Annotation of loncom/lond, revision 1.149
1.1 albertel 1: #!/usr/bin/perl
2: # The LearningOnline Network
3: # lond "LON Daemon" Server (port "LOND" 5663)
1.60 www 4: #
1.149 ! foxr 5: # $Id: lond,v 1.148 2003/09/29 10:09:18 foxr 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
13: # the Free Software Foundation; either version 2 of the License, or
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
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
27: # http://www.lon-capa.org/
28: #
1.1 albertel 29: # 5/26/99,6/4,6/10,6/11,6/14,6/15,6/26,6/28,6/30,
1.2 www 30: # 7/8,7/9,7/10,7/12,7/17,7/19,9/21,
1.6 www 31: # 10/7,10/8,10/9,10/11,10/13,10/15,11/4,11/16,
1.11 www 32: # 12/7,12/15,01/06,01/11,01/12,01/14,2/8,
1.12 harris41 33: # 03/07,05/31 Gerd Kortemeyer
1.20 www 34: # 06/29,06/30,07/14,07/15,07/17,07/20,07/25,09/18 Gerd Kortemeyer
1.34 www 35: # 12/05,12/13,12/29 Gerd Kortemeyer
1.61 harris41 36: # YEAR=2001
1.36 www 37: # 02/12 Gerd Kortemeyer
1.41 www 38: # 03/24 Gerd Kortemeyer
1.51 www 39: # 05/11,05/28,08/30 Gerd Kortemeyer
1.59 www 40: # 11/26,11/27 Gerd Kortemeyer
1.62 www 41: # 12/22 Gerd Kortemeyer
1.63 www 42: # YEAR=2002
1.65 www 43: # 01/20/02,02/05 Gerd Kortemeyer
1.71 www 44: # 02/05 Guy Albertelli
45: # 02/12 Gerd Kortemeyer
1.73 www 46: # 02/19 Matthew Hall
47: # 02/25 Gerd Kortemeyer
1.106 foxr 48: # 01/xx/2003 Ron Fox.. Remove preforking. This makes the general daemon
49: # logic simpler (and there were problems maintaining the preforked
50: # population). Since the time averaged connection rate is close to zero
51: # because lonc's purpose is to maintain near continuous connnections,
52: # preforking is not really needed.
1.135 foxr 53: # 08/xx/2003 Ron Fox: Add management requests. Management requests
54: # will be validated via a call to ValidateManager. At present, this
55: # is done by simple host verification. In the future we can modify
56: # this function to do a certificate check.
57: # Management functions supported include:
58: # - pushing /home/httpd/lonTabs/hosts.tab
59: # - pushing /home/httpd/lonTabs/domain.tab
1.141 foxr 60: # 09/08/2003 Ron Fox: Told lond to take care of change logging so we
61: # don't have to remember it:
1.142 www 62: # $Log: lond,v $
1.149 ! foxr 63: # Revision 1.148 2003/09/29 10:09:18 foxr
! 64: # Put in logic to reinit lond itself (except for apache reload). I don't believe
! 65: # this logic works correctly yet, however lond still does everything it used to doso I'll do the commit anyway.
! 66: #
1.148 foxr 67: # Revision 1.147 2003/09/23 11:23:31 foxr
68: # Comlplete implementation of reinit functionality. Must still implement
69: # the actual initialization functionality, but the process can now
70: # receive the request and either invoke the appropriate internal function or
71: # signal the correct lonc.
72: #
1.147 foxr 73: # Revision 1.146 2003/09/16 10:28:14 foxr
74: # ReinitProcess - decode the process selector and produce the associated pid
75: # filename. Note: While it is possible to test that valid process selectors are
76: # handled properly I am not able to test that invalid process selectors produce
77: # the appropriate error as lonManage also blocks the use of invalid process selectors.
78: #
1.146 foxr 79: # Revision 1.145 2003/09/16 10:13:20 foxr
80: # Added ReinitProcess function to oversee the parsing and processing of the
81: # reinit:<process> client request.
82: #
1.145 foxr 83: # Revision 1.144 2003/09/16 09:47:01 foxr
84: # Added skeletal support for SIGUSR2 (update hosts.tab)
85: #
1.144 foxr 86: # Revision 1.143 2003/09/15 10:03:52 foxr
87: # Completed and tested code for pushfile.
88: #
1.143 foxr 89: # Revision 1.142 2003/09/09 20:47:46 www
90: # Permanently store chatroom entries in chatroom.log
91: #
1.142 www 92: # Revision 1.141 2003/09/08 10:32:07 foxr
93: # Added PushFile sub This sub oversees the push of a new configuration table file
94: # Currently supported files are:
95: # - hosts.tab (transaction pushfile:hosts:contents)
96: # - domain.tab (transaction pushfile:domain:contents)
97: #
1.141 foxr 98:
1.54 harris41 99:
1.134 albertel 100: use strict;
1.80 harris41 101: use lib '/home/httpd/lib/perl/';
102: use LONCAPA::Configuration;
103:
1.1 albertel 104: use IO::Socket;
105: use IO::File;
1.126 albertel 106: #use Apache::File;
1.1 albertel 107: use Symbol;
108: use POSIX;
109: use Crypt::IDEA;
110: use LWP::UserAgent();
1.3 www 111: use GDBM_File;
112: use Authen::Krb4;
1.91 albertel 113: use Authen::Krb5;
1.49 albertel 114: use lib '/home/httpd/lib/perl/';
115: use localauth;
1.143 foxr 116: use File::Copy;
1.1 albertel 117:
1.77 foxr 118: my $DEBUG = 0; # Non zero to enable debug log entries.
119:
1.57 www 120: my $status='';
121: my $lastlog='';
122:
1.149 ! foxr 123: my $VERSION='$Revision: 1.148 $'; #' stupid emacs
1.121 albertel 124: my $remoteVERSION;
1.115 albertel 125: my $currenthostid;
126: my $currentdomainid;
1.134 albertel 127:
128: my $client;
1.140 foxr 129: my $clientip;
130:
1.134 albertel 131: my $server;
132: my $thisserver;
133:
134: my %hostid;
135: my %hostdom;
136: my %hostip;
1.141 foxr 137: my %perlvar; # Will have the apache conf defined perl vars.
1.134 albertel 138:
1.96 foxr 139: #
140: # The array below are password error strings."
141: #
1.97 foxr 142: my $lastpwderror = 13; # Largest error number from lcpasswd.
1.96 foxr 143: my @passwderrors = ("ok",
144: "lcpasswd must be run as user 'www'",
145: "lcpasswd got incorrect number of arguments",
146: "lcpasswd did not get the right nubmer of input text lines",
147: "lcpasswd too many simultaneous pwd changes in progress",
148: "lcpasswd User does not exist.",
149: "lcpasswd Incorrect current passwd",
150: "lcpasswd Unable to su to root.",
151: "lcpasswd Cannot set new passwd.",
152: "lcpasswd Username has invalid characters",
1.97 foxr 153: "lcpasswd Invalid characters in password",
154: "11", "12",
155: "lcpasswd Password mismatch");
156:
157:
158: # The array below are lcuseradd error strings.:
159:
160: my $lastadderror = 13;
161: my @adderrors = ("ok",
162: "User ID mismatch, lcuseradd must run as user www",
163: "lcuseradd Incorrect number of command line parameters must be 3",
164: "lcuseradd Incorrect number of stdinput lines, must be 3",
165: "lcuseradd Too many other simultaneous pwd changes in progress",
166: "lcuseradd User does not exist",
167: "lcuseradd Unabel to mak ewww member of users's group",
168: "lcuseradd Unable to su to root",
169: "lcuseradd Unable to set password",
170: "lcuseradd Usrname has invbalid charcters",
171: "lcuseradd Password has an invalid character",
172: "lcuseradd User already exists",
173: "lcuseradd Could not add user.",
174: "lcuseradd Password mismatch");
175:
1.96 foxr 176:
177: #
1.140 foxr 178: # GetCertificate: Given a transaction that requires a certificate,
179: # this function will extract the certificate from the transaction
180: # request. Note that at this point, the only concept of a certificate
181: # is the hostname to which we are connected.
182: #
183: # Parameter:
184: # request - The request sent by our client (this parameterization may
185: # need to change when we really use a certificate granting
186: # authority.
187: #
188: sub GetCertificate {
189: my $request = shift;
190:
191: return $clientip;
192: }
193:
194:
195: #
196: # ValidManager: Determines if a given certificate represents a valid manager.
197: # in this primitive implementation, the 'certificate' is
198: # just the connecting loncapa client name. This is checked
199: # against a valid client list in the configuration.
200: #
201: #
202: sub ValidManager {
203: my $certificate = shift;
204:
205: my $hostentry = $hostid{$certificate};
206: if ($hostentry ne undef) {
207: &logthis('<font color="yellow">Authenticating manager'.
208: " $hostentry</font>");
209: return 1;
210: } else {
211: &logthis('<font color="red"> Failed manager authentication '.
212: "$certificate </font>");
213: }
214: }
215: #
1.143 foxr 216: # CopyFile: Called as part of the process of installing a
217: # new configuration file. This function copies an existing
218: # file to a backup file.
219: # Parameters:
220: # oldfile - Name of the file to backup.
221: # newfile - Name of the backup file.
222: # Return:
223: # 0 - Failure (errno has failure reason).
224: # 1 - Success.
225: #
226: sub CopyFile {
227: my $oldfile = shift;
228: my $newfile = shift;
229:
230: # The file must exist:
231:
232: if(-e $oldfile) {
233:
234: # Read the old file.
235:
236: my $oldfh = IO::File->new("< $oldfile");
237: if(!$oldfh) {
238: return 0;
239: }
240: my @contents = <$oldfh>; # Suck in the entire file.
241:
242: # write the backup file:
243:
244: my $newfh = IO::File->new("> $newfile");
245: if(!(defined $newfh)){
246: return 0;
247: }
248: my $lines = scalar @contents;
249: for (my $i =0; $i < $lines; $i++) {
250: print $newfh ($contents[$i]);
251: }
252:
253: $oldfh->close;
254: $newfh->close;
255:
256: chmod(0660, $newfile);
257:
258: return 1;
259:
260: } else {
261: return 0;
262: }
263: }
264:
265: #
266: # InstallFile: Called to install an administrative file:
267: # - The file is created with <name>.tmp
268: # - The <name>.tmp file is then mv'd to <name>
269: # This lugubrious procedure is done to ensure that we are never without
270: # a valid, even if dated, version of the file regardless of who crashes
271: # and when the crash occurs.
272: #
273: # Parameters:
274: # Name of the file
275: # File Contents.
276: # Return:
277: # nonzero - success.
278: # 0 - failure and $! has an errno.
279: #
280: sub InstallFile {
281: my $Filename = shift;
282: my $Contents = shift;
283: my $TempFile = $Filename.".tmp";
284:
285: # Open the file for write:
286:
287: my $fh = IO::File->new("> $TempFile"); # Write to temp.
288: if(!(defined $fh)) {
289: &logthis('<font color="red"> Unable to create '.$TempFile."</font>");
290: return 0;
291: }
292: # write the contents of the file:
293:
294: print $fh ($Contents);
295: $fh->close; # In case we ever have a filesystem w. locking
296:
297: chmod(0660, $TempFile);
298:
299: # Now we can move install the file in position.
300:
301: move($TempFile, $Filename);
302:
303: return 1;
304: }
305:
306: #
1.141 foxr 307: # PushFile: Called to do an administrative push of a file.
308: # - Ensure the file being pushed is one we support.
309: # - Backup the old file to <filename.saved>
310: # - Separate the contents of the new file out from the
311: # rest of the request.
312: # - Write the new file.
313: # Parameter:
314: # Request - The entire user request. This consists of a : separated
315: # string pushfile:tablename:contents.
316: # NOTE: The contents may have :'s in it as well making things a bit
317: # more interesting... but not much.
318: # Returns:
319: # String to send to client ("ok" or "refused" if bad file).
320: #
321: sub PushFile {
322: my $request = shift;
323: my ($command, $filename, $contents) = split(":", $request, 3);
324:
325: # At this point in time, pushes for only the following tables are
326: # supported:
327: # hosts.tab ($filename eq host).
328: # domain.tab ($filename eq domain).
329: # Construct the destination filename or reject the request.
330: #
331: # lonManage is supposed to ensure this, however this session could be
332: # part of some elaborate spoof that managed somehow to authenticate.
333: #
334:
335: my $tablefile = $perlvar{'lonTabDir'}.'/'; # need to precede with dir.
336: if ($filename eq "host") {
337: $tablefile .= "hosts.tab";
338: } elsif ($filename eq "domain") {
339: $tablefile .= "domain.tab";
340: } else {
341: return "refused";
342: }
343: #
344: # >copy< the old table to the backup table
345: # don't rename in case system crashes/reboots etc. in the time
346: # window between a rename and write.
347: #
348: my $backupfile = $tablefile;
349: $backupfile =~ s/\.tab$/.old/;
1.143 foxr 350: if(!CopyFile($tablefile, $backupfile)) {
351: &logthis('<font color="green"> CopyFile from '.$tablefile." to ".$backupfile." failed </font>");
352: return "error:$!";
353: }
1.141 foxr 354: &logthis('<font color="green"> Pushfile: backed up '
355: .$tablefile." to $backupfile</font>");
356:
357: # Install the new file:
358:
1.143 foxr 359: if(!InstallFile($tablefile, $contents)) {
360: &logthis('<font color="red"> Pushfile: unable to install '
1.145 foxr 361: .$tablefile." $! </font>");
1.143 foxr 362: return "error:$!";
363: }
364: else {
365: &logthis('<font color="green"> Installed new '.$tablefile
366: ."</font>");
367:
368: }
369:
1.141 foxr 370:
371: # Indicate success:
372:
373: return "ok";
374:
375: }
1.145 foxr 376:
377: #
378: # Called to re-init either lonc or lond.
379: #
380: # Parameters:
381: # request - The full request by the client. This is of the form
382: # reinit:<process>
383: # where <process> is allowed to be either of
384: # lonc or lond
385: #
386: # Returns:
387: # The string to be sent back to the client either:
388: # ok - Everything worked just fine.
389: # error:why - There was a failure and why describes the reason.
390: #
391: #
392: sub ReinitProcess {
393: my $request = shift;
394:
1.146 foxr 395:
396: # separate the request (reinit) from the process identifier and
397: # validate it producing the name of the .pid file for the process.
398: #
399: #
400: my ($junk, $process) = split(":", $request);
1.147 foxr 401: my $processpidfile = $perlvar{'lonDaemons'}.'/logs/';
1.146 foxr 402: if($process eq 'lonc') {
403: $processpidfile = $processpidfile."lonc.pid";
1.147 foxr 404: if (!open(PIDFILE, "< $processpidfile")) {
405: return "error:Open failed for $processpidfile";
406: }
407: my $loncpid = <PIDFILE>;
408: close(PIDFILE);
409: logthis('<font color="red"> Reinitializing lonc pid='.$loncpid
410: ."</font>");
411: kill("USR2", $loncpid);
1.146 foxr 412: } elsif ($process eq 'lond') {
1.147 foxr 413: logthis('<font color="red"> Reinitializing self (lond) </font>');
414: &UpdateHosts; # Lond is us!!
1.146 foxr 415: } else {
416: &logthis('<font color="yellow" Invalid reinit request for '.$process
417: ."</font>");
418: return "error:Invalid process identifier $process";
419: }
1.145 foxr 420: return 'ok';
421: }
422:
1.141 foxr 423: #
1.96 foxr 424: # Convert an error return code from lcpasswd to a string value.
425: #
426: sub lcpasswdstrerror {
427: my $ErrorCode = shift;
1.97 foxr 428: if(($ErrorCode < 0) || ($ErrorCode > $lastpwderror)) {
1.96 foxr 429: return "lcpasswd Unrecognized error return value ".$ErrorCode;
430: } else {
1.98 foxr 431: return $passwderrors[$ErrorCode];
1.96 foxr 432: }
433: }
434:
1.97 foxr 435: #
436: # Convert an error return code from lcuseradd to a string value:
437: #
438: sub lcuseraddstrerror {
439: my $ErrorCode = shift;
440: if(($ErrorCode < 0) || ($ErrorCode > $lastadderror)) {
441: return "lcuseradd - Unrecognized error code: ".$ErrorCode;
442: } else {
1.98 foxr 443: return $adderrors[$ErrorCode];
1.97 foxr 444: }
445: }
446:
1.23 harris41 447: # grabs exception and records it to log before exiting
448: sub catchexception {
1.27 albertel 449: my ($error)=@_;
1.25 www 450: $SIG{'QUIT'}='DEFAULT';
451: $SIG{__DIE__}='DEFAULT';
1.23 harris41 452: &logthis("<font color=red>CRITICAL: "
1.134 albertel 453: ."ABNORMAL EXIT. Child $$ for server $thisserver died through "
1.27 albertel 454: ."a crash with this error msg->[$error]</font>");
1.57 www 455: &logthis('Famous last words: '.$status.' - '.$lastlog);
1.27 albertel 456: if ($client) { print $client "error: $error\n"; }
1.59 www 457: $server->close();
1.27 albertel 458: die($error);
1.23 harris41 459: }
460:
1.63 www 461: sub timeout {
462: &logthis("<font color=ref>CRITICAL: TIME OUT ".$$."</font>");
463: &catchexception('Timeout');
464: }
1.22 harris41 465: # -------------------------------- Set signal handlers to record abnormal exits
466:
467: $SIG{'QUIT'}=\&catchexception;
468: $SIG{__DIE__}=\&catchexception;
469:
1.81 matthew 470: # ---------------------------------- Read loncapa_apache.conf and loncapa.conf
1.95 harris41 471: &status("Read loncapa.conf and loncapa_apache.conf");
472: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
1.141 foxr 473: %perlvar=%{$perlvarref};
1.80 harris41 474: undef $perlvarref;
1.19 www 475:
1.35 harris41 476: # ----------------------------- Make sure this process is running from user=www
477: my $wwwid=getpwnam('www');
478: if ($wwwid!=$<) {
1.134 albertel 479: my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
480: my $subj="LON: $currenthostid User ID mismatch";
1.37 harris41 481: system("echo 'User ID mismatch. lond must be run as user www.' |\
1.35 harris41 482: mailto $emailto -s '$subj' > /dev/null");
483: exit 1;
484: }
485:
1.19 www 486: # --------------------------------------------- Check if other instance running
487:
488: my $pidfile="$perlvar{'lonDaemons'}/logs/lond.pid";
489:
490: if (-e $pidfile) {
491: my $lfh=IO::File->new("$pidfile");
492: my $pide=<$lfh>;
493: chomp($pide);
1.29 harris41 494: if (kill 0 => $pide) { die "already running"; }
1.19 www 495: }
1.1 albertel 496:
497: # ------------------------------------------------------------- Read hosts file
498:
499:
500:
501: # establish SERVER socket, bind and listen.
502: $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},
503: Type => SOCK_STREAM,
504: Proto => 'tcp',
505: Reuse => 1,
506: Listen => 10 )
1.29 harris41 507: or die "making socket: $@\n";
1.1 albertel 508:
509: # --------------------------------------------------------- Do global variables
510:
511: # global variables
512:
1.134 albertel 513: my %children = (); # keys are current child process IDs
514: my $children = 0; # current number of children
1.1 albertel 515:
516: sub REAPER { # takes care of dead children
517: $SIG{CHLD} = \&REAPER;
518: my $pid = wait;
1.67 albertel 519: if (defined($children{$pid})) {
520: &logthis("Child $pid died");
521: $children --;
522: delete $children{$pid};
523: } else {
524: &logthis("Unknown Child $pid died");
525: }
1.1 albertel 526: }
527:
528: sub HUNTSMAN { # signal handler for SIGINT
529: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
530: kill 'INT' => keys %children;
1.59 www 531: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.1 albertel 532: my $execdir=$perlvar{'lonDaemons'};
533: unlink("$execdir/logs/lond.pid");
1.9 www 534: &logthis("<font color=red>CRITICAL: Shutting down</font>");
1.1 albertel 535: exit; # clean up with dignity
536: }
537:
538: sub HUPSMAN { # signal handler for SIGHUP
539: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
540: kill 'INT' => keys %children;
1.59 www 541: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.9 www 542: &logthis("<font color=red>CRITICAL: Restarting</font>");
1.134 albertel 543: my $execdir=$perlvar{'lonDaemons'};
1.30 harris41 544: unlink("$execdir/logs/lond.pid");
1.1 albertel 545: exec("$execdir/lond"); # here we go again
546: }
547:
1.144 foxr 548: #
1.148 foxr 549: # Kill off hashes that describe the host table prior to re-reading it.
550: # Hashes affected are:
551: # %hostid, %hostdom %hostip
552: #
553: sub KillHostHashes {
554: foreach my $key (keys %hostid) {
555: delete $hostid{$key};
556: }
557: foreach my $key (keys %hostdom) {
558: delete $hostdom{$key};
559: }
560: foreach my $key (keys %hostip) {
561: delete $hostip{$key};
562: }
563: }
564: #
565: # Read in the host table from file and distribute it into the various hashes:
566: #
567: # - %hostid - Indexed by IP, the loncapa hostname.
568: # - %hostdom - Indexed by loncapa hostname, the domain.
569: # - %hostip - Indexed by hostid, the Ip address of the host.
570: sub ReadHostTable {
571:
572: open (CONFIG,"$perlvar{'lonTabDir'}/hosts.tab") || die "Can't read host file";
573:
574: while (my $configline=<CONFIG>) {
575: my ($id,$domain,$role,$name,$ip)=split(/:/,$configline);
576: chomp($ip); $ip=~s/\D+$//;
577: $hostid{$ip}=$id;
578: $hostdom{$id}=$domain;
579: $hostip{$id}=$ip;
580: if ($id eq $perlvar{'lonHostID'}) { $thisserver=$name; }
581: }
582: close(CONFIG);
583: }
584: #
585: # Reload the Apache daemon's state.
586: #
587: sub ReloadApache {
588: }
589:
590: #
1.144 foxr 591: # Called in response to a USR2 signal.
592: # - Reread hosts.tab
593: # - All children connected to hosts that were removed from hosts.tab
594: # are killed via SIGINT
595: # - All children connected to previously existing hosts are sent SIGUSR1
596: # - Our internal hosts hash is updated to reflect the new contents of
597: # hosts.tab causing connections from hosts added to hosts.tab to
598: # now be honored.
599: #
600: sub UpdateHosts {
1.147 foxr 601: logthis('<font color="blue"> Updating connections </font>');
1.148 foxr 602: #
603: # The %children hash has the set of IP's we currently have children
604: # on. These need to be matched against records in the hosts.tab
605: # Any ip's no longer in the table get killed off they correspond to
606: # either dropped or changed hosts. Note that the re-read of the table
607: # will take care of new and changed hosts as connections come into being.
608:
609:
610: KillHostHashes;
611: ReadHostTable;
612:
613: foreach my $child (keys %children) {
614: my $childip = $children{$child};
615: if(!$hostid{$childip}) {
1.149 ! foxr 616: logthis('<font color="blue"> UpdateHosts killing child '
! 617: ." $child for ip $childip </font>");
1.148 foxr 618: kill('INT', $child);
1.149 ! foxr 619: } else {
! 620: logthis('<font color="green"> keeping child for ip '
! 621: ." $childip (pid=$child) </font>");
1.148 foxr 622: }
623: }
624: ReloadApache;
1.144 foxr 625: }
626:
1.148 foxr 627:
1.57 www 628: sub checkchildren {
629: &initnewstatus();
630: &logstatus();
631: &logthis('Going to check on the children');
1.134 albertel 632: my $docdir=$perlvar{'lonDocRoot'};
1.61 harris41 633: foreach (sort keys %children) {
1.57 www 634: sleep 1;
635: unless (kill 'USR1' => $_) {
636: &logthis ('Child '.$_.' is dead');
637: &logstatus($$.' is dead');
638: }
1.61 harris41 639: }
1.63 www 640: sleep 5;
1.113 albertel 641: $SIG{ALRM} = sub { die "timeout" };
642: $SIG{__DIE__} = 'DEFAULT';
1.63 www 643: foreach (sort keys %children) {
644: unless (-e "$docdir/lon-status/londchld/$_.txt") {
1.113 albertel 645: eval {
646: alarm(300);
1.63 www 647: &logthis('Child '.$_.' did not respond');
1.67 albertel 648: kill 9 => $_;
1.131 albertel 649: #$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
650: #$subj="LON: $currenthostid killed lond process $_";
651: #my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null`;
652: #$execdir=$perlvar{'lonDaemons'};
653: #$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_`;
1.113 albertel 654: alarm(0);
655: }
1.63 www 656: }
657: }
1.113 albertel 658: $SIG{ALRM} = 'DEFAULT';
659: $SIG{__DIE__} = \&cathcexception;
1.57 www 660: }
661:
1.1 albertel 662: # --------------------------------------------------------------------- Logging
663:
664: sub logthis {
665: my $message=shift;
666: my $execdir=$perlvar{'lonDaemons'};
667: my $fh=IO::File->new(">>$execdir/logs/lond.log");
668: my $now=time;
669: my $local=localtime($now);
1.58 www 670: $lastlog=$local.': '.$message;
1.1 albertel 671: print $fh "$local ($$): $message\n";
672: }
673:
1.77 foxr 674: # ------------------------- Conditional log if $DEBUG true.
675: sub Debug {
676: my $message = shift;
677: if($DEBUG) {
678: &logthis($message);
679: }
680: }
1.57 www 681: # ------------------------------------------------------------------ Log status
682:
683: sub logstatus {
684: my $docdir=$perlvar{'lonDocRoot'};
1.63 www 685: {
1.57 www 686: my $fh=IO::File->new(">>$docdir/lon-status/londstatus.txt");
1.115 albertel 687: print $fh $$."\t".$currenthostid."\t".$status."\t".$lastlog."\n";
1.63 www 688: $fh->close();
689: }
690: {
691: my $fh=IO::File->new(">$docdir/lon-status/londchld/$$.txt");
692: print $fh $status."\n".$lastlog."\n".time;
693: $fh->close();
694: }
1.57 www 695: }
696:
697: sub initnewstatus {
698: my $docdir=$perlvar{'lonDocRoot'};
699: my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt");
700: my $now=time;
701: my $local=localtime($now);
702: print $fh "LOND status $local - parent $$\n\n";
1.64 www 703: opendir(DIR,"$docdir/lon-status/londchld");
1.134 albertel 704: while (my $filename=readdir(DIR)) {
1.64 www 705: unlink("$docdir/lon-status/londchld/$filename");
706: }
707: closedir(DIR);
1.57 www 708: }
709:
710: # -------------------------------------------------------------- Status setting
711:
712: sub status {
713: my $what=shift;
714: my $now=time;
715: my $local=localtime($now);
716: $status=$local.': '.$what;
1.103 www 717: $0='lond: '.$what.' '.$local;
1.57 www 718: }
1.11 www 719:
720: # -------------------------------------------------------- Escape Special Chars
721:
722: sub escape {
723: my $str=shift;
724: $str =~ s/(\W)/"%".unpack('H2',$1)/eg;
725: return $str;
726: }
727:
728: # ----------------------------------------------------- Un-Escape Special Chars
729:
730: sub unescape {
731: my $str=shift;
732: $str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
733: return $str;
734: }
735:
1.1 albertel 736: # ----------------------------------------------------------- Send USR1 to lonc
737:
738: sub reconlonc {
739: my $peerfile=shift;
740: &logthis("Trying to reconnect for $peerfile");
741: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
742: if (my $fh=IO::File->new("$loncfile")) {
743: my $loncpid=<$fh>;
744: chomp($loncpid);
745: if (kill 0 => $loncpid) {
746: &logthis("lonc at pid $loncpid responding, sending USR1");
747: kill USR1 => $loncpid;
748: } else {
1.9 www 749: &logthis(
750: "<font color=red>CRITICAL: "
751: ."lonc at pid $loncpid not responding, giving up</font>");
1.1 albertel 752: }
753: } else {
1.9 www 754: &logthis('<font color=red>CRITICAL: lonc not running, giving up</font>');
1.1 albertel 755: }
756: }
757:
758: # -------------------------------------------------- Non-critical communication
1.11 www 759:
1.1 albertel 760: sub subreply {
761: my ($cmd,$server)=@_;
762: my $peerfile="$perlvar{'lonSockDir'}/$server";
763: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
764: Type => SOCK_STREAM,
765: Timeout => 10)
766: or return "con_lost";
767: print $sclient "$cmd\n";
768: my $answer=<$sclient>;
769: chomp($answer);
770: if (!$answer) { $answer="con_lost"; }
771: return $answer;
772: }
773:
774: sub reply {
775: my ($cmd,$server)=@_;
776: my $answer;
1.115 albertel 777: if ($server ne $currenthostid) {
1.1 albertel 778: $answer=subreply($cmd,$server);
779: if ($answer eq 'con_lost') {
780: $answer=subreply("ping",$server);
781: if ($answer ne $server) {
1.115 albertel 782: &logthis("sub reply: answer != server answer is $answer, server is $server");
1.1 albertel 783: &reconlonc("$perlvar{'lonSockDir'}/$server");
784: }
785: $answer=subreply($cmd,$server);
786: }
787: } else {
788: $answer='self_reply';
789: }
790: return $answer;
791: }
792:
1.13 www 793: # -------------------------------------------------------------- Talk to lonsql
794:
1.12 harris41 795: sub sqlreply {
796: my ($cmd)=@_;
797: my $answer=subsqlreply($cmd);
798: if ($answer eq 'con_lost') { $answer=subsqlreply($cmd); }
799: return $answer;
800: }
801:
802: sub subsqlreply {
803: my ($cmd)=@_;
804: my $unixsock="mysqlsock";
805: my $peerfile="$perlvar{'lonSockDir'}/$unixsock";
806: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
807: Type => SOCK_STREAM,
808: Timeout => 10)
809: or return "con_lost";
810: print $sclient "$cmd\n";
811: my $answer=<$sclient>;
812: chomp($answer);
813: if (!$answer) { $answer="con_lost"; }
814: return $answer;
815: }
816:
1.1 albertel 817: # -------------------------------------------- Return path to profile directory
1.11 www 818:
1.1 albertel 819: sub propath {
820: my ($udom,$uname)=@_;
821: $udom=~s/\W//g;
822: $uname=~s/\W//g;
1.16 www 823: my $subdir=$uname.'__';
1.1 albertel 824: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
825: my $proname="$perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
826: return $proname;
827: }
828:
829: # --------------------------------------- Is this the home server of an author?
1.11 www 830:
1.1 albertel 831: sub ishome {
832: my $author=shift;
833: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
834: my ($udom,$uname)=split(/\//,$author);
835: my $proname=propath($udom,$uname);
836: if (-e $proname) {
837: return 'owner';
838: } else {
839: return 'not_owner';
840: }
841: }
842:
843: # ======================================================= Continue main program
844: # ---------------------------------------------------- Fork once and dissociate
845:
1.134 albertel 846: my $fpid=fork;
1.1 albertel 847: exit if $fpid;
1.29 harris41 848: die "Couldn't fork: $!" unless defined ($fpid);
1.1 albertel 849:
1.29 harris41 850: POSIX::setsid() or die "Can't start new session: $!";
1.1 albertel 851:
852: # ------------------------------------------------------- Write our PID on disk
853:
1.134 albertel 854: my $execdir=$perlvar{'lonDaemons'};
1.1 albertel 855: open (PIDSAVE,">$execdir/logs/lond.pid");
856: print PIDSAVE "$$\n";
857: close(PIDSAVE);
1.9 www 858: &logthis("<font color=red>CRITICAL: ---------- Starting ----------</font>");
1.57 www 859: &status('Starting');
1.1 albertel 860:
1.106 foxr 861:
1.1 albertel 862:
863: # ----------------------------------------------------- Install signal handlers
864:
1.57 www 865:
1.1 albertel 866: $SIG{CHLD} = \&REAPER;
867: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
868: $SIG{HUP} = \&HUPSMAN;
1.57 www 869: $SIG{USR1} = \&checkchildren;
1.144 foxr 870: $SIG{USR2} = \&UpdateHosts;
1.106 foxr 871:
1.148 foxr 872: # Read the host hashes:
873:
874: ReadHostTable;
1.106 foxr 875:
876: # --------------------------------------------------------------
877: # Accept connections. When a connection comes in, it is validated
878: # and if good, a child process is created to process transactions
879: # along the connection.
880:
1.1 albertel 881: while (1) {
1.106 foxr 882: $client = $server->accept() or next;
883: make_new_child($client);
1.1 albertel 884: }
885:
886: sub make_new_child {
887: my $pid;
888: my $cipher;
889: my $sigset;
1.106 foxr 890:
891: $client = shift;
1.1 albertel 892: &logthis("Attempting to start child");
893: # block signal for fork
894: $sigset = POSIX::SigSet->new(SIGINT);
895: sigprocmask(SIG_BLOCK, $sigset)
1.29 harris41 896: or die "Can't block SIGINT for fork: $!\n";
1.134 albertel 897:
1.29 harris41 898: die "fork: $!" unless defined ($pid = fork);
1.148 foxr 899:
900: $client->sockopt(SO_KEEPALIVE, 1); # Enable monitoring of
901: # connection liveness.
902:
903: #
904: # Figure out who we're talking to so we can record the peer in
905: # the pid hash.
906: #
907: my $caller = getpeername($client);
908: my ($port,$iaddr)=unpack_sockaddr_in($caller);
909: $clientip=inet_ntoa($iaddr);
1.1 albertel 910:
911: if ($pid) {
912: # Parent records the child's birth and returns.
913: sigprocmask(SIG_UNBLOCK, $sigset)
1.29 harris41 914: or die "Can't unblock SIGINT for fork: $!\n";
1.148 foxr 915: $children{$pid} = $clientip;
1.1 albertel 916: $children++;
1.57 www 917: &status('Started child '.$pid);
1.1 albertel 918: return;
919: } else {
920: # Child can *not* return from this subroutine.
921: $SIG{INT} = 'DEFAULT'; # make SIGINT kill us as it did before
1.126 albertel 922: $SIG{CHLD} = 'DEFAULT'; #make this default so that pwauth returns
923: #don't get intercepted
1.57 www 924: $SIG{USR1}= \&logstatus;
1.63 www 925: $SIG{ALRM}= \&timeout;
1.57 www 926: $lastlog='Forked ';
927: $status='Forked';
928:
1.1 albertel 929: # unblock signals
930: sigprocmask(SIG_UNBLOCK, $sigset)
1.29 harris41 931: or die "Can't unblock SIGINT for fork: $!\n";
1.13 www 932:
1.134 albertel 933: my $tmpsnum=0;
1.91 albertel 934: #---------------------------------------------------- kerberos 5 initialization
935: &Authen::Krb5::init_context();
936: &Authen::Krb5::init_ets();
937:
1.57 www 938: &status('Accepted connection');
1.1 albertel 939: # =============================================================================
940: # do something with the connection
941: # -----------------------------------------------------------------------------
1.148 foxr 942: # see if we know client and check for spoof IP by challenge
943:
1.1 albertel 944: my $clientrec=($hostid{$clientip} ne undef);
1.9 www 945: &logthis(
1.115 albertel 946: "<font color=yellow>INFO: Connection, $clientip ($hostid{$clientip})</font>"
1.51 www 947: );
1.57 www 948: &status("Connecting $clientip ($hostid{$clientip})");
1.2 www 949: my $clientok;
1.1 albertel 950: if ($clientrec) {
1.57 www 951: &status("Waiting for init from $clientip ($hostid{$clientip})");
1.2 www 952: my $remotereq=<$client>;
1.115 albertel 953: $remotereq=~s/[^\w:]//g;
954: if ($remotereq =~ /^init/) {
1.121 albertel 955: &sethost("sethost:$perlvar{'lonHostID'}");
1.2 www 956: my $challenge="$$".time;
957: print $client "$challenge\n";
1.57 www 958: &status(
959: "Waiting for challenge reply from $clientip ($hostid{$clientip})");
1.2 www 960: $remotereq=<$client>;
961: $remotereq=~s/\W//g;
962: if ($challenge eq $remotereq) {
963: $clientok=1;
964: print $client "ok\n";
965: } else {
1.9 www 966: &logthis(
967: "<font color=blue>WARNING: $clientip did not reply challenge</font>");
1.57 www 968: &status('No challenge reply '.$clientip);
1.2 www 969: }
970: } else {
1.9 www 971: &logthis(
972: "<font color=blue>WARNING: "
973: ."$clientip failed to initialize: >$remotereq< </font>");
1.57 www 974: &status('No init '.$clientip);
1.2 www 975: }
976: } else {
1.9 www 977: &logthis(
978: "<font color=blue>WARNING: Unknown client $clientip</font>");
1.57 www 979: &status('Hung up on '.$clientip);
1.2 www 980: }
981: if ($clientok) {
1.1 albertel 982: # ---------------- New known client connecting, could mean machine online again
1.75 foxr 983:
1.115 albertel 984: foreach my $id (keys(%hostip)) {
985: if ($hostip{$id} ne $clientip ||
986: $hostip{$currenthostid} eq $clientip) {
987: # no need to try to do recon's to myself
988: next;
989: }
990: &reconlonc("$perlvar{'lonSockDir'}/$id");
991: }
992: &logthis("<font color=green>Established connection: $hostid{$clientip}</font>");
1.58 www 993: &status('Will listen to '.$hostid{$clientip});
1.1 albertel 994: # ------------------------------------------------------------ Process requests
995: while (my $userinput=<$client>) {
996: chomp($userinput);
1.79 foxr 997: Debug("Request = $userinput\n");
1.57 www 998: &status('Processing '.$hostid{$clientip}.': '.$userinput);
1.1 albertel 999: my $wasenc=0;
1.63 www 1000: alarm(120);
1.1 albertel 1001: # ------------------------------------------------------------ See if encrypted
1002: if ($userinput =~ /^enc/) {
1003: if ($cipher) {
1004: my ($cmd,$cmdlength,$encinput)=split(/:/,$userinput);
1005: $userinput='';
1006: for (my $encidx=0;$encidx<length($encinput);$encidx+=16) {
1007: $userinput.=
1008: $cipher->decrypt(
1009: pack("H16",substr($encinput,$encidx,16))
1010: );
1011: }
1012: $userinput=substr($userinput,0,$cmdlength);
1013: $wasenc=1;
1014: }
1.75 foxr 1015: }
1016:
1.1 albertel 1017: # ------------------------------------------------------------- Normal commands
1018: # ------------------------------------------------------------------------ ping
1019: if ($userinput =~ /^ping/) {
1.115 albertel 1020: print $client "$currenthostid\n";
1.1 albertel 1021: # ------------------------------------------------------------------------ pong
1.137 foxr 1022: }elsif ($userinput =~ /^pong/) {
1.134 albertel 1023: my $reply=&reply("ping",$hostid{$clientip});
1.115 albertel 1024: print $client "$currenthostid:$reply\n";
1.1 albertel 1025: # ------------------------------------------------------------------------ ekey
1026: } elsif ($userinput =~ /^ekey/) {
1027: my $buildkey=time.$$.int(rand 100000);
1028: $buildkey=~tr/1-6/A-F/;
1029: $buildkey=int(rand 100000).$buildkey.int(rand 100000);
1.115 albertel 1030: my $key=$currenthostid.$hostid{$clientip};
1.1 albertel 1031: $key=~tr/a-z/A-Z/;
1032: $key=~tr/G-P/0-9/;
1033: $key=~tr/Q-Z/0-9/;
1034: $key=$key.$buildkey.$key.$buildkey.$key.$buildkey;
1035: $key=substr($key,0,32);
1036: my $cipherkey=pack("H32",$key);
1037: $cipher=new IDEA $cipherkey;
1038: print $client "$buildkey\n";
1039: # ------------------------------------------------------------------------ load
1040: } elsif ($userinput =~ /^load/) {
1041: my $loadavg;
1042: {
1043: my $loadfile=IO::File->new('/proc/loadavg');
1044: $loadavg=<$loadfile>;
1045: }
1046: $loadavg =~ s/\s.*//g;
1.127 albertel 1047: my $loadpercent=100*$loadavg/$perlvar{'lonLoadLim'};
1.1 albertel 1048: print $client "$loadpercent\n";
1.127 albertel 1049: # -------------------------------------------------------------------- userload
1050: } elsif ($userinput =~ /^userload/) {
1051: my $userloadpercent=&userload();
1052: print $client "$userloadpercent\n";
1.137 foxr 1053:
1054: #
1055: # Transactions requiring encryption:
1056: #
1.54 harris41 1057: # ----------------------------------------------------------------- currentauth
1058: } elsif ($userinput =~ /^currentauth/) {
1059: if ($wasenc==1) {
1060: my ($cmd,$udom,$uname)=split(/:/,$userinput);
1.79 foxr 1061: my $result = GetAuthType($udom, $uname);
1.78 foxr 1062: if($result eq "nouser") {
1063: print $client "unknown_user\n";
1064: }
1065: else {
1066: print $client "$result\n"
1067: }
1.54 harris41 1068: } else {
1069: print $client "refused\n";
1070: }
1.137 foxr 1071: #--------------------------------------------------------------------- pushfile
1072: } elsif($userinput =~ /^pushfile/) {
1.140 foxr 1073: if($wasenc == 1) {
1074: my $cert = GetCertificate($userinput);
1075: if(ValidManager($cert)) {
1.141 foxr 1076: my $reply = PushFile($userinput);
1077: print $client "$reply\n";
1.140 foxr 1078: } else {
1079: print $client "refused\n";
1080: }
1081: } else {
1082: print $client "refused\n";
1083: }
1.137 foxr 1084: #--------------------------------------------------------------------- reinit
1085: } elsif($userinput =~ /^reinit/) {
1.140 foxr 1086: if ($wasenc == 1) {
1087: my $cert = GetCertificate($userinput);
1088: if(ValidManager($cert)) {
1.146 foxr 1089: chomp($userinput);
1.145 foxr 1090: my $reply = ReinitProcess($userinput);
1091: print $client "$reply\n";
1.140 foxr 1092: } else {
1093: print $client "refused\n";
1094: }
1095: } else {
1096: print $client "refused\n";
1097: }
1.1 albertel 1098: # ------------------------------------------------------------------------ auth
1099: } elsif ($userinput =~ /^auth/) {
1100: if ($wasenc==1) {
1101: my ($cmd,$udom,$uname,$upass)=split(/:/,$userinput);
1102: chomp($upass);
1.11 www 1103: $upass=unescape($upass);
1.1 albertel 1104: my $proname=propath($udom,$uname);
1105: my $passfilename="$proname/passwd";
1106: if (-e $passfilename) {
1107: my $pf = IO::File->new($passfilename);
1108: my $realpasswd=<$pf>;
1109: chomp($realpasswd);
1.2 www 1110: my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
1111: my $pwdcorrect=0;
1112: if ($howpwd eq 'internal') {
1.99 foxr 1113: &Debug("Internal auth");
1.2 www 1114: $pwdcorrect=
1115: (crypt($upass,$contentpwd) eq $contentpwd);
1116: } elsif ($howpwd eq 'unix') {
1.99 foxr 1117: &Debug("Unix auth");
1118: if((getpwnam($uname))[1] eq "") { #no such user!
1119: $pwdcorrect = 0;
1120: } else {
1121: $contentpwd=(getpwnam($uname))[1];
1122: my $pwauth_path="/usr/local/sbin/pwauth";
1123: unless ($contentpwd eq 'x') {
1124: $pwdcorrect=
1125: (crypt($upass,$contentpwd) eq
1126: $contentpwd);
1127: }
1128:
1.52 harris41 1129: elsif (-e $pwauth_path) {
1130: open PWAUTH, "|$pwauth_path" or
1131: die "Cannot invoke authentication";
1132: print PWAUTH "$uname\n$upass\n";
1133: close PWAUTH;
1134: $pwdcorrect=!$?;
1.99 foxr 1135: }
1.52 harris41 1136: }
1.3 www 1137: } elsif ($howpwd eq 'krb4') {
1.134 albertel 1138: my $null=pack("C",0);
1.104 matthew 1139: unless ($upass=~/$null/) {
1140: my $krb4_error = &Authen::Krb4::get_pw_in_tkt
1141: ($uname,"",$contentpwd,'krbtgt',
1142: $contentpwd,1,$upass);
1143: if (!$krb4_error) {
1144: $pwdcorrect = 1;
1145: } else {
1146: $pwdcorrect=0;
1147: # log error if it is not a bad password
1148: if ($krb4_error != 62) {
1149: &logthis('krb4:'.$uname.','.$contentpwd.','.
1150: &Authen::Krb4::get_err_txt($Authen::Krb4::error));
1151: }
1152: }
1153: }
1.91 albertel 1154: } elsif ($howpwd eq 'krb5') {
1.134 albertel 1155: my $null=pack("C",0);
1.91 albertel 1156: unless ($upass=~/$null/) {
1157: my $krbclient=&Authen::Krb5::parse_name($uname.'@'.$contentpwd);
1158: my $krbservice="krbtgt/".$contentpwd."\@".$contentpwd;
1159: my $krbserver=&Authen::Krb5::parse_name($krbservice);
1160: my $credentials=&Authen::Krb5::cc_default();
1161: $credentials->initialize($krbclient);
1162: my $krbreturn =
1163: &Authen::Krb5::get_in_tkt_with_password(
1164: $krbclient,$krbserver,$upass,$credentials);
1.92 albertel 1165: # unless ($krbreturn) {
1166: # &logthis("Krb5 Error: ".
1167: # &Authen::Krb5::error());
1168: # }
1.91 albertel 1169: $pwdcorrect = ($krbreturn == 1);
1170: } else { $pwdcorrect=0; }
1.50 albertel 1171: } elsif ($howpwd eq 'localauth') {
1.49 albertel 1172: $pwdcorrect=&localauth::localauth($uname,$upass,
1173: $contentpwd);
1174: }
1.2 www 1175: if ($pwdcorrect) {
1.1 albertel 1176: print $client "authorized\n";
1177: } else {
1178: print $client "non_authorized\n";
1179: }
1180: } else {
1181: print $client "unknown_user\n";
1182: }
1183: } else {
1184: print $client "refused\n";
1185: }
1186: # ---------------------------------------------------------------------- passwd
1187: } elsif ($userinput =~ /^passwd/) {
1188: if ($wasenc==1) {
1189: my
1190: ($cmd,$udom,$uname,$upass,$npass)=split(/:/,$userinput);
1191: chomp($npass);
1.32 www 1192: $upass=&unescape($upass);
1193: $npass=&unescape($npass);
1.98 foxr 1194: &Debug("Trying to change password for $uname");
1.72 matthew 1195: my $proname=propath($udom,$uname);
1.1 albertel 1196: my $passfilename="$proname/passwd";
1197: if (-e $passfilename) {
1198: my $realpasswd;
1199: { my $pf = IO::File->new($passfilename);
1200: $realpasswd=<$pf>; }
1201: chomp($realpasswd);
1.2 www 1202: my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
1203: if ($howpwd eq 'internal') {
1.98 foxr 1204: &Debug("internal auth");
1.2 www 1205: if (crypt($upass,$contentpwd) eq $contentpwd) {
1206: my $salt=time;
1207: $salt=substr($salt,6,2);
1208: my $ncpass=crypt($npass,$salt);
1.139 albertel 1209: {
1210: my $pf;
1211: if ($pf = IO::File->new(">$passfilename")) {
1212: print $pf "internal:$ncpass\n";
1213: &logthis("Result of password change for $uname: pwchange_success");
1214: print $client "ok\n";
1215: } else {
1216: &logthis("Unable to open $uname passwd to change password");
1217: print $client "non_authorized\n";
1218: }
1219: }
1220:
1.2 www 1221: } else {
1222: print $client "non_authorized\n";
1223: }
1.72 matthew 1224: } elsif ($howpwd eq 'unix') {
1225: # Unix means we have to access /etc/password
1226: # one way or another.
1227: # First: Make sure the current password is
1228: # correct
1.98 foxr 1229: &Debug("auth is unix");
1.72 matthew 1230: $contentpwd=(getpwnam($uname))[1];
1231: my $pwdcorrect = "0";
1232: my $pwauth_path="/usr/local/sbin/pwauth";
1233: unless ($contentpwd eq 'x') {
1234: $pwdcorrect=
1235: (crypt($upass,$contentpwd) eq $contentpwd);
1236: } elsif (-e $pwauth_path) {
1237: open PWAUTH, "|$pwauth_path" or
1238: die "Cannot invoke authentication";
1239: print PWAUTH "$uname\n$upass\n";
1240: close PWAUTH;
1.98 foxr 1241: &Debug("exited pwauth with $? ($uname,$upass) ");
1242: $pwdcorrect=($? == 0);
1.72 matthew 1243: }
1244: if ($pwdcorrect) {
1245: my $execdir=$perlvar{'lonDaemons'};
1.98 foxr 1246: &Debug("Opening lcpasswd pipeline");
1.132 matthew 1247: my $pf = IO::File->new("|$execdir/lcpasswd > $perlvar{'lonDaemons'}/logs/lcpasswd.log");
1.72 matthew 1248: print $pf "$uname\n$npass\n$npass\n";
1249: close $pf;
1.97 foxr 1250: my $err = $?;
1251: my $result = ($err>0 ? 'pwchange_failure'
1.72 matthew 1252: : 'ok');
1.96 foxr 1253: &logthis("Result of password change for $uname: ".
1254: &lcpasswdstrerror($?));
1.72 matthew 1255: print $client "$result\n";
1256: } else {
1257: print $client "non_authorized\n";
1258: }
1259: } else {
1.2 www 1260: print $client "auth_mode_error\n";
1.1 albertel 1261: }
1262: } else {
1263: print $client "unknown_user\n";
1.31 www 1264: }
1265: } else {
1266: print $client "refused\n";
1267: }
1268: # -------------------------------------------------------------------- makeuser
1269: } elsif ($userinput =~ /^makeuser/) {
1.91 albertel 1270: &Debug("Make user received");
1.56 harris41 1271: my $oldumask=umask(0077);
1.31 www 1272: if ($wasenc==1) {
1273: my
1274: ($cmd,$udom,$uname,$umode,$npass)=split(/:/,$userinput);
1.77 foxr 1275: &Debug("cmd =".$cmd." $udom =".$udom.
1276: " uname=".$uname);
1.31 www 1277: chomp($npass);
1.32 www 1278: $npass=&unescape($npass);
1.31 www 1279: my $proname=propath($udom,$uname);
1280: my $passfilename="$proname/passwd";
1.77 foxr 1281: &Debug("Password file created will be:".
1282: $passfilename);
1.31 www 1283: if (-e $passfilename) {
1284: print $client "already_exists\n";
1.115 albertel 1285: } elsif ($udom ne $currentdomainid) {
1.31 www 1286: print $client "not_right_domain\n";
1287: } else {
1.134 albertel 1288: my @fpparts=split(/\//,$proname);
1289: my $fpnow=$fpparts[0].'/'.$fpparts[1].'/'.$fpparts[2];
1290: my $fperror='';
1291: for (my $i=3;$i<=$#fpparts;$i++) {
1.31 www 1292: $fpnow.='/'.$fpparts[$i];
1293: unless (-e $fpnow) {
1294: unless (mkdir($fpnow,0777)) {
1.109 foxr 1295: $fperror="error: ".($!+0)
1.111 matthew 1296: ." mkdir failed while attempting "
1297: ."makeuser\n";
1.31 www 1298: }
1299: }
1300: }
1301: unless ($fperror) {
1.98 foxr 1302: my $result=&make_passwd_file($uname, $umode,$npass,
1.91 albertel 1303: $passfilename);
1304: print $client $result;
1.31 www 1305: } else {
1306: print $client "$fperror\n";
1307: }
1.55 harris41 1308: }
1309: } else {
1310: print $client "refused\n";
1311: }
1.56 harris41 1312: umask($oldumask);
1.55 harris41 1313: # -------------------------------------------------------------- changeuserauth
1314: } elsif ($userinput =~ /^changeuserauth/) {
1.77 foxr 1315: &Debug("Changing authorization");
1316: if ($wasenc==1) {
1.55 harris41 1317: my
1.91 albertel 1318: ($cmd,$udom,$uname,$umode,$npass)=split(/:/,$userinput);
1.55 harris41 1319: chomp($npass);
1.77 foxr 1320: &Debug("cmd = ".$cmd." domain= ".$udom.
1321: "uname =".$uname." umode= ".$umode);
1.55 harris41 1322: $npass=&unescape($npass);
1.91 albertel 1323: my $proname=&propath($udom,$uname);
1.55 harris41 1324: my $passfilename="$proname/passwd";
1.115 albertel 1325: if ($udom ne $currentdomainid) {
1.55 harris41 1326: print $client "not_right_domain\n";
1327: } else {
1.98 foxr 1328: my $result=&make_passwd_file($uname, $umode,$npass,
1.93 albertel 1329: $passfilename);
1.91 albertel 1330: print $client $result;
1.1 albertel 1331: }
1332: } else {
1333: print $client "refused\n";
1334: }
1335: # ------------------------------------------------------------------------ home
1336: } elsif ($userinput =~ /^home/) {
1337: my ($cmd,$udom,$uname)=split(/:/,$userinput);
1338: chomp($uname);
1339: my $proname=propath($udom,$uname);
1340: if (-e $proname) {
1341: print $client "found\n";
1342: } else {
1343: print $client "not_found\n";
1344: }
1345: # ---------------------------------------------------------------------- update
1346: } elsif ($userinput =~ /^update/) {
1347: my ($cmd,$fname)=split(/:/,$userinput);
1348: my $ownership=ishome($fname);
1349: if ($ownership eq 'not_owner') {
1350: if (-e $fname) {
1351: my ($dev,$ino,$mode,$nlink,
1352: $uid,$gid,$rdev,$size,
1353: $atime,$mtime,$ctime,
1354: $blksize,$blocks)=stat($fname);
1.134 albertel 1355: my $now=time;
1356: my $since=$now-$atime;
1.1 albertel 1357: if ($since>$perlvar{'lonExpire'}) {
1.134 albertel 1358: my $reply=
1359: &reply("unsub:$fname","$hostid{$clientip}");
1.1 albertel 1360: unlink("$fname");
1361: } else {
1362: my $transname="$fname.in.transfer";
1363: my $remoteurl=
1364: reply("sub:$fname","$hostid{$clientip}");
1365: my $response;
1366: {
1367: my $ua=new LWP::UserAgent;
1368: my $request=new HTTP::Request('GET',"$remoteurl");
1369: $response=$ua->request($request,$transname);
1370: }
1371: if ($response->is_error()) {
1.24 albertel 1372: unlink($transname);
1.1 albertel 1373: my $message=$response->status_line;
1374: &logthis(
1375: "LWP GET: $message for $fname ($remoteurl)");
1376: } else {
1.14 www 1377: if ($remoteurl!~/\.meta$/) {
1.28 www 1378: my $ua=new LWP::UserAgent;
1.14 www 1379: my $mrequest=
1380: new HTTP::Request('GET',$remoteurl.'.meta');
1381: my $mresponse=
1382: $ua->request($mrequest,$fname.'.meta');
1383: if ($mresponse->is_error()) {
1384: unlink($fname.'.meta');
1385: }
1386: }
1.1 albertel 1387: rename($transname,$fname);
1388: }
1389: }
1390: print $client "ok\n";
1391: } else {
1392: print $client "not_found\n";
1393: }
1394: } else {
1395: print $client "rejected\n";
1396: }
1.85 www 1397: # -------------------------------------- fetch a user file from a remote server
1398: } elsif ($userinput =~ /^fetchuserfile/) {
1.86 www 1399: my ($cmd,$fname)=split(/:/,$userinput);
1400: my ($udom,$uname,$ufile)=split(/\//,$fname);
1401: my $udir=propath($udom,$uname).'/userfiles';
1.88 albertel 1402: unless (-e $udir) { mkdir($udir,0770); }
1.86 www 1403: if (-e $udir) {
1404: $ufile=~s/^[\.\~]+//;
1405: $ufile=~s/\///g;
1406: my $transname=$udir.'/'.$ufile;
1407: my $remoteurl='http://'.$clientip.'/userfiles/'.$fname;
1408: my $response;
1409: {
1410: my $ua=new LWP::UserAgent;
1411: my $request=new HTTP::Request('GET',"$remoteurl");
1412: $response=$ua->request($request,$transname);
1413: }
1414: if ($response->is_error()) {
1415: unlink($transname);
1416: my $message=$response->status_line;
1417: &logthis(
1418: "LWP GET: $message for $fname ($remoteurl)");
1419: print $client "failed\n";
1420: } else {
1421: print $client "ok\n";
1422: }
1423: } else {
1424: print $client "not_home\n";
1425: }
1.85 www 1426: # ------------------------------------------ authenticate access to a user file
1.86 www 1427: } elsif ($userinput =~ /^tokenauthuserfile/) {
1.85 www 1428: my ($cmd,$fname,$session)=split(/:/,$userinput);
1.86 www 1429: chomp($session);
1.134 albertel 1430: my $reply='non_auth';
1.86 www 1431: if (open(ENVIN,$perlvar{'lonIDsDir'}.'/'.
1.134 albertel 1432: $session.'.id')) {
1433: while (my $line=<ENVIN>) {
1434: if ($line=~/userfile\.$fname\=/) { $reply='ok'; }
1435: }
1436: close(ENVIN);
1437: print $client $reply."\n";
1.86 www 1438: } else {
1.134 albertel 1439: print $client "invalid_token\n";
1.86 www 1440: }
1.1 albertel 1441: # ----------------------------------------------------------------- unsubscribe
1442: } elsif ($userinput =~ /^unsub/) {
1443: my ($cmd,$fname)=split(/:/,$userinput);
1444: if (-e $fname) {
1.84 albertel 1445: print $client &unsub($client,$fname,$clientip);
1.1 albertel 1446: } else {
1447: print $client "not_found\n";
1448: }
1449: # ------------------------------------------------------------------- subscribe
1450: } elsif ($userinput =~ /^sub/) {
1.84 albertel 1451: print $client &subscribe($userinput,$clientip);
1.102 www 1452: # ------------------------------------------------------------- current version
1453: } elsif ($userinput =~ /^currentversion/) {
1454: my ($cmd,$fname)=split(/:/,$userinput);
1455: print $client ¤tversion($fname)."\n";
1.12 harris41 1456: # ------------------------------------------------------------------------- log
1457: } elsif ($userinput =~ /^log/) {
1458: my ($cmd,$udom,$uname,$what)=split(/:/,$userinput);
1459: chomp($what);
1460: my $proname=propath($udom,$uname);
1461: my $now=time;
1462: {
1463: my $hfh;
1464: if ($hfh=IO::File->new(">>$proname/activity.log")) {
1465: print $hfh "$now:$hostid{$clientip}:$what\n";
1466: print $client "ok\n";
1467: } else {
1.109 foxr 1468: print $client "error: ".($!+0)
1.111 matthew 1469: ." IO::File->new Failed "
1470: ."while attempting log\n";
1.12 harris41 1471: }
1472: }
1.1 albertel 1473: # ------------------------------------------------------------------------- put
1474: } elsif ($userinput =~ /^put/) {
1.6 www 1475: my ($cmd,$udom,$uname,$namespace,$what)
1.1 albertel 1476: =split(/:/,$userinput);
1.8 www 1477: $namespace=~s/\//\_/g;
1.6 www 1478: $namespace=~s/\W//g;
1479: if ($namespace ne 'roles') {
1.1 albertel 1480: chomp($what);
1481: my $proname=propath($udom,$uname);
1482: my $now=time;
1.48 www 1483: unless ($namespace=~/^nohist\_/) {
1.1 albertel 1484: my $hfh;
1485: if (
1486: $hfh=IO::File->new(">>$proname/$namespace.hist")
1487: ) { print $hfh "P:$now:$what\n"; }
1488: }
1489: my @pairs=split(/\&/,$what);
1.134 albertel 1490: my %hash;
1491: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT(),0640)) {
1492: foreach my $pair (@pairs) {
1493: my ($key,$value)=split(/=/,$pair);
1.1 albertel 1494: $hash{$key}=$value;
1495: }
1.4 www 1496: if (untie(%hash)) {
1.1 albertel 1497: print $client "ok\n";
1498: } else {
1.109 foxr 1499: print $client "error: ".($!+0)
1.111 matthew 1500: ." untie(GDBM) failed ".
1501: "while attempting put\n";
1.1 albertel 1502: }
1503: } else {
1.109 foxr 1504: print $client "error: ".($!)
1.111 matthew 1505: ." tie(GDBM) Failed ".
1506: "while attempting put\n";
1.1 albertel 1507: }
1.6 www 1508: } else {
1509: print $client "refused\n";
1510: }
1511: # -------------------------------------------------------------------- rolesput
1512: } elsif ($userinput =~ /^rolesput/) {
1.77 foxr 1513: &Debug("rolesput");
1.6 www 1514: if ($wasenc==1) {
1515: my ($cmd,$exedom,$exeuser,$udom,$uname,$what)
1516: =split(/:/,$userinput);
1.77 foxr 1517: &Debug("cmd = ".$cmd." exedom= ".$exedom.
1518: "user = ".$exeuser." udom=".$udom.
1519: "what = ".$what);
1.6 www 1520: my $namespace='roles';
1521: chomp($what);
1522: my $proname=propath($udom,$uname);
1523: my $now=time;
1524: {
1525: my $hfh;
1526: if (
1527: $hfh=IO::File->new(">>$proname/$namespace.hist")
1528: ) {
1529: print $hfh "P:$now:$exedom:$exeuser:$what\n";
1530: }
1531: }
1532: my @pairs=split(/\&/,$what);
1.134 albertel 1533: my %hash;
1534: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT(),0640)) {
1535: foreach my $pair (@pairs) {
1536: my ($key,$value)=split(/=/,$pair);
1.78 foxr 1537: &ManagePermissions($key, $udom, $uname,
1538: &GetAuthType( $udom,
1539: $uname));
1.6 www 1540: $hash{$key}=$value;
1541: }
1542: if (untie(%hash)) {
1543: print $client "ok\n";
1544: } else {
1.109 foxr 1545: print $client "error: ".($!+0)
1.111 matthew 1546: ." untie(GDBM) Failed ".
1547: "while attempting rolesput\n";
1.6 www 1548: }
1549: } else {
1.109 foxr 1550: print $client "error: ".($!+0)
1.111 matthew 1551: ." tie(GDBM) Failed ".
1552: "while attempting rolesput\n";
1.117 www 1553: }
1554: } else {
1555: print $client "refused\n";
1556: }
1557: # -------------------------------------------------------------------- rolesdel
1558: } elsif ($userinput =~ /^rolesdel/) {
1559: &Debug("rolesdel");
1560: if ($wasenc==1) {
1561: my ($cmd,$exedom,$exeuser,$udom,$uname,$what)
1562: =split(/:/,$userinput);
1563: &Debug("cmd = ".$cmd." exedom= ".$exedom.
1564: "user = ".$exeuser." udom=".$udom.
1565: "what = ".$what);
1566: my $namespace='roles';
1567: chomp($what);
1568: my $proname=propath($udom,$uname);
1569: my $now=time;
1570: {
1571: my $hfh;
1572: if (
1573: $hfh=IO::File->new(">>$proname/$namespace.hist")
1574: ) {
1575: print $hfh "D:$now:$exedom:$exeuser:$what\n";
1576: }
1577: }
1578: my @rolekeys=split(/\&/,$what);
1.134 albertel 1579: my %hash;
1580: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT(),0640)) {
1581: foreach my $key (@rolekeys) {
1.117 www 1582: delete $hash{$key};
1583: }
1584: if (untie(%hash)) {
1585: print $client "ok\n";
1586: } else {
1587: print $client "error: ".($!+0)
1588: ." untie(GDBM) Failed ".
1589: "while attempting rolesdel\n";
1590: }
1591: } else {
1592: print $client "error: ".($!+0)
1593: ." tie(GDBM) Failed ".
1594: "while attempting rolesdel\n";
1.6 www 1595: }
1596: } else {
1597: print $client "refused\n";
1598: }
1.1 albertel 1599: # ------------------------------------------------------------------------- get
1600: } elsif ($userinput =~ /^get/) {
1601: my ($cmd,$udom,$uname,$namespace,$what)
1602: =split(/:/,$userinput);
1.8 www 1603: $namespace=~s/\//\_/g;
1.1 albertel 1604: $namespace=~s/\W//g;
1605: chomp($what);
1606: my @queries=split(/\&/,$what);
1607: my $proname=propath($udom,$uname);
1608: my $qresult='';
1.134 albertel 1609: my %hash;
1610: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER(),0640)) {
1611: for (my $i=0;$i<=$#queries;$i++) {
1.1 albertel 1612: $qresult.="$hash{$queries[$i]}&";
1613: }
1.4 www 1614: if (untie(%hash)) {
1.1 albertel 1615: $qresult=~s/\&$//;
1616: print $client "$qresult\n";
1617: } else {
1.109 foxr 1618: print $client "error: ".($!+0)
1.111 matthew 1619: ." untie(GDBM) Failed ".
1620: "while attempting get\n";
1.1 albertel 1621: }
1622: } else {
1.112 matthew 1623: if ($!+0 == 2) {
1624: print $client "error:No such file or ".
1625: "GDBM reported bad block error\n";
1626: } else {
1627: print $client "error: ".($!+0)
1628: ." tie(GDBM) Failed ".
1629: "while attempting get\n";
1630: }
1.1 albertel 1631: }
1632: # ------------------------------------------------------------------------ eget
1633: } elsif ($userinput =~ /^eget/) {
1634: my ($cmd,$udom,$uname,$namespace,$what)
1635: =split(/:/,$userinput);
1.8 www 1636: $namespace=~s/\//\_/g;
1.1 albertel 1637: $namespace=~s/\W//g;
1638: chomp($what);
1639: my @queries=split(/\&/,$what);
1640: my $proname=propath($udom,$uname);
1641: my $qresult='';
1.134 albertel 1642: my %hash;
1643: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER(),0640)) {
1644: for (my $i=0;$i<=$#queries;$i++) {
1.1 albertel 1645: $qresult.="$hash{$queries[$i]}&";
1646: }
1.4 www 1647: if (untie(%hash)) {
1.1 albertel 1648: $qresult=~s/\&$//;
1649: if ($cipher) {
1650: my $cmdlength=length($qresult);
1651: $qresult.=" ";
1652: my $encqresult='';
1653: for
1654: (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
1655: $encqresult.=
1656: unpack("H16",
1657: $cipher->encrypt(substr($qresult,$encidx,8)));
1658: }
1659: print $client "enc:$cmdlength:$encqresult\n";
1660: } else {
1661: print $client "error:no_key\n";
1662: }
1663: } else {
1.109 foxr 1664: print $client "error: ".($!+0)
1.111 matthew 1665: ." untie(GDBM) Failed ".
1666: "while attempting eget\n";
1.1 albertel 1667: }
1668: } else {
1.109 foxr 1669: print $client "error: ".($!+0)
1.111 matthew 1670: ." tie(GDBM) Failed ".
1671: "while attempting eget\n";
1.1 albertel 1672: }
1673: # ------------------------------------------------------------------------- del
1674: } elsif ($userinput =~ /^del/) {
1675: my ($cmd,$udom,$uname,$namespace,$what)
1676: =split(/:/,$userinput);
1.8 www 1677: $namespace=~s/\//\_/g;
1.1 albertel 1678: $namespace=~s/\W//g;
1679: chomp($what);
1680: my $proname=propath($udom,$uname);
1681: my $now=time;
1.48 www 1682: unless ($namespace=~/^nohist\_/) {
1.1 albertel 1683: my $hfh;
1684: if (
1685: $hfh=IO::File->new(">>$proname/$namespace.hist")
1686: ) { print $hfh "D:$now:$what\n"; }
1687: }
1688: my @keys=split(/\&/,$what);
1.134 albertel 1689: my %hash;
1690: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT(),0640)) {
1691: foreach my $key (@keys) {
1.1 albertel 1692: delete($hash{$key});
1693: }
1.4 www 1694: if (untie(%hash)) {
1.1 albertel 1695: print $client "ok\n";
1696: } else {
1.109 foxr 1697: print $client "error: ".($!+0)
1.111 matthew 1698: ." untie(GDBM) Failed ".
1699: "while attempting del\n";
1.1 albertel 1700: }
1701: } else {
1.109 foxr 1702: print $client "error: ".($!+0)
1.111 matthew 1703: ." tie(GDBM) Failed ".
1704: "while attempting del\n";
1.1 albertel 1705: }
1706: # ------------------------------------------------------------------------ keys
1707: } elsif ($userinput =~ /^keys/) {
1708: my ($cmd,$udom,$uname,$namespace)
1709: =split(/:/,$userinput);
1.8 www 1710: $namespace=~s/\//\_/g;
1.1 albertel 1711: $namespace=~s/\W//g;
1712: my $proname=propath($udom,$uname);
1713: my $qresult='';
1.134 albertel 1714: my %hash;
1715: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER(),0640)) {
1716: foreach my $key (keys %hash) {
1.1 albertel 1717: $qresult.="$key&";
1718: }
1.4 www 1719: if (untie(%hash)) {
1.1 albertel 1720: $qresult=~s/\&$//;
1721: print $client "$qresult\n";
1722: } else {
1.109 foxr 1723: print $client "error: ".($!+0)
1.111 matthew 1724: ." untie(GDBM) Failed ".
1725: "while attempting keys\n";
1.105 matthew 1726: }
1727: } else {
1.109 foxr 1728: print $client "error: ".($!+0)
1.111 matthew 1729: ." tie(GDBM) Failed ".
1730: "while attempting keys\n";
1.105 matthew 1731: }
1732: # ----------------------------------------------------------------- dumpcurrent
1.107 matthew 1733: } elsif ($userinput =~ /^currentdump/) {
1.105 matthew 1734: my ($cmd,$udom,$uname,$namespace)
1735: =split(/:/,$userinput);
1736: $namespace=~s/\//\_/g;
1737: $namespace=~s/\W//g;
1738: my $qresult='';
1739: my $proname=propath($udom,$uname);
1.134 albertel 1740: my %hash;
1.105 matthew 1741: if (tie(%hash,'GDBM_File',
1742: "$proname/$namespace.db",
1743: &GDBM_READER(),0640)) {
1744: # Structure of %data:
1745: # $data{$symb}->{$parameter}=$value;
1746: # $data{$symb}->{'v.'.$parameter}=$version;
1747: # since $parameter will be unescaped, we do not
1748: # have to worry about silly parameter names...
1749: my %data = ();
1750: while (my ($key,$value) = each(%hash)) {
1751: my ($v,$symb,$param) = split(/:/,$key);
1752: next if ($v eq 'version' || $symb eq 'keys');
1753: next if (exists($data{$symb}) &&
1754: exists($data{$symb}->{$param}) &&
1755: $data{$symb}->{'v.'.$param} > $v);
1756: $data{$symb}->{$param}=$value;
1.107 matthew 1757: $data{$symb}->{'v.'.$param}=$v;
1.105 matthew 1758: }
1759: if (untie(%hash)) {
1760: while (my ($symb,$param_hash) = each(%data)) {
1761: while(my ($param,$value) = each (%$param_hash)){
1762: next if ($param =~ /^v\./);
1763: $qresult.=$symb.':'.$param.'='.$value.'&';
1764: }
1765: }
1766: chop($qresult);
1767: print $client "$qresult\n";
1768: } else {
1.109 foxr 1769: print $client "error: ".($!+0)
1.111 matthew 1770: ." untie(GDBM) Failed ".
1771: "while attempting currentdump\n";
1.1 albertel 1772: }
1773: } else {
1.109 foxr 1774: print $client "error: ".($!+0)
1.111 matthew 1775: ." tie(GDBM) Failed ".
1776: "while attempting currentdump\n";
1.1 albertel 1777: }
1778: # ------------------------------------------------------------------------ dump
1779: } elsif ($userinput =~ /^dump/) {
1.62 www 1780: my ($cmd,$udom,$uname,$namespace,$regexp)
1.1 albertel 1781: =split(/:/,$userinput);
1.8 www 1782: $namespace=~s/\//\_/g;
1.1 albertel 1783: $namespace=~s/\W//g;
1.62 www 1784: if (defined($regexp)) {
1785: $regexp=&unescape($regexp);
1786: } else {
1787: $regexp='.';
1788: }
1.100 matthew 1789: my $qresult='';
1.1 albertel 1790: my $proname=propath($udom,$uname);
1.134 albertel 1791: my %hash;
1792: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER(),0640)) {
1.90 stredwic 1793: study($regexp);
1.134 albertel 1794: while (my ($key,$value) = each(%hash)) {
1.100 matthew 1795: if ($regexp eq '.') {
1796: $qresult.=$key.'='.$value.'&';
1797: } else {
1798: my $unescapeKey = &unescape($key);
1799: if (eval('$unescapeKey=~/$regexp/')) {
1800: $qresult.="$key=$value&";
1801: }
1802: }
1.7 www 1803: }
1.100 matthew 1804: if (untie(%hash)) {
1805: chop($qresult);
1806: print $client "$qresult\n";
1.7 www 1807: } else {
1.109 foxr 1808: print $client "error: ".($!+0)
1.111 matthew 1809: ." untie(GDBM) Failed ".
1810: "while attempting dump\n";
1.7 www 1811: }
1812: } else {
1.109 foxr 1813: print $client "error: ".($!+0)
1.111 matthew 1814: ." tie(GDBM) Failed ".
1815: "while attempting dump\n";
1.7 www 1816: }
1817: # ----------------------------------------------------------------------- store
1818: } elsif ($userinput =~ /^store/) {
1819: my ($cmd,$udom,$uname,$namespace,$rid,$what)
1820: =split(/:/,$userinput);
1.8 www 1821: $namespace=~s/\//\_/g;
1.7 www 1822: $namespace=~s/\W//g;
1823: if ($namespace ne 'roles') {
1824: chomp($what);
1825: my $proname=propath($udom,$uname);
1826: my $now=time;
1.48 www 1827: unless ($namespace=~/^nohist\_/) {
1.7 www 1828: my $hfh;
1829: if (
1830: $hfh=IO::File->new(">>$proname/$namespace.hist")
1831: ) { print $hfh "P:$now:$rid:$what\n"; }
1832: }
1833: my @pairs=split(/\&/,$what);
1.134 albertel 1834: my %hash;
1835: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT(),0640)) {
1.7 www 1836: my @previouskeys=split(/&/,$hash{"keys:$rid"});
1837: my $key;
1838: $hash{"version:$rid"}++;
1839: my $version=$hash{"version:$rid"};
1840: my $allkeys='';
1.134 albertel 1841: foreach my $pair (@pairs) {
1842: my ($key,$value)=split(/=/,$pair);
1.7 www 1843: $allkeys.=$key.':';
1844: $hash{"$version:$rid:$key"}=$value;
1845: }
1.36 www 1846: $hash{"$version:$rid:timestamp"}=$now;
1847: $allkeys.='timestamp';
1.7 www 1848: $hash{"$version:keys:$rid"}=$allkeys;
1849: if (untie(%hash)) {
1850: print $client "ok\n";
1851: } else {
1.109 foxr 1852: print $client "error: ".($!+0)
1.111 matthew 1853: ." untie(GDBM) Failed ".
1854: "while attempting store\n";
1.7 www 1855: }
1856: } else {
1.109 foxr 1857: print $client "error: ".($!+0)
1.111 matthew 1858: ." tie(GDBM) Failed ".
1859: "while attempting store\n";
1.7 www 1860: }
1861: } else {
1862: print $client "refused\n";
1863: }
1864: # --------------------------------------------------------------------- restore
1865: } elsif ($userinput =~ /^restore/) {
1866: my ($cmd,$udom,$uname,$namespace,$rid)
1867: =split(/:/,$userinput);
1.8 www 1868: $namespace=~s/\//\_/g;
1.7 www 1869: $namespace=~s/\W//g;
1870: chomp($rid);
1871: my $proname=propath($udom,$uname);
1872: my $qresult='';
1.134 albertel 1873: my %hash;
1874: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER(),0640)) {
1.7 www 1875: my $version=$hash{"version:$rid"};
1876: $qresult.="version=$version&";
1877: my $scope;
1878: for ($scope=1;$scope<=$version;$scope++) {
1879: my $vkeys=$hash{"$scope:keys:$rid"};
1880: my @keys=split(/:/,$vkeys);
1881: my $key;
1882: $qresult.="$scope:keys=$vkeys&";
1883: foreach $key (@keys) {
1.21 www 1884: $qresult.="$scope:$key=".$hash{"$scope:$rid:$key"}."&";
1.7 www 1885: }
1.1 albertel 1886: }
1.4 www 1887: if (untie(%hash)) {
1.1 albertel 1888: $qresult=~s/\&$//;
1889: print $client "$qresult\n";
1890: } else {
1.109 foxr 1891: print $client "error: ".($!+0)
1.111 matthew 1892: ." untie(GDBM) Failed ".
1893: "while attempting restore\n";
1.1 albertel 1894: }
1895: } else {
1.109 foxr 1896: print $client "error: ".($!+0)
1.111 matthew 1897: ." tie(GDBM) Failed ".
1898: "while attempting restore\n";
1.1 albertel 1899: }
1.86 www 1900: # -------------------------------------------------------------------- chatsend
1901: } elsif ($userinput =~ /^chatsend/) {
1902: my ($cmd,$cdom,$cnum,$newpost)=split(/\:/,$userinput);
1903: &chatadd($cdom,$cnum,$newpost);
1904: print $client "ok\n";
1905: # -------------------------------------------------------------------- chatretr
1906: } elsif ($userinput =~ /^chatretr/) {
1.122 www 1907: my
1908: ($cmd,$cdom,$cnum,$udom,$uname)=split(/\:/,$userinput);
1.86 www 1909: my $reply='';
1.122 www 1910: foreach (&getchat($cdom,$cnum,$udom,$uname)) {
1.86 www 1911: $reply.=&escape($_).':';
1912: }
1913: $reply=~s/\:$//;
1914: print $client $reply."\n";
1.12 harris41 1915: # ------------------------------------------------------------------- querysend
1916: } elsif ($userinput =~ /^querysend/) {
1.44 harris41 1917: my ($cmd,$query,
1.82 www 1918: $arg1,$arg2,$arg3)=split(/\:/,$userinput);
1.12 harris41 1919: $query=~s/\n*$//g;
1.82 www 1920: print $client "".
1.40 harris41 1921: sqlreply("$hostid{$clientip}\&$query".
1.82 www 1922: "\&$arg1"."\&$arg2"."\&$arg3")."\n";
1.12 harris41 1923: # ------------------------------------------------------------------ queryreply
1924: } elsif ($userinput =~ /^queryreply/) {
1925: my ($cmd,$id,$reply)=split(/:/,$userinput);
1926: my $store;
1.13 www 1927: my $execdir=$perlvar{'lonDaemons'};
1928: if ($store=IO::File->new(">$execdir/tmp/$id")) {
1.43 harris41 1929: $reply=~s/\&/\n/g;
1.12 harris41 1930: print $store $reply;
1931: close $store;
1.46 harris41 1932: my $store2=IO::File->new(">$execdir/tmp/$id.end");
1933: print $store2 "done\n";
1934: close $store2;
1.12 harris41 1935: print $client "ok\n";
1936: }
1937: else {
1.109 foxr 1938: print $client "error: ".($!+0)
1.111 matthew 1939: ." IO::File->new Failed ".
1940: "while attempting queryreply\n";
1.12 harris41 1941: }
1.118 www 1942: # ----------------------------------------------------------------- courseidput
1943: } elsif ($userinput =~ /^courseidput/) {
1944: my ($cmd,$udom,$what)=split(/:/,$userinput);
1945: chomp($what);
1946: $udom=~s/\W//g;
1947: my $proname=
1948: "$perlvar{'lonUsersDir'}/$udom/nohist_courseids";
1949: my $now=time;
1950: my @pairs=split(/\&/,$what);
1.134 albertel 1951: my %hash;
1952: if (tie(%hash,'GDBM_File',"$proname.db",&GDBM_WRCREAT(),0640)) {
1953: foreach my $pair (@pairs) {
1954: my ($key,$value)=split(/=/,$pair);
1.118 www 1955: $hash{$key}=$value.':'.$now;
1956: }
1957: if (untie(%hash)) {
1958: print $client "ok\n";
1959: } else {
1960: print $client "error: ".($!+0)
1961: ." untie(GDBM) Failed ".
1962: "while attempting courseidput\n";
1963: }
1964: } else {
1965: print $client "error: ".($!+0)
1966: ." tie(GDBM) Failed ".
1967: "while attempting courseidput\n";
1968: }
1969: # ---------------------------------------------------------------- courseiddump
1970: } elsif ($userinput =~ /^courseiddump/) {
1971: my ($cmd,$udom,$since,$description)
1972: =split(/:/,$userinput);
1973: if (defined($description)) {
1974: $description=&unescape($description);
1975: } else {
1976: $description='.';
1977: }
1978: unless (defined($since)) { $since=0; }
1979: my $qresult='';
1980: my $proname=
1981: "$perlvar{'lonUsersDir'}/$udom/nohist_courseids";
1.134 albertel 1982: my %hash;
1983: if (tie(%hash,'GDBM_File',"$proname.db",&GDBM_READER(),0640)) {
1984: while (my ($key,$value) = each(%hash)) {
1.118 www 1985: my ($descr,$lasttime)=split(/\:/,$value);
1986: if ($lasttime<$since) { next; }
1.133 www 1987: if ($description eq '.') {
1.118 www 1988: $qresult.=$key.'='.$descr.'&';
1989: } else {
1990: my $unescapeVal = &unescape($descr);
1.120 www 1991: if (eval('$unescapeVal=~/$description/i')) {
1.118 www 1992: $qresult.="$key=$descr&";
1993: }
1994: }
1995: }
1996: if (untie(%hash)) {
1997: chop($qresult);
1998: print $client "$qresult\n";
1999: } else {
2000: print $client "error: ".($!+0)
2001: ." untie(GDBM) Failed ".
2002: "while attempting courseiddump\n";
2003: }
2004: } else {
2005: print $client "error: ".($!+0)
2006: ." tie(GDBM) Failed ".
2007: "while attempting courseiddump\n";
2008: }
1.1 albertel 2009: # ----------------------------------------------------------------------- idput
2010: } elsif ($userinput =~ /^idput/) {
2011: my ($cmd,$udom,$what)=split(/:/,$userinput);
2012: chomp($what);
2013: $udom=~s/\W//g;
2014: my $proname="$perlvar{'lonUsersDir'}/$udom/ids";
2015: my $now=time;
2016: {
2017: my $hfh;
2018: if (
2019: $hfh=IO::File->new(">>$proname.hist")
2020: ) { print $hfh "P:$now:$what\n"; }
2021: }
2022: my @pairs=split(/\&/,$what);
1.134 albertel 2023: my %hash;
2024: if (tie(%hash,'GDBM_File',"$proname.db",&GDBM_WRCREAT(),0640)) {
2025: foreach my $pair (@pairs) {
2026: my ($key,$value)=split(/=/,$pair);
1.1 albertel 2027: $hash{$key}=$value;
2028: }
1.4 www 2029: if (untie(%hash)) {
1.1 albertel 2030: print $client "ok\n";
2031: } else {
1.109 foxr 2032: print $client "error: ".($!+0)
1.111 matthew 2033: ." untie(GDBM) Failed ".
2034: "while attempting idput\n";
1.1 albertel 2035: }
2036: } else {
1.109 foxr 2037: print $client "error: ".($!+0)
1.111 matthew 2038: ." tie(GDBM) Failed ".
2039: "while attempting idput\n";
1.1 albertel 2040: }
2041: # ----------------------------------------------------------------------- idget
2042: } elsif ($userinput =~ /^idget/) {
2043: my ($cmd,$udom,$what)=split(/:/,$userinput);
2044: chomp($what);
2045: $udom=~s/\W//g;
2046: my $proname="$perlvar{'lonUsersDir'}/$udom/ids";
2047: my @queries=split(/\&/,$what);
2048: my $qresult='';
1.134 albertel 2049: my %hash;
2050: if (tie(%hash,'GDBM_File',"$proname.db",&GDBM_READER(),0640)) {
2051: for (my $i=0;$i<=$#queries;$i++) {
1.1 albertel 2052: $qresult.="$hash{$queries[$i]}&";
2053: }
1.4 www 2054: if (untie(%hash)) {
1.134 albertel 2055: $qresult=~s/\&$//;
2056: print $client "$qresult\n";
1.1 albertel 2057: } else {
1.134 albertel 2058: print $client "error: ".($!+0)
2059: ." untie(GDBM) Failed ".
2060: "while attempting idget\n";
1.1 albertel 2061: }
2062: } else {
1.109 foxr 2063: print $client "error: ".($!+0)
1.111 matthew 2064: ." tie(GDBM) Failed ".
2065: "while attempting idget\n";
1.1 albertel 2066: }
1.13 www 2067: # ---------------------------------------------------------------------- tmpput
2068: } elsif ($userinput =~ /^tmpput/) {
2069: my ($cmd,$what)=split(/:/,$userinput);
2070: my $store;
2071: $tmpsnum++;
2072: my $id=$$.'_'.$clientip.'_'.$tmpsnum;
2073: $id=~s/\W/\_/g;
2074: $what=~s/\n//g;
2075: my $execdir=$perlvar{'lonDaemons'};
2076: if ($store=IO::File->new(">$execdir/tmp/$id.tmp")) {
2077: print $store $what;
2078: close $store;
2079: print $client "$id\n";
2080: }
2081: else {
1.109 foxr 2082: print $client "error: ".($!+0)
1.111 matthew 2083: ."IO::File->new Failed ".
2084: "while attempting tmpput\n";
1.13 www 2085: }
2086:
2087: # ---------------------------------------------------------------------- tmpget
2088: } elsif ($userinput =~ /^tmpget/) {
2089: my ($cmd,$id)=split(/:/,$userinput);
2090: chomp($id);
2091: $id=~s/\W/\_/g;
2092: my $store;
2093: my $execdir=$perlvar{'lonDaemons'};
2094: if ($store=IO::File->new("$execdir/tmp/$id.tmp")) {
2095: my $reply=<$store>;
2096: print $client "$reply\n";
2097: close $store;
2098: }
2099: else {
1.109 foxr 2100: print $client "error: ".($!+0)
1.111 matthew 2101: ."IO::File->new Failed ".
2102: "while attempting tmpget\n";
1.13 www 2103: }
2104:
1.110 www 2105: # ---------------------------------------------------------------------- tmpdel
2106: } elsif ($userinput =~ /^tmpdel/) {
2107: my ($cmd,$id)=split(/:/,$userinput);
2108: chomp($id);
2109: $id=~s/\W/\_/g;
2110: my $execdir=$perlvar{'lonDaemons'};
2111: if (unlink("$execdir/tmp/$id.tmp")) {
2112: print $client "ok\n";
2113: } else {
2114: print $client "error: ".($!+0)
1.111 matthew 2115: ."Unlink tmp Failed ".
2116: "while attempting tmpdel\n";
1.110 www 2117: }
1.5 www 2118: # -------------------------------------------------------------------------- ls
2119: } elsif ($userinput =~ /^ls/) {
2120: my ($cmd,$ulsdir)=split(/:/,$userinput);
2121: my $ulsout='';
2122: my $ulsfn;
2123: if (-e $ulsdir) {
1.83 stredwic 2124: if(-d $ulsdir) {
2125: if (opendir(LSDIR,$ulsdir)) {
2126: while ($ulsfn=readdir(LSDIR)) {
2127: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
2128: $ulsout.=$ulsfn.'&'.
2129: join('&',@ulsstats).':';
2130: }
2131: closedir(LSDIR);
2132: }
2133: } else {
2134: my @ulsstats=stat($ulsdir);
2135: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
2136: }
2137: } else {
1.5 www 2138: $ulsout='no_such_dir';
2139: }
1.17 www 2140: if ($ulsout eq '') { $ulsout='empty'; }
1.5 www 2141: print $client "$ulsout\n";
1.136 www 2142: # ----------------------------------------------------------------- setannounce
2143: } elsif ($userinput =~ /^setannounce/) {
2144: my ($cmd,$announcement)=split(/:/,$userinput);
2145: chomp($announcement);
2146: $announcement=&unescape($announcement);
2147: if (my $store=IO::File->new('>'.$perlvar{'lonDocRoot'}.
2148: '/announcement.txt')) {
2149: print $store $announcement;
2150: close $store;
2151: print $client "ok\n";
2152: } else {
2153: print $client "error: ".($!+0)."\n";
2154: }
1.51 www 2155: # ------------------------------------------------------------------ Hanging up
2156: } elsif (($userinput =~ /^exit/) ||
2157: ($userinput =~ /^init/)) {
2158: &logthis(
2159: "Client $clientip ($hostid{$clientip}) hanging up: $userinput");
2160: print $client "bye\n";
1.59 www 2161: $client->close();
1.51 www 2162: last;
1.1 albertel 2163: # ------------------------------------------------------------- unknown command
1.121 albertel 2164: } elsif ($userinput =~ /^sethost:/) {
2165: print $client &sethost($userinput)."\n";
2166: } elsif ($userinput =~/^version:/) {
2167: print $client &version($userinput)."\n";
1.1 albertel 2168: } else {
2169: # unknown command
2170: print $client "unknown_cmd\n";
2171: }
1.58 www 2172: # -------------------------------------------------------------------- complete
1.63 www 2173: alarm(0);
1.58 www 2174: &status('Listening to '.$hostid{$clientip});
2175: }
1.59 www 2176: # --------------------------------------------- client unknown or fishy, refuse
1.1 albertel 2177: } else {
2178: print $client "refused\n";
1.59 www 2179: $client->close();
1.9 www 2180: &logthis("<font color=blue>WARNING: "
2181: ."Rejected client $clientip, closing connection</font>");
1.75 foxr 2182: }
1.106 foxr 2183: }
1.75 foxr 2184:
1.1 albertel 2185: # =============================================================================
1.75 foxr 2186:
2187: &logthis("<font color=red>CRITICAL: "
2188: ."Disconnect from $clientip ($hostid{$clientip})</font>");
1.106 foxr 2189:
1.59 www 2190:
1.1 albertel 2191: # this exit is VERY important, otherwise the child will become
2192: # a producer of more and more children, forking yourself into
2193: # process death.
2194: exit;
1.106 foxr 2195:
1.78 foxr 2196: }
2197:
2198:
2199: #
2200: # Checks to see if the input roleput request was to set
2201: # an author role. If so, invokes the lchtmldir script to set
2202: # up a correct public_html
2203: # Parameters:
2204: # request - The request sent to the rolesput subchunk.
2205: # We're looking for /domain/_au
2206: # domain - The domain in which the user is having roles doctored.
2207: # user - Name of the user for which the role is being put.
2208: # authtype - The authentication type associated with the user.
2209: #
2210: sub ManagePermissions
2211: {
2212: my $request = shift;
2213: my $domain = shift;
2214: my $user = shift;
2215: my $authtype= shift;
2216:
2217: # See if the request is of the form /$domain/_au
1.134 albertel 2218: &logthis("ruequest is $request");
1.78 foxr 2219: if($request =~ /^(\/$domain\/_au)$/) { # It's an author rolesput...
2220: my $execdir = $perlvar{'lonDaemons'};
2221: my $userhome= "/home/$user" ;
1.134 albertel 2222: &logthis("system $execdir/lchtmldir $userhome $user $authtype");
1.78 foxr 2223: system("$execdir/lchtmldir $userhome $user $authtype");
2224: }
2225: }
2226: #
2227: # GetAuthType - Determines the authorization type of a user in a domain.
2228:
2229: # Returns the authorization type or nouser if there is no such user.
2230: #
2231: sub GetAuthType
2232: {
2233: my $domain = shift;
2234: my $user = shift;
2235:
1.79 foxr 2236: Debug("GetAuthType( $domain, $user ) \n");
1.78 foxr 2237: my $proname = &propath($domain, $user);
2238: my $passwdfile = "$proname/passwd";
2239: if( -e $passwdfile ) {
2240: my $pf = IO::File->new($passwdfile);
2241: my $realpassword = <$pf>;
2242: chomp($realpassword);
1.79 foxr 2243: Debug("Password info = $realpassword\n");
1.78 foxr 2244: my ($authtype, $contentpwd) = split(/:/, $realpassword);
1.79 foxr 2245: Debug("Authtype = $authtype, content = $contentpwd\n");
1.78 foxr 2246: my $availinfo = '';
1.91 albertel 2247: if($authtype eq 'krb4' or $authtype eq 'krb5') {
1.78 foxr 2248: $availinfo = $contentpwd;
2249: }
1.79 foxr 2250:
1.78 foxr 2251: return "$authtype:$availinfo";
2252: }
2253: else {
1.79 foxr 2254: Debug("Returning nouser");
1.78 foxr 2255: return "nouser";
2256: }
1.1 albertel 2257: }
2258:
1.84 albertel 2259: sub addline {
2260: my ($fname,$hostid,$ip,$newline)=@_;
2261: my $contents;
2262: my $found=0;
2263: my $expr='^'.$hostid.':'.$ip.':';
2264: $expr =~ s/\./\\\./g;
1.134 albertel 2265: my $sh;
1.84 albertel 2266: if ($sh=IO::File->new("$fname.subscription")) {
2267: while (my $subline=<$sh>) {
2268: if ($subline !~ /$expr/) {$contents.= $subline;} else {$found=1;}
2269: }
2270: $sh->close();
2271: }
2272: $sh=IO::File->new(">$fname.subscription");
2273: if ($contents) { print $sh $contents; }
2274: if ($newline) { print $sh $newline; }
2275: $sh->close();
2276: return $found;
1.86 www 2277: }
2278:
2279: sub getchat {
1.122 www 2280: my ($cdom,$cname,$udom,$uname)=@_;
1.87 www 2281: my %hash;
2282: my $proname=&propath($cdom,$cname);
2283: my @entries=();
1.88 albertel 2284: if (tie(%hash,'GDBM_File',"$proname/nohist_chatroom.db",
2285: &GDBM_READER(),0640)) {
2286: @entries=map { $_.':'.$hash{$_} } sort keys %hash;
2287: untie %hash;
1.123 www 2288: }
1.124 www 2289: my @participants=();
1.134 albertel 2290: my $cutoff=time-60;
1.123 www 2291: if (tie(%hash,'GDBM_File',"$proname/nohist_inchatroom.db",
1.124 www 2292: &GDBM_WRCREAT(),0640)) {
2293: $hash{$uname.':'.$udom}=time;
1.123 www 2294: foreach (sort keys %hash) {
2295: if ($hash{$_}>$cutoff) {
1.124 www 2296: $participants[$#participants+1]='active_participant:'.$_;
1.123 www 2297: }
2298: }
2299: untie %hash;
1.86 www 2300: }
1.124 www 2301: return (@participants,@entries);
1.86 www 2302: }
2303:
2304: sub chatadd {
1.88 albertel 2305: my ($cdom,$cname,$newchat)=@_;
2306: my %hash;
2307: my $proname=&propath($cdom,$cname);
2308: my @entries=();
1.142 www 2309: my $time=time;
1.88 albertel 2310: if (tie(%hash,'GDBM_File',"$proname/nohist_chatroom.db",
2311: &GDBM_WRCREAT(),0640)) {
2312: @entries=map { $_.':'.$hash{$_} } sort keys %hash;
2313: my ($lastid)=($entries[$#entries]=~/^(\w+)\:/);
2314: my ($thentime,$idnum)=split(/\_/,$lastid);
2315: my $newid=$time.'_000000';
2316: if ($thentime==$time) {
2317: $idnum=~s/^0+//;
2318: $idnum++;
2319: $idnum=substr('000000'.$idnum,-6,6);
2320: $newid=$time.'_'.$idnum;
2321: }
2322: $hash{$newid}=$newchat;
2323: my $expired=$time-3600;
2324: foreach (keys %hash) {
2325: my ($thistime)=($_=~/(\d+)\_/);
2326: if ($thistime<$expired) {
1.89 www 2327: delete $hash{$_};
1.88 albertel 2328: }
2329: }
2330: untie %hash;
1.142 www 2331: }
2332: {
2333: my $hfh;
2334: if ($hfh=IO::File->new(">>$proname/chatroom.log")) {
2335: print $hfh "$time:".&unescape($newchat)."\n";
2336: }
1.86 www 2337: }
1.84 albertel 2338: }
2339:
2340: sub unsub {
2341: my ($fname,$clientip)=@_;
2342: my $result;
2343: if (unlink("$fname.$hostid{$clientip}")) {
2344: $result="ok\n";
2345: } else {
2346: $result="not_subscribed\n";
2347: }
2348: if (-e "$fname.subscription") {
2349: my $found=&addline($fname,$hostid{$clientip},$clientip,'');
2350: if ($found) { $result="ok\n"; }
2351: } else {
2352: if ($result != "ok\n") { $result="not_subscribed\n"; }
2353: }
2354: return $result;
2355: }
2356:
1.101 www 2357: sub currentversion {
2358: my $fname=shift;
2359: my $version=-1;
2360: my $ulsdir='';
2361: if ($fname=~/^(.+)\/[^\/]+$/) {
2362: $ulsdir=$1;
2363: }
1.114 albertel 2364: my ($fnamere1,$fnamere2);
2365: # remove version if already specified
1.101 www 2366: $fname=~s/\.\d+\.(\w+(?:\.meta)*)$/\.$1/;
1.114 albertel 2367: # get the bits that go before and after the version number
2368: if ( $fname=~/^(.*\.)(\w+(?:\.meta)*)$/ ) {
2369: $fnamere1=$1;
2370: $fnamere2='.'.$2;
2371: }
1.101 www 2372: if (-e $fname) { $version=1; }
2373: if (-e $ulsdir) {
1.134 albertel 2374: if(-d $ulsdir) {
2375: if (opendir(LSDIR,$ulsdir)) {
2376: my $ulsfn;
2377: while ($ulsfn=readdir(LSDIR)) {
1.101 www 2378: # see if this is a regular file (ignore links produced earlier)
1.134 albertel 2379: my $thisfile=$ulsdir.'/'.$ulsfn;
2380: unless (-l $thisfile) {
2381: if ($thisfile=~/\Q$fnamere1\E(\d+)\Q$fnamere2\E/) {
2382: if ($1>$version) { $version=$1; }
2383: }
2384: }
2385: }
2386: closedir(LSDIR);
2387: $version++;
2388: }
2389: }
2390: }
2391: return $version;
1.101 www 2392: }
2393:
2394: sub thisversion {
2395: my $fname=shift;
2396: my $version=-1;
2397: if ($fname=~/\.(\d+)\.\w+(?:\.meta)*$/) {
2398: $version=$1;
2399: }
2400: return $version;
2401: }
2402:
1.84 albertel 2403: sub subscribe {
2404: my ($userinput,$clientip)=@_;
2405: my $result;
2406: my ($cmd,$fname)=split(/:/,$userinput);
2407: my $ownership=&ishome($fname);
2408: if ($ownership eq 'owner') {
1.101 www 2409: # explitly asking for the current version?
2410: unless (-e $fname) {
2411: my $currentversion=¤tversion($fname);
2412: if (&thisversion($fname)==$currentversion) {
2413: if ($fname=~/^(.+)\.\d+\.(\w+(?:\.meta)*)$/) {
2414: my $root=$1;
2415: my $extension=$2;
2416: symlink($root.'.'.$extension,
2417: $root.'.'.$currentversion.'.'.$extension);
1.102 www 2418: unless ($extension=~/\.meta$/) {
2419: symlink($root.'.'.$extension.'.meta',
2420: $root.'.'.$currentversion.'.'.$extension.'.meta');
2421: }
1.101 www 2422: }
2423: }
2424: }
1.84 albertel 2425: if (-e $fname) {
2426: if (-d $fname) {
2427: $result="directory\n";
2428: } else {
2429: if (-e "$fname.$hostid{$clientip}") {&unsub($fname,$clientip);}
1.134 albertel 2430: my $now=time;
1.84 albertel 2431: my $found=&addline($fname,$hostid{$clientip},$clientip,
2432: "$hostid{$clientip}:$clientip:$now\n");
2433: if ($found) { $result="$fname\n"; }
2434: # if they were subscribed to only meta data, delete that
2435: # subscription, when you subscribe to a file you also get
2436: # the metadata
2437: unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); }
2438: $fname=~s/\/home\/httpd\/html\/res/raw/;
2439: $fname="http://$thisserver/".$fname;
2440: $result="$fname\n";
2441: }
2442: } else {
2443: $result="not_found\n";
2444: }
2445: } else {
2446: $result="rejected\n";
2447: }
2448: return $result;
2449: }
1.91 albertel 2450:
2451: sub make_passwd_file {
1.98 foxr 2452: my ($uname, $umode,$npass,$passfilename)=@_;
1.91 albertel 2453: my $result="ok\n";
2454: if ($umode eq 'krb4' or $umode eq 'krb5') {
2455: {
2456: my $pf = IO::File->new(">$passfilename");
2457: print $pf "$umode:$npass\n";
2458: }
2459: } elsif ($umode eq 'internal') {
2460: my $salt=time;
2461: $salt=substr($salt,6,2);
2462: my $ncpass=crypt($npass,$salt);
2463: {
2464: &Debug("Creating internal auth");
2465: my $pf = IO::File->new(">$passfilename");
2466: print $pf "internal:$ncpass\n";
2467: }
2468: } elsif ($umode eq 'localauth') {
2469: {
2470: my $pf = IO::File->new(">$passfilename");
2471: print $pf "localauth:$npass\n";
2472: }
2473: } elsif ($umode eq 'unix') {
2474: {
2475: my $execpath="$perlvar{'lonDaemons'}/"."lcuseradd";
2476: {
2477: &Debug("Executing external: ".$execpath);
1.98 foxr 2478: &Debug("user = ".$uname.", Password =". $npass);
1.132 matthew 2479: my $se = IO::File->new("|$execpath > $perlvar{'lonDaemons'}/logs/lcuseradd.log");
1.91 albertel 2480: print $se "$uname\n";
2481: print $se "$npass\n";
2482: print $se "$npass\n";
1.97 foxr 2483: }
2484: my $useraddok = $?;
2485: if($useraddok > 0) {
2486: &logthis("Failed lcuseradd: ".&lcuseraddstrerror($useraddok));
1.91 albertel 2487: }
2488: my $pf = IO::File->new(">$passfilename");
2489: print $pf "unix:\n";
2490: }
2491: } elsif ($umode eq 'none') {
2492: {
2493: my $pf = IO::File->new(">$passfilename");
2494: print $pf "none:\n";
2495: }
2496: } else {
2497: $result="auth_mode_error\n";
2498: }
2499: return $result;
1.121 albertel 2500: }
2501:
2502: sub sethost {
2503: my ($remotereq) = @_;
2504: my (undef,$hostid)=split(/:/,$remotereq);
2505: if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; }
2506: if ($hostip{$perlvar{'lonHostID'}} eq $hostip{$hostid}) {
2507: $currenthostid=$hostid;
2508: $currentdomainid=$hostdom{$hostid};
2509: &logthis("Setting hostid to $hostid, and domain to $currentdomainid");
2510: } else {
2511: &logthis("Requested host id $hostid not an alias of ".
2512: $perlvar{'lonHostID'}." refusing connection");
2513: return 'unable_to_set';
2514: }
2515: return 'ok';
2516: }
2517:
2518: sub version {
2519: my ($userinput)=@_;
2520: $remoteVERSION=(split(/:/,$userinput))[1];
2521: return "version:$VERSION";
1.127 albertel 2522: }
2523:
1.128 albertel 2524: #There is a copy of this in lonnet.pm
1.127 albertel 2525: sub userload {
2526: my $numusers=0;
2527: {
2528: opendir(LONIDS,$perlvar{'lonIDsDir'});
2529: my $filename;
2530: my $curtime=time;
2531: while ($filename=readdir(LONIDS)) {
2532: if ($filename eq '.' || $filename eq '..') {next;}
1.138 albertel 2533: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
2534: if ($curtime-$mtime < 3600) { $numusers++; }
1.127 albertel 2535: }
2536: closedir(LONIDS);
2537: }
2538: my $userloadpercent=0;
2539: my $maxuserload=$perlvar{'lonUserLoadLim'};
2540: if ($maxuserload) {
1.129 albertel 2541: $userloadpercent=100*$numusers/$maxuserload;
1.127 albertel 2542: }
1.130 albertel 2543: $userloadpercent=sprintf("%.2f",$userloadpercent);
1.127 albertel 2544: return $userloadpercent;
1.91 albertel 2545: }
2546:
1.61 harris41 2547: # ----------------------------------- POD (plain old documentation, CPAN style)
2548:
2549: =head1 NAME
2550:
2551: lond - "LON Daemon" Server (port "LOND" 5663)
2552:
2553: =head1 SYNOPSIS
2554:
1.74 harris41 2555: Usage: B<lond>
2556:
2557: Should only be run as user=www. This is a command-line script which
2558: is invoked by B<loncron>. There is no expectation that a typical user
2559: will manually start B<lond> from the command-line. (In other words,
2560: DO NOT START B<lond> YOURSELF.)
1.61 harris41 2561:
2562: =head1 DESCRIPTION
2563:
1.74 harris41 2564: There are two characteristics associated with the running of B<lond>,
2565: PROCESS MANAGEMENT (starting, stopping, handling child processes)
2566: and SERVER-SIDE ACTIVITIES (password authentication, user creation,
2567: subscriptions, etc). These are described in two large
2568: sections below.
2569:
2570: B<PROCESS MANAGEMENT>
2571:
1.61 harris41 2572: Preforker - server who forks first. Runs as a daemon. HUPs.
2573: Uses IDEA encryption
2574:
1.74 harris41 2575: B<lond> forks off children processes that correspond to the other servers
2576: in the network. Management of these processes can be done at the
2577: parent process level or the child process level.
2578:
2579: B<logs/lond.log> is the location of log messages.
2580:
2581: The process management is now explained in terms of linux shell commands,
2582: subroutines internal to this code, and signal assignments:
2583:
2584: =over 4
2585:
2586: =item *
2587:
2588: PID is stored in B<logs/lond.pid>
2589:
2590: This is the process id number of the parent B<lond> process.
2591:
2592: =item *
2593:
2594: SIGTERM and SIGINT
2595:
2596: Parent signal assignment:
2597: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
2598:
2599: Child signal assignment:
2600: $SIG{INT} = 'DEFAULT'; (and SIGTERM is DEFAULT also)
2601: (The child dies and a SIGALRM is sent to parent, awaking parent from slumber
2602: to restart a new child.)
2603:
2604: Command-line invocations:
2605: B<kill> B<-s> SIGTERM I<PID>
2606: B<kill> B<-s> SIGINT I<PID>
2607:
2608: Subroutine B<HUNTSMAN>:
2609: This is only invoked for the B<lond> parent I<PID>.
2610: This kills all the children, and then the parent.
2611: The B<lonc.pid> file is cleared.
2612:
2613: =item *
2614:
2615: SIGHUP
2616:
2617: Current bug:
2618: This signal can only be processed the first time
2619: on the parent process. Subsequent SIGHUP signals
2620: have no effect.
2621:
2622: Parent signal assignment:
2623: $SIG{HUP} = \&HUPSMAN;
2624:
2625: Child signal assignment:
2626: none (nothing happens)
2627:
2628: Command-line invocations:
2629: B<kill> B<-s> SIGHUP I<PID>
2630:
2631: Subroutine B<HUPSMAN>:
2632: This is only invoked for the B<lond> parent I<PID>,
2633: This kills all the children, and then the parent.
2634: The B<lond.pid> file is cleared.
2635:
2636: =item *
2637:
2638: SIGUSR1
2639:
2640: Parent signal assignment:
2641: $SIG{USR1} = \&USRMAN;
2642:
2643: Child signal assignment:
2644: $SIG{USR1}= \&logstatus;
2645:
2646: Command-line invocations:
2647: B<kill> B<-s> SIGUSR1 I<PID>
2648:
2649: Subroutine B<USRMAN>:
2650: When invoked for the B<lond> parent I<PID>,
2651: SIGUSR1 is sent to all the children, and the status of
2652: each connection is logged.
1.144 foxr 2653:
2654: =item *
2655:
2656: SIGUSR2
2657:
2658: Parent Signal assignment:
2659: $SIG{USR2} = \&UpdateHosts
2660:
2661: Child signal assignment:
2662: NONE
2663:
1.74 harris41 2664:
2665: =item *
2666:
2667: SIGCHLD
2668:
2669: Parent signal assignment:
2670: $SIG{CHLD} = \&REAPER;
2671:
2672: Child signal assignment:
2673: none
2674:
2675: Command-line invocations:
2676: B<kill> B<-s> SIGCHLD I<PID>
2677:
2678: Subroutine B<REAPER>:
2679: This is only invoked for the B<lond> parent I<PID>.
2680: Information pertaining to the child is removed.
2681: The socket port is cleaned up.
2682:
2683: =back
2684:
2685: B<SERVER-SIDE ACTIVITIES>
2686:
2687: Server-side information can be accepted in an encrypted or non-encrypted
2688: method.
2689:
2690: =over 4
2691:
2692: =item ping
2693:
2694: Query a client in the hosts.tab table; "Are you there?"
2695:
2696: =item pong
2697:
2698: Respond to a ping query.
2699:
2700: =item ekey
2701:
2702: Read in encrypted key, make cipher. Respond with a buildkey.
2703:
2704: =item load
2705:
2706: Respond with CPU load based on a computation upon /proc/loadavg.
2707:
2708: =item currentauth
2709:
2710: Reply with current authentication information (only over an
2711: encrypted channel).
2712:
2713: =item auth
2714:
2715: Only over an encrypted channel, reply as to whether a user's
2716: authentication information can be validated.
2717:
2718: =item passwd
2719:
2720: Allow for a password to be set.
2721:
2722: =item makeuser
2723:
2724: Make a user.
2725:
2726: =item passwd
2727:
2728: Allow for authentication mechanism and password to be changed.
2729:
2730: =item home
1.61 harris41 2731:
1.74 harris41 2732: Respond to a question "are you the home for a given user?"
2733:
2734: =item update
2735:
2736: Update contents of a subscribed resource.
2737:
2738: =item unsubscribe
2739:
2740: The server is unsubscribing from a resource.
2741:
2742: =item subscribe
2743:
2744: The server is subscribing to a resource.
2745:
2746: =item log
2747:
2748: Place in B<logs/lond.log>
2749:
2750: =item put
2751:
2752: stores hash in namespace
2753:
2754: =item rolesput
2755:
2756: put a role into a user's environment
2757:
2758: =item get
2759:
2760: returns hash with keys from array
2761: reference filled in from namespace
2762:
2763: =item eget
2764:
2765: returns hash with keys from array
2766: reference filled in from namesp (encrypts the return communication)
2767:
2768: =item rolesget
2769:
2770: get a role from a user's environment
2771:
2772: =item del
2773:
2774: deletes keys out of array from namespace
2775:
2776: =item keys
2777:
2778: returns namespace keys
2779:
2780: =item dump
2781:
2782: dumps the complete (or key matching regexp) namespace into a hash
2783:
2784: =item store
2785:
2786: stores hash permanently
2787: for this url; hashref needs to be given and should be a \%hashname; the
2788: remaining args aren't required and if they aren't passed or are '' they will
2789: be derived from the ENV
2790:
2791: =item restore
2792:
2793: returns a hash for a given url
2794:
2795: =item querysend
2796:
2797: Tells client about the lonsql process that has been launched in response
2798: to a sent query.
2799:
2800: =item queryreply
2801:
2802: Accept information from lonsql and make appropriate storage in temporary
2803: file space.
2804:
2805: =item idput
2806:
2807: Defines usernames as corresponding to IDs. (These "IDs" are unique identifiers
2808: for each student, defined perhaps by the institutional Registrar.)
2809:
2810: =item idget
2811:
2812: Returns usernames corresponding to IDs. (These "IDs" are unique identifiers
2813: for each student, defined perhaps by the institutional Registrar.)
2814:
2815: =item tmpput
2816:
2817: Accept and store information in temporary space.
2818:
2819: =item tmpget
2820:
2821: Send along temporarily stored information.
2822:
2823: =item ls
2824:
2825: List part of a user's directory.
2826:
1.135 foxr 2827: =item pushtable
2828:
2829: Pushes a file in /home/httpd/lonTab directory. Currently limited to:
2830: hosts.tab and domain.tab. The old file is copied to *.tab.backup but
2831: must be restored manually in case of a problem with the new table file.
2832: pushtable requires that the request be encrypted and validated via
2833: ValidateManager. The form of the command is:
2834: enc:pushtable tablename <tablecontents> \n
2835: where pushtable, tablename and <tablecontents> will be encrypted, but \n is a
2836: cleartext newline.
2837:
1.74 harris41 2838: =item Hanging up (exit or init)
2839:
2840: What to do when a client tells the server that they (the client)
2841: are leaving the network.
2842:
2843: =item unknown command
2844:
2845: If B<lond> is sent an unknown command (not in the list above),
2846: it replys to the client "unknown_cmd".
1.135 foxr 2847:
1.74 harris41 2848:
2849: =item UNKNOWN CLIENT
2850:
2851: If the anti-spoofing algorithm cannot verify the client,
2852: the client is rejected (with a "refused" message sent
2853: to the client, and the connection is closed.
2854:
2855: =back
1.61 harris41 2856:
2857: =head1 PREREQUISITES
2858:
2859: IO::Socket
2860: IO::File
2861: Apache::File
2862: Symbol
2863: POSIX
2864: Crypt::IDEA
2865: LWP::UserAgent()
2866: GDBM_File
2867: Authen::Krb4
1.91 albertel 2868: Authen::Krb5
1.61 harris41 2869:
2870: =head1 COREQUISITES
2871:
2872: =head1 OSNAMES
2873:
2874: linux
2875:
2876: =head1 SCRIPT CATEGORIES
2877:
2878: Server/Process
2879:
2880: =cut
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