Annotation of loncom/lond, revision 1.207
1.1 albertel 1: #!/usr/bin/perl
2: # The LearningOnline Network
3: # lond "LON Daemon" Server (port "LOND" 5663)
1.60 www 4: #
1.207 ! foxr 5: # $Id: lond,v 1.206 2004/07/22 23:08:43 raeburn Exp $
1.60 www 6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
1.167 foxr 13: # the Free Software Foundation; either version 2 of the License, or
1.60 www 14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
1.178 foxr 23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
1.60 www 24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
1.161 foxr 27:
28:
1.60 www 29: # http://www.lon-capa.org/
30: #
1.54 harris41 31:
1.134 albertel 32: use strict;
1.80 harris41 33: use lib '/home/httpd/lib/perl/';
34: use LONCAPA::Configuration;
35:
1.1 albertel 36: use IO::Socket;
37: use IO::File;
1.126 albertel 38: #use Apache::File;
1.1 albertel 39: use Symbol;
40: use POSIX;
41: use Crypt::IDEA;
42: use LWP::UserAgent();
1.3 www 43: use GDBM_File;
44: use Authen::Krb4;
1.91 albertel 45: use Authen::Krb5;
1.49 albertel 46: use lib '/home/httpd/lib/perl/';
47: use localauth;
1.193 raeburn 48: use localenroll;
1.143 foxr 49: use File::Copy;
1.169 foxr 50: use LONCAPA::ConfigFileEdit;
1.200 matthew 51: use LONCAPA::lonlocal;
52: use LONCAPA::lonssl;
1.1 albertel 53:
1.204 albertel 54: my $DEBUG = 0; # Non zero to enable debug log entries.
1.77 foxr 55:
1.57 www 56: my $status='';
57: my $lastlog='';
58:
1.207 ! foxr 59: my $VERSION='$Revision: 1.206 $'; #' stupid emacs
1.121 albertel 60: my $remoteVERSION;
1.115 albertel 61: my $currenthostid;
62: my $currentdomainid;
1.134 albertel 63:
64: my $client;
1.200 matthew 65: my $clientip; # IP address of client.
66: my $clientdns; # DNS name of client.
67: my $clientname; # LonCAPA name of client.
1.140 foxr 68:
1.134 albertel 69: my $server;
1.200 matthew 70: my $thisserver; # DNS of us.
71:
72: my $keymode;
1.198 foxr 73:
1.207 ! foxr 74: my $cipher; # Cipher key negotiated with client
! 75: my $tmpsnum = 0; # Id of tmpputs.
! 76:
1.178 foxr 77: #
78: # Connection type is:
79: # client - All client actions are allowed
80: # manager - only management functions allowed.
81: # both - Both management and client actions are allowed
82: #
1.161 foxr 83:
1.178 foxr 84: my $ConnectionType;
1.161 foxr 85:
1.200 matthew 86: my %hostid; # ID's for hosts in cluster by ip.
87: my %hostdom; # LonCAPA domain for hosts in cluster.
88: my %hostip; # IPs for hosts in cluster.
89: my %hostdns; # ID's of hosts looked up by DNS name.
1.161 foxr 90:
1.178 foxr 91: my %managers; # Ip -> manager names
1.161 foxr 92:
1.178 foxr 93: my %perlvar; # Will have the apache conf defined perl vars.
1.134 albertel 94:
1.178 foxr 95: #
1.207 ! foxr 96: # The hash below is used for command dispatching, and is therefore keyed on the request keyword.
! 97: # Each element of the hash contains a reference to an array that contains:
! 98: # A reference to a sub that executes the request corresponding to the keyword.
! 99: # A flag that is true if the request must be encoded to be acceptable.
! 100: # A mask with bits as follows:
! 101: # CLIENT_OK - Set when the function is allowed by ordinary clients
! 102: # MANAGER_OK - Set when the function is allowed to manager clients.
! 103: #
! 104: my $CLIENT_OK = 1;
! 105: my $MANAGER_OK = 2;
! 106: my %Dispatcher;
! 107:
! 108:
! 109: #
1.178 foxr 110: # The array below are password error strings."
111: #
112: my $lastpwderror = 13; # Largest error number from lcpasswd.
113: my @passwderrors = ("ok",
114: "lcpasswd must be run as user 'www'",
115: "lcpasswd got incorrect number of arguments",
116: "lcpasswd did not get the right nubmer of input text lines",
117: "lcpasswd too many simultaneous pwd changes in progress",
118: "lcpasswd User does not exist.",
119: "lcpasswd Incorrect current passwd",
120: "lcpasswd Unable to su to root.",
121: "lcpasswd Cannot set new passwd.",
122: "lcpasswd Username has invalid characters",
123: "lcpasswd Invalid characters in password",
124: "11", "12",
125: "lcpasswd Password mismatch");
1.97 foxr 126:
127:
1.178 foxr 128: # The array below are lcuseradd error strings.:
1.97 foxr 129:
1.178 foxr 130: my $lastadderror = 13;
131: my @adderrors = ("ok",
132: "User ID mismatch, lcuseradd must run as user www",
133: "lcuseradd Incorrect number of command line parameters must be 3",
134: "lcuseradd Incorrect number of stdinput lines, must be 3",
135: "lcuseradd Too many other simultaneous pwd changes in progress",
136: "lcuseradd User does not exist",
137: "lcuseradd Unable to make www member of users's group",
138: "lcuseradd Unable to su to root",
139: "lcuseradd Unable to set password",
140: "lcuseradd Usrname has invalid characters",
141: "lcuseradd Password has an invalid character",
142: "lcuseradd User already exists",
143: "lcuseradd Could not add user.",
144: "lcuseradd Password mismatch");
1.97 foxr 145:
1.96 foxr 146:
1.207 ! foxr 147:
! 148: #
! 149: # Statistics that are maintained and dislayed in the status line.
! 150: #
! 151: my $Transactions; # Number of attempted transactions.
! 152: my $Failures; # Number of transcations failed.
! 153:
! 154: # ResetStatistics:
! 155: # Resets the statistics counters:
! 156: #
! 157: sub ResetStatistics {
! 158: $Transactions = 0;
! 159: $Failures = 0;
! 160: }
! 161:
! 162:
! 163:
1.200 matthew 164: #------------------------------------------------------------------------
165: #
166: # LocalConnection
167: # Completes the formation of a locally authenticated connection.
168: # This function will ensure that the 'remote' client is really the
169: # local host. If not, the connection is closed, and the function fails.
170: # If so, initcmd is parsed for the name of a file containing the
171: # IDEA session key. The fie is opened, read, deleted and the session
172: # key returned to the caller.
173: #
174: # Parameters:
175: # $Socket - Socket open on client.
176: # $initcmd - The full text of the init command.
177: #
178: # Implicit inputs:
179: # $clientdns - The DNS name of the remote client.
180: # $thisserver - Our DNS name.
181: #
182: # Returns:
183: # IDEA session key on success.
184: # undef on failure.
185: #
186: sub LocalConnection {
187: my ($Socket, $initcmd) = @_;
188: Debug("Attempting local connection: $initcmd client: $clientdns me: $thisserver");
189: if($clientdns ne $thisserver) {
190: &logthis('<font color="red"> LocalConnection rejecting non local: '
191: ."$clientdns ne $thisserver </font>");
192: close $Socket;
193: return undef;
194: }
195: else {
196: chomp($initcmd); # Get rid of \n in filename.
197: my ($init, $type, $name) = split(/:/, $initcmd);
198: Debug(" Init command: $init $type $name ");
199:
200: # Require that $init = init, and $type = local: Otherwise
201: # the caller is insane:
202:
203: if(($init ne "init") && ($type ne "local")) {
204: &logthis('<font color = "red"> LocalConnection: caller is insane! '
205: ."init = $init, and type = $type </font>");
206: close($Socket);;
207: return undef;
208:
209: }
210: # Now get the key filename:
211:
212: my $IDEAKey = lonlocal::ReadKeyFile($name);
213: return $IDEAKey;
214: }
215: }
216: #------------------------------------------------------------------------------
217: #
218: # SSLConnection
219: # Completes the formation of an ssh authenticated connection. The
220: # socket is promoted to an ssl socket. If this promotion and the associated
221: # certificate exchange are successful, the IDEA key is generated and sent
222: # to the remote peer via the SSL tunnel. The IDEA key is also returned to
223: # the caller after the SSL tunnel is torn down.
224: #
225: # Parameters:
226: # Name Type Purpose
227: # $Socket IO::Socket::INET Plaintext socket.
228: #
229: # Returns:
230: # IDEA key on success.
231: # undef on failure.
232: #
233: sub SSLConnection {
234: my $Socket = shift;
235:
236: Debug("SSLConnection: ");
237: my $KeyFile = lonssl::KeyFile();
238: if(!$KeyFile) {
239: my $err = lonssl::LastError();
240: &logthis("<font color=\"red\"> CRITICAL"
241: ."Can't get key file $err </font>");
242: return undef;
243: }
244: my ($CACertificate,
245: $Certificate) = lonssl::CertificateFile();
246:
247:
248: # If any of the key, certificate or certificate authority
249: # certificate filenames are not defined, this can't work.
250:
251: if((!$Certificate) || (!$CACertificate)) {
252: my $err = lonssl::LastError();
253: &logthis("<font color=\"red\"> CRITICAL"
254: ."Can't get certificates: $err </font>");
255:
256: return undef;
257: }
258: Debug("Key: $KeyFile CA: $CACertificate Cert: $Certificate");
259:
260: # Indicate to our peer that we can procede with
261: # a transition to ssl authentication:
262:
263: print $Socket "ok:ssl\n";
264:
265: Debug("Approving promotion -> ssl");
266: # And do so:
267:
268: my $SSLSocket = lonssl::PromoteServerSocket($Socket,
269: $CACertificate,
270: $Certificate,
271: $KeyFile);
272: if(! ($SSLSocket) ) { # SSL socket promotion failed.
273: my $err = lonssl::LastError();
274: &logthis("<font color=\"red\"> CRITICAL "
275: ."SSL Socket promotion failed: $err </font>");
276: return undef;
277: }
278: Debug("SSL Promotion successful");
279:
280: #
281: # The only thing we'll use the socket for is to send the IDEA key
282: # to the peer:
283:
284: my $Key = lonlocal::CreateCipherKey();
285: print $SSLSocket "$Key\n";
286:
287: lonssl::Close($SSLSocket);
288:
289: Debug("Key exchange complete: $Key");
290:
291: return $Key;
292: }
293: #
294: # InsecureConnection:
295: # If insecure connections are allowd,
296: # exchange a challenge with the client to 'validate' the
297: # client (not really, but that's the protocol):
298: # We produce a challenge string that's sent to the client.
299: # The client must then echo the challenge verbatim to us.
300: #
301: # Parameter:
302: # Socket - Socket open on the client.
303: # Returns:
304: # 1 - success.
305: # 0 - failure (e.g.mismatch or insecure not allowed).
306: #
307: sub InsecureConnection {
308: my $Socket = shift;
309:
310: # Don't even start if insecure connections are not allowed.
311:
312: if(! $perlvar{londAllowInsecure}) { # Insecure connections not allowed.
313: return 0;
314: }
315:
316: # Fabricate a challenge string and send it..
317:
318: my $challenge = "$$".time; # pid + time.
319: print $Socket "$challenge\n";
320: &status("Waiting for challenge reply");
321:
322: my $answer = <$Socket>;
323: $answer =~s/\W//g;
324: if($challenge eq $answer) {
325: return 1;
326: }
327: else {
328: logthis("<font color='blue'>WARNING client did not respond to challenge</font>");
329: &status("No challenge reqply");
330: return 0;
331: }
332:
333:
334: }
335:
1.96 foxr 336: #
1.140 foxr 337: # GetCertificate: Given a transaction that requires a certificate,
338: # this function will extract the certificate from the transaction
339: # request. Note that at this point, the only concept of a certificate
340: # is the hostname to which we are connected.
341: #
342: # Parameter:
343: # request - The request sent by our client (this parameterization may
344: # need to change when we really use a certificate granting
345: # authority.
346: #
347: sub GetCertificate {
348: my $request = shift;
349:
350: return $clientip;
351: }
1.161 foxr 352:
1.178 foxr 353: #
354: # Return true if client is a manager.
355: #
356: sub isManager {
357: return (($ConnectionType eq "manager") || ($ConnectionType eq "both"));
358: }
359: #
360: # Return tru if client can do client functions
361: #
362: sub isClient {
363: return (($ConnectionType eq "client") || ($ConnectionType eq "both"));
364: }
1.161 foxr 365:
366:
1.156 foxr 367: #
368: # ReadManagerTable: Reads in the current manager table. For now this is
369: # done on each manager authentication because:
370: # - These authentications are not frequent
371: # - This allows dynamic changes to the manager table
372: # without the need to signal to the lond.
373: #
374:
375: sub ReadManagerTable {
376:
377: # Clean out the old table first..
378:
1.166 foxr 379: foreach my $key (keys %managers) {
380: delete $managers{$key};
381: }
382:
383: my $tablename = $perlvar{'lonTabDir'}."/managers.tab";
384: if (!open (MANAGERS, $tablename)) {
385: logthis('<font color="red">No manager table. Nobody can manage!!</font>');
386: return;
387: }
388: while(my $host = <MANAGERS>) {
389: chomp($host);
390: if ($host =~ "^#") { # Comment line.
391: next;
392: }
393: if (!defined $hostip{$host}) { # This is a non cluster member
1.161 foxr 394: # The entry is of the form:
395: # cluname:hostname
396: # cluname - A 'cluster hostname' is needed in order to negotiate
397: # the host key.
398: # hostname- The dns name of the host.
399: #
1.166 foxr 400: my($cluname, $dnsname) = split(/:/, $host);
401:
402: my $ip = gethostbyname($dnsname);
403: if(defined($ip)) { # bad names don't deserve entry.
404: my $hostip = inet_ntoa($ip);
405: $managers{$hostip} = $cluname;
406: logthis('<font color="green"> registering manager '.
407: "$dnsname as $cluname with $hostip </font>\n");
408: }
409: } else {
410: logthis('<font color="green"> existing host'." $host</font>\n");
411: $managers{$hostip{$host}} = $host; # Use info from cluster tab if clumemeber
412: }
413: }
1.156 foxr 414: }
1.140 foxr 415:
416: #
417: # ValidManager: Determines if a given certificate represents a valid manager.
418: # in this primitive implementation, the 'certificate' is
419: # just the connecting loncapa client name. This is checked
420: # against a valid client list in the configuration.
421: #
422: #
423: sub ValidManager {
424: my $certificate = shift;
425:
1.163 foxr 426: return isManager;
1.140 foxr 427: }
428: #
1.143 foxr 429: # CopyFile: Called as part of the process of installing a
430: # new configuration file. This function copies an existing
431: # file to a backup file.
432: # Parameters:
433: # oldfile - Name of the file to backup.
434: # newfile - Name of the backup file.
435: # Return:
436: # 0 - Failure (errno has failure reason).
437: # 1 - Success.
438: #
439: sub CopyFile {
1.192 foxr 440:
441: my ($oldfile, $newfile) = @_;
1.143 foxr 442:
443: # The file must exist:
444:
445: if(-e $oldfile) {
446:
447: # Read the old file.
448:
449: my $oldfh = IO::File->new("< $oldfile");
450: if(!$oldfh) {
451: return 0;
452: }
453: my @contents = <$oldfh>; # Suck in the entire file.
454:
455: # write the backup file:
456:
457: my $newfh = IO::File->new("> $newfile");
458: if(!(defined $newfh)){
459: return 0;
460: }
461: my $lines = scalar @contents;
462: for (my $i =0; $i < $lines; $i++) {
463: print $newfh ($contents[$i]);
464: }
465:
466: $oldfh->close;
467: $newfh->close;
468:
469: chmod(0660, $newfile);
470:
471: return 1;
472:
473: } else {
474: return 0;
475: }
476: }
1.157 foxr 477: #
478: # Host files are passed out with externally visible host IPs.
479: # If, for example, we are behind a fire-wall or NAT host, our
480: # internally visible IP may be different than the externally
481: # visible IP. Therefore, we always adjust the contents of the
482: # host file so that the entry for ME is the IP that we believe
483: # we have. At present, this is defined as the entry that
484: # DNS has for us. If by some chance we are not able to get a
485: # DNS translation for us, then we assume that the host.tab file
486: # is correct.
487: # BUGBUGBUG - in the future, we really should see if we can
488: # easily query the interface(s) instead.
489: # Parameter(s):
490: # contents - The contents of the host.tab to check.
491: # Returns:
492: # newcontents - The adjusted contents.
493: #
494: #
495: sub AdjustHostContents {
496: my $contents = shift;
497: my $adjusted;
498: my $me = $perlvar{'lonHostID'};
499:
1.166 foxr 500: foreach my $line (split(/\n/,$contents)) {
1.157 foxr 501: if(!(($line eq "") || ($line =~ /^ *\#/) || ($line =~ /^ *$/))) {
502: chomp($line);
503: my ($id,$domain,$role,$name,$ip,$maxcon,$idleto,$mincon)=split(/:/,$line);
504: if ($id eq $me) {
1.166 foxr 505: my $ip = gethostbyname($name);
506: my $ipnew = inet_ntoa($ip);
507: $ip = $ipnew;
1.157 foxr 508: # Reconstruct the host line and append to adjusted:
509:
1.166 foxr 510: my $newline = "$id:$domain:$role:$name:$ip";
511: if($maxcon ne "") { # Not all hosts have loncnew tuning params
512: $newline .= ":$maxcon:$idleto:$mincon";
513: }
514: $adjusted .= $newline."\n";
1.157 foxr 515:
1.166 foxr 516: } else { # Not me, pass unmodified.
517: $adjusted .= $line."\n";
518: }
1.157 foxr 519: } else { # Blank or comment never re-written.
520: $adjusted .= $line."\n"; # Pass blanks and comments as is.
521: }
1.166 foxr 522: }
523: return $adjusted;
1.157 foxr 524: }
1.143 foxr 525: #
526: # InstallFile: Called to install an administrative file:
527: # - The file is created with <name>.tmp
528: # - The <name>.tmp file is then mv'd to <name>
529: # This lugubrious procedure is done to ensure that we are never without
530: # a valid, even if dated, version of the file regardless of who crashes
531: # and when the crash occurs.
532: #
533: # Parameters:
534: # Name of the file
535: # File Contents.
536: # Return:
537: # nonzero - success.
538: # 0 - failure and $! has an errno.
539: #
540: sub InstallFile {
1.192 foxr 541:
542: my ($Filename, $Contents) = @_;
1.143 foxr 543: my $TempFile = $Filename.".tmp";
544:
545: # Open the file for write:
546:
547: my $fh = IO::File->new("> $TempFile"); # Write to temp.
548: if(!(defined $fh)) {
549: &logthis('<font color="red"> Unable to create '.$TempFile."</font>");
550: return 0;
551: }
552: # write the contents of the file:
553:
554: print $fh ($Contents);
555: $fh->close; # In case we ever have a filesystem w. locking
556:
557: chmod(0660, $TempFile);
558:
559: # Now we can move install the file in position.
560:
561: move($TempFile, $Filename);
562:
563: return 1;
564: }
1.200 matthew 565:
566:
1.169 foxr 567: #
568: # ConfigFileFromSelector: converts a configuration file selector
569: # (one of host or domain at this point) into a
570: # configuration file pathname.
571: #
572: # Parameters:
573: # selector - Configuration file selector.
574: # Returns:
575: # Full path to the file or undef if the selector is invalid.
576: #
577: sub ConfigFileFromSelector {
578: my $selector = shift;
579: my $tablefile;
580:
581: my $tabledir = $perlvar{'lonTabDir'}.'/';
582: if ($selector eq "hosts") {
583: $tablefile = $tabledir."hosts.tab";
584: } elsif ($selector eq "domain") {
585: $tablefile = $tabledir."domain.tab";
586: } else {
587: return undef;
588: }
589: return $tablefile;
1.143 foxr 590:
1.169 foxr 591: }
1.143 foxr 592: #
1.141 foxr 593: # PushFile: Called to do an administrative push of a file.
594: # - Ensure the file being pushed is one we support.
595: # - Backup the old file to <filename.saved>
596: # - Separate the contents of the new file out from the
597: # rest of the request.
598: # - Write the new file.
599: # Parameter:
600: # Request - The entire user request. This consists of a : separated
601: # string pushfile:tablename:contents.
602: # NOTE: The contents may have :'s in it as well making things a bit
603: # more interesting... but not much.
604: # Returns:
605: # String to send to client ("ok" or "refused" if bad file).
606: #
607: sub PushFile {
608: my $request = shift;
609: my ($command, $filename, $contents) = split(":", $request, 3);
610:
611: # At this point in time, pushes for only the following tables are
612: # supported:
613: # hosts.tab ($filename eq host).
614: # domain.tab ($filename eq domain).
615: # Construct the destination filename or reject the request.
616: #
617: # lonManage is supposed to ensure this, however this session could be
618: # part of some elaborate spoof that managed somehow to authenticate.
619: #
620:
1.169 foxr 621:
622: my $tablefile = ConfigFileFromSelector($filename);
623: if(! (defined $tablefile)) {
1.141 foxr 624: return "refused";
625: }
626: #
627: # >copy< the old table to the backup table
628: # don't rename in case system crashes/reboots etc. in the time
629: # window between a rename and write.
630: #
631: my $backupfile = $tablefile;
632: $backupfile =~ s/\.tab$/.old/;
1.143 foxr 633: if(!CopyFile($tablefile, $backupfile)) {
634: &logthis('<font color="green"> CopyFile from '.$tablefile." to ".$backupfile." failed </font>");
635: return "error:$!";
636: }
1.141 foxr 637: &logthis('<font color="green"> Pushfile: backed up '
638: .$tablefile." to $backupfile</font>");
639:
1.157 foxr 640: # If the file being pushed is the host file, we adjust the entry for ourself so that the
641: # IP will be our current IP as looked up in dns. Note this is only 99% good as it's possible
642: # to conceive of conditions where we don't have a DNS entry locally. This is possible in a
643: # network sense but it doesn't make much sense in a LonCAPA sense so we ignore (for now)
644: # that possibilty.
645:
646: if($filename eq "host") {
647: $contents = AdjustHostContents($contents);
648: }
649:
1.141 foxr 650: # Install the new file:
651:
1.143 foxr 652: if(!InstallFile($tablefile, $contents)) {
653: &logthis('<font color="red"> Pushfile: unable to install '
1.145 foxr 654: .$tablefile." $! </font>");
1.143 foxr 655: return "error:$!";
656: }
657: else {
658: &logthis('<font color="green"> Installed new '.$tablefile
659: ."</font>");
660:
661: }
662:
1.141 foxr 663:
664: # Indicate success:
665:
666: return "ok";
667:
668: }
1.145 foxr 669:
670: #
671: # Called to re-init either lonc or lond.
672: #
673: # Parameters:
674: # request - The full request by the client. This is of the form
675: # reinit:<process>
676: # where <process> is allowed to be either of
677: # lonc or lond
678: #
679: # Returns:
680: # The string to be sent back to the client either:
681: # ok - Everything worked just fine.
682: # error:why - There was a failure and why describes the reason.
683: #
684: #
685: sub ReinitProcess {
686: my $request = shift;
687:
1.146 foxr 688:
689: # separate the request (reinit) from the process identifier and
690: # validate it producing the name of the .pid file for the process.
691: #
692: #
693: my ($junk, $process) = split(":", $request);
1.147 foxr 694: my $processpidfile = $perlvar{'lonDaemons'}.'/logs/';
1.146 foxr 695: if($process eq 'lonc') {
696: $processpidfile = $processpidfile."lonc.pid";
1.147 foxr 697: if (!open(PIDFILE, "< $processpidfile")) {
698: return "error:Open failed for $processpidfile";
699: }
700: my $loncpid = <PIDFILE>;
701: close(PIDFILE);
702: logthis('<font color="red"> Reinitializing lonc pid='.$loncpid
703: ."</font>");
704: kill("USR2", $loncpid);
1.146 foxr 705: } elsif ($process eq 'lond') {
1.147 foxr 706: logthis('<font color="red"> Reinitializing self (lond) </font>');
707: &UpdateHosts; # Lond is us!!
1.146 foxr 708: } else {
709: &logthis('<font color="yellow" Invalid reinit request for '.$process
710: ."</font>");
711: return "error:Invalid process identifier $process";
712: }
1.145 foxr 713: return 'ok';
714: }
1.168 foxr 715: # Validate a line in a configuration file edit script:
716: # Validation includes:
717: # - Ensuring the command is valid.
718: # - Ensuring the command has sufficient parameters
719: # Parameters:
720: # scriptline - A line to validate (\n has been stripped for what it's worth).
1.167 foxr 721: #
1.168 foxr 722: # Return:
723: # 0 - Invalid scriptline.
724: # 1 - Valid scriptline
725: # NOTE:
726: # Only the command syntax is checked, not the executability of the
727: # command.
728: #
729: sub isValidEditCommand {
730: my $scriptline = shift;
731:
732: # Line elements are pipe separated:
733:
734: my ($command, $key, $newline) = split(/\|/, $scriptline);
735: &logthis('<font color="green"> isValideditCommand checking: '.
736: "Command = '$command', Key = '$key', Newline = '$newline' </font>\n");
737:
738: if ($command eq "delete") {
739: #
740: # key with no newline.
741: #
742: if( ($key eq "") || ($newline ne "")) {
743: return 0; # Must have key but no newline.
744: } else {
745: return 1; # Valid syntax.
746: }
1.169 foxr 747: } elsif ($command eq "replace") {
1.168 foxr 748: #
749: # key and newline:
750: #
751: if (($key eq "") || ($newline eq "")) {
752: return 0;
753: } else {
754: return 1;
755: }
1.169 foxr 756: } elsif ($command eq "append") {
757: if (($key ne "") && ($newline eq "")) {
758: return 1;
759: } else {
760: return 0;
761: }
1.168 foxr 762: } else {
763: return 0; # Invalid command.
764: }
765: return 0; # Should not get here!!!
766: }
1.169 foxr 767: #
768: # ApplyEdit - Applies an edit command to a line in a configuration
769: # file. It is the caller's responsiblity to validate the
770: # edit line.
771: # Parameters:
772: # $directive - A single edit directive to apply.
773: # Edit directives are of the form:
774: # append|newline - Appends a new line to the file.
775: # replace|key|newline - Replaces the line with key value 'key'
776: # delete|key - Deletes the line with key value 'key'.
777: # $editor - A config file editor object that contains the
778: # file being edited.
779: #
780: sub ApplyEdit {
1.192 foxr 781:
782: my ($directive, $editor) = @_;
1.169 foxr 783:
784: # Break the directive down into its command and its parameters
785: # (at most two at this point. The meaning of the parameters, if in fact
786: # they exist depends on the command).
787:
788: my ($command, $p1, $p2) = split(/\|/, $directive);
789:
790: if($command eq "append") {
791: $editor->Append($p1); # p1 - key p2 null.
792: } elsif ($command eq "replace") {
793: $editor->ReplaceLine($p1, $p2); # p1 - key p2 = newline.
794: } elsif ($command eq "delete") {
795: $editor->DeleteLine($p1); # p1 - key p2 null.
796: } else { # Should not get here!!!
797: die "Invalid command given to ApplyEdit $command"
798: }
799: }
800: #
801: # AdjustOurHost:
802: # Adjusts a host file stored in a configuration file editor object
803: # for the true IP address of this host. This is necessary for hosts
804: # that live behind a firewall.
805: # Those hosts have a publicly distributed IP of the firewall, but
806: # internally must use their actual IP. We assume that a given
807: # host only has a single IP interface for now.
808: # Formal Parameters:
809: # editor - The configuration file editor to adjust. This
810: # editor is assumed to contain a hosts.tab file.
811: # Strategy:
812: # - Figure out our hostname.
813: # - Lookup the entry for this host.
814: # - Modify the line to contain our IP
815: # - Do a replace for this host.
816: sub AdjustOurHost {
817: my $editor = shift;
818:
819: # figure out who I am.
820:
821: my $myHostName = $perlvar{'lonHostID'}; # LonCAPA hostname.
822:
823: # Get my host file entry.
824:
825: my $ConfigLine = $editor->Find($myHostName);
826: if(! (defined $ConfigLine)) {
827: die "AdjustOurHost - no entry for me in hosts file $myHostName";
828: }
829: # figure out my IP:
830: # Use the config line to get my hostname.
831: # Use gethostbyname to translate that into an IP address.
832: #
833: my ($id,$domain,$role,$name,$ip,$maxcon,$idleto,$mincon) = split(/:/,$ConfigLine);
834: my $BinaryIp = gethostbyname($name);
835: my $ip = inet_ntoa($ip);
836: #
837: # Reassemble the config line from the elements in the list.
838: # Note that if the loncnew items were not present before, they will
839: # be now even if they would be empty
840: #
841: my $newConfigLine = $id;
842: foreach my $item ($domain, $role, $name, $ip, $maxcon, $idleto, $mincon) {
843: $newConfigLine .= ":".$item;
844: }
845: # Replace the line:
846:
847: $editor->ReplaceLine($id, $newConfigLine);
848:
849: }
850: #
851: # ReplaceConfigFile:
852: # Replaces a configuration file with the contents of a
853: # configuration file editor object.
854: # This is done by:
855: # - Copying the target file to <filename>.old
856: # - Writing the new file to <filename>.tmp
857: # - Moving <filename.tmp> -> <filename>
858: # This laborious process ensures that the system is never without
859: # a configuration file that's at least valid (even if the contents
860: # may be dated).
861: # Parameters:
862: # filename - Name of the file to modify... this is a full path.
863: # editor - Editor containing the file.
864: #
865: sub ReplaceConfigFile {
1.192 foxr 866:
867: my ($filename, $editor) = @_;
1.168 foxr 868:
1.169 foxr 869: CopyFile ($filename, $filename.".old");
870:
871: my $contents = $editor->Get(); # Get the contents of the file.
872:
873: InstallFile($filename, $contents);
874: }
1.168 foxr 875: #
876: #
877: # Called to edit a configuration table file
1.167 foxr 878: # Parameters:
879: # request - The entire command/request sent by lonc or lonManage
880: # Return:
881: # The reply to send to the client.
1.168 foxr 882: #
1.167 foxr 883: sub EditFile {
884: my $request = shift;
885:
886: # Split the command into it's pieces: edit:filetype:script
887:
1.168 foxr 888: my ($request, $filetype, $script) = split(/:/, $request,3); # : in script
1.167 foxr 889:
890: # Check the pre-coditions for success:
891:
892: if($request != "edit") { # Something is amiss afoot alack.
893: return "error:edit request detected, but request != 'edit'\n";
894: }
895: if( ($filetype ne "hosts") &&
896: ($filetype ne "domain")) {
897: return "error:edit requested with invalid file specifier: $filetype \n";
898: }
899:
900: # Split the edit script and check it's validity.
1.168 foxr 901:
902: my @scriptlines = split(/\n/, $script); # one line per element.
903: my $linecount = scalar(@scriptlines);
904: for(my $i = 0; $i < $linecount; $i++) {
905: chomp($scriptlines[$i]);
906: if(!isValidEditCommand($scriptlines[$i])) {
907: return "error:edit with bad script line: '$scriptlines[$i]' \n";
908: }
909: }
1.145 foxr 910:
1.167 foxr 911: # Execute the edit operation.
1.169 foxr 912: # - Create a config file editor for the appropriate file and
913: # - execute each command in the script:
914: #
915: my $configfile = ConfigFileFromSelector($filetype);
916: if (!(defined $configfile)) {
917: return "refused\n";
918: }
919: my $editor = ConfigFileEdit->new($configfile);
1.167 foxr 920:
1.169 foxr 921: for (my $i = 0; $i < $linecount; $i++) {
922: ApplyEdit($scriptlines[$i], $editor);
923: }
924: # If the file is the host file, ensure that our host is
925: # adjusted to have our ip:
926: #
927: if($filetype eq "host") {
928: AdjustOurHost($editor);
929: }
930: # Finally replace the current file with our file.
931: #
932: ReplaceConfigFile($configfile, $editor);
1.167 foxr 933:
934: return "ok\n";
935: }
1.207 ! foxr 936:
! 937: #---------------------------------------------------------------
! 938: #
! 939: # Manipulation of hash based databases (factoring out common code
! 940: # for later use as we refactor.
! 941: #
! 942: # Ties a domain level resource file to a hash.
! 943: # If requested a history entry is created in the associated hist file.
! 944: #
! 945: # Parameters:
! 946: # domain - Name of the domain in which the resource file lives.
! 947: # namespace - Name of the hash within that domain.
! 948: # how - How to tie the hash (e.g. GDBM_WRCREAT()).
! 949: # loghead - Optional parameter, if present a log entry is created
! 950: # in the associated history file and this is the first part
! 951: # of that entry.
! 952: # logtail - Goes along with loghead, The actual logentry is of the
! 953: # form $loghead:<timestamp>:logtail.
! 954: # Returns:
! 955: # Reference to a hash bound to the db file or alternatively undef
! 956: # if the tie failed.
! 957: #
! 958: sub TieDomainHash {
! 959: my ($domain,
! 960: $namespace,
! 961: $how) = @_;
! 962:
! 963: # Filter out any whitespace in the domain name:
! 964:
! 965: $domain =~ s/\W//g;
! 966:
! 967: # We have enough to go on to tie the hash:
! 968:
! 969: my $user_top_dir = $perlvar{'lonUsersDir'};
! 970: my $domain_dir = $user_top_dir."/$domain";
! 971: my $resource_file = $domain_dir."/$namespace.db";
! 972: my %hash;
! 973: if(tie(%hash, 'GDBM_File', $resource_file, $how, 0640)) {
! 974: if (scalar @_) { # Need to log the operation.
! 975: my $logFh = IO::File->new(">>domain_dir/$namespace.hist");
! 976: if($logFh) {
! 977: my $timestamp = time;
! 978: my ($loghead, $logtail) = @_;
! 979: print $logFh "$loghead:$timestamp:$logtail\n";
! 980: }
! 981: }
! 982: return \%hash; # Return the tied hash.
! 983: }
! 984: else {
! 985: return undef; # Tie failed.
! 986: }
! 987: }
! 988:
! 989: #
! 990: # Ties a user's resource file to a hash.
! 991: # If necessary, an appropriate history
! 992: # log file entry is made as well.
! 993: # This sub factors out common code from the subs that manipulate
! 994: # the various gdbm files that keep keyword value pairs.
! 995: # Parameters:
! 996: # domain - Name of the domain the user is in.
! 997: # user - Name of the 'current user'.
! 998: # namespace - Namespace representing the file to tie.
! 999: # how - What the tie is done to (e.g. GDBM_WRCREAT().
! 1000: # loghead - Optional first part of log entry if there may be a
! 1001: # history file.
! 1002: # what - Optional tail of log entry if there may be a history
! 1003: # file.
! 1004: # Returns:
! 1005: # hash to which the database is tied. It's up to the caller to untie.
! 1006: # undef if the has could not be tied.
! 1007: #
! 1008: sub TieUserHash {
! 1009: my ($domain,
! 1010: $user,
! 1011: $namespace,
! 1012: $how) = @_;
! 1013:
! 1014:
! 1015: $namespace=~s/\//\_/g; # / -> _
! 1016: $namespace=~s/\W//g; # whitespace eliminated.
! 1017: my $proname = propath($domain, $user);
! 1018:
! 1019: # If this is a namespace for which a history is kept,
! 1020: # make the history log entry:
! 1021:
! 1022:
! 1023: if (($namespace =~/^nohist\_/) && (scalar @_ > 0)) {
! 1024: my $args = scalar @_;
! 1025: Debug(" Opening history: $namespace $args");
! 1026: my $hfh = IO::File->new(">>$proname/$namespace.hist");
! 1027: if($hfh) {
! 1028: my $now = time;
! 1029: my $loghead = shift;
! 1030: my $what = shift;
! 1031: print $hfh "$loghead:$now:$what\n";
! 1032: }
! 1033: }
! 1034: # Tie the database.
! 1035:
! 1036: my %hash;
! 1037: if(tie(%hash, 'GDBM_File', "$proname/$namespace.db",
! 1038: $how, 0640)) {
! 1039: return \%hash;
! 1040: }
! 1041: else {
! 1042: return undef;
! 1043: }
! 1044:
! 1045: }
! 1046: #---------------------------------------------------------------
! 1047: #
! 1048: # Getting, decoding and dispatching requests:
! 1049: #
! 1050:
! 1051: #
! 1052: # Get a Request:
! 1053: # Gets a Request message from the client. The transaction
! 1054: # is defined as a 'line' of text. We remove the new line
! 1055: # from the text line.
! 1056: #
! 1057: sub GetRequest {
! 1058: my $input = <$client>;
! 1059: chomp($input);
! 1060:
! 1061: Debug("Request = $input\n");
! 1062:
! 1063: &status('Processing '.$clientname.':'.$input);
! 1064:
! 1065: return $input;
! 1066: }
! 1067: #
! 1068: # Decipher encoded traffic
! 1069: # Parameters:
! 1070: # input - Encoded data.
! 1071: # Returns:
! 1072: # Decoded data or undef if encryption key was not yet negotiated.
! 1073: # Implicit input:
! 1074: # cipher - This global holds the negotiated encryption key.
! 1075: #
! 1076: sub Decipher {
! 1077: my ($input) = @_;
! 1078: my $output = '';
! 1079:
! 1080:
! 1081: if($cipher) {
! 1082: my($enc, $enclength, $encinput) = split(/:/, $input);
! 1083: for(my $encidx = 0; $encidx < length($encinput); $encidx += 16) {
! 1084: $output .=
! 1085: $cipher->decrypt(pack("H16", substr($encinput, $encidx, 16)));
! 1086: }
! 1087: return substr($output, 0, $enclength);
! 1088: } else {
! 1089: return undef;
! 1090: }
! 1091: }
! 1092:
! 1093: #
! 1094: # Register a command processor. This function is invoked to register a sub
! 1095: # to process a request. Once registered, the ProcessRequest sub can automatically
! 1096: # dispatch requests to an appropriate sub, and do the top level validity checking
! 1097: # as well:
! 1098: # - Is the keyword recognized.
! 1099: # - Is the proper client type attempting the request.
! 1100: # - Is the request encrypted if it has to be.
! 1101: # Parameters:
! 1102: # $request_name - Name of the request being registered.
! 1103: # This is the command request that will match
! 1104: # against the hash keywords to lookup the information
! 1105: # associated with the dispatch information.
! 1106: # $procedure - Reference to a sub to call to process the request.
! 1107: # All subs get called as follows:
! 1108: # Procedure($cmd, $tail, $replyfd, $key)
! 1109: # $cmd - the actual keyword that invoked us.
! 1110: # $tail - the tail of the request that invoked us.
! 1111: # $replyfd- File descriptor connected to the client
! 1112: # $must_encode - True if the request must be encoded to be good.
! 1113: # $client_ok - True if it's ok for a client to request this.
! 1114: # $manager_ok - True if it's ok for a manager to request this.
! 1115: # Side effects:
! 1116: # - On success, the Dispatcher hash has an entry added for the key $RequestName
! 1117: # - On failure, the program will die as it's a bad internal bug to try to
! 1118: # register a duplicate command handler.
! 1119: #
! 1120: sub RegisterHandler {
! 1121: my ($request_name,
! 1122: $procedure,
! 1123: $must_encode,
! 1124: $client_ok,
! 1125: $manager_ok) = @_;
! 1126:
! 1127: # Don't allow duplication#
! 1128:
! 1129: if (defined $Dispatcher{$request_name}) {
! 1130: die "Attempting to define a duplicate request handler for $request_name\n";
! 1131: }
! 1132: # Build the client type mask:
! 1133:
! 1134: my $client_type_mask = 0;
! 1135: if($client_ok) {
! 1136: $client_type_mask |= $CLIENT_OK;
! 1137: }
! 1138: if($manager_ok) {
! 1139: $client_type_mask |= $MANAGER_OK;
! 1140: }
! 1141:
! 1142: # Enter the hash:
! 1143:
! 1144: my @entry = ($procedure, $must_encode, $client_type_mask);
! 1145:
! 1146: $Dispatcher{$request_name} = \@entry;
! 1147:
! 1148:
! 1149: }
! 1150:
! 1151:
! 1152: #------------------------------------------------------------------
! 1153:
! 1154:
! 1155:
! 1156:
1.141 foxr 1157: #
1.96 foxr 1158: # Convert an error return code from lcpasswd to a string value.
1159: #
1160: sub lcpasswdstrerror {
1161: my $ErrorCode = shift;
1.97 foxr 1162: if(($ErrorCode < 0) || ($ErrorCode > $lastpwderror)) {
1.96 foxr 1163: return "lcpasswd Unrecognized error return value ".$ErrorCode;
1164: } else {
1.98 foxr 1165: return $passwderrors[$ErrorCode];
1.96 foxr 1166: }
1167: }
1168:
1.97 foxr 1169: #
1170: # Convert an error return code from lcuseradd to a string value:
1171: #
1172: sub lcuseraddstrerror {
1173: my $ErrorCode = shift;
1174: if(($ErrorCode < 0) || ($ErrorCode > $lastadderror)) {
1175: return "lcuseradd - Unrecognized error code: ".$ErrorCode;
1176: } else {
1.98 foxr 1177: return $adderrors[$ErrorCode];
1.97 foxr 1178: }
1179: }
1180:
1.23 harris41 1181: # grabs exception and records it to log before exiting
1182: sub catchexception {
1.27 albertel 1183: my ($error)=@_;
1.25 www 1184: $SIG{'QUIT'}='DEFAULT';
1185: $SIG{__DIE__}='DEFAULT';
1.165 albertel 1186: &status("Catching exception");
1.190 albertel 1187: &logthis("<font color='red'>CRITICAL: "
1.134 albertel 1188: ."ABNORMAL EXIT. Child $$ for server $thisserver died through "
1.27 albertel 1189: ."a crash with this error msg->[$error]</font>");
1.57 www 1190: &logthis('Famous last words: '.$status.' - '.$lastlog);
1.27 albertel 1191: if ($client) { print $client "error: $error\n"; }
1.59 www 1192: $server->close();
1.27 albertel 1193: die($error);
1.23 harris41 1194: }
1195:
1.63 www 1196: sub timeout {
1.165 albertel 1197: &status("Handling Timeout");
1.190 albertel 1198: &logthis("<font color='red'>CRITICAL: TIME OUT ".$$."</font>");
1.63 www 1199: &catchexception('Timeout');
1200: }
1.22 harris41 1201: # -------------------------------- Set signal handlers to record abnormal exits
1202:
1203: $SIG{'QUIT'}=\&catchexception;
1204: $SIG{__DIE__}=\&catchexception;
1205:
1.81 matthew 1206: # ---------------------------------- Read loncapa_apache.conf and loncapa.conf
1.95 harris41 1207: &status("Read loncapa.conf and loncapa_apache.conf");
1208: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
1.141 foxr 1209: %perlvar=%{$perlvarref};
1.80 harris41 1210: undef $perlvarref;
1.19 www 1211:
1.35 harris41 1212: # ----------------------------- Make sure this process is running from user=www
1213: my $wwwid=getpwnam('www');
1214: if ($wwwid!=$<) {
1.134 albertel 1215: my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
1216: my $subj="LON: $currenthostid User ID mismatch";
1.37 harris41 1217: system("echo 'User ID mismatch. lond must be run as user www.' |\
1.35 harris41 1218: mailto $emailto -s '$subj' > /dev/null");
1219: exit 1;
1220: }
1221:
1.19 www 1222: # --------------------------------------------- Check if other instance running
1223:
1224: my $pidfile="$perlvar{'lonDaemons'}/logs/lond.pid";
1225:
1226: if (-e $pidfile) {
1227: my $lfh=IO::File->new("$pidfile");
1228: my $pide=<$lfh>;
1229: chomp($pide);
1.29 harris41 1230: if (kill 0 => $pide) { die "already running"; }
1.19 www 1231: }
1.1 albertel 1232:
1233: # ------------------------------------------------------------- Read hosts file
1234:
1235:
1236:
1237: # establish SERVER socket, bind and listen.
1238: $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},
1239: Type => SOCK_STREAM,
1240: Proto => 'tcp',
1241: Reuse => 1,
1242: Listen => 10 )
1.29 harris41 1243: or die "making socket: $@\n";
1.1 albertel 1244:
1245: # --------------------------------------------------------- Do global variables
1246:
1247: # global variables
1248:
1.134 albertel 1249: my %children = (); # keys are current child process IDs
1.1 albertel 1250:
1251: sub REAPER { # takes care of dead children
1252: $SIG{CHLD} = \&REAPER;
1.165 albertel 1253: &status("Handling child death");
1.178 foxr 1254: my $pid;
1255: do {
1256: $pid = waitpid(-1,&WNOHANG());
1257: if (defined($children{$pid})) {
1258: &logthis("Child $pid died");
1259: delete($children{$pid});
1.183 albertel 1260: } elsif ($pid > 0) {
1.178 foxr 1261: &logthis("Unknown Child $pid died");
1262: }
1263: } while ( $pid > 0 );
1264: foreach my $child (keys(%children)) {
1265: $pid = waitpid($child,&WNOHANG());
1266: if ($pid > 0) {
1267: &logthis("Child $child - $pid looks like we missed it's death");
1268: delete($children{$pid});
1269: }
1.176 albertel 1270: }
1.165 albertel 1271: &status("Finished Handling child death");
1.1 albertel 1272: }
1273:
1274: sub HUNTSMAN { # signal handler for SIGINT
1.165 albertel 1275: &status("Killing children (INT)");
1.1 albertel 1276: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
1277: kill 'INT' => keys %children;
1.59 www 1278: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.1 albertel 1279: my $execdir=$perlvar{'lonDaemons'};
1280: unlink("$execdir/logs/lond.pid");
1.190 albertel 1281: &logthis("<font color='red'>CRITICAL: Shutting down</font>");
1.165 albertel 1282: &status("Done killing children");
1.1 albertel 1283: exit; # clean up with dignity
1284: }
1285:
1286: sub HUPSMAN { # signal handler for SIGHUP
1287: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
1.165 albertel 1288: &status("Killing children for restart (HUP)");
1.1 albertel 1289: kill 'INT' => keys %children;
1.59 www 1290: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.190 albertel 1291: &logthis("<font color='red'>CRITICAL: Restarting</font>");
1.134 albertel 1292: my $execdir=$perlvar{'lonDaemons'};
1.30 harris41 1293: unlink("$execdir/logs/lond.pid");
1.165 albertel 1294: &status("Restarting self (HUP)");
1.1 albertel 1295: exec("$execdir/lond"); # here we go again
1296: }
1297:
1.144 foxr 1298: #
1.148 foxr 1299: # Kill off hashes that describe the host table prior to re-reading it.
1300: # Hashes affected are:
1.200 matthew 1301: # %hostid, %hostdom %hostip %hostdns.
1.148 foxr 1302: #
1303: sub KillHostHashes {
1304: foreach my $key (keys %hostid) {
1305: delete $hostid{$key};
1306: }
1307: foreach my $key (keys %hostdom) {
1308: delete $hostdom{$key};
1309: }
1310: foreach my $key (keys %hostip) {
1311: delete $hostip{$key};
1312: }
1.200 matthew 1313: foreach my $key (keys %hostdns) {
1314: delete $hostdns{$key};
1315: }
1.148 foxr 1316: }
1317: #
1318: # Read in the host table from file and distribute it into the various hashes:
1319: #
1320: # - %hostid - Indexed by IP, the loncapa hostname.
1321: # - %hostdom - Indexed by loncapa hostname, the domain.
1322: # - %hostip - Indexed by hostid, the Ip address of the host.
1323: sub ReadHostTable {
1324:
1325: open (CONFIG,"$perlvar{'lonTabDir'}/hosts.tab") || die "Can't read host file";
1.200 matthew 1326: my $myloncapaname = $perlvar{'lonHostID'};
1327: Debug("My loncapa name is : $myloncapaname");
1.148 foxr 1328: while (my $configline=<CONFIG>) {
1.178 foxr 1329: if (!($configline =~ /^\s*\#/)) {
1330: my ($id,$domain,$role,$name,$ip)=split(/:/,$configline);
1331: chomp($ip); $ip=~s/\D+$//;
1.200 matthew 1332: $hostid{$ip}=$id; # LonCAPA name of host by IP.
1333: $hostdom{$id}=$domain; # LonCAPA domain name of host.
1334: $hostip{$id}=$ip; # IP address of host.
1335: $hostdns{$name} = $id; # LonCAPA name of host by DNS.
1336:
1337: if ($id eq $perlvar{'lonHostID'}) {
1338: Debug("Found me in the host table: $name");
1339: $thisserver=$name;
1340: }
1.178 foxr 1341: }
1.148 foxr 1342: }
1343: close(CONFIG);
1344: }
1345: #
1346: # Reload the Apache daemon's state.
1.150 foxr 1347: # This is done by invoking /home/httpd/perl/apachereload
1348: # a setuid perl script that can be root for us to do this job.
1.148 foxr 1349: #
1350: sub ReloadApache {
1.150 foxr 1351: my $execdir = $perlvar{'lonDaemons'};
1352: my $script = $execdir."/apachereload";
1353: system($script);
1.148 foxr 1354: }
1355:
1356: #
1.144 foxr 1357: # Called in response to a USR2 signal.
1358: # - Reread hosts.tab
1359: # - All children connected to hosts that were removed from hosts.tab
1360: # are killed via SIGINT
1361: # - All children connected to previously existing hosts are sent SIGUSR1
1362: # - Our internal hosts hash is updated to reflect the new contents of
1363: # hosts.tab causing connections from hosts added to hosts.tab to
1364: # now be honored.
1365: #
1366: sub UpdateHosts {
1.165 albertel 1367: &status("Reload hosts.tab");
1.147 foxr 1368: logthis('<font color="blue"> Updating connections </font>');
1.148 foxr 1369: #
1370: # The %children hash has the set of IP's we currently have children
1371: # on. These need to be matched against records in the hosts.tab
1372: # Any ip's no longer in the table get killed off they correspond to
1373: # either dropped or changed hosts. Note that the re-read of the table
1374: # will take care of new and changed hosts as connections come into being.
1375:
1376:
1377: KillHostHashes;
1378: ReadHostTable;
1379:
1380: foreach my $child (keys %children) {
1381: my $childip = $children{$child};
1382: if(!$hostid{$childip}) {
1.149 foxr 1383: logthis('<font color="blue"> UpdateHosts killing child '
1384: ." $child for ip $childip </font>");
1.148 foxr 1385: kill('INT', $child);
1.149 foxr 1386: } else {
1387: logthis('<font color="green"> keeping child for ip '
1388: ." $childip (pid=$child) </font>");
1.148 foxr 1389: }
1390: }
1391: ReloadApache;
1.165 albertel 1392: &status("Finished reloading hosts.tab");
1.144 foxr 1393: }
1394:
1.148 foxr 1395:
1.57 www 1396: sub checkchildren {
1.165 albertel 1397: &status("Checking on the children (sending signals)");
1.57 www 1398: &initnewstatus();
1399: &logstatus();
1400: &logthis('Going to check on the children');
1.134 albertel 1401: my $docdir=$perlvar{'lonDocRoot'};
1.61 harris41 1402: foreach (sort keys %children) {
1.57 www 1403: sleep 1;
1404: unless (kill 'USR1' => $_) {
1405: &logthis ('Child '.$_.' is dead');
1406: &logstatus($$.' is dead');
1407: }
1.61 harris41 1408: }
1.63 www 1409: sleep 5;
1.113 albertel 1410: $SIG{ALRM} = sub { die "timeout" };
1411: $SIG{__DIE__} = 'DEFAULT';
1.165 albertel 1412: &status("Checking on the children (waiting for reports)");
1.63 www 1413: foreach (sort keys %children) {
1414: unless (-e "$docdir/lon-status/londchld/$_.txt") {
1.113 albertel 1415: eval {
1416: alarm(300);
1.63 www 1417: &logthis('Child '.$_.' did not respond');
1.67 albertel 1418: kill 9 => $_;
1.131 albertel 1419: #$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
1420: #$subj="LON: $currenthostid killed lond process $_";
1421: #my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null`;
1422: #$execdir=$perlvar{'lonDaemons'};
1423: #$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_`;
1.113 albertel 1424: alarm(0);
1425: }
1.63 www 1426: }
1427: }
1.113 albertel 1428: $SIG{ALRM} = 'DEFAULT';
1.155 albertel 1429: $SIG{__DIE__} = \&catchexception;
1.165 albertel 1430: &status("Finished checking children");
1.57 www 1431: }
1432:
1.1 albertel 1433: # --------------------------------------------------------------------- Logging
1434:
1435: sub logthis {
1436: my $message=shift;
1437: my $execdir=$perlvar{'lonDaemons'};
1438: my $fh=IO::File->new(">>$execdir/logs/lond.log");
1439: my $now=time;
1440: my $local=localtime($now);
1.58 www 1441: $lastlog=$local.': '.$message;
1.1 albertel 1442: print $fh "$local ($$): $message\n";
1443: }
1444:
1.77 foxr 1445: # ------------------------- Conditional log if $DEBUG true.
1446: sub Debug {
1447: my $message = shift;
1448: if($DEBUG) {
1449: &logthis($message);
1450: }
1451: }
1.161 foxr 1452:
1453: #
1454: # Sub to do replies to client.. this gives a hook for some
1455: # debug tracing too:
1456: # Parameters:
1457: # fd - File open on client.
1458: # reply - Text to send to client.
1459: # request - Original request from client.
1460: #
1461: sub Reply {
1.192 foxr 1462:
1463: my ($fd, $reply, $request) = @_;
1.161 foxr 1464:
1465: print $fd $reply;
1466: Debug("Request was $request Reply was $reply");
1467:
1468: }
1.57 www 1469: # ------------------------------------------------------------------ Log status
1470:
1471: sub logstatus {
1.178 foxr 1472: &status("Doing logging");
1473: my $docdir=$perlvar{'lonDocRoot'};
1474: {
1475: my $fh=IO::File->new(">>$docdir/lon-status/londstatus.txt");
1.200 matthew 1476: print $fh $$."\t".$clientname."\t".$currenthostid."\t"
1477: .$status."\t".$lastlog."\t $keymode\n";
1.178 foxr 1478: $fh->close();
1479: }
1480: &status("Finished londstatus.txt");
1481: {
1482: my $fh=IO::File->new(">$docdir/lon-status/londchld/$$.txt");
1.200 matthew 1483: print $fh $status."\n".$lastlog."\n".time."\n$keymode";
1.178 foxr 1484: $fh->close();
1485: }
1486: &status("Finished logging");
1.57 www 1487: }
1488:
1489: sub initnewstatus {
1490: my $docdir=$perlvar{'lonDocRoot'};
1491: my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt");
1492: my $now=time;
1493: my $local=localtime($now);
1494: print $fh "LOND status $local - parent $$\n\n";
1.64 www 1495: opendir(DIR,"$docdir/lon-status/londchld");
1.134 albertel 1496: while (my $filename=readdir(DIR)) {
1.64 www 1497: unlink("$docdir/lon-status/londchld/$filename");
1498: }
1499: closedir(DIR);
1.57 www 1500: }
1501:
1502: # -------------------------------------------------------------- Status setting
1503:
1504: sub status {
1505: my $what=shift;
1506: my $now=time;
1507: my $local=localtime($now);
1.178 foxr 1508: $status=$local.': '.$what;
1509: $0='lond: '.$what.' '.$local;
1.57 www 1510: }
1.11 www 1511:
1512: # -------------------------------------------------------- Escape Special Chars
1513:
1514: sub escape {
1515: my $str=shift;
1516: $str =~ s/(\W)/"%".unpack('H2',$1)/eg;
1517: return $str;
1518: }
1519:
1520: # ----------------------------------------------------- Un-Escape Special Chars
1521:
1522: sub unescape {
1523: my $str=shift;
1524: $str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1525: return $str;
1526: }
1527:
1.1 albertel 1528: # ----------------------------------------------------------- Send USR1 to lonc
1529:
1530: sub reconlonc {
1531: my $peerfile=shift;
1532: &logthis("Trying to reconnect for $peerfile");
1533: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
1534: if (my $fh=IO::File->new("$loncfile")) {
1535: my $loncpid=<$fh>;
1536: chomp($loncpid);
1537: if (kill 0 => $loncpid) {
1538: &logthis("lonc at pid $loncpid responding, sending USR1");
1539: kill USR1 => $loncpid;
1540: } else {
1.9 www 1541: &logthis(
1.190 albertel 1542: "<font color='red'>CRITICAL: "
1.9 www 1543: ."lonc at pid $loncpid not responding, giving up</font>");
1.1 albertel 1544: }
1545: } else {
1.190 albertel 1546: &logthis('<font color="red">CRITICAL: lonc not running, giving up</font>');
1.1 albertel 1547: }
1548: }
1549:
1550: # -------------------------------------------------- Non-critical communication
1.11 www 1551:
1.1 albertel 1552: sub subreply {
1553: my ($cmd,$server)=@_;
1554: my $peerfile="$perlvar{'lonSockDir'}/$server";
1555: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
1556: Type => SOCK_STREAM,
1557: Timeout => 10)
1558: or return "con_lost";
1559: print $sclient "$cmd\n";
1560: my $answer=<$sclient>;
1561: chomp($answer);
1562: if (!$answer) { $answer="con_lost"; }
1563: return $answer;
1564: }
1565:
1566: sub reply {
1567: my ($cmd,$server)=@_;
1568: my $answer;
1.115 albertel 1569: if ($server ne $currenthostid) {
1.1 albertel 1570: $answer=subreply($cmd,$server);
1571: if ($answer eq 'con_lost') {
1572: $answer=subreply("ping",$server);
1573: if ($answer ne $server) {
1.115 albertel 1574: &logthis("sub reply: answer != server answer is $answer, server is $server");
1.1 albertel 1575: &reconlonc("$perlvar{'lonSockDir'}/$server");
1576: }
1577: $answer=subreply($cmd,$server);
1578: }
1579: } else {
1580: $answer='self_reply';
1581: }
1582: return $answer;
1583: }
1584:
1.13 www 1585: # -------------------------------------------------------------- Talk to lonsql
1586:
1.12 harris41 1587: sub sqlreply {
1588: my ($cmd)=@_;
1589: my $answer=subsqlreply($cmd);
1590: if ($answer eq 'con_lost') { $answer=subsqlreply($cmd); }
1591: return $answer;
1592: }
1593:
1594: sub subsqlreply {
1595: my ($cmd)=@_;
1596: my $unixsock="mysqlsock";
1597: my $peerfile="$perlvar{'lonSockDir'}/$unixsock";
1598: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
1599: Type => SOCK_STREAM,
1600: Timeout => 10)
1601: or return "con_lost";
1602: print $sclient "$cmd\n";
1603: my $answer=<$sclient>;
1604: chomp($answer);
1605: if (!$answer) { $answer="con_lost"; }
1606: return $answer;
1607: }
1608:
1.1 albertel 1609: # -------------------------------------------- Return path to profile directory
1.11 www 1610:
1.1 albertel 1611: sub propath {
1612: my ($udom,$uname)=@_;
1613: $udom=~s/\W//g;
1614: $uname=~s/\W//g;
1.16 www 1615: my $subdir=$uname.'__';
1.1 albertel 1616: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
1617: my $proname="$perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
1618: return $proname;
1619: }
1620:
1621: # --------------------------------------- Is this the home server of an author?
1.11 www 1622:
1.1 albertel 1623: sub ishome {
1624: my $author=shift;
1625: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1626: my ($udom,$uname)=split(/\//,$author);
1627: my $proname=propath($udom,$uname);
1628: if (-e $proname) {
1629: return 'owner';
1630: } else {
1631: return 'not_owner';
1632: }
1633: }
1634:
1635: # ======================================================= Continue main program
1636: # ---------------------------------------------------- Fork once and dissociate
1637:
1.134 albertel 1638: my $fpid=fork;
1.1 albertel 1639: exit if $fpid;
1.29 harris41 1640: die "Couldn't fork: $!" unless defined ($fpid);
1.1 albertel 1641:
1.29 harris41 1642: POSIX::setsid() or die "Can't start new session: $!";
1.1 albertel 1643:
1644: # ------------------------------------------------------- Write our PID on disk
1645:
1.134 albertel 1646: my $execdir=$perlvar{'lonDaemons'};
1.1 albertel 1647: open (PIDSAVE,">$execdir/logs/lond.pid");
1648: print PIDSAVE "$$\n";
1649: close(PIDSAVE);
1.190 albertel 1650: &logthis("<font color='red'>CRITICAL: ---------- Starting ----------</font>");
1.57 www 1651: &status('Starting');
1.1 albertel 1652:
1.106 foxr 1653:
1.1 albertel 1654:
1655: # ----------------------------------------------------- Install signal handlers
1656:
1.57 www 1657:
1.1 albertel 1658: $SIG{CHLD} = \&REAPER;
1659: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
1660: $SIG{HUP} = \&HUPSMAN;
1.57 www 1661: $SIG{USR1} = \&checkchildren;
1.144 foxr 1662: $SIG{USR2} = \&UpdateHosts;
1.106 foxr 1663:
1.148 foxr 1664: # Read the host hashes:
1665:
1666: ReadHostTable;
1.106 foxr 1667:
1668: # --------------------------------------------------------------
1669: # Accept connections. When a connection comes in, it is validated
1670: # and if good, a child process is created to process transactions
1671: # along the connection.
1672:
1.1 albertel 1673: while (1) {
1.165 albertel 1674: &status('Starting accept');
1.106 foxr 1675: $client = $server->accept() or next;
1.165 albertel 1676: &status('Accepted '.$client.' off to spawn');
1.106 foxr 1677: make_new_child($client);
1.165 albertel 1678: &status('Finished spawning');
1.1 albertel 1679: }
1680:
1681: sub make_new_child {
1682: my $pid;
1.207 ! foxr 1683: # my $cipher; # Now global
1.1 albertel 1684: my $sigset;
1.106 foxr 1685:
1686: $client = shift;
1.165 albertel 1687: &status('Starting new child '.$client);
1.161 foxr 1688: &logthis('<font color="green"> Attempting to start child ('.$client.
1689: ")</font>");
1.1 albertel 1690: # block signal for fork
1691: $sigset = POSIX::SigSet->new(SIGINT);
1692: sigprocmask(SIG_BLOCK, $sigset)
1.29 harris41 1693: or die "Can't block SIGINT for fork: $!\n";
1.134 albertel 1694:
1.29 harris41 1695: die "fork: $!" unless defined ($pid = fork);
1.148 foxr 1696:
1697: $client->sockopt(SO_KEEPALIVE, 1); # Enable monitoring of
1698: # connection liveness.
1699:
1700: #
1701: # Figure out who we're talking to so we can record the peer in
1702: # the pid hash.
1703: #
1704: my $caller = getpeername($client);
1.180 albertel 1705: my ($port,$iaddr);
1706: if (defined($caller) && length($caller) > 0) {
1707: ($port,$iaddr)=unpack_sockaddr_in($caller);
1708: } else {
1709: &logthis("Unable to determine who caller was, getpeername returned nothing");
1710: }
1711: if (defined($iaddr)) {
1.200 matthew 1712: $clientip = inet_ntoa($iaddr);
1713: Debug("Connected with $clientip");
1714: $clientdns = gethostbyaddr($iaddr, AF_INET);
1715: Debug("Connected with $clientdns by name");
1.180 albertel 1716: } else {
1.200 matthew 1717: &logthis("Unable to determine clientip");
1.180 albertel 1718: $clientip='Unavailable';
1719: }
1.1 albertel 1720:
1721: if ($pid) {
1722: # Parent records the child's birth and returns.
1723: sigprocmask(SIG_UNBLOCK, $sigset)
1.29 harris41 1724: or die "Can't unblock SIGINT for fork: $!\n";
1.148 foxr 1725: $children{$pid} = $clientip;
1.57 www 1726: &status('Started child '.$pid);
1.1 albertel 1727: return;
1728: } else {
1729: # Child can *not* return from this subroutine.
1730: $SIG{INT} = 'DEFAULT'; # make SIGINT kill us as it did before
1.126 albertel 1731: $SIG{CHLD} = 'DEFAULT'; #make this default so that pwauth returns
1732: #don't get intercepted
1.57 www 1733: $SIG{USR1}= \&logstatus;
1.63 www 1734: $SIG{ALRM}= \&timeout;
1.57 www 1735: $lastlog='Forked ';
1736: $status='Forked';
1737:
1.1 albertel 1738: # unblock signals
1739: sigprocmask(SIG_UNBLOCK, $sigset)
1.29 harris41 1740: or die "Can't unblock SIGINT for fork: $!\n";
1.13 www 1741:
1.207 ! foxr 1742: # my $tmpsnum=0; # Now global
1.178 foxr 1743: #---------------------------------------------------- kerberos 5 initialization
1.91 albertel 1744: &Authen::Krb5::init_context();
1745: &Authen::Krb5::init_ets();
1746:
1.161 foxr 1747: &status('Accepted connection');
1.1 albertel 1748: # =============================================================================
1749: # do something with the connection
1750: # -----------------------------------------------------------------------------
1.200 matthew 1751: # see if we know client and 'check' for spoof IP by ineffective challenge
1.148 foxr 1752:
1.161 foxr 1753: ReadManagerTable; # May also be a manager!!
1754:
1755: my $clientrec=($hostid{$clientip} ne undef);
1756: my $ismanager=($managers{$clientip} ne undef);
1757: $clientname = "[unknonwn]";
1758: if($clientrec) { # Establish client type.
1759: $ConnectionType = "client";
1760: $clientname = $hostid{$clientip};
1761: if($ismanager) {
1762: $ConnectionType = "both";
1763: }
1764: } else {
1765: $ConnectionType = "manager";
1766: $clientname = $managers{$clientip};
1767: }
1768: my $clientok;
1.200 matthew 1769:
1.161 foxr 1770: if ($clientrec || $ismanager) {
1771: &status("Waiting for init from $clientip $clientname");
1772: &logthis('<font color="yellow">INFO: Connection, '.
1773: $clientip.
1774: " ($clientname) connection type = $ConnectionType </font>" );
1775: &status("Connecting $clientip ($clientname))");
1776: my $remotereq=<$client>;
1.200 matthew 1777: chomp($remotereq);
1778: Debug("Got init: $remotereq");
1779: my $inikeyword = split(/:/, $remotereq);
1.161 foxr 1780: if ($remotereq =~ /^init/) {
1781: &sethost("sethost:$perlvar{'lonHostID'}");
1.200 matthew 1782: #
1783: # If the remote is attempting a local init... give that a try:
1784: #
1785: my ($i, $inittype) = split(/:/, $remotereq);
1786:
1787: # If the connection type is ssl, but I didn't get my
1788: # certificate files yet, then I'll drop back to
1789: # insecure (if allowed).
1790:
1791: if($inittype eq "ssl") {
1792: my ($ca, $cert) = lonssl::CertificateFile;
1793: my $kfile = lonssl::KeyFile;
1794: if((!$ca) ||
1795: (!$cert) ||
1796: (!$kfile)) {
1797: $inittype = ""; # This forces insecure attempt.
1798: &logthis("<font color=\"blue\"> Certificates not "
1799: ."installed -- trying insecure auth</font>");
1800: }
1801: else { # SSL certificates are in place so
1802: } # Leave the inittype alone.
1803: }
1804:
1805: if($inittype eq "local") {
1806: my $key = LocalConnection($client, $remotereq);
1807: if($key) {
1808: Debug("Got local key $key");
1809: $clientok = 1;
1810: my $cipherkey = pack("H32", $key);
1811: $cipher = new IDEA($cipherkey);
1812: print $client "ok:local\n";
1813: &logthis('<font color="green"'
1814: . "Successful local authentication </font>");
1815: $keymode = "local"
1816: } else {
1817: Debug("Failed to get local key");
1818: $clientok = 0;
1819: shutdown($client, 3);
1820: close $client;
1821: }
1822: } elsif ($inittype eq "ssl") {
1823: my $key = SSLConnection($client);
1824: if ($key) {
1825: $clientok = 1;
1826: my $cipherkey = pack("H32", $key);
1827: $cipher = new IDEA($cipherkey);
1828: &logthis('<font color="green">'
1829: ."Successfull ssl authentication with $clientname </font>");
1830: $keymode = "ssl";
1831:
1832: } else {
1833: $clientok = 0;
1834: close $client;
1835: }
1836:
1.161 foxr 1837: } else {
1.200 matthew 1838: my $ok = InsecureConnection($client);
1839: if($ok) {
1840: $clientok = 1;
1841: &logthis('<font color="green">'
1842: ."Successful insecure authentication with $clientname </font>");
1843: print $client "ok\n";
1844: $keymode = "insecure";
1845: } else {
1846: &logthis('<font color="yellow">'
1847: ."Attempted insecure connection disallowed </font>");
1848: close $client;
1849: $clientok = 0;
1850:
1851: }
1.161 foxr 1852: }
1.2 www 1853: } else {
1.161 foxr 1854: &logthis(
1.190 albertel 1855: "<font color='blue'>WARNING: "
1.161 foxr 1856: ."$clientip failed to initialize: >$remotereq< </font>");
1857: &status('No init '.$clientip);
1858: }
1.200 matthew 1859:
1.161 foxr 1860: } else {
1861: &logthis(
1.190 albertel 1862: "<font color='blue'>WARNING: Unknown client $clientip</font>");
1.161 foxr 1863: &status('Hung up on '.$clientip);
1864: }
1.200 matthew 1865:
1.161 foxr 1866: if ($clientok) {
1.1 albertel 1867: # ---------------- New known client connecting, could mean machine online again
1.161 foxr 1868:
1869: foreach my $id (keys(%hostip)) {
1870: if ($hostip{$id} ne $clientip ||
1871: $hostip{$currenthostid} eq $clientip) {
1872: # no need to try to do recon's to myself
1873: next;
1.115 albertel 1874: }
1.161 foxr 1875: &reconlonc("$perlvar{'lonSockDir'}/$id");
1876: }
1.190 albertel 1877: &logthis("<font color='green'>Established connection: $clientname</font>");
1.161 foxr 1878: &status('Will listen to '.$clientname);
1.178 foxr 1879: # ------------------------------------------------------------ Process requests
1880: while (my $userinput=<$client>) {
1881: chomp($userinput);
1882: Debug("Request = $userinput\n");
1883: &status('Processing '.$clientname.': '.$userinput);
1884: my $wasenc=0;
1885: alarm(120);
1886: # ------------------------------------------------------------ See if encrypted
1887: if ($userinput =~ /^enc/) {
1888: if ($cipher) {
1889: my ($cmd,$cmdlength,$encinput)=split(/:/,$userinput);
1890: $userinput='';
1891: for (my $encidx=0;$encidx<length($encinput);$encidx+=16) {
1892: $userinput.=
1893: $cipher->decrypt(
1894: pack("H16",substr($encinput,$encidx,16))
1895: );
1896: }
1897: $userinput=substr($userinput,0,$cmdlength);
1898: $wasenc=1;
1899: }
1900: }
1901:
1902: # ------------------------------------------------------------- Normal commands
1903: # ------------------------------------------------------------------------ ping
1904: if ($userinput =~ /^ping/) { # client only
1905: if(isClient) {
1906: print $client "$currenthostid\n";
1907: } else {
1908: Reply($client, "refused\n", $userinput);
1909: }
1910: # ------------------------------------------------------------------------ pong
1911: }elsif ($userinput =~ /^pong/) { # client only
1912: if(isClient) {
1913: my $reply=&reply("ping",$clientname);
1914: print $client "$currenthostid:$reply\n";
1915: } else {
1916: Reply($client, "refused\n", $userinput);
1917: }
1918: # ------------------------------------------------------------------------ ekey
1919: } elsif ($userinput =~ /^ekey/) { # ok for both clients & mgrs
1920: my $buildkey=time.$$.int(rand 100000);
1921: $buildkey=~tr/1-6/A-F/;
1922: $buildkey=int(rand 100000).$buildkey.int(rand 100000);
1923: my $key=$currenthostid.$clientname;
1924: $key=~tr/a-z/A-Z/;
1925: $key=~tr/G-P/0-9/;
1926: $key=~tr/Q-Z/0-9/;
1927: $key=$key.$buildkey.$key.$buildkey.$key.$buildkey;
1928: $key=substr($key,0,32);
1929: my $cipherkey=pack("H32",$key);
1930: $cipher=new IDEA $cipherkey;
1931: print $client "$buildkey\n";
1932: # ------------------------------------------------------------------------ load
1933: } elsif ($userinput =~ /^load/) { # client only
1934: if (isClient) {
1935: my $loadavg;
1936: {
1937: my $loadfile=IO::File->new('/proc/loadavg');
1938: $loadavg=<$loadfile>;
1939: }
1940: $loadavg =~ s/\s.*//g;
1941: my $loadpercent=100*$loadavg/$perlvar{'lonLoadLim'};
1942: print $client "$loadpercent\n";
1943: } else {
1944: Reply($client, "refused\n", $userinput);
1945:
1946: }
1947: # -------------------------------------------------------------------- userload
1948: } elsif ($userinput =~ /^userload/) { # client only
1949: if(isClient) {
1950: my $userloadpercent=&userload();
1951: print $client "$userloadpercent\n";
1952: } else {
1953: Reply($client, "refused\n", $userinput);
1954:
1955: }
1956: #
1957: # Transactions requiring encryption:
1958: #
1959: # ----------------------------------------------------------------- currentauth
1960: } elsif ($userinput =~ /^currentauth/) {
1961: if (($wasenc==1) && isClient) { # Encoded & client only.
1962: my ($cmd,$udom,$uname)=split(/:/,$userinput);
1963: my $result = GetAuthType($udom, $uname);
1964: if($result eq "nouser") {
1965: print $client "unknown_user\n";
1966: }
1967: else {
1968: print $client "$result\n"
1969: }
1970: } else {
1971: Reply($client, "refused\n", $userinput);
1972:
1973: }
1974: #--------------------------------------------------------------------- pushfile
1975: } elsif($userinput =~ /^pushfile/) { # encoded & manager.
1976: if(($wasenc == 1) && isManager) {
1977: my $cert = GetCertificate($userinput);
1978: if(ValidManager($cert)) {
1979: my $reply = PushFile($userinput);
1980: print $client "$reply\n";
1981: } else {
1982: print $client "refused\n";
1983: }
1984: } else {
1985: Reply($client, "refused\n", $userinput);
1986:
1987: }
1988: #--------------------------------------------------------------------- reinit
1989: } elsif($userinput =~ /^reinit/) { # Encoded and manager
1990: if (($wasenc == 1) && isManager) {
1991: my $cert = GetCertificate($userinput);
1992: if(ValidManager($cert)) {
1993: chomp($userinput);
1994: my $reply = ReinitProcess($userinput);
1995: print $client "$reply\n";
1996: } else {
1997: print $client "refused\n";
1998: }
1999: } else {
2000: Reply($client, "refused\n", $userinput);
2001: }
2002: #------------------------------------------------------------------------- edit
2003: } elsif ($userinput =~ /^edit/) { # encoded and manager:
2004: if(($wasenc ==1) && (isManager)) {
2005: my $cert = GetCertificate($userinput);
2006: if(ValidManager($cert)) {
2007: my($command, $filetype, $script) = split(/:/, $userinput);
2008: if (($filetype eq "hosts") || ($filetype eq "domain")) {
2009: if($script ne "") {
2010: Reply($client, EditFile($userinput));
2011: } else {
2012: Reply($client,"refused\n",$userinput);
2013: }
2014: } else {
2015: Reply($client,"refused\n",$userinput);
2016: }
2017: } else {
2018: Reply($client,"refused\n",$userinput);
2019: }
2020: } else {
2021: Reply($client,"refused\n",$userinput);
2022: }
2023: # ------------------------------------------------------------------------ auth
2024: } elsif ($userinput =~ /^auth/) { # Encoded and client only.
2025: if (($wasenc==1) && isClient) {
2026: my ($cmd,$udom,$uname,$upass)=split(/:/,$userinput);
2027: chomp($upass);
2028: $upass=unescape($upass);
2029: my $proname=propath($udom,$uname);
2030: my $passfilename="$proname/passwd";
2031: if (-e $passfilename) {
2032: my $pf = IO::File->new($passfilename);
2033: my $realpasswd=<$pf>;
2034: chomp($realpasswd);
2035: my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
2036: my $pwdcorrect=0;
2037: if ($howpwd eq 'internal') {
2038: &Debug("Internal auth");
2039: $pwdcorrect=
2040: (crypt($upass,$contentpwd) eq $contentpwd);
2041: } elsif ($howpwd eq 'unix') {
2042: &Debug("Unix auth");
2043: if((getpwnam($uname))[1] eq "") { #no such user!
2044: $pwdcorrect = 0;
2045: } else {
2046: $contentpwd=(getpwnam($uname))[1];
2047: my $pwauth_path="/usr/local/sbin/pwauth";
2048: unless ($contentpwd eq 'x') {
2049: $pwdcorrect=
2050: (crypt($upass,$contentpwd) eq
2051: $contentpwd);
2052: }
2053:
2054: elsif (-e $pwauth_path) {
2055: open PWAUTH, "|$pwauth_path" or
2056: die "Cannot invoke authentication";
2057: print PWAUTH "$uname\n$upass\n";
2058: close PWAUTH;
2059: $pwdcorrect=!$?;
2060: }
2061: }
2062: } elsif ($howpwd eq 'krb4') {
2063: my $null=pack("C",0);
2064: unless ($upass=~/$null/) {
2065: my $krb4_error = &Authen::Krb4::get_pw_in_tkt
2066: ($uname,"",$contentpwd,'krbtgt',
2067: $contentpwd,1,$upass);
2068: if (!$krb4_error) {
2069: $pwdcorrect = 1;
2070: } else {
2071: $pwdcorrect=0;
2072: # log error if it is not a bad password
2073: if ($krb4_error != 62) {
1.191 albertel 2074: &logthis('krb4:'.$uname.','.
1.178 foxr 2075: &Authen::Krb4::get_err_txt($Authen::Krb4::error));
2076: }
2077: }
2078: }
2079: } elsif ($howpwd eq 'krb5') {
2080: my $null=pack("C",0);
2081: unless ($upass=~/$null/) {
2082: my $krbclient=&Authen::Krb5::parse_name($uname.'@'.$contentpwd);
2083: my $krbservice="krbtgt/".$contentpwd."\@".$contentpwd;
2084: my $krbserver=&Authen::Krb5::parse_name($krbservice);
2085: my $credentials=&Authen::Krb5::cc_default();
2086: $credentials->initialize($krbclient);
2087: my $krbreturn =
2088: &Authen::Krb5::get_in_tkt_with_password(
2089: $krbclient,$krbserver,$upass,$credentials);
2090: # unless ($krbreturn) {
2091: # &logthis("Krb5 Error: ".
2092: # &Authen::Krb5::error());
2093: # }
2094: $pwdcorrect = ($krbreturn == 1);
2095: } else { $pwdcorrect=0; }
2096: } elsif ($howpwd eq 'localauth') {
2097: $pwdcorrect=&localauth::localauth($uname,$upass,
2098: $contentpwd);
2099: }
2100: if ($pwdcorrect) {
2101: print $client "authorized\n";
2102: } else {
2103: print $client "non_authorized\n";
2104: }
2105: } else {
2106: print $client "unknown_user\n";
2107: }
2108: } else {
2109: Reply($client, "refused\n", $userinput);
2110:
2111: }
2112: # ---------------------------------------------------------------------- passwd
2113: } elsif ($userinput =~ /^passwd/) { # encoded and client
2114: if (($wasenc==1) && isClient) {
2115: my
2116: ($cmd,$udom,$uname,$upass,$npass)=split(/:/,$userinput);
2117: chomp($npass);
2118: $upass=&unescape($upass);
2119: $npass=&unescape($npass);
2120: &Debug("Trying to change password for $uname");
2121: my $proname=propath($udom,$uname);
2122: my $passfilename="$proname/passwd";
2123: if (-e $passfilename) {
2124: my $realpasswd;
2125: { my $pf = IO::File->new($passfilename);
2126: $realpasswd=<$pf>; }
2127: chomp($realpasswd);
2128: my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
2129: if ($howpwd eq 'internal') {
2130: &Debug("internal auth");
2131: if (crypt($upass,$contentpwd) eq $contentpwd) {
2132: my $salt=time;
2133: $salt=substr($salt,6,2);
2134: my $ncpass=crypt($npass,$salt);
2135: {
2136: my $pf;
2137: if ($pf = IO::File->new(">$passfilename")) {
2138: print $pf "internal:$ncpass\n";
2139: &logthis("Result of password change for $uname: pwchange_success");
2140: print $client "ok\n";
2141: } else {
2142: &logthis("Unable to open $uname passwd to change password");
2143: print $client "non_authorized\n";
2144: }
2145: }
2146:
2147: } else {
2148: print $client "non_authorized\n";
2149: }
2150: } elsif ($howpwd eq 'unix') {
2151: # Unix means we have to access /etc/password
2152: # one way or another.
2153: # First: Make sure the current password is
2154: # correct
2155: &Debug("auth is unix");
2156: $contentpwd=(getpwnam($uname))[1];
2157: my $pwdcorrect = "0";
2158: my $pwauth_path="/usr/local/sbin/pwauth";
2159: unless ($contentpwd eq 'x') {
2160: $pwdcorrect=
2161: (crypt($upass,$contentpwd) eq $contentpwd);
2162: } elsif (-e $pwauth_path) {
2163: open PWAUTH, "|$pwauth_path" or
2164: die "Cannot invoke authentication";
2165: print PWAUTH "$uname\n$upass\n";
2166: close PWAUTH;
2167: &Debug("exited pwauth with $? ($uname,$upass) ");
2168: $pwdcorrect=($? == 0);
2169: }
2170: if ($pwdcorrect) {
2171: my $execdir=$perlvar{'lonDaemons'};
2172: &Debug("Opening lcpasswd pipeline");
2173: my $pf = IO::File->new("|$execdir/lcpasswd > $perlvar{'lonDaemons'}/logs/lcpasswd.log");
2174: print $pf "$uname\n$npass\n$npass\n";
2175: close $pf;
2176: my $err = $?;
2177: my $result = ($err>0 ? 'pwchange_failure'
2178: : 'ok');
2179: &logthis("Result of password change for $uname: ".
2180: &lcpasswdstrerror($?));
2181: print $client "$result\n";
2182: } else {
2183: print $client "non_authorized\n";
2184: }
2185: } else {
2186: print $client "auth_mode_error\n";
2187: }
2188: } else {
2189: print $client "unknown_user\n";
2190: }
2191: } else {
2192: Reply($client, "refused\n", $userinput);
2193:
2194: }
2195: # -------------------------------------------------------------------- makeuser
2196: } elsif ($userinput =~ /^makeuser/) { # encoded and client.
2197: &Debug("Make user received");
2198: my $oldumask=umask(0077);
2199: if (($wasenc==1) && isClient) {
2200: my
2201: ($cmd,$udom,$uname,$umode,$npass)=split(/:/,$userinput);
2202: &Debug("cmd =".$cmd." $udom =".$udom.
2203: " uname=".$uname);
2204: chomp($npass);
2205: $npass=&unescape($npass);
2206: my $proname=propath($udom,$uname);
2207: my $passfilename="$proname/passwd";
2208: &Debug("Password file created will be:".
2209: $passfilename);
2210: if (-e $passfilename) {
2211: print $client "already_exists\n";
2212: } elsif ($udom ne $currentdomainid) {
2213: print $client "not_right_domain\n";
2214: } else {
2215: my @fpparts=split(/\//,$proname);
2216: my $fpnow=$fpparts[0].'/'.$fpparts[1].'/'.$fpparts[2];
2217: my $fperror='';
2218: for (my $i=3;$i<=$#fpparts;$i++) {
2219: $fpnow.='/'.$fpparts[$i];
2220: unless (-e $fpnow) {
2221: unless (mkdir($fpnow,0777)) {
2222: $fperror="error: ".($!+0)
2223: ." mkdir failed while attempting "
2224: ."makeuser";
2225: }
2226: }
2227: }
2228: unless ($fperror) {
2229: my $result=&make_passwd_file($uname, $umode,$npass,
2230: $passfilename);
2231: print $client $result;
2232: } else {
2233: print $client "$fperror\n";
2234: }
2235: }
2236: } else {
2237: Reply($client, "refused\n", $userinput);
2238:
2239: }
2240: umask($oldumask);
2241: # -------------------------------------------------------------- changeuserauth
2242: } elsif ($userinput =~ /^changeuserauth/) { # encoded & client
2243: &Debug("Changing authorization");
2244: if (($wasenc==1) && isClient) {
2245: my
2246: ($cmd,$udom,$uname,$umode,$npass)=split(/:/,$userinput);
2247: chomp($npass);
2248: &Debug("cmd = ".$cmd." domain= ".$udom.
2249: "uname =".$uname." umode= ".$umode);
2250: $npass=&unescape($npass);
2251: my $proname=&propath($udom,$uname);
2252: my $passfilename="$proname/passwd";
2253: if ($udom ne $currentdomainid) {
2254: print $client "not_right_domain\n";
2255: } else {
2256: my $result=&make_passwd_file($uname, $umode,$npass,
2257: $passfilename);
2258: print $client $result;
2259: }
2260: } else {
2261: Reply($client, "refused\n", $userinput);
2262:
2263: }
2264: # ------------------------------------------------------------------------ home
2265: } elsif ($userinput =~ /^home/) { # client clear or encoded
2266: if(isClient) {
2267: my ($cmd,$udom,$uname)=split(/:/,$userinput);
2268: chomp($uname);
2269: my $proname=propath($udom,$uname);
2270: if (-e $proname) {
2271: print $client "found\n";
2272: } else {
2273: print $client "not_found\n";
2274: }
2275: } else {
2276: Reply($client, "refused\n", $userinput);
2277:
2278: }
2279: # ---------------------------------------------------------------------- update
2280: } elsif ($userinput =~ /^update/) { # client clear or encoded.
2281: if(isClient) {
2282: my ($cmd,$fname)=split(/:/,$userinput);
2283: my $ownership=ishome($fname);
2284: if ($ownership eq 'not_owner') {
2285: if (-e $fname) {
2286: my ($dev,$ino,$mode,$nlink,
2287: $uid,$gid,$rdev,$size,
2288: $atime,$mtime,$ctime,
2289: $blksize,$blocks)=stat($fname);
2290: my $now=time;
2291: my $since=$now-$atime;
2292: if ($since>$perlvar{'lonExpire'}) {
2293: my $reply=
2294: &reply("unsub:$fname","$clientname");
2295: unlink("$fname");
2296: } else {
2297: my $transname="$fname.in.transfer";
2298: my $remoteurl=
2299: &reply("sub:$fname","$clientname");
2300: my $response;
2301: {
2302: my $ua=new LWP::UserAgent;
2303: my $request=new HTTP::Request('GET',"$remoteurl");
2304: $response=$ua->request($request,$transname);
2305: }
2306: if ($response->is_error()) {
2307: unlink($transname);
2308: my $message=$response->status_line;
2309: &logthis(
2310: "LWP GET: $message for $fname ($remoteurl)");
2311: } else {
2312: if ($remoteurl!~/\.meta$/) {
2313: my $ua=new LWP::UserAgent;
2314: my $mrequest=
2315: new HTTP::Request('GET',$remoteurl.'.meta');
2316: my $mresponse=
2317: $ua->request($mrequest,$fname.'.meta');
2318: if ($mresponse->is_error()) {
2319: unlink($fname.'.meta');
2320: }
2321: }
2322: rename($transname,$fname);
2323: }
2324: }
2325: print $client "ok\n";
2326: } else {
2327: print $client "not_found\n";
2328: }
2329: } else {
2330: print $client "rejected\n";
2331: }
2332: } else {
2333: Reply($client, "refused\n", $userinput);
2334:
2335: }
2336: # -------------------------------------- fetch a user file from a remote server
2337: } elsif ($userinput =~ /^fetchuserfile/) { # Client clear or enc.
2338: if(isClient) {
1.184 raeburn 2339: my ($cmd,$fname)=split(/:/,$userinput);
1.185 albertel 2340: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
1.178 foxr 2341: my $udir=propath($udom,$uname).'/userfiles';
2342: unless (-e $udir) { mkdir($udir,0770); }
2343: if (-e $udir) {
1.184 raeburn 2344: $ufile=~s/^[\.\~]+//;
2345: my $path = $udir;
1.185 albertel 2346: if ($ufile =~m|(.+)/([^/]+)$|) {
2347: my @parts=split('/',$1);
1.184 raeburn 2348: foreach my $part (@parts) {
2349: $path .= '/'.$part;
2350: if ((-e $path)!=1) {
2351: mkdir($path,0770);
1.182 raeburn 2352: }
2353: }
2354: }
1.184 raeburn 2355: my $destname=$udir.'/'.$ufile;
2356: my $transname=$udir.'/'.$ufile.'.in.transit';
2357: my $remoteurl='http://'.$clientip.'/userfiles/'.$fname;
1.178 foxr 2358: my $response;
2359: {
2360: my $ua=new LWP::UserAgent;
2361: my $request=new HTTP::Request('GET',"$remoteurl");
2362: $response=$ua->request($request,$transname);
2363: }
2364: if ($response->is_error()) {
2365: unlink($transname);
2366: my $message=$response->status_line;
1.184 raeburn 2367: &logthis("LWP GET: $message for $fname ($remoteurl)");
1.178 foxr 2368: print $client "failed\n";
2369: } else {
2370: if (!rename($transname,$destname)) {
2371: &logthis("Unable to move $transname to $destname");
2372: unlink($transname);
2373: print $client "failed\n";
2374: } else {
2375: print $client "ok\n";
2376: }
2377: }
2378: } else {
2379: print $client "not_home\n";
1.187 albertel 2380: }
2381: } else {
2382: Reply($client, "refused\n", $userinput);
2383: }
2384: # --------------------------------------------------------- remove a user file
2385: } elsif ($userinput =~ /^removeuserfile/) { # Client clear or enc.
2386: if(isClient) {
2387: my ($cmd,$fname)=split(/:/,$userinput);
2388: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
2389: &logthis("$udom - $uname - $ufile");
2390: if ($ufile =~m|/\.\./|) {
2391: # any files paths with /../ in them refuse
2392: # to deal with
2393: print $client "refused\n";
2394: } else {
2395: my $udir=propath($udom,$uname);
2396: if (-e $udir) {
2397: my $file=$udir.'/userfiles/'.$ufile;
2398: if (-e $file) {
2399: unlink($file);
2400: if (-e $file) {
2401: print $client "failed\n";
2402: } else {
2403: print $client "ok\n";
2404: }
2405: } else {
2406: print $client "not_found\n";
2407: }
2408: } else {
2409: print $client "not_home\n";
2410: }
1.178 foxr 2411: }
2412: } else {
2413: Reply($client, "refused\n", $userinput);
2414: }
2415: # ------------------------------------------ authenticate access to a user file
2416: } elsif ($userinput =~ /^tokenauthuserfile/) { # Client only
2417: if(isClient) {
2418: my ($cmd,$fname,$session)=split(/:/,$userinput);
2419: chomp($session);
2420: my $reply='non_auth';
2421: if (open(ENVIN,$perlvar{'lonIDsDir'}.'/'.
2422: $session.'.id')) {
2423: while (my $line=<ENVIN>) {
1.185 albertel 2424: if ($line=~ m|userfile\.\Q$fname\E\=|) { $reply='ok'; }
1.178 foxr 2425: }
2426: close(ENVIN);
2427: print $client $reply."\n";
2428: } else {
2429: print $client "invalid_token\n";
2430: }
2431: } else {
2432: Reply($client, "refused\n", $userinput);
2433:
2434: }
2435: # ----------------------------------------------------------------- unsubscribe
2436: } elsif ($userinput =~ /^unsub/) {
2437: if(isClient) {
2438: my ($cmd,$fname)=split(/:/,$userinput);
2439: if (-e $fname) {
1.188 foxr 2440: print $client &unsub($fname,$clientip);
1.178 foxr 2441: } else {
2442: print $client "not_found\n";
2443: }
2444: } else {
2445: Reply($client, "refused\n", $userinput);
2446:
2447: }
2448: # ------------------------------------------------------------------- subscribe
2449: } elsif ($userinput =~ /^sub/) {
2450: if(isClient) {
2451: print $client &subscribe($userinput,$clientip);
2452: } else {
2453: Reply($client, "refused\n", $userinput);
2454:
2455: }
2456: # ------------------------------------------------------------- current version
2457: } elsif ($userinput =~ /^currentversion/) {
2458: if(isClient) {
2459: my ($cmd,$fname)=split(/:/,$userinput);
2460: print $client ¤tversion($fname)."\n";
2461: } else {
2462: Reply($client, "refused\n", $userinput);
2463:
2464: }
2465: # ------------------------------------------------------------------------- log
2466: } elsif ($userinput =~ /^log/) {
2467: if(isClient) {
2468: my ($cmd,$udom,$uname,$what)=split(/:/,$userinput);
2469: chomp($what);
2470: my $proname=propath($udom,$uname);
2471: my $now=time;
2472: {
2473: my $hfh;
2474: if ($hfh=IO::File->new(">>$proname/activity.log")) {
2475: print $hfh "$now:$clientname:$what\n";
2476: print $client "ok\n";
2477: } else {
2478: print $client "error: ".($!+0)
2479: ." IO::File->new Failed "
2480: ."while attempting log\n";
2481: }
2482: }
2483: } else {
2484: Reply($client, "refused\n", $userinput);
2485:
2486: }
2487: # ------------------------------------------------------------------------- put
2488: } elsif ($userinput =~ /^put/) {
2489: if(isClient) {
1.206 raeburn 2490: my ($cmd,$udom,$uname,$namespace,$what,@extras)
1.178 foxr 2491: =split(/:/,$userinput);
2492: $namespace=~s/\//\_/g;
2493: $namespace=~s/\W//g;
2494: if ($namespace ne 'roles') {
1.206 raeburn 2495: if (@extras) {
2496: $what .= ':'.join(':',@extras);
2497: }
1.178 foxr 2498: chomp($what);
2499: my $proname=propath($udom,$uname);
2500: my $now=time;
2501: unless ($namespace=~/^nohist\_/) {
2502: my $hfh;
2503: if (
2504: $hfh=IO::File->new(">>$proname/$namespace.hist")
2505: ) { print $hfh "P:$now:$what\n"; }
2506: }
2507: my @pairs=split(/\&/,$what);
2508: my %hash;
2509: if (tie(%hash,'GDBM_File',
2510: "$proname/$namespace.db",
2511: &GDBM_WRCREAT(),0640)) {
2512: foreach my $pair (@pairs) {
2513: my ($key,$value)=split(/=/,$pair);
2514: $hash{$key}=$value;
2515: }
2516: if (untie(%hash)) {
2517: print $client "ok\n";
2518: } else {
2519: print $client "error: ".($!+0)
2520: ." untie(GDBM) failed ".
2521: "while attempting put\n";
2522: }
2523: } else {
2524: print $client "error: ".($!)
2525: ." tie(GDBM) Failed ".
2526: "while attempting put\n";
2527: }
2528: } else {
2529: print $client "refused\n";
2530: }
2531: } else {
2532: Reply($client, "refused\n", $userinput);
2533:
2534: }
2535: # ------------------------------------------------------------------- inc
2536: } elsif ($userinput =~ /^inc:/) {
2537: if(isClient) {
2538: my ($cmd,$udom,$uname,$namespace,$what)
2539: =split(/:/,$userinput);
2540: $namespace=~s/\//\_/g;
2541: $namespace=~s/\W//g;
2542: if ($namespace ne 'roles') {
2543: chomp($what);
2544: my $proname=propath($udom,$uname);
2545: my $now=time;
2546: unless ($namespace=~/^nohist\_/) {
2547: my $hfh;
2548: if (
2549: $hfh=IO::File->new(">>$proname/$namespace.hist")
2550: ) { print $hfh "P:$now:$what\n"; }
2551: }
2552: my @pairs=split(/\&/,$what);
2553: my %hash;
2554: if (tie(%hash,'GDBM_File',
2555: "$proname/$namespace.db",
2556: &GDBM_WRCREAT(),0640)) {
2557: foreach my $pair (@pairs) {
2558: my ($key,$value)=split(/=/,$pair);
2559: # We could check that we have a number...
2560: if (! defined($value) || $value eq '') {
2561: $value = 1;
2562: }
2563: $hash{$key}+=$value;
2564: }
2565: if (untie(%hash)) {
2566: print $client "ok\n";
2567: } else {
2568: print $client "error: ".($!+0)
2569: ." untie(GDBM) failed ".
1.181 albertel 2570: "while attempting inc\n";
1.178 foxr 2571: }
2572: } else {
2573: print $client "error: ".($!)
2574: ." tie(GDBM) Failed ".
1.181 albertel 2575: "while attempting inc\n";
1.178 foxr 2576: }
2577: } else {
2578: print $client "refused\n";
2579: }
2580: } else {
2581: Reply($client, "refused\n", $userinput);
2582:
2583: }
2584: # -------------------------------------------------------------------- rolesput
2585: } elsif ($userinput =~ /^rolesput/) {
2586: if(isClient) {
2587: &Debug("rolesput");
2588: if ($wasenc==1) {
2589: my ($cmd,$exedom,$exeuser,$udom,$uname,$what)
2590: =split(/:/,$userinput);
2591: &Debug("cmd = ".$cmd." exedom= ".$exedom.
2592: "user = ".$exeuser." udom=".$udom.
2593: "what = ".$what);
2594: my $namespace='roles';
2595: chomp($what);
2596: my $proname=propath($udom,$uname);
2597: my $now=time;
2598: {
2599: my $hfh;
2600: if (
2601: $hfh=IO::File->new(">>$proname/$namespace.hist")
2602: ) {
2603: print $hfh "P:$now:$exedom:$exeuser:$what\n";
2604: }
2605: }
2606: my @pairs=split(/\&/,$what);
2607: my %hash;
2608: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT(),0640)) {
2609: foreach my $pair (@pairs) {
2610: my ($key,$value)=split(/=/,$pair);
2611: &ManagePermissions($key, $udom, $uname,
2612: &GetAuthType( $udom,
2613: $uname));
2614: $hash{$key}=$value;
2615: }
2616: if (untie(%hash)) {
2617: print $client "ok\n";
2618: } else {
2619: print $client "error: ".($!+0)
2620: ." untie(GDBM) Failed ".
2621: "while attempting rolesput\n";
2622: }
2623: } else {
2624: print $client "error: ".($!+0)
2625: ." tie(GDBM) Failed ".
2626: "while attempting rolesput\n";
2627: }
2628: } else {
2629: print $client "refused\n";
2630: }
2631: } else {
2632: Reply($client, "refused\n", $userinput);
2633:
2634: }
2635: # -------------------------------------------------------------------- rolesdel
2636: } elsif ($userinput =~ /^rolesdel/) {
2637: if(isClient) {
2638: &Debug("rolesdel");
2639: if ($wasenc==1) {
2640: my ($cmd,$exedom,$exeuser,$udom,$uname,$what)
2641: =split(/:/,$userinput);
2642: &Debug("cmd = ".$cmd." exedom= ".$exedom.
2643: "user = ".$exeuser." udom=".$udom.
2644: "what = ".$what);
2645: my $namespace='roles';
2646: chomp($what);
2647: my $proname=propath($udom,$uname);
2648: my $now=time;
2649: {
2650: my $hfh;
2651: if (
2652: $hfh=IO::File->new(">>$proname/$namespace.hist")
2653: ) {
2654: print $hfh "D:$now:$exedom:$exeuser:$what\n";
2655: }
2656: }
2657: my @rolekeys=split(/\&/,$what);
2658: my %hash;
2659: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT(),0640)) {
2660: foreach my $key (@rolekeys) {
2661: delete $hash{$key};
2662: }
2663: if (untie(%hash)) {
2664: print $client "ok\n";
2665: } else {
2666: print $client "error: ".($!+0)
2667: ." untie(GDBM) Failed ".
2668: "while attempting rolesdel\n";
2669: }
2670: } else {
2671: print $client "error: ".($!+0)
2672: ." tie(GDBM) Failed ".
2673: "while attempting rolesdel\n";
2674: }
2675: } else {
2676: print $client "refused\n";
2677: }
2678: } else {
2679: Reply($client, "refused\n", $userinput);
2680:
2681: }
2682: # ------------------------------------------------------------------------- get
2683: } elsif ($userinput =~ /^get/) {
2684: if(isClient) {
2685: my ($cmd,$udom,$uname,$namespace,$what)
2686: =split(/:/,$userinput);
2687: $namespace=~s/\//\_/g;
2688: $namespace=~s/\W//g;
2689: chomp($what);
2690: my @queries=split(/\&/,$what);
2691: my $proname=propath($udom,$uname);
2692: my $qresult='';
2693: my %hash;
2694: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER(),0640)) {
2695: for (my $i=0;$i<=$#queries;$i++) {
2696: $qresult.="$hash{$queries[$i]}&";
2697: }
2698: if (untie(%hash)) {
2699: $qresult=~s/\&$//;
2700: print $client "$qresult\n";
2701: } else {
2702: print $client "error: ".($!+0)
2703: ." untie(GDBM) Failed ".
2704: "while attempting get\n";
2705: }
2706: } else {
2707: if ($!+0 == 2) {
2708: print $client "error:No such file or ".
2709: "GDBM reported bad block error\n";
2710: } else {
2711: print $client "error: ".($!+0)
2712: ." tie(GDBM) Failed ".
2713: "while attempting get\n";
2714: }
2715: }
2716: } else {
2717: Reply($client, "refused\n", $userinput);
2718:
2719: }
2720: # ------------------------------------------------------------------------ eget
2721: } elsif ($userinput =~ /^eget/) {
2722: if (isClient) {
2723: my ($cmd,$udom,$uname,$namespace,$what)
2724: =split(/:/,$userinput);
2725: $namespace=~s/\//\_/g;
2726: $namespace=~s/\W//g;
2727: chomp($what);
2728: my @queries=split(/\&/,$what);
2729: my $proname=propath($udom,$uname);
2730: my $qresult='';
2731: my %hash;
2732: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER(),0640)) {
2733: for (my $i=0;$i<=$#queries;$i++) {
2734: $qresult.="$hash{$queries[$i]}&";
2735: }
2736: if (untie(%hash)) {
2737: $qresult=~s/\&$//;
2738: if ($cipher) {
2739: my $cmdlength=length($qresult);
2740: $qresult.=" ";
2741: my $encqresult='';
2742: for
2743: (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
2744: $encqresult.=
2745: unpack("H16",
2746: $cipher->encrypt(substr($qresult,$encidx,8)));
2747: }
2748: print $client "enc:$cmdlength:$encqresult\n";
2749: } else {
2750: print $client "error:no_key\n";
2751: }
2752: } else {
2753: print $client "error: ".($!+0)
2754: ." untie(GDBM) Failed ".
2755: "while attempting eget\n";
2756: }
2757: } else {
2758: print $client "error: ".($!+0)
2759: ." tie(GDBM) Failed ".
2760: "while attempting eget\n";
2761: }
2762: } else {
2763: Reply($client, "refused\n", $userinput);
2764:
2765: }
2766: # ------------------------------------------------------------------------- del
2767: } elsif ($userinput =~ /^del/) {
2768: if(isClient) {
2769: my ($cmd,$udom,$uname,$namespace,$what)
2770: =split(/:/,$userinput);
2771: $namespace=~s/\//\_/g;
2772: $namespace=~s/\W//g;
2773: chomp($what);
2774: my $proname=propath($udom,$uname);
2775: my $now=time;
2776: unless ($namespace=~/^nohist\_/) {
2777: my $hfh;
2778: if (
2779: $hfh=IO::File->new(">>$proname/$namespace.hist")
2780: ) { print $hfh "D:$now:$what\n"; }
2781: }
2782: my @keys=split(/\&/,$what);
2783: my %hash;
2784: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT(),0640)) {
2785: foreach my $key (@keys) {
2786: delete($hash{$key});
2787: }
2788: if (untie(%hash)) {
2789: print $client "ok\n";
2790: } else {
2791: print $client "error: ".($!+0)
2792: ." untie(GDBM) Failed ".
2793: "while attempting del\n";
2794: }
2795: } else {
2796: print $client "error: ".($!+0)
2797: ." tie(GDBM) Failed ".
2798: "while attempting del\n";
2799: }
2800: } else {
2801: Reply($client, "refused\n", $userinput);
2802:
2803: }
2804: # ------------------------------------------------------------------------ keys
2805: } elsif ($userinput =~ /^keys/) {
2806: if(isClient) {
2807: my ($cmd,$udom,$uname,$namespace)
2808: =split(/:/,$userinput);
2809: $namespace=~s/\//\_/g;
2810: $namespace=~s/\W//g;
2811: my $proname=propath($udom,$uname);
2812: my $qresult='';
2813: my %hash;
2814: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER(),0640)) {
2815: foreach my $key (keys %hash) {
2816: $qresult.="$key&";
2817: }
2818: if (untie(%hash)) {
2819: $qresult=~s/\&$//;
2820: print $client "$qresult\n";
2821: } else {
2822: print $client "error: ".($!+0)
2823: ." untie(GDBM) Failed ".
2824: "while attempting keys\n";
2825: }
2826: } else {
2827: print $client "error: ".($!+0)
2828: ." tie(GDBM) Failed ".
2829: "while attempting keys\n";
2830: }
2831: } else {
2832: Reply($client, "refused\n", $userinput);
2833:
2834: }
2835: # ----------------------------------------------------------------- dumpcurrent
2836: } elsif ($userinput =~ /^currentdump/) {
2837: if (isClient) {
2838: my ($cmd,$udom,$uname,$namespace)
2839: =split(/:/,$userinput);
2840: $namespace=~s/\//\_/g;
2841: $namespace=~s/\W//g;
2842: my $qresult='';
2843: my $proname=propath($udom,$uname);
2844: my %hash;
2845: if (tie(%hash,'GDBM_File',
2846: "$proname/$namespace.db",
2847: &GDBM_READER(),0640)) {
2848: # Structure of %data:
2849: # $data{$symb}->{$parameter}=$value;
2850: # $data{$symb}->{'v.'.$parameter}=$version;
2851: # since $parameter will be unescaped, we do not
2852: # have to worry about silly parameter names...
2853: my %data = ();
2854: while (my ($key,$value) = each(%hash)) {
2855: my ($v,$symb,$param) = split(/:/,$key);
2856: next if ($v eq 'version' || $symb eq 'keys');
2857: next if (exists($data{$symb}) &&
2858: exists($data{$symb}->{$param}) &&
2859: $data{$symb}->{'v.'.$param} > $v);
2860: $data{$symb}->{$param}=$value;
2861: $data{$symb}->{'v.'.$param}=$v;
2862: }
2863: if (untie(%hash)) {
2864: while (my ($symb,$param_hash) = each(%data)) {
2865: while(my ($param,$value) = each (%$param_hash)){
2866: next if ($param =~ /^v\./);
2867: $qresult.=$symb.':'.$param.'='.$value.'&';
2868: }
2869: }
2870: chop($qresult);
2871: print $client "$qresult\n";
2872: } else {
2873: print $client "error: ".($!+0)
2874: ." untie(GDBM) Failed ".
2875: "while attempting currentdump\n";
2876: }
2877: } else {
2878: print $client "error: ".($!+0)
2879: ." tie(GDBM) Failed ".
2880: "while attempting currentdump\n";
2881: }
2882: } else {
2883: Reply($client, "refused\n", $userinput);
2884: }
2885: # ------------------------------------------------------------------------ dump
2886: } elsif ($userinput =~ /^dump/) {
2887: if(isClient) {
2888: my ($cmd,$udom,$uname,$namespace,$regexp)
2889: =split(/:/,$userinput);
2890: $namespace=~s/\//\_/g;
2891: $namespace=~s/\W//g;
2892: if (defined($regexp)) {
2893: $regexp=&unescape($regexp);
2894: } else {
2895: $regexp='.';
2896: }
2897: my $qresult='';
2898: my $proname=propath($udom,$uname);
2899: my %hash;
2900: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER(),0640)) {
2901: while (my ($key,$value) = each(%hash)) {
2902: if ($regexp eq '.') {
2903: $qresult.=$key.'='.$value.'&';
2904: } else {
2905: my $unescapeKey = &unescape($key);
2906: if (eval('$unescapeKey=~/$regexp/')) {
2907: $qresult.="$key=$value&";
2908: }
2909: }
2910: }
2911: if (untie(%hash)) {
2912: chop($qresult);
2913: print $client "$qresult\n";
2914: } else {
2915: print $client "error: ".($!+0)
2916: ." untie(GDBM) Failed ".
2917: "while attempting dump\n";
2918: }
2919: } else {
2920: print $client "error: ".($!+0)
2921: ." tie(GDBM) Failed ".
2922: "while attempting dump\n";
2923: }
2924: } else {
2925: Reply($client, "refused\n", $userinput);
2926:
2927: }
2928: # ----------------------------------------------------------------------- store
2929: } elsif ($userinput =~ /^store/) {
2930: if(isClient) {
2931: my ($cmd,$udom,$uname,$namespace,$rid,$what)
2932: =split(/:/,$userinput);
2933: $namespace=~s/\//\_/g;
2934: $namespace=~s/\W//g;
2935: if ($namespace ne 'roles') {
2936: chomp($what);
2937: my $proname=propath($udom,$uname);
2938: my $now=time;
2939: unless ($namespace=~/^nohist\_/) {
2940: my $hfh;
2941: if (
2942: $hfh=IO::File->new(">>$proname/$namespace.hist")
2943: ) { print $hfh "P:$now:$rid:$what\n"; }
2944: }
2945: my @pairs=split(/\&/,$what);
2946: my %hash;
2947: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT(),0640)) {
2948: my @previouskeys=split(/&/,$hash{"keys:$rid"});
2949: my $key;
2950: $hash{"version:$rid"}++;
2951: my $version=$hash{"version:$rid"};
2952: my $allkeys='';
2953: foreach my $pair (@pairs) {
2954: my ($key,$value)=split(/=/,$pair);
2955: $allkeys.=$key.':';
2956: $hash{"$version:$rid:$key"}=$value;
2957: }
2958: $hash{"$version:$rid:timestamp"}=$now;
2959: $allkeys.='timestamp';
2960: $hash{"$version:keys:$rid"}=$allkeys;
2961: if (untie(%hash)) {
2962: print $client "ok\n";
2963: } else {
2964: print $client "error: ".($!+0)
2965: ." untie(GDBM) Failed ".
2966: "while attempting store\n";
2967: }
2968: } else {
2969: print $client "error: ".($!+0)
2970: ." tie(GDBM) Failed ".
2971: "while attempting store\n";
2972: }
2973: } else {
2974: print $client "refused\n";
2975: }
2976: } else {
2977: Reply($client, "refused\n", $userinput);
2978:
2979: }
2980: # --------------------------------------------------------------------- restore
2981: } elsif ($userinput =~ /^restore/) {
2982: if(isClient) {
2983: my ($cmd,$udom,$uname,$namespace,$rid)
2984: =split(/:/,$userinput);
2985: $namespace=~s/\//\_/g;
2986: $namespace=~s/\W//g;
2987: chomp($rid);
2988: my $proname=propath($udom,$uname);
2989: my $qresult='';
2990: my %hash;
2991: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER(),0640)) {
2992: my $version=$hash{"version:$rid"};
2993: $qresult.="version=$version&";
2994: my $scope;
2995: for ($scope=1;$scope<=$version;$scope++) {
2996: my $vkeys=$hash{"$scope:keys:$rid"};
2997: my @keys=split(/:/,$vkeys);
2998: my $key;
2999: $qresult.="$scope:keys=$vkeys&";
3000: foreach $key (@keys) {
3001: $qresult.="$scope:$key=".$hash{"$scope:$rid:$key"}."&";
3002: }
3003: }
3004: if (untie(%hash)) {
3005: $qresult=~s/\&$//;
3006: print $client "$qresult\n";
3007: } else {
3008: print $client "error: ".($!+0)
3009: ." untie(GDBM) Failed ".
3010: "while attempting restore\n";
3011: }
3012: } else {
3013: print $client "error: ".($!+0)
3014: ." tie(GDBM) Failed ".
3015: "while attempting restore\n";
3016: }
3017: } else {
3018: Reply($client, "refused\n", $userinput);
3019:
3020: }
3021: # -------------------------------------------------------------------- chatsend
3022: } elsif ($userinput =~ /^chatsend/) {
3023: if(isClient) {
3024: my ($cmd,$cdom,$cnum,$newpost)=split(/\:/,$userinput);
3025: &chatadd($cdom,$cnum,$newpost);
3026: print $client "ok\n";
3027: } else {
3028: Reply($client, "refused\n", $userinput);
3029:
3030: }
3031: # -------------------------------------------------------------------- chatretr
3032: } elsif ($userinput =~ /^chatretr/) {
3033: if(isClient) {
3034: my
3035: ($cmd,$cdom,$cnum,$udom,$uname)=split(/\:/,$userinput);
3036: my $reply='';
3037: foreach (&getchat($cdom,$cnum,$udom,$uname)) {
3038: $reply.=&escape($_).':';
3039: }
3040: $reply=~s/\:$//;
3041: print $client $reply."\n";
3042: } else {
3043: Reply($client, "refused\n", $userinput);
3044:
3045: }
3046: # ------------------------------------------------------------------- querysend
3047: } elsif ($userinput =~ /^querysend/) {
1.193 raeburn 3048: if (isClient) {
1.178 foxr 3049: my ($cmd,$query,
3050: $arg1,$arg2,$arg3)=split(/\:/,$userinput);
3051: $query=~s/\n*$//g;
3052: print $client "".
3053: sqlreply("$clientname\&$query".
3054: "\&$arg1"."\&$arg2"."\&$arg3")."\n";
3055: } else {
3056: Reply($client, "refused\n", $userinput);
3057:
3058: }
3059: # ------------------------------------------------------------------ queryreply
3060: } elsif ($userinput =~ /^queryreply/) {
3061: if(isClient) {
3062: my ($cmd,$id,$reply)=split(/:/,$userinput);
3063: my $store;
3064: my $execdir=$perlvar{'lonDaemons'};
3065: if ($store=IO::File->new(">$execdir/tmp/$id")) {
3066: $reply=~s/\&/\n/g;
3067: print $store $reply;
3068: close $store;
3069: my $store2=IO::File->new(">$execdir/tmp/$id.end");
3070: print $store2 "done\n";
3071: close $store2;
3072: print $client "ok\n";
3073: }
3074: else {
3075: print $client "error: ".($!+0)
3076: ." IO::File->new Failed ".
3077: "while attempting queryreply\n";
3078: }
3079: } else {
3080: Reply($client, "refused\n", $userinput);
3081:
3082: }
3083: # ----------------------------------------------------------------- courseidput
3084: } elsif ($userinput =~ /^courseidput/) {
3085: if(isClient) {
3086: my ($cmd,$udom,$what)=split(/:/,$userinput);
3087: chomp($what);
3088: $udom=~s/\W//g;
3089: my $proname=
3090: "$perlvar{'lonUsersDir'}/$udom/nohist_courseids";
3091: my $now=time;
3092: my @pairs=split(/\&/,$what);
3093: my %hash;
3094: if (tie(%hash,'GDBM_File',"$proname.db",&GDBM_WRCREAT(),0640)) {
3095: foreach my $pair (@pairs) {
1.202 raeburn 3096: my ($key,$descr,$inst_code)=split(/=/,$pair);
3097: $hash{$key}=$descr.':'.$inst_code.':'.$now;
1.178 foxr 3098: }
3099: if (untie(%hash)) {
3100: print $client "ok\n";
3101: } else {
3102: print $client "error: ".($!+0)
3103: ." untie(GDBM) Failed ".
3104: "while attempting courseidput\n";
3105: }
3106: } else {
3107: print $client "error: ".($!+0)
3108: ." tie(GDBM) Failed ".
3109: "while attempting courseidput\n";
3110: }
3111: } else {
3112: Reply($client, "refused\n", $userinput);
3113:
3114: }
3115: # ---------------------------------------------------------------- courseiddump
3116: } elsif ($userinput =~ /^courseiddump/) {
3117: if(isClient) {
3118: my ($cmd,$udom,$since,$description)
3119: =split(/:/,$userinput);
3120: if (defined($description)) {
3121: $description=&unescape($description);
3122: } else {
3123: $description='.';
3124: }
3125: unless (defined($since)) { $since=0; }
3126: my $qresult='';
3127: my $proname=
3128: "$perlvar{'lonUsersDir'}/$udom/nohist_courseids";
3129: my %hash;
3130: if (tie(%hash,'GDBM_File',"$proname.db",&GDBM_READER(),0640)) {
3131: while (my ($key,$value) = each(%hash)) {
1.202 raeburn 3132: my ($descr,$lasttime,$inst_code);
3133: if ($value =~ m/^([^\:]*):([^\:]*):(\d+)$/) {
3134: ($descr,$inst_code,$lasttime)=($1,$2,$3);
3135: } else {
3136: ($descr,$lasttime) = split(/\:/,$value);
3137: }
1.178 foxr 3138: if ($lasttime<$since) { next; }
3139: if ($description eq '.') {
1.202 raeburn 3140: $qresult.=$key.'='.$descr.':'.$inst_code.'&';
1.178 foxr 3141: } else {
3142: my $unescapeVal = &unescape($descr);
1.189 www 3143: if (eval('$unescapeVal=~/\Q$description\E/i')) {
1.202 raeburn 3144: $qresult.=$key.'='.$descr.':'.$inst_code.'&';
1.178 foxr 3145: }
3146: }
3147: }
3148: if (untie(%hash)) {
3149: chop($qresult);
3150: print $client "$qresult\n";
3151: } else {
3152: print $client "error: ".($!+0)
3153: ." untie(GDBM) Failed ".
3154: "while attempting courseiddump\n";
3155: }
3156: } else {
3157: print $client "error: ".($!+0)
3158: ." tie(GDBM) Failed ".
3159: "while attempting courseiddump\n";
3160: }
3161: } else {
3162: Reply($client, "refused\n", $userinput);
3163:
3164: }
3165: # ----------------------------------------------------------------------- idput
3166: } elsif ($userinput =~ /^idput/) {
3167: if(isClient) {
3168: my ($cmd,$udom,$what)=split(/:/,$userinput);
3169: chomp($what);
3170: $udom=~s/\W//g;
3171: my $proname="$perlvar{'lonUsersDir'}/$udom/ids";
3172: my $now=time;
3173: {
3174: my $hfh;
3175: if (
3176: $hfh=IO::File->new(">>$proname.hist")
3177: ) { print $hfh "P:$now:$what\n"; }
3178: }
3179: my @pairs=split(/\&/,$what);
3180: my %hash;
3181: if (tie(%hash,'GDBM_File',"$proname.db",&GDBM_WRCREAT(),0640)) {
3182: foreach my $pair (@pairs) {
3183: my ($key,$value)=split(/=/,$pair);
3184: $hash{$key}=$value;
3185: }
3186: if (untie(%hash)) {
3187: print $client "ok\n";
3188: } else {
3189: print $client "error: ".($!+0)
3190: ." untie(GDBM) Failed ".
3191: "while attempting idput\n";
3192: }
3193: } else {
3194: print $client "error: ".($!+0)
3195: ." tie(GDBM) Failed ".
3196: "while attempting idput\n";
3197: }
3198: } else {
3199: Reply($client, "refused\n", $userinput);
3200:
3201: }
3202: # ----------------------------------------------------------------------- idget
3203: } elsif ($userinput =~ /^idget/) {
3204: if(isClient) {
3205: my ($cmd,$udom,$what)=split(/:/,$userinput);
3206: chomp($what);
3207: $udom=~s/\W//g;
3208: my $proname="$perlvar{'lonUsersDir'}/$udom/ids";
3209: my @queries=split(/\&/,$what);
3210: my $qresult='';
3211: my %hash;
3212: if (tie(%hash,'GDBM_File',"$proname.db",&GDBM_READER(),0640)) {
3213: for (my $i=0;$i<=$#queries;$i++) {
3214: $qresult.="$hash{$queries[$i]}&";
3215: }
3216: if (untie(%hash)) {
3217: $qresult=~s/\&$//;
3218: print $client "$qresult\n";
3219: } else {
3220: print $client "error: ".($!+0)
3221: ." untie(GDBM) Failed ".
3222: "while attempting idget\n";
3223: }
3224: } else {
3225: print $client "error: ".($!+0)
3226: ." tie(GDBM) Failed ".
3227: "while attempting idget\n";
3228: }
3229: } else {
3230: Reply($client, "refused\n", $userinput);
3231:
3232: }
3233: # ---------------------------------------------------------------------- tmpput
3234: } elsif ($userinput =~ /^tmpput/) {
3235: if(isClient) {
3236: my ($cmd,$what)=split(/:/,$userinput);
3237: my $store;
3238: $tmpsnum++;
3239: my $id=$$.'_'.$clientip.'_'.$tmpsnum;
3240: $id=~s/\W/\_/g;
3241: $what=~s/\n//g;
3242: my $execdir=$perlvar{'lonDaemons'};
3243: if ($store=IO::File->new(">$execdir/tmp/$id.tmp")) {
3244: print $store $what;
3245: close $store;
3246: print $client "$id\n";
3247: }
3248: else {
3249: print $client "error: ".($!+0)
3250: ."IO::File->new Failed ".
3251: "while attempting tmpput\n";
3252: }
3253: } else {
3254: Reply($client, "refused\n", $userinput);
3255:
3256: }
3257:
3258: # ---------------------------------------------------------------------- tmpget
3259: } elsif ($userinput =~ /^tmpget/) {
3260: if(isClient) {
3261: my ($cmd,$id)=split(/:/,$userinput);
3262: chomp($id);
3263: $id=~s/\W/\_/g;
3264: my $store;
3265: my $execdir=$perlvar{'lonDaemons'};
3266: if ($store=IO::File->new("$execdir/tmp/$id.tmp")) {
3267: my $reply=<$store>;
3268: print $client "$reply\n";
3269: close $store;
3270: }
3271: else {
3272: print $client "error: ".($!+0)
3273: ."IO::File->new Failed ".
3274: "while attempting tmpget\n";
3275: }
3276: } else {
3277: Reply($client, "refused\n", $userinput);
3278:
3279: }
3280: # ---------------------------------------------------------------------- tmpdel
3281: } elsif ($userinput =~ /^tmpdel/) {
3282: if(isClient) {
3283: my ($cmd,$id)=split(/:/,$userinput);
3284: chomp($id);
3285: $id=~s/\W/\_/g;
3286: my $execdir=$perlvar{'lonDaemons'};
3287: if (unlink("$execdir/tmp/$id.tmp")) {
3288: print $client "ok\n";
3289: } else {
3290: print $client "error: ".($!+0)
3291: ."Unlink tmp Failed ".
3292: "while attempting tmpdel\n";
3293: }
3294: } else {
3295: Reply($client, "refused\n", $userinput);
3296:
3297: }
1.201 matthew 3298: # ----------------------------------------- portfolio directory list (portls)
3299: } elsif ($userinput =~ /^portls/) {
3300: if(isClient) {
3301: my ($cmd,$uname,$udom)=split(/:/,$userinput);
3302: my $udir=propath($udom,$uname).'/userfiles/portfolio';
3303: my $dirLine='';
3304: my $dirContents='';
3305: if (opendir(LSDIR,$udir.'/')){
3306: while ($dirLine = readdir(LSDIR)){
3307: $dirContents = $dirContents.$dirLine.'<br />';
3308: }
3309: } else {
3310: $dirContents = "No directory found\n";
3311: }
3312: print $client $dirContents."\n";
3313: } else {
3314: Reply($client, "refused\n", $userinput);
3315: }
1.178 foxr 3316: # -------------------------------------------------------------------------- ls
3317: } elsif ($userinput =~ /^ls/) {
3318: if(isClient) {
3319: my $obs;
3320: my $rights;
3321: my ($cmd,$ulsdir)=split(/:/,$userinput);
3322: my $ulsout='';
3323: my $ulsfn;
3324: if (-e $ulsdir) {
3325: if(-d $ulsdir) {
3326: if (opendir(LSDIR,$ulsdir)) {
3327: while ($ulsfn=readdir(LSDIR)) {
3328: undef $obs, $rights;
3329: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
3330: #We do some obsolete checking here
3331: if(-e $ulsdir.'/'.$ulsfn.".meta") {
3332: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
3333: my @obsolete=<FILE>;
3334: foreach my $obsolete (@obsolete) {
3335: if($obsolete =~ m|(<obsolete>)(on)|) { $obs = 1; }
3336: if($obsolete =~ m|(<copyright>)(default)|) { $rights = 1; }
3337: }
3338: }
3339: $ulsout.=$ulsfn.'&'.join('&',@ulsstats);
3340: if($obs eq '1') { $ulsout.="&1"; }
3341: else { $ulsout.="&0"; }
3342: if($rights eq '1') { $ulsout.="&1:"; }
3343: else { $ulsout.="&0:"; }
3344: }
3345: closedir(LSDIR);
3346: }
3347: } else {
3348: my @ulsstats=stat($ulsdir);
3349: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
3350: }
3351: } else {
3352: $ulsout='no_such_dir';
3353: }
3354: if ($ulsout eq '') { $ulsout='empty'; }
3355: print $client "$ulsout\n";
3356: } else {
3357: Reply($client, "refused\n", $userinput);
3358:
3359: }
3360: # ----------------------------------------------------------------- setannounce
3361: } elsif ($userinput =~ /^setannounce/) {
3362: if (isClient) {
3363: my ($cmd,$announcement)=split(/:/,$userinput);
3364: chomp($announcement);
3365: $announcement=&unescape($announcement);
3366: if (my $store=IO::File->new('>'.$perlvar{'lonDocRoot'}.
3367: '/announcement.txt')) {
3368: print $store $announcement;
3369: close $store;
3370: print $client "ok\n";
3371: } else {
3372: print $client "error: ".($!+0)."\n";
3373: }
3374: } else {
3375: Reply($client, "refused\n", $userinput);
3376:
3377: }
3378: # ------------------------------------------------------------------ Hanging up
3379: } elsif (($userinput =~ /^exit/) ||
3380: ($userinput =~ /^init/)) { # no restrictions.
3381: &logthis(
3382: "Client $clientip ($clientname) hanging up: $userinput");
3383: print $client "bye\n";
3384: $client->shutdown(2); # shutdown the socket forcibly.
3385: $client->close();
3386: last;
1.161 foxr 3387:
1.178 foxr 3388: # ---------------------------------- set current host/domain
3389: } elsif ($userinput =~ /^sethost:/) {
3390: if (isClient) {
3391: print $client &sethost($userinput)."\n";
3392: } else {
3393: print $client "refused\n";
3394: }
3395: #---------------------------------- request file (?) version.
3396: } elsif ($userinput =~/^version:/) {
3397: if (isClient) {
3398: print $client &version($userinput)."\n";
3399: } else {
3400: print $client "refused\n";
3401: }
1.193 raeburn 3402: #------------------------------- is auto-enrollment enabled?
1.200 matthew 3403: } elsif ($userinput =~/^autorun:/) {
1.193 raeburn 3404: if (isClient) {
1.200 matthew 3405: my ($cmd,$cdom) = split(/:/,$userinput);
3406: my $outcome = &localenroll::run($cdom);
1.193 raeburn 3407: print $client "$outcome\n";
3408: } else {
3409: print $client "0\n";
3410: }
3411: #------------------------------- get official sections (for auto-enrollment).
1.200 matthew 3412: } elsif ($userinput =~/^autogetsections:/) {
1.193 raeburn 3413: if (isClient) {
1.200 matthew 3414: my ($cmd,$coursecode,$cdom)=split(/:/,$userinput);
3415: my @secs = &localenroll::get_sections($coursecode,$cdom);
1.193 raeburn 3416: my $seclist = &escape(join(':',@secs));
3417: print $client "$seclist\n";
3418: } else {
3419: print $client "refused\n";
3420: }
3421: #----------------------- validate owner of new course section (for auto-enrollment).
1.200 matthew 3422: } elsif ($userinput =~/^autonewcourse:/) {
1.193 raeburn 3423: if (isClient) {
1.200 matthew 3424: my ($cmd,$inst_course_id,$owner,$cdom)=split(/:/,$userinput);
3425: my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom);
1.193 raeburn 3426: print $client "$outcome\n";
3427: } else {
3428: print $client "refused\n";
3429: }
3430: #-------------- validate course section in schedule of classes (for auto-enrollment).
1.200 matthew 3431: } elsif ($userinput =~/^autovalidatecourse:/) {
1.193 raeburn 3432: if (isClient) {
1.200 matthew 3433: my ($cmd,$inst_course_id,$cdom)=split(/:/,$userinput);
3434: my $outcome=&localenroll::validate_courseID($inst_course_id,$cdom);
1.193 raeburn 3435: print $client "$outcome\n";
3436: } else {
3437: print $client "refused\n";
3438: }
3439: #--------------------------- create password for new user (for auto-enrollment).
1.200 matthew 3440: } elsif ($userinput =~/^autocreatepassword:/) {
1.193 raeburn 3441: if (isClient) {
1.200 matthew 3442: my ($cmd,$authparam,$cdom)=split(/:/,$userinput);
3443: my ($create_passwd,$authchk);
3444: ($authparam,$create_passwd,$authchk) = &localenroll::create_password($authparam,$cdom);
1.193 raeburn 3445: print $client &escape($authparam.':'.$create_passwd.':'.$authchk)."\n";
3446: } else {
3447: print $client "refused\n";
3448: }
3449: #--------------------------- read and remove temporary files (for auto-enrollment).
1.200 matthew 3450: } elsif ($userinput =~/^autoretrieve:/) {
1.193 raeburn 3451: if (isClient) {
3452: my ($cmd,$filename) = split(/:/,$userinput);
3453: my $source = $perlvar{'lonDaemons'}.'/tmp/'.$filename;
3454: if ( (-e $source) && ($filename ne '') ) {
3455: my $reply = '';
3456: if (open(my $fh,$source)) {
3457: while (<$fh>) {
3458: chomp($_);
3459: $_ =~ s/^\s+//g;
3460: $_ =~ s/\s+$//g;
3461: $reply .= $_;
3462: }
3463: close($fh);
3464: print $client &escape($reply)."\n";
3465: # unlink($source);
3466: } else {
3467: print $client "error\n";
3468: }
3469: } else {
3470: print $client "error\n";
3471: }
3472: } else {
3473: print $client "refused\n";
3474: }
1.205 raeburn 3475: #--------------------- read and retrieve institutional code format (for support form).
3476: } elsif ($userinput =~/^autoinstcodeformat:/) {
3477: if (isClient) {
3478: my $reply;
3479: my($cmd,$cdom,$course) = split(/:/,$userinput);
3480: my @pairs = split/\&/,$course;
3481: my %instcodes = ();
3482: my %codes = ();
3483: my @codetitles = ();
3484: my %cat_titles = ();
3485: my %cat_order = ();
3486: foreach (@pairs) {
3487: my ($key,$value) = split/=/,$_;
3488: $instcodes{&unescape($key)} = &unescape($value);
3489: }
3490: my $formatreply = &localenroll::instcode_format($cdom,\%instcodes,\%codes,\@codetitles,\%cat_titles,\%cat_order);
3491: if ($formatreply eq 'ok') {
3492: my $codes_str = &hash2str(%codes);
3493: my $codetitles_str = &array2str(@codetitles);
3494: my $cat_titles_str = &hash2str(%cat_titles);
3495: my $cat_order_str = &hash2str(%cat_order);
3496: print $client $codes_str.':'.$codetitles_str.':'.$cat_titles_str.':'.$cat_order_str."\n";
3497: }
3498: } else {
3499: print $client "refused\n";
3500: }
1.178 foxr 3501: # ------------------------------------------------------------- unknown command
1.161 foxr 3502:
1.178 foxr 3503: } else {
3504: # unknown command
3505: print $client "unknown_cmd\n";
3506: }
1.177 foxr 3507: # -------------------------------------------------------------------- complete
1.178 foxr 3508: alarm(0);
1.200 matthew 3509: &status('Listening to '.$clientname." ($keymode)");
1.161 foxr 3510: }
1.59 www 3511: # --------------------------------------------- client unknown or fishy, refuse
1.161 foxr 3512: } else {
3513: print $client "refused\n";
3514: $client->close();
1.190 albertel 3515: &logthis("<font color='blue'>WARNING: "
1.161 foxr 3516: ."Rejected client $clientip, closing connection</font>");
3517: }
3518: }
3519:
1.1 albertel 3520: # =============================================================================
1.161 foxr 3521:
1.190 albertel 3522: &logthis("<font color='red'>CRITICAL: "
1.161 foxr 3523: ."Disconnect from $clientip ($clientname)</font>");
3524:
3525:
3526: # this exit is VERY important, otherwise the child will become
3527: # a producer of more and more children, forking yourself into
3528: # process death.
3529: exit;
1.106 foxr 3530:
1.78 foxr 3531: }
3532:
3533:
3534: #
3535: # Checks to see if the input roleput request was to set
3536: # an author role. If so, invokes the lchtmldir script to set
3537: # up a correct public_html
3538: # Parameters:
3539: # request - The request sent to the rolesput subchunk.
3540: # We're looking for /domain/_au
3541: # domain - The domain in which the user is having roles doctored.
3542: # user - Name of the user for which the role is being put.
3543: # authtype - The authentication type associated with the user.
3544: #
3545: sub ManagePermissions
3546: {
1.192 foxr 3547:
3548: my ($request, $domain, $user, $authtype) = @_;
1.78 foxr 3549:
3550: # See if the request is of the form /$domain/_au
3551: if($request =~ /^(\/$domain\/_au)$/) { # It's an author rolesput...
3552: my $execdir = $perlvar{'lonDaemons'};
3553: my $userhome= "/home/$user" ;
1.134 albertel 3554: &logthis("system $execdir/lchtmldir $userhome $user $authtype");
1.78 foxr 3555: system("$execdir/lchtmldir $userhome $user $authtype");
3556: }
3557: }
3558: #
3559: # GetAuthType - Determines the authorization type of a user in a domain.
3560:
3561: # Returns the authorization type or nouser if there is no such user.
3562: #
3563: sub GetAuthType
3564: {
1.192 foxr 3565:
3566: my ($domain, $user) = @_;
1.78 foxr 3567:
1.79 foxr 3568: Debug("GetAuthType( $domain, $user ) \n");
1.78 foxr 3569: my $proname = &propath($domain, $user);
3570: my $passwdfile = "$proname/passwd";
3571: if( -e $passwdfile ) {
3572: my $pf = IO::File->new($passwdfile);
3573: my $realpassword = <$pf>;
3574: chomp($realpassword);
1.79 foxr 3575: Debug("Password info = $realpassword\n");
1.78 foxr 3576: my ($authtype, $contentpwd) = split(/:/, $realpassword);
1.79 foxr 3577: Debug("Authtype = $authtype, content = $contentpwd\n");
1.78 foxr 3578: my $availinfo = '';
1.91 albertel 3579: if($authtype eq 'krb4' or $authtype eq 'krb5') {
1.78 foxr 3580: $availinfo = $contentpwd;
3581: }
1.79 foxr 3582:
1.78 foxr 3583: return "$authtype:$availinfo";
3584: }
3585: else {
1.79 foxr 3586: Debug("Returning nouser");
1.78 foxr 3587: return "nouser";
3588: }
1.1 albertel 3589: }
3590:
1.84 albertel 3591: sub addline {
3592: my ($fname,$hostid,$ip,$newline)=@_;
3593: my $contents;
3594: my $found=0;
3595: my $expr='^'.$hostid.':'.$ip.':';
3596: $expr =~ s/\./\\\./g;
1.134 albertel 3597: my $sh;
1.84 albertel 3598: if ($sh=IO::File->new("$fname.subscription")) {
3599: while (my $subline=<$sh>) {
3600: if ($subline !~ /$expr/) {$contents.= $subline;} else {$found=1;}
3601: }
3602: $sh->close();
3603: }
3604: $sh=IO::File->new(">$fname.subscription");
3605: if ($contents) { print $sh $contents; }
3606: if ($newline) { print $sh $newline; }
3607: $sh->close();
3608: return $found;
1.86 www 3609: }
3610:
3611: sub getchat {
1.122 www 3612: my ($cdom,$cname,$udom,$uname)=@_;
1.87 www 3613: my %hash;
3614: my $proname=&propath($cdom,$cname);
3615: my @entries=();
1.88 albertel 3616: if (tie(%hash,'GDBM_File',"$proname/nohist_chatroom.db",
3617: &GDBM_READER(),0640)) {
3618: @entries=map { $_.':'.$hash{$_} } sort keys %hash;
3619: untie %hash;
1.123 www 3620: }
1.124 www 3621: my @participants=();
1.134 albertel 3622: my $cutoff=time-60;
1.123 www 3623: if (tie(%hash,'GDBM_File',"$proname/nohist_inchatroom.db",
1.124 www 3624: &GDBM_WRCREAT(),0640)) {
3625: $hash{$uname.':'.$udom}=time;
1.123 www 3626: foreach (sort keys %hash) {
3627: if ($hash{$_}>$cutoff) {
1.124 www 3628: $participants[$#participants+1]='active_participant:'.$_;
1.123 www 3629: }
3630: }
3631: untie %hash;
1.86 www 3632: }
1.124 www 3633: return (@participants,@entries);
1.86 www 3634: }
3635:
3636: sub chatadd {
1.88 albertel 3637: my ($cdom,$cname,$newchat)=@_;
3638: my %hash;
3639: my $proname=&propath($cdom,$cname);
3640: my @entries=();
1.142 www 3641: my $time=time;
1.88 albertel 3642: if (tie(%hash,'GDBM_File',"$proname/nohist_chatroom.db",
3643: &GDBM_WRCREAT(),0640)) {
3644: @entries=map { $_.':'.$hash{$_} } sort keys %hash;
3645: my ($lastid)=($entries[$#entries]=~/^(\w+)\:/);
3646: my ($thentime,$idnum)=split(/\_/,$lastid);
3647: my $newid=$time.'_000000';
3648: if ($thentime==$time) {
3649: $idnum=~s/^0+//;
3650: $idnum++;
3651: $idnum=substr('000000'.$idnum,-6,6);
3652: $newid=$time.'_'.$idnum;
3653: }
3654: $hash{$newid}=$newchat;
3655: my $expired=$time-3600;
3656: foreach (keys %hash) {
3657: my ($thistime)=($_=~/(\d+)\_/);
3658: if ($thistime<$expired) {
1.89 www 3659: delete $hash{$_};
1.88 albertel 3660: }
3661: }
3662: untie %hash;
1.142 www 3663: }
3664: {
3665: my $hfh;
3666: if ($hfh=IO::File->new(">>$proname/chatroom.log")) {
3667: print $hfh "$time:".&unescape($newchat)."\n";
3668: }
1.86 www 3669: }
1.84 albertel 3670: }
3671:
3672: sub unsub {
3673: my ($fname,$clientip)=@_;
3674: my $result;
1.188 foxr 3675: my $unsubs = 0; # Number of successful unsubscribes:
3676:
3677:
3678: # An old way subscriptions were handled was to have a
3679: # subscription marker file:
3680:
3681: Debug("Attempting unlink of $fname.$clientname");
1.161 foxr 3682: if (unlink("$fname.$clientname")) {
1.188 foxr 3683: $unsubs++; # Successful unsub via marker file.
3684: }
3685:
3686: # The more modern way to do it is to have a subscription list
3687: # file:
3688:
1.84 albertel 3689: if (-e "$fname.subscription") {
1.161 foxr 3690: my $found=&addline($fname,$clientname,$clientip,'');
1.188 foxr 3691: if ($found) {
3692: $unsubs++;
3693: }
3694: }
3695:
3696: # If either or both of these mechanisms succeeded in unsubscribing a
3697: # resource we can return ok:
3698:
3699: if($unsubs) {
3700: $result = "ok\n";
1.84 albertel 3701: } else {
1.188 foxr 3702: $result = "not_subscribed\n";
1.84 albertel 3703: }
1.188 foxr 3704:
1.84 albertel 3705: return $result;
3706: }
3707:
1.101 www 3708: sub currentversion {
3709: my $fname=shift;
3710: my $version=-1;
3711: my $ulsdir='';
3712: if ($fname=~/^(.+)\/[^\/]+$/) {
3713: $ulsdir=$1;
3714: }
1.114 albertel 3715: my ($fnamere1,$fnamere2);
3716: # remove version if already specified
1.101 www 3717: $fname=~s/\.\d+\.(\w+(?:\.meta)*)$/\.$1/;
1.114 albertel 3718: # get the bits that go before and after the version number
3719: if ( $fname=~/^(.*\.)(\w+(?:\.meta)*)$/ ) {
3720: $fnamere1=$1;
3721: $fnamere2='.'.$2;
3722: }
1.101 www 3723: if (-e $fname) { $version=1; }
3724: if (-e $ulsdir) {
1.134 albertel 3725: if(-d $ulsdir) {
3726: if (opendir(LSDIR,$ulsdir)) {
3727: my $ulsfn;
3728: while ($ulsfn=readdir(LSDIR)) {
1.101 www 3729: # see if this is a regular file (ignore links produced earlier)
1.134 albertel 3730: my $thisfile=$ulsdir.'/'.$ulsfn;
3731: unless (-l $thisfile) {
1.160 www 3732: if ($thisfile=~/\Q$fnamere1\E(\d+)\Q$fnamere2\E$/) {
1.134 albertel 3733: if ($1>$version) { $version=$1; }
3734: }
3735: }
3736: }
3737: closedir(LSDIR);
3738: $version++;
3739: }
3740: }
3741: }
3742: return $version;
1.101 www 3743: }
3744:
3745: sub thisversion {
3746: my $fname=shift;
3747: my $version=-1;
3748: if ($fname=~/\.(\d+)\.\w+(?:\.meta)*$/) {
3749: $version=$1;
3750: }
3751: return $version;
3752: }
3753:
1.84 albertel 3754: sub subscribe {
3755: my ($userinput,$clientip)=@_;
3756: my $result;
3757: my ($cmd,$fname)=split(/:/,$userinput);
3758: my $ownership=&ishome($fname);
3759: if ($ownership eq 'owner') {
1.101 www 3760: # explitly asking for the current version?
3761: unless (-e $fname) {
3762: my $currentversion=¤tversion($fname);
3763: if (&thisversion($fname)==$currentversion) {
3764: if ($fname=~/^(.+)\.\d+\.(\w+(?:\.meta)*)$/) {
3765: my $root=$1;
3766: my $extension=$2;
3767: symlink($root.'.'.$extension,
3768: $root.'.'.$currentversion.'.'.$extension);
1.102 www 3769: unless ($extension=~/\.meta$/) {
3770: symlink($root.'.'.$extension.'.meta',
3771: $root.'.'.$currentversion.'.'.$extension.'.meta');
3772: }
1.101 www 3773: }
3774: }
3775: }
1.84 albertel 3776: if (-e $fname) {
3777: if (-d $fname) {
3778: $result="directory\n";
3779: } else {
1.161 foxr 3780: if (-e "$fname.$clientname") {&unsub($fname,$clientip);}
1.134 albertel 3781: my $now=time;
1.161 foxr 3782: my $found=&addline($fname,$clientname,$clientip,
3783: "$clientname:$clientip:$now\n");
1.84 albertel 3784: if ($found) { $result="$fname\n"; }
3785: # if they were subscribed to only meta data, delete that
3786: # subscription, when you subscribe to a file you also get
3787: # the metadata
3788: unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); }
3789: $fname=~s/\/home\/httpd\/html\/res/raw/;
3790: $fname="http://$thisserver/".$fname;
3791: $result="$fname\n";
3792: }
3793: } else {
3794: $result="not_found\n";
3795: }
3796: } else {
3797: $result="rejected\n";
3798: }
3799: return $result;
3800: }
1.91 albertel 3801:
3802: sub make_passwd_file {
1.98 foxr 3803: my ($uname, $umode,$npass,$passfilename)=@_;
1.91 albertel 3804: my $result="ok\n";
3805: if ($umode eq 'krb4' or $umode eq 'krb5') {
3806: {
3807: my $pf = IO::File->new(">$passfilename");
3808: print $pf "$umode:$npass\n";
3809: }
3810: } elsif ($umode eq 'internal') {
3811: my $salt=time;
3812: $salt=substr($salt,6,2);
3813: my $ncpass=crypt($npass,$salt);
3814: {
3815: &Debug("Creating internal auth");
3816: my $pf = IO::File->new(">$passfilename");
3817: print $pf "internal:$ncpass\n";
3818: }
3819: } elsif ($umode eq 'localauth') {
3820: {
3821: my $pf = IO::File->new(">$passfilename");
3822: print $pf "localauth:$npass\n";
3823: }
3824: } elsif ($umode eq 'unix') {
3825: {
1.186 foxr 3826: #
3827: # Don't allow the creation of privileged accounts!!! that would
3828: # be real bad!!!
3829: #
3830: my $uid = getpwnam($uname);
3831: if((defined $uid) && ($uid == 0)) {
3832: &logthis(">>>Attempted to create privilged account blocked");
3833: return "no_priv_account_error\n";
3834: }
3835:
1.91 albertel 3836: my $execpath="$perlvar{'lonDaemons'}/"."lcuseradd";
3837: {
3838: &Debug("Executing external: ".$execpath);
1.98 foxr 3839: &Debug("user = ".$uname.", Password =". $npass);
1.132 matthew 3840: my $se = IO::File->new("|$execpath > $perlvar{'lonDaemons'}/logs/lcuseradd.log");
1.91 albertel 3841: print $se "$uname\n";
3842: print $se "$npass\n";
3843: print $se "$npass\n";
1.97 foxr 3844: }
3845: my $useraddok = $?;
3846: if($useraddok > 0) {
3847: &logthis("Failed lcuseradd: ".&lcuseraddstrerror($useraddok));
1.91 albertel 3848: }
3849: my $pf = IO::File->new(">$passfilename");
3850: print $pf "unix:\n";
3851: }
3852: } elsif ($umode eq 'none') {
3853: {
3854: my $pf = IO::File->new(">$passfilename");
3855: print $pf "none:\n";
3856: }
3857: } else {
3858: $result="auth_mode_error\n";
3859: }
3860: return $result;
1.121 albertel 3861: }
3862:
3863: sub sethost {
3864: my ($remotereq) = @_;
3865: my (undef,$hostid)=split(/:/,$remotereq);
3866: if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; }
3867: if ($hostip{$perlvar{'lonHostID'}} eq $hostip{$hostid}) {
1.200 matthew 3868: $currenthostid =$hostid;
1.121 albertel 3869: $currentdomainid=$hostdom{$hostid};
3870: &logthis("Setting hostid to $hostid, and domain to $currentdomainid");
3871: } else {
3872: &logthis("Requested host id $hostid not an alias of ".
3873: $perlvar{'lonHostID'}." refusing connection");
3874: return 'unable_to_set';
3875: }
3876: return 'ok';
3877: }
3878:
3879: sub version {
3880: my ($userinput)=@_;
3881: $remoteVERSION=(split(/:/,$userinput))[1];
3882: return "version:$VERSION";
1.127 albertel 3883: }
1.178 foxr 3884:
1.128 albertel 3885: #There is a copy of this in lonnet.pm
1.127 albertel 3886: sub userload {
3887: my $numusers=0;
3888: {
3889: opendir(LONIDS,$perlvar{'lonIDsDir'});
3890: my $filename;
3891: my $curtime=time;
3892: while ($filename=readdir(LONIDS)) {
3893: if ($filename eq '.' || $filename eq '..') {next;}
1.138 albertel 3894: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
1.159 albertel 3895: if ($curtime-$mtime < 1800) { $numusers++; }
1.127 albertel 3896: }
3897: closedir(LONIDS);
3898: }
3899: my $userloadpercent=0;
3900: my $maxuserload=$perlvar{'lonUserLoadLim'};
3901: if ($maxuserload) {
1.129 albertel 3902: $userloadpercent=100*$numusers/$maxuserload;
1.127 albertel 3903: }
1.130 albertel 3904: $userloadpercent=sprintf("%.2f",$userloadpercent);
1.127 albertel 3905: return $userloadpercent;
1.91 albertel 3906: }
3907:
1.205 raeburn 3908: # Routines for serializing arrays and hashes (copies from lonnet)
3909:
3910: sub array2str {
3911: my (@array) = @_;
3912: my $result=&arrayref2str(\@array);
3913: $result=~s/^__ARRAY_REF__//;
3914: $result=~s/__END_ARRAY_REF__$//;
3915: return $result;
3916: }
3917:
3918: sub arrayref2str {
3919: my ($arrayref) = @_;
3920: my $result='__ARRAY_REF__';
3921: foreach my $elem (@$arrayref) {
3922: if(ref($elem) eq 'ARRAY') {
3923: $result.=&arrayref2str($elem).'&';
3924: } elsif(ref($elem) eq 'HASH') {
3925: $result.=&hashref2str($elem).'&';
3926: } elsif(ref($elem)) {
3927: #print("Got a ref of ".(ref($elem))." skipping.");
3928: } else {
3929: $result.=&escape($elem).'&';
3930: }
3931: }
3932: $result=~s/\&$//;
3933: $result .= '__END_ARRAY_REF__';
3934: return $result;
3935: }
3936:
3937: sub hash2str {
3938: my (%hash) = @_;
3939: my $result=&hashref2str(\%hash);
3940: $result=~s/^__HASH_REF__//;
3941: $result=~s/__END_HASH_REF__$//;
3942: return $result;
3943: }
3944:
3945: sub hashref2str {
3946: my ($hashref)=@_;
3947: my $result='__HASH_REF__';
3948: foreach (sort(keys(%$hashref))) {
3949: if (ref($_) eq 'ARRAY') {
3950: $result.=&arrayref2str($_).'=';
3951: } elsif (ref($_) eq 'HASH') {
3952: $result.=&hashref2str($_).'=';
3953: } elsif (ref($_)) {
3954: $result.='=';
3955: #print("Got a ref of ".(ref($_))." skipping.");
3956: } else {
3957: if ($_) {$result.=&escape($_).'=';} else { last; }
3958: }
3959:
3960: if(ref($hashref->{$_}) eq 'ARRAY') {
3961: $result.=&arrayref2str($hashref->{$_}).'&';
3962: } elsif(ref($hashref->{$_}) eq 'HASH') {
3963: $result.=&hashref2str($hashref->{$_}).'&';
3964: } elsif(ref($hashref->{$_})) {
3965: $result.='&';
3966: #print("Got a ref of ".(ref($hashref->{$_}))." skipping.");
3967: } else {
3968: $result.=&escape($hashref->{$_}).'&';
3969: }
3970: }
3971: $result=~s/\&$//;
3972: $result .= '__END_HASH_REF__';
3973: return $result;
3974: }
1.200 matthew 3975:
1.61 harris41 3976: # ----------------------------------- POD (plain old documentation, CPAN style)
3977:
3978: =head1 NAME
3979:
3980: lond - "LON Daemon" Server (port "LOND" 5663)
3981:
3982: =head1 SYNOPSIS
3983:
1.74 harris41 3984: Usage: B<lond>
3985:
3986: Should only be run as user=www. This is a command-line script which
3987: is invoked by B<loncron>. There is no expectation that a typical user
3988: will manually start B<lond> from the command-line. (In other words,
3989: DO NOT START B<lond> YOURSELF.)
1.61 harris41 3990:
3991: =head1 DESCRIPTION
3992:
1.74 harris41 3993: There are two characteristics associated with the running of B<lond>,
3994: PROCESS MANAGEMENT (starting, stopping, handling child processes)
3995: and SERVER-SIDE ACTIVITIES (password authentication, user creation,
3996: subscriptions, etc). These are described in two large
3997: sections below.
3998:
3999: B<PROCESS MANAGEMENT>
4000:
1.61 harris41 4001: Preforker - server who forks first. Runs as a daemon. HUPs.
4002: Uses IDEA encryption
4003:
1.74 harris41 4004: B<lond> forks off children processes that correspond to the other servers
4005: in the network. Management of these processes can be done at the
4006: parent process level or the child process level.
4007:
4008: B<logs/lond.log> is the location of log messages.
4009:
4010: The process management is now explained in terms of linux shell commands,
4011: subroutines internal to this code, and signal assignments:
4012:
4013: =over 4
4014:
4015: =item *
4016:
4017: PID is stored in B<logs/lond.pid>
4018:
4019: This is the process id number of the parent B<lond> process.
4020:
4021: =item *
4022:
4023: SIGTERM and SIGINT
4024:
4025: Parent signal assignment:
4026: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
4027:
4028: Child signal assignment:
4029: $SIG{INT} = 'DEFAULT'; (and SIGTERM is DEFAULT also)
4030: (The child dies and a SIGALRM is sent to parent, awaking parent from slumber
4031: to restart a new child.)
4032:
4033: Command-line invocations:
4034: B<kill> B<-s> SIGTERM I<PID>
4035: B<kill> B<-s> SIGINT I<PID>
4036:
4037: Subroutine B<HUNTSMAN>:
4038: This is only invoked for the B<lond> parent I<PID>.
4039: This kills all the children, and then the parent.
4040: The B<lonc.pid> file is cleared.
4041:
4042: =item *
4043:
4044: SIGHUP
4045:
4046: Current bug:
4047: This signal can only be processed the first time
4048: on the parent process. Subsequent SIGHUP signals
4049: have no effect.
4050:
4051: Parent signal assignment:
4052: $SIG{HUP} = \&HUPSMAN;
4053:
4054: Child signal assignment:
4055: none (nothing happens)
4056:
4057: Command-line invocations:
4058: B<kill> B<-s> SIGHUP I<PID>
4059:
4060: Subroutine B<HUPSMAN>:
4061: This is only invoked for the B<lond> parent I<PID>,
4062: This kills all the children, and then the parent.
4063: The B<lond.pid> file is cleared.
4064:
4065: =item *
4066:
4067: SIGUSR1
4068:
4069: Parent signal assignment:
4070: $SIG{USR1} = \&USRMAN;
4071:
4072: Child signal assignment:
4073: $SIG{USR1}= \&logstatus;
4074:
4075: Command-line invocations:
4076: B<kill> B<-s> SIGUSR1 I<PID>
4077:
4078: Subroutine B<USRMAN>:
4079: When invoked for the B<lond> parent I<PID>,
4080: SIGUSR1 is sent to all the children, and the status of
4081: each connection is logged.
1.144 foxr 4082:
4083: =item *
4084:
4085: SIGUSR2
4086:
4087: Parent Signal assignment:
4088: $SIG{USR2} = \&UpdateHosts
4089:
4090: Child signal assignment:
4091: NONE
4092:
1.74 harris41 4093:
4094: =item *
4095:
4096: SIGCHLD
4097:
4098: Parent signal assignment:
4099: $SIG{CHLD} = \&REAPER;
4100:
4101: Child signal assignment:
4102: none
4103:
4104: Command-line invocations:
4105: B<kill> B<-s> SIGCHLD I<PID>
4106:
4107: Subroutine B<REAPER>:
4108: This is only invoked for the B<lond> parent I<PID>.
4109: Information pertaining to the child is removed.
4110: The socket port is cleaned up.
4111:
4112: =back
4113:
4114: B<SERVER-SIDE ACTIVITIES>
4115:
4116: Server-side information can be accepted in an encrypted or non-encrypted
4117: method.
4118:
4119: =over 4
4120:
4121: =item ping
4122:
4123: Query a client in the hosts.tab table; "Are you there?"
4124:
4125: =item pong
4126:
4127: Respond to a ping query.
4128:
4129: =item ekey
4130:
4131: Read in encrypted key, make cipher. Respond with a buildkey.
4132:
4133: =item load
4134:
4135: Respond with CPU load based on a computation upon /proc/loadavg.
4136:
4137: =item currentauth
4138:
4139: Reply with current authentication information (only over an
4140: encrypted channel).
4141:
4142: =item auth
4143:
4144: Only over an encrypted channel, reply as to whether a user's
4145: authentication information can be validated.
4146:
4147: =item passwd
4148:
4149: Allow for a password to be set.
4150:
4151: =item makeuser
4152:
4153: Make a user.
4154:
4155: =item passwd
4156:
4157: Allow for authentication mechanism and password to be changed.
4158:
4159: =item home
1.61 harris41 4160:
1.74 harris41 4161: Respond to a question "are you the home for a given user?"
4162:
4163: =item update
4164:
4165: Update contents of a subscribed resource.
4166:
4167: =item unsubscribe
4168:
4169: The server is unsubscribing from a resource.
4170:
4171: =item subscribe
4172:
4173: The server is subscribing to a resource.
4174:
4175: =item log
4176:
4177: Place in B<logs/lond.log>
4178:
4179: =item put
4180:
4181: stores hash in namespace
4182:
4183: =item rolesput
4184:
4185: put a role into a user's environment
4186:
4187: =item get
4188:
4189: returns hash with keys from array
4190: reference filled in from namespace
4191:
4192: =item eget
4193:
4194: returns hash with keys from array
4195: reference filled in from namesp (encrypts the return communication)
4196:
4197: =item rolesget
4198:
4199: get a role from a user's environment
4200:
4201: =item del
4202:
4203: deletes keys out of array from namespace
4204:
4205: =item keys
4206:
4207: returns namespace keys
4208:
4209: =item dump
4210:
4211: dumps the complete (or key matching regexp) namespace into a hash
4212:
4213: =item store
4214:
4215: stores hash permanently
4216: for this url; hashref needs to be given and should be a \%hashname; the
4217: remaining args aren't required and if they aren't passed or are '' they will
4218: be derived from the ENV
4219:
4220: =item restore
4221:
4222: returns a hash for a given url
4223:
4224: =item querysend
4225:
4226: Tells client about the lonsql process that has been launched in response
4227: to a sent query.
4228:
4229: =item queryreply
4230:
4231: Accept information from lonsql and make appropriate storage in temporary
4232: file space.
4233:
4234: =item idput
4235:
4236: Defines usernames as corresponding to IDs. (These "IDs" are unique identifiers
4237: for each student, defined perhaps by the institutional Registrar.)
4238:
4239: =item idget
4240:
4241: Returns usernames corresponding to IDs. (These "IDs" are unique identifiers
4242: for each student, defined perhaps by the institutional Registrar.)
4243:
4244: =item tmpput
4245:
4246: Accept and store information in temporary space.
4247:
4248: =item tmpget
4249:
4250: Send along temporarily stored information.
4251:
4252: =item ls
4253:
4254: List part of a user's directory.
4255:
1.135 foxr 4256: =item pushtable
4257:
4258: Pushes a file in /home/httpd/lonTab directory. Currently limited to:
4259: hosts.tab and domain.tab. The old file is copied to *.tab.backup but
4260: must be restored manually in case of a problem with the new table file.
4261: pushtable requires that the request be encrypted and validated via
4262: ValidateManager. The form of the command is:
4263: enc:pushtable tablename <tablecontents> \n
4264: where pushtable, tablename and <tablecontents> will be encrypted, but \n is a
4265: cleartext newline.
4266:
1.74 harris41 4267: =item Hanging up (exit or init)
4268:
4269: What to do when a client tells the server that they (the client)
4270: are leaving the network.
4271:
4272: =item unknown command
4273:
4274: If B<lond> is sent an unknown command (not in the list above),
4275: it replys to the client "unknown_cmd".
1.135 foxr 4276:
1.74 harris41 4277:
4278: =item UNKNOWN CLIENT
4279:
4280: If the anti-spoofing algorithm cannot verify the client,
4281: the client is rejected (with a "refused" message sent
4282: to the client, and the connection is closed.
4283:
4284: =back
1.61 harris41 4285:
4286: =head1 PREREQUISITES
4287:
4288: IO::Socket
4289: IO::File
4290: Apache::File
4291: Symbol
4292: POSIX
4293: Crypt::IDEA
4294: LWP::UserAgent()
4295: GDBM_File
4296: Authen::Krb4
1.91 albertel 4297: Authen::Krb5
1.61 harris41 4298:
4299: =head1 COREQUISITES
4300:
4301: =head1 OSNAMES
4302:
4303: linux
4304:
4305: =head1 SCRIPT CATEGORIES
4306:
4307: Server/Process
4308:
4309: =cut
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