Annotation of loncom/lond, revision 1.448
1.1 albertel 1: #!/usr/bin/perl
2: # The LearningOnline Network
3: # lond "LON Daemon" Server (port "LOND" 5663)
1.60 www 4: #
1.448 ! raeburn 5: # $Id: lond,v 1.447 2010/07/17 20:01:56 raeburn Exp $
1.60 www 6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
1.167 foxr 13: # the Free Software Foundation; either version 2 of the License, or
1.60 www 14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
1.178 foxr 23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
1.60 www 24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
1.161 foxr 27:
28:
1.60 www 29: # http://www.lon-capa.org/
30: #
1.54 harris41 31:
1.134 albertel 32: use strict;
1.80 harris41 33: use lib '/home/httpd/lib/perl/';
1.325 albertel 34: use LONCAPA;
1.80 harris41 35: use LONCAPA::Configuration;
36:
1.1 albertel 37: use IO::Socket;
38: use IO::File;
1.126 albertel 39: #use Apache::File;
1.1 albertel 40: use POSIX;
41: use Crypt::IDEA;
42: use LWP::UserAgent();
1.347 raeburn 43: use Digest::MD5 qw(md5_hex);
1.3 www 44: use GDBM_File;
1.91 albertel 45: use Authen::Krb5;
1.49 albertel 46: use localauth;
1.193 raeburn 47: use localenroll;
1.265 albertel 48: use localstudentphoto;
1.143 foxr 49: use File::Copy;
1.292 albertel 50: use File::Find;
1.200 matthew 51: use LONCAPA::lonlocal;
52: use LONCAPA::lonssl;
1.221 albertel 53: use Fcntl qw(:flock);
1.383 raeburn 54: use Apache::lonnet;
1.1 albertel 55:
1.414 foxr 56: my $DEBUG = 0; # Non zero to enable debug log entries.
1.77 foxr 57:
1.57 www 58: my $status='';
59: my $lastlog='';
60:
1.448 ! raeburn 61: my $VERSION='$Revision: 1.447 $'; #' stupid emacs
1.121 albertel 62: my $remoteVERSION;
1.214 foxr 63: my $currenthostid="default";
1.115 albertel 64: my $currentdomainid;
1.134 albertel 65:
66: my $client;
1.200 matthew 67: my $clientip; # IP address of client.
68: my $clientname; # LonCAPA name of client.
1.448 ! raeburn 69: my $clientversion; # LonCAPA version running on client.
! 70: my $clienthomedom; # LonCAPA domain of homeID for client.
! 71: # primary library server.
1.140 foxr 72:
1.134 albertel 73: my $server;
1.200 matthew 74:
75: my $keymode;
1.198 foxr 76:
1.207 foxr 77: my $cipher; # Cipher key negotiated with client
78: my $tmpsnum = 0; # Id of tmpputs.
79:
1.178 foxr 80: #
81: # Connection type is:
82: # client - All client actions are allowed
83: # manager - only management functions allowed.
84: # both - Both management and client actions are allowed
85: #
1.161 foxr 86:
1.178 foxr 87: my $ConnectionType;
1.161 foxr 88:
1.178 foxr 89: my %managers; # Ip -> manager names
1.161 foxr 90:
1.178 foxr 91: my %perlvar; # Will have the apache conf defined perl vars.
1.134 albertel 92:
1.178 foxr 93: #
1.207 foxr 94: # The hash below is used for command dispatching, and is therefore keyed on the request keyword.
95: # Each element of the hash contains a reference to an array that contains:
96: # A reference to a sub that executes the request corresponding to the keyword.
97: # A flag that is true if the request must be encoded to be acceptable.
98: # A mask with bits as follows:
99: # CLIENT_OK - Set when the function is allowed by ordinary clients
100: # MANAGER_OK - Set when the function is allowed to manager clients.
101: #
102: my $CLIENT_OK = 1;
103: my $MANAGER_OK = 2;
104: my %Dispatcher;
105:
106:
107: #
1.178 foxr 108: # The array below are password error strings."
109: #
110: my $lastpwderror = 13; # Largest error number from lcpasswd.
111: my @passwderrors = ("ok",
1.287 foxr 112: "pwchange_failure - lcpasswd must be run as user 'www'",
113: "pwchange_failure - lcpasswd got incorrect number of arguments",
114: "pwchange_failure - lcpasswd did not get the right nubmer of input text lines",
115: "pwchange_failure - lcpasswd too many simultaneous pwd changes in progress",
116: "pwchange_failure - lcpasswd User does not exist.",
117: "pwchange_failure - lcpasswd Incorrect current passwd",
118: "pwchange_failure - lcpasswd Unable to su to root.",
119: "pwchange_failure - lcpasswd Cannot set new passwd.",
120: "pwchange_failure - lcpasswd Username has invalid characters",
121: "pwchange_failure - lcpasswd Invalid characters in password",
122: "pwchange_failure - lcpasswd User already exists",
123: "pwchange_failure - lcpasswd Something went wrong with user addition.",
124: "pwchange_failure - lcpasswd Password mismatch",
125: "pwchange_failure - lcpasswd Error filename is invalid");
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",
1.377 albertel 140: "lcuseradd Username has invalid characters",
1.178 foxr 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:
1.412 foxr 147: # This array are the errors from lcinstallfile:
148:
149: my @installerrors = ("ok",
150: "Initial user id of client not that of www",
151: "Usage error, not enough command line arguments",
152: "Source file name does not exist",
153: "Destination file name does not exist",
154: "Some file operation failed",
155: "Invalid table filename."
156: );
1.207 foxr 157:
158: #
159: # Statistics that are maintained and dislayed in the status line.
160: #
1.212 foxr 161: my $Transactions = 0; # Number of attempted transactions.
162: my $Failures = 0; # Number of transcations failed.
1.207 foxr 163:
164: # ResetStatistics:
165: # Resets the statistics counters:
166: #
167: sub ResetStatistics {
168: $Transactions = 0;
169: $Failures = 0;
170: }
171:
1.200 matthew 172: #------------------------------------------------------------------------
173: #
174: # LocalConnection
175: # Completes the formation of a locally authenticated connection.
176: # This function will ensure that the 'remote' client is really the
177: # local host. If not, the connection is closed, and the function fails.
178: # If so, initcmd is parsed for the name of a file containing the
179: # IDEA session key. The fie is opened, read, deleted and the session
180: # key returned to the caller.
181: #
182: # Parameters:
183: # $Socket - Socket open on client.
184: # $initcmd - The full text of the init command.
185: #
186: # Returns:
187: # IDEA session key on success.
188: # undef on failure.
189: #
190: sub LocalConnection {
191: my ($Socket, $initcmd) = @_;
1.373 albertel 192: Debug("Attempting local connection: $initcmd client: $clientip");
1.277 albertel 193: if($clientip ne "127.0.0.1") {
1.200 matthew 194: &logthis('<font color="red"> LocalConnection rejecting non local: '
1.373 albertel 195: ."$clientip ne 127.0.0.1 </font>");
1.200 matthew 196: close $Socket;
197: return undef;
1.224 foxr 198: } else {
1.200 matthew 199: chomp($initcmd); # Get rid of \n in filename.
200: my ($init, $type, $name) = split(/:/, $initcmd);
201: Debug(" Init command: $init $type $name ");
202:
203: # Require that $init = init, and $type = local: Otherwise
204: # the caller is insane:
205:
206: if(($init ne "init") && ($type ne "local")) {
207: &logthis('<font color = "red"> LocalConnection: caller is insane! '
208: ."init = $init, and type = $type </font>");
209: close($Socket);;
210: return undef;
211:
212: }
213: # Now get the key filename:
214:
215: my $IDEAKey = lonlocal::ReadKeyFile($name);
216: return $IDEAKey;
217: }
218: }
219: #------------------------------------------------------------------------------
220: #
221: # SSLConnection
222: # Completes the formation of an ssh authenticated connection. The
223: # socket is promoted to an ssl socket. If this promotion and the associated
224: # certificate exchange are successful, the IDEA key is generated and sent
225: # to the remote peer via the SSL tunnel. The IDEA key is also returned to
226: # the caller after the SSL tunnel is torn down.
227: #
228: # Parameters:
229: # Name Type Purpose
230: # $Socket IO::Socket::INET Plaintext socket.
231: #
232: # Returns:
233: # IDEA key on success.
234: # undef on failure.
235: #
236: sub SSLConnection {
237: my $Socket = shift;
238:
239: Debug("SSLConnection: ");
240: my $KeyFile = lonssl::KeyFile();
241: if(!$KeyFile) {
242: my $err = lonssl::LastError();
243: &logthis("<font color=\"red\"> CRITICAL"
244: ."Can't get key file $err </font>");
245: return undef;
246: }
247: my ($CACertificate,
248: $Certificate) = lonssl::CertificateFile();
249:
250:
251: # If any of the key, certificate or certificate authority
252: # certificate filenames are not defined, this can't work.
253:
254: if((!$Certificate) || (!$CACertificate)) {
255: my $err = lonssl::LastError();
256: &logthis("<font color=\"red\"> CRITICAL"
257: ."Can't get certificates: $err </font>");
258:
259: return undef;
260: }
261: Debug("Key: $KeyFile CA: $CACertificate Cert: $Certificate");
262:
263: # Indicate to our peer that we can procede with
264: # a transition to ssl authentication:
265:
266: print $Socket "ok:ssl\n";
267:
268: Debug("Approving promotion -> ssl");
269: # And do so:
270:
271: my $SSLSocket = lonssl::PromoteServerSocket($Socket,
272: $CACertificate,
273: $Certificate,
274: $KeyFile);
275: if(! ($SSLSocket) ) { # SSL socket promotion failed.
276: my $err = lonssl::LastError();
277: &logthis("<font color=\"red\"> CRITICAL "
278: ."SSL Socket promotion failed: $err </font>");
279: return undef;
280: }
281: Debug("SSL Promotion successful");
282:
283: #
284: # The only thing we'll use the socket for is to send the IDEA key
285: # to the peer:
286:
287: my $Key = lonlocal::CreateCipherKey();
288: print $SSLSocket "$Key\n";
289:
290: lonssl::Close($SSLSocket);
291:
292: Debug("Key exchange complete: $Key");
293:
294: return $Key;
295: }
296: #
297: # InsecureConnection:
298: # If insecure connections are allowd,
299: # exchange a challenge with the client to 'validate' the
300: # client (not really, but that's the protocol):
301: # We produce a challenge string that's sent to the client.
302: # The client must then echo the challenge verbatim to us.
303: #
304: # Parameter:
305: # Socket - Socket open on the client.
306: # Returns:
307: # 1 - success.
308: # 0 - failure (e.g.mismatch or insecure not allowed).
309: #
310: sub InsecureConnection {
311: my $Socket = shift;
312:
313: # Don't even start if insecure connections are not allowed.
314:
315: if(! $perlvar{londAllowInsecure}) { # Insecure connections not allowed.
316: return 0;
317: }
318:
319: # Fabricate a challenge string and send it..
320:
321: my $challenge = "$$".time; # pid + time.
322: print $Socket "$challenge\n";
323: &status("Waiting for challenge reply");
324:
325: my $answer = <$Socket>;
326: $answer =~s/\W//g;
327: if($challenge eq $answer) {
328: return 1;
1.224 foxr 329: } else {
1.200 matthew 330: logthis("<font color='blue'>WARNING client did not respond to challenge</font>");
331: &status("No challenge reqply");
332: return 0;
333: }
334:
335:
336: }
1.251 foxr 337: #
338: # Safely execute a command (as long as it's not a shel command and doesn
339: # not require/rely on shell escapes. The function operates by doing a
340: # a pipe based fork and capturing stdout and stderr from the pipe.
341: #
342: # Formal Parameters:
343: # $line - A line of text to be executed as a command.
344: # Returns:
345: # The output from that command. If the output is multiline the caller
346: # must know how to split up the output.
347: #
348: #
349: sub execute_command {
350: my ($line) = @_;
351: my @words = split(/\s/, $line); # Bust the command up into words.
352: my $output = "";
353:
354: my $pid = open(CHILD, "-|");
355:
356: if($pid) { # Parent process
357: Debug("In parent process for execute_command");
358: my @data = <CHILD>; # Read the child's outupt...
359: close CHILD;
360: foreach my $output_line (@data) {
361: Debug("Adding $output_line");
362: $output .= $output_line; # Presumably has a \n on it.
363: }
364:
365: } else { # Child process
366: close (STDERR);
367: open (STDERR, ">&STDOUT");# Combine stderr, and stdout...
368: exec(@words); # won't return.
369: }
370: return $output;
371: }
372:
1.200 matthew 373:
1.140 foxr 374: # GetCertificate: Given a transaction that requires a certificate,
375: # this function will extract the certificate from the transaction
376: # request. Note that at this point, the only concept of a certificate
377: # is the hostname to which we are connected.
378: #
379: # Parameter:
380: # request - The request sent by our client (this parameterization may
381: # need to change when we really use a certificate granting
382: # authority.
383: #
384: sub GetCertificate {
385: my $request = shift;
386:
387: return $clientip;
388: }
1.161 foxr 389:
1.178 foxr 390: #
391: # Return true if client is a manager.
392: #
393: sub isManager {
394: return (($ConnectionType eq "manager") || ($ConnectionType eq "both"));
395: }
396: #
397: # Return tru if client can do client functions
398: #
399: sub isClient {
400: return (($ConnectionType eq "client") || ($ConnectionType eq "both"));
401: }
1.161 foxr 402:
403:
1.156 foxr 404: #
405: # ReadManagerTable: Reads in the current manager table. For now this is
406: # done on each manager authentication because:
407: # - These authentications are not frequent
408: # - This allows dynamic changes to the manager table
409: # without the need to signal to the lond.
410: #
411: sub ReadManagerTable {
412:
1.412 foxr 413: &Debug("Reading manager table");
1.156 foxr 414: # Clean out the old table first..
415:
1.166 foxr 416: foreach my $key (keys %managers) {
417: delete $managers{$key};
418: }
419:
420: my $tablename = $perlvar{'lonTabDir'}."/managers.tab";
421: if (!open (MANAGERS, $tablename)) {
422: logthis('<font color="red">No manager table. Nobody can manage!!</font>');
423: return;
424: }
425: while(my $host = <MANAGERS>) {
426: chomp($host);
427: if ($host =~ "^#") { # Comment line.
428: next;
429: }
1.368 albertel 430: if (!defined &Apache::lonnet::get_host_ip($host)) { # This is a non cluster member
1.161 foxr 431: # The entry is of the form:
432: # cluname:hostname
433: # cluname - A 'cluster hostname' is needed in order to negotiate
434: # the host key.
435: # hostname- The dns name of the host.
436: #
1.166 foxr 437: my($cluname, $dnsname) = split(/:/, $host);
438:
439: my $ip = gethostbyname($dnsname);
440: if(defined($ip)) { # bad names don't deserve entry.
441: my $hostip = inet_ntoa($ip);
442: $managers{$hostip} = $cluname;
443: logthis('<font color="green"> registering manager '.
444: "$dnsname as $cluname with $hostip </font>\n");
445: }
446: } else {
447: logthis('<font color="green"> existing host'." $host</font>\n");
1.368 albertel 448: $managers{&Apache::lonnet::get_host_ip($host)} = $host; # Use info from cluster tab if clumemeber
1.166 foxr 449: }
450: }
1.156 foxr 451: }
1.140 foxr 452:
453: #
454: # ValidManager: Determines if a given certificate represents a valid manager.
455: # in this primitive implementation, the 'certificate' is
456: # just the connecting loncapa client name. This is checked
457: # against a valid client list in the configuration.
458: #
459: #
460: sub ValidManager {
461: my $certificate = shift;
462:
1.163 foxr 463: return isManager;
1.140 foxr 464: }
465: #
1.143 foxr 466: # CopyFile: Called as part of the process of installing a
467: # new configuration file. This function copies an existing
468: # file to a backup file.
469: # Parameters:
470: # oldfile - Name of the file to backup.
471: # newfile - Name of the backup file.
472: # Return:
473: # 0 - Failure (errno has failure reason).
474: # 1 - Success.
475: #
476: sub CopyFile {
1.192 foxr 477:
478: my ($oldfile, $newfile) = @_;
1.143 foxr 479:
1.281 matthew 480: if (! copy($oldfile,$newfile)) {
481: return 0;
1.143 foxr 482: }
1.281 matthew 483: chmod(0660, $newfile);
484: return 1;
1.143 foxr 485: }
1.157 foxr 486: #
487: # Host files are passed out with externally visible host IPs.
488: # If, for example, we are behind a fire-wall or NAT host, our
489: # internally visible IP may be different than the externally
490: # visible IP. Therefore, we always adjust the contents of the
491: # host file so that the entry for ME is the IP that we believe
492: # we have. At present, this is defined as the entry that
493: # DNS has for us. If by some chance we are not able to get a
494: # DNS translation for us, then we assume that the host.tab file
495: # is correct.
496: # BUGBUGBUG - in the future, we really should see if we can
497: # easily query the interface(s) instead.
498: # Parameter(s):
499: # contents - The contents of the host.tab to check.
500: # Returns:
501: # newcontents - The adjusted contents.
502: #
503: #
504: sub AdjustHostContents {
505: my $contents = shift;
506: my $adjusted;
507: my $me = $perlvar{'lonHostID'};
508:
1.354 albertel 509: foreach my $line (split(/\n/,$contents)) {
1.157 foxr 510: if(!(($line eq "") || ($line =~ /^ *\#/) || ($line =~ /^ *$/))) {
511: chomp($line);
512: my ($id,$domain,$role,$name,$ip,$maxcon,$idleto,$mincon)=split(/:/,$line);
513: if ($id eq $me) {
1.354 albertel 514: my $ip = gethostbyname($name);
515: my $ipnew = inet_ntoa($ip);
516: $ip = $ipnew;
1.157 foxr 517: # Reconstruct the host line and append to adjusted:
518:
1.354 albertel 519: my $newline = "$id:$domain:$role:$name:$ip";
520: if($maxcon ne "") { # Not all hosts have loncnew tuning params
521: $newline .= ":$maxcon:$idleto:$mincon";
522: }
523: $adjusted .= $newline."\n";
1.157 foxr 524:
1.354 albertel 525: } else { # Not me, pass unmodified.
526: $adjusted .= $line."\n";
527: }
1.157 foxr 528: } else { # Blank or comment never re-written.
529: $adjusted .= $line."\n"; # Pass blanks and comments as is.
530: }
1.354 albertel 531: }
532: return $adjusted;
1.157 foxr 533: }
1.143 foxr 534: #
535: # InstallFile: Called to install an administrative file:
1.412 foxr 536: # - The file is created int a temp directory called <name>.tmp
537: # - lcinstall file is called to install the file.
538: # since the web app has no direct write access to the table directory
1.143 foxr 539: #
540: # Parameters:
541: # Name of the file
542: # File Contents.
543: # Return:
544: # nonzero - success.
545: # 0 - failure and $! has an errno.
1.412 foxr 546: # Assumptions:
547: # File installtion is a relatively infrequent
1.143 foxr 548: #
549: sub InstallFile {
1.192 foxr 550:
551: my ($Filename, $Contents) = @_;
1.412 foxr 552: # my $TempFile = $Filename.".tmp";
553: my $exedir = $perlvar{'lonDaemons'};
554: my $tmpdir = $exedir.'/tmp/';
555: my $TempFile = $tmpdir."TempTableFile.tmp";
1.143 foxr 556:
557: # Open the file for write:
558:
559: my $fh = IO::File->new("> $TempFile"); # Write to temp.
560: if(!(defined $fh)) {
561: &logthis('<font color="red"> Unable to create '.$TempFile."</font>");
562: return 0;
563: }
564: # write the contents of the file:
565:
566: print $fh ($Contents);
567: $fh->close; # In case we ever have a filesystem w. locking
568:
1.412 foxr 569: chmod(0664, $TempFile); # Everyone can write it.
570:
571: # Use lcinstall file to put the file in the table directory...
572:
573: &Debug("Opening pipe to $exedir/lcinstallfile $TempFile $Filename");
574: my $pf = IO::File->new("| $exedir/lcinstallfile $TempFile $Filename > $exedir/logs/lcinstallfile.log");
575: close $pf;
576: my $err = $?;
577: &Debug("Status is $err");
578: if ($err != 0) {
579: my $msg = $err;
580: if ($err < @installerrors) {
581: $msg = $installerrors[$err];
582: }
583: &logthis("Install failed for table file $Filename : $msg");
584: return 0;
585: }
586:
587: # Remove the temp file:
1.143 foxr 588:
1.412 foxr 589: unlink($TempFile);
1.143 foxr 590:
591: return 1;
592: }
1.200 matthew 593:
594:
1.169 foxr 595: #
596: # ConfigFileFromSelector: converts a configuration file selector
1.411 foxr 597: # into a configuration file pathname.
598: # It's probably no longer necessary to preserve
599: # special handling of hosts or domain as those
600: # files have been superceded by dns_hosts, dns_domain.
601: # The default action is just to prepend the directory
602: # and append .tab
603: #
1.169 foxr 604: #
605: # Parameters:
606: # selector - Configuration file selector.
607: # Returns:
608: # Full path to the file or undef if the selector is invalid.
609: #
610: sub ConfigFileFromSelector {
611: my $selector = shift;
612: my $tablefile;
613:
614: my $tabledir = $perlvar{'lonTabDir'}.'/';
615: if ($selector eq "hosts") {
616: $tablefile = $tabledir."hosts.tab";
617: } elsif ($selector eq "domain") {
618: $tablefile = $tabledir."domain.tab";
619: } else {
1.411 foxr 620: $tablefile = $tabledir.$selector.'.tab';
1.169 foxr 621: }
622: return $tablefile;
1.143 foxr 623:
1.169 foxr 624: }
1.143 foxr 625: #
1.141 foxr 626: # PushFile: Called to do an administrative push of a file.
627: # - Ensure the file being pushed is one we support.
628: # - Backup the old file to <filename.saved>
629: # - Separate the contents of the new file out from the
630: # rest of the request.
631: # - Write the new file.
632: # Parameter:
633: # Request - The entire user request. This consists of a : separated
634: # string pushfile:tablename:contents.
635: # NOTE: The contents may have :'s in it as well making things a bit
636: # more interesting... but not much.
637: # Returns:
638: # String to send to client ("ok" or "refused" if bad file).
639: #
640: sub PushFile {
641: my $request = shift;
642: my ($command, $filename, $contents) = split(":", $request, 3);
1.412 foxr 643: &Debug("PushFile");
1.141 foxr 644:
645: # At this point in time, pushes for only the following tables are
646: # supported:
647: # hosts.tab ($filename eq host).
648: # domain.tab ($filename eq domain).
649: # Construct the destination filename or reject the request.
650: #
651: # lonManage is supposed to ensure this, however this session could be
652: # part of some elaborate spoof that managed somehow to authenticate.
653: #
654:
1.169 foxr 655:
656: my $tablefile = ConfigFileFromSelector($filename);
657: if(! (defined $tablefile)) {
1.141 foxr 658: return "refused";
659: }
1.412 foxr 660:
1.157 foxr 661: # If the file being pushed is the host file, we adjust the entry for ourself so that the
662: # IP will be our current IP as looked up in dns. Note this is only 99% good as it's possible
663: # to conceive of conditions where we don't have a DNS entry locally. This is possible in a
664: # network sense but it doesn't make much sense in a LonCAPA sense so we ignore (for now)
665: # that possibilty.
666:
667: if($filename eq "host") {
668: $contents = AdjustHostContents($contents);
669: }
670:
1.141 foxr 671: # Install the new file:
672:
1.412 foxr 673: &logthis("Installing new $tablefile contents:\n$contents");
1.143 foxr 674: if(!InstallFile($tablefile, $contents)) {
675: &logthis('<font color="red"> Pushfile: unable to install '
1.145 foxr 676: .$tablefile." $! </font>");
1.143 foxr 677: return "error:$!";
1.224 foxr 678: } else {
1.143 foxr 679: &logthis('<font color="green"> Installed new '.$tablefile
680: ."</font>");
681:
682: }
683:
1.141 foxr 684:
685: # Indicate success:
686:
687: return "ok";
688:
689: }
1.145 foxr 690:
691: #
692: # Called to re-init either lonc or lond.
693: #
694: # Parameters:
695: # request - The full request by the client. This is of the form
696: # reinit:<process>
697: # where <process> is allowed to be either of
698: # lonc or lond
699: #
700: # Returns:
701: # The string to be sent back to the client either:
702: # ok - Everything worked just fine.
703: # error:why - There was a failure and why describes the reason.
704: #
705: #
706: sub ReinitProcess {
707: my $request = shift;
708:
1.146 foxr 709:
710: # separate the request (reinit) from the process identifier and
711: # validate it producing the name of the .pid file for the process.
712: #
713: #
714: my ($junk, $process) = split(":", $request);
1.147 foxr 715: my $processpidfile = $perlvar{'lonDaemons'}.'/logs/';
1.146 foxr 716: if($process eq 'lonc') {
717: $processpidfile = $processpidfile."lonc.pid";
1.147 foxr 718: if (!open(PIDFILE, "< $processpidfile")) {
719: return "error:Open failed for $processpidfile";
720: }
721: my $loncpid = <PIDFILE>;
722: close(PIDFILE);
723: logthis('<font color="red"> Reinitializing lonc pid='.$loncpid
724: ."</font>");
725: kill("USR2", $loncpid);
1.146 foxr 726: } elsif ($process eq 'lond') {
1.147 foxr 727: logthis('<font color="red"> Reinitializing self (lond) </font>');
728: &UpdateHosts; # Lond is us!!
1.146 foxr 729: } else {
730: &logthis('<font color="yellow" Invalid reinit request for '.$process
731: ."</font>");
732: return "error:Invalid process identifier $process";
733: }
1.145 foxr 734: return 'ok';
735: }
1.168 foxr 736: # Validate a line in a configuration file edit script:
737: # Validation includes:
738: # - Ensuring the command is valid.
739: # - Ensuring the command has sufficient parameters
740: # Parameters:
741: # scriptline - A line to validate (\n has been stripped for what it's worth).
1.167 foxr 742: #
1.168 foxr 743: # Return:
744: # 0 - Invalid scriptline.
745: # 1 - Valid scriptline
746: # NOTE:
747: # Only the command syntax is checked, not the executability of the
748: # command.
749: #
750: sub isValidEditCommand {
751: my $scriptline = shift;
752:
753: # Line elements are pipe separated:
754:
755: my ($command, $key, $newline) = split(/\|/, $scriptline);
756: &logthis('<font color="green"> isValideditCommand checking: '.
757: "Command = '$command', Key = '$key', Newline = '$newline' </font>\n");
758:
759: if ($command eq "delete") {
760: #
761: # key with no newline.
762: #
763: if( ($key eq "") || ($newline ne "")) {
764: return 0; # Must have key but no newline.
765: } else {
766: return 1; # Valid syntax.
767: }
1.169 foxr 768: } elsif ($command eq "replace") {
1.168 foxr 769: #
770: # key and newline:
771: #
772: if (($key eq "") || ($newline eq "")) {
773: return 0;
774: } else {
775: return 1;
776: }
1.169 foxr 777: } elsif ($command eq "append") {
778: if (($key ne "") && ($newline eq "")) {
779: return 1;
780: } else {
781: return 0;
782: }
1.168 foxr 783: } else {
784: return 0; # Invalid command.
785: }
786: return 0; # Should not get here!!!
787: }
1.169 foxr 788: #
789: # ApplyEdit - Applies an edit command to a line in a configuration
790: # file. It is the caller's responsiblity to validate the
791: # edit line.
792: # Parameters:
793: # $directive - A single edit directive to apply.
794: # Edit directives are of the form:
795: # append|newline - Appends a new line to the file.
796: # replace|key|newline - Replaces the line with key value 'key'
797: # delete|key - Deletes the line with key value 'key'.
798: # $editor - A config file editor object that contains the
799: # file being edited.
800: #
801: sub ApplyEdit {
1.192 foxr 802:
803: my ($directive, $editor) = @_;
1.169 foxr 804:
805: # Break the directive down into its command and its parameters
806: # (at most two at this point. The meaning of the parameters, if in fact
807: # they exist depends on the command).
808:
809: my ($command, $p1, $p2) = split(/\|/, $directive);
810:
811: if($command eq "append") {
812: $editor->Append($p1); # p1 - key p2 null.
813: } elsif ($command eq "replace") {
814: $editor->ReplaceLine($p1, $p2); # p1 - key p2 = newline.
815: } elsif ($command eq "delete") {
816: $editor->DeleteLine($p1); # p1 - key p2 null.
817: } else { # Should not get here!!!
818: die "Invalid command given to ApplyEdit $command"
819: }
820: }
821: #
822: # AdjustOurHost:
823: # Adjusts a host file stored in a configuration file editor object
824: # for the true IP address of this host. This is necessary for hosts
825: # that live behind a firewall.
826: # Those hosts have a publicly distributed IP of the firewall, but
827: # internally must use their actual IP. We assume that a given
828: # host only has a single IP interface for now.
829: # Formal Parameters:
830: # editor - The configuration file editor to adjust. This
831: # editor is assumed to contain a hosts.tab file.
832: # Strategy:
833: # - Figure out our hostname.
834: # - Lookup the entry for this host.
835: # - Modify the line to contain our IP
836: # - Do a replace for this host.
837: sub AdjustOurHost {
838: my $editor = shift;
839:
840: # figure out who I am.
841:
842: my $myHostName = $perlvar{'lonHostID'}; # LonCAPA hostname.
843:
844: # Get my host file entry.
845:
846: my $ConfigLine = $editor->Find($myHostName);
847: if(! (defined $ConfigLine)) {
848: die "AdjustOurHost - no entry for me in hosts file $myHostName";
849: }
850: # figure out my IP:
851: # Use the config line to get my hostname.
852: # Use gethostbyname to translate that into an IP address.
853: #
1.338 albertel 854: my ($id,$domain,$role,$name,$maxcon,$idleto,$mincon) = split(/:/,$ConfigLine);
1.169 foxr 855: #
856: # Reassemble the config line from the elements in the list.
857: # Note that if the loncnew items were not present before, they will
858: # be now even if they would be empty
859: #
860: my $newConfigLine = $id;
1.338 albertel 861: foreach my $item ($domain, $role, $name, $maxcon, $idleto, $mincon) {
1.169 foxr 862: $newConfigLine .= ":".$item;
863: }
864: # Replace the line:
865:
866: $editor->ReplaceLine($id, $newConfigLine);
867:
868: }
869: #
870: # ReplaceConfigFile:
871: # Replaces a configuration file with the contents of a
872: # configuration file editor object.
873: # This is done by:
874: # - Copying the target file to <filename>.old
875: # - Writing the new file to <filename>.tmp
876: # - Moving <filename.tmp> -> <filename>
877: # This laborious process ensures that the system is never without
878: # a configuration file that's at least valid (even if the contents
879: # may be dated).
880: # Parameters:
881: # filename - Name of the file to modify... this is a full path.
882: # editor - Editor containing the file.
883: #
884: sub ReplaceConfigFile {
1.192 foxr 885:
886: my ($filename, $editor) = @_;
1.168 foxr 887:
1.169 foxr 888: CopyFile ($filename, $filename.".old");
889:
890: my $contents = $editor->Get(); # Get the contents of the file.
891:
892: InstallFile($filename, $contents);
893: }
1.168 foxr 894: #
895: #
896: # Called to edit a configuration table file
1.167 foxr 897: # Parameters:
898: # request - The entire command/request sent by lonc or lonManage
899: # Return:
900: # The reply to send to the client.
1.168 foxr 901: #
1.167 foxr 902: sub EditFile {
903: my $request = shift;
904:
905: # Split the command into it's pieces: edit:filetype:script
906:
1.339 albertel 907: my ($cmd, $filetype, $script) = split(/:/, $request,3); # : in script
1.167 foxr 908:
909: # Check the pre-coditions for success:
910:
1.339 albertel 911: if($cmd != "edit") { # Something is amiss afoot alack.
1.167 foxr 912: return "error:edit request detected, but request != 'edit'\n";
913: }
914: if( ($filetype ne "hosts") &&
915: ($filetype ne "domain")) {
916: return "error:edit requested with invalid file specifier: $filetype \n";
917: }
918:
919: # Split the edit script and check it's validity.
1.168 foxr 920:
921: my @scriptlines = split(/\n/, $script); # one line per element.
922: my $linecount = scalar(@scriptlines);
923: for(my $i = 0; $i < $linecount; $i++) {
924: chomp($scriptlines[$i]);
925: if(!isValidEditCommand($scriptlines[$i])) {
926: return "error:edit with bad script line: '$scriptlines[$i]' \n";
927: }
928: }
1.145 foxr 929:
1.167 foxr 930: # Execute the edit operation.
1.169 foxr 931: # - Create a config file editor for the appropriate file and
932: # - execute each command in the script:
933: #
934: my $configfile = ConfigFileFromSelector($filetype);
935: if (!(defined $configfile)) {
936: return "refused\n";
937: }
938: my $editor = ConfigFileEdit->new($configfile);
1.167 foxr 939:
1.169 foxr 940: for (my $i = 0; $i < $linecount; $i++) {
941: ApplyEdit($scriptlines[$i], $editor);
942: }
943: # If the file is the host file, ensure that our host is
944: # adjusted to have our ip:
945: #
946: if($filetype eq "host") {
947: AdjustOurHost($editor);
948: }
949: # Finally replace the current file with our file.
950: #
951: ReplaceConfigFile($configfile, $editor);
1.167 foxr 952:
953: return "ok\n";
954: }
1.207 foxr 955:
1.255 foxr 956: # read_profile
957: #
958: # Returns a set of specific entries from a user's profile file.
959: # this is a utility function that is used by both get_profile_entry and
960: # get_profile_entry_encrypted.
961: #
962: # Parameters:
963: # udom - Domain in which the user exists.
964: # uname - User's account name (loncapa account)
965: # namespace - The profile namespace to open.
966: # what - A set of & separated queries.
967: # Returns:
968: # If all ok: - The string that needs to be shipped back to the user.
969: # If failure - A string that starts with error: followed by the failure
970: # reason.. note that this probabyl gets shipped back to the
971: # user as well.
972: #
973: sub read_profile {
974: my ($udom, $uname, $namespace, $what) = @_;
975:
976: my $hashref = &tie_user_hash($udom, $uname, $namespace,
977: &GDBM_READER());
978: if ($hashref) {
979: my @queries=split(/\&/,$what);
1.440 raeburn 980: if ($namespace eq 'roles') {
981: @queries = map { &unescape($_); } @queries;
982: }
1.255 foxr 983: my $qresult='';
984:
985: for (my $i=0;$i<=$#queries;$i++) {
986: $qresult.="$hashref->{$queries[$i]}&"; # Presumably failure gives empty string.
987: }
988: $qresult=~s/\&$//; # Remove trailing & from last lookup.
1.311 albertel 989: if (&untie_user_hash($hashref)) {
1.255 foxr 990: return $qresult;
991: } else {
992: return "error: ".($!+0)." untie (GDBM) Failed";
993: }
994: } else {
995: if ($!+0 == 2) {
996: return "error:No such file or GDBM reported bad block error";
997: } else {
998: return "error: ".($!+0)." tie (GDBM) Failed";
999: }
1000: }
1001:
1002: }
1.214 foxr 1003: #--------------------- Request Handlers --------------------------------------------
1004: #
1.215 foxr 1005: # By convention each request handler registers itself prior to the sub
1006: # declaration:
1.214 foxr 1007: #
1008:
1.216 foxr 1009: #++
1010: #
1.214 foxr 1011: # Handles ping requests.
1012: # Parameters:
1013: # $cmd - the actual keyword that invoked us.
1014: # $tail - the tail of the request that invoked us.
1015: # $replyfd- File descriptor connected to the client
1016: # Implicit Inputs:
1017: # $currenthostid - Global variable that carries the name of the host we are
1018: # known as.
1019: # Returns:
1020: # 1 - Ok to continue processing.
1021: # 0 - Program should exit.
1022: # Side effects:
1023: # Reply information is sent to the client.
1024: sub ping_handler {
1025: my ($cmd, $tail, $client) = @_;
1026: Debug("$cmd $tail $client .. $currenthostid:");
1027:
1.387 albertel 1028: Reply( $client,\$currenthostid,"$cmd:$tail");
1.214 foxr 1029:
1030: return 1;
1031: }
1032: ®ister_handler("ping", \&ping_handler, 0, 1, 1); # Ping unencoded, client or manager.
1033:
1.216 foxr 1034: #++
1.215 foxr 1035: #
1036: # Handles pong requests. Pong replies with our current host id, and
1037: # the results of a ping sent to us via our lonc.
1038: #
1039: # Parameters:
1040: # $cmd - the actual keyword that invoked us.
1041: # $tail - the tail of the request that invoked us.
1042: # $replyfd- File descriptor connected to the client
1043: # Implicit Inputs:
1044: # $currenthostid - Global variable that carries the name of the host we are
1045: # connected to.
1046: # Returns:
1047: # 1 - Ok to continue processing.
1048: # 0 - Program should exit.
1049: # Side effects:
1050: # Reply information is sent to the client.
1051: sub pong_handler {
1052: my ($cmd, $tail, $replyfd) = @_;
1053:
1.365 albertel 1054: my $reply=&Apache::lonnet::reply("ping",$clientname);
1.215 foxr 1055: &Reply( $replyfd, "$currenthostid:$reply\n", "$cmd:$tail");
1056: return 1;
1057: }
1058: ®ister_handler("pong", \&pong_handler, 0, 1, 1); # Pong unencoded, client or manager
1059:
1.216 foxr 1060: #++
1061: # Called to establish an encrypted session key with the remote client.
1062: # Note that with secure lond, in most cases this function is never
1063: # invoked. Instead, the secure session key is established either
1064: # via a local file that's locked down tight and only lives for a short
1065: # time, or via an ssl tunnel...and is generated from a bunch-o-random
1066: # bits from /dev/urandom, rather than the predictable pattern used by
1067: # by this sub. This sub is only used in the old-style insecure
1068: # key negotiation.
1069: # Parameters:
1070: # $cmd - the actual keyword that invoked us.
1071: # $tail - the tail of the request that invoked us.
1072: # $replyfd- File descriptor connected to the client
1073: # Implicit Inputs:
1074: # $currenthostid - Global variable that carries the name of the host
1075: # known as.
1.448 ! raeburn 1076: # $clientname - Global variable that carries the name of the host we're connected to.
1.216 foxr 1077: # Returns:
1078: # 1 - Ok to continue processing.
1079: # 0 - Program should exit.
1080: # Implicit Outputs:
1081: # Reply information is sent to the client.
1082: # $cipher is set with a reference to a new IDEA encryption object.
1083: #
1084: sub establish_key_handler {
1085: my ($cmd, $tail, $replyfd) = @_;
1086:
1087: my $buildkey=time.$$.int(rand 100000);
1088: $buildkey=~tr/1-6/A-F/;
1089: $buildkey=int(rand 100000).$buildkey.int(rand 100000);
1090: my $key=$currenthostid.$clientname;
1091: $key=~tr/a-z/A-Z/;
1092: $key=~tr/G-P/0-9/;
1093: $key=~tr/Q-Z/0-9/;
1094: $key=$key.$buildkey.$key.$buildkey.$key.$buildkey;
1095: $key=substr($key,0,32);
1096: my $cipherkey=pack("H32",$key);
1097: $cipher=new IDEA $cipherkey;
1.387 albertel 1098: &Reply($replyfd, \$buildkey, "$cmd:$tail");
1.216 foxr 1099:
1100: return 1;
1101:
1102: }
1103: ®ister_handler("ekey", \&establish_key_handler, 0, 1,1);
1104:
1.217 foxr 1105: # Handler for the load command. Returns the current system load average
1106: # to the requestor.
1107: #
1108: # Parameters:
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: # Implicit Inputs:
1113: # $currenthostid - Global variable that carries the name of the host
1114: # known as.
1.448 ! raeburn 1115: # $clientname - Global variable that carries the name of the host we're connected to.
1.217 foxr 1116: # Returns:
1117: # 1 - Ok to continue processing.
1118: # 0 - Program should exit.
1119: # Side effects:
1120: # Reply information is sent to the client.
1121: sub load_handler {
1122: my ($cmd, $tail, $replyfd) = @_;
1123:
1124: # Get the load average from /proc/loadavg and calculate it as a percentage of
1125: # the allowed load limit as set by the perl global variable lonLoadLim
1126:
1127: my $loadavg;
1128: my $loadfile=IO::File->new('/proc/loadavg');
1129:
1130: $loadavg=<$loadfile>;
1131: $loadavg =~ s/\s.*//g; # Extract the first field only.
1132:
1133: my $loadpercent=100*$loadavg/$perlvar{'lonLoadLim'};
1134:
1.387 albertel 1135: &Reply( $replyfd, \$loadpercent, "$cmd:$tail");
1.217 foxr 1136:
1137: return 1;
1138: }
1.263 albertel 1139: ®ister_handler("load", \&load_handler, 0, 1, 0);
1.217 foxr 1140:
1141: #
1142: # Process the userload request. This sub returns to the client the current
1143: # user load average. It can be invoked either by clients or managers.
1144: #
1145: # Parameters:
1146: # $cmd - the actual keyword that invoked us.
1147: # $tail - the tail of the request that invoked us.
1148: # $replyfd- File descriptor connected to the client
1149: # Implicit Inputs:
1150: # $currenthostid - Global variable that carries the name of the host
1151: # known as.
1.448 ! raeburn 1152: # $clientname - Global variable that carries the name of the host we're connected to.
1.217 foxr 1153: # Returns:
1154: # 1 - Ok to continue processing.
1155: # 0 - Program should exit
1156: # Implicit inputs:
1157: # whatever the userload() function requires.
1158: # Implicit outputs:
1159: # the reply is written to the client.
1160: #
1161: sub user_load_handler {
1162: my ($cmd, $tail, $replyfd) = @_;
1163:
1.365 albertel 1164: my $userloadpercent=&Apache::lonnet::userload();
1.387 albertel 1165: &Reply($replyfd, \$userloadpercent, "$cmd:$tail");
1.217 foxr 1166:
1167: return 1;
1168: }
1.263 albertel 1169: ®ister_handler("userload", \&user_load_handler, 0, 1, 0);
1.217 foxr 1170:
1.218 foxr 1171: # Process a request for the authorization type of a user:
1172: # (userauth).
1173: #
1174: # Parameters:
1175: # $cmd - the actual keyword that invoked us.
1176: # $tail - the tail of the request that invoked us.
1177: # $replyfd- File descriptor connected to the client
1178: # Returns:
1179: # 1 - Ok to continue processing.
1180: # 0 - Program should exit
1181: # Implicit outputs:
1182: # The user authorization type is written to the client.
1183: #
1184: sub user_authorization_type {
1185: my ($cmd, $tail, $replyfd) = @_;
1186:
1187: my $userinput = "$cmd:$tail";
1188:
1189: # Pull the domain and username out of the command tail.
1.222 foxr 1190: # and call get_auth_type to determine the authentication type.
1.218 foxr 1191:
1192: my ($udom,$uname)=split(/:/,$tail);
1.222 foxr 1193: my $result = &get_auth_type($udom, $uname);
1.218 foxr 1194: if($result eq "nouser") {
1195: &Failure( $replyfd, "unknown_user\n", $userinput);
1196: } else {
1197: #
1.222 foxr 1198: # We only want to pass the second field from get_auth_type
1.218 foxr 1199: # for ^krb.. otherwise we'll be handing out the encrypted
1200: # password for internals e.g.
1201: #
1202: my ($type,$otherinfo) = split(/:/,$result);
1203: if($type =~ /^krb/) {
1204: $type = $result;
1.269 raeburn 1205: } else {
1206: $type .= ':';
1207: }
1.387 albertel 1208: &Reply( $replyfd, \$type, $userinput);
1.218 foxr 1209: }
1210:
1211: return 1;
1212: }
1213: ®ister_handler("currentauth", \&user_authorization_type, 1, 1, 0);
1214:
1215: # Process a request by a manager to push a hosts or domain table
1216: # to us. We pick apart the command and pass it on to the subs
1217: # that already exist to do this.
1218: #
1219: # Parameters:
1220: # $cmd - the actual keyword that invoked us.
1221: # $tail - the tail of the request that invoked us.
1222: # $client - File descriptor connected to the client
1223: # Returns:
1224: # 1 - Ok to continue processing.
1225: # 0 - Program should exit
1226: # Implicit Output:
1227: # a reply is written to the client.
1228: sub push_file_handler {
1229: my ($cmd, $tail, $client) = @_;
1.412 foxr 1230: &Debug("In push file handler");
1.218 foxr 1231: my $userinput = "$cmd:$tail";
1232:
1233: # At this time we only know that the IP of our partner is a valid manager
1234: # the code below is a hook to do further authentication (e.g. to resolve
1235: # spoofing).
1236:
1237: my $cert = &GetCertificate($userinput);
1.412 foxr 1238: if(&ValidManager($cert)) {
1239: &Debug("Valid manager: $client");
1.218 foxr 1240:
1241: # Now presumably we have the bona fides of both the peer host and the
1242: # process making the request.
1243:
1244: my $reply = &PushFile($userinput);
1.387 albertel 1245: &Reply($client, \$reply, $userinput);
1.218 foxr 1246:
1247: } else {
1.412 foxr 1248: &logthis("push_file_handler $client is not valid");
1.218 foxr 1249: &Failure( $client, "refused\n", $userinput);
1250: }
1.219 foxr 1251: return 1;
1.218 foxr 1252: }
1253: ®ister_handler("pushfile", \&push_file_handler, 1, 0, 1);
1254:
1.399 raeburn 1255: # The du_handler routine should be considered obsolete and is retained
1256: # for communication with legacy servers. Please see the du2_handler.
1.243 banghart 1257: #
1.399 raeburn 1258: # du - list the disk usage of a directory recursively.
1.243 banghart 1259: #
1260: # note: stolen code from the ls file handler
1261: # under construction by Rick Banghart
1262: # .
1263: # Parameters:
1264: # $cmd - The command that dispatched us (du).
1265: # $ududir - The directory path to list... I'm not sure what this
1266: # is relative as things like ls:. return e.g.
1267: # no_such_dir.
1268: # $client - Socket open on the client.
1269: # Returns:
1270: # 1 - indicating that the daemon should not disconnect.
1271: # Side Effects:
1272: # The reply is written to $client.
1273: #
1274: sub du_handler {
1275: my ($cmd, $ududir, $client) = @_;
1.339 albertel 1276: ($ududir) = split(/:/,$ududir); # Make 'telnet' testing easier.
1.251 foxr 1277: my $userinput = "$cmd:$ududir";
1278:
1.245 albertel 1279: if ($ududir=~/\.\./ || $ududir!~m|^/home/httpd/|) {
1280: &Failure($client,"refused\n","$cmd:$ududir");
1281: return 1;
1282: }
1.249 foxr 1283: # Since $ududir could have some nasties in it,
1284: # we will require that ududir is a valid
1285: # directory. Just in case someone tries to
1286: # slip us a line like .;(cd /home/httpd rm -rf*)
1287: # etc.
1288: #
1289: if (-d $ududir) {
1.292 albertel 1290: my $total_size=0;
1291: my $code=sub {
1292: if ($_=~/\.\d+\./) { return;}
1293: if ($_=~/\.meta$/) { return;}
1.362 albertel 1294: if (-d $_) { return;}
1.292 albertel 1295: $total_size+=(stat($_))[7];
1296: };
1.295 raeburn 1297: chdir($ududir);
1.292 albertel 1298: find($code,$ududir);
1299: $total_size=int($total_size/1024);
1.387 albertel 1300: &Reply($client,\$total_size,"$cmd:$ududir");
1.249 foxr 1301: } else {
1.251 foxr 1302: &Failure($client, "bad_directory:$ududir\n","$cmd:$ududir");
1.249 foxr 1303: }
1.243 banghart 1304: return 1;
1305: }
1306: ®ister_handler("du", \&du_handler, 0, 1, 0);
1.218 foxr 1307:
1.399 raeburn 1308: # Please also see the du_handler, which is obsoleted by du2.
1309: # du2_handler differs from du_handler in that required path to directory
1310: # provided by &propath() is prepended in the handler instead of on the
1311: # client side.
1.239 foxr 1312: #
1.399 raeburn 1313: # du2 - list the disk usage of a directory recursively.
1314: #
1315: # Parameters:
1316: # $cmd - The command that dispatched us (du).
1317: # $tail - The tail of the request that invoked us.
1318: # $tail is a : separated list of the following:
1319: # - $ududir - directory path to list (before prepending)
1320: # - $getpropath = 1 if &propath() should prepend
1321: # - $uname - username to use for &propath or user dir
1322: # - $udom - domain to use for &propath or user dir
1323: # All are escaped.
1324: # $client - Socket open on the client.
1325: # Returns:
1326: # 1 - indicating that the daemon should not disconnect.
1327: # Side Effects:
1328: # The reply is written to $client.
1329: #
1330:
1331: sub du2_handler {
1332: my ($cmd, $tail, $client) = @_;
1333: my ($ududir,$getpropath,$uname,$udom) = map { &unescape($_) } (split(/:/, $tail));
1334: my $userinput = "$cmd:$tail";
1335: if (($ududir=~/\.\./) || (($ududir!~m|^/home/httpd/|) && (!$getpropath))) {
1336: &Failure($client,"refused\n","$cmd:$tail");
1337: return 1;
1338: }
1339: if ($getpropath) {
1340: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1341: $ududir = &propath($udom,$uname).'/'.$ududir;
1342: } else {
1343: &Failure($client,"refused\n","$cmd:$tail");
1344: return 1;
1345: }
1346: }
1347: # Since $ududir could have some nasties in it,
1348: # we will require that ududir is a valid
1349: # directory. Just in case someone tries to
1350: # slip us a line like .;(cd /home/httpd rm -rf*)
1351: # etc.
1352: #
1353: if (-d $ududir) {
1354: my $total_size=0;
1355: my $code=sub {
1356: if ($_=~/\.\d+\./) { return;}
1357: if ($_=~/\.meta$/) { return;}
1358: if (-d $_) { return;}
1359: $total_size+=(stat($_))[7];
1360: };
1361: chdir($ududir);
1362: find($code,$ududir);
1363: $total_size=int($total_size/1024);
1364: &Reply($client,\$total_size,"$cmd:$ududir");
1365: } else {
1366: &Failure($client, "bad_directory:$ududir\n","$cmd:$tail");
1367: }
1368: return 1;
1369: }
1370: ®ister_handler("du2", \&du2_handler, 0, 1, 0);
1371:
1372: #
1373: # The ls_handler routine should be considered obsolete and is retained
1374: # for communication with legacy servers. Please see the ls3_handler.
1.280 matthew 1375: #
1.239 foxr 1376: # ls - list the contents of a directory. For each file in the
1377: # selected directory the filename followed by the full output of
1378: # the stat function is returned. The returned info for each
1379: # file are separated by ':'. The stat fields are separated by &'s.
1380: # Parameters:
1381: # $cmd - The command that dispatched us (ls).
1382: # $ulsdir - The directory path to list... I'm not sure what this
1383: # is relative as things like ls:. return e.g.
1384: # no_such_dir.
1385: # $client - Socket open on the client.
1386: # Returns:
1387: # 1 - indicating that the daemon should not disconnect.
1388: # Side Effects:
1389: # The reply is written to $client.
1390: #
1391: sub ls_handler {
1.280 matthew 1392: # obsoleted by ls2_handler
1.239 foxr 1393: my ($cmd, $ulsdir, $client) = @_;
1394:
1395: my $userinput = "$cmd:$ulsdir";
1396:
1397: my $obs;
1398: my $rights;
1399: my $ulsout='';
1400: my $ulsfn;
1401: if (-e $ulsdir) {
1402: if(-d $ulsdir) {
1403: if (opendir(LSDIR,$ulsdir)) {
1404: while ($ulsfn=readdir(LSDIR)) {
1.291 albertel 1405: undef($obs);
1406: undef($rights);
1.239 foxr 1407: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1408: #We do some obsolete checking here
1409: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1410: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1411: my @obsolete=<FILE>;
1412: foreach my $obsolete (@obsolete) {
1.301 www 1413: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1.239 foxr 1414: if($obsolete =~ m|(<copyright>)(default)|) { $rights = 1; }
1415: }
1416: }
1417: $ulsout.=$ulsfn.'&'.join('&',@ulsstats);
1418: if($obs eq '1') { $ulsout.="&1"; }
1419: else { $ulsout.="&0"; }
1420: if($rights eq '1') { $ulsout.="&1:"; }
1421: else { $ulsout.="&0:"; }
1422: }
1423: closedir(LSDIR);
1424: }
1425: } else {
1426: my @ulsstats=stat($ulsdir);
1427: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1428: }
1429: } else {
1430: $ulsout='no_such_dir';
1431: }
1432: if ($ulsout eq '') { $ulsout='empty'; }
1.387 albertel 1433: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1.239 foxr 1434:
1435: return 1;
1436:
1437: }
1438: ®ister_handler("ls", \&ls_handler, 0, 1, 0);
1439:
1.399 raeburn 1440: # The ls2_handler routine should be considered obsolete and is retained
1441: # for communication with legacy servers. Please see the ls3_handler.
1442: # Please also see the ls_handler, which was itself obsoleted by ls2.
1.280 matthew 1443: # ls2_handler differs from ls_handler in that it escapes its return
1444: # values before concatenating them together with ':'s.
1445: #
1446: # ls2 - list the contents of a directory. For each file in the
1447: # selected directory the filename followed by the full output of
1448: # the stat function is returned. The returned info for each
1449: # file are separated by ':'. The stat fields are separated by &'s.
1450: # Parameters:
1451: # $cmd - The command that dispatched us (ls).
1452: # $ulsdir - The directory path to list... I'm not sure what this
1453: # is relative as things like ls:. return e.g.
1454: # no_such_dir.
1455: # $client - Socket open on the client.
1456: # Returns:
1457: # 1 - indicating that the daemon should not disconnect.
1458: # Side Effects:
1459: # The reply is written to $client.
1460: #
1461: sub ls2_handler {
1462: my ($cmd, $ulsdir, $client) = @_;
1463:
1464: my $userinput = "$cmd:$ulsdir";
1465:
1466: my $obs;
1467: my $rights;
1468: my $ulsout='';
1469: my $ulsfn;
1470: if (-e $ulsdir) {
1471: if(-d $ulsdir) {
1472: if (opendir(LSDIR,$ulsdir)) {
1473: while ($ulsfn=readdir(LSDIR)) {
1.291 albertel 1474: undef($obs);
1475: undef($rights);
1.280 matthew 1476: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1477: #We do some obsolete checking here
1478: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1479: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1480: my @obsolete=<FILE>;
1481: foreach my $obsolete (@obsolete) {
1.301 www 1482: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1.280 matthew 1483: if($obsolete =~ m|(<copyright>)(default)|) {
1484: $rights = 1;
1485: }
1486: }
1487: }
1488: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1489: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1490: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1491: $ulsout.= &escape($tmp).':';
1492: }
1493: closedir(LSDIR);
1494: }
1495: } else {
1496: my @ulsstats=stat($ulsdir);
1497: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1498: }
1499: } else {
1500: $ulsout='no_such_dir';
1501: }
1502: if ($ulsout eq '') { $ulsout='empty'; }
1.387 albertel 1503: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1.280 matthew 1504: return 1;
1505: }
1506: ®ister_handler("ls2", \&ls2_handler, 0, 1, 0);
1.399 raeburn 1507: #
1508: # ls3 - list the contents of a directory. For each file in the
1509: # selected directory the filename followed by the full output of
1510: # the stat function is returned. The returned info for each
1511: # file are separated by ':'. The stat fields are separated by &'s.
1512: # Parameters:
1513: # $cmd - The command that dispatched us (ls).
1514: # $tail - The tail of the request that invoked us.
1515: # $tail is a : separated list of the following:
1516: # - $ulsdir - directory path to list (before prepending)
1517: # - $getpropath = 1 if &propath() should prepend
1518: # - $getuserdir = 1 if path to user dir in lonUsers should
1519: # prepend
1520: # - $alternate_root - path to prepend
1521: # - $uname - username to use for &propath or user dir
1522: # - $udom - domain to use for &propath or user dir
1523: # All of these except $getpropath and &getuserdir are escaped.
1524: # no_such_dir.
1525: # $client - Socket open on the client.
1526: # Returns:
1527: # 1 - indicating that the daemon should not disconnect.
1528: # Side Effects:
1529: # The reply is written to $client.
1530: #
1531:
1532: sub ls3_handler {
1533: my ($cmd, $tail, $client) = @_;
1534: my $userinput = "$cmd:$tail";
1535: my ($ulsdir,$getpropath,$getuserdir,$alternate_root,$uname,$udom) =
1536: split(/:/,$tail);
1537: if (defined($ulsdir)) {
1538: $ulsdir = &unescape($ulsdir);
1539: }
1540: if (defined($alternate_root)) {
1541: $alternate_root = &unescape($alternate_root);
1542: }
1543: if (defined($uname)) {
1544: $uname = &unescape($uname);
1545: }
1546: if (defined($udom)) {
1547: $udom = &unescape($udom);
1548: }
1549:
1550: my $dir_root = $perlvar{'lonDocRoot'};
1551: if ($getpropath) {
1552: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1553: $dir_root = &propath($udom,$uname);
1554: $dir_root =~ s/\/$//;
1555: } else {
1556: &Failure($client,"refused\n","$cmd:$tail");
1557: return 1;
1558: }
1559: } elsif ($getuserdir) {
1560: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1561: my $subdir=$uname.'__';
1562: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
1563: $dir_root = $Apache::lonnet::perlvar{'lonUsersDir'}
1564: ."/$udom/$subdir/$uname";
1565: } else {
1566: &Failure($client,"refused\n","$cmd:$tail");
1567: return 1;
1568: }
1.400 raeburn 1569: } elsif ($alternate_root ne '') {
1.399 raeburn 1570: $dir_root = $alternate_root;
1571: }
1.408 raeburn 1572: if (($dir_root ne '') && ($dir_root ne '/')) {
1.400 raeburn 1573: if ($ulsdir =~ /^\//) {
1574: $ulsdir = $dir_root.$ulsdir;
1575: } else {
1576: $ulsdir = $dir_root.'/'.$ulsdir;
1577: }
1.399 raeburn 1578: }
1579: my $obs;
1580: my $rights;
1581: my $ulsout='';
1582: my $ulsfn;
1583: if (-e $ulsdir) {
1584: if(-d $ulsdir) {
1585: if (opendir(LSDIR,$ulsdir)) {
1586: while ($ulsfn=readdir(LSDIR)) {
1587: undef($obs);
1588: undef($rights);
1589: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1590: #We do some obsolete checking here
1591: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1592: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1593: my @obsolete=<FILE>;
1594: foreach my $obsolete (@obsolete) {
1595: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1596: if($obsolete =~ m|(<copyright>)(default)|) {
1597: $rights = 1;
1598: }
1599: }
1600: }
1601: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1602: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1603: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1604: $ulsout.= &escape($tmp).':';
1605: }
1606: closedir(LSDIR);
1607: }
1608: } else {
1609: my @ulsstats=stat($ulsdir);
1610: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1611: }
1612: } else {
1613: $ulsout='no_such_dir';
1.400 raeburn 1614: }
1615: if ($ulsout eq '') { $ulsout='empty'; }
1616: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1617: return 1;
1.399 raeburn 1618: }
1619: ®ister_handler("ls3", \&ls3_handler, 0, 1, 0);
1.280 matthew 1620:
1.410 raeburn 1621: sub server_timezone_handler {
1622: my ($cmd,$tail,$client) = @_;
1623: my $userinput = "$cmd:$tail";
1624: my $timezone;
1625: my $clockfile = '/etc/sysconfig/clock'; # Fedora/CentOS/SuSE
1626: my $tzfile = '/etc/timezone'; # Debian/Ubuntu
1627: if (-e $clockfile) {
1628: if (open(my $fh,"<$clockfile")) {
1629: while (<$fh>) {
1630: next if (/^[\#\s]/);
1631: if (/^(?:TIME)?ZONE\s*=\s*['"]?\s*([\w\/]+)/) {
1632: $timezone = $1;
1633: last;
1634: }
1635: }
1636: close($fh);
1637: }
1638: } elsif (-e $tzfile) {
1639: if (open(my $fh,"<$tzfile")) {
1640: $timezone = <$fh>;
1641: close($fh);
1642: chomp($timezone);
1643: if ($timezone =~ m{^Etc/(\w+)$}) {
1644: $timezone = $1;
1645: }
1646: }
1647: }
1648: &Reply($client,\$timezone,$userinput); # This supports debug logging.
1649: return 1;
1650: }
1651: ®ister_handler("servertimezone", \&server_timezone_handler, 0, 1, 0);
1652:
1.413 raeburn 1653: sub server_loncaparev_handler {
1654: my ($cmd,$tail,$client) = @_;
1655: my $userinput = "$cmd:$tail";
1656: &Reply($client,\$perlvar{'lonVersion'},$userinput);
1657: return 1;
1658: }
1659: ®ister_handler("serverloncaparev", \&server_loncaparev_handler, 0, 1, 0);
1660:
1.448 ! raeburn 1661: sub server_homeID_handler {
! 1662: my ($cmd,$tail,$client) = @_;
! 1663: my $userinput = "$cmd:$tail";
! 1664: &Reply($client,\$perlvar{'lonHostID'},$userinput);
! 1665: return 1;
! 1666: }
! 1667: ®ister_handler("serverhomeID", \&server_homeID_handler, 0, 1, 0);
! 1668:
1.218 foxr 1669: # Process a reinit request. Reinit requests that either
1670: # lonc or lond be reinitialized so that an updated
1671: # host.tab or domain.tab can be processed.
1672: #
1673: # Parameters:
1674: # $cmd - the actual keyword that invoked us.
1675: # $tail - the tail of the request that invoked us.
1676: # $client - File descriptor connected to the client
1677: # Returns:
1678: # 1 - Ok to continue processing.
1679: # 0 - Program should exit
1680: # Implicit output:
1681: # a reply is sent to the client.
1682: #
1683: sub reinit_process_handler {
1684: my ($cmd, $tail, $client) = @_;
1685:
1686: my $userinput = "$cmd:$tail";
1687:
1688: my $cert = &GetCertificate($userinput);
1689: if(&ValidManager($cert)) {
1690: chomp($userinput);
1691: my $reply = &ReinitProcess($userinput);
1.387 albertel 1692: &Reply( $client, \$reply, $userinput);
1.218 foxr 1693: } else {
1694: &Failure( $client, "refused\n", $userinput);
1695: }
1696: return 1;
1697: }
1698: ®ister_handler("reinit", \&reinit_process_handler, 1, 0, 1);
1699:
1700: # Process the editing script for a table edit operation.
1701: # the editing operation must be encrypted and requested by
1702: # a manager host.
1703: #
1704: # Parameters:
1705: # $cmd - the actual keyword that invoked us.
1706: # $tail - the tail of the request that invoked us.
1707: # $client - File descriptor connected to the client
1708: # Returns:
1709: # 1 - Ok to continue processing.
1710: # 0 - Program should exit
1711: # Implicit output:
1712: # a reply is sent to the client.
1713: #
1714: sub edit_table_handler {
1715: my ($command, $tail, $client) = @_;
1716:
1717: my $userinput = "$command:$tail";
1718:
1719: my $cert = &GetCertificate($userinput);
1720: if(&ValidManager($cert)) {
1721: my($filetype, $script) = split(/:/, $tail);
1722: if (($filetype eq "hosts") ||
1723: ($filetype eq "domain")) {
1724: if($script ne "") {
1725: &Reply($client, # BUGBUG - EditFile
1726: &EditFile($userinput), # could fail.
1727: $userinput);
1728: } else {
1729: &Failure($client,"refused\n",$userinput);
1730: }
1731: } else {
1732: &Failure($client,"refused\n",$userinput);
1733: }
1734: } else {
1735: &Failure($client,"refused\n",$userinput);
1736: }
1737: return 1;
1738: }
1.263 albertel 1739: ®ister_handler("edit", \&edit_table_handler, 1, 0, 1);
1.218 foxr 1740:
1.220 foxr 1741: #
1742: # Authenticate a user against the LonCAPA authentication
1743: # database. Note that there are several authentication
1744: # possibilities:
1745: # - unix - The user can be authenticated against the unix
1746: # password file.
1747: # - internal - The user can be authenticated against a purely
1748: # internal per user password file.
1749: # - kerberos - The user can be authenticated against either a kerb4 or kerb5
1750: # ticket granting authority.
1751: # - user - The person tailoring LonCAPA can supply a user authentication
1752: # mechanism that is per system.
1753: #
1754: # Parameters:
1755: # $cmd - The command that got us here.
1756: # $tail - Tail of the command (remaining parameters).
1757: # $client - File descriptor connected to client.
1758: # Returns
1759: # 0 - Requested to exit, caller should shut down.
1760: # 1 - Continue processing.
1761: # Implicit inputs:
1762: # The authentication systems describe above have their own forms of implicit
1763: # input into the authentication process that are described above.
1764: #
1765: sub authenticate_handler {
1766: my ($cmd, $tail, $client) = @_;
1767:
1768:
1769: # Regenerate the full input line
1770:
1771: my $userinput = $cmd.":".$tail;
1772:
1773: # udom - User's domain.
1774: # uname - Username.
1775: # upass - User's password.
1.396 raeburn 1776: # checkdefauth - Pass to validate_user() to try authentication
1777: # with default auth type(s) if no user account.
1.447 raeburn 1778: # clientcancheckhost - Passed by clients with functionality in lonauth.pm
1779: # to check if session can be hosted.
1.220 foxr 1780:
1.447 raeburn 1781: my ($udom, $uname, $upass, $checkdefauth, $clientcancheckhost)=split(/:/,$tail);
1.399 raeburn 1782: &Debug(" Authenticate domain = $udom, user = $uname, password = $upass, checkdefauth = $checkdefauth");
1.220 foxr 1783: chomp($upass);
1784: $upass=&unescape($upass);
1785:
1.396 raeburn 1786: my $pwdcorrect = &validate_user($udom,$uname,$upass,$checkdefauth);
1.220 foxr 1787: if($pwdcorrect) {
1.447 raeburn 1788: my $canhost = 1;
1789: unless ($clientcancheckhost) {
1.448 ! raeburn 1790: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
! 1791: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
! 1792: my @intdoms = &Apache::lonnet::get_internet_names($clientname);
! 1793: unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
1.447 raeburn 1794: my ($remote,$hosted);
1795: my $remotesession = &get_usersession_config($udom,'remotesession');
1796: if (ref($remotesession) eq 'HASH') {
1797: $remote = $remotesession->{'remote'}
1798: }
1.448 ! raeburn 1799: my $hostedsession = &get_usersession_config($clienthomedom,'hostedsession');
1.447 raeburn 1800: if (ref($hostedsession) eq 'HASH') {
1801: $hosted = $hostedsession->{'hosted'};
1802: }
1.448 ! raeburn 1803: $canhost = &Apache::lonnet::can_host_session($udom,$clientname,
! 1804: $clientversion,
1.447 raeburn 1805: $remote,$hosted);
1806: }
1807: }
1808: if ($canhost) {
1809: &Reply( $client, "authorized\n", $userinput);
1810: } else {
1811: &Reply( $client, "not_allowed_to_host\n", $userinput);
1812: }
1.220 foxr 1813: #
1814: # Bad credentials: Failed to authorize
1815: #
1816: } else {
1817: &Failure( $client, "non_authorized\n", $userinput);
1818: }
1819:
1820: return 1;
1821: }
1.263 albertel 1822: ®ister_handler("auth", \&authenticate_handler, 1, 1, 0);
1.214 foxr 1823:
1.222 foxr 1824: #
1825: # Change a user's password. Note that this function is complicated by
1826: # the fact that a user may be authenticated in more than one way:
1827: # At present, we are not able to change the password for all types of
1828: # authentication methods. Only for:
1829: # unix - unix password or shadow passoword style authentication.
1830: # local - Locally written authentication mechanism.
1831: # For now, kerb4 and kerb5 password changes are not supported and result
1832: # in an error.
1833: # FUTURE WORK:
1834: # Support kerberos passwd changes?
1835: # Parameters:
1836: # $cmd - The command that got us here.
1837: # $tail - Tail of the command (remaining parameters).
1838: # $client - File descriptor connected to client.
1839: # Returns
1840: # 0 - Requested to exit, caller should shut down.
1841: # 1 - Continue processing.
1842: # Implicit inputs:
1843: # The authentication systems describe above have their own forms of implicit
1844: # input into the authentication process that are described above.
1845: sub change_password_handler {
1846: my ($cmd, $tail, $client) = @_;
1847:
1848: my $userinput = $cmd.":".$tail; # Reconstruct client's string.
1849:
1850: #
1851: # udom - user's domain.
1852: # uname - Username.
1853: # upass - Current password.
1854: # npass - New password.
1.346 raeburn 1855: # context - Context in which this was called
1856: # (preferences or reset_by_email).
1.428 raeburn 1857: # lonhost - HostID of server where request originated
1.222 foxr 1858:
1.428 raeburn 1859: my ($udom,$uname,$upass,$npass,$context,$lonhost)=split(/:/,$tail);
1.222 foxr 1860:
1861: $upass=&unescape($upass);
1862: $npass=&unescape($npass);
1863: &Debug("Trying to change password for $uname");
1864:
1865: # First require that the user can be authenticated with their
1.346 raeburn 1866: # old password unless context was 'reset_by_email':
1867:
1.428 raeburn 1868: my ($validated,$failure);
1.346 raeburn 1869: if ($context eq 'reset_by_email') {
1.428 raeburn 1870: if ($lonhost eq '') {
1871: $failure = 'invalid_client';
1872: } else {
1873: $validated = 1;
1874: }
1.346 raeburn 1875: } else {
1876: $validated = &validate_user($udom, $uname, $upass);
1877: }
1.222 foxr 1878: if($validated) {
1879: my $realpasswd = &get_auth_type($udom, $uname); # Defined since authd.
1880:
1881: my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
1882: if ($howpwd eq 'internal') {
1883: &Debug("internal auth");
1884: my $salt=time;
1885: $salt=substr($salt,6,2);
1886: my $ncpass=crypt($npass,$salt);
1887: if(&rewrite_password_file($udom, $uname, "internal:$ncpass")) {
1.428 raeburn 1888: my $msg="Result of password change for $uname: pwchange_success";
1889: if ($lonhost) {
1890: $msg .= " - request originated from: $lonhost";
1891: }
1892: &logthis($msg);
1.222 foxr 1893: &Reply($client, "ok\n", $userinput);
1894: } else {
1895: &logthis("Unable to open $uname passwd "
1896: ."to change password");
1897: &Failure( $client, "non_authorized\n",$userinput);
1898: }
1.346 raeburn 1899: } elsif ($howpwd eq 'unix' && $context ne 'reset_by_email') {
1.287 foxr 1900: my $result = &change_unix_password($uname, $npass);
1.222 foxr 1901: &logthis("Result of password change for $uname: ".
1.287 foxr 1902: $result);
1.387 albertel 1903: &Reply($client, \$result, $userinput);
1.222 foxr 1904: } else {
1905: # this just means that the current password mode is not
1906: # one we know how to change (e.g the kerberos auth modes or
1907: # locally written auth handler).
1908: #
1909: &Failure( $client, "auth_mode_error\n", $userinput);
1910: }
1911:
1.224 foxr 1912: } else {
1.428 raeburn 1913: if ($failure eq '') {
1914: $failure = 'non_authorized';
1915: }
1916: &Failure( $client, "$failure\n", $userinput);
1.222 foxr 1917: }
1918:
1919: return 1;
1920: }
1.263 albertel 1921: ®ister_handler("passwd", \&change_password_handler, 1, 1, 0);
1.222 foxr 1922:
1.225 foxr 1923: #
1924: # Create a new user. User in this case means a lon-capa user.
1925: # The user must either already exist in some authentication realm
1926: # like kerberos or the /etc/passwd. If not, a user completely local to
1927: # this loncapa system is created.
1928: #
1929: # Parameters:
1930: # $cmd - The command that got us here.
1931: # $tail - Tail of the command (remaining parameters).
1932: # $client - File descriptor connected to client.
1933: # Returns
1934: # 0 - Requested to exit, caller should shut down.
1935: # 1 - Continue processing.
1936: # Implicit inputs:
1937: # The authentication systems describe above have their own forms of implicit
1938: # input into the authentication process that are described above.
1939: sub add_user_handler {
1940:
1941: my ($cmd, $tail, $client) = @_;
1942:
1943:
1944: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
1945: my $userinput = $cmd.":".$tail; # Reconstruct the full request line.
1946:
1947: &Debug("cmd =".$cmd." $udom =".$udom." uname=".$uname);
1948:
1949:
1950: if($udom eq $currentdomainid) { # Reject new users for other domains...
1951:
1952: my $oldumask=umask(0077);
1953: chomp($npass);
1954: $npass=&unescape($npass);
1955: my $passfilename = &password_path($udom, $uname);
1956: &Debug("Password file created will be:".$passfilename);
1957: if (-e $passfilename) {
1958: &Failure( $client, "already_exists\n", $userinput);
1959: } else {
1960: my $fperror='';
1.264 albertel 1961: if (!&mkpath($passfilename)) {
1962: $fperror="error: ".($!+0)." mkdir failed while attempting "
1963: ."makeuser";
1.225 foxr 1964: }
1965: unless ($fperror) {
1966: my $result=&make_passwd_file($uname, $umode,$npass, $passfilename);
1.390 raeburn 1967: &Reply($client,\$result, $userinput); #BUGBUG - could be fail
1.225 foxr 1968: } else {
1.387 albertel 1969: &Failure($client, \$fperror, $userinput);
1.225 foxr 1970: }
1971: }
1972: umask($oldumask);
1973: } else {
1974: &Failure($client, "not_right_domain\n",
1975: $userinput); # Even if we are multihomed.
1976:
1977: }
1978: return 1;
1979:
1980: }
1981: ®ister_handler("makeuser", \&add_user_handler, 1, 1, 0);
1982:
1983: #
1984: # Change the authentication method of a user. Note that this may
1985: # also implicitly change the user's password if, for example, the user is
1986: # joining an existing authentication realm. Known authentication realms at
1987: # this time are:
1988: # internal - Purely internal password file (only loncapa knows this user)
1989: # local - Institutionally written authentication module.
1990: # unix - Unix user (/etc/passwd with or without /etc/shadow).
1991: # kerb4 - kerberos version 4
1992: # kerb5 - kerberos version 5
1993: #
1994: # Parameters:
1995: # $cmd - The command that got us here.
1996: # $tail - Tail of the command (remaining parameters).
1997: # $client - File descriptor connected to client.
1998: # Returns
1999: # 0 - Requested to exit, caller should shut down.
2000: # 1 - Continue processing.
2001: # Implicit inputs:
2002: # The authentication systems describe above have their own forms of implicit
2003: # input into the authentication process that are described above.
1.287 foxr 2004: # NOTE:
2005: # This is also used to change the authentication credential values (e.g. passwd).
2006: #
1.225 foxr 2007: #
2008: sub change_authentication_handler {
2009:
2010: my ($cmd, $tail, $client) = @_;
2011:
2012: my $userinput = "$cmd:$tail"; # Reconstruct user input.
2013:
2014: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2015: &Debug("cmd = ".$cmd." domain= ".$udom."uname =".$uname." umode= ".$umode);
2016: if ($udom ne $currentdomainid) {
2017: &Failure( $client, "not_right_domain\n", $client);
2018: } else {
2019:
2020: chomp($npass);
2021:
2022: $npass=&unescape($npass);
1.261 foxr 2023: my $oldauth = &get_auth_type($udom, $uname); # Get old auth info.
1.225 foxr 2024: my $passfilename = &password_path($udom, $uname);
2025: if ($passfilename) { # Not allowed to create a new user!!
1.287 foxr 2026: # If just changing the unix passwd. need to arrange to run
2027: # passwd since otherwise make_passwd_file will run
2028: # lcuseradd which fails if an account already exists
2029: # (to prevent an unscrupulous LONCAPA admin from stealing
2030: # an existing account by overwriting it as a LonCAPA account).
2031:
2032: if(($oldauth =~/^unix/) && ($umode eq "unix")) {
2033: my $result = &change_unix_password($uname, $npass);
2034: &logthis("Result of password change for $uname: ".$result);
2035: if ($result eq "ok") {
1.390 raeburn 2036: &Reply($client, \$result);
1.288 albertel 2037: } else {
1.387 albertel 2038: &Failure($client, \$result);
1.287 foxr 2039: }
1.288 albertel 2040: } else {
1.287 foxr 2041: my $result=&make_passwd_file($uname, $umode,$npass,$passfilename);
2042: #
2043: # If the current auth mode is internal, and the old auth mode was
2044: # unix, or krb*, and the user is an author for this domain,
2045: # re-run manage_permissions for that role in order to be able
2046: # to take ownership of the construction space back to www:www
2047: #
2048:
2049:
2050: if( (($oldauth =~ /^unix/) && ($umode eq "internal")) ||
2051: (($oldauth =~ /^internal/) && ($umode eq "unix")) ) {
2052: if(&is_author($udom, $uname)) {
2053: &Debug(" Need to manage author permissions...");
2054: &manage_permissions("/$udom/_au", $udom, $uname, "$umode:");
2055: }
1.261 foxr 2056: }
1.387 albertel 2057: &Reply($client, \$result, $userinput);
1.261 foxr 2058: }
2059:
2060:
1.225 foxr 2061: } else {
1.251 foxr 2062: &Failure($client, "non_authorized\n", $userinput); # Fail the user now.
1.225 foxr 2063: }
2064: }
2065: return 1;
2066: }
2067: ®ister_handler("changeuserauth", \&change_authentication_handler, 1,1, 0);
2068:
2069: #
2070: # Determines if this is the home server for a user. The home server
2071: # for a user will have his/her lon-capa passwd file. Therefore all we need
2072: # to do is determine if this file exists.
2073: #
2074: # Parameters:
2075: # $cmd - The command that got us here.
2076: # $tail - Tail of the command (remaining parameters).
2077: # $client - File descriptor connected to client.
2078: # Returns
2079: # 0 - Requested to exit, caller should shut down.
2080: # 1 - Continue processing.
2081: # Implicit inputs:
2082: # The authentication systems describe above have their own forms of implicit
2083: # input into the authentication process that are described above.
2084: #
2085: sub is_home_handler {
2086: my ($cmd, $tail, $client) = @_;
2087:
2088: my $userinput = "$cmd:$tail";
2089:
2090: my ($udom,$uname)=split(/:/,$tail);
2091: chomp($uname);
2092: my $passfile = &password_filename($udom, $uname);
2093: if($passfile) {
2094: &Reply( $client, "found\n", $userinput);
2095: } else {
2096: &Failure($client, "not_found\n", $userinput);
2097: }
2098: return 1;
2099: }
2100: ®ister_handler("home", \&is_home_handler, 0,1,0);
2101:
2102: #
1.434 www 2103: # Process an update request for a resource.
2104: # A resource has been modified that we hold a subscription to.
1.225 foxr 2105: # If the resource is not local, then we must update, or at least invalidate our
2106: # cached copy of the resource.
2107: # Parameters:
2108: # $cmd - The command that got us here.
2109: # $tail - Tail of the command (remaining parameters).
2110: # $client - File descriptor connected to client.
2111: # Returns
2112: # 0 - Requested to exit, caller should shut down.
2113: # 1 - Continue processing.
2114: # Implicit inputs:
2115: # The authentication systems describe above have their own forms of implicit
2116: # input into the authentication process that are described above.
2117: #
2118: sub update_resource_handler {
2119:
2120: my ($cmd, $tail, $client) = @_;
2121:
2122: my $userinput = "$cmd:$tail";
2123:
2124: my $fname= $tail; # This allows interactive testing
2125:
2126:
2127: my $ownership=ishome($fname);
2128: if ($ownership eq 'not_owner') {
2129: if (-e $fname) {
1.434 www 2130: # Delete preview file, if exists
2131: unlink("$fname.tmp");
2132: # Get usage stats
1.225 foxr 2133: my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
2134: $atime,$mtime,$ctime,$blksize,$blocks)=stat($fname);
2135: my $now=time;
2136: my $since=$now-$atime;
1.434 www 2137: # If the file has not been used within lonExpire seconds,
2138: # unsubscribe from it and delete local copy
1.225 foxr 2139: if ($since>$perlvar{'lonExpire'}) {
1.365 albertel 2140: my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
1.308 albertel 2141: &devalidate_meta_cache($fname);
1.225 foxr 2142: unlink("$fname");
1.334 albertel 2143: unlink("$fname.meta");
1.225 foxr 2144: } else {
1.434 www 2145: # Yes, this is in active use. Get a fresh copy. Since it might be in
2146: # very active use and huge (like a movie), copy it to "in.transfer" filename first.
1.225 foxr 2147: my $transname="$fname.in.transfer";
1.365 albertel 2148: my $remoteurl=&Apache::lonnet::reply("sub:$fname","$clientname");
1.225 foxr 2149: my $response;
2150: alarm(120);
2151: {
2152: my $ua=new LWP::UserAgent;
2153: my $request=new HTTP::Request('GET',"$remoteurl");
2154: $response=$ua->request($request,$transname);
2155: }
2156: alarm(0);
2157: if ($response->is_error()) {
2158: unlink($transname);
2159: my $message=$response->status_line;
2160: &logthis("LWP GET: $message for $fname ($remoteurl)");
2161: } else {
2162: if ($remoteurl!~/\.meta$/) {
2163: alarm(120);
2164: {
2165: my $ua=new LWP::UserAgent;
2166: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2167: my $mresponse=$ua->request($mrequest,$fname.'.meta');
2168: if ($mresponse->is_error()) {
2169: unlink($fname.'.meta');
2170: }
2171: }
2172: alarm(0);
2173: }
1.434 www 2174: # we successfully transfered, copy file over to real name
1.225 foxr 2175: rename($transname,$fname);
1.308 albertel 2176: &devalidate_meta_cache($fname);
1.225 foxr 2177: }
2178: }
2179: &Reply( $client, "ok\n", $userinput);
2180: } else {
2181: &Failure($client, "not_found\n", $userinput);
2182: }
2183: } else {
2184: &Failure($client, "rejected\n", $userinput);
2185: }
2186: return 1;
2187: }
2188: ®ister_handler("update", \&update_resource_handler, 0 ,1, 0);
2189:
1.308 albertel 2190: sub devalidate_meta_cache {
2191: my ($url) = @_;
2192: use Cache::Memcached;
2193: my $memcache = new Cache::Memcached({'servers'=>['127.0.0.1:11211']});
1.365 albertel 2194: $url = &Apache::lonnet::declutter($url);
1.308 albertel 2195: $url =~ s-\.meta$--;
2196: my $id = &escape('meta:'.$url);
2197: $memcache->delete($id);
2198: }
2199:
1.225 foxr 2200: #
1.226 foxr 2201: # Fetch a user file from a remote server to the user's home directory
2202: # userfiles subdir.
1.225 foxr 2203: # Parameters:
2204: # $cmd - The command that got us here.
2205: # $tail - Tail of the command (remaining parameters).
2206: # $client - File descriptor connected to client.
2207: # Returns
2208: # 0 - Requested to exit, caller should shut down.
2209: # 1 - Continue processing.
2210: #
2211: sub fetch_user_file_handler {
2212:
2213: my ($cmd, $tail, $client) = @_;
2214:
2215: my $userinput = "$cmd:$tail";
2216: my $fname = $tail;
1.232 foxr 2217: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
1.225 foxr 2218: my $udir=&propath($udom,$uname).'/userfiles';
2219: unless (-e $udir) {
2220: mkdir($udir,0770);
2221: }
1.232 foxr 2222: Debug("fetch user file for $fname");
1.225 foxr 2223: if (-e $udir) {
2224: $ufile=~s/^[\.\~]+//;
1.232 foxr 2225:
2226: # IF necessary, create the path right down to the file.
2227: # Note that any regular files in the way of this path are
2228: # wiped out to deal with some earlier folly of mine.
2229:
1.267 raeburn 2230: if (!&mkpath($udir.'/'.$ufile)) {
1.264 albertel 2231: &Failure($client, "unable_to_create\n", $userinput);
1.232 foxr 2232: }
2233:
1.225 foxr 2234: my $destname=$udir.'/'.$ufile;
2235: my $transname=$udir.'/'.$ufile.'.in.transit';
2236: my $remoteurl='http://'.$clientip.'/userfiles/'.$fname;
2237: my $response;
1.232 foxr 2238: Debug("Remote URL : $remoteurl Transfername $transname Destname: $destname");
1.225 foxr 2239: alarm(120);
2240: {
2241: my $ua=new LWP::UserAgent;
2242: my $request=new HTTP::Request('GET',"$remoteurl");
2243: $response=$ua->request($request,$transname);
2244: }
2245: alarm(0);
2246: if ($response->is_error()) {
2247: unlink($transname);
2248: my $message=$response->status_line;
2249: &logthis("LWP GET: $message for $fname ($remoteurl)");
2250: &Failure($client, "failed\n", $userinput);
2251: } else {
1.232 foxr 2252: Debug("Renaming $transname to $destname");
1.225 foxr 2253: if (!rename($transname,$destname)) {
2254: &logthis("Unable to move $transname to $destname");
2255: unlink($transname);
2256: &Failure($client, "failed\n", $userinput);
2257: } else {
2258: &Reply($client, "ok\n", $userinput);
2259: }
2260: }
2261: } else {
2262: &Failure($client, "not_home\n", $userinput);
2263: }
2264: return 1;
2265: }
2266: ®ister_handler("fetchuserfile", \&fetch_user_file_handler, 0, 1, 0);
2267:
1.226 foxr 2268: #
2269: # Remove a file from a user's home directory userfiles subdirectory.
2270: # Parameters:
2271: # cmd - the Lond request keyword that got us here.
2272: # tail - the part of the command past the keyword.
2273: # client- File descriptor connected with the client.
2274: #
2275: # Returns:
2276: # 1 - Continue processing.
2277: sub remove_user_file_handler {
2278: my ($cmd, $tail, $client) = @_;
2279:
2280: my ($fname) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2281:
2282: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
2283: if ($ufile =~m|/\.\./|) {
2284: # any files paths with /../ in them refuse
2285: # to deal with
2286: &Failure($client, "refused\n", "$cmd:$tail");
2287: } else {
2288: my $udir = &propath($udom,$uname);
2289: if (-e $udir) {
2290: my $file=$udir.'/userfiles/'.$ufile;
2291: if (-e $file) {
1.253 foxr 2292: #
2293: # If the file is a regular file unlink is fine...
2294: # However it's possible the client wants a dir.
2295: # removed, in which case rmdir is more approprate:
2296: #
1.240 banghart 2297: if (-f $file){
1.241 albertel 2298: unlink($file);
2299: } elsif(-d $file) {
2300: rmdir($file);
1.240 banghart 2301: }
1.226 foxr 2302: if (-e $file) {
1.253 foxr 2303: # File is still there after we deleted it ?!?
2304:
1.226 foxr 2305: &Failure($client, "failed\n", "$cmd:$tail");
2306: } else {
2307: &Reply($client, "ok\n", "$cmd:$tail");
2308: }
2309: } else {
2310: &Failure($client, "not_found\n", "$cmd:$tail");
2311: }
2312: } else {
2313: &Failure($client, "not_home\n", "$cmd:$tail");
2314: }
2315: }
2316: return 1;
2317: }
2318: ®ister_handler("removeuserfile", \&remove_user_file_handler, 0,1,0);
2319:
1.236 albertel 2320: #
2321: # make a directory in a user's home directory userfiles subdirectory.
2322: # Parameters:
2323: # cmd - the Lond request keyword that got us here.
2324: # tail - the part of the command past the keyword.
2325: # client- File descriptor connected with the client.
2326: #
2327: # Returns:
2328: # 1 - Continue processing.
2329: sub mkdir_user_file_handler {
2330: my ($cmd, $tail, $client) = @_;
2331:
2332: my ($dir) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2333: $dir=&unescape($dir);
2334: my ($udom,$uname,$ufile) = ($dir =~ m|^([^/]+)/([^/]+)/(.+)$|);
2335: if ($ufile =~m|/\.\./|) {
2336: # any files paths with /../ in them refuse
2337: # to deal with
2338: &Failure($client, "refused\n", "$cmd:$tail");
2339: } else {
2340: my $udir = &propath($udom,$uname);
2341: if (-e $udir) {
1.264 albertel 2342: my $newdir=$udir.'/userfiles/'.$ufile.'/';
2343: if (!&mkpath($newdir)) {
2344: &Failure($client, "failed\n", "$cmd:$tail");
1.236 albertel 2345: }
1.264 albertel 2346: &Reply($client, "ok\n", "$cmd:$tail");
1.236 albertel 2347: } else {
2348: &Failure($client, "not_home\n", "$cmd:$tail");
2349: }
2350: }
2351: return 1;
2352: }
2353: ®ister_handler("mkdiruserfile", \&mkdir_user_file_handler, 0,1,0);
2354:
1.237 albertel 2355: #
2356: # rename a file in a user's home directory userfiles subdirectory.
2357: # Parameters:
2358: # cmd - the Lond request keyword that got us here.
2359: # tail - the part of the command past the keyword.
2360: # client- File descriptor connected with the client.
2361: #
2362: # Returns:
2363: # 1 - Continue processing.
2364: sub rename_user_file_handler {
2365: my ($cmd, $tail, $client) = @_;
2366:
2367: my ($udom,$uname,$old,$new) = split(/:/, $tail);
2368: $old=&unescape($old);
2369: $new=&unescape($new);
2370: if ($new =~m|/\.\./| || $old =~m|/\.\./|) {
2371: # any files paths with /../ in them refuse to deal with
2372: &Failure($client, "refused\n", "$cmd:$tail");
2373: } else {
2374: my $udir = &propath($udom,$uname);
2375: if (-e $udir) {
2376: my $oldfile=$udir.'/userfiles/'.$old;
2377: my $newfile=$udir.'/userfiles/'.$new;
2378: if (-e $newfile) {
2379: &Failure($client, "exists\n", "$cmd:$tail");
2380: } elsif (! -e $oldfile) {
2381: &Failure($client, "not_found\n", "$cmd:$tail");
2382: } else {
2383: if (!rename($oldfile,$newfile)) {
2384: &Failure($client, "failed\n", "$cmd:$tail");
2385: } else {
2386: &Reply($client, "ok\n", "$cmd:$tail");
2387: }
2388: }
2389: } else {
2390: &Failure($client, "not_home\n", "$cmd:$tail");
2391: }
2392: }
2393: return 1;
2394: }
2395: ®ister_handler("renameuserfile", \&rename_user_file_handler, 0,1,0);
2396:
1.227 foxr 2397: #
1.382 albertel 2398: # Checks if the specified user has an active session on the server
2399: # return ok if so, not_found if not
2400: #
2401: # Parameters:
2402: # cmd - The request keyword that dispatched to tus.
2403: # tail - The tail of the request (colon separated parameters).
2404: # client - Filehandle open on the client.
2405: # Return:
2406: # 1.
2407: sub user_has_session_handler {
2408: my ($cmd, $tail, $client) = @_;
2409:
2410: my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail));
2411:
2412: &logthis("Looking for $udom $uname");
2413: opendir(DIR,$perlvar{'lonIDsDir'});
2414: my $filename;
2415: while ($filename=readdir(DIR)) {
2416: last if ($filename=~/^\Q$uname\E_\d+_\Q$udom\E_/);
2417: }
2418: if ($filename) {
2419: &Reply($client, "ok\n", "$cmd:$tail");
2420: } else {
2421: &Failure($client, "not_found\n", "$cmd:$tail");
2422: }
2423: return 1;
2424:
2425: }
2426: ®ister_handler("userhassession", \&user_has_session_handler, 0,1,0);
2427:
2428: #
1.263 albertel 2429: # Authenticate access to a user file by checking that the token the user's
2430: # passed also exists in their session file
1.227 foxr 2431: #
2432: # Parameters:
2433: # cmd - The request keyword that dispatched to tus.
2434: # tail - The tail of the request (colon separated parameters).
2435: # client - Filehandle open on the client.
2436: # Return:
2437: # 1.
2438: sub token_auth_user_file_handler {
2439: my ($cmd, $tail, $client) = @_;
2440:
2441: my ($fname, $session) = split(/:/, $tail);
2442:
2443: chomp($session);
1.393 raeburn 2444: my $reply="non_auth";
1.343 albertel 2445: my $file = $perlvar{'lonIDsDir'}.'/'.$session.'.id';
2446: if (open(ENVIN,"$file")) {
1.332 albertel 2447: flock(ENVIN,LOCK_SH);
1.343 albertel 2448: tie(my %disk_env,'GDBM_File',"$file",&GDBM_READER(),0640);
2449: if (exists($disk_env{"userfile.$fname"})) {
1.393 raeburn 2450: $reply="ok";
1.343 albertel 2451: } else {
2452: foreach my $envname (keys(%disk_env)) {
2453: if ($envname=~ m|^userfile\.\Q$fname\E|) {
1.393 raeburn 2454: $reply="ok";
1.343 albertel 2455: last;
2456: }
2457: }
1.227 foxr 2458: }
1.343 albertel 2459: untie(%disk_env);
1.227 foxr 2460: close(ENVIN);
1.387 albertel 2461: &Reply($client, \$reply, "$cmd:$tail");
1.227 foxr 2462: } else {
2463: &Failure($client, "invalid_token\n", "$cmd:$tail");
2464: }
2465: return 1;
2466:
2467: }
2468: ®ister_handler("tokenauthuserfile", \&token_auth_user_file_handler, 0,1,0);
1.229 foxr 2469:
2470: #
2471: # Unsubscribe from a resource.
2472: #
2473: # Parameters:
2474: # $cmd - The command that got us here.
2475: # $tail - Tail of the command (remaining parameters).
2476: # $client - File descriptor connected to client.
2477: # Returns
2478: # 0 - Requested to exit, caller should shut down.
2479: # 1 - Continue processing.
2480: #
2481: sub unsubscribe_handler {
2482: my ($cmd, $tail, $client) = @_;
2483:
2484: my $userinput= "$cmd:$tail";
2485:
2486: my ($fname) = split(/:/,$tail); # Split in case there's extrs.
2487:
2488: &Debug("Unsubscribing $fname");
2489: if (-e $fname) {
2490: &Debug("Exists");
2491: &Reply($client, &unsub($fname,$clientip), $userinput);
2492: } else {
2493: &Failure($client, "not_found\n", $userinput);
2494: }
2495: return 1;
2496: }
2497: ®ister_handler("unsub", \&unsubscribe_handler, 0, 1, 0);
1.263 albertel 2498:
1.230 foxr 2499: # Subscribe to a resource
2500: #
2501: # Parameters:
2502: # $cmd - The command that got us here.
2503: # $tail - Tail of the command (remaining parameters).
2504: # $client - File descriptor connected to client.
2505: # Returns
2506: # 0 - Requested to exit, caller should shut down.
2507: # 1 - Continue processing.
2508: #
2509: sub subscribe_handler {
2510: my ($cmd, $tail, $client)= @_;
2511:
2512: my $userinput = "$cmd:$tail";
2513:
2514: &Reply( $client, &subscribe($userinput,$clientip), $userinput);
2515:
2516: return 1;
2517: }
2518: ®ister_handler("sub", \&subscribe_handler, 0, 1, 0);
2519:
2520: #
1.379 albertel 2521: # Determine the latest version of a resource (it looks for the highest
2522: # past version and then returns that +1)
1.230 foxr 2523: #
2524: # Parameters:
2525: # $cmd - The command that got us here.
2526: # $tail - Tail of the command (remaining parameters).
1.379 albertel 2527: # (Should consist of an absolute path to a file)
1.230 foxr 2528: # $client - File descriptor connected to client.
2529: # Returns
2530: # 0 - Requested to exit, caller should shut down.
2531: # 1 - Continue processing.
2532: #
2533: sub current_version_handler {
2534: my ($cmd, $tail, $client) = @_;
2535:
2536: my $userinput= "$cmd:$tail";
2537:
2538: my $fname = $tail;
2539: &Reply( $client, ¤tversion($fname)."\n", $userinput);
2540: return 1;
2541:
2542: }
2543: ®ister_handler("currentversion", \¤t_version_handler, 0, 1, 0);
2544:
2545: # Make an entry in a user's activity log.
2546: #
2547: # Parameters:
2548: # $cmd - The command that got us here.
2549: # $tail - Tail of the command (remaining parameters).
2550: # $client - File descriptor connected to client.
2551: # Returns
2552: # 0 - Requested to exit, caller should shut down.
2553: # 1 - Continue processing.
2554: #
2555: sub activity_log_handler {
2556: my ($cmd, $tail, $client) = @_;
2557:
2558:
2559: my $userinput= "$cmd:$tail";
2560:
2561: my ($udom,$uname,$what)=split(/:/,$tail);
2562: chomp($what);
2563: my $proname=&propath($udom,$uname);
2564: my $now=time;
2565: my $hfh;
2566: if ($hfh=IO::File->new(">>$proname/activity.log")) {
2567: print $hfh "$now:$clientname:$what\n";
2568: &Reply( $client, "ok\n", $userinput);
2569: } else {
2570: &Failure($client, "error: ".($!+0)." IO::File->new Failed "
2571: ."while attempting log\n",
2572: $userinput);
2573: }
2574:
2575: return 1;
2576: }
1.263 albertel 2577: ®ister_handler("log", \&activity_log_handler, 0, 1, 0);
1.230 foxr 2578:
2579: #
2580: # Put a namespace entry in a user profile hash.
2581: # My druthers would be for this to be an encrypted interaction too.
2582: # anything that might be an inadvertent covert channel about either
2583: # user authentication or user personal information....
2584: #
2585: # Parameters:
2586: # $cmd - The command that got us here.
2587: # $tail - Tail of the command (remaining parameters).
2588: # $client - File descriptor connected to client.
2589: # Returns
2590: # 0 - Requested to exit, caller should shut down.
2591: # 1 - Continue processing.
2592: #
2593: sub put_user_profile_entry {
2594: my ($cmd, $tail, $client) = @_;
1.229 foxr 2595:
1.230 foxr 2596: my $userinput = "$cmd:$tail";
2597:
1.242 raeburn 2598: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
1.230 foxr 2599: if ($namespace ne 'roles') {
2600: chomp($what);
2601: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2602: &GDBM_WRCREAT(),"P",$what);
2603: if($hashref) {
2604: my @pairs=split(/\&/,$what);
2605: foreach my $pair (@pairs) {
2606: my ($key,$value)=split(/=/,$pair);
2607: $hashref->{$key}=$value;
2608: }
1.311 albertel 2609: if (&untie_user_hash($hashref)) {
1.230 foxr 2610: &Reply( $client, "ok\n", $userinput);
2611: } else {
2612: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
2613: "while attempting put\n",
2614: $userinput);
2615: }
2616: } else {
1.316 albertel 2617: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.230 foxr 2618: "while attempting put\n", $userinput);
2619: }
2620: } else {
2621: &Failure( $client, "refused\n", $userinput);
2622: }
2623:
2624: return 1;
2625: }
2626: ®ister_handler("put", \&put_user_profile_entry, 0, 1, 0);
2627:
1.283 albertel 2628: # Put a piece of new data in hash, returns error if entry already exists
2629: # Parameters:
2630: # $cmd - The command that got us here.
2631: # $tail - Tail of the command (remaining parameters).
2632: # $client - File descriptor connected to client.
2633: # Returns
2634: # 0 - Requested to exit, caller should shut down.
2635: # 1 - Continue processing.
2636: #
2637: sub newput_user_profile_entry {
2638: my ($cmd, $tail, $client) = @_;
2639:
2640: my $userinput = "$cmd:$tail";
2641:
2642: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
2643: if ($namespace eq 'roles') {
2644: &Failure( $client, "refused\n", $userinput);
2645: return 1;
2646: }
2647:
2648: chomp($what);
2649:
2650: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2651: &GDBM_WRCREAT(),"N",$what);
2652: if(!$hashref) {
1.316 albertel 2653: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.283 albertel 2654: "while attempting put\n", $userinput);
2655: return 1;
2656: }
2657:
2658: my @pairs=split(/\&/,$what);
2659: foreach my $pair (@pairs) {
2660: my ($key,$value)=split(/=/,$pair);
2661: if (exists($hashref->{$key})) {
2662: &Failure($client, "key_exists: ".$key."\n",$userinput);
2663: return 1;
2664: }
2665: }
2666:
2667: foreach my $pair (@pairs) {
2668: my ($key,$value)=split(/=/,$pair);
2669: $hashref->{$key}=$value;
2670: }
2671:
1.311 albertel 2672: if (&untie_user_hash($hashref)) {
1.283 albertel 2673: &Reply( $client, "ok\n", $userinput);
2674: } else {
2675: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
2676: "while attempting put\n",
2677: $userinput);
2678: }
2679: return 1;
2680: }
2681: ®ister_handler("newput", \&newput_user_profile_entry, 0, 1, 0);
2682:
1.230 foxr 2683: #
2684: # Increment a profile entry in the user history file.
2685: # The history contains keyword value pairs. In this case,
2686: # The value itself is a pair of numbers. The first, the current value
2687: # the second an increment that this function applies to the current
2688: # value.
2689: #
2690: # Parameters:
2691: # $cmd - The command that got us here.
2692: # $tail - Tail of the command (remaining parameters).
2693: # $client - File descriptor connected to client.
2694: # Returns
2695: # 0 - Requested to exit, caller should shut down.
2696: # 1 - Continue processing.
2697: #
2698: sub increment_user_value_handler {
2699: my ($cmd, $tail, $client) = @_;
2700:
2701: my $userinput = "$cmd:$tail";
2702:
2703: my ($udom,$uname,$namespace,$what) =split(/:/,$tail);
2704: if ($namespace ne 'roles') {
2705: chomp($what);
2706: my $hashref = &tie_user_hash($udom, $uname,
2707: $namespace, &GDBM_WRCREAT(),
2708: "P",$what);
2709: if ($hashref) {
2710: my @pairs=split(/\&/,$what);
2711: foreach my $pair (@pairs) {
2712: my ($key,$value)=split(/=/,$pair);
1.284 raeburn 2713: $value = &unescape($value);
1.230 foxr 2714: # We could check that we have a number...
2715: if (! defined($value) || $value eq '') {
2716: $value = 1;
2717: }
2718: $hashref->{$key}+=$value;
1.284 raeburn 2719: if ($namespace eq 'nohist_resourcetracker') {
2720: if ($hashref->{$key} < 0) {
2721: $hashref->{$key} = 0;
2722: }
2723: }
1.230 foxr 2724: }
1.311 albertel 2725: if (&untie_user_hash($hashref)) {
1.230 foxr 2726: &Reply( $client, "ok\n", $userinput);
2727: } else {
2728: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
2729: "while attempting inc\n", $userinput);
2730: }
2731: } else {
2732: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
2733: "while attempting inc\n", $userinput);
2734: }
2735: } else {
2736: &Failure($client, "refused\n", $userinput);
2737: }
2738:
2739: return 1;
2740: }
2741: ®ister_handler("inc", \&increment_user_value_handler, 0, 1, 0);
2742:
2743: #
2744: # Put a new role for a user. Roles are LonCAPA's packaging of permissions.
2745: # Each 'role' a user has implies a set of permissions. Adding a new role
2746: # for a person grants the permissions packaged with that role
2747: # to that user when the role is selected.
2748: #
2749: # Parameters:
2750: # $cmd - The command string (rolesput).
2751: # $tail - The remainder of the request line. For rolesput this
2752: # consists of a colon separated list that contains:
2753: # The domain and user that is granting the role (logged).
2754: # The domain and user that is getting the role.
2755: # The roles being granted as a set of & separated pairs.
2756: # each pair a key value pair.
2757: # $client - File descriptor connected to the client.
2758: # Returns:
2759: # 0 - If the daemon should exit
2760: # 1 - To continue processing.
2761: #
2762: #
2763: sub roles_put_handler {
2764: my ($cmd, $tail, $client) = @_;
2765:
2766: my $userinput = "$cmd:$tail";
2767:
2768: my ( $exedom, $exeuser, $udom, $uname, $what) = split(/:/,$tail);
2769:
2770:
2771: my $namespace='roles';
2772: chomp($what);
2773: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2774: &GDBM_WRCREAT(), "P",
2775: "$exedom:$exeuser:$what");
2776: #
2777: # Log the attempt to set a role. The {}'s here ensure that the file
2778: # handle is open for the minimal amount of time. Since the flush
2779: # is done on close this improves the chances the log will be an un-
2780: # corrupted ordered thing.
2781: if ($hashref) {
1.261 foxr 2782: my $pass_entry = &get_auth_type($udom, $uname);
2783: my ($auth_type,$pwd) = split(/:/, $pass_entry);
2784: $auth_type = $auth_type.":";
1.230 foxr 2785: my @pairs=split(/\&/,$what);
2786: foreach my $pair (@pairs) {
2787: my ($key,$value)=split(/=/,$pair);
2788: &manage_permissions($key, $udom, $uname,
1.260 foxr 2789: $auth_type);
1.230 foxr 2790: $hashref->{$key}=$value;
2791: }
1.311 albertel 2792: if (&untie_user_hash($hashref)) {
1.230 foxr 2793: &Reply($client, "ok\n", $userinput);
2794: } else {
2795: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
2796: "while attempting rolesput\n", $userinput);
2797: }
2798: } else {
2799: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
2800: "while attempting rolesput\n", $userinput);
2801: }
2802: return 1;
2803: }
2804: ®ister_handler("rolesput", \&roles_put_handler, 1,1,0); # Encoded client only.
2805:
2806: #
1.231 foxr 2807: # Deletes (removes) a role for a user. This is equivalent to removing
2808: # a permissions package associated with the role from the user's profile.
2809: #
2810: # Parameters:
2811: # $cmd - The command (rolesdel)
2812: # $tail - The remainder of the request line. This consists
2813: # of:
2814: # The domain and user requesting the change (logged)
2815: # The domain and user being changed.
2816: # The roles being revoked. These are shipped to us
2817: # as a bunch of & separated role name keywords.
2818: # $client - The file handle open on the client.
2819: # Returns:
2820: # 1 - Continue processing
2821: # 0 - Exit.
2822: #
2823: sub roles_delete_handler {
2824: my ($cmd, $tail, $client) = @_;
2825:
2826: my $userinput = "$cmd:$tail";
2827:
2828: my ($exedom,$exeuser,$udom,$uname,$what)=split(/:/,$tail);
2829: &Debug("cmd = ".$cmd." exedom= ".$exedom."user = ".$exeuser." udom=".$udom.
2830: "what = ".$what);
2831: my $namespace='roles';
2832: chomp($what);
2833: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2834: &GDBM_WRCREAT(), "D",
2835: "$exedom:$exeuser:$what");
2836:
2837: if ($hashref) {
2838: my @rolekeys=split(/\&/,$what);
2839:
2840: foreach my $key (@rolekeys) {
2841: delete $hashref->{$key};
2842: }
1.315 albertel 2843: if (&untie_user_hash($hashref)) {
1.231 foxr 2844: &Reply($client, "ok\n", $userinput);
2845: } else {
2846: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
2847: "while attempting rolesdel\n", $userinput);
2848: }
2849: } else {
2850: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
2851: "while attempting rolesdel\n", $userinput);
2852: }
2853:
2854: return 1;
2855: }
2856: ®ister_handler("rolesdel", \&roles_delete_handler, 1,1, 0); # Encoded client only
2857:
2858: # Unencrypted get from a user's profile database. See
2859: # GetProfileEntryEncrypted for a version that does end-to-end encryption.
2860: # This function retrieves a keyed item from a specific named database in the
2861: # user's directory.
2862: #
2863: # Parameters:
2864: # $cmd - Command request keyword (get).
2865: # $tail - Tail of the command. This is a colon separated list
2866: # consisting of the domain and username that uniquely
2867: # identifies the profile,
2868: # The 'namespace' which selects the gdbm file to
2869: # do the lookup in,
2870: # & separated list of keys to lookup. Note that
2871: # the values are returned as an & separated list too.
2872: # $client - File descriptor open on the client.
2873: # Returns:
2874: # 1 - Continue processing.
2875: # 0 - Exit.
2876: #
2877: sub get_profile_entry {
2878: my ($cmd, $tail, $client) = @_;
2879:
2880: my $userinput= "$cmd:$tail";
2881:
2882: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
2883: chomp($what);
1.255 foxr 2884:
1.390 raeburn 2885:
1.255 foxr 2886: my $replystring = read_profile($udom, $uname, $namespace, $what);
2887: my ($first) = split(/:/,$replystring);
2888: if($first ne "error") {
1.387 albertel 2889: &Reply($client, \$replystring, $userinput);
1.231 foxr 2890: } else {
1.255 foxr 2891: &Failure($client, $replystring." while attempting get\n", $userinput);
1.231 foxr 2892: }
2893: return 1;
1.255 foxr 2894:
2895:
1.231 foxr 2896: }
2897: ®ister_handler("get", \&get_profile_entry, 0,1,0);
2898:
2899: #
2900: # Process the encrypted get request. Note that the request is sent
2901: # in clear, but the reply is encrypted. This is a small covert channel:
2902: # information about the sensitive keys is given to the snooper. Just not
2903: # information about the values of the sensitive key. Hmm if I wanted to
2904: # know these I'd snoop for the egets. Get the profile item names from them
2905: # and then issue a get for them since there's no enforcement of the
2906: # requirement of an encrypted get for particular profile items. If I
2907: # were re-doing this, I'd force the request to be encrypted as well as the
2908: # reply. I'd also just enforce encrypted transactions for all gets since
2909: # that would prevent any covert channel snooping.
2910: #
2911: # Parameters:
2912: # $cmd - Command keyword of request (eget).
2913: # $tail - Tail of the command. See GetProfileEntry
# for more information about this.
2914: # $client - File open on the client.
2915: # Returns:
2916: # 1 - Continue processing
2917: # 0 - server should exit.
2918: sub get_profile_entry_encrypted {
2919: my ($cmd, $tail, $client) = @_;
2920:
2921: my $userinput = "$cmd:$tail";
2922:
1.339 albertel 2923: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
1.231 foxr 2924: chomp($what);
1.255 foxr 2925: my $qresult = read_profile($udom, $uname, $namespace, $what);
2926: my ($first) = split(/:/, $qresult);
2927: if($first ne "error") {
2928:
2929: if ($cipher) {
2930: my $cmdlength=length($qresult);
2931: $qresult.=" ";
2932: my $encqresult='';
2933: for(my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
2934: $encqresult.= unpack("H16",
2935: $cipher->encrypt(substr($qresult,
2936: $encidx,
2937: 8)));
2938: }
2939: &Reply( $client, "enc:$cmdlength:$encqresult\n", $userinput);
2940: } else {
1.231 foxr 2941: &Failure( $client, "error:no_key\n", $userinput);
2942: }
2943: } else {
1.255 foxr 2944: &Failure($client, "$qresult while attempting eget\n", $userinput);
2945:
1.231 foxr 2946: }
2947:
2948: return 1;
2949: }
1.255 foxr 2950: ®ister_handler("eget", \&get_profile_entry_encrypted, 0, 1, 0);
1.263 albertel 2951:
1.231 foxr 2952: #
2953: # Deletes a key in a user profile database.
2954: #
2955: # Parameters:
2956: # $cmd - Command keyword (del).
2957: # $tail - Command tail. IN this case a colon
2958: # separated list containing:
2959: # The domain and user that identifies uniquely
2960: # the identity of the user.
2961: # The profile namespace (name of the profile
2962: # database file).
2963: # & separated list of keywords to delete.
2964: # $client - File open on client socket.
2965: # Returns:
2966: # 1 - Continue processing
2967: # 0 - Exit server.
2968: #
2969: #
2970: sub delete_profile_entry {
2971: my ($cmd, $tail, $client) = @_;
2972:
2973: my $userinput = "cmd:$tail";
2974:
2975: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
2976: chomp($what);
2977: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2978: &GDBM_WRCREAT(),
2979: "D",$what);
2980: if ($hashref) {
2981: my @keys=split(/\&/,$what);
2982: foreach my $key (@keys) {
2983: delete($hashref->{$key});
2984: }
1.315 albertel 2985: if (&untie_user_hash($hashref)) {
1.231 foxr 2986: &Reply($client, "ok\n", $userinput);
2987: } else {
2988: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
2989: "while attempting del\n", $userinput);
2990: }
2991: } else {
2992: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
2993: "while attempting del\n", $userinput);
2994: }
2995: return 1;
2996: }
2997: ®ister_handler("del", \&delete_profile_entry, 0, 1, 0);
1.263 albertel 2998:
1.231 foxr 2999: #
3000: # List the set of keys that are defined in a profile database file.
3001: # A successful reply from this will contain an & separated list of
3002: # the keys.
3003: # Parameters:
3004: # $cmd - Command request (keys).
3005: # $tail - Remainder of the request, a colon separated
3006: # list containing domain/user that identifies the
3007: # user being queried, and the database namespace
3008: # (database filename essentially).
3009: # $client - File open on the client.
3010: # Returns:
3011: # 1 - Continue processing.
3012: # 0 - Exit the server.
3013: #
3014: sub get_profile_keys {
3015: my ($cmd, $tail, $client) = @_;
3016:
3017: my $userinput = "$cmd:$tail";
3018:
3019: my ($udom,$uname,$namespace)=split(/:/,$tail);
3020: my $qresult='';
3021: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3022: &GDBM_READER());
3023: if ($hashref) {
3024: foreach my $key (keys %$hashref) {
3025: $qresult.="$key&";
3026: }
1.315 albertel 3027: if (&untie_user_hash($hashref)) {
1.231 foxr 3028: $qresult=~s/\&$//;
1.387 albertel 3029: &Reply($client, \$qresult, $userinput);
1.231 foxr 3030: } else {
3031: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3032: "while attempting keys\n", $userinput);
3033: }
3034: } else {
3035: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3036: "while attempting keys\n", $userinput);
3037: }
3038:
3039: return 1;
3040: }
3041: ®ister_handler("keys", \&get_profile_keys, 0, 1, 0);
3042:
3043: #
3044: # Dump the contents of a user profile database.
3045: # Note that this constitutes a very large covert channel too since
3046: # the dump will return sensitive information that is not encrypted.
3047: # The naive security assumption is that the session negotiation ensures
3048: # our client is trusted and I don't believe that's assured at present.
3049: # Sure want badly to go to ssl or tls. Of course if my peer isn't really
3050: # a LonCAPA node they could have negotiated an encryption key too so >sigh<.
3051: #
3052: # Parameters:
3053: # $cmd - The command request keyword (currentdump).
3054: # $tail - Remainder of the request, consisting of a colon
3055: # separated list that has the domain/username and
3056: # the namespace to dump (database file).
3057: # $client - file open on the remote client.
3058: # Returns:
3059: # 1 - Continue processing.
3060: # 0 - Exit the server.
3061: #
3062: sub dump_profile_database {
3063: my ($cmd, $tail, $client) = @_;
3064:
3065: my $userinput = "$cmd:$tail";
3066:
3067: my ($udom,$uname,$namespace) = split(/:/,$tail);
3068: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3069: &GDBM_READER());
3070: if ($hashref) {
3071: # Structure of %data:
3072: # $data{$symb}->{$parameter}=$value;
3073: # $data{$symb}->{'v.'.$parameter}=$version;
3074: # since $parameter will be unescaped, we do not
3075: # have to worry about silly parameter names...
3076:
3077: my $qresult='';
3078: my %data = (); # A hash of anonymous hashes..
3079: while (my ($key,$value) = each(%$hashref)) {
3080: my ($v,$symb,$param) = split(/:/,$key);
3081: next if ($v eq 'version' || $symb eq 'keys');
3082: next if (exists($data{$symb}) &&
3083: exists($data{$symb}->{$param}) &&
3084: $data{$symb}->{'v.'.$param} > $v);
3085: $data{$symb}->{$param}=$value;
3086: $data{$symb}->{'v.'.$param}=$v;
3087: }
1.311 albertel 3088: if (&untie_user_hash($hashref)) {
1.231 foxr 3089: while (my ($symb,$param_hash) = each(%data)) {
3090: while(my ($param,$value) = each (%$param_hash)){
3091: next if ($param =~ /^v\./); # Ignore versions...
3092: #
3093: # Just dump the symb=value pairs separated by &
3094: #
3095: $qresult.=$symb.':'.$param.'='.$value.'&';
3096: }
3097: }
3098: chop($qresult);
1.387 albertel 3099: &Reply($client , \$qresult, $userinput);
1.231 foxr 3100: } else {
3101: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3102: "while attempting currentdump\n", $userinput);
3103: }
3104: } else {
3105: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3106: "while attempting currentdump\n", $userinput);
3107: }
3108:
3109: return 1;
3110: }
3111: ®ister_handler("currentdump", \&dump_profile_database, 0, 1, 0);
3112:
3113: #
3114: # Dump a profile database with an optional regular expression
3115: # to match against the keys. In this dump, no effort is made
3116: # to separate symb from version information. Presumably the
3117: # databases that are dumped by this command are of a different
3118: # structure. Need to look at this and improve the documentation of
3119: # both this and the currentdump handler.
3120: # Parameters:
3121: # $cmd - The command keyword.
3122: # $tail - All of the characters after the $cmd:
3123: # These are expected to be a colon
3124: # separated list containing:
3125: # domain/user - identifying the user.
3126: # namespace - identifying the database.
3127: # regexp - optional regular expression
3128: # that is matched against
3129: # database keywords to do
3130: # selective dumps.
3131: # $client - Channel open on the client.
3132: # Returns:
3133: # 1 - Continue processing.
3134: # Side effects:
3135: # response is written to $client.
3136: #
3137: sub dump_with_regexp {
3138: my ($cmd, $tail, $client) = @_;
3139:
3140:
3141: my $userinput = "$cmd:$tail";
3142:
1.306 albertel 3143: my ($udom,$uname,$namespace,$regexp,$range)=split(/:/,$tail);
1.231 foxr 3144: if (defined($regexp)) {
3145: $regexp=&unescape($regexp);
3146: } else {
3147: $regexp='.';
3148: }
1.306 albertel 3149: my ($start,$end);
3150: if (defined($range)) {
3151: if ($range =~/^(\d+)\-(\d+)$/) {
3152: ($start,$end) = ($1,$2);
3153: } elsif ($range =~/^(\d+)$/) {
3154: ($start,$end) = (0,$1);
3155: } else {
3156: undef($range);
3157: }
3158: }
1.231 foxr 3159: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3160: &GDBM_READER());
3161: if ($hashref) {
3162: my $qresult='';
1.306 albertel 3163: my $count=0;
1.231 foxr 3164: while (my ($key,$value) = each(%$hashref)) {
1.432 raeburn 3165: if ($namespace eq 'roles') {
1.446 raeburn 3166: if ($key =~ m{^/($LONCAPA::match_domain)/($LONCAPA::match_community)_(cc|co|in|ta|ep|ad|st|cr)}) {
3167: my $cdom = $1;
3168: my $cnum = $2;
1.447 raeburn 3169: if ($clientversion =~ /^\'?(\d+)\.(\d+)/) {
1.433 raeburn 3170: my $major = $1;
3171: my $minor = $2;
1.435 raeburn 3172: next if (($major < 2) || (($major == 2) && ($minor < 9)));
1.446 raeburn 3173: } else {
3174: my $homeserver = &Apache::lonnet::homeserver($cnum,$cdom);
3175: next unless ($currenthostid eq $homeserver);
1.432 raeburn 3176: }
3177: }
3178: }
1.231 foxr 3179: if ($regexp eq '.') {
1.306 albertel 3180: $count++;
3181: if (defined($range) && $count >= $end) { last; }
3182: if (defined($range) && $count < $start) { next; }
1.231 foxr 3183: $qresult.=$key.'='.$value.'&';
3184: } else {
3185: my $unescapeKey = &unescape($key);
3186: if (eval('$unescapeKey=~/$regexp/')) {
1.306 albertel 3187: $count++;
3188: if (defined($range) && $count >= $end) { last; }
3189: if (defined($range) && $count < $start) { next; }
1.231 foxr 3190: $qresult.="$key=$value&";
3191: }
3192: }
3193: }
1.311 albertel 3194: if (&untie_user_hash($hashref)) {
1.231 foxr 3195: chop($qresult);
1.387 albertel 3196: &Reply($client, \$qresult, $userinput);
1.231 foxr 3197: } else {
3198: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3199: "while attempting dump\n", $userinput);
3200: }
3201: } else {
3202: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3203: "while attempting dump\n", $userinput);
3204: }
3205:
3206: return 1;
3207: }
3208: ®ister_handler("dump", \&dump_with_regexp, 0, 1, 0);
3209:
3210: # Store a set of key=value pairs associated with a versioned name.
3211: #
3212: # Parameters:
3213: # $cmd - Request command keyword.
3214: # $tail - Tail of the request. This is a colon
3215: # separated list containing:
3216: # domain/user - User and authentication domain.
3217: # namespace - Name of the database being modified
3218: # rid - Resource keyword to modify.
3219: # what - new value associated with rid.
3220: #
3221: # $client - Socket open on the client.
3222: #
3223: #
3224: # Returns:
3225: # 1 (keep on processing).
3226: # Side-Effects:
3227: # Writes to the client
3228: sub store_handler {
3229: my ($cmd, $tail, $client) = @_;
3230:
3231: my $userinput = "$cmd:$tail";
3232:
3233: my ($udom,$uname,$namespace,$rid,$what) =split(/:/,$tail);
3234: if ($namespace ne 'roles') {
3235:
3236: chomp($what);
3237: my @pairs=split(/\&/,$what);
3238: my $hashref = &tie_user_hash($udom, $uname, $namespace,
1.268 albertel 3239: &GDBM_WRCREAT(), "S",
1.231 foxr 3240: "$rid:$what");
3241: if ($hashref) {
3242: my $now = time;
3243: my @previouskeys=split(/&/,$hashref->{"keys:$rid"});
3244: my $key;
3245: $hashref->{"version:$rid"}++;
3246: my $version=$hashref->{"version:$rid"};
3247: my $allkeys='';
3248: foreach my $pair (@pairs) {
3249: my ($key,$value)=split(/=/,$pair);
3250: $allkeys.=$key.':';
3251: $hashref->{"$version:$rid:$key"}=$value;
3252: }
3253: $hashref->{"$version:$rid:timestamp"}=$now;
3254: $allkeys.='timestamp';
3255: $hashref->{"$version:keys:$rid"}=$allkeys;
1.311 albertel 3256: if (&untie_user_hash($hashref)) {
1.231 foxr 3257: &Reply($client, "ok\n", $userinput);
3258: } else {
3259: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3260: "while attempting store\n", $userinput);
3261: }
3262: } else {
3263: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3264: "while attempting store\n", $userinput);
3265: }
3266: } else {
3267: &Failure($client, "refused\n", $userinput);
3268: }
3269:
3270: return 1;
3271: }
3272: ®ister_handler("store", \&store_handler, 0, 1, 0);
1.263 albertel 3273:
1.323 albertel 3274: # Modify a set of key=value pairs associated with a versioned name.
3275: #
3276: # Parameters:
3277: # $cmd - Request command keyword.
3278: # $tail - Tail of the request. This is a colon
3279: # separated list containing:
3280: # domain/user - User and authentication domain.
3281: # namespace - Name of the database being modified
3282: # rid - Resource keyword to modify.
3283: # v - Version item to modify
3284: # what - new value associated with rid.
3285: #
3286: # $client - Socket open on the client.
3287: #
3288: #
3289: # Returns:
3290: # 1 (keep on processing).
3291: # Side-Effects:
3292: # Writes to the client
3293: sub putstore_handler {
3294: my ($cmd, $tail, $client) = @_;
3295:
3296: my $userinput = "$cmd:$tail";
3297:
3298: my ($udom,$uname,$namespace,$rid,$v,$what) =split(/:/,$tail);
3299: if ($namespace ne 'roles') {
3300:
3301: chomp($what);
3302: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3303: &GDBM_WRCREAT(), "M",
3304: "$rid:$v:$what");
3305: if ($hashref) {
3306: my $now = time;
3307: my %data = &hash_extract($what);
3308: my @allkeys;
3309: while (my($key,$value) = each(%data)) {
3310: push(@allkeys,$key);
3311: $hashref->{"$v:$rid:$key"} = $value;
3312: }
3313: my $allkeys = join(':',@allkeys);
3314: $hashref->{"$v:keys:$rid"}=$allkeys;
3315:
3316: if (&untie_user_hash($hashref)) {
3317: &Reply($client, "ok\n", $userinput);
3318: } else {
3319: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3320: "while attempting store\n", $userinput);
3321: }
3322: } else {
3323: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3324: "while attempting store\n", $userinput);
3325: }
3326: } else {
3327: &Failure($client, "refused\n", $userinput);
3328: }
3329:
3330: return 1;
3331: }
3332: ®ister_handler("putstore", \&putstore_handler, 0, 1, 0);
3333:
3334: sub hash_extract {
3335: my ($str)=@_;
3336: my %hash;
3337: foreach my $pair (split(/\&/,$str)) {
3338: my ($key,$value)=split(/=/,$pair);
3339: $hash{$key}=$value;
3340: }
3341: return (%hash);
3342: }
3343: sub hash_to_str {
3344: my ($hash_ref)=@_;
3345: my $str;
3346: foreach my $key (keys(%$hash_ref)) {
3347: $str.=$key.'='.$hash_ref->{$key}.'&';
3348: }
3349: $str=~s/\&$//;
3350: return $str;
3351: }
3352:
1.231 foxr 3353: #
3354: # Dump out all versions of a resource that has key=value pairs associated
3355: # with it for each version. These resources are built up via the store
3356: # command.
3357: #
3358: # Parameters:
3359: # $cmd - Command keyword.
3360: # $tail - Remainder of the request which consists of:
3361: # domain/user - User and auth. domain.
3362: # namespace - name of resource database.
3363: # rid - Resource id.
3364: # $client - socket open on the client.
3365: #
3366: # Returns:
3367: # 1 indicating the caller should not yet exit.
3368: # Side-effects:
3369: # Writes a reply to the client.
3370: # The reply is a string of the following shape:
3371: # version=current&version:keys=k1:k2...&1:k1=v1&1:k2=v2...
3372: # Where the 1 above represents version 1.
3373: # this continues for all pairs of keys in all versions.
3374: #
3375: #
3376: #
3377: #
3378: sub restore_handler {
3379: my ($cmd, $tail, $client) = @_;
3380:
3381: my $userinput = "$cmd:$tail"; # Only used for logging purposes.
1.351 banghart 3382: my ($udom,$uname,$namespace,$rid) = split(/:/,$tail);
1.352 albertel 3383: $namespace=~s/\//\_/g;
1.350 albertel 3384: $namespace = &LONCAPA::clean_username($namespace);
1.349 albertel 3385:
1.231 foxr 3386: chomp($rid);
3387: my $qresult='';
1.309 albertel 3388: my $hashref = &tie_user_hash($udom, $uname, $namespace, &GDBM_READER());
3389: if ($hashref) {
3390: my $version=$hashref->{"version:$rid"};
1.231 foxr 3391: $qresult.="version=$version&";
3392: my $scope;
3393: for ($scope=1;$scope<=$version;$scope++) {
1.309 albertel 3394: my $vkeys=$hashref->{"$scope:keys:$rid"};
1.231 foxr 3395: my @keys=split(/:/,$vkeys);
3396: my $key;
3397: $qresult.="$scope:keys=$vkeys&";
3398: foreach $key (@keys) {
1.309 albertel 3399: $qresult.="$scope:$key=".$hashref->{"$scope:$rid:$key"}."&";
1.231 foxr 3400: }
3401: }
1.311 albertel 3402: if (&untie_user_hash($hashref)) {
1.231 foxr 3403: $qresult=~s/\&$//;
1.387 albertel 3404: &Reply( $client, \$qresult, $userinput);
1.231 foxr 3405: } else {
3406: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3407: "while attempting restore\n", $userinput);
3408: }
3409: } else {
3410: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3411: "while attempting restore\n", $userinput);
3412: }
3413:
3414: return 1;
3415:
3416:
3417: }
3418: ®ister_handler("restore", \&restore_handler, 0,1,0);
1.234 foxr 3419:
3420: #
1.324 raeburn 3421: # Add a chat message to a synchronous discussion board.
1.234 foxr 3422: #
3423: # Parameters:
3424: # $cmd - Request keyword.
3425: # $tail - Tail of the command. A colon separated list
3426: # containing:
3427: # cdom - Domain on which the chat board lives
1.324 raeburn 3428: # cnum - Course containing the chat board.
3429: # newpost - Body of the posting.
3430: # group - Optional group, if chat board is only
3431: # accessible in a group within the course
1.234 foxr 3432: # $client - Socket open on the client.
3433: # Returns:
3434: # 1 - Indicating caller should keep on processing.
3435: #
3436: # Side-effects:
3437: # writes a reply to the client.
3438: #
3439: #
3440: sub send_chat_handler {
3441: my ($cmd, $tail, $client) = @_;
3442:
3443:
3444: my $userinput = "$cmd:$tail";
3445:
1.324 raeburn 3446: my ($cdom,$cnum,$newpost,$group)=split(/\:/,$tail);
3447: &chat_add($cdom,$cnum,$newpost,$group);
1.234 foxr 3448: &Reply($client, "ok\n", $userinput);
3449:
3450: return 1;
3451: }
3452: ®ister_handler("chatsend", \&send_chat_handler, 0, 1, 0);
1.263 albertel 3453:
1.234 foxr 3454: #
1.324 raeburn 3455: # Retrieve the set of chat messages from a discussion board.
1.234 foxr 3456: #
3457: # Parameters:
3458: # $cmd - Command keyword that initiated the request.
3459: # $tail - Remainder of the request after the command
3460: # keyword. In this case a colon separated list of
3461: # chat domain - Which discussion board.
3462: # chat id - Discussion thread(?)
3463: # domain/user - Authentication domain and username
3464: # of the requesting person.
1.324 raeburn 3465: # group - Optional course group containing
3466: # the board.
1.234 foxr 3467: # $client - Socket open on the client program.
3468: # Returns:
3469: # 1 - continue processing
3470: # Side effects:
3471: # Response is written to the client.
3472: #
3473: sub retrieve_chat_handler {
3474: my ($cmd, $tail, $client) = @_;
3475:
3476:
3477: my $userinput = "$cmd:$tail";
3478:
1.324 raeburn 3479: my ($cdom,$cnum,$udom,$uname,$group)=split(/\:/,$tail);
1.234 foxr 3480: my $reply='';
1.324 raeburn 3481: foreach (&get_chat($cdom,$cnum,$udom,$uname,$group)) {
1.234 foxr 3482: $reply.=&escape($_).':';
3483: }
3484: $reply=~s/\:$//;
1.387 albertel 3485: &Reply($client, \$reply, $userinput);
1.234 foxr 3486:
3487:
3488: return 1;
3489: }
3490: ®ister_handler("chatretr", \&retrieve_chat_handler, 0, 1, 0);
3491:
3492: #
3493: # Initiate a query of an sql database. SQL query repsonses get put in
3494: # a file for later retrieval. This prevents sql query results from
3495: # bottlenecking the system. Note that with loncnew, perhaps this is
3496: # less of an issue since multiple outstanding requests can be concurrently
3497: # serviced.
3498: #
3499: # Parameters:
3500: # $cmd - COmmand keyword that initiated the request.
3501: # $tail - Remainder of the command after the keyword.
3502: # For this function, this consists of a query and
3503: # 3 arguments that are self-documentingly labelled
3504: # in the original arg1, arg2, arg3.
3505: # $client - Socket open on the client.
3506: # Return:
3507: # 1 - Indicating processing should continue.
3508: # Side-effects:
3509: # a reply is written to $client.
3510: #
3511: sub send_query_handler {
3512: my ($cmd, $tail, $client) = @_;
3513:
3514:
3515: my $userinput = "$cmd:$tail";
3516:
3517: my ($query,$arg1,$arg2,$arg3)=split(/\:/,$tail);
3518: $query=~s/\n*$//g;
3519: &Reply($client, "". &sql_reply("$clientname\&$query".
3520: "\&$arg1"."\&$arg2"."\&$arg3")."\n",
3521: $userinput);
3522:
3523: return 1;
3524: }
3525: ®ister_handler("querysend", \&send_query_handler, 0, 1, 0);
3526:
3527: #
3528: # Add a reply to an sql query. SQL queries are done asyncrhonously.
3529: # The query is submitted via a "querysend" transaction.
3530: # There it is passed on to the lonsql daemon, queued and issued to
3531: # mysql.
3532: # This transaction is invoked when the sql transaction is complete
3533: # it stores the query results in flie and indicates query completion.
3534: # presumably local software then fetches this response... I'm guessing
3535: # the sequence is: lonc does a querysend, we ask lonsql to do it.
3536: # lonsql on completion of the query interacts with the lond of our
3537: # client to do a query reply storing two files:
3538: # - id - The results of the query.
3539: # - id.end - Indicating the transaction completed.
3540: # NOTE: id is a unique id assigned to the query and querysend time.
3541: # Parameters:
3542: # $cmd - Command keyword that initiated this request.
3543: # $tail - Remainder of the tail. In this case that's a colon
3544: # separated list containing the query Id and the
3545: # results of the query.
3546: # $client - Socket open on the client.
3547: # Return:
3548: # 1 - Indicating that we should continue processing.
3549: # Side effects:
3550: # ok written to the client.
3551: #
3552: sub reply_query_handler {
3553: my ($cmd, $tail, $client) = @_;
3554:
3555:
3556: my $userinput = "$cmd:$tail";
3557:
1.339 albertel 3558: my ($id,$reply)=split(/:/,$tail);
1.234 foxr 3559: my $store;
3560: my $execdir=$perlvar{'lonDaemons'};
3561: if ($store=IO::File->new(">$execdir/tmp/$id")) {
3562: $reply=~s/\&/\n/g;
3563: print $store $reply;
3564: close $store;
3565: my $store2=IO::File->new(">$execdir/tmp/$id.end");
3566: print $store2 "done\n";
3567: close $store2;
3568: &Reply($client, "ok\n", $userinput);
3569: } else {
3570: &Failure($client, "error: ".($!+0)
3571: ." IO::File->new Failed ".
3572: "while attempting queryreply\n", $userinput);
3573: }
3574:
3575:
3576: return 1;
3577: }
3578: ®ister_handler("queryreply", \&reply_query_handler, 0, 1, 0);
3579:
3580: #
3581: # Process the courseidput request. Not quite sure what this means
3582: # at the system level sense. It appears a gdbm file in the
3583: # /home/httpd/lonUsers/$domain/nohist_courseids is tied and
3584: # a set of entries made in that database.
3585: #
3586: # Parameters:
3587: # $cmd - The command keyword that initiated this request.
3588: # $tail - Tail of the command. In this case consists of a colon
3589: # separated list contaning the domain to apply this to and
3590: # an ampersand separated list of keyword=value pairs.
1.272 raeburn 3591: # Each value is a colon separated list that includes:
3592: # description, institutional code and course owner.
3593: # For backward compatibility with versions included
3594: # in LON-CAPA 1.1.X (and earlier) and 1.2.X, institutional
3595: # code and/or course owner are preserved from the existing
3596: # record when writing a new record in response to 1.1 or
3597: # 1.2 implementations of lonnet::flushcourselogs().
3598: #
1.234 foxr 3599: # $client - Socket open on the client.
3600: # Returns:
3601: # 1 - indicating that processing should continue
3602: #
3603: # Side effects:
3604: # reply is written to the client.
3605: #
3606: sub put_course_id_handler {
3607: my ($cmd, $tail, $client) = @_;
3608:
3609:
3610: my $userinput = "$cmd:$tail";
3611:
1.266 raeburn 3612: my ($udom, $what) = split(/:/, $tail,2);
1.234 foxr 3613: chomp($what);
3614: my $now=time;
3615: my @pairs=split(/\&/,$what);
3616:
3617: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
3618: if ($hashref) {
3619: foreach my $pair (@pairs) {
1.271 raeburn 3620: my ($key,$courseinfo) = split(/=/,$pair,2);
3621: $courseinfo =~ s/=/:/g;
1.384 raeburn 3622: if (defined($hashref->{$key})) {
3623: my $value = &Apache::lonnet::thaw_unescape($hashref->{$key});
3624: if (ref($value) eq 'HASH') {
3625: my @items = ('description','inst_code','owner','type');
3626: my @new_items = split(/:/,$courseinfo,-1);
3627: my %storehash;
3628: for (my $i=0; $i<@new_items; $i++) {
1.391 raeburn 3629: $storehash{$items[$i]} = &unescape($new_items[$i]);
1.384 raeburn 3630: }
3631: $hashref->{$key} =
3632: &Apache::lonnet::freeze_escape(\%storehash);
3633: my $unesc_key = &unescape($key);
3634: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
3635: next;
1.383 raeburn 3636: }
1.384 raeburn 3637: }
3638: my @current_items = split(/:/,$hashref->{$key},-1);
3639: shift(@current_items); # remove description
3640: pop(@current_items); # remove last access
3641: my $numcurrent = scalar(@current_items);
3642: if ($numcurrent > 3) {
3643: $numcurrent = 3;
3644: }
3645: my @new_items = split(/:/,$courseinfo,-1);
3646: my $numnew = scalar(@new_items);
3647: if ($numcurrent > 0) {
3648: if ($numnew <= $numcurrent) { # flushcourselogs() from pre 2.2
3649: for (my $j=$numcurrent-$numnew; $j>=0; $j--) {
3650: $courseinfo .= ':'.$current_items[$numcurrent-$j-1];
1.333 raeburn 3651: }
1.272 raeburn 3652: }
3653: }
1.384 raeburn 3654: $hashref->{$key}=$courseinfo.':'.$now;
1.234 foxr 3655: }
1.311 albertel 3656: if (&untie_domain_hash($hashref)) {
1.253 foxr 3657: &Reply( $client, "ok\n", $userinput);
1.234 foxr 3658: } else {
1.253 foxr 3659: &Failure($client, "error: ".($!+0)
1.234 foxr 3660: ." untie(GDBM) Failed ".
3661: "while attempting courseidput\n", $userinput);
3662: }
3663: } else {
1.253 foxr 3664: &Failure($client, "error: ".($!+0)
1.234 foxr 3665: ." tie(GDBM) Failed ".
3666: "while attempting courseidput\n", $userinput);
3667: }
3668:
3669: return 1;
3670: }
3671: ®ister_handler("courseidput", \&put_course_id_handler, 0, 1, 0);
3672:
1.383 raeburn 3673: sub put_course_id_hash_handler {
3674: my ($cmd, $tail, $client) = @_;
3675: my $userinput = "$cmd:$tail";
1.384 raeburn 3676: my ($udom,$mode,$what) = split(/:/, $tail,3);
1.383 raeburn 3677: chomp($what);
3678: my $now=time;
3679: my @pairs=split(/\&/,$what);
1.384 raeburn 3680: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
1.383 raeburn 3681: if ($hashref) {
3682: foreach my $pair (@pairs) {
3683: my ($key,$value)=split(/=/,$pair);
1.384 raeburn 3684: my $unesc_key = &unescape($key);
3685: if ($mode ne 'timeonly') {
3686: if (!defined($hashref->{&escape('lasttime:'.$unesc_key)})) {
3687: my $curritems = &Apache::lonnet::thaw_unescape($key);
3688: if (ref($curritems) ne 'HASH') {
3689: my @current_items = split(/:/,$hashref->{$key},-1);
3690: my $lasttime = pop(@current_items);
3691: $hashref->{&escape('lasttime:'.$unesc_key)} = $lasttime;
3692: } else {
3693: $hashref->{&escape('lasttime:'.$unesc_key)} = '';
3694: }
3695: }
3696: $hashref->{$key} = $value;
3697: }
3698: if ($mode ne 'notime') {
3699: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
3700: }
1.383 raeburn 3701: }
3702: if (&untie_domain_hash($hashref)) {
3703: &Reply($client, "ok\n", $userinput);
3704: } else {
3705: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3706: "while attempting courseidputhash\n", $userinput);
3707: }
3708: } else {
3709: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3710: "while attempting courseidputhash\n", $userinput);
3711: }
3712: return 1;
3713: }
3714: ®ister_handler("courseidputhash", \&put_course_id_hash_handler, 0, 1, 0);
3715:
1.234 foxr 3716: # Retrieves the value of a course id resource keyword pattern
3717: # defined since a starting date. Both the starting date and the
3718: # keyword pattern are optional. If the starting date is not supplied it
3719: # is treated as the beginning of time. If the pattern is not found,
3720: # it is treatred as "." matching everything.
3721: #
3722: # Parameters:
3723: # $cmd - Command keyword that resulted in us being dispatched.
3724: # $tail - The remainder of the command that, in this case, consists
3725: # of a colon separated list of:
3726: # domain - The domain in which the course database is
3727: # defined.
3728: # since - Optional parameter describing the minimum
3729: # time of definition(?) of the resources that
3730: # will match the dump.
3731: # description - regular expression that is used to filter
3732: # the dump. Only keywords matching this regexp
3733: # will be used.
1.272 raeburn 3734: # institutional code - optional supplied code to filter
3735: # the dump. Only courses with an institutional code
3736: # that match the supplied code will be returned.
1.336 raeburn 3737: # owner - optional supplied username and domain of owner to
3738: # filter the dump. Only courses for which the course
3739: # owner matches the supplied username and/or domain
3740: # will be returned. Pre-2.2.0 legacy entries from
3741: # nohist_courseiddump will only contain usernames.
1.384 raeburn 3742: # type - optional parameter for selection
1.418 raeburn 3743: # regexp_ok - if 1 or -1 allow the supplied institutional code
3744: # filter to behave as a regular expression:
3745: # 1 will not exclude the course if the instcode matches the RE
3746: # -1 will exclude the course if the instcode matches the RE
1.384 raeburn 3747: # rtn_as_hash - whether to return the information available for
3748: # each matched item as a frozen hash of all
3749: # key, value pairs in the item's hash, or as a
3750: # colon-separated list of (in order) description,
3751: # institutional code, and course owner.
1.404 raeburn 3752: # selfenrollonly - filter by courses allowing self-enrollment
3753: # now or in the future (selfenrollonly = 1).
3754: # catfilter - filter by course category, assigned to a course
3755: # using manually defined categories (i.e., not
1.407 raeburn 3756: # self-cataloging based on on institutional code).
1.404 raeburn 3757: # showhidden - include course in results even if course
1.407 raeburn 3758: # was set to be excluded from course catalog (DC only).
1.404 raeburn 3759: # caller - if set to 'coursecatalog', courses set to be hidden
3760: # from course catalog will be excluded from results (unless
3761: # overridden by "showhidden".
1.427 raeburn 3762: # cloner - escaped username:domain of course cloner (if picking course to
1.419 raeburn 3763: # clone).
3764: # cc_clone_list - escaped comma separated list of courses for which
3765: # course cloner has active CC role (and so can clone
3766: # automatically).
1.427 raeburn 3767: # cloneonly - filter by courses for which cloner has rights to clone.
3768: # createdbefore - include courses for which creation date preceeded this date.
3769: # createdafter - include courses for which creation date followed this date.
3770: # creationcontext - include courses created in specified context
1.404 raeburn 3771: #
1.445 raeburn 3772: # domcloner - flag to indicate if user can create CCs in course's domain.
3773: # If so, ability to clone course is automatic.
3774: #
1.234 foxr 3775: # $client - The socket open on the client.
3776: # Returns:
3777: # 1 - Continue processing.
3778: # Side Effects:
3779: # a reply is written to $client.
3780: sub dump_course_id_handler {
3781: my ($cmd, $tail, $client) = @_;
3782: my $userinput = "$cmd:$tail";
3783:
1.333 raeburn 3784: my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter,
1.404 raeburn 3785: $typefilter,$regexp_ok,$rtn_as_hash,$selfenrollonly,$catfilter,$showhidden,
1.427 raeburn 3786: $caller,$cloner,$cc_clone_list,$cloneonly,$createdbefore,$createdafter,
1.445 raeburn 3787: $creationcontext,$domcloner) =split(/:/,$tail);
1.397 raeburn 3788: my $now = time;
1.419 raeburn 3789: my ($cloneruname,$clonerudom,%cc_clone);
1.234 foxr 3790: if (defined($description)) {
3791: $description=&unescape($description);
3792: } else {
3793: $description='.';
3794: }
1.266 raeburn 3795: if (defined($instcodefilter)) {
3796: $instcodefilter=&unescape($instcodefilter);
3797: } else {
3798: $instcodefilter='.';
3799: }
1.336 raeburn 3800: my ($ownerunamefilter,$ownerdomfilter);
1.266 raeburn 3801: if (defined($ownerfilter)) {
3802: $ownerfilter=&unescape($ownerfilter);
1.336 raeburn 3803: if ($ownerfilter ne '.' && defined($ownerfilter)) {
3804: if ($ownerfilter =~ /^([^:]*):([^:]*)$/) {
3805: $ownerunamefilter = $1;
3806: $ownerdomfilter = $2;
3807: } else {
3808: $ownerunamefilter = $ownerfilter;
3809: $ownerdomfilter = '';
3810: }
3811: }
1.266 raeburn 3812: } else {
3813: $ownerfilter='.';
3814: }
1.336 raeburn 3815:
1.282 raeburn 3816: if (defined($coursefilter)) {
3817: $coursefilter=&unescape($coursefilter);
3818: } else {
3819: $coursefilter='.';
3820: }
1.333 raeburn 3821: if (defined($typefilter)) {
3822: $typefilter=&unescape($typefilter);
3823: } else {
3824: $typefilter='.';
3825: }
1.344 raeburn 3826: if (defined($regexp_ok)) {
3827: $regexp_ok=&unescape($regexp_ok);
3828: }
1.401 raeburn 3829: if (defined($catfilter)) {
3830: $catfilter=&unescape($catfilter);
3831: }
1.419 raeburn 3832: if (defined($cloner)) {
3833: $cloner = &unescape($cloner);
3834: ($cloneruname,$clonerudom) = ($cloner =~ /^($LONCAPA::match_username):($LONCAPA::match_domain)$/);
3835: }
3836: if (defined($cc_clone_list)) {
3837: $cc_clone_list = &unescape($cc_clone_list);
3838: my @cc_cloners = split('&',$cc_clone_list);
3839: foreach my $cid (@cc_cloners) {
3840: my ($clonedom,$clonenum) = split(':',$cid);
3841: next if ($clonedom ne $udom);
3842: $cc_clone{$clonedom.'_'.$clonenum} = 1;
3843: }
3844: }
1.431 raeburn 3845: if ($createdbefore ne '') {
1.427 raeburn 3846: $createdbefore = &unescape($createdbefore);
3847: } else {
3848: $createdbefore = 0;
3849: }
1.431 raeburn 3850: if ($createdafter ne '') {
1.427 raeburn 3851: $createdafter = &unescape($createdafter);
3852: } else {
3853: $createdafter = 0;
3854: }
1.431 raeburn 3855: if ($creationcontext ne '') {
1.427 raeburn 3856: $creationcontext = &unescape($creationcontext);
3857: } else {
3858: $creationcontext = '.';
3859: }
1.384 raeburn 3860: my $unpack = 1;
3861: if ($description eq '.' && $instcodefilter eq '.' && $coursefilter eq '.' &&
3862: $typefilter eq '.') {
3863: $unpack = 0;
3864: }
3865: if (!defined($since)) { $since=0; }
1.234 foxr 3866: my $qresult='';
3867: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
3868: if ($hashref) {
1.384 raeburn 3869: while (my ($key,$value) = each(%$hashref)) {
1.397 raeburn 3870: my ($unesc_key,$lasttime_key,$lasttime,$is_hash,%val,
1.427 raeburn 3871: %unesc_val,$selfenroll_end,$selfenroll_types,$created,
3872: $context);
1.384 raeburn 3873: $unesc_key = &unescape($key);
3874: if ($unesc_key =~ /^lasttime:/) {
3875: next;
3876: } else {
3877: $lasttime_key = &escape('lasttime:'.$unesc_key);
3878: }
3879: if ($hashref->{$lasttime_key} ne '') {
3880: $lasttime = $hashref->{$lasttime_key};
3881: next if ($lasttime<$since);
3882: }
1.419 raeburn 3883: my ($canclone,$valchange);
1.384 raeburn 3884: my $items = &Apache::lonnet::thaw_unescape($value);
3885: if (ref($items) eq 'HASH') {
1.429 raeburn 3886: if ($hashref->{$lasttime_key} eq '') {
1.430 raeburn 3887: next if ($since > 1);
1.429 raeburn 3888: }
1.384 raeburn 3889: $is_hash = 1;
1.445 raeburn 3890: if ($domcloner) {
3891: $canclone = 1;
3892: } elsif (defined($clonerudom)) {
1.419 raeburn 3893: if ($items->{'cloners'}) {
3894: my @cloneable = split(',',$items->{'cloners'});
3895: if (@cloneable) {
3896: if (grep(/^\*$/,@cloneable)) {
3897: $canclone = 1;
3898: } elsif (grep(/^\*:\Q$clonerudom\E$/,@cloneable)) {
3899: $canclone = 1;
3900: } elsif (grep(/^\Q$cloneruname\E:\Q$clonerudom\E$/,@cloneable)) {
3901: $canclone = 1;
3902: }
3903: }
3904: unless ($canclone) {
3905: if ($cloneruname ne '' && $clonerudom ne '') {
3906: if ($cc_clone{$unesc_key}) {
3907: $canclone = 1;
3908: $items->{'cloners'} .= ','.$cloneruname.':'.
3909: $clonerudom;
3910: $valchange = 1;
3911: }
3912: }
3913: }
3914: } elsif (defined($cloneruname)) {
3915: if ($cc_clone{$unesc_key}) {
3916: $canclone = 1;
3917: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
3918: $valchange = 1;
3919: }
1.437 raeburn 3920: unless ($canclone) {
3921: if ($items->{'owner'} =~ /:/) {
3922: if ($items->{'owner'} eq $cloner) {
3923: $canclone = 1;
3924: }
1.444 raeburn 3925: } elsif ($cloner eq $items->{'owner'}.':'.$udom) {
1.437 raeburn 3926: $canclone = 1;
3927: }
3928: if ($canclone) {
3929: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
3930: $valchange = 1;
3931: }
3932: }
1.419 raeburn 3933: }
3934: }
1.384 raeburn 3935: if ($unpack || !$rtn_as_hash) {
3936: $unesc_val{'descr'} = $items->{'description'};
3937: $unesc_val{'inst_code'} = $items->{'inst_code'};
3938: $unesc_val{'owner'} = $items->{'owner'};
3939: $unesc_val{'type'} = $items->{'type'};
1.419 raeburn 3940: $unesc_val{'cloners'} = $items->{'cloners'};
1.427 raeburn 3941: $unesc_val{'created'} = $items->{'created'};
3942: $unesc_val{'context'} = $items->{'context'};
1.404 raeburn 3943: }
3944: $selfenroll_types = $items->{'selfenroll_types'};
3945: $selfenroll_end = $items->{'selfenroll_end_date'};
1.427 raeburn 3946: $created = $items->{'created'};
3947: $context = $items->{'context'};
1.404 raeburn 3948: if ($selfenrollonly) {
3949: next if (!$selfenroll_types);
3950: if (($selfenroll_end > 0) && ($selfenroll_end <= $now)) {
3951: next;
1.397 raeburn 3952: }
1.404 raeburn 3953: }
1.427 raeburn 3954: if ($creationcontext ne '.') {
3955: next if (($context ne '') && ($context ne $creationcontext));
3956: }
3957: if ($createdbefore > 0) {
3958: next if (($created eq '') || ($created > $createdbefore));
3959: }
3960: if ($createdafter > 0) {
3961: next if (($created eq '') || ($created <= $createdafter));
3962: }
1.404 raeburn 3963: if ($catfilter ne '') {
1.406 raeburn 3964: next if ($items->{'categories'} eq '');
3965: my @categories = split('&',$items->{'categories'});
1.407 raeburn 3966: next if (@categories == 0);
3967: my @subcats = split('&',$catfilter);
3968: my $matchcat = 0;
3969: foreach my $cat (@categories) {
3970: if (grep(/^\Q$cat\E$/,@subcats)) {
3971: $matchcat = 1;
3972: last;
3973: }
3974: }
3975: next if (!$matchcat);
1.404 raeburn 3976: }
3977: if ($caller eq 'coursecatalog') {
1.405 raeburn 3978: if ($items->{'hidefromcat'} eq 'yes') {
3979: next if !$showhidden;
1.401 raeburn 3980: }
1.384 raeburn 3981: }
1.383 raeburn 3982: } else {
1.401 raeburn 3983: next if ($catfilter ne '');
1.419 raeburn 3984: next if ($selfenrollonly);
1.427 raeburn 3985: next if ($createdbefore || $createdafter);
3986: next if ($creationcontext ne '.');
1.419 raeburn 3987: if ((defined($clonerudom)) && (defined($cloneruname))) {
3988: if ($cc_clone{$unesc_key}) {
3989: $canclone = 1;
3990: $val{'cloners'} = &escape($cloneruname.':'.$clonerudom);
3991: }
3992: }
1.384 raeburn 3993: $is_hash = 0;
1.388 raeburn 3994: my @courseitems = split(/:/,$value);
1.403 raeburn 3995: $lasttime = pop(@courseitems);
1.402 raeburn 3996: if ($hashref->{$lasttime_key} eq '') {
3997: next if ($lasttime<$since);
3998: }
1.384 raeburn 3999: ($val{'descr'},$val{'inst_code'},$val{'owner'},$val{'type'}) = @courseitems;
1.383 raeburn 4000: }
1.419 raeburn 4001: if ($cloneonly) {
4002: next unless ($canclone);
4003: }
1.266 raeburn 4004: my $match = 1;
1.384 raeburn 4005: if ($description ne '.') {
4006: if (!$is_hash) {
4007: $unesc_val{'descr'} = &unescape($val{'descr'});
4008: }
4009: if (eval{$unesc_val{'descr'} !~ /\Q$description\E/i}) {
1.266 raeburn 4010: $match = 0;
1.384 raeburn 4011: }
1.266 raeburn 4012: }
1.384 raeburn 4013: if ($instcodefilter ne '.') {
4014: if (!$is_hash) {
4015: $unesc_val{'inst_code'} = &unescape($val{'inst_code'});
4016: }
1.418 raeburn 4017: if ($regexp_ok == 1) {
1.384 raeburn 4018: if (eval{$unesc_val{'inst_code'} !~ /$instcodefilter/}) {
1.344 raeburn 4019: $match = 0;
4020: }
1.418 raeburn 4021: } elsif ($regexp_ok == -1) {
4022: if (eval{$unesc_val{'inst_code'} =~ /$instcodefilter/}) {
4023: $match = 0;
4024: }
1.344 raeburn 4025: } else {
1.384 raeburn 4026: if (eval{$unesc_val{'inst_code'} !~ /\Q$instcodefilter\E/i}) {
1.344 raeburn 4027: $match = 0;
4028: }
1.266 raeburn 4029: }
1.234 foxr 4030: }
1.384 raeburn 4031: if ($ownerfilter ne '.') {
4032: if (!$is_hash) {
4033: $unesc_val{'owner'} = &unescape($val{'owner'});
4034: }
1.336 raeburn 4035: if (($ownerunamefilter ne '') && ($ownerdomfilter ne '')) {
1.384 raeburn 4036: if ($unesc_val{'owner'} =~ /:/) {
4037: if (eval{$unesc_val{'owner'} !~
4038: /\Q$ownerunamefilter\E:\Q$ownerdomfilter\E$/i}) {
1.336 raeburn 4039: $match = 0;
4040: }
4041: } else {
1.384 raeburn 4042: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4043: $match = 0;
4044: }
4045: }
4046: } elsif ($ownerunamefilter ne '') {
1.384 raeburn 4047: if ($unesc_val{'owner'} =~ /:/) {
4048: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E:[^:]+$/i}) {
1.336 raeburn 4049: $match = 0;
4050: }
4051: } else {
1.384 raeburn 4052: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4053: $match = 0;
4054: }
4055: }
4056: } elsif ($ownerdomfilter ne '') {
1.384 raeburn 4057: if ($unesc_val{'owner'} =~ /:/) {
4058: if (eval{$unesc_val{'owner'} !~ /^[^:]+:\Q$ownerdomfilter\E/}) {
1.336 raeburn 4059: $match = 0;
4060: }
4061: } else {
4062: if ($ownerdomfilter ne $udom) {
4063: $match = 0;
4064: }
4065: }
1.266 raeburn 4066: }
4067: }
1.384 raeburn 4068: if ($coursefilter ne '.') {
4069: if (eval{$unesc_key !~ /^$udom(_)\Q$coursefilter\E$/}) {
1.282 raeburn 4070: $match = 0;
4071: }
4072: }
1.384 raeburn 4073: if ($typefilter ne '.') {
4074: if (!$is_hash) {
4075: $unesc_val{'type'} = &unescape($val{'type'});
4076: }
4077: if ($unesc_val{'type'} eq '') {
1.333 raeburn 4078: if ($typefilter ne 'Course') {
4079: $match = 0;
4080: }
1.383 raeburn 4081: } else {
1.384 raeburn 4082: if (eval{$unesc_val{'type'} !~ /^\Q$typefilter\E$/}) {
1.333 raeburn 4083: $match = 0;
4084: }
4085: }
4086: }
1.266 raeburn 4087: if ($match == 1) {
1.384 raeburn 4088: if ($rtn_as_hash) {
4089: if ($is_hash) {
1.419 raeburn 4090: if ($valchange) {
4091: my $newvalue = &Apache::lonnet::freeze_escape($items);
4092: $qresult.=$key.'='.$newvalue.'&';
4093: } else {
4094: $qresult.=$key.'='.$value.'&';
4095: }
1.384 raeburn 4096: } else {
1.388 raeburn 4097: my %rtnhash = ( 'description' => &unescape($val{'descr'}),
4098: 'inst_code' => &unescape($val{'inst_code'}),
4099: 'owner' => &unescape($val{'owner'}),
4100: 'type' => &unescape($val{'type'}),
1.419 raeburn 4101: 'cloners' => &unescape($val{'cloners'}),
1.384 raeburn 4102: );
4103: my $items = &Apache::lonnet::freeze_escape(\%rtnhash);
4104: $qresult.=$key.'='.$items.'&';
4105: }
1.383 raeburn 4106: } else {
1.384 raeburn 4107: if ($is_hash) {
4108: $qresult .= $key.'='.&escape($unesc_val{'descr'}).':'.
4109: &escape($unesc_val{'inst_code'}).':'.
4110: &escape($unesc_val{'owner'}).'&';
4111: } else {
4112: $qresult .= $key.'='.$val{'descr'}.':'.$val{'inst_code'}.
4113: ':'.$val{'owner'}.'&';
4114: }
1.383 raeburn 4115: }
1.266 raeburn 4116: }
1.234 foxr 4117: }
1.311 albertel 4118: if (&untie_domain_hash($hashref)) {
1.234 foxr 4119: chop($qresult);
1.387 albertel 4120: &Reply($client, \$qresult, $userinput);
1.234 foxr 4121: } else {
4122: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4123: "while attempting courseiddump\n", $userinput);
4124: }
4125: } else {
4126: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4127: "while attempting courseiddump\n", $userinput);
4128: }
4129: return 1;
4130: }
4131: ®ister_handler("courseiddump", \&dump_course_id_handler, 0, 1, 0);
1.238 foxr 4132:
1.438 raeburn 4133: sub course_lastaccess_handler {
4134: my ($cmd, $tail, $client) = @_;
4135: my $userinput = "$cmd:$tail";
4136: my ($cdom,$cnum) = split(':',$tail);
4137: my (%lastaccess,$qresult);
4138: my $hashref = &tie_domain_hash($cdom, "nohist_courseids", &GDBM_WRCREAT());
4139: if ($hashref) {
4140: while (my ($key,$value) = each(%$hashref)) {
4141: my ($unesc_key,$lasttime);
4142: $unesc_key = &unescape($key);
4143: if ($cnum) {
4144: next unless ($unesc_key =~ /\Q$cdom\E_\Q$cnum\E$/);
4145: }
4146: if ($unesc_key =~ /^lasttime:($LONCAPA::match_domain\_$LONCAPA::match_courseid)/) {
4147: $lastaccess{$1} = $value;
4148: } else {
4149: my $items = &Apache::lonnet::thaw_unescape($value);
4150: if (ref($items) eq 'HASH') {
4151: unless ($lastaccess{$unesc_key}) {
4152: $lastaccess{$unesc_key} = '';
4153: }
4154: } else {
4155: my @courseitems = split(':',$value);
4156: $lastaccess{$unesc_key} = pop(@courseitems);
4157: }
4158: }
4159: }
4160: foreach my $cid (sort(keys(%lastaccess))) {
4161: $qresult.=&escape($cid).'='.$lastaccess{$cid}.'&';
4162: }
4163: if (&untie_domain_hash($hashref)) {
4164: if ($qresult) {
4165: chop($qresult);
4166: }
4167: &Reply($client, \$qresult, $userinput);
4168: } else {
4169: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4170: "while attempting lastacourseaccess\n", $userinput);
4171: }
4172: } else {
4173: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4174: "while attempting lastcourseaccess\n", $userinput);
4175: }
4176: return 1;
4177: }
4178: ®ister_handler("courselastaccess",\&course_lastaccess_handler, 0, 1, 0);
4179:
1.238 foxr 4180: #
1.348 raeburn 4181: # Puts an unencrypted entry in a namespace db file at the domain level
4182: #
4183: # Parameters:
4184: # $cmd - The command that got us here.
4185: # $tail - Tail of the command (remaining parameters).
4186: # $client - File descriptor connected to client.
4187: # Returns
4188: # 0 - Requested to exit, caller should shut down.
4189: # 1 - Continue processing.
4190: # Side effects:
4191: # reply is written to $client.
4192: #
4193: sub put_domain_handler {
4194: my ($cmd,$tail,$client) = @_;
4195:
4196: my $userinput = "$cmd:$tail";
4197:
4198: my ($udom,$namespace,$what) =split(/:/,$tail,3);
4199: chomp($what);
4200: my @pairs=split(/\&/,$what);
4201: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_WRCREAT(),
4202: "P", $what);
4203: if ($hashref) {
4204: foreach my $pair (@pairs) {
4205: my ($key,$value)=split(/=/,$pair);
4206: $hashref->{$key}=$value;
4207: }
4208: if (&untie_domain_hash($hashref)) {
4209: &Reply($client, "ok\n", $userinput);
4210: } else {
4211: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4212: "while attempting putdom\n", $userinput);
4213: }
4214: } else {
4215: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4216: "while attempting putdom\n", $userinput);
4217: }
4218:
4219: return 1;
4220: }
4221: ®ister_handler("putdom", \&put_domain_handler, 0, 1, 0);
4222:
4223: # Unencrypted get from the namespace database file at the domain level.
4224: # This function retrieves a keyed item from a specific named database in the
4225: # domain directory.
4226: #
4227: # Parameters:
4228: # $cmd - Command request keyword (get).
4229: # $tail - Tail of the command. This is a colon separated list
4230: # consisting of the domain and the 'namespace'
4231: # which selects the gdbm file to do the lookup in,
4232: # & separated list of keys to lookup. Note that
4233: # the values are returned as an & separated list too.
4234: # $client - File descriptor open on the client.
4235: # Returns:
4236: # 1 - Continue processing.
4237: # 0 - Exit.
4238: # Side effects:
4239: # reply is written to $client.
4240: #
4241:
4242: sub get_domain_handler {
4243: my ($cmd, $tail, $client) = @_;
4244:
4245: my $userinput = "$client:$tail";
4246:
4247: my ($udom,$namespace,$what)=split(/:/,$tail,3);
4248: chomp($what);
4249: my @queries=split(/\&/,$what);
4250: my $qresult='';
4251: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_READER());
4252: if ($hashref) {
4253: for (my $i=0;$i<=$#queries;$i++) {
4254: $qresult.="$hashref->{$queries[$i]}&";
4255: }
4256: if (&untie_domain_hash($hashref)) {
4257: $qresult=~s/\&$//;
1.387 albertel 4258: &Reply($client, \$qresult, $userinput);
1.348 raeburn 4259: } else {
4260: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
4261: "while attempting getdom\n",$userinput);
4262: }
4263: } else {
4264: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4265: "while attempting getdom\n",$userinput);
4266: }
4267:
4268: return 1;
4269: }
1.360 raeburn 4270: ®ister_handler("getdom", \&get_domain_handler, 0, 1, 0);
1.348 raeburn 4271:
1.420 raeburn 4272: #
1.238 foxr 4273: # Puts an id to a domains id database.
4274: #
4275: # Parameters:
4276: # $cmd - The command that triggered us.
4277: # $tail - Remainder of the request other than the command. This is a
4278: # colon separated list containing:
4279: # $domain - The domain for which we are writing the id.
4280: # $pairs - The id info to write... this is and & separated list
4281: # of keyword=value.
4282: # $client - Socket open on the client.
4283: # Returns:
4284: # 1 - Continue processing.
4285: # Side effects:
4286: # reply is written to $client.
4287: #
4288: sub put_id_handler {
4289: my ($cmd,$tail,$client) = @_;
4290:
4291:
4292: my $userinput = "$cmd:$tail";
4293:
4294: my ($udom,$what)=split(/:/,$tail);
4295: chomp($what);
4296: my @pairs=split(/\&/,$what);
4297: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
4298: "P", $what);
4299: if ($hashref) {
4300: foreach my $pair (@pairs) {
4301: my ($key,$value)=split(/=/,$pair);
4302: $hashref->{$key}=$value;
4303: }
1.311 albertel 4304: if (&untie_domain_hash($hashref)) {
1.238 foxr 4305: &Reply($client, "ok\n", $userinput);
4306: } else {
4307: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4308: "while attempting idput\n", $userinput);
4309: }
4310: } else {
4311: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4312: "while attempting idput\n", $userinput);
4313: }
4314:
4315: return 1;
4316: }
1.263 albertel 4317: ®ister_handler("idput", \&put_id_handler, 0, 1, 0);
1.238 foxr 4318:
4319: #
4320: # Retrieves a set of id values from the id database.
4321: # Returns an & separated list of results, one for each requested id to the
4322: # client.
4323: #
4324: # Parameters:
4325: # $cmd - Command keyword that caused us to be dispatched.
4326: # $tail - Tail of the command. Consists of a colon separated:
4327: # domain - the domain whose id table we dump
4328: # ids Consists of an & separated list of
4329: # id keywords whose values will be fetched.
4330: # nonexisting keywords will have an empty value.
4331: # $client - Socket open on the client.
4332: #
4333: # Returns:
4334: # 1 - indicating processing should continue.
4335: # Side effects:
4336: # An & separated list of results is written to $client.
4337: #
4338: sub get_id_handler {
4339: my ($cmd, $tail, $client) = @_;
4340:
4341:
4342: my $userinput = "$client:$tail";
4343:
4344: my ($udom,$what)=split(/:/,$tail);
4345: chomp($what);
4346: my @queries=split(/\&/,$what);
4347: my $qresult='';
4348: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_READER());
4349: if ($hashref) {
4350: for (my $i=0;$i<=$#queries;$i++) {
4351: $qresult.="$hashref->{$queries[$i]}&";
4352: }
1.311 albertel 4353: if (&untie_domain_hash($hashref)) {
1.238 foxr 4354: $qresult=~s/\&$//;
1.387 albertel 4355: &Reply($client, \$qresult, $userinput);
1.238 foxr 4356: } else {
4357: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
4358: "while attempting idget\n",$userinput);
4359: }
4360: } else {
4361: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4362: "while attempting idget\n",$userinput);
4363: }
4364:
4365: return 1;
4366: }
1.263 albertel 4367: ®ister_handler("idget", \&get_id_handler, 0, 1, 0);
1.238 foxr 4368:
4369: #
1.299 raeburn 4370: # Puts broadcast e-mail sent by Domain Coordinator in nohist_dcmail database
4371: #
4372: # Parameters
4373: # $cmd - Command keyword that caused us to be dispatched.
4374: # $tail - Tail of the command. Consists of a colon separated:
4375: # domain - the domain whose dcmail we are recording
4376: # email Consists of key=value pair
4377: # where key is unique msgid
4378: # and value is message (in XML)
4379: # $client - Socket open on the client.
4380: #
4381: # Returns:
4382: # 1 - indicating processing should continue.
4383: # Side effects
4384: # reply is written to $client.
4385: #
4386: sub put_dcmail_handler {
4387: my ($cmd,$tail,$client) = @_;
4388: my $userinput = "$cmd:$tail";
4389:
4390: my ($udom,$what)=split(/:/,$tail);
4391: chomp($what);
4392: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
4393: if ($hashref) {
4394: my ($key,$value)=split(/=/,$what);
4395: $hashref->{$key}=$value;
4396: }
1.311 albertel 4397: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4398: &Reply($client, "ok\n", $userinput);
4399: } else {
4400: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4401: "while attempting dcmailput\n", $userinput);
4402: }
4403: return 1;
4404: }
4405: ®ister_handler("dcmailput", \&put_dcmail_handler, 0, 1, 0);
4406:
4407: #
4408: # Retrieves broadcast e-mail from nohist_dcmail database
4409: # Returns to client an & separated list of key=value pairs,
4410: # where key is msgid and value is message information.
4411: #
4412: # Parameters
4413: # $cmd - Command keyword that caused us to be dispatched.
4414: # $tail - Tail of the command. Consists of a colon separated:
4415: # domain - the domain whose dcmail table we dump
4416: # startfilter - beginning of time window
4417: # endfilter - end of time window
4418: # sendersfilter - & separated list of username:domain
4419: # for senders to search for.
4420: # $client - Socket open on the client.
4421: #
4422: # Returns:
4423: # 1 - indicating processing should continue.
4424: # Side effects
4425: # reply (& separated list of msgid=messageinfo pairs) is
4426: # written to $client.
4427: #
4428: sub dump_dcmail_handler {
4429: my ($cmd, $tail, $client) = @_;
4430:
4431: my $userinput = "$cmd:$tail";
4432: my ($udom,$startfilter,$endfilter,$sendersfilter) = split(/:/,$tail);
4433: chomp($sendersfilter);
4434: my @senders = ();
4435: if (defined($startfilter)) {
4436: $startfilter=&unescape($startfilter);
4437: } else {
4438: $startfilter='.';
4439: }
4440: if (defined($endfilter)) {
4441: $endfilter=&unescape($endfilter);
4442: } else {
4443: $endfilter='.';
4444: }
4445: if (defined($sendersfilter)) {
4446: $sendersfilter=&unescape($sendersfilter);
1.300 albertel 4447: @senders = map { &unescape($_) } split(/\&/,$sendersfilter);
1.299 raeburn 4448: }
4449:
4450: my $qresult='';
4451: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
4452: if ($hashref) {
4453: while (my ($key,$value) = each(%$hashref)) {
4454: my $match = 1;
1.303 albertel 4455: my ($timestamp,$subj,$uname,$udom) =
4456: split(/:/,&unescape(&unescape($key)),5); # yes, twice really
1.299 raeburn 4457: $subj = &unescape($subj);
4458: unless ($startfilter eq '.' || !defined($startfilter)) {
4459: if ($timestamp < $startfilter) {
4460: $match = 0;
4461: }
4462: }
4463: unless ($endfilter eq '.' || !defined($endfilter)) {
4464: if ($timestamp > $endfilter) {
4465: $match = 0;
4466: }
4467: }
4468: unless (@senders < 1) {
4469: unless (grep/^$uname:$udom$/,@senders) {
4470: $match = 0;
4471: }
4472: }
4473: if ($match == 1) {
4474: $qresult.=$key.'='.$value.'&';
4475: }
4476: }
1.311 albertel 4477: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4478: chop($qresult);
1.387 albertel 4479: &Reply($client, \$qresult, $userinput);
1.299 raeburn 4480: } else {
4481: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4482: "while attempting dcmaildump\n", $userinput);
4483: }
4484: } else {
4485: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4486: "while attempting dcmaildump\n", $userinput);
4487: }
4488: return 1;
4489: }
4490:
4491: ®ister_handler("dcmaildump", \&dump_dcmail_handler, 0, 1, 0);
4492:
4493: #
4494: # Puts domain roles in nohist_domainroles database
4495: #
4496: # Parameters
4497: # $cmd - Command keyword that caused us to be dispatched.
4498: # $tail - Tail of the command. Consists of a colon separated:
4499: # domain - the domain whose roles we are recording
4500: # role - Consists of key=value pair
4501: # where key is unique role
4502: # and value is start/end date information
4503: # $client - Socket open on the client.
4504: #
4505: # Returns:
4506: # 1 - indicating processing should continue.
4507: # Side effects
4508: # reply is written to $client.
4509: #
4510:
4511: sub put_domainroles_handler {
4512: my ($cmd,$tail,$client) = @_;
4513:
4514: my $userinput = "$cmd:$tail";
4515: my ($udom,$what)=split(/:/,$tail);
4516: chomp($what);
4517: my @pairs=split(/\&/,$what);
4518: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
4519: if ($hashref) {
4520: foreach my $pair (@pairs) {
4521: my ($key,$value)=split(/=/,$pair);
4522: $hashref->{$key}=$value;
4523: }
1.311 albertel 4524: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4525: &Reply($client, "ok\n", $userinput);
4526: } else {
4527: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4528: "while attempting domroleput\n", $userinput);
4529: }
4530: } else {
4531: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4532: "while attempting domroleput\n", $userinput);
4533: }
4534:
4535: return 1;
4536: }
4537:
4538: ®ister_handler("domroleput", \&put_domainroles_handler, 0, 1, 0);
4539:
4540: #
4541: # Retrieves domain roles from nohist_domainroles database
4542: # Returns to client an & separated list of key=value pairs,
4543: # where key is role and value is start and end date information.
4544: #
4545: # Parameters
4546: # $cmd - Command keyword that caused us to be dispatched.
4547: # $tail - Tail of the command. Consists of a colon separated:
4548: # domain - the domain whose domain roles table we dump
4549: # $client - Socket open on the client.
4550: #
4551: # Returns:
4552: # 1 - indicating processing should continue.
4553: # Side effects
4554: # reply (& separated list of role=start/end info pairs) is
4555: # written to $client.
4556: #
4557: sub dump_domainroles_handler {
4558: my ($cmd, $tail, $client) = @_;
4559:
4560: my $userinput = "$cmd:$tail";
4561: my ($udom,$startfilter,$endfilter,$rolesfilter) = split(/:/,$tail);
4562: chomp($rolesfilter);
4563: my @roles = ();
4564: if (defined($startfilter)) {
4565: $startfilter=&unescape($startfilter);
4566: } else {
4567: $startfilter='.';
4568: }
4569: if (defined($endfilter)) {
4570: $endfilter=&unescape($endfilter);
4571: } else {
4572: $endfilter='.';
4573: }
4574: if (defined($rolesfilter)) {
4575: $rolesfilter=&unescape($rolesfilter);
1.300 albertel 4576: @roles = split(/\&/,$rolesfilter);
1.299 raeburn 4577: }
1.421 raeburn 4578:
1.299 raeburn 4579: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
4580: if ($hashref) {
4581: my $qresult = '';
4582: while (my ($key,$value) = each(%$hashref)) {
4583: my $match = 1;
1.421 raeburn 4584: my ($end,$start) = split(/:/,&unescape($value));
1.299 raeburn 4585: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,&unescape($key));
1.421 raeburn 4586: unless (@roles < 1) {
4587: unless (grep/^\Q$trole\E$/,@roles) {
4588: $match = 0;
4589: next;
4590: }
4591: }
1.299 raeburn 4592: unless ($startfilter eq '.' || !defined($startfilter)) {
1.415 raeburn 4593: if ((defined($start)) && ($start >= $startfilter)) {
1.299 raeburn 4594: $match = 0;
1.421 raeburn 4595: next;
1.299 raeburn 4596: }
4597: }
4598: unless ($endfilter eq '.' || !defined($endfilter)) {
1.421 raeburn 4599: if ((defined($end)) && (($end > 0) && ($end <= $endfilter))) {
1.299 raeburn 4600: $match = 0;
1.421 raeburn 4601: next;
1.299 raeburn 4602: }
4603: }
4604: if ($match == 1) {
4605: $qresult.=$key.'='.$value.'&';
4606: }
4607: }
1.311 albertel 4608: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4609: chop($qresult);
1.387 albertel 4610: &Reply($client, \$qresult, $userinput);
1.299 raeburn 4611: } else {
4612: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4613: "while attempting domrolesdump\n", $userinput);
4614: }
4615: } else {
4616: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4617: "while attempting domrolesdump\n", $userinput);
4618: }
4619: return 1;
4620: }
4621:
4622: ®ister_handler("domrolesdump", \&dump_domainroles_handler, 0, 1, 0);
4623:
4624:
1.238 foxr 4625: # Process the tmpput command I'm not sure what this does.. Seems to
4626: # create a file in the lonDaemons/tmp directory of the form $id.tmp
4627: # where Id is the client's ip concatenated with a sequence number.
4628: # The file will contain some value that is passed in. Is this e.g.
4629: # a login token?
4630: #
4631: # Parameters:
4632: # $cmd - The command that got us dispatched.
4633: # $tail - The remainder of the request following $cmd:
4634: # In this case this will be the contents of the file.
4635: # $client - Socket connected to the client.
4636: # Returns:
4637: # 1 indicating processing can continue.
4638: # Side effects:
4639: # A file is created in the local filesystem.
4640: # A reply is sent to the client.
4641: sub tmp_put_handler {
4642: my ($cmd, $what, $client) = @_;
4643:
4644: my $userinput = "$cmd:$what"; # Reconstruct for logging.
4645:
1.347 raeburn 4646: my ($record,$context) = split(/:/,$what);
4647: if ($context ne '') {
4648: chomp($context);
4649: $context = &unescape($context);
4650: }
4651: my ($id,$store);
1.238 foxr 4652: $tmpsnum++;
1.347 raeburn 4653: if ($context eq 'resetpw') {
4654: $id = &md5_hex(&md5_hex(time.{}.rand().$$));
4655: } else {
4656: $id = $$.'_'.$clientip.'_'.$tmpsnum;
4657: }
1.238 foxr 4658: $id=~s/\W/\_/g;
1.347 raeburn 4659: $record=~s/\n//g;
1.238 foxr 4660: my $execdir=$perlvar{'lonDaemons'};
4661: if ($store=IO::File->new(">$execdir/tmp/$id.tmp")) {
1.347 raeburn 4662: print $store $record;
1.238 foxr 4663: close $store;
1.387 albertel 4664: &Reply($client, \$id, $userinput);
1.238 foxr 4665: } else {
4666: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
4667: "while attempting tmpput\n", $userinput);
4668: }
4669: return 1;
4670:
4671: }
4672: ®ister_handler("tmpput", \&tmp_put_handler, 0, 1, 0);
1.263 albertel 4673:
1.238 foxr 4674: # Processes the tmpget command. This command returns the contents
4675: # of a temporary resource file(?) created via tmpput.
4676: #
4677: # Paramters:
4678: # $cmd - Command that got us dispatched.
4679: # $id - Tail of the command, contain the id of the resource
4680: # we want to fetch.
4681: # $client - socket open on the client.
4682: # Return:
4683: # 1 - Inidcating processing can continue.
4684: # Side effects:
4685: # A reply is sent to the client.
4686: #
4687: sub tmp_get_handler {
4688: my ($cmd, $id, $client) = @_;
4689:
4690: my $userinput = "$cmd:$id";
4691:
4692:
4693: $id=~s/\W/\_/g;
4694: my $store;
4695: my $execdir=$perlvar{'lonDaemons'};
4696: if ($store=IO::File->new("$execdir/tmp/$id.tmp")) {
4697: my $reply=<$store>;
1.387 albertel 4698: &Reply( $client, \$reply, $userinput);
1.238 foxr 4699: close $store;
4700: } else {
4701: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
4702: "while attempting tmpget\n", $userinput);
4703: }
4704:
4705: return 1;
4706: }
4707: ®ister_handler("tmpget", \&tmp_get_handler, 0, 1, 0);
1.263 albertel 4708:
1.238 foxr 4709: #
4710: # Process the tmpdel command. This command deletes a temp resource
4711: # created by the tmpput command.
4712: #
4713: # Parameters:
4714: # $cmd - Command that got us here.
4715: # $id - Id of the temporary resource created.
4716: # $client - socket open on the client process.
4717: #
4718: # Returns:
4719: # 1 - Indicating processing should continue.
4720: # Side Effects:
4721: # A file is deleted
4722: # A reply is sent to the client.
4723: sub tmp_del_handler {
4724: my ($cmd, $id, $client) = @_;
4725:
4726: my $userinput= "$cmd:$id";
4727:
4728: chomp($id);
4729: $id=~s/\W/\_/g;
4730: my $execdir=$perlvar{'lonDaemons'};
4731: if (unlink("$execdir/tmp/$id.tmp")) {
4732: &Reply($client, "ok\n", $userinput);
4733: } else {
4734: &Failure( $client, "error: ".($!+0)."Unlink tmp Failed ".
4735: "while attempting tmpdel\n", $userinput);
4736: }
4737:
4738: return 1;
4739:
4740: }
4741: ®ister_handler("tmpdel", \&tmp_del_handler, 0, 1, 0);
1.263 albertel 4742:
1.238 foxr 4743: #
1.246 foxr 4744: # Processes the setannounce command. This command
4745: # creates a file named announce.txt in the top directory of
4746: # the documentn root and sets its contents. The announce.txt file is
4747: # printed in its entirety at the LonCAPA login page. Note:
4748: # once the announcement.txt fileis created it cannot be deleted.
4749: # However, setting the contents of the file to empty removes the
4750: # announcement from the login page of loncapa so who cares.
4751: #
4752: # Parameters:
4753: # $cmd - The command that got us dispatched.
4754: # $announcement - The text of the announcement.
4755: # $client - Socket open on the client process.
4756: # Retunrns:
4757: # 1 - Indicating request processing should continue
4758: # Side Effects:
4759: # The file {DocRoot}/announcement.txt is created.
4760: # A reply is sent to $client.
4761: #
4762: sub set_announce_handler {
4763: my ($cmd, $announcement, $client) = @_;
4764:
4765: my $userinput = "$cmd:$announcement";
4766:
4767: chomp($announcement);
4768: $announcement=&unescape($announcement);
4769: if (my $store=IO::File->new('>'.$perlvar{'lonDocRoot'}.
4770: '/announcement.txt')) {
4771: print $store $announcement;
4772: close $store;
4773: &Reply($client, "ok\n", $userinput);
4774: } else {
4775: &Failure($client, "error: ".($!+0)."\n", $userinput);
4776: }
4777:
4778: return 1;
4779: }
4780: ®ister_handler("setannounce", \&set_announce_handler, 0, 1, 0);
1.263 albertel 4781:
1.246 foxr 4782: #
4783: # Return the version of the daemon. This can be used to determine
4784: # the compatibility of cross version installations or, alternatively to
4785: # simply know who's out of date and who isn't. Note that the version
4786: # is returned concatenated with the tail.
4787: # Parameters:
4788: # $cmd - the request that dispatched to us.
4789: # $tail - Tail of the request (client's version?).
4790: # $client - Socket open on the client.
4791: #Returns:
4792: # 1 - continue processing requests.
4793: # Side Effects:
4794: # Replies with version to $client.
4795: sub get_version_handler {
4796: my ($cmd, $tail, $client) = @_;
4797:
4798: my $userinput = $cmd.$tail;
4799:
4800: &Reply($client, &version($userinput)."\n", $userinput);
4801:
4802:
4803: return 1;
4804: }
4805: ®ister_handler("version", \&get_version_handler, 0, 1, 0);
1.263 albertel 4806:
1.246 foxr 4807: # Set the current host and domain. This is used to support
4808: # multihomed systems. Each IP of the system, or even separate daemons
4809: # on the same IP can be treated as handling a separate lonCAPA virtual
4810: # machine. This command selects the virtual lonCAPA. The client always
4811: # knows the right one since it is lonc and it is selecting the domain/system
4812: # from the hosts.tab file.
4813: # Parameters:
4814: # $cmd - Command that dispatched us.
4815: # $tail - Tail of the command (domain/host requested).
4816: # $socket - Socket open on the client.
4817: #
4818: # Returns:
4819: # 1 - Indicates the program should continue to process requests.
4820: # Side-effects:
4821: # The default domain/system context is modified for this daemon.
4822: # a reply is sent to the client.
4823: #
4824: sub set_virtual_host_handler {
4825: my ($cmd, $tail, $socket) = @_;
4826:
4827: my $userinput ="$cmd:$tail";
4828:
4829: &Reply($client, &sethost($userinput)."\n", $userinput);
4830:
4831:
4832: return 1;
4833: }
1.247 albertel 4834: ®ister_handler("sethost", \&set_virtual_host_handler, 0, 1, 0);
1.246 foxr 4835:
4836: # Process a request to exit:
4837: # - "bye" is sent to the client.
4838: # - The client socket is shutdown and closed.
4839: # - We indicate to the caller that we should exit.
4840: # Formal Parameters:
4841: # $cmd - The command that got us here.
4842: # $tail - Tail of the command (empty).
4843: # $client - Socket open on the tail.
4844: # Returns:
4845: # 0 - Indicating the program should exit!!
4846: #
4847: sub exit_handler {
4848: my ($cmd, $tail, $client) = @_;
4849:
4850: my $userinput = "$cmd:$tail";
4851:
4852: &logthis("Client $clientip ($clientname) hanging up: $userinput");
4853: &Reply($client, "bye\n", $userinput);
4854: $client->shutdown(2); # shutdown the socket forcibly.
4855: $client->close();
4856:
4857: return 0;
4858: }
1.248 foxr 4859: ®ister_handler("exit", \&exit_handler, 0,1,1);
4860: ®ister_handler("init", \&exit_handler, 0,1,1);
4861: ®ister_handler("quit", \&exit_handler, 0,1,1);
4862:
4863: # Determine if auto-enrollment is enabled.
4864: # Note that the original had what I believe to be a defect.
4865: # The original returned 0 if the requestor was not a registerd client.
4866: # It should return "refused".
4867: # Formal Parameters:
4868: # $cmd - The command that invoked us.
4869: # $tail - The tail of the command (Extra command parameters.
4870: # $client - The socket open on the client that issued the request.
4871: # Returns:
4872: # 1 - Indicating processing should continue.
4873: #
4874: sub enrollment_enabled_handler {
4875: my ($cmd, $tail, $client) = @_;
4876: my $userinput = $cmd.":".$tail; # For logging purposes.
4877:
4878:
1.337 albertel 4879: my ($cdom) = split(/:/, $tail, 2); # Domain we're asking about.
4880:
1.248 foxr 4881: my $outcome = &localenroll::run($cdom);
1.387 albertel 4882: &Reply($client, \$outcome, $userinput);
1.248 foxr 4883:
4884: return 1;
4885: }
4886: ®ister_handler("autorun", \&enrollment_enabled_handler, 0, 1, 0);
4887:
1.417 raeburn 4888: #
1.423 raeburn 4889: # Validate an institutional code used for a LON-CAPA course.
1.417 raeburn 4890: #
4891: # Formal Parameters:
4892: # $cmd - The command request that got us dispatched.
4893: # $tail - The tail of the command. In this case,
4894: # this is a colon separated set of words that will be split
4895: # into:
1.424 raeburn 4896: # $dom - The domain for which the check of
4897: # institutional course code will occur.
4898: #
4899: # $instcode - The institutional code for the course
4900: # being requested, or validated for rights
4901: # to request.
4902: #
4903: # $owner - The course requestor (who will be the
4904: # course owner, in the form username:domain
4905: #
1.417 raeburn 4906: # $client - Socket open on the client.
4907: # Returns:
4908: # 1 - Indicating processing should continue.
4909: #
4910: sub validate_instcode_handler {
4911: my ($cmd, $tail, $client) = @_;
4912: my $userinput = "$cmd:$tail";
1.423 raeburn 4913: my ($dom,$instcode,$owner) = split(/:/, $tail);
1.422 raeburn 4914: $instcode = &unescape($instcode);
4915: $owner = &unescape($owner);
1.426 raeburn 4916: my ($outcome,$description) =
4917: &localenroll::validate_instcode($dom,$instcode,$owner);
4918: my $result = &escape($outcome).'&'.&escape($description);
4919: &Reply($client, \$result, $userinput);
1.417 raeburn 4920:
4921: return 1;
4922: }
4923: ®ister_handler("autovalidateinstcode", \&validate_instcode_handler, 0, 1, 0);
4924:
1.248 foxr 4925: # Get the official sections for which auto-enrollment is possible.
4926: # Since the admin people won't know about 'unofficial sections'
4927: # we cannot auto-enroll on them.
4928: # Formal Parameters:
4929: # $cmd - The command request that got us dispatched here.
4930: # $tail - The remainder of the request. In our case this
4931: # will be split into:
4932: # $coursecode - The course name from the admin point of view.
4933: # $cdom - The course's domain(?).
4934: # $client - Socket open on the client.
4935: # Returns:
4936: # 1 - Indiciting processing should continue.
4937: #
4938: sub get_sections_handler {
4939: my ($cmd, $tail, $client) = @_;
4940: my $userinput = "$cmd:$tail";
4941:
4942: my ($coursecode, $cdom) = split(/:/, $tail);
4943: my @secs = &localenroll::get_sections($coursecode,$cdom);
4944: my $seclist = &escape(join(':',@secs));
4945:
1.387 albertel 4946: &Reply($client, \$seclist, $userinput);
1.248 foxr 4947:
4948:
4949: return 1;
4950: }
4951: ®ister_handler("autogetsections", \&get_sections_handler, 0, 1, 0);
4952:
4953: # Validate the owner of a new course section.
4954: #
4955: # Formal Parameters:
4956: # $cmd - Command that got us dispatched.
4957: # $tail - the remainder of the command. For us this consists of a
4958: # colon separated string containing:
4959: # $inst - Course Id from the institutions point of view.
4960: # $owner - Proposed owner of the course.
4961: # $cdom - Domain of the course (from the institutions
4962: # point of view?)..
4963: # $client - Socket open on the client.
4964: #
4965: # Returns:
4966: # 1 - Processing should continue.
4967: #
4968: sub validate_course_owner_handler {
4969: my ($cmd, $tail, $client) = @_;
4970: my $userinput = "$cmd:$tail";
4971: my ($inst_course_id, $owner, $cdom) = split(/:/, $tail);
4972:
1.336 raeburn 4973: $owner = &unescape($owner);
1.248 foxr 4974: my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom);
1.387 albertel 4975: &Reply($client, \$outcome, $userinput);
1.248 foxr 4976:
4977:
4978:
4979: return 1;
4980: }
4981: ®ister_handler("autonewcourse", \&validate_course_owner_handler, 0, 1, 0);
1.263 albertel 4982:
1.248 foxr 4983: #
4984: # Validate a course section in the official schedule of classes
4985: # from the institutions point of view (part of autoenrollment).
4986: #
4987: # Formal Parameters:
4988: # $cmd - The command request that got us dispatched.
4989: # $tail - The tail of the command. In this case,
4990: # this is a colon separated set of words that will be split
4991: # into:
4992: # $inst_course_id - The course/section id from the
4993: # institutions point of view.
4994: # $cdom - The domain from the institutions
4995: # point of view.
4996: # $client - Socket open on the client.
4997: # Returns:
4998: # 1 - Indicating processing should continue.
4999: #
5000: sub validate_course_section_handler {
5001: my ($cmd, $tail, $client) = @_;
5002: my $userinput = "$cmd:$tail";
5003: my ($inst_course_id, $cdom) = split(/:/, $tail);
5004:
5005: my $outcome=&localenroll::validate_courseID($inst_course_id,$cdom);
1.387 albertel 5006: &Reply($client, \$outcome, $userinput);
1.248 foxr 5007:
5008:
5009: return 1;
5010: }
5011: ®ister_handler("autovalidatecourse", \&validate_course_section_handler, 0, 1, 0);
5012:
5013: #
1.340 raeburn 5014: # Validate course owner's access to enrollment data for specific class section.
5015: #
5016: #
5017: # Formal Parameters:
5018: # $cmd - The command request that got us dispatched.
5019: # $tail - The tail of the command. In this case this is a colon separated
5020: # set of words that will be split into:
5021: # $inst_class - Institutional code for the specific class section
5022: # $courseowner - The escaped username:domain of the course owner
5023: # $cdom - The domain of the course from the institution's
5024: # point of view.
5025: # $client - The socket open on the client.
5026: # Returns:
5027: # 1 - continue processing.
5028: #
5029:
5030: sub validate_class_access_handler {
5031: my ($cmd, $tail, $client) = @_;
5032: my $userinput = "$cmd:$tail";
1.383 raeburn 5033: my ($inst_class,$ownerlist,$cdom) = split(/:/, $tail);
1.392 raeburn 5034: my $owners = &unescape($ownerlist);
1.341 albertel 5035: my $outcome;
5036: eval {
5037: local($SIG{__DIE__})='DEFAULT';
1.392 raeburn 5038: $outcome=&localenroll::check_section($inst_class,$owners,$cdom);
1.341 albertel 5039: };
1.387 albertel 5040: &Reply($client,\$outcome, $userinput);
1.340 raeburn 5041:
5042: return 1;
5043: }
5044: ®ister_handler("autovalidateclass_sec", \&validate_class_access_handler, 0, 1, 0);
5045:
5046: #
5047: # Create a password for a new LON-CAPA user added by auto-enrollment.
5048: # Only used for case where authentication method for new user is localauth
1.248 foxr 5049: #
5050: # Formal Parameters:
5051: # $cmd - The command request that got us dispatched.
5052: # $tail - The tail of the command. In this case this is a colon separated
5053: # set of words that will be split into:
1.340 raeburn 5054: # $authparam - An authentication parameter (localauth parameter).
1.248 foxr 5055: # $cdom - The domain of the course from the institution's
5056: # point of view.
5057: # $client - The socket open on the client.
5058: # Returns:
5059: # 1 - continue processing.
5060: #
5061: sub create_auto_enroll_password_handler {
5062: my ($cmd, $tail, $client) = @_;
5063: my $userinput = "$cmd:$tail";
5064:
5065: my ($authparam, $cdom) = split(/:/, $userinput);
5066:
5067: my ($create_passwd,$authchk);
5068: ($authparam,
5069: $create_passwd,
5070: $authchk) = &localenroll::create_password($authparam,$cdom);
5071:
5072: &Reply($client, &escape($authparam.':'.$create_passwd.':'.$authchk)."\n",
5073: $userinput);
5074:
5075:
5076: return 1;
5077: }
5078: ®ister_handler("autocreatepassword", \&create_auto_enroll_password_handler,
5079: 0, 1, 0);
5080:
5081: # Retrieve and remove temporary files created by/during autoenrollment.
5082: #
5083: # Formal Parameters:
5084: # $cmd - The command that got us dispatched.
5085: # $tail - The tail of the command. In our case this is a colon
5086: # separated list that will be split into:
5087: # $filename - The name of the file to remove.
5088: # The filename is given as a path relative to
5089: # the LonCAPA temp file directory.
5090: # $client - Socket open on the client.
5091: #
5092: # Returns:
5093: # 1 - Continue processing.
5094: sub retrieve_auto_file_handler {
5095: my ($cmd, $tail, $client) = @_;
5096: my $userinput = "cmd:$tail";
5097:
5098: my ($filename) = split(/:/, $tail);
5099:
5100: my $source = $perlvar{'lonDaemons'}.'/tmp/'.$filename;
5101: if ( (-e $source) && ($filename ne '') ) {
5102: my $reply = '';
5103: if (open(my $fh,$source)) {
5104: while (<$fh>) {
5105: chomp($_);
5106: $_ =~ s/^\s+//g;
5107: $_ =~ s/\s+$//g;
5108: $reply .= $_;
5109: }
5110: close($fh);
5111: &Reply($client, &escape($reply)."\n", $userinput);
5112:
5113: # Does this have to be uncommented??!? (RF).
5114: #
5115: # unlink($source);
5116: } else {
5117: &Failure($client, "error\n", $userinput);
5118: }
5119: } else {
5120: &Failure($client, "error\n", $userinput);
5121: }
5122:
5123:
5124: return 1;
5125: }
5126: ®ister_handler("autoretrieve", \&retrieve_auto_file_handler, 0,1,0);
5127:
1.423 raeburn 5128: sub crsreq_checks_handler {
5129: my ($cmd, $tail, $client) = @_;
5130: my $userinput = "$cmd:$tail";
5131: my $dom = $tail;
5132: my $result;
1.424 raeburn 5133: my @reqtypes = ('official','unofficial','community');
1.423 raeburn 5134: eval {
5135: local($SIG{__DIE__})='DEFAULT';
5136: my %validations;
1.424 raeburn 5137: my $response = &localenroll::crsreq_checks($dom,\@reqtypes,
5138: \%validations);
1.423 raeburn 5139: if ($response eq 'ok') {
5140: foreach my $key (keys(%validations)) {
5141: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
5142: }
5143: $result =~ s/\&$//;
5144: } else {
5145: $result = 'error';
5146: }
5147: };
5148: if (!$@) {
5149: &Reply($client, \$result, $userinput);
5150: } else {
5151: &Failure($client,"unknown_cmd\n",$userinput);
5152: }
5153: return 1;
5154: }
5155: ®ister_handler("autocrsreqchecks", \&crsreq_checks_handler, 0, 1, 0);
5156:
5157: sub validate_crsreq_handler {
5158: my ($cmd, $tail, $client) = @_;
5159: my $userinput = "$cmd:$tail";
5160: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = split(/:/, $tail);
5161: $instcode = &unescape($instcode);
5162: $owner = &unescape($owner);
5163: $crstype = &unescape($crstype);
5164: $inststatuslist = &unescape($inststatuslist);
5165: $instcode = &unescape($instcode);
5166: $instseclist = &unescape($instseclist);
5167: my $outcome;
5168: eval {
5169: local($SIG{__DIE__})='DEFAULT';
5170: $outcome = &localenroll::validate_crsreq($dom,$owner,$crstype,
5171: $inststatuslist,$instcode,
5172: $instseclist);
5173: };
5174: if (!$@) {
5175: &Reply($client, \$outcome, $userinput);
5176: } else {
5177: &Failure($client,"unknown_cmd\n",$userinput);
5178: }
5179: return 1;
5180: }
5181: ®ister_handler("autocrsreqvalidation", \&validate_crsreq_handler, 0, 1, 0);
5182:
1.248 foxr 5183: #
5184: # Read and retrieve institutional code format (for support form).
5185: # Formal Parameters:
5186: # $cmd - Command that dispatched us.
5187: # $tail - Tail of the command. In this case it conatins
5188: # the course domain and the coursename.
5189: # $client - Socket open on the client.
5190: # Returns:
5191: # 1 - Continue processing.
5192: #
5193: sub get_institutional_code_format_handler {
5194: my ($cmd, $tail, $client) = @_;
5195: my $userinput = "$cmd:$tail";
5196:
5197: my $reply;
5198: my($cdom,$course) = split(/:/,$tail);
5199: my @pairs = split/\&/,$course;
5200: my %instcodes = ();
5201: my %codes = ();
5202: my @codetitles = ();
5203: my %cat_titles = ();
5204: my %cat_order = ();
5205: foreach (@pairs) {
5206: my ($key,$value) = split/=/,$_;
5207: $instcodes{&unescape($key)} = &unescape($value);
5208: }
5209: my $formatreply = &localenroll::instcode_format($cdom,
5210: \%instcodes,
5211: \%codes,
5212: \@codetitles,
5213: \%cat_titles,
5214: \%cat_order);
5215: if ($formatreply eq 'ok') {
1.365 albertel 5216: my $codes_str = &Apache::lonnet::hash2str(%codes);
5217: my $codetitles_str = &Apache::lonnet::array2str(@codetitles);
5218: my $cat_titles_str = &Apache::lonnet::hash2str(%cat_titles);
5219: my $cat_order_str = &Apache::lonnet::hash2str(%cat_order);
1.248 foxr 5220: &Reply($client,
5221: $codes_str.':'.$codetitles_str.':'.$cat_titles_str.':'
5222: .$cat_order_str."\n",
5223: $userinput);
5224: } else {
5225: # this else branch added by RF since if not ok, lonc will
5226: # hang waiting on reply until timeout.
5227: #
5228: &Reply($client, "format_error\n", $userinput);
5229: }
5230:
5231: return 1;
5232: }
1.265 albertel 5233: ®ister_handler("autoinstcodeformat",
5234: \&get_institutional_code_format_handler,0,1,0);
1.246 foxr 5235:
1.345 raeburn 5236: sub get_institutional_defaults_handler {
5237: my ($cmd, $tail, $client) = @_;
5238: my $userinput = "$cmd:$tail";
5239:
5240: my $dom = $tail;
5241: my %defaults_hash;
5242: my @code_order;
5243: my $outcome;
5244: eval {
5245: local($SIG{__DIE__})='DEFAULT';
5246: $outcome = &localenroll::instcode_defaults($dom,\%defaults_hash,
5247: \@code_order);
5248: };
5249: if (!$@) {
5250: if ($outcome eq 'ok') {
5251: my $result='';
5252: while (my ($key,$value) = each(%defaults_hash)) {
5253: $result.=&escape($key).'='.&escape($value).'&';
5254: }
5255: $result .= 'code_order='.&escape(join('&',@code_order));
1.387 albertel 5256: &Reply($client,\$result,$userinput);
1.345 raeburn 5257: } else {
5258: &Reply($client,"error\n", $userinput);
5259: }
5260: } else {
5261: &Failure($client,"unknown_cmd\n",$userinput);
5262: }
5263: }
5264: ®ister_handler("autoinstcodedefaults",
5265: \&get_institutional_defaults_handler,0,1,0);
5266:
1.416 raeburn 5267: sub get_possible_instcodes_handler {
5268: my ($cmd, $tail, $client) = @_;
5269: my $userinput = "$cmd:$tail";
5270:
5271: my $reply;
5272: my $cdom = $tail;
1.417 raeburn 5273: my (@codetitles,%cat_titles,%cat_order,@code_order);
1.416 raeburn 5274: my $formatreply = &localenroll::possible_instcodes($cdom,
5275: \@codetitles,
5276: \%cat_titles,
1.417 raeburn 5277: \%cat_order,
5278: \@code_order);
1.416 raeburn 5279: if ($formatreply eq 'ok') {
5280: my $result = join('&',map {&escape($_);} (@codetitles)).':';
1.417 raeburn 5281: $result .= join('&',map {&escape($_);} (@code_order)).':';
1.416 raeburn 5282: foreach my $key (keys(%cat_titles)) {
5283: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_titles{$key}).'&';
5284: }
5285: $result =~ s/\&$//;
5286: $result .= ':';
5287: foreach my $key (keys(%cat_order)) {
5288: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_order{$key}).'&';
5289: }
5290: $result =~ s/\&$//;
5291: &Reply($client,\$result,$userinput);
5292: } else {
5293: &Reply($client, "format_error\n", $userinput);
5294: }
5295: return 1;
5296: }
5297: ®ister_handler("autopossibleinstcodes",
5298: \&get_possible_instcodes_handler,0,1,0);
5299:
1.381 raeburn 5300: sub get_institutional_user_rules {
5301: my ($cmd, $tail, $client) = @_;
5302: my $userinput = "$cmd:$tail";
5303: my $dom = &unescape($tail);
5304: my (%rules_hash,@rules_order);
5305: my $outcome;
5306: eval {
5307: local($SIG{__DIE__})='DEFAULT';
5308: $outcome = &localenroll::username_rules($dom,\%rules_hash,\@rules_order);
5309: };
5310: if (!$@) {
5311: if ($outcome eq 'ok') {
5312: my $result;
5313: foreach my $key (keys(%rules_hash)) {
5314: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
5315: }
5316: $result =~ s/\&$//;
5317: $result .= ':';
5318: if (@rules_order > 0) {
5319: foreach my $item (@rules_order) {
5320: $result .= &escape($item).'&';
5321: }
5322: }
5323: $result =~ s/\&$//;
1.387 albertel 5324: &Reply($client,\$result,$userinput);
1.381 raeburn 5325: } else {
5326: &Reply($client,"error\n", $userinput);
5327: }
5328: } else {
5329: &Failure($client,"unknown_cmd\n",$userinput);
5330: }
5331: }
5332: ®ister_handler("instuserrules",\&get_institutional_user_rules,0,1,0);
5333:
1.389 raeburn 5334: sub get_institutional_id_rules {
5335: my ($cmd, $tail, $client) = @_;
5336: my $userinput = "$cmd:$tail";
5337: my $dom = &unescape($tail);
5338: my (%rules_hash,@rules_order);
5339: my $outcome;
5340: eval {
5341: local($SIG{__DIE__})='DEFAULT';
5342: $outcome = &localenroll::id_rules($dom,\%rules_hash,\@rules_order);
5343: };
5344: if (!$@) {
5345: if ($outcome eq 'ok') {
5346: my $result;
5347: foreach my $key (keys(%rules_hash)) {
5348: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
5349: }
5350: $result =~ s/\&$//;
5351: $result .= ':';
5352: if (@rules_order > 0) {
5353: foreach my $item (@rules_order) {
5354: $result .= &escape($item).'&';
5355: }
5356: }
5357: $result =~ s/\&$//;
5358: &Reply($client,\$result,$userinput);
5359: } else {
5360: &Reply($client,"error\n", $userinput);
5361: }
5362: } else {
5363: &Failure($client,"unknown_cmd\n",$userinput);
5364: }
5365: }
5366: ®ister_handler("instidrules",\&get_institutional_id_rules,0,1,0);
5367:
1.397 raeburn 5368: sub get_institutional_selfcreate_rules {
1.396 raeburn 5369: my ($cmd, $tail, $client) = @_;
5370: my $userinput = "$cmd:$tail";
5371: my $dom = &unescape($tail);
5372: my (%rules_hash,@rules_order);
5373: my $outcome;
5374: eval {
5375: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 5376: $outcome = &localenroll::selfcreate_rules($dom,\%rules_hash,\@rules_order);
1.396 raeburn 5377: };
5378: if (!$@) {
5379: if ($outcome eq 'ok') {
5380: my $result;
5381: foreach my $key (keys(%rules_hash)) {
5382: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
5383: }
5384: $result =~ s/\&$//;
5385: $result .= ':';
5386: if (@rules_order > 0) {
5387: foreach my $item (@rules_order) {
5388: $result .= &escape($item).'&';
5389: }
5390: }
5391: $result =~ s/\&$//;
5392: &Reply($client,\$result,$userinput);
5393: } else {
5394: &Reply($client,"error\n", $userinput);
5395: }
5396: } else {
5397: &Failure($client,"unknown_cmd\n",$userinput);
5398: }
5399: }
1.397 raeburn 5400: ®ister_handler("instemailrules",\&get_institutional_selfcreate_rules,0,1,0);
1.396 raeburn 5401:
1.381 raeburn 5402:
5403: sub institutional_username_check {
5404: my ($cmd, $tail, $client) = @_;
5405: my $userinput = "$cmd:$tail";
5406: my %rulecheck;
5407: my $outcome;
5408: my ($udom,$uname,@rules) = split(/:/,$tail);
5409: $udom = &unescape($udom);
5410: $uname = &unescape($uname);
5411: @rules = map {&unescape($_);} (@rules);
5412: eval {
5413: local($SIG{__DIE__})='DEFAULT';
5414: $outcome = &localenroll::username_check($udom,$uname,\@rules,\%rulecheck);
5415: };
5416: if (!$@) {
5417: if ($outcome eq 'ok') {
5418: my $result='';
5419: foreach my $key (keys(%rulecheck)) {
5420: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
5421: }
1.387 albertel 5422: &Reply($client,\$result,$userinput);
1.381 raeburn 5423: } else {
5424: &Reply($client,"error\n", $userinput);
5425: }
5426: } else {
5427: &Failure($client,"unknown_cmd\n",$userinput);
5428: }
5429: }
5430: ®ister_handler("instrulecheck",\&institutional_username_check,0,1,0);
5431:
1.389 raeburn 5432: sub institutional_id_check {
5433: my ($cmd, $tail, $client) = @_;
5434: my $userinput = "$cmd:$tail";
5435: my %rulecheck;
5436: my $outcome;
5437: my ($udom,$id,@rules) = split(/:/,$tail);
5438: $udom = &unescape($udom);
5439: $id = &unescape($id);
5440: @rules = map {&unescape($_);} (@rules);
5441: eval {
5442: local($SIG{__DIE__})='DEFAULT';
5443: $outcome = &localenroll::id_check($udom,$id,\@rules,\%rulecheck);
5444: };
5445: if (!$@) {
5446: if ($outcome eq 'ok') {
5447: my $result='';
5448: foreach my $key (keys(%rulecheck)) {
5449: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
5450: }
5451: &Reply($client,\$result,$userinput);
5452: } else {
5453: &Reply($client,"error\n", $userinput);
5454: }
5455: } else {
5456: &Failure($client,"unknown_cmd\n",$userinput);
5457: }
5458: }
5459: ®ister_handler("instidrulecheck",\&institutional_id_check,0,1,0);
1.345 raeburn 5460:
1.397 raeburn 5461: sub institutional_selfcreate_check {
1.396 raeburn 5462: my ($cmd, $tail, $client) = @_;
5463: my $userinput = "$cmd:$tail";
5464: my %rulecheck;
5465: my $outcome;
5466: my ($udom,$email,@rules) = split(/:/,$tail);
5467: $udom = &unescape($udom);
5468: $email = &unescape($email);
5469: @rules = map {&unescape($_);} (@rules);
5470: eval {
5471: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 5472: $outcome = &localenroll::selfcreate_check($udom,$email,\@rules,\%rulecheck);
1.396 raeburn 5473: };
5474: if (!$@) {
5475: if ($outcome eq 'ok') {
5476: my $result='';
5477: foreach my $key (keys(%rulecheck)) {
5478: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
5479: }
5480: &Reply($client,\$result,$userinput);
5481: } else {
5482: &Reply($client,"error\n", $userinput);
5483: }
5484: } else {
5485: &Failure($client,"unknown_cmd\n",$userinput);
5486: }
5487: }
1.397 raeburn 5488: ®ister_handler("instselfcreatecheck",\&institutional_selfcreate_check,0,1,0);
1.396 raeburn 5489:
1.317 raeburn 5490: # Get domain specific conditions for import of student photographs to a course
5491: #
5492: # Retrieves information from photo_permission subroutine in localenroll.
5493: # Returns outcome (ok) if no processing errors, and whether course owner is
5494: # required to accept conditions of use (yes/no).
5495: #
5496: #
5497: sub photo_permission_handler {
5498: my ($cmd, $tail, $client) = @_;
5499: my $userinput = "$cmd:$tail";
5500: my $cdom = $tail;
5501: my ($perm_reqd,$conditions);
1.320 albertel 5502: my $outcome;
5503: eval {
5504: local($SIG{__DIE__})='DEFAULT';
5505: $outcome = &localenroll::photo_permission($cdom,\$perm_reqd,
5506: \$conditions);
5507: };
5508: if (!$@) {
5509: &Reply($client, &escape($outcome.':'.$perm_reqd.':'. $conditions)."\n",
5510: $userinput);
5511: } else {
5512: &Failure($client,"unknown_cmd\n",$userinput);
5513: }
5514: return 1;
1.317 raeburn 5515: }
5516: ®ister_handler("autophotopermission",\&photo_permission_handler,0,1,0);
5517:
5518: #
5519: # Checks if student photo is available for a user in the domain, in the user's
5520: # directory (in /userfiles/internal/studentphoto.jpg).
5521: # Uses localstudentphoto:fetch() to ensure there is an up to date copy of
5522: # the student's photo.
5523:
5524: sub photo_check_handler {
5525: my ($cmd, $tail, $client) = @_;
5526: my $userinput = "$cmd:$tail";
5527: my ($udom,$uname,$pid) = split(/:/,$tail);
5528: $udom = &unescape($udom);
5529: $uname = &unescape($uname);
5530: $pid = &unescape($pid);
5531: my $path=&propath($udom,$uname).'/userfiles/internal/';
5532: if (!-e $path) {
5533: &mkpath($path);
5534: }
5535: my $response;
5536: my $result = &localstudentphoto::fetch($udom,$uname,$pid,\$response);
5537: $result .= ':'.$response;
5538: &Reply($client, &escape($result)."\n",$userinput);
1.320 albertel 5539: return 1;
1.317 raeburn 5540: }
5541: ®ister_handler("autophotocheck",\&photo_check_handler,0,1,0);
5542:
5543: #
5544: # Retrieve information from localenroll about whether to provide a button
5545: # for users who have enbled import of student photos to initiate an
5546: # update of photo files for registered students. Also include
5547: # comment to display alongside button.
5548:
5549: sub photo_choice_handler {
5550: my ($cmd, $tail, $client) = @_;
5551: my $userinput = "$cmd:$tail";
5552: my $cdom = &unescape($tail);
1.320 albertel 5553: my ($update,$comment);
5554: eval {
5555: local($SIG{__DIE__})='DEFAULT';
5556: ($update,$comment) = &localenroll::manager_photo_update($cdom);
5557: };
5558: if (!$@) {
5559: &Reply($client,&escape($update).':'.&escape($comment)."\n",$userinput);
5560: } else {
5561: &Failure($client,"unknown_cmd\n",$userinput);
5562: }
5563: return 1;
1.317 raeburn 5564: }
5565: ®ister_handler("autophotochoice",\&photo_choice_handler,0,1,0);
5566:
1.265 albertel 5567: #
5568: # Gets a student's photo to exist (in the correct image type) in the user's
5569: # directory.
5570: # Formal Parameters:
5571: # $cmd - The command request that got us dispatched.
5572: # $tail - A colon separated set of words that will be split into:
5573: # $domain - student's domain
5574: # $uname - student username
5575: # $type - image type desired
5576: # $client - The socket open on the client.
5577: # Returns:
5578: # 1 - continue processing.
1.317 raeburn 5579:
1.265 albertel 5580: sub student_photo_handler {
5581: my ($cmd, $tail, $client) = @_;
1.317 raeburn 5582: my ($domain,$uname,$ext,$type) = split(/:/, $tail);
1.265 albertel 5583:
1.317 raeburn 5584: my $path=&propath($domain,$uname). '/userfiles/internal/';
5585: my $filename = 'studentphoto.'.$ext;
5586: if ($type eq 'thumbnail') {
5587: $filename = 'studentphoto_tn.'.$ext;
5588: }
5589: if (-e $path.$filename) {
1.265 albertel 5590: &Reply($client,"ok\n","$cmd:$tail");
5591: return 1;
5592: }
5593: &mkpath($path);
1.317 raeburn 5594: my $file;
5595: if ($type eq 'thumbnail') {
1.320 albertel 5596: eval {
5597: local($SIG{__DIE__})='DEFAULT';
5598: $file=&localstudentphoto::fetch_thumbnail($domain,$uname);
5599: };
1.317 raeburn 5600: } else {
5601: $file=&localstudentphoto::fetch($domain,$uname);
5602: }
1.265 albertel 5603: if (!$file) {
5604: &Failure($client,"unavailable\n","$cmd:$tail");
5605: return 1;
5606: }
1.317 raeburn 5607: if (!-e $path.$filename) { &convert_photo($file,$path.$filename); }
5608: if (-e $path.$filename) {
1.265 albertel 5609: &Reply($client,"ok\n","$cmd:$tail");
5610: return 1;
5611: }
5612: &Failure($client,"unable_to_convert\n","$cmd:$tail");
5613: return 1;
5614: }
5615: ®ister_handler("studentphoto", \&student_photo_handler, 0, 1, 0);
1.246 foxr 5616:
1.361 raeburn 5617: sub inst_usertypes_handler {
5618: my ($cmd, $domain, $client) = @_;
5619: my $res;
5620: my $userinput = $cmd.":".$domain; # For logging purposes.
1.370 albertel 5621: my (%typeshash,@order,$result);
5622: eval {
5623: local($SIG{__DIE__})='DEFAULT';
5624: $result=&localenroll::inst_usertypes($domain,\%typeshash,\@order);
5625: };
5626: if ($result eq 'ok') {
1.361 raeburn 5627: if (keys(%typeshash) > 0) {
5628: foreach my $key (keys(%typeshash)) {
5629: $res.=&escape($key).'='.&escape($typeshash{$key}).'&';
5630: }
5631: }
5632: $res=~s/\&$//;
5633: $res .= ':';
5634: if (@order > 0) {
5635: foreach my $item (@order) {
5636: $res .= &escape($item).'&';
5637: }
5638: }
5639: $res=~s/\&$//;
5640: }
1.387 albertel 5641: &Reply($client, \$res, $userinput);
1.361 raeburn 5642: return 1;
5643: }
5644: ®ister_handler("inst_usertypes", \&inst_usertypes_handler, 0, 1, 0);
5645:
1.264 albertel 5646: # mkpath makes all directories for a file, expects an absolute path with a
5647: # file or a trailing / if just a dir is passed
5648: # returns 1 on success 0 on failure
5649: sub mkpath {
5650: my ($file)=@_;
5651: my @parts=split(/\//,$file,-1);
5652: my $now=$parts[0].'/'.$parts[1].'/'.$parts[2];
5653: for (my $i=3;$i<= ($#parts-1);$i++) {
1.265 albertel 5654: $now.='/'.$parts[$i];
1.264 albertel 5655: if (!-e $now) {
5656: if (!mkdir($now,0770)) { return 0; }
5657: }
5658: }
5659: return 1;
5660: }
5661:
1.207 foxr 5662: #---------------------------------------------------------------
5663: #
5664: # Getting, decoding and dispatching requests:
5665: #
5666: #
5667: # Get a Request:
5668: # Gets a Request message from the client. The transaction
5669: # is defined as a 'line' of text. We remove the new line
5670: # from the text line.
1.226 foxr 5671: #
1.211 albertel 5672: sub get_request {
1.207 foxr 5673: my $input = <$client>;
5674: chomp($input);
1.226 foxr 5675:
1.234 foxr 5676: &Debug("get_request: Request = $input\n");
1.207 foxr 5677:
5678: &status('Processing '.$clientname.':'.$input);
5679:
5680: return $input;
5681: }
1.212 foxr 5682: #---------------------------------------------------------------
5683: #
5684: # Process a request. This sub should shrink as each action
5685: # gets farmed out into a separat sub that is registered
5686: # with the dispatch hash.
5687: #
5688: # Parameters:
5689: # user_input - The request received from the client (lonc).
5690: # Returns:
5691: # true to keep processing, false if caller should exit.
5692: #
5693: sub process_request {
5694: my ($userinput) = @_; # Easier for now to break style than to
5695: # fix all the userinput -> user_input.
5696: my $wasenc = 0; # True if request was encrypted.
5697: # ------------------------------------------------------------ See if encrypted
1.322 albertel 5698: # for command
5699: # sethost:<server>
5700: # <command>:<args>
5701: # we just send it to the processor
5702: # for
5703: # sethost:<server>:<command>:<args>
5704: # we do the implict set host and then do the command
5705: if ($userinput =~ /^sethost:/) {
5706: (my $cmd,my $newid,$userinput) = split(':',$userinput,3);
5707: if (defined($userinput)) {
5708: &sethost("$cmd:$newid");
5709: } else {
5710: $userinput = "$cmd:$newid";
5711: }
5712: }
5713:
1.212 foxr 5714: if ($userinput =~ /^enc/) {
5715: $userinput = decipher($userinput);
5716: $wasenc=1;
5717: if(!$userinput) { # Cipher not defined.
1.251 foxr 5718: &Failure($client, "error: Encrypted data without negotated key\n");
1.212 foxr 5719: return 0;
5720: }
5721: }
5722: Debug("process_request: $userinput\n");
5723:
1.213 foxr 5724: #
5725: # The 'correct way' to add a command to lond is now to
5726: # write a sub to execute it and Add it to the command dispatch
5727: # hash via a call to register_handler.. The comments to that
5728: # sub should give you enough to go on to show how to do this
5729: # along with the examples that are building up as this code
5730: # is getting refactored. Until all branches of the
5731: # if/elseif monster below have been factored out into
5732: # separate procesor subs, if the dispatch hash is missing
5733: # the command keyword, we will fall through to the remainder
5734: # of the if/else chain below in order to keep this thing in
5735: # working order throughout the transmogrification.
5736:
5737: my ($command, $tail) = split(/:/, $userinput, 2);
5738: chomp($command);
5739: chomp($tail);
5740: $tail =~ s/(\r)//; # This helps people debugging with e.g. telnet.
1.214 foxr 5741: $command =~ s/(\r)//; # And this too for parameterless commands.
5742: if(!$tail) {
5743: $tail =""; # defined but blank.
5744: }
1.213 foxr 5745:
5746: &Debug("Command received: $command, encoded = $wasenc");
5747:
5748: if(defined $Dispatcher{$command}) {
5749:
5750: my $dispatch_info = $Dispatcher{$command};
5751: my $handler = $$dispatch_info[0];
5752: my $need_encode = $$dispatch_info[1];
5753: my $client_types = $$dispatch_info[2];
5754: Debug("Matched dispatch hash: mustencode: $need_encode "
5755: ."ClientType $client_types");
5756:
5757: # Validate the request:
5758:
5759: my $ok = 1;
5760: my $requesterprivs = 0;
5761: if(&isClient()) {
5762: $requesterprivs |= $CLIENT_OK;
5763: }
5764: if(&isManager()) {
5765: $requesterprivs |= $MANAGER_OK;
5766: }
5767: if($need_encode && (!$wasenc)) {
5768: Debug("Must encode but wasn't: $need_encode $wasenc");
5769: $ok = 0;
5770: }
5771: if(($client_types & $requesterprivs) == 0) {
5772: Debug("Client not privileged to do this operation");
5773: $ok = 0;
5774: }
5775:
5776: if($ok) {
5777: Debug("Dispatching to handler $command $tail");
5778: my $keep_going = &$handler($command, $tail, $client);
5779: return $keep_going;
5780: } else {
5781: Debug("Refusing to dispatch because client did not match requirements");
5782: Failure($client, "refused\n", $userinput);
5783: return 1;
5784: }
5785:
5786: }
5787:
1.262 foxr 5788: print $client "unknown_cmd\n";
1.212 foxr 5789: # -------------------------------------------------------------------- complete
5790: Debug("process_request - returning 1");
5791: return 1;
5792: }
1.207 foxr 5793: #
5794: # Decipher encoded traffic
5795: # Parameters:
5796: # input - Encoded data.
5797: # Returns:
5798: # Decoded data or undef if encryption key was not yet negotiated.
5799: # Implicit input:
5800: # cipher - This global holds the negotiated encryption key.
5801: #
1.211 albertel 5802: sub decipher {
1.207 foxr 5803: my ($input) = @_;
5804: my $output = '';
1.212 foxr 5805:
5806:
1.207 foxr 5807: if($cipher) {
5808: my($enc, $enclength, $encinput) = split(/:/, $input);
5809: for(my $encidx = 0; $encidx < length($encinput); $encidx += 16) {
5810: $output .=
5811: $cipher->decrypt(pack("H16", substr($encinput, $encidx, 16)));
5812: }
5813: return substr($output, 0, $enclength);
5814: } else {
5815: return undef;
5816: }
5817: }
5818:
5819: #
5820: # Register a command processor. This function is invoked to register a sub
5821: # to process a request. Once registered, the ProcessRequest sub can automatically
5822: # dispatch requests to an appropriate sub, and do the top level validity checking
5823: # as well:
5824: # - Is the keyword recognized.
5825: # - Is the proper client type attempting the request.
5826: # - Is the request encrypted if it has to be.
5827: # Parameters:
5828: # $request_name - Name of the request being registered.
5829: # This is the command request that will match
5830: # against the hash keywords to lookup the information
5831: # associated with the dispatch information.
5832: # $procedure - Reference to a sub to call to process the request.
5833: # All subs get called as follows:
5834: # Procedure($cmd, $tail, $replyfd, $key)
5835: # $cmd - the actual keyword that invoked us.
5836: # $tail - the tail of the request that invoked us.
5837: # $replyfd- File descriptor connected to the client
5838: # $must_encode - True if the request must be encoded to be good.
5839: # $client_ok - True if it's ok for a client to request this.
5840: # $manager_ok - True if it's ok for a manager to request this.
5841: # Side effects:
5842: # - On success, the Dispatcher hash has an entry added for the key $RequestName
5843: # - On failure, the program will die as it's a bad internal bug to try to
5844: # register a duplicate command handler.
5845: #
1.211 albertel 5846: sub register_handler {
1.212 foxr 5847: my ($request_name,$procedure,$must_encode, $client_ok,$manager_ok) = @_;
1.207 foxr 5848:
5849: # Don't allow duplication#
5850:
5851: if (defined $Dispatcher{$request_name}) {
5852: die "Attempting to define a duplicate request handler for $request_name\n";
5853: }
5854: # Build the client type mask:
5855:
5856: my $client_type_mask = 0;
5857: if($client_ok) {
5858: $client_type_mask |= $CLIENT_OK;
5859: }
5860: if($manager_ok) {
5861: $client_type_mask |= $MANAGER_OK;
5862: }
5863:
5864: # Enter the hash:
5865:
5866: my @entry = ($procedure, $must_encode, $client_type_mask);
5867:
5868: $Dispatcher{$request_name} = \@entry;
5869:
5870: }
5871:
5872:
5873: #------------------------------------------------------------------
5874:
5875:
5876:
5877:
1.141 foxr 5878: #
1.96 foxr 5879: # Convert an error return code from lcpasswd to a string value.
5880: #
5881: sub lcpasswdstrerror {
5882: my $ErrorCode = shift;
1.97 foxr 5883: if(($ErrorCode < 0) || ($ErrorCode > $lastpwderror)) {
1.96 foxr 5884: return "lcpasswd Unrecognized error return value ".$ErrorCode;
5885: } else {
1.98 foxr 5886: return $passwderrors[$ErrorCode];
1.96 foxr 5887: }
5888: }
5889:
1.97 foxr 5890: #
5891: # Convert an error return code from lcuseradd to a string value:
5892: #
5893: sub lcuseraddstrerror {
5894: my $ErrorCode = shift;
5895: if(($ErrorCode < 0) || ($ErrorCode > $lastadderror)) {
5896: return "lcuseradd - Unrecognized error code: ".$ErrorCode;
5897: } else {
1.98 foxr 5898: return $adderrors[$ErrorCode];
1.97 foxr 5899: }
5900: }
5901:
1.23 harris41 5902: # grabs exception and records it to log before exiting
5903: sub catchexception {
1.27 albertel 5904: my ($error)=@_;
1.25 www 5905: $SIG{'QUIT'}='DEFAULT';
5906: $SIG{__DIE__}='DEFAULT';
1.165 albertel 5907: &status("Catching exception");
1.190 albertel 5908: &logthis("<font color='red'>CRITICAL: "
1.373 albertel 5909: ."ABNORMAL EXIT. Child $$ for server ".$perlvar{'lonHostID'}." died through "
1.27 albertel 5910: ."a crash with this error msg->[$error]</font>");
1.57 www 5911: &logthis('Famous last words: '.$status.' - '.$lastlog);
1.27 albertel 5912: if ($client) { print $client "error: $error\n"; }
1.59 www 5913: $server->close();
1.27 albertel 5914: die($error);
1.23 harris41 5915: }
1.63 www 5916: sub timeout {
1.165 albertel 5917: &status("Handling Timeout");
1.190 albertel 5918: &logthis("<font color='red'>CRITICAL: TIME OUT ".$$."</font>");
1.63 www 5919: &catchexception('Timeout');
5920: }
1.22 harris41 5921: # -------------------------------- Set signal handlers to record abnormal exits
5922:
1.226 foxr 5923:
1.22 harris41 5924: $SIG{'QUIT'}=\&catchexception;
5925: $SIG{__DIE__}=\&catchexception;
5926:
1.81 matthew 5927: # ---------------------------------- Read loncapa_apache.conf and loncapa.conf
1.95 harris41 5928: &status("Read loncapa.conf and loncapa_apache.conf");
5929: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
1.141 foxr 5930: %perlvar=%{$perlvarref};
1.80 harris41 5931: undef $perlvarref;
1.19 www 5932:
1.35 harris41 5933: # ----------------------------- Make sure this process is running from user=www
5934: my $wwwid=getpwnam('www');
5935: if ($wwwid!=$<) {
1.134 albertel 5936: my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
5937: my $subj="LON: $currenthostid User ID mismatch";
1.37 harris41 5938: system("echo 'User ID mismatch. lond must be run as user www.' |\
1.35 harris41 5939: mailto $emailto -s '$subj' > /dev/null");
5940: exit 1;
5941: }
5942:
1.19 www 5943: # --------------------------------------------- Check if other instance running
5944:
5945: my $pidfile="$perlvar{'lonDaemons'}/logs/lond.pid";
5946:
5947: if (-e $pidfile) {
5948: my $lfh=IO::File->new("$pidfile");
5949: my $pide=<$lfh>;
5950: chomp($pide);
1.29 harris41 5951: if (kill 0 => $pide) { die "already running"; }
1.19 www 5952: }
1.1 albertel 5953:
5954: # ------------------------------------------------------------- Read hosts file
5955:
5956:
5957:
5958: # establish SERVER socket, bind and listen.
5959: $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},
5960: Type => SOCK_STREAM,
5961: Proto => 'tcp',
5962: Reuse => 1,
5963: Listen => 10 )
1.29 harris41 5964: or die "making socket: $@\n";
1.1 albertel 5965:
5966: # --------------------------------------------------------- Do global variables
5967:
5968: # global variables
5969:
1.134 albertel 5970: my %children = (); # keys are current child process IDs
1.1 albertel 5971:
5972: sub REAPER { # takes care of dead children
5973: $SIG{CHLD} = \&REAPER;
1.165 albertel 5974: &status("Handling child death");
1.178 foxr 5975: my $pid;
5976: do {
5977: $pid = waitpid(-1,&WNOHANG());
5978: if (defined($children{$pid})) {
5979: &logthis("Child $pid died");
5980: delete($children{$pid});
1.183 albertel 5981: } elsif ($pid > 0) {
1.178 foxr 5982: &logthis("Unknown Child $pid died");
5983: }
5984: } while ( $pid > 0 );
5985: foreach my $child (keys(%children)) {
5986: $pid = waitpid($child,&WNOHANG());
5987: if ($pid > 0) {
5988: &logthis("Child $child - $pid looks like we missed it's death");
5989: delete($children{$pid});
5990: }
1.176 albertel 5991: }
1.165 albertel 5992: &status("Finished Handling child death");
1.1 albertel 5993: }
5994:
5995: sub HUNTSMAN { # signal handler for SIGINT
1.165 albertel 5996: &status("Killing children (INT)");
1.1 albertel 5997: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
5998: kill 'INT' => keys %children;
1.59 www 5999: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.1 albertel 6000: my $execdir=$perlvar{'lonDaemons'};
6001: unlink("$execdir/logs/lond.pid");
1.190 albertel 6002: &logthis("<font color='red'>CRITICAL: Shutting down</font>");
1.165 albertel 6003: &status("Done killing children");
1.1 albertel 6004: exit; # clean up with dignity
6005: }
6006:
6007: sub HUPSMAN { # signal handler for SIGHUP
6008: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
1.165 albertel 6009: &status("Killing children for restart (HUP)");
1.1 albertel 6010: kill 'INT' => keys %children;
1.59 www 6011: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.190 albertel 6012: &logthis("<font color='red'>CRITICAL: Restarting</font>");
1.134 albertel 6013: my $execdir=$perlvar{'lonDaemons'};
1.30 harris41 6014: unlink("$execdir/logs/lond.pid");
1.165 albertel 6015: &status("Restarting self (HUP)");
1.1 albertel 6016: exec("$execdir/lond"); # here we go again
6017: }
6018:
1.144 foxr 6019: #
1.148 foxr 6020: # Reload the Apache daemon's state.
1.150 foxr 6021: # This is done by invoking /home/httpd/perl/apachereload
6022: # a setuid perl script that can be root for us to do this job.
1.148 foxr 6023: #
6024: sub ReloadApache {
1.150 foxr 6025: my $execdir = $perlvar{'lonDaemons'};
6026: my $script = $execdir."/apachereload";
6027: system($script);
1.148 foxr 6028: }
6029:
6030: #
1.144 foxr 6031: # Called in response to a USR2 signal.
6032: # - Reread hosts.tab
6033: # - All children connected to hosts that were removed from hosts.tab
6034: # are killed via SIGINT
6035: # - All children connected to previously existing hosts are sent SIGUSR1
6036: # - Our internal hosts hash is updated to reflect the new contents of
6037: # hosts.tab causing connections from hosts added to hosts.tab to
6038: # now be honored.
6039: #
6040: sub UpdateHosts {
1.165 albertel 6041: &status("Reload hosts.tab");
1.147 foxr 6042: logthis('<font color="blue"> Updating connections </font>');
1.148 foxr 6043: #
6044: # The %children hash has the set of IP's we currently have children
6045: # on. These need to be matched against records in the hosts.tab
6046: # Any ip's no longer in the table get killed off they correspond to
6047: # either dropped or changed hosts. Note that the re-read of the table
6048: # will take care of new and changed hosts as connections come into being.
6049:
1.371 albertel 6050: &Apache::lonnet::reset_hosts_info();
1.148 foxr 6051:
1.368 albertel 6052: foreach my $child (keys(%children)) {
1.148 foxr 6053: my $childip = $children{$child};
1.374 albertel 6054: if ($childip ne '127.0.0.1'
6055: && !defined(&Apache::lonnet::get_hosts_from_ip($childip))) {
1.149 foxr 6056: logthis('<font color="blue"> UpdateHosts killing child '
6057: ." $child for ip $childip </font>");
1.148 foxr 6058: kill('INT', $child);
1.149 foxr 6059: } else {
6060: logthis('<font color="green"> keeping child for ip '
6061: ." $childip (pid=$child) </font>");
1.148 foxr 6062: }
6063: }
6064: ReloadApache;
1.165 albertel 6065: &status("Finished reloading hosts.tab");
1.144 foxr 6066: }
6067:
1.148 foxr 6068:
1.57 www 6069: sub checkchildren {
1.165 albertel 6070: &status("Checking on the children (sending signals)");
1.57 www 6071: &initnewstatus();
6072: &logstatus();
6073: &logthis('Going to check on the children');
1.134 albertel 6074: my $docdir=$perlvar{'lonDocRoot'};
1.61 harris41 6075: foreach (sort keys %children) {
1.221 albertel 6076: #sleep 1;
1.57 www 6077: unless (kill 'USR1' => $_) {
6078: &logthis ('Child '.$_.' is dead');
6079: &logstatus($$.' is dead');
1.221 albertel 6080: delete($children{$_});
1.57 www 6081: }
1.61 harris41 6082: }
1.63 www 6083: sleep 5;
1.212 foxr 6084: $SIG{ALRM} = sub { Debug("timeout");
6085: die "timeout"; };
1.113 albertel 6086: $SIG{__DIE__} = 'DEFAULT';
1.165 albertel 6087: &status("Checking on the children (waiting for reports)");
1.63 www 6088: foreach (sort keys %children) {
6089: unless (-e "$docdir/lon-status/londchld/$_.txt") {
1.113 albertel 6090: eval {
6091: alarm(300);
1.63 www 6092: &logthis('Child '.$_.' did not respond');
1.67 albertel 6093: kill 9 => $_;
1.131 albertel 6094: #$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
6095: #$subj="LON: $currenthostid killed lond process $_";
6096: #my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null`;
6097: #$execdir=$perlvar{'lonDaemons'};
6098: #$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_`;
1.221 albertel 6099: delete($children{$_});
1.113 albertel 6100: alarm(0);
6101: }
1.63 www 6102: }
6103: }
1.113 albertel 6104: $SIG{ALRM} = 'DEFAULT';
1.155 albertel 6105: $SIG{__DIE__} = \&catchexception;
1.165 albertel 6106: &status("Finished checking children");
1.221 albertel 6107: &logthis('Finished Checking children');
1.57 www 6108: }
6109:
1.1 albertel 6110: # --------------------------------------------------------------------- Logging
6111:
6112: sub logthis {
6113: my $message=shift;
6114: my $execdir=$perlvar{'lonDaemons'};
6115: my $fh=IO::File->new(">>$execdir/logs/lond.log");
6116: my $now=time;
6117: my $local=localtime($now);
1.58 www 6118: $lastlog=$local.': '.$message;
1.1 albertel 6119: print $fh "$local ($$): $message\n";
6120: }
6121:
1.77 foxr 6122: # ------------------------- Conditional log if $DEBUG true.
6123: sub Debug {
6124: my $message = shift;
6125: if($DEBUG) {
6126: &logthis($message);
6127: }
6128: }
1.161 foxr 6129:
6130: #
6131: # Sub to do replies to client.. this gives a hook for some
6132: # debug tracing too:
6133: # Parameters:
6134: # fd - File open on client.
6135: # reply - Text to send to client.
6136: # request - Original request from client.
6137: #
6138: sub Reply {
1.192 foxr 6139: my ($fd, $reply, $request) = @_;
1.387 albertel 6140: if (ref($reply)) {
6141: print $fd $$reply;
6142: print $fd "\n";
6143: if ($DEBUG) { Debug("Request was $request Reply was $$reply"); }
6144: } else {
6145: print $fd $reply;
6146: if ($DEBUG) { Debug("Request was $request Reply was $reply"); }
6147: }
1.212 foxr 6148: $Transactions++;
6149: }
6150:
6151:
6152: #
6153: # Sub to report a failure.
6154: # This function:
6155: # - Increments the failure statistic counters.
6156: # - Invokes Reply to send the error message to the client.
6157: # Parameters:
6158: # fd - File descriptor open on the client
6159: # reply - Reply text to emit.
6160: # request - The original request message (used by Reply
6161: # to debug if that's enabled.
6162: # Implicit outputs:
6163: # $Failures- The number of failures is incremented.
6164: # Reply (invoked here) sends a message to the
6165: # client:
6166: #
6167: sub Failure {
6168: my $fd = shift;
6169: my $reply = shift;
6170: my $request = shift;
6171:
6172: $Failures++;
6173: Reply($fd, $reply, $request); # That's simple eh?
1.161 foxr 6174: }
1.57 www 6175: # ------------------------------------------------------------------ Log status
6176:
6177: sub logstatus {
1.178 foxr 6178: &status("Doing logging");
6179: my $docdir=$perlvar{'lonDocRoot'};
6180: {
6181: my $fh=IO::File->new(">$docdir/lon-status/londchld/$$.txt");
1.200 matthew 6182: print $fh $status."\n".$lastlog."\n".time."\n$keymode";
1.178 foxr 6183: $fh->close();
6184: }
1.221 albertel 6185: &status("Finished $$.txt");
6186: {
6187: open(LOG,">>$docdir/lon-status/londstatus.txt");
6188: flock(LOG,LOCK_EX);
6189: print LOG $$."\t".$clientname."\t".$currenthostid."\t"
6190: .$status."\t".$lastlog."\t $keymode\n";
1.275 albertel 6191: flock(LOG,LOCK_UN);
1.221 albertel 6192: close(LOG);
6193: }
1.178 foxr 6194: &status("Finished logging");
1.57 www 6195: }
6196:
6197: sub initnewstatus {
6198: my $docdir=$perlvar{'lonDocRoot'};
6199: my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt");
6200: my $now=time;
6201: my $local=localtime($now);
6202: print $fh "LOND status $local - parent $$\n\n";
1.64 www 6203: opendir(DIR,"$docdir/lon-status/londchld");
1.134 albertel 6204: while (my $filename=readdir(DIR)) {
1.64 www 6205: unlink("$docdir/lon-status/londchld/$filename");
6206: }
6207: closedir(DIR);
1.57 www 6208: }
6209:
6210: # -------------------------------------------------------------- Status setting
6211:
6212: sub status {
6213: my $what=shift;
6214: my $now=time;
6215: my $local=localtime($now);
1.178 foxr 6216: $status=$local.': '.$what;
6217: $0='lond: '.$what.' '.$local;
1.57 www 6218: }
1.11 www 6219:
1.13 www 6220: # -------------------------------------------------------------- Talk to lonsql
6221:
1.234 foxr 6222: sub sql_reply {
1.12 harris41 6223: my ($cmd)=@_;
1.234 foxr 6224: my $answer=&sub_sql_reply($cmd);
6225: if ($answer eq 'con_lost') { $answer=&sub_sql_reply($cmd); }
1.12 harris41 6226: return $answer;
6227: }
6228:
1.234 foxr 6229: sub sub_sql_reply {
1.12 harris41 6230: my ($cmd)=@_;
6231: my $unixsock="mysqlsock";
6232: my $peerfile="$perlvar{'lonSockDir'}/$unixsock";
6233: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
6234: Type => SOCK_STREAM,
6235: Timeout => 10)
6236: or return "con_lost";
1.319 www 6237: print $sclient "$cmd:$currentdomainid\n";
1.12 harris41 6238: my $answer=<$sclient>;
6239: chomp($answer);
6240: if (!$answer) { $answer="con_lost"; }
6241: return $answer;
6242: }
6243:
1.1 albertel 6244: # --------------------------------------- Is this the home server of an author?
1.11 www 6245:
1.1 albertel 6246: sub ishome {
6247: my $author=shift;
6248: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
6249: my ($udom,$uname)=split(/\//,$author);
6250: my $proname=propath($udom,$uname);
6251: if (-e $proname) {
6252: return 'owner';
6253: } else {
6254: return 'not_owner';
6255: }
6256: }
6257:
6258: # ======================================================= Continue main program
6259: # ---------------------------------------------------- Fork once and dissociate
6260:
1.134 albertel 6261: my $fpid=fork;
1.1 albertel 6262: exit if $fpid;
1.29 harris41 6263: die "Couldn't fork: $!" unless defined ($fpid);
1.1 albertel 6264:
1.29 harris41 6265: POSIX::setsid() or die "Can't start new session: $!";
1.1 albertel 6266:
6267: # ------------------------------------------------------- Write our PID on disk
6268:
1.134 albertel 6269: my $execdir=$perlvar{'lonDaemons'};
1.1 albertel 6270: open (PIDSAVE,">$execdir/logs/lond.pid");
6271: print PIDSAVE "$$\n";
6272: close(PIDSAVE);
1.190 albertel 6273: &logthis("<font color='red'>CRITICAL: ---------- Starting ----------</font>");
1.57 www 6274: &status('Starting');
1.1 albertel 6275:
1.106 foxr 6276:
1.1 albertel 6277:
6278: # ----------------------------------------------------- Install signal handlers
6279:
1.57 www 6280:
1.1 albertel 6281: $SIG{CHLD} = \&REAPER;
6282: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
6283: $SIG{HUP} = \&HUPSMAN;
1.57 www 6284: $SIG{USR1} = \&checkchildren;
1.144 foxr 6285: $SIG{USR2} = \&UpdateHosts;
1.106 foxr 6286:
1.148 foxr 6287: # Read the host hashes:
1.368 albertel 6288: &Apache::lonnet::load_hosts_tab();
1.447 raeburn 6289: my %iphost = &Apache::lonnet::get_iphost(1);
1.106 foxr 6290:
1.286 albertel 6291: my $dist=`$perlvar{'lonDaemons'}/distprobe`;
6292:
1.106 foxr 6293: # --------------------------------------------------------------
6294: # Accept connections. When a connection comes in, it is validated
6295: # and if good, a child process is created to process transactions
6296: # along the connection.
6297:
1.1 albertel 6298: while (1) {
1.165 albertel 6299: &status('Starting accept');
1.106 foxr 6300: $client = $server->accept() or next;
1.165 albertel 6301: &status('Accepted '.$client.' off to spawn');
1.386 albertel 6302: make_new_child($client);
1.165 albertel 6303: &status('Finished spawning');
1.1 albertel 6304: }
6305:
1.212 foxr 6306: sub make_new_child {
6307: my $pid;
6308: # my $cipher; # Now global
6309: my $sigset;
1.178 foxr 6310:
1.212 foxr 6311: $client = shift;
6312: &status('Starting new child '.$client);
6313: &logthis('<font color="green"> Attempting to start child ('.$client.
6314: ")</font>");
6315: # block signal for fork
6316: $sigset = POSIX::SigSet->new(SIGINT);
6317: sigprocmask(SIG_BLOCK, $sigset)
6318: or die "Can't block SIGINT for fork: $!\n";
1.178 foxr 6319:
1.212 foxr 6320: die "fork: $!" unless defined ($pid = fork);
1.178 foxr 6321:
1.212 foxr 6322: $client->sockopt(SO_KEEPALIVE, 1); # Enable monitoring of
6323: # connection liveness.
1.178 foxr 6324:
1.212 foxr 6325: #
6326: # Figure out who we're talking to so we can record the peer in
6327: # the pid hash.
6328: #
6329: my $caller = getpeername($client);
6330: my ($port,$iaddr);
6331: if (defined($caller) && length($caller) > 0) {
6332: ($port,$iaddr)=unpack_sockaddr_in($caller);
6333: } else {
6334: &logthis("Unable to determine who caller was, getpeername returned nothing");
6335: }
6336: if (defined($iaddr)) {
6337: $clientip = inet_ntoa($iaddr);
6338: Debug("Connected with $clientip");
6339: } else {
6340: &logthis("Unable to determine clientip");
6341: $clientip='Unavailable';
6342: }
6343:
6344: if ($pid) {
6345: # Parent records the child's birth and returns.
6346: sigprocmask(SIG_UNBLOCK, $sigset)
6347: or die "Can't unblock SIGINT for fork: $!\n";
6348: $children{$pid} = $clientip;
6349: &status('Started child '.$pid);
6350: return;
6351: } else {
6352: # Child can *not* return from this subroutine.
6353: $SIG{INT} = 'DEFAULT'; # make SIGINT kill us as it did before
6354: $SIG{CHLD} = 'DEFAULT'; #make this default so that pwauth returns
6355: #don't get intercepted
6356: $SIG{USR1}= \&logstatus;
6357: $SIG{ALRM}= \&timeout;
6358: $lastlog='Forked ';
6359: $status='Forked';
1.178 foxr 6360:
1.212 foxr 6361: # unblock signals
6362: sigprocmask(SIG_UNBLOCK, $sigset)
6363: or die "Can't unblock SIGINT for fork: $!\n";
1.178 foxr 6364:
1.212 foxr 6365: # my $tmpsnum=0; # Now global
6366: #---------------------------------------------------- kerberos 5 initialization
6367: &Authen::Krb5::init_context();
1.359 raeburn 6368: unless (($dist eq 'fedora5') || ($dist eq 'fedora4') ||
6369: ($dist eq 'fedora6') || ($dist eq 'suse9.3')) {
1.286 albertel 6370: &Authen::Krb5::init_ets();
6371: }
1.209 albertel 6372:
1.212 foxr 6373: &status('Accepted connection');
6374: # =============================================================================
6375: # do something with the connection
6376: # -----------------------------------------------------------------------------
6377: # see if we know client and 'check' for spoof IP by ineffective challenge
1.178 foxr 6378:
1.278 albertel 6379: my $outsideip=$clientip;
6380: if ($clientip eq '127.0.0.1') {
1.368 albertel 6381: $outsideip=&Apache::lonnet::get_host_ip($perlvar{'lonHostID'});
1.278 albertel 6382: }
1.412 foxr 6383: &ReadManagerTable();
1.368 albertel 6384: my $clientrec=defined(&Apache::lonnet::get_hosts_from_ip($outsideip));
1.278 albertel 6385: my $ismanager=($managers{$outsideip} ne undef);
1.432 raeburn 6386: $clientname = "[unknown]";
1.212 foxr 6387: if($clientrec) { # Establish client type.
6388: $ConnectionType = "client";
1.368 albertel 6389: $clientname = (&Apache::lonnet::get_hosts_from_ip($outsideip))[-1];
1.212 foxr 6390: if($ismanager) {
6391: $ConnectionType = "both";
6392: }
6393: } else {
6394: $ConnectionType = "manager";
1.278 albertel 6395: $clientname = $managers{$outsideip};
1.212 foxr 6396: }
6397: my $clientok;
1.178 foxr 6398:
1.212 foxr 6399: if ($clientrec || $ismanager) {
6400: &status("Waiting for init from $clientip $clientname");
6401: &logthis('<font color="yellow">INFO: Connection, '.
6402: $clientip.
6403: " ($clientname) connection type = $ConnectionType </font>" );
6404: &status("Connecting $clientip ($clientname))");
6405: my $remotereq=<$client>;
6406: chomp($remotereq);
6407: Debug("Got init: $remotereq");
1.337 albertel 6408:
1.212 foxr 6409: if ($remotereq =~ /^init/) {
6410: &sethost("sethost:$perlvar{'lonHostID'}");
6411: #
6412: # If the remote is attempting a local init... give that a try:
6413: #
1.432 raeburn 6414: (my $i, my $inittype, $clientversion) = split(/:/, $remotereq);
1.209 albertel 6415:
1.212 foxr 6416: # If the connection type is ssl, but I didn't get my
6417: # certificate files yet, then I'll drop back to
6418: # insecure (if allowed).
6419:
6420: if($inittype eq "ssl") {
6421: my ($ca, $cert) = lonssl::CertificateFile;
6422: my $kfile = lonssl::KeyFile;
6423: if((!$ca) ||
6424: (!$cert) ||
6425: (!$kfile)) {
6426: $inittype = ""; # This forces insecure attempt.
6427: &logthis("<font color=\"blue\"> Certificates not "
6428: ."installed -- trying insecure auth</font>");
1.224 foxr 6429: } else { # SSL certificates are in place so
1.212 foxr 6430: } # Leave the inittype alone.
6431: }
6432:
6433: if($inittype eq "local") {
1.432 raeburn 6434: $clientversion = $perlvar{'lonVersion'};
1.212 foxr 6435: my $key = LocalConnection($client, $remotereq);
6436: if($key) {
6437: Debug("Got local key $key");
6438: $clientok = 1;
6439: my $cipherkey = pack("H32", $key);
6440: $cipher = new IDEA($cipherkey);
6441: print $client "ok:local\n";
1.442 www 6442: &logthis('<font color="green">'
1.212 foxr 6443: . "Successful local authentication </font>");
6444: $keymode = "local"
1.178 foxr 6445: } else {
1.212 foxr 6446: Debug("Failed to get local key");
6447: $clientok = 0;
6448: shutdown($client, 3);
6449: close $client;
1.178 foxr 6450: }
1.212 foxr 6451: } elsif ($inittype eq "ssl") {
6452: my $key = SSLConnection($client);
6453: if ($key) {
6454: $clientok = 1;
6455: my $cipherkey = pack("H32", $key);
6456: $cipher = new IDEA($cipherkey);
6457: &logthis('<font color="green">'
6458: ."Successfull ssl authentication with $clientname </font>");
6459: $keymode = "ssl";
6460:
1.178 foxr 6461: } else {
1.212 foxr 6462: $clientok = 0;
6463: close $client;
1.178 foxr 6464: }
1.212 foxr 6465:
6466: } else {
6467: my $ok = InsecureConnection($client);
6468: if($ok) {
6469: $clientok = 1;
6470: &logthis('<font color="green">'
6471: ."Successful insecure authentication with $clientname </font>");
6472: print $client "ok\n";
6473: $keymode = "insecure";
1.178 foxr 6474: } else {
1.212 foxr 6475: &logthis('<font color="yellow">'
6476: ."Attempted insecure connection disallowed </font>");
6477: close $client;
6478: $clientok = 0;
1.178 foxr 6479:
6480: }
6481: }
1.212 foxr 6482: } else {
6483: &logthis(
6484: "<font color='blue'>WARNING: "
6485: ."$clientip failed to initialize: >$remotereq< </font>");
6486: &status('No init '.$clientip);
6487: }
6488:
6489: } else {
6490: &logthis(
6491: "<font color='blue'>WARNING: Unknown client $clientip</font>");
6492: &status('Hung up on '.$clientip);
6493: }
6494:
6495: if ($clientok) {
6496: # ---------------- New known client connecting, could mean machine online again
1.368 albertel 6497: if (&Apache::lonnet::get_host_ip($currenthostid) ne $clientip
1.367 albertel 6498: && $clientip ne '127.0.0.1') {
1.375 albertel 6499: &Apache::lonnet::reconlonc($clientname);
1.212 foxr 6500: }
6501: &logthis("<font color='green'>Established connection: $clientname</font>");
6502: &status('Will listen to '.$clientname);
6503: # ------------------------------------------------------------ Process requests
6504: my $keep_going = 1;
6505: my $user_input;
1.448 ! raeburn 6506: my $clienthost = &Apache::lonnet::hostname($clientname);
! 6507: my $clientserverhomeID = &Apache::lonnet::get_server_homeID($clienthost);
! 6508: $clienthomedom = &Apache::lonnet::host_domain($clientserverhomeID);
1.212 foxr 6509: while(($user_input = get_request) && $keep_going) {
6510: alarm(120);
6511: Debug("Main: Got $user_input\n");
6512: $keep_going = &process_request($user_input);
1.178 foxr 6513: alarm(0);
1.212 foxr 6514: &status('Listening to '.$clientname." ($keymode)");
1.161 foxr 6515: }
1.212 foxr 6516:
1.59 www 6517: # --------------------------------------------- client unknown or fishy, refuse
1.212 foxr 6518: } else {
1.161 foxr 6519: print $client "refused\n";
6520: $client->close();
1.190 albertel 6521: &logthis("<font color='blue'>WARNING: "
1.161 foxr 6522: ."Rejected client $clientip, closing connection</font>");
6523: }
1.212 foxr 6524: }
1.161 foxr 6525:
1.1 albertel 6526: # =============================================================================
1.161 foxr 6527:
1.190 albertel 6528: &logthis("<font color='red'>CRITICAL: "
1.161 foxr 6529: ."Disconnect from $clientip ($clientname)</font>");
6530:
6531:
6532: # this exit is VERY important, otherwise the child will become
6533: # a producer of more and more children, forking yourself into
6534: # process death.
6535: exit;
1.106 foxr 6536:
1.78 foxr 6537: }
1.261 foxr 6538: #
6539: # Determine if a user is an author for the indicated domain.
6540: #
6541: # Parameters:
6542: # domain - domain to check in .
6543: # user - Name of user to check.
6544: #
6545: # Return:
6546: # 1 - User is an author for domain.
6547: # 0 - User is not an author for domain.
6548: sub is_author {
6549: my ($domain, $user) = @_;
6550:
6551: &Debug("is_author: $user @ $domain");
6552:
6553: my $hashref = &tie_user_hash($domain, $user, "roles",
6554: &GDBM_READER());
6555:
6556: # Author role should show up as a key /domain/_au
1.78 foxr 6557:
1.321 albertel 6558: my $key = "/$domain/_au";
6559: my $value;
6560: if (defined($hashref)) {
6561: $value = $hashref->{$key};
6562: }
1.78 foxr 6563:
1.261 foxr 6564: if(defined($value)) {
6565: &Debug("$user @ $domain is an author");
6566: }
6567:
6568: return defined($value);
6569: }
1.78 foxr 6570: #
6571: # Checks to see if the input roleput request was to set
6572: # an author role. If so, invokes the lchtmldir script to set
6573: # up a correct public_html
6574: # Parameters:
6575: # request - The request sent to the rolesput subchunk.
6576: # We're looking for /domain/_au
6577: # domain - The domain in which the user is having roles doctored.
6578: # user - Name of the user for which the role is being put.
6579: # authtype - The authentication type associated with the user.
6580: #
1.289 albertel 6581: sub manage_permissions {
1.192 foxr 6582: my ($request, $domain, $user, $authtype) = @_;
1.78 foxr 6583:
1.261 foxr 6584: &Debug("manage_permissions: $request $domain $user $authtype");
6585:
1.78 foxr 6586: # See if the request is of the form /$domain/_au
1.289 albertel 6587: if($request =~ /^(\/\Q$domain\E\/_au)$/) { # It's an author rolesput...
1.78 foxr 6588: my $execdir = $perlvar{'lonDaemons'};
6589: my $userhome= "/home/$user" ;
1.134 albertel 6590: &logthis("system $execdir/lchtmldir $userhome $user $authtype");
1.261 foxr 6591: &Debug("Setting homedir permissions for $userhome");
1.78 foxr 6592: system("$execdir/lchtmldir $userhome $user $authtype");
6593: }
6594: }
1.222 foxr 6595:
6596:
6597: #
6598: # Return the full path of a user password file, whether it exists or not.
6599: # Parameters:
6600: # domain - Domain in which the password file lives.
6601: # user - name of the user.
6602: # Returns:
6603: # Full passwd path:
6604: #
6605: sub password_path {
6606: my ($domain, $user) = @_;
1.264 albertel 6607: return &propath($domain, $user).'/passwd';
1.222 foxr 6608: }
6609:
6610: # Password Filename
6611: # Returns the path to a passwd file given domain and user... only if
6612: # it exists.
6613: # Parameters:
6614: # domain - Domain in which to search.
6615: # user - username.
6616: # Returns:
6617: # - If the password file exists returns its path.
6618: # - If the password file does not exist, returns undefined.
6619: #
6620: sub password_filename {
6621: my ($domain, $user) = @_;
6622:
6623: Debug ("PasswordFilename called: dom = $domain user = $user");
6624:
6625: my $path = &password_path($domain, $user);
6626: Debug("PasswordFilename got path: $path");
6627: if(-e $path) {
6628: return $path;
6629: } else {
6630: return undef;
6631: }
6632: }
6633:
6634: #
6635: # Rewrite the contents of the user's passwd file.
6636: # Parameters:
6637: # domain - domain of the user.
6638: # name - User's name.
6639: # contents - New contents of the file.
6640: # Returns:
6641: # 0 - Failed.
6642: # 1 - Success.
6643: #
6644: sub rewrite_password_file {
6645: my ($domain, $user, $contents) = @_;
6646:
6647: my $file = &password_filename($domain, $user);
6648: if (defined $file) {
6649: my $pf = IO::File->new(">$file");
6650: if($pf) {
6651: print $pf "$contents\n";
6652: return 1;
6653: } else {
6654: return 0;
6655: }
6656: } else {
6657: return 0;
6658: }
6659:
6660: }
6661:
1.78 foxr 6662: #
1.222 foxr 6663: # get_auth_type - Determines the authorization type of a user in a domain.
1.78 foxr 6664:
6665: # Returns the authorization type or nouser if there is no such user.
6666: #
1.436 raeburn 6667: sub get_auth_type {
1.192 foxr 6668: my ($domain, $user) = @_;
1.78 foxr 6669:
1.222 foxr 6670: Debug("get_auth_type( $domain, $user ) \n");
1.78 foxr 6671: my $proname = &propath($domain, $user);
6672: my $passwdfile = "$proname/passwd";
6673: if( -e $passwdfile ) {
6674: my $pf = IO::File->new($passwdfile);
6675: my $realpassword = <$pf>;
6676: chomp($realpassword);
1.79 foxr 6677: Debug("Password info = $realpassword\n");
1.78 foxr 6678: my ($authtype, $contentpwd) = split(/:/, $realpassword);
1.79 foxr 6679: Debug("Authtype = $authtype, content = $contentpwd\n");
1.259 raeburn 6680: return "$authtype:$contentpwd";
1.224 foxr 6681: } else {
1.79 foxr 6682: Debug("Returning nouser");
1.78 foxr 6683: return "nouser";
6684: }
1.1 albertel 6685: }
6686:
1.220 foxr 6687: #
6688: # Validate a user given their domain, name and password. This utility
6689: # function is used by both AuthenticateHandler and ChangePasswordHandler
6690: # to validate the login credentials of a user.
6691: # Parameters:
6692: # $domain - The domain being logged into (this is required due to
6693: # the capability for multihomed systems.
6694: # $user - The name of the user being validated.
6695: # $password - The user's propoposed password.
6696: #
6697: # Returns:
6698: # 1 - The domain,user,pasword triplet corresponds to a valid
6699: # user.
6700: # 0 - The domain,user,password triplet is not a valid user.
6701: #
6702: sub validate_user {
1.396 raeburn 6703: my ($domain, $user, $password, $checkdefauth) = @_;
1.220 foxr 6704:
6705: # Why negative ~pi you may well ask? Well this function is about
6706: # authentication, and therefore very important to get right.
6707: # I've initialized the flag that determines whether or not I've
6708: # validated correctly to a value it's not supposed to get.
6709: # At the end of this function. I'll ensure that it's not still that
6710: # value so we don't just wind up returning some accidental value
6711: # as a result of executing an unforseen code path that
1.249 foxr 6712: # did not set $validated. At the end of valid execution paths,
6713: # validated shoule be 1 for success or 0 for failuer.
1.220 foxr 6714:
6715: my $validated = -3.14159;
6716:
6717: # How we authenticate is determined by the type of authentication
6718: # the user has been assigned. If the authentication type is
6719: # "nouser", the user does not exist so we will return 0.
6720:
1.222 foxr 6721: my $contents = &get_auth_type($domain, $user);
1.220 foxr 6722: my ($howpwd, $contentpwd) = split(/:/, $contents);
6723:
6724: my $null = pack("C",0); # Used by kerberos auth types.
6725:
1.395 raeburn 6726: if ($howpwd eq 'nouser') {
1.396 raeburn 6727: if ($checkdefauth) {
6728: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
6729: if ($domdefaults{'auth_def'} eq 'localauth') {
6730: $howpwd = $domdefaults{'auth_def'};
6731: $contentpwd = $domdefaults{'auth_arg_def'};
6732: } elsif ((($domdefaults{'auth_def'} eq 'krb4') ||
6733: ($domdefaults{'auth_def'} eq 'krb5')) &&
6734: ($domdefaults{'auth_arg_def'} ne '')) {
6735: $howpwd = $domdefaults{'auth_def'};
6736: $contentpwd = $domdefaults{'auth_arg_def'};
6737: }
1.395 raeburn 6738: }
6739: }
1.220 foxr 6740: if ($howpwd ne 'nouser') {
6741: if($howpwd eq "internal") { # Encrypted is in local password file.
6742: $validated = (crypt($password, $contentpwd) eq $contentpwd);
6743: }
6744: elsif ($howpwd eq "unix") { # User is a normal unix user.
6745: $contentpwd = (getpwnam($user))[1];
6746: if($contentpwd) {
6747: if($contentpwd eq 'x') { # Shadow password file...
6748: my $pwauth_path = "/usr/local/sbin/pwauth";
6749: open PWAUTH, "|$pwauth_path" or
6750: die "Cannot invoke authentication";
6751: print PWAUTH "$user\n$password\n";
6752: close PWAUTH;
6753: $validated = ! $?;
6754:
6755: } else { # Passwords in /etc/passwd.
6756: $validated = (crypt($password,
6757: $contentpwd) eq $contentpwd);
6758: }
6759: } else {
6760: $validated = 0;
6761: }
1.439 raeburn 6762: } elsif ($howpwd eq "krb4") { # user is in kerberos 4 auth. domain.
6763: my $checkwithkrb5 = 0;
6764: if ($dist =~/^fedora(\d+)$/) {
6765: if ($1 > 11) {
6766: $checkwithkrb5 = 1;
6767: }
6768: } elsif ($dist =~ /^suse([\d.]+)$/) {
6769: if ($1 > 11.1) {
6770: $checkwithkrb5 = 1;
6771: }
6772: }
6773: if ($checkwithkrb5) {
6774: $validated = &krb5_authen($password,$null,$user,$contentpwd);
6775: } else {
6776: $validated = &krb4_authen($password,$null,$user,$contentpwd);
6777: }
1.224 foxr 6778: } elsif ($howpwd eq "krb5") { # User is in kerberos 5 auth. domain.
1.439 raeburn 6779: $validated = &krb5_authen($password,$null,$user,$contentpwd);
1.224 foxr 6780: } elsif ($howpwd eq "localauth") {
1.220 foxr 6781: # Authenticate via installation specific authentcation method:
6782: $validated = &localauth::localauth($user,
6783: $password,
1.353 albertel 6784: $contentpwd,
6785: $domain);
1.358 albertel 6786: if ($validated < 0) {
1.357 albertel 6787: &logthis("localauth for $contentpwd $user:$domain returned a $validated");
6788: $validated = 0;
6789: }
1.224 foxr 6790: } else { # Unrecognized auth is also bad.
1.220 foxr 6791: $validated = 0;
6792: }
6793: } else {
6794: $validated = 0;
6795: }
6796: #
6797: # $validated has the correct stat of the authentication:
6798: #
6799:
6800: unless ($validated != -3.14159) {
1.249 foxr 6801: # I >really really< want to know if this happens.
6802: # since it indicates that user authentication is badly
6803: # broken in some code path.
6804: #
6805: die "ValidateUser - failed to set the value of validated $domain, $user $password";
1.220 foxr 6806: }
6807: return $validated;
6808: }
6809:
1.439 raeburn 6810: sub krb4_authen {
6811: my ($password,$null,$user,$contentpwd) = @_;
6812: my $validated = 0;
6813: if (!($password =~ /$null/) ) { # Null password not allowed.
6814: eval {
6815: require Authen::Krb4;
6816: };
6817: if (!$@) {
6818: my $k4error = &Authen::Krb4::get_pw_in_tkt($user,
6819: "",
6820: $contentpwd,,
6821: 'krbtgt',
6822: $contentpwd,
6823: 1,
6824: $password);
6825: if(!$k4error) {
6826: $validated = 1;
6827: } else {
6828: $validated = 0;
6829: &logthis('krb4: '.$user.', '.$contentpwd.', '.
6830: &Authen::Krb4::get_err_txt($Authen::Krb4::error));
6831: }
6832: } else {
6833: $validated = krb5_authen($password,$null,$user,$contentpwd);
6834: }
6835: }
6836: return $validated;
6837: }
6838:
6839: sub krb5_authen {
6840: my ($password,$null,$user,$contentpwd) = @_;
6841: my $validated = 0;
6842: if(!($password =~ /$null/)) { # Null password not allowed.
6843: my $krbclient = &Authen::Krb5::parse_name($user.'@'
6844: .$contentpwd);
6845: my $krbservice = "krbtgt/".$contentpwd."\@".$contentpwd;
6846: my $krbserver = &Authen::Krb5::parse_name($krbservice);
6847: my $credentials= &Authen::Krb5::cc_default();
6848: $credentials->initialize(&Authen::Krb5::parse_name($user.'@'
6849: .$contentpwd));
6850: my $krbreturn;
6851: if (exists(&Authen::Krb5::get_init_creds_password)) {
6852: $krbreturn =
6853: &Authen::Krb5::get_init_creds_password($krbclient,$password,
6854: $krbservice);
6855: $validated = (ref($krbreturn) eq 'Authen::Krb5::Creds');
6856: } else {
6857: $krbreturn =
6858: &Authen::Krb5::get_in_tkt_with_password($krbclient,$krbserver,
6859: $password,$credentials);
6860: $validated = ($krbreturn == 1);
6861: }
6862: if (!$validated) {
6863: &logthis('krb5: '.$user.', '.$contentpwd.', '.
6864: &Authen::Krb5::error());
6865: }
6866: }
6867: return $validated;
6868: }
1.220 foxr 6869:
1.84 albertel 6870: sub addline {
6871: my ($fname,$hostid,$ip,$newline)=@_;
6872: my $contents;
6873: my $found=0;
1.355 albertel 6874: my $expr='^'.quotemeta($hostid).':'.quotemeta($ip).':';
1.134 albertel 6875: my $sh;
1.84 albertel 6876: if ($sh=IO::File->new("$fname.subscription")) {
6877: while (my $subline=<$sh>) {
6878: if ($subline !~ /$expr/) {$contents.= $subline;} else {$found=1;}
6879: }
6880: $sh->close();
6881: }
6882: $sh=IO::File->new(">$fname.subscription");
6883: if ($contents) { print $sh $contents; }
6884: if ($newline) { print $sh $newline; }
6885: $sh->close();
6886: return $found;
1.86 www 6887: }
6888:
1.234 foxr 6889: sub get_chat {
1.324 raeburn 6890: my ($cdom,$cname,$udom,$uname,$group)=@_;
1.310 albertel 6891:
1.87 www 6892: my @entries=();
1.324 raeburn 6893: my $namespace = 'nohist_chatroom';
6894: my $namespace_inroom = 'nohist_inchatroom';
1.335 albertel 6895: if ($group ne '') {
1.324 raeburn 6896: $namespace .= '_'.$group;
6897: $namespace_inroom .= '_'.$group;
6898: }
6899: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 6900: &GDBM_READER());
6901: if ($hashref) {
6902: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.311 albertel 6903: &untie_user_hash($hashref);
1.123 www 6904: }
1.124 www 6905: my @participants=();
1.134 albertel 6906: my $cutoff=time-60;
1.324 raeburn 6907: $hashref = &tie_user_hash($cdom, $cname, $namespace_inroom,
1.310 albertel 6908: &GDBM_WRCREAT());
6909: if ($hashref) {
6910: $hashref->{$uname.':'.$udom}=time;
6911: foreach my $user (sort(keys(%$hashref))) {
6912: if ($hashref->{$user}>$cutoff) {
6913: push(@participants, 'active_participant:'.$user);
1.123 www 6914: }
6915: }
1.311 albertel 6916: &untie_user_hash($hashref);
1.86 www 6917: }
1.124 www 6918: return (@participants,@entries);
1.86 www 6919: }
6920:
1.234 foxr 6921: sub chat_add {
1.324 raeburn 6922: my ($cdom,$cname,$newchat,$group)=@_;
1.88 albertel 6923: my @entries=();
1.142 www 6924: my $time=time;
1.324 raeburn 6925: my $namespace = 'nohist_chatroom';
6926: my $logfile = 'chatroom.log';
1.335 albertel 6927: if ($group ne '') {
1.324 raeburn 6928: $namespace .= '_'.$group;
6929: $logfile = 'chatroom_'.$group.'.log';
6930: }
6931: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 6932: &GDBM_WRCREAT());
6933: if ($hashref) {
6934: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.88 albertel 6935: my ($lastid)=($entries[$#entries]=~/^(\w+)\:/);
6936: my ($thentime,$idnum)=split(/\_/,$lastid);
6937: my $newid=$time.'_000000';
6938: if ($thentime==$time) {
6939: $idnum=~s/^0+//;
6940: $idnum++;
6941: $idnum=substr('000000'.$idnum,-6,6);
6942: $newid=$time.'_'.$idnum;
6943: }
1.310 albertel 6944: $hashref->{$newid}=$newchat;
1.88 albertel 6945: my $expired=$time-3600;
1.310 albertel 6946: foreach my $comment (keys(%$hashref)) {
6947: my ($thistime) = ($comment=~/(\d+)\_/);
1.88 albertel 6948: if ($thistime<$expired) {
1.310 albertel 6949: delete $hashref->{$comment};
1.88 albertel 6950: }
6951: }
1.310 albertel 6952: {
6953: my $proname=&propath($cdom,$cname);
1.324 raeburn 6954: if (open(CHATLOG,">>$proname/$logfile")) {
1.310 albertel 6955: print CHATLOG ("$time:".&unescape($newchat)."\n");
6956: }
6957: close(CHATLOG);
1.142 www 6958: }
1.311 albertel 6959: &untie_user_hash($hashref);
1.86 www 6960: }
1.84 albertel 6961: }
6962:
6963: sub unsub {
6964: my ($fname,$clientip)=@_;
6965: my $result;
1.188 foxr 6966: my $unsubs = 0; # Number of successful unsubscribes:
6967:
6968:
6969: # An old way subscriptions were handled was to have a
6970: # subscription marker file:
6971:
6972: Debug("Attempting unlink of $fname.$clientname");
1.161 foxr 6973: if (unlink("$fname.$clientname")) {
1.188 foxr 6974: $unsubs++; # Successful unsub via marker file.
6975: }
6976:
6977: # The more modern way to do it is to have a subscription list
6978: # file:
6979:
1.84 albertel 6980: if (-e "$fname.subscription") {
1.161 foxr 6981: my $found=&addline($fname,$clientname,$clientip,'');
1.188 foxr 6982: if ($found) {
6983: $unsubs++;
6984: }
6985: }
6986:
6987: # If either or both of these mechanisms succeeded in unsubscribing a
6988: # resource we can return ok:
6989:
6990: if($unsubs) {
6991: $result = "ok\n";
1.84 albertel 6992: } else {
1.188 foxr 6993: $result = "not_subscribed\n";
1.84 albertel 6994: }
1.188 foxr 6995:
1.84 albertel 6996: return $result;
6997: }
6998:
1.101 www 6999: sub currentversion {
7000: my $fname=shift;
7001: my $version=-1;
7002: my $ulsdir='';
7003: if ($fname=~/^(.+)\/[^\/]+$/) {
7004: $ulsdir=$1;
7005: }
1.114 albertel 7006: my ($fnamere1,$fnamere2);
7007: # remove version if already specified
1.101 www 7008: $fname=~s/\.\d+\.(\w+(?:\.meta)*)$/\.$1/;
1.114 albertel 7009: # get the bits that go before and after the version number
7010: if ( $fname=~/^(.*\.)(\w+(?:\.meta)*)$/ ) {
7011: $fnamere1=$1;
7012: $fnamere2='.'.$2;
7013: }
1.101 www 7014: if (-e $fname) { $version=1; }
7015: if (-e $ulsdir) {
1.134 albertel 7016: if(-d $ulsdir) {
7017: if (opendir(LSDIR,$ulsdir)) {
7018: my $ulsfn;
7019: while ($ulsfn=readdir(LSDIR)) {
1.101 www 7020: # see if this is a regular file (ignore links produced earlier)
1.134 albertel 7021: my $thisfile=$ulsdir.'/'.$ulsfn;
7022: unless (-l $thisfile) {
1.160 www 7023: if ($thisfile=~/\Q$fnamere1\E(\d+)\Q$fnamere2\E$/) {
1.134 albertel 7024: if ($1>$version) { $version=$1; }
7025: }
7026: }
7027: }
7028: closedir(LSDIR);
7029: $version++;
7030: }
7031: }
7032: }
7033: return $version;
1.101 www 7034: }
7035:
7036: sub thisversion {
7037: my $fname=shift;
7038: my $version=-1;
7039: if ($fname=~/\.(\d+)\.\w+(?:\.meta)*$/) {
7040: $version=$1;
7041: }
7042: return $version;
7043: }
7044:
1.84 albertel 7045: sub subscribe {
7046: my ($userinput,$clientip)=@_;
7047: my $result;
1.293 albertel 7048: my ($cmd,$fname)=split(/:/,$userinput,2);
1.84 albertel 7049: my $ownership=&ishome($fname);
7050: if ($ownership eq 'owner') {
1.101 www 7051: # explitly asking for the current version?
7052: unless (-e $fname) {
7053: my $currentversion=¤tversion($fname);
7054: if (&thisversion($fname)==$currentversion) {
7055: if ($fname=~/^(.+)\.\d+\.(\w+(?:\.meta)*)$/) {
7056: my $root=$1;
7057: my $extension=$2;
7058: symlink($root.'.'.$extension,
7059: $root.'.'.$currentversion.'.'.$extension);
1.102 www 7060: unless ($extension=~/\.meta$/) {
7061: symlink($root.'.'.$extension.'.meta',
7062: $root.'.'.$currentversion.'.'.$extension.'.meta');
7063: }
1.101 www 7064: }
7065: }
7066: }
1.84 albertel 7067: if (-e $fname) {
7068: if (-d $fname) {
7069: $result="directory\n";
7070: } else {
1.161 foxr 7071: if (-e "$fname.$clientname") {&unsub($fname,$clientip);}
1.134 albertel 7072: my $now=time;
1.161 foxr 7073: my $found=&addline($fname,$clientname,$clientip,
7074: "$clientname:$clientip:$now\n");
1.84 albertel 7075: if ($found) { $result="$fname\n"; }
7076: # if they were subscribed to only meta data, delete that
7077: # subscription, when you subscribe to a file you also get
7078: # the metadata
7079: unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); }
7080: $fname=~s/\/home\/httpd\/html\/res/raw/;
1.373 albertel 7081: $fname="http://".&Apache::lonnet::hostname($perlvar{'lonHostID'})."/".$fname;
1.84 albertel 7082: $result="$fname\n";
7083: }
7084: } else {
7085: $result="not_found\n";
7086: }
7087: } else {
7088: $result="rejected\n";
7089: }
7090: return $result;
7091: }
1.287 foxr 7092: # Change the passwd of a unix user. The caller must have
7093: # first verified that the user is a loncapa user.
7094: #
7095: # Parameters:
7096: # user - Unix user name to change.
7097: # pass - New password for the user.
7098: # Returns:
7099: # ok - if success
7100: # other - Some meaningfule error message string.
7101: # NOTE:
7102: # invokes a setuid script to change the passwd.
7103: sub change_unix_password {
7104: my ($user, $pass) = @_;
7105:
7106: &Debug("change_unix_password");
7107: my $execdir=$perlvar{'lonDaemons'};
7108: &Debug("Opening lcpasswd pipeline");
7109: my $pf = IO::File->new("|$execdir/lcpasswd > "
7110: ."$perlvar{'lonDaemons'}"
7111: ."/logs/lcpasswd.log");
7112: print $pf "$user\n$pass\n$pass\n";
7113: close $pf;
7114: my $err = $?;
7115: return ($err < @passwderrors) ? $passwderrors[$err] :
7116: "pwchange_falure - unknown error";
7117:
7118:
7119: }
7120:
1.91 albertel 7121:
7122: sub make_passwd_file {
1.98 foxr 7123: my ($uname, $umode,$npass,$passfilename)=@_;
1.390 raeburn 7124: my $result="ok";
1.91 albertel 7125: if ($umode eq 'krb4' or $umode eq 'krb5') {
7126: {
7127: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7128: if ($pf) {
7129: print $pf "$umode:$npass\n";
7130: } else {
7131: $result = "pass_file_failed_error";
7132: }
1.91 albertel 7133: }
7134: } elsif ($umode eq 'internal') {
7135: my $salt=time;
7136: $salt=substr($salt,6,2);
7137: my $ncpass=crypt($npass,$salt);
7138: {
7139: &Debug("Creating internal auth");
7140: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7141: if($pf) {
7142: print $pf "internal:$ncpass\n";
7143: } else {
7144: $result = "pass_file_failed_error";
7145: }
1.91 albertel 7146: }
7147: } elsif ($umode eq 'localauth') {
7148: {
7149: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7150: if($pf) {
7151: print $pf "localauth:$npass\n";
7152: } else {
7153: $result = "pass_file_failed_error";
7154: }
1.91 albertel 7155: }
7156: } elsif ($umode eq 'unix') {
7157: {
1.186 foxr 7158: #
7159: # Don't allow the creation of privileged accounts!!! that would
7160: # be real bad!!!
7161: #
7162: my $uid = getpwnam($uname);
7163: if((defined $uid) && ($uid == 0)) {
7164: &logthis(">>>Attempted to create privilged account blocked");
7165: return "no_priv_account_error\n";
7166: }
7167:
1.223 foxr 7168: my $execpath ="$perlvar{'lonDaemons'}/"."lcuseradd";
1.224 foxr 7169:
7170: my $lc_error_file = $execdir."/tmp/lcuseradd".$$.".status";
1.91 albertel 7171: {
7172: &Debug("Executing external: ".$execpath);
1.98 foxr 7173: &Debug("user = ".$uname.", Password =". $npass);
1.132 matthew 7174: my $se = IO::File->new("|$execpath > $perlvar{'lonDaemons'}/logs/lcuseradd.log");
1.91 albertel 7175: print $se "$uname\n";
7176: print $se "$npass\n";
7177: print $se "$npass\n";
1.223 foxr 7178: print $se "$lc_error_file\n"; # Status -> unique file.
1.97 foxr 7179: }
1.285 foxr 7180: if (-r $lc_error_file) {
7181: &Debug("Opening error file: $lc_error_file");
7182: my $error = IO::File->new("< $lc_error_file");
7183: my $useraddok = <$error>;
7184: $error->close;
7185: unlink($lc_error_file);
7186:
7187: chomp $useraddok;
7188:
7189: if($useraddok > 0) {
7190: my $error_text = &lcuseraddstrerror($useraddok);
7191: &logthis("Failed lcuseradd: $error_text");
1.390 raeburn 7192: $result = "lcuseradd_failed:$error_text";
1.285 foxr 7193: } else {
7194: my $pf = IO::File->new(">$passfilename");
7195: if($pf) {
7196: print $pf "unix:\n";
7197: } else {
7198: $result = "pass_file_failed_error";
7199: }
7200: }
1.224 foxr 7201: } else {
1.285 foxr 7202: &Debug("Could not locate lcuseradd error: $lc_error_file");
7203: $result="bug_lcuseradd_no_output_file";
1.91 albertel 7204: }
7205: }
7206: } elsif ($umode eq 'none') {
7207: {
1.223 foxr 7208: my $pf = IO::File->new("> $passfilename");
1.261 foxr 7209: if($pf) {
7210: print $pf "none:\n";
7211: } else {
7212: $result = "pass_file_failed_error";
7213: }
1.91 albertel 7214: }
7215: } else {
1.390 raeburn 7216: $result="auth_mode_error";
1.91 albertel 7217: }
7218: return $result;
1.121 albertel 7219: }
7220:
1.265 albertel 7221: sub convert_photo {
7222: my ($start,$dest)=@_;
7223: system("convert $start $dest");
7224: }
7225:
1.121 albertel 7226: sub sethost {
7227: my ($remotereq) = @_;
7228: my (undef,$hostid)=split(/:/,$remotereq);
1.322 albertel 7229: # ignore sethost if we are already correct
7230: if ($hostid eq $currenthostid) {
7231: return 'ok';
7232: }
7233:
1.121 albertel 7234: if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; }
1.368 albertel 7235: if (&Apache::lonnet::get_host_ip($perlvar{'lonHostID'})
7236: eq &Apache::lonnet::get_host_ip($hostid)) {
1.200 matthew 7237: $currenthostid =$hostid;
1.369 albertel 7238: $currentdomainid=&Apache::lonnet::host_domain($hostid);
1.443 www 7239: # &logthis("Setting hostid to $hostid, and domain to $currentdomainid");
1.121 albertel 7240: } else {
7241: &logthis("Requested host id $hostid not an alias of ".
7242: $perlvar{'lonHostID'}." refusing connection");
7243: return 'unable_to_set';
7244: }
7245: return 'ok';
7246: }
7247:
7248: sub version {
7249: my ($userinput)=@_;
7250: $remoteVERSION=(split(/:/,$userinput))[1];
7251: return "version:$VERSION";
1.127 albertel 7252: }
1.178 foxr 7253:
1.447 raeburn 7254: sub get_usersession_config {
7255: my ($dom,$name) = @_;
7256: my ($usersessionconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
7257: if (defined($cached)) {
7258: return $usersessionconf;
7259: } else {
7260: my %domconfig = &Apache::lonnet::get_dom('configuration',['usersessions'],$dom);
7261: if (ref($domconfig{'usersessions'}) eq 'HASH') {
7262: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'usersessions'},3600);
7263: return $domconfig{'usersessions'};
7264: }
7265: }
7266: return;
7267: }
1.200 matthew 7268:
1.61 harris41 7269: # ----------------------------------- POD (plain old documentation, CPAN style)
7270:
7271: =head1 NAME
7272:
7273: lond - "LON Daemon" Server (port "LOND" 5663)
7274:
7275: =head1 SYNOPSIS
7276:
1.74 harris41 7277: Usage: B<lond>
7278:
7279: Should only be run as user=www. This is a command-line script which
7280: is invoked by B<loncron>. There is no expectation that a typical user
7281: will manually start B<lond> from the command-line. (In other words,
7282: DO NOT START B<lond> YOURSELF.)
1.61 harris41 7283:
7284: =head1 DESCRIPTION
7285:
1.74 harris41 7286: There are two characteristics associated with the running of B<lond>,
7287: PROCESS MANAGEMENT (starting, stopping, handling child processes)
7288: and SERVER-SIDE ACTIVITIES (password authentication, user creation,
7289: subscriptions, etc). These are described in two large
7290: sections below.
7291:
7292: B<PROCESS MANAGEMENT>
7293:
1.61 harris41 7294: Preforker - server who forks first. Runs as a daemon. HUPs.
7295: Uses IDEA encryption
7296:
1.74 harris41 7297: B<lond> forks off children processes that correspond to the other servers
7298: in the network. Management of these processes can be done at the
7299: parent process level or the child process level.
7300:
7301: B<logs/lond.log> is the location of log messages.
7302:
7303: The process management is now explained in terms of linux shell commands,
7304: subroutines internal to this code, and signal assignments:
7305:
7306: =over 4
7307:
7308: =item *
7309:
7310: PID is stored in B<logs/lond.pid>
7311:
7312: This is the process id number of the parent B<lond> process.
7313:
7314: =item *
7315:
7316: SIGTERM and SIGINT
7317:
7318: Parent signal assignment:
7319: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
7320:
7321: Child signal assignment:
7322: $SIG{INT} = 'DEFAULT'; (and SIGTERM is DEFAULT also)
7323: (The child dies and a SIGALRM is sent to parent, awaking parent from slumber
7324: to restart a new child.)
7325:
7326: Command-line invocations:
7327: B<kill> B<-s> SIGTERM I<PID>
7328: B<kill> B<-s> SIGINT I<PID>
7329:
7330: Subroutine B<HUNTSMAN>:
7331: This is only invoked for the B<lond> parent I<PID>.
7332: This kills all the children, and then the parent.
7333: The B<lonc.pid> file is cleared.
7334:
7335: =item *
7336:
7337: SIGHUP
7338:
7339: Current bug:
7340: This signal can only be processed the first time
7341: on the parent process. Subsequent SIGHUP signals
7342: have no effect.
7343:
7344: Parent signal assignment:
7345: $SIG{HUP} = \&HUPSMAN;
7346:
7347: Child signal assignment:
7348: none (nothing happens)
7349:
7350: Command-line invocations:
7351: B<kill> B<-s> SIGHUP I<PID>
7352:
7353: Subroutine B<HUPSMAN>:
7354: This is only invoked for the B<lond> parent I<PID>,
7355: This kills all the children, and then the parent.
7356: The B<lond.pid> file is cleared.
7357:
7358: =item *
7359:
7360: SIGUSR1
7361:
7362: Parent signal assignment:
7363: $SIG{USR1} = \&USRMAN;
7364:
7365: Child signal assignment:
7366: $SIG{USR1}= \&logstatus;
7367:
7368: Command-line invocations:
7369: B<kill> B<-s> SIGUSR1 I<PID>
7370:
7371: Subroutine B<USRMAN>:
7372: When invoked for the B<lond> parent I<PID>,
7373: SIGUSR1 is sent to all the children, and the status of
7374: each connection is logged.
1.144 foxr 7375:
7376: =item *
7377:
7378: SIGUSR2
7379:
7380: Parent Signal assignment:
7381: $SIG{USR2} = \&UpdateHosts
7382:
7383: Child signal assignment:
7384: NONE
7385:
1.74 harris41 7386:
7387: =item *
7388:
7389: SIGCHLD
7390:
7391: Parent signal assignment:
7392: $SIG{CHLD} = \&REAPER;
7393:
7394: Child signal assignment:
7395: none
7396:
7397: Command-line invocations:
7398: B<kill> B<-s> SIGCHLD I<PID>
7399:
7400: Subroutine B<REAPER>:
7401: This is only invoked for the B<lond> parent I<PID>.
7402: Information pertaining to the child is removed.
7403: The socket port is cleaned up.
7404:
7405: =back
7406:
7407: B<SERVER-SIDE ACTIVITIES>
7408:
7409: Server-side information can be accepted in an encrypted or non-encrypted
7410: method.
7411:
7412: =over 4
7413:
7414: =item ping
7415:
7416: Query a client in the hosts.tab table; "Are you there?"
7417:
7418: =item pong
7419:
7420: Respond to a ping query.
7421:
7422: =item ekey
7423:
7424: Read in encrypted key, make cipher. Respond with a buildkey.
7425:
7426: =item load
7427:
7428: Respond with CPU load based on a computation upon /proc/loadavg.
7429:
7430: =item currentauth
7431:
7432: Reply with current authentication information (only over an
7433: encrypted channel).
7434:
7435: =item auth
7436:
7437: Only over an encrypted channel, reply as to whether a user's
7438: authentication information can be validated.
7439:
7440: =item passwd
7441:
7442: Allow for a password to be set.
7443:
7444: =item makeuser
7445:
7446: Make a user.
7447:
7448: =item passwd
7449:
7450: Allow for authentication mechanism and password to be changed.
7451:
7452: =item home
1.61 harris41 7453:
1.74 harris41 7454: Respond to a question "are you the home for a given user?"
7455:
7456: =item update
7457:
7458: Update contents of a subscribed resource.
7459:
7460: =item unsubscribe
7461:
7462: The server is unsubscribing from a resource.
7463:
7464: =item subscribe
7465:
7466: The server is subscribing to a resource.
7467:
7468: =item log
7469:
7470: Place in B<logs/lond.log>
7471:
7472: =item put
7473:
7474: stores hash in namespace
7475:
1.230 foxr 7476: =item rolesputy
1.74 harris41 7477:
7478: put a role into a user's environment
7479:
7480: =item get
7481:
7482: returns hash with keys from array
7483: reference filled in from namespace
7484:
7485: =item eget
7486:
7487: returns hash with keys from array
7488: reference filled in from namesp (encrypts the return communication)
7489:
7490: =item rolesget
7491:
7492: get a role from a user's environment
7493:
7494: =item del
7495:
7496: deletes keys out of array from namespace
7497:
7498: =item keys
7499:
7500: returns namespace keys
7501:
7502: =item dump
7503:
7504: dumps the complete (or key matching regexp) namespace into a hash
7505:
7506: =item store
7507:
7508: stores hash permanently
7509: for this url; hashref needs to be given and should be a \%hashname; the
7510: remaining args aren't required and if they aren't passed or are '' they will
7511: be derived from the ENV
7512:
7513: =item restore
7514:
7515: returns a hash for a given url
7516:
7517: =item querysend
7518:
7519: Tells client about the lonsql process that has been launched in response
7520: to a sent query.
7521:
7522: =item queryreply
7523:
7524: Accept information from lonsql and make appropriate storage in temporary
7525: file space.
7526:
7527: =item idput
7528:
7529: Defines usernames as corresponding to IDs. (These "IDs" are unique identifiers
7530: for each student, defined perhaps by the institutional Registrar.)
7531:
7532: =item idget
7533:
7534: Returns usernames corresponding to IDs. (These "IDs" are unique identifiers
7535: for each student, defined perhaps by the institutional Registrar.)
7536:
7537: =item tmpput
7538:
7539: Accept and store information in temporary space.
7540:
7541: =item tmpget
7542:
7543: Send along temporarily stored information.
7544:
7545: =item ls
7546:
7547: List part of a user's directory.
7548:
1.135 foxr 7549: =item pushtable
7550:
7551: Pushes a file in /home/httpd/lonTab directory. Currently limited to:
7552: hosts.tab and domain.tab. The old file is copied to *.tab.backup but
7553: must be restored manually in case of a problem with the new table file.
7554: pushtable requires that the request be encrypted and validated via
7555: ValidateManager. The form of the command is:
7556: enc:pushtable tablename <tablecontents> \n
7557: where pushtable, tablename and <tablecontents> will be encrypted, but \n is a
7558: cleartext newline.
7559:
1.74 harris41 7560: =item Hanging up (exit or init)
7561:
7562: What to do when a client tells the server that they (the client)
7563: are leaving the network.
7564:
7565: =item unknown command
7566:
7567: If B<lond> is sent an unknown command (not in the list above),
7568: it replys to the client "unknown_cmd".
1.135 foxr 7569:
1.74 harris41 7570:
7571: =item UNKNOWN CLIENT
7572:
7573: If the anti-spoofing algorithm cannot verify the client,
7574: the client is rejected (with a "refused" message sent
7575: to the client, and the connection is closed.
7576:
7577: =back
1.61 harris41 7578:
7579: =head1 PREREQUISITES
7580:
7581: IO::Socket
7582: IO::File
7583: Apache::File
7584: POSIX
7585: Crypt::IDEA
7586: LWP::UserAgent()
7587: GDBM_File
7588: Authen::Krb4
1.91 albertel 7589: Authen::Krb5
1.61 harris41 7590:
7591: =head1 COREQUISITES
7592:
7593: =head1 OSNAMES
7594:
7595: linux
7596:
7597: =head1 SCRIPT CATEGORIES
7598:
7599: Server/Process
7600:
7601: =cut
1.409 foxr 7602:
7603:
7604: =pod
7605:
7606: =head1 LOG MESSAGES
7607:
7608: The messages below can be emitted in the lond log. This log is located
7609: in ~httpd/perl/logs/lond.log Many log messages have HTML encapsulation
7610: to provide coloring if examined from inside a web page. Some do not.
7611: Where color is used, the colors are; Red for sometihhng to get excited
7612: about and to follow up on. Yellow for something to keep an eye on to
7613: be sure it does not get worse, Green,and Blue for informational items.
7614:
7615: In the discussions below, sometimes reference is made to ~httpd
7616: when describing file locations. There isn't really an httpd
7617: user, however there is an httpd directory that gets installed in the
7618: place that user home directories go. On linux, this is usually
7619: (always?) /home/httpd.
7620:
7621:
7622: Some messages are colorless. These are usually (not always)
7623: Green/Blue color level messages.
7624:
7625: =over 2
7626:
7627: =item (Red) LocalConnection rejecting non local: <ip> ne 127.0.0.1
7628:
7629: A local connection negotiation was attempted by
7630: a host whose IP address was not 127.0.0.1.
7631: The socket is closed and the child will exit.
7632: lond has three ways to establish an encyrption
7633: key with a client:
7634:
7635: =over 2
7636:
7637: =item local
7638:
7639: The key is written and read from a file.
7640: This is only valid for connections from localhost.
7641:
7642: =item insecure
7643:
7644: The key is generated by the server and
7645: transmitted to the client.
7646:
7647: =item ssl (secure)
7648:
7649: An ssl connection is negotiated with the client,
7650: the key is generated by the server and sent to the
7651: client across this ssl connection before the
7652: ssl connectionis terminated and clear text
7653: transmission resumes.
7654:
7655: =back
7656:
7657: =item (Red) LocalConnection: caller is insane! init = <init> and type = <type>
7658:
7659: The client is local but has not sent an initialization
7660: string that is the literal "init:local" The connection
7661: is closed and the child exits.
7662:
7663: =item Red CRITICAL Can't get key file <error>
7664:
7665: SSL key negotiation is being attempted but the call to
7666: lonssl::KeyFile failed. This usually means that the
7667: configuration file is not correctly defining or protecting
7668: the directories/files lonCertificateDirectory or
7669: lonnetPrivateKey
7670: <error> is a string that describes the reason that
7671: the key file could not be located.
7672:
7673: =item (Red) CRITICAL Can't get certificates <error>
7674:
7675: SSL key negotiation failed because we were not able to retrives our certificate
7676: or the CA's certificate in the call to lonssl::CertificateFile
7677: <error> is the textual reason this failed. Usual reasons:
7678:
7679: =over 2
7680:
7681: =item Apache config file for loncapa incorrect:
7682:
7683: one of the variables
7684: lonCertificateDirectory, lonnetCertificateAuthority, or lonnetCertificate
7685: undefined or incorrect
7686:
7687: =item Permission error:
7688:
7689: The directory pointed to by lonCertificateDirectory is not readable by lond
7690:
7691: =item Permission error:
7692:
7693: Files in the directory pointed to by lonCertificateDirectory are not readable by lond.
7694:
7695: =item Installation error:
7696:
7697: Either the certificate authority file or the certificate have not
7698: been installed in lonCertificateDirectory.
7699:
7700: =item (Red) CRITICAL SSL Socket promotion failed: <err>
7701:
7702: The promotion of the connection from plaintext to SSL failed
7703: <err> is the reason for the failure. There are two
7704: system calls involved in the promotion (one of which failed),
7705: a dup to produce
7706: a second fd on the raw socket over which the encrypted data
7707: will flow and IO::SOcket::SSL->new_from_fd which creates
7708: the SSL connection on the duped fd.
7709:
7710: =item (Blue) WARNING client did not respond to challenge
7711:
7712: This occurs on an insecure (non SSL) connection negotiation request.
7713: lond generates some number from the time, the PID and sends it to
7714: the client. The client must respond by echoing this information back.
7715: If the client does not do so, that's a violation of the challenge
7716: protocols and the connection will be failed.
7717:
7718: =item (Red) No manager table. Nobody can manage!!
7719:
7720: lond has the concept of privileged hosts that
7721: can perform remote management function such
7722: as update the hosts.tab. The manager hosts
7723: are described in the
7724: ~httpd/lonTabs/managers.tab file.
7725: this message is logged if this file is missing.
7726:
7727:
7728: =item (Green) Registering manager <dnsname> as <cluster_name> with <ipaddress>
7729:
7730: Reports the successful parse and registration
7731: of a specific manager.
7732:
7733: =item Green existing host <clustername:dnsname>
7734:
7735: The manager host is already defined in the hosts.tab
7736: the information in that table, rather than the info in the
7737: manager table will be used to determine the manager's ip.
7738:
7739: =item (Red) Unable to craete <filename>
7740:
7741: lond has been asked to create new versions of an administrative
7742: file (by a manager). When this is done, the new file is created
7743: in a temp file and then renamed into place so that there are always
7744: usable administrative files, even if the update fails. This failure
7745: message means that the temp file could not be created.
7746: The update is abandoned, and the old file is available for use.
7747:
7748: =item (Green) CopyFile from <oldname> to <newname> failed
7749:
7750: In an update of administrative files, the copy of the existing file to a
7751: backup file failed. The installation of the new file may still succeed,
7752: but there will not be a back up file to rever to (this should probably
7753: be yellow).
7754:
7755: =item (Green) Pushfile: backed up <oldname> to <newname>
7756:
7757: See above, the backup of the old administrative file succeeded.
7758:
7759: =item (Red) Pushfile: Unable to install <filename> <reason>
7760:
7761: The new administrative file could not be installed. In this case,
7762: the old administrative file is still in use.
7763:
7764: =item (Green) Installed new < filename>.
7765:
7766: The new administrative file was successfullly installed.
7767:
7768: =item (Red) Reinitializing lond pid=<pid>
7769:
7770: The lonc child process <pid> will be sent a USR2
7771: signal.
7772:
7773: =item (Red) Reinitializing self
7774:
7775: We've been asked to re-read our administrative files,and
7776: are doing so.
7777:
7778: =item (Yellow) error:Invalid process identifier <ident>
7779:
7780: A reinit command was received, but the target part of the
7781: command was not valid. It must be either
7782: 'lond' or 'lonc' but was <ident>
7783:
7784: =item (Green) isValideditCommand checking: Command = <command> Key = <key> newline = <newline>
7785:
7786: Checking to see if lond has been handed a valid edit
7787: command. It is possible the edit command is not valid
7788: in that case there are no log messages to indicate that.
7789:
7790: =item Result of password change for <username> pwchange_success
7791:
7792: The password for <username> was
7793: successfully changed.
7794:
7795: =item Unable to open <user> passwd to change password
7796:
7797: Could not rewrite the
7798: internal password file for a user
7799:
7800: =item Result of password change for <user> : <result>
7801:
7802: A unix password change for <user> was attempted
7803: and the pipe returned <result>
7804:
7805: =item LWP GET: <message> for <fname> (<remoteurl>)
7806:
7807: The lightweight process fetch for a resource failed
7808: with <message> the local filename that should
7809: have existed/been created was <fname> the
7810: corresponding URI: <remoteurl> This is emitted in several
7811: places.
7812:
7813: =item Unable to move <transname> to <destname>
7814:
7815: From fetch_user_file_handler - the user file was replicated but could not
7816: be mv'd to its final location.
7817:
7818: =item Looking for <domain> <username>
7819:
7820: From user_has_session_handler - This should be a Debug call instead
7821: it indicates lond is about to check whether the specified user has a
7822: session active on the specified domain on the local host.
7823:
7824: =item Client <ip> (<name>) hanging up: <input>
7825:
7826: lond has been asked to exit by its client. The <ip> and <name> identify the
7827: client systemand <input> is the full exit command sent to the server.
7828:
7829: =item Red CRITICAL: ABNORMAL EXIT. child <pid> for server <hostname> died through a crass with this error->[<message>].
7830:
7831: A lond child terminated. NOte that this termination can also occur when the
7832: child receives the QUIT or DIE signals. <pid> is the process id of the child,
7833: <hostname> the host lond is working for, and <message> the reason the child died
7834: to the best of our ability to get it (I would guess that any numeric value
7835: represents and errno value). This is immediately followed by
7836:
7837: =item Famous last words: Catching exception - <log>
7838:
7839: Where log is some recent information about the state of the child.
7840:
7841: =item Red CRITICAL: TIME OUT <pid>
7842:
7843: Some timeout occured for server <pid>. THis is normally a timeout on an LWP
7844: doing an HTTP::GET.
7845:
7846: =item child <pid> died
7847:
7848: The reaper caught a SIGCHILD for the lond child process <pid>
7849: This should be modified to also display the IP of the dying child
7850: $children{$pid}
7851:
7852: =item Unknown child 0 died
7853: A child died but the wait for it returned a pid of zero which really should not
7854: ever happen.
7855:
7856: =item Child <which> - <pid> looks like we missed it's death
7857:
7858: When a sigchild is received, the reaper process checks all children to see if they are
7859: alive. If children are dying quite quickly, the lack of signal queuing can mean
7860: that a signal hearalds the death of more than one child. If so this message indicates
7861: which other one died. <which> is the ip of a dead child
7862:
7863: =item Free socket: <shutdownretval>
7864:
7865: The HUNTSMAN sub was called due to a SIGINT in a child process. The socket is being shutdown.
7866: for whatever reason, <shutdownretval> is printed but in fact shutdown() is not documented
7867: to return anything. This is followed by:
7868:
7869: =item Red CRITICAL: Shutting down
7870:
7871: Just prior to exit.
7872:
7873: =item Free socket: <shutdownretval>
7874:
7875: The HUPSMAN sub was called due to a SIGHUP. all children get killsed, and lond execs itself.
7876: This is followed by:
7877:
7878: =item (Red) CRITICAL: Restarting
7879:
7880: lond is about to exec itself to restart.
7881:
7882: =item (Blue) Updating connections
7883:
7884: (In response to a USR2). All the children (except the one for localhost)
7885: are about to be killed, the hosts tab reread, and Apache reloaded via apachereload.
7886:
7887: =item (Blue) UpdateHosts killing child <pid> for ip <ip>
7888:
7889: Due to USR2 as above.
7890:
7891: =item (Green) keeping child for ip <ip> (pid = <pid>)
7892:
7893: In response to USR2 as above, the child indicated is not being restarted because
7894: it's assumed that we'll always need a child for the localhost.
7895:
7896:
7897: =item Going to check on the children
7898:
7899: Parent is about to check on the health of the child processes.
7900: Note that this is in response to a USR1 sent to the parent lond.
7901: there may be one or more of the next two messages:
7902:
7903: =item <pid> is dead
7904:
7905: A child that we have in our child hash as alive has evidently died.
7906:
7907: =item Child <pid> did not respond
7908:
7909: In the health check the child <pid> did not update/produce a pid_.txt
7910: file when sent it's USR1 signal. That process is killed with a 9 signal, as it's
7911: assumed to be hung in some un-fixable way.
7912:
7913: =item Finished checking children
7914:
7915: Master processs's USR1 processing is cojmplete.
7916:
7917: =item (Red) CRITICAL: ------- Starting ------
7918:
7919: (There are more '-'s on either side). Lond has forked itself off to
7920: form a new session and is about to start actual initialization.
7921:
7922: =item (Green) Attempting to start child (<client>)
7923:
7924: Started a new child process for <client>. Client is IO::Socket object
7925: connected to the child. This was as a result of a TCP/IP connection from a client.
7926:
7927: =item Unable to determine who caller was, getpeername returned nothing
7928:
7929: In child process initialization. either getpeername returned undef or
7930: a zero sized object was returned. Processing continues, but in my opinion,
7931: this should be cause for the child to exit.
7932:
7933: =item Unable to determine clientip
7934:
7935: In child process initialization. The peer address from getpeername was not defined.
7936: The client address is stored as "Unavailable" and processing continues.
7937:
7938: =item (Yellow) INFO: Connection <ip> <name> connection type = <type>
7939:
7940: In child initialization. A good connectionw as received from <ip>.
7941:
7942: =over 2
7943:
7944: =item <name>
7945:
7946: is the name of the client from hosts.tab.
7947:
7948: =item <type>
7949:
7950: Is the connection type which is either
7951:
7952: =over 2
7953:
7954: =item manager
7955:
7956: The connection is from a manager node, not in hosts.tab
7957:
7958: =item client
7959:
7960: the connection is from a non-manager in the hosts.tab
7961:
7962: =item both
7963:
7964: The connection is from a manager in the hosts.tab.
7965:
7966: =back
7967:
7968: =back
7969:
7970: =item (Blue) Certificates not installed -- trying insecure auth
7971:
7972: One of the certificate file, key file or
7973: certificate authority file could not be found for a client attempting
7974: SSL connection intiation. COnnection will be attemptied in in-secure mode.
7975: (this would be a system with an up to date lond that has not gotten a
7976: certificate from us).
7977:
7978: =item (Green) Successful local authentication
7979:
7980: A local connection successfully negotiated the encryption key.
7981: In this case the IDEA key is in a file (that is hopefully well protected).
7982:
7983: =item (Green) Successful ssl authentication with <client>
7984:
7985: The client (<client> is the peer's name in hosts.tab), has successfully
7986: negotiated an SSL connection with this child process.
7987:
7988: =item (Green) Successful insecure authentication with <client>
7989:
7990:
7991: The client has successfully negotiated an insecure connection withthe child process.
7992:
7993: =item (Yellow) Attempted insecure connection disallowed
7994:
7995: The client attempted and failed to successfully negotiate a successful insecure
7996: connection. This can happen either because the variable londAllowInsecure is false
7997: or undefined, or becuse the child did not successfully echo back the challenge
7998: string.
7999:
8000:
8001: =back
8002:
1.441 raeburn 8003: =back
8004:
1.409 foxr 8005:
8006: =cut
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