Annotation of loncom/lond, revision 1.150
1.1 albertel 1: #!/usr/bin/perl
2: # The LearningOnline Network
3: # lond "LON Daemon" Server (port "LOND" 5663)
1.60 www 4: #
1.150 ! foxr 5: # $Id: lond,v 1.149 2003/09/30 09:44:13 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 $
1.150 ! foxr 63: # Revision 1.149 2003/09/30 09:44:13 foxr
! 64: # Tested UpdateHosts ability to
! 65: # - Remove live children for hosts that are no longer in the hosts.tab
! 66: # - Remove live children for hosts whose IPs have changed in the hosts.tab
! 67: #
1.149 foxr 68: # Revision 1.148 2003/09/29 10:09:18 foxr
69: # Put in logic to reinit lond itself (except for apache reload). I don't believe
70: # this logic works correctly yet, however lond still does everything it used to doso I'll do the commit anyway.
71: #
1.148 foxr 72: # Revision 1.147 2003/09/23 11:23:31 foxr
73: # Comlplete implementation of reinit functionality. Must still implement
74: # the actual initialization functionality, but the process can now
75: # receive the request and either invoke the appropriate internal function or
76: # signal the correct lonc.
77: #
1.147 foxr 78: # Revision 1.146 2003/09/16 10:28:14 foxr
79: # ReinitProcess - decode the process selector and produce the associated pid
80: # filename. Note: While it is possible to test that valid process selectors are
81: # handled properly I am not able to test that invalid process selectors produce
82: # the appropriate error as lonManage also blocks the use of invalid process selectors.
83: #
1.146 foxr 84: # Revision 1.145 2003/09/16 10:13:20 foxr
85: # Added ReinitProcess function to oversee the parsing and processing of the
86: # reinit:<process> client request.
87: #
1.145 foxr 88: # Revision 1.144 2003/09/16 09:47:01 foxr
89: # Added skeletal support for SIGUSR2 (update hosts.tab)
90: #
1.144 foxr 91: # Revision 1.143 2003/09/15 10:03:52 foxr
92: # Completed and tested code for pushfile.
93: #
1.143 foxr 94: # Revision 1.142 2003/09/09 20:47:46 www
95: # Permanently store chatroom entries in chatroom.log
96: #
1.142 www 97: # Revision 1.141 2003/09/08 10:32:07 foxr
98: # Added PushFile sub This sub oversees the push of a new configuration table file
99: # Currently supported files are:
100: # - hosts.tab (transaction pushfile:hosts:contents)
101: # - domain.tab (transaction pushfile:domain:contents)
102: #
1.141 foxr 103:
1.54 harris41 104:
1.134 albertel 105: use strict;
1.80 harris41 106: use lib '/home/httpd/lib/perl/';
107: use LONCAPA::Configuration;
108:
1.1 albertel 109: use IO::Socket;
110: use IO::File;
1.126 albertel 111: #use Apache::File;
1.1 albertel 112: use Symbol;
113: use POSIX;
114: use Crypt::IDEA;
115: use LWP::UserAgent();
1.3 www 116: use GDBM_File;
117: use Authen::Krb4;
1.91 albertel 118: use Authen::Krb5;
1.49 albertel 119: use lib '/home/httpd/lib/perl/';
120: use localauth;
1.143 foxr 121: use File::Copy;
1.1 albertel 122:
1.77 foxr 123: my $DEBUG = 0; # Non zero to enable debug log entries.
124:
1.57 www 125: my $status='';
126: my $lastlog='';
127:
1.150 ! foxr 128: my $VERSION='$Revision: 1.149 $'; #' stupid emacs
1.121 albertel 129: my $remoteVERSION;
1.115 albertel 130: my $currenthostid;
131: my $currentdomainid;
1.134 albertel 132:
133: my $client;
1.140 foxr 134: my $clientip;
135:
1.134 albertel 136: my $server;
137: my $thisserver;
138:
139: my %hostid;
140: my %hostdom;
141: my %hostip;
1.141 foxr 142: my %perlvar; # Will have the apache conf defined perl vars.
1.134 albertel 143:
1.96 foxr 144: #
145: # The array below are password error strings."
146: #
1.97 foxr 147: my $lastpwderror = 13; # Largest error number from lcpasswd.
1.96 foxr 148: my @passwderrors = ("ok",
149: "lcpasswd must be run as user 'www'",
150: "lcpasswd got incorrect number of arguments",
151: "lcpasswd did not get the right nubmer of input text lines",
152: "lcpasswd too many simultaneous pwd changes in progress",
153: "lcpasswd User does not exist.",
154: "lcpasswd Incorrect current passwd",
155: "lcpasswd Unable to su to root.",
156: "lcpasswd Cannot set new passwd.",
157: "lcpasswd Username has invalid characters",
1.97 foxr 158: "lcpasswd Invalid characters in password",
159: "11", "12",
160: "lcpasswd Password mismatch");
161:
162:
163: # The array below are lcuseradd error strings.:
164:
165: my $lastadderror = 13;
166: my @adderrors = ("ok",
167: "User ID mismatch, lcuseradd must run as user www",
168: "lcuseradd Incorrect number of command line parameters must be 3",
169: "lcuseradd Incorrect number of stdinput lines, must be 3",
170: "lcuseradd Too many other simultaneous pwd changes in progress",
171: "lcuseradd User does not exist",
172: "lcuseradd Unabel to mak ewww member of users's group",
173: "lcuseradd Unable to su to root",
174: "lcuseradd Unable to set password",
175: "lcuseradd Usrname has invbalid charcters",
176: "lcuseradd Password has an invalid character",
177: "lcuseradd User already exists",
178: "lcuseradd Could not add user.",
179: "lcuseradd Password mismatch");
180:
1.96 foxr 181:
182: #
1.140 foxr 183: # GetCertificate: Given a transaction that requires a certificate,
184: # this function will extract the certificate from the transaction
185: # request. Note that at this point, the only concept of a certificate
186: # is the hostname to which we are connected.
187: #
188: # Parameter:
189: # request - The request sent by our client (this parameterization may
190: # need to change when we really use a certificate granting
191: # authority.
192: #
193: sub GetCertificate {
194: my $request = shift;
195:
196: return $clientip;
197: }
198:
199:
200: #
201: # ValidManager: Determines if a given certificate represents a valid manager.
202: # in this primitive implementation, the 'certificate' is
203: # just the connecting loncapa client name. This is checked
204: # against a valid client list in the configuration.
205: #
206: #
207: sub ValidManager {
208: my $certificate = shift;
209:
210: my $hostentry = $hostid{$certificate};
211: if ($hostentry ne undef) {
212: &logthis('<font color="yellow">Authenticating manager'.
213: " $hostentry</font>");
214: return 1;
215: } else {
216: &logthis('<font color="red"> Failed manager authentication '.
217: "$certificate </font>");
218: }
219: }
220: #
1.143 foxr 221: # CopyFile: Called as part of the process of installing a
222: # new configuration file. This function copies an existing
223: # file to a backup file.
224: # Parameters:
225: # oldfile - Name of the file to backup.
226: # newfile - Name of the backup file.
227: # Return:
228: # 0 - Failure (errno has failure reason).
229: # 1 - Success.
230: #
231: sub CopyFile {
232: my $oldfile = shift;
233: my $newfile = shift;
234:
235: # The file must exist:
236:
237: if(-e $oldfile) {
238:
239: # Read the old file.
240:
241: my $oldfh = IO::File->new("< $oldfile");
242: if(!$oldfh) {
243: return 0;
244: }
245: my @contents = <$oldfh>; # Suck in the entire file.
246:
247: # write the backup file:
248:
249: my $newfh = IO::File->new("> $newfile");
250: if(!(defined $newfh)){
251: return 0;
252: }
253: my $lines = scalar @contents;
254: for (my $i =0; $i < $lines; $i++) {
255: print $newfh ($contents[$i]);
256: }
257:
258: $oldfh->close;
259: $newfh->close;
260:
261: chmod(0660, $newfile);
262:
263: return 1;
264:
265: } else {
266: return 0;
267: }
268: }
269:
270: #
271: # InstallFile: Called to install an administrative file:
272: # - The file is created with <name>.tmp
273: # - The <name>.tmp file is then mv'd to <name>
274: # This lugubrious procedure is done to ensure that we are never without
275: # a valid, even if dated, version of the file regardless of who crashes
276: # and when the crash occurs.
277: #
278: # Parameters:
279: # Name of the file
280: # File Contents.
281: # Return:
282: # nonzero - success.
283: # 0 - failure and $! has an errno.
284: #
285: sub InstallFile {
286: my $Filename = shift;
287: my $Contents = shift;
288: my $TempFile = $Filename.".tmp";
289:
290: # Open the file for write:
291:
292: my $fh = IO::File->new("> $TempFile"); # Write to temp.
293: if(!(defined $fh)) {
294: &logthis('<font color="red"> Unable to create '.$TempFile."</font>");
295: return 0;
296: }
297: # write the contents of the file:
298:
299: print $fh ($Contents);
300: $fh->close; # In case we ever have a filesystem w. locking
301:
302: chmod(0660, $TempFile);
303:
304: # Now we can move install the file in position.
305:
306: move($TempFile, $Filename);
307:
308: return 1;
309: }
310:
311: #
1.141 foxr 312: # PushFile: Called to do an administrative push of a file.
313: # - Ensure the file being pushed is one we support.
314: # - Backup the old file to <filename.saved>
315: # - Separate the contents of the new file out from the
316: # rest of the request.
317: # - Write the new file.
318: # Parameter:
319: # Request - The entire user request. This consists of a : separated
320: # string pushfile:tablename:contents.
321: # NOTE: The contents may have :'s in it as well making things a bit
322: # more interesting... but not much.
323: # Returns:
324: # String to send to client ("ok" or "refused" if bad file).
325: #
326: sub PushFile {
327: my $request = shift;
328: my ($command, $filename, $contents) = split(":", $request, 3);
329:
330: # At this point in time, pushes for only the following tables are
331: # supported:
332: # hosts.tab ($filename eq host).
333: # domain.tab ($filename eq domain).
334: # Construct the destination filename or reject the request.
335: #
336: # lonManage is supposed to ensure this, however this session could be
337: # part of some elaborate spoof that managed somehow to authenticate.
338: #
339:
340: my $tablefile = $perlvar{'lonTabDir'}.'/'; # need to precede with dir.
341: if ($filename eq "host") {
342: $tablefile .= "hosts.tab";
343: } elsif ($filename eq "domain") {
344: $tablefile .= "domain.tab";
345: } else {
346: return "refused";
347: }
348: #
349: # >copy< the old table to the backup table
350: # don't rename in case system crashes/reboots etc. in the time
351: # window between a rename and write.
352: #
353: my $backupfile = $tablefile;
354: $backupfile =~ s/\.tab$/.old/;
1.143 foxr 355: if(!CopyFile($tablefile, $backupfile)) {
356: &logthis('<font color="green"> CopyFile from '.$tablefile." to ".$backupfile." failed </font>");
357: return "error:$!";
358: }
1.141 foxr 359: &logthis('<font color="green"> Pushfile: backed up '
360: .$tablefile." to $backupfile</font>");
361:
362: # Install the new file:
363:
1.143 foxr 364: if(!InstallFile($tablefile, $contents)) {
365: &logthis('<font color="red"> Pushfile: unable to install '
1.145 foxr 366: .$tablefile." $! </font>");
1.143 foxr 367: return "error:$!";
368: }
369: else {
370: &logthis('<font color="green"> Installed new '.$tablefile
371: ."</font>");
372:
373: }
374:
1.141 foxr 375:
376: # Indicate success:
377:
378: return "ok";
379:
380: }
1.145 foxr 381:
382: #
383: # Called to re-init either lonc or lond.
384: #
385: # Parameters:
386: # request - The full request by the client. This is of the form
387: # reinit:<process>
388: # where <process> is allowed to be either of
389: # lonc or lond
390: #
391: # Returns:
392: # The string to be sent back to the client either:
393: # ok - Everything worked just fine.
394: # error:why - There was a failure and why describes the reason.
395: #
396: #
397: sub ReinitProcess {
398: my $request = shift;
399:
1.146 foxr 400:
401: # separate the request (reinit) from the process identifier and
402: # validate it producing the name of the .pid file for the process.
403: #
404: #
405: my ($junk, $process) = split(":", $request);
1.147 foxr 406: my $processpidfile = $perlvar{'lonDaemons'}.'/logs/';
1.146 foxr 407: if($process eq 'lonc') {
408: $processpidfile = $processpidfile."lonc.pid";
1.147 foxr 409: if (!open(PIDFILE, "< $processpidfile")) {
410: return "error:Open failed for $processpidfile";
411: }
412: my $loncpid = <PIDFILE>;
413: close(PIDFILE);
414: logthis('<font color="red"> Reinitializing lonc pid='.$loncpid
415: ."</font>");
416: kill("USR2", $loncpid);
1.146 foxr 417: } elsif ($process eq 'lond') {
1.147 foxr 418: logthis('<font color="red"> Reinitializing self (lond) </font>');
419: &UpdateHosts; # Lond is us!!
1.146 foxr 420: } else {
421: &logthis('<font color="yellow" Invalid reinit request for '.$process
422: ."</font>");
423: return "error:Invalid process identifier $process";
424: }
1.145 foxr 425: return 'ok';
426: }
427:
1.141 foxr 428: #
1.96 foxr 429: # Convert an error return code from lcpasswd to a string value.
430: #
431: sub lcpasswdstrerror {
432: my $ErrorCode = shift;
1.97 foxr 433: if(($ErrorCode < 0) || ($ErrorCode > $lastpwderror)) {
1.96 foxr 434: return "lcpasswd Unrecognized error return value ".$ErrorCode;
435: } else {
1.98 foxr 436: return $passwderrors[$ErrorCode];
1.96 foxr 437: }
438: }
439:
1.97 foxr 440: #
441: # Convert an error return code from lcuseradd to a string value:
442: #
443: sub lcuseraddstrerror {
444: my $ErrorCode = shift;
445: if(($ErrorCode < 0) || ($ErrorCode > $lastadderror)) {
446: return "lcuseradd - Unrecognized error code: ".$ErrorCode;
447: } else {
1.98 foxr 448: return $adderrors[$ErrorCode];
1.97 foxr 449: }
450: }
451:
1.23 harris41 452: # grabs exception and records it to log before exiting
453: sub catchexception {
1.27 albertel 454: my ($error)=@_;
1.25 www 455: $SIG{'QUIT'}='DEFAULT';
456: $SIG{__DIE__}='DEFAULT';
1.23 harris41 457: &logthis("<font color=red>CRITICAL: "
1.134 albertel 458: ."ABNORMAL EXIT. Child $$ for server $thisserver died through "
1.27 albertel 459: ."a crash with this error msg->[$error]</font>");
1.57 www 460: &logthis('Famous last words: '.$status.' - '.$lastlog);
1.27 albertel 461: if ($client) { print $client "error: $error\n"; }
1.59 www 462: $server->close();
1.27 albertel 463: die($error);
1.23 harris41 464: }
465:
1.63 www 466: sub timeout {
467: &logthis("<font color=ref>CRITICAL: TIME OUT ".$$."</font>");
468: &catchexception('Timeout');
469: }
1.22 harris41 470: # -------------------------------- Set signal handlers to record abnormal exits
471:
472: $SIG{'QUIT'}=\&catchexception;
473: $SIG{__DIE__}=\&catchexception;
474:
1.81 matthew 475: # ---------------------------------- Read loncapa_apache.conf and loncapa.conf
1.95 harris41 476: &status("Read loncapa.conf and loncapa_apache.conf");
477: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
1.141 foxr 478: %perlvar=%{$perlvarref};
1.80 harris41 479: undef $perlvarref;
1.19 www 480:
1.35 harris41 481: # ----------------------------- Make sure this process is running from user=www
482: my $wwwid=getpwnam('www');
483: if ($wwwid!=$<) {
1.134 albertel 484: my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
485: my $subj="LON: $currenthostid User ID mismatch";
1.37 harris41 486: system("echo 'User ID mismatch. lond must be run as user www.' |\
1.35 harris41 487: mailto $emailto -s '$subj' > /dev/null");
488: exit 1;
489: }
490:
1.19 www 491: # --------------------------------------------- Check if other instance running
492:
493: my $pidfile="$perlvar{'lonDaemons'}/logs/lond.pid";
494:
495: if (-e $pidfile) {
496: my $lfh=IO::File->new("$pidfile");
497: my $pide=<$lfh>;
498: chomp($pide);
1.29 harris41 499: if (kill 0 => $pide) { die "already running"; }
1.19 www 500: }
1.1 albertel 501:
502: # ------------------------------------------------------------- Read hosts file
503:
504:
505:
506: # establish SERVER socket, bind and listen.
507: $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},
508: Type => SOCK_STREAM,
509: Proto => 'tcp',
510: Reuse => 1,
511: Listen => 10 )
1.29 harris41 512: or die "making socket: $@\n";
1.1 albertel 513:
514: # --------------------------------------------------------- Do global variables
515:
516: # global variables
517:
1.134 albertel 518: my %children = (); # keys are current child process IDs
519: my $children = 0; # current number of children
1.1 albertel 520:
521: sub REAPER { # takes care of dead children
522: $SIG{CHLD} = \&REAPER;
523: my $pid = wait;
1.67 albertel 524: if (defined($children{$pid})) {
525: &logthis("Child $pid died");
526: $children --;
527: delete $children{$pid};
528: } else {
529: &logthis("Unknown Child $pid died");
530: }
1.1 albertel 531: }
532:
533: sub HUNTSMAN { # signal handler for SIGINT
534: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
535: kill 'INT' => keys %children;
1.59 www 536: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.1 albertel 537: my $execdir=$perlvar{'lonDaemons'};
538: unlink("$execdir/logs/lond.pid");
1.9 www 539: &logthis("<font color=red>CRITICAL: Shutting down</font>");
1.1 albertel 540: exit; # clean up with dignity
541: }
542:
543: sub HUPSMAN { # signal handler for SIGHUP
544: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
545: kill 'INT' => keys %children;
1.59 www 546: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.9 www 547: &logthis("<font color=red>CRITICAL: Restarting</font>");
1.134 albertel 548: my $execdir=$perlvar{'lonDaemons'};
1.30 harris41 549: unlink("$execdir/logs/lond.pid");
1.1 albertel 550: exec("$execdir/lond"); # here we go again
551: }
552:
1.144 foxr 553: #
1.148 foxr 554: # Kill off hashes that describe the host table prior to re-reading it.
555: # Hashes affected are:
556: # %hostid, %hostdom %hostip
557: #
558: sub KillHostHashes {
559: foreach my $key (keys %hostid) {
560: delete $hostid{$key};
561: }
562: foreach my $key (keys %hostdom) {
563: delete $hostdom{$key};
564: }
565: foreach my $key (keys %hostip) {
566: delete $hostip{$key};
567: }
568: }
569: #
570: # Read in the host table from file and distribute it into the various hashes:
571: #
572: # - %hostid - Indexed by IP, the loncapa hostname.
573: # - %hostdom - Indexed by loncapa hostname, the domain.
574: # - %hostip - Indexed by hostid, the Ip address of the host.
575: sub ReadHostTable {
576:
577: open (CONFIG,"$perlvar{'lonTabDir'}/hosts.tab") || die "Can't read host file";
578:
579: while (my $configline=<CONFIG>) {
580: my ($id,$domain,$role,$name,$ip)=split(/:/,$configline);
581: chomp($ip); $ip=~s/\D+$//;
582: $hostid{$ip}=$id;
583: $hostdom{$id}=$domain;
584: $hostip{$id}=$ip;
585: if ($id eq $perlvar{'lonHostID'}) { $thisserver=$name; }
586: }
587: close(CONFIG);
588: }
589: #
590: # Reload the Apache daemon's state.
1.150 ! foxr 591: # This is done by invoking /home/httpd/perl/apachereload
! 592: # a setuid perl script that can be root for us to do this job.
1.148 foxr 593: #
594: sub ReloadApache {
1.150 ! foxr 595: my $execdir = $perlvar{'lonDaemons'};
! 596: my $script = $execdir."/apachereload";
! 597: system($script);
1.148 foxr 598: }
599:
600: #
1.144 foxr 601: # Called in response to a USR2 signal.
602: # - Reread hosts.tab
603: # - All children connected to hosts that were removed from hosts.tab
604: # are killed via SIGINT
605: # - All children connected to previously existing hosts are sent SIGUSR1
606: # - Our internal hosts hash is updated to reflect the new contents of
607: # hosts.tab causing connections from hosts added to hosts.tab to
608: # now be honored.
609: #
610: sub UpdateHosts {
1.147 foxr 611: logthis('<font color="blue"> Updating connections </font>');
1.148 foxr 612: #
613: # The %children hash has the set of IP's we currently have children
614: # on. These need to be matched against records in the hosts.tab
615: # Any ip's no longer in the table get killed off they correspond to
616: # either dropped or changed hosts. Note that the re-read of the table
617: # will take care of new and changed hosts as connections come into being.
618:
619:
620: KillHostHashes;
621: ReadHostTable;
622:
623: foreach my $child (keys %children) {
624: my $childip = $children{$child};
625: if(!$hostid{$childip}) {
1.149 foxr 626: logthis('<font color="blue"> UpdateHosts killing child '
627: ." $child for ip $childip </font>");
1.148 foxr 628: kill('INT', $child);
1.149 foxr 629: } else {
630: logthis('<font color="green"> keeping child for ip '
631: ." $childip (pid=$child) </font>");
1.148 foxr 632: }
633: }
634: ReloadApache;
1.144 foxr 635: }
636:
1.148 foxr 637:
1.57 www 638: sub checkchildren {
639: &initnewstatus();
640: &logstatus();
641: &logthis('Going to check on the children');
1.134 albertel 642: my $docdir=$perlvar{'lonDocRoot'};
1.61 harris41 643: foreach (sort keys %children) {
1.57 www 644: sleep 1;
645: unless (kill 'USR1' => $_) {
646: &logthis ('Child '.$_.' is dead');
647: &logstatus($$.' is dead');
648: }
1.61 harris41 649: }
1.63 www 650: sleep 5;
1.113 albertel 651: $SIG{ALRM} = sub { die "timeout" };
652: $SIG{__DIE__} = 'DEFAULT';
1.63 www 653: foreach (sort keys %children) {
654: unless (-e "$docdir/lon-status/londchld/$_.txt") {
1.113 albertel 655: eval {
656: alarm(300);
1.63 www 657: &logthis('Child '.$_.' did not respond');
1.67 albertel 658: kill 9 => $_;
1.131 albertel 659: #$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
660: #$subj="LON: $currenthostid killed lond process $_";
661: #my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null`;
662: #$execdir=$perlvar{'lonDaemons'};
663: #$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_`;
1.113 albertel 664: alarm(0);
665: }
1.63 www 666: }
667: }
1.113 albertel 668: $SIG{ALRM} = 'DEFAULT';
669: $SIG{__DIE__} = \&cathcexception;
1.57 www 670: }
671:
1.1 albertel 672: # --------------------------------------------------------------------- Logging
673:
674: sub logthis {
675: my $message=shift;
676: my $execdir=$perlvar{'lonDaemons'};
677: my $fh=IO::File->new(">>$execdir/logs/lond.log");
678: my $now=time;
679: my $local=localtime($now);
1.58 www 680: $lastlog=$local.': '.$message;
1.1 albertel 681: print $fh "$local ($$): $message\n";
682: }
683:
1.77 foxr 684: # ------------------------- Conditional log if $DEBUG true.
685: sub Debug {
686: my $message = shift;
687: if($DEBUG) {
688: &logthis($message);
689: }
690: }
1.57 www 691: # ------------------------------------------------------------------ Log status
692:
693: sub logstatus {
694: my $docdir=$perlvar{'lonDocRoot'};
1.63 www 695: {
1.57 www 696: my $fh=IO::File->new(">>$docdir/lon-status/londstatus.txt");
1.115 albertel 697: print $fh $$."\t".$currenthostid."\t".$status."\t".$lastlog."\n";
1.63 www 698: $fh->close();
699: }
700: {
701: my $fh=IO::File->new(">$docdir/lon-status/londchld/$$.txt");
702: print $fh $status."\n".$lastlog."\n".time;
703: $fh->close();
704: }
1.57 www 705: }
706:
707: sub initnewstatus {
708: my $docdir=$perlvar{'lonDocRoot'};
709: my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt");
710: my $now=time;
711: my $local=localtime($now);
712: print $fh "LOND status $local - parent $$\n\n";
1.64 www 713: opendir(DIR,"$docdir/lon-status/londchld");
1.134 albertel 714: while (my $filename=readdir(DIR)) {
1.64 www 715: unlink("$docdir/lon-status/londchld/$filename");
716: }
717: closedir(DIR);
1.57 www 718: }
719:
720: # -------------------------------------------------------------- Status setting
721:
722: sub status {
723: my $what=shift;
724: my $now=time;
725: my $local=localtime($now);
726: $status=$local.': '.$what;
1.103 www 727: $0='lond: '.$what.' '.$local;
1.57 www 728: }
1.11 www 729:
730: # -------------------------------------------------------- Escape Special Chars
731:
732: sub escape {
733: my $str=shift;
734: $str =~ s/(\W)/"%".unpack('H2',$1)/eg;
735: return $str;
736: }
737:
738: # ----------------------------------------------------- Un-Escape Special Chars
739:
740: sub unescape {
741: my $str=shift;
742: $str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
743: return $str;
744: }
745:
1.1 albertel 746: # ----------------------------------------------------------- Send USR1 to lonc
747:
748: sub reconlonc {
749: my $peerfile=shift;
750: &logthis("Trying to reconnect for $peerfile");
751: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
752: if (my $fh=IO::File->new("$loncfile")) {
753: my $loncpid=<$fh>;
754: chomp($loncpid);
755: if (kill 0 => $loncpid) {
756: &logthis("lonc at pid $loncpid responding, sending USR1");
757: kill USR1 => $loncpid;
758: } else {
1.9 www 759: &logthis(
760: "<font color=red>CRITICAL: "
761: ."lonc at pid $loncpid not responding, giving up</font>");
1.1 albertel 762: }
763: } else {
1.9 www 764: &logthis('<font color=red>CRITICAL: lonc not running, giving up</font>');
1.1 albertel 765: }
766: }
767:
768: # -------------------------------------------------- Non-critical communication
1.11 www 769:
1.1 albertel 770: sub subreply {
771: my ($cmd,$server)=@_;
772: my $peerfile="$perlvar{'lonSockDir'}/$server";
773: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
774: Type => SOCK_STREAM,
775: Timeout => 10)
776: or return "con_lost";
777: print $sclient "$cmd\n";
778: my $answer=<$sclient>;
779: chomp($answer);
780: if (!$answer) { $answer="con_lost"; }
781: return $answer;
782: }
783:
784: sub reply {
785: my ($cmd,$server)=@_;
786: my $answer;
1.115 albertel 787: if ($server ne $currenthostid) {
1.1 albertel 788: $answer=subreply($cmd,$server);
789: if ($answer eq 'con_lost') {
790: $answer=subreply("ping",$server);
791: if ($answer ne $server) {
1.115 albertel 792: &logthis("sub reply: answer != server answer is $answer, server is $server");
1.1 albertel 793: &reconlonc("$perlvar{'lonSockDir'}/$server");
794: }
795: $answer=subreply($cmd,$server);
796: }
797: } else {
798: $answer='self_reply';
799: }
800: return $answer;
801: }
802:
1.13 www 803: # -------------------------------------------------------------- Talk to lonsql
804:
1.12 harris41 805: sub sqlreply {
806: my ($cmd)=@_;
807: my $answer=subsqlreply($cmd);
808: if ($answer eq 'con_lost') { $answer=subsqlreply($cmd); }
809: return $answer;
810: }
811:
812: sub subsqlreply {
813: my ($cmd)=@_;
814: my $unixsock="mysqlsock";
815: my $peerfile="$perlvar{'lonSockDir'}/$unixsock";
816: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
817: Type => SOCK_STREAM,
818: Timeout => 10)
819: or return "con_lost";
820: print $sclient "$cmd\n";
821: my $answer=<$sclient>;
822: chomp($answer);
823: if (!$answer) { $answer="con_lost"; }
824: return $answer;
825: }
826:
1.1 albertel 827: # -------------------------------------------- Return path to profile directory
1.11 www 828:
1.1 albertel 829: sub propath {
830: my ($udom,$uname)=@_;
831: $udom=~s/\W//g;
832: $uname=~s/\W//g;
1.16 www 833: my $subdir=$uname.'__';
1.1 albertel 834: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
835: my $proname="$perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
836: return $proname;
837: }
838:
839: # --------------------------------------- Is this the home server of an author?
1.11 www 840:
1.1 albertel 841: sub ishome {
842: my $author=shift;
843: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
844: my ($udom,$uname)=split(/\//,$author);
845: my $proname=propath($udom,$uname);
846: if (-e $proname) {
847: return 'owner';
848: } else {
849: return 'not_owner';
850: }
851: }
852:
853: # ======================================================= Continue main program
854: # ---------------------------------------------------- Fork once and dissociate
855:
1.134 albertel 856: my $fpid=fork;
1.1 albertel 857: exit if $fpid;
1.29 harris41 858: die "Couldn't fork: $!" unless defined ($fpid);
1.1 albertel 859:
1.29 harris41 860: POSIX::setsid() or die "Can't start new session: $!";
1.1 albertel 861:
862: # ------------------------------------------------------- Write our PID on disk
863:
1.134 albertel 864: my $execdir=$perlvar{'lonDaemons'};
1.1 albertel 865: open (PIDSAVE,">$execdir/logs/lond.pid");
866: print PIDSAVE "$$\n";
867: close(PIDSAVE);
1.9 www 868: &logthis("<font color=red>CRITICAL: ---------- Starting ----------</font>");
1.57 www 869: &status('Starting');
1.1 albertel 870:
1.106 foxr 871:
1.1 albertel 872:
873: # ----------------------------------------------------- Install signal handlers
874:
1.57 www 875:
1.1 albertel 876: $SIG{CHLD} = \&REAPER;
877: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
878: $SIG{HUP} = \&HUPSMAN;
1.57 www 879: $SIG{USR1} = \&checkchildren;
1.144 foxr 880: $SIG{USR2} = \&UpdateHosts;
1.106 foxr 881:
1.148 foxr 882: # Read the host hashes:
883:
884: ReadHostTable;
1.106 foxr 885:
886: # --------------------------------------------------------------
887: # Accept connections. When a connection comes in, it is validated
888: # and if good, a child process is created to process transactions
889: # along the connection.
890:
1.1 albertel 891: while (1) {
1.106 foxr 892: $client = $server->accept() or next;
893: make_new_child($client);
1.1 albertel 894: }
895:
896: sub make_new_child {
897: my $pid;
898: my $cipher;
899: my $sigset;
1.106 foxr 900:
901: $client = shift;
1.1 albertel 902: &logthis("Attempting to start child");
903: # block signal for fork
904: $sigset = POSIX::SigSet->new(SIGINT);
905: sigprocmask(SIG_BLOCK, $sigset)
1.29 harris41 906: or die "Can't block SIGINT for fork: $!\n";
1.134 albertel 907:
1.29 harris41 908: die "fork: $!" unless defined ($pid = fork);
1.148 foxr 909:
910: $client->sockopt(SO_KEEPALIVE, 1); # Enable monitoring of
911: # connection liveness.
912:
913: #
914: # Figure out who we're talking to so we can record the peer in
915: # the pid hash.
916: #
917: my $caller = getpeername($client);
918: my ($port,$iaddr)=unpack_sockaddr_in($caller);
919: $clientip=inet_ntoa($iaddr);
1.1 albertel 920:
921: if ($pid) {
922: # Parent records the child's birth and returns.
923: sigprocmask(SIG_UNBLOCK, $sigset)
1.29 harris41 924: or die "Can't unblock SIGINT for fork: $!\n";
1.148 foxr 925: $children{$pid} = $clientip;
1.1 albertel 926: $children++;
1.57 www 927: &status('Started child '.$pid);
1.1 albertel 928: return;
929: } else {
930: # Child can *not* return from this subroutine.
931: $SIG{INT} = 'DEFAULT'; # make SIGINT kill us as it did before
1.126 albertel 932: $SIG{CHLD} = 'DEFAULT'; #make this default so that pwauth returns
933: #don't get intercepted
1.57 www 934: $SIG{USR1}= \&logstatus;
1.63 www 935: $SIG{ALRM}= \&timeout;
1.57 www 936: $lastlog='Forked ';
937: $status='Forked';
938:
1.1 albertel 939: # unblock signals
940: sigprocmask(SIG_UNBLOCK, $sigset)
1.29 harris41 941: or die "Can't unblock SIGINT for fork: $!\n";
1.13 www 942:
1.134 albertel 943: my $tmpsnum=0;
1.91 albertel 944: #---------------------------------------------------- kerberos 5 initialization
945: &Authen::Krb5::init_context();
946: &Authen::Krb5::init_ets();
947:
1.57 www 948: &status('Accepted connection');
1.1 albertel 949: # =============================================================================
950: # do something with the connection
951: # -----------------------------------------------------------------------------
1.148 foxr 952: # see if we know client and check for spoof IP by challenge
953:
1.1 albertel 954: my $clientrec=($hostid{$clientip} ne undef);
1.9 www 955: &logthis(
1.115 albertel 956: "<font color=yellow>INFO: Connection, $clientip ($hostid{$clientip})</font>"
1.51 www 957: );
1.57 www 958: &status("Connecting $clientip ($hostid{$clientip})");
1.2 www 959: my $clientok;
1.1 albertel 960: if ($clientrec) {
1.57 www 961: &status("Waiting for init from $clientip ($hostid{$clientip})");
1.2 www 962: my $remotereq=<$client>;
1.115 albertel 963: $remotereq=~s/[^\w:]//g;
964: if ($remotereq =~ /^init/) {
1.121 albertel 965: &sethost("sethost:$perlvar{'lonHostID'}");
1.2 www 966: my $challenge="$$".time;
967: print $client "$challenge\n";
1.57 www 968: &status(
969: "Waiting for challenge reply from $clientip ($hostid{$clientip})");
1.2 www 970: $remotereq=<$client>;
971: $remotereq=~s/\W//g;
972: if ($challenge eq $remotereq) {
973: $clientok=1;
974: print $client "ok\n";
975: } else {
1.9 www 976: &logthis(
977: "<font color=blue>WARNING: $clientip did not reply challenge</font>");
1.57 www 978: &status('No challenge reply '.$clientip);
1.2 www 979: }
980: } else {
1.9 www 981: &logthis(
982: "<font color=blue>WARNING: "
983: ."$clientip failed to initialize: >$remotereq< </font>");
1.57 www 984: &status('No init '.$clientip);
1.2 www 985: }
986: } else {
1.9 www 987: &logthis(
988: "<font color=blue>WARNING: Unknown client $clientip</font>");
1.57 www 989: &status('Hung up on '.$clientip);
1.2 www 990: }
991: if ($clientok) {
1.1 albertel 992: # ---------------- New known client connecting, could mean machine online again
1.75 foxr 993:
1.115 albertel 994: foreach my $id (keys(%hostip)) {
995: if ($hostip{$id} ne $clientip ||
996: $hostip{$currenthostid} eq $clientip) {
997: # no need to try to do recon's to myself
998: next;
999: }
1000: &reconlonc("$perlvar{'lonSockDir'}/$id");
1001: }
1002: &logthis("<font color=green>Established connection: $hostid{$clientip}</font>");
1.58 www 1003: &status('Will listen to '.$hostid{$clientip});
1.1 albertel 1004: # ------------------------------------------------------------ Process requests
1005: while (my $userinput=<$client>) {
1006: chomp($userinput);
1.79 foxr 1007: Debug("Request = $userinput\n");
1.57 www 1008: &status('Processing '.$hostid{$clientip}.': '.$userinput);
1.1 albertel 1009: my $wasenc=0;
1.63 www 1010: alarm(120);
1.1 albertel 1011: # ------------------------------------------------------------ See if encrypted
1012: if ($userinput =~ /^enc/) {
1013: if ($cipher) {
1014: my ($cmd,$cmdlength,$encinput)=split(/:/,$userinput);
1015: $userinput='';
1016: for (my $encidx=0;$encidx<length($encinput);$encidx+=16) {
1017: $userinput.=
1018: $cipher->decrypt(
1019: pack("H16",substr($encinput,$encidx,16))
1020: );
1021: }
1022: $userinput=substr($userinput,0,$cmdlength);
1023: $wasenc=1;
1024: }
1.75 foxr 1025: }
1026:
1.1 albertel 1027: # ------------------------------------------------------------- Normal commands
1028: # ------------------------------------------------------------------------ ping
1029: if ($userinput =~ /^ping/) {
1.115 albertel 1030: print $client "$currenthostid\n";
1.1 albertel 1031: # ------------------------------------------------------------------------ pong
1.137 foxr 1032: }elsif ($userinput =~ /^pong/) {
1.134 albertel 1033: my $reply=&reply("ping",$hostid{$clientip});
1.115 albertel 1034: print $client "$currenthostid:$reply\n";
1.1 albertel 1035: # ------------------------------------------------------------------------ ekey
1036: } elsif ($userinput =~ /^ekey/) {
1037: my $buildkey=time.$$.int(rand 100000);
1038: $buildkey=~tr/1-6/A-F/;
1039: $buildkey=int(rand 100000).$buildkey.int(rand 100000);
1.115 albertel 1040: my $key=$currenthostid.$hostid{$clientip};
1.1 albertel 1041: $key=~tr/a-z/A-Z/;
1042: $key=~tr/G-P/0-9/;
1043: $key=~tr/Q-Z/0-9/;
1044: $key=$key.$buildkey.$key.$buildkey.$key.$buildkey;
1045: $key=substr($key,0,32);
1046: my $cipherkey=pack("H32",$key);
1047: $cipher=new IDEA $cipherkey;
1048: print $client "$buildkey\n";
1049: # ------------------------------------------------------------------------ load
1050: } elsif ($userinput =~ /^load/) {
1051: my $loadavg;
1052: {
1053: my $loadfile=IO::File->new('/proc/loadavg');
1054: $loadavg=<$loadfile>;
1055: }
1056: $loadavg =~ s/\s.*//g;
1.127 albertel 1057: my $loadpercent=100*$loadavg/$perlvar{'lonLoadLim'};
1.1 albertel 1058: print $client "$loadpercent\n";
1.127 albertel 1059: # -------------------------------------------------------------------- userload
1060: } elsif ($userinput =~ /^userload/) {
1061: my $userloadpercent=&userload();
1062: print $client "$userloadpercent\n";
1.137 foxr 1063:
1064: #
1065: # Transactions requiring encryption:
1066: #
1.54 harris41 1067: # ----------------------------------------------------------------- currentauth
1068: } elsif ($userinput =~ /^currentauth/) {
1069: if ($wasenc==1) {
1070: my ($cmd,$udom,$uname)=split(/:/,$userinput);
1.79 foxr 1071: my $result = GetAuthType($udom, $uname);
1.78 foxr 1072: if($result eq "nouser") {
1073: print $client "unknown_user\n";
1074: }
1075: else {
1076: print $client "$result\n"
1077: }
1.54 harris41 1078: } else {
1079: print $client "refused\n";
1080: }
1.137 foxr 1081: #--------------------------------------------------------------------- pushfile
1082: } elsif($userinput =~ /^pushfile/) {
1.140 foxr 1083: if($wasenc == 1) {
1084: my $cert = GetCertificate($userinput);
1085: if(ValidManager($cert)) {
1.141 foxr 1086: my $reply = PushFile($userinput);
1087: print $client "$reply\n";
1.140 foxr 1088: } else {
1089: print $client "refused\n";
1090: }
1091: } else {
1092: print $client "refused\n";
1093: }
1.137 foxr 1094: #--------------------------------------------------------------------- reinit
1095: } elsif($userinput =~ /^reinit/) {
1.140 foxr 1096: if ($wasenc == 1) {
1097: my $cert = GetCertificate($userinput);
1098: if(ValidManager($cert)) {
1.146 foxr 1099: chomp($userinput);
1.145 foxr 1100: my $reply = ReinitProcess($userinput);
1101: print $client "$reply\n";
1.140 foxr 1102: } else {
1103: print $client "refused\n";
1104: }
1105: } else {
1106: print $client "refused\n";
1107: }
1.1 albertel 1108: # ------------------------------------------------------------------------ auth
1109: } elsif ($userinput =~ /^auth/) {
1110: if ($wasenc==1) {
1111: my ($cmd,$udom,$uname,$upass)=split(/:/,$userinput);
1112: chomp($upass);
1.11 www 1113: $upass=unescape($upass);
1.1 albertel 1114: my $proname=propath($udom,$uname);
1115: my $passfilename="$proname/passwd";
1116: if (-e $passfilename) {
1117: my $pf = IO::File->new($passfilename);
1118: my $realpasswd=<$pf>;
1119: chomp($realpasswd);
1.2 www 1120: my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
1121: my $pwdcorrect=0;
1122: if ($howpwd eq 'internal') {
1.99 foxr 1123: &Debug("Internal auth");
1.2 www 1124: $pwdcorrect=
1125: (crypt($upass,$contentpwd) eq $contentpwd);
1126: } elsif ($howpwd eq 'unix') {
1.99 foxr 1127: &Debug("Unix auth");
1128: if((getpwnam($uname))[1] eq "") { #no such user!
1129: $pwdcorrect = 0;
1130: } else {
1131: $contentpwd=(getpwnam($uname))[1];
1132: my $pwauth_path="/usr/local/sbin/pwauth";
1133: unless ($contentpwd eq 'x') {
1134: $pwdcorrect=
1135: (crypt($upass,$contentpwd) eq
1136: $contentpwd);
1137: }
1138:
1.52 harris41 1139: elsif (-e $pwauth_path) {
1140: open PWAUTH, "|$pwauth_path" or
1141: die "Cannot invoke authentication";
1142: print PWAUTH "$uname\n$upass\n";
1143: close PWAUTH;
1144: $pwdcorrect=!$?;
1.99 foxr 1145: }
1.52 harris41 1146: }
1.3 www 1147: } elsif ($howpwd eq 'krb4') {
1.134 albertel 1148: my $null=pack("C",0);
1.104 matthew 1149: unless ($upass=~/$null/) {
1150: my $krb4_error = &Authen::Krb4::get_pw_in_tkt
1151: ($uname,"",$contentpwd,'krbtgt',
1152: $contentpwd,1,$upass);
1153: if (!$krb4_error) {
1154: $pwdcorrect = 1;
1155: } else {
1156: $pwdcorrect=0;
1157: # log error if it is not a bad password
1158: if ($krb4_error != 62) {
1159: &logthis('krb4:'.$uname.','.$contentpwd.','.
1160: &Authen::Krb4::get_err_txt($Authen::Krb4::error));
1161: }
1162: }
1163: }
1.91 albertel 1164: } elsif ($howpwd eq 'krb5') {
1.134 albertel 1165: my $null=pack("C",0);
1.91 albertel 1166: unless ($upass=~/$null/) {
1167: my $krbclient=&Authen::Krb5::parse_name($uname.'@'.$contentpwd);
1168: my $krbservice="krbtgt/".$contentpwd."\@".$contentpwd;
1169: my $krbserver=&Authen::Krb5::parse_name($krbservice);
1170: my $credentials=&Authen::Krb5::cc_default();
1171: $credentials->initialize($krbclient);
1172: my $krbreturn =
1173: &Authen::Krb5::get_in_tkt_with_password(
1174: $krbclient,$krbserver,$upass,$credentials);
1.92 albertel 1175: # unless ($krbreturn) {
1176: # &logthis("Krb5 Error: ".
1177: # &Authen::Krb5::error());
1178: # }
1.91 albertel 1179: $pwdcorrect = ($krbreturn == 1);
1180: } else { $pwdcorrect=0; }
1.50 albertel 1181: } elsif ($howpwd eq 'localauth') {
1.49 albertel 1182: $pwdcorrect=&localauth::localauth($uname,$upass,
1183: $contentpwd);
1184: }
1.2 www 1185: if ($pwdcorrect) {
1.1 albertel 1186: print $client "authorized\n";
1187: } else {
1188: print $client "non_authorized\n";
1189: }
1190: } else {
1191: print $client "unknown_user\n";
1192: }
1193: } else {
1194: print $client "refused\n";
1195: }
1196: # ---------------------------------------------------------------------- passwd
1197: } elsif ($userinput =~ /^passwd/) {
1198: if ($wasenc==1) {
1199: my
1200: ($cmd,$udom,$uname,$upass,$npass)=split(/:/,$userinput);
1201: chomp($npass);
1.32 www 1202: $upass=&unescape($upass);
1203: $npass=&unescape($npass);
1.98 foxr 1204: &Debug("Trying to change password for $uname");
1.72 matthew 1205: my $proname=propath($udom,$uname);
1.1 albertel 1206: my $passfilename="$proname/passwd";
1207: if (-e $passfilename) {
1208: my $realpasswd;
1209: { my $pf = IO::File->new($passfilename);
1210: $realpasswd=<$pf>; }
1211: chomp($realpasswd);
1.2 www 1212: my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
1213: if ($howpwd eq 'internal') {
1.98 foxr 1214: &Debug("internal auth");
1.2 www 1215: if (crypt($upass,$contentpwd) eq $contentpwd) {
1216: my $salt=time;
1217: $salt=substr($salt,6,2);
1218: my $ncpass=crypt($npass,$salt);
1.139 albertel 1219: {
1220: my $pf;
1221: if ($pf = IO::File->new(">$passfilename")) {
1222: print $pf "internal:$ncpass\n";
1223: &logthis("Result of password change for $uname: pwchange_success");
1224: print $client "ok\n";
1225: } else {
1226: &logthis("Unable to open $uname passwd to change password");
1227: print $client "non_authorized\n";
1228: }
1229: }
1230:
1.2 www 1231: } else {
1232: print $client "non_authorized\n";
1233: }
1.72 matthew 1234: } elsif ($howpwd eq 'unix') {
1235: # Unix means we have to access /etc/password
1236: # one way or another.
1237: # First: Make sure the current password is
1238: # correct
1.98 foxr 1239: &Debug("auth is unix");
1.72 matthew 1240: $contentpwd=(getpwnam($uname))[1];
1241: my $pwdcorrect = "0";
1242: my $pwauth_path="/usr/local/sbin/pwauth";
1243: unless ($contentpwd eq 'x') {
1244: $pwdcorrect=
1245: (crypt($upass,$contentpwd) eq $contentpwd);
1246: } elsif (-e $pwauth_path) {
1247: open PWAUTH, "|$pwauth_path" or
1248: die "Cannot invoke authentication";
1249: print PWAUTH "$uname\n$upass\n";
1250: close PWAUTH;
1.98 foxr 1251: &Debug("exited pwauth with $? ($uname,$upass) ");
1252: $pwdcorrect=($? == 0);
1.72 matthew 1253: }
1254: if ($pwdcorrect) {
1255: my $execdir=$perlvar{'lonDaemons'};
1.98 foxr 1256: &Debug("Opening lcpasswd pipeline");
1.132 matthew 1257: my $pf = IO::File->new("|$execdir/lcpasswd > $perlvar{'lonDaemons'}/logs/lcpasswd.log");
1.72 matthew 1258: print $pf "$uname\n$npass\n$npass\n";
1259: close $pf;
1.97 foxr 1260: my $err = $?;
1261: my $result = ($err>0 ? 'pwchange_failure'
1.72 matthew 1262: : 'ok');
1.96 foxr 1263: &logthis("Result of password change for $uname: ".
1264: &lcpasswdstrerror($?));
1.72 matthew 1265: print $client "$result\n";
1266: } else {
1267: print $client "non_authorized\n";
1268: }
1269: } else {
1.2 www 1270: print $client "auth_mode_error\n";
1.1 albertel 1271: }
1272: } else {
1273: print $client "unknown_user\n";
1.31 www 1274: }
1275: } else {
1276: print $client "refused\n";
1277: }
1278: # -------------------------------------------------------------------- makeuser
1279: } elsif ($userinput =~ /^makeuser/) {
1.91 albertel 1280: &Debug("Make user received");
1.56 harris41 1281: my $oldumask=umask(0077);
1.31 www 1282: if ($wasenc==1) {
1283: my
1284: ($cmd,$udom,$uname,$umode,$npass)=split(/:/,$userinput);
1.77 foxr 1285: &Debug("cmd =".$cmd." $udom =".$udom.
1286: " uname=".$uname);
1.31 www 1287: chomp($npass);
1.32 www 1288: $npass=&unescape($npass);
1.31 www 1289: my $proname=propath($udom,$uname);
1290: my $passfilename="$proname/passwd";
1.77 foxr 1291: &Debug("Password file created will be:".
1292: $passfilename);
1.31 www 1293: if (-e $passfilename) {
1294: print $client "already_exists\n";
1.115 albertel 1295: } elsif ($udom ne $currentdomainid) {
1.31 www 1296: print $client "not_right_domain\n";
1297: } else {
1.134 albertel 1298: my @fpparts=split(/\//,$proname);
1299: my $fpnow=$fpparts[0].'/'.$fpparts[1].'/'.$fpparts[2];
1300: my $fperror='';
1301: for (my $i=3;$i<=$#fpparts;$i++) {
1.31 www 1302: $fpnow.='/'.$fpparts[$i];
1303: unless (-e $fpnow) {
1304: unless (mkdir($fpnow,0777)) {
1.109 foxr 1305: $fperror="error: ".($!+0)
1.111 matthew 1306: ." mkdir failed while attempting "
1307: ."makeuser\n";
1.31 www 1308: }
1309: }
1310: }
1311: unless ($fperror) {
1.98 foxr 1312: my $result=&make_passwd_file($uname, $umode,$npass,
1.91 albertel 1313: $passfilename);
1314: print $client $result;
1.31 www 1315: } else {
1316: print $client "$fperror\n";
1317: }
1.55 harris41 1318: }
1319: } else {
1320: print $client "refused\n";
1321: }
1.56 harris41 1322: umask($oldumask);
1.55 harris41 1323: # -------------------------------------------------------------- changeuserauth
1324: } elsif ($userinput =~ /^changeuserauth/) {
1.77 foxr 1325: &Debug("Changing authorization");
1326: if ($wasenc==1) {
1.55 harris41 1327: my
1.91 albertel 1328: ($cmd,$udom,$uname,$umode,$npass)=split(/:/,$userinput);
1.55 harris41 1329: chomp($npass);
1.77 foxr 1330: &Debug("cmd = ".$cmd." domain= ".$udom.
1331: "uname =".$uname." umode= ".$umode);
1.55 harris41 1332: $npass=&unescape($npass);
1.91 albertel 1333: my $proname=&propath($udom,$uname);
1.55 harris41 1334: my $passfilename="$proname/passwd";
1.115 albertel 1335: if ($udom ne $currentdomainid) {
1.55 harris41 1336: print $client "not_right_domain\n";
1337: } else {
1.98 foxr 1338: my $result=&make_passwd_file($uname, $umode,$npass,
1.93 albertel 1339: $passfilename);
1.91 albertel 1340: print $client $result;
1.1 albertel 1341: }
1342: } else {
1343: print $client "refused\n";
1344: }
1345: # ------------------------------------------------------------------------ home
1346: } elsif ($userinput =~ /^home/) {
1347: my ($cmd,$udom,$uname)=split(/:/,$userinput);
1348: chomp($uname);
1349: my $proname=propath($udom,$uname);
1350: if (-e $proname) {
1351: print $client "found\n";
1352: } else {
1353: print $client "not_found\n";
1354: }
1355: # ---------------------------------------------------------------------- update
1356: } elsif ($userinput =~ /^update/) {
1357: my ($cmd,$fname)=split(/:/,$userinput);
1358: my $ownership=ishome($fname);
1359: if ($ownership eq 'not_owner') {
1360: if (-e $fname) {
1361: my ($dev,$ino,$mode,$nlink,
1362: $uid,$gid,$rdev,$size,
1363: $atime,$mtime,$ctime,
1364: $blksize,$blocks)=stat($fname);
1.134 albertel 1365: my $now=time;
1366: my $since=$now-$atime;
1.1 albertel 1367: if ($since>$perlvar{'lonExpire'}) {
1.134 albertel 1368: my $reply=
1369: &reply("unsub:$fname","$hostid{$clientip}");
1.1 albertel 1370: unlink("$fname");
1371: } else {
1372: my $transname="$fname.in.transfer";
1373: my $remoteurl=
1374: reply("sub:$fname","$hostid{$clientip}");
1375: my $response;
1376: {
1377: my $ua=new LWP::UserAgent;
1378: my $request=new HTTP::Request('GET',"$remoteurl");
1379: $response=$ua->request($request,$transname);
1380: }
1381: if ($response->is_error()) {
1.24 albertel 1382: unlink($transname);
1.1 albertel 1383: my $message=$response->status_line;
1384: &logthis(
1385: "LWP GET: $message for $fname ($remoteurl)");
1386: } else {
1.14 www 1387: if ($remoteurl!~/\.meta$/) {
1.28 www 1388: my $ua=new LWP::UserAgent;
1.14 www 1389: my $mrequest=
1390: new HTTP::Request('GET',$remoteurl.'.meta');
1391: my $mresponse=
1392: $ua->request($mrequest,$fname.'.meta');
1393: if ($mresponse->is_error()) {
1394: unlink($fname.'.meta');
1395: }
1396: }
1.1 albertel 1397: rename($transname,$fname);
1398: }
1399: }
1400: print $client "ok\n";
1401: } else {
1402: print $client "not_found\n";
1403: }
1404: } else {
1405: print $client "rejected\n";
1406: }
1.85 www 1407: # -------------------------------------- fetch a user file from a remote server
1408: } elsif ($userinput =~ /^fetchuserfile/) {
1.86 www 1409: my ($cmd,$fname)=split(/:/,$userinput);
1410: my ($udom,$uname,$ufile)=split(/\//,$fname);
1411: my $udir=propath($udom,$uname).'/userfiles';
1.88 albertel 1412: unless (-e $udir) { mkdir($udir,0770); }
1.86 www 1413: if (-e $udir) {
1414: $ufile=~s/^[\.\~]+//;
1415: $ufile=~s/\///g;
1416: my $transname=$udir.'/'.$ufile;
1417: my $remoteurl='http://'.$clientip.'/userfiles/'.$fname;
1418: my $response;
1419: {
1420: my $ua=new LWP::UserAgent;
1421: my $request=new HTTP::Request('GET',"$remoteurl");
1422: $response=$ua->request($request,$transname);
1423: }
1424: if ($response->is_error()) {
1425: unlink($transname);
1426: my $message=$response->status_line;
1427: &logthis(
1428: "LWP GET: $message for $fname ($remoteurl)");
1429: print $client "failed\n";
1430: } else {
1431: print $client "ok\n";
1432: }
1433: } else {
1434: print $client "not_home\n";
1435: }
1.85 www 1436: # ------------------------------------------ authenticate access to a user file
1.86 www 1437: } elsif ($userinput =~ /^tokenauthuserfile/) {
1.85 www 1438: my ($cmd,$fname,$session)=split(/:/,$userinput);
1.86 www 1439: chomp($session);
1.134 albertel 1440: my $reply='non_auth';
1.86 www 1441: if (open(ENVIN,$perlvar{'lonIDsDir'}.'/'.
1.134 albertel 1442: $session.'.id')) {
1443: while (my $line=<ENVIN>) {
1444: if ($line=~/userfile\.$fname\=/) { $reply='ok'; }
1445: }
1446: close(ENVIN);
1447: print $client $reply."\n";
1.86 www 1448: } else {
1.134 albertel 1449: print $client "invalid_token\n";
1.86 www 1450: }
1.1 albertel 1451: # ----------------------------------------------------------------- unsubscribe
1452: } elsif ($userinput =~ /^unsub/) {
1453: my ($cmd,$fname)=split(/:/,$userinput);
1454: if (-e $fname) {
1.84 albertel 1455: print $client &unsub($client,$fname,$clientip);
1.1 albertel 1456: } else {
1457: print $client "not_found\n";
1458: }
1459: # ------------------------------------------------------------------- subscribe
1460: } elsif ($userinput =~ /^sub/) {
1.84 albertel 1461: print $client &subscribe($userinput,$clientip);
1.102 www 1462: # ------------------------------------------------------------- current version
1463: } elsif ($userinput =~ /^currentversion/) {
1464: my ($cmd,$fname)=split(/:/,$userinput);
1465: print $client ¤tversion($fname)."\n";
1.12 harris41 1466: # ------------------------------------------------------------------------- log
1467: } elsif ($userinput =~ /^log/) {
1468: my ($cmd,$udom,$uname,$what)=split(/:/,$userinput);
1469: chomp($what);
1470: my $proname=propath($udom,$uname);
1471: my $now=time;
1472: {
1473: my $hfh;
1474: if ($hfh=IO::File->new(">>$proname/activity.log")) {
1475: print $hfh "$now:$hostid{$clientip}:$what\n";
1476: print $client "ok\n";
1477: } else {
1.109 foxr 1478: print $client "error: ".($!+0)
1.111 matthew 1479: ." IO::File->new Failed "
1480: ."while attempting log\n";
1.12 harris41 1481: }
1482: }
1.1 albertel 1483: # ------------------------------------------------------------------------- put
1484: } elsif ($userinput =~ /^put/) {
1.6 www 1485: my ($cmd,$udom,$uname,$namespace,$what)
1.1 albertel 1486: =split(/:/,$userinput);
1.8 www 1487: $namespace=~s/\//\_/g;
1.6 www 1488: $namespace=~s/\W//g;
1489: if ($namespace ne 'roles') {
1.1 albertel 1490: chomp($what);
1491: my $proname=propath($udom,$uname);
1492: my $now=time;
1.48 www 1493: unless ($namespace=~/^nohist\_/) {
1.1 albertel 1494: my $hfh;
1495: if (
1496: $hfh=IO::File->new(">>$proname/$namespace.hist")
1497: ) { print $hfh "P:$now:$what\n"; }
1498: }
1499: my @pairs=split(/\&/,$what);
1.134 albertel 1500: my %hash;
1501: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT(),0640)) {
1502: foreach my $pair (@pairs) {
1503: my ($key,$value)=split(/=/,$pair);
1.1 albertel 1504: $hash{$key}=$value;
1505: }
1.4 www 1506: if (untie(%hash)) {
1.1 albertel 1507: print $client "ok\n";
1508: } else {
1.109 foxr 1509: print $client "error: ".($!+0)
1.111 matthew 1510: ." untie(GDBM) failed ".
1511: "while attempting put\n";
1.1 albertel 1512: }
1513: } else {
1.109 foxr 1514: print $client "error: ".($!)
1.111 matthew 1515: ." tie(GDBM) Failed ".
1516: "while attempting put\n";
1.1 albertel 1517: }
1.6 www 1518: } else {
1519: print $client "refused\n";
1520: }
1521: # -------------------------------------------------------------------- rolesput
1522: } elsif ($userinput =~ /^rolesput/) {
1.77 foxr 1523: &Debug("rolesput");
1.6 www 1524: if ($wasenc==1) {
1525: my ($cmd,$exedom,$exeuser,$udom,$uname,$what)
1526: =split(/:/,$userinput);
1.77 foxr 1527: &Debug("cmd = ".$cmd." exedom= ".$exedom.
1528: "user = ".$exeuser." udom=".$udom.
1529: "what = ".$what);
1.6 www 1530: my $namespace='roles';
1531: chomp($what);
1532: my $proname=propath($udom,$uname);
1533: my $now=time;
1534: {
1535: my $hfh;
1536: if (
1537: $hfh=IO::File->new(">>$proname/$namespace.hist")
1538: ) {
1539: print $hfh "P:$now:$exedom:$exeuser:$what\n";
1540: }
1541: }
1542: my @pairs=split(/\&/,$what);
1.134 albertel 1543: my %hash;
1544: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT(),0640)) {
1545: foreach my $pair (@pairs) {
1546: my ($key,$value)=split(/=/,$pair);
1.78 foxr 1547: &ManagePermissions($key, $udom, $uname,
1548: &GetAuthType( $udom,
1549: $uname));
1.6 www 1550: $hash{$key}=$value;
1551: }
1552: if (untie(%hash)) {
1553: print $client "ok\n";
1554: } else {
1.109 foxr 1555: print $client "error: ".($!+0)
1.111 matthew 1556: ." untie(GDBM) Failed ".
1557: "while attempting rolesput\n";
1.6 www 1558: }
1559: } else {
1.109 foxr 1560: print $client "error: ".($!+0)
1.111 matthew 1561: ." tie(GDBM) Failed ".
1562: "while attempting rolesput\n";
1.117 www 1563: }
1564: } else {
1565: print $client "refused\n";
1566: }
1567: # -------------------------------------------------------------------- rolesdel
1568: } elsif ($userinput =~ /^rolesdel/) {
1569: &Debug("rolesdel");
1570: if ($wasenc==1) {
1571: my ($cmd,$exedom,$exeuser,$udom,$uname,$what)
1572: =split(/:/,$userinput);
1573: &Debug("cmd = ".$cmd." exedom= ".$exedom.
1574: "user = ".$exeuser." udom=".$udom.
1575: "what = ".$what);
1576: my $namespace='roles';
1577: chomp($what);
1578: my $proname=propath($udom,$uname);
1579: my $now=time;
1580: {
1581: my $hfh;
1582: if (
1583: $hfh=IO::File->new(">>$proname/$namespace.hist")
1584: ) {
1585: print $hfh "D:$now:$exedom:$exeuser:$what\n";
1586: }
1587: }
1588: my @rolekeys=split(/\&/,$what);
1.134 albertel 1589: my %hash;
1590: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT(),0640)) {
1591: foreach my $key (@rolekeys) {
1.117 www 1592: delete $hash{$key};
1593: }
1594: if (untie(%hash)) {
1595: print $client "ok\n";
1596: } else {
1597: print $client "error: ".($!+0)
1598: ." untie(GDBM) Failed ".
1599: "while attempting rolesdel\n";
1600: }
1601: } else {
1602: print $client "error: ".($!+0)
1603: ." tie(GDBM) Failed ".
1604: "while attempting rolesdel\n";
1.6 www 1605: }
1606: } else {
1607: print $client "refused\n";
1608: }
1.1 albertel 1609: # ------------------------------------------------------------------------- get
1610: } elsif ($userinput =~ /^get/) {
1611: my ($cmd,$udom,$uname,$namespace,$what)
1612: =split(/:/,$userinput);
1.8 www 1613: $namespace=~s/\//\_/g;
1.1 albertel 1614: $namespace=~s/\W//g;
1615: chomp($what);
1616: my @queries=split(/\&/,$what);
1617: my $proname=propath($udom,$uname);
1618: my $qresult='';
1.134 albertel 1619: my %hash;
1620: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER(),0640)) {
1621: for (my $i=0;$i<=$#queries;$i++) {
1.1 albertel 1622: $qresult.="$hash{$queries[$i]}&";
1623: }
1.4 www 1624: if (untie(%hash)) {
1.1 albertel 1625: $qresult=~s/\&$//;
1626: print $client "$qresult\n";
1627: } else {
1.109 foxr 1628: print $client "error: ".($!+0)
1.111 matthew 1629: ." untie(GDBM) Failed ".
1630: "while attempting get\n";
1.1 albertel 1631: }
1632: } else {
1.112 matthew 1633: if ($!+0 == 2) {
1634: print $client "error:No such file or ".
1635: "GDBM reported bad block error\n";
1636: } else {
1637: print $client "error: ".($!+0)
1638: ." tie(GDBM) Failed ".
1639: "while attempting get\n";
1640: }
1.1 albertel 1641: }
1642: # ------------------------------------------------------------------------ eget
1643: } elsif ($userinput =~ /^eget/) {
1644: my ($cmd,$udom,$uname,$namespace,$what)
1645: =split(/:/,$userinput);
1.8 www 1646: $namespace=~s/\//\_/g;
1.1 albertel 1647: $namespace=~s/\W//g;
1648: chomp($what);
1649: my @queries=split(/\&/,$what);
1650: my $proname=propath($udom,$uname);
1651: my $qresult='';
1.134 albertel 1652: my %hash;
1653: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER(),0640)) {
1654: for (my $i=0;$i<=$#queries;$i++) {
1.1 albertel 1655: $qresult.="$hash{$queries[$i]}&";
1656: }
1.4 www 1657: if (untie(%hash)) {
1.1 albertel 1658: $qresult=~s/\&$//;
1659: if ($cipher) {
1660: my $cmdlength=length($qresult);
1661: $qresult.=" ";
1662: my $encqresult='';
1663: for
1664: (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
1665: $encqresult.=
1666: unpack("H16",
1667: $cipher->encrypt(substr($qresult,$encidx,8)));
1668: }
1669: print $client "enc:$cmdlength:$encqresult\n";
1670: } else {
1671: print $client "error:no_key\n";
1672: }
1673: } else {
1.109 foxr 1674: print $client "error: ".($!+0)
1.111 matthew 1675: ." untie(GDBM) Failed ".
1676: "while attempting eget\n";
1.1 albertel 1677: }
1678: } else {
1.109 foxr 1679: print $client "error: ".($!+0)
1.111 matthew 1680: ." tie(GDBM) Failed ".
1681: "while attempting eget\n";
1.1 albertel 1682: }
1683: # ------------------------------------------------------------------------- del
1684: } elsif ($userinput =~ /^del/) {
1685: my ($cmd,$udom,$uname,$namespace,$what)
1686: =split(/:/,$userinput);
1.8 www 1687: $namespace=~s/\//\_/g;
1.1 albertel 1688: $namespace=~s/\W//g;
1689: chomp($what);
1690: my $proname=propath($udom,$uname);
1691: my $now=time;
1.48 www 1692: unless ($namespace=~/^nohist\_/) {
1.1 albertel 1693: my $hfh;
1694: if (
1695: $hfh=IO::File->new(">>$proname/$namespace.hist")
1696: ) { print $hfh "D:$now:$what\n"; }
1697: }
1698: my @keys=split(/\&/,$what);
1.134 albertel 1699: my %hash;
1700: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT(),0640)) {
1701: foreach my $key (@keys) {
1.1 albertel 1702: delete($hash{$key});
1703: }
1.4 www 1704: if (untie(%hash)) {
1.1 albertel 1705: print $client "ok\n";
1706: } else {
1.109 foxr 1707: print $client "error: ".($!+0)
1.111 matthew 1708: ." untie(GDBM) Failed ".
1709: "while attempting del\n";
1.1 albertel 1710: }
1711: } else {
1.109 foxr 1712: print $client "error: ".($!+0)
1.111 matthew 1713: ." tie(GDBM) Failed ".
1714: "while attempting del\n";
1.1 albertel 1715: }
1716: # ------------------------------------------------------------------------ keys
1717: } elsif ($userinput =~ /^keys/) {
1718: my ($cmd,$udom,$uname,$namespace)
1719: =split(/:/,$userinput);
1.8 www 1720: $namespace=~s/\//\_/g;
1.1 albertel 1721: $namespace=~s/\W//g;
1722: my $proname=propath($udom,$uname);
1723: my $qresult='';
1.134 albertel 1724: my %hash;
1725: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER(),0640)) {
1726: foreach my $key (keys %hash) {
1.1 albertel 1727: $qresult.="$key&";
1728: }
1.4 www 1729: if (untie(%hash)) {
1.1 albertel 1730: $qresult=~s/\&$//;
1731: print $client "$qresult\n";
1732: } else {
1.109 foxr 1733: print $client "error: ".($!+0)
1.111 matthew 1734: ." untie(GDBM) Failed ".
1735: "while attempting keys\n";
1.105 matthew 1736: }
1737: } else {
1.109 foxr 1738: print $client "error: ".($!+0)
1.111 matthew 1739: ." tie(GDBM) Failed ".
1740: "while attempting keys\n";
1.105 matthew 1741: }
1742: # ----------------------------------------------------------------- dumpcurrent
1.107 matthew 1743: } elsif ($userinput =~ /^currentdump/) {
1.105 matthew 1744: my ($cmd,$udom,$uname,$namespace)
1745: =split(/:/,$userinput);
1746: $namespace=~s/\//\_/g;
1747: $namespace=~s/\W//g;
1748: my $qresult='';
1749: my $proname=propath($udom,$uname);
1.134 albertel 1750: my %hash;
1.105 matthew 1751: if (tie(%hash,'GDBM_File',
1752: "$proname/$namespace.db",
1753: &GDBM_READER(),0640)) {
1754: # Structure of %data:
1755: # $data{$symb}->{$parameter}=$value;
1756: # $data{$symb}->{'v.'.$parameter}=$version;
1757: # since $parameter will be unescaped, we do not
1758: # have to worry about silly parameter names...
1759: my %data = ();
1760: while (my ($key,$value) = each(%hash)) {
1761: my ($v,$symb,$param) = split(/:/,$key);
1762: next if ($v eq 'version' || $symb eq 'keys');
1763: next if (exists($data{$symb}) &&
1764: exists($data{$symb}->{$param}) &&
1765: $data{$symb}->{'v.'.$param} > $v);
1766: $data{$symb}->{$param}=$value;
1.107 matthew 1767: $data{$symb}->{'v.'.$param}=$v;
1.105 matthew 1768: }
1769: if (untie(%hash)) {
1770: while (my ($symb,$param_hash) = each(%data)) {
1771: while(my ($param,$value) = each (%$param_hash)){
1772: next if ($param =~ /^v\./);
1773: $qresult.=$symb.':'.$param.'='.$value.'&';
1774: }
1775: }
1776: chop($qresult);
1777: print $client "$qresult\n";
1778: } else {
1.109 foxr 1779: print $client "error: ".($!+0)
1.111 matthew 1780: ." untie(GDBM) Failed ".
1781: "while attempting currentdump\n";
1.1 albertel 1782: }
1783: } else {
1.109 foxr 1784: print $client "error: ".($!+0)
1.111 matthew 1785: ." tie(GDBM) Failed ".
1786: "while attempting currentdump\n";
1.1 albertel 1787: }
1788: # ------------------------------------------------------------------------ dump
1789: } elsif ($userinput =~ /^dump/) {
1.62 www 1790: my ($cmd,$udom,$uname,$namespace,$regexp)
1.1 albertel 1791: =split(/:/,$userinput);
1.8 www 1792: $namespace=~s/\//\_/g;
1.1 albertel 1793: $namespace=~s/\W//g;
1.62 www 1794: if (defined($regexp)) {
1795: $regexp=&unescape($regexp);
1796: } else {
1797: $regexp='.';
1798: }
1.100 matthew 1799: my $qresult='';
1.1 albertel 1800: my $proname=propath($udom,$uname);
1.134 albertel 1801: my %hash;
1802: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER(),0640)) {
1.90 stredwic 1803: study($regexp);
1.134 albertel 1804: while (my ($key,$value) = each(%hash)) {
1.100 matthew 1805: if ($regexp eq '.') {
1806: $qresult.=$key.'='.$value.'&';
1807: } else {
1808: my $unescapeKey = &unescape($key);
1809: if (eval('$unescapeKey=~/$regexp/')) {
1810: $qresult.="$key=$value&";
1811: }
1812: }
1.7 www 1813: }
1.100 matthew 1814: if (untie(%hash)) {
1815: chop($qresult);
1816: print $client "$qresult\n";
1.7 www 1817: } else {
1.109 foxr 1818: print $client "error: ".($!+0)
1.111 matthew 1819: ." untie(GDBM) Failed ".
1820: "while attempting dump\n";
1.7 www 1821: }
1822: } else {
1.109 foxr 1823: print $client "error: ".($!+0)
1.111 matthew 1824: ." tie(GDBM) Failed ".
1825: "while attempting dump\n";
1.7 www 1826: }
1827: # ----------------------------------------------------------------------- store
1828: } elsif ($userinput =~ /^store/) {
1829: my ($cmd,$udom,$uname,$namespace,$rid,$what)
1830: =split(/:/,$userinput);
1.8 www 1831: $namespace=~s/\//\_/g;
1.7 www 1832: $namespace=~s/\W//g;
1833: if ($namespace ne 'roles') {
1834: chomp($what);
1835: my $proname=propath($udom,$uname);
1836: my $now=time;
1.48 www 1837: unless ($namespace=~/^nohist\_/) {
1.7 www 1838: my $hfh;
1839: if (
1840: $hfh=IO::File->new(">>$proname/$namespace.hist")
1841: ) { print $hfh "P:$now:$rid:$what\n"; }
1842: }
1843: my @pairs=split(/\&/,$what);
1.134 albertel 1844: my %hash;
1845: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT(),0640)) {
1.7 www 1846: my @previouskeys=split(/&/,$hash{"keys:$rid"});
1847: my $key;
1848: $hash{"version:$rid"}++;
1849: my $version=$hash{"version:$rid"};
1850: my $allkeys='';
1.134 albertel 1851: foreach my $pair (@pairs) {
1852: my ($key,$value)=split(/=/,$pair);
1.7 www 1853: $allkeys.=$key.':';
1854: $hash{"$version:$rid:$key"}=$value;
1855: }
1.36 www 1856: $hash{"$version:$rid:timestamp"}=$now;
1857: $allkeys.='timestamp';
1.7 www 1858: $hash{"$version:keys:$rid"}=$allkeys;
1859: if (untie(%hash)) {
1860: print $client "ok\n";
1861: } else {
1.109 foxr 1862: print $client "error: ".($!+0)
1.111 matthew 1863: ." untie(GDBM) Failed ".
1864: "while attempting store\n";
1.7 www 1865: }
1866: } else {
1.109 foxr 1867: print $client "error: ".($!+0)
1.111 matthew 1868: ." tie(GDBM) Failed ".
1869: "while attempting store\n";
1.7 www 1870: }
1871: } else {
1872: print $client "refused\n";
1873: }
1874: # --------------------------------------------------------------------- restore
1875: } elsif ($userinput =~ /^restore/) {
1876: my ($cmd,$udom,$uname,$namespace,$rid)
1877: =split(/:/,$userinput);
1.8 www 1878: $namespace=~s/\//\_/g;
1.7 www 1879: $namespace=~s/\W//g;
1880: chomp($rid);
1881: my $proname=propath($udom,$uname);
1882: my $qresult='';
1.134 albertel 1883: my %hash;
1884: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER(),0640)) {
1.7 www 1885: my $version=$hash{"version:$rid"};
1886: $qresult.="version=$version&";
1887: my $scope;
1888: for ($scope=1;$scope<=$version;$scope++) {
1889: my $vkeys=$hash{"$scope:keys:$rid"};
1890: my @keys=split(/:/,$vkeys);
1891: my $key;
1892: $qresult.="$scope:keys=$vkeys&";
1893: foreach $key (@keys) {
1.21 www 1894: $qresult.="$scope:$key=".$hash{"$scope:$rid:$key"}."&";
1.7 www 1895: }
1.1 albertel 1896: }
1.4 www 1897: if (untie(%hash)) {
1.1 albertel 1898: $qresult=~s/\&$//;
1899: print $client "$qresult\n";
1900: } else {
1.109 foxr 1901: print $client "error: ".($!+0)
1.111 matthew 1902: ." untie(GDBM) Failed ".
1903: "while attempting restore\n";
1.1 albertel 1904: }
1905: } else {
1.109 foxr 1906: print $client "error: ".($!+0)
1.111 matthew 1907: ." tie(GDBM) Failed ".
1908: "while attempting restore\n";
1.1 albertel 1909: }
1.86 www 1910: # -------------------------------------------------------------------- chatsend
1911: } elsif ($userinput =~ /^chatsend/) {
1912: my ($cmd,$cdom,$cnum,$newpost)=split(/\:/,$userinput);
1913: &chatadd($cdom,$cnum,$newpost);
1914: print $client "ok\n";
1915: # -------------------------------------------------------------------- chatretr
1916: } elsif ($userinput =~ /^chatretr/) {
1.122 www 1917: my
1918: ($cmd,$cdom,$cnum,$udom,$uname)=split(/\:/,$userinput);
1.86 www 1919: my $reply='';
1.122 www 1920: foreach (&getchat($cdom,$cnum,$udom,$uname)) {
1.86 www 1921: $reply.=&escape($_).':';
1922: }
1923: $reply=~s/\:$//;
1924: print $client $reply."\n";
1.12 harris41 1925: # ------------------------------------------------------------------- querysend
1926: } elsif ($userinput =~ /^querysend/) {
1.44 harris41 1927: my ($cmd,$query,
1.82 www 1928: $arg1,$arg2,$arg3)=split(/\:/,$userinput);
1.12 harris41 1929: $query=~s/\n*$//g;
1.82 www 1930: print $client "".
1.40 harris41 1931: sqlreply("$hostid{$clientip}\&$query".
1.82 www 1932: "\&$arg1"."\&$arg2"."\&$arg3")."\n";
1.12 harris41 1933: # ------------------------------------------------------------------ queryreply
1934: } elsif ($userinput =~ /^queryreply/) {
1935: my ($cmd,$id,$reply)=split(/:/,$userinput);
1936: my $store;
1.13 www 1937: my $execdir=$perlvar{'lonDaemons'};
1938: if ($store=IO::File->new(">$execdir/tmp/$id")) {
1.43 harris41 1939: $reply=~s/\&/\n/g;
1.12 harris41 1940: print $store $reply;
1941: close $store;
1.46 harris41 1942: my $store2=IO::File->new(">$execdir/tmp/$id.end");
1943: print $store2 "done\n";
1944: close $store2;
1.12 harris41 1945: print $client "ok\n";
1946: }
1947: else {
1.109 foxr 1948: print $client "error: ".($!+0)
1.111 matthew 1949: ." IO::File->new Failed ".
1950: "while attempting queryreply\n";
1.12 harris41 1951: }
1.118 www 1952: # ----------------------------------------------------------------- courseidput
1953: } elsif ($userinput =~ /^courseidput/) {
1954: my ($cmd,$udom,$what)=split(/:/,$userinput);
1955: chomp($what);
1956: $udom=~s/\W//g;
1957: my $proname=
1958: "$perlvar{'lonUsersDir'}/$udom/nohist_courseids";
1959: my $now=time;
1960: my @pairs=split(/\&/,$what);
1.134 albertel 1961: my %hash;
1962: if (tie(%hash,'GDBM_File',"$proname.db",&GDBM_WRCREAT(),0640)) {
1963: foreach my $pair (@pairs) {
1964: my ($key,$value)=split(/=/,$pair);
1.118 www 1965: $hash{$key}=$value.':'.$now;
1966: }
1967: if (untie(%hash)) {
1968: print $client "ok\n";
1969: } else {
1970: print $client "error: ".($!+0)
1971: ." untie(GDBM) Failed ".
1972: "while attempting courseidput\n";
1973: }
1974: } else {
1975: print $client "error: ".($!+0)
1976: ." tie(GDBM) Failed ".
1977: "while attempting courseidput\n";
1978: }
1979: # ---------------------------------------------------------------- courseiddump
1980: } elsif ($userinput =~ /^courseiddump/) {
1981: my ($cmd,$udom,$since,$description)
1982: =split(/:/,$userinput);
1983: if (defined($description)) {
1984: $description=&unescape($description);
1985: } else {
1986: $description='.';
1987: }
1988: unless (defined($since)) { $since=0; }
1989: my $qresult='';
1990: my $proname=
1991: "$perlvar{'lonUsersDir'}/$udom/nohist_courseids";
1.134 albertel 1992: my %hash;
1993: if (tie(%hash,'GDBM_File',"$proname.db",&GDBM_READER(),0640)) {
1994: while (my ($key,$value) = each(%hash)) {
1.118 www 1995: my ($descr,$lasttime)=split(/\:/,$value);
1996: if ($lasttime<$since) { next; }
1.133 www 1997: if ($description eq '.') {
1.118 www 1998: $qresult.=$key.'='.$descr.'&';
1999: } else {
2000: my $unescapeVal = &unescape($descr);
1.120 www 2001: if (eval('$unescapeVal=~/$description/i')) {
1.118 www 2002: $qresult.="$key=$descr&";
2003: }
2004: }
2005: }
2006: if (untie(%hash)) {
2007: chop($qresult);
2008: print $client "$qresult\n";
2009: } else {
2010: print $client "error: ".($!+0)
2011: ." untie(GDBM) Failed ".
2012: "while attempting courseiddump\n";
2013: }
2014: } else {
2015: print $client "error: ".($!+0)
2016: ." tie(GDBM) Failed ".
2017: "while attempting courseiddump\n";
2018: }
1.1 albertel 2019: # ----------------------------------------------------------------------- idput
2020: } elsif ($userinput =~ /^idput/) {
2021: my ($cmd,$udom,$what)=split(/:/,$userinput);
2022: chomp($what);
2023: $udom=~s/\W//g;
2024: my $proname="$perlvar{'lonUsersDir'}/$udom/ids";
2025: my $now=time;
2026: {
2027: my $hfh;
2028: if (
2029: $hfh=IO::File->new(">>$proname.hist")
2030: ) { print $hfh "P:$now:$what\n"; }
2031: }
2032: my @pairs=split(/\&/,$what);
1.134 albertel 2033: my %hash;
2034: if (tie(%hash,'GDBM_File',"$proname.db",&GDBM_WRCREAT(),0640)) {
2035: foreach my $pair (@pairs) {
2036: my ($key,$value)=split(/=/,$pair);
1.1 albertel 2037: $hash{$key}=$value;
2038: }
1.4 www 2039: if (untie(%hash)) {
1.1 albertel 2040: print $client "ok\n";
2041: } else {
1.109 foxr 2042: print $client "error: ".($!+0)
1.111 matthew 2043: ." untie(GDBM) Failed ".
2044: "while attempting idput\n";
1.1 albertel 2045: }
2046: } else {
1.109 foxr 2047: print $client "error: ".($!+0)
1.111 matthew 2048: ." tie(GDBM) Failed ".
2049: "while attempting idput\n";
1.1 albertel 2050: }
2051: # ----------------------------------------------------------------------- idget
2052: } elsif ($userinput =~ /^idget/) {
2053: my ($cmd,$udom,$what)=split(/:/,$userinput);
2054: chomp($what);
2055: $udom=~s/\W//g;
2056: my $proname="$perlvar{'lonUsersDir'}/$udom/ids";
2057: my @queries=split(/\&/,$what);
2058: my $qresult='';
1.134 albertel 2059: my %hash;
2060: if (tie(%hash,'GDBM_File',"$proname.db",&GDBM_READER(),0640)) {
2061: for (my $i=0;$i<=$#queries;$i++) {
1.1 albertel 2062: $qresult.="$hash{$queries[$i]}&";
2063: }
1.4 www 2064: if (untie(%hash)) {
1.134 albertel 2065: $qresult=~s/\&$//;
2066: print $client "$qresult\n";
1.1 albertel 2067: } else {
1.134 albertel 2068: print $client "error: ".($!+0)
2069: ." untie(GDBM) Failed ".
2070: "while attempting idget\n";
1.1 albertel 2071: }
2072: } else {
1.109 foxr 2073: print $client "error: ".($!+0)
1.111 matthew 2074: ." tie(GDBM) Failed ".
2075: "while attempting idget\n";
1.1 albertel 2076: }
1.13 www 2077: # ---------------------------------------------------------------------- tmpput
2078: } elsif ($userinput =~ /^tmpput/) {
2079: my ($cmd,$what)=split(/:/,$userinput);
2080: my $store;
2081: $tmpsnum++;
2082: my $id=$$.'_'.$clientip.'_'.$tmpsnum;
2083: $id=~s/\W/\_/g;
2084: $what=~s/\n//g;
2085: my $execdir=$perlvar{'lonDaemons'};
2086: if ($store=IO::File->new(">$execdir/tmp/$id.tmp")) {
2087: print $store $what;
2088: close $store;
2089: print $client "$id\n";
2090: }
2091: else {
1.109 foxr 2092: print $client "error: ".($!+0)
1.111 matthew 2093: ."IO::File->new Failed ".
2094: "while attempting tmpput\n";
1.13 www 2095: }
2096:
2097: # ---------------------------------------------------------------------- tmpget
2098: } elsif ($userinput =~ /^tmpget/) {
2099: my ($cmd,$id)=split(/:/,$userinput);
2100: chomp($id);
2101: $id=~s/\W/\_/g;
2102: my $store;
2103: my $execdir=$perlvar{'lonDaemons'};
2104: if ($store=IO::File->new("$execdir/tmp/$id.tmp")) {
2105: my $reply=<$store>;
2106: print $client "$reply\n";
2107: close $store;
2108: }
2109: else {
1.109 foxr 2110: print $client "error: ".($!+0)
1.111 matthew 2111: ."IO::File->new Failed ".
2112: "while attempting tmpget\n";
1.13 www 2113: }
2114:
1.110 www 2115: # ---------------------------------------------------------------------- tmpdel
2116: } elsif ($userinput =~ /^tmpdel/) {
2117: my ($cmd,$id)=split(/:/,$userinput);
2118: chomp($id);
2119: $id=~s/\W/\_/g;
2120: my $execdir=$perlvar{'lonDaemons'};
2121: if (unlink("$execdir/tmp/$id.tmp")) {
2122: print $client "ok\n";
2123: } else {
2124: print $client "error: ".($!+0)
1.111 matthew 2125: ."Unlink tmp Failed ".
2126: "while attempting tmpdel\n";
1.110 www 2127: }
1.5 www 2128: # -------------------------------------------------------------------------- ls
2129: } elsif ($userinput =~ /^ls/) {
2130: my ($cmd,$ulsdir)=split(/:/,$userinput);
2131: my $ulsout='';
2132: my $ulsfn;
2133: if (-e $ulsdir) {
1.83 stredwic 2134: if(-d $ulsdir) {
2135: if (opendir(LSDIR,$ulsdir)) {
2136: while ($ulsfn=readdir(LSDIR)) {
2137: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
2138: $ulsout.=$ulsfn.'&'.
2139: join('&',@ulsstats).':';
2140: }
2141: closedir(LSDIR);
2142: }
2143: } else {
2144: my @ulsstats=stat($ulsdir);
2145: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
2146: }
2147: } else {
1.5 www 2148: $ulsout='no_such_dir';
2149: }
1.17 www 2150: if ($ulsout eq '') { $ulsout='empty'; }
1.5 www 2151: print $client "$ulsout\n";
1.136 www 2152: # ----------------------------------------------------------------- setannounce
2153: } elsif ($userinput =~ /^setannounce/) {
2154: my ($cmd,$announcement)=split(/:/,$userinput);
2155: chomp($announcement);
2156: $announcement=&unescape($announcement);
2157: if (my $store=IO::File->new('>'.$perlvar{'lonDocRoot'}.
2158: '/announcement.txt')) {
2159: print $store $announcement;
2160: close $store;
2161: print $client "ok\n";
2162: } else {
2163: print $client "error: ".($!+0)."\n";
2164: }
1.51 www 2165: # ------------------------------------------------------------------ Hanging up
2166: } elsif (($userinput =~ /^exit/) ||
2167: ($userinput =~ /^init/)) {
2168: &logthis(
2169: "Client $clientip ($hostid{$clientip}) hanging up: $userinput");
2170: print $client "bye\n";
1.59 www 2171: $client->close();
1.51 www 2172: last;
1.1 albertel 2173: # ------------------------------------------------------------- unknown command
1.121 albertel 2174: } elsif ($userinput =~ /^sethost:/) {
2175: print $client &sethost($userinput)."\n";
2176: } elsif ($userinput =~/^version:/) {
2177: print $client &version($userinput)."\n";
1.1 albertel 2178: } else {
2179: # unknown command
2180: print $client "unknown_cmd\n";
2181: }
1.58 www 2182: # -------------------------------------------------------------------- complete
1.63 www 2183: alarm(0);
1.58 www 2184: &status('Listening to '.$hostid{$clientip});
2185: }
1.59 www 2186: # --------------------------------------------- client unknown or fishy, refuse
1.1 albertel 2187: } else {
2188: print $client "refused\n";
1.59 www 2189: $client->close();
1.9 www 2190: &logthis("<font color=blue>WARNING: "
2191: ."Rejected client $clientip, closing connection</font>");
1.75 foxr 2192: }
1.106 foxr 2193: }
1.75 foxr 2194:
1.1 albertel 2195: # =============================================================================
1.75 foxr 2196:
2197: &logthis("<font color=red>CRITICAL: "
2198: ."Disconnect from $clientip ($hostid{$clientip})</font>");
1.106 foxr 2199:
1.59 www 2200:
1.1 albertel 2201: # this exit is VERY important, otherwise the child will become
2202: # a producer of more and more children, forking yourself into
2203: # process death.
2204: exit;
1.106 foxr 2205:
1.78 foxr 2206: }
2207:
2208:
2209: #
2210: # Checks to see if the input roleput request was to set
2211: # an author role. If so, invokes the lchtmldir script to set
2212: # up a correct public_html
2213: # Parameters:
2214: # request - The request sent to the rolesput subchunk.
2215: # We're looking for /domain/_au
2216: # domain - The domain in which the user is having roles doctored.
2217: # user - Name of the user for which the role is being put.
2218: # authtype - The authentication type associated with the user.
2219: #
2220: sub ManagePermissions
2221: {
2222: my $request = shift;
2223: my $domain = shift;
2224: my $user = shift;
2225: my $authtype= shift;
2226:
2227: # See if the request is of the form /$domain/_au
1.134 albertel 2228: &logthis("ruequest is $request");
1.78 foxr 2229: if($request =~ /^(\/$domain\/_au)$/) { # It's an author rolesput...
2230: my $execdir = $perlvar{'lonDaemons'};
2231: my $userhome= "/home/$user" ;
1.134 albertel 2232: &logthis("system $execdir/lchtmldir $userhome $user $authtype");
1.78 foxr 2233: system("$execdir/lchtmldir $userhome $user $authtype");
2234: }
2235: }
2236: #
2237: # GetAuthType - Determines the authorization type of a user in a domain.
2238:
2239: # Returns the authorization type or nouser if there is no such user.
2240: #
2241: sub GetAuthType
2242: {
2243: my $domain = shift;
2244: my $user = shift;
2245:
1.79 foxr 2246: Debug("GetAuthType( $domain, $user ) \n");
1.78 foxr 2247: my $proname = &propath($domain, $user);
2248: my $passwdfile = "$proname/passwd";
2249: if( -e $passwdfile ) {
2250: my $pf = IO::File->new($passwdfile);
2251: my $realpassword = <$pf>;
2252: chomp($realpassword);
1.79 foxr 2253: Debug("Password info = $realpassword\n");
1.78 foxr 2254: my ($authtype, $contentpwd) = split(/:/, $realpassword);
1.79 foxr 2255: Debug("Authtype = $authtype, content = $contentpwd\n");
1.78 foxr 2256: my $availinfo = '';
1.91 albertel 2257: if($authtype eq 'krb4' or $authtype eq 'krb5') {
1.78 foxr 2258: $availinfo = $contentpwd;
2259: }
1.79 foxr 2260:
1.78 foxr 2261: return "$authtype:$availinfo";
2262: }
2263: else {
1.79 foxr 2264: Debug("Returning nouser");
1.78 foxr 2265: return "nouser";
2266: }
1.1 albertel 2267: }
2268:
1.84 albertel 2269: sub addline {
2270: my ($fname,$hostid,$ip,$newline)=@_;
2271: my $contents;
2272: my $found=0;
2273: my $expr='^'.$hostid.':'.$ip.':';
2274: $expr =~ s/\./\\\./g;
1.134 albertel 2275: my $sh;
1.84 albertel 2276: if ($sh=IO::File->new("$fname.subscription")) {
2277: while (my $subline=<$sh>) {
2278: if ($subline !~ /$expr/) {$contents.= $subline;} else {$found=1;}
2279: }
2280: $sh->close();
2281: }
2282: $sh=IO::File->new(">$fname.subscription");
2283: if ($contents) { print $sh $contents; }
2284: if ($newline) { print $sh $newline; }
2285: $sh->close();
2286: return $found;
1.86 www 2287: }
2288:
2289: sub getchat {
1.122 www 2290: my ($cdom,$cname,$udom,$uname)=@_;
1.87 www 2291: my %hash;
2292: my $proname=&propath($cdom,$cname);
2293: my @entries=();
1.88 albertel 2294: if (tie(%hash,'GDBM_File',"$proname/nohist_chatroom.db",
2295: &GDBM_READER(),0640)) {
2296: @entries=map { $_.':'.$hash{$_} } sort keys %hash;
2297: untie %hash;
1.123 www 2298: }
1.124 www 2299: my @participants=();
1.134 albertel 2300: my $cutoff=time-60;
1.123 www 2301: if (tie(%hash,'GDBM_File',"$proname/nohist_inchatroom.db",
1.124 www 2302: &GDBM_WRCREAT(),0640)) {
2303: $hash{$uname.':'.$udom}=time;
1.123 www 2304: foreach (sort keys %hash) {
2305: if ($hash{$_}>$cutoff) {
1.124 www 2306: $participants[$#participants+1]='active_participant:'.$_;
1.123 www 2307: }
2308: }
2309: untie %hash;
1.86 www 2310: }
1.124 www 2311: return (@participants,@entries);
1.86 www 2312: }
2313:
2314: sub chatadd {
1.88 albertel 2315: my ($cdom,$cname,$newchat)=@_;
2316: my %hash;
2317: my $proname=&propath($cdom,$cname);
2318: my @entries=();
1.142 www 2319: my $time=time;
1.88 albertel 2320: if (tie(%hash,'GDBM_File',"$proname/nohist_chatroom.db",
2321: &GDBM_WRCREAT(),0640)) {
2322: @entries=map { $_.':'.$hash{$_} } sort keys %hash;
2323: my ($lastid)=($entries[$#entries]=~/^(\w+)\:/);
2324: my ($thentime,$idnum)=split(/\_/,$lastid);
2325: my $newid=$time.'_000000';
2326: if ($thentime==$time) {
2327: $idnum=~s/^0+//;
2328: $idnum++;
2329: $idnum=substr('000000'.$idnum,-6,6);
2330: $newid=$time.'_'.$idnum;
2331: }
2332: $hash{$newid}=$newchat;
2333: my $expired=$time-3600;
2334: foreach (keys %hash) {
2335: my ($thistime)=($_=~/(\d+)\_/);
2336: if ($thistime<$expired) {
1.89 www 2337: delete $hash{$_};
1.88 albertel 2338: }
2339: }
2340: untie %hash;
1.142 www 2341: }
2342: {
2343: my $hfh;
2344: if ($hfh=IO::File->new(">>$proname/chatroom.log")) {
2345: print $hfh "$time:".&unescape($newchat)."\n";
2346: }
1.86 www 2347: }
1.84 albertel 2348: }
2349:
2350: sub unsub {
2351: my ($fname,$clientip)=@_;
2352: my $result;
2353: if (unlink("$fname.$hostid{$clientip}")) {
2354: $result="ok\n";
2355: } else {
2356: $result="not_subscribed\n";
2357: }
2358: if (-e "$fname.subscription") {
2359: my $found=&addline($fname,$hostid{$clientip},$clientip,'');
2360: if ($found) { $result="ok\n"; }
2361: } else {
2362: if ($result != "ok\n") { $result="not_subscribed\n"; }
2363: }
2364: return $result;
2365: }
2366:
1.101 www 2367: sub currentversion {
2368: my $fname=shift;
2369: my $version=-1;
2370: my $ulsdir='';
2371: if ($fname=~/^(.+)\/[^\/]+$/) {
2372: $ulsdir=$1;
2373: }
1.114 albertel 2374: my ($fnamere1,$fnamere2);
2375: # remove version if already specified
1.101 www 2376: $fname=~s/\.\d+\.(\w+(?:\.meta)*)$/\.$1/;
1.114 albertel 2377: # get the bits that go before and after the version number
2378: if ( $fname=~/^(.*\.)(\w+(?:\.meta)*)$/ ) {
2379: $fnamere1=$1;
2380: $fnamere2='.'.$2;
2381: }
1.101 www 2382: if (-e $fname) { $version=1; }
2383: if (-e $ulsdir) {
1.134 albertel 2384: if(-d $ulsdir) {
2385: if (opendir(LSDIR,$ulsdir)) {
2386: my $ulsfn;
2387: while ($ulsfn=readdir(LSDIR)) {
1.101 www 2388: # see if this is a regular file (ignore links produced earlier)
1.134 albertel 2389: my $thisfile=$ulsdir.'/'.$ulsfn;
2390: unless (-l $thisfile) {
2391: if ($thisfile=~/\Q$fnamere1\E(\d+)\Q$fnamere2\E/) {
2392: if ($1>$version) { $version=$1; }
2393: }
2394: }
2395: }
2396: closedir(LSDIR);
2397: $version++;
2398: }
2399: }
2400: }
2401: return $version;
1.101 www 2402: }
2403:
2404: sub thisversion {
2405: my $fname=shift;
2406: my $version=-1;
2407: if ($fname=~/\.(\d+)\.\w+(?:\.meta)*$/) {
2408: $version=$1;
2409: }
2410: return $version;
2411: }
2412:
1.84 albertel 2413: sub subscribe {
2414: my ($userinput,$clientip)=@_;
2415: my $result;
2416: my ($cmd,$fname)=split(/:/,$userinput);
2417: my $ownership=&ishome($fname);
2418: if ($ownership eq 'owner') {
1.101 www 2419: # explitly asking for the current version?
2420: unless (-e $fname) {
2421: my $currentversion=¤tversion($fname);
2422: if (&thisversion($fname)==$currentversion) {
2423: if ($fname=~/^(.+)\.\d+\.(\w+(?:\.meta)*)$/) {
2424: my $root=$1;
2425: my $extension=$2;
2426: symlink($root.'.'.$extension,
2427: $root.'.'.$currentversion.'.'.$extension);
1.102 www 2428: unless ($extension=~/\.meta$/) {
2429: symlink($root.'.'.$extension.'.meta',
2430: $root.'.'.$currentversion.'.'.$extension.'.meta');
2431: }
1.101 www 2432: }
2433: }
2434: }
1.84 albertel 2435: if (-e $fname) {
2436: if (-d $fname) {
2437: $result="directory\n";
2438: } else {
2439: if (-e "$fname.$hostid{$clientip}") {&unsub($fname,$clientip);}
1.134 albertel 2440: my $now=time;
1.84 albertel 2441: my $found=&addline($fname,$hostid{$clientip},$clientip,
2442: "$hostid{$clientip}:$clientip:$now\n");
2443: if ($found) { $result="$fname\n"; }
2444: # if they were subscribed to only meta data, delete that
2445: # subscription, when you subscribe to a file you also get
2446: # the metadata
2447: unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); }
2448: $fname=~s/\/home\/httpd\/html\/res/raw/;
2449: $fname="http://$thisserver/".$fname;
2450: $result="$fname\n";
2451: }
2452: } else {
2453: $result="not_found\n";
2454: }
2455: } else {
2456: $result="rejected\n";
2457: }
2458: return $result;
2459: }
1.91 albertel 2460:
2461: sub make_passwd_file {
1.98 foxr 2462: my ($uname, $umode,$npass,$passfilename)=@_;
1.91 albertel 2463: my $result="ok\n";
2464: if ($umode eq 'krb4' or $umode eq 'krb5') {
2465: {
2466: my $pf = IO::File->new(">$passfilename");
2467: print $pf "$umode:$npass\n";
2468: }
2469: } elsif ($umode eq 'internal') {
2470: my $salt=time;
2471: $salt=substr($salt,6,2);
2472: my $ncpass=crypt($npass,$salt);
2473: {
2474: &Debug("Creating internal auth");
2475: my $pf = IO::File->new(">$passfilename");
2476: print $pf "internal:$ncpass\n";
2477: }
2478: } elsif ($umode eq 'localauth') {
2479: {
2480: my $pf = IO::File->new(">$passfilename");
2481: print $pf "localauth:$npass\n";
2482: }
2483: } elsif ($umode eq 'unix') {
2484: {
2485: my $execpath="$perlvar{'lonDaemons'}/"."lcuseradd";
2486: {
2487: &Debug("Executing external: ".$execpath);
1.98 foxr 2488: &Debug("user = ".$uname.", Password =". $npass);
1.132 matthew 2489: my $se = IO::File->new("|$execpath > $perlvar{'lonDaemons'}/logs/lcuseradd.log");
1.91 albertel 2490: print $se "$uname\n";
2491: print $se "$npass\n";
2492: print $se "$npass\n";
1.97 foxr 2493: }
2494: my $useraddok = $?;
2495: if($useraddok > 0) {
2496: &logthis("Failed lcuseradd: ".&lcuseraddstrerror($useraddok));
1.91 albertel 2497: }
2498: my $pf = IO::File->new(">$passfilename");
2499: print $pf "unix:\n";
2500: }
2501: } elsif ($umode eq 'none') {
2502: {
2503: my $pf = IO::File->new(">$passfilename");
2504: print $pf "none:\n";
2505: }
2506: } else {
2507: $result="auth_mode_error\n";
2508: }
2509: return $result;
1.121 albertel 2510: }
2511:
2512: sub sethost {
2513: my ($remotereq) = @_;
2514: my (undef,$hostid)=split(/:/,$remotereq);
2515: if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; }
2516: if ($hostip{$perlvar{'lonHostID'}} eq $hostip{$hostid}) {
2517: $currenthostid=$hostid;
2518: $currentdomainid=$hostdom{$hostid};
2519: &logthis("Setting hostid to $hostid, and domain to $currentdomainid");
2520: } else {
2521: &logthis("Requested host id $hostid not an alias of ".
2522: $perlvar{'lonHostID'}." refusing connection");
2523: return 'unable_to_set';
2524: }
2525: return 'ok';
2526: }
2527:
2528: sub version {
2529: my ($userinput)=@_;
2530: $remoteVERSION=(split(/:/,$userinput))[1];
2531: return "version:$VERSION";
1.127 albertel 2532: }
2533:
1.128 albertel 2534: #There is a copy of this in lonnet.pm
1.127 albertel 2535: sub userload {
2536: my $numusers=0;
2537: {
2538: opendir(LONIDS,$perlvar{'lonIDsDir'});
2539: my $filename;
2540: my $curtime=time;
2541: while ($filename=readdir(LONIDS)) {
2542: if ($filename eq '.' || $filename eq '..') {next;}
1.138 albertel 2543: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
2544: if ($curtime-$mtime < 3600) { $numusers++; }
1.127 albertel 2545: }
2546: closedir(LONIDS);
2547: }
2548: my $userloadpercent=0;
2549: my $maxuserload=$perlvar{'lonUserLoadLim'};
2550: if ($maxuserload) {
1.129 albertel 2551: $userloadpercent=100*$numusers/$maxuserload;
1.127 albertel 2552: }
1.130 albertel 2553: $userloadpercent=sprintf("%.2f",$userloadpercent);
1.127 albertel 2554: return $userloadpercent;
1.91 albertel 2555: }
2556:
1.61 harris41 2557: # ----------------------------------- POD (plain old documentation, CPAN style)
2558:
2559: =head1 NAME
2560:
2561: lond - "LON Daemon" Server (port "LOND" 5663)
2562:
2563: =head1 SYNOPSIS
2564:
1.74 harris41 2565: Usage: B<lond>
2566:
2567: Should only be run as user=www. This is a command-line script which
2568: is invoked by B<loncron>. There is no expectation that a typical user
2569: will manually start B<lond> from the command-line. (In other words,
2570: DO NOT START B<lond> YOURSELF.)
1.61 harris41 2571:
2572: =head1 DESCRIPTION
2573:
1.74 harris41 2574: There are two characteristics associated with the running of B<lond>,
2575: PROCESS MANAGEMENT (starting, stopping, handling child processes)
2576: and SERVER-SIDE ACTIVITIES (password authentication, user creation,
2577: subscriptions, etc). These are described in two large
2578: sections below.
2579:
2580: B<PROCESS MANAGEMENT>
2581:
1.61 harris41 2582: Preforker - server who forks first. Runs as a daemon. HUPs.
2583: Uses IDEA encryption
2584:
1.74 harris41 2585: B<lond> forks off children processes that correspond to the other servers
2586: in the network. Management of these processes can be done at the
2587: parent process level or the child process level.
2588:
2589: B<logs/lond.log> is the location of log messages.
2590:
2591: The process management is now explained in terms of linux shell commands,
2592: subroutines internal to this code, and signal assignments:
2593:
2594: =over 4
2595:
2596: =item *
2597:
2598: PID is stored in B<logs/lond.pid>
2599:
2600: This is the process id number of the parent B<lond> process.
2601:
2602: =item *
2603:
2604: SIGTERM and SIGINT
2605:
2606: Parent signal assignment:
2607: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
2608:
2609: Child signal assignment:
2610: $SIG{INT} = 'DEFAULT'; (and SIGTERM is DEFAULT also)
2611: (The child dies and a SIGALRM is sent to parent, awaking parent from slumber
2612: to restart a new child.)
2613:
2614: Command-line invocations:
2615: B<kill> B<-s> SIGTERM I<PID>
2616: B<kill> B<-s> SIGINT I<PID>
2617:
2618: Subroutine B<HUNTSMAN>:
2619: This is only invoked for the B<lond> parent I<PID>.
2620: This kills all the children, and then the parent.
2621: The B<lonc.pid> file is cleared.
2622:
2623: =item *
2624:
2625: SIGHUP
2626:
2627: Current bug:
2628: This signal can only be processed the first time
2629: on the parent process. Subsequent SIGHUP signals
2630: have no effect.
2631:
2632: Parent signal assignment:
2633: $SIG{HUP} = \&HUPSMAN;
2634:
2635: Child signal assignment:
2636: none (nothing happens)
2637:
2638: Command-line invocations:
2639: B<kill> B<-s> SIGHUP I<PID>
2640:
2641: Subroutine B<HUPSMAN>:
2642: This is only invoked for the B<lond> parent I<PID>,
2643: This kills all the children, and then the parent.
2644: The B<lond.pid> file is cleared.
2645:
2646: =item *
2647:
2648: SIGUSR1
2649:
2650: Parent signal assignment:
2651: $SIG{USR1} = \&USRMAN;
2652:
2653: Child signal assignment:
2654: $SIG{USR1}= \&logstatus;
2655:
2656: Command-line invocations:
2657: B<kill> B<-s> SIGUSR1 I<PID>
2658:
2659: Subroutine B<USRMAN>:
2660: When invoked for the B<lond> parent I<PID>,
2661: SIGUSR1 is sent to all the children, and the status of
2662: each connection is logged.
1.144 foxr 2663:
2664: =item *
2665:
2666: SIGUSR2
2667:
2668: Parent Signal assignment:
2669: $SIG{USR2} = \&UpdateHosts
2670:
2671: Child signal assignment:
2672: NONE
2673:
1.74 harris41 2674:
2675: =item *
2676:
2677: SIGCHLD
2678:
2679: Parent signal assignment:
2680: $SIG{CHLD} = \&REAPER;
2681:
2682: Child signal assignment:
2683: none
2684:
2685: Command-line invocations:
2686: B<kill> B<-s> SIGCHLD I<PID>
2687:
2688: Subroutine B<REAPER>:
2689: This is only invoked for the B<lond> parent I<PID>.
2690: Information pertaining to the child is removed.
2691: The socket port is cleaned up.
2692:
2693: =back
2694:
2695: B<SERVER-SIDE ACTIVITIES>
2696:
2697: Server-side information can be accepted in an encrypted or non-encrypted
2698: method.
2699:
2700: =over 4
2701:
2702: =item ping
2703:
2704: Query a client in the hosts.tab table; "Are you there?"
2705:
2706: =item pong
2707:
2708: Respond to a ping query.
2709:
2710: =item ekey
2711:
2712: Read in encrypted key, make cipher. Respond with a buildkey.
2713:
2714: =item load
2715:
2716: Respond with CPU load based on a computation upon /proc/loadavg.
2717:
2718: =item currentauth
2719:
2720: Reply with current authentication information (only over an
2721: encrypted channel).
2722:
2723: =item auth
2724:
2725: Only over an encrypted channel, reply as to whether a user's
2726: authentication information can be validated.
2727:
2728: =item passwd
2729:
2730: Allow for a password to be set.
2731:
2732: =item makeuser
2733:
2734: Make a user.
2735:
2736: =item passwd
2737:
2738: Allow for authentication mechanism and password to be changed.
2739:
2740: =item home
1.61 harris41 2741:
1.74 harris41 2742: Respond to a question "are you the home for a given user?"
2743:
2744: =item update
2745:
2746: Update contents of a subscribed resource.
2747:
2748: =item unsubscribe
2749:
2750: The server is unsubscribing from a resource.
2751:
2752: =item subscribe
2753:
2754: The server is subscribing to a resource.
2755:
2756: =item log
2757:
2758: Place in B<logs/lond.log>
2759:
2760: =item put
2761:
2762: stores hash in namespace
2763:
2764: =item rolesput
2765:
2766: put a role into a user's environment
2767:
2768: =item get
2769:
2770: returns hash with keys from array
2771: reference filled in from namespace
2772:
2773: =item eget
2774:
2775: returns hash with keys from array
2776: reference filled in from namesp (encrypts the return communication)
2777:
2778: =item rolesget
2779:
2780: get a role from a user's environment
2781:
2782: =item del
2783:
2784: deletes keys out of array from namespace
2785:
2786: =item keys
2787:
2788: returns namespace keys
2789:
2790: =item dump
2791:
2792: dumps the complete (or key matching regexp) namespace into a hash
2793:
2794: =item store
2795:
2796: stores hash permanently
2797: for this url; hashref needs to be given and should be a \%hashname; the
2798: remaining args aren't required and if they aren't passed or are '' they will
2799: be derived from the ENV
2800:
2801: =item restore
2802:
2803: returns a hash for a given url
2804:
2805: =item querysend
2806:
2807: Tells client about the lonsql process that has been launched in response
2808: to a sent query.
2809:
2810: =item queryreply
2811:
2812: Accept information from lonsql and make appropriate storage in temporary
2813: file space.
2814:
2815: =item idput
2816:
2817: Defines usernames as corresponding to IDs. (These "IDs" are unique identifiers
2818: for each student, defined perhaps by the institutional Registrar.)
2819:
2820: =item idget
2821:
2822: Returns usernames corresponding to IDs. (These "IDs" are unique identifiers
2823: for each student, defined perhaps by the institutional Registrar.)
2824:
2825: =item tmpput
2826:
2827: Accept and store information in temporary space.
2828:
2829: =item tmpget
2830:
2831: Send along temporarily stored information.
2832:
2833: =item ls
2834:
2835: List part of a user's directory.
2836:
1.135 foxr 2837: =item pushtable
2838:
2839: Pushes a file in /home/httpd/lonTab directory. Currently limited to:
2840: hosts.tab and domain.tab. The old file is copied to *.tab.backup but
2841: must be restored manually in case of a problem with the new table file.
2842: pushtable requires that the request be encrypted and validated via
2843: ValidateManager. The form of the command is:
2844: enc:pushtable tablename <tablecontents> \n
2845: where pushtable, tablename and <tablecontents> will be encrypted, but \n is a
2846: cleartext newline.
2847:
1.74 harris41 2848: =item Hanging up (exit or init)
2849:
2850: What to do when a client tells the server that they (the client)
2851: are leaving the network.
2852:
2853: =item unknown command
2854:
2855: If B<lond> is sent an unknown command (not in the list above),
2856: it replys to the client "unknown_cmd".
1.135 foxr 2857:
1.74 harris41 2858:
2859: =item UNKNOWN CLIENT
2860:
2861: If the anti-spoofing algorithm cannot verify the client,
2862: the client is rejected (with a "refused" message sent
2863: to the client, and the connection is closed.
2864:
2865: =back
1.61 harris41 2866:
2867: =head1 PREREQUISITES
2868:
2869: IO::Socket
2870: IO::File
2871: Apache::File
2872: Symbol
2873: POSIX
2874: Crypt::IDEA
2875: LWP::UserAgent()
2876: GDBM_File
2877: Authen::Krb4
1.91 albertel 2878: Authen::Krb5
1.61 harris41 2879:
2880: =head1 COREQUISITES
2881:
2882: =head1 OSNAMES
2883:
2884: linux
2885:
2886: =head1 SCRIPT CATEGORIES
2887:
2888: Server/Process
2889:
2890: =cut
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