$.' is dead');
1.221 albertel 6752: delete($children{$_});
1.57 www 6753: }
1.61 harris41 6754: }
1.63 www 6755: sleep 5;
1.212 foxr 6756: $SIG{ALRM} = sub { Debug("timeout");
6757: die "timeout"; };
1.113 albertel 6758: $SIG{__DIE__} = 'DEFAULT';
1.165 albertel 6759: &status("Checking on the children (waiting for reports)");
1.63 www 6760: foreach (sort keys %children) {
6761: unless (-e "$docdir/lon-status/londchld/$_.txt") {
1.113 albertel 6762: eval {
6763: alarm(300);
1.63 www 6764: &logthis('Child '.$_.' did not respond');
1.67 albertel 6765: kill 9 => $_;
1.131 albertel 6766: #$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
6767: #$subj="LON: $currenthostid killed lond process $_";
6768: #my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null`;
6769: #$execdir=$perlvar{'lonDaemons'};
6770: #$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_`;
1.221 albertel 6771: delete($children{$_});
1.113 albertel 6772: alarm(0);
6773: }
1.63 www 6774: }
6775: }
1.113 albertel 6776: $SIG{ALRM} = 'DEFAULT';
1.155 albertel 6777: $SIG{__DIE__} = \&catchexception;
1.165 albertel 6778: &status("Finished checking children");
1.221 albertel 6779: &logthis('Finished Checking children');
1.57 www 6780: }
6781:
1.1 albertel 6782: # --------------------------------------------------------------------- Logging
6783:
6784: sub logthis {
6785: my $message=shift;
6786: my $execdir=$perlvar{'lonDaemons'};
6787: my $fh=IO::File->new(">>$execdir/logs/lond.log");
6788: my $now=time;
6789: my $local=localtime($now);
1.58 www 6790: $lastlog=$local.': '.$message;
1.1 albertel 6791: print $fh "$local ($$): $message\n";
6792: }
6793:
1.77 foxr 6794: # ------------------------- Conditional log if $DEBUG true.
6795: sub Debug {
6796: my $message = shift;
6797: if($DEBUG) {
6798: &logthis($message);
6799: }
6800: }
1.161 foxr 6801:
6802: #
6803: # Sub to do replies to client.. this gives a hook for some
6804: # debug tracing too:
6805: # Parameters:
6806: # fd - File open on client.
6807: # reply - Text to send to client.
6808: # request - Original request from client.
6809: #
1.490 droeschl 6810: #NOTE $reply must be terminated by exactly *one* \n. If $reply is a reference
6811: #this is done automatically ($$reply must not contain any \n in this case).
6812: #If $reply is a string the caller has to ensure this.
1.161 foxr 6813: sub Reply {
1.192 foxr 6814: my ($fd, $reply, $request) = @_;
1.387 albertel 6815: if (ref($reply)) {
6816: print $fd $$reply;
6817: print $fd "\n";
6818: if ($DEBUG) { Debug("Request was $request Reply was $$reply"); }
6819: } else {
6820: print $fd $reply;
6821: if ($DEBUG) { Debug("Request was $request Reply was $reply"); }
6822: }
1.212 foxr 6823: $Transactions++;
6824: }
6825:
6826:
6827: #
6828: # Sub to report a failure.
6829: # This function:
6830: # - Increments the failure statistic counters.
6831: # - Invokes Reply to send the error message to the client.
6832: # Parameters:
6833: # fd - File descriptor open on the client
6834: # reply - Reply text to emit.
6835: # request - The original request message (used by Reply
6836: # to debug if that's enabled.
6837: # Implicit outputs:
6838: # $Failures- The number of failures is incremented.
6839: # Reply (invoked here) sends a message to the
6840: # client:
6841: #
6842: sub Failure {
6843: my $fd = shift;
6844: my $reply = shift;
6845: my $request = shift;
6846:
6847: $Failures++;
6848: Reply($fd, $reply, $request); # That's simple eh?
1.161 foxr 6849: }
1.57 www 6850: # ------------------------------------------------------------------ Log status
6851:
6852: sub logstatus {
1.178 foxr 6853: &status("Doing logging");
6854: my $docdir=$perlvar{'lonDocRoot'};
6855: {
6856: my $fh=IO::File->new(">$docdir/lon-status/londchld/$$.txt");
1.200 matthew 6857: print $fh $status."\n".$lastlog."\n".time."\n$keymode";
1.178 foxr 6858: $fh->close();
6859: }
1.221 albertel 6860: &status("Finished $$.txt");
6861: {
6862: open(LOG,">>$docdir/lon-status/londstatus.txt");
6863: flock(LOG,LOCK_EX);
6864: print LOG $$."\t".$clientname."\t".$currenthostid."\t"
6865: .$status."\t".$lastlog."\t $keymode\n";
1.275 albertel 6866: flock(LOG,LOCK_UN);
1.221 albertel 6867: close(LOG);
6868: }
1.178 foxr 6869: &status("Finished logging");
1.57 www 6870: }
6871:
6872: sub initnewstatus {
6873: my $docdir=$perlvar{'lonDocRoot'};
6874: my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt");
1.460 foxr 6875: my $now=time();
1.57 www 6876: my $local=localtime($now);
6877: print $fh "LOND status $local - parent $$\n\n";
1.64 www 6878: opendir(DIR,"$docdir/lon-status/londchld");
1.134 albertel 6879: while (my $filename=readdir(DIR)) {
1.64 www 6880: unlink("$docdir/lon-status/londchld/$filename");
6881: }
6882: closedir(DIR);
1.57 www 6883: }
6884:
6885: # -------------------------------------------------------------- Status setting
6886:
6887: sub status {
6888: my $what=shift;
6889: my $now=time;
6890: my $local=localtime($now);
1.178 foxr 6891: $status=$local.': '.$what;
6892: $0='lond: '.$what.' '.$local;
1.57 www 6893: }
1.11 www 6894:
1.13 www 6895: # -------------------------------------------------------------- Talk to lonsql
6896:
1.234 foxr 6897: sub sql_reply {
1.12 harris41 6898: my ($cmd)=@_;
1.234 foxr 6899: my $answer=&sub_sql_reply($cmd);
6900: if ($answer eq 'con_lost') { $answer=&sub_sql_reply($cmd); }
1.12 harris41 6901: return $answer;
6902: }
6903:
1.234 foxr 6904: sub sub_sql_reply {
1.12 harris41 6905: my ($cmd)=@_;
6906: my $unixsock="mysqlsock";
6907: my $peerfile="$perlvar{'lonSockDir'}/$unixsock";
6908: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
6909: Type => SOCK_STREAM,
6910: Timeout => 10)
6911: or return "con_lost";
1.319 www 6912: print $sclient "$cmd:$currentdomainid\n";
1.12 harris41 6913: my $answer=<$sclient>;
6914: chomp($answer);
6915: if (!$answer) { $answer="con_lost"; }
6916: return $answer;
6917: }
6918:
1.1 albertel 6919: # --------------------------------------- Is this the home server of an author?
1.11 www 6920:
1.1 albertel 6921: sub ishome {
6922: my $author=shift;
6923: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
6924: my ($udom,$uname)=split(/\//,$author);
6925: my $proname=propath($udom,$uname);
6926: if (-e $proname) {
6927: return 'owner';
6928: } else {
6929: return 'not_owner';
6930: }
6931: }
6932:
6933: # ======================================================= Continue main program
6934: # ---------------------------------------------------- Fork once and dissociate
6935:
1.134 albertel 6936: my $fpid=fork;
1.1 albertel 6937: exit if $fpid;
1.29 harris41 6938: die "Couldn't fork: $!" unless defined ($fpid);
1.1 albertel 6939:
1.29 harris41 6940: POSIX::setsid() or die "Can't start new session: $!";
1.1 albertel 6941:
6942: # ------------------------------------------------------- Write our PID on disk
6943:
1.134 albertel 6944: my $execdir=$perlvar{'lonDaemons'};
1.1 albertel 6945: open (PIDSAVE,">$execdir/logs/lond.pid");
6946: print PIDSAVE "$$\n";
6947: close(PIDSAVE);
1.190 albertel 6948: &logthis("<font color='red'>CRITICAL: ---------- Starting ----------</font>");
1.57 www 6949: &status('Starting');
1.1 albertel 6950:
1.106 foxr 6951:
1.1 albertel 6952:
6953: # ----------------------------------------------------- Install signal handlers
6954:
1.57 www 6955:
1.1 albertel 6956: $SIG{CHLD} = \&REAPER;
6957: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
6958: $SIG{HUP} = \&HUPSMAN;
1.57 www 6959: $SIG{USR1} = \&checkchildren;
1.144 foxr 6960: $SIG{USR2} = \&UpdateHosts;
1.106 foxr 6961:
1.148 foxr 6962: # Read the host hashes:
1.368 albertel 6963: &Apache::lonnet::load_hosts_tab();
1.447 raeburn 6964: my %iphost = &Apache::lonnet::get_iphost(1);
1.106 foxr 6965:
1.480 raeburn 6966: $dist=`$perlvar{'lonDaemons'}/distprobe`;
1.286 albertel 6967:
1.471 raeburn 6968: my $arch = `uname -i`;
1.475 raeburn 6969: chomp($arch);
1.471 raeburn 6970: if ($arch eq 'unknown') {
6971: $arch = `uname -m`;
1.475 raeburn 6972: chomp($arch);
1.471 raeburn 6973: }
6974:
1.106 foxr 6975: # --------------------------------------------------------------
6976: # Accept connections. When a connection comes in, it is validated
6977: # and if good, a child process is created to process transactions
6978: # along the connection.
6979:
1.1 albertel 6980: while (1) {
1.165 albertel 6981: &status('Starting accept');
1.106 foxr 6982: $client = $server->accept() or next;
1.165 albertel 6983: &status('Accepted '.$client.' off to spawn');
1.386 albertel 6984: make_new_child($client);
1.165 albertel 6985: &status('Finished spawning');
1.1 albertel 6986: }
6987:
1.212 foxr 6988: sub make_new_child {
6989: my $pid;
6990: # my $cipher; # Now global
6991: my $sigset;
1.178 foxr 6992:
1.212 foxr 6993: $client = shift;
6994: &status('Starting new child '.$client);
6995: &logthis('<font color="green"> Attempting to start child ('.$client.
6996: ")</font>");
6997: # block signal for fork
6998: $sigset = POSIX::SigSet->new(SIGINT);
6999: sigprocmask(SIG_BLOCK, $sigset)
7000: or die "Can't block SIGINT for fork: $!\n";
1.178 foxr 7001:
1.212 foxr 7002: die "fork: $!" unless defined ($pid = fork);
1.178 foxr 7003:
1.212 foxr 7004: $client->sockopt(SO_KEEPALIVE, 1); # Enable monitoring of
7005: # connection liveness.
1.178 foxr 7006:
1.212 foxr 7007: #
7008: # Figure out who we're talking to so we can record the peer in
7009: # the pid hash.
7010: #
7011: my $caller = getpeername($client);
7012: my ($port,$iaddr);
7013: if (defined($caller) && length($caller) > 0) {
7014: ($port,$iaddr)=unpack_sockaddr_in($caller);
7015: } else {
7016: &logthis("Unable to determine who caller was, getpeername returned nothing");
7017: }
7018: if (defined($iaddr)) {
7019: $clientip = inet_ntoa($iaddr);
7020: Debug("Connected with $clientip");
7021: } else {
7022: &logthis("Unable to determine clientip");
7023: $clientip='Unavailable';
7024: }
7025:
7026: if ($pid) {
7027: # Parent records the child's birth and returns.
7028: sigprocmask(SIG_UNBLOCK, $sigset)
7029: or die "Can't unblock SIGINT for fork: $!\n";
7030: $children{$pid} = $clientip;
7031: &status('Started child '.$pid);
1.462 foxr 7032: close($client);
1.212 foxr 7033: return;
7034: } else {
7035: # Child can *not* return from this subroutine.
7036: $SIG{INT} = 'DEFAULT'; # make SIGINT kill us as it did before
7037: $SIG{CHLD} = 'DEFAULT'; #make this default so that pwauth returns
7038: #don't get intercepted
7039: $SIG{USR1}= \&logstatus;
7040: $SIG{ALRM}= \&timeout;
1.468 foxr 7041: #
7042: # Block sigpipe as it gets thrownon socket disconnect and we want to
7043: # deal with that as a read faiure instead.
7044: #
7045: my $blockset = POSIX::SigSet->new(SIGPIPE);
7046: sigprocmask(SIG_BLOCK, $blockset);
7047:
1.212 foxr 7048: $lastlog='Forked ';
7049: $status='Forked';
1.178 foxr 7050:
1.212 foxr 7051: # unblock signals
7052: sigprocmask(SIG_UNBLOCK, $sigset)
7053: or die "Can't unblock SIGINT for fork: $!\n";
1.178 foxr 7054:
1.212 foxr 7055: # my $tmpsnum=0; # Now global
7056: #---------------------------------------------------- kerberos 5 initialization
7057: &Authen::Krb5::init_context();
1.511 raeburn 7058:
7059: my $no_ets;
1.514 raeburn 7060: if ($dist =~ /^(?:centos|rhes|scientific)(\d+)$/) {
1.511 raeburn 7061: if ($1 >= 7) {
7062: $no_ets = 1;
7063: }
7064: } elsif ($dist =~ /^suse(\d+\.\d+)$/) {
7065: if (($1 eq '9.3') || ($1 >= 12.2)) {
7066: $no_ets = 1;
7067: }
1.514 raeburn 7068: } elsif ($dist =~ /^sles(\d+)$/) {
7069: if ($1 > 11) {
7070: $no_ets = 1;
7071: }
1.511 raeburn 7072: } elsif ($dist =~ /^fedora(\d+)$/) {
7073: if ($1 < 7) {
7074: $no_ets = 1;
7075: }
7076: }
7077: unless ($no_ets) {
1.286 albertel 7078: &Authen::Krb5::init_ets();
7079: }
1.209 albertel 7080:
1.212 foxr 7081: &status('Accepted connection');
7082: # =============================================================================
7083: # do something with the connection
7084: # -----------------------------------------------------------------------------
7085: # see if we know client and 'check' for spoof IP by ineffective challenge
1.178 foxr 7086:
1.278 albertel 7087: my $outsideip=$clientip;
7088: if ($clientip eq '127.0.0.1') {
1.368 albertel 7089: $outsideip=&Apache::lonnet::get_host_ip($perlvar{'lonHostID'});
1.278 albertel 7090: }
1.412 foxr 7091: &ReadManagerTable();
1.368 albertel 7092: my $clientrec=defined(&Apache::lonnet::get_hosts_from_ip($outsideip));
1.278 albertel 7093: my $ismanager=($managers{$outsideip} ne undef);
1.432 raeburn 7094: $clientname = "[unknown]";
1.212 foxr 7095: if($clientrec) { # Establish client type.
7096: $ConnectionType = "client";
1.368 albertel 7097: $clientname = (&Apache::lonnet::get_hosts_from_ip($outsideip))[-1];
1.212 foxr 7098: if($ismanager) {
7099: $ConnectionType = "both";
7100: }
7101: } else {
7102: $ConnectionType = "manager";
1.278 albertel 7103: $clientname = $managers{$outsideip};
1.212 foxr 7104: }
7105: my $clientok;
1.178 foxr 7106:
1.212 foxr 7107: if ($clientrec || $ismanager) {
7108: &status("Waiting for init from $clientip $clientname");
7109: &logthis('<font color="yellow">INFO: Connection, '.
7110: $clientip.
7111: " ($clientname) connection type = $ConnectionType </font>" );
7112: &status("Connecting $clientip ($clientname))");
7113: my $remotereq=<$client>;
7114: chomp($remotereq);
7115: Debug("Got init: $remotereq");
1.337 albertel 7116:
1.212 foxr 7117: if ($remotereq =~ /^init/) {
7118: &sethost("sethost:$perlvar{'lonHostID'}");
7119: #
7120: # If the remote is attempting a local init... give that a try:
7121: #
1.432 raeburn 7122: (my $i, my $inittype, $clientversion) = split(/:/, $remotereq);
1.492 droeschl 7123: # For LON-CAPA 2.9, the client session will have sent its LON-CAPA
7124: # version when initiating the connection. For LON-CAPA 2.8 and older,
7125: # the version is retrieved from the global %loncaparevs in lonnet.pm.
1.494 droeschl 7126: # $clientversion contains path to keyfile if $inittype eq 'local'
7127: # it's overridden below in this case
1.492 droeschl 7128: $clientversion ||= $Apache::lonnet::loncaparevs{$clientname};
1.209 albertel 7129:
1.212 foxr 7130: # If the connection type is ssl, but I didn't get my
7131: # certificate files yet, then I'll drop back to
7132: # insecure (if allowed).
7133:
7134: if($inittype eq "ssl") {
7135: my ($ca, $cert) = lonssl::CertificateFile;
7136: my $kfile = lonssl::KeyFile;
7137: if((!$ca) ||
7138: (!$cert) ||
7139: (!$kfile)) {
7140: $inittype = ""; # This forces insecure attempt.
7141: &logthis("<font color=\"blue\"> Certificates not "
7142: ."installed -- trying insecure auth</font>");
1.224 foxr 7143: } else { # SSL certificates are in place so
1.212 foxr 7144: } # Leave the inittype alone.
7145: }
7146:
7147: if($inittype eq "local") {
1.432 raeburn 7148: $clientversion = $perlvar{'lonVersion'};
1.212 foxr 7149: my $key = LocalConnection($client, $remotereq);
7150: if($key) {
7151: Debug("Got local key $key");
7152: $clientok = 1;
7153: my $cipherkey = pack("H32", $key);
7154: $cipher = new IDEA($cipherkey);
7155: print $client "ok:local\n";
1.442 www 7156: &logthis('<font color="green">'
1.212 foxr 7157: . "Successful local authentication </font>");
7158: $keymode = "local"
1.178 foxr 7159: } else {
1.212 foxr 7160: Debug("Failed to get local key");
7161: $clientok = 0;
7162: shutdown($client, 3);
7163: close $client;
1.178 foxr 7164: }
1.212 foxr 7165: } elsif ($inittype eq "ssl") {
7166: my $key = SSLConnection($client);
7167: if ($key) {
7168: $clientok = 1;
7169: my $cipherkey = pack("H32", $key);
7170: $cipher = new IDEA($cipherkey);
7171: &logthis('<font color="green">'
7172: ."Successfull ssl authentication with $clientname </font>");
7173: $keymode = "ssl";
7174:
1.178 foxr 7175: } else {
1.212 foxr 7176: $clientok = 0;
7177: close $client;
1.178 foxr 7178: }
1.212 foxr 7179:
7180: } else {
7181: my $ok = InsecureConnection($client);
7182: if($ok) {
7183: $clientok = 1;
7184: &logthis('<font color="green">'
7185: ."Successful insecure authentication with $clientname </font>");
7186: print $client "ok\n";
7187: $keymode = "insecure";
1.178 foxr 7188: } else {
1.212 foxr 7189: &logthis('<font color="yellow">'
7190: ."Attempted insecure connection disallowed </font>");
7191: close $client;
7192: $clientok = 0;
1.178 foxr 7193:
7194: }
7195: }
1.212 foxr 7196: } else {
7197: &logthis(
7198: "<font color='blue'>WARNING: "
7199: ."$clientip failed to initialize: >$remotereq< </font>");
7200: &status('No init '.$clientip);
7201: }
7202:
7203: } else {
7204: &logthis(
7205: "<font color='blue'>WARNING: Unknown client $clientip</font>");
7206: &status('Hung up on '.$clientip);
7207: }
7208:
7209: if ($clientok) {
7210: # ---------------- New known client connecting, could mean machine online again
1.368 albertel 7211: if (&Apache::lonnet::get_host_ip($currenthostid) ne $clientip
1.367 albertel 7212: && $clientip ne '127.0.0.1') {
1.375 albertel 7213: &Apache::lonnet::reconlonc($clientname);
1.212 foxr 7214: }
7215: &logthis("<font color='green'>Established connection: $clientname</font>");
7216: &status('Will listen to '.$clientname);
7217: # ------------------------------------------------------------ Process requests
7218: my $keep_going = 1;
7219: my $user_input;
1.448 raeburn 7220: my $clienthost = &Apache::lonnet::hostname($clientname);
7221: my $clientserverhomeID = &Apache::lonnet::get_server_homeID($clienthost);
7222: $clienthomedom = &Apache::lonnet::host_domain($clientserverhomeID);
1.525 raeburn 7223: $clientintdom = &Apache::lonnet::internet_dom($clientserverhomeID);
7224: $clientsameinst = 0;
7225: if ($clientintdom ne '') {
7226: my $internet_names = &Apache::lonnet::get_internet_names($currenthostid);
7227: if (ref($internet_names) eq 'ARRAY') {
7228: if (grep(/^\Q$clientintdom\E$/,@{$internet_names})) {
7229: $clientsameinst = 1;
7230: }
7231: }
7232: }
7233: $clientremoteok = 0;
7234: unless ($clientsameinst) {
7235: $clientremoteok = 1;
7236: my $defdom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
7237: %clientprohibited = &get_prohibited($defdom);
7238: if ($clientintdom) {
7239: my $remsessconf = &get_usersession_config($defdom,'remotesession');
7240: if (ref($remsessconf) eq 'HASH') {
7241: if (ref($remsessconf->{'remote'}) eq 'HASH') {
7242: if (ref($remsessconf->{'remote'}->{'excludedomain'}) eq 'ARRAY') {
7243: if (grep(/^\Q$clientintdom\E$/,@{$remsessconf->{'remote'}->{'excludedomain'}})) {
7244: $clientremoteok = 0;
7245: }
7246: }
7247: if (ref($remsessconf->{'remote'}->{'includedomain'}) eq 'ARRAY') {
7248: if (grep(/^\Q$clientintdom\E$/,@{$remsessconf->{'remote'}->{'includedomain'}})) {
7249: $clientremoteok = 1;
7250: } else {
7251: $clientremoteok = 0;
7252: }
7253: }
7254: }
7255: }
7256: }
7257: }
1.212 foxr 7258: while(($user_input = get_request) && $keep_going) {
7259: alarm(120);
7260: Debug("Main: Got $user_input\n");
7261: $keep_going = &process_request($user_input);
1.178 foxr 7262: alarm(0);
1.212 foxr 7263: &status('Listening to '.$clientname." ($keymode)");
1.161 foxr 7264: }
1.212 foxr 7265:
1.59 www 7266: # --------------------------------------------- client unknown or fishy, refuse
1.212 foxr 7267: } else {
1.161 foxr 7268: print $client "refused\n";
7269: $client->close();
1.190 albertel 7270: &logthis("<font color='blue'>WARNING: "
1.161 foxr 7271: ."Rejected client $clientip, closing connection</font>");
7272: }
1.525 raeburn 7273: }
1.161 foxr 7274:
1.1 albertel 7275: # =============================================================================
1.161 foxr 7276:
1.190 albertel 7277: &logthis("<font color='red'>CRITICAL: "
1.161 foxr 7278: ."Disconnect from $clientip ($clientname)</font>");
7279:
7280:
7281: # this exit is VERY important, otherwise the child will become
7282: # a producer of more and more children, forking yourself into
7283: # process death.
7284: exit;
1.106 foxr 7285:
1.78 foxr 7286: }
1.261 foxr 7287: #
7288: # Determine if a user is an author for the indicated domain.
7289: #
7290: # Parameters:
7291: # domain - domain to check in .
7292: # user - Name of user to check.
7293: #
7294: # Return:
7295: # 1 - User is an author for domain.
7296: # 0 - User is not an author for domain.
7297: sub is_author {
7298: my ($domain, $user) = @_;
7299:
7300: &Debug("is_author: $user @ $domain");
7301:
7302: my $hashref = &tie_user_hash($domain, $user, "roles",
7303: &GDBM_READER());
7304:
7305: # Author role should show up as a key /domain/_au
1.78 foxr 7306:
1.321 albertel 7307: my $value;
1.487 foxr 7308: if ($hashref) {
1.78 foxr 7309:
1.487 foxr 7310: my $key = "/$domain/_au";
7311: if (defined($hashref)) {
7312: $value = $hashref->{$key};
7313: if(!untie_user_hash($hashref)) {
7314: return 'error: ' . ($!+0)." untie (GDBM) Failed";
7315: }
7316: }
7317:
7318: if(defined($value)) {
7319: &Debug("$user @ $domain is an author");
7320: }
7321: } else {
7322: return 'error: '.($!+0)." tie (GDBM) Failed";
1.261 foxr 7323: }
7324:
7325: return defined($value);
7326: }
1.78 foxr 7327: #
7328: # Checks to see if the input roleput request was to set
1.482 www 7329: # an author role. If so, creates construction space
1.78 foxr 7330: # Parameters:
7331: # request - The request sent to the rolesput subchunk.
7332: # We're looking for /domain/_au
7333: # domain - The domain in which the user is having roles doctored.
7334: # user - Name of the user for which the role is being put.
7335: # authtype - The authentication type associated with the user.
7336: #
1.289 albertel 7337: sub manage_permissions {
1.192 foxr 7338: my ($request, $domain, $user, $authtype) = @_;
1.78 foxr 7339: # See if the request is of the form /$domain/_au
1.289 albertel 7340: if($request =~ /^(\/\Q$domain\E\/_au)$/) { # It's an author rolesput...
1.484 raeburn 7341: my $path=$perlvar{'lonDocRoot'}."/priv/$domain";
1.482 www 7342: unless (-e $path) {
7343: mkdir($path);
7344: }
7345: unless (-e $path.'/'.$user) {
7346: mkdir($path.'/'.$user);
7347: }
1.78 foxr 7348: }
7349: }
1.222 foxr 7350:
7351:
7352: #
7353: # Return the full path of a user password file, whether it exists or not.
7354: # Parameters:
7355: # domain - Domain in which the password file lives.
7356: # user - name of the user.
7357: # Returns:
7358: # Full passwd path:
7359: #
7360: sub password_path {
7361: my ($domain, $user) = @_;
1.264 albertel 7362: return &propath($domain, $user).'/passwd';
1.222 foxr 7363: }
7364:
7365: # Password Filename
7366: # Returns the path to a passwd file given domain and user... only if
7367: # it exists.
7368: # Parameters:
7369: # domain - Domain in which to search.
7370: # user - username.
7371: # Returns:
7372: # - If the password file exists returns its path.
7373: # - If the password file does not exist, returns undefined.
7374: #
7375: sub password_filename {
7376: my ($domain, $user) = @_;
7377:
7378: Debug ("PasswordFilename called: dom = $domain user = $user");
7379:
7380: my $path = &password_path($domain, $user);
7381: Debug("PasswordFilename got path: $path");
7382: if(-e $path) {
7383: return $path;
7384: } else {
7385: return undef;
7386: }
7387: }
7388:
7389: #
7390: # Rewrite the contents of the user's passwd file.
7391: # Parameters:
7392: # domain - domain of the user.
7393: # name - User's name.
7394: # contents - New contents of the file.
7395: # Returns:
7396: # 0 - Failed.
7397: # 1 - Success.
7398: #
7399: sub rewrite_password_file {
7400: my ($domain, $user, $contents) = @_;
7401:
7402: my $file = &password_filename($domain, $user);
7403: if (defined $file) {
7404: my $pf = IO::File->new(">$file");
7405: if($pf) {
7406: print $pf "$contents\n";
7407: return 1;
7408: } else {
7409: return 0;
7410: }
7411: } else {
7412: return 0;
7413: }
7414:
7415: }
7416:
1.78 foxr 7417: #
1.222 foxr 7418: # get_auth_type - Determines the authorization type of a user in a domain.
1.78 foxr 7419:
7420: # Returns the authorization type or nouser if there is no such user.
7421: #
1.436 raeburn 7422: sub get_auth_type {
1.192 foxr 7423: my ($domain, $user) = @_;
1.78 foxr 7424:
1.222 foxr 7425: Debug("get_auth_type( $domain, $user ) \n");
1.78 foxr 7426: my $proname = &propath($domain, $user);
7427: my $passwdfile = "$proname/passwd";
7428: if( -e $passwdfile ) {
7429: my $pf = IO::File->new($passwdfile);
7430: my $realpassword = <$pf>;
7431: chomp($realpassword);
1.79 foxr 7432: Debug("Password info = $realpassword\n");
1.78 foxr 7433: my ($authtype, $contentpwd) = split(/:/, $realpassword);
1.79 foxr 7434: Debug("Authtype = $authtype, content = $contentpwd\n");
1.259 raeburn 7435: return "$authtype:$contentpwd";
1.224 foxr 7436: } else {
1.79 foxr 7437: Debug("Returning nouser");
1.78 foxr 7438: return "nouser";
7439: }
1.1 albertel 7440: }
7441:
1.220 foxr 7442: #
7443: # Validate a user given their domain, name and password. This utility
7444: # function is used by both AuthenticateHandler and ChangePasswordHandler
7445: # to validate the login credentials of a user.
7446: # Parameters:
7447: # $domain - The domain being logged into (this is required due to
7448: # the capability for multihomed systems.
7449: # $user - The name of the user being validated.
7450: # $password - The user's propoposed password.
7451: #
7452: # Returns:
7453: # 1 - The domain,user,pasword triplet corresponds to a valid
7454: # user.
7455: # 0 - The domain,user,password triplet is not a valid user.
7456: #
7457: sub validate_user {
1.396 raeburn 7458: my ($domain, $user, $password, $checkdefauth) = @_;
1.220 foxr 7459:
7460: # Why negative ~pi you may well ask? Well this function is about
7461: # authentication, and therefore very important to get right.
7462: # I've initialized the flag that determines whether or not I've
7463: # validated correctly to a value it's not supposed to get.
7464: # At the end of this function. I'll ensure that it's not still that
7465: # value so we don't just wind up returning some accidental value
7466: # as a result of executing an unforseen code path that
1.249 foxr 7467: # did not set $validated. At the end of valid execution paths,
7468: # validated shoule be 1 for success or 0 for failuer.
1.220 foxr 7469:
7470: my $validated = -3.14159;
7471:
7472: # How we authenticate is determined by the type of authentication
7473: # the user has been assigned. If the authentication type is
7474: # "nouser", the user does not exist so we will return 0.
7475:
1.222 foxr 7476: my $contents = &get_auth_type($domain, $user);
1.220 foxr 7477: my ($howpwd, $contentpwd) = split(/:/, $contents);
7478:
7479: my $null = pack("C",0); # Used by kerberos auth types.
7480:
1.395 raeburn 7481: if ($howpwd eq 'nouser') {
1.396 raeburn 7482: if ($checkdefauth) {
7483: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
7484: if ($domdefaults{'auth_def'} eq 'localauth') {
7485: $howpwd = $domdefaults{'auth_def'};
7486: $contentpwd = $domdefaults{'auth_arg_def'};
7487: } elsif ((($domdefaults{'auth_def'} eq 'krb4') ||
7488: ($domdefaults{'auth_def'} eq 'krb5')) &&
7489: ($domdefaults{'auth_arg_def'} ne '')) {
7490: $howpwd = $domdefaults{'auth_def'};
7491: $contentpwd = $domdefaults{'auth_arg_def'};
7492: }
1.395 raeburn 7493: }
7494: }
1.220 foxr 7495: if ($howpwd ne 'nouser') {
7496: if($howpwd eq "internal") { # Encrypted is in local password file.
1.518 raeburn 7497: if (length($contentpwd) == 13) {
7498: $validated = (crypt($password,$contentpwd) eq $contentpwd);
7499: if ($validated) {
7500: my $ncpass = &hash_passwd($domain,$password);
7501: if (&rewrite_password_file($domain,$user,"$howpwd:$ncpass")) {
7502: &update_passwd_history($user,$domain,$howpwd,'conversion');
7503: &logthis("Validated password hashed with bcrypt for $user:$domain");
7504: }
7505: }
7506: } else {
7507: $validated = &check_internal_passwd($password,$contentpwd,$domain);
7508: }
1.220 foxr 7509: }
7510: elsif ($howpwd eq "unix") { # User is a normal unix user.
7511: $contentpwd = (getpwnam($user))[1];
7512: if($contentpwd) {
7513: if($contentpwd eq 'x') { # Shadow password file...
7514: my $pwauth_path = "/usr/local/sbin/pwauth";
7515: open PWAUTH, "|$pwauth_path" or
7516: die "Cannot invoke authentication";
7517: print PWAUTH "$user\n$password\n";
7518: close PWAUTH;
7519: $validated = ! $?;
7520:
7521: } else { # Passwords in /etc/passwd.
7522: $validated = (crypt($password,
7523: $contentpwd) eq $contentpwd);
7524: }
7525: } else {
7526: $validated = 0;
7527: }
1.439 raeburn 7528: } elsif ($howpwd eq "krb4") { # user is in kerberos 4 auth. domain.
7529: my $checkwithkrb5 = 0;
7530: if ($dist =~/^fedora(\d+)$/) {
7531: if ($1 > 11) {
7532: $checkwithkrb5 = 1;
7533: }
7534: } elsif ($dist =~ /^suse([\d.]+)$/) {
7535: if ($1 > 11.1) {
7536: $checkwithkrb5 = 1;
7537: }
7538: }
7539: if ($checkwithkrb5) {
7540: $validated = &krb5_authen($password,$null,$user,$contentpwd);
7541: } else {
7542: $validated = &krb4_authen($password,$null,$user,$contentpwd);
7543: }
1.224 foxr 7544: } elsif ($howpwd eq "krb5") { # User is in kerberos 5 auth. domain.
1.439 raeburn 7545: $validated = &krb5_authen($password,$null,$user,$contentpwd);
1.224 foxr 7546: } elsif ($howpwd eq "localauth") {
1.220 foxr 7547: # Authenticate via installation specific authentcation method:
7548: $validated = &localauth::localauth($user,
7549: $password,
1.353 albertel 7550: $contentpwd,
7551: $domain);
1.358 albertel 7552: if ($validated < 0) {
1.357 albertel 7553: &logthis("localauth for $contentpwd $user:$domain returned a $validated");
7554: $validated = 0;
7555: }
1.224 foxr 7556: } else { # Unrecognized auth is also bad.
1.220 foxr 7557: $validated = 0;
7558: }
7559: } else {
7560: $validated = 0;
7561: }
7562: #
7563: # $validated has the correct stat of the authentication:
7564: #
7565:
7566: unless ($validated != -3.14159) {
1.249 foxr 7567: # I >really really< want to know if this happens.
7568: # since it indicates that user authentication is badly
7569: # broken in some code path.
7570: #
7571: die "ValidateUser - failed to set the value of validated $domain, $user $password";
1.220 foxr 7572: }
7573: return $validated;
7574: }
7575:
1.518 raeburn 7576: sub check_internal_passwd {
7577: my ($plainpass,$stored,$domain) = @_;
7578: my (undef,$method,@rest) = split(/!/,$stored);
7579: if ($method eq "bcrypt") {
7580: my $result = &hash_passwd($domain,$plainpass,@rest);
7581: if ($result ne $stored) {
7582: return 0;
7583: }
7584: # Upgrade to a larger number of rounds if necessary
7585: my $defaultcost;
7586: my %domconfig =
7587: &Apache::lonnet::get_dom('configuration',['password'],$domain);
7588: if (ref($domconfig{'password'}) eq 'HASH') {
7589: $defaultcost = $domconfig{'password'}{'cost'};
7590: }
7591: if (($defaultcost eq '') || ($defaultcost =~ /D/)) {
7592: $defaultcost = 10;
7593: }
7594: return 1 unless($rest[0]<$defaultcost);
7595: }
7596: return 0;
7597: }
7598:
7599: sub get_last_authchg {
7600: my ($domain,$user) = @_;
7601: my $lastmod;
7602: my $logname = &propath($domain,$user).'/passwd.log';
7603: if (-e "$logname") {
7604: $lastmod = (stat("$logname"))[9];
7605: }
7606: return $lastmod;
7607: }
7608:
1.439 raeburn 7609: sub krb4_authen {
7610: my ($password,$null,$user,$contentpwd) = @_;
7611: my $validated = 0;
7612: if (!($password =~ /$null/) ) { # Null password not allowed.
7613: eval {
7614: require Authen::Krb4;
7615: };
7616: if (!$@) {
7617: my $k4error = &Authen::Krb4::get_pw_in_tkt($user,
7618: "",
7619: $contentpwd,,
7620: 'krbtgt',
7621: $contentpwd,
7622: 1,
7623: $password);
7624: if(!$k4error) {
7625: $validated = 1;
7626: } else {
7627: $validated = 0;
7628: &logthis('krb4: '.$user.', '.$contentpwd.', '.
7629: &Authen::Krb4::get_err_txt($Authen::Krb4::error));
7630: }
7631: } else {
7632: $validated = krb5_authen($password,$null,$user,$contentpwd);
7633: }
7634: }
7635: return $validated;
7636: }
7637:
7638: sub krb5_authen {
7639: my ($password,$null,$user,$contentpwd) = @_;
7640: my $validated = 0;
7641: if(!($password =~ /$null/)) { # Null password not allowed.
7642: my $krbclient = &Authen::Krb5::parse_name($user.'@'
7643: .$contentpwd);
7644: my $krbservice = "krbtgt/".$contentpwd."\@".$contentpwd;
7645: my $krbserver = &Authen::Krb5::parse_name($krbservice);
7646: my $credentials= &Authen::Krb5::cc_default();
7647: $credentials->initialize(&Authen::Krb5::parse_name($user.'@'
7648: .$contentpwd));
7649: my $krbreturn;
7650: if (exists(&Authen::Krb5::get_init_creds_password)) {
7651: $krbreturn =
7652: &Authen::Krb5::get_init_creds_password($krbclient,$password,
7653: $krbservice);
7654: $validated = (ref($krbreturn) eq 'Authen::Krb5::Creds');
7655: } else {
7656: $krbreturn =
7657: &Authen::Krb5::get_in_tkt_with_password($krbclient,$krbserver,
7658: $password,$credentials);
7659: $validated = ($krbreturn == 1);
7660: }
7661: if (!$validated) {
7662: &logthis('krb5: '.$user.', '.$contentpwd.', '.
7663: &Authen::Krb5::error());
7664: }
7665: }
7666: return $validated;
7667: }
1.220 foxr 7668:
1.84 albertel 7669: sub addline {
7670: my ($fname,$hostid,$ip,$newline)=@_;
7671: my $contents;
7672: my $found=0;
1.355 albertel 7673: my $expr='^'.quotemeta($hostid).':'.quotemeta($ip).':';
1.134 albertel 7674: my $sh;
1.84 albertel 7675: if ($sh=IO::File->new("$fname.subscription")) {
7676: while (my $subline=<$sh>) {
7677: if ($subline !~ /$expr/) {$contents.= $subline;} else {$found=1;}
7678: }
7679: $sh->close();
7680: }
7681: $sh=IO::File->new(">$fname.subscription");
7682: if ($contents) { print $sh $contents; }
7683: if ($newline) { print $sh $newline; }
7684: $sh->close();
7685: return $found;
1.86 www 7686: }
7687:
1.234 foxr 7688: sub get_chat {
1.324 raeburn 7689: my ($cdom,$cname,$udom,$uname,$group)=@_;
1.310 albertel 7690:
1.87 www 7691: my @entries=();
1.324 raeburn 7692: my $namespace = 'nohist_chatroom';
7693: my $namespace_inroom = 'nohist_inchatroom';
1.335 albertel 7694: if ($group ne '') {
1.324 raeburn 7695: $namespace .= '_'.$group;
7696: $namespace_inroom .= '_'.$group;
7697: }
7698: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 7699: &GDBM_READER());
7700: if ($hashref) {
7701: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.311 albertel 7702: &untie_user_hash($hashref);
1.123 www 7703: }
1.124 www 7704: my @participants=();
1.134 albertel 7705: my $cutoff=time-60;
1.324 raeburn 7706: $hashref = &tie_user_hash($cdom, $cname, $namespace_inroom,
1.310 albertel 7707: &GDBM_WRCREAT());
7708: if ($hashref) {
7709: $hashref->{$uname.':'.$udom}=time;
7710: foreach my $user (sort(keys(%$hashref))) {
7711: if ($hashref->{$user}>$cutoff) {
7712: push(@participants, 'active_participant:'.$user);
1.123 www 7713: }
7714: }
1.311 albertel 7715: &untie_user_hash($hashref);
1.86 www 7716: }
1.124 www 7717: return (@participants,@entries);
1.86 www 7718: }
7719:
1.234 foxr 7720: sub chat_add {
1.324 raeburn 7721: my ($cdom,$cname,$newchat,$group)=@_;
1.88 albertel 7722: my @entries=();
1.142 www 7723: my $time=time;
1.324 raeburn 7724: my $namespace = 'nohist_chatroom';
7725: my $logfile = 'chatroom.log';
1.335 albertel 7726: if ($group ne '') {
1.324 raeburn 7727: $namespace .= '_'.$group;
7728: $logfile = 'chatroom_'.$group.'.log';
7729: }
7730: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 7731: &GDBM_WRCREAT());
7732: if ($hashref) {
7733: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.88 albertel 7734: my ($lastid)=($entries[$#entries]=~/^(\w+)\:/);
7735: my ($thentime,$idnum)=split(/\_/,$lastid);
7736: my $newid=$time.'_000000';
7737: if ($thentime==$time) {
7738: $idnum=~s/^0+//;
7739: $idnum++;
7740: $idnum=substr('000000'.$idnum,-6,6);
7741: $newid=$time.'_'.$idnum;
7742: }
1.310 albertel 7743: $hashref->{$newid}=$newchat;
1.88 albertel 7744: my $expired=$time-3600;
1.310 albertel 7745: foreach my $comment (keys(%$hashref)) {
7746: my ($thistime) = ($comment=~/(\d+)\_/);
1.88 albertel 7747: if ($thistime<$expired) {
1.310 albertel 7748: delete $hashref->{$comment};
1.88 albertel 7749: }
7750: }
1.310 albertel 7751: {
7752: my $proname=&propath($cdom,$cname);
1.324 raeburn 7753: if (open(CHATLOG,">>$proname/$logfile")) {
1.310 albertel 7754: print CHATLOG ("$time:".&unescape($newchat)."\n");
7755: }
7756: close(CHATLOG);
1.142 www 7757: }
1.311 albertel 7758: &untie_user_hash($hashref);
1.86 www 7759: }
1.84 albertel 7760: }
7761:
7762: sub unsub {
7763: my ($fname,$clientip)=@_;
7764: my $result;
1.188 foxr 7765: my $unsubs = 0; # Number of successful unsubscribes:
7766:
7767:
7768: # An old way subscriptions were handled was to have a
7769: # subscription marker file:
7770:
7771: Debug("Attempting unlink of $fname.$clientname");
1.161 foxr 7772: if (unlink("$fname.$clientname")) {
1.188 foxr 7773: $unsubs++; # Successful unsub via marker file.
7774: }
7775:
7776: # The more modern way to do it is to have a subscription list
7777: # file:
7778:
1.84 albertel 7779: if (-e "$fname.subscription") {
1.161 foxr 7780: my $found=&addline($fname,$clientname,$clientip,'');
1.188 foxr 7781: if ($found) {
7782: $unsubs++;
7783: }
7784: }
7785:
7786: # If either or both of these mechanisms succeeded in unsubscribing a
7787: # resource we can return ok:
7788:
7789: if($unsubs) {
7790: $result = "ok\n";
1.84 albertel 7791: } else {
1.188 foxr 7792: $result = "not_subscribed\n";
1.84 albertel 7793: }
1.188 foxr 7794:
1.84 albertel 7795: return $result;
7796: }
7797:
1.101 www 7798: sub currentversion {
7799: my $fname=shift;
7800: my $version=-1;
7801: my $ulsdir='';
7802: if ($fname=~/^(.+)\/[^\/]+$/) {
7803: $ulsdir=$1;
7804: }
1.114 albertel 7805: my ($fnamere1,$fnamere2);
7806: # remove version if already specified
1.101 www 7807: $fname=~s/\.\d+\.(\w+(?:\.meta)*)$/\.$1/;
1.114 albertel 7808: # get the bits that go before and after the version number
7809: if ( $fname=~/^(.*\.)(\w+(?:\.meta)*)$/ ) {
7810: $fnamere1=$1;
7811: $fnamere2='.'.$2;
7812: }
1.101 www 7813: if (-e $fname) { $version=1; }
7814: if (-e $ulsdir) {
1.134 albertel 7815: if(-d $ulsdir) {
7816: if (opendir(LSDIR,$ulsdir)) {
7817: my $ulsfn;
7818: while ($ulsfn=readdir(LSDIR)) {
1.101 www 7819: # see if this is a regular file (ignore links produced earlier)
1.134 albertel 7820: my $thisfile=$ulsdir.'/'.$ulsfn;
7821: unless (-l $thisfile) {
1.160 www 7822: if ($thisfile=~/\Q$fnamere1\E(\d+)\Q$fnamere2\E$/) {
1.134 albertel 7823: if ($1>$version) { $version=$1; }
7824: }
7825: }
7826: }
7827: closedir(LSDIR);
7828: $version++;
7829: }
7830: }
7831: }
7832: return $version;
1.101 www 7833: }
7834:
7835: sub thisversion {
7836: my $fname=shift;
7837: my $version=-1;
7838: if ($fname=~/\.(\d+)\.\w+(?:\.meta)*$/) {
7839: $version=$1;
7840: }
7841: return $version;
7842: }
7843:
1.84 albertel 7844: sub subscribe {
7845: my ($userinput,$clientip)=@_;
7846: my $result;
1.293 albertel 7847: my ($cmd,$fname)=split(/:/,$userinput,2);
1.84 albertel 7848: my $ownership=&ishome($fname);
7849: if ($ownership eq 'owner') {
1.101 www 7850: # explitly asking for the current version?
7851: unless (-e $fname) {
7852: my $currentversion=¤tversion($fname);
7853: if (&thisversion($fname)==$currentversion) {
7854: if ($fname=~/^(.+)\.\d+\.(\w+(?:\.meta)*)$/) {
7855: my $root=$1;
7856: my $extension=$2;
7857: symlink($root.'.'.$extension,
7858: $root.'.'.$currentversion.'.'.$extension);
1.102 www 7859: unless ($extension=~/\.meta$/) {
7860: symlink($root.'.'.$extension.'.meta',
7861: $root.'.'.$currentversion.'.'.$extension.'.meta');
7862: }
1.101 www 7863: }
7864: }
7865: }
1.84 albertel 7866: if (-e $fname) {
7867: if (-d $fname) {
7868: $result="directory\n";
7869: } else {
1.161 foxr 7870: if (-e "$fname.$clientname") {&unsub($fname,$clientip);}
1.134 albertel 7871: my $now=time;
1.161 foxr 7872: my $found=&addline($fname,$clientname,$clientip,
7873: "$clientname:$clientip:$now\n");
1.84 albertel 7874: if ($found) { $result="$fname\n"; }
7875: # if they were subscribed to only meta data, delete that
7876: # subscription, when you subscribe to a file you also get
7877: # the metadata
7878: unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); }
7879: $fname=~s/\/home\/httpd\/html\/res/raw/;
1.476 raeburn 7880: my $protocol = $Apache::lonnet::protocol{$perlvar{'lonHostID'}};
7881: $protocol = 'http' if ($protocol ne 'https');
7882: $fname=$protocol.'://'.&Apache::lonnet::hostname($perlvar{'lonHostID'})."/".$fname;
1.84 albertel 7883: $result="$fname\n";
7884: }
7885: } else {
7886: $result="not_found\n";
7887: }
7888: } else {
7889: $result="rejected\n";
7890: }
7891: return $result;
7892: }
1.287 foxr 7893: # Change the passwd of a unix user. The caller must have
7894: # first verified that the user is a loncapa user.
7895: #
7896: # Parameters:
7897: # user - Unix user name to change.
7898: # pass - New password for the user.
7899: # Returns:
7900: # ok - if success
7901: # other - Some meaningfule error message string.
7902: # NOTE:
7903: # invokes a setuid script to change the passwd.
7904: sub change_unix_password {
7905: my ($user, $pass) = @_;
7906:
7907: &Debug("change_unix_password");
7908: my $execdir=$perlvar{'lonDaemons'};
7909: &Debug("Opening lcpasswd pipeline");
7910: my $pf = IO::File->new("|$execdir/lcpasswd > "
7911: ."$perlvar{'lonDaemons'}"
7912: ."/logs/lcpasswd.log");
7913: print $pf "$user\n$pass\n$pass\n";
7914: close $pf;
7915: my $err = $?;
7916: return ($err < @passwderrors) ? $passwderrors[$err] :
7917: "pwchange_falure - unknown error";
7918:
7919:
7920: }
7921:
1.91 albertel 7922:
7923: sub make_passwd_file {
1.518 raeburn 7924: my ($uname,$udom,$umode,$npass,$passfilename,$action)=@_;
1.390 raeburn 7925: my $result="ok";
1.91 albertel 7926: if ($umode eq 'krb4' or $umode eq 'krb5') {
7927: {
7928: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7929: if ($pf) {
7930: print $pf "$umode:$npass\n";
1.518 raeburn 7931: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 7932: } else {
7933: $result = "pass_file_failed_error";
7934: }
1.91 albertel 7935: }
7936: } elsif ($umode eq 'internal') {
1.518 raeburn 7937: my $ncpass = &hash_passwd($udom,$npass);
1.91 albertel 7938: {
7939: &Debug("Creating internal auth");
7940: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7941: if($pf) {
1.518 raeburn 7942: print $pf "internal:$ncpass\n";
7943: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 7944: } else {
7945: $result = "pass_file_failed_error";
7946: }
1.91 albertel 7947: }
7948: } elsif ($umode eq 'localauth') {
7949: {
7950: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7951: if($pf) {
7952: print $pf "localauth:$npass\n";
1.524 raeburn 7953: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 7954: } else {
7955: $result = "pass_file_failed_error";
7956: }
1.91 albertel 7957: }
7958: } elsif ($umode eq 'unix') {
1.502 raeburn 7959: &logthis(">>>Attempt to create unix account blocked -- unix auth not available for new users.");
7960: $result="no_new_unix_accounts";
1.91 albertel 7961: } elsif ($umode eq 'none') {
7962: {
1.223 foxr 7963: my $pf = IO::File->new("> $passfilename");
1.261 foxr 7964: if($pf) {
7965: print $pf "none:\n";
7966: } else {
7967: $result = "pass_file_failed_error";
7968: }
1.91 albertel 7969: }
7970: } else {
1.390 raeburn 7971: $result="auth_mode_error";
1.91 albertel 7972: }
7973: return $result;
1.121 albertel 7974: }
7975:
1.265 albertel 7976: sub convert_photo {
7977: my ($start,$dest)=@_;
7978: system("convert $start $dest");
7979: }
7980:
1.121 albertel 7981: sub sethost {
7982: my ($remotereq) = @_;
7983: my (undef,$hostid)=split(/:/,$remotereq);
1.322 albertel 7984: # ignore sethost if we are already correct
7985: if ($hostid eq $currenthostid) {
7986: return 'ok';
7987: }
7988:
1.121 albertel 7989: if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; }
1.368 albertel 7990: if (&Apache::lonnet::get_host_ip($perlvar{'lonHostID'})
7991: eq &Apache::lonnet::get_host_ip($hostid)) {
1.200 matthew 7992: $currenthostid =$hostid;
1.369 albertel 7993: $currentdomainid=&Apache::lonnet::host_domain($hostid);
1.443 www 7994: # &logthis("Setting hostid to $hostid, and domain to $currentdomainid");
1.121 albertel 7995: } else {
7996: &logthis("Requested host id $hostid not an alias of ".
7997: $perlvar{'lonHostID'}." refusing connection");
7998: return 'unable_to_set';
7999: }
8000: return 'ok';
8001: }
8002:
8003: sub version {
8004: my ($userinput)=@_;
8005: $remoteVERSION=(split(/:/,$userinput))[1];
8006: return "version:$VERSION";
1.127 albertel 8007: }
1.178 foxr 8008:
1.447 raeburn 8009: sub get_usersession_config {
8010: my ($dom,$name) = @_;
8011: my ($usersessionconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
8012: if (defined($cached)) {
8013: return $usersessionconf;
8014: } else {
8015: my %domconfig = &Apache::lonnet::get_dom('configuration',['usersessions'],$dom);
1.525 raeburn 8016: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'usersessions'},3600);
8017: return $domconfig{'usersessions'};
1.447 raeburn 8018: }
8019: return;
8020: }
1.200 matthew 8021:
1.525 raeburn 8022: sub get_prohibited {
8023: my ($dom) = @_;
8024: my $name = 'trust';
8025: my ($trustconfig,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
8026: unless (defined($cached)) {
8027: my %domconfig = &Apache::lonnet::get_dom('configuration',['trust'],$dom);
8028: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'trust'},3600);
8029: $trustconfig = $domconfig{'trust'};
8030: }
8031: my %prohibited;
8032: if (ref($trustconfig)) {
8033: foreach my $prefix (keys(%{$trustconfig})) {
8034: if (ref($trustconfig->{$prefix}) eq 'HASH') {
8035: my $reject;
8036: if (ref($trustconfig->{$prefix}->{'exc'}) eq 'ARRAY') {
8037: if (grep(/^\Q$clientintdom\E$/,@{$trustconfig->{$prefix}->{'exc'}})) {
8038: $reject = 1;
8039: }
8040: }
8041: if (ref($trustconfig->{$prefix}->{'inc'}) eq 'ARRAY') {
8042: if (grep(/^\Q$clientintdom\E$/,@{$trustconfig->{$prefix}->{'inc'}})) {
8043: $reject = 0;
8044: } else {
8045: $reject = 1;
8046: }
8047: }
8048: if ($reject) {
8049: $prohibited{$prefix} = 1;
8050: }
8051: }
8052: }
8053: }
8054: return %prohibited;
8055: }
1.450 raeburn 8056:
1.471 raeburn 8057: sub distro_and_arch {
8058: return $dist.':'.$arch;
8059: }
8060:
1.61 harris41 8061: # ----------------------------------- POD (plain old documentation, CPAN style)
8062:
8063: =head1 NAME
8064:
8065: lond - "LON Daemon" Server (port "LOND" 5663)
8066:
8067: =head1 SYNOPSIS
8068:
1.74 harris41 8069: Usage: B<lond>
8070:
8071: Should only be run as user=www. This is a command-line script which
8072: is invoked by B<loncron>. There is no expectation that a typical user
8073: will manually start B<lond> from the command-line. (In other words,
8074: DO NOT START B<lond> YOURSELF.)
1.61 harris41 8075:
8076: =head1 DESCRIPTION
8077:
1.74 harris41 8078: There are two characteristics associated with the running of B<lond>,
8079: PROCESS MANAGEMENT (starting, stopping, handling child processes)
8080: and SERVER-SIDE ACTIVITIES (password authentication, user creation,
8081: subscriptions, etc). These are described in two large
8082: sections below.
8083:
8084: B<PROCESS MANAGEMENT>
8085:
1.61 harris41 8086: Preforker - server who forks first. Runs as a daemon. HUPs.
8087: Uses IDEA encryption
8088:
1.74 harris41 8089: B<lond> forks off children processes that correspond to the other servers
8090: in the network. Management of these processes can be done at the
8091: parent process level or the child process level.
8092:
8093: B<logs/lond.log> is the location of log messages.
8094:
8095: The process management is now explained in terms of linux shell commands,
8096: subroutines internal to this code, and signal assignments:
8097:
8098: =over 4
8099:
8100: =item *
8101:
8102: PID is stored in B<logs/lond.pid>
8103:
8104: This is the process id number of the parent B<lond> process.
8105:
8106: =item *
8107:
8108: SIGTERM and SIGINT
8109:
8110: Parent signal assignment:
8111: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
8112:
8113: Child signal assignment:
8114: $SIG{INT} = 'DEFAULT'; (and SIGTERM is DEFAULT also)
8115: (The child dies and a SIGALRM is sent to parent, awaking parent from slumber
8116: to restart a new child.)
8117:
8118: Command-line invocations:
8119: B<kill> B<-s> SIGTERM I<PID>
8120: B<kill> B<-s> SIGINT I<PID>
8121:
8122: Subroutine B<HUNTSMAN>:
8123: This is only invoked for the B<lond> parent I<PID>.
8124: This kills all the children, and then the parent.
8125: The B<lonc.pid> file is cleared.
8126:
8127: =item *
8128:
8129: SIGHUP
8130:
8131: Current bug:
8132: This signal can only be processed the first time
8133: on the parent process. Subsequent SIGHUP signals
8134: have no effect.
8135:
8136: Parent signal assignment:
8137: $SIG{HUP} = \&HUPSMAN;
8138:
8139: Child signal assignment:
8140: none (nothing happens)
8141:
8142: Command-line invocations:
8143: B<kill> B<-s> SIGHUP I<PID>
8144:
8145: Subroutine B<HUPSMAN>:
8146: This is only invoked for the B<lond> parent I<PID>,
8147: This kills all the children, and then the parent.
8148: The B<lond.pid> file is cleared.
8149:
8150: =item *
8151:
8152: SIGUSR1
8153:
8154: Parent signal assignment:
8155: $SIG{USR1} = \&USRMAN;
8156:
8157: Child signal assignment:
8158: $SIG{USR1}= \&logstatus;
8159:
8160: Command-line invocations:
8161: B<kill> B<-s> SIGUSR1 I<PID>
8162:
8163: Subroutine B<USRMAN>:
8164: When invoked for the B<lond> parent I<PID>,
8165: SIGUSR1 is sent to all the children, and the status of
8166: each connection is logged.
1.144 foxr 8167:
8168: =item *
8169:
8170: SIGUSR2
8171:
8172: Parent Signal assignment:
8173: $SIG{USR2} = \&UpdateHosts
8174:
8175: Child signal assignment:
8176: NONE
8177:
1.74 harris41 8178:
8179: =item *
8180:
8181: SIGCHLD
8182:
8183: Parent signal assignment:
8184: $SIG{CHLD} = \&REAPER;
8185:
8186: Child signal assignment:
8187: none
8188:
8189: Command-line invocations:
8190: B<kill> B<-s> SIGCHLD I<PID>
8191:
8192: Subroutine B<REAPER>:
8193: This is only invoked for the B<lond> parent I<PID>.
8194: Information pertaining to the child is removed.
8195: The socket port is cleaned up.
8196:
8197: =back
8198:
8199: B<SERVER-SIDE ACTIVITIES>
8200:
8201: Server-side information can be accepted in an encrypted or non-encrypted
8202: method.
8203:
8204: =over 4
8205:
8206: =item ping
8207:
8208: Query a client in the hosts.tab table; "Are you there?"
8209:
8210: =item pong
8211:
8212: Respond to a ping query.
8213:
8214: =item ekey
8215:
8216: Read in encrypted key, make cipher. Respond with a buildkey.
8217:
8218: =item load
8219:
8220: Respond with CPU load based on a computation upon /proc/loadavg.
8221:
8222: =item currentauth
8223:
8224: Reply with current authentication information (only over an
8225: encrypted channel).
8226:
8227: =item auth
8228:
8229: Only over an encrypted channel, reply as to whether a user's
8230: authentication information can be validated.
8231:
8232: =item passwd
8233:
8234: Allow for a password to be set.
8235:
8236: =item makeuser
8237:
8238: Make a user.
8239:
1.517 raeburn 8240: =item changeuserauth
1.74 harris41 8241:
8242: Allow for authentication mechanism and password to be changed.
8243:
8244: =item home
1.61 harris41 8245:
1.74 harris41 8246: Respond to a question "are you the home for a given user?"
8247:
8248: =item update
8249:
8250: Update contents of a subscribed resource.
8251:
8252: =item unsubscribe
8253:
8254: The server is unsubscribing from a resource.
8255:
8256: =item subscribe
8257:
8258: The server is subscribing to a resource.
8259:
8260: =item log
8261:
8262: Place in B<logs/lond.log>
8263:
8264: =item put
8265:
8266: stores hash in namespace
8267:
1.496 raeburn 8268: =item rolesput
1.74 harris41 8269:
8270: put a role into a user's environment
8271:
8272: =item get
8273:
8274: returns hash with keys from array
8275: reference filled in from namespace
8276:
8277: =item eget
8278:
8279: returns hash with keys from array
8280: reference filled in from namesp (encrypts the return communication)
8281:
8282: =item rolesget
8283:
8284: get a role from a user's environment
8285:
8286: =item del
8287:
8288: deletes keys out of array from namespace
8289:
8290: =item keys
8291:
8292: returns namespace keys
8293:
8294: =item dump
8295:
8296: dumps the complete (or key matching regexp) namespace into a hash
8297:
8298: =item store
8299:
8300: stores hash permanently
8301: for this url; hashref needs to be given and should be a \%hashname; the
8302: remaining args aren't required and if they aren't passed or are '' they will
8303: be derived from the ENV
8304:
8305: =item restore
8306:
8307: returns a hash for a given url
8308:
8309: =item querysend
8310:
8311: Tells client about the lonsql process that has been launched in response
8312: to a sent query.
8313:
8314: =item queryreply
8315:
8316: Accept information from lonsql and make appropriate storage in temporary
8317: file space.
8318:
8319: =item idput
8320:
8321: Defines usernames as corresponding to IDs. (These "IDs" are unique identifiers
8322: for each student, defined perhaps by the institutional Registrar.)
8323:
8324: =item idget
8325:
8326: Returns usernames corresponding to IDs. (These "IDs" are unique identifiers
8327: for each student, defined perhaps by the institutional Registrar.)
8328:
1.517 raeburn 8329: =item iddel
8330:
8331: Deletes one or more ids in a domain's id database.
8332:
1.74 harris41 8333: =item tmpput
8334:
8335: Accept and store information in temporary space.
8336:
8337: =item tmpget
8338:
8339: Send along temporarily stored information.
8340:
8341: =item ls
8342:
8343: List part of a user's directory.
8344:
1.135 foxr 8345: =item pushtable
8346:
8347: Pushes a file in /home/httpd/lonTab directory. Currently limited to:
8348: hosts.tab and domain.tab. The old file is copied to *.tab.backup but
8349: must be restored manually in case of a problem with the new table file.
8350: pushtable requires that the request be encrypted and validated via
8351: ValidateManager. The form of the command is:
8352: enc:pushtable tablename <tablecontents> \n
8353: where pushtable, tablename and <tablecontents> will be encrypted, but \n is a
8354: cleartext newline.
8355:
1.74 harris41 8356: =item Hanging up (exit or init)
8357:
8358: What to do when a client tells the server that they (the client)
8359: are leaving the network.
8360:
8361: =item unknown command
8362:
8363: If B<lond> is sent an unknown command (not in the list above),
8364: it replys to the client "unknown_cmd".
1.135 foxr 8365:
1.74 harris41 8366:
8367: =item UNKNOWN CLIENT
8368:
8369: If the anti-spoofing algorithm cannot verify the client,
8370: the client is rejected (with a "refused" message sent
8371: to the client, and the connection is closed.
8372:
8373: =back
1.61 harris41 8374:
8375: =head1 PREREQUISITES
8376:
8377: IO::Socket
8378: IO::File
8379: Apache::File
8380: POSIX
8381: Crypt::IDEA
8382: LWP::UserAgent()
8383: GDBM_File
8384: Authen::Krb4
1.91 albertel 8385: Authen::Krb5
1.61 harris41 8386:
8387: =head1 COREQUISITES
8388:
1.490 droeschl 8389: none
8390:
1.61 harris41 8391: =head1 OSNAMES
8392:
8393: linux
8394:
8395: =head1 SCRIPT CATEGORIES
8396:
8397: Server/Process
8398:
8399: =cut
1.409 foxr 8400:
8401:
8402: =pod
8403:
8404: =head1 LOG MESSAGES
8405:
8406: The messages below can be emitted in the lond log. This log is located
8407: in ~httpd/perl/logs/lond.log Many log messages have HTML encapsulation
8408: to provide coloring if examined from inside a web page. Some do not.
8409: Where color is used, the colors are; Red for sometihhng to get excited
8410: about and to follow up on. Yellow for something to keep an eye on to
8411: be sure it does not get worse, Green,and Blue for informational items.
8412:
8413: In the discussions below, sometimes reference is made to ~httpd
8414: when describing file locations. There isn't really an httpd
8415: user, however there is an httpd directory that gets installed in the
8416: place that user home directories go. On linux, this is usually
8417: (always?) /home/httpd.
8418:
8419:
8420: Some messages are colorless. These are usually (not always)
8421: Green/Blue color level messages.
8422:
8423: =over 2
8424:
8425: =item (Red) LocalConnection rejecting non local: <ip> ne 127.0.0.1
8426:
8427: A local connection negotiation was attempted by
8428: a host whose IP address was not 127.0.0.1.
8429: The socket is closed and the child will exit.
8430: lond has three ways to establish an encyrption
8431: key with a client:
8432:
8433: =over 2
8434:
8435: =item local
8436:
8437: The key is written and read from a file.
8438: This is only valid for connections from localhost.
8439:
8440: =item insecure
8441:
8442: The key is generated by the server and
8443: transmitted to the client.
8444:
8445: =item ssl (secure)
8446:
8447: An ssl connection is negotiated with the client,
8448: the key is generated by the server and sent to the
8449: client across this ssl connection before the
8450: ssl connectionis terminated and clear text
8451: transmission resumes.
8452:
8453: =back
8454:
8455: =item (Red) LocalConnection: caller is insane! init = <init> and type = <type>
8456:
8457: The client is local but has not sent an initialization
8458: string that is the literal "init:local" The connection
8459: is closed and the child exits.
8460:
8461: =item Red CRITICAL Can't get key file <error>
8462:
8463: SSL key negotiation is being attempted but the call to
8464: lonssl::KeyFile failed. This usually means that the
8465: configuration file is not correctly defining or protecting
8466: the directories/files lonCertificateDirectory or
8467: lonnetPrivateKey
8468: <error> is a string that describes the reason that
8469: the key file could not be located.
8470:
8471: =item (Red) CRITICAL Can't get certificates <error>
8472:
8473: SSL key negotiation failed because we were not able to retrives our certificate
8474: or the CA's certificate in the call to lonssl::CertificateFile
8475: <error> is the textual reason this failed. Usual reasons:
8476:
8477: =over 2
1.490 droeschl 8478:
1.409 foxr 8479: =item Apache config file for loncapa incorrect:
1.490 droeschl 8480:
1.409 foxr 8481: one of the variables
8482: lonCertificateDirectory, lonnetCertificateAuthority, or lonnetCertificate
8483: undefined or incorrect
8484:
8485: =item Permission error:
8486:
8487: The directory pointed to by lonCertificateDirectory is not readable by lond
8488:
8489: =item Permission error:
8490:
8491: Files in the directory pointed to by lonCertificateDirectory are not readable by lond.
8492:
8493: =item Installation error:
8494:
8495: Either the certificate authority file or the certificate have not
8496: been installed in lonCertificateDirectory.
8497:
8498: =item (Red) CRITICAL SSL Socket promotion failed: <err>
8499:
8500: The promotion of the connection from plaintext to SSL failed
8501: <err> is the reason for the failure. There are two
8502: system calls involved in the promotion (one of which failed),
8503: a dup to produce
8504: a second fd on the raw socket over which the encrypted data
8505: will flow and IO::SOcket::SSL->new_from_fd which creates
8506: the SSL connection on the duped fd.
8507:
8508: =item (Blue) WARNING client did not respond to challenge
8509:
8510: This occurs on an insecure (non SSL) connection negotiation request.
8511: lond generates some number from the time, the PID and sends it to
8512: the client. The client must respond by echoing this information back.
8513: If the client does not do so, that's a violation of the challenge
8514: protocols and the connection will be failed.
8515:
8516: =item (Red) No manager table. Nobody can manage!!
8517:
8518: lond has the concept of privileged hosts that
8519: can perform remote management function such
8520: as update the hosts.tab. The manager hosts
8521: are described in the
8522: ~httpd/lonTabs/managers.tab file.
8523: this message is logged if this file is missing.
8524:
8525:
8526: =item (Green) Registering manager <dnsname> as <cluster_name> with <ipaddress>
8527:
8528: Reports the successful parse and registration
8529: of a specific manager.
8530:
8531: =item Green existing host <clustername:dnsname>
8532:
8533: The manager host is already defined in the hosts.tab
8534: the information in that table, rather than the info in the
8535: manager table will be used to determine the manager's ip.
8536:
8537: =item (Red) Unable to craete <filename>
8538:
8539: lond has been asked to create new versions of an administrative
8540: file (by a manager). When this is done, the new file is created
8541: in a temp file and then renamed into place so that there are always
8542: usable administrative files, even if the update fails. This failure
8543: message means that the temp file could not be created.
8544: The update is abandoned, and the old file is available for use.
8545:
8546: =item (Green) CopyFile from <oldname> to <newname> failed
8547:
8548: In an update of administrative files, the copy of the existing file to a
8549: backup file failed. The installation of the new file may still succeed,
8550: but there will not be a back up file to rever to (this should probably
8551: be yellow).
8552:
8553: =item (Green) Pushfile: backed up <oldname> to <newname>
8554:
8555: See above, the backup of the old administrative file succeeded.
8556:
8557: =item (Red) Pushfile: Unable to install <filename> <reason>
8558:
8559: The new administrative file could not be installed. In this case,
8560: the old administrative file is still in use.
8561:
8562: =item (Green) Installed new < filename>.
8563:
8564: The new administrative file was successfullly installed.
8565:
8566: =item (Red) Reinitializing lond pid=<pid>
8567:
8568: The lonc child process <pid> will be sent a USR2
8569: signal.
8570:
8571: =item (Red) Reinitializing self
8572:
8573: We've been asked to re-read our administrative files,and
8574: are doing so.
8575:
8576: =item (Yellow) error:Invalid process identifier <ident>
8577:
8578: A reinit command was received, but the target part of the
8579: command was not valid. It must be either
8580: 'lond' or 'lonc' but was <ident>
8581:
8582: =item (Green) isValideditCommand checking: Command = <command> Key = <key> newline = <newline>
8583:
8584: Checking to see if lond has been handed a valid edit
8585: command. It is possible the edit command is not valid
8586: in that case there are no log messages to indicate that.
8587:
8588: =item Result of password change for <username> pwchange_success
8589:
8590: The password for <username> was
8591: successfully changed.
8592:
8593: =item Unable to open <user> passwd to change password
8594:
8595: Could not rewrite the
8596: internal password file for a user
8597:
8598: =item Result of password change for <user> : <result>
1.490 droeschl 8599:
1.409 foxr 8600: A unix password change for <user> was attempted
8601: and the pipe returned <result>
8602:
8603: =item LWP GET: <message> for <fname> (<remoteurl>)
8604:
8605: The lightweight process fetch for a resource failed
8606: with <message> the local filename that should
8607: have existed/been created was <fname> the
8608: corresponding URI: <remoteurl> This is emitted in several
8609: places.
8610:
8611: =item Unable to move <transname> to <destname>
8612:
8613: From fetch_user_file_handler - the user file was replicated but could not
8614: be mv'd to its final location.
8615:
8616: =item Looking for <domain> <username>
8617:
8618: From user_has_session_handler - This should be a Debug call instead
8619: it indicates lond is about to check whether the specified user has a
8620: session active on the specified domain on the local host.
8621:
8622: =item Client <ip> (<name>) hanging up: <input>
8623:
8624: lond has been asked to exit by its client. The <ip> and <name> identify the
8625: client systemand <input> is the full exit command sent to the server.
8626:
8627: =item Red CRITICAL: ABNORMAL EXIT. child <pid> for server <hostname> died through a crass with this error->[<message>].
1.490 droeschl 8628:
1.409 foxr 8629: A lond child terminated. NOte that this termination can also occur when the
8630: child receives the QUIT or DIE signals. <pid> is the process id of the child,
8631: <hostname> the host lond is working for, and <message> the reason the child died
8632: to the best of our ability to get it (I would guess that any numeric value
8633: represents and errno value). This is immediately followed by
8634:
8635: =item Famous last words: Catching exception - <log>
8636:
8637: Where log is some recent information about the state of the child.
8638:
8639: =item Red CRITICAL: TIME OUT <pid>
8640:
8641: Some timeout occured for server <pid>. THis is normally a timeout on an LWP
8642: doing an HTTP::GET.
8643:
8644: =item child <pid> died
8645:
8646: The reaper caught a SIGCHILD for the lond child process <pid>
8647: This should be modified to also display the IP of the dying child
8648: $children{$pid}
8649:
8650: =item Unknown child 0 died
8651: A child died but the wait for it returned a pid of zero which really should not
8652: ever happen.
8653:
8654: =item Child <which> - <pid> looks like we missed it's death
8655:
8656: When a sigchild is received, the reaper process checks all children to see if they are
8657: alive. If children are dying quite quickly, the lack of signal queuing can mean
8658: that a signal hearalds the death of more than one child. If so this message indicates
8659: which other one died. <which> is the ip of a dead child
8660:
8661: =item Free socket: <shutdownretval>
8662:
8663: The HUNTSMAN sub was called due to a SIGINT in a child process. The socket is being shutdown.
8664: for whatever reason, <shutdownretval> is printed but in fact shutdown() is not documented
8665: to return anything. This is followed by:
8666:
8667: =item Red CRITICAL: Shutting down
8668:
8669: Just prior to exit.
8670:
8671: =item Free socket: <shutdownretval>
8672:
8673: The HUPSMAN sub was called due to a SIGHUP. all children get killsed, and lond execs itself.
8674: This is followed by:
8675:
8676: =item (Red) CRITICAL: Restarting
8677:
8678: lond is about to exec itself to restart.
8679:
8680: =item (Blue) Updating connections
8681:
8682: (In response to a USR2). All the children (except the one for localhost)
8683: are about to be killed, the hosts tab reread, and Apache reloaded via apachereload.
8684:
8685: =item (Blue) UpdateHosts killing child <pid> for ip <ip>
8686:
8687: Due to USR2 as above.
8688:
8689: =item (Green) keeping child for ip <ip> (pid = <pid>)
8690:
8691: In response to USR2 as above, the child indicated is not being restarted because
8692: it's assumed that we'll always need a child for the localhost.
8693:
8694:
8695: =item Going to check on the children
8696:
8697: Parent is about to check on the health of the child processes.
8698: Note that this is in response to a USR1 sent to the parent lond.
8699: there may be one or more of the next two messages:
8700:
8701: =item <pid> is dead
8702:
8703: A child that we have in our child hash as alive has evidently died.
8704:
8705: =item Child <pid> did not respond
8706:
8707: In the health check the child <pid> did not update/produce a pid_.txt
8708: file when sent it's USR1 signal. That process is killed with a 9 signal, as it's
8709: assumed to be hung in some un-fixable way.
8710:
8711: =item Finished checking children
1.490 droeschl 8712:
1.409 foxr 8713: Master processs's USR1 processing is cojmplete.
8714:
8715: =item (Red) CRITICAL: ------- Starting ------
8716:
8717: (There are more '-'s on either side). Lond has forked itself off to
8718: form a new session and is about to start actual initialization.
8719:
8720: =item (Green) Attempting to start child (<client>)
8721:
8722: Started a new child process for <client>. Client is IO::Socket object
8723: connected to the child. This was as a result of a TCP/IP connection from a client.
8724:
8725: =item Unable to determine who caller was, getpeername returned nothing
1.490 droeschl 8726:
1.409 foxr 8727: In child process initialization. either getpeername returned undef or
8728: a zero sized object was returned. Processing continues, but in my opinion,
8729: this should be cause for the child to exit.
8730:
8731: =item Unable to determine clientip
8732:
8733: In child process initialization. The peer address from getpeername was not defined.
8734: The client address is stored as "Unavailable" and processing continues.
8735:
8736: =item (Yellow) INFO: Connection <ip> <name> connection type = <type>
1.490 droeschl 8737:
1.409 foxr 8738: In child initialization. A good connectionw as received from <ip>.
8739:
8740: =over 2
8741:
8742: =item <name>
8743:
8744: is the name of the client from hosts.tab.
8745:
8746: =item <type>
8747:
8748: Is the connection type which is either
8749:
8750: =over 2
8751:
8752: =item manager
8753:
8754: The connection is from a manager node, not in hosts.tab
8755:
8756: =item client
8757:
8758: the connection is from a non-manager in the hosts.tab
8759:
8760: =item both
8761:
8762: The connection is from a manager in the hosts.tab.
8763:
8764: =back
8765:
8766: =back
8767:
8768: =item (Blue) Certificates not installed -- trying insecure auth
8769:
8770: One of the certificate file, key file or
8771: certificate authority file could not be found for a client attempting
8772: SSL connection intiation. COnnection will be attemptied in in-secure mode.
8773: (this would be a system with an up to date lond that has not gotten a
8774: certificate from us).
8775:
8776: =item (Green) Successful local authentication
8777:
8778: A local connection successfully negotiated the encryption key.
8779: In this case the IDEA key is in a file (that is hopefully well protected).
8780:
8781: =item (Green) Successful ssl authentication with <client>
8782:
8783: The client (<client> is the peer's name in hosts.tab), has successfully
8784: negotiated an SSL connection with this child process.
8785:
8786: =item (Green) Successful insecure authentication with <client>
1.490 droeschl 8787:
1.409 foxr 8788:
8789: The client has successfully negotiated an insecure connection withthe child process.
8790:
8791: =item (Yellow) Attempted insecure connection disallowed
8792:
8793: The client attempted and failed to successfully negotiate a successful insecure
8794: connection. This can happen either because the variable londAllowInsecure is false
8795: or undefined, or becuse the child did not successfully echo back the challenge
8796: string.
8797:
8798:
8799: =back
8800:
1.441 raeburn 8801: =back
8802:
1.409 foxr 8803:
8804: =cut
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