Annotation of loncom/lond, revision 1.152
1.1 albertel 1: #!/usr/bin/perl
2: # The LearningOnline Network
3: # lond "LON Daemon" Server (port "LOND" 5663)
1.60 www 4: #
1.152 ! www 5: # $Id: lond,v 1.151 2003/10/03 15:11:03 albertel 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 $
1.152 ! www 63: # Revision 1.151 2003/10/03 15:11:03 albertel
! 64: # - if we fail to fetch an update to the file, don't blow away the old one
! 65: # (this was the BUG that blew away that one default.sequence that Matthew
! 66: # ended up restoring from data.)
! 67: #
1.151 albertel 68: # Revision 1.150 2003/09/30 10:16:06 foxr
69: # Added invocation of apachereload in ReloadApache sub.
70: # This completes the addtion of the reinit functionality.
71: #
1.150 foxr 72: # Revision 1.149 2003/09/30 09:44:13 foxr
73: # Tested UpdateHosts ability to
74: # - Remove live children for hosts that are no longer in the hosts.tab
75: # - Remove live children for hosts whose IPs have changed in the hosts.tab
76: #
1.149 foxr 77: # Revision 1.148 2003/09/29 10:09:18 foxr
78: # Put in logic to reinit lond itself (except for apache reload). I don't believe
79: # this logic works correctly yet, however lond still does everything it used to doso I'll do the commit anyway.
80: #
1.148 foxr 81: # Revision 1.147 2003/09/23 11:23:31 foxr
82: # Comlplete implementation of reinit functionality. Must still implement
83: # the actual initialization functionality, but the process can now
84: # receive the request and either invoke the appropriate internal function or
85: # signal the correct lonc.
86: #
1.147 foxr 87: # Revision 1.146 2003/09/16 10:28:14 foxr
88: # ReinitProcess - decode the process selector and produce the associated pid
89: # filename. Note: While it is possible to test that valid process selectors are
90: # handled properly I am not able to test that invalid process selectors produce
91: # the appropriate error as lonManage also blocks the use of invalid process selectors.
92: #
1.146 foxr 93: # Revision 1.145 2003/09/16 10:13:20 foxr
94: # Added ReinitProcess function to oversee the parsing and processing of the
95: # reinit:<process> client request.
96: #
1.145 foxr 97: # Revision 1.144 2003/09/16 09:47:01 foxr
98: # Added skeletal support for SIGUSR2 (update hosts.tab)
99: #
1.144 foxr 100: # Revision 1.143 2003/09/15 10:03:52 foxr
101: # Completed and tested code for pushfile.
102: #
1.143 foxr 103: # Revision 1.142 2003/09/09 20:47:46 www
104: # Permanently store chatroom entries in chatroom.log
105: #
1.142 www 106: # Revision 1.141 2003/09/08 10:32:07 foxr
107: # Added PushFile sub This sub oversees the push of a new configuration table file
108: # Currently supported files are:
109: # - hosts.tab (transaction pushfile:hosts:contents)
110: # - domain.tab (transaction pushfile:domain:contents)
111: #
1.141 foxr 112:
1.54 harris41 113:
1.134 albertel 114: use strict;
1.80 harris41 115: use lib '/home/httpd/lib/perl/';
116: use LONCAPA::Configuration;
117:
1.1 albertel 118: use IO::Socket;
119: use IO::File;
1.126 albertel 120: #use Apache::File;
1.1 albertel 121: use Symbol;
122: use POSIX;
123: use Crypt::IDEA;
124: use LWP::UserAgent();
1.3 www 125: use GDBM_File;
126: use Authen::Krb4;
1.91 albertel 127: use Authen::Krb5;
1.49 albertel 128: use lib '/home/httpd/lib/perl/';
129: use localauth;
1.143 foxr 130: use File::Copy;
1.1 albertel 131:
1.77 foxr 132: my $DEBUG = 0; # Non zero to enable debug log entries.
133:
1.57 www 134: my $status='';
135: my $lastlog='';
136:
1.152 ! www 137: my $VERSION='$Revision: 1.151 $'; #' stupid emacs
1.121 albertel 138: my $remoteVERSION;
1.115 albertel 139: my $currenthostid;
140: my $currentdomainid;
1.134 albertel 141:
142: my $client;
1.140 foxr 143: my $clientip;
144:
1.134 albertel 145: my $server;
146: my $thisserver;
147:
148: my %hostid;
149: my %hostdom;
150: my %hostip;
1.141 foxr 151: my %perlvar; # Will have the apache conf defined perl vars.
1.134 albertel 152:
1.96 foxr 153: #
154: # The array below are password error strings."
155: #
1.97 foxr 156: my $lastpwderror = 13; # Largest error number from lcpasswd.
1.96 foxr 157: my @passwderrors = ("ok",
158: "lcpasswd must be run as user 'www'",
159: "lcpasswd got incorrect number of arguments",
160: "lcpasswd did not get the right nubmer of input text lines",
161: "lcpasswd too many simultaneous pwd changes in progress",
162: "lcpasswd User does not exist.",
163: "lcpasswd Incorrect current passwd",
164: "lcpasswd Unable to su to root.",
165: "lcpasswd Cannot set new passwd.",
166: "lcpasswd Username has invalid characters",
1.97 foxr 167: "lcpasswd Invalid characters in password",
168: "11", "12",
169: "lcpasswd Password mismatch");
170:
171:
172: # The array below are lcuseradd error strings.:
173:
174: my $lastadderror = 13;
175: my @adderrors = ("ok",
176: "User ID mismatch, lcuseradd must run as user www",
177: "lcuseradd Incorrect number of command line parameters must be 3",
178: "lcuseradd Incorrect number of stdinput lines, must be 3",
179: "lcuseradd Too many other simultaneous pwd changes in progress",
180: "lcuseradd User does not exist",
181: "lcuseradd Unabel to mak ewww member of users's group",
182: "lcuseradd Unable to su to root",
183: "lcuseradd Unable to set password",
184: "lcuseradd Usrname has invbalid charcters",
185: "lcuseradd Password has an invalid character",
186: "lcuseradd User already exists",
187: "lcuseradd Could not add user.",
188: "lcuseradd Password mismatch");
189:
1.96 foxr 190:
191: #
1.140 foxr 192: # GetCertificate: Given a transaction that requires a certificate,
193: # this function will extract the certificate from the transaction
194: # request. Note that at this point, the only concept of a certificate
195: # is the hostname to which we are connected.
196: #
197: # Parameter:
198: # request - The request sent by our client (this parameterization may
199: # need to change when we really use a certificate granting
200: # authority.
201: #
202: sub GetCertificate {
203: my $request = shift;
204:
205: return $clientip;
206: }
207:
208:
209: #
210: # ValidManager: Determines if a given certificate represents a valid manager.
211: # in this primitive implementation, the 'certificate' is
212: # just the connecting loncapa client name. This is checked
213: # against a valid client list in the configuration.
214: #
215: #
216: sub ValidManager {
217: my $certificate = shift;
218:
219: my $hostentry = $hostid{$certificate};
220: if ($hostentry ne undef) {
221: &logthis('<font color="yellow">Authenticating manager'.
222: " $hostentry</font>");
223: return 1;
224: } else {
225: &logthis('<font color="red"> Failed manager authentication '.
226: "$certificate </font>");
227: }
228: }
229: #
1.143 foxr 230: # CopyFile: Called as part of the process of installing a
231: # new configuration file. This function copies an existing
232: # file to a backup file.
233: # Parameters:
234: # oldfile - Name of the file to backup.
235: # newfile - Name of the backup file.
236: # Return:
237: # 0 - Failure (errno has failure reason).
238: # 1 - Success.
239: #
240: sub CopyFile {
241: my $oldfile = shift;
242: my $newfile = shift;
243:
244: # The file must exist:
245:
246: if(-e $oldfile) {
247:
248: # Read the old file.
249:
250: my $oldfh = IO::File->new("< $oldfile");
251: if(!$oldfh) {
252: return 0;
253: }
254: my @contents = <$oldfh>; # Suck in the entire file.
255:
256: # write the backup file:
257:
258: my $newfh = IO::File->new("> $newfile");
259: if(!(defined $newfh)){
260: return 0;
261: }
262: my $lines = scalar @contents;
263: for (my $i =0; $i < $lines; $i++) {
264: print $newfh ($contents[$i]);
265: }
266:
267: $oldfh->close;
268: $newfh->close;
269:
270: chmod(0660, $newfile);
271:
272: return 1;
273:
274: } else {
275: return 0;
276: }
277: }
278:
279: #
280: # InstallFile: Called to install an administrative file:
281: # - The file is created with <name>.tmp
282: # - The <name>.tmp file is then mv'd to <name>
283: # This lugubrious procedure is done to ensure that we are never without
284: # a valid, even if dated, version of the file regardless of who crashes
285: # and when the crash occurs.
286: #
287: # Parameters:
288: # Name of the file
289: # File Contents.
290: # Return:
291: # nonzero - success.
292: # 0 - failure and $! has an errno.
293: #
294: sub InstallFile {
295: my $Filename = shift;
296: my $Contents = shift;
297: my $TempFile = $Filename.".tmp";
298:
299: # Open the file for write:
300:
301: my $fh = IO::File->new("> $TempFile"); # Write to temp.
302: if(!(defined $fh)) {
303: &logthis('<font color="red"> Unable to create '.$TempFile."</font>");
304: return 0;
305: }
306: # write the contents of the file:
307:
308: print $fh ($Contents);
309: $fh->close; # In case we ever have a filesystem w. locking
310:
311: chmod(0660, $TempFile);
312:
313: # Now we can move install the file in position.
314:
315: move($TempFile, $Filename);
316:
317: return 1;
318: }
319:
320: #
1.141 foxr 321: # PushFile: Called to do an administrative push of a file.
322: # - Ensure the file being pushed is one we support.
323: # - Backup the old file to <filename.saved>
324: # - Separate the contents of the new file out from the
325: # rest of the request.
326: # - Write the new file.
327: # Parameter:
328: # Request - The entire user request. This consists of a : separated
329: # string pushfile:tablename:contents.
330: # NOTE: The contents may have :'s in it as well making things a bit
331: # more interesting... but not much.
332: # Returns:
333: # String to send to client ("ok" or "refused" if bad file).
334: #
335: sub PushFile {
336: my $request = shift;
337: my ($command, $filename, $contents) = split(":", $request, 3);
338:
339: # At this point in time, pushes for only the following tables are
340: # supported:
341: # hosts.tab ($filename eq host).
342: # domain.tab ($filename eq domain).
343: # Construct the destination filename or reject the request.
344: #
345: # lonManage is supposed to ensure this, however this session could be
346: # part of some elaborate spoof that managed somehow to authenticate.
347: #
348:
349: my $tablefile = $perlvar{'lonTabDir'}.'/'; # need to precede with dir.
350: if ($filename eq "host") {
351: $tablefile .= "hosts.tab";
352: } elsif ($filename eq "domain") {
353: $tablefile .= "domain.tab";
354: } else {
355: return "refused";
356: }
357: #
358: # >copy< the old table to the backup table
359: # don't rename in case system crashes/reboots etc. in the time
360: # window between a rename and write.
361: #
362: my $backupfile = $tablefile;
363: $backupfile =~ s/\.tab$/.old/;
1.143 foxr 364: if(!CopyFile($tablefile, $backupfile)) {
365: &logthis('<font color="green"> CopyFile from '.$tablefile." to ".$backupfile." failed </font>");
366: return "error:$!";
367: }
1.141 foxr 368: &logthis('<font color="green"> Pushfile: backed up '
369: .$tablefile." to $backupfile</font>");
370:
371: # Install the new file:
372:
1.143 foxr 373: if(!InstallFile($tablefile, $contents)) {
374: &logthis('<font color="red"> Pushfile: unable to install '
1.145 foxr 375: .$tablefile." $! </font>");
1.143 foxr 376: return "error:$!";
377: }
378: else {
379: &logthis('<font color="green"> Installed new '.$tablefile
380: ."</font>");
381:
382: }
383:
1.141 foxr 384:
385: # Indicate success:
386:
387: return "ok";
388:
389: }
1.145 foxr 390:
391: #
392: # Called to re-init either lonc or lond.
393: #
394: # Parameters:
395: # request - The full request by the client. This is of the form
396: # reinit:<process>
397: # where <process> is allowed to be either of
398: # lonc or lond
399: #
400: # Returns:
401: # The string to be sent back to the client either:
402: # ok - Everything worked just fine.
403: # error:why - There was a failure and why describes the reason.
404: #
405: #
406: sub ReinitProcess {
407: my $request = shift;
408:
1.146 foxr 409:
410: # separate the request (reinit) from the process identifier and
411: # validate it producing the name of the .pid file for the process.
412: #
413: #
414: my ($junk, $process) = split(":", $request);
1.147 foxr 415: my $processpidfile = $perlvar{'lonDaemons'}.'/logs/';
1.146 foxr 416: if($process eq 'lonc') {
417: $processpidfile = $processpidfile."lonc.pid";
1.147 foxr 418: if (!open(PIDFILE, "< $processpidfile")) {
419: return "error:Open failed for $processpidfile";
420: }
421: my $loncpid = <PIDFILE>;
422: close(PIDFILE);
423: logthis('<font color="red"> Reinitializing lonc pid='.$loncpid
424: ."</font>");
425: kill("USR2", $loncpid);
1.146 foxr 426: } elsif ($process eq 'lond') {
1.147 foxr 427: logthis('<font color="red"> Reinitializing self (lond) </font>');
428: &UpdateHosts; # Lond is us!!
1.146 foxr 429: } else {
430: &logthis('<font color="yellow" Invalid reinit request for '.$process
431: ."</font>");
432: return "error:Invalid process identifier $process";
433: }
1.145 foxr 434: return 'ok';
435: }
436:
1.141 foxr 437: #
1.96 foxr 438: # Convert an error return code from lcpasswd to a string value.
439: #
440: sub lcpasswdstrerror {
441: my $ErrorCode = shift;
1.97 foxr 442: if(($ErrorCode < 0) || ($ErrorCode > $lastpwderror)) {
1.96 foxr 443: return "lcpasswd Unrecognized error return value ".$ErrorCode;
444: } else {
1.98 foxr 445: return $passwderrors[$ErrorCode];
1.96 foxr 446: }
447: }
448:
1.97 foxr 449: #
450: # Convert an error return code from lcuseradd to a string value:
451: #
452: sub lcuseraddstrerror {
453: my $ErrorCode = shift;
454: if(($ErrorCode < 0) || ($ErrorCode > $lastadderror)) {
455: return "lcuseradd - Unrecognized error code: ".$ErrorCode;
456: } else {
1.98 foxr 457: return $adderrors[$ErrorCode];
1.97 foxr 458: }
459: }
460:
1.23 harris41 461: # grabs exception and records it to log before exiting
462: sub catchexception {
1.27 albertel 463: my ($error)=@_;
1.25 www 464: $SIG{'QUIT'}='DEFAULT';
465: $SIG{__DIE__}='DEFAULT';
1.23 harris41 466: &logthis("<font color=red>CRITICAL: "
1.134 albertel 467: ."ABNORMAL EXIT. Child $$ for server $thisserver died through "
1.27 albertel 468: ."a crash with this error msg->[$error]</font>");
1.57 www 469: &logthis('Famous last words: '.$status.' - '.$lastlog);
1.27 albertel 470: if ($client) { print $client "error: $error\n"; }
1.59 www 471: $server->close();
1.27 albertel 472: die($error);
1.23 harris41 473: }
474:
1.63 www 475: sub timeout {
476: &logthis("<font color=ref>CRITICAL: TIME OUT ".$$."</font>");
477: &catchexception('Timeout');
478: }
1.22 harris41 479: # -------------------------------- Set signal handlers to record abnormal exits
480:
481: $SIG{'QUIT'}=\&catchexception;
482: $SIG{__DIE__}=\&catchexception;
483:
1.81 matthew 484: # ---------------------------------- Read loncapa_apache.conf and loncapa.conf
1.95 harris41 485: &status("Read loncapa.conf and loncapa_apache.conf");
486: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
1.141 foxr 487: %perlvar=%{$perlvarref};
1.80 harris41 488: undef $perlvarref;
1.19 www 489:
1.35 harris41 490: # ----------------------------- Make sure this process is running from user=www
491: my $wwwid=getpwnam('www');
492: if ($wwwid!=$<) {
1.134 albertel 493: my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
494: my $subj="LON: $currenthostid User ID mismatch";
1.37 harris41 495: system("echo 'User ID mismatch. lond must be run as user www.' |\
1.35 harris41 496: mailto $emailto -s '$subj' > /dev/null");
497: exit 1;
498: }
499:
1.19 www 500: # --------------------------------------------- Check if other instance running
501:
502: my $pidfile="$perlvar{'lonDaemons'}/logs/lond.pid";
503:
504: if (-e $pidfile) {
505: my $lfh=IO::File->new("$pidfile");
506: my $pide=<$lfh>;
507: chomp($pide);
1.29 harris41 508: if (kill 0 => $pide) { die "already running"; }
1.19 www 509: }
1.1 albertel 510:
511: # ------------------------------------------------------------- Read hosts file
512:
513:
514:
515: # establish SERVER socket, bind and listen.
516: $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},
517: Type => SOCK_STREAM,
518: Proto => 'tcp',
519: Reuse => 1,
520: Listen => 10 )
1.29 harris41 521: or die "making socket: $@\n";
1.1 albertel 522:
523: # --------------------------------------------------------- Do global variables
524:
525: # global variables
526:
1.134 albertel 527: my %children = (); # keys are current child process IDs
528: my $children = 0; # current number of children
1.1 albertel 529:
530: sub REAPER { # takes care of dead children
531: $SIG{CHLD} = \&REAPER;
532: my $pid = wait;
1.67 albertel 533: if (defined($children{$pid})) {
534: &logthis("Child $pid died");
535: $children --;
536: delete $children{$pid};
537: } else {
538: &logthis("Unknown Child $pid died");
539: }
1.1 albertel 540: }
541:
542: sub HUNTSMAN { # signal handler for SIGINT
543: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
544: kill 'INT' => keys %children;
1.59 www 545: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.1 albertel 546: my $execdir=$perlvar{'lonDaemons'};
547: unlink("$execdir/logs/lond.pid");
1.9 www 548: &logthis("<font color=red>CRITICAL: Shutting down</font>");
1.1 albertel 549: exit; # clean up with dignity
550: }
551:
552: sub HUPSMAN { # signal handler for SIGHUP
553: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
554: kill 'INT' => keys %children;
1.59 www 555: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.9 www 556: &logthis("<font color=red>CRITICAL: Restarting</font>");
1.134 albertel 557: my $execdir=$perlvar{'lonDaemons'};
1.30 harris41 558: unlink("$execdir/logs/lond.pid");
1.1 albertel 559: exec("$execdir/lond"); # here we go again
560: }
561:
1.144 foxr 562: #
1.148 foxr 563: # Kill off hashes that describe the host table prior to re-reading it.
564: # Hashes affected are:
565: # %hostid, %hostdom %hostip
566: #
567: sub KillHostHashes {
568: foreach my $key (keys %hostid) {
569: delete $hostid{$key};
570: }
571: foreach my $key (keys %hostdom) {
572: delete $hostdom{$key};
573: }
574: foreach my $key (keys %hostip) {
575: delete $hostip{$key};
576: }
577: }
578: #
579: # Read in the host table from file and distribute it into the various hashes:
580: #
581: # - %hostid - Indexed by IP, the loncapa hostname.
582: # - %hostdom - Indexed by loncapa hostname, the domain.
583: # - %hostip - Indexed by hostid, the Ip address of the host.
584: sub ReadHostTable {
585:
586: open (CONFIG,"$perlvar{'lonTabDir'}/hosts.tab") || die "Can't read host file";
587:
588: while (my $configline=<CONFIG>) {
589: my ($id,$domain,$role,$name,$ip)=split(/:/,$configline);
590: chomp($ip); $ip=~s/\D+$//;
591: $hostid{$ip}=$id;
592: $hostdom{$id}=$domain;
593: $hostip{$id}=$ip;
594: if ($id eq $perlvar{'lonHostID'}) { $thisserver=$name; }
595: }
596: close(CONFIG);
597: }
598: #
599: # Reload the Apache daemon's state.
1.150 foxr 600: # This is done by invoking /home/httpd/perl/apachereload
601: # a setuid perl script that can be root for us to do this job.
1.148 foxr 602: #
603: sub ReloadApache {
1.150 foxr 604: my $execdir = $perlvar{'lonDaemons'};
605: my $script = $execdir."/apachereload";
606: system($script);
1.148 foxr 607: }
608:
609: #
1.144 foxr 610: # Called in response to a USR2 signal.
611: # - Reread hosts.tab
612: # - All children connected to hosts that were removed from hosts.tab
613: # are killed via SIGINT
614: # - All children connected to previously existing hosts are sent SIGUSR1
615: # - Our internal hosts hash is updated to reflect the new contents of
616: # hosts.tab causing connections from hosts added to hosts.tab to
617: # now be honored.
618: #
619: sub UpdateHosts {
1.147 foxr 620: logthis('<font color="blue"> Updating connections </font>');
1.148 foxr 621: #
622: # The %children hash has the set of IP's we currently have children
623: # on. These need to be matched against records in the hosts.tab
624: # Any ip's no longer in the table get killed off they correspond to
625: # either dropped or changed hosts. Note that the re-read of the table
626: # will take care of new and changed hosts as connections come into being.
627:
628:
629: KillHostHashes;
630: ReadHostTable;
631:
632: foreach my $child (keys %children) {
633: my $childip = $children{$child};
634: if(!$hostid{$childip}) {
1.149 foxr 635: logthis('<font color="blue"> UpdateHosts killing child '
636: ." $child for ip $childip </font>");
1.148 foxr 637: kill('INT', $child);
1.149 foxr 638: } else {
639: logthis('<font color="green"> keeping child for ip '
640: ." $childip (pid=$child) </font>");
1.148 foxr 641: }
642: }
643: ReloadApache;
1.144 foxr 644: }
645:
1.148 foxr 646:
1.57 www 647: sub checkchildren {
648: &initnewstatus();
649: &logstatus();
650: &logthis('Going to check on the children');
1.134 albertel 651: my $docdir=$perlvar{'lonDocRoot'};
1.61 harris41 652: foreach (sort keys %children) {
1.57 www 653: sleep 1;
654: unless (kill 'USR1' => $_) {
655: &logthis ('Child '.$_.' is dead');
656: &logstatus($$.' is dead');
657: }
1.61 harris41 658: }
1.63 www 659: sleep 5;
1.113 albertel 660: $SIG{ALRM} = sub { die "timeout" };
661: $SIG{__DIE__} = 'DEFAULT';
1.63 www 662: foreach (sort keys %children) {
663: unless (-e "$docdir/lon-status/londchld/$_.txt") {
1.113 albertel 664: eval {
665: alarm(300);
1.63 www 666: &logthis('Child '.$_.' did not respond');
1.67 albertel 667: kill 9 => $_;
1.131 albertel 668: #$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
669: #$subj="LON: $currenthostid killed lond process $_";
670: #my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null`;
671: #$execdir=$perlvar{'lonDaemons'};
672: #$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_`;
1.113 albertel 673: alarm(0);
674: }
1.63 www 675: }
676: }
1.113 albertel 677: $SIG{ALRM} = 'DEFAULT';
1.152 ! www 678: $SIG{__DIE__} = \&catchcexception;
1.57 www 679: }
680:
1.1 albertel 681: # --------------------------------------------------------------------- Logging
682:
683: sub logthis {
684: my $message=shift;
685: my $execdir=$perlvar{'lonDaemons'};
686: my $fh=IO::File->new(">>$execdir/logs/lond.log");
687: my $now=time;
688: my $local=localtime($now);
1.58 www 689: $lastlog=$local.': '.$message;
1.1 albertel 690: print $fh "$local ($$): $message\n";
691: }
692:
1.77 foxr 693: # ------------------------- Conditional log if $DEBUG true.
694: sub Debug {
695: my $message = shift;
696: if($DEBUG) {
697: &logthis($message);
698: }
699: }
1.57 www 700: # ------------------------------------------------------------------ Log status
701:
702: sub logstatus {
703: my $docdir=$perlvar{'lonDocRoot'};
1.63 www 704: {
1.57 www 705: my $fh=IO::File->new(">>$docdir/lon-status/londstatus.txt");
1.115 albertel 706: print $fh $$."\t".$currenthostid."\t".$status."\t".$lastlog."\n";
1.63 www 707: $fh->close();
708: }
709: {
710: my $fh=IO::File->new(">$docdir/lon-status/londchld/$$.txt");
711: print $fh $status."\n".$lastlog."\n".time;
712: $fh->close();
713: }
1.57 www 714: }
715:
716: sub initnewstatus {
717: my $docdir=$perlvar{'lonDocRoot'};
718: my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt");
719: my $now=time;
720: my $local=localtime($now);
721: print $fh "LOND status $local - parent $$\n\n";
1.64 www 722: opendir(DIR,"$docdir/lon-status/londchld");
1.134 albertel 723: while (my $filename=readdir(DIR)) {
1.64 www 724: unlink("$docdir/lon-status/londchld/$filename");
725: }
726: closedir(DIR);
1.57 www 727: }
728:
729: # -------------------------------------------------------------- Status setting
730:
731: sub status {
732: my $what=shift;
733: my $now=time;
734: my $local=localtime($now);
735: $status=$local.': '.$what;
1.103 www 736: $0='lond: '.$what.' '.$local;
1.57 www 737: }
1.11 www 738:
739: # -------------------------------------------------------- Escape Special Chars
740:
741: sub escape {
742: my $str=shift;
743: $str =~ s/(\W)/"%".unpack('H2',$1)/eg;
744: return $str;
745: }
746:
747: # ----------------------------------------------------- Un-Escape Special Chars
748:
749: sub unescape {
750: my $str=shift;
751: $str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
752: return $str;
753: }
754:
1.1 albertel 755: # ----------------------------------------------------------- Send USR1 to lonc
756:
757: sub reconlonc {
758: my $peerfile=shift;
759: &logthis("Trying to reconnect for $peerfile");
760: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
761: if (my $fh=IO::File->new("$loncfile")) {
762: my $loncpid=<$fh>;
763: chomp($loncpid);
764: if (kill 0 => $loncpid) {
765: &logthis("lonc at pid $loncpid responding, sending USR1");
766: kill USR1 => $loncpid;
767: } else {
1.9 www 768: &logthis(
769: "<font color=red>CRITICAL: "
770: ."lonc at pid $loncpid not responding, giving up</font>");
1.1 albertel 771: }
772: } else {
1.9 www 773: &logthis('<font color=red>CRITICAL: lonc not running, giving up</font>');
1.1 albertel 774: }
775: }
776:
777: # -------------------------------------------------- Non-critical communication
1.11 www 778:
1.1 albertel 779: sub subreply {
780: my ($cmd,$server)=@_;
781: my $peerfile="$perlvar{'lonSockDir'}/$server";
782: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
783: Type => SOCK_STREAM,
784: Timeout => 10)
785: or return "con_lost";
786: print $sclient "$cmd\n";
787: my $answer=<$sclient>;
788: chomp($answer);
789: if (!$answer) { $answer="con_lost"; }
790: return $answer;
791: }
792:
793: sub reply {
794: my ($cmd,$server)=@_;
795: my $answer;
1.115 albertel 796: if ($server ne $currenthostid) {
1.1 albertel 797: $answer=subreply($cmd,$server);
798: if ($answer eq 'con_lost') {
799: $answer=subreply("ping",$server);
800: if ($answer ne $server) {
1.115 albertel 801: &logthis("sub reply: answer != server answer is $answer, server is $server");
1.1 albertel 802: &reconlonc("$perlvar{'lonSockDir'}/$server");
803: }
804: $answer=subreply($cmd,$server);
805: }
806: } else {
807: $answer='self_reply';
808: }
809: return $answer;
810: }
811:
1.13 www 812: # -------------------------------------------------------------- Talk to lonsql
813:
1.12 harris41 814: sub sqlreply {
815: my ($cmd)=@_;
816: my $answer=subsqlreply($cmd);
817: if ($answer eq 'con_lost') { $answer=subsqlreply($cmd); }
818: return $answer;
819: }
820:
821: sub subsqlreply {
822: my ($cmd)=@_;
823: my $unixsock="mysqlsock";
824: my $peerfile="$perlvar{'lonSockDir'}/$unixsock";
825: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
826: Type => SOCK_STREAM,
827: Timeout => 10)
828: or return "con_lost";
829: print $sclient "$cmd\n";
830: my $answer=<$sclient>;
831: chomp($answer);
832: if (!$answer) { $answer="con_lost"; }
833: return $answer;
834: }
835:
1.1 albertel 836: # -------------------------------------------- Return path to profile directory
1.11 www 837:
1.1 albertel 838: sub propath {
839: my ($udom,$uname)=@_;
840: $udom=~s/\W//g;
841: $uname=~s/\W//g;
1.16 www 842: my $subdir=$uname.'__';
1.1 albertel 843: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
844: my $proname="$perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
845: return $proname;
846: }
847:
848: # --------------------------------------- Is this the home server of an author?
1.11 www 849:
1.1 albertel 850: sub ishome {
851: my $author=shift;
852: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
853: my ($udom,$uname)=split(/\//,$author);
854: my $proname=propath($udom,$uname);
855: if (-e $proname) {
856: return 'owner';
857: } else {
858: return 'not_owner';
859: }
860: }
861:
862: # ======================================================= Continue main program
863: # ---------------------------------------------------- Fork once and dissociate
864:
1.134 albertel 865: my $fpid=fork;
1.1 albertel 866: exit if $fpid;
1.29 harris41 867: die "Couldn't fork: $!" unless defined ($fpid);
1.1 albertel 868:
1.29 harris41 869: POSIX::setsid() or die "Can't start new session: $!";
1.1 albertel 870:
871: # ------------------------------------------------------- Write our PID on disk
872:
1.134 albertel 873: my $execdir=$perlvar{'lonDaemons'};
1.1 albertel 874: open (PIDSAVE,">$execdir/logs/lond.pid");
875: print PIDSAVE "$$\n";
876: close(PIDSAVE);
1.9 www 877: &logthis("<font color=red>CRITICAL: ---------- Starting ----------</font>");
1.57 www 878: &status('Starting');
1.1 albertel 879:
1.106 foxr 880:
1.1 albertel 881:
882: # ----------------------------------------------------- Install signal handlers
883:
1.57 www 884:
1.1 albertel 885: $SIG{CHLD} = \&REAPER;
886: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
887: $SIG{HUP} = \&HUPSMAN;
1.57 www 888: $SIG{USR1} = \&checkchildren;
1.144 foxr 889: $SIG{USR2} = \&UpdateHosts;
1.106 foxr 890:
1.148 foxr 891: # Read the host hashes:
892:
893: ReadHostTable;
1.106 foxr 894:
895: # --------------------------------------------------------------
896: # Accept connections. When a connection comes in, it is validated
897: # and if good, a child process is created to process transactions
898: # along the connection.
899:
1.1 albertel 900: while (1) {
1.106 foxr 901: $client = $server->accept() or next;
902: make_new_child($client);
1.1 albertel 903: }
904:
905: sub make_new_child {
906: my $pid;
907: my $cipher;
908: my $sigset;
1.106 foxr 909:
910: $client = shift;
1.1 albertel 911: &logthis("Attempting to start child");
912: # block signal for fork
913: $sigset = POSIX::SigSet->new(SIGINT);
914: sigprocmask(SIG_BLOCK, $sigset)
1.29 harris41 915: or die "Can't block SIGINT for fork: $!\n";
1.134 albertel 916:
1.29 harris41 917: die "fork: $!" unless defined ($pid = fork);
1.148 foxr 918:
919: $client->sockopt(SO_KEEPALIVE, 1); # Enable monitoring of
920: # connection liveness.
921:
922: #
923: # Figure out who we're talking to so we can record the peer in
924: # the pid hash.
925: #
926: my $caller = getpeername($client);
927: my ($port,$iaddr)=unpack_sockaddr_in($caller);
928: $clientip=inet_ntoa($iaddr);
1.1 albertel 929:
930: if ($pid) {
931: # Parent records the child's birth and returns.
932: sigprocmask(SIG_UNBLOCK, $sigset)
1.29 harris41 933: or die "Can't unblock SIGINT for fork: $!\n";
1.148 foxr 934: $children{$pid} = $clientip;
1.1 albertel 935: $children++;
1.57 www 936: &status('Started child '.$pid);
1.1 albertel 937: return;
938: } else {
939: # Child can *not* return from this subroutine.
940: $SIG{INT} = 'DEFAULT'; # make SIGINT kill us as it did before
1.126 albertel 941: $SIG{CHLD} = 'DEFAULT'; #make this default so that pwauth returns
942: #don't get intercepted
1.57 www 943: $SIG{USR1}= \&logstatus;
1.63 www 944: $SIG{ALRM}= \&timeout;
1.57 www 945: $lastlog='Forked ';
946: $status='Forked';
947:
1.1 albertel 948: # unblock signals
949: sigprocmask(SIG_UNBLOCK, $sigset)
1.29 harris41 950: or die "Can't unblock SIGINT for fork: $!\n";
1.13 www 951:
1.134 albertel 952: my $tmpsnum=0;
1.91 albertel 953: #---------------------------------------------------- kerberos 5 initialization
954: &Authen::Krb5::init_context();
955: &Authen::Krb5::init_ets();
956:
1.57 www 957: &status('Accepted connection');
1.1 albertel 958: # =============================================================================
959: # do something with the connection
960: # -----------------------------------------------------------------------------
1.148 foxr 961: # see if we know client and check for spoof IP by challenge
962:
1.1 albertel 963: my $clientrec=($hostid{$clientip} ne undef);
1.9 www 964: &logthis(
1.115 albertel 965: "<font color=yellow>INFO: Connection, $clientip ($hostid{$clientip})</font>"
1.51 www 966: );
1.57 www 967: &status("Connecting $clientip ($hostid{$clientip})");
1.2 www 968: my $clientok;
1.1 albertel 969: if ($clientrec) {
1.57 www 970: &status("Waiting for init from $clientip ($hostid{$clientip})");
1.2 www 971: my $remotereq=<$client>;
1.115 albertel 972: $remotereq=~s/[^\w:]//g;
973: if ($remotereq =~ /^init/) {
1.121 albertel 974: &sethost("sethost:$perlvar{'lonHostID'}");
1.2 www 975: my $challenge="$$".time;
976: print $client "$challenge\n";
1.57 www 977: &status(
978: "Waiting for challenge reply from $clientip ($hostid{$clientip})");
1.2 www 979: $remotereq=<$client>;
980: $remotereq=~s/\W//g;
981: if ($challenge eq $remotereq) {
982: $clientok=1;
983: print $client "ok\n";
984: } else {
1.9 www 985: &logthis(
986: "<font color=blue>WARNING: $clientip did not reply challenge</font>");
1.57 www 987: &status('No challenge reply '.$clientip);
1.2 www 988: }
989: } else {
1.9 www 990: &logthis(
991: "<font color=blue>WARNING: "
992: ."$clientip failed to initialize: >$remotereq< </font>");
1.57 www 993: &status('No init '.$clientip);
1.2 www 994: }
995: } else {
1.9 www 996: &logthis(
997: "<font color=blue>WARNING: Unknown client $clientip</font>");
1.57 www 998: &status('Hung up on '.$clientip);
1.2 www 999: }
1000: if ($clientok) {
1.1 albertel 1001: # ---------------- New known client connecting, could mean machine online again
1.75 foxr 1002:
1.115 albertel 1003: foreach my $id (keys(%hostip)) {
1004: if ($hostip{$id} ne $clientip ||
1005: $hostip{$currenthostid} eq $clientip) {
1006: # no need to try to do recon's to myself
1007: next;
1008: }
1009: &reconlonc("$perlvar{'lonSockDir'}/$id");
1010: }
1011: &logthis("<font color=green>Established connection: $hostid{$clientip}</font>");
1.58 www 1012: &status('Will listen to '.$hostid{$clientip});
1.1 albertel 1013: # ------------------------------------------------------------ Process requests
1014: while (my $userinput=<$client>) {
1015: chomp($userinput);
1.79 foxr 1016: Debug("Request = $userinput\n");
1.57 www 1017: &status('Processing '.$hostid{$clientip}.': '.$userinput);
1.1 albertel 1018: my $wasenc=0;
1.63 www 1019: alarm(120);
1.1 albertel 1020: # ------------------------------------------------------------ See if encrypted
1021: if ($userinput =~ /^enc/) {
1022: if ($cipher) {
1023: my ($cmd,$cmdlength,$encinput)=split(/:/,$userinput);
1024: $userinput='';
1025: for (my $encidx=0;$encidx<length($encinput);$encidx+=16) {
1026: $userinput.=
1027: $cipher->decrypt(
1028: pack("H16",substr($encinput,$encidx,16))
1029: );
1030: }
1031: $userinput=substr($userinput,0,$cmdlength);
1032: $wasenc=1;
1033: }
1.75 foxr 1034: }
1035:
1.1 albertel 1036: # ------------------------------------------------------------- Normal commands
1037: # ------------------------------------------------------------------------ ping
1038: if ($userinput =~ /^ping/) {
1.115 albertel 1039: print $client "$currenthostid\n";
1.1 albertel 1040: # ------------------------------------------------------------------------ pong
1.137 foxr 1041: }elsif ($userinput =~ /^pong/) {
1.134 albertel 1042: my $reply=&reply("ping",$hostid{$clientip});
1.115 albertel 1043: print $client "$currenthostid:$reply\n";
1.1 albertel 1044: # ------------------------------------------------------------------------ ekey
1045: } elsif ($userinput =~ /^ekey/) {
1046: my $buildkey=time.$$.int(rand 100000);
1047: $buildkey=~tr/1-6/A-F/;
1048: $buildkey=int(rand 100000).$buildkey.int(rand 100000);
1.115 albertel 1049: my $key=$currenthostid.$hostid{$clientip};
1.1 albertel 1050: $key=~tr/a-z/A-Z/;
1051: $key=~tr/G-P/0-9/;
1052: $key=~tr/Q-Z/0-9/;
1053: $key=$key.$buildkey.$key.$buildkey.$key.$buildkey;
1054: $key=substr($key,0,32);
1055: my $cipherkey=pack("H32",$key);
1056: $cipher=new IDEA $cipherkey;
1057: print $client "$buildkey\n";
1058: # ------------------------------------------------------------------------ load
1059: } elsif ($userinput =~ /^load/) {
1060: my $loadavg;
1061: {
1062: my $loadfile=IO::File->new('/proc/loadavg');
1063: $loadavg=<$loadfile>;
1064: }
1065: $loadavg =~ s/\s.*//g;
1.127 albertel 1066: my $loadpercent=100*$loadavg/$perlvar{'lonLoadLim'};
1.1 albertel 1067: print $client "$loadpercent\n";
1.127 albertel 1068: # -------------------------------------------------------------------- userload
1069: } elsif ($userinput =~ /^userload/) {
1070: my $userloadpercent=&userload();
1071: print $client "$userloadpercent\n";
1.137 foxr 1072:
1073: #
1074: # Transactions requiring encryption:
1075: #
1.54 harris41 1076: # ----------------------------------------------------------------- currentauth
1077: } elsif ($userinput =~ /^currentauth/) {
1078: if ($wasenc==1) {
1079: my ($cmd,$udom,$uname)=split(/:/,$userinput);
1.79 foxr 1080: my $result = GetAuthType($udom, $uname);
1.78 foxr 1081: if($result eq "nouser") {
1082: print $client "unknown_user\n";
1083: }
1084: else {
1085: print $client "$result\n"
1086: }
1.54 harris41 1087: } else {
1088: print $client "refused\n";
1089: }
1.137 foxr 1090: #--------------------------------------------------------------------- pushfile
1091: } elsif($userinput =~ /^pushfile/) {
1.140 foxr 1092: if($wasenc == 1) {
1093: my $cert = GetCertificate($userinput);
1094: if(ValidManager($cert)) {
1.141 foxr 1095: my $reply = PushFile($userinput);
1096: print $client "$reply\n";
1.140 foxr 1097: } else {
1098: print $client "refused\n";
1099: }
1100: } else {
1101: print $client "refused\n";
1102: }
1.137 foxr 1103: #--------------------------------------------------------------------- reinit
1104: } elsif($userinput =~ /^reinit/) {
1.140 foxr 1105: if ($wasenc == 1) {
1106: my $cert = GetCertificate($userinput);
1107: if(ValidManager($cert)) {
1.146 foxr 1108: chomp($userinput);
1.145 foxr 1109: my $reply = ReinitProcess($userinput);
1110: print $client "$reply\n";
1.140 foxr 1111: } else {
1112: print $client "refused\n";
1113: }
1114: } else {
1115: print $client "refused\n";
1116: }
1.1 albertel 1117: # ------------------------------------------------------------------------ auth
1118: } elsif ($userinput =~ /^auth/) {
1119: if ($wasenc==1) {
1120: my ($cmd,$udom,$uname,$upass)=split(/:/,$userinput);
1121: chomp($upass);
1.11 www 1122: $upass=unescape($upass);
1.1 albertel 1123: my $proname=propath($udom,$uname);
1124: my $passfilename="$proname/passwd";
1125: if (-e $passfilename) {
1126: my $pf = IO::File->new($passfilename);
1127: my $realpasswd=<$pf>;
1128: chomp($realpasswd);
1.2 www 1129: my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
1130: my $pwdcorrect=0;
1131: if ($howpwd eq 'internal') {
1.99 foxr 1132: &Debug("Internal auth");
1.2 www 1133: $pwdcorrect=
1134: (crypt($upass,$contentpwd) eq $contentpwd);
1135: } elsif ($howpwd eq 'unix') {
1.99 foxr 1136: &Debug("Unix auth");
1137: if((getpwnam($uname))[1] eq "") { #no such user!
1138: $pwdcorrect = 0;
1139: } else {
1140: $contentpwd=(getpwnam($uname))[1];
1141: my $pwauth_path="/usr/local/sbin/pwauth";
1142: unless ($contentpwd eq 'x') {
1143: $pwdcorrect=
1144: (crypt($upass,$contentpwd) eq
1145: $contentpwd);
1146: }
1147:
1.52 harris41 1148: elsif (-e $pwauth_path) {
1149: open PWAUTH, "|$pwauth_path" or
1150: die "Cannot invoke authentication";
1151: print PWAUTH "$uname\n$upass\n";
1152: close PWAUTH;
1153: $pwdcorrect=!$?;
1.99 foxr 1154: }
1.52 harris41 1155: }
1.3 www 1156: } elsif ($howpwd eq 'krb4') {
1.134 albertel 1157: my $null=pack("C",0);
1.104 matthew 1158: unless ($upass=~/$null/) {
1159: my $krb4_error = &Authen::Krb4::get_pw_in_tkt
1160: ($uname,"",$contentpwd,'krbtgt',
1161: $contentpwd,1,$upass);
1162: if (!$krb4_error) {
1163: $pwdcorrect = 1;
1164: } else {
1165: $pwdcorrect=0;
1166: # log error if it is not a bad password
1167: if ($krb4_error != 62) {
1168: &logthis('krb4:'.$uname.','.$contentpwd.','.
1169: &Authen::Krb4::get_err_txt($Authen::Krb4::error));
1170: }
1171: }
1172: }
1.91 albertel 1173: } elsif ($howpwd eq 'krb5') {
1.134 albertel 1174: my $null=pack("C",0);
1.91 albertel 1175: unless ($upass=~/$null/) {
1176: my $krbclient=&Authen::Krb5::parse_name($uname.'@'.$contentpwd);
1177: my $krbservice="krbtgt/".$contentpwd."\@".$contentpwd;
1178: my $krbserver=&Authen::Krb5::parse_name($krbservice);
1179: my $credentials=&Authen::Krb5::cc_default();
1180: $credentials->initialize($krbclient);
1181: my $krbreturn =
1182: &Authen::Krb5::get_in_tkt_with_password(
1183: $krbclient,$krbserver,$upass,$credentials);
1.92 albertel 1184: # unless ($krbreturn) {
1185: # &logthis("Krb5 Error: ".
1186: # &Authen::Krb5::error());
1187: # }
1.91 albertel 1188: $pwdcorrect = ($krbreturn == 1);
1189: } else { $pwdcorrect=0; }
1.50 albertel 1190: } elsif ($howpwd eq 'localauth') {
1.49 albertel 1191: $pwdcorrect=&localauth::localauth($uname,$upass,
1192: $contentpwd);
1193: }
1.2 www 1194: if ($pwdcorrect) {
1.1 albertel 1195: print $client "authorized\n";
1196: } else {
1197: print $client "non_authorized\n";
1198: }
1199: } else {
1200: print $client "unknown_user\n";
1201: }
1202: } else {
1203: print $client "refused\n";
1204: }
1205: # ---------------------------------------------------------------------- passwd
1206: } elsif ($userinput =~ /^passwd/) {
1207: if ($wasenc==1) {
1208: my
1209: ($cmd,$udom,$uname,$upass,$npass)=split(/:/,$userinput);
1210: chomp($npass);
1.32 www 1211: $upass=&unescape($upass);
1212: $npass=&unescape($npass);
1.98 foxr 1213: &Debug("Trying to change password for $uname");
1.72 matthew 1214: my $proname=propath($udom,$uname);
1.1 albertel 1215: my $passfilename="$proname/passwd";
1216: if (-e $passfilename) {
1217: my $realpasswd;
1218: { my $pf = IO::File->new($passfilename);
1219: $realpasswd=<$pf>; }
1220: chomp($realpasswd);
1.2 www 1221: my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
1222: if ($howpwd eq 'internal') {
1.98 foxr 1223: &Debug("internal auth");
1.2 www 1224: if (crypt($upass,$contentpwd) eq $contentpwd) {
1225: my $salt=time;
1226: $salt=substr($salt,6,2);
1227: my $ncpass=crypt($npass,$salt);
1.139 albertel 1228: {
1229: my $pf;
1230: if ($pf = IO::File->new(">$passfilename")) {
1231: print $pf "internal:$ncpass\n";
1232: &logthis("Result of password change for $uname: pwchange_success");
1233: print $client "ok\n";
1234: } else {
1235: &logthis("Unable to open $uname passwd to change password");
1236: print $client "non_authorized\n";
1237: }
1238: }
1239:
1.2 www 1240: } else {
1241: print $client "non_authorized\n";
1242: }
1.72 matthew 1243: } elsif ($howpwd eq 'unix') {
1244: # Unix means we have to access /etc/password
1245: # one way or another.
1246: # First: Make sure the current password is
1247: # correct
1.98 foxr 1248: &Debug("auth is unix");
1.72 matthew 1249: $contentpwd=(getpwnam($uname))[1];
1250: my $pwdcorrect = "0";
1251: my $pwauth_path="/usr/local/sbin/pwauth";
1252: unless ($contentpwd eq 'x') {
1253: $pwdcorrect=
1254: (crypt($upass,$contentpwd) eq $contentpwd);
1255: } elsif (-e $pwauth_path) {
1256: open PWAUTH, "|$pwauth_path" or
1257: die "Cannot invoke authentication";
1258: print PWAUTH "$uname\n$upass\n";
1259: close PWAUTH;
1.98 foxr 1260: &Debug("exited pwauth with $? ($uname,$upass) ");
1261: $pwdcorrect=($? == 0);
1.72 matthew 1262: }
1263: if ($pwdcorrect) {
1264: my $execdir=$perlvar{'lonDaemons'};
1.98 foxr 1265: &Debug("Opening lcpasswd pipeline");
1.132 matthew 1266: my $pf = IO::File->new("|$execdir/lcpasswd > $perlvar{'lonDaemons'}/logs/lcpasswd.log");
1.72 matthew 1267: print $pf "$uname\n$npass\n$npass\n";
1268: close $pf;
1.97 foxr 1269: my $err = $?;
1270: my $result = ($err>0 ? 'pwchange_failure'
1.72 matthew 1271: : 'ok');
1.96 foxr 1272: &logthis("Result of password change for $uname: ".
1273: &lcpasswdstrerror($?));
1.72 matthew 1274: print $client "$result\n";
1275: } else {
1276: print $client "non_authorized\n";
1277: }
1278: } else {
1.2 www 1279: print $client "auth_mode_error\n";
1.1 albertel 1280: }
1281: } else {
1282: print $client "unknown_user\n";
1.31 www 1283: }
1284: } else {
1285: print $client "refused\n";
1286: }
1287: # -------------------------------------------------------------------- makeuser
1288: } elsif ($userinput =~ /^makeuser/) {
1.91 albertel 1289: &Debug("Make user received");
1.56 harris41 1290: my $oldumask=umask(0077);
1.31 www 1291: if ($wasenc==1) {
1292: my
1293: ($cmd,$udom,$uname,$umode,$npass)=split(/:/,$userinput);
1.77 foxr 1294: &Debug("cmd =".$cmd." $udom =".$udom.
1295: " uname=".$uname);
1.31 www 1296: chomp($npass);
1.32 www 1297: $npass=&unescape($npass);
1.31 www 1298: my $proname=propath($udom,$uname);
1299: my $passfilename="$proname/passwd";
1.77 foxr 1300: &Debug("Password file created will be:".
1301: $passfilename);
1.31 www 1302: if (-e $passfilename) {
1303: print $client "already_exists\n";
1.115 albertel 1304: } elsif ($udom ne $currentdomainid) {
1.31 www 1305: print $client "not_right_domain\n";
1306: } else {
1.134 albertel 1307: my @fpparts=split(/\//,$proname);
1308: my $fpnow=$fpparts[0].'/'.$fpparts[1].'/'.$fpparts[2];
1309: my $fperror='';
1310: for (my $i=3;$i<=$#fpparts;$i++) {
1.31 www 1311: $fpnow.='/'.$fpparts[$i];
1312: unless (-e $fpnow) {
1313: unless (mkdir($fpnow,0777)) {
1.109 foxr 1314: $fperror="error: ".($!+0)
1.111 matthew 1315: ." mkdir failed while attempting "
1316: ."makeuser\n";
1.31 www 1317: }
1318: }
1319: }
1320: unless ($fperror) {
1.98 foxr 1321: my $result=&make_passwd_file($uname, $umode,$npass,
1.91 albertel 1322: $passfilename);
1323: print $client $result;
1.31 www 1324: } else {
1325: print $client "$fperror\n";
1326: }
1.55 harris41 1327: }
1328: } else {
1329: print $client "refused\n";
1330: }
1.56 harris41 1331: umask($oldumask);
1.55 harris41 1332: # -------------------------------------------------------------- changeuserauth
1333: } elsif ($userinput =~ /^changeuserauth/) {
1.77 foxr 1334: &Debug("Changing authorization");
1335: if ($wasenc==1) {
1.55 harris41 1336: my
1.91 albertel 1337: ($cmd,$udom,$uname,$umode,$npass)=split(/:/,$userinput);
1.55 harris41 1338: chomp($npass);
1.77 foxr 1339: &Debug("cmd = ".$cmd." domain= ".$udom.
1340: "uname =".$uname." umode= ".$umode);
1.55 harris41 1341: $npass=&unescape($npass);
1.91 albertel 1342: my $proname=&propath($udom,$uname);
1.55 harris41 1343: my $passfilename="$proname/passwd";
1.115 albertel 1344: if ($udom ne $currentdomainid) {
1.55 harris41 1345: print $client "not_right_domain\n";
1346: } else {
1.98 foxr 1347: my $result=&make_passwd_file($uname, $umode,$npass,
1.93 albertel 1348: $passfilename);
1.91 albertel 1349: print $client $result;
1.1 albertel 1350: }
1351: } else {
1352: print $client "refused\n";
1353: }
1354: # ------------------------------------------------------------------------ home
1355: } elsif ($userinput =~ /^home/) {
1356: my ($cmd,$udom,$uname)=split(/:/,$userinput);
1357: chomp($uname);
1358: my $proname=propath($udom,$uname);
1359: if (-e $proname) {
1360: print $client "found\n";
1361: } else {
1362: print $client "not_found\n";
1363: }
1364: # ---------------------------------------------------------------------- update
1365: } elsif ($userinput =~ /^update/) {
1366: my ($cmd,$fname)=split(/:/,$userinput);
1367: my $ownership=ishome($fname);
1368: if ($ownership eq 'not_owner') {
1369: if (-e $fname) {
1370: my ($dev,$ino,$mode,$nlink,
1371: $uid,$gid,$rdev,$size,
1372: $atime,$mtime,$ctime,
1373: $blksize,$blocks)=stat($fname);
1.134 albertel 1374: my $now=time;
1375: my $since=$now-$atime;
1.1 albertel 1376: if ($since>$perlvar{'lonExpire'}) {
1.134 albertel 1377: my $reply=
1378: &reply("unsub:$fname","$hostid{$clientip}");
1.1 albertel 1379: unlink("$fname");
1380: } else {
1381: my $transname="$fname.in.transfer";
1382: my $remoteurl=
1383: reply("sub:$fname","$hostid{$clientip}");
1384: my $response;
1385: {
1386: my $ua=new LWP::UserAgent;
1387: my $request=new HTTP::Request('GET',"$remoteurl");
1388: $response=$ua->request($request,$transname);
1389: }
1390: if ($response->is_error()) {
1.24 albertel 1391: unlink($transname);
1.1 albertel 1392: my $message=$response->status_line;
1393: &logthis(
1394: "LWP GET: $message for $fname ($remoteurl)");
1395: } else {
1.14 www 1396: if ($remoteurl!~/\.meta$/) {
1.28 www 1397: my $ua=new LWP::UserAgent;
1.14 www 1398: my $mrequest=
1399: new HTTP::Request('GET',$remoteurl.'.meta');
1400: my $mresponse=
1401: $ua->request($mrequest,$fname.'.meta');
1402: if ($mresponse->is_error()) {
1403: unlink($fname.'.meta');
1404: }
1405: }
1.1 albertel 1406: rename($transname,$fname);
1407: }
1408: }
1409: print $client "ok\n";
1410: } else {
1411: print $client "not_found\n";
1412: }
1413: } else {
1414: print $client "rejected\n";
1415: }
1.85 www 1416: # -------------------------------------- fetch a user file from a remote server
1417: } elsif ($userinput =~ /^fetchuserfile/) {
1.151 albertel 1418: my ($cmd,$fname)=split(/:/,$userinput);
1419: my ($udom,$uname,$ufile)=split(/\//,$fname);
1420: my $udir=propath($udom,$uname).'/userfiles';
1421: unless (-e $udir) { mkdir($udir,0770); }
1.86 www 1422: if (-e $udir) {
1.151 albertel 1423: $ufile=~s/^[\.\~]+//;
1424: $ufile=~s/\///g;
1425: my $destname=$udir.'/'.$ufile;
1426: my $transname=$udir.'/'.$ufile.'.in.transit';
1427: my $remoteurl='http://'.$clientip.'/userfiles/'.$fname;
1428: my $response;
1429: {
1430: my $ua=new LWP::UserAgent;
1431: my $request=new HTTP::Request('GET',"$remoteurl");
1432: $response=$ua->request($request,$transname);
1433: }
1434: if ($response->is_error()) {
1435: unlink($transname);
1436: my $message=$response->status_line;
1437: &logthis("LWP GET: $message for $fname ($remoteurl)");
1438: print $client "failed\n";
1439: } else {
1440: if (!rename($transname,$destname)) {
1441: &logthis("Unable to move $transname to $destname");
1442: unlink($transname);
1443: print $client "failed\n";
1444: } else {
1445: print $client "ok\n";
1446: }
1447: }
1448: } else {
1449: print $client "not_home\n";
1450: }
1.85 www 1451: # ------------------------------------------ authenticate access to a user file
1.86 www 1452: } elsif ($userinput =~ /^tokenauthuserfile/) {
1.85 www 1453: my ($cmd,$fname,$session)=split(/:/,$userinput);
1.86 www 1454: chomp($session);
1.134 albertel 1455: my $reply='non_auth';
1.86 www 1456: if (open(ENVIN,$perlvar{'lonIDsDir'}.'/'.
1.134 albertel 1457: $session.'.id')) {
1458: while (my $line=<ENVIN>) {
1459: if ($line=~/userfile\.$fname\=/) { $reply='ok'; }
1460: }
1461: close(ENVIN);
1462: print $client $reply."\n";
1.86 www 1463: } else {
1.134 albertel 1464: print $client "invalid_token\n";
1.86 www 1465: }
1.1 albertel 1466: # ----------------------------------------------------------------- unsubscribe
1467: } elsif ($userinput =~ /^unsub/) {
1468: my ($cmd,$fname)=split(/:/,$userinput);
1469: if (-e $fname) {
1.84 albertel 1470: print $client &unsub($client,$fname,$clientip);
1.1 albertel 1471: } else {
1472: print $client "not_found\n";
1473: }
1474: # ------------------------------------------------------------------- subscribe
1475: } elsif ($userinput =~ /^sub/) {
1.84 albertel 1476: print $client &subscribe($userinput,$clientip);
1.102 www 1477: # ------------------------------------------------------------- current version
1478: } elsif ($userinput =~ /^currentversion/) {
1479: my ($cmd,$fname)=split(/:/,$userinput);
1480: print $client ¤tversion($fname)."\n";
1.12 harris41 1481: # ------------------------------------------------------------------------- log
1482: } elsif ($userinput =~ /^log/) {
1483: my ($cmd,$udom,$uname,$what)=split(/:/,$userinput);
1484: chomp($what);
1485: my $proname=propath($udom,$uname);
1486: my $now=time;
1487: {
1488: my $hfh;
1489: if ($hfh=IO::File->new(">>$proname/activity.log")) {
1490: print $hfh "$now:$hostid{$clientip}:$what\n";
1491: print $client "ok\n";
1492: } else {
1.109 foxr 1493: print $client "error: ".($!+0)
1.111 matthew 1494: ." IO::File->new Failed "
1495: ."while attempting log\n";
1.12 harris41 1496: }
1497: }
1.1 albertel 1498: # ------------------------------------------------------------------------- put
1499: } elsif ($userinput =~ /^put/) {
1.6 www 1500: my ($cmd,$udom,$uname,$namespace,$what)
1.1 albertel 1501: =split(/:/,$userinput);
1.8 www 1502: $namespace=~s/\//\_/g;
1.6 www 1503: $namespace=~s/\W//g;
1504: if ($namespace ne 'roles') {
1.1 albertel 1505: chomp($what);
1506: my $proname=propath($udom,$uname);
1507: my $now=time;
1.48 www 1508: unless ($namespace=~/^nohist\_/) {
1.1 albertel 1509: my $hfh;
1510: if (
1511: $hfh=IO::File->new(">>$proname/$namespace.hist")
1512: ) { print $hfh "P:$now:$what\n"; }
1513: }
1514: my @pairs=split(/\&/,$what);
1.134 albertel 1515: my %hash;
1516: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT(),0640)) {
1517: foreach my $pair (@pairs) {
1518: my ($key,$value)=split(/=/,$pair);
1.1 albertel 1519: $hash{$key}=$value;
1520: }
1.4 www 1521: if (untie(%hash)) {
1.1 albertel 1522: print $client "ok\n";
1523: } else {
1.109 foxr 1524: print $client "error: ".($!+0)
1.111 matthew 1525: ." untie(GDBM) failed ".
1526: "while attempting put\n";
1.1 albertel 1527: }
1528: } else {
1.109 foxr 1529: print $client "error: ".($!)
1.111 matthew 1530: ." tie(GDBM) Failed ".
1531: "while attempting put\n";
1.1 albertel 1532: }
1.6 www 1533: } else {
1534: print $client "refused\n";
1535: }
1536: # -------------------------------------------------------------------- rolesput
1537: } elsif ($userinput =~ /^rolesput/) {
1.77 foxr 1538: &Debug("rolesput");
1.6 www 1539: if ($wasenc==1) {
1540: my ($cmd,$exedom,$exeuser,$udom,$uname,$what)
1541: =split(/:/,$userinput);
1.77 foxr 1542: &Debug("cmd = ".$cmd." exedom= ".$exedom.
1543: "user = ".$exeuser." udom=".$udom.
1544: "what = ".$what);
1.6 www 1545: my $namespace='roles';
1546: chomp($what);
1547: my $proname=propath($udom,$uname);
1548: my $now=time;
1549: {
1550: my $hfh;
1551: if (
1552: $hfh=IO::File->new(">>$proname/$namespace.hist")
1553: ) {
1554: print $hfh "P:$now:$exedom:$exeuser:$what\n";
1555: }
1556: }
1557: my @pairs=split(/\&/,$what);
1.134 albertel 1558: my %hash;
1559: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT(),0640)) {
1560: foreach my $pair (@pairs) {
1561: my ($key,$value)=split(/=/,$pair);
1.78 foxr 1562: &ManagePermissions($key, $udom, $uname,
1563: &GetAuthType( $udom,
1564: $uname));
1.6 www 1565: $hash{$key}=$value;
1566: }
1567: if (untie(%hash)) {
1568: print $client "ok\n";
1569: } else {
1.109 foxr 1570: print $client "error: ".($!+0)
1.111 matthew 1571: ." untie(GDBM) Failed ".
1572: "while attempting rolesput\n";
1.6 www 1573: }
1574: } else {
1.109 foxr 1575: print $client "error: ".($!+0)
1.111 matthew 1576: ." tie(GDBM) Failed ".
1577: "while attempting rolesput\n";
1.117 www 1578: }
1579: } else {
1580: print $client "refused\n";
1581: }
1582: # -------------------------------------------------------------------- rolesdel
1583: } elsif ($userinput =~ /^rolesdel/) {
1584: &Debug("rolesdel");
1585: if ($wasenc==1) {
1586: my ($cmd,$exedom,$exeuser,$udom,$uname,$what)
1587: =split(/:/,$userinput);
1588: &Debug("cmd = ".$cmd." exedom= ".$exedom.
1589: "user = ".$exeuser." udom=".$udom.
1590: "what = ".$what);
1591: my $namespace='roles';
1592: chomp($what);
1593: my $proname=propath($udom,$uname);
1594: my $now=time;
1595: {
1596: my $hfh;
1597: if (
1598: $hfh=IO::File->new(">>$proname/$namespace.hist")
1599: ) {
1600: print $hfh "D:$now:$exedom:$exeuser:$what\n";
1601: }
1602: }
1603: my @rolekeys=split(/\&/,$what);
1.134 albertel 1604: my %hash;
1605: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT(),0640)) {
1606: foreach my $key (@rolekeys) {
1.117 www 1607: delete $hash{$key};
1608: }
1609: if (untie(%hash)) {
1610: print $client "ok\n";
1611: } else {
1612: print $client "error: ".($!+0)
1613: ." untie(GDBM) Failed ".
1614: "while attempting rolesdel\n";
1615: }
1616: } else {
1617: print $client "error: ".($!+0)
1618: ." tie(GDBM) Failed ".
1619: "while attempting rolesdel\n";
1.6 www 1620: }
1621: } else {
1622: print $client "refused\n";
1623: }
1.1 albertel 1624: # ------------------------------------------------------------------------- get
1625: } elsif ($userinput =~ /^get/) {
1626: my ($cmd,$udom,$uname,$namespace,$what)
1627: =split(/:/,$userinput);
1.8 www 1628: $namespace=~s/\//\_/g;
1.1 albertel 1629: $namespace=~s/\W//g;
1630: chomp($what);
1631: my @queries=split(/\&/,$what);
1632: my $proname=propath($udom,$uname);
1633: my $qresult='';
1.134 albertel 1634: my %hash;
1635: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER(),0640)) {
1636: for (my $i=0;$i<=$#queries;$i++) {
1.1 albertel 1637: $qresult.="$hash{$queries[$i]}&";
1638: }
1.4 www 1639: if (untie(%hash)) {
1.1 albertel 1640: $qresult=~s/\&$//;
1641: print $client "$qresult\n";
1642: } else {
1.109 foxr 1643: print $client "error: ".($!+0)
1.111 matthew 1644: ." untie(GDBM) Failed ".
1645: "while attempting get\n";
1.1 albertel 1646: }
1647: } else {
1.112 matthew 1648: if ($!+0 == 2) {
1649: print $client "error:No such file or ".
1650: "GDBM reported bad block error\n";
1651: } else {
1652: print $client "error: ".($!+0)
1653: ." tie(GDBM) Failed ".
1654: "while attempting get\n";
1655: }
1.1 albertel 1656: }
1657: # ------------------------------------------------------------------------ eget
1658: } elsif ($userinput =~ /^eget/) {
1659: my ($cmd,$udom,$uname,$namespace,$what)
1660: =split(/:/,$userinput);
1.8 www 1661: $namespace=~s/\//\_/g;
1.1 albertel 1662: $namespace=~s/\W//g;
1663: chomp($what);
1664: my @queries=split(/\&/,$what);
1665: my $proname=propath($udom,$uname);
1666: my $qresult='';
1.134 albertel 1667: my %hash;
1668: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER(),0640)) {
1669: for (my $i=0;$i<=$#queries;$i++) {
1.1 albertel 1670: $qresult.="$hash{$queries[$i]}&";
1671: }
1.4 www 1672: if (untie(%hash)) {
1.1 albertel 1673: $qresult=~s/\&$//;
1674: if ($cipher) {
1675: my $cmdlength=length($qresult);
1676: $qresult.=" ";
1677: my $encqresult='';
1678: for
1679: (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
1680: $encqresult.=
1681: unpack("H16",
1682: $cipher->encrypt(substr($qresult,$encidx,8)));
1683: }
1684: print $client "enc:$cmdlength:$encqresult\n";
1685: } else {
1686: print $client "error:no_key\n";
1687: }
1688: } else {
1.109 foxr 1689: print $client "error: ".($!+0)
1.111 matthew 1690: ." untie(GDBM) Failed ".
1691: "while attempting eget\n";
1.1 albertel 1692: }
1693: } else {
1.109 foxr 1694: print $client "error: ".($!+0)
1.111 matthew 1695: ." tie(GDBM) Failed ".
1696: "while attempting eget\n";
1.1 albertel 1697: }
1698: # ------------------------------------------------------------------------- del
1699: } elsif ($userinput =~ /^del/) {
1700: my ($cmd,$udom,$uname,$namespace,$what)
1701: =split(/:/,$userinput);
1.8 www 1702: $namespace=~s/\//\_/g;
1.1 albertel 1703: $namespace=~s/\W//g;
1704: chomp($what);
1705: my $proname=propath($udom,$uname);
1706: my $now=time;
1.48 www 1707: unless ($namespace=~/^nohist\_/) {
1.1 albertel 1708: my $hfh;
1709: if (
1710: $hfh=IO::File->new(">>$proname/$namespace.hist")
1711: ) { print $hfh "D:$now:$what\n"; }
1712: }
1713: my @keys=split(/\&/,$what);
1.134 albertel 1714: my %hash;
1715: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT(),0640)) {
1716: foreach my $key (@keys) {
1.1 albertel 1717: delete($hash{$key});
1718: }
1.4 www 1719: if (untie(%hash)) {
1.1 albertel 1720: print $client "ok\n";
1721: } else {
1.109 foxr 1722: print $client "error: ".($!+0)
1.111 matthew 1723: ." untie(GDBM) Failed ".
1724: "while attempting del\n";
1.1 albertel 1725: }
1726: } else {
1.109 foxr 1727: print $client "error: ".($!+0)
1.111 matthew 1728: ." tie(GDBM) Failed ".
1729: "while attempting del\n";
1.1 albertel 1730: }
1731: # ------------------------------------------------------------------------ keys
1732: } elsif ($userinput =~ /^keys/) {
1733: my ($cmd,$udom,$uname,$namespace)
1734: =split(/:/,$userinput);
1.8 www 1735: $namespace=~s/\//\_/g;
1.1 albertel 1736: $namespace=~s/\W//g;
1737: my $proname=propath($udom,$uname);
1738: my $qresult='';
1.134 albertel 1739: my %hash;
1740: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER(),0640)) {
1741: foreach my $key (keys %hash) {
1.1 albertel 1742: $qresult.="$key&";
1743: }
1.4 www 1744: if (untie(%hash)) {
1.1 albertel 1745: $qresult=~s/\&$//;
1746: print $client "$qresult\n";
1747: } else {
1.109 foxr 1748: print $client "error: ".($!+0)
1.111 matthew 1749: ." untie(GDBM) Failed ".
1750: "while attempting keys\n";
1.105 matthew 1751: }
1752: } else {
1.109 foxr 1753: print $client "error: ".($!+0)
1.111 matthew 1754: ." tie(GDBM) Failed ".
1755: "while attempting keys\n";
1.105 matthew 1756: }
1757: # ----------------------------------------------------------------- dumpcurrent
1.107 matthew 1758: } elsif ($userinput =~ /^currentdump/) {
1.105 matthew 1759: my ($cmd,$udom,$uname,$namespace)
1760: =split(/:/,$userinput);
1761: $namespace=~s/\//\_/g;
1762: $namespace=~s/\W//g;
1763: my $qresult='';
1764: my $proname=propath($udom,$uname);
1.134 albertel 1765: my %hash;
1.105 matthew 1766: if (tie(%hash,'GDBM_File',
1767: "$proname/$namespace.db",
1768: &GDBM_READER(),0640)) {
1769: # Structure of %data:
1770: # $data{$symb}->{$parameter}=$value;
1771: # $data{$symb}->{'v.'.$parameter}=$version;
1772: # since $parameter will be unescaped, we do not
1773: # have to worry about silly parameter names...
1774: my %data = ();
1775: while (my ($key,$value) = each(%hash)) {
1776: my ($v,$symb,$param) = split(/:/,$key);
1777: next if ($v eq 'version' || $symb eq 'keys');
1778: next if (exists($data{$symb}) &&
1779: exists($data{$symb}->{$param}) &&
1780: $data{$symb}->{'v.'.$param} > $v);
1781: $data{$symb}->{$param}=$value;
1.107 matthew 1782: $data{$symb}->{'v.'.$param}=$v;
1.105 matthew 1783: }
1784: if (untie(%hash)) {
1785: while (my ($symb,$param_hash) = each(%data)) {
1786: while(my ($param,$value) = each (%$param_hash)){
1787: next if ($param =~ /^v\./);
1788: $qresult.=$symb.':'.$param.'='.$value.'&';
1789: }
1790: }
1791: chop($qresult);
1792: print $client "$qresult\n";
1793: } else {
1.109 foxr 1794: print $client "error: ".($!+0)
1.111 matthew 1795: ." untie(GDBM) Failed ".
1796: "while attempting currentdump\n";
1.1 albertel 1797: }
1798: } else {
1.109 foxr 1799: print $client "error: ".($!+0)
1.111 matthew 1800: ." tie(GDBM) Failed ".
1801: "while attempting currentdump\n";
1.1 albertel 1802: }
1803: # ------------------------------------------------------------------------ dump
1804: } elsif ($userinput =~ /^dump/) {
1.62 www 1805: my ($cmd,$udom,$uname,$namespace,$regexp)
1.1 albertel 1806: =split(/:/,$userinput);
1.8 www 1807: $namespace=~s/\//\_/g;
1.1 albertel 1808: $namespace=~s/\W//g;
1.62 www 1809: if (defined($regexp)) {
1810: $regexp=&unescape($regexp);
1811: } else {
1812: $regexp='.';
1813: }
1.100 matthew 1814: my $qresult='';
1.1 albertel 1815: my $proname=propath($udom,$uname);
1.134 albertel 1816: my %hash;
1817: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER(),0640)) {
1.90 stredwic 1818: study($regexp);
1.134 albertel 1819: while (my ($key,$value) = each(%hash)) {
1.100 matthew 1820: if ($regexp eq '.') {
1821: $qresult.=$key.'='.$value.'&';
1822: } else {
1823: my $unescapeKey = &unescape($key);
1824: if (eval('$unescapeKey=~/$regexp/')) {
1825: $qresult.="$key=$value&";
1826: }
1827: }
1.7 www 1828: }
1.100 matthew 1829: if (untie(%hash)) {
1830: chop($qresult);
1831: print $client "$qresult\n";
1.7 www 1832: } else {
1.109 foxr 1833: print $client "error: ".($!+0)
1.111 matthew 1834: ." untie(GDBM) Failed ".
1835: "while attempting dump\n";
1.7 www 1836: }
1837: } else {
1.109 foxr 1838: print $client "error: ".($!+0)
1.111 matthew 1839: ." tie(GDBM) Failed ".
1840: "while attempting dump\n";
1.7 www 1841: }
1842: # ----------------------------------------------------------------------- store
1843: } elsif ($userinput =~ /^store/) {
1844: my ($cmd,$udom,$uname,$namespace,$rid,$what)
1845: =split(/:/,$userinput);
1.8 www 1846: $namespace=~s/\//\_/g;
1.7 www 1847: $namespace=~s/\W//g;
1848: if ($namespace ne 'roles') {
1849: chomp($what);
1850: my $proname=propath($udom,$uname);
1851: my $now=time;
1.48 www 1852: unless ($namespace=~/^nohist\_/) {
1.7 www 1853: my $hfh;
1854: if (
1855: $hfh=IO::File->new(">>$proname/$namespace.hist")
1856: ) { print $hfh "P:$now:$rid:$what\n"; }
1857: }
1858: my @pairs=split(/\&/,$what);
1.134 albertel 1859: my %hash;
1860: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT(),0640)) {
1.7 www 1861: my @previouskeys=split(/&/,$hash{"keys:$rid"});
1862: my $key;
1863: $hash{"version:$rid"}++;
1864: my $version=$hash{"version:$rid"};
1865: my $allkeys='';
1.134 albertel 1866: foreach my $pair (@pairs) {
1867: my ($key,$value)=split(/=/,$pair);
1.7 www 1868: $allkeys.=$key.':';
1869: $hash{"$version:$rid:$key"}=$value;
1870: }
1.36 www 1871: $hash{"$version:$rid:timestamp"}=$now;
1872: $allkeys.='timestamp';
1.7 www 1873: $hash{"$version:keys:$rid"}=$allkeys;
1874: if (untie(%hash)) {
1875: print $client "ok\n";
1876: } else {
1.109 foxr 1877: print $client "error: ".($!+0)
1.111 matthew 1878: ." untie(GDBM) Failed ".
1879: "while attempting store\n";
1.7 www 1880: }
1881: } else {
1.109 foxr 1882: print $client "error: ".($!+0)
1.111 matthew 1883: ." tie(GDBM) Failed ".
1884: "while attempting store\n";
1.7 www 1885: }
1886: } else {
1887: print $client "refused\n";
1888: }
1889: # --------------------------------------------------------------------- restore
1890: } elsif ($userinput =~ /^restore/) {
1891: my ($cmd,$udom,$uname,$namespace,$rid)
1892: =split(/:/,$userinput);
1.8 www 1893: $namespace=~s/\//\_/g;
1.7 www 1894: $namespace=~s/\W//g;
1895: chomp($rid);
1896: my $proname=propath($udom,$uname);
1897: my $qresult='';
1.134 albertel 1898: my %hash;
1899: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER(),0640)) {
1.7 www 1900: my $version=$hash{"version:$rid"};
1901: $qresult.="version=$version&";
1902: my $scope;
1903: for ($scope=1;$scope<=$version;$scope++) {
1904: my $vkeys=$hash{"$scope:keys:$rid"};
1905: my @keys=split(/:/,$vkeys);
1906: my $key;
1907: $qresult.="$scope:keys=$vkeys&";
1908: foreach $key (@keys) {
1.21 www 1909: $qresult.="$scope:$key=".$hash{"$scope:$rid:$key"}."&";
1.7 www 1910: }
1.1 albertel 1911: }
1.4 www 1912: if (untie(%hash)) {
1.1 albertel 1913: $qresult=~s/\&$//;
1914: print $client "$qresult\n";
1915: } else {
1.109 foxr 1916: print $client "error: ".($!+0)
1.111 matthew 1917: ." untie(GDBM) Failed ".
1918: "while attempting restore\n";
1.1 albertel 1919: }
1920: } else {
1.109 foxr 1921: print $client "error: ".($!+0)
1.111 matthew 1922: ." tie(GDBM) Failed ".
1923: "while attempting restore\n";
1.1 albertel 1924: }
1.86 www 1925: # -------------------------------------------------------------------- chatsend
1926: } elsif ($userinput =~ /^chatsend/) {
1927: my ($cmd,$cdom,$cnum,$newpost)=split(/\:/,$userinput);
1928: &chatadd($cdom,$cnum,$newpost);
1929: print $client "ok\n";
1930: # -------------------------------------------------------------------- chatretr
1931: } elsif ($userinput =~ /^chatretr/) {
1.122 www 1932: my
1933: ($cmd,$cdom,$cnum,$udom,$uname)=split(/\:/,$userinput);
1.86 www 1934: my $reply='';
1.122 www 1935: foreach (&getchat($cdom,$cnum,$udom,$uname)) {
1.86 www 1936: $reply.=&escape($_).':';
1937: }
1938: $reply=~s/\:$//;
1939: print $client $reply."\n";
1.12 harris41 1940: # ------------------------------------------------------------------- querysend
1941: } elsif ($userinput =~ /^querysend/) {
1.44 harris41 1942: my ($cmd,$query,
1.82 www 1943: $arg1,$arg2,$arg3)=split(/\:/,$userinput);
1.12 harris41 1944: $query=~s/\n*$//g;
1.82 www 1945: print $client "".
1.40 harris41 1946: sqlreply("$hostid{$clientip}\&$query".
1.82 www 1947: "\&$arg1"."\&$arg2"."\&$arg3")."\n";
1.12 harris41 1948: # ------------------------------------------------------------------ queryreply
1949: } elsif ($userinput =~ /^queryreply/) {
1950: my ($cmd,$id,$reply)=split(/:/,$userinput);
1951: my $store;
1.13 www 1952: my $execdir=$perlvar{'lonDaemons'};
1953: if ($store=IO::File->new(">$execdir/tmp/$id")) {
1.43 harris41 1954: $reply=~s/\&/\n/g;
1.12 harris41 1955: print $store $reply;
1956: close $store;
1.46 harris41 1957: my $store2=IO::File->new(">$execdir/tmp/$id.end");
1958: print $store2 "done\n";
1959: close $store2;
1.12 harris41 1960: print $client "ok\n";
1961: }
1962: else {
1.109 foxr 1963: print $client "error: ".($!+0)
1.111 matthew 1964: ." IO::File->new Failed ".
1965: "while attempting queryreply\n";
1.12 harris41 1966: }
1.118 www 1967: # ----------------------------------------------------------------- courseidput
1968: } elsif ($userinput =~ /^courseidput/) {
1969: my ($cmd,$udom,$what)=split(/:/,$userinput);
1970: chomp($what);
1971: $udom=~s/\W//g;
1972: my $proname=
1973: "$perlvar{'lonUsersDir'}/$udom/nohist_courseids";
1974: my $now=time;
1975: my @pairs=split(/\&/,$what);
1.134 albertel 1976: my %hash;
1977: if (tie(%hash,'GDBM_File',"$proname.db",&GDBM_WRCREAT(),0640)) {
1978: foreach my $pair (@pairs) {
1979: my ($key,$value)=split(/=/,$pair);
1.118 www 1980: $hash{$key}=$value.':'.$now;
1981: }
1982: if (untie(%hash)) {
1983: print $client "ok\n";
1984: } else {
1985: print $client "error: ".($!+0)
1986: ." untie(GDBM) Failed ".
1987: "while attempting courseidput\n";
1988: }
1989: } else {
1990: print $client "error: ".($!+0)
1991: ." tie(GDBM) Failed ".
1992: "while attempting courseidput\n";
1993: }
1994: # ---------------------------------------------------------------- courseiddump
1995: } elsif ($userinput =~ /^courseiddump/) {
1996: my ($cmd,$udom,$since,$description)
1997: =split(/:/,$userinput);
1998: if (defined($description)) {
1999: $description=&unescape($description);
2000: } else {
2001: $description='.';
2002: }
2003: unless (defined($since)) { $since=0; }
2004: my $qresult='';
2005: my $proname=
2006: "$perlvar{'lonUsersDir'}/$udom/nohist_courseids";
1.134 albertel 2007: my %hash;
2008: if (tie(%hash,'GDBM_File',"$proname.db",&GDBM_READER(),0640)) {
2009: while (my ($key,$value) = each(%hash)) {
1.118 www 2010: my ($descr,$lasttime)=split(/\:/,$value);
2011: if ($lasttime<$since) { next; }
1.133 www 2012: if ($description eq '.') {
1.118 www 2013: $qresult.=$key.'='.$descr.'&';
2014: } else {
2015: my $unescapeVal = &unescape($descr);
1.120 www 2016: if (eval('$unescapeVal=~/$description/i')) {
1.118 www 2017: $qresult.="$key=$descr&";
2018: }
2019: }
2020: }
2021: if (untie(%hash)) {
2022: chop($qresult);
2023: print $client "$qresult\n";
2024: } else {
2025: print $client "error: ".($!+0)
2026: ." untie(GDBM) Failed ".
2027: "while attempting courseiddump\n";
2028: }
2029: } else {
2030: print $client "error: ".($!+0)
2031: ." tie(GDBM) Failed ".
2032: "while attempting courseiddump\n";
2033: }
1.1 albertel 2034: # ----------------------------------------------------------------------- idput
2035: } elsif ($userinput =~ /^idput/) {
2036: my ($cmd,$udom,$what)=split(/:/,$userinput);
2037: chomp($what);
2038: $udom=~s/\W//g;
2039: my $proname="$perlvar{'lonUsersDir'}/$udom/ids";
2040: my $now=time;
2041: {
2042: my $hfh;
2043: if (
2044: $hfh=IO::File->new(">>$proname.hist")
2045: ) { print $hfh "P:$now:$what\n"; }
2046: }
2047: my @pairs=split(/\&/,$what);
1.134 albertel 2048: my %hash;
2049: if (tie(%hash,'GDBM_File',"$proname.db",&GDBM_WRCREAT(),0640)) {
2050: foreach my $pair (@pairs) {
2051: my ($key,$value)=split(/=/,$pair);
1.1 albertel 2052: $hash{$key}=$value;
2053: }
1.4 www 2054: if (untie(%hash)) {
1.1 albertel 2055: print $client "ok\n";
2056: } else {
1.109 foxr 2057: print $client "error: ".($!+0)
1.111 matthew 2058: ." untie(GDBM) Failed ".
2059: "while attempting idput\n";
1.1 albertel 2060: }
2061: } else {
1.109 foxr 2062: print $client "error: ".($!+0)
1.111 matthew 2063: ." tie(GDBM) Failed ".
2064: "while attempting idput\n";
1.1 albertel 2065: }
2066: # ----------------------------------------------------------------------- idget
2067: } elsif ($userinput =~ /^idget/) {
2068: my ($cmd,$udom,$what)=split(/:/,$userinput);
2069: chomp($what);
2070: $udom=~s/\W//g;
2071: my $proname="$perlvar{'lonUsersDir'}/$udom/ids";
2072: my @queries=split(/\&/,$what);
2073: my $qresult='';
1.134 albertel 2074: my %hash;
2075: if (tie(%hash,'GDBM_File',"$proname.db",&GDBM_READER(),0640)) {
2076: for (my $i=0;$i<=$#queries;$i++) {
1.1 albertel 2077: $qresult.="$hash{$queries[$i]}&";
2078: }
1.4 www 2079: if (untie(%hash)) {
1.134 albertel 2080: $qresult=~s/\&$//;
2081: print $client "$qresult\n";
1.1 albertel 2082: } else {
1.134 albertel 2083: print $client "error: ".($!+0)
2084: ." untie(GDBM) Failed ".
2085: "while attempting idget\n";
1.1 albertel 2086: }
2087: } else {
1.109 foxr 2088: print $client "error: ".($!+0)
1.111 matthew 2089: ." tie(GDBM) Failed ".
2090: "while attempting idget\n";
1.1 albertel 2091: }
1.13 www 2092: # ---------------------------------------------------------------------- tmpput
2093: } elsif ($userinput =~ /^tmpput/) {
2094: my ($cmd,$what)=split(/:/,$userinput);
2095: my $store;
2096: $tmpsnum++;
2097: my $id=$$.'_'.$clientip.'_'.$tmpsnum;
2098: $id=~s/\W/\_/g;
2099: $what=~s/\n//g;
2100: my $execdir=$perlvar{'lonDaemons'};
2101: if ($store=IO::File->new(">$execdir/tmp/$id.tmp")) {
2102: print $store $what;
2103: close $store;
2104: print $client "$id\n";
2105: }
2106: else {
1.109 foxr 2107: print $client "error: ".($!+0)
1.111 matthew 2108: ."IO::File->new Failed ".
2109: "while attempting tmpput\n";
1.13 www 2110: }
2111:
2112: # ---------------------------------------------------------------------- tmpget
2113: } elsif ($userinput =~ /^tmpget/) {
2114: my ($cmd,$id)=split(/:/,$userinput);
2115: chomp($id);
2116: $id=~s/\W/\_/g;
2117: my $store;
2118: my $execdir=$perlvar{'lonDaemons'};
2119: if ($store=IO::File->new("$execdir/tmp/$id.tmp")) {
2120: my $reply=<$store>;
2121: print $client "$reply\n";
2122: close $store;
2123: }
2124: else {
1.109 foxr 2125: print $client "error: ".($!+0)
1.111 matthew 2126: ."IO::File->new Failed ".
2127: "while attempting tmpget\n";
1.13 www 2128: }
2129:
1.110 www 2130: # ---------------------------------------------------------------------- tmpdel
2131: } elsif ($userinput =~ /^tmpdel/) {
2132: my ($cmd,$id)=split(/:/,$userinput);
2133: chomp($id);
2134: $id=~s/\W/\_/g;
2135: my $execdir=$perlvar{'lonDaemons'};
2136: if (unlink("$execdir/tmp/$id.tmp")) {
2137: print $client "ok\n";
2138: } else {
2139: print $client "error: ".($!+0)
1.111 matthew 2140: ."Unlink tmp Failed ".
2141: "while attempting tmpdel\n";
1.110 www 2142: }
1.5 www 2143: # -------------------------------------------------------------------------- ls
2144: } elsif ($userinput =~ /^ls/) {
2145: my ($cmd,$ulsdir)=split(/:/,$userinput);
2146: my $ulsout='';
2147: my $ulsfn;
2148: if (-e $ulsdir) {
1.83 stredwic 2149: if(-d $ulsdir) {
2150: if (opendir(LSDIR,$ulsdir)) {
2151: while ($ulsfn=readdir(LSDIR)) {
2152: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
2153: $ulsout.=$ulsfn.'&'.
2154: join('&',@ulsstats).':';
2155: }
2156: closedir(LSDIR);
2157: }
2158: } else {
2159: my @ulsstats=stat($ulsdir);
2160: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
2161: }
2162: } else {
1.5 www 2163: $ulsout='no_such_dir';
2164: }
1.17 www 2165: if ($ulsout eq '') { $ulsout='empty'; }
1.5 www 2166: print $client "$ulsout\n";
1.136 www 2167: # ----------------------------------------------------------------- setannounce
2168: } elsif ($userinput =~ /^setannounce/) {
2169: my ($cmd,$announcement)=split(/:/,$userinput);
2170: chomp($announcement);
2171: $announcement=&unescape($announcement);
2172: if (my $store=IO::File->new('>'.$perlvar{'lonDocRoot'}.
2173: '/announcement.txt')) {
2174: print $store $announcement;
2175: close $store;
2176: print $client "ok\n";
2177: } else {
2178: print $client "error: ".($!+0)."\n";
2179: }
1.51 www 2180: # ------------------------------------------------------------------ Hanging up
2181: } elsif (($userinput =~ /^exit/) ||
2182: ($userinput =~ /^init/)) {
2183: &logthis(
2184: "Client $clientip ($hostid{$clientip}) hanging up: $userinput");
2185: print $client "bye\n";
1.59 www 2186: $client->close();
1.51 www 2187: last;
1.1 albertel 2188: # ------------------------------------------------------------- unknown command
1.121 albertel 2189: } elsif ($userinput =~ /^sethost:/) {
2190: print $client &sethost($userinput)."\n";
2191: } elsif ($userinput =~/^version:/) {
2192: print $client &version($userinput)."\n";
1.1 albertel 2193: } else {
2194: # unknown command
2195: print $client "unknown_cmd\n";
2196: }
1.58 www 2197: # -------------------------------------------------------------------- complete
1.63 www 2198: alarm(0);
1.58 www 2199: &status('Listening to '.$hostid{$clientip});
2200: }
1.59 www 2201: # --------------------------------------------- client unknown or fishy, refuse
1.1 albertel 2202: } else {
2203: print $client "refused\n";
1.59 www 2204: $client->close();
1.9 www 2205: &logthis("<font color=blue>WARNING: "
2206: ."Rejected client $clientip, closing connection</font>");
1.75 foxr 2207: }
1.106 foxr 2208: }
1.75 foxr 2209:
1.1 albertel 2210: # =============================================================================
1.75 foxr 2211:
2212: &logthis("<font color=red>CRITICAL: "
2213: ."Disconnect from $clientip ($hostid{$clientip})</font>");
1.106 foxr 2214:
1.59 www 2215:
1.1 albertel 2216: # this exit is VERY important, otherwise the child will become
2217: # a producer of more and more children, forking yourself into
2218: # process death.
2219: exit;
1.106 foxr 2220:
1.78 foxr 2221: }
2222:
2223:
2224: #
2225: # Checks to see if the input roleput request was to set
2226: # an author role. If so, invokes the lchtmldir script to set
2227: # up a correct public_html
2228: # Parameters:
2229: # request - The request sent to the rolesput subchunk.
2230: # We're looking for /domain/_au
2231: # domain - The domain in which the user is having roles doctored.
2232: # user - Name of the user for which the role is being put.
2233: # authtype - The authentication type associated with the user.
2234: #
2235: sub ManagePermissions
2236: {
2237: my $request = shift;
2238: my $domain = shift;
2239: my $user = shift;
2240: my $authtype= shift;
2241:
2242: # See if the request is of the form /$domain/_au
1.134 albertel 2243: &logthis("ruequest is $request");
1.78 foxr 2244: if($request =~ /^(\/$domain\/_au)$/) { # It's an author rolesput...
2245: my $execdir = $perlvar{'lonDaemons'};
2246: my $userhome= "/home/$user" ;
1.134 albertel 2247: &logthis("system $execdir/lchtmldir $userhome $user $authtype");
1.78 foxr 2248: system("$execdir/lchtmldir $userhome $user $authtype");
2249: }
2250: }
2251: #
2252: # GetAuthType - Determines the authorization type of a user in a domain.
2253:
2254: # Returns the authorization type or nouser if there is no such user.
2255: #
2256: sub GetAuthType
2257: {
2258: my $domain = shift;
2259: my $user = shift;
2260:
1.79 foxr 2261: Debug("GetAuthType( $domain, $user ) \n");
1.78 foxr 2262: my $proname = &propath($domain, $user);
2263: my $passwdfile = "$proname/passwd";
2264: if( -e $passwdfile ) {
2265: my $pf = IO::File->new($passwdfile);
2266: my $realpassword = <$pf>;
2267: chomp($realpassword);
1.79 foxr 2268: Debug("Password info = $realpassword\n");
1.78 foxr 2269: my ($authtype, $contentpwd) = split(/:/, $realpassword);
1.79 foxr 2270: Debug("Authtype = $authtype, content = $contentpwd\n");
1.78 foxr 2271: my $availinfo = '';
1.91 albertel 2272: if($authtype eq 'krb4' or $authtype eq 'krb5') {
1.78 foxr 2273: $availinfo = $contentpwd;
2274: }
1.79 foxr 2275:
1.78 foxr 2276: return "$authtype:$availinfo";
2277: }
2278: else {
1.79 foxr 2279: Debug("Returning nouser");
1.78 foxr 2280: return "nouser";
2281: }
1.1 albertel 2282: }
2283:
1.84 albertel 2284: sub addline {
2285: my ($fname,$hostid,$ip,$newline)=@_;
2286: my $contents;
2287: my $found=0;
2288: my $expr='^'.$hostid.':'.$ip.':';
2289: $expr =~ s/\./\\\./g;
1.134 albertel 2290: my $sh;
1.84 albertel 2291: if ($sh=IO::File->new("$fname.subscription")) {
2292: while (my $subline=<$sh>) {
2293: if ($subline !~ /$expr/) {$contents.= $subline;} else {$found=1;}
2294: }
2295: $sh->close();
2296: }
2297: $sh=IO::File->new(">$fname.subscription");
2298: if ($contents) { print $sh $contents; }
2299: if ($newline) { print $sh $newline; }
2300: $sh->close();
2301: return $found;
1.86 www 2302: }
2303:
2304: sub getchat {
1.122 www 2305: my ($cdom,$cname,$udom,$uname)=@_;
1.87 www 2306: my %hash;
2307: my $proname=&propath($cdom,$cname);
2308: my @entries=();
1.88 albertel 2309: if (tie(%hash,'GDBM_File',"$proname/nohist_chatroom.db",
2310: &GDBM_READER(),0640)) {
2311: @entries=map { $_.':'.$hash{$_} } sort keys %hash;
2312: untie %hash;
1.123 www 2313: }
1.124 www 2314: my @participants=();
1.134 albertel 2315: my $cutoff=time-60;
1.123 www 2316: if (tie(%hash,'GDBM_File',"$proname/nohist_inchatroom.db",
1.124 www 2317: &GDBM_WRCREAT(),0640)) {
2318: $hash{$uname.':'.$udom}=time;
1.123 www 2319: foreach (sort keys %hash) {
2320: if ($hash{$_}>$cutoff) {
1.124 www 2321: $participants[$#participants+1]='active_participant:'.$_;
1.123 www 2322: }
2323: }
2324: untie %hash;
1.86 www 2325: }
1.124 www 2326: return (@participants,@entries);
1.86 www 2327: }
2328:
2329: sub chatadd {
1.88 albertel 2330: my ($cdom,$cname,$newchat)=@_;
2331: my %hash;
2332: my $proname=&propath($cdom,$cname);
2333: my @entries=();
1.142 www 2334: my $time=time;
1.88 albertel 2335: if (tie(%hash,'GDBM_File',"$proname/nohist_chatroom.db",
2336: &GDBM_WRCREAT(),0640)) {
2337: @entries=map { $_.':'.$hash{$_} } sort keys %hash;
2338: my ($lastid)=($entries[$#entries]=~/^(\w+)\:/);
2339: my ($thentime,$idnum)=split(/\_/,$lastid);
2340: my $newid=$time.'_000000';
2341: if ($thentime==$time) {
2342: $idnum=~s/^0+//;
2343: $idnum++;
2344: $idnum=substr('000000'.$idnum,-6,6);
2345: $newid=$time.'_'.$idnum;
2346: }
2347: $hash{$newid}=$newchat;
2348: my $expired=$time-3600;
2349: foreach (keys %hash) {
2350: my ($thistime)=($_=~/(\d+)\_/);
2351: if ($thistime<$expired) {
1.89 www 2352: delete $hash{$_};
1.88 albertel 2353: }
2354: }
2355: untie %hash;
1.142 www 2356: }
2357: {
2358: my $hfh;
2359: if ($hfh=IO::File->new(">>$proname/chatroom.log")) {
2360: print $hfh "$time:".&unescape($newchat)."\n";
2361: }
1.86 www 2362: }
1.84 albertel 2363: }
2364:
2365: sub unsub {
2366: my ($fname,$clientip)=@_;
2367: my $result;
2368: if (unlink("$fname.$hostid{$clientip}")) {
2369: $result="ok\n";
2370: } else {
2371: $result="not_subscribed\n";
2372: }
2373: if (-e "$fname.subscription") {
2374: my $found=&addline($fname,$hostid{$clientip},$clientip,'');
2375: if ($found) { $result="ok\n"; }
2376: } else {
2377: if ($result != "ok\n") { $result="not_subscribed\n"; }
2378: }
2379: return $result;
2380: }
2381:
1.101 www 2382: sub currentversion {
2383: my $fname=shift;
2384: my $version=-1;
2385: my $ulsdir='';
2386: if ($fname=~/^(.+)\/[^\/]+$/) {
2387: $ulsdir=$1;
2388: }
1.114 albertel 2389: my ($fnamere1,$fnamere2);
2390: # remove version if already specified
1.101 www 2391: $fname=~s/\.\d+\.(\w+(?:\.meta)*)$/\.$1/;
1.114 albertel 2392: # get the bits that go before and after the version number
2393: if ( $fname=~/^(.*\.)(\w+(?:\.meta)*)$/ ) {
2394: $fnamere1=$1;
2395: $fnamere2='.'.$2;
2396: }
1.101 www 2397: if (-e $fname) { $version=1; }
2398: if (-e $ulsdir) {
1.134 albertel 2399: if(-d $ulsdir) {
2400: if (opendir(LSDIR,$ulsdir)) {
2401: my $ulsfn;
2402: while ($ulsfn=readdir(LSDIR)) {
1.101 www 2403: # see if this is a regular file (ignore links produced earlier)
1.134 albertel 2404: my $thisfile=$ulsdir.'/'.$ulsfn;
2405: unless (-l $thisfile) {
2406: if ($thisfile=~/\Q$fnamere1\E(\d+)\Q$fnamere2\E/) {
2407: if ($1>$version) { $version=$1; }
2408: }
2409: }
2410: }
2411: closedir(LSDIR);
2412: $version++;
2413: }
2414: }
2415: }
2416: return $version;
1.101 www 2417: }
2418:
2419: sub thisversion {
2420: my $fname=shift;
2421: my $version=-1;
2422: if ($fname=~/\.(\d+)\.\w+(?:\.meta)*$/) {
2423: $version=$1;
2424: }
2425: return $version;
2426: }
2427:
1.84 albertel 2428: sub subscribe {
2429: my ($userinput,$clientip)=@_;
2430: my $result;
2431: my ($cmd,$fname)=split(/:/,$userinput);
2432: my $ownership=&ishome($fname);
2433: if ($ownership eq 'owner') {
1.101 www 2434: # explitly asking for the current version?
2435: unless (-e $fname) {
2436: my $currentversion=¤tversion($fname);
2437: if (&thisversion($fname)==$currentversion) {
2438: if ($fname=~/^(.+)\.\d+\.(\w+(?:\.meta)*)$/) {
2439: my $root=$1;
2440: my $extension=$2;
2441: symlink($root.'.'.$extension,
2442: $root.'.'.$currentversion.'.'.$extension);
1.102 www 2443: unless ($extension=~/\.meta$/) {
2444: symlink($root.'.'.$extension.'.meta',
2445: $root.'.'.$currentversion.'.'.$extension.'.meta');
2446: }
1.101 www 2447: }
2448: }
2449: }
1.84 albertel 2450: if (-e $fname) {
2451: if (-d $fname) {
2452: $result="directory\n";
2453: } else {
2454: if (-e "$fname.$hostid{$clientip}") {&unsub($fname,$clientip);}
1.134 albertel 2455: my $now=time;
1.84 albertel 2456: my $found=&addline($fname,$hostid{$clientip},$clientip,
2457: "$hostid{$clientip}:$clientip:$now\n");
2458: if ($found) { $result="$fname\n"; }
2459: # if they were subscribed to only meta data, delete that
2460: # subscription, when you subscribe to a file you also get
2461: # the metadata
2462: unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); }
2463: $fname=~s/\/home\/httpd\/html\/res/raw/;
2464: $fname="http://$thisserver/".$fname;
2465: $result="$fname\n";
2466: }
2467: } else {
2468: $result="not_found\n";
2469: }
2470: } else {
2471: $result="rejected\n";
2472: }
2473: return $result;
2474: }
1.91 albertel 2475:
2476: sub make_passwd_file {
1.98 foxr 2477: my ($uname, $umode,$npass,$passfilename)=@_;
1.91 albertel 2478: my $result="ok\n";
2479: if ($umode eq 'krb4' or $umode eq 'krb5') {
2480: {
2481: my $pf = IO::File->new(">$passfilename");
2482: print $pf "$umode:$npass\n";
2483: }
2484: } elsif ($umode eq 'internal') {
2485: my $salt=time;
2486: $salt=substr($salt,6,2);
2487: my $ncpass=crypt($npass,$salt);
2488: {
2489: &Debug("Creating internal auth");
2490: my $pf = IO::File->new(">$passfilename");
2491: print $pf "internal:$ncpass\n";
2492: }
2493: } elsif ($umode eq 'localauth') {
2494: {
2495: my $pf = IO::File->new(">$passfilename");
2496: print $pf "localauth:$npass\n";
2497: }
2498: } elsif ($umode eq 'unix') {
2499: {
2500: my $execpath="$perlvar{'lonDaemons'}/"."lcuseradd";
2501: {
2502: &Debug("Executing external: ".$execpath);
1.98 foxr 2503: &Debug("user = ".$uname.", Password =". $npass);
1.132 matthew 2504: my $se = IO::File->new("|$execpath > $perlvar{'lonDaemons'}/logs/lcuseradd.log");
1.91 albertel 2505: print $se "$uname\n";
2506: print $se "$npass\n";
2507: print $se "$npass\n";
1.97 foxr 2508: }
2509: my $useraddok = $?;
2510: if($useraddok > 0) {
2511: &logthis("Failed lcuseradd: ".&lcuseraddstrerror($useraddok));
1.91 albertel 2512: }
2513: my $pf = IO::File->new(">$passfilename");
2514: print $pf "unix:\n";
2515: }
2516: } elsif ($umode eq 'none') {
2517: {
2518: my $pf = IO::File->new(">$passfilename");
2519: print $pf "none:\n";
2520: }
2521: } else {
2522: $result="auth_mode_error\n";
2523: }
2524: return $result;
1.121 albertel 2525: }
2526:
2527: sub sethost {
2528: my ($remotereq) = @_;
2529: my (undef,$hostid)=split(/:/,$remotereq);
2530: if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; }
2531: if ($hostip{$perlvar{'lonHostID'}} eq $hostip{$hostid}) {
2532: $currenthostid=$hostid;
2533: $currentdomainid=$hostdom{$hostid};
2534: &logthis("Setting hostid to $hostid, and domain to $currentdomainid");
2535: } else {
2536: &logthis("Requested host id $hostid not an alias of ".
2537: $perlvar{'lonHostID'}." refusing connection");
2538: return 'unable_to_set';
2539: }
2540: return 'ok';
2541: }
2542:
2543: sub version {
2544: my ($userinput)=@_;
2545: $remoteVERSION=(split(/:/,$userinput))[1];
2546: return "version:$VERSION";
1.127 albertel 2547: }
2548:
1.128 albertel 2549: #There is a copy of this in lonnet.pm
1.127 albertel 2550: sub userload {
2551: my $numusers=0;
2552: {
2553: opendir(LONIDS,$perlvar{'lonIDsDir'});
2554: my $filename;
2555: my $curtime=time;
2556: while ($filename=readdir(LONIDS)) {
2557: if ($filename eq '.' || $filename eq '..') {next;}
1.138 albertel 2558: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
2559: if ($curtime-$mtime < 3600) { $numusers++; }
1.127 albertel 2560: }
2561: closedir(LONIDS);
2562: }
2563: my $userloadpercent=0;
2564: my $maxuserload=$perlvar{'lonUserLoadLim'};
2565: if ($maxuserload) {
1.129 albertel 2566: $userloadpercent=100*$numusers/$maxuserload;
1.127 albertel 2567: }
1.130 albertel 2568: $userloadpercent=sprintf("%.2f",$userloadpercent);
1.127 albertel 2569: return $userloadpercent;
1.91 albertel 2570: }
2571:
1.61 harris41 2572: # ----------------------------------- POD (plain old documentation, CPAN style)
2573:
2574: =head1 NAME
2575:
2576: lond - "LON Daemon" Server (port "LOND" 5663)
2577:
2578: =head1 SYNOPSIS
2579:
1.74 harris41 2580: Usage: B<lond>
2581:
2582: Should only be run as user=www. This is a command-line script which
2583: is invoked by B<loncron>. There is no expectation that a typical user
2584: will manually start B<lond> from the command-line. (In other words,
2585: DO NOT START B<lond> YOURSELF.)
1.61 harris41 2586:
2587: =head1 DESCRIPTION
2588:
1.74 harris41 2589: There are two characteristics associated with the running of B<lond>,
2590: PROCESS MANAGEMENT (starting, stopping, handling child processes)
2591: and SERVER-SIDE ACTIVITIES (password authentication, user creation,
2592: subscriptions, etc). These are described in two large
2593: sections below.
2594:
2595: B<PROCESS MANAGEMENT>
2596:
1.61 harris41 2597: Preforker - server who forks first. Runs as a daemon. HUPs.
2598: Uses IDEA encryption
2599:
1.74 harris41 2600: B<lond> forks off children processes that correspond to the other servers
2601: in the network. Management of these processes can be done at the
2602: parent process level or the child process level.
2603:
2604: B<logs/lond.log> is the location of log messages.
2605:
2606: The process management is now explained in terms of linux shell commands,
2607: subroutines internal to this code, and signal assignments:
2608:
2609: =over 4
2610:
2611: =item *
2612:
2613: PID is stored in B<logs/lond.pid>
2614:
2615: This is the process id number of the parent B<lond> process.
2616:
2617: =item *
2618:
2619: SIGTERM and SIGINT
2620:
2621: Parent signal assignment:
2622: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
2623:
2624: Child signal assignment:
2625: $SIG{INT} = 'DEFAULT'; (and SIGTERM is DEFAULT also)
2626: (The child dies and a SIGALRM is sent to parent, awaking parent from slumber
2627: to restart a new child.)
2628:
2629: Command-line invocations:
2630: B<kill> B<-s> SIGTERM I<PID>
2631: B<kill> B<-s> SIGINT I<PID>
2632:
2633: Subroutine B<HUNTSMAN>:
2634: This is only invoked for the B<lond> parent I<PID>.
2635: This kills all the children, and then the parent.
2636: The B<lonc.pid> file is cleared.
2637:
2638: =item *
2639:
2640: SIGHUP
2641:
2642: Current bug:
2643: This signal can only be processed the first time
2644: on the parent process. Subsequent SIGHUP signals
2645: have no effect.
2646:
2647: Parent signal assignment:
2648: $SIG{HUP} = \&HUPSMAN;
2649:
2650: Child signal assignment:
2651: none (nothing happens)
2652:
2653: Command-line invocations:
2654: B<kill> B<-s> SIGHUP I<PID>
2655:
2656: Subroutine B<HUPSMAN>:
2657: This is only invoked for the B<lond> parent I<PID>,
2658: This kills all the children, and then the parent.
2659: The B<lond.pid> file is cleared.
2660:
2661: =item *
2662:
2663: SIGUSR1
2664:
2665: Parent signal assignment:
2666: $SIG{USR1} = \&USRMAN;
2667:
2668: Child signal assignment:
2669: $SIG{USR1}= \&logstatus;
2670:
2671: Command-line invocations:
2672: B<kill> B<-s> SIGUSR1 I<PID>
2673:
2674: Subroutine B<USRMAN>:
2675: When invoked for the B<lond> parent I<PID>,
2676: SIGUSR1 is sent to all the children, and the status of
2677: each connection is logged.
1.144 foxr 2678:
2679: =item *
2680:
2681: SIGUSR2
2682:
2683: Parent Signal assignment:
2684: $SIG{USR2} = \&UpdateHosts
2685:
2686: Child signal assignment:
2687: NONE
2688:
1.74 harris41 2689:
2690: =item *
2691:
2692: SIGCHLD
2693:
2694: Parent signal assignment:
2695: $SIG{CHLD} = \&REAPER;
2696:
2697: Child signal assignment:
2698: none
2699:
2700: Command-line invocations:
2701: B<kill> B<-s> SIGCHLD I<PID>
2702:
2703: Subroutine B<REAPER>:
2704: This is only invoked for the B<lond> parent I<PID>.
2705: Information pertaining to the child is removed.
2706: The socket port is cleaned up.
2707:
2708: =back
2709:
2710: B<SERVER-SIDE ACTIVITIES>
2711:
2712: Server-side information can be accepted in an encrypted or non-encrypted
2713: method.
2714:
2715: =over 4
2716:
2717: =item ping
2718:
2719: Query a client in the hosts.tab table; "Are you there?"
2720:
2721: =item pong
2722:
2723: Respond to a ping query.
2724:
2725: =item ekey
2726:
2727: Read in encrypted key, make cipher. Respond with a buildkey.
2728:
2729: =item load
2730:
2731: Respond with CPU load based on a computation upon /proc/loadavg.
2732:
2733: =item currentauth
2734:
2735: Reply with current authentication information (only over an
2736: encrypted channel).
2737:
2738: =item auth
2739:
2740: Only over an encrypted channel, reply as to whether a user's
2741: authentication information can be validated.
2742:
2743: =item passwd
2744:
2745: Allow for a password to be set.
2746:
2747: =item makeuser
2748:
2749: Make a user.
2750:
2751: =item passwd
2752:
2753: Allow for authentication mechanism and password to be changed.
2754:
2755: =item home
1.61 harris41 2756:
1.74 harris41 2757: Respond to a question "are you the home for a given user?"
2758:
2759: =item update
2760:
2761: Update contents of a subscribed resource.
2762:
2763: =item unsubscribe
2764:
2765: The server is unsubscribing from a resource.
2766:
2767: =item subscribe
2768:
2769: The server is subscribing to a resource.
2770:
2771: =item log
2772:
2773: Place in B<logs/lond.log>
2774:
2775: =item put
2776:
2777: stores hash in namespace
2778:
2779: =item rolesput
2780:
2781: put a role into a user's environment
2782:
2783: =item get
2784:
2785: returns hash with keys from array
2786: reference filled in from namespace
2787:
2788: =item eget
2789:
2790: returns hash with keys from array
2791: reference filled in from namesp (encrypts the return communication)
2792:
2793: =item rolesget
2794:
2795: get a role from a user's environment
2796:
2797: =item del
2798:
2799: deletes keys out of array from namespace
2800:
2801: =item keys
2802:
2803: returns namespace keys
2804:
2805: =item dump
2806:
2807: dumps the complete (or key matching regexp) namespace into a hash
2808:
2809: =item store
2810:
2811: stores hash permanently
2812: for this url; hashref needs to be given and should be a \%hashname; the
2813: remaining args aren't required and if they aren't passed or are '' they will
2814: be derived from the ENV
2815:
2816: =item restore
2817:
2818: returns a hash for a given url
2819:
2820: =item querysend
2821:
2822: Tells client about the lonsql process that has been launched in response
2823: to a sent query.
2824:
2825: =item queryreply
2826:
2827: Accept information from lonsql and make appropriate storage in temporary
2828: file space.
2829:
2830: =item idput
2831:
2832: Defines usernames as corresponding to IDs. (These "IDs" are unique identifiers
2833: for each student, defined perhaps by the institutional Registrar.)
2834:
2835: =item idget
2836:
2837: Returns usernames corresponding to IDs. (These "IDs" are unique identifiers
2838: for each student, defined perhaps by the institutional Registrar.)
2839:
2840: =item tmpput
2841:
2842: Accept and store information in temporary space.
2843:
2844: =item tmpget
2845:
2846: Send along temporarily stored information.
2847:
2848: =item ls
2849:
2850: List part of a user's directory.
2851:
1.135 foxr 2852: =item pushtable
2853:
2854: Pushes a file in /home/httpd/lonTab directory. Currently limited to:
2855: hosts.tab and domain.tab. The old file is copied to *.tab.backup but
2856: must be restored manually in case of a problem with the new table file.
2857: pushtable requires that the request be encrypted and validated via
2858: ValidateManager. The form of the command is:
2859: enc:pushtable tablename <tablecontents> \n
2860: where pushtable, tablename and <tablecontents> will be encrypted, but \n is a
2861: cleartext newline.
2862:
1.74 harris41 2863: =item Hanging up (exit or init)
2864:
2865: What to do when a client tells the server that they (the client)
2866: are leaving the network.
2867:
2868: =item unknown command
2869:
2870: If B<lond> is sent an unknown command (not in the list above),
2871: it replys to the client "unknown_cmd".
1.135 foxr 2872:
1.74 harris41 2873:
2874: =item UNKNOWN CLIENT
2875:
2876: If the anti-spoofing algorithm cannot verify the client,
2877: the client is rejected (with a "refused" message sent
2878: to the client, and the connection is closed.
2879:
2880: =back
1.61 harris41 2881:
2882: =head1 PREREQUISITES
2883:
2884: IO::Socket
2885: IO::File
2886: Apache::File
2887: Symbol
2888: POSIX
2889: Crypt::IDEA
2890: LWP::UserAgent()
2891: GDBM_File
2892: Authen::Krb4
1.91 albertel 2893: Authen::Krb5
1.61 harris41 2894:
2895: =head1 COREQUISITES
2896:
2897: =head1 OSNAMES
2898:
2899: linux
2900:
2901: =head1 SCRIPT CATEGORIES
2902:
2903: Server/Process
2904:
2905: =cut
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to lond CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom