Annotation of loncom/lond, revision 1.452
1.1 albertel 1: #!/usr/bin/perl
2: # The LearningOnline Network
3: # lond "LON Daemon" Server (port "LOND" 5663)
1.60 www 4: #
1.452 ! raeburn 5: # $Id: lond,v 1.451 2010/08/17 20:06:25 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:
1.452 ! raeburn 61: my $VERSION='$Revision: 1.451 $'; #' 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);
1.452 ! raeburn 1792: my @intdoms;
! 1793: my $internet_names = &Apache::lonnet::get_internet_names($clientname);
! 1794: if (ref($internet_names) eq 'ARRAY') {
! 1795: @intdoms = @{$internet_names};
! 1796: }
1.448 raeburn 1797: unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
1.447 raeburn 1798: my ($remote,$hosted);
1799: my $remotesession = &get_usersession_config($udom,'remotesession');
1800: if (ref($remotesession) eq 'HASH') {
1801: $remote = $remotesession->{'remote'}
1802: }
1.448 raeburn 1803: my $hostedsession = &get_usersession_config($clienthomedom,'hostedsession');
1.447 raeburn 1804: if (ref($hostedsession) eq 'HASH') {
1805: $hosted = $hostedsession->{'hosted'};
1806: }
1.449 raeburn 1807: my $loncaparev = $clientversion;
1808: if ($loncaparev eq '') {
1809: $loncaparev = $Apache::lonnet::loncaparevs{$clientname};
1810: }
1.448 raeburn 1811: $canhost = &Apache::lonnet::can_host_session($udom,$clientname,
1.449 raeburn 1812: $loncaparev,
1.447 raeburn 1813: $remote,$hosted);
1814: }
1815: }
1816: if ($canhost) {
1817: &Reply( $client, "authorized\n", $userinput);
1818: } else {
1819: &Reply( $client, "not_allowed_to_host\n", $userinput);
1820: }
1.220 foxr 1821: #
1822: # Bad credentials: Failed to authorize
1823: #
1824: } else {
1825: &Failure( $client, "non_authorized\n", $userinput);
1826: }
1827:
1828: return 1;
1829: }
1.263 albertel 1830: ®ister_handler("auth", \&authenticate_handler, 1, 1, 0);
1.214 foxr 1831:
1.222 foxr 1832: #
1833: # Change a user's password. Note that this function is complicated by
1834: # the fact that a user may be authenticated in more than one way:
1835: # At present, we are not able to change the password for all types of
1836: # authentication methods. Only for:
1837: # unix - unix password or shadow passoword style authentication.
1838: # local - Locally written authentication mechanism.
1839: # For now, kerb4 and kerb5 password changes are not supported and result
1840: # in an error.
1841: # FUTURE WORK:
1842: # Support kerberos passwd changes?
1843: # Parameters:
1844: # $cmd - The command that got us here.
1845: # $tail - Tail of the command (remaining parameters).
1846: # $client - File descriptor connected to client.
1847: # Returns
1848: # 0 - Requested to exit, caller should shut down.
1849: # 1 - Continue processing.
1850: # Implicit inputs:
1851: # The authentication systems describe above have their own forms of implicit
1852: # input into the authentication process that are described above.
1853: sub change_password_handler {
1854: my ($cmd, $tail, $client) = @_;
1855:
1856: my $userinput = $cmd.":".$tail; # Reconstruct client's string.
1857:
1858: #
1859: # udom - user's domain.
1860: # uname - Username.
1861: # upass - Current password.
1862: # npass - New password.
1.346 raeburn 1863: # context - Context in which this was called
1864: # (preferences or reset_by_email).
1.428 raeburn 1865: # lonhost - HostID of server where request originated
1.222 foxr 1866:
1.428 raeburn 1867: my ($udom,$uname,$upass,$npass,$context,$lonhost)=split(/:/,$tail);
1.222 foxr 1868:
1869: $upass=&unescape($upass);
1870: $npass=&unescape($npass);
1871: &Debug("Trying to change password for $uname");
1872:
1873: # First require that the user can be authenticated with their
1.346 raeburn 1874: # old password unless context was 'reset_by_email':
1875:
1.428 raeburn 1876: my ($validated,$failure);
1.346 raeburn 1877: if ($context eq 'reset_by_email') {
1.428 raeburn 1878: if ($lonhost eq '') {
1879: $failure = 'invalid_client';
1880: } else {
1881: $validated = 1;
1882: }
1.346 raeburn 1883: } else {
1884: $validated = &validate_user($udom, $uname, $upass);
1885: }
1.222 foxr 1886: if($validated) {
1887: my $realpasswd = &get_auth_type($udom, $uname); # Defined since authd.
1888:
1889: my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
1890: if ($howpwd eq 'internal') {
1891: &Debug("internal auth");
1892: my $salt=time;
1893: $salt=substr($salt,6,2);
1894: my $ncpass=crypt($npass,$salt);
1895: if(&rewrite_password_file($udom, $uname, "internal:$ncpass")) {
1.428 raeburn 1896: my $msg="Result of password change for $uname: pwchange_success";
1897: if ($lonhost) {
1898: $msg .= " - request originated from: $lonhost";
1899: }
1900: &logthis($msg);
1.222 foxr 1901: &Reply($client, "ok\n", $userinput);
1902: } else {
1903: &logthis("Unable to open $uname passwd "
1904: ."to change password");
1905: &Failure( $client, "non_authorized\n",$userinput);
1906: }
1.346 raeburn 1907: } elsif ($howpwd eq 'unix' && $context ne 'reset_by_email') {
1.287 foxr 1908: my $result = &change_unix_password($uname, $npass);
1.222 foxr 1909: &logthis("Result of password change for $uname: ".
1.287 foxr 1910: $result);
1.387 albertel 1911: &Reply($client, \$result, $userinput);
1.222 foxr 1912: } else {
1913: # this just means that the current password mode is not
1914: # one we know how to change (e.g the kerberos auth modes or
1915: # locally written auth handler).
1916: #
1917: &Failure( $client, "auth_mode_error\n", $userinput);
1918: }
1919:
1.224 foxr 1920: } else {
1.428 raeburn 1921: if ($failure eq '') {
1922: $failure = 'non_authorized';
1923: }
1924: &Failure( $client, "$failure\n", $userinput);
1.222 foxr 1925: }
1926:
1927: return 1;
1928: }
1.263 albertel 1929: ®ister_handler("passwd", \&change_password_handler, 1, 1, 0);
1.222 foxr 1930:
1.225 foxr 1931: #
1932: # Create a new user. User in this case means a lon-capa user.
1933: # The user must either already exist in some authentication realm
1934: # like kerberos or the /etc/passwd. If not, a user completely local to
1935: # this loncapa system is created.
1936: #
1937: # Parameters:
1938: # $cmd - The command that got us here.
1939: # $tail - Tail of the command (remaining parameters).
1940: # $client - File descriptor connected to client.
1941: # Returns
1942: # 0 - Requested to exit, caller should shut down.
1943: # 1 - Continue processing.
1944: # Implicit inputs:
1945: # The authentication systems describe above have their own forms of implicit
1946: # input into the authentication process that are described above.
1947: sub add_user_handler {
1948:
1949: my ($cmd, $tail, $client) = @_;
1950:
1951:
1952: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
1953: my $userinput = $cmd.":".$tail; # Reconstruct the full request line.
1954:
1955: &Debug("cmd =".$cmd." $udom =".$udom." uname=".$uname);
1956:
1957:
1958: if($udom eq $currentdomainid) { # Reject new users for other domains...
1959:
1960: my $oldumask=umask(0077);
1961: chomp($npass);
1962: $npass=&unescape($npass);
1963: my $passfilename = &password_path($udom, $uname);
1964: &Debug("Password file created will be:".$passfilename);
1965: if (-e $passfilename) {
1966: &Failure( $client, "already_exists\n", $userinput);
1967: } else {
1968: my $fperror='';
1.264 albertel 1969: if (!&mkpath($passfilename)) {
1970: $fperror="error: ".($!+0)." mkdir failed while attempting "
1971: ."makeuser";
1.225 foxr 1972: }
1973: unless ($fperror) {
1974: my $result=&make_passwd_file($uname, $umode,$npass, $passfilename);
1.390 raeburn 1975: &Reply($client,\$result, $userinput); #BUGBUG - could be fail
1.225 foxr 1976: } else {
1.387 albertel 1977: &Failure($client, \$fperror, $userinput);
1.225 foxr 1978: }
1979: }
1980: umask($oldumask);
1981: } else {
1982: &Failure($client, "not_right_domain\n",
1983: $userinput); # Even if we are multihomed.
1984:
1985: }
1986: return 1;
1987:
1988: }
1989: ®ister_handler("makeuser", \&add_user_handler, 1, 1, 0);
1990:
1991: #
1992: # Change the authentication method of a user. Note that this may
1993: # also implicitly change the user's password if, for example, the user is
1994: # joining an existing authentication realm. Known authentication realms at
1995: # this time are:
1996: # internal - Purely internal password file (only loncapa knows this user)
1997: # local - Institutionally written authentication module.
1998: # unix - Unix user (/etc/passwd with or without /etc/shadow).
1999: # kerb4 - kerberos version 4
2000: # kerb5 - kerberos version 5
2001: #
2002: # Parameters:
2003: # $cmd - The command that got us here.
2004: # $tail - Tail of the command (remaining parameters).
2005: # $client - File descriptor connected to client.
2006: # Returns
2007: # 0 - Requested to exit, caller should shut down.
2008: # 1 - Continue processing.
2009: # Implicit inputs:
2010: # The authentication systems describe above have their own forms of implicit
2011: # input into the authentication process that are described above.
1.287 foxr 2012: # NOTE:
2013: # This is also used to change the authentication credential values (e.g. passwd).
2014: #
1.225 foxr 2015: #
2016: sub change_authentication_handler {
2017:
2018: my ($cmd, $tail, $client) = @_;
2019:
2020: my $userinput = "$cmd:$tail"; # Reconstruct user input.
2021:
2022: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2023: &Debug("cmd = ".$cmd." domain= ".$udom."uname =".$uname." umode= ".$umode);
2024: if ($udom ne $currentdomainid) {
2025: &Failure( $client, "not_right_domain\n", $client);
2026: } else {
2027:
2028: chomp($npass);
2029:
2030: $npass=&unescape($npass);
1.261 foxr 2031: my $oldauth = &get_auth_type($udom, $uname); # Get old auth info.
1.225 foxr 2032: my $passfilename = &password_path($udom, $uname);
2033: if ($passfilename) { # Not allowed to create a new user!!
1.287 foxr 2034: # If just changing the unix passwd. need to arrange to run
2035: # passwd since otherwise make_passwd_file will run
2036: # lcuseradd which fails if an account already exists
2037: # (to prevent an unscrupulous LONCAPA admin from stealing
2038: # an existing account by overwriting it as a LonCAPA account).
2039:
2040: if(($oldauth =~/^unix/) && ($umode eq "unix")) {
2041: my $result = &change_unix_password($uname, $npass);
2042: &logthis("Result of password change for $uname: ".$result);
2043: if ($result eq "ok") {
1.390 raeburn 2044: &Reply($client, \$result);
1.288 albertel 2045: } else {
1.387 albertel 2046: &Failure($client, \$result);
1.287 foxr 2047: }
1.288 albertel 2048: } else {
1.287 foxr 2049: my $result=&make_passwd_file($uname, $umode,$npass,$passfilename);
2050: #
2051: # If the current auth mode is internal, and the old auth mode was
2052: # unix, or krb*, and the user is an author for this domain,
2053: # re-run manage_permissions for that role in order to be able
2054: # to take ownership of the construction space back to www:www
2055: #
2056:
2057:
2058: if( (($oldauth =~ /^unix/) && ($umode eq "internal")) ||
2059: (($oldauth =~ /^internal/) && ($umode eq "unix")) ) {
2060: if(&is_author($udom, $uname)) {
2061: &Debug(" Need to manage author permissions...");
2062: &manage_permissions("/$udom/_au", $udom, $uname, "$umode:");
2063: }
1.261 foxr 2064: }
1.387 albertel 2065: &Reply($client, \$result, $userinput);
1.261 foxr 2066: }
2067:
2068:
1.225 foxr 2069: } else {
1.251 foxr 2070: &Failure($client, "non_authorized\n", $userinput); # Fail the user now.
1.225 foxr 2071: }
2072: }
2073: return 1;
2074: }
2075: ®ister_handler("changeuserauth", \&change_authentication_handler, 1,1, 0);
2076:
2077: #
2078: # Determines if this is the home server for a user. The home server
2079: # for a user will have his/her lon-capa passwd file. Therefore all we need
2080: # to do is determine if this file exists.
2081: #
2082: # Parameters:
2083: # $cmd - The command that got us here.
2084: # $tail - Tail of the command (remaining parameters).
2085: # $client - File descriptor connected to client.
2086: # Returns
2087: # 0 - Requested to exit, caller should shut down.
2088: # 1 - Continue processing.
2089: # Implicit inputs:
2090: # The authentication systems describe above have their own forms of implicit
2091: # input into the authentication process that are described above.
2092: #
2093: sub is_home_handler {
2094: my ($cmd, $tail, $client) = @_;
2095:
2096: my $userinput = "$cmd:$tail";
2097:
2098: my ($udom,$uname)=split(/:/,$tail);
2099: chomp($uname);
2100: my $passfile = &password_filename($udom, $uname);
2101: if($passfile) {
2102: &Reply( $client, "found\n", $userinput);
2103: } else {
2104: &Failure($client, "not_found\n", $userinput);
2105: }
2106: return 1;
2107: }
2108: ®ister_handler("home", \&is_home_handler, 0,1,0);
2109:
2110: #
1.434 www 2111: # Process an update request for a resource.
2112: # A resource has been modified that we hold a subscription to.
1.225 foxr 2113: # If the resource is not local, then we must update, or at least invalidate our
2114: # cached copy of the resource.
2115: # Parameters:
2116: # $cmd - The command that got us here.
2117: # $tail - Tail of the command (remaining parameters).
2118: # $client - File descriptor connected to client.
2119: # Returns
2120: # 0 - Requested to exit, caller should shut down.
2121: # 1 - Continue processing.
2122: # Implicit inputs:
2123: # The authentication systems describe above have their own forms of implicit
2124: # input into the authentication process that are described above.
2125: #
2126: sub update_resource_handler {
2127:
2128: my ($cmd, $tail, $client) = @_;
2129:
2130: my $userinput = "$cmd:$tail";
2131:
2132: my $fname= $tail; # This allows interactive testing
2133:
2134:
2135: my $ownership=ishome($fname);
2136: if ($ownership eq 'not_owner') {
2137: if (-e $fname) {
1.434 www 2138: # Delete preview file, if exists
2139: unlink("$fname.tmp");
2140: # Get usage stats
1.225 foxr 2141: my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
2142: $atime,$mtime,$ctime,$blksize,$blocks)=stat($fname);
2143: my $now=time;
2144: my $since=$now-$atime;
1.434 www 2145: # If the file has not been used within lonExpire seconds,
2146: # unsubscribe from it and delete local copy
1.225 foxr 2147: if ($since>$perlvar{'lonExpire'}) {
1.365 albertel 2148: my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
1.308 albertel 2149: &devalidate_meta_cache($fname);
1.225 foxr 2150: unlink("$fname");
1.334 albertel 2151: unlink("$fname.meta");
1.225 foxr 2152: } else {
1.434 www 2153: # Yes, this is in active use. Get a fresh copy. Since it might be in
2154: # very active use and huge (like a movie), copy it to "in.transfer" filename first.
1.225 foxr 2155: my $transname="$fname.in.transfer";
1.365 albertel 2156: my $remoteurl=&Apache::lonnet::reply("sub:$fname","$clientname");
1.225 foxr 2157: my $response;
2158: alarm(120);
2159: {
2160: my $ua=new LWP::UserAgent;
2161: my $request=new HTTP::Request('GET',"$remoteurl");
2162: $response=$ua->request($request,$transname);
2163: }
2164: alarm(0);
2165: if ($response->is_error()) {
2166: unlink($transname);
2167: my $message=$response->status_line;
2168: &logthis("LWP GET: $message for $fname ($remoteurl)");
2169: } else {
2170: if ($remoteurl!~/\.meta$/) {
2171: alarm(120);
2172: {
2173: my $ua=new LWP::UserAgent;
2174: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2175: my $mresponse=$ua->request($mrequest,$fname.'.meta');
2176: if ($mresponse->is_error()) {
2177: unlink($fname.'.meta');
2178: }
2179: }
2180: alarm(0);
2181: }
1.434 www 2182: # we successfully transfered, copy file over to real name
1.225 foxr 2183: rename($transname,$fname);
1.308 albertel 2184: &devalidate_meta_cache($fname);
1.225 foxr 2185: }
2186: }
2187: &Reply( $client, "ok\n", $userinput);
2188: } else {
2189: &Failure($client, "not_found\n", $userinput);
2190: }
2191: } else {
2192: &Failure($client, "rejected\n", $userinput);
2193: }
2194: return 1;
2195: }
2196: ®ister_handler("update", \&update_resource_handler, 0 ,1, 0);
2197:
1.308 albertel 2198: sub devalidate_meta_cache {
2199: my ($url) = @_;
2200: use Cache::Memcached;
2201: my $memcache = new Cache::Memcached({'servers'=>['127.0.0.1:11211']});
1.365 albertel 2202: $url = &Apache::lonnet::declutter($url);
1.308 albertel 2203: $url =~ s-\.meta$--;
2204: my $id = &escape('meta:'.$url);
2205: $memcache->delete($id);
2206: }
2207:
1.225 foxr 2208: #
1.226 foxr 2209: # Fetch a user file from a remote server to the user's home directory
2210: # userfiles subdir.
1.225 foxr 2211: # Parameters:
2212: # $cmd - The command that got us here.
2213: # $tail - Tail of the command (remaining parameters).
2214: # $client - File descriptor connected to client.
2215: # Returns
2216: # 0 - Requested to exit, caller should shut down.
2217: # 1 - Continue processing.
2218: #
2219: sub fetch_user_file_handler {
2220:
2221: my ($cmd, $tail, $client) = @_;
2222:
2223: my $userinput = "$cmd:$tail";
2224: my $fname = $tail;
1.232 foxr 2225: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
1.225 foxr 2226: my $udir=&propath($udom,$uname).'/userfiles';
2227: unless (-e $udir) {
2228: mkdir($udir,0770);
2229: }
1.232 foxr 2230: Debug("fetch user file for $fname");
1.225 foxr 2231: if (-e $udir) {
2232: $ufile=~s/^[\.\~]+//;
1.232 foxr 2233:
2234: # IF necessary, create the path right down to the file.
2235: # Note that any regular files in the way of this path are
2236: # wiped out to deal with some earlier folly of mine.
2237:
1.267 raeburn 2238: if (!&mkpath($udir.'/'.$ufile)) {
1.264 albertel 2239: &Failure($client, "unable_to_create\n", $userinput);
1.232 foxr 2240: }
2241:
1.225 foxr 2242: my $destname=$udir.'/'.$ufile;
2243: my $transname=$udir.'/'.$ufile.'.in.transit';
2244: my $remoteurl='http://'.$clientip.'/userfiles/'.$fname;
2245: my $response;
1.232 foxr 2246: Debug("Remote URL : $remoteurl Transfername $transname Destname: $destname");
1.225 foxr 2247: alarm(120);
2248: {
2249: my $ua=new LWP::UserAgent;
2250: my $request=new HTTP::Request('GET',"$remoteurl");
2251: $response=$ua->request($request,$transname);
2252: }
2253: alarm(0);
2254: if ($response->is_error()) {
2255: unlink($transname);
2256: my $message=$response->status_line;
2257: &logthis("LWP GET: $message for $fname ($remoteurl)");
2258: &Failure($client, "failed\n", $userinput);
2259: } else {
1.232 foxr 2260: Debug("Renaming $transname to $destname");
1.225 foxr 2261: if (!rename($transname,$destname)) {
2262: &logthis("Unable to move $transname to $destname");
2263: unlink($transname);
2264: &Failure($client, "failed\n", $userinput);
2265: } else {
2266: &Reply($client, "ok\n", $userinput);
2267: }
2268: }
2269: } else {
2270: &Failure($client, "not_home\n", $userinput);
2271: }
2272: return 1;
2273: }
2274: ®ister_handler("fetchuserfile", \&fetch_user_file_handler, 0, 1, 0);
2275:
1.226 foxr 2276: #
2277: # Remove a file from a user's home directory userfiles subdirectory.
2278: # Parameters:
2279: # cmd - the Lond request keyword that got us here.
2280: # tail - the part of the command past the keyword.
2281: # client- File descriptor connected with the client.
2282: #
2283: # Returns:
2284: # 1 - Continue processing.
2285: sub remove_user_file_handler {
2286: my ($cmd, $tail, $client) = @_;
2287:
2288: my ($fname) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2289:
2290: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
2291: if ($ufile =~m|/\.\./|) {
2292: # any files paths with /../ in them refuse
2293: # to deal with
2294: &Failure($client, "refused\n", "$cmd:$tail");
2295: } else {
2296: my $udir = &propath($udom,$uname);
2297: if (-e $udir) {
2298: my $file=$udir.'/userfiles/'.$ufile;
2299: if (-e $file) {
1.253 foxr 2300: #
2301: # If the file is a regular file unlink is fine...
2302: # However it's possible the client wants a dir.
2303: # removed, in which case rmdir is more approprate:
2304: #
1.240 banghart 2305: if (-f $file){
1.241 albertel 2306: unlink($file);
2307: } elsif(-d $file) {
2308: rmdir($file);
1.240 banghart 2309: }
1.226 foxr 2310: if (-e $file) {
1.253 foxr 2311: # File is still there after we deleted it ?!?
2312:
1.226 foxr 2313: &Failure($client, "failed\n", "$cmd:$tail");
2314: } else {
2315: &Reply($client, "ok\n", "$cmd:$tail");
2316: }
2317: } else {
2318: &Failure($client, "not_found\n", "$cmd:$tail");
2319: }
2320: } else {
2321: &Failure($client, "not_home\n", "$cmd:$tail");
2322: }
2323: }
2324: return 1;
2325: }
2326: ®ister_handler("removeuserfile", \&remove_user_file_handler, 0,1,0);
2327:
1.236 albertel 2328: #
2329: # make a directory in a user's home directory userfiles subdirectory.
2330: # Parameters:
2331: # cmd - the Lond request keyword that got us here.
2332: # tail - the part of the command past the keyword.
2333: # client- File descriptor connected with the client.
2334: #
2335: # Returns:
2336: # 1 - Continue processing.
2337: sub mkdir_user_file_handler {
2338: my ($cmd, $tail, $client) = @_;
2339:
2340: my ($dir) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2341: $dir=&unescape($dir);
2342: my ($udom,$uname,$ufile) = ($dir =~ m|^([^/]+)/([^/]+)/(.+)$|);
2343: if ($ufile =~m|/\.\./|) {
2344: # any files paths with /../ in them refuse
2345: # to deal with
2346: &Failure($client, "refused\n", "$cmd:$tail");
2347: } else {
2348: my $udir = &propath($udom,$uname);
2349: if (-e $udir) {
1.264 albertel 2350: my $newdir=$udir.'/userfiles/'.$ufile.'/';
2351: if (!&mkpath($newdir)) {
2352: &Failure($client, "failed\n", "$cmd:$tail");
1.236 albertel 2353: }
1.264 albertel 2354: &Reply($client, "ok\n", "$cmd:$tail");
1.236 albertel 2355: } else {
2356: &Failure($client, "not_home\n", "$cmd:$tail");
2357: }
2358: }
2359: return 1;
2360: }
2361: ®ister_handler("mkdiruserfile", \&mkdir_user_file_handler, 0,1,0);
2362:
1.237 albertel 2363: #
2364: # rename a file in a user's home directory userfiles subdirectory.
2365: # Parameters:
2366: # cmd - the Lond request keyword that got us here.
2367: # tail - the part of the command past the keyword.
2368: # client- File descriptor connected with the client.
2369: #
2370: # Returns:
2371: # 1 - Continue processing.
2372: sub rename_user_file_handler {
2373: my ($cmd, $tail, $client) = @_;
2374:
2375: my ($udom,$uname,$old,$new) = split(/:/, $tail);
2376: $old=&unescape($old);
2377: $new=&unescape($new);
2378: if ($new =~m|/\.\./| || $old =~m|/\.\./|) {
2379: # any files paths with /../ in them refuse to deal with
2380: &Failure($client, "refused\n", "$cmd:$tail");
2381: } else {
2382: my $udir = &propath($udom,$uname);
2383: if (-e $udir) {
2384: my $oldfile=$udir.'/userfiles/'.$old;
2385: my $newfile=$udir.'/userfiles/'.$new;
2386: if (-e $newfile) {
2387: &Failure($client, "exists\n", "$cmd:$tail");
2388: } elsif (! -e $oldfile) {
2389: &Failure($client, "not_found\n", "$cmd:$tail");
2390: } else {
2391: if (!rename($oldfile,$newfile)) {
2392: &Failure($client, "failed\n", "$cmd:$tail");
2393: } else {
2394: &Reply($client, "ok\n", "$cmd:$tail");
2395: }
2396: }
2397: } else {
2398: &Failure($client, "not_home\n", "$cmd:$tail");
2399: }
2400: }
2401: return 1;
2402: }
2403: ®ister_handler("renameuserfile", \&rename_user_file_handler, 0,1,0);
2404:
1.227 foxr 2405: #
1.382 albertel 2406: # Checks if the specified user has an active session on the server
2407: # return ok if so, not_found if not
2408: #
2409: # Parameters:
2410: # cmd - The request keyword that dispatched to tus.
2411: # tail - The tail of the request (colon separated parameters).
2412: # client - Filehandle open on the client.
2413: # Return:
2414: # 1.
2415: sub user_has_session_handler {
2416: my ($cmd, $tail, $client) = @_;
2417:
2418: my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail));
2419:
2420: &logthis("Looking for $udom $uname");
2421: opendir(DIR,$perlvar{'lonIDsDir'});
2422: my $filename;
2423: while ($filename=readdir(DIR)) {
2424: last if ($filename=~/^\Q$uname\E_\d+_\Q$udom\E_/);
2425: }
2426: if ($filename) {
2427: &Reply($client, "ok\n", "$cmd:$tail");
2428: } else {
2429: &Failure($client, "not_found\n", "$cmd:$tail");
2430: }
2431: return 1;
2432:
2433: }
2434: ®ister_handler("userhassession", \&user_has_session_handler, 0,1,0);
2435:
2436: #
1.263 albertel 2437: # Authenticate access to a user file by checking that the token the user's
2438: # passed also exists in their session file
1.227 foxr 2439: #
2440: # Parameters:
2441: # cmd - The request keyword that dispatched to tus.
2442: # tail - The tail of the request (colon separated parameters).
2443: # client - Filehandle open on the client.
2444: # Return:
2445: # 1.
2446: sub token_auth_user_file_handler {
2447: my ($cmd, $tail, $client) = @_;
2448:
2449: my ($fname, $session) = split(/:/, $tail);
2450:
2451: chomp($session);
1.393 raeburn 2452: my $reply="non_auth";
1.343 albertel 2453: my $file = $perlvar{'lonIDsDir'}.'/'.$session.'.id';
2454: if (open(ENVIN,"$file")) {
1.332 albertel 2455: flock(ENVIN,LOCK_SH);
1.343 albertel 2456: tie(my %disk_env,'GDBM_File',"$file",&GDBM_READER(),0640);
2457: if (exists($disk_env{"userfile.$fname"})) {
1.393 raeburn 2458: $reply="ok";
1.343 albertel 2459: } else {
2460: foreach my $envname (keys(%disk_env)) {
2461: if ($envname=~ m|^userfile\.\Q$fname\E|) {
1.393 raeburn 2462: $reply="ok";
1.343 albertel 2463: last;
2464: }
2465: }
1.227 foxr 2466: }
1.343 albertel 2467: untie(%disk_env);
1.227 foxr 2468: close(ENVIN);
1.387 albertel 2469: &Reply($client, \$reply, "$cmd:$tail");
1.227 foxr 2470: } else {
2471: &Failure($client, "invalid_token\n", "$cmd:$tail");
2472: }
2473: return 1;
2474:
2475: }
2476: ®ister_handler("tokenauthuserfile", \&token_auth_user_file_handler, 0,1,0);
1.229 foxr 2477:
2478: #
2479: # Unsubscribe from a resource.
2480: #
2481: # Parameters:
2482: # $cmd - The command that got us here.
2483: # $tail - Tail of the command (remaining parameters).
2484: # $client - File descriptor connected to client.
2485: # Returns
2486: # 0 - Requested to exit, caller should shut down.
2487: # 1 - Continue processing.
2488: #
2489: sub unsubscribe_handler {
2490: my ($cmd, $tail, $client) = @_;
2491:
2492: my $userinput= "$cmd:$tail";
2493:
2494: my ($fname) = split(/:/,$tail); # Split in case there's extrs.
2495:
2496: &Debug("Unsubscribing $fname");
2497: if (-e $fname) {
2498: &Debug("Exists");
2499: &Reply($client, &unsub($fname,$clientip), $userinput);
2500: } else {
2501: &Failure($client, "not_found\n", $userinput);
2502: }
2503: return 1;
2504: }
2505: ®ister_handler("unsub", \&unsubscribe_handler, 0, 1, 0);
1.263 albertel 2506:
1.230 foxr 2507: # Subscribe to a resource
2508: #
2509: # Parameters:
2510: # $cmd - The command that got us here.
2511: # $tail - Tail of the command (remaining parameters).
2512: # $client - File descriptor connected to client.
2513: # Returns
2514: # 0 - Requested to exit, caller should shut down.
2515: # 1 - Continue processing.
2516: #
2517: sub subscribe_handler {
2518: my ($cmd, $tail, $client)= @_;
2519:
2520: my $userinput = "$cmd:$tail";
2521:
2522: &Reply( $client, &subscribe($userinput,$clientip), $userinput);
2523:
2524: return 1;
2525: }
2526: ®ister_handler("sub", \&subscribe_handler, 0, 1, 0);
2527:
2528: #
1.379 albertel 2529: # Determine the latest version of a resource (it looks for the highest
2530: # past version and then returns that +1)
1.230 foxr 2531: #
2532: # Parameters:
2533: # $cmd - The command that got us here.
2534: # $tail - Tail of the command (remaining parameters).
1.379 albertel 2535: # (Should consist of an absolute path to a file)
1.230 foxr 2536: # $client - File descriptor connected to client.
2537: # Returns
2538: # 0 - Requested to exit, caller should shut down.
2539: # 1 - Continue processing.
2540: #
2541: sub current_version_handler {
2542: my ($cmd, $tail, $client) = @_;
2543:
2544: my $userinput= "$cmd:$tail";
2545:
2546: my $fname = $tail;
2547: &Reply( $client, ¤tversion($fname)."\n", $userinput);
2548: return 1;
2549:
2550: }
2551: ®ister_handler("currentversion", \¤t_version_handler, 0, 1, 0);
2552:
2553: # Make an entry in a user's activity log.
2554: #
2555: # Parameters:
2556: # $cmd - The command that got us here.
2557: # $tail - Tail of the command (remaining parameters).
2558: # $client - File descriptor connected to client.
2559: # Returns
2560: # 0 - Requested to exit, caller should shut down.
2561: # 1 - Continue processing.
2562: #
2563: sub activity_log_handler {
2564: my ($cmd, $tail, $client) = @_;
2565:
2566:
2567: my $userinput= "$cmd:$tail";
2568:
2569: my ($udom,$uname,$what)=split(/:/,$tail);
2570: chomp($what);
2571: my $proname=&propath($udom,$uname);
2572: my $now=time;
2573: my $hfh;
2574: if ($hfh=IO::File->new(">>$proname/activity.log")) {
2575: print $hfh "$now:$clientname:$what\n";
2576: &Reply( $client, "ok\n", $userinput);
2577: } else {
2578: &Failure($client, "error: ".($!+0)." IO::File->new Failed "
2579: ."while attempting log\n",
2580: $userinput);
2581: }
2582:
2583: return 1;
2584: }
1.263 albertel 2585: ®ister_handler("log", \&activity_log_handler, 0, 1, 0);
1.230 foxr 2586:
2587: #
2588: # Put a namespace entry in a user profile hash.
2589: # My druthers would be for this to be an encrypted interaction too.
2590: # anything that might be an inadvertent covert channel about either
2591: # user authentication or user personal information....
2592: #
2593: # Parameters:
2594: # $cmd - The command that got us here.
2595: # $tail - Tail of the command (remaining parameters).
2596: # $client - File descriptor connected to client.
2597: # Returns
2598: # 0 - Requested to exit, caller should shut down.
2599: # 1 - Continue processing.
2600: #
2601: sub put_user_profile_entry {
2602: my ($cmd, $tail, $client) = @_;
1.229 foxr 2603:
1.230 foxr 2604: my $userinput = "$cmd:$tail";
2605:
1.242 raeburn 2606: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
1.230 foxr 2607: if ($namespace ne 'roles') {
2608: chomp($what);
2609: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2610: &GDBM_WRCREAT(),"P",$what);
2611: if($hashref) {
2612: my @pairs=split(/\&/,$what);
2613: foreach my $pair (@pairs) {
2614: my ($key,$value)=split(/=/,$pair);
2615: $hashref->{$key}=$value;
2616: }
1.311 albertel 2617: if (&untie_user_hash($hashref)) {
1.230 foxr 2618: &Reply( $client, "ok\n", $userinput);
2619: } else {
2620: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
2621: "while attempting put\n",
2622: $userinput);
2623: }
2624: } else {
1.316 albertel 2625: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.230 foxr 2626: "while attempting put\n", $userinput);
2627: }
2628: } else {
2629: &Failure( $client, "refused\n", $userinput);
2630: }
2631:
2632: return 1;
2633: }
2634: ®ister_handler("put", \&put_user_profile_entry, 0, 1, 0);
2635:
1.283 albertel 2636: # Put a piece of new data in hash, returns error if entry already exists
2637: # Parameters:
2638: # $cmd - The command that got us here.
2639: # $tail - Tail of the command (remaining parameters).
2640: # $client - File descriptor connected to client.
2641: # Returns
2642: # 0 - Requested to exit, caller should shut down.
2643: # 1 - Continue processing.
2644: #
2645: sub newput_user_profile_entry {
2646: my ($cmd, $tail, $client) = @_;
2647:
2648: my $userinput = "$cmd:$tail";
2649:
2650: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
2651: if ($namespace eq 'roles') {
2652: &Failure( $client, "refused\n", $userinput);
2653: return 1;
2654: }
2655:
2656: chomp($what);
2657:
2658: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2659: &GDBM_WRCREAT(),"N",$what);
2660: if(!$hashref) {
1.316 albertel 2661: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.283 albertel 2662: "while attempting put\n", $userinput);
2663: return 1;
2664: }
2665:
2666: my @pairs=split(/\&/,$what);
2667: foreach my $pair (@pairs) {
2668: my ($key,$value)=split(/=/,$pair);
2669: if (exists($hashref->{$key})) {
2670: &Failure($client, "key_exists: ".$key."\n",$userinput);
2671: return 1;
2672: }
2673: }
2674:
2675: foreach my $pair (@pairs) {
2676: my ($key,$value)=split(/=/,$pair);
2677: $hashref->{$key}=$value;
2678: }
2679:
1.311 albertel 2680: if (&untie_user_hash($hashref)) {
1.283 albertel 2681: &Reply( $client, "ok\n", $userinput);
2682: } else {
2683: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
2684: "while attempting put\n",
2685: $userinput);
2686: }
2687: return 1;
2688: }
2689: ®ister_handler("newput", \&newput_user_profile_entry, 0, 1, 0);
2690:
1.230 foxr 2691: #
2692: # Increment a profile entry in the user history file.
2693: # The history contains keyword value pairs. In this case,
2694: # The value itself is a pair of numbers. The first, the current value
2695: # the second an increment that this function applies to the current
2696: # value.
2697: #
2698: # Parameters:
2699: # $cmd - The command that got us here.
2700: # $tail - Tail of the command (remaining parameters).
2701: # $client - File descriptor connected to client.
2702: # Returns
2703: # 0 - Requested to exit, caller should shut down.
2704: # 1 - Continue processing.
2705: #
2706: sub increment_user_value_handler {
2707: my ($cmd, $tail, $client) = @_;
2708:
2709: my $userinput = "$cmd:$tail";
2710:
2711: my ($udom,$uname,$namespace,$what) =split(/:/,$tail);
2712: if ($namespace ne 'roles') {
2713: chomp($what);
2714: my $hashref = &tie_user_hash($udom, $uname,
2715: $namespace, &GDBM_WRCREAT(),
2716: "P",$what);
2717: if ($hashref) {
2718: my @pairs=split(/\&/,$what);
2719: foreach my $pair (@pairs) {
2720: my ($key,$value)=split(/=/,$pair);
1.284 raeburn 2721: $value = &unescape($value);
1.230 foxr 2722: # We could check that we have a number...
2723: if (! defined($value) || $value eq '') {
2724: $value = 1;
2725: }
2726: $hashref->{$key}+=$value;
1.284 raeburn 2727: if ($namespace eq 'nohist_resourcetracker') {
2728: if ($hashref->{$key} < 0) {
2729: $hashref->{$key} = 0;
2730: }
2731: }
1.230 foxr 2732: }
1.311 albertel 2733: if (&untie_user_hash($hashref)) {
1.230 foxr 2734: &Reply( $client, "ok\n", $userinput);
2735: } else {
2736: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
2737: "while attempting inc\n", $userinput);
2738: }
2739: } else {
2740: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
2741: "while attempting inc\n", $userinput);
2742: }
2743: } else {
2744: &Failure($client, "refused\n", $userinput);
2745: }
2746:
2747: return 1;
2748: }
2749: ®ister_handler("inc", \&increment_user_value_handler, 0, 1, 0);
2750:
2751: #
2752: # Put a new role for a user. Roles are LonCAPA's packaging of permissions.
2753: # Each 'role' a user has implies a set of permissions. Adding a new role
2754: # for a person grants the permissions packaged with that role
2755: # to that user when the role is selected.
2756: #
2757: # Parameters:
2758: # $cmd - The command string (rolesput).
2759: # $tail - The remainder of the request line. For rolesput this
2760: # consists of a colon separated list that contains:
2761: # The domain and user that is granting the role (logged).
2762: # The domain and user that is getting the role.
2763: # The roles being granted as a set of & separated pairs.
2764: # each pair a key value pair.
2765: # $client - File descriptor connected to the client.
2766: # Returns:
2767: # 0 - If the daemon should exit
2768: # 1 - To continue processing.
2769: #
2770: #
2771: sub roles_put_handler {
2772: my ($cmd, $tail, $client) = @_;
2773:
2774: my $userinput = "$cmd:$tail";
2775:
2776: my ( $exedom, $exeuser, $udom, $uname, $what) = split(/:/,$tail);
2777:
2778:
2779: my $namespace='roles';
2780: chomp($what);
2781: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2782: &GDBM_WRCREAT(), "P",
2783: "$exedom:$exeuser:$what");
2784: #
2785: # Log the attempt to set a role. The {}'s here ensure that the file
2786: # handle is open for the minimal amount of time. Since the flush
2787: # is done on close this improves the chances the log will be an un-
2788: # corrupted ordered thing.
2789: if ($hashref) {
1.261 foxr 2790: my $pass_entry = &get_auth_type($udom, $uname);
2791: my ($auth_type,$pwd) = split(/:/, $pass_entry);
2792: $auth_type = $auth_type.":";
1.230 foxr 2793: my @pairs=split(/\&/,$what);
2794: foreach my $pair (@pairs) {
2795: my ($key,$value)=split(/=/,$pair);
2796: &manage_permissions($key, $udom, $uname,
1.260 foxr 2797: $auth_type);
1.230 foxr 2798: $hashref->{$key}=$value;
2799: }
1.311 albertel 2800: if (&untie_user_hash($hashref)) {
1.230 foxr 2801: &Reply($client, "ok\n", $userinput);
2802: } else {
2803: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
2804: "while attempting rolesput\n", $userinput);
2805: }
2806: } else {
2807: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
2808: "while attempting rolesput\n", $userinput);
2809: }
2810: return 1;
2811: }
2812: ®ister_handler("rolesput", \&roles_put_handler, 1,1,0); # Encoded client only.
2813:
2814: #
1.231 foxr 2815: # Deletes (removes) a role for a user. This is equivalent to removing
2816: # a permissions package associated with the role from the user's profile.
2817: #
2818: # Parameters:
2819: # $cmd - The command (rolesdel)
2820: # $tail - The remainder of the request line. This consists
2821: # of:
2822: # The domain and user requesting the change (logged)
2823: # The domain and user being changed.
2824: # The roles being revoked. These are shipped to us
2825: # as a bunch of & separated role name keywords.
2826: # $client - The file handle open on the client.
2827: # Returns:
2828: # 1 - Continue processing
2829: # 0 - Exit.
2830: #
2831: sub roles_delete_handler {
2832: my ($cmd, $tail, $client) = @_;
2833:
2834: my $userinput = "$cmd:$tail";
2835:
2836: my ($exedom,$exeuser,$udom,$uname,$what)=split(/:/,$tail);
2837: &Debug("cmd = ".$cmd." exedom= ".$exedom."user = ".$exeuser." udom=".$udom.
2838: "what = ".$what);
2839: my $namespace='roles';
2840: chomp($what);
2841: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2842: &GDBM_WRCREAT(), "D",
2843: "$exedom:$exeuser:$what");
2844:
2845: if ($hashref) {
2846: my @rolekeys=split(/\&/,$what);
2847:
2848: foreach my $key (@rolekeys) {
2849: delete $hashref->{$key};
2850: }
1.315 albertel 2851: if (&untie_user_hash($hashref)) {
1.231 foxr 2852: &Reply($client, "ok\n", $userinput);
2853: } else {
2854: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
2855: "while attempting rolesdel\n", $userinput);
2856: }
2857: } else {
2858: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
2859: "while attempting rolesdel\n", $userinput);
2860: }
2861:
2862: return 1;
2863: }
2864: ®ister_handler("rolesdel", \&roles_delete_handler, 1,1, 0); # Encoded client only
2865:
2866: # Unencrypted get from a user's profile database. See
2867: # GetProfileEntryEncrypted for a version that does end-to-end encryption.
2868: # This function retrieves a keyed item from a specific named database in the
2869: # user's directory.
2870: #
2871: # Parameters:
2872: # $cmd - Command request keyword (get).
2873: # $tail - Tail of the command. This is a colon separated list
2874: # consisting of the domain and username that uniquely
2875: # identifies the profile,
2876: # The 'namespace' which selects the gdbm file to
2877: # do the lookup in,
2878: # & separated list of keys to lookup. Note that
2879: # the values are returned as an & separated list too.
2880: # $client - File descriptor open on the client.
2881: # Returns:
2882: # 1 - Continue processing.
2883: # 0 - Exit.
2884: #
2885: sub get_profile_entry {
2886: my ($cmd, $tail, $client) = @_;
2887:
2888: my $userinput= "$cmd:$tail";
2889:
2890: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
2891: chomp($what);
1.255 foxr 2892:
1.390 raeburn 2893:
1.255 foxr 2894: my $replystring = read_profile($udom, $uname, $namespace, $what);
2895: my ($first) = split(/:/,$replystring);
2896: if($first ne "error") {
1.387 albertel 2897: &Reply($client, \$replystring, $userinput);
1.231 foxr 2898: } else {
1.255 foxr 2899: &Failure($client, $replystring." while attempting get\n", $userinput);
1.231 foxr 2900: }
2901: return 1;
1.255 foxr 2902:
2903:
1.231 foxr 2904: }
2905: ®ister_handler("get", \&get_profile_entry, 0,1,0);
2906:
2907: #
2908: # Process the encrypted get request. Note that the request is sent
2909: # in clear, but the reply is encrypted. This is a small covert channel:
2910: # information about the sensitive keys is given to the snooper. Just not
2911: # information about the values of the sensitive key. Hmm if I wanted to
2912: # know these I'd snoop for the egets. Get the profile item names from them
2913: # and then issue a get for them since there's no enforcement of the
2914: # requirement of an encrypted get for particular profile items. If I
2915: # were re-doing this, I'd force the request to be encrypted as well as the
2916: # reply. I'd also just enforce encrypted transactions for all gets since
2917: # that would prevent any covert channel snooping.
2918: #
2919: # Parameters:
2920: # $cmd - Command keyword of request (eget).
2921: # $tail - Tail of the command. See GetProfileEntry
# for more information about this.
2922: # $client - File open on the client.
2923: # Returns:
2924: # 1 - Continue processing
2925: # 0 - server should exit.
2926: sub get_profile_entry_encrypted {
2927: my ($cmd, $tail, $client) = @_;
2928:
2929: my $userinput = "$cmd:$tail";
2930:
1.339 albertel 2931: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
1.231 foxr 2932: chomp($what);
1.255 foxr 2933: my $qresult = read_profile($udom, $uname, $namespace, $what);
2934: my ($first) = split(/:/, $qresult);
2935: if($first ne "error") {
2936:
2937: if ($cipher) {
2938: my $cmdlength=length($qresult);
2939: $qresult.=" ";
2940: my $encqresult='';
2941: for(my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
2942: $encqresult.= unpack("H16",
2943: $cipher->encrypt(substr($qresult,
2944: $encidx,
2945: 8)));
2946: }
2947: &Reply( $client, "enc:$cmdlength:$encqresult\n", $userinput);
2948: } else {
1.231 foxr 2949: &Failure( $client, "error:no_key\n", $userinput);
2950: }
2951: } else {
1.255 foxr 2952: &Failure($client, "$qresult while attempting eget\n", $userinput);
2953:
1.231 foxr 2954: }
2955:
2956: return 1;
2957: }
1.255 foxr 2958: ®ister_handler("eget", \&get_profile_entry_encrypted, 0, 1, 0);
1.263 albertel 2959:
1.231 foxr 2960: #
2961: # Deletes a key in a user profile database.
2962: #
2963: # Parameters:
2964: # $cmd - Command keyword (del).
2965: # $tail - Command tail. IN this case a colon
2966: # separated list containing:
2967: # The domain and user that identifies uniquely
2968: # the identity of the user.
2969: # The profile namespace (name of the profile
2970: # database file).
2971: # & separated list of keywords to delete.
2972: # $client - File open on client socket.
2973: # Returns:
2974: # 1 - Continue processing
2975: # 0 - Exit server.
2976: #
2977: #
2978: sub delete_profile_entry {
2979: my ($cmd, $tail, $client) = @_;
2980:
2981: my $userinput = "cmd:$tail";
2982:
2983: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
2984: chomp($what);
2985: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2986: &GDBM_WRCREAT(),
2987: "D",$what);
2988: if ($hashref) {
2989: my @keys=split(/\&/,$what);
2990: foreach my $key (@keys) {
2991: delete($hashref->{$key});
2992: }
1.315 albertel 2993: if (&untie_user_hash($hashref)) {
1.231 foxr 2994: &Reply($client, "ok\n", $userinput);
2995: } else {
2996: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
2997: "while attempting del\n", $userinput);
2998: }
2999: } else {
3000: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3001: "while attempting del\n", $userinput);
3002: }
3003: return 1;
3004: }
3005: ®ister_handler("del", \&delete_profile_entry, 0, 1, 0);
1.263 albertel 3006:
1.231 foxr 3007: #
3008: # List the set of keys that are defined in a profile database file.
3009: # A successful reply from this will contain an & separated list of
3010: # the keys.
3011: # Parameters:
3012: # $cmd - Command request (keys).
3013: # $tail - Remainder of the request, a colon separated
3014: # list containing domain/user that identifies the
3015: # user being queried, and the database namespace
3016: # (database filename essentially).
3017: # $client - File open on the client.
3018: # Returns:
3019: # 1 - Continue processing.
3020: # 0 - Exit the server.
3021: #
3022: sub get_profile_keys {
3023: my ($cmd, $tail, $client) = @_;
3024:
3025: my $userinput = "$cmd:$tail";
3026:
3027: my ($udom,$uname,$namespace)=split(/:/,$tail);
3028: my $qresult='';
3029: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3030: &GDBM_READER());
3031: if ($hashref) {
3032: foreach my $key (keys %$hashref) {
3033: $qresult.="$key&";
3034: }
1.315 albertel 3035: if (&untie_user_hash($hashref)) {
1.231 foxr 3036: $qresult=~s/\&$//;
1.387 albertel 3037: &Reply($client, \$qresult, $userinput);
1.231 foxr 3038: } else {
3039: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3040: "while attempting keys\n", $userinput);
3041: }
3042: } else {
3043: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3044: "while attempting keys\n", $userinput);
3045: }
3046:
3047: return 1;
3048: }
3049: ®ister_handler("keys", \&get_profile_keys, 0, 1, 0);
3050:
3051: #
3052: # Dump the contents of a user profile database.
3053: # Note that this constitutes a very large covert channel too since
3054: # the dump will return sensitive information that is not encrypted.
3055: # The naive security assumption is that the session negotiation ensures
3056: # our client is trusted and I don't believe that's assured at present.
3057: # Sure want badly to go to ssl or tls. Of course if my peer isn't really
3058: # a LonCAPA node they could have negotiated an encryption key too so >sigh<.
3059: #
3060: # Parameters:
3061: # $cmd - The command request keyword (currentdump).
3062: # $tail - Remainder of the request, consisting of a colon
3063: # separated list that has the domain/username and
3064: # the namespace to dump (database file).
3065: # $client - file open on the remote client.
3066: # Returns:
3067: # 1 - Continue processing.
3068: # 0 - Exit the server.
3069: #
3070: sub dump_profile_database {
3071: my ($cmd, $tail, $client) = @_;
3072:
3073: my $userinput = "$cmd:$tail";
3074:
3075: my ($udom,$uname,$namespace) = split(/:/,$tail);
3076: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3077: &GDBM_READER());
3078: if ($hashref) {
3079: # Structure of %data:
3080: # $data{$symb}->{$parameter}=$value;
3081: # $data{$symb}->{'v.'.$parameter}=$version;
3082: # since $parameter will be unescaped, we do not
3083: # have to worry about silly parameter names...
3084:
3085: my $qresult='';
3086: my %data = (); # A hash of anonymous hashes..
3087: while (my ($key,$value) = each(%$hashref)) {
3088: my ($v,$symb,$param) = split(/:/,$key);
3089: next if ($v eq 'version' || $symb eq 'keys');
3090: next if (exists($data{$symb}) &&
3091: exists($data{$symb}->{$param}) &&
3092: $data{$symb}->{'v.'.$param} > $v);
3093: $data{$symb}->{$param}=$value;
3094: $data{$symb}->{'v.'.$param}=$v;
3095: }
1.311 albertel 3096: if (&untie_user_hash($hashref)) {
1.231 foxr 3097: while (my ($symb,$param_hash) = each(%data)) {
3098: while(my ($param,$value) = each (%$param_hash)){
3099: next if ($param =~ /^v\./); # Ignore versions...
3100: #
3101: # Just dump the symb=value pairs separated by &
3102: #
3103: $qresult.=$symb.':'.$param.'='.$value.'&';
3104: }
3105: }
3106: chop($qresult);
1.387 albertel 3107: &Reply($client , \$qresult, $userinput);
1.231 foxr 3108: } else {
3109: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3110: "while attempting currentdump\n", $userinput);
3111: }
3112: } else {
3113: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3114: "while attempting currentdump\n", $userinput);
3115: }
3116:
3117: return 1;
3118: }
3119: ®ister_handler("currentdump", \&dump_profile_database, 0, 1, 0);
3120:
3121: #
3122: # Dump a profile database with an optional regular expression
3123: # to match against the keys. In this dump, no effort is made
3124: # to separate symb from version information. Presumably the
3125: # databases that are dumped by this command are of a different
3126: # structure. Need to look at this and improve the documentation of
3127: # both this and the currentdump handler.
3128: # Parameters:
3129: # $cmd - The command keyword.
3130: # $tail - All of the characters after the $cmd:
3131: # These are expected to be a colon
3132: # separated list containing:
3133: # domain/user - identifying the user.
3134: # namespace - identifying the database.
3135: # regexp - optional regular expression
3136: # that is matched against
3137: # database keywords to do
3138: # selective dumps.
3139: # $client - Channel open on the client.
3140: # Returns:
3141: # 1 - Continue processing.
3142: # Side effects:
3143: # response is written to $client.
3144: #
3145: sub dump_with_regexp {
3146: my ($cmd, $tail, $client) = @_;
3147:
3148:
3149: my $userinput = "$cmd:$tail";
3150:
1.450 raeburn 3151: my ($udom,$uname,$namespace,$regexp,$range,$extra)=split(/:/,$tail);
1.231 foxr 3152: if (defined($regexp)) {
3153: $regexp=&unescape($regexp);
3154: } else {
3155: $regexp='.';
3156: }
1.306 albertel 3157: my ($start,$end);
3158: if (defined($range)) {
3159: if ($range =~/^(\d+)\-(\d+)$/) {
3160: ($start,$end) = ($1,$2);
3161: } elsif ($range =~/^(\d+)$/) {
3162: ($start,$end) = (0,$1);
3163: } else {
3164: undef($range);
3165: }
3166: }
1.231 foxr 3167: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3168: &GDBM_READER());
1.450 raeburn 3169: my $clientcheckrole;
1.231 foxr 3170: if ($hashref) {
3171: my $qresult='';
1.306 albertel 3172: my $count=0;
1.450 raeburn 3173: if ($extra ne '') {
3174: $extra = &Apache::lonnet::thaw_unescape($extra);
3175: $clientcheckrole = $extra->{'clientcheckrole'};
3176: }
3177: my @ids = &Apache::lonnet::current_machine_ids();
1.231 foxr 3178: while (my ($key,$value) = each(%$hashref)) {
1.432 raeburn 3179: if ($namespace eq 'roles') {
1.450 raeburn 3180: if ($key =~ m{^/($LONCAPA::match_domain)/($LONCAPA::match_courseid)_(cc|co|in|ta|ep|ad|st|cr)}) {
1.446 raeburn 3181: my $cdom = $1;
3182: my $cnum = $2;
1.450 raeburn 3183: unless ($clientcheckrole) {
3184: my $home = &Apache::lonnet::homeserver($cnum,$cdom);
3185: my $loncaparev = $clientversion;
3186: if ($loncaparev eq '') {
3187: $loncaparev = $Apache::lonnet::loncaparevs{$clientname};
3188: }
3189: my ($major,$minor);
1.451 raeburn 3190: if ($loncaparev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?/) {
1.450 raeburn 3191: $major = $1;
3192: $minor = $2;
3193: }
3194: if ($key =~ m{^/($LONCAPA::match_domain)/($LONCAPA::match_community)_(co|in|ta|ep|ad|st|cr)}) {
3195: if ($major eq '' && $minor eq '') {
3196: next unless (($home ne 'no_host') && grep(/^\Q$home\E$/,@ids));
3197: }
3198: }
3199: unless ($home eq 'no_host') {
3200: my $courseinfo = &get_courseinfo_hash($cnum,$cdom,$home);
3201: if (ref($courseinfo) eq 'HASH') {
3202: if (exists($courseinfo->{'releaserequired'})) {
3203: my ($reqdmajor,$reqdminor) = split(/\./,$courseinfo->{'releaserequired'});
3204: if ($reqdmajor ne '' && $reqdminor ne '') {
3205: next if (($major eq '' && $minor eq '') ||
3206: ($major < $reqdmajor) ||
3207: (($major == $reqdmajor) && ($minor < $reqdminor)));
3208: }
3209: }
3210: }
3211: }
1.432 raeburn 3212: }
3213: }
3214: }
1.231 foxr 3215: if ($regexp eq '.') {
1.306 albertel 3216: $count++;
3217: if (defined($range) && $count >= $end) { last; }
3218: if (defined($range) && $count < $start) { next; }
1.231 foxr 3219: $qresult.=$key.'='.$value.'&';
3220: } else {
3221: my $unescapeKey = &unescape($key);
3222: if (eval('$unescapeKey=~/$regexp/')) {
1.306 albertel 3223: $count++;
3224: if (defined($range) && $count >= $end) { last; }
3225: if (defined($range) && $count < $start) { next; }
1.231 foxr 3226: $qresult.="$key=$value&";
3227: }
3228: }
3229: }
1.311 albertel 3230: if (&untie_user_hash($hashref)) {
1.231 foxr 3231: chop($qresult);
1.387 albertel 3232: &Reply($client, \$qresult, $userinput);
1.231 foxr 3233: } else {
3234: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3235: "while attempting dump\n", $userinput);
3236: }
3237: } else {
3238: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3239: "while attempting dump\n", $userinput);
3240: }
3241:
3242: return 1;
3243: }
3244: ®ister_handler("dump", \&dump_with_regexp, 0, 1, 0);
3245:
3246: # Store a set of key=value pairs associated with a versioned name.
3247: #
3248: # Parameters:
3249: # $cmd - Request command keyword.
3250: # $tail - Tail of the request. This is a colon
3251: # separated list containing:
3252: # domain/user - User and authentication domain.
3253: # namespace - Name of the database being modified
3254: # rid - Resource keyword to modify.
3255: # what - new value associated with rid.
3256: #
3257: # $client - Socket open on the client.
3258: #
3259: #
3260: # Returns:
3261: # 1 (keep on processing).
3262: # Side-Effects:
3263: # Writes to the client
3264: sub store_handler {
3265: my ($cmd, $tail, $client) = @_;
3266:
3267: my $userinput = "$cmd:$tail";
3268:
3269: my ($udom,$uname,$namespace,$rid,$what) =split(/:/,$tail);
3270: if ($namespace ne 'roles') {
3271:
3272: chomp($what);
3273: my @pairs=split(/\&/,$what);
3274: my $hashref = &tie_user_hash($udom, $uname, $namespace,
1.268 albertel 3275: &GDBM_WRCREAT(), "S",
1.231 foxr 3276: "$rid:$what");
3277: if ($hashref) {
3278: my $now = time;
3279: my @previouskeys=split(/&/,$hashref->{"keys:$rid"});
3280: my $key;
3281: $hashref->{"version:$rid"}++;
3282: my $version=$hashref->{"version:$rid"};
3283: my $allkeys='';
3284: foreach my $pair (@pairs) {
3285: my ($key,$value)=split(/=/,$pair);
3286: $allkeys.=$key.':';
3287: $hashref->{"$version:$rid:$key"}=$value;
3288: }
3289: $hashref->{"$version:$rid:timestamp"}=$now;
3290: $allkeys.='timestamp';
3291: $hashref->{"$version:keys:$rid"}=$allkeys;
1.311 albertel 3292: if (&untie_user_hash($hashref)) {
1.231 foxr 3293: &Reply($client, "ok\n", $userinput);
3294: } else {
3295: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3296: "while attempting store\n", $userinput);
3297: }
3298: } else {
3299: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3300: "while attempting store\n", $userinput);
3301: }
3302: } else {
3303: &Failure($client, "refused\n", $userinput);
3304: }
3305:
3306: return 1;
3307: }
3308: ®ister_handler("store", \&store_handler, 0, 1, 0);
1.263 albertel 3309:
1.323 albertel 3310: # Modify a set of key=value pairs associated with a versioned name.
3311: #
3312: # Parameters:
3313: # $cmd - Request command keyword.
3314: # $tail - Tail of the request. This is a colon
3315: # separated list containing:
3316: # domain/user - User and authentication domain.
3317: # namespace - Name of the database being modified
3318: # rid - Resource keyword to modify.
3319: # v - Version item to modify
3320: # what - new value associated with rid.
3321: #
3322: # $client - Socket open on the client.
3323: #
3324: #
3325: # Returns:
3326: # 1 (keep on processing).
3327: # Side-Effects:
3328: # Writes to the client
3329: sub putstore_handler {
3330: my ($cmd, $tail, $client) = @_;
3331:
3332: my $userinput = "$cmd:$tail";
3333:
3334: my ($udom,$uname,$namespace,$rid,$v,$what) =split(/:/,$tail);
3335: if ($namespace ne 'roles') {
3336:
3337: chomp($what);
3338: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3339: &GDBM_WRCREAT(), "M",
3340: "$rid:$v:$what");
3341: if ($hashref) {
3342: my $now = time;
3343: my %data = &hash_extract($what);
3344: my @allkeys;
3345: while (my($key,$value) = each(%data)) {
3346: push(@allkeys,$key);
3347: $hashref->{"$v:$rid:$key"} = $value;
3348: }
3349: my $allkeys = join(':',@allkeys);
3350: $hashref->{"$v:keys:$rid"}=$allkeys;
3351:
3352: if (&untie_user_hash($hashref)) {
3353: &Reply($client, "ok\n", $userinput);
3354: } else {
3355: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3356: "while attempting store\n", $userinput);
3357: }
3358: } else {
3359: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3360: "while attempting store\n", $userinput);
3361: }
3362: } else {
3363: &Failure($client, "refused\n", $userinput);
3364: }
3365:
3366: return 1;
3367: }
3368: ®ister_handler("putstore", \&putstore_handler, 0, 1, 0);
3369:
3370: sub hash_extract {
3371: my ($str)=@_;
3372: my %hash;
3373: foreach my $pair (split(/\&/,$str)) {
3374: my ($key,$value)=split(/=/,$pair);
3375: $hash{$key}=$value;
3376: }
3377: return (%hash);
3378: }
3379: sub hash_to_str {
3380: my ($hash_ref)=@_;
3381: my $str;
3382: foreach my $key (keys(%$hash_ref)) {
3383: $str.=$key.'='.$hash_ref->{$key}.'&';
3384: }
3385: $str=~s/\&$//;
3386: return $str;
3387: }
3388:
1.231 foxr 3389: #
3390: # Dump out all versions of a resource that has key=value pairs associated
3391: # with it for each version. These resources are built up via the store
3392: # command.
3393: #
3394: # Parameters:
3395: # $cmd - Command keyword.
3396: # $tail - Remainder of the request which consists of:
3397: # domain/user - User and auth. domain.
3398: # namespace - name of resource database.
3399: # rid - Resource id.
3400: # $client - socket open on the client.
3401: #
3402: # Returns:
3403: # 1 indicating the caller should not yet exit.
3404: # Side-effects:
3405: # Writes a reply to the client.
3406: # The reply is a string of the following shape:
3407: # version=current&version:keys=k1:k2...&1:k1=v1&1:k2=v2...
3408: # Where the 1 above represents version 1.
3409: # this continues for all pairs of keys in all versions.
3410: #
3411: #
3412: #
3413: #
3414: sub restore_handler {
3415: my ($cmd, $tail, $client) = @_;
3416:
3417: my $userinput = "$cmd:$tail"; # Only used for logging purposes.
1.351 banghart 3418: my ($udom,$uname,$namespace,$rid) = split(/:/,$tail);
1.352 albertel 3419: $namespace=~s/\//\_/g;
1.350 albertel 3420: $namespace = &LONCAPA::clean_username($namespace);
1.349 albertel 3421:
1.231 foxr 3422: chomp($rid);
3423: my $qresult='';
1.309 albertel 3424: my $hashref = &tie_user_hash($udom, $uname, $namespace, &GDBM_READER());
3425: if ($hashref) {
3426: my $version=$hashref->{"version:$rid"};
1.231 foxr 3427: $qresult.="version=$version&";
3428: my $scope;
3429: for ($scope=1;$scope<=$version;$scope++) {
1.309 albertel 3430: my $vkeys=$hashref->{"$scope:keys:$rid"};
1.231 foxr 3431: my @keys=split(/:/,$vkeys);
3432: my $key;
3433: $qresult.="$scope:keys=$vkeys&";
3434: foreach $key (@keys) {
1.309 albertel 3435: $qresult.="$scope:$key=".$hashref->{"$scope:$rid:$key"}."&";
1.231 foxr 3436: }
3437: }
1.311 albertel 3438: if (&untie_user_hash($hashref)) {
1.231 foxr 3439: $qresult=~s/\&$//;
1.387 albertel 3440: &Reply( $client, \$qresult, $userinput);
1.231 foxr 3441: } else {
3442: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3443: "while attempting restore\n", $userinput);
3444: }
3445: } else {
3446: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3447: "while attempting restore\n", $userinput);
3448: }
3449:
3450: return 1;
3451:
3452:
3453: }
3454: ®ister_handler("restore", \&restore_handler, 0,1,0);
1.234 foxr 3455:
3456: #
1.324 raeburn 3457: # Add a chat message to a synchronous discussion board.
1.234 foxr 3458: #
3459: # Parameters:
3460: # $cmd - Request keyword.
3461: # $tail - Tail of the command. A colon separated list
3462: # containing:
3463: # cdom - Domain on which the chat board lives
1.324 raeburn 3464: # cnum - Course containing the chat board.
3465: # newpost - Body of the posting.
3466: # group - Optional group, if chat board is only
3467: # accessible in a group within the course
1.234 foxr 3468: # $client - Socket open on the client.
3469: # Returns:
3470: # 1 - Indicating caller should keep on processing.
3471: #
3472: # Side-effects:
3473: # writes a reply to the client.
3474: #
3475: #
3476: sub send_chat_handler {
3477: my ($cmd, $tail, $client) = @_;
3478:
3479:
3480: my $userinput = "$cmd:$tail";
3481:
1.324 raeburn 3482: my ($cdom,$cnum,$newpost,$group)=split(/\:/,$tail);
3483: &chat_add($cdom,$cnum,$newpost,$group);
1.234 foxr 3484: &Reply($client, "ok\n", $userinput);
3485:
3486: return 1;
3487: }
3488: ®ister_handler("chatsend", \&send_chat_handler, 0, 1, 0);
1.263 albertel 3489:
1.234 foxr 3490: #
1.324 raeburn 3491: # Retrieve the set of chat messages from a discussion board.
1.234 foxr 3492: #
3493: # Parameters:
3494: # $cmd - Command keyword that initiated the request.
3495: # $tail - Remainder of the request after the command
3496: # keyword. In this case a colon separated list of
3497: # chat domain - Which discussion board.
3498: # chat id - Discussion thread(?)
3499: # domain/user - Authentication domain and username
3500: # of the requesting person.
1.324 raeburn 3501: # group - Optional course group containing
3502: # the board.
1.234 foxr 3503: # $client - Socket open on the client program.
3504: # Returns:
3505: # 1 - continue processing
3506: # Side effects:
3507: # Response is written to the client.
3508: #
3509: sub retrieve_chat_handler {
3510: my ($cmd, $tail, $client) = @_;
3511:
3512:
3513: my $userinput = "$cmd:$tail";
3514:
1.324 raeburn 3515: my ($cdom,$cnum,$udom,$uname,$group)=split(/\:/,$tail);
1.234 foxr 3516: my $reply='';
1.324 raeburn 3517: foreach (&get_chat($cdom,$cnum,$udom,$uname,$group)) {
1.234 foxr 3518: $reply.=&escape($_).':';
3519: }
3520: $reply=~s/\:$//;
1.387 albertel 3521: &Reply($client, \$reply, $userinput);
1.234 foxr 3522:
3523:
3524: return 1;
3525: }
3526: ®ister_handler("chatretr", \&retrieve_chat_handler, 0, 1, 0);
3527:
3528: #
3529: # Initiate a query of an sql database. SQL query repsonses get put in
3530: # a file for later retrieval. This prevents sql query results from
3531: # bottlenecking the system. Note that with loncnew, perhaps this is
3532: # less of an issue since multiple outstanding requests can be concurrently
3533: # serviced.
3534: #
3535: # Parameters:
3536: # $cmd - COmmand keyword that initiated the request.
3537: # $tail - Remainder of the command after the keyword.
3538: # For this function, this consists of a query and
3539: # 3 arguments that are self-documentingly labelled
3540: # in the original arg1, arg2, arg3.
3541: # $client - Socket open on the client.
3542: # Return:
3543: # 1 - Indicating processing should continue.
3544: # Side-effects:
3545: # a reply is written to $client.
3546: #
3547: sub send_query_handler {
3548: my ($cmd, $tail, $client) = @_;
3549:
3550:
3551: my $userinput = "$cmd:$tail";
3552:
3553: my ($query,$arg1,$arg2,$arg3)=split(/\:/,$tail);
3554: $query=~s/\n*$//g;
3555: &Reply($client, "". &sql_reply("$clientname\&$query".
3556: "\&$arg1"."\&$arg2"."\&$arg3")."\n",
3557: $userinput);
3558:
3559: return 1;
3560: }
3561: ®ister_handler("querysend", \&send_query_handler, 0, 1, 0);
3562:
3563: #
3564: # Add a reply to an sql query. SQL queries are done asyncrhonously.
3565: # The query is submitted via a "querysend" transaction.
3566: # There it is passed on to the lonsql daemon, queued and issued to
3567: # mysql.
3568: # This transaction is invoked when the sql transaction is complete
3569: # it stores the query results in flie and indicates query completion.
3570: # presumably local software then fetches this response... I'm guessing
3571: # the sequence is: lonc does a querysend, we ask lonsql to do it.
3572: # lonsql on completion of the query interacts with the lond of our
3573: # client to do a query reply storing two files:
3574: # - id - The results of the query.
3575: # - id.end - Indicating the transaction completed.
3576: # NOTE: id is a unique id assigned to the query and querysend time.
3577: # Parameters:
3578: # $cmd - Command keyword that initiated this request.
3579: # $tail - Remainder of the tail. In this case that's a colon
3580: # separated list containing the query Id and the
3581: # results of the query.
3582: # $client - Socket open on the client.
3583: # Return:
3584: # 1 - Indicating that we should continue processing.
3585: # Side effects:
3586: # ok written to the client.
3587: #
3588: sub reply_query_handler {
3589: my ($cmd, $tail, $client) = @_;
3590:
3591:
3592: my $userinput = "$cmd:$tail";
3593:
1.339 albertel 3594: my ($id,$reply)=split(/:/,$tail);
1.234 foxr 3595: my $store;
3596: my $execdir=$perlvar{'lonDaemons'};
3597: if ($store=IO::File->new(">$execdir/tmp/$id")) {
3598: $reply=~s/\&/\n/g;
3599: print $store $reply;
3600: close $store;
3601: my $store2=IO::File->new(">$execdir/tmp/$id.end");
3602: print $store2 "done\n";
3603: close $store2;
3604: &Reply($client, "ok\n", $userinput);
3605: } else {
3606: &Failure($client, "error: ".($!+0)
3607: ." IO::File->new Failed ".
3608: "while attempting queryreply\n", $userinput);
3609: }
3610:
3611:
3612: return 1;
3613: }
3614: ®ister_handler("queryreply", \&reply_query_handler, 0, 1, 0);
3615:
3616: #
3617: # Process the courseidput request. Not quite sure what this means
3618: # at the system level sense. It appears a gdbm file in the
3619: # /home/httpd/lonUsers/$domain/nohist_courseids is tied and
3620: # a set of entries made in that database.
3621: #
3622: # Parameters:
3623: # $cmd - The command keyword that initiated this request.
3624: # $tail - Tail of the command. In this case consists of a colon
3625: # separated list contaning the domain to apply this to and
3626: # an ampersand separated list of keyword=value pairs.
1.272 raeburn 3627: # Each value is a colon separated list that includes:
3628: # description, institutional code and course owner.
3629: # For backward compatibility with versions included
3630: # in LON-CAPA 1.1.X (and earlier) and 1.2.X, institutional
3631: # code and/or course owner are preserved from the existing
3632: # record when writing a new record in response to 1.1 or
3633: # 1.2 implementations of lonnet::flushcourselogs().
3634: #
1.234 foxr 3635: # $client - Socket open on the client.
3636: # Returns:
3637: # 1 - indicating that processing should continue
3638: #
3639: # Side effects:
3640: # reply is written to the client.
3641: #
3642: sub put_course_id_handler {
3643: my ($cmd, $tail, $client) = @_;
3644:
3645:
3646: my $userinput = "$cmd:$tail";
3647:
1.266 raeburn 3648: my ($udom, $what) = split(/:/, $tail,2);
1.234 foxr 3649: chomp($what);
3650: my $now=time;
3651: my @pairs=split(/\&/,$what);
3652:
3653: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
3654: if ($hashref) {
3655: foreach my $pair (@pairs) {
1.271 raeburn 3656: my ($key,$courseinfo) = split(/=/,$pair,2);
3657: $courseinfo =~ s/=/:/g;
1.384 raeburn 3658: if (defined($hashref->{$key})) {
3659: my $value = &Apache::lonnet::thaw_unescape($hashref->{$key});
3660: if (ref($value) eq 'HASH') {
3661: my @items = ('description','inst_code','owner','type');
3662: my @new_items = split(/:/,$courseinfo,-1);
3663: my %storehash;
3664: for (my $i=0; $i<@new_items; $i++) {
1.391 raeburn 3665: $storehash{$items[$i]} = &unescape($new_items[$i]);
1.384 raeburn 3666: }
3667: $hashref->{$key} =
3668: &Apache::lonnet::freeze_escape(\%storehash);
3669: my $unesc_key = &unescape($key);
3670: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
3671: next;
1.383 raeburn 3672: }
1.384 raeburn 3673: }
3674: my @current_items = split(/:/,$hashref->{$key},-1);
3675: shift(@current_items); # remove description
3676: pop(@current_items); # remove last access
3677: my $numcurrent = scalar(@current_items);
3678: if ($numcurrent > 3) {
3679: $numcurrent = 3;
3680: }
3681: my @new_items = split(/:/,$courseinfo,-1);
3682: my $numnew = scalar(@new_items);
3683: if ($numcurrent > 0) {
3684: if ($numnew <= $numcurrent) { # flushcourselogs() from pre 2.2
3685: for (my $j=$numcurrent-$numnew; $j>=0; $j--) {
3686: $courseinfo .= ':'.$current_items[$numcurrent-$j-1];
1.333 raeburn 3687: }
1.272 raeburn 3688: }
3689: }
1.384 raeburn 3690: $hashref->{$key}=$courseinfo.':'.$now;
1.234 foxr 3691: }
1.311 albertel 3692: if (&untie_domain_hash($hashref)) {
1.253 foxr 3693: &Reply( $client, "ok\n", $userinput);
1.234 foxr 3694: } else {
1.253 foxr 3695: &Failure($client, "error: ".($!+0)
1.234 foxr 3696: ." untie(GDBM) Failed ".
3697: "while attempting courseidput\n", $userinput);
3698: }
3699: } else {
1.253 foxr 3700: &Failure($client, "error: ".($!+0)
1.234 foxr 3701: ." tie(GDBM) Failed ".
3702: "while attempting courseidput\n", $userinput);
3703: }
3704:
3705: return 1;
3706: }
3707: ®ister_handler("courseidput", \&put_course_id_handler, 0, 1, 0);
3708:
1.383 raeburn 3709: sub put_course_id_hash_handler {
3710: my ($cmd, $tail, $client) = @_;
3711: my $userinput = "$cmd:$tail";
1.384 raeburn 3712: my ($udom,$mode,$what) = split(/:/, $tail,3);
1.383 raeburn 3713: chomp($what);
3714: my $now=time;
3715: my @pairs=split(/\&/,$what);
1.384 raeburn 3716: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
1.383 raeburn 3717: if ($hashref) {
3718: foreach my $pair (@pairs) {
3719: my ($key,$value)=split(/=/,$pair);
1.384 raeburn 3720: my $unesc_key = &unescape($key);
3721: if ($mode ne 'timeonly') {
3722: if (!defined($hashref->{&escape('lasttime:'.$unesc_key)})) {
3723: my $curritems = &Apache::lonnet::thaw_unescape($key);
3724: if (ref($curritems) ne 'HASH') {
3725: my @current_items = split(/:/,$hashref->{$key},-1);
3726: my $lasttime = pop(@current_items);
3727: $hashref->{&escape('lasttime:'.$unesc_key)} = $lasttime;
3728: } else {
3729: $hashref->{&escape('lasttime:'.$unesc_key)} = '';
3730: }
3731: }
3732: $hashref->{$key} = $value;
3733: }
3734: if ($mode ne 'notime') {
3735: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
3736: }
1.383 raeburn 3737: }
3738: if (&untie_domain_hash($hashref)) {
3739: &Reply($client, "ok\n", $userinput);
3740: } else {
3741: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3742: "while attempting courseidputhash\n", $userinput);
3743: }
3744: } else {
3745: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3746: "while attempting courseidputhash\n", $userinput);
3747: }
3748: return 1;
3749: }
3750: ®ister_handler("courseidputhash", \&put_course_id_hash_handler, 0, 1, 0);
3751:
1.234 foxr 3752: # Retrieves the value of a course id resource keyword pattern
3753: # defined since a starting date. Both the starting date and the
3754: # keyword pattern are optional. If the starting date is not supplied it
3755: # is treated as the beginning of time. If the pattern is not found,
3756: # it is treatred as "." matching everything.
3757: #
3758: # Parameters:
3759: # $cmd - Command keyword that resulted in us being dispatched.
3760: # $tail - The remainder of the command that, in this case, consists
3761: # of a colon separated list of:
3762: # domain - The domain in which the course database is
3763: # defined.
3764: # since - Optional parameter describing the minimum
3765: # time of definition(?) of the resources that
3766: # will match the dump.
3767: # description - regular expression that is used to filter
3768: # the dump. Only keywords matching this regexp
3769: # will be used.
1.272 raeburn 3770: # institutional code - optional supplied code to filter
3771: # the dump. Only courses with an institutional code
3772: # that match the supplied code will be returned.
1.336 raeburn 3773: # owner - optional supplied username and domain of owner to
3774: # filter the dump. Only courses for which the course
3775: # owner matches the supplied username and/or domain
3776: # will be returned. Pre-2.2.0 legacy entries from
3777: # nohist_courseiddump will only contain usernames.
1.384 raeburn 3778: # type - optional parameter for selection
1.418 raeburn 3779: # regexp_ok - if 1 or -1 allow the supplied institutional code
3780: # filter to behave as a regular expression:
3781: # 1 will not exclude the course if the instcode matches the RE
3782: # -1 will exclude the course if the instcode matches the RE
1.384 raeburn 3783: # rtn_as_hash - whether to return the information available for
3784: # each matched item as a frozen hash of all
3785: # key, value pairs in the item's hash, or as a
3786: # colon-separated list of (in order) description,
3787: # institutional code, and course owner.
1.404 raeburn 3788: # selfenrollonly - filter by courses allowing self-enrollment
3789: # now or in the future (selfenrollonly = 1).
3790: # catfilter - filter by course category, assigned to a course
3791: # using manually defined categories (i.e., not
1.407 raeburn 3792: # self-cataloging based on on institutional code).
1.404 raeburn 3793: # showhidden - include course in results even if course
1.407 raeburn 3794: # was set to be excluded from course catalog (DC only).
1.404 raeburn 3795: # caller - if set to 'coursecatalog', courses set to be hidden
3796: # from course catalog will be excluded from results (unless
3797: # overridden by "showhidden".
1.427 raeburn 3798: # cloner - escaped username:domain of course cloner (if picking course to
1.419 raeburn 3799: # clone).
3800: # cc_clone_list - escaped comma separated list of courses for which
3801: # course cloner has active CC role (and so can clone
3802: # automatically).
1.427 raeburn 3803: # cloneonly - filter by courses for which cloner has rights to clone.
3804: # createdbefore - include courses for which creation date preceeded this date.
3805: # createdafter - include courses for which creation date followed this date.
3806: # creationcontext - include courses created in specified context
1.404 raeburn 3807: #
1.445 raeburn 3808: # domcloner - flag to indicate if user can create CCs in course's domain.
3809: # If so, ability to clone course is automatic.
3810: #
1.234 foxr 3811: # $client - The socket open on the client.
3812: # Returns:
3813: # 1 - Continue processing.
3814: # Side Effects:
3815: # a reply is written to $client.
3816: sub dump_course_id_handler {
3817: my ($cmd, $tail, $client) = @_;
3818: my $userinput = "$cmd:$tail";
3819:
1.333 raeburn 3820: my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter,
1.404 raeburn 3821: $typefilter,$regexp_ok,$rtn_as_hash,$selfenrollonly,$catfilter,$showhidden,
1.427 raeburn 3822: $caller,$cloner,$cc_clone_list,$cloneonly,$createdbefore,$createdafter,
1.445 raeburn 3823: $creationcontext,$domcloner) =split(/:/,$tail);
1.397 raeburn 3824: my $now = time;
1.419 raeburn 3825: my ($cloneruname,$clonerudom,%cc_clone);
1.234 foxr 3826: if (defined($description)) {
3827: $description=&unescape($description);
3828: } else {
3829: $description='.';
3830: }
1.266 raeburn 3831: if (defined($instcodefilter)) {
3832: $instcodefilter=&unescape($instcodefilter);
3833: } else {
3834: $instcodefilter='.';
3835: }
1.336 raeburn 3836: my ($ownerunamefilter,$ownerdomfilter);
1.266 raeburn 3837: if (defined($ownerfilter)) {
3838: $ownerfilter=&unescape($ownerfilter);
1.336 raeburn 3839: if ($ownerfilter ne '.' && defined($ownerfilter)) {
3840: if ($ownerfilter =~ /^([^:]*):([^:]*)$/) {
3841: $ownerunamefilter = $1;
3842: $ownerdomfilter = $2;
3843: } else {
3844: $ownerunamefilter = $ownerfilter;
3845: $ownerdomfilter = '';
3846: }
3847: }
1.266 raeburn 3848: } else {
3849: $ownerfilter='.';
3850: }
1.336 raeburn 3851:
1.282 raeburn 3852: if (defined($coursefilter)) {
3853: $coursefilter=&unescape($coursefilter);
3854: } else {
3855: $coursefilter='.';
3856: }
1.333 raeburn 3857: if (defined($typefilter)) {
3858: $typefilter=&unescape($typefilter);
3859: } else {
3860: $typefilter='.';
3861: }
1.344 raeburn 3862: if (defined($regexp_ok)) {
3863: $regexp_ok=&unescape($regexp_ok);
3864: }
1.401 raeburn 3865: if (defined($catfilter)) {
3866: $catfilter=&unescape($catfilter);
3867: }
1.419 raeburn 3868: if (defined($cloner)) {
3869: $cloner = &unescape($cloner);
3870: ($cloneruname,$clonerudom) = ($cloner =~ /^($LONCAPA::match_username):($LONCAPA::match_domain)$/);
3871: }
3872: if (defined($cc_clone_list)) {
3873: $cc_clone_list = &unescape($cc_clone_list);
3874: my @cc_cloners = split('&',$cc_clone_list);
3875: foreach my $cid (@cc_cloners) {
3876: my ($clonedom,$clonenum) = split(':',$cid);
3877: next if ($clonedom ne $udom);
3878: $cc_clone{$clonedom.'_'.$clonenum} = 1;
3879: }
3880: }
1.431 raeburn 3881: if ($createdbefore ne '') {
1.427 raeburn 3882: $createdbefore = &unescape($createdbefore);
3883: } else {
3884: $createdbefore = 0;
3885: }
1.431 raeburn 3886: if ($createdafter ne '') {
1.427 raeburn 3887: $createdafter = &unescape($createdafter);
3888: } else {
3889: $createdafter = 0;
3890: }
1.431 raeburn 3891: if ($creationcontext ne '') {
1.427 raeburn 3892: $creationcontext = &unescape($creationcontext);
3893: } else {
3894: $creationcontext = '.';
3895: }
1.384 raeburn 3896: my $unpack = 1;
3897: if ($description eq '.' && $instcodefilter eq '.' && $coursefilter eq '.' &&
3898: $typefilter eq '.') {
3899: $unpack = 0;
3900: }
3901: if (!defined($since)) { $since=0; }
1.234 foxr 3902: my $qresult='';
3903: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
3904: if ($hashref) {
1.384 raeburn 3905: while (my ($key,$value) = each(%$hashref)) {
1.397 raeburn 3906: my ($unesc_key,$lasttime_key,$lasttime,$is_hash,%val,
1.427 raeburn 3907: %unesc_val,$selfenroll_end,$selfenroll_types,$created,
3908: $context);
1.384 raeburn 3909: $unesc_key = &unescape($key);
3910: if ($unesc_key =~ /^lasttime:/) {
3911: next;
3912: } else {
3913: $lasttime_key = &escape('lasttime:'.$unesc_key);
3914: }
3915: if ($hashref->{$lasttime_key} ne '') {
3916: $lasttime = $hashref->{$lasttime_key};
3917: next if ($lasttime<$since);
3918: }
1.419 raeburn 3919: my ($canclone,$valchange);
1.384 raeburn 3920: my $items = &Apache::lonnet::thaw_unescape($value);
3921: if (ref($items) eq 'HASH') {
1.429 raeburn 3922: if ($hashref->{$lasttime_key} eq '') {
1.430 raeburn 3923: next if ($since > 1);
1.429 raeburn 3924: }
1.384 raeburn 3925: $is_hash = 1;
1.445 raeburn 3926: if ($domcloner) {
3927: $canclone = 1;
3928: } elsif (defined($clonerudom)) {
1.419 raeburn 3929: if ($items->{'cloners'}) {
3930: my @cloneable = split(',',$items->{'cloners'});
3931: if (@cloneable) {
3932: if (grep(/^\*$/,@cloneable)) {
3933: $canclone = 1;
3934: } elsif (grep(/^\*:\Q$clonerudom\E$/,@cloneable)) {
3935: $canclone = 1;
3936: } elsif (grep(/^\Q$cloneruname\E:\Q$clonerudom\E$/,@cloneable)) {
3937: $canclone = 1;
3938: }
3939: }
3940: unless ($canclone) {
3941: if ($cloneruname ne '' && $clonerudom ne '') {
3942: if ($cc_clone{$unesc_key}) {
3943: $canclone = 1;
3944: $items->{'cloners'} .= ','.$cloneruname.':'.
3945: $clonerudom;
3946: $valchange = 1;
3947: }
3948: }
3949: }
3950: } elsif (defined($cloneruname)) {
3951: if ($cc_clone{$unesc_key}) {
3952: $canclone = 1;
3953: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
3954: $valchange = 1;
3955: }
1.437 raeburn 3956: unless ($canclone) {
3957: if ($items->{'owner'} =~ /:/) {
3958: if ($items->{'owner'} eq $cloner) {
3959: $canclone = 1;
3960: }
1.444 raeburn 3961: } elsif ($cloner eq $items->{'owner'}.':'.$udom) {
1.437 raeburn 3962: $canclone = 1;
3963: }
3964: if ($canclone) {
3965: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
3966: $valchange = 1;
3967: }
3968: }
1.419 raeburn 3969: }
3970: }
1.384 raeburn 3971: if ($unpack || !$rtn_as_hash) {
3972: $unesc_val{'descr'} = $items->{'description'};
3973: $unesc_val{'inst_code'} = $items->{'inst_code'};
3974: $unesc_val{'owner'} = $items->{'owner'};
3975: $unesc_val{'type'} = $items->{'type'};
1.419 raeburn 3976: $unesc_val{'cloners'} = $items->{'cloners'};
1.427 raeburn 3977: $unesc_val{'created'} = $items->{'created'};
3978: $unesc_val{'context'} = $items->{'context'};
1.404 raeburn 3979: }
3980: $selfenroll_types = $items->{'selfenroll_types'};
3981: $selfenroll_end = $items->{'selfenroll_end_date'};
1.427 raeburn 3982: $created = $items->{'created'};
3983: $context = $items->{'context'};
1.404 raeburn 3984: if ($selfenrollonly) {
3985: next if (!$selfenroll_types);
3986: if (($selfenroll_end > 0) && ($selfenroll_end <= $now)) {
3987: next;
1.397 raeburn 3988: }
1.404 raeburn 3989: }
1.427 raeburn 3990: if ($creationcontext ne '.') {
3991: next if (($context ne '') && ($context ne $creationcontext));
3992: }
3993: if ($createdbefore > 0) {
3994: next if (($created eq '') || ($created > $createdbefore));
3995: }
3996: if ($createdafter > 0) {
3997: next if (($created eq '') || ($created <= $createdafter));
3998: }
1.404 raeburn 3999: if ($catfilter ne '') {
1.406 raeburn 4000: next if ($items->{'categories'} eq '');
4001: my @categories = split('&',$items->{'categories'});
1.407 raeburn 4002: next if (@categories == 0);
4003: my @subcats = split('&',$catfilter);
4004: my $matchcat = 0;
4005: foreach my $cat (@categories) {
4006: if (grep(/^\Q$cat\E$/,@subcats)) {
4007: $matchcat = 1;
4008: last;
4009: }
4010: }
4011: next if (!$matchcat);
1.404 raeburn 4012: }
4013: if ($caller eq 'coursecatalog') {
1.405 raeburn 4014: if ($items->{'hidefromcat'} eq 'yes') {
4015: next if !$showhidden;
1.401 raeburn 4016: }
1.384 raeburn 4017: }
1.383 raeburn 4018: } else {
1.401 raeburn 4019: next if ($catfilter ne '');
1.419 raeburn 4020: next if ($selfenrollonly);
1.427 raeburn 4021: next if ($createdbefore || $createdafter);
4022: next if ($creationcontext ne '.');
1.419 raeburn 4023: if ((defined($clonerudom)) && (defined($cloneruname))) {
4024: if ($cc_clone{$unesc_key}) {
4025: $canclone = 1;
4026: $val{'cloners'} = &escape($cloneruname.':'.$clonerudom);
4027: }
4028: }
1.384 raeburn 4029: $is_hash = 0;
1.388 raeburn 4030: my @courseitems = split(/:/,$value);
1.403 raeburn 4031: $lasttime = pop(@courseitems);
1.402 raeburn 4032: if ($hashref->{$lasttime_key} eq '') {
4033: next if ($lasttime<$since);
4034: }
1.384 raeburn 4035: ($val{'descr'},$val{'inst_code'},$val{'owner'},$val{'type'}) = @courseitems;
1.383 raeburn 4036: }
1.419 raeburn 4037: if ($cloneonly) {
4038: next unless ($canclone);
4039: }
1.266 raeburn 4040: my $match = 1;
1.384 raeburn 4041: if ($description ne '.') {
4042: if (!$is_hash) {
4043: $unesc_val{'descr'} = &unescape($val{'descr'});
4044: }
4045: if (eval{$unesc_val{'descr'} !~ /\Q$description\E/i}) {
1.266 raeburn 4046: $match = 0;
1.384 raeburn 4047: }
1.266 raeburn 4048: }
1.384 raeburn 4049: if ($instcodefilter ne '.') {
4050: if (!$is_hash) {
4051: $unesc_val{'inst_code'} = &unescape($val{'inst_code'});
4052: }
1.418 raeburn 4053: if ($regexp_ok == 1) {
1.384 raeburn 4054: if (eval{$unesc_val{'inst_code'} !~ /$instcodefilter/}) {
1.344 raeburn 4055: $match = 0;
4056: }
1.418 raeburn 4057: } elsif ($regexp_ok == -1) {
4058: if (eval{$unesc_val{'inst_code'} =~ /$instcodefilter/}) {
4059: $match = 0;
4060: }
1.344 raeburn 4061: } else {
1.384 raeburn 4062: if (eval{$unesc_val{'inst_code'} !~ /\Q$instcodefilter\E/i}) {
1.344 raeburn 4063: $match = 0;
4064: }
1.266 raeburn 4065: }
1.234 foxr 4066: }
1.384 raeburn 4067: if ($ownerfilter ne '.') {
4068: if (!$is_hash) {
4069: $unesc_val{'owner'} = &unescape($val{'owner'});
4070: }
1.336 raeburn 4071: if (($ownerunamefilter ne '') && ($ownerdomfilter ne '')) {
1.384 raeburn 4072: if ($unesc_val{'owner'} =~ /:/) {
4073: if (eval{$unesc_val{'owner'} !~
4074: /\Q$ownerunamefilter\E:\Q$ownerdomfilter\E$/i}) {
1.336 raeburn 4075: $match = 0;
4076: }
4077: } else {
1.384 raeburn 4078: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4079: $match = 0;
4080: }
4081: }
4082: } elsif ($ownerunamefilter ne '') {
1.384 raeburn 4083: if ($unesc_val{'owner'} =~ /:/) {
4084: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E:[^:]+$/i}) {
1.336 raeburn 4085: $match = 0;
4086: }
4087: } else {
1.384 raeburn 4088: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4089: $match = 0;
4090: }
4091: }
4092: } elsif ($ownerdomfilter ne '') {
1.384 raeburn 4093: if ($unesc_val{'owner'} =~ /:/) {
4094: if (eval{$unesc_val{'owner'} !~ /^[^:]+:\Q$ownerdomfilter\E/}) {
1.336 raeburn 4095: $match = 0;
4096: }
4097: } else {
4098: if ($ownerdomfilter ne $udom) {
4099: $match = 0;
4100: }
4101: }
1.266 raeburn 4102: }
4103: }
1.384 raeburn 4104: if ($coursefilter ne '.') {
4105: if (eval{$unesc_key !~ /^$udom(_)\Q$coursefilter\E$/}) {
1.282 raeburn 4106: $match = 0;
4107: }
4108: }
1.384 raeburn 4109: if ($typefilter ne '.') {
4110: if (!$is_hash) {
4111: $unesc_val{'type'} = &unescape($val{'type'});
4112: }
4113: if ($unesc_val{'type'} eq '') {
1.333 raeburn 4114: if ($typefilter ne 'Course') {
4115: $match = 0;
4116: }
1.383 raeburn 4117: } else {
1.384 raeburn 4118: if (eval{$unesc_val{'type'} !~ /^\Q$typefilter\E$/}) {
1.333 raeburn 4119: $match = 0;
4120: }
4121: }
4122: }
1.266 raeburn 4123: if ($match == 1) {
1.384 raeburn 4124: if ($rtn_as_hash) {
4125: if ($is_hash) {
1.419 raeburn 4126: if ($valchange) {
4127: my $newvalue = &Apache::lonnet::freeze_escape($items);
4128: $qresult.=$key.'='.$newvalue.'&';
4129: } else {
4130: $qresult.=$key.'='.$value.'&';
4131: }
1.384 raeburn 4132: } else {
1.388 raeburn 4133: my %rtnhash = ( 'description' => &unescape($val{'descr'}),
4134: 'inst_code' => &unescape($val{'inst_code'}),
4135: 'owner' => &unescape($val{'owner'}),
4136: 'type' => &unescape($val{'type'}),
1.419 raeburn 4137: 'cloners' => &unescape($val{'cloners'}),
1.384 raeburn 4138: );
4139: my $items = &Apache::lonnet::freeze_escape(\%rtnhash);
4140: $qresult.=$key.'='.$items.'&';
4141: }
1.383 raeburn 4142: } else {
1.384 raeburn 4143: if ($is_hash) {
4144: $qresult .= $key.'='.&escape($unesc_val{'descr'}).':'.
4145: &escape($unesc_val{'inst_code'}).':'.
4146: &escape($unesc_val{'owner'}).'&';
4147: } else {
4148: $qresult .= $key.'='.$val{'descr'}.':'.$val{'inst_code'}.
4149: ':'.$val{'owner'}.'&';
4150: }
1.383 raeburn 4151: }
1.266 raeburn 4152: }
1.234 foxr 4153: }
1.311 albertel 4154: if (&untie_domain_hash($hashref)) {
1.234 foxr 4155: chop($qresult);
1.387 albertel 4156: &Reply($client, \$qresult, $userinput);
1.234 foxr 4157: } else {
4158: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4159: "while attempting courseiddump\n", $userinput);
4160: }
4161: } else {
4162: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4163: "while attempting courseiddump\n", $userinput);
4164: }
4165: return 1;
4166: }
4167: ®ister_handler("courseiddump", \&dump_course_id_handler, 0, 1, 0);
1.238 foxr 4168:
1.438 raeburn 4169: sub course_lastaccess_handler {
4170: my ($cmd, $tail, $client) = @_;
4171: my $userinput = "$cmd:$tail";
4172: my ($cdom,$cnum) = split(':',$tail);
4173: my (%lastaccess,$qresult);
4174: my $hashref = &tie_domain_hash($cdom, "nohist_courseids", &GDBM_WRCREAT());
4175: if ($hashref) {
4176: while (my ($key,$value) = each(%$hashref)) {
4177: my ($unesc_key,$lasttime);
4178: $unesc_key = &unescape($key);
4179: if ($cnum) {
4180: next unless ($unesc_key =~ /\Q$cdom\E_\Q$cnum\E$/);
4181: }
4182: if ($unesc_key =~ /^lasttime:($LONCAPA::match_domain\_$LONCAPA::match_courseid)/) {
4183: $lastaccess{$1} = $value;
4184: } else {
4185: my $items = &Apache::lonnet::thaw_unescape($value);
4186: if (ref($items) eq 'HASH') {
4187: unless ($lastaccess{$unesc_key}) {
4188: $lastaccess{$unesc_key} = '';
4189: }
4190: } else {
4191: my @courseitems = split(':',$value);
4192: $lastaccess{$unesc_key} = pop(@courseitems);
4193: }
4194: }
4195: }
4196: foreach my $cid (sort(keys(%lastaccess))) {
4197: $qresult.=&escape($cid).'='.$lastaccess{$cid}.'&';
4198: }
4199: if (&untie_domain_hash($hashref)) {
4200: if ($qresult) {
4201: chop($qresult);
4202: }
4203: &Reply($client, \$qresult, $userinput);
4204: } else {
4205: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4206: "while attempting lastacourseaccess\n", $userinput);
4207: }
4208: } else {
4209: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4210: "while attempting lastcourseaccess\n", $userinput);
4211: }
4212: return 1;
4213: }
4214: ®ister_handler("courselastaccess",\&course_lastaccess_handler, 0, 1, 0);
4215:
1.238 foxr 4216: #
1.348 raeburn 4217: # Puts an unencrypted entry in a namespace db file at the domain level
4218: #
4219: # Parameters:
4220: # $cmd - The command that got us here.
4221: # $tail - Tail of the command (remaining parameters).
4222: # $client - File descriptor connected to client.
4223: # Returns
4224: # 0 - Requested to exit, caller should shut down.
4225: # 1 - Continue processing.
4226: # Side effects:
4227: # reply is written to $client.
4228: #
4229: sub put_domain_handler {
4230: my ($cmd,$tail,$client) = @_;
4231:
4232: my $userinput = "$cmd:$tail";
4233:
4234: my ($udom,$namespace,$what) =split(/:/,$tail,3);
4235: chomp($what);
4236: my @pairs=split(/\&/,$what);
4237: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_WRCREAT(),
4238: "P", $what);
4239: if ($hashref) {
4240: foreach my $pair (@pairs) {
4241: my ($key,$value)=split(/=/,$pair);
4242: $hashref->{$key}=$value;
4243: }
4244: if (&untie_domain_hash($hashref)) {
4245: &Reply($client, "ok\n", $userinput);
4246: } else {
4247: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4248: "while attempting putdom\n", $userinput);
4249: }
4250: } else {
4251: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4252: "while attempting putdom\n", $userinput);
4253: }
4254:
4255: return 1;
4256: }
4257: ®ister_handler("putdom", \&put_domain_handler, 0, 1, 0);
4258:
4259: # Unencrypted get from the namespace database file at the domain level.
4260: # This function retrieves a keyed item from a specific named database in the
4261: # domain directory.
4262: #
4263: # Parameters:
4264: # $cmd - Command request keyword (get).
4265: # $tail - Tail of the command. This is a colon separated list
4266: # consisting of the domain and the 'namespace'
4267: # which selects the gdbm file to do the lookup in,
4268: # & separated list of keys to lookup. Note that
4269: # the values are returned as an & separated list too.
4270: # $client - File descriptor open on the client.
4271: # Returns:
4272: # 1 - Continue processing.
4273: # 0 - Exit.
4274: # Side effects:
4275: # reply is written to $client.
4276: #
4277:
4278: sub get_domain_handler {
4279: my ($cmd, $tail, $client) = @_;
4280:
4281: my $userinput = "$client:$tail";
4282:
4283: my ($udom,$namespace,$what)=split(/:/,$tail,3);
4284: chomp($what);
4285: my @queries=split(/\&/,$what);
4286: my $qresult='';
4287: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_READER());
4288: if ($hashref) {
4289: for (my $i=0;$i<=$#queries;$i++) {
4290: $qresult.="$hashref->{$queries[$i]}&";
4291: }
4292: if (&untie_domain_hash($hashref)) {
4293: $qresult=~s/\&$//;
1.387 albertel 4294: &Reply($client, \$qresult, $userinput);
1.348 raeburn 4295: } else {
4296: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
4297: "while attempting getdom\n",$userinput);
4298: }
4299: } else {
4300: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4301: "while attempting getdom\n",$userinput);
4302: }
4303:
4304: return 1;
4305: }
1.360 raeburn 4306: ®ister_handler("getdom", \&get_domain_handler, 0, 1, 0);
1.348 raeburn 4307:
1.420 raeburn 4308: #
1.238 foxr 4309: # Puts an id to a domains id database.
4310: #
4311: # Parameters:
4312: # $cmd - The command that triggered us.
4313: # $tail - Remainder of the request other than the command. This is a
4314: # colon separated list containing:
4315: # $domain - The domain for which we are writing the id.
4316: # $pairs - The id info to write... this is and & separated list
4317: # of keyword=value.
4318: # $client - Socket open on the client.
4319: # Returns:
4320: # 1 - Continue processing.
4321: # Side effects:
4322: # reply is written to $client.
4323: #
4324: sub put_id_handler {
4325: my ($cmd,$tail,$client) = @_;
4326:
4327:
4328: my $userinput = "$cmd:$tail";
4329:
4330: my ($udom,$what)=split(/:/,$tail);
4331: chomp($what);
4332: my @pairs=split(/\&/,$what);
4333: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
4334: "P", $what);
4335: if ($hashref) {
4336: foreach my $pair (@pairs) {
4337: my ($key,$value)=split(/=/,$pair);
4338: $hashref->{$key}=$value;
4339: }
1.311 albertel 4340: if (&untie_domain_hash($hashref)) {
1.238 foxr 4341: &Reply($client, "ok\n", $userinput);
4342: } else {
4343: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4344: "while attempting idput\n", $userinput);
4345: }
4346: } else {
4347: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4348: "while attempting idput\n", $userinput);
4349: }
4350:
4351: return 1;
4352: }
1.263 albertel 4353: ®ister_handler("idput", \&put_id_handler, 0, 1, 0);
1.238 foxr 4354:
4355: #
4356: # Retrieves a set of id values from the id database.
4357: # Returns an & separated list of results, one for each requested id to the
4358: # client.
4359: #
4360: # Parameters:
4361: # $cmd - Command keyword that caused us to be dispatched.
4362: # $tail - Tail of the command. Consists of a colon separated:
4363: # domain - the domain whose id table we dump
4364: # ids Consists of an & separated list of
4365: # id keywords whose values will be fetched.
4366: # nonexisting keywords will have an empty value.
4367: # $client - Socket open on the client.
4368: #
4369: # Returns:
4370: # 1 - indicating processing should continue.
4371: # Side effects:
4372: # An & separated list of results is written to $client.
4373: #
4374: sub get_id_handler {
4375: my ($cmd, $tail, $client) = @_;
4376:
4377:
4378: my $userinput = "$client:$tail";
4379:
4380: my ($udom,$what)=split(/:/,$tail);
4381: chomp($what);
4382: my @queries=split(/\&/,$what);
4383: my $qresult='';
4384: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_READER());
4385: if ($hashref) {
4386: for (my $i=0;$i<=$#queries;$i++) {
4387: $qresult.="$hashref->{$queries[$i]}&";
4388: }
1.311 albertel 4389: if (&untie_domain_hash($hashref)) {
1.238 foxr 4390: $qresult=~s/\&$//;
1.387 albertel 4391: &Reply($client, \$qresult, $userinput);
1.238 foxr 4392: } else {
4393: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
4394: "while attempting idget\n",$userinput);
4395: }
4396: } else {
4397: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4398: "while attempting idget\n",$userinput);
4399: }
4400:
4401: return 1;
4402: }
1.263 albertel 4403: ®ister_handler("idget", \&get_id_handler, 0, 1, 0);
1.238 foxr 4404:
4405: #
1.299 raeburn 4406: # Puts broadcast e-mail sent by Domain Coordinator in nohist_dcmail database
4407: #
4408: # Parameters
4409: # $cmd - Command keyword that caused us to be dispatched.
4410: # $tail - Tail of the command. Consists of a colon separated:
4411: # domain - the domain whose dcmail we are recording
4412: # email Consists of key=value pair
4413: # where key is unique msgid
4414: # and value is message (in XML)
4415: # $client - Socket open on the client.
4416: #
4417: # Returns:
4418: # 1 - indicating processing should continue.
4419: # Side effects
4420: # reply is written to $client.
4421: #
4422: sub put_dcmail_handler {
4423: my ($cmd,$tail,$client) = @_;
4424: my $userinput = "$cmd:$tail";
4425:
4426: my ($udom,$what)=split(/:/,$tail);
4427: chomp($what);
4428: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
4429: if ($hashref) {
4430: my ($key,$value)=split(/=/,$what);
4431: $hashref->{$key}=$value;
4432: }
1.311 albertel 4433: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4434: &Reply($client, "ok\n", $userinput);
4435: } else {
4436: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4437: "while attempting dcmailput\n", $userinput);
4438: }
4439: return 1;
4440: }
4441: ®ister_handler("dcmailput", \&put_dcmail_handler, 0, 1, 0);
4442:
4443: #
4444: # Retrieves broadcast e-mail from nohist_dcmail database
4445: # Returns to client an & separated list of key=value pairs,
4446: # where key is msgid and value is message information.
4447: #
4448: # Parameters
4449: # $cmd - Command keyword that caused us to be dispatched.
4450: # $tail - Tail of the command. Consists of a colon separated:
4451: # domain - the domain whose dcmail table we dump
4452: # startfilter - beginning of time window
4453: # endfilter - end of time window
4454: # sendersfilter - & separated list of username:domain
4455: # for senders to search for.
4456: # $client - Socket open on the client.
4457: #
4458: # Returns:
4459: # 1 - indicating processing should continue.
4460: # Side effects
4461: # reply (& separated list of msgid=messageinfo pairs) is
4462: # written to $client.
4463: #
4464: sub dump_dcmail_handler {
4465: my ($cmd, $tail, $client) = @_;
4466:
4467: my $userinput = "$cmd:$tail";
4468: my ($udom,$startfilter,$endfilter,$sendersfilter) = split(/:/,$tail);
4469: chomp($sendersfilter);
4470: my @senders = ();
4471: if (defined($startfilter)) {
4472: $startfilter=&unescape($startfilter);
4473: } else {
4474: $startfilter='.';
4475: }
4476: if (defined($endfilter)) {
4477: $endfilter=&unescape($endfilter);
4478: } else {
4479: $endfilter='.';
4480: }
4481: if (defined($sendersfilter)) {
4482: $sendersfilter=&unescape($sendersfilter);
1.300 albertel 4483: @senders = map { &unescape($_) } split(/\&/,$sendersfilter);
1.299 raeburn 4484: }
4485:
4486: my $qresult='';
4487: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
4488: if ($hashref) {
4489: while (my ($key,$value) = each(%$hashref)) {
4490: my $match = 1;
1.303 albertel 4491: my ($timestamp,$subj,$uname,$udom) =
4492: split(/:/,&unescape(&unescape($key)),5); # yes, twice really
1.299 raeburn 4493: $subj = &unescape($subj);
4494: unless ($startfilter eq '.' || !defined($startfilter)) {
4495: if ($timestamp < $startfilter) {
4496: $match = 0;
4497: }
4498: }
4499: unless ($endfilter eq '.' || !defined($endfilter)) {
4500: if ($timestamp > $endfilter) {
4501: $match = 0;
4502: }
4503: }
4504: unless (@senders < 1) {
4505: unless (grep/^$uname:$udom$/,@senders) {
4506: $match = 0;
4507: }
4508: }
4509: if ($match == 1) {
4510: $qresult.=$key.'='.$value.'&';
4511: }
4512: }
1.311 albertel 4513: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4514: chop($qresult);
1.387 albertel 4515: &Reply($client, \$qresult, $userinput);
1.299 raeburn 4516: } else {
4517: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4518: "while attempting dcmaildump\n", $userinput);
4519: }
4520: } else {
4521: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4522: "while attempting dcmaildump\n", $userinput);
4523: }
4524: return 1;
4525: }
4526:
4527: ®ister_handler("dcmaildump", \&dump_dcmail_handler, 0, 1, 0);
4528:
4529: #
4530: # Puts domain roles in nohist_domainroles database
4531: #
4532: # Parameters
4533: # $cmd - Command keyword that caused us to be dispatched.
4534: # $tail - Tail of the command. Consists of a colon separated:
4535: # domain - the domain whose roles we are recording
4536: # role - Consists of key=value pair
4537: # where key is unique role
4538: # and value is start/end date information
4539: # $client - Socket open on the client.
4540: #
4541: # Returns:
4542: # 1 - indicating processing should continue.
4543: # Side effects
4544: # reply is written to $client.
4545: #
4546:
4547: sub put_domainroles_handler {
4548: my ($cmd,$tail,$client) = @_;
4549:
4550: my $userinput = "$cmd:$tail";
4551: my ($udom,$what)=split(/:/,$tail);
4552: chomp($what);
4553: my @pairs=split(/\&/,$what);
4554: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
4555: if ($hashref) {
4556: foreach my $pair (@pairs) {
4557: my ($key,$value)=split(/=/,$pair);
4558: $hashref->{$key}=$value;
4559: }
1.311 albertel 4560: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4561: &Reply($client, "ok\n", $userinput);
4562: } else {
4563: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4564: "while attempting domroleput\n", $userinput);
4565: }
4566: } else {
4567: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4568: "while attempting domroleput\n", $userinput);
4569: }
4570:
4571: return 1;
4572: }
4573:
4574: ®ister_handler("domroleput", \&put_domainroles_handler, 0, 1, 0);
4575:
4576: #
4577: # Retrieves domain roles from nohist_domainroles database
4578: # Returns to client an & separated list of key=value pairs,
4579: # where key is role and value is start and end date information.
4580: #
4581: # Parameters
4582: # $cmd - Command keyword that caused us to be dispatched.
4583: # $tail - Tail of the command. Consists of a colon separated:
4584: # domain - the domain whose domain roles table we dump
4585: # $client - Socket open on the client.
4586: #
4587: # Returns:
4588: # 1 - indicating processing should continue.
4589: # Side effects
4590: # reply (& separated list of role=start/end info pairs) is
4591: # written to $client.
4592: #
4593: sub dump_domainroles_handler {
4594: my ($cmd, $tail, $client) = @_;
4595:
4596: my $userinput = "$cmd:$tail";
4597: my ($udom,$startfilter,$endfilter,$rolesfilter) = split(/:/,$tail);
4598: chomp($rolesfilter);
4599: my @roles = ();
4600: if (defined($startfilter)) {
4601: $startfilter=&unescape($startfilter);
4602: } else {
4603: $startfilter='.';
4604: }
4605: if (defined($endfilter)) {
4606: $endfilter=&unescape($endfilter);
4607: } else {
4608: $endfilter='.';
4609: }
4610: if (defined($rolesfilter)) {
4611: $rolesfilter=&unescape($rolesfilter);
1.300 albertel 4612: @roles = split(/\&/,$rolesfilter);
1.299 raeburn 4613: }
1.421 raeburn 4614:
1.299 raeburn 4615: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
4616: if ($hashref) {
4617: my $qresult = '';
4618: while (my ($key,$value) = each(%$hashref)) {
4619: my $match = 1;
1.421 raeburn 4620: my ($end,$start) = split(/:/,&unescape($value));
1.299 raeburn 4621: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,&unescape($key));
1.421 raeburn 4622: unless (@roles < 1) {
4623: unless (grep/^\Q$trole\E$/,@roles) {
4624: $match = 0;
4625: next;
4626: }
4627: }
1.299 raeburn 4628: unless ($startfilter eq '.' || !defined($startfilter)) {
1.415 raeburn 4629: if ((defined($start)) && ($start >= $startfilter)) {
1.299 raeburn 4630: $match = 0;
1.421 raeburn 4631: next;
1.299 raeburn 4632: }
4633: }
4634: unless ($endfilter eq '.' || !defined($endfilter)) {
1.421 raeburn 4635: if ((defined($end)) && (($end > 0) && ($end <= $endfilter))) {
1.299 raeburn 4636: $match = 0;
1.421 raeburn 4637: next;
1.299 raeburn 4638: }
4639: }
4640: if ($match == 1) {
4641: $qresult.=$key.'='.$value.'&';
4642: }
4643: }
1.311 albertel 4644: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4645: chop($qresult);
1.387 albertel 4646: &Reply($client, \$qresult, $userinput);
1.299 raeburn 4647: } else {
4648: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4649: "while attempting domrolesdump\n", $userinput);
4650: }
4651: } else {
4652: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4653: "while attempting domrolesdump\n", $userinput);
4654: }
4655: return 1;
4656: }
4657:
4658: ®ister_handler("domrolesdump", \&dump_domainroles_handler, 0, 1, 0);
4659:
4660:
1.238 foxr 4661: # Process the tmpput command I'm not sure what this does.. Seems to
4662: # create a file in the lonDaemons/tmp directory of the form $id.tmp
4663: # where Id is the client's ip concatenated with a sequence number.
4664: # The file will contain some value that is passed in. Is this e.g.
4665: # a login token?
4666: #
4667: # Parameters:
4668: # $cmd - The command that got us dispatched.
4669: # $tail - The remainder of the request following $cmd:
4670: # In this case this will be the contents of the file.
4671: # $client - Socket connected to the client.
4672: # Returns:
4673: # 1 indicating processing can continue.
4674: # Side effects:
4675: # A file is created in the local filesystem.
4676: # A reply is sent to the client.
4677: sub tmp_put_handler {
4678: my ($cmd, $what, $client) = @_;
4679:
4680: my $userinput = "$cmd:$what"; # Reconstruct for logging.
4681:
1.347 raeburn 4682: my ($record,$context) = split(/:/,$what);
4683: if ($context ne '') {
4684: chomp($context);
4685: $context = &unescape($context);
4686: }
4687: my ($id,$store);
1.238 foxr 4688: $tmpsnum++;
1.347 raeburn 4689: if ($context eq 'resetpw') {
4690: $id = &md5_hex(&md5_hex(time.{}.rand().$$));
4691: } else {
4692: $id = $$.'_'.$clientip.'_'.$tmpsnum;
4693: }
1.238 foxr 4694: $id=~s/\W/\_/g;
1.347 raeburn 4695: $record=~s/\n//g;
1.238 foxr 4696: my $execdir=$perlvar{'lonDaemons'};
4697: if ($store=IO::File->new(">$execdir/tmp/$id.tmp")) {
1.347 raeburn 4698: print $store $record;
1.238 foxr 4699: close $store;
1.387 albertel 4700: &Reply($client, \$id, $userinput);
1.238 foxr 4701: } else {
4702: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
4703: "while attempting tmpput\n", $userinput);
4704: }
4705: return 1;
4706:
4707: }
4708: ®ister_handler("tmpput", \&tmp_put_handler, 0, 1, 0);
1.263 albertel 4709:
1.238 foxr 4710: # Processes the tmpget command. This command returns the contents
4711: # of a temporary resource file(?) created via tmpput.
4712: #
4713: # Paramters:
4714: # $cmd - Command that got us dispatched.
4715: # $id - Tail of the command, contain the id of the resource
4716: # we want to fetch.
4717: # $client - socket open on the client.
4718: # Return:
4719: # 1 - Inidcating processing can continue.
4720: # Side effects:
4721: # A reply is sent to the client.
4722: #
4723: sub tmp_get_handler {
4724: my ($cmd, $id, $client) = @_;
4725:
4726: my $userinput = "$cmd:$id";
4727:
4728:
4729: $id=~s/\W/\_/g;
4730: my $store;
4731: my $execdir=$perlvar{'lonDaemons'};
4732: if ($store=IO::File->new("$execdir/tmp/$id.tmp")) {
4733: my $reply=<$store>;
1.387 albertel 4734: &Reply( $client, \$reply, $userinput);
1.238 foxr 4735: close $store;
4736: } else {
4737: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
4738: "while attempting tmpget\n", $userinput);
4739: }
4740:
4741: return 1;
4742: }
4743: ®ister_handler("tmpget", \&tmp_get_handler, 0, 1, 0);
1.263 albertel 4744:
1.238 foxr 4745: #
4746: # Process the tmpdel command. This command deletes a temp resource
4747: # created by the tmpput command.
4748: #
4749: # Parameters:
4750: # $cmd - Command that got us here.
4751: # $id - Id of the temporary resource created.
4752: # $client - socket open on the client process.
4753: #
4754: # Returns:
4755: # 1 - Indicating processing should continue.
4756: # Side Effects:
4757: # A file is deleted
4758: # A reply is sent to the client.
4759: sub tmp_del_handler {
4760: my ($cmd, $id, $client) = @_;
4761:
4762: my $userinput= "$cmd:$id";
4763:
4764: chomp($id);
4765: $id=~s/\W/\_/g;
4766: my $execdir=$perlvar{'lonDaemons'};
4767: if (unlink("$execdir/tmp/$id.tmp")) {
4768: &Reply($client, "ok\n", $userinput);
4769: } else {
4770: &Failure( $client, "error: ".($!+0)."Unlink tmp Failed ".
4771: "while attempting tmpdel\n", $userinput);
4772: }
4773:
4774: return 1;
4775:
4776: }
4777: ®ister_handler("tmpdel", \&tmp_del_handler, 0, 1, 0);
1.263 albertel 4778:
1.238 foxr 4779: #
1.246 foxr 4780: # Processes the setannounce command. This command
4781: # creates a file named announce.txt in the top directory of
4782: # the documentn root and sets its contents. The announce.txt file is
4783: # printed in its entirety at the LonCAPA login page. Note:
4784: # once the announcement.txt fileis created it cannot be deleted.
4785: # However, setting the contents of the file to empty removes the
4786: # announcement from the login page of loncapa so who cares.
4787: #
4788: # Parameters:
4789: # $cmd - The command that got us dispatched.
4790: # $announcement - The text of the announcement.
4791: # $client - Socket open on the client process.
4792: # Retunrns:
4793: # 1 - Indicating request processing should continue
4794: # Side Effects:
4795: # The file {DocRoot}/announcement.txt is created.
4796: # A reply is sent to $client.
4797: #
4798: sub set_announce_handler {
4799: my ($cmd, $announcement, $client) = @_;
4800:
4801: my $userinput = "$cmd:$announcement";
4802:
4803: chomp($announcement);
4804: $announcement=&unescape($announcement);
4805: if (my $store=IO::File->new('>'.$perlvar{'lonDocRoot'}.
4806: '/announcement.txt')) {
4807: print $store $announcement;
4808: close $store;
4809: &Reply($client, "ok\n", $userinput);
4810: } else {
4811: &Failure($client, "error: ".($!+0)."\n", $userinput);
4812: }
4813:
4814: return 1;
4815: }
4816: ®ister_handler("setannounce", \&set_announce_handler, 0, 1, 0);
1.263 albertel 4817:
1.246 foxr 4818: #
4819: # Return the version of the daemon. This can be used to determine
4820: # the compatibility of cross version installations or, alternatively to
4821: # simply know who's out of date and who isn't. Note that the version
4822: # is returned concatenated with the tail.
4823: # Parameters:
4824: # $cmd - the request that dispatched to us.
4825: # $tail - Tail of the request (client's version?).
4826: # $client - Socket open on the client.
4827: #Returns:
4828: # 1 - continue processing requests.
4829: # Side Effects:
4830: # Replies with version to $client.
4831: sub get_version_handler {
4832: my ($cmd, $tail, $client) = @_;
4833:
4834: my $userinput = $cmd.$tail;
4835:
4836: &Reply($client, &version($userinput)."\n", $userinput);
4837:
4838:
4839: return 1;
4840: }
4841: ®ister_handler("version", \&get_version_handler, 0, 1, 0);
1.263 albertel 4842:
1.246 foxr 4843: # Set the current host and domain. This is used to support
4844: # multihomed systems. Each IP of the system, or even separate daemons
4845: # on the same IP can be treated as handling a separate lonCAPA virtual
4846: # machine. This command selects the virtual lonCAPA. The client always
4847: # knows the right one since it is lonc and it is selecting the domain/system
4848: # from the hosts.tab file.
4849: # Parameters:
4850: # $cmd - Command that dispatched us.
4851: # $tail - Tail of the command (domain/host requested).
4852: # $socket - Socket open on the client.
4853: #
4854: # Returns:
4855: # 1 - Indicates the program should continue to process requests.
4856: # Side-effects:
4857: # The default domain/system context is modified for this daemon.
4858: # a reply is sent to the client.
4859: #
4860: sub set_virtual_host_handler {
4861: my ($cmd, $tail, $socket) = @_;
4862:
4863: my $userinput ="$cmd:$tail";
4864:
4865: &Reply($client, &sethost($userinput)."\n", $userinput);
4866:
4867:
4868: return 1;
4869: }
1.247 albertel 4870: ®ister_handler("sethost", \&set_virtual_host_handler, 0, 1, 0);
1.246 foxr 4871:
4872: # Process a request to exit:
4873: # - "bye" is sent to the client.
4874: # - The client socket is shutdown and closed.
4875: # - We indicate to the caller that we should exit.
4876: # Formal Parameters:
4877: # $cmd - The command that got us here.
4878: # $tail - Tail of the command (empty).
4879: # $client - Socket open on the tail.
4880: # Returns:
4881: # 0 - Indicating the program should exit!!
4882: #
4883: sub exit_handler {
4884: my ($cmd, $tail, $client) = @_;
4885:
4886: my $userinput = "$cmd:$tail";
4887:
4888: &logthis("Client $clientip ($clientname) hanging up: $userinput");
4889: &Reply($client, "bye\n", $userinput);
4890: $client->shutdown(2); # shutdown the socket forcibly.
4891: $client->close();
4892:
4893: return 0;
4894: }
1.248 foxr 4895: ®ister_handler("exit", \&exit_handler, 0,1,1);
4896: ®ister_handler("init", \&exit_handler, 0,1,1);
4897: ®ister_handler("quit", \&exit_handler, 0,1,1);
4898:
4899: # Determine if auto-enrollment is enabled.
4900: # Note that the original had what I believe to be a defect.
4901: # The original returned 0 if the requestor was not a registerd client.
4902: # It should return "refused".
4903: # Formal Parameters:
4904: # $cmd - The command that invoked us.
4905: # $tail - The tail of the command (Extra command parameters.
4906: # $client - The socket open on the client that issued the request.
4907: # Returns:
4908: # 1 - Indicating processing should continue.
4909: #
4910: sub enrollment_enabled_handler {
4911: my ($cmd, $tail, $client) = @_;
4912: my $userinput = $cmd.":".$tail; # For logging purposes.
4913:
4914:
1.337 albertel 4915: my ($cdom) = split(/:/, $tail, 2); # Domain we're asking about.
4916:
1.248 foxr 4917: my $outcome = &localenroll::run($cdom);
1.387 albertel 4918: &Reply($client, \$outcome, $userinput);
1.248 foxr 4919:
4920: return 1;
4921: }
4922: ®ister_handler("autorun", \&enrollment_enabled_handler, 0, 1, 0);
4923:
1.417 raeburn 4924: #
1.423 raeburn 4925: # Validate an institutional code used for a LON-CAPA course.
1.417 raeburn 4926: #
4927: # Formal Parameters:
4928: # $cmd - The command request that got us dispatched.
4929: # $tail - The tail of the command. In this case,
4930: # this is a colon separated set of words that will be split
4931: # into:
1.424 raeburn 4932: # $dom - The domain for which the check of
4933: # institutional course code will occur.
4934: #
4935: # $instcode - The institutional code for the course
4936: # being requested, or validated for rights
4937: # to request.
4938: #
4939: # $owner - The course requestor (who will be the
4940: # course owner, in the form username:domain
4941: #
1.417 raeburn 4942: # $client - Socket open on the client.
4943: # Returns:
4944: # 1 - Indicating processing should continue.
4945: #
4946: sub validate_instcode_handler {
4947: my ($cmd, $tail, $client) = @_;
4948: my $userinput = "$cmd:$tail";
1.423 raeburn 4949: my ($dom,$instcode,$owner) = split(/:/, $tail);
1.422 raeburn 4950: $instcode = &unescape($instcode);
4951: $owner = &unescape($owner);
1.426 raeburn 4952: my ($outcome,$description) =
4953: &localenroll::validate_instcode($dom,$instcode,$owner);
4954: my $result = &escape($outcome).'&'.&escape($description);
4955: &Reply($client, \$result, $userinput);
1.417 raeburn 4956:
4957: return 1;
4958: }
4959: ®ister_handler("autovalidateinstcode", \&validate_instcode_handler, 0, 1, 0);
4960:
1.248 foxr 4961: # Get the official sections for which auto-enrollment is possible.
4962: # Since the admin people won't know about 'unofficial sections'
4963: # we cannot auto-enroll on them.
4964: # Formal Parameters:
4965: # $cmd - The command request that got us dispatched here.
4966: # $tail - The remainder of the request. In our case this
4967: # will be split into:
4968: # $coursecode - The course name from the admin point of view.
4969: # $cdom - The course's domain(?).
4970: # $client - Socket open on the client.
4971: # Returns:
4972: # 1 - Indiciting processing should continue.
4973: #
4974: sub get_sections_handler {
4975: my ($cmd, $tail, $client) = @_;
4976: my $userinput = "$cmd:$tail";
4977:
4978: my ($coursecode, $cdom) = split(/:/, $tail);
4979: my @secs = &localenroll::get_sections($coursecode,$cdom);
4980: my $seclist = &escape(join(':',@secs));
4981:
1.387 albertel 4982: &Reply($client, \$seclist, $userinput);
1.248 foxr 4983:
4984:
4985: return 1;
4986: }
4987: ®ister_handler("autogetsections", \&get_sections_handler, 0, 1, 0);
4988:
4989: # Validate the owner of a new course section.
4990: #
4991: # Formal Parameters:
4992: # $cmd - Command that got us dispatched.
4993: # $tail - the remainder of the command. For us this consists of a
4994: # colon separated string containing:
4995: # $inst - Course Id from the institutions point of view.
4996: # $owner - Proposed owner of the course.
4997: # $cdom - Domain of the course (from the institutions
4998: # point of view?)..
4999: # $client - Socket open on the client.
5000: #
5001: # Returns:
5002: # 1 - Processing should continue.
5003: #
5004: sub validate_course_owner_handler {
5005: my ($cmd, $tail, $client) = @_;
5006: my $userinput = "$cmd:$tail";
5007: my ($inst_course_id, $owner, $cdom) = split(/:/, $tail);
5008:
1.336 raeburn 5009: $owner = &unescape($owner);
1.248 foxr 5010: my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom);
1.387 albertel 5011: &Reply($client, \$outcome, $userinput);
1.248 foxr 5012:
5013:
5014:
5015: return 1;
5016: }
5017: ®ister_handler("autonewcourse", \&validate_course_owner_handler, 0, 1, 0);
1.263 albertel 5018:
1.248 foxr 5019: #
5020: # Validate a course section in the official schedule of classes
5021: # from the institutions point of view (part of autoenrollment).
5022: #
5023: # Formal Parameters:
5024: # $cmd - The command request that got us dispatched.
5025: # $tail - The tail of the command. In this case,
5026: # this is a colon separated set of words that will be split
5027: # into:
5028: # $inst_course_id - The course/section id from the
5029: # institutions point of view.
5030: # $cdom - The domain from the institutions
5031: # point of view.
5032: # $client - Socket open on the client.
5033: # Returns:
5034: # 1 - Indicating processing should continue.
5035: #
5036: sub validate_course_section_handler {
5037: my ($cmd, $tail, $client) = @_;
5038: my $userinput = "$cmd:$tail";
5039: my ($inst_course_id, $cdom) = split(/:/, $tail);
5040:
5041: my $outcome=&localenroll::validate_courseID($inst_course_id,$cdom);
1.387 albertel 5042: &Reply($client, \$outcome, $userinput);
1.248 foxr 5043:
5044:
5045: return 1;
5046: }
5047: ®ister_handler("autovalidatecourse", \&validate_course_section_handler, 0, 1, 0);
5048:
5049: #
1.340 raeburn 5050: # Validate course owner's access to enrollment data for specific class section.
5051: #
5052: #
5053: # Formal Parameters:
5054: # $cmd - The command request that got us dispatched.
5055: # $tail - The tail of the command. In this case this is a colon separated
5056: # set of words that will be split into:
5057: # $inst_class - Institutional code for the specific class section
5058: # $courseowner - The escaped username:domain of the course owner
5059: # $cdom - The domain of the course from the institution's
5060: # point of view.
5061: # $client - The socket open on the client.
5062: # Returns:
5063: # 1 - continue processing.
5064: #
5065:
5066: sub validate_class_access_handler {
5067: my ($cmd, $tail, $client) = @_;
5068: my $userinput = "$cmd:$tail";
1.383 raeburn 5069: my ($inst_class,$ownerlist,$cdom) = split(/:/, $tail);
1.392 raeburn 5070: my $owners = &unescape($ownerlist);
1.341 albertel 5071: my $outcome;
5072: eval {
5073: local($SIG{__DIE__})='DEFAULT';
1.392 raeburn 5074: $outcome=&localenroll::check_section($inst_class,$owners,$cdom);
1.341 albertel 5075: };
1.387 albertel 5076: &Reply($client,\$outcome, $userinput);
1.340 raeburn 5077:
5078: return 1;
5079: }
5080: ®ister_handler("autovalidateclass_sec", \&validate_class_access_handler, 0, 1, 0);
5081:
5082: #
5083: # Create a password for a new LON-CAPA user added by auto-enrollment.
5084: # Only used for case where authentication method for new user is localauth
1.248 foxr 5085: #
5086: # Formal Parameters:
5087: # $cmd - The command request that got us dispatched.
5088: # $tail - The tail of the command. In this case this is a colon separated
5089: # set of words that will be split into:
1.340 raeburn 5090: # $authparam - An authentication parameter (localauth parameter).
1.248 foxr 5091: # $cdom - The domain of the course from the institution's
5092: # point of view.
5093: # $client - The socket open on the client.
5094: # Returns:
5095: # 1 - continue processing.
5096: #
5097: sub create_auto_enroll_password_handler {
5098: my ($cmd, $tail, $client) = @_;
5099: my $userinput = "$cmd:$tail";
5100:
5101: my ($authparam, $cdom) = split(/:/, $userinput);
5102:
5103: my ($create_passwd,$authchk);
5104: ($authparam,
5105: $create_passwd,
5106: $authchk) = &localenroll::create_password($authparam,$cdom);
5107:
5108: &Reply($client, &escape($authparam.':'.$create_passwd.':'.$authchk)."\n",
5109: $userinput);
5110:
5111:
5112: return 1;
5113: }
5114: ®ister_handler("autocreatepassword", \&create_auto_enroll_password_handler,
5115: 0, 1, 0);
5116:
5117: # Retrieve and remove temporary files created by/during autoenrollment.
5118: #
5119: # Formal Parameters:
5120: # $cmd - The command that got us dispatched.
5121: # $tail - The tail of the command. In our case this is a colon
5122: # separated list that will be split into:
5123: # $filename - The name of the file to remove.
5124: # The filename is given as a path relative to
5125: # the LonCAPA temp file directory.
5126: # $client - Socket open on the client.
5127: #
5128: # Returns:
5129: # 1 - Continue processing.
5130: sub retrieve_auto_file_handler {
5131: my ($cmd, $tail, $client) = @_;
5132: my $userinput = "cmd:$tail";
5133:
5134: my ($filename) = split(/:/, $tail);
5135:
5136: my $source = $perlvar{'lonDaemons'}.'/tmp/'.$filename;
5137: if ( (-e $source) && ($filename ne '') ) {
5138: my $reply = '';
5139: if (open(my $fh,$source)) {
5140: while (<$fh>) {
5141: chomp($_);
5142: $_ =~ s/^\s+//g;
5143: $_ =~ s/\s+$//g;
5144: $reply .= $_;
5145: }
5146: close($fh);
5147: &Reply($client, &escape($reply)."\n", $userinput);
5148:
5149: # Does this have to be uncommented??!? (RF).
5150: #
5151: # unlink($source);
5152: } else {
5153: &Failure($client, "error\n", $userinput);
5154: }
5155: } else {
5156: &Failure($client, "error\n", $userinput);
5157: }
5158:
5159:
5160: return 1;
5161: }
5162: ®ister_handler("autoretrieve", \&retrieve_auto_file_handler, 0,1,0);
5163:
1.423 raeburn 5164: sub crsreq_checks_handler {
5165: my ($cmd, $tail, $client) = @_;
5166: my $userinput = "$cmd:$tail";
5167: my $dom = $tail;
5168: my $result;
1.424 raeburn 5169: my @reqtypes = ('official','unofficial','community');
1.423 raeburn 5170: eval {
5171: local($SIG{__DIE__})='DEFAULT';
5172: my %validations;
1.424 raeburn 5173: my $response = &localenroll::crsreq_checks($dom,\@reqtypes,
5174: \%validations);
1.423 raeburn 5175: if ($response eq 'ok') {
5176: foreach my $key (keys(%validations)) {
5177: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
5178: }
5179: $result =~ s/\&$//;
5180: } else {
5181: $result = 'error';
5182: }
5183: };
5184: if (!$@) {
5185: &Reply($client, \$result, $userinput);
5186: } else {
5187: &Failure($client,"unknown_cmd\n",$userinput);
5188: }
5189: return 1;
5190: }
5191: ®ister_handler("autocrsreqchecks", \&crsreq_checks_handler, 0, 1, 0);
5192:
5193: sub validate_crsreq_handler {
5194: my ($cmd, $tail, $client) = @_;
5195: my $userinput = "$cmd:$tail";
5196: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = split(/:/, $tail);
5197: $instcode = &unescape($instcode);
5198: $owner = &unescape($owner);
5199: $crstype = &unescape($crstype);
5200: $inststatuslist = &unescape($inststatuslist);
5201: $instcode = &unescape($instcode);
5202: $instseclist = &unescape($instseclist);
5203: my $outcome;
5204: eval {
5205: local($SIG{__DIE__})='DEFAULT';
5206: $outcome = &localenroll::validate_crsreq($dom,$owner,$crstype,
5207: $inststatuslist,$instcode,
5208: $instseclist);
5209: };
5210: if (!$@) {
5211: &Reply($client, \$outcome, $userinput);
5212: } else {
5213: &Failure($client,"unknown_cmd\n",$userinput);
5214: }
5215: return 1;
5216: }
5217: ®ister_handler("autocrsreqvalidation", \&validate_crsreq_handler, 0, 1, 0);
5218:
1.248 foxr 5219: #
5220: # Read and retrieve institutional code format (for support form).
5221: # Formal Parameters:
5222: # $cmd - Command that dispatched us.
5223: # $tail - Tail of the command. In this case it conatins
5224: # the course domain and the coursename.
5225: # $client - Socket open on the client.
5226: # Returns:
5227: # 1 - Continue processing.
5228: #
5229: sub get_institutional_code_format_handler {
5230: my ($cmd, $tail, $client) = @_;
5231: my $userinput = "$cmd:$tail";
5232:
5233: my $reply;
5234: my($cdom,$course) = split(/:/,$tail);
5235: my @pairs = split/\&/,$course;
5236: my %instcodes = ();
5237: my %codes = ();
5238: my @codetitles = ();
5239: my %cat_titles = ();
5240: my %cat_order = ();
5241: foreach (@pairs) {
5242: my ($key,$value) = split/=/,$_;
5243: $instcodes{&unescape($key)} = &unescape($value);
5244: }
5245: my $formatreply = &localenroll::instcode_format($cdom,
5246: \%instcodes,
5247: \%codes,
5248: \@codetitles,
5249: \%cat_titles,
5250: \%cat_order);
5251: if ($formatreply eq 'ok') {
1.365 albertel 5252: my $codes_str = &Apache::lonnet::hash2str(%codes);
5253: my $codetitles_str = &Apache::lonnet::array2str(@codetitles);
5254: my $cat_titles_str = &Apache::lonnet::hash2str(%cat_titles);
5255: my $cat_order_str = &Apache::lonnet::hash2str(%cat_order);
1.248 foxr 5256: &Reply($client,
5257: $codes_str.':'.$codetitles_str.':'.$cat_titles_str.':'
5258: .$cat_order_str."\n",
5259: $userinput);
5260: } else {
5261: # this else branch added by RF since if not ok, lonc will
5262: # hang waiting on reply until timeout.
5263: #
5264: &Reply($client, "format_error\n", $userinput);
5265: }
5266:
5267: return 1;
5268: }
1.265 albertel 5269: ®ister_handler("autoinstcodeformat",
5270: \&get_institutional_code_format_handler,0,1,0);
1.246 foxr 5271:
1.345 raeburn 5272: sub get_institutional_defaults_handler {
5273: my ($cmd, $tail, $client) = @_;
5274: my $userinput = "$cmd:$tail";
5275:
5276: my $dom = $tail;
5277: my %defaults_hash;
5278: my @code_order;
5279: my $outcome;
5280: eval {
5281: local($SIG{__DIE__})='DEFAULT';
5282: $outcome = &localenroll::instcode_defaults($dom,\%defaults_hash,
5283: \@code_order);
5284: };
5285: if (!$@) {
5286: if ($outcome eq 'ok') {
5287: my $result='';
5288: while (my ($key,$value) = each(%defaults_hash)) {
5289: $result.=&escape($key).'='.&escape($value).'&';
5290: }
5291: $result .= 'code_order='.&escape(join('&',@code_order));
1.387 albertel 5292: &Reply($client,\$result,$userinput);
1.345 raeburn 5293: } else {
5294: &Reply($client,"error\n", $userinput);
5295: }
5296: } else {
5297: &Failure($client,"unknown_cmd\n",$userinput);
5298: }
5299: }
5300: ®ister_handler("autoinstcodedefaults",
5301: \&get_institutional_defaults_handler,0,1,0);
5302:
1.416 raeburn 5303: sub get_possible_instcodes_handler {
5304: my ($cmd, $tail, $client) = @_;
5305: my $userinput = "$cmd:$tail";
5306:
5307: my $reply;
5308: my $cdom = $tail;
1.417 raeburn 5309: my (@codetitles,%cat_titles,%cat_order,@code_order);
1.416 raeburn 5310: my $formatreply = &localenroll::possible_instcodes($cdom,
5311: \@codetitles,
5312: \%cat_titles,
1.417 raeburn 5313: \%cat_order,
5314: \@code_order);
1.416 raeburn 5315: if ($formatreply eq 'ok') {
5316: my $result = join('&',map {&escape($_);} (@codetitles)).':';
1.417 raeburn 5317: $result .= join('&',map {&escape($_);} (@code_order)).':';
1.416 raeburn 5318: foreach my $key (keys(%cat_titles)) {
5319: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_titles{$key}).'&';
5320: }
5321: $result =~ s/\&$//;
5322: $result .= ':';
5323: foreach my $key (keys(%cat_order)) {
5324: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_order{$key}).'&';
5325: }
5326: $result =~ s/\&$//;
5327: &Reply($client,\$result,$userinput);
5328: } else {
5329: &Reply($client, "format_error\n", $userinput);
5330: }
5331: return 1;
5332: }
5333: ®ister_handler("autopossibleinstcodes",
5334: \&get_possible_instcodes_handler,0,1,0);
5335:
1.381 raeburn 5336: sub get_institutional_user_rules {
5337: my ($cmd, $tail, $client) = @_;
5338: my $userinput = "$cmd:$tail";
5339: my $dom = &unescape($tail);
5340: my (%rules_hash,@rules_order);
5341: my $outcome;
5342: eval {
5343: local($SIG{__DIE__})='DEFAULT';
5344: $outcome = &localenroll::username_rules($dom,\%rules_hash,\@rules_order);
5345: };
5346: if (!$@) {
5347: if ($outcome eq 'ok') {
5348: my $result;
5349: foreach my $key (keys(%rules_hash)) {
5350: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
5351: }
5352: $result =~ s/\&$//;
5353: $result .= ':';
5354: if (@rules_order > 0) {
5355: foreach my $item (@rules_order) {
5356: $result .= &escape($item).'&';
5357: }
5358: }
5359: $result =~ s/\&$//;
1.387 albertel 5360: &Reply($client,\$result,$userinput);
1.381 raeburn 5361: } else {
5362: &Reply($client,"error\n", $userinput);
5363: }
5364: } else {
5365: &Failure($client,"unknown_cmd\n",$userinput);
5366: }
5367: }
5368: ®ister_handler("instuserrules",\&get_institutional_user_rules,0,1,0);
5369:
1.389 raeburn 5370: sub get_institutional_id_rules {
5371: my ($cmd, $tail, $client) = @_;
5372: my $userinput = "$cmd:$tail";
5373: my $dom = &unescape($tail);
5374: my (%rules_hash,@rules_order);
5375: my $outcome;
5376: eval {
5377: local($SIG{__DIE__})='DEFAULT';
5378: $outcome = &localenroll::id_rules($dom,\%rules_hash,\@rules_order);
5379: };
5380: if (!$@) {
5381: if ($outcome eq 'ok') {
5382: my $result;
5383: foreach my $key (keys(%rules_hash)) {
5384: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
5385: }
5386: $result =~ s/\&$//;
5387: $result .= ':';
5388: if (@rules_order > 0) {
5389: foreach my $item (@rules_order) {
5390: $result .= &escape($item).'&';
5391: }
5392: }
5393: $result =~ s/\&$//;
5394: &Reply($client,\$result,$userinput);
5395: } else {
5396: &Reply($client,"error\n", $userinput);
5397: }
5398: } else {
5399: &Failure($client,"unknown_cmd\n",$userinput);
5400: }
5401: }
5402: ®ister_handler("instidrules",\&get_institutional_id_rules,0,1,0);
5403:
1.397 raeburn 5404: sub get_institutional_selfcreate_rules {
1.396 raeburn 5405: my ($cmd, $tail, $client) = @_;
5406: my $userinput = "$cmd:$tail";
5407: my $dom = &unescape($tail);
5408: my (%rules_hash,@rules_order);
5409: my $outcome;
5410: eval {
5411: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 5412: $outcome = &localenroll::selfcreate_rules($dom,\%rules_hash,\@rules_order);
1.396 raeburn 5413: };
5414: if (!$@) {
5415: if ($outcome eq 'ok') {
5416: my $result;
5417: foreach my $key (keys(%rules_hash)) {
5418: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
5419: }
5420: $result =~ s/\&$//;
5421: $result .= ':';
5422: if (@rules_order > 0) {
5423: foreach my $item (@rules_order) {
5424: $result .= &escape($item).'&';
5425: }
5426: }
5427: $result =~ s/\&$//;
5428: &Reply($client,\$result,$userinput);
5429: } else {
5430: &Reply($client,"error\n", $userinput);
5431: }
5432: } else {
5433: &Failure($client,"unknown_cmd\n",$userinput);
5434: }
5435: }
1.397 raeburn 5436: ®ister_handler("instemailrules",\&get_institutional_selfcreate_rules,0,1,0);
1.396 raeburn 5437:
1.381 raeburn 5438:
5439: sub institutional_username_check {
5440: my ($cmd, $tail, $client) = @_;
5441: my $userinput = "$cmd:$tail";
5442: my %rulecheck;
5443: my $outcome;
5444: my ($udom,$uname,@rules) = split(/:/,$tail);
5445: $udom = &unescape($udom);
5446: $uname = &unescape($uname);
5447: @rules = map {&unescape($_);} (@rules);
5448: eval {
5449: local($SIG{__DIE__})='DEFAULT';
5450: $outcome = &localenroll::username_check($udom,$uname,\@rules,\%rulecheck);
5451: };
5452: if (!$@) {
5453: if ($outcome eq 'ok') {
5454: my $result='';
5455: foreach my $key (keys(%rulecheck)) {
5456: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
5457: }
1.387 albertel 5458: &Reply($client,\$result,$userinput);
1.381 raeburn 5459: } else {
5460: &Reply($client,"error\n", $userinput);
5461: }
5462: } else {
5463: &Failure($client,"unknown_cmd\n",$userinput);
5464: }
5465: }
5466: ®ister_handler("instrulecheck",\&institutional_username_check,0,1,0);
5467:
1.389 raeburn 5468: sub institutional_id_check {
5469: my ($cmd, $tail, $client) = @_;
5470: my $userinput = "$cmd:$tail";
5471: my %rulecheck;
5472: my $outcome;
5473: my ($udom,$id,@rules) = split(/:/,$tail);
5474: $udom = &unescape($udom);
5475: $id = &unescape($id);
5476: @rules = map {&unescape($_);} (@rules);
5477: eval {
5478: local($SIG{__DIE__})='DEFAULT';
5479: $outcome = &localenroll::id_check($udom,$id,\@rules,\%rulecheck);
5480: };
5481: if (!$@) {
5482: if ($outcome eq 'ok') {
5483: my $result='';
5484: foreach my $key (keys(%rulecheck)) {
5485: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
5486: }
5487: &Reply($client,\$result,$userinput);
5488: } else {
5489: &Reply($client,"error\n", $userinput);
5490: }
5491: } else {
5492: &Failure($client,"unknown_cmd\n",$userinput);
5493: }
5494: }
5495: ®ister_handler("instidrulecheck",\&institutional_id_check,0,1,0);
1.345 raeburn 5496:
1.397 raeburn 5497: sub institutional_selfcreate_check {
1.396 raeburn 5498: my ($cmd, $tail, $client) = @_;
5499: my $userinput = "$cmd:$tail";
5500: my %rulecheck;
5501: my $outcome;
5502: my ($udom,$email,@rules) = split(/:/,$tail);
5503: $udom = &unescape($udom);
5504: $email = &unescape($email);
5505: @rules = map {&unescape($_);} (@rules);
5506: eval {
5507: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 5508: $outcome = &localenroll::selfcreate_check($udom,$email,\@rules,\%rulecheck);
1.396 raeburn 5509: };
5510: if (!$@) {
5511: if ($outcome eq 'ok') {
5512: my $result='';
5513: foreach my $key (keys(%rulecheck)) {
5514: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
5515: }
5516: &Reply($client,\$result,$userinput);
5517: } else {
5518: &Reply($client,"error\n", $userinput);
5519: }
5520: } else {
5521: &Failure($client,"unknown_cmd\n",$userinput);
5522: }
5523: }
1.397 raeburn 5524: ®ister_handler("instselfcreatecheck",\&institutional_selfcreate_check,0,1,0);
1.396 raeburn 5525:
1.317 raeburn 5526: # Get domain specific conditions for import of student photographs to a course
5527: #
5528: # Retrieves information from photo_permission subroutine in localenroll.
5529: # Returns outcome (ok) if no processing errors, and whether course owner is
5530: # required to accept conditions of use (yes/no).
5531: #
5532: #
5533: sub photo_permission_handler {
5534: my ($cmd, $tail, $client) = @_;
5535: my $userinput = "$cmd:$tail";
5536: my $cdom = $tail;
5537: my ($perm_reqd,$conditions);
1.320 albertel 5538: my $outcome;
5539: eval {
5540: local($SIG{__DIE__})='DEFAULT';
5541: $outcome = &localenroll::photo_permission($cdom,\$perm_reqd,
5542: \$conditions);
5543: };
5544: if (!$@) {
5545: &Reply($client, &escape($outcome.':'.$perm_reqd.':'. $conditions)."\n",
5546: $userinput);
5547: } else {
5548: &Failure($client,"unknown_cmd\n",$userinput);
5549: }
5550: return 1;
1.317 raeburn 5551: }
5552: ®ister_handler("autophotopermission",\&photo_permission_handler,0,1,0);
5553:
5554: #
5555: # Checks if student photo is available for a user in the domain, in the user's
5556: # directory (in /userfiles/internal/studentphoto.jpg).
5557: # Uses localstudentphoto:fetch() to ensure there is an up to date copy of
5558: # the student's photo.
5559:
5560: sub photo_check_handler {
5561: my ($cmd, $tail, $client) = @_;
5562: my $userinput = "$cmd:$tail";
5563: my ($udom,$uname,$pid) = split(/:/,$tail);
5564: $udom = &unescape($udom);
5565: $uname = &unescape($uname);
5566: $pid = &unescape($pid);
5567: my $path=&propath($udom,$uname).'/userfiles/internal/';
5568: if (!-e $path) {
5569: &mkpath($path);
5570: }
5571: my $response;
5572: my $result = &localstudentphoto::fetch($udom,$uname,$pid,\$response);
5573: $result .= ':'.$response;
5574: &Reply($client, &escape($result)."\n",$userinput);
1.320 albertel 5575: return 1;
1.317 raeburn 5576: }
5577: ®ister_handler("autophotocheck",\&photo_check_handler,0,1,0);
5578:
5579: #
5580: # Retrieve information from localenroll about whether to provide a button
5581: # for users who have enbled import of student photos to initiate an
5582: # update of photo files for registered students. Also include
5583: # comment to display alongside button.
5584:
5585: sub photo_choice_handler {
5586: my ($cmd, $tail, $client) = @_;
5587: my $userinput = "$cmd:$tail";
5588: my $cdom = &unescape($tail);
1.320 albertel 5589: my ($update,$comment);
5590: eval {
5591: local($SIG{__DIE__})='DEFAULT';
5592: ($update,$comment) = &localenroll::manager_photo_update($cdom);
5593: };
5594: if (!$@) {
5595: &Reply($client,&escape($update).':'.&escape($comment)."\n",$userinput);
5596: } else {
5597: &Failure($client,"unknown_cmd\n",$userinput);
5598: }
5599: return 1;
1.317 raeburn 5600: }
5601: ®ister_handler("autophotochoice",\&photo_choice_handler,0,1,0);
5602:
1.265 albertel 5603: #
5604: # Gets a student's photo to exist (in the correct image type) in the user's
5605: # directory.
5606: # Formal Parameters:
5607: # $cmd - The command request that got us dispatched.
5608: # $tail - A colon separated set of words that will be split into:
5609: # $domain - student's domain
5610: # $uname - student username
5611: # $type - image type desired
5612: # $client - The socket open on the client.
5613: # Returns:
5614: # 1 - continue processing.
1.317 raeburn 5615:
1.265 albertel 5616: sub student_photo_handler {
5617: my ($cmd, $tail, $client) = @_;
1.317 raeburn 5618: my ($domain,$uname,$ext,$type) = split(/:/, $tail);
1.265 albertel 5619:
1.317 raeburn 5620: my $path=&propath($domain,$uname). '/userfiles/internal/';
5621: my $filename = 'studentphoto.'.$ext;
5622: if ($type eq 'thumbnail') {
5623: $filename = 'studentphoto_tn.'.$ext;
5624: }
5625: if (-e $path.$filename) {
1.265 albertel 5626: &Reply($client,"ok\n","$cmd:$tail");
5627: return 1;
5628: }
5629: &mkpath($path);
1.317 raeburn 5630: my $file;
5631: if ($type eq 'thumbnail') {
1.320 albertel 5632: eval {
5633: local($SIG{__DIE__})='DEFAULT';
5634: $file=&localstudentphoto::fetch_thumbnail($domain,$uname);
5635: };
1.317 raeburn 5636: } else {
5637: $file=&localstudentphoto::fetch($domain,$uname);
5638: }
1.265 albertel 5639: if (!$file) {
5640: &Failure($client,"unavailable\n","$cmd:$tail");
5641: return 1;
5642: }
1.317 raeburn 5643: if (!-e $path.$filename) { &convert_photo($file,$path.$filename); }
5644: if (-e $path.$filename) {
1.265 albertel 5645: &Reply($client,"ok\n","$cmd:$tail");
5646: return 1;
5647: }
5648: &Failure($client,"unable_to_convert\n","$cmd:$tail");
5649: return 1;
5650: }
5651: ®ister_handler("studentphoto", \&student_photo_handler, 0, 1, 0);
1.246 foxr 5652:
1.361 raeburn 5653: sub inst_usertypes_handler {
5654: my ($cmd, $domain, $client) = @_;
5655: my $res;
5656: my $userinput = $cmd.":".$domain; # For logging purposes.
1.370 albertel 5657: my (%typeshash,@order,$result);
5658: eval {
5659: local($SIG{__DIE__})='DEFAULT';
5660: $result=&localenroll::inst_usertypes($domain,\%typeshash,\@order);
5661: };
5662: if ($result eq 'ok') {
1.361 raeburn 5663: if (keys(%typeshash) > 0) {
5664: foreach my $key (keys(%typeshash)) {
5665: $res.=&escape($key).'='.&escape($typeshash{$key}).'&';
5666: }
5667: }
5668: $res=~s/\&$//;
5669: $res .= ':';
5670: if (@order > 0) {
5671: foreach my $item (@order) {
5672: $res .= &escape($item).'&';
5673: }
5674: }
5675: $res=~s/\&$//;
5676: }
1.387 albertel 5677: &Reply($client, \$res, $userinput);
1.361 raeburn 5678: return 1;
5679: }
5680: ®ister_handler("inst_usertypes", \&inst_usertypes_handler, 0, 1, 0);
5681:
1.264 albertel 5682: # mkpath makes all directories for a file, expects an absolute path with a
5683: # file or a trailing / if just a dir is passed
5684: # returns 1 on success 0 on failure
5685: sub mkpath {
5686: my ($file)=@_;
5687: my @parts=split(/\//,$file,-1);
5688: my $now=$parts[0].'/'.$parts[1].'/'.$parts[2];
5689: for (my $i=3;$i<= ($#parts-1);$i++) {
1.265 albertel 5690: $now.='/'.$parts[$i];
1.264 albertel 5691: if (!-e $now) {
5692: if (!mkdir($now,0770)) { return 0; }
5693: }
5694: }
5695: return 1;
5696: }
5697:
1.207 foxr 5698: #---------------------------------------------------------------
5699: #
5700: # Getting, decoding and dispatching requests:
5701: #
5702: #
5703: # Get a Request:
5704: # Gets a Request message from the client. The transaction
5705: # is defined as a 'line' of text. We remove the new line
5706: # from the text line.
1.226 foxr 5707: #
1.211 albertel 5708: sub get_request {
1.207 foxr 5709: my $input = <$client>;
5710: chomp($input);
1.226 foxr 5711:
1.234 foxr 5712: &Debug("get_request: Request = $input\n");
1.207 foxr 5713:
5714: &status('Processing '.$clientname.':'.$input);
5715:
5716: return $input;
5717: }
1.212 foxr 5718: #---------------------------------------------------------------
5719: #
5720: # Process a request. This sub should shrink as each action
5721: # gets farmed out into a separat sub that is registered
5722: # with the dispatch hash.
5723: #
5724: # Parameters:
5725: # user_input - The request received from the client (lonc).
5726: # Returns:
5727: # true to keep processing, false if caller should exit.
5728: #
5729: sub process_request {
5730: my ($userinput) = @_; # Easier for now to break style than to
5731: # fix all the userinput -> user_input.
5732: my $wasenc = 0; # True if request was encrypted.
5733: # ------------------------------------------------------------ See if encrypted
1.322 albertel 5734: # for command
5735: # sethost:<server>
5736: # <command>:<args>
5737: # we just send it to the processor
5738: # for
5739: # sethost:<server>:<command>:<args>
5740: # we do the implict set host and then do the command
5741: if ($userinput =~ /^sethost:/) {
5742: (my $cmd,my $newid,$userinput) = split(':',$userinput,3);
5743: if (defined($userinput)) {
5744: &sethost("$cmd:$newid");
5745: } else {
5746: $userinput = "$cmd:$newid";
5747: }
5748: }
5749:
1.212 foxr 5750: if ($userinput =~ /^enc/) {
5751: $userinput = decipher($userinput);
5752: $wasenc=1;
5753: if(!$userinput) { # Cipher not defined.
1.251 foxr 5754: &Failure($client, "error: Encrypted data without negotated key\n");
1.212 foxr 5755: return 0;
5756: }
5757: }
5758: Debug("process_request: $userinput\n");
5759:
1.213 foxr 5760: #
5761: # The 'correct way' to add a command to lond is now to
5762: # write a sub to execute it and Add it to the command dispatch
5763: # hash via a call to register_handler.. The comments to that
5764: # sub should give you enough to go on to show how to do this
5765: # along with the examples that are building up as this code
5766: # is getting refactored. Until all branches of the
5767: # if/elseif monster below have been factored out into
5768: # separate procesor subs, if the dispatch hash is missing
5769: # the command keyword, we will fall through to the remainder
5770: # of the if/else chain below in order to keep this thing in
5771: # working order throughout the transmogrification.
5772:
5773: my ($command, $tail) = split(/:/, $userinput, 2);
5774: chomp($command);
5775: chomp($tail);
5776: $tail =~ s/(\r)//; # This helps people debugging with e.g. telnet.
1.214 foxr 5777: $command =~ s/(\r)//; # And this too for parameterless commands.
5778: if(!$tail) {
5779: $tail =""; # defined but blank.
5780: }
1.213 foxr 5781:
5782: &Debug("Command received: $command, encoded = $wasenc");
5783:
5784: if(defined $Dispatcher{$command}) {
5785:
5786: my $dispatch_info = $Dispatcher{$command};
5787: my $handler = $$dispatch_info[0];
5788: my $need_encode = $$dispatch_info[1];
5789: my $client_types = $$dispatch_info[2];
5790: Debug("Matched dispatch hash: mustencode: $need_encode "
5791: ."ClientType $client_types");
5792:
5793: # Validate the request:
5794:
5795: my $ok = 1;
5796: my $requesterprivs = 0;
5797: if(&isClient()) {
5798: $requesterprivs |= $CLIENT_OK;
5799: }
5800: if(&isManager()) {
5801: $requesterprivs |= $MANAGER_OK;
5802: }
5803: if($need_encode && (!$wasenc)) {
5804: Debug("Must encode but wasn't: $need_encode $wasenc");
5805: $ok = 0;
5806: }
5807: if(($client_types & $requesterprivs) == 0) {
5808: Debug("Client not privileged to do this operation");
5809: $ok = 0;
5810: }
5811:
5812: if($ok) {
5813: Debug("Dispatching to handler $command $tail");
5814: my $keep_going = &$handler($command, $tail, $client);
5815: return $keep_going;
5816: } else {
5817: Debug("Refusing to dispatch because client did not match requirements");
5818: Failure($client, "refused\n", $userinput);
5819: return 1;
5820: }
5821:
5822: }
5823:
1.262 foxr 5824: print $client "unknown_cmd\n";
1.212 foxr 5825: # -------------------------------------------------------------------- complete
5826: Debug("process_request - returning 1");
5827: return 1;
5828: }
1.207 foxr 5829: #
5830: # Decipher encoded traffic
5831: # Parameters:
5832: # input - Encoded data.
5833: # Returns:
5834: # Decoded data or undef if encryption key was not yet negotiated.
5835: # Implicit input:
5836: # cipher - This global holds the negotiated encryption key.
5837: #
1.211 albertel 5838: sub decipher {
1.207 foxr 5839: my ($input) = @_;
5840: my $output = '';
1.212 foxr 5841:
5842:
1.207 foxr 5843: if($cipher) {
5844: my($enc, $enclength, $encinput) = split(/:/, $input);
5845: for(my $encidx = 0; $encidx < length($encinput); $encidx += 16) {
5846: $output .=
5847: $cipher->decrypt(pack("H16", substr($encinput, $encidx, 16)));
5848: }
5849: return substr($output, 0, $enclength);
5850: } else {
5851: return undef;
5852: }
5853: }
5854:
5855: #
5856: # Register a command processor. This function is invoked to register a sub
5857: # to process a request. Once registered, the ProcessRequest sub can automatically
5858: # dispatch requests to an appropriate sub, and do the top level validity checking
5859: # as well:
5860: # - Is the keyword recognized.
5861: # - Is the proper client type attempting the request.
5862: # - Is the request encrypted if it has to be.
5863: # Parameters:
5864: # $request_name - Name of the request being registered.
5865: # This is the command request that will match
5866: # against the hash keywords to lookup the information
5867: # associated with the dispatch information.
5868: # $procedure - Reference to a sub to call to process the request.
5869: # All subs get called as follows:
5870: # Procedure($cmd, $tail, $replyfd, $key)
5871: # $cmd - the actual keyword that invoked us.
5872: # $tail - the tail of the request that invoked us.
5873: # $replyfd- File descriptor connected to the client
5874: # $must_encode - True if the request must be encoded to be good.
5875: # $client_ok - True if it's ok for a client to request this.
5876: # $manager_ok - True if it's ok for a manager to request this.
5877: # Side effects:
5878: # - On success, the Dispatcher hash has an entry added for the key $RequestName
5879: # - On failure, the program will die as it's a bad internal bug to try to
5880: # register a duplicate command handler.
5881: #
1.211 albertel 5882: sub register_handler {
1.212 foxr 5883: my ($request_name,$procedure,$must_encode, $client_ok,$manager_ok) = @_;
1.207 foxr 5884:
5885: # Don't allow duplication#
5886:
5887: if (defined $Dispatcher{$request_name}) {
5888: die "Attempting to define a duplicate request handler for $request_name\n";
5889: }
5890: # Build the client type mask:
5891:
5892: my $client_type_mask = 0;
5893: if($client_ok) {
5894: $client_type_mask |= $CLIENT_OK;
5895: }
5896: if($manager_ok) {
5897: $client_type_mask |= $MANAGER_OK;
5898: }
5899:
5900: # Enter the hash:
5901:
5902: my @entry = ($procedure, $must_encode, $client_type_mask);
5903:
5904: $Dispatcher{$request_name} = \@entry;
5905:
5906: }
5907:
5908:
5909: #------------------------------------------------------------------
5910:
5911:
5912:
5913:
1.141 foxr 5914: #
1.96 foxr 5915: # Convert an error return code from lcpasswd to a string value.
5916: #
5917: sub lcpasswdstrerror {
5918: my $ErrorCode = shift;
1.97 foxr 5919: if(($ErrorCode < 0) || ($ErrorCode > $lastpwderror)) {
1.96 foxr 5920: return "lcpasswd Unrecognized error return value ".$ErrorCode;
5921: } else {
1.98 foxr 5922: return $passwderrors[$ErrorCode];
1.96 foxr 5923: }
5924: }
5925:
1.97 foxr 5926: #
5927: # Convert an error return code from lcuseradd to a string value:
5928: #
5929: sub lcuseraddstrerror {
5930: my $ErrorCode = shift;
5931: if(($ErrorCode < 0) || ($ErrorCode > $lastadderror)) {
5932: return "lcuseradd - Unrecognized error code: ".$ErrorCode;
5933: } else {
1.98 foxr 5934: return $adderrors[$ErrorCode];
1.97 foxr 5935: }
5936: }
5937:
1.23 harris41 5938: # grabs exception and records it to log before exiting
5939: sub catchexception {
1.27 albertel 5940: my ($error)=@_;
1.25 www 5941: $SIG{'QUIT'}='DEFAULT';
5942: $SIG{__DIE__}='DEFAULT';
1.165 albertel 5943: &status("Catching exception");
1.190 albertel 5944: &logthis("<font color='red'>CRITICAL: "
1.373 albertel 5945: ."ABNORMAL EXIT. Child $$ for server ".$perlvar{'lonHostID'}." died through "
1.27 albertel 5946: ."a crash with this error msg->[$error]</font>");
1.57 www 5947: &logthis('Famous last words: '.$status.' - '.$lastlog);
1.27 albertel 5948: if ($client) { print $client "error: $error\n"; }
1.59 www 5949: $server->close();
1.27 albertel 5950: die($error);
1.23 harris41 5951: }
1.63 www 5952: sub timeout {
1.165 albertel 5953: &status("Handling Timeout");
1.190 albertel 5954: &logthis("<font color='red'>CRITICAL: TIME OUT ".$$."</font>");
1.63 www 5955: &catchexception('Timeout');
5956: }
1.22 harris41 5957: # -------------------------------- Set signal handlers to record abnormal exits
5958:
1.226 foxr 5959:
1.22 harris41 5960: $SIG{'QUIT'}=\&catchexception;
5961: $SIG{__DIE__}=\&catchexception;
5962:
1.81 matthew 5963: # ---------------------------------- Read loncapa_apache.conf and loncapa.conf
1.95 harris41 5964: &status("Read loncapa.conf and loncapa_apache.conf");
5965: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
1.141 foxr 5966: %perlvar=%{$perlvarref};
1.80 harris41 5967: undef $perlvarref;
1.19 www 5968:
1.35 harris41 5969: # ----------------------------- Make sure this process is running from user=www
5970: my $wwwid=getpwnam('www');
5971: if ($wwwid!=$<) {
1.134 albertel 5972: my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
5973: my $subj="LON: $currenthostid User ID mismatch";
1.37 harris41 5974: system("echo 'User ID mismatch. lond must be run as user www.' |\
1.35 harris41 5975: mailto $emailto -s '$subj' > /dev/null");
5976: exit 1;
5977: }
5978:
1.19 www 5979: # --------------------------------------------- Check if other instance running
5980:
5981: my $pidfile="$perlvar{'lonDaemons'}/logs/lond.pid";
5982:
5983: if (-e $pidfile) {
5984: my $lfh=IO::File->new("$pidfile");
5985: my $pide=<$lfh>;
5986: chomp($pide);
1.29 harris41 5987: if (kill 0 => $pide) { die "already running"; }
1.19 www 5988: }
1.1 albertel 5989:
5990: # ------------------------------------------------------------- Read hosts file
5991:
5992:
5993:
5994: # establish SERVER socket, bind and listen.
5995: $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},
5996: Type => SOCK_STREAM,
5997: Proto => 'tcp',
5998: Reuse => 1,
5999: Listen => 10 )
1.29 harris41 6000: or die "making socket: $@\n";
1.1 albertel 6001:
6002: # --------------------------------------------------------- Do global variables
6003:
6004: # global variables
6005:
1.134 albertel 6006: my %children = (); # keys are current child process IDs
1.1 albertel 6007:
6008: sub REAPER { # takes care of dead children
6009: $SIG{CHLD} = \&REAPER;
1.165 albertel 6010: &status("Handling child death");
1.178 foxr 6011: my $pid;
6012: do {
6013: $pid = waitpid(-1,&WNOHANG());
6014: if (defined($children{$pid})) {
6015: &logthis("Child $pid died");
6016: delete($children{$pid});
1.183 albertel 6017: } elsif ($pid > 0) {
1.178 foxr 6018: &logthis("Unknown Child $pid died");
6019: }
6020: } while ( $pid > 0 );
6021: foreach my $child (keys(%children)) {
6022: $pid = waitpid($child,&WNOHANG());
6023: if ($pid > 0) {
6024: &logthis("Child $child - $pid looks like we missed it's death");
6025: delete($children{$pid});
6026: }
1.176 albertel 6027: }
1.165 albertel 6028: &status("Finished Handling child death");
1.1 albertel 6029: }
6030:
6031: sub HUNTSMAN { # signal handler for SIGINT
1.165 albertel 6032: &status("Killing children (INT)");
1.1 albertel 6033: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
6034: kill 'INT' => keys %children;
1.59 www 6035: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.1 albertel 6036: my $execdir=$perlvar{'lonDaemons'};
6037: unlink("$execdir/logs/lond.pid");
1.190 albertel 6038: &logthis("<font color='red'>CRITICAL: Shutting down</font>");
1.165 albertel 6039: &status("Done killing children");
1.1 albertel 6040: exit; # clean up with dignity
6041: }
6042:
6043: sub HUPSMAN { # signal handler for SIGHUP
6044: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
1.165 albertel 6045: &status("Killing children for restart (HUP)");
1.1 albertel 6046: kill 'INT' => keys %children;
1.59 www 6047: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.190 albertel 6048: &logthis("<font color='red'>CRITICAL: Restarting</font>");
1.134 albertel 6049: my $execdir=$perlvar{'lonDaemons'};
1.30 harris41 6050: unlink("$execdir/logs/lond.pid");
1.165 albertel 6051: &status("Restarting self (HUP)");
1.1 albertel 6052: exec("$execdir/lond"); # here we go again
6053: }
6054:
1.144 foxr 6055: #
1.148 foxr 6056: # Reload the Apache daemon's state.
1.150 foxr 6057: # This is done by invoking /home/httpd/perl/apachereload
6058: # a setuid perl script that can be root for us to do this job.
1.148 foxr 6059: #
6060: sub ReloadApache {
1.150 foxr 6061: my $execdir = $perlvar{'lonDaemons'};
6062: my $script = $execdir."/apachereload";
6063: system($script);
1.148 foxr 6064: }
6065:
6066: #
1.144 foxr 6067: # Called in response to a USR2 signal.
6068: # - Reread hosts.tab
6069: # - All children connected to hosts that were removed from hosts.tab
6070: # are killed via SIGINT
6071: # - All children connected to previously existing hosts are sent SIGUSR1
6072: # - Our internal hosts hash is updated to reflect the new contents of
6073: # hosts.tab causing connections from hosts added to hosts.tab to
6074: # now be honored.
6075: #
6076: sub UpdateHosts {
1.165 albertel 6077: &status("Reload hosts.tab");
1.147 foxr 6078: logthis('<font color="blue"> Updating connections </font>');
1.148 foxr 6079: #
6080: # The %children hash has the set of IP's we currently have children
6081: # on. These need to be matched against records in the hosts.tab
6082: # Any ip's no longer in the table get killed off they correspond to
6083: # either dropped or changed hosts. Note that the re-read of the table
6084: # will take care of new and changed hosts as connections come into being.
6085:
1.371 albertel 6086: &Apache::lonnet::reset_hosts_info();
1.148 foxr 6087:
1.368 albertel 6088: foreach my $child (keys(%children)) {
1.148 foxr 6089: my $childip = $children{$child};
1.374 albertel 6090: if ($childip ne '127.0.0.1'
6091: && !defined(&Apache::lonnet::get_hosts_from_ip($childip))) {
1.149 foxr 6092: logthis('<font color="blue"> UpdateHosts killing child '
6093: ." $child for ip $childip </font>");
1.148 foxr 6094: kill('INT', $child);
1.149 foxr 6095: } else {
6096: logthis('<font color="green"> keeping child for ip '
6097: ." $childip (pid=$child) </font>");
1.148 foxr 6098: }
6099: }
6100: ReloadApache;
1.165 albertel 6101: &status("Finished reloading hosts.tab");
1.144 foxr 6102: }
6103:
1.148 foxr 6104:
1.57 www 6105: sub checkchildren {
1.165 albertel 6106: &status("Checking on the children (sending signals)");
1.57 www 6107: &initnewstatus();
6108: &logstatus();
6109: &logthis('Going to check on the children');
1.134 albertel 6110: my $docdir=$perlvar{'lonDocRoot'};
1.61 harris41 6111: foreach (sort keys %children) {
1.221 albertel 6112: #sleep 1;
1.57 www 6113: unless (kill 'USR1' => $_) {
6114: &logthis ('Child '.$_.' is dead');
6115: &logstatus($$.' is dead');
1.221 albertel 6116: delete($children{$_});
1.57 www 6117: }
1.61 harris41 6118: }
1.63 www 6119: sleep 5;
1.212 foxr 6120: $SIG{ALRM} = sub { Debug("timeout");
6121: die "timeout"; };
1.113 albertel 6122: $SIG{__DIE__} = 'DEFAULT';
1.165 albertel 6123: &status("Checking on the children (waiting for reports)");
1.63 www 6124: foreach (sort keys %children) {
6125: unless (-e "$docdir/lon-status/londchld/$_.txt") {
1.113 albertel 6126: eval {
6127: alarm(300);
1.63 www 6128: &logthis('Child '.$_.' did not respond');
1.67 albertel 6129: kill 9 => $_;
1.131 albertel 6130: #$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
6131: #$subj="LON: $currenthostid killed lond process $_";
6132: #my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null`;
6133: #$execdir=$perlvar{'lonDaemons'};
6134: #$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_`;
1.221 albertel 6135: delete($children{$_});
1.113 albertel 6136: alarm(0);
6137: }
1.63 www 6138: }
6139: }
1.113 albertel 6140: $SIG{ALRM} = 'DEFAULT';
1.155 albertel 6141: $SIG{__DIE__} = \&catchexception;
1.165 albertel 6142: &status("Finished checking children");
1.221 albertel 6143: &logthis('Finished Checking children');
1.57 www 6144: }
6145:
1.1 albertel 6146: # --------------------------------------------------------------------- Logging
6147:
6148: sub logthis {
6149: my $message=shift;
6150: my $execdir=$perlvar{'lonDaemons'};
6151: my $fh=IO::File->new(">>$execdir/logs/lond.log");
6152: my $now=time;
6153: my $local=localtime($now);
1.58 www 6154: $lastlog=$local.': '.$message;
1.1 albertel 6155: print $fh "$local ($$): $message\n";
6156: }
6157:
1.77 foxr 6158: # ------------------------- Conditional log if $DEBUG true.
6159: sub Debug {
6160: my $message = shift;
6161: if($DEBUG) {
6162: &logthis($message);
6163: }
6164: }
1.161 foxr 6165:
6166: #
6167: # Sub to do replies to client.. this gives a hook for some
6168: # debug tracing too:
6169: # Parameters:
6170: # fd - File open on client.
6171: # reply - Text to send to client.
6172: # request - Original request from client.
6173: #
6174: sub Reply {
1.192 foxr 6175: my ($fd, $reply, $request) = @_;
1.387 albertel 6176: if (ref($reply)) {
6177: print $fd $$reply;
6178: print $fd "\n";
6179: if ($DEBUG) { Debug("Request was $request Reply was $$reply"); }
6180: } else {
6181: print $fd $reply;
6182: if ($DEBUG) { Debug("Request was $request Reply was $reply"); }
6183: }
1.212 foxr 6184: $Transactions++;
6185: }
6186:
6187:
6188: #
6189: # Sub to report a failure.
6190: # This function:
6191: # - Increments the failure statistic counters.
6192: # - Invokes Reply to send the error message to the client.
6193: # Parameters:
6194: # fd - File descriptor open on the client
6195: # reply - Reply text to emit.
6196: # request - The original request message (used by Reply
6197: # to debug if that's enabled.
6198: # Implicit outputs:
6199: # $Failures- The number of failures is incremented.
6200: # Reply (invoked here) sends a message to the
6201: # client:
6202: #
6203: sub Failure {
6204: my $fd = shift;
6205: my $reply = shift;
6206: my $request = shift;
6207:
6208: $Failures++;
6209: Reply($fd, $reply, $request); # That's simple eh?
1.161 foxr 6210: }
1.57 www 6211: # ------------------------------------------------------------------ Log status
6212:
6213: sub logstatus {
1.178 foxr 6214: &status("Doing logging");
6215: my $docdir=$perlvar{'lonDocRoot'};
6216: {
6217: my $fh=IO::File->new(">$docdir/lon-status/londchld/$$.txt");
1.200 matthew 6218: print $fh $status."\n".$lastlog."\n".time."\n$keymode";
1.178 foxr 6219: $fh->close();
6220: }
1.221 albertel 6221: &status("Finished $$.txt");
6222: {
6223: open(LOG,">>$docdir/lon-status/londstatus.txt");
6224: flock(LOG,LOCK_EX);
6225: print LOG $$."\t".$clientname."\t".$currenthostid."\t"
6226: .$status."\t".$lastlog."\t $keymode\n";
1.275 albertel 6227: flock(LOG,LOCK_UN);
1.221 albertel 6228: close(LOG);
6229: }
1.178 foxr 6230: &status("Finished logging");
1.57 www 6231: }
6232:
6233: sub initnewstatus {
6234: my $docdir=$perlvar{'lonDocRoot'};
6235: my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt");
6236: my $now=time;
6237: my $local=localtime($now);
6238: print $fh "LOND status $local - parent $$\n\n";
1.64 www 6239: opendir(DIR,"$docdir/lon-status/londchld");
1.134 albertel 6240: while (my $filename=readdir(DIR)) {
1.64 www 6241: unlink("$docdir/lon-status/londchld/$filename");
6242: }
6243: closedir(DIR);
1.57 www 6244: }
6245:
6246: # -------------------------------------------------------------- Status setting
6247:
6248: sub status {
6249: my $what=shift;
6250: my $now=time;
6251: my $local=localtime($now);
1.178 foxr 6252: $status=$local.': '.$what;
6253: $0='lond: '.$what.' '.$local;
1.57 www 6254: }
1.11 www 6255:
1.13 www 6256: # -------------------------------------------------------------- Talk to lonsql
6257:
1.234 foxr 6258: sub sql_reply {
1.12 harris41 6259: my ($cmd)=@_;
1.234 foxr 6260: my $answer=&sub_sql_reply($cmd);
6261: if ($answer eq 'con_lost') { $answer=&sub_sql_reply($cmd); }
1.12 harris41 6262: return $answer;
6263: }
6264:
1.234 foxr 6265: sub sub_sql_reply {
1.12 harris41 6266: my ($cmd)=@_;
6267: my $unixsock="mysqlsock";
6268: my $peerfile="$perlvar{'lonSockDir'}/$unixsock";
6269: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
6270: Type => SOCK_STREAM,
6271: Timeout => 10)
6272: or return "con_lost";
1.319 www 6273: print $sclient "$cmd:$currentdomainid\n";
1.12 harris41 6274: my $answer=<$sclient>;
6275: chomp($answer);
6276: if (!$answer) { $answer="con_lost"; }
6277: return $answer;
6278: }
6279:
1.1 albertel 6280: # --------------------------------------- Is this the home server of an author?
1.11 www 6281:
1.1 albertel 6282: sub ishome {
6283: my $author=shift;
6284: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
6285: my ($udom,$uname)=split(/\//,$author);
6286: my $proname=propath($udom,$uname);
6287: if (-e $proname) {
6288: return 'owner';
6289: } else {
6290: return 'not_owner';
6291: }
6292: }
6293:
6294: # ======================================================= Continue main program
6295: # ---------------------------------------------------- Fork once and dissociate
6296:
1.134 albertel 6297: my $fpid=fork;
1.1 albertel 6298: exit if $fpid;
1.29 harris41 6299: die "Couldn't fork: $!" unless defined ($fpid);
1.1 albertel 6300:
1.29 harris41 6301: POSIX::setsid() or die "Can't start new session: $!";
1.1 albertel 6302:
6303: # ------------------------------------------------------- Write our PID on disk
6304:
1.134 albertel 6305: my $execdir=$perlvar{'lonDaemons'};
1.1 albertel 6306: open (PIDSAVE,">$execdir/logs/lond.pid");
6307: print PIDSAVE "$$\n";
6308: close(PIDSAVE);
1.190 albertel 6309: &logthis("<font color='red'>CRITICAL: ---------- Starting ----------</font>");
1.57 www 6310: &status('Starting');
1.1 albertel 6311:
1.106 foxr 6312:
1.1 albertel 6313:
6314: # ----------------------------------------------------- Install signal handlers
6315:
1.57 www 6316:
1.1 albertel 6317: $SIG{CHLD} = \&REAPER;
6318: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
6319: $SIG{HUP} = \&HUPSMAN;
1.57 www 6320: $SIG{USR1} = \&checkchildren;
1.144 foxr 6321: $SIG{USR2} = \&UpdateHosts;
1.106 foxr 6322:
1.148 foxr 6323: # Read the host hashes:
1.368 albertel 6324: &Apache::lonnet::load_hosts_tab();
1.447 raeburn 6325: my %iphost = &Apache::lonnet::get_iphost(1);
1.106 foxr 6326:
1.286 albertel 6327: my $dist=`$perlvar{'lonDaemons'}/distprobe`;
6328:
1.106 foxr 6329: # --------------------------------------------------------------
6330: # Accept connections. When a connection comes in, it is validated
6331: # and if good, a child process is created to process transactions
6332: # along the connection.
6333:
1.1 albertel 6334: while (1) {
1.165 albertel 6335: &status('Starting accept');
1.106 foxr 6336: $client = $server->accept() or next;
1.165 albertel 6337: &status('Accepted '.$client.' off to spawn');
1.386 albertel 6338: make_new_child($client);
1.165 albertel 6339: &status('Finished spawning');
1.1 albertel 6340: }
6341:
1.212 foxr 6342: sub make_new_child {
6343: my $pid;
6344: # my $cipher; # Now global
6345: my $sigset;
1.178 foxr 6346:
1.212 foxr 6347: $client = shift;
6348: &status('Starting new child '.$client);
6349: &logthis('<font color="green"> Attempting to start child ('.$client.
6350: ")</font>");
6351: # block signal for fork
6352: $sigset = POSIX::SigSet->new(SIGINT);
6353: sigprocmask(SIG_BLOCK, $sigset)
6354: or die "Can't block SIGINT for fork: $!\n";
1.178 foxr 6355:
1.212 foxr 6356: die "fork: $!" unless defined ($pid = fork);
1.178 foxr 6357:
1.212 foxr 6358: $client->sockopt(SO_KEEPALIVE, 1); # Enable monitoring of
6359: # connection liveness.
1.178 foxr 6360:
1.212 foxr 6361: #
6362: # Figure out who we're talking to so we can record the peer in
6363: # the pid hash.
6364: #
6365: my $caller = getpeername($client);
6366: my ($port,$iaddr);
6367: if (defined($caller) && length($caller) > 0) {
6368: ($port,$iaddr)=unpack_sockaddr_in($caller);
6369: } else {
6370: &logthis("Unable to determine who caller was, getpeername returned nothing");
6371: }
6372: if (defined($iaddr)) {
6373: $clientip = inet_ntoa($iaddr);
6374: Debug("Connected with $clientip");
6375: } else {
6376: &logthis("Unable to determine clientip");
6377: $clientip='Unavailable';
6378: }
6379:
6380: if ($pid) {
6381: # Parent records the child's birth and returns.
6382: sigprocmask(SIG_UNBLOCK, $sigset)
6383: or die "Can't unblock SIGINT for fork: $!\n";
6384: $children{$pid} = $clientip;
6385: &status('Started child '.$pid);
6386: return;
6387: } else {
6388: # Child can *not* return from this subroutine.
6389: $SIG{INT} = 'DEFAULT'; # make SIGINT kill us as it did before
6390: $SIG{CHLD} = 'DEFAULT'; #make this default so that pwauth returns
6391: #don't get intercepted
6392: $SIG{USR1}= \&logstatus;
6393: $SIG{ALRM}= \&timeout;
6394: $lastlog='Forked ';
6395: $status='Forked';
1.178 foxr 6396:
1.212 foxr 6397: # unblock signals
6398: sigprocmask(SIG_UNBLOCK, $sigset)
6399: or die "Can't unblock SIGINT for fork: $!\n";
1.178 foxr 6400:
1.212 foxr 6401: # my $tmpsnum=0; # Now global
6402: #---------------------------------------------------- kerberos 5 initialization
6403: &Authen::Krb5::init_context();
1.359 raeburn 6404: unless (($dist eq 'fedora5') || ($dist eq 'fedora4') ||
6405: ($dist eq 'fedora6') || ($dist eq 'suse9.3')) {
1.286 albertel 6406: &Authen::Krb5::init_ets();
6407: }
1.209 albertel 6408:
1.212 foxr 6409: &status('Accepted connection');
6410: # =============================================================================
6411: # do something with the connection
6412: # -----------------------------------------------------------------------------
6413: # see if we know client and 'check' for spoof IP by ineffective challenge
1.178 foxr 6414:
1.278 albertel 6415: my $outsideip=$clientip;
6416: if ($clientip eq '127.0.0.1') {
1.368 albertel 6417: $outsideip=&Apache::lonnet::get_host_ip($perlvar{'lonHostID'});
1.278 albertel 6418: }
1.412 foxr 6419: &ReadManagerTable();
1.368 albertel 6420: my $clientrec=defined(&Apache::lonnet::get_hosts_from_ip($outsideip));
1.278 albertel 6421: my $ismanager=($managers{$outsideip} ne undef);
1.432 raeburn 6422: $clientname = "[unknown]";
1.212 foxr 6423: if($clientrec) { # Establish client type.
6424: $ConnectionType = "client";
1.368 albertel 6425: $clientname = (&Apache::lonnet::get_hosts_from_ip($outsideip))[-1];
1.212 foxr 6426: if($ismanager) {
6427: $ConnectionType = "both";
6428: }
6429: } else {
6430: $ConnectionType = "manager";
1.278 albertel 6431: $clientname = $managers{$outsideip};
1.212 foxr 6432: }
6433: my $clientok;
1.178 foxr 6434:
1.212 foxr 6435: if ($clientrec || $ismanager) {
6436: &status("Waiting for init from $clientip $clientname");
6437: &logthis('<font color="yellow">INFO: Connection, '.
6438: $clientip.
6439: " ($clientname) connection type = $ConnectionType </font>" );
6440: &status("Connecting $clientip ($clientname))");
6441: my $remotereq=<$client>;
6442: chomp($remotereq);
6443: Debug("Got init: $remotereq");
1.337 albertel 6444:
1.212 foxr 6445: if ($remotereq =~ /^init/) {
6446: &sethost("sethost:$perlvar{'lonHostID'}");
6447: #
6448: # If the remote is attempting a local init... give that a try:
6449: #
1.432 raeburn 6450: (my $i, my $inittype, $clientversion) = split(/:/, $remotereq);
1.209 albertel 6451:
1.212 foxr 6452: # If the connection type is ssl, but I didn't get my
6453: # certificate files yet, then I'll drop back to
6454: # insecure (if allowed).
6455:
6456: if($inittype eq "ssl") {
6457: my ($ca, $cert) = lonssl::CertificateFile;
6458: my $kfile = lonssl::KeyFile;
6459: if((!$ca) ||
6460: (!$cert) ||
6461: (!$kfile)) {
6462: $inittype = ""; # This forces insecure attempt.
6463: &logthis("<font color=\"blue\"> Certificates not "
6464: ."installed -- trying insecure auth</font>");
1.224 foxr 6465: } else { # SSL certificates are in place so
1.212 foxr 6466: } # Leave the inittype alone.
6467: }
6468:
6469: if($inittype eq "local") {
1.432 raeburn 6470: $clientversion = $perlvar{'lonVersion'};
1.212 foxr 6471: my $key = LocalConnection($client, $remotereq);
6472: if($key) {
6473: Debug("Got local key $key");
6474: $clientok = 1;
6475: my $cipherkey = pack("H32", $key);
6476: $cipher = new IDEA($cipherkey);
6477: print $client "ok:local\n";
1.442 www 6478: &logthis('<font color="green">'
1.212 foxr 6479: . "Successful local authentication </font>");
6480: $keymode = "local"
1.178 foxr 6481: } else {
1.212 foxr 6482: Debug("Failed to get local key");
6483: $clientok = 0;
6484: shutdown($client, 3);
6485: close $client;
1.178 foxr 6486: }
1.212 foxr 6487: } elsif ($inittype eq "ssl") {
6488: my $key = SSLConnection($client);
6489: if ($key) {
6490: $clientok = 1;
6491: my $cipherkey = pack("H32", $key);
6492: $cipher = new IDEA($cipherkey);
6493: &logthis('<font color="green">'
6494: ."Successfull ssl authentication with $clientname </font>");
6495: $keymode = "ssl";
6496:
1.178 foxr 6497: } else {
1.212 foxr 6498: $clientok = 0;
6499: close $client;
1.178 foxr 6500: }
1.212 foxr 6501:
6502: } else {
6503: my $ok = InsecureConnection($client);
6504: if($ok) {
6505: $clientok = 1;
6506: &logthis('<font color="green">'
6507: ."Successful insecure authentication with $clientname </font>");
6508: print $client "ok\n";
6509: $keymode = "insecure";
1.178 foxr 6510: } else {
1.212 foxr 6511: &logthis('<font color="yellow">'
6512: ."Attempted insecure connection disallowed </font>");
6513: close $client;
6514: $clientok = 0;
1.178 foxr 6515:
6516: }
6517: }
1.212 foxr 6518: } else {
6519: &logthis(
6520: "<font color='blue'>WARNING: "
6521: ."$clientip failed to initialize: >$remotereq< </font>");
6522: &status('No init '.$clientip);
6523: }
6524:
6525: } else {
6526: &logthis(
6527: "<font color='blue'>WARNING: Unknown client $clientip</font>");
6528: &status('Hung up on '.$clientip);
6529: }
6530:
6531: if ($clientok) {
6532: # ---------------- New known client connecting, could mean machine online again
1.368 albertel 6533: if (&Apache::lonnet::get_host_ip($currenthostid) ne $clientip
1.367 albertel 6534: && $clientip ne '127.0.0.1') {
1.375 albertel 6535: &Apache::lonnet::reconlonc($clientname);
1.212 foxr 6536: }
6537: &logthis("<font color='green'>Established connection: $clientname</font>");
6538: &status('Will listen to '.$clientname);
6539: # ------------------------------------------------------------ Process requests
6540: my $keep_going = 1;
6541: my $user_input;
1.448 raeburn 6542: my $clienthost = &Apache::lonnet::hostname($clientname);
6543: my $clientserverhomeID = &Apache::lonnet::get_server_homeID($clienthost);
6544: $clienthomedom = &Apache::lonnet::host_domain($clientserverhomeID);
1.212 foxr 6545: while(($user_input = get_request) && $keep_going) {
6546: alarm(120);
6547: Debug("Main: Got $user_input\n");
6548: $keep_going = &process_request($user_input);
1.178 foxr 6549: alarm(0);
1.212 foxr 6550: &status('Listening to '.$clientname." ($keymode)");
1.161 foxr 6551: }
1.212 foxr 6552:
1.59 www 6553: # --------------------------------------------- client unknown or fishy, refuse
1.212 foxr 6554: } else {
1.161 foxr 6555: print $client "refused\n";
6556: $client->close();
1.190 albertel 6557: &logthis("<font color='blue'>WARNING: "
1.161 foxr 6558: ."Rejected client $clientip, closing connection</font>");
6559: }
1.212 foxr 6560: }
1.161 foxr 6561:
1.1 albertel 6562: # =============================================================================
1.161 foxr 6563:
1.190 albertel 6564: &logthis("<font color='red'>CRITICAL: "
1.161 foxr 6565: ."Disconnect from $clientip ($clientname)</font>");
6566:
6567:
6568: # this exit is VERY important, otherwise the child will become
6569: # a producer of more and more children, forking yourself into
6570: # process death.
6571: exit;
1.106 foxr 6572:
1.78 foxr 6573: }
1.261 foxr 6574: #
6575: # Determine if a user is an author for the indicated domain.
6576: #
6577: # Parameters:
6578: # domain - domain to check in .
6579: # user - Name of user to check.
6580: #
6581: # Return:
6582: # 1 - User is an author for domain.
6583: # 0 - User is not an author for domain.
6584: sub is_author {
6585: my ($domain, $user) = @_;
6586:
6587: &Debug("is_author: $user @ $domain");
6588:
6589: my $hashref = &tie_user_hash($domain, $user, "roles",
6590: &GDBM_READER());
6591:
6592: # Author role should show up as a key /domain/_au
1.78 foxr 6593:
1.321 albertel 6594: my $key = "/$domain/_au";
6595: my $value;
6596: if (defined($hashref)) {
6597: $value = $hashref->{$key};
6598: }
1.78 foxr 6599:
1.261 foxr 6600: if(defined($value)) {
6601: &Debug("$user @ $domain is an author");
6602: }
6603:
6604: return defined($value);
6605: }
1.78 foxr 6606: #
6607: # Checks to see if the input roleput request was to set
6608: # an author role. If so, invokes the lchtmldir script to set
6609: # up a correct public_html
6610: # Parameters:
6611: # request - The request sent to the rolesput subchunk.
6612: # We're looking for /domain/_au
6613: # domain - The domain in which the user is having roles doctored.
6614: # user - Name of the user for which the role is being put.
6615: # authtype - The authentication type associated with the user.
6616: #
1.289 albertel 6617: sub manage_permissions {
1.192 foxr 6618: my ($request, $domain, $user, $authtype) = @_;
1.78 foxr 6619:
1.261 foxr 6620: &Debug("manage_permissions: $request $domain $user $authtype");
6621:
1.78 foxr 6622: # See if the request is of the form /$domain/_au
1.289 albertel 6623: if($request =~ /^(\/\Q$domain\E\/_au)$/) { # It's an author rolesput...
1.78 foxr 6624: my $execdir = $perlvar{'lonDaemons'};
6625: my $userhome= "/home/$user" ;
1.134 albertel 6626: &logthis("system $execdir/lchtmldir $userhome $user $authtype");
1.261 foxr 6627: &Debug("Setting homedir permissions for $userhome");
1.78 foxr 6628: system("$execdir/lchtmldir $userhome $user $authtype");
6629: }
6630: }
1.222 foxr 6631:
6632:
6633: #
6634: # Return the full path of a user password file, whether it exists or not.
6635: # Parameters:
6636: # domain - Domain in which the password file lives.
6637: # user - name of the user.
6638: # Returns:
6639: # Full passwd path:
6640: #
6641: sub password_path {
6642: my ($domain, $user) = @_;
1.264 albertel 6643: return &propath($domain, $user).'/passwd';
1.222 foxr 6644: }
6645:
6646: # Password Filename
6647: # Returns the path to a passwd file given domain and user... only if
6648: # it exists.
6649: # Parameters:
6650: # domain - Domain in which to search.
6651: # user - username.
6652: # Returns:
6653: # - If the password file exists returns its path.
6654: # - If the password file does not exist, returns undefined.
6655: #
6656: sub password_filename {
6657: my ($domain, $user) = @_;
6658:
6659: Debug ("PasswordFilename called: dom = $domain user = $user");
6660:
6661: my $path = &password_path($domain, $user);
6662: Debug("PasswordFilename got path: $path");
6663: if(-e $path) {
6664: return $path;
6665: } else {
6666: return undef;
6667: }
6668: }
6669:
6670: #
6671: # Rewrite the contents of the user's passwd file.
6672: # Parameters:
6673: # domain - domain of the user.
6674: # name - User's name.
6675: # contents - New contents of the file.
6676: # Returns:
6677: # 0 - Failed.
6678: # 1 - Success.
6679: #
6680: sub rewrite_password_file {
6681: my ($domain, $user, $contents) = @_;
6682:
6683: my $file = &password_filename($domain, $user);
6684: if (defined $file) {
6685: my $pf = IO::File->new(">$file");
6686: if($pf) {
6687: print $pf "$contents\n";
6688: return 1;
6689: } else {
6690: return 0;
6691: }
6692: } else {
6693: return 0;
6694: }
6695:
6696: }
6697:
1.78 foxr 6698: #
1.222 foxr 6699: # get_auth_type - Determines the authorization type of a user in a domain.
1.78 foxr 6700:
6701: # Returns the authorization type or nouser if there is no such user.
6702: #
1.436 raeburn 6703: sub get_auth_type {
1.192 foxr 6704: my ($domain, $user) = @_;
1.78 foxr 6705:
1.222 foxr 6706: Debug("get_auth_type( $domain, $user ) \n");
1.78 foxr 6707: my $proname = &propath($domain, $user);
6708: my $passwdfile = "$proname/passwd";
6709: if( -e $passwdfile ) {
6710: my $pf = IO::File->new($passwdfile);
6711: my $realpassword = <$pf>;
6712: chomp($realpassword);
1.79 foxr 6713: Debug("Password info = $realpassword\n");
1.78 foxr 6714: my ($authtype, $contentpwd) = split(/:/, $realpassword);
1.79 foxr 6715: Debug("Authtype = $authtype, content = $contentpwd\n");
1.259 raeburn 6716: return "$authtype:$contentpwd";
1.224 foxr 6717: } else {
1.79 foxr 6718: Debug("Returning nouser");
1.78 foxr 6719: return "nouser";
6720: }
1.1 albertel 6721: }
6722:
1.220 foxr 6723: #
6724: # Validate a user given their domain, name and password. This utility
6725: # function is used by both AuthenticateHandler and ChangePasswordHandler
6726: # to validate the login credentials of a user.
6727: # Parameters:
6728: # $domain - The domain being logged into (this is required due to
6729: # the capability for multihomed systems.
6730: # $user - The name of the user being validated.
6731: # $password - The user's propoposed password.
6732: #
6733: # Returns:
6734: # 1 - The domain,user,pasword triplet corresponds to a valid
6735: # user.
6736: # 0 - The domain,user,password triplet is not a valid user.
6737: #
6738: sub validate_user {
1.396 raeburn 6739: my ($domain, $user, $password, $checkdefauth) = @_;
1.220 foxr 6740:
6741: # Why negative ~pi you may well ask? Well this function is about
6742: # authentication, and therefore very important to get right.
6743: # I've initialized the flag that determines whether or not I've
6744: # validated correctly to a value it's not supposed to get.
6745: # At the end of this function. I'll ensure that it's not still that
6746: # value so we don't just wind up returning some accidental value
6747: # as a result of executing an unforseen code path that
1.249 foxr 6748: # did not set $validated. At the end of valid execution paths,
6749: # validated shoule be 1 for success or 0 for failuer.
1.220 foxr 6750:
6751: my $validated = -3.14159;
6752:
6753: # How we authenticate is determined by the type of authentication
6754: # the user has been assigned. If the authentication type is
6755: # "nouser", the user does not exist so we will return 0.
6756:
1.222 foxr 6757: my $contents = &get_auth_type($domain, $user);
1.220 foxr 6758: my ($howpwd, $contentpwd) = split(/:/, $contents);
6759:
6760: my $null = pack("C",0); # Used by kerberos auth types.
6761:
1.395 raeburn 6762: if ($howpwd eq 'nouser') {
1.396 raeburn 6763: if ($checkdefauth) {
6764: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
6765: if ($domdefaults{'auth_def'} eq 'localauth') {
6766: $howpwd = $domdefaults{'auth_def'};
6767: $contentpwd = $domdefaults{'auth_arg_def'};
6768: } elsif ((($domdefaults{'auth_def'} eq 'krb4') ||
6769: ($domdefaults{'auth_def'} eq 'krb5')) &&
6770: ($domdefaults{'auth_arg_def'} ne '')) {
6771: $howpwd = $domdefaults{'auth_def'};
6772: $contentpwd = $domdefaults{'auth_arg_def'};
6773: }
1.395 raeburn 6774: }
6775: }
1.220 foxr 6776: if ($howpwd ne 'nouser') {
6777: if($howpwd eq "internal") { # Encrypted is in local password file.
6778: $validated = (crypt($password, $contentpwd) eq $contentpwd);
6779: }
6780: elsif ($howpwd eq "unix") { # User is a normal unix user.
6781: $contentpwd = (getpwnam($user))[1];
6782: if($contentpwd) {
6783: if($contentpwd eq 'x') { # Shadow password file...
6784: my $pwauth_path = "/usr/local/sbin/pwauth";
6785: open PWAUTH, "|$pwauth_path" or
6786: die "Cannot invoke authentication";
6787: print PWAUTH "$user\n$password\n";
6788: close PWAUTH;
6789: $validated = ! $?;
6790:
6791: } else { # Passwords in /etc/passwd.
6792: $validated = (crypt($password,
6793: $contentpwd) eq $contentpwd);
6794: }
6795: } else {
6796: $validated = 0;
6797: }
1.439 raeburn 6798: } elsif ($howpwd eq "krb4") { # user is in kerberos 4 auth. domain.
6799: my $checkwithkrb5 = 0;
6800: if ($dist =~/^fedora(\d+)$/) {
6801: if ($1 > 11) {
6802: $checkwithkrb5 = 1;
6803: }
6804: } elsif ($dist =~ /^suse([\d.]+)$/) {
6805: if ($1 > 11.1) {
6806: $checkwithkrb5 = 1;
6807: }
6808: }
6809: if ($checkwithkrb5) {
6810: $validated = &krb5_authen($password,$null,$user,$contentpwd);
6811: } else {
6812: $validated = &krb4_authen($password,$null,$user,$contentpwd);
6813: }
1.224 foxr 6814: } elsif ($howpwd eq "krb5") { # User is in kerberos 5 auth. domain.
1.439 raeburn 6815: $validated = &krb5_authen($password,$null,$user,$contentpwd);
1.224 foxr 6816: } elsif ($howpwd eq "localauth") {
1.220 foxr 6817: # Authenticate via installation specific authentcation method:
6818: $validated = &localauth::localauth($user,
6819: $password,
1.353 albertel 6820: $contentpwd,
6821: $domain);
1.358 albertel 6822: if ($validated < 0) {
1.357 albertel 6823: &logthis("localauth for $contentpwd $user:$domain returned a $validated");
6824: $validated = 0;
6825: }
1.224 foxr 6826: } else { # Unrecognized auth is also bad.
1.220 foxr 6827: $validated = 0;
6828: }
6829: } else {
6830: $validated = 0;
6831: }
6832: #
6833: # $validated has the correct stat of the authentication:
6834: #
6835:
6836: unless ($validated != -3.14159) {
1.249 foxr 6837: # I >really really< want to know if this happens.
6838: # since it indicates that user authentication is badly
6839: # broken in some code path.
6840: #
6841: die "ValidateUser - failed to set the value of validated $domain, $user $password";
1.220 foxr 6842: }
6843: return $validated;
6844: }
6845:
1.439 raeburn 6846: sub krb4_authen {
6847: my ($password,$null,$user,$contentpwd) = @_;
6848: my $validated = 0;
6849: if (!($password =~ /$null/) ) { # Null password not allowed.
6850: eval {
6851: require Authen::Krb4;
6852: };
6853: if (!$@) {
6854: my $k4error = &Authen::Krb4::get_pw_in_tkt($user,
6855: "",
6856: $contentpwd,,
6857: 'krbtgt',
6858: $contentpwd,
6859: 1,
6860: $password);
6861: if(!$k4error) {
6862: $validated = 1;
6863: } else {
6864: $validated = 0;
6865: &logthis('krb4: '.$user.', '.$contentpwd.', '.
6866: &Authen::Krb4::get_err_txt($Authen::Krb4::error));
6867: }
6868: } else {
6869: $validated = krb5_authen($password,$null,$user,$contentpwd);
6870: }
6871: }
6872: return $validated;
6873: }
6874:
6875: sub krb5_authen {
6876: my ($password,$null,$user,$contentpwd) = @_;
6877: my $validated = 0;
6878: if(!($password =~ /$null/)) { # Null password not allowed.
6879: my $krbclient = &Authen::Krb5::parse_name($user.'@'
6880: .$contentpwd);
6881: my $krbservice = "krbtgt/".$contentpwd."\@".$contentpwd;
6882: my $krbserver = &Authen::Krb5::parse_name($krbservice);
6883: my $credentials= &Authen::Krb5::cc_default();
6884: $credentials->initialize(&Authen::Krb5::parse_name($user.'@'
6885: .$contentpwd));
6886: my $krbreturn;
6887: if (exists(&Authen::Krb5::get_init_creds_password)) {
6888: $krbreturn =
6889: &Authen::Krb5::get_init_creds_password($krbclient,$password,
6890: $krbservice);
6891: $validated = (ref($krbreturn) eq 'Authen::Krb5::Creds');
6892: } else {
6893: $krbreturn =
6894: &Authen::Krb5::get_in_tkt_with_password($krbclient,$krbserver,
6895: $password,$credentials);
6896: $validated = ($krbreturn == 1);
6897: }
6898: if (!$validated) {
6899: &logthis('krb5: '.$user.', '.$contentpwd.', '.
6900: &Authen::Krb5::error());
6901: }
6902: }
6903: return $validated;
6904: }
1.220 foxr 6905:
1.84 albertel 6906: sub addline {
6907: my ($fname,$hostid,$ip,$newline)=@_;
6908: my $contents;
6909: my $found=0;
1.355 albertel 6910: my $expr='^'.quotemeta($hostid).':'.quotemeta($ip).':';
1.134 albertel 6911: my $sh;
1.84 albertel 6912: if ($sh=IO::File->new("$fname.subscription")) {
6913: while (my $subline=<$sh>) {
6914: if ($subline !~ /$expr/) {$contents.= $subline;} else {$found=1;}
6915: }
6916: $sh->close();
6917: }
6918: $sh=IO::File->new(">$fname.subscription");
6919: if ($contents) { print $sh $contents; }
6920: if ($newline) { print $sh $newline; }
6921: $sh->close();
6922: return $found;
1.86 www 6923: }
6924:
1.234 foxr 6925: sub get_chat {
1.324 raeburn 6926: my ($cdom,$cname,$udom,$uname,$group)=@_;
1.310 albertel 6927:
1.87 www 6928: my @entries=();
1.324 raeburn 6929: my $namespace = 'nohist_chatroom';
6930: my $namespace_inroom = 'nohist_inchatroom';
1.335 albertel 6931: if ($group ne '') {
1.324 raeburn 6932: $namespace .= '_'.$group;
6933: $namespace_inroom .= '_'.$group;
6934: }
6935: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 6936: &GDBM_READER());
6937: if ($hashref) {
6938: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.311 albertel 6939: &untie_user_hash($hashref);
1.123 www 6940: }
1.124 www 6941: my @participants=();
1.134 albertel 6942: my $cutoff=time-60;
1.324 raeburn 6943: $hashref = &tie_user_hash($cdom, $cname, $namespace_inroom,
1.310 albertel 6944: &GDBM_WRCREAT());
6945: if ($hashref) {
6946: $hashref->{$uname.':'.$udom}=time;
6947: foreach my $user (sort(keys(%$hashref))) {
6948: if ($hashref->{$user}>$cutoff) {
6949: push(@participants, 'active_participant:'.$user);
1.123 www 6950: }
6951: }
1.311 albertel 6952: &untie_user_hash($hashref);
1.86 www 6953: }
1.124 www 6954: return (@participants,@entries);
1.86 www 6955: }
6956:
1.234 foxr 6957: sub chat_add {
1.324 raeburn 6958: my ($cdom,$cname,$newchat,$group)=@_;
1.88 albertel 6959: my @entries=();
1.142 www 6960: my $time=time;
1.324 raeburn 6961: my $namespace = 'nohist_chatroom';
6962: my $logfile = 'chatroom.log';
1.335 albertel 6963: if ($group ne '') {
1.324 raeburn 6964: $namespace .= '_'.$group;
6965: $logfile = 'chatroom_'.$group.'.log';
6966: }
6967: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 6968: &GDBM_WRCREAT());
6969: if ($hashref) {
6970: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.88 albertel 6971: my ($lastid)=($entries[$#entries]=~/^(\w+)\:/);
6972: my ($thentime,$idnum)=split(/\_/,$lastid);
6973: my $newid=$time.'_000000';
6974: if ($thentime==$time) {
6975: $idnum=~s/^0+//;
6976: $idnum++;
6977: $idnum=substr('000000'.$idnum,-6,6);
6978: $newid=$time.'_'.$idnum;
6979: }
1.310 albertel 6980: $hashref->{$newid}=$newchat;
1.88 albertel 6981: my $expired=$time-3600;
1.310 albertel 6982: foreach my $comment (keys(%$hashref)) {
6983: my ($thistime) = ($comment=~/(\d+)\_/);
1.88 albertel 6984: if ($thistime<$expired) {
1.310 albertel 6985: delete $hashref->{$comment};
1.88 albertel 6986: }
6987: }
1.310 albertel 6988: {
6989: my $proname=&propath($cdom,$cname);
1.324 raeburn 6990: if (open(CHATLOG,">>$proname/$logfile")) {
1.310 albertel 6991: print CHATLOG ("$time:".&unescape($newchat)."\n");
6992: }
6993: close(CHATLOG);
1.142 www 6994: }
1.311 albertel 6995: &untie_user_hash($hashref);
1.86 www 6996: }
1.84 albertel 6997: }
6998:
6999: sub unsub {
7000: my ($fname,$clientip)=@_;
7001: my $result;
1.188 foxr 7002: my $unsubs = 0; # Number of successful unsubscribes:
7003:
7004:
7005: # An old way subscriptions were handled was to have a
7006: # subscription marker file:
7007:
7008: Debug("Attempting unlink of $fname.$clientname");
1.161 foxr 7009: if (unlink("$fname.$clientname")) {
1.188 foxr 7010: $unsubs++; # Successful unsub via marker file.
7011: }
7012:
7013: # The more modern way to do it is to have a subscription list
7014: # file:
7015:
1.84 albertel 7016: if (-e "$fname.subscription") {
1.161 foxr 7017: my $found=&addline($fname,$clientname,$clientip,'');
1.188 foxr 7018: if ($found) {
7019: $unsubs++;
7020: }
7021: }
7022:
7023: # If either or both of these mechanisms succeeded in unsubscribing a
7024: # resource we can return ok:
7025:
7026: if($unsubs) {
7027: $result = "ok\n";
1.84 albertel 7028: } else {
1.188 foxr 7029: $result = "not_subscribed\n";
1.84 albertel 7030: }
1.188 foxr 7031:
1.84 albertel 7032: return $result;
7033: }
7034:
1.101 www 7035: sub currentversion {
7036: my $fname=shift;
7037: my $version=-1;
7038: my $ulsdir='';
7039: if ($fname=~/^(.+)\/[^\/]+$/) {
7040: $ulsdir=$1;
7041: }
1.114 albertel 7042: my ($fnamere1,$fnamere2);
7043: # remove version if already specified
1.101 www 7044: $fname=~s/\.\d+\.(\w+(?:\.meta)*)$/\.$1/;
1.114 albertel 7045: # get the bits that go before and after the version number
7046: if ( $fname=~/^(.*\.)(\w+(?:\.meta)*)$/ ) {
7047: $fnamere1=$1;
7048: $fnamere2='.'.$2;
7049: }
1.101 www 7050: if (-e $fname) { $version=1; }
7051: if (-e $ulsdir) {
1.134 albertel 7052: if(-d $ulsdir) {
7053: if (opendir(LSDIR,$ulsdir)) {
7054: my $ulsfn;
7055: while ($ulsfn=readdir(LSDIR)) {
1.101 www 7056: # see if this is a regular file (ignore links produced earlier)
1.134 albertel 7057: my $thisfile=$ulsdir.'/'.$ulsfn;
7058: unless (-l $thisfile) {
1.160 www 7059: if ($thisfile=~/\Q$fnamere1\E(\d+)\Q$fnamere2\E$/) {
1.134 albertel 7060: if ($1>$version) { $version=$1; }
7061: }
7062: }
7063: }
7064: closedir(LSDIR);
7065: $version++;
7066: }
7067: }
7068: }
7069: return $version;
1.101 www 7070: }
7071:
7072: sub thisversion {
7073: my $fname=shift;
7074: my $version=-1;
7075: if ($fname=~/\.(\d+)\.\w+(?:\.meta)*$/) {
7076: $version=$1;
7077: }
7078: return $version;
7079: }
7080:
1.84 albertel 7081: sub subscribe {
7082: my ($userinput,$clientip)=@_;
7083: my $result;
1.293 albertel 7084: my ($cmd,$fname)=split(/:/,$userinput,2);
1.84 albertel 7085: my $ownership=&ishome($fname);
7086: if ($ownership eq 'owner') {
1.101 www 7087: # explitly asking for the current version?
7088: unless (-e $fname) {
7089: my $currentversion=¤tversion($fname);
7090: if (&thisversion($fname)==$currentversion) {
7091: if ($fname=~/^(.+)\.\d+\.(\w+(?:\.meta)*)$/) {
7092: my $root=$1;
7093: my $extension=$2;
7094: symlink($root.'.'.$extension,
7095: $root.'.'.$currentversion.'.'.$extension);
1.102 www 7096: unless ($extension=~/\.meta$/) {
7097: symlink($root.'.'.$extension.'.meta',
7098: $root.'.'.$currentversion.'.'.$extension.'.meta');
7099: }
1.101 www 7100: }
7101: }
7102: }
1.84 albertel 7103: if (-e $fname) {
7104: if (-d $fname) {
7105: $result="directory\n";
7106: } else {
1.161 foxr 7107: if (-e "$fname.$clientname") {&unsub($fname,$clientip);}
1.134 albertel 7108: my $now=time;
1.161 foxr 7109: my $found=&addline($fname,$clientname,$clientip,
7110: "$clientname:$clientip:$now\n");
1.84 albertel 7111: if ($found) { $result="$fname\n"; }
7112: # if they were subscribed to only meta data, delete that
7113: # subscription, when you subscribe to a file you also get
7114: # the metadata
7115: unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); }
7116: $fname=~s/\/home\/httpd\/html\/res/raw/;
1.373 albertel 7117: $fname="http://".&Apache::lonnet::hostname($perlvar{'lonHostID'})."/".$fname;
1.84 albertel 7118: $result="$fname\n";
7119: }
7120: } else {
7121: $result="not_found\n";
7122: }
7123: } else {
7124: $result="rejected\n";
7125: }
7126: return $result;
7127: }
1.287 foxr 7128: # Change the passwd of a unix user. The caller must have
7129: # first verified that the user is a loncapa user.
7130: #
7131: # Parameters:
7132: # user - Unix user name to change.
7133: # pass - New password for the user.
7134: # Returns:
7135: # ok - if success
7136: # other - Some meaningfule error message string.
7137: # NOTE:
7138: # invokes a setuid script to change the passwd.
7139: sub change_unix_password {
7140: my ($user, $pass) = @_;
7141:
7142: &Debug("change_unix_password");
7143: my $execdir=$perlvar{'lonDaemons'};
7144: &Debug("Opening lcpasswd pipeline");
7145: my $pf = IO::File->new("|$execdir/lcpasswd > "
7146: ."$perlvar{'lonDaemons'}"
7147: ."/logs/lcpasswd.log");
7148: print $pf "$user\n$pass\n$pass\n";
7149: close $pf;
7150: my $err = $?;
7151: return ($err < @passwderrors) ? $passwderrors[$err] :
7152: "pwchange_falure - unknown error";
7153:
7154:
7155: }
7156:
1.91 albertel 7157:
7158: sub make_passwd_file {
1.98 foxr 7159: my ($uname, $umode,$npass,$passfilename)=@_;
1.390 raeburn 7160: my $result="ok";
1.91 albertel 7161: if ($umode eq 'krb4' or $umode eq 'krb5') {
7162: {
7163: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7164: if ($pf) {
7165: print $pf "$umode:$npass\n";
7166: } else {
7167: $result = "pass_file_failed_error";
7168: }
1.91 albertel 7169: }
7170: } elsif ($umode eq 'internal') {
7171: my $salt=time;
7172: $salt=substr($salt,6,2);
7173: my $ncpass=crypt($npass,$salt);
7174: {
7175: &Debug("Creating internal auth");
7176: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7177: if($pf) {
7178: print $pf "internal:$ncpass\n";
7179: } else {
7180: $result = "pass_file_failed_error";
7181: }
1.91 albertel 7182: }
7183: } elsif ($umode eq 'localauth') {
7184: {
7185: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7186: if($pf) {
7187: print $pf "localauth:$npass\n";
7188: } else {
7189: $result = "pass_file_failed_error";
7190: }
1.91 albertel 7191: }
7192: } elsif ($umode eq 'unix') {
7193: {
1.186 foxr 7194: #
7195: # Don't allow the creation of privileged accounts!!! that would
7196: # be real bad!!!
7197: #
7198: my $uid = getpwnam($uname);
7199: if((defined $uid) && ($uid == 0)) {
7200: &logthis(">>>Attempted to create privilged account blocked");
7201: return "no_priv_account_error\n";
7202: }
7203:
1.223 foxr 7204: my $execpath ="$perlvar{'lonDaemons'}/"."lcuseradd";
1.224 foxr 7205:
7206: my $lc_error_file = $execdir."/tmp/lcuseradd".$$.".status";
1.91 albertel 7207: {
7208: &Debug("Executing external: ".$execpath);
1.98 foxr 7209: &Debug("user = ".$uname.", Password =". $npass);
1.132 matthew 7210: my $se = IO::File->new("|$execpath > $perlvar{'lonDaemons'}/logs/lcuseradd.log");
1.91 albertel 7211: print $se "$uname\n";
7212: print $se "$npass\n";
7213: print $se "$npass\n";
1.223 foxr 7214: print $se "$lc_error_file\n"; # Status -> unique file.
1.97 foxr 7215: }
1.285 foxr 7216: if (-r $lc_error_file) {
7217: &Debug("Opening error file: $lc_error_file");
7218: my $error = IO::File->new("< $lc_error_file");
7219: my $useraddok = <$error>;
7220: $error->close;
7221: unlink($lc_error_file);
7222:
7223: chomp $useraddok;
7224:
7225: if($useraddok > 0) {
7226: my $error_text = &lcuseraddstrerror($useraddok);
7227: &logthis("Failed lcuseradd: $error_text");
1.390 raeburn 7228: $result = "lcuseradd_failed:$error_text";
1.285 foxr 7229: } else {
7230: my $pf = IO::File->new(">$passfilename");
7231: if($pf) {
7232: print $pf "unix:\n";
7233: } else {
7234: $result = "pass_file_failed_error";
7235: }
7236: }
1.224 foxr 7237: } else {
1.285 foxr 7238: &Debug("Could not locate lcuseradd error: $lc_error_file");
7239: $result="bug_lcuseradd_no_output_file";
1.91 albertel 7240: }
7241: }
7242: } elsif ($umode eq 'none') {
7243: {
1.223 foxr 7244: my $pf = IO::File->new("> $passfilename");
1.261 foxr 7245: if($pf) {
7246: print $pf "none:\n";
7247: } else {
7248: $result = "pass_file_failed_error";
7249: }
1.91 albertel 7250: }
7251: } else {
1.390 raeburn 7252: $result="auth_mode_error";
1.91 albertel 7253: }
7254: return $result;
1.121 albertel 7255: }
7256:
1.265 albertel 7257: sub convert_photo {
7258: my ($start,$dest)=@_;
7259: system("convert $start $dest");
7260: }
7261:
1.121 albertel 7262: sub sethost {
7263: my ($remotereq) = @_;
7264: my (undef,$hostid)=split(/:/,$remotereq);
1.322 albertel 7265: # ignore sethost if we are already correct
7266: if ($hostid eq $currenthostid) {
7267: return 'ok';
7268: }
7269:
1.121 albertel 7270: if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; }
1.368 albertel 7271: if (&Apache::lonnet::get_host_ip($perlvar{'lonHostID'})
7272: eq &Apache::lonnet::get_host_ip($hostid)) {
1.200 matthew 7273: $currenthostid =$hostid;
1.369 albertel 7274: $currentdomainid=&Apache::lonnet::host_domain($hostid);
1.443 www 7275: # &logthis("Setting hostid to $hostid, and domain to $currentdomainid");
1.121 albertel 7276: } else {
7277: &logthis("Requested host id $hostid not an alias of ".
7278: $perlvar{'lonHostID'}." refusing connection");
7279: return 'unable_to_set';
7280: }
7281: return 'ok';
7282: }
7283:
7284: sub version {
7285: my ($userinput)=@_;
7286: $remoteVERSION=(split(/:/,$userinput))[1];
7287: return "version:$VERSION";
1.127 albertel 7288: }
1.178 foxr 7289:
1.447 raeburn 7290: sub get_usersession_config {
7291: my ($dom,$name) = @_;
7292: my ($usersessionconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
7293: if (defined($cached)) {
7294: return $usersessionconf;
7295: } else {
7296: my %domconfig = &Apache::lonnet::get_dom('configuration',['usersessions'],$dom);
7297: if (ref($domconfig{'usersessions'}) eq 'HASH') {
7298: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'usersessions'},3600);
7299: return $domconfig{'usersessions'};
7300: }
7301: }
7302: return;
7303: }
1.200 matthew 7304:
1.450 raeburn 7305: sub get_courseinfo_hash {
7306: my ($cnum,$cdom,$home) = @_;
7307: my $hashid = $cdom.':'.$cnum;
7308: my ($courseinfo,$cached)=&Apache::lonnet::is_cached_new('courseinfo',$hashid);
7309: if (defined($cached)) {
7310: return $courseinfo;
7311: } else {
7312: my %info = &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,1,[$home],'.');
7313: if (ref($info{$cdom.'_'.$cnum}) eq 'HASH') {
7314: return &Apache::lonnet::do_cache_new('courseinfo',$hashid,$info{$cdom.'_'.$cnum},600);
7315: }
7316: }
7317: return;
7318: }
7319:
1.61 harris41 7320: # ----------------------------------- POD (plain old documentation, CPAN style)
7321:
7322: =head1 NAME
7323:
7324: lond - "LON Daemon" Server (port "LOND" 5663)
7325:
7326: =head1 SYNOPSIS
7327:
1.74 harris41 7328: Usage: B<lond>
7329:
7330: Should only be run as user=www. This is a command-line script which
7331: is invoked by B<loncron>. There is no expectation that a typical user
7332: will manually start B<lond> from the command-line. (In other words,
7333: DO NOT START B<lond> YOURSELF.)
1.61 harris41 7334:
7335: =head1 DESCRIPTION
7336:
1.74 harris41 7337: There are two characteristics associated with the running of B<lond>,
7338: PROCESS MANAGEMENT (starting, stopping, handling child processes)
7339: and SERVER-SIDE ACTIVITIES (password authentication, user creation,
7340: subscriptions, etc). These are described in two large
7341: sections below.
7342:
7343: B<PROCESS MANAGEMENT>
7344:
1.61 harris41 7345: Preforker - server who forks first. Runs as a daemon. HUPs.
7346: Uses IDEA encryption
7347:
1.74 harris41 7348: B<lond> forks off children processes that correspond to the other servers
7349: in the network. Management of these processes can be done at the
7350: parent process level or the child process level.
7351:
7352: B<logs/lond.log> is the location of log messages.
7353:
7354: The process management is now explained in terms of linux shell commands,
7355: subroutines internal to this code, and signal assignments:
7356:
7357: =over 4
7358:
7359: =item *
7360:
7361: PID is stored in B<logs/lond.pid>
7362:
7363: This is the process id number of the parent B<lond> process.
7364:
7365: =item *
7366:
7367: SIGTERM and SIGINT
7368:
7369: Parent signal assignment:
7370: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
7371:
7372: Child signal assignment:
7373: $SIG{INT} = 'DEFAULT'; (and SIGTERM is DEFAULT also)
7374: (The child dies and a SIGALRM is sent to parent, awaking parent from slumber
7375: to restart a new child.)
7376:
7377: Command-line invocations:
7378: B<kill> B<-s> SIGTERM I<PID>
7379: B<kill> B<-s> SIGINT I<PID>
7380:
7381: Subroutine B<HUNTSMAN>:
7382: This is only invoked for the B<lond> parent I<PID>.
7383: This kills all the children, and then the parent.
7384: The B<lonc.pid> file is cleared.
7385:
7386: =item *
7387:
7388: SIGHUP
7389:
7390: Current bug:
7391: This signal can only be processed the first time
7392: on the parent process. Subsequent SIGHUP signals
7393: have no effect.
7394:
7395: Parent signal assignment:
7396: $SIG{HUP} = \&HUPSMAN;
7397:
7398: Child signal assignment:
7399: none (nothing happens)
7400:
7401: Command-line invocations:
7402: B<kill> B<-s> SIGHUP I<PID>
7403:
7404: Subroutine B<HUPSMAN>:
7405: This is only invoked for the B<lond> parent I<PID>,
7406: This kills all the children, and then the parent.
7407: The B<lond.pid> file is cleared.
7408:
7409: =item *
7410:
7411: SIGUSR1
7412:
7413: Parent signal assignment:
7414: $SIG{USR1} = \&USRMAN;
7415:
7416: Child signal assignment:
7417: $SIG{USR1}= \&logstatus;
7418:
7419: Command-line invocations:
7420: B<kill> B<-s> SIGUSR1 I<PID>
7421:
7422: Subroutine B<USRMAN>:
7423: When invoked for the B<lond> parent I<PID>,
7424: SIGUSR1 is sent to all the children, and the status of
7425: each connection is logged.
1.144 foxr 7426:
7427: =item *
7428:
7429: SIGUSR2
7430:
7431: Parent Signal assignment:
7432: $SIG{USR2} = \&UpdateHosts
7433:
7434: Child signal assignment:
7435: NONE
7436:
1.74 harris41 7437:
7438: =item *
7439:
7440: SIGCHLD
7441:
7442: Parent signal assignment:
7443: $SIG{CHLD} = \&REAPER;
7444:
7445: Child signal assignment:
7446: none
7447:
7448: Command-line invocations:
7449: B<kill> B<-s> SIGCHLD I<PID>
7450:
7451: Subroutine B<REAPER>:
7452: This is only invoked for the B<lond> parent I<PID>.
7453: Information pertaining to the child is removed.
7454: The socket port is cleaned up.
7455:
7456: =back
7457:
7458: B<SERVER-SIDE ACTIVITIES>
7459:
7460: Server-side information can be accepted in an encrypted or non-encrypted
7461: method.
7462:
7463: =over 4
7464:
7465: =item ping
7466:
7467: Query a client in the hosts.tab table; "Are you there?"
7468:
7469: =item pong
7470:
7471: Respond to a ping query.
7472:
7473: =item ekey
7474:
7475: Read in encrypted key, make cipher. Respond with a buildkey.
7476:
7477: =item load
7478:
7479: Respond with CPU load based on a computation upon /proc/loadavg.
7480:
7481: =item currentauth
7482:
7483: Reply with current authentication information (only over an
7484: encrypted channel).
7485:
7486: =item auth
7487:
7488: Only over an encrypted channel, reply as to whether a user's
7489: authentication information can be validated.
7490:
7491: =item passwd
7492:
7493: Allow for a password to be set.
7494:
7495: =item makeuser
7496:
7497: Make a user.
7498:
7499: =item passwd
7500:
7501: Allow for authentication mechanism and password to be changed.
7502:
7503: =item home
1.61 harris41 7504:
1.74 harris41 7505: Respond to a question "are you the home for a given user?"
7506:
7507: =item update
7508:
7509: Update contents of a subscribed resource.
7510:
7511: =item unsubscribe
7512:
7513: The server is unsubscribing from a resource.
7514:
7515: =item subscribe
7516:
7517: The server is subscribing to a resource.
7518:
7519: =item log
7520:
7521: Place in B<logs/lond.log>
7522:
7523: =item put
7524:
7525: stores hash in namespace
7526:
1.230 foxr 7527: =item rolesputy
1.74 harris41 7528:
7529: put a role into a user's environment
7530:
7531: =item get
7532:
7533: returns hash with keys from array
7534: reference filled in from namespace
7535:
7536: =item eget
7537:
7538: returns hash with keys from array
7539: reference filled in from namesp (encrypts the return communication)
7540:
7541: =item rolesget
7542:
7543: get a role from a user's environment
7544:
7545: =item del
7546:
7547: deletes keys out of array from namespace
7548:
7549: =item keys
7550:
7551: returns namespace keys
7552:
7553: =item dump
7554:
7555: dumps the complete (or key matching regexp) namespace into a hash
7556:
7557: =item store
7558:
7559: stores hash permanently
7560: for this url; hashref needs to be given and should be a \%hashname; the
7561: remaining args aren't required and if they aren't passed or are '' they will
7562: be derived from the ENV
7563:
7564: =item restore
7565:
7566: returns a hash for a given url
7567:
7568: =item querysend
7569:
7570: Tells client about the lonsql process that has been launched in response
7571: to a sent query.
7572:
7573: =item queryreply
7574:
7575: Accept information from lonsql and make appropriate storage in temporary
7576: file space.
7577:
7578: =item idput
7579:
7580: Defines usernames as corresponding to IDs. (These "IDs" are unique identifiers
7581: for each student, defined perhaps by the institutional Registrar.)
7582:
7583: =item idget
7584:
7585: Returns usernames corresponding to IDs. (These "IDs" are unique identifiers
7586: for each student, defined perhaps by the institutional Registrar.)
7587:
7588: =item tmpput
7589:
7590: Accept and store information in temporary space.
7591:
7592: =item tmpget
7593:
7594: Send along temporarily stored information.
7595:
7596: =item ls
7597:
7598: List part of a user's directory.
7599:
1.135 foxr 7600: =item pushtable
7601:
7602: Pushes a file in /home/httpd/lonTab directory. Currently limited to:
7603: hosts.tab and domain.tab. The old file is copied to *.tab.backup but
7604: must be restored manually in case of a problem with the new table file.
7605: pushtable requires that the request be encrypted and validated via
7606: ValidateManager. The form of the command is:
7607: enc:pushtable tablename <tablecontents> \n
7608: where pushtable, tablename and <tablecontents> will be encrypted, but \n is a
7609: cleartext newline.
7610:
1.74 harris41 7611: =item Hanging up (exit or init)
7612:
7613: What to do when a client tells the server that they (the client)
7614: are leaving the network.
7615:
7616: =item unknown command
7617:
7618: If B<lond> is sent an unknown command (not in the list above),
7619: it replys to the client "unknown_cmd".
1.135 foxr 7620:
1.74 harris41 7621:
7622: =item UNKNOWN CLIENT
7623:
7624: If the anti-spoofing algorithm cannot verify the client,
7625: the client is rejected (with a "refused" message sent
7626: to the client, and the connection is closed.
7627:
7628: =back
1.61 harris41 7629:
7630: =head1 PREREQUISITES
7631:
7632: IO::Socket
7633: IO::File
7634: Apache::File
7635: POSIX
7636: Crypt::IDEA
7637: LWP::UserAgent()
7638: GDBM_File
7639: Authen::Krb4
1.91 albertel 7640: Authen::Krb5
1.61 harris41 7641:
7642: =head1 COREQUISITES
7643:
7644: =head1 OSNAMES
7645:
7646: linux
7647:
7648: =head1 SCRIPT CATEGORIES
7649:
7650: Server/Process
7651:
7652: =cut
1.409 foxr 7653:
7654:
7655: =pod
7656:
7657: =head1 LOG MESSAGES
7658:
7659: The messages below can be emitted in the lond log. This log is located
7660: in ~httpd/perl/logs/lond.log Many log messages have HTML encapsulation
7661: to provide coloring if examined from inside a web page. Some do not.
7662: Where color is used, the colors are; Red for sometihhng to get excited
7663: about and to follow up on. Yellow for something to keep an eye on to
7664: be sure it does not get worse, Green,and Blue for informational items.
7665:
7666: In the discussions below, sometimes reference is made to ~httpd
7667: when describing file locations. There isn't really an httpd
7668: user, however there is an httpd directory that gets installed in the
7669: place that user home directories go. On linux, this is usually
7670: (always?) /home/httpd.
7671:
7672:
7673: Some messages are colorless. These are usually (not always)
7674: Green/Blue color level messages.
7675:
7676: =over 2
7677:
7678: =item (Red) LocalConnection rejecting non local: <ip> ne 127.0.0.1
7679:
7680: A local connection negotiation was attempted by
7681: a host whose IP address was not 127.0.0.1.
7682: The socket is closed and the child will exit.
7683: lond has three ways to establish an encyrption
7684: key with a client:
7685:
7686: =over 2
7687:
7688: =item local
7689:
7690: The key is written and read from a file.
7691: This is only valid for connections from localhost.
7692:
7693: =item insecure
7694:
7695: The key is generated by the server and
7696: transmitted to the client.
7697:
7698: =item ssl (secure)
7699:
7700: An ssl connection is negotiated with the client,
7701: the key is generated by the server and sent to the
7702: client across this ssl connection before the
7703: ssl connectionis terminated and clear text
7704: transmission resumes.
7705:
7706: =back
7707:
7708: =item (Red) LocalConnection: caller is insane! init = <init> and type = <type>
7709:
7710: The client is local but has not sent an initialization
7711: string that is the literal "init:local" The connection
7712: is closed and the child exits.
7713:
7714: =item Red CRITICAL Can't get key file <error>
7715:
7716: SSL key negotiation is being attempted but the call to
7717: lonssl::KeyFile failed. This usually means that the
7718: configuration file is not correctly defining or protecting
7719: the directories/files lonCertificateDirectory or
7720: lonnetPrivateKey
7721: <error> is a string that describes the reason that
7722: the key file could not be located.
7723:
7724: =item (Red) CRITICAL Can't get certificates <error>
7725:
7726: SSL key negotiation failed because we were not able to retrives our certificate
7727: or the CA's certificate in the call to lonssl::CertificateFile
7728: <error> is the textual reason this failed. Usual reasons:
7729:
7730: =over 2
7731:
7732: =item Apache config file for loncapa incorrect:
7733:
7734: one of the variables
7735: lonCertificateDirectory, lonnetCertificateAuthority, or lonnetCertificate
7736: undefined or incorrect
7737:
7738: =item Permission error:
7739:
7740: The directory pointed to by lonCertificateDirectory is not readable by lond
7741:
7742: =item Permission error:
7743:
7744: Files in the directory pointed to by lonCertificateDirectory are not readable by lond.
7745:
7746: =item Installation error:
7747:
7748: Either the certificate authority file or the certificate have not
7749: been installed in lonCertificateDirectory.
7750:
7751: =item (Red) CRITICAL SSL Socket promotion failed: <err>
7752:
7753: The promotion of the connection from plaintext to SSL failed
7754: <err> is the reason for the failure. There are two
7755: system calls involved in the promotion (one of which failed),
7756: a dup to produce
7757: a second fd on the raw socket over which the encrypted data
7758: will flow and IO::SOcket::SSL->new_from_fd which creates
7759: the SSL connection on the duped fd.
7760:
7761: =item (Blue) WARNING client did not respond to challenge
7762:
7763: This occurs on an insecure (non SSL) connection negotiation request.
7764: lond generates some number from the time, the PID and sends it to
7765: the client. The client must respond by echoing this information back.
7766: If the client does not do so, that's a violation of the challenge
7767: protocols and the connection will be failed.
7768:
7769: =item (Red) No manager table. Nobody can manage!!
7770:
7771: lond has the concept of privileged hosts that
7772: can perform remote management function such
7773: as update the hosts.tab. The manager hosts
7774: are described in the
7775: ~httpd/lonTabs/managers.tab file.
7776: this message is logged if this file is missing.
7777:
7778:
7779: =item (Green) Registering manager <dnsname> as <cluster_name> with <ipaddress>
7780:
7781: Reports the successful parse and registration
7782: of a specific manager.
7783:
7784: =item Green existing host <clustername:dnsname>
7785:
7786: The manager host is already defined in the hosts.tab
7787: the information in that table, rather than the info in the
7788: manager table will be used to determine the manager's ip.
7789:
7790: =item (Red) Unable to craete <filename>
7791:
7792: lond has been asked to create new versions of an administrative
7793: file (by a manager). When this is done, the new file is created
7794: in a temp file and then renamed into place so that there are always
7795: usable administrative files, even if the update fails. This failure
7796: message means that the temp file could not be created.
7797: The update is abandoned, and the old file is available for use.
7798:
7799: =item (Green) CopyFile from <oldname> to <newname> failed
7800:
7801: In an update of administrative files, the copy of the existing file to a
7802: backup file failed. The installation of the new file may still succeed,
7803: but there will not be a back up file to rever to (this should probably
7804: be yellow).
7805:
7806: =item (Green) Pushfile: backed up <oldname> to <newname>
7807:
7808: See above, the backup of the old administrative file succeeded.
7809:
7810: =item (Red) Pushfile: Unable to install <filename> <reason>
7811:
7812: The new administrative file could not be installed. In this case,
7813: the old administrative file is still in use.
7814:
7815: =item (Green) Installed new < filename>.
7816:
7817: The new administrative file was successfullly installed.
7818:
7819: =item (Red) Reinitializing lond pid=<pid>
7820:
7821: The lonc child process <pid> will be sent a USR2
7822: signal.
7823:
7824: =item (Red) Reinitializing self
7825:
7826: We've been asked to re-read our administrative files,and
7827: are doing so.
7828:
7829: =item (Yellow) error:Invalid process identifier <ident>
7830:
7831: A reinit command was received, but the target part of the
7832: command was not valid. It must be either
7833: 'lond' or 'lonc' but was <ident>
7834:
7835: =item (Green) isValideditCommand checking: Command = <command> Key = <key> newline = <newline>
7836:
7837: Checking to see if lond has been handed a valid edit
7838: command. It is possible the edit command is not valid
7839: in that case there are no log messages to indicate that.
7840:
7841: =item Result of password change for <username> pwchange_success
7842:
7843: The password for <username> was
7844: successfully changed.
7845:
7846: =item Unable to open <user> passwd to change password
7847:
7848: Could not rewrite the
7849: internal password file for a user
7850:
7851: =item Result of password change for <user> : <result>
7852:
7853: A unix password change for <user> was attempted
7854: and the pipe returned <result>
7855:
7856: =item LWP GET: <message> for <fname> (<remoteurl>)
7857:
7858: The lightweight process fetch for a resource failed
7859: with <message> the local filename that should
7860: have existed/been created was <fname> the
7861: corresponding URI: <remoteurl> This is emitted in several
7862: places.
7863:
7864: =item Unable to move <transname> to <destname>
7865:
7866: From fetch_user_file_handler - the user file was replicated but could not
7867: be mv'd to its final location.
7868:
7869: =item Looking for <domain> <username>
7870:
7871: From user_has_session_handler - This should be a Debug call instead
7872: it indicates lond is about to check whether the specified user has a
7873: session active on the specified domain on the local host.
7874:
7875: =item Client <ip> (<name>) hanging up: <input>
7876:
7877: lond has been asked to exit by its client. The <ip> and <name> identify the
7878: client systemand <input> is the full exit command sent to the server.
7879:
7880: =item Red CRITICAL: ABNORMAL EXIT. child <pid> for server <hostname> died through a crass with this error->[<message>].
7881:
7882: A lond child terminated. NOte that this termination can also occur when the
7883: child receives the QUIT or DIE signals. <pid> is the process id of the child,
7884: <hostname> the host lond is working for, and <message> the reason the child died
7885: to the best of our ability to get it (I would guess that any numeric value
7886: represents and errno value). This is immediately followed by
7887:
7888: =item Famous last words: Catching exception - <log>
7889:
7890: Where log is some recent information about the state of the child.
7891:
7892: =item Red CRITICAL: TIME OUT <pid>
7893:
7894: Some timeout occured for server <pid>. THis is normally a timeout on an LWP
7895: doing an HTTP::GET.
7896:
7897: =item child <pid> died
7898:
7899: The reaper caught a SIGCHILD for the lond child process <pid>
7900: This should be modified to also display the IP of the dying child
7901: $children{$pid}
7902:
7903: =item Unknown child 0 died
7904: A child died but the wait for it returned a pid of zero which really should not
7905: ever happen.
7906:
7907: =item Child <which> - <pid> looks like we missed it's death
7908:
7909: When a sigchild is received, the reaper process checks all children to see if they are
7910: alive. If children are dying quite quickly, the lack of signal queuing can mean
7911: that a signal hearalds the death of more than one child. If so this message indicates
7912: which other one died. <which> is the ip of a dead child
7913:
7914: =item Free socket: <shutdownretval>
7915:
7916: The HUNTSMAN sub was called due to a SIGINT in a child process. The socket is being shutdown.
7917: for whatever reason, <shutdownretval> is printed but in fact shutdown() is not documented
7918: to return anything. This is followed by:
7919:
7920: =item Red CRITICAL: Shutting down
7921:
7922: Just prior to exit.
7923:
7924: =item Free socket: <shutdownretval>
7925:
7926: The HUPSMAN sub was called due to a SIGHUP. all children get killsed, and lond execs itself.
7927: This is followed by:
7928:
7929: =item (Red) CRITICAL: Restarting
7930:
7931: lond is about to exec itself to restart.
7932:
7933: =item (Blue) Updating connections
7934:
7935: (In response to a USR2). All the children (except the one for localhost)
7936: are about to be killed, the hosts tab reread, and Apache reloaded via apachereload.
7937:
7938: =item (Blue) UpdateHosts killing child <pid> for ip <ip>
7939:
7940: Due to USR2 as above.
7941:
7942: =item (Green) keeping child for ip <ip> (pid = <pid>)
7943:
7944: In response to USR2 as above, the child indicated is not being restarted because
7945: it's assumed that we'll always need a child for the localhost.
7946:
7947:
7948: =item Going to check on the children
7949:
7950: Parent is about to check on the health of the child processes.
7951: Note that this is in response to a USR1 sent to the parent lond.
7952: there may be one or more of the next two messages:
7953:
7954: =item <pid> is dead
7955:
7956: A child that we have in our child hash as alive has evidently died.
7957:
7958: =item Child <pid> did not respond
7959:
7960: In the health check the child <pid> did not update/produce a pid_.txt
7961: file when sent it's USR1 signal. That process is killed with a 9 signal, as it's
7962: assumed to be hung in some un-fixable way.
7963:
7964: =item Finished checking children
7965:
7966: Master processs's USR1 processing is cojmplete.
7967:
7968: =item (Red) CRITICAL: ------- Starting ------
7969:
7970: (There are more '-'s on either side). Lond has forked itself off to
7971: form a new session and is about to start actual initialization.
7972:
7973: =item (Green) Attempting to start child (<client>)
7974:
7975: Started a new child process for <client>. Client is IO::Socket object
7976: connected to the child. This was as a result of a TCP/IP connection from a client.
7977:
7978: =item Unable to determine who caller was, getpeername returned nothing
7979:
7980: In child process initialization. either getpeername returned undef or
7981: a zero sized object was returned. Processing continues, but in my opinion,
7982: this should be cause for the child to exit.
7983:
7984: =item Unable to determine clientip
7985:
7986: In child process initialization. The peer address from getpeername was not defined.
7987: The client address is stored as "Unavailable" and processing continues.
7988:
7989: =item (Yellow) INFO: Connection <ip> <name> connection type = <type>
7990:
7991: In child initialization. A good connectionw as received from <ip>.
7992:
7993: =over 2
7994:
7995: =item <name>
7996:
7997: is the name of the client from hosts.tab.
7998:
7999: =item <type>
8000:
8001: Is the connection type which is either
8002:
8003: =over 2
8004:
8005: =item manager
8006:
8007: The connection is from a manager node, not in hosts.tab
8008:
8009: =item client
8010:
8011: the connection is from a non-manager in the hosts.tab
8012:
8013: =item both
8014:
8015: The connection is from a manager in the hosts.tab.
8016:
8017: =back
8018:
8019: =back
8020:
8021: =item (Blue) Certificates not installed -- trying insecure auth
8022:
8023: One of the certificate file, key file or
8024: certificate authority file could not be found for a client attempting
8025: SSL connection intiation. COnnection will be attemptied in in-secure mode.
8026: (this would be a system with an up to date lond that has not gotten a
8027: certificate from us).
8028:
8029: =item (Green) Successful local authentication
8030:
8031: A local connection successfully negotiated the encryption key.
8032: In this case the IDEA key is in a file (that is hopefully well protected).
8033:
8034: =item (Green) Successful ssl authentication with <client>
8035:
8036: The client (<client> is the peer's name in hosts.tab), has successfully
8037: negotiated an SSL connection with this child process.
8038:
8039: =item (Green) Successful insecure authentication with <client>
8040:
8041:
8042: The client has successfully negotiated an insecure connection withthe child process.
8043:
8044: =item (Yellow) Attempted insecure connection disallowed
8045:
8046: The client attempted and failed to successfully negotiate a successful insecure
8047: connection. This can happen either because the variable londAllowInsecure is false
8048: or undefined, or becuse the child did not successfully echo back the challenge
8049: string.
8050:
8051:
8052: =back
8053:
1.441 raeburn 8054: =back
8055:
1.409 foxr 8056:
8057: =cut
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