Annotation of loncom/lond, revision 1.473
1.1 albertel 1: #!/usr/bin/perl
2: # The LearningOnline Network
3: # lond "LON Daemon" Server (port "LOND" 5663)
1.60 www 4: #
1.473 ! raeburn 5: # $Id: lond,v 1.472 2011/05/13 02:58:02 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
1.469 foxr 18:
1.60 www 19: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20: # GNU General Public License for more details.
21: #
22: # You should have received a copy of the GNU General Public License
23: # along with LON-CAPA; if not, write to the Free Software
1.178 foxr 24: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
1.60 www 25: #
26: # /home/httpd/html/adm/gpl.txt
27: #
1.161 foxr 28:
29:
1.60 www 30: # http://www.lon-capa.org/
31: #
1.54 harris41 32:
1.134 albertel 33: use strict;
1.80 harris41 34: use lib '/home/httpd/lib/perl/';
1.325 albertel 35: use LONCAPA;
1.80 harris41 36: use LONCAPA::Configuration;
37:
1.1 albertel 38: use IO::Socket;
39: use IO::File;
1.126 albertel 40: #use Apache::File;
1.1 albertel 41: use POSIX;
42: use Crypt::IDEA;
43: use LWP::UserAgent();
1.347 raeburn 44: use Digest::MD5 qw(md5_hex);
1.3 www 45: use GDBM_File;
1.91 albertel 46: use Authen::Krb5;
1.49 albertel 47: use localauth;
1.193 raeburn 48: use localenroll;
1.265 albertel 49: use localstudentphoto;
1.143 foxr 50: use File::Copy;
1.292 albertel 51: use File::Find;
1.200 matthew 52: use LONCAPA::lonlocal;
53: use LONCAPA::lonssl;
1.221 albertel 54: use Fcntl qw(:flock);
1.383 raeburn 55: use Apache::lonnet;
1.472 raeburn 56: use Mail::Send;
1.1 albertel 57:
1.463 foxr 58: my $DEBUG = 0; # Non zero to enable debug log entries.
1.77 foxr 59:
1.57 www 60: my $status='';
61: my $lastlog='';
62:
1.473 ! raeburn 63: my $VERSION='$Revision: 1.472 $'; #' stupid emacs
1.121 albertel 64: my $remoteVERSION;
1.214 foxr 65: my $currenthostid="default";
1.115 albertel 66: my $currentdomainid;
1.134 albertel 67:
68: my $client;
1.200 matthew 69: my $clientip; # IP address of client.
70: my $clientname; # LonCAPA name of client.
1.448 raeburn 71: my $clientversion; # LonCAPA version running on client.
72: my $clienthomedom; # LonCAPA domain of homeID for client.
73: # primary library server.
1.140 foxr 74:
1.134 albertel 75: my $server;
1.200 matthew 76:
77: my $keymode;
1.198 foxr 78:
1.207 foxr 79: my $cipher; # Cipher key negotiated with client
80: my $tmpsnum = 0; # Id of tmpputs.
81:
1.178 foxr 82: #
83: # Connection type is:
84: # client - All client actions are allowed
85: # manager - only management functions allowed.
86: # both - Both management and client actions are allowed
87: #
1.161 foxr 88:
1.178 foxr 89: my $ConnectionType;
1.161 foxr 90:
1.178 foxr 91: my %managers; # Ip -> manager names
1.161 foxr 92:
1.178 foxr 93: my %perlvar; # Will have the apache conf defined perl vars.
1.134 albertel 94:
1.178 foxr 95: #
1.207 foxr 96: # The hash below is used for command dispatching, and is therefore keyed on the request keyword.
97: # Each element of the hash contains a reference to an array that contains:
98: # A reference to a sub that executes the request corresponding to the keyword.
99: # A flag that is true if the request must be encoded to be acceptable.
100: # A mask with bits as follows:
101: # CLIENT_OK - Set when the function is allowed by ordinary clients
102: # MANAGER_OK - Set when the function is allowed to manager clients.
103: #
104: my $CLIENT_OK = 1;
105: my $MANAGER_OK = 2;
106: my %Dispatcher;
107:
108:
109: #
1.178 foxr 110: # The array below are password error strings."
111: #
112: my $lastpwderror = 13; # Largest error number from lcpasswd.
113: my @passwderrors = ("ok",
1.287 foxr 114: "pwchange_failure - lcpasswd must be run as user 'www'",
115: "pwchange_failure - lcpasswd got incorrect number of arguments",
116: "pwchange_failure - lcpasswd did not get the right nubmer of input text lines",
117: "pwchange_failure - lcpasswd too many simultaneous pwd changes in progress",
118: "pwchange_failure - lcpasswd User does not exist.",
119: "pwchange_failure - lcpasswd Incorrect current passwd",
120: "pwchange_failure - lcpasswd Unable to su to root.",
121: "pwchange_failure - lcpasswd Cannot set new passwd.",
122: "pwchange_failure - lcpasswd Username has invalid characters",
123: "pwchange_failure - lcpasswd Invalid characters in password",
124: "pwchange_failure - lcpasswd User already exists",
125: "pwchange_failure - lcpasswd Something went wrong with user addition.",
126: "pwchange_failure - lcpasswd Password mismatch",
127: "pwchange_failure - lcpasswd Error filename is invalid");
1.97 foxr 128:
129:
1.178 foxr 130: # The array below are lcuseradd error strings.:
1.97 foxr 131:
1.178 foxr 132: my $lastadderror = 13;
133: my @adderrors = ("ok",
134: "User ID mismatch, lcuseradd must run as user www",
135: "lcuseradd Incorrect number of command line parameters must be 3",
136: "lcuseradd Incorrect number of stdinput lines, must be 3",
137: "lcuseradd Too many other simultaneous pwd changes in progress",
138: "lcuseradd User does not exist",
139: "lcuseradd Unable to make www member of users's group",
140: "lcuseradd Unable to su to root",
141: "lcuseradd Unable to set password",
1.377 albertel 142: "lcuseradd Username has invalid characters",
1.178 foxr 143: "lcuseradd Password has an invalid character",
144: "lcuseradd User already exists",
145: "lcuseradd Could not add user.",
146: "lcuseradd Password mismatch");
1.97 foxr 147:
1.96 foxr 148:
1.412 foxr 149: # This array are the errors from lcinstallfile:
150:
151: my @installerrors = ("ok",
152: "Initial user id of client not that of www",
153: "Usage error, not enough command line arguments",
154: "Source file name does not exist",
155: "Destination file name does not exist",
156: "Some file operation failed",
157: "Invalid table filename."
158: );
1.207 foxr 159:
160: #
161: # Statistics that are maintained and dislayed in the status line.
162: #
1.212 foxr 163: my $Transactions = 0; # Number of attempted transactions.
164: my $Failures = 0; # Number of transcations failed.
1.207 foxr 165:
166: # ResetStatistics:
167: # Resets the statistics counters:
168: #
169: sub ResetStatistics {
170: $Transactions = 0;
171: $Failures = 0;
172: }
173:
1.200 matthew 174: #------------------------------------------------------------------------
175: #
176: # LocalConnection
177: # Completes the formation of a locally authenticated connection.
178: # This function will ensure that the 'remote' client is really the
179: # local host. If not, the connection is closed, and the function fails.
180: # If so, initcmd is parsed for the name of a file containing the
181: # IDEA session key. The fie is opened, read, deleted and the session
182: # key returned to the caller.
183: #
184: # Parameters:
185: # $Socket - Socket open on client.
186: # $initcmd - The full text of the init command.
187: #
188: # Returns:
189: # IDEA session key on success.
190: # undef on failure.
191: #
192: sub LocalConnection {
193: my ($Socket, $initcmd) = @_;
1.373 albertel 194: Debug("Attempting local connection: $initcmd client: $clientip");
1.277 albertel 195: if($clientip ne "127.0.0.1") {
1.200 matthew 196: &logthis('<font color="red"> LocalConnection rejecting non local: '
1.373 albertel 197: ."$clientip ne 127.0.0.1 </font>");
1.200 matthew 198: close $Socket;
199: return undef;
1.224 foxr 200: } else {
1.200 matthew 201: chomp($initcmd); # Get rid of \n in filename.
202: my ($init, $type, $name) = split(/:/, $initcmd);
203: Debug(" Init command: $init $type $name ");
204:
205: # Require that $init = init, and $type = local: Otherwise
206: # the caller is insane:
207:
208: if(($init ne "init") && ($type ne "local")) {
209: &logthis('<font color = "red"> LocalConnection: caller is insane! '
210: ."init = $init, and type = $type </font>");
211: close($Socket);;
212: return undef;
213:
214: }
215: # Now get the key filename:
216:
217: my $IDEAKey = lonlocal::ReadKeyFile($name);
218: return $IDEAKey;
219: }
220: }
221: #------------------------------------------------------------------------------
222: #
223: # SSLConnection
224: # Completes the formation of an ssh authenticated connection. The
225: # socket is promoted to an ssl socket. If this promotion and the associated
226: # certificate exchange are successful, the IDEA key is generated and sent
227: # to the remote peer via the SSL tunnel. The IDEA key is also returned to
228: # the caller after the SSL tunnel is torn down.
229: #
230: # Parameters:
231: # Name Type Purpose
232: # $Socket IO::Socket::INET Plaintext socket.
233: #
234: # Returns:
235: # IDEA key on success.
236: # undef on failure.
237: #
238: sub SSLConnection {
239: my $Socket = shift;
240:
241: Debug("SSLConnection: ");
242: my $KeyFile = lonssl::KeyFile();
243: if(!$KeyFile) {
244: my $err = lonssl::LastError();
245: &logthis("<font color=\"red\"> CRITICAL"
246: ."Can't get key file $err </font>");
247: return undef;
248: }
249: my ($CACertificate,
250: $Certificate) = lonssl::CertificateFile();
251:
252:
253: # If any of the key, certificate or certificate authority
254: # certificate filenames are not defined, this can't work.
255:
256: if((!$Certificate) || (!$CACertificate)) {
257: my $err = lonssl::LastError();
258: &logthis("<font color=\"red\"> CRITICAL"
259: ."Can't get certificates: $err </font>");
260:
261: return undef;
262: }
263: Debug("Key: $KeyFile CA: $CACertificate Cert: $Certificate");
264:
265: # Indicate to our peer that we can procede with
266: # a transition to ssl authentication:
267:
268: print $Socket "ok:ssl\n";
269:
270: Debug("Approving promotion -> ssl");
271: # And do so:
272:
273: my $SSLSocket = lonssl::PromoteServerSocket($Socket,
274: $CACertificate,
275: $Certificate,
276: $KeyFile);
277: if(! ($SSLSocket) ) { # SSL socket promotion failed.
278: my $err = lonssl::LastError();
279: &logthis("<font color=\"red\"> CRITICAL "
280: ."SSL Socket promotion failed: $err </font>");
281: return undef;
282: }
283: Debug("SSL Promotion successful");
284:
285: #
286: # The only thing we'll use the socket for is to send the IDEA key
287: # to the peer:
288:
289: my $Key = lonlocal::CreateCipherKey();
290: print $SSLSocket "$Key\n";
291:
292: lonssl::Close($SSLSocket);
293:
294: Debug("Key exchange complete: $Key");
295:
296: return $Key;
297: }
298: #
299: # InsecureConnection:
300: # If insecure connections are allowd,
301: # exchange a challenge with the client to 'validate' the
302: # client (not really, but that's the protocol):
303: # We produce a challenge string that's sent to the client.
304: # The client must then echo the challenge verbatim to us.
305: #
306: # Parameter:
307: # Socket - Socket open on the client.
308: # Returns:
309: # 1 - success.
310: # 0 - failure (e.g.mismatch or insecure not allowed).
311: #
312: sub InsecureConnection {
313: my $Socket = shift;
314:
315: # Don't even start if insecure connections are not allowed.
316:
317: if(! $perlvar{londAllowInsecure}) { # Insecure connections not allowed.
318: return 0;
319: }
320:
321: # Fabricate a challenge string and send it..
322:
323: my $challenge = "$$".time; # pid + time.
324: print $Socket "$challenge\n";
325: &status("Waiting for challenge reply");
326:
327: my $answer = <$Socket>;
328: $answer =~s/\W//g;
329: if($challenge eq $answer) {
330: return 1;
1.224 foxr 331: } else {
1.200 matthew 332: logthis("<font color='blue'>WARNING client did not respond to challenge</font>");
333: &status("No challenge reqply");
334: return 0;
335: }
336:
337:
338: }
1.251 foxr 339: #
340: # Safely execute a command (as long as it's not a shel command and doesn
341: # not require/rely on shell escapes. The function operates by doing a
342: # a pipe based fork and capturing stdout and stderr from the pipe.
343: #
344: # Formal Parameters:
345: # $line - A line of text to be executed as a command.
346: # Returns:
347: # The output from that command. If the output is multiline the caller
348: # must know how to split up the output.
349: #
350: #
351: sub execute_command {
352: my ($line) = @_;
353: my @words = split(/\s/, $line); # Bust the command up into words.
354: my $output = "";
355:
356: my $pid = open(CHILD, "-|");
357:
358: if($pid) { # Parent process
359: Debug("In parent process for execute_command");
360: my @data = <CHILD>; # Read the child's outupt...
361: close CHILD;
362: foreach my $output_line (@data) {
363: Debug("Adding $output_line");
364: $output .= $output_line; # Presumably has a \n on it.
365: }
366:
367: } else { # Child process
368: close (STDERR);
369: open (STDERR, ">&STDOUT");# Combine stderr, and stdout...
370: exec(@words); # won't return.
371: }
372: return $output;
373: }
374:
1.200 matthew 375:
1.140 foxr 376: # GetCertificate: Given a transaction that requires a certificate,
377: # this function will extract the certificate from the transaction
378: # request. Note that at this point, the only concept of a certificate
379: # is the hostname to which we are connected.
380: #
381: # Parameter:
382: # request - The request sent by our client (this parameterization may
383: # need to change when we really use a certificate granting
384: # authority.
385: #
386: sub GetCertificate {
387: my $request = shift;
388:
389: return $clientip;
390: }
1.161 foxr 391:
1.178 foxr 392: #
393: # Return true if client is a manager.
394: #
395: sub isManager {
396: return (($ConnectionType eq "manager") || ($ConnectionType eq "both"));
397: }
398: #
399: # Return tru if client can do client functions
400: #
401: sub isClient {
402: return (($ConnectionType eq "client") || ($ConnectionType eq "both"));
403: }
1.161 foxr 404:
405:
1.156 foxr 406: #
407: # ReadManagerTable: Reads in the current manager table. For now this is
408: # done on each manager authentication because:
409: # - These authentications are not frequent
410: # - This allows dynamic changes to the manager table
411: # without the need to signal to the lond.
412: #
413: sub ReadManagerTable {
414:
1.412 foxr 415: &Debug("Reading manager table");
1.156 foxr 416: # Clean out the old table first..
417:
1.166 foxr 418: foreach my $key (keys %managers) {
419: delete $managers{$key};
420: }
421:
422: my $tablename = $perlvar{'lonTabDir'}."/managers.tab";
423: if (!open (MANAGERS, $tablename)) {
1.473 ! raeburn 424: my $hostname = &Apache::lonnet::hostname($perlvar{'lonHostID'});
! 425: if (&Apache::lonnet::is_LC_dns($hostname)) {
1.472 raeburn 426: &logthis('<font color="red">No manager table. Nobody can manage!!</font>');
427: }
428: return;
1.166 foxr 429: }
430: while(my $host = <MANAGERS>) {
431: chomp($host);
432: if ($host =~ "^#") { # Comment line.
433: next;
434: }
1.368 albertel 435: if (!defined &Apache::lonnet::get_host_ip($host)) { # This is a non cluster member
1.161 foxr 436: # The entry is of the form:
437: # cluname:hostname
438: # cluname - A 'cluster hostname' is needed in order to negotiate
439: # the host key.
440: # hostname- The dns name of the host.
441: #
1.166 foxr 442: my($cluname, $dnsname) = split(/:/, $host);
443:
444: my $ip = gethostbyname($dnsname);
445: if(defined($ip)) { # bad names don't deserve entry.
446: my $hostip = inet_ntoa($ip);
447: $managers{$hostip} = $cluname;
448: logthis('<font color="green"> registering manager '.
449: "$dnsname as $cluname with $hostip </font>\n");
450: }
451: } else {
452: logthis('<font color="green"> existing host'." $host</font>\n");
1.472 raeburn 453: $managers{&Apache::lonnet::get_host_ip($host)} = $host; # Use info from cluster tab if cluster memeber
1.166 foxr 454: }
455: }
1.156 foxr 456: }
1.140 foxr 457:
458: #
459: # ValidManager: Determines if a given certificate represents a valid manager.
460: # in this primitive implementation, the 'certificate' is
461: # just the connecting loncapa client name. This is checked
462: # against a valid client list in the configuration.
463: #
464: #
465: sub ValidManager {
466: my $certificate = shift;
467:
1.163 foxr 468: return isManager;
1.140 foxr 469: }
470: #
1.143 foxr 471: # CopyFile: Called as part of the process of installing a
472: # new configuration file. This function copies an existing
473: # file to a backup file.
474: # Parameters:
475: # oldfile - Name of the file to backup.
476: # newfile - Name of the backup file.
477: # Return:
478: # 0 - Failure (errno has failure reason).
479: # 1 - Success.
480: #
481: sub CopyFile {
1.192 foxr 482:
483: my ($oldfile, $newfile) = @_;
1.143 foxr 484:
1.281 matthew 485: if (! copy($oldfile,$newfile)) {
486: return 0;
1.143 foxr 487: }
1.281 matthew 488: chmod(0660, $newfile);
489: return 1;
1.143 foxr 490: }
1.157 foxr 491: #
492: # Host files are passed out with externally visible host IPs.
493: # If, for example, we are behind a fire-wall or NAT host, our
494: # internally visible IP may be different than the externally
495: # visible IP. Therefore, we always adjust the contents of the
496: # host file so that the entry for ME is the IP that we believe
497: # we have. At present, this is defined as the entry that
498: # DNS has for us. If by some chance we are not able to get a
499: # DNS translation for us, then we assume that the host.tab file
500: # is correct.
501: # BUGBUGBUG - in the future, we really should see if we can
502: # easily query the interface(s) instead.
503: # Parameter(s):
504: # contents - The contents of the host.tab to check.
505: # Returns:
506: # newcontents - The adjusted contents.
507: #
508: #
509: sub AdjustHostContents {
510: my $contents = shift;
511: my $adjusted;
512: my $me = $perlvar{'lonHostID'};
513:
1.354 albertel 514: foreach my $line (split(/\n/,$contents)) {
1.472 raeburn 515: if(!(($line eq "") || ($line =~ /^ *\#/) || ($line =~ /^ *$/) ||
516: ($line =~ /^\s*\^/))) {
1.157 foxr 517: chomp($line);
518: my ($id,$domain,$role,$name,$ip,$maxcon,$idleto,$mincon)=split(/:/,$line);
519: if ($id eq $me) {
1.354 albertel 520: my $ip = gethostbyname($name);
521: my $ipnew = inet_ntoa($ip);
522: $ip = $ipnew;
1.157 foxr 523: # Reconstruct the host line and append to adjusted:
524:
1.354 albertel 525: my $newline = "$id:$domain:$role:$name:$ip";
526: if($maxcon ne "") { # Not all hosts have loncnew tuning params
527: $newline .= ":$maxcon:$idleto:$mincon";
528: }
529: $adjusted .= $newline."\n";
1.157 foxr 530:
1.354 albertel 531: } else { # Not me, pass unmodified.
532: $adjusted .= $line."\n";
533: }
1.157 foxr 534: } else { # Blank or comment never re-written.
535: $adjusted .= $line."\n"; # Pass blanks and comments as is.
536: }
1.354 albertel 537: }
538: return $adjusted;
1.157 foxr 539: }
1.143 foxr 540: #
541: # InstallFile: Called to install an administrative file:
1.412 foxr 542: # - The file is created int a temp directory called <name>.tmp
543: # - lcinstall file is called to install the file.
544: # since the web app has no direct write access to the table directory
1.143 foxr 545: #
546: # Parameters:
547: # Name of the file
548: # File Contents.
549: # Return:
550: # nonzero - success.
551: # 0 - failure and $! has an errno.
1.412 foxr 552: # Assumptions:
553: # File installtion is a relatively infrequent
1.143 foxr 554: #
555: sub InstallFile {
1.192 foxr 556:
557: my ($Filename, $Contents) = @_;
1.412 foxr 558: # my $TempFile = $Filename.".tmp";
559: my $exedir = $perlvar{'lonDaemons'};
560: my $tmpdir = $exedir.'/tmp/';
561: my $TempFile = $tmpdir."TempTableFile.tmp";
1.143 foxr 562:
563: # Open the file for write:
564:
565: my $fh = IO::File->new("> $TempFile"); # Write to temp.
566: if(!(defined $fh)) {
567: &logthis('<font color="red"> Unable to create '.$TempFile."</font>");
568: return 0;
569: }
570: # write the contents of the file:
571:
572: print $fh ($Contents);
573: $fh->close; # In case we ever have a filesystem w. locking
574:
1.412 foxr 575: chmod(0664, $TempFile); # Everyone can write it.
576:
577: # Use lcinstall file to put the file in the table directory...
578:
579: &Debug("Opening pipe to $exedir/lcinstallfile $TempFile $Filename");
580: my $pf = IO::File->new("| $exedir/lcinstallfile $TempFile $Filename > $exedir/logs/lcinstallfile.log");
581: close $pf;
582: my $err = $?;
583: &Debug("Status is $err");
584: if ($err != 0) {
585: my $msg = $err;
586: if ($err < @installerrors) {
587: $msg = $installerrors[$err];
588: }
589: &logthis("Install failed for table file $Filename : $msg");
590: return 0;
591: }
592:
593: # Remove the temp file:
1.143 foxr 594:
1.412 foxr 595: unlink($TempFile);
1.143 foxr 596:
597: return 1;
598: }
1.200 matthew 599:
600:
1.169 foxr 601: #
602: # ConfigFileFromSelector: converts a configuration file selector
1.411 foxr 603: # into a configuration file pathname.
1.472 raeburn 604: # Supports the following file selectors:
605: # hosts, domain, dns_hosts, dns_domain
1.411 foxr 606: #
1.169 foxr 607: #
608: # Parameters:
609: # selector - Configuration file selector.
610: # Returns:
611: # Full path to the file or undef if the selector is invalid.
612: #
613: sub ConfigFileFromSelector {
614: my $selector = shift;
615: my $tablefile;
616:
617: my $tabledir = $perlvar{'lonTabDir'}.'/';
1.472 raeburn 618: if (($selector eq "hosts") || ($selector eq "domain") ||
619: ($selector eq "dns_hosts") || ($selector eq "dns_domain")) {
1.411 foxr 620: $tablefile = $tabledir.$selector.'.tab';
1.169 foxr 621: }
622: return $tablefile;
623: }
1.143 foxr 624: #
1.141 foxr 625: # PushFile: Called to do an administrative push of a file.
626: # - Ensure the file being pushed is one we support.
627: # - Backup the old file to <filename.saved>
628: # - Separate the contents of the new file out from the
629: # rest of the request.
630: # - Write the new file.
631: # Parameter:
632: # Request - The entire user request. This consists of a : separated
633: # string pushfile:tablename:contents.
634: # NOTE: The contents may have :'s in it as well making things a bit
635: # more interesting... but not much.
636: # Returns:
637: # String to send to client ("ok" or "refused" if bad file).
638: #
639: sub PushFile {
640: my $request = shift;
641: my ($command, $filename, $contents) = split(":", $request, 3);
1.412 foxr 642: &Debug("PushFile");
1.141 foxr 643:
644: # At this point in time, pushes for only the following tables are
645: # supported:
646: # hosts.tab ($filename eq host).
647: # domain.tab ($filename eq domain).
1.472 raeburn 648: # dns_hosts.tab ($filename eq dns_host).
649: # dns_domain.tab ($filename eq dns_domain).
1.141 foxr 650: # Construct the destination filename or reject the request.
651: #
652: # lonManage is supposed to ensure this, however this session could be
653: # part of some elaborate spoof that managed somehow to authenticate.
654: #
655:
1.169 foxr 656:
657: my $tablefile = ConfigFileFromSelector($filename);
658: if(! (defined $tablefile)) {
1.141 foxr 659: return "refused";
660: }
1.412 foxr 661:
1.157 foxr 662: # If the file being pushed is the host file, we adjust the entry for ourself so that the
663: # IP will be our current IP as looked up in dns. Note this is only 99% good as it's possible
664: # to conceive of conditions where we don't have a DNS entry locally. This is possible in a
665: # network sense but it doesn't make much sense in a LonCAPA sense so we ignore (for now)
666: # that possibilty.
667:
668: if($filename eq "host") {
669: $contents = AdjustHostContents($contents);
670: }
671:
1.141 foxr 672: # Install the new file:
673:
1.412 foxr 674: &logthis("Installing new $tablefile contents:\n$contents");
1.143 foxr 675: if(!InstallFile($tablefile, $contents)) {
676: &logthis('<font color="red"> Pushfile: unable to install '
1.145 foxr 677: .$tablefile." $! </font>");
1.143 foxr 678: return "error:$!";
1.224 foxr 679: } else {
1.143 foxr 680: &logthis('<font color="green"> Installed new '.$tablefile
1.473 ! raeburn 681: ." - transaction by: $clientname ($clientip)</font>");
1.472 raeburn 682: my $adminmail = $perlvar{'lonAdmEMail'};
683: my $admindom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
684: if ($admindom ne '') {
685: my %domconfig =
686: &Apache::lonnet::get_dom('configuration',['contacts'],$admindom);
687: if (ref($domconfig{'contacts'}) eq 'HASH') {
688: if ($domconfig{'contacts'}{'adminemail'} ne '') {
689: $adminmail = $domconfig{'contacts'}{'adminemail'};
690: }
691: }
692: }
693: if ($adminmail =~ /^[^\@]+\@[^\@]+$/) {
694: my $msg = new Mail::Send;
695: $msg->to($adminmail);
696: $msg->subject('LON-CAPA DNS update on '.$perlvar{'lonHostID'});
697: $msg->add('Content-type','text/plain; charset=UTF-8');
698: if (my $fh = $msg->open()) {
699: print $fh 'Update to '.$tablefile.' from Cluster Manager '.
1.473 ! raeburn 700: "$clientname ($clientip)\n";
1.472 raeburn 701: $fh->close;
702: }
703: }
1.143 foxr 704: }
705:
1.141 foxr 706: # Indicate success:
707:
708: return "ok";
709:
710: }
1.145 foxr 711:
712: #
713: # Called to re-init either lonc or lond.
714: #
715: # Parameters:
716: # request - The full request by the client. This is of the form
717: # reinit:<process>
718: # where <process> is allowed to be either of
719: # lonc or lond
720: #
721: # Returns:
722: # The string to be sent back to the client either:
723: # ok - Everything worked just fine.
724: # error:why - There was a failure and why describes the reason.
725: #
726: #
727: sub ReinitProcess {
728: my $request = shift;
729:
1.146 foxr 730:
731: # separate the request (reinit) from the process identifier and
732: # validate it producing the name of the .pid file for the process.
733: #
734: #
735: my ($junk, $process) = split(":", $request);
1.147 foxr 736: my $processpidfile = $perlvar{'lonDaemons'}.'/logs/';
1.146 foxr 737: if($process eq 'lonc') {
738: $processpidfile = $processpidfile."lonc.pid";
1.147 foxr 739: if (!open(PIDFILE, "< $processpidfile")) {
740: return "error:Open failed for $processpidfile";
741: }
742: my $loncpid = <PIDFILE>;
743: close(PIDFILE);
744: logthis('<font color="red"> Reinitializing lonc pid='.$loncpid
745: ."</font>");
746: kill("USR2", $loncpid);
1.146 foxr 747: } elsif ($process eq 'lond') {
1.147 foxr 748: logthis('<font color="red"> Reinitializing self (lond) </font>');
749: &UpdateHosts; # Lond is us!!
1.146 foxr 750: } else {
751: &logthis('<font color="yellow" Invalid reinit request for '.$process
752: ."</font>");
753: return "error:Invalid process identifier $process";
754: }
1.145 foxr 755: return 'ok';
756: }
1.168 foxr 757: # Validate a line in a configuration file edit script:
758: # Validation includes:
759: # - Ensuring the command is valid.
760: # - Ensuring the command has sufficient parameters
761: # Parameters:
762: # scriptline - A line to validate (\n has been stripped for what it's worth).
1.167 foxr 763: #
1.168 foxr 764: # Return:
765: # 0 - Invalid scriptline.
766: # 1 - Valid scriptline
767: # NOTE:
768: # Only the command syntax is checked, not the executability of the
769: # command.
770: #
771: sub isValidEditCommand {
772: my $scriptline = shift;
773:
774: # Line elements are pipe separated:
775:
776: my ($command, $key, $newline) = split(/\|/, $scriptline);
777: &logthis('<font color="green"> isValideditCommand checking: '.
778: "Command = '$command', Key = '$key', Newline = '$newline' </font>\n");
779:
780: if ($command eq "delete") {
781: #
782: # key with no newline.
783: #
784: if( ($key eq "") || ($newline ne "")) {
785: return 0; # Must have key but no newline.
786: } else {
787: return 1; # Valid syntax.
788: }
1.169 foxr 789: } elsif ($command eq "replace") {
1.168 foxr 790: #
791: # key and newline:
792: #
793: if (($key eq "") || ($newline eq "")) {
794: return 0;
795: } else {
796: return 1;
797: }
1.169 foxr 798: } elsif ($command eq "append") {
799: if (($key ne "") && ($newline eq "")) {
800: return 1;
801: } else {
802: return 0;
803: }
1.168 foxr 804: } else {
805: return 0; # Invalid command.
806: }
807: return 0; # Should not get here!!!
808: }
1.169 foxr 809: #
810: # ApplyEdit - Applies an edit command to a line in a configuration
811: # file. It is the caller's responsiblity to validate the
812: # edit line.
813: # Parameters:
814: # $directive - A single edit directive to apply.
815: # Edit directives are of the form:
816: # append|newline - Appends a new line to the file.
817: # replace|key|newline - Replaces the line with key value 'key'
818: # delete|key - Deletes the line with key value 'key'.
819: # $editor - A config file editor object that contains the
820: # file being edited.
821: #
822: sub ApplyEdit {
1.192 foxr 823:
824: my ($directive, $editor) = @_;
1.169 foxr 825:
826: # Break the directive down into its command and its parameters
827: # (at most two at this point. The meaning of the parameters, if in fact
828: # they exist depends on the command).
829:
830: my ($command, $p1, $p2) = split(/\|/, $directive);
831:
832: if($command eq "append") {
833: $editor->Append($p1); # p1 - key p2 null.
834: } elsif ($command eq "replace") {
835: $editor->ReplaceLine($p1, $p2); # p1 - key p2 = newline.
836: } elsif ($command eq "delete") {
837: $editor->DeleteLine($p1); # p1 - key p2 null.
838: } else { # Should not get here!!!
839: die "Invalid command given to ApplyEdit $command"
840: }
841: }
842: #
843: # AdjustOurHost:
844: # Adjusts a host file stored in a configuration file editor object
845: # for the true IP address of this host. This is necessary for hosts
846: # that live behind a firewall.
847: # Those hosts have a publicly distributed IP of the firewall, but
848: # internally must use their actual IP. We assume that a given
849: # host only has a single IP interface for now.
850: # Formal Parameters:
851: # editor - The configuration file editor to adjust. This
852: # editor is assumed to contain a hosts.tab file.
853: # Strategy:
854: # - Figure out our hostname.
855: # - Lookup the entry for this host.
856: # - Modify the line to contain our IP
857: # - Do a replace for this host.
858: sub AdjustOurHost {
859: my $editor = shift;
860:
861: # figure out who I am.
862:
863: my $myHostName = $perlvar{'lonHostID'}; # LonCAPA hostname.
864:
865: # Get my host file entry.
866:
867: my $ConfigLine = $editor->Find($myHostName);
868: if(! (defined $ConfigLine)) {
869: die "AdjustOurHost - no entry for me in hosts file $myHostName";
870: }
871: # figure out my IP:
872: # Use the config line to get my hostname.
873: # Use gethostbyname to translate that into an IP address.
874: #
1.338 albertel 875: my ($id,$domain,$role,$name,$maxcon,$idleto,$mincon) = split(/:/,$ConfigLine);
1.169 foxr 876: #
877: # Reassemble the config line from the elements in the list.
878: # Note that if the loncnew items were not present before, they will
879: # be now even if they would be empty
880: #
881: my $newConfigLine = $id;
1.338 albertel 882: foreach my $item ($domain, $role, $name, $maxcon, $idleto, $mincon) {
1.169 foxr 883: $newConfigLine .= ":".$item;
884: }
885: # Replace the line:
886:
887: $editor->ReplaceLine($id, $newConfigLine);
888:
889: }
890: #
891: # ReplaceConfigFile:
892: # Replaces a configuration file with the contents of a
893: # configuration file editor object.
894: # This is done by:
895: # - Copying the target file to <filename>.old
896: # - Writing the new file to <filename>.tmp
897: # - Moving <filename.tmp> -> <filename>
898: # This laborious process ensures that the system is never without
899: # a configuration file that's at least valid (even if the contents
900: # may be dated).
901: # Parameters:
902: # filename - Name of the file to modify... this is a full path.
903: # editor - Editor containing the file.
904: #
905: sub ReplaceConfigFile {
1.192 foxr 906:
907: my ($filename, $editor) = @_;
1.168 foxr 908:
1.169 foxr 909: CopyFile ($filename, $filename.".old");
910:
911: my $contents = $editor->Get(); # Get the contents of the file.
912:
913: InstallFile($filename, $contents);
914: }
1.168 foxr 915: #
916: #
917: # Called to edit a configuration table file
1.167 foxr 918: # Parameters:
919: # request - The entire command/request sent by lonc or lonManage
920: # Return:
921: # The reply to send to the client.
1.168 foxr 922: #
1.167 foxr 923: sub EditFile {
924: my $request = shift;
925:
926: # Split the command into it's pieces: edit:filetype:script
927:
1.339 albertel 928: my ($cmd, $filetype, $script) = split(/:/, $request,3); # : in script
1.167 foxr 929:
930: # Check the pre-coditions for success:
931:
1.339 albertel 932: if($cmd != "edit") { # Something is amiss afoot alack.
1.167 foxr 933: return "error:edit request detected, but request != 'edit'\n";
934: }
935: if( ($filetype ne "hosts") &&
936: ($filetype ne "domain")) {
937: return "error:edit requested with invalid file specifier: $filetype \n";
938: }
939:
940: # Split the edit script and check it's validity.
1.168 foxr 941:
942: my @scriptlines = split(/\n/, $script); # one line per element.
943: my $linecount = scalar(@scriptlines);
944: for(my $i = 0; $i < $linecount; $i++) {
945: chomp($scriptlines[$i]);
946: if(!isValidEditCommand($scriptlines[$i])) {
947: return "error:edit with bad script line: '$scriptlines[$i]' \n";
948: }
949: }
1.145 foxr 950:
1.167 foxr 951: # Execute the edit operation.
1.169 foxr 952: # - Create a config file editor for the appropriate file and
953: # - execute each command in the script:
954: #
955: my $configfile = ConfigFileFromSelector($filetype);
956: if (!(defined $configfile)) {
957: return "refused\n";
958: }
959: my $editor = ConfigFileEdit->new($configfile);
1.167 foxr 960:
1.169 foxr 961: for (my $i = 0; $i < $linecount; $i++) {
962: ApplyEdit($scriptlines[$i], $editor);
963: }
964: # If the file is the host file, ensure that our host is
965: # adjusted to have our ip:
966: #
967: if($filetype eq "host") {
968: AdjustOurHost($editor);
969: }
970: # Finally replace the current file with our file.
971: #
972: ReplaceConfigFile($configfile, $editor);
1.167 foxr 973:
974: return "ok\n";
975: }
1.207 foxr 976:
1.255 foxr 977: # read_profile
978: #
979: # Returns a set of specific entries from a user's profile file.
980: # this is a utility function that is used by both get_profile_entry and
981: # get_profile_entry_encrypted.
982: #
983: # Parameters:
984: # udom - Domain in which the user exists.
985: # uname - User's account name (loncapa account)
986: # namespace - The profile namespace to open.
987: # what - A set of & separated queries.
988: # Returns:
989: # If all ok: - The string that needs to be shipped back to the user.
990: # If failure - A string that starts with error: followed by the failure
991: # reason.. note that this probabyl gets shipped back to the
992: # user as well.
993: #
994: sub read_profile {
995: my ($udom, $uname, $namespace, $what) = @_;
996:
997: my $hashref = &tie_user_hash($udom, $uname, $namespace,
998: &GDBM_READER());
999: if ($hashref) {
1000: my @queries=split(/\&/,$what);
1.440 raeburn 1001: if ($namespace eq 'roles') {
1002: @queries = map { &unescape($_); } @queries;
1003: }
1.255 foxr 1004: my $qresult='';
1005:
1006: for (my $i=0;$i<=$#queries;$i++) {
1007: $qresult.="$hashref->{$queries[$i]}&"; # Presumably failure gives empty string.
1008: }
1009: $qresult=~s/\&$//; # Remove trailing & from last lookup.
1.311 albertel 1010: if (&untie_user_hash($hashref)) {
1.255 foxr 1011: return $qresult;
1012: } else {
1013: return "error: ".($!+0)." untie (GDBM) Failed";
1014: }
1015: } else {
1016: if ($!+0 == 2) {
1017: return "error:No such file or GDBM reported bad block error";
1018: } else {
1019: return "error: ".($!+0)." tie (GDBM) Failed";
1020: }
1021: }
1022:
1023: }
1.214 foxr 1024: #--------------------- Request Handlers --------------------------------------------
1025: #
1.215 foxr 1026: # By convention each request handler registers itself prior to the sub
1027: # declaration:
1.214 foxr 1028: #
1029:
1.216 foxr 1030: #++
1031: #
1.214 foxr 1032: # Handles ping requests.
1033: # Parameters:
1034: # $cmd - the actual keyword that invoked us.
1035: # $tail - the tail of the request that invoked us.
1036: # $replyfd- File descriptor connected to the client
1037: # Implicit Inputs:
1038: # $currenthostid - Global variable that carries the name of the host we are
1039: # known as.
1040: # Returns:
1041: # 1 - Ok to continue processing.
1042: # 0 - Program should exit.
1043: # Side effects:
1044: # Reply information is sent to the client.
1045: sub ping_handler {
1046: my ($cmd, $tail, $client) = @_;
1047: Debug("$cmd $tail $client .. $currenthostid:");
1048:
1.387 albertel 1049: Reply( $client,\$currenthostid,"$cmd:$tail");
1.214 foxr 1050:
1051: return 1;
1052: }
1053: ®ister_handler("ping", \&ping_handler, 0, 1, 1); # Ping unencoded, client or manager.
1054:
1.216 foxr 1055: #++
1.215 foxr 1056: #
1057: # Handles pong requests. Pong replies with our current host id, and
1058: # the results of a ping sent to us via our lonc.
1059: #
1060: # Parameters:
1061: # $cmd - the actual keyword that invoked us.
1062: # $tail - the tail of the request that invoked us.
1063: # $replyfd- File descriptor connected to the client
1064: # Implicit Inputs:
1065: # $currenthostid - Global variable that carries the name of the host we are
1066: # connected to.
1067: # Returns:
1068: # 1 - Ok to continue processing.
1069: # 0 - Program should exit.
1070: # Side effects:
1071: # Reply information is sent to the client.
1072: sub pong_handler {
1073: my ($cmd, $tail, $replyfd) = @_;
1074:
1.365 albertel 1075: my $reply=&Apache::lonnet::reply("ping",$clientname);
1.215 foxr 1076: &Reply( $replyfd, "$currenthostid:$reply\n", "$cmd:$tail");
1077: return 1;
1078: }
1079: ®ister_handler("pong", \&pong_handler, 0, 1, 1); # Pong unencoded, client or manager
1080:
1.216 foxr 1081: #++
1082: # Called to establish an encrypted session key with the remote client.
1083: # Note that with secure lond, in most cases this function is never
1084: # invoked. Instead, the secure session key is established either
1085: # via a local file that's locked down tight and only lives for a short
1086: # time, or via an ssl tunnel...and is generated from a bunch-o-random
1087: # bits from /dev/urandom, rather than the predictable pattern used by
1088: # by this sub. This sub is only used in the old-style insecure
1089: # key negotiation.
1090: # Parameters:
1091: # $cmd - the actual keyword that invoked us.
1092: # $tail - the tail of the request that invoked us.
1093: # $replyfd- File descriptor connected to the client
1094: # Implicit Inputs:
1095: # $currenthostid - Global variable that carries the name of the host
1096: # known as.
1.448 raeburn 1097: # $clientname - Global variable that carries the name of the host we're connected to.
1.216 foxr 1098: # Returns:
1099: # 1 - Ok to continue processing.
1100: # 0 - Program should exit.
1101: # Implicit Outputs:
1102: # Reply information is sent to the client.
1103: # $cipher is set with a reference to a new IDEA encryption object.
1104: #
1105: sub establish_key_handler {
1106: my ($cmd, $tail, $replyfd) = @_;
1107:
1108: my $buildkey=time.$$.int(rand 100000);
1109: $buildkey=~tr/1-6/A-F/;
1110: $buildkey=int(rand 100000).$buildkey.int(rand 100000);
1111: my $key=$currenthostid.$clientname;
1112: $key=~tr/a-z/A-Z/;
1113: $key=~tr/G-P/0-9/;
1114: $key=~tr/Q-Z/0-9/;
1115: $key=$key.$buildkey.$key.$buildkey.$key.$buildkey;
1116: $key=substr($key,0,32);
1117: my $cipherkey=pack("H32",$key);
1118: $cipher=new IDEA $cipherkey;
1.387 albertel 1119: &Reply($replyfd, \$buildkey, "$cmd:$tail");
1.216 foxr 1120:
1121: return 1;
1122:
1123: }
1124: ®ister_handler("ekey", \&establish_key_handler, 0, 1,1);
1125:
1.217 foxr 1126: # Handler for the load command. Returns the current system load average
1127: # to the requestor.
1128: #
1129: # Parameters:
1130: # $cmd - the actual keyword that invoked us.
1131: # $tail - the tail of the request that invoked us.
1132: # $replyfd- File descriptor connected to the client
1133: # Implicit Inputs:
1134: # $currenthostid - Global variable that carries the name of the host
1135: # known as.
1.448 raeburn 1136: # $clientname - Global variable that carries the name of the host we're connected to.
1.217 foxr 1137: # Returns:
1138: # 1 - Ok to continue processing.
1139: # 0 - Program should exit.
1140: # Side effects:
1141: # Reply information is sent to the client.
1142: sub load_handler {
1143: my ($cmd, $tail, $replyfd) = @_;
1144:
1.463 foxr 1145:
1146:
1.217 foxr 1147: # Get the load average from /proc/loadavg and calculate it as a percentage of
1148: # the allowed load limit as set by the perl global variable lonLoadLim
1149:
1150: my $loadavg;
1151: my $loadfile=IO::File->new('/proc/loadavg');
1152:
1153: $loadavg=<$loadfile>;
1154: $loadavg =~ s/\s.*//g; # Extract the first field only.
1155:
1156: my $loadpercent=100*$loadavg/$perlvar{'lonLoadLim'};
1157:
1.387 albertel 1158: &Reply( $replyfd, \$loadpercent, "$cmd:$tail");
1.217 foxr 1159:
1160: return 1;
1161: }
1.263 albertel 1162: ®ister_handler("load", \&load_handler, 0, 1, 0);
1.217 foxr 1163:
1164: #
1165: # Process the userload request. This sub returns to the client the current
1166: # user load average. It can be invoked either by clients or managers.
1167: #
1168: # Parameters:
1169: # $cmd - the actual keyword that invoked us.
1170: # $tail - the tail of the request that invoked us.
1171: # $replyfd- File descriptor connected to the client
1172: # Implicit Inputs:
1173: # $currenthostid - Global variable that carries the name of the host
1174: # known as.
1.448 raeburn 1175: # $clientname - Global variable that carries the name of the host we're connected to.
1.217 foxr 1176: # Returns:
1177: # 1 - Ok to continue processing.
1178: # 0 - Program should exit
1179: # Implicit inputs:
1180: # whatever the userload() function requires.
1181: # Implicit outputs:
1182: # the reply is written to the client.
1183: #
1184: sub user_load_handler {
1185: my ($cmd, $tail, $replyfd) = @_;
1186:
1.365 albertel 1187: my $userloadpercent=&Apache::lonnet::userload();
1.387 albertel 1188: &Reply($replyfd, \$userloadpercent, "$cmd:$tail");
1.217 foxr 1189:
1190: return 1;
1191: }
1.263 albertel 1192: ®ister_handler("userload", \&user_load_handler, 0, 1, 0);
1.217 foxr 1193:
1.218 foxr 1194: # Process a request for the authorization type of a user:
1195: # (userauth).
1196: #
1197: # Parameters:
1198: # $cmd - the actual keyword that invoked us.
1199: # $tail - the tail of the request that invoked us.
1200: # $replyfd- File descriptor connected to the client
1201: # Returns:
1202: # 1 - Ok to continue processing.
1203: # 0 - Program should exit
1204: # Implicit outputs:
1205: # The user authorization type is written to the client.
1206: #
1207: sub user_authorization_type {
1208: my ($cmd, $tail, $replyfd) = @_;
1209:
1210: my $userinput = "$cmd:$tail";
1211:
1212: # Pull the domain and username out of the command tail.
1.222 foxr 1213: # and call get_auth_type to determine the authentication type.
1.218 foxr 1214:
1215: my ($udom,$uname)=split(/:/,$tail);
1.222 foxr 1216: my $result = &get_auth_type($udom, $uname);
1.218 foxr 1217: if($result eq "nouser") {
1218: &Failure( $replyfd, "unknown_user\n", $userinput);
1219: } else {
1220: #
1.222 foxr 1221: # We only want to pass the second field from get_auth_type
1.218 foxr 1222: # for ^krb.. otherwise we'll be handing out the encrypted
1223: # password for internals e.g.
1224: #
1225: my ($type,$otherinfo) = split(/:/,$result);
1226: if($type =~ /^krb/) {
1227: $type = $result;
1.269 raeburn 1228: } else {
1229: $type .= ':';
1230: }
1.387 albertel 1231: &Reply( $replyfd, \$type, $userinput);
1.218 foxr 1232: }
1233:
1234: return 1;
1235: }
1236: ®ister_handler("currentauth", \&user_authorization_type, 1, 1, 0);
1237:
1238: # Process a request by a manager to push a hosts or domain table
1239: # to us. We pick apart the command and pass it on to the subs
1240: # that already exist to do this.
1241: #
1242: # Parameters:
1243: # $cmd - the actual keyword that invoked us.
1244: # $tail - the tail of the request that invoked us.
1245: # $client - File descriptor connected to the client
1246: # Returns:
1247: # 1 - Ok to continue processing.
1248: # 0 - Program should exit
1249: # Implicit Output:
1250: # a reply is written to the client.
1251: sub push_file_handler {
1252: my ($cmd, $tail, $client) = @_;
1.412 foxr 1253: &Debug("In push file handler");
1.218 foxr 1254: my $userinput = "$cmd:$tail";
1255:
1256: # At this time we only know that the IP of our partner is a valid manager
1257: # the code below is a hook to do further authentication (e.g. to resolve
1258: # spoofing).
1259:
1260: my $cert = &GetCertificate($userinput);
1.412 foxr 1261: if(&ValidManager($cert)) {
1262: &Debug("Valid manager: $client");
1.218 foxr 1263:
1264: # Now presumably we have the bona fides of both the peer host and the
1265: # process making the request.
1266:
1267: my $reply = &PushFile($userinput);
1.387 albertel 1268: &Reply($client, \$reply, $userinput);
1.218 foxr 1269:
1270: } else {
1.412 foxr 1271: &logthis("push_file_handler $client is not valid");
1.218 foxr 1272: &Failure( $client, "refused\n", $userinput);
1273: }
1.219 foxr 1274: return 1;
1.218 foxr 1275: }
1276: ®ister_handler("pushfile", \&push_file_handler, 1, 0, 1);
1277:
1.399 raeburn 1278: # The du_handler routine should be considered obsolete and is retained
1279: # for communication with legacy servers. Please see the du2_handler.
1.243 banghart 1280: #
1.399 raeburn 1281: # du - list the disk usage of a directory recursively.
1.243 banghart 1282: #
1283: # note: stolen code from the ls file handler
1284: # under construction by Rick Banghart
1285: # .
1286: # Parameters:
1287: # $cmd - The command that dispatched us (du).
1288: # $ududir - The directory path to list... I'm not sure what this
1289: # is relative as things like ls:. return e.g.
1290: # no_such_dir.
1291: # $client - Socket open on the client.
1292: # Returns:
1293: # 1 - indicating that the daemon should not disconnect.
1294: # Side Effects:
1295: # The reply is written to $client.
1296: #
1297: sub du_handler {
1298: my ($cmd, $ududir, $client) = @_;
1.339 albertel 1299: ($ududir) = split(/:/,$ududir); # Make 'telnet' testing easier.
1.251 foxr 1300: my $userinput = "$cmd:$ududir";
1301:
1.245 albertel 1302: if ($ududir=~/\.\./ || $ududir!~m|^/home/httpd/|) {
1303: &Failure($client,"refused\n","$cmd:$ududir");
1304: return 1;
1305: }
1.249 foxr 1306: # Since $ududir could have some nasties in it,
1307: # we will require that ududir is a valid
1308: # directory. Just in case someone tries to
1309: # slip us a line like .;(cd /home/httpd rm -rf*)
1310: # etc.
1311: #
1312: if (-d $ududir) {
1.292 albertel 1313: my $total_size=0;
1314: my $code=sub {
1315: if ($_=~/\.\d+\./) { return;}
1316: if ($_=~/\.meta$/) { return;}
1.362 albertel 1317: if (-d $_) { return;}
1.292 albertel 1318: $total_size+=(stat($_))[7];
1319: };
1.295 raeburn 1320: chdir($ududir);
1.292 albertel 1321: find($code,$ududir);
1322: $total_size=int($total_size/1024);
1.387 albertel 1323: &Reply($client,\$total_size,"$cmd:$ududir");
1.249 foxr 1324: } else {
1.251 foxr 1325: &Failure($client, "bad_directory:$ududir\n","$cmd:$ududir");
1.249 foxr 1326: }
1.243 banghart 1327: return 1;
1328: }
1329: ®ister_handler("du", \&du_handler, 0, 1, 0);
1.218 foxr 1330:
1.399 raeburn 1331: # Please also see the du_handler, which is obsoleted by du2.
1332: # du2_handler differs from du_handler in that required path to directory
1333: # provided by &propath() is prepended in the handler instead of on the
1334: # client side.
1.239 foxr 1335: #
1.399 raeburn 1336: # du2 - list the disk usage of a directory recursively.
1337: #
1338: # Parameters:
1339: # $cmd - The command that dispatched us (du).
1340: # $tail - The tail of the request that invoked us.
1341: # $tail is a : separated list of the following:
1342: # - $ududir - directory path to list (before prepending)
1343: # - $getpropath = 1 if &propath() should prepend
1344: # - $uname - username to use for &propath or user dir
1345: # - $udom - domain to use for &propath or user dir
1346: # All are escaped.
1347: # $client - Socket open on the client.
1348: # Returns:
1349: # 1 - indicating that the daemon should not disconnect.
1350: # Side Effects:
1351: # The reply is written to $client.
1352: #
1353:
1354: sub du2_handler {
1355: my ($cmd, $tail, $client) = @_;
1356: my ($ududir,$getpropath,$uname,$udom) = map { &unescape($_) } (split(/:/, $tail));
1357: my $userinput = "$cmd:$tail";
1358: if (($ududir=~/\.\./) || (($ududir!~m|^/home/httpd/|) && (!$getpropath))) {
1359: &Failure($client,"refused\n","$cmd:$tail");
1360: return 1;
1361: }
1362: if ($getpropath) {
1363: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1364: $ududir = &propath($udom,$uname).'/'.$ududir;
1365: } else {
1366: &Failure($client,"refused\n","$cmd:$tail");
1367: return 1;
1368: }
1369: }
1370: # Since $ududir could have some nasties in it,
1371: # we will require that ududir is a valid
1372: # directory. Just in case someone tries to
1373: # slip us a line like .;(cd /home/httpd rm -rf*)
1374: # etc.
1375: #
1376: if (-d $ududir) {
1377: my $total_size=0;
1378: my $code=sub {
1379: if ($_=~/\.\d+\./) { return;}
1380: if ($_=~/\.meta$/) { return;}
1381: if (-d $_) { return;}
1382: $total_size+=(stat($_))[7];
1383: };
1384: chdir($ududir);
1385: find($code,$ududir);
1386: $total_size=int($total_size/1024);
1387: &Reply($client,\$total_size,"$cmd:$ududir");
1388: } else {
1389: &Failure($client, "bad_directory:$ududir\n","$cmd:$tail");
1390: }
1391: return 1;
1392: }
1393: ®ister_handler("du2", \&du2_handler, 0, 1, 0);
1394:
1395: #
1396: # The ls_handler routine should be considered obsolete and is retained
1397: # for communication with legacy servers. Please see the ls3_handler.
1.280 matthew 1398: #
1.239 foxr 1399: # ls - list the contents of a directory. For each file in the
1400: # selected directory the filename followed by the full output of
1401: # the stat function is returned. The returned info for each
1402: # file are separated by ':'. The stat fields are separated by &'s.
1403: # Parameters:
1404: # $cmd - The command that dispatched us (ls).
1405: # $ulsdir - The directory path to list... I'm not sure what this
1406: # is relative as things like ls:. return e.g.
1407: # no_such_dir.
1408: # $client - Socket open on the client.
1409: # Returns:
1410: # 1 - indicating that the daemon should not disconnect.
1411: # Side Effects:
1412: # The reply is written to $client.
1413: #
1414: sub ls_handler {
1.280 matthew 1415: # obsoleted by ls2_handler
1.239 foxr 1416: my ($cmd, $ulsdir, $client) = @_;
1417:
1418: my $userinput = "$cmd:$ulsdir";
1419:
1420: my $obs;
1421: my $rights;
1422: my $ulsout='';
1423: my $ulsfn;
1424: if (-e $ulsdir) {
1425: if(-d $ulsdir) {
1426: if (opendir(LSDIR,$ulsdir)) {
1427: while ($ulsfn=readdir(LSDIR)) {
1.291 albertel 1428: undef($obs);
1429: undef($rights);
1.239 foxr 1430: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1431: #We do some obsolete checking here
1432: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1433: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1434: my @obsolete=<FILE>;
1435: foreach my $obsolete (@obsolete) {
1.301 www 1436: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1.239 foxr 1437: if($obsolete =~ m|(<copyright>)(default)|) { $rights = 1; }
1438: }
1439: }
1440: $ulsout.=$ulsfn.'&'.join('&',@ulsstats);
1441: if($obs eq '1') { $ulsout.="&1"; }
1442: else { $ulsout.="&0"; }
1443: if($rights eq '1') { $ulsout.="&1:"; }
1444: else { $ulsout.="&0:"; }
1445: }
1446: closedir(LSDIR);
1447: }
1448: } else {
1449: my @ulsstats=stat($ulsdir);
1450: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1451: }
1452: } else {
1453: $ulsout='no_such_dir';
1454: }
1455: if ($ulsout eq '') { $ulsout='empty'; }
1.387 albertel 1456: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1.239 foxr 1457:
1458: return 1;
1459:
1460: }
1461: ®ister_handler("ls", \&ls_handler, 0, 1, 0);
1462:
1.399 raeburn 1463: # The ls2_handler routine should be considered obsolete and is retained
1464: # for communication with legacy servers. Please see the ls3_handler.
1465: # Please also see the ls_handler, which was itself obsoleted by ls2.
1.280 matthew 1466: # ls2_handler differs from ls_handler in that it escapes its return
1467: # values before concatenating them together with ':'s.
1468: #
1469: # ls2 - list the contents of a directory. For each file in the
1470: # selected directory the filename followed by the full output of
1471: # the stat function is returned. The returned info for each
1472: # file are separated by ':'. The stat fields are separated by &'s.
1473: # Parameters:
1474: # $cmd - The command that dispatched us (ls).
1475: # $ulsdir - The directory path to list... I'm not sure what this
1476: # is relative as things like ls:. return e.g.
1477: # no_such_dir.
1478: # $client - Socket open on the client.
1479: # Returns:
1480: # 1 - indicating that the daemon should not disconnect.
1481: # Side Effects:
1482: # The reply is written to $client.
1483: #
1484: sub ls2_handler {
1485: my ($cmd, $ulsdir, $client) = @_;
1486:
1487: my $userinput = "$cmd:$ulsdir";
1488:
1489: my $obs;
1490: my $rights;
1491: my $ulsout='';
1492: my $ulsfn;
1493: if (-e $ulsdir) {
1494: if(-d $ulsdir) {
1495: if (opendir(LSDIR,$ulsdir)) {
1496: while ($ulsfn=readdir(LSDIR)) {
1.291 albertel 1497: undef($obs);
1498: undef($rights);
1.280 matthew 1499: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1500: #We do some obsolete checking here
1501: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1502: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1503: my @obsolete=<FILE>;
1504: foreach my $obsolete (@obsolete) {
1.301 www 1505: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1.280 matthew 1506: if($obsolete =~ m|(<copyright>)(default)|) {
1507: $rights = 1;
1508: }
1509: }
1510: }
1511: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1512: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1513: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1514: $ulsout.= &escape($tmp).':';
1515: }
1516: closedir(LSDIR);
1517: }
1518: } else {
1519: my @ulsstats=stat($ulsdir);
1520: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1521: }
1522: } else {
1523: $ulsout='no_such_dir';
1524: }
1525: if ($ulsout eq '') { $ulsout='empty'; }
1.387 albertel 1526: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1.280 matthew 1527: return 1;
1528: }
1529: ®ister_handler("ls2", \&ls2_handler, 0, 1, 0);
1.399 raeburn 1530: #
1531: # ls3 - list the contents of a directory. For each file in the
1532: # selected directory the filename followed by the full output of
1533: # the stat function is returned. The returned info for each
1534: # file are separated by ':'. The stat fields are separated by &'s.
1535: # Parameters:
1536: # $cmd - The command that dispatched us (ls).
1537: # $tail - The tail of the request that invoked us.
1538: # $tail is a : separated list of the following:
1539: # - $ulsdir - directory path to list (before prepending)
1540: # - $getpropath = 1 if &propath() should prepend
1541: # - $getuserdir = 1 if path to user dir in lonUsers should
1542: # prepend
1543: # - $alternate_root - path to prepend
1544: # - $uname - username to use for &propath or user dir
1545: # - $udom - domain to use for &propath or user dir
1546: # All of these except $getpropath and &getuserdir are escaped.
1547: # no_such_dir.
1548: # $client - Socket open on the client.
1549: # Returns:
1550: # 1 - indicating that the daemon should not disconnect.
1551: # Side Effects:
1552: # The reply is written to $client.
1553: #
1554:
1555: sub ls3_handler {
1556: my ($cmd, $tail, $client) = @_;
1557: my $userinput = "$cmd:$tail";
1558: my ($ulsdir,$getpropath,$getuserdir,$alternate_root,$uname,$udom) =
1559: split(/:/,$tail);
1560: if (defined($ulsdir)) {
1561: $ulsdir = &unescape($ulsdir);
1562: }
1563: if (defined($alternate_root)) {
1564: $alternate_root = &unescape($alternate_root);
1565: }
1566: if (defined($uname)) {
1567: $uname = &unescape($uname);
1568: }
1569: if (defined($udom)) {
1570: $udom = &unescape($udom);
1571: }
1572:
1573: my $dir_root = $perlvar{'lonDocRoot'};
1574: if ($getpropath) {
1575: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1576: $dir_root = &propath($udom,$uname);
1577: $dir_root =~ s/\/$//;
1578: } else {
1579: &Failure($client,"refused\n","$cmd:$tail");
1580: return 1;
1581: }
1582: } elsif ($getuserdir) {
1583: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1584: my $subdir=$uname.'__';
1585: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
1586: $dir_root = $Apache::lonnet::perlvar{'lonUsersDir'}
1587: ."/$udom/$subdir/$uname";
1588: } else {
1589: &Failure($client,"refused\n","$cmd:$tail");
1590: return 1;
1591: }
1.400 raeburn 1592: } elsif ($alternate_root ne '') {
1.399 raeburn 1593: $dir_root = $alternate_root;
1594: }
1.408 raeburn 1595: if (($dir_root ne '') && ($dir_root ne '/')) {
1.400 raeburn 1596: if ($ulsdir =~ /^\//) {
1597: $ulsdir = $dir_root.$ulsdir;
1598: } else {
1599: $ulsdir = $dir_root.'/'.$ulsdir;
1600: }
1.399 raeburn 1601: }
1602: my $obs;
1603: my $rights;
1604: my $ulsout='';
1605: my $ulsfn;
1606: if (-e $ulsdir) {
1607: if(-d $ulsdir) {
1608: if (opendir(LSDIR,$ulsdir)) {
1609: while ($ulsfn=readdir(LSDIR)) {
1610: undef($obs);
1611: undef($rights);
1612: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1613: #We do some obsolete checking here
1614: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1615: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1616: my @obsolete=<FILE>;
1617: foreach my $obsolete (@obsolete) {
1618: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1619: if($obsolete =~ m|(<copyright>)(default)|) {
1620: $rights = 1;
1621: }
1622: }
1623: }
1624: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1625: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1626: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1627: $ulsout.= &escape($tmp).':';
1628: }
1629: closedir(LSDIR);
1630: }
1631: } else {
1632: my @ulsstats=stat($ulsdir);
1633: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1634: }
1635: } else {
1636: $ulsout='no_such_dir';
1.400 raeburn 1637: }
1638: if ($ulsout eq '') { $ulsout='empty'; }
1639: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1640: return 1;
1.399 raeburn 1641: }
1642: ®ister_handler("ls3", \&ls3_handler, 0, 1, 0);
1.280 matthew 1643:
1.410 raeburn 1644: sub server_timezone_handler {
1645: my ($cmd,$tail,$client) = @_;
1646: my $userinput = "$cmd:$tail";
1647: my $timezone;
1648: my $clockfile = '/etc/sysconfig/clock'; # Fedora/CentOS/SuSE
1649: my $tzfile = '/etc/timezone'; # Debian/Ubuntu
1650: if (-e $clockfile) {
1651: if (open(my $fh,"<$clockfile")) {
1652: while (<$fh>) {
1653: next if (/^[\#\s]/);
1654: if (/^(?:TIME)?ZONE\s*=\s*['"]?\s*([\w\/]+)/) {
1655: $timezone = $1;
1656: last;
1657: }
1658: }
1659: close($fh);
1660: }
1661: } elsif (-e $tzfile) {
1662: if (open(my $fh,"<$tzfile")) {
1663: $timezone = <$fh>;
1664: close($fh);
1665: chomp($timezone);
1666: if ($timezone =~ m{^Etc/(\w+)$}) {
1667: $timezone = $1;
1668: }
1669: }
1670: }
1671: &Reply($client,\$timezone,$userinput); # This supports debug logging.
1672: return 1;
1673: }
1674: ®ister_handler("servertimezone", \&server_timezone_handler, 0, 1, 0);
1675:
1.413 raeburn 1676: sub server_loncaparev_handler {
1677: my ($cmd,$tail,$client) = @_;
1678: my $userinput = "$cmd:$tail";
1679: &Reply($client,\$perlvar{'lonVersion'},$userinput);
1680: return 1;
1681: }
1682: ®ister_handler("serverloncaparev", \&server_loncaparev_handler, 0, 1, 0);
1683:
1.448 raeburn 1684: sub server_homeID_handler {
1685: my ($cmd,$tail,$client) = @_;
1686: my $userinput = "$cmd:$tail";
1687: &Reply($client,\$perlvar{'lonHostID'},$userinput);
1688: return 1;
1689: }
1690: ®ister_handler("serverhomeID", \&server_homeID_handler, 0, 1, 0);
1691:
1.471 raeburn 1692: sub server_distarch_handler {
1693: my ($cmd,$tail,$client) = @_;
1694: my $userinput = "$cmd:$tail";
1695: my $reply = &distro_and_arch();
1696: &Reply($client,\$reply,$userinput);
1697: return 1;
1698: }
1699: ®ister_handler("serverdistarch", \&server_distarch_handler, 0, 1, 0);
1700:
1.218 foxr 1701: # Process a reinit request. Reinit requests that either
1702: # lonc or lond be reinitialized so that an updated
1703: # host.tab or domain.tab can be processed.
1704: #
1705: # Parameters:
1706: # $cmd - the actual keyword that invoked us.
1707: # $tail - the tail of the request that invoked us.
1708: # $client - File descriptor connected to the client
1709: # Returns:
1710: # 1 - Ok to continue processing.
1711: # 0 - Program should exit
1712: # Implicit output:
1713: # a reply is sent to the client.
1714: #
1715: sub reinit_process_handler {
1716: my ($cmd, $tail, $client) = @_;
1717:
1718: my $userinput = "$cmd:$tail";
1719:
1720: my $cert = &GetCertificate($userinput);
1721: if(&ValidManager($cert)) {
1722: chomp($userinput);
1723: my $reply = &ReinitProcess($userinput);
1.387 albertel 1724: &Reply( $client, \$reply, $userinput);
1.218 foxr 1725: } else {
1726: &Failure( $client, "refused\n", $userinput);
1727: }
1728: return 1;
1729: }
1730: ®ister_handler("reinit", \&reinit_process_handler, 1, 0, 1);
1731:
1732: # Process the editing script for a table edit operation.
1733: # the editing operation must be encrypted and requested by
1734: # a manager host.
1735: #
1736: # Parameters:
1737: # $cmd - the actual keyword that invoked us.
1738: # $tail - the tail of the request that invoked us.
1739: # $client - File descriptor connected to the client
1740: # Returns:
1741: # 1 - Ok to continue processing.
1742: # 0 - Program should exit
1743: # Implicit output:
1744: # a reply is sent to the client.
1745: #
1746: sub edit_table_handler {
1747: my ($command, $tail, $client) = @_;
1748:
1749: my $userinput = "$command:$tail";
1750:
1751: my $cert = &GetCertificate($userinput);
1752: if(&ValidManager($cert)) {
1753: my($filetype, $script) = split(/:/, $tail);
1754: if (($filetype eq "hosts") ||
1755: ($filetype eq "domain")) {
1756: if($script ne "") {
1757: &Reply($client, # BUGBUG - EditFile
1758: &EditFile($userinput), # could fail.
1759: $userinput);
1760: } else {
1761: &Failure($client,"refused\n",$userinput);
1762: }
1763: } else {
1764: &Failure($client,"refused\n",$userinput);
1765: }
1766: } else {
1767: &Failure($client,"refused\n",$userinput);
1768: }
1769: return 1;
1770: }
1.263 albertel 1771: ®ister_handler("edit", \&edit_table_handler, 1, 0, 1);
1.218 foxr 1772:
1.220 foxr 1773: #
1774: # Authenticate a user against the LonCAPA authentication
1775: # database. Note that there are several authentication
1776: # possibilities:
1777: # - unix - The user can be authenticated against the unix
1778: # password file.
1779: # - internal - The user can be authenticated against a purely
1780: # internal per user password file.
1781: # - kerberos - The user can be authenticated against either a kerb4 or kerb5
1782: # ticket granting authority.
1783: # - user - The person tailoring LonCAPA can supply a user authentication
1784: # mechanism that is per system.
1785: #
1786: # Parameters:
1787: # $cmd - The command that got us here.
1788: # $tail - Tail of the command (remaining parameters).
1789: # $client - File descriptor connected to client.
1790: # Returns
1791: # 0 - Requested to exit, caller should shut down.
1792: # 1 - Continue processing.
1793: # Implicit inputs:
1794: # The authentication systems describe above have their own forms of implicit
1795: # input into the authentication process that are described above.
1796: #
1797: sub authenticate_handler {
1798: my ($cmd, $tail, $client) = @_;
1799:
1800:
1801: # Regenerate the full input line
1802:
1803: my $userinput = $cmd.":".$tail;
1804:
1805: # udom - User's domain.
1806: # uname - Username.
1807: # upass - User's password.
1.396 raeburn 1808: # checkdefauth - Pass to validate_user() to try authentication
1809: # with default auth type(s) if no user account.
1.447 raeburn 1810: # clientcancheckhost - Passed by clients with functionality in lonauth.pm
1811: # to check if session can be hosted.
1.220 foxr 1812:
1.447 raeburn 1813: my ($udom, $uname, $upass, $checkdefauth, $clientcancheckhost)=split(/:/,$tail);
1.399 raeburn 1814: &Debug(" Authenticate domain = $udom, user = $uname, password = $upass, checkdefauth = $checkdefauth");
1.220 foxr 1815: chomp($upass);
1816: $upass=&unescape($upass);
1817:
1.396 raeburn 1818: my $pwdcorrect = &validate_user($udom,$uname,$upass,$checkdefauth);
1.220 foxr 1819: if($pwdcorrect) {
1.447 raeburn 1820: my $canhost = 1;
1821: unless ($clientcancheckhost) {
1.448 raeburn 1822: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1823: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1.452 raeburn 1824: my @intdoms;
1825: my $internet_names = &Apache::lonnet::get_internet_names($clientname);
1826: if (ref($internet_names) eq 'ARRAY') {
1827: @intdoms = @{$internet_names};
1828: }
1.448 raeburn 1829: unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
1.447 raeburn 1830: my ($remote,$hosted);
1831: my $remotesession = &get_usersession_config($udom,'remotesession');
1832: if (ref($remotesession) eq 'HASH') {
1833: $remote = $remotesession->{'remote'}
1834: }
1.448 raeburn 1835: my $hostedsession = &get_usersession_config($clienthomedom,'hostedsession');
1.447 raeburn 1836: if (ref($hostedsession) eq 'HASH') {
1837: $hosted = $hostedsession->{'hosted'};
1838: }
1.449 raeburn 1839: my $loncaparev = $clientversion;
1840: if ($loncaparev eq '') {
1841: $loncaparev = $Apache::lonnet::loncaparevs{$clientname};
1842: }
1.448 raeburn 1843: $canhost = &Apache::lonnet::can_host_session($udom,$clientname,
1.449 raeburn 1844: $loncaparev,
1.447 raeburn 1845: $remote,$hosted);
1846: }
1847: }
1848: if ($canhost) {
1849: &Reply( $client, "authorized\n", $userinput);
1850: } else {
1851: &Reply( $client, "not_allowed_to_host\n", $userinput);
1852: }
1.220 foxr 1853: #
1854: # Bad credentials: Failed to authorize
1855: #
1856: } else {
1857: &Failure( $client, "non_authorized\n", $userinput);
1858: }
1859:
1860: return 1;
1861: }
1.263 albertel 1862: ®ister_handler("auth", \&authenticate_handler, 1, 1, 0);
1.214 foxr 1863:
1.222 foxr 1864: #
1865: # Change a user's password. Note that this function is complicated by
1866: # the fact that a user may be authenticated in more than one way:
1867: # At present, we are not able to change the password for all types of
1868: # authentication methods. Only for:
1869: # unix - unix password or shadow passoword style authentication.
1870: # local - Locally written authentication mechanism.
1871: # For now, kerb4 and kerb5 password changes are not supported and result
1872: # in an error.
1873: # FUTURE WORK:
1874: # Support kerberos passwd changes?
1875: # Parameters:
1876: # $cmd - The command that got us here.
1877: # $tail - Tail of the command (remaining parameters).
1878: # $client - File descriptor connected to client.
1879: # Returns
1880: # 0 - Requested to exit, caller should shut down.
1881: # 1 - Continue processing.
1882: # Implicit inputs:
1883: # The authentication systems describe above have their own forms of implicit
1884: # input into the authentication process that are described above.
1885: sub change_password_handler {
1886: my ($cmd, $tail, $client) = @_;
1887:
1888: my $userinput = $cmd.":".$tail; # Reconstruct client's string.
1889:
1890: #
1891: # udom - user's domain.
1892: # uname - Username.
1893: # upass - Current password.
1894: # npass - New password.
1.346 raeburn 1895: # context - Context in which this was called
1896: # (preferences or reset_by_email).
1.428 raeburn 1897: # lonhost - HostID of server where request originated
1.222 foxr 1898:
1.428 raeburn 1899: my ($udom,$uname,$upass,$npass,$context,$lonhost)=split(/:/,$tail);
1.222 foxr 1900:
1901: $upass=&unescape($upass);
1902: $npass=&unescape($npass);
1903: &Debug("Trying to change password for $uname");
1904:
1905: # First require that the user can be authenticated with their
1.346 raeburn 1906: # old password unless context was 'reset_by_email':
1907:
1.428 raeburn 1908: my ($validated,$failure);
1.346 raeburn 1909: if ($context eq 'reset_by_email') {
1.428 raeburn 1910: if ($lonhost eq '') {
1911: $failure = 'invalid_client';
1912: } else {
1913: $validated = 1;
1914: }
1.346 raeburn 1915: } else {
1916: $validated = &validate_user($udom, $uname, $upass);
1917: }
1.222 foxr 1918: if($validated) {
1919: my $realpasswd = &get_auth_type($udom, $uname); # Defined since authd.
1920:
1921: my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
1922: if ($howpwd eq 'internal') {
1923: &Debug("internal auth");
1924: my $salt=time;
1925: $salt=substr($salt,6,2);
1926: my $ncpass=crypt($npass,$salt);
1927: if(&rewrite_password_file($udom, $uname, "internal:$ncpass")) {
1.428 raeburn 1928: my $msg="Result of password change for $uname: pwchange_success";
1929: if ($lonhost) {
1930: $msg .= " - request originated from: $lonhost";
1931: }
1932: &logthis($msg);
1.222 foxr 1933: &Reply($client, "ok\n", $userinput);
1934: } else {
1935: &logthis("Unable to open $uname passwd "
1936: ."to change password");
1937: &Failure( $client, "non_authorized\n",$userinput);
1938: }
1.346 raeburn 1939: } elsif ($howpwd eq 'unix' && $context ne 'reset_by_email') {
1.287 foxr 1940: my $result = &change_unix_password($uname, $npass);
1.222 foxr 1941: &logthis("Result of password change for $uname: ".
1.287 foxr 1942: $result);
1.387 albertel 1943: &Reply($client, \$result, $userinput);
1.222 foxr 1944: } else {
1945: # this just means that the current password mode is not
1946: # one we know how to change (e.g the kerberos auth modes or
1947: # locally written auth handler).
1948: #
1949: &Failure( $client, "auth_mode_error\n", $userinput);
1950: }
1951:
1.224 foxr 1952: } else {
1.428 raeburn 1953: if ($failure eq '') {
1954: $failure = 'non_authorized';
1955: }
1956: &Failure( $client, "$failure\n", $userinput);
1.222 foxr 1957: }
1958:
1959: return 1;
1960: }
1.263 albertel 1961: ®ister_handler("passwd", \&change_password_handler, 1, 1, 0);
1.222 foxr 1962:
1.225 foxr 1963: #
1964: # Create a new user. User in this case means a lon-capa user.
1965: # The user must either already exist in some authentication realm
1966: # like kerberos or the /etc/passwd. If not, a user completely local to
1967: # this loncapa system is created.
1968: #
1969: # Parameters:
1970: # $cmd - The command that got us here.
1971: # $tail - Tail of the command (remaining parameters).
1972: # $client - File descriptor connected to client.
1973: # Returns
1974: # 0 - Requested to exit, caller should shut down.
1975: # 1 - Continue processing.
1976: # Implicit inputs:
1977: # The authentication systems describe above have their own forms of implicit
1978: # input into the authentication process that are described above.
1979: sub add_user_handler {
1980:
1981: my ($cmd, $tail, $client) = @_;
1982:
1983:
1984: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
1985: my $userinput = $cmd.":".$tail; # Reconstruct the full request line.
1986:
1987: &Debug("cmd =".$cmd." $udom =".$udom." uname=".$uname);
1988:
1989:
1990: if($udom eq $currentdomainid) { # Reject new users for other domains...
1991:
1992: my $oldumask=umask(0077);
1993: chomp($npass);
1994: $npass=&unescape($npass);
1995: my $passfilename = &password_path($udom, $uname);
1996: &Debug("Password file created will be:".$passfilename);
1997: if (-e $passfilename) {
1998: &Failure( $client, "already_exists\n", $userinput);
1999: } else {
2000: my $fperror='';
1.264 albertel 2001: if (!&mkpath($passfilename)) {
2002: $fperror="error: ".($!+0)." mkdir failed while attempting "
2003: ."makeuser";
1.225 foxr 2004: }
2005: unless ($fperror) {
2006: my $result=&make_passwd_file($uname, $umode,$npass, $passfilename);
1.390 raeburn 2007: &Reply($client,\$result, $userinput); #BUGBUG - could be fail
1.225 foxr 2008: } else {
1.387 albertel 2009: &Failure($client, \$fperror, $userinput);
1.225 foxr 2010: }
2011: }
2012: umask($oldumask);
2013: } else {
2014: &Failure($client, "not_right_domain\n",
2015: $userinput); # Even if we are multihomed.
2016:
2017: }
2018: return 1;
2019:
2020: }
2021: ®ister_handler("makeuser", \&add_user_handler, 1, 1, 0);
2022:
2023: #
2024: # Change the authentication method of a user. Note that this may
2025: # also implicitly change the user's password if, for example, the user is
2026: # joining an existing authentication realm. Known authentication realms at
2027: # this time are:
2028: # internal - Purely internal password file (only loncapa knows this user)
2029: # local - Institutionally written authentication module.
2030: # unix - Unix user (/etc/passwd with or without /etc/shadow).
2031: # kerb4 - kerberos version 4
2032: # kerb5 - kerberos version 5
2033: #
2034: # Parameters:
2035: # $cmd - The command that got us here.
2036: # $tail - Tail of the command (remaining parameters).
2037: # $client - File descriptor connected to client.
2038: # Returns
2039: # 0 - Requested to exit, caller should shut down.
2040: # 1 - Continue processing.
2041: # Implicit inputs:
2042: # The authentication systems describe above have their own forms of implicit
2043: # input into the authentication process that are described above.
1.287 foxr 2044: # NOTE:
2045: # This is also used to change the authentication credential values (e.g. passwd).
2046: #
1.225 foxr 2047: #
2048: sub change_authentication_handler {
2049:
2050: my ($cmd, $tail, $client) = @_;
2051:
2052: my $userinput = "$cmd:$tail"; # Reconstruct user input.
2053:
2054: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2055: &Debug("cmd = ".$cmd." domain= ".$udom."uname =".$uname." umode= ".$umode);
2056: if ($udom ne $currentdomainid) {
2057: &Failure( $client, "not_right_domain\n", $client);
2058: } else {
2059:
2060: chomp($npass);
2061:
2062: $npass=&unescape($npass);
1.261 foxr 2063: my $oldauth = &get_auth_type($udom, $uname); # Get old auth info.
1.225 foxr 2064: my $passfilename = &password_path($udom, $uname);
2065: if ($passfilename) { # Not allowed to create a new user!!
1.287 foxr 2066: # If just changing the unix passwd. need to arrange to run
2067: # passwd since otherwise make_passwd_file will run
2068: # lcuseradd which fails if an account already exists
2069: # (to prevent an unscrupulous LONCAPA admin from stealing
2070: # an existing account by overwriting it as a LonCAPA account).
2071:
2072: if(($oldauth =~/^unix/) && ($umode eq "unix")) {
2073: my $result = &change_unix_password($uname, $npass);
2074: &logthis("Result of password change for $uname: ".$result);
2075: if ($result eq "ok") {
1.390 raeburn 2076: &Reply($client, \$result);
1.288 albertel 2077: } else {
1.387 albertel 2078: &Failure($client, \$result);
1.287 foxr 2079: }
1.288 albertel 2080: } else {
1.287 foxr 2081: my $result=&make_passwd_file($uname, $umode,$npass,$passfilename);
2082: #
2083: # If the current auth mode is internal, and the old auth mode was
2084: # unix, or krb*, and the user is an author for this domain,
2085: # re-run manage_permissions for that role in order to be able
2086: # to take ownership of the construction space back to www:www
2087: #
2088:
2089:
2090: if( (($oldauth =~ /^unix/) && ($umode eq "internal")) ||
2091: (($oldauth =~ /^internal/) && ($umode eq "unix")) ) {
2092: if(&is_author($udom, $uname)) {
2093: &Debug(" Need to manage author permissions...");
2094: &manage_permissions("/$udom/_au", $udom, $uname, "$umode:");
2095: }
1.261 foxr 2096: }
1.387 albertel 2097: &Reply($client, \$result, $userinput);
1.261 foxr 2098: }
2099:
2100:
1.225 foxr 2101: } else {
1.251 foxr 2102: &Failure($client, "non_authorized\n", $userinput); # Fail the user now.
1.225 foxr 2103: }
2104: }
2105: return 1;
2106: }
2107: ®ister_handler("changeuserauth", \&change_authentication_handler, 1,1, 0);
2108:
2109: #
2110: # Determines if this is the home server for a user. The home server
2111: # for a user will have his/her lon-capa passwd file. Therefore all we need
2112: # to do is determine if this file exists.
2113: #
2114: # Parameters:
2115: # $cmd - The command that got us here.
2116: # $tail - Tail of the command (remaining parameters).
2117: # $client - File descriptor connected to client.
2118: # Returns
2119: # 0 - Requested to exit, caller should shut down.
2120: # 1 - Continue processing.
2121: # Implicit inputs:
2122: # The authentication systems describe above have their own forms of implicit
2123: # input into the authentication process that are described above.
2124: #
2125: sub is_home_handler {
2126: my ($cmd, $tail, $client) = @_;
2127:
2128: my $userinput = "$cmd:$tail";
2129:
2130: my ($udom,$uname)=split(/:/,$tail);
2131: chomp($uname);
2132: my $passfile = &password_filename($udom, $uname);
2133: if($passfile) {
2134: &Reply( $client, "found\n", $userinput);
2135: } else {
2136: &Failure($client, "not_found\n", $userinput);
2137: }
2138: return 1;
2139: }
2140: ®ister_handler("home", \&is_home_handler, 0,1,0);
2141:
2142: #
1.434 www 2143: # Process an update request for a resource.
2144: # A resource has been modified that we hold a subscription to.
1.225 foxr 2145: # If the resource is not local, then we must update, or at least invalidate our
2146: # cached copy of the resource.
2147: # Parameters:
2148: # $cmd - The command that got us here.
2149: # $tail - Tail of the command (remaining parameters).
2150: # $client - File descriptor connected to client.
2151: # Returns
2152: # 0 - Requested to exit, caller should shut down.
2153: # 1 - Continue processing.
2154: # Implicit inputs:
2155: # The authentication systems describe above have their own forms of implicit
2156: # input into the authentication process that are described above.
2157: #
2158: sub update_resource_handler {
2159:
2160: my ($cmd, $tail, $client) = @_;
2161:
2162: my $userinput = "$cmd:$tail";
2163:
2164: my $fname= $tail; # This allows interactive testing
2165:
2166:
2167: my $ownership=ishome($fname);
2168: if ($ownership eq 'not_owner') {
2169: if (-e $fname) {
1.434 www 2170: # Delete preview file, if exists
2171: unlink("$fname.tmp");
2172: # Get usage stats
1.225 foxr 2173: my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
2174: $atime,$mtime,$ctime,$blksize,$blocks)=stat($fname);
2175: my $now=time;
2176: my $since=$now-$atime;
1.434 www 2177: # If the file has not been used within lonExpire seconds,
2178: # unsubscribe from it and delete local copy
1.225 foxr 2179: if ($since>$perlvar{'lonExpire'}) {
1.365 albertel 2180: my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
1.308 albertel 2181: &devalidate_meta_cache($fname);
1.225 foxr 2182: unlink("$fname");
1.334 albertel 2183: unlink("$fname.meta");
1.225 foxr 2184: } else {
1.434 www 2185: # Yes, this is in active use. Get a fresh copy. Since it might be in
2186: # very active use and huge (like a movie), copy it to "in.transfer" filename first.
1.225 foxr 2187: my $transname="$fname.in.transfer";
1.365 albertel 2188: my $remoteurl=&Apache::lonnet::reply("sub:$fname","$clientname");
1.225 foxr 2189: my $response;
1.455 www 2190: # FIXME: cannot replicate files that take more than two minutes to transfer?
2191: # alarm(120);
2192: # FIXME: this should use the LWP mechanism, not internal alarms.
2193: alarm(1200);
1.225 foxr 2194: {
2195: my $ua=new LWP::UserAgent;
2196: my $request=new HTTP::Request('GET',"$remoteurl");
2197: $response=$ua->request($request,$transname);
2198: }
2199: alarm(0);
2200: if ($response->is_error()) {
1.455 www 2201: # FIXME: we should probably clean up here instead of just whine
1.225 foxr 2202: unlink($transname);
2203: my $message=$response->status_line;
2204: &logthis("LWP GET: $message for $fname ($remoteurl)");
2205: } else {
2206: if ($remoteurl!~/\.meta$/) {
1.455 www 2207: # FIXME: isn't there an internal LWP mechanism for this?
1.225 foxr 2208: alarm(120);
2209: {
2210: my $ua=new LWP::UserAgent;
2211: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2212: my $mresponse=$ua->request($mrequest,$fname.'.meta');
2213: if ($mresponse->is_error()) {
2214: unlink($fname.'.meta');
2215: }
2216: }
2217: alarm(0);
2218: }
1.434 www 2219: # we successfully transfered, copy file over to real name
1.225 foxr 2220: rename($transname,$fname);
1.308 albertel 2221: &devalidate_meta_cache($fname);
1.225 foxr 2222: }
2223: }
2224: &Reply( $client, "ok\n", $userinput);
2225: } else {
2226: &Failure($client, "not_found\n", $userinput);
2227: }
2228: } else {
2229: &Failure($client, "rejected\n", $userinput);
2230: }
2231: return 1;
2232: }
2233: ®ister_handler("update", \&update_resource_handler, 0 ,1, 0);
2234:
1.308 albertel 2235: sub devalidate_meta_cache {
2236: my ($url) = @_;
2237: use Cache::Memcached;
2238: my $memcache = new Cache::Memcached({'servers'=>['127.0.0.1:11211']});
1.365 albertel 2239: $url = &Apache::lonnet::declutter($url);
1.308 albertel 2240: $url =~ s-\.meta$--;
2241: my $id = &escape('meta:'.$url);
2242: $memcache->delete($id);
2243: }
2244:
1.225 foxr 2245: #
1.226 foxr 2246: # Fetch a user file from a remote server to the user's home directory
2247: # userfiles subdir.
1.225 foxr 2248: # Parameters:
2249: # $cmd - The command that got us here.
2250: # $tail - Tail of the command (remaining parameters).
2251: # $client - File descriptor connected to client.
2252: # Returns
2253: # 0 - Requested to exit, caller should shut down.
2254: # 1 - Continue processing.
2255: #
2256: sub fetch_user_file_handler {
2257:
2258: my ($cmd, $tail, $client) = @_;
2259:
2260: my $userinput = "$cmd:$tail";
2261: my $fname = $tail;
1.232 foxr 2262: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
1.225 foxr 2263: my $udir=&propath($udom,$uname).'/userfiles';
2264: unless (-e $udir) {
2265: mkdir($udir,0770);
2266: }
1.232 foxr 2267: Debug("fetch user file for $fname");
1.225 foxr 2268: if (-e $udir) {
2269: $ufile=~s/^[\.\~]+//;
1.232 foxr 2270:
2271: # IF necessary, create the path right down to the file.
2272: # Note that any regular files in the way of this path are
2273: # wiped out to deal with some earlier folly of mine.
2274:
1.267 raeburn 2275: if (!&mkpath($udir.'/'.$ufile)) {
1.264 albertel 2276: &Failure($client, "unable_to_create\n", $userinput);
1.232 foxr 2277: }
2278:
1.225 foxr 2279: my $destname=$udir.'/'.$ufile;
2280: my $transname=$udir.'/'.$ufile.'.in.transit';
2281: my $remoteurl='http://'.$clientip.'/userfiles/'.$fname;
2282: my $response;
1.232 foxr 2283: Debug("Remote URL : $remoteurl Transfername $transname Destname: $destname");
1.225 foxr 2284: alarm(120);
2285: {
2286: my $ua=new LWP::UserAgent;
2287: my $request=new HTTP::Request('GET',"$remoteurl");
2288: $response=$ua->request($request,$transname);
2289: }
2290: alarm(0);
2291: if ($response->is_error()) {
2292: unlink($transname);
2293: my $message=$response->status_line;
2294: &logthis("LWP GET: $message for $fname ($remoteurl)");
2295: &Failure($client, "failed\n", $userinput);
2296: } else {
1.232 foxr 2297: Debug("Renaming $transname to $destname");
1.225 foxr 2298: if (!rename($transname,$destname)) {
2299: &logthis("Unable to move $transname to $destname");
2300: unlink($transname);
2301: &Failure($client, "failed\n", $userinput);
2302: } else {
2303: &Reply($client, "ok\n", $userinput);
2304: }
2305: }
2306: } else {
2307: &Failure($client, "not_home\n", $userinput);
2308: }
2309: return 1;
2310: }
2311: ®ister_handler("fetchuserfile", \&fetch_user_file_handler, 0, 1, 0);
2312:
1.226 foxr 2313: #
2314: # Remove a file from a user's home directory userfiles subdirectory.
2315: # Parameters:
2316: # cmd - the Lond request keyword that got us here.
2317: # tail - the part of the command past the keyword.
2318: # client- File descriptor connected with the client.
2319: #
2320: # Returns:
2321: # 1 - Continue processing.
2322: sub remove_user_file_handler {
2323: my ($cmd, $tail, $client) = @_;
2324:
2325: my ($fname) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2326:
2327: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
2328: if ($ufile =~m|/\.\./|) {
2329: # any files paths with /../ in them refuse
2330: # to deal with
2331: &Failure($client, "refused\n", "$cmd:$tail");
2332: } else {
2333: my $udir = &propath($udom,$uname);
2334: if (-e $udir) {
2335: my $file=$udir.'/userfiles/'.$ufile;
2336: if (-e $file) {
1.253 foxr 2337: #
2338: # If the file is a regular file unlink is fine...
2339: # However it's possible the client wants a dir.
2340: # removed, in which case rmdir is more approprate:
2341: #
1.240 banghart 2342: if (-f $file){
1.241 albertel 2343: unlink($file);
2344: } elsif(-d $file) {
2345: rmdir($file);
1.240 banghart 2346: }
1.226 foxr 2347: if (-e $file) {
1.253 foxr 2348: # File is still there after we deleted it ?!?
2349:
1.226 foxr 2350: &Failure($client, "failed\n", "$cmd:$tail");
2351: } else {
2352: &Reply($client, "ok\n", "$cmd:$tail");
2353: }
2354: } else {
2355: &Failure($client, "not_found\n", "$cmd:$tail");
2356: }
2357: } else {
2358: &Failure($client, "not_home\n", "$cmd:$tail");
2359: }
2360: }
2361: return 1;
2362: }
2363: ®ister_handler("removeuserfile", \&remove_user_file_handler, 0,1,0);
2364:
1.236 albertel 2365: #
2366: # make a directory in a user's home directory userfiles subdirectory.
2367: # Parameters:
2368: # cmd - the Lond request keyword that got us here.
2369: # tail - the part of the command past the keyword.
2370: # client- File descriptor connected with the client.
2371: #
2372: # Returns:
2373: # 1 - Continue processing.
2374: sub mkdir_user_file_handler {
2375: my ($cmd, $tail, $client) = @_;
2376:
2377: my ($dir) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2378: $dir=&unescape($dir);
2379: my ($udom,$uname,$ufile) = ($dir =~ m|^([^/]+)/([^/]+)/(.+)$|);
2380: if ($ufile =~m|/\.\./|) {
2381: # any files paths with /../ in them refuse
2382: # to deal with
2383: &Failure($client, "refused\n", "$cmd:$tail");
2384: } else {
2385: my $udir = &propath($udom,$uname);
2386: if (-e $udir) {
1.264 albertel 2387: my $newdir=$udir.'/userfiles/'.$ufile.'/';
2388: if (!&mkpath($newdir)) {
2389: &Failure($client, "failed\n", "$cmd:$tail");
1.236 albertel 2390: }
1.264 albertel 2391: &Reply($client, "ok\n", "$cmd:$tail");
1.236 albertel 2392: } else {
2393: &Failure($client, "not_home\n", "$cmd:$tail");
2394: }
2395: }
2396: return 1;
2397: }
2398: ®ister_handler("mkdiruserfile", \&mkdir_user_file_handler, 0,1,0);
2399:
1.237 albertel 2400: #
2401: # rename a file in a user's home directory userfiles subdirectory.
2402: # Parameters:
2403: # cmd - the Lond request keyword that got us here.
2404: # tail - the part of the command past the keyword.
2405: # client- File descriptor connected with the client.
2406: #
2407: # Returns:
2408: # 1 - Continue processing.
2409: sub rename_user_file_handler {
2410: my ($cmd, $tail, $client) = @_;
2411:
2412: my ($udom,$uname,$old,$new) = split(/:/, $tail);
2413: $old=&unescape($old);
2414: $new=&unescape($new);
2415: if ($new =~m|/\.\./| || $old =~m|/\.\./|) {
2416: # any files paths with /../ in them refuse to deal with
2417: &Failure($client, "refused\n", "$cmd:$tail");
2418: } else {
2419: my $udir = &propath($udom,$uname);
2420: if (-e $udir) {
2421: my $oldfile=$udir.'/userfiles/'.$old;
2422: my $newfile=$udir.'/userfiles/'.$new;
2423: if (-e $newfile) {
2424: &Failure($client, "exists\n", "$cmd:$tail");
2425: } elsif (! -e $oldfile) {
2426: &Failure($client, "not_found\n", "$cmd:$tail");
2427: } else {
2428: if (!rename($oldfile,$newfile)) {
2429: &Failure($client, "failed\n", "$cmd:$tail");
2430: } else {
2431: &Reply($client, "ok\n", "$cmd:$tail");
2432: }
2433: }
2434: } else {
2435: &Failure($client, "not_home\n", "$cmd:$tail");
2436: }
2437: }
2438: return 1;
2439: }
2440: ®ister_handler("renameuserfile", \&rename_user_file_handler, 0,1,0);
2441:
1.227 foxr 2442: #
1.382 albertel 2443: # Checks if the specified user has an active session on the server
2444: # return ok if so, not_found if not
2445: #
2446: # Parameters:
2447: # cmd - The request keyword that dispatched to tus.
2448: # tail - The tail of the request (colon separated parameters).
2449: # client - Filehandle open on the client.
2450: # Return:
2451: # 1.
2452: sub user_has_session_handler {
2453: my ($cmd, $tail, $client) = @_;
2454:
2455: my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail));
2456:
2457: opendir(DIR,$perlvar{'lonIDsDir'});
2458: my $filename;
2459: while ($filename=readdir(DIR)) {
2460: last if ($filename=~/^\Q$uname\E_\d+_\Q$udom\E_/);
2461: }
2462: if ($filename) {
2463: &Reply($client, "ok\n", "$cmd:$tail");
2464: } else {
2465: &Failure($client, "not_found\n", "$cmd:$tail");
2466: }
2467: return 1;
2468:
2469: }
2470: ®ister_handler("userhassession", \&user_has_session_handler, 0,1,0);
2471:
2472: #
1.263 albertel 2473: # Authenticate access to a user file by checking that the token the user's
2474: # passed also exists in their session file
1.227 foxr 2475: #
2476: # Parameters:
2477: # cmd - The request keyword that dispatched to tus.
2478: # tail - The tail of the request (colon separated parameters).
2479: # client - Filehandle open on the client.
2480: # Return:
2481: # 1.
2482: sub token_auth_user_file_handler {
2483: my ($cmd, $tail, $client) = @_;
2484:
2485: my ($fname, $session) = split(/:/, $tail);
2486:
2487: chomp($session);
1.393 raeburn 2488: my $reply="non_auth";
1.343 albertel 2489: my $file = $perlvar{'lonIDsDir'}.'/'.$session.'.id';
2490: if (open(ENVIN,"$file")) {
1.332 albertel 2491: flock(ENVIN,LOCK_SH);
1.343 albertel 2492: tie(my %disk_env,'GDBM_File',"$file",&GDBM_READER(),0640);
2493: if (exists($disk_env{"userfile.$fname"})) {
1.393 raeburn 2494: $reply="ok";
1.343 albertel 2495: } else {
2496: foreach my $envname (keys(%disk_env)) {
2497: if ($envname=~ m|^userfile\.\Q$fname\E|) {
1.393 raeburn 2498: $reply="ok";
1.343 albertel 2499: last;
2500: }
2501: }
1.227 foxr 2502: }
1.343 albertel 2503: untie(%disk_env);
1.227 foxr 2504: close(ENVIN);
1.387 albertel 2505: &Reply($client, \$reply, "$cmd:$tail");
1.227 foxr 2506: } else {
2507: &Failure($client, "invalid_token\n", "$cmd:$tail");
2508: }
2509: return 1;
2510:
2511: }
2512: ®ister_handler("tokenauthuserfile", \&token_auth_user_file_handler, 0,1,0);
1.229 foxr 2513:
2514: #
2515: # Unsubscribe from a resource.
2516: #
2517: # Parameters:
2518: # $cmd - The command that got us here.
2519: # $tail - Tail of the command (remaining parameters).
2520: # $client - File descriptor connected to client.
2521: # Returns
2522: # 0 - Requested to exit, caller should shut down.
2523: # 1 - Continue processing.
2524: #
2525: sub unsubscribe_handler {
2526: my ($cmd, $tail, $client) = @_;
2527:
2528: my $userinput= "$cmd:$tail";
2529:
2530: my ($fname) = split(/:/,$tail); # Split in case there's extrs.
2531:
2532: &Debug("Unsubscribing $fname");
2533: if (-e $fname) {
2534: &Debug("Exists");
2535: &Reply($client, &unsub($fname,$clientip), $userinput);
2536: } else {
2537: &Failure($client, "not_found\n", $userinput);
2538: }
2539: return 1;
2540: }
2541: ®ister_handler("unsub", \&unsubscribe_handler, 0, 1, 0);
1.263 albertel 2542:
1.230 foxr 2543: # Subscribe to a resource
2544: #
2545: # Parameters:
2546: # $cmd - The command that got us here.
2547: # $tail - Tail of the command (remaining parameters).
2548: # $client - File descriptor connected to client.
2549: # Returns
2550: # 0 - Requested to exit, caller should shut down.
2551: # 1 - Continue processing.
2552: #
2553: sub subscribe_handler {
2554: my ($cmd, $tail, $client)= @_;
2555:
2556: my $userinput = "$cmd:$tail";
2557:
2558: &Reply( $client, &subscribe($userinput,$clientip), $userinput);
2559:
2560: return 1;
2561: }
2562: ®ister_handler("sub", \&subscribe_handler, 0, 1, 0);
2563:
2564: #
1.379 albertel 2565: # Determine the latest version of a resource (it looks for the highest
2566: # past version and then returns that +1)
1.230 foxr 2567: #
2568: # Parameters:
2569: # $cmd - The command that got us here.
2570: # $tail - Tail of the command (remaining parameters).
1.379 albertel 2571: # (Should consist of an absolute path to a file)
1.230 foxr 2572: # $client - File descriptor connected to client.
2573: # Returns
2574: # 0 - Requested to exit, caller should shut down.
2575: # 1 - Continue processing.
2576: #
2577: sub current_version_handler {
2578: my ($cmd, $tail, $client) = @_;
2579:
2580: my $userinput= "$cmd:$tail";
2581:
2582: my $fname = $tail;
2583: &Reply( $client, ¤tversion($fname)."\n", $userinput);
2584: return 1;
2585:
2586: }
2587: ®ister_handler("currentversion", \¤t_version_handler, 0, 1, 0);
2588:
2589: # Make an entry in a user's activity log.
2590: #
2591: # Parameters:
2592: # $cmd - The command that got us here.
2593: # $tail - Tail of the command (remaining parameters).
2594: # $client - File descriptor connected to client.
2595: # Returns
2596: # 0 - Requested to exit, caller should shut down.
2597: # 1 - Continue processing.
2598: #
2599: sub activity_log_handler {
2600: my ($cmd, $tail, $client) = @_;
2601:
2602:
2603: my $userinput= "$cmd:$tail";
2604:
2605: my ($udom,$uname,$what)=split(/:/,$tail);
2606: chomp($what);
2607: my $proname=&propath($udom,$uname);
2608: my $now=time;
2609: my $hfh;
2610: if ($hfh=IO::File->new(">>$proname/activity.log")) {
2611: print $hfh "$now:$clientname:$what\n";
2612: &Reply( $client, "ok\n", $userinput);
2613: } else {
2614: &Failure($client, "error: ".($!+0)." IO::File->new Failed "
2615: ."while attempting log\n",
2616: $userinput);
2617: }
2618:
2619: return 1;
2620: }
1.263 albertel 2621: ®ister_handler("log", \&activity_log_handler, 0, 1, 0);
1.230 foxr 2622:
2623: #
2624: # Put a namespace entry in a user profile hash.
2625: # My druthers would be for this to be an encrypted interaction too.
2626: # anything that might be an inadvertent covert channel about either
2627: # user authentication or user personal information....
2628: #
2629: # Parameters:
2630: # $cmd - The command that got us here.
2631: # $tail - Tail of the command (remaining parameters).
2632: # $client - File descriptor connected to client.
2633: # Returns
2634: # 0 - Requested to exit, caller should shut down.
2635: # 1 - Continue processing.
2636: #
2637: sub put_user_profile_entry {
2638: my ($cmd, $tail, $client) = @_;
1.229 foxr 2639:
1.230 foxr 2640: my $userinput = "$cmd:$tail";
2641:
1.242 raeburn 2642: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
1.230 foxr 2643: if ($namespace ne 'roles') {
2644: chomp($what);
2645: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2646: &GDBM_WRCREAT(),"P",$what);
2647: if($hashref) {
2648: my @pairs=split(/\&/,$what);
2649: foreach my $pair (@pairs) {
2650: my ($key,$value)=split(/=/,$pair);
2651: $hashref->{$key}=$value;
2652: }
1.311 albertel 2653: if (&untie_user_hash($hashref)) {
1.230 foxr 2654: &Reply( $client, "ok\n", $userinput);
2655: } else {
2656: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
2657: "while attempting put\n",
2658: $userinput);
2659: }
2660: } else {
1.316 albertel 2661: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.230 foxr 2662: "while attempting put\n", $userinput);
2663: }
2664: } else {
2665: &Failure( $client, "refused\n", $userinput);
2666: }
2667:
2668: return 1;
2669: }
2670: ®ister_handler("put", \&put_user_profile_entry, 0, 1, 0);
2671:
1.283 albertel 2672: # Put a piece of new data in hash, returns error if entry already exists
2673: # Parameters:
2674: # $cmd - The command that got us here.
2675: # $tail - Tail of the command (remaining parameters).
2676: # $client - File descriptor connected to client.
2677: # Returns
2678: # 0 - Requested to exit, caller should shut down.
2679: # 1 - Continue processing.
2680: #
2681: sub newput_user_profile_entry {
2682: my ($cmd, $tail, $client) = @_;
2683:
2684: my $userinput = "$cmd:$tail";
2685:
2686: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
2687: if ($namespace eq 'roles') {
2688: &Failure( $client, "refused\n", $userinput);
2689: return 1;
2690: }
2691:
2692: chomp($what);
2693:
2694: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2695: &GDBM_WRCREAT(),"N",$what);
2696: if(!$hashref) {
1.316 albertel 2697: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.283 albertel 2698: "while attempting put\n", $userinput);
2699: return 1;
2700: }
2701:
2702: my @pairs=split(/\&/,$what);
2703: foreach my $pair (@pairs) {
2704: my ($key,$value)=split(/=/,$pair);
2705: if (exists($hashref->{$key})) {
2706: &Failure($client, "key_exists: ".$key."\n",$userinput);
2707: return 1;
2708: }
2709: }
2710:
2711: foreach my $pair (@pairs) {
2712: my ($key,$value)=split(/=/,$pair);
2713: $hashref->{$key}=$value;
2714: }
2715:
1.311 albertel 2716: if (&untie_user_hash($hashref)) {
1.283 albertel 2717: &Reply( $client, "ok\n", $userinput);
2718: } else {
2719: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
2720: "while attempting put\n",
2721: $userinput);
2722: }
2723: return 1;
2724: }
2725: ®ister_handler("newput", \&newput_user_profile_entry, 0, 1, 0);
2726:
1.230 foxr 2727: #
2728: # Increment a profile entry in the user history file.
2729: # The history contains keyword value pairs. In this case,
2730: # The value itself is a pair of numbers. The first, the current value
2731: # the second an increment that this function applies to the current
2732: # value.
2733: #
2734: # Parameters:
2735: # $cmd - The command that got us here.
2736: # $tail - Tail of the command (remaining parameters).
2737: # $client - File descriptor connected to client.
2738: # Returns
2739: # 0 - Requested to exit, caller should shut down.
2740: # 1 - Continue processing.
2741: #
2742: sub increment_user_value_handler {
2743: my ($cmd, $tail, $client) = @_;
2744:
2745: my $userinput = "$cmd:$tail";
2746:
2747: my ($udom,$uname,$namespace,$what) =split(/:/,$tail);
2748: if ($namespace ne 'roles') {
2749: chomp($what);
2750: my $hashref = &tie_user_hash($udom, $uname,
2751: $namespace, &GDBM_WRCREAT(),
2752: "P",$what);
2753: if ($hashref) {
2754: my @pairs=split(/\&/,$what);
2755: foreach my $pair (@pairs) {
2756: my ($key,$value)=split(/=/,$pair);
1.284 raeburn 2757: $value = &unescape($value);
1.230 foxr 2758: # We could check that we have a number...
2759: if (! defined($value) || $value eq '') {
2760: $value = 1;
2761: }
2762: $hashref->{$key}+=$value;
1.284 raeburn 2763: if ($namespace eq 'nohist_resourcetracker') {
2764: if ($hashref->{$key} < 0) {
2765: $hashref->{$key} = 0;
2766: }
2767: }
1.230 foxr 2768: }
1.311 albertel 2769: if (&untie_user_hash($hashref)) {
1.230 foxr 2770: &Reply( $client, "ok\n", $userinput);
2771: } else {
2772: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
2773: "while attempting inc\n", $userinput);
2774: }
2775: } else {
2776: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
2777: "while attempting inc\n", $userinput);
2778: }
2779: } else {
2780: &Failure($client, "refused\n", $userinput);
2781: }
2782:
2783: return 1;
2784: }
2785: ®ister_handler("inc", \&increment_user_value_handler, 0, 1, 0);
2786:
2787: #
2788: # Put a new role for a user. Roles are LonCAPA's packaging of permissions.
2789: # Each 'role' a user has implies a set of permissions. Adding a new role
2790: # for a person grants the permissions packaged with that role
2791: # to that user when the role is selected.
2792: #
2793: # Parameters:
2794: # $cmd - The command string (rolesput).
2795: # $tail - The remainder of the request line. For rolesput this
2796: # consists of a colon separated list that contains:
2797: # The domain and user that is granting the role (logged).
2798: # The domain and user that is getting the role.
2799: # The roles being granted as a set of & separated pairs.
2800: # each pair a key value pair.
2801: # $client - File descriptor connected to the client.
2802: # Returns:
2803: # 0 - If the daemon should exit
2804: # 1 - To continue processing.
2805: #
2806: #
2807: sub roles_put_handler {
2808: my ($cmd, $tail, $client) = @_;
2809:
2810: my $userinput = "$cmd:$tail";
2811:
2812: my ( $exedom, $exeuser, $udom, $uname, $what) = split(/:/,$tail);
2813:
2814:
2815: my $namespace='roles';
2816: chomp($what);
2817: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2818: &GDBM_WRCREAT(), "P",
2819: "$exedom:$exeuser:$what");
2820: #
2821: # Log the attempt to set a role. The {}'s here ensure that the file
2822: # handle is open for the minimal amount of time. Since the flush
2823: # is done on close this improves the chances the log will be an un-
2824: # corrupted ordered thing.
2825: if ($hashref) {
1.261 foxr 2826: my $pass_entry = &get_auth_type($udom, $uname);
2827: my ($auth_type,$pwd) = split(/:/, $pass_entry);
2828: $auth_type = $auth_type.":";
1.230 foxr 2829: my @pairs=split(/\&/,$what);
2830: foreach my $pair (@pairs) {
2831: my ($key,$value)=split(/=/,$pair);
2832: &manage_permissions($key, $udom, $uname,
1.260 foxr 2833: $auth_type);
1.230 foxr 2834: $hashref->{$key}=$value;
2835: }
1.311 albertel 2836: if (&untie_user_hash($hashref)) {
1.230 foxr 2837: &Reply($client, "ok\n", $userinput);
2838: } else {
2839: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
2840: "while attempting rolesput\n", $userinput);
2841: }
2842: } else {
2843: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
2844: "while attempting rolesput\n", $userinput);
2845: }
2846: return 1;
2847: }
2848: ®ister_handler("rolesput", \&roles_put_handler, 1,1,0); # Encoded client only.
2849:
2850: #
1.231 foxr 2851: # Deletes (removes) a role for a user. This is equivalent to removing
2852: # a permissions package associated with the role from the user's profile.
2853: #
2854: # Parameters:
2855: # $cmd - The command (rolesdel)
2856: # $tail - The remainder of the request line. This consists
2857: # of:
2858: # The domain and user requesting the change (logged)
2859: # The domain and user being changed.
2860: # The roles being revoked. These are shipped to us
2861: # as a bunch of & separated role name keywords.
2862: # $client - The file handle open on the client.
2863: # Returns:
2864: # 1 - Continue processing
2865: # 0 - Exit.
2866: #
2867: sub roles_delete_handler {
2868: my ($cmd, $tail, $client) = @_;
2869:
2870: my $userinput = "$cmd:$tail";
2871:
2872: my ($exedom,$exeuser,$udom,$uname,$what)=split(/:/,$tail);
2873: &Debug("cmd = ".$cmd." exedom= ".$exedom."user = ".$exeuser." udom=".$udom.
2874: "what = ".$what);
2875: my $namespace='roles';
2876: chomp($what);
2877: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2878: &GDBM_WRCREAT(), "D",
2879: "$exedom:$exeuser:$what");
2880:
2881: if ($hashref) {
2882: my @rolekeys=split(/\&/,$what);
2883:
2884: foreach my $key (@rolekeys) {
2885: delete $hashref->{$key};
2886: }
1.315 albertel 2887: if (&untie_user_hash($hashref)) {
1.231 foxr 2888: &Reply($client, "ok\n", $userinput);
2889: } else {
2890: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
2891: "while attempting rolesdel\n", $userinput);
2892: }
2893: } else {
2894: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
2895: "while attempting rolesdel\n", $userinput);
2896: }
2897:
2898: return 1;
2899: }
2900: ®ister_handler("rolesdel", \&roles_delete_handler, 1,1, 0); # Encoded client only
2901:
2902: # Unencrypted get from a user's profile database. See
2903: # GetProfileEntryEncrypted for a version that does end-to-end encryption.
2904: # This function retrieves a keyed item from a specific named database in the
2905: # user's directory.
2906: #
2907: # Parameters:
2908: # $cmd - Command request keyword (get).
2909: # $tail - Tail of the command. This is a colon separated list
2910: # consisting of the domain and username that uniquely
2911: # identifies the profile,
2912: # The 'namespace' which selects the gdbm file to
2913: # do the lookup in,
2914: # & separated list of keys to lookup. Note that
2915: # the values are returned as an & separated list too.
2916: # $client - File descriptor open on the client.
2917: # Returns:
2918: # 1 - Continue processing.
2919: # 0 - Exit.
2920: #
2921: sub get_profile_entry {
2922: my ($cmd, $tail, $client) = @_;
2923:
2924: my $userinput= "$cmd:$tail";
2925:
2926: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
2927: chomp($what);
1.255 foxr 2928:
1.390 raeburn 2929:
1.255 foxr 2930: my $replystring = read_profile($udom, $uname, $namespace, $what);
2931: my ($first) = split(/:/,$replystring);
2932: if($first ne "error") {
1.387 albertel 2933: &Reply($client, \$replystring, $userinput);
1.231 foxr 2934: } else {
1.255 foxr 2935: &Failure($client, $replystring." while attempting get\n", $userinput);
1.231 foxr 2936: }
2937: return 1;
1.255 foxr 2938:
2939:
1.231 foxr 2940: }
2941: ®ister_handler("get", \&get_profile_entry, 0,1,0);
2942:
2943: #
2944: # Process the encrypted get request. Note that the request is sent
2945: # in clear, but the reply is encrypted. This is a small covert channel:
2946: # information about the sensitive keys is given to the snooper. Just not
2947: # information about the values of the sensitive key. Hmm if I wanted to
2948: # know these I'd snoop for the egets. Get the profile item names from them
2949: # and then issue a get for them since there's no enforcement of the
2950: # requirement of an encrypted get for particular profile items. If I
2951: # were re-doing this, I'd force the request to be encrypted as well as the
2952: # reply. I'd also just enforce encrypted transactions for all gets since
2953: # that would prevent any covert channel snooping.
2954: #
2955: # Parameters:
2956: # $cmd - Command keyword of request (eget).
2957: # $tail - Tail of the command. See GetProfileEntry
# for more information about this.
2958: # $client - File open on the client.
2959: # Returns:
2960: # 1 - Continue processing
2961: # 0 - server should exit.
2962: sub get_profile_entry_encrypted {
2963: my ($cmd, $tail, $client) = @_;
2964:
2965: my $userinput = "$cmd:$tail";
2966:
1.339 albertel 2967: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
1.231 foxr 2968: chomp($what);
1.255 foxr 2969: my $qresult = read_profile($udom, $uname, $namespace, $what);
2970: my ($first) = split(/:/, $qresult);
2971: if($first ne "error") {
2972:
2973: if ($cipher) {
2974: my $cmdlength=length($qresult);
2975: $qresult.=" ";
2976: my $encqresult='';
2977: for(my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
2978: $encqresult.= unpack("H16",
2979: $cipher->encrypt(substr($qresult,
2980: $encidx,
2981: 8)));
2982: }
2983: &Reply( $client, "enc:$cmdlength:$encqresult\n", $userinput);
2984: } else {
1.231 foxr 2985: &Failure( $client, "error:no_key\n", $userinput);
2986: }
2987: } else {
1.255 foxr 2988: &Failure($client, "$qresult while attempting eget\n", $userinput);
2989:
1.231 foxr 2990: }
2991:
2992: return 1;
2993: }
1.255 foxr 2994: ®ister_handler("eget", \&get_profile_entry_encrypted, 0, 1, 0);
1.263 albertel 2995:
1.231 foxr 2996: #
2997: # Deletes a key in a user profile database.
2998: #
2999: # Parameters:
3000: # $cmd - Command keyword (del).
3001: # $tail - Command tail. IN this case a colon
3002: # separated list containing:
3003: # The domain and user that identifies uniquely
3004: # the identity of the user.
3005: # The profile namespace (name of the profile
3006: # database file).
3007: # & separated list of keywords to delete.
3008: # $client - File open on client socket.
3009: # Returns:
3010: # 1 - Continue processing
3011: # 0 - Exit server.
3012: #
3013: #
3014: sub delete_profile_entry {
3015: my ($cmd, $tail, $client) = @_;
3016:
3017: my $userinput = "cmd:$tail";
3018:
3019: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3020: chomp($what);
3021: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3022: &GDBM_WRCREAT(),
3023: "D",$what);
3024: if ($hashref) {
3025: my @keys=split(/\&/,$what);
3026: foreach my $key (@keys) {
3027: delete($hashref->{$key});
3028: }
1.315 albertel 3029: if (&untie_user_hash($hashref)) {
1.231 foxr 3030: &Reply($client, "ok\n", $userinput);
3031: } else {
3032: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3033: "while attempting del\n", $userinput);
3034: }
3035: } else {
3036: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3037: "while attempting del\n", $userinput);
3038: }
3039: return 1;
3040: }
3041: ®ister_handler("del", \&delete_profile_entry, 0, 1, 0);
1.263 albertel 3042:
1.231 foxr 3043: #
3044: # List the set of keys that are defined in a profile database file.
3045: # A successful reply from this will contain an & separated list of
3046: # the keys.
3047: # Parameters:
3048: # $cmd - Command request (keys).
3049: # $tail - Remainder of the request, a colon separated
3050: # list containing domain/user that identifies the
3051: # user being queried, and the database namespace
3052: # (database filename essentially).
3053: # $client - File open on the client.
3054: # Returns:
3055: # 1 - Continue processing.
3056: # 0 - Exit the server.
3057: #
3058: sub get_profile_keys {
3059: my ($cmd, $tail, $client) = @_;
3060:
3061: my $userinput = "$cmd:$tail";
3062:
3063: my ($udom,$uname,$namespace)=split(/:/,$tail);
3064: my $qresult='';
3065: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3066: &GDBM_READER());
3067: if ($hashref) {
3068: foreach my $key (keys %$hashref) {
3069: $qresult.="$key&";
3070: }
1.315 albertel 3071: if (&untie_user_hash($hashref)) {
1.231 foxr 3072: $qresult=~s/\&$//;
1.387 albertel 3073: &Reply($client, \$qresult, $userinput);
1.231 foxr 3074: } else {
3075: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3076: "while attempting keys\n", $userinput);
3077: }
3078: } else {
3079: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3080: "while attempting keys\n", $userinput);
3081: }
3082:
3083: return 1;
3084: }
3085: ®ister_handler("keys", \&get_profile_keys, 0, 1, 0);
3086:
3087: #
3088: # Dump the contents of a user profile database.
3089: # Note that this constitutes a very large covert channel too since
3090: # the dump will return sensitive information that is not encrypted.
3091: # The naive security assumption is that the session negotiation ensures
3092: # our client is trusted and I don't believe that's assured at present.
3093: # Sure want badly to go to ssl or tls. Of course if my peer isn't really
3094: # a LonCAPA node they could have negotiated an encryption key too so >sigh<.
3095: #
3096: # Parameters:
3097: # $cmd - The command request keyword (currentdump).
3098: # $tail - Remainder of the request, consisting of a colon
3099: # separated list that has the domain/username and
3100: # the namespace to dump (database file).
3101: # $client - file open on the remote client.
3102: # Returns:
3103: # 1 - Continue processing.
3104: # 0 - Exit the server.
3105: #
3106: sub dump_profile_database {
3107: my ($cmd, $tail, $client) = @_;
3108:
3109: my $userinput = "$cmd:$tail";
3110:
3111: my ($udom,$uname,$namespace) = split(/:/,$tail);
3112: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3113: &GDBM_READER());
3114: if ($hashref) {
3115: # Structure of %data:
3116: # $data{$symb}->{$parameter}=$value;
3117: # $data{$symb}->{'v.'.$parameter}=$version;
3118: # since $parameter will be unescaped, we do not
3119: # have to worry about silly parameter names...
3120:
3121: my $qresult='';
3122: my %data = (); # A hash of anonymous hashes..
3123: while (my ($key,$value) = each(%$hashref)) {
3124: my ($v,$symb,$param) = split(/:/,$key);
3125: next if ($v eq 'version' || $symb eq 'keys');
3126: next if (exists($data{$symb}) &&
3127: exists($data{$symb}->{$param}) &&
3128: $data{$symb}->{'v.'.$param} > $v);
3129: $data{$symb}->{$param}=$value;
3130: $data{$symb}->{'v.'.$param}=$v;
3131: }
1.311 albertel 3132: if (&untie_user_hash($hashref)) {
1.231 foxr 3133: while (my ($symb,$param_hash) = each(%data)) {
3134: while(my ($param,$value) = each (%$param_hash)){
3135: next if ($param =~ /^v\./); # Ignore versions...
3136: #
3137: # Just dump the symb=value pairs separated by &
3138: #
3139: $qresult.=$symb.':'.$param.'='.$value.'&';
3140: }
3141: }
3142: chop($qresult);
1.387 albertel 3143: &Reply($client , \$qresult, $userinput);
1.231 foxr 3144: } else {
3145: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3146: "while attempting currentdump\n", $userinput);
3147: }
3148: } else {
3149: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3150: "while attempting currentdump\n", $userinput);
3151: }
3152:
3153: return 1;
3154: }
3155: ®ister_handler("currentdump", \&dump_profile_database, 0, 1, 0);
3156:
3157: #
3158: # Dump a profile database with an optional regular expression
3159: # to match against the keys. In this dump, no effort is made
3160: # to separate symb from version information. Presumably the
3161: # databases that are dumped by this command are of a different
3162: # structure. Need to look at this and improve the documentation of
3163: # both this and the currentdump handler.
3164: # Parameters:
3165: # $cmd - The command keyword.
3166: # $tail - All of the characters after the $cmd:
3167: # These are expected to be a colon
3168: # separated list containing:
3169: # domain/user - identifying the user.
3170: # namespace - identifying the database.
3171: # regexp - optional regular expression
3172: # that is matched against
3173: # database keywords to do
3174: # selective dumps.
3175: # $client - Channel open on the client.
3176: # Returns:
3177: # 1 - Continue processing.
3178: # Side effects:
3179: # response is written to $client.
3180: #
3181: sub dump_with_regexp {
3182: my ($cmd, $tail, $client) = @_;
3183:
3184:
3185: my $userinput = "$cmd:$tail";
3186:
1.450 raeburn 3187: my ($udom,$uname,$namespace,$regexp,$range,$extra)=split(/:/,$tail);
1.231 foxr 3188: if (defined($regexp)) {
3189: $regexp=&unescape($regexp);
3190: } else {
3191: $regexp='.';
3192: }
1.306 albertel 3193: my ($start,$end);
3194: if (defined($range)) {
3195: if ($range =~/^(\d+)\-(\d+)$/) {
3196: ($start,$end) = ($1,$2);
3197: } elsif ($range =~/^(\d+)$/) {
3198: ($start,$end) = (0,$1);
3199: } else {
3200: undef($range);
3201: }
3202: }
1.231 foxr 3203: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3204: &GDBM_READER());
1.456 raeburn 3205: my $skipcheck;
1.231 foxr 3206: if ($hashref) {
3207: my $qresult='';
1.306 albertel 3208: my $count=0;
1.450 raeburn 3209: if ($extra ne '') {
3210: $extra = &Apache::lonnet::thaw_unescape($extra);
1.456 raeburn 3211: $skipcheck = $extra->{'skipcheck'};
1.450 raeburn 3212: }
3213: my @ids = &Apache::lonnet::current_machine_ids();
1.453 raeburn 3214: my (%homecourses,$major,$minor,$now);
1.456 raeburn 3215: if (($namespace eq 'roles') && (!$skipcheck)) {
1.453 raeburn 3216: my $loncaparev = $clientversion;
3217: if ($loncaparev eq '') {
3218: $loncaparev = $Apache::lonnet::loncaparevs{$clientname};
3219: }
3220: if ($loncaparev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?/) {
3221: $major = $1;
3222: $minor = $2;
3223: }
3224: $now = time;
3225: }
1.231 foxr 3226: while (my ($key,$value) = each(%$hashref)) {
1.432 raeburn 3227: if ($namespace eq 'roles') {
1.453 raeburn 3228: if ($key =~ m{^/($LONCAPA::match_domain)/($LONCAPA::match_courseid)(/?[^_]*)_(cc|co|in|ta|ep|ad|st|cr)$}) {
1.446 raeburn 3229: my $cdom = $1;
3230: my $cnum = $2;
1.456 raeburn 3231: unless ($skipcheck) {
1.457 raeburn 3232: my ($role,$end,$start) = split(/\_/,$value);
3233: if (!$end || $end > $now) {
3234: next unless (&releasereqd_check($cnum,$cdom,$key,$value,$major,
3235: $minor,\%homecourses,\@ids));
1.458 raeburn 3236: }
1.432 raeburn 3237: }
3238: }
3239: }
1.231 foxr 3240: if ($regexp eq '.') {
1.306 albertel 3241: $count++;
3242: if (defined($range) && $count >= $end) { last; }
3243: if (defined($range) && $count < $start) { next; }
1.231 foxr 3244: $qresult.=$key.'='.$value.'&';
3245: } else {
3246: my $unescapeKey = &unescape($key);
3247: if (eval('$unescapeKey=~/$regexp/')) {
1.306 albertel 3248: $count++;
3249: if (defined($range) && $count >= $end) { last; }
3250: if (defined($range) && $count < $start) { next; }
1.231 foxr 3251: $qresult.="$key=$value&";
3252: }
3253: }
3254: }
1.311 albertel 3255: if (&untie_user_hash($hashref)) {
1.456 raeburn 3256: if (($namespace eq 'roles') && (!$skipcheck)) {
1.453 raeburn 3257: if (keys(%homecourses) > 0) {
3258: $qresult .= &check_homecourses(\%homecourses,$udom,$regexp,$count,
3259: $range,$start,$end,$major,$minor);
3260: }
3261: }
1.231 foxr 3262: chop($qresult);
1.387 albertel 3263: &Reply($client, \$qresult, $userinput);
1.231 foxr 3264: } else {
3265: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3266: "while attempting dump\n", $userinput);
3267: }
3268: } else {
3269: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3270: "while attempting dump\n", $userinput);
3271: }
3272:
3273: return 1;
3274: }
3275: ®ister_handler("dump", \&dump_with_regexp, 0, 1, 0);
3276:
3277: # Store a set of key=value pairs associated with a versioned name.
3278: #
3279: # Parameters:
3280: # $cmd - Request command keyword.
3281: # $tail - Tail of the request. This is a colon
3282: # separated list containing:
3283: # domain/user - User and authentication domain.
3284: # namespace - Name of the database being modified
3285: # rid - Resource keyword to modify.
3286: # what - new value associated with rid.
3287: #
3288: # $client - Socket open on the client.
3289: #
3290: #
3291: # Returns:
3292: # 1 (keep on processing).
3293: # Side-Effects:
3294: # Writes to the client
3295: sub store_handler {
3296: my ($cmd, $tail, $client) = @_;
3297:
3298: my $userinput = "$cmd:$tail";
3299:
3300: my ($udom,$uname,$namespace,$rid,$what) =split(/:/,$tail);
3301: if ($namespace ne 'roles') {
3302:
3303: chomp($what);
3304: my @pairs=split(/\&/,$what);
3305: my $hashref = &tie_user_hash($udom, $uname, $namespace,
1.268 albertel 3306: &GDBM_WRCREAT(), "S",
1.231 foxr 3307: "$rid:$what");
3308: if ($hashref) {
3309: my $now = time;
3310: my @previouskeys=split(/&/,$hashref->{"keys:$rid"});
3311: my $key;
3312: $hashref->{"version:$rid"}++;
3313: my $version=$hashref->{"version:$rid"};
3314: my $allkeys='';
3315: foreach my $pair (@pairs) {
3316: my ($key,$value)=split(/=/,$pair);
3317: $allkeys.=$key.':';
3318: $hashref->{"$version:$rid:$key"}=$value;
3319: }
3320: $hashref->{"$version:$rid:timestamp"}=$now;
3321: $allkeys.='timestamp';
3322: $hashref->{"$version:keys:$rid"}=$allkeys;
1.311 albertel 3323: if (&untie_user_hash($hashref)) {
1.231 foxr 3324: &Reply($client, "ok\n", $userinput);
3325: } else {
3326: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3327: "while attempting store\n", $userinput);
3328: }
3329: } else {
3330: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3331: "while attempting store\n", $userinput);
3332: }
3333: } else {
3334: &Failure($client, "refused\n", $userinput);
3335: }
3336:
3337: return 1;
3338: }
3339: ®ister_handler("store", \&store_handler, 0, 1, 0);
1.263 albertel 3340:
1.323 albertel 3341: # Modify a set of key=value pairs associated with a versioned name.
3342: #
3343: # Parameters:
3344: # $cmd - Request command keyword.
3345: # $tail - Tail of the request. This is a colon
3346: # separated list containing:
3347: # domain/user - User and authentication domain.
3348: # namespace - Name of the database being modified
3349: # rid - Resource keyword to modify.
3350: # v - Version item to modify
3351: # what - new value associated with rid.
3352: #
3353: # $client - Socket open on the client.
3354: #
3355: #
3356: # Returns:
3357: # 1 (keep on processing).
3358: # Side-Effects:
3359: # Writes to the client
3360: sub putstore_handler {
3361: my ($cmd, $tail, $client) = @_;
3362:
3363: my $userinput = "$cmd:$tail";
3364:
3365: my ($udom,$uname,$namespace,$rid,$v,$what) =split(/:/,$tail);
3366: if ($namespace ne 'roles') {
3367:
3368: chomp($what);
3369: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3370: &GDBM_WRCREAT(), "M",
3371: "$rid:$v:$what");
3372: if ($hashref) {
3373: my $now = time;
3374: my %data = &hash_extract($what);
3375: my @allkeys;
3376: while (my($key,$value) = each(%data)) {
3377: push(@allkeys,$key);
3378: $hashref->{"$v:$rid:$key"} = $value;
3379: }
3380: my $allkeys = join(':',@allkeys);
3381: $hashref->{"$v:keys:$rid"}=$allkeys;
3382:
3383: if (&untie_user_hash($hashref)) {
3384: &Reply($client, "ok\n", $userinput);
3385: } else {
3386: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3387: "while attempting store\n", $userinput);
3388: }
3389: } else {
3390: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3391: "while attempting store\n", $userinput);
3392: }
3393: } else {
3394: &Failure($client, "refused\n", $userinput);
3395: }
3396:
3397: return 1;
3398: }
3399: ®ister_handler("putstore", \&putstore_handler, 0, 1, 0);
3400:
3401: sub hash_extract {
3402: my ($str)=@_;
3403: my %hash;
3404: foreach my $pair (split(/\&/,$str)) {
3405: my ($key,$value)=split(/=/,$pair);
3406: $hash{$key}=$value;
3407: }
3408: return (%hash);
3409: }
3410: sub hash_to_str {
3411: my ($hash_ref)=@_;
3412: my $str;
3413: foreach my $key (keys(%$hash_ref)) {
3414: $str.=$key.'='.$hash_ref->{$key}.'&';
3415: }
3416: $str=~s/\&$//;
3417: return $str;
3418: }
3419:
1.231 foxr 3420: #
3421: # Dump out all versions of a resource that has key=value pairs associated
3422: # with it for each version. These resources are built up via the store
3423: # command.
3424: #
3425: # Parameters:
3426: # $cmd - Command keyword.
3427: # $tail - Remainder of the request which consists of:
3428: # domain/user - User and auth. domain.
3429: # namespace - name of resource database.
3430: # rid - Resource id.
3431: # $client - socket open on the client.
3432: #
3433: # Returns:
3434: # 1 indicating the caller should not yet exit.
3435: # Side-effects:
3436: # Writes a reply to the client.
3437: # The reply is a string of the following shape:
3438: # version=current&version:keys=k1:k2...&1:k1=v1&1:k2=v2...
3439: # Where the 1 above represents version 1.
3440: # this continues for all pairs of keys in all versions.
3441: #
3442: #
3443: #
3444: #
3445: sub restore_handler {
3446: my ($cmd, $tail, $client) = @_;
3447:
3448: my $userinput = "$cmd:$tail"; # Only used for logging purposes.
1.351 banghart 3449: my ($udom,$uname,$namespace,$rid) = split(/:/,$tail);
1.352 albertel 3450: $namespace=~s/\//\_/g;
1.350 albertel 3451: $namespace = &LONCAPA::clean_username($namespace);
1.349 albertel 3452:
1.231 foxr 3453: chomp($rid);
3454: my $qresult='';
1.309 albertel 3455: my $hashref = &tie_user_hash($udom, $uname, $namespace, &GDBM_READER());
3456: if ($hashref) {
3457: my $version=$hashref->{"version:$rid"};
1.231 foxr 3458: $qresult.="version=$version&";
3459: my $scope;
3460: for ($scope=1;$scope<=$version;$scope++) {
1.309 albertel 3461: my $vkeys=$hashref->{"$scope:keys:$rid"};
1.231 foxr 3462: my @keys=split(/:/,$vkeys);
3463: my $key;
3464: $qresult.="$scope:keys=$vkeys&";
3465: foreach $key (@keys) {
1.309 albertel 3466: $qresult.="$scope:$key=".$hashref->{"$scope:$rid:$key"}."&";
1.231 foxr 3467: }
3468: }
1.311 albertel 3469: if (&untie_user_hash($hashref)) {
1.231 foxr 3470: $qresult=~s/\&$//;
1.387 albertel 3471: &Reply( $client, \$qresult, $userinput);
1.231 foxr 3472: } else {
3473: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3474: "while attempting restore\n", $userinput);
3475: }
3476: } else {
3477: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3478: "while attempting restore\n", $userinput);
3479: }
3480:
3481: return 1;
3482:
3483:
3484: }
3485: ®ister_handler("restore", \&restore_handler, 0,1,0);
1.234 foxr 3486:
3487: #
1.324 raeburn 3488: # Add a chat message to a synchronous discussion board.
1.234 foxr 3489: #
3490: # Parameters:
3491: # $cmd - Request keyword.
3492: # $tail - Tail of the command. A colon separated list
3493: # containing:
3494: # cdom - Domain on which the chat board lives
1.324 raeburn 3495: # cnum - Course containing the chat board.
3496: # newpost - Body of the posting.
3497: # group - Optional group, if chat board is only
3498: # accessible in a group within the course
1.234 foxr 3499: # $client - Socket open on the client.
3500: # Returns:
3501: # 1 - Indicating caller should keep on processing.
3502: #
3503: # Side-effects:
3504: # writes a reply to the client.
3505: #
3506: #
3507: sub send_chat_handler {
3508: my ($cmd, $tail, $client) = @_;
3509:
3510:
3511: my $userinput = "$cmd:$tail";
3512:
1.324 raeburn 3513: my ($cdom,$cnum,$newpost,$group)=split(/\:/,$tail);
3514: &chat_add($cdom,$cnum,$newpost,$group);
1.234 foxr 3515: &Reply($client, "ok\n", $userinput);
3516:
3517: return 1;
3518: }
3519: ®ister_handler("chatsend", \&send_chat_handler, 0, 1, 0);
1.263 albertel 3520:
1.234 foxr 3521: #
1.324 raeburn 3522: # Retrieve the set of chat messages from a discussion board.
1.234 foxr 3523: #
3524: # Parameters:
3525: # $cmd - Command keyword that initiated the request.
3526: # $tail - Remainder of the request after the command
3527: # keyword. In this case a colon separated list of
3528: # chat domain - Which discussion board.
3529: # chat id - Discussion thread(?)
3530: # domain/user - Authentication domain and username
3531: # of the requesting person.
1.324 raeburn 3532: # group - Optional course group containing
3533: # the board.
1.234 foxr 3534: # $client - Socket open on the client program.
3535: # Returns:
3536: # 1 - continue processing
3537: # Side effects:
3538: # Response is written to the client.
3539: #
3540: sub retrieve_chat_handler {
3541: my ($cmd, $tail, $client) = @_;
3542:
3543:
3544: my $userinput = "$cmd:$tail";
3545:
1.324 raeburn 3546: my ($cdom,$cnum,$udom,$uname,$group)=split(/\:/,$tail);
1.234 foxr 3547: my $reply='';
1.324 raeburn 3548: foreach (&get_chat($cdom,$cnum,$udom,$uname,$group)) {
1.234 foxr 3549: $reply.=&escape($_).':';
3550: }
3551: $reply=~s/\:$//;
1.387 albertel 3552: &Reply($client, \$reply, $userinput);
1.234 foxr 3553:
3554:
3555: return 1;
3556: }
3557: ®ister_handler("chatretr", \&retrieve_chat_handler, 0, 1, 0);
3558:
3559: #
3560: # Initiate a query of an sql database. SQL query repsonses get put in
3561: # a file for later retrieval. This prevents sql query results from
3562: # bottlenecking the system. Note that with loncnew, perhaps this is
3563: # less of an issue since multiple outstanding requests can be concurrently
3564: # serviced.
3565: #
3566: # Parameters:
3567: # $cmd - COmmand keyword that initiated the request.
3568: # $tail - Remainder of the command after the keyword.
3569: # For this function, this consists of a query and
3570: # 3 arguments that are self-documentingly labelled
3571: # in the original arg1, arg2, arg3.
3572: # $client - Socket open on the client.
3573: # Return:
3574: # 1 - Indicating processing should continue.
3575: # Side-effects:
3576: # a reply is written to $client.
3577: #
3578: sub send_query_handler {
3579: my ($cmd, $tail, $client) = @_;
3580:
3581:
3582: my $userinput = "$cmd:$tail";
3583:
3584: my ($query,$arg1,$arg2,$arg3)=split(/\:/,$tail);
3585: $query=~s/\n*$//g;
3586: &Reply($client, "". &sql_reply("$clientname\&$query".
3587: "\&$arg1"."\&$arg2"."\&$arg3")."\n",
3588: $userinput);
3589:
3590: return 1;
3591: }
3592: ®ister_handler("querysend", \&send_query_handler, 0, 1, 0);
3593:
3594: #
3595: # Add a reply to an sql query. SQL queries are done asyncrhonously.
3596: # The query is submitted via a "querysend" transaction.
3597: # There it is passed on to the lonsql daemon, queued and issued to
3598: # mysql.
3599: # This transaction is invoked when the sql transaction is complete
3600: # it stores the query results in flie and indicates query completion.
3601: # presumably local software then fetches this response... I'm guessing
3602: # the sequence is: lonc does a querysend, we ask lonsql to do it.
3603: # lonsql on completion of the query interacts with the lond of our
3604: # client to do a query reply storing two files:
3605: # - id - The results of the query.
3606: # - id.end - Indicating the transaction completed.
3607: # NOTE: id is a unique id assigned to the query and querysend time.
3608: # Parameters:
3609: # $cmd - Command keyword that initiated this request.
3610: # $tail - Remainder of the tail. In this case that's a colon
3611: # separated list containing the query Id and the
3612: # results of the query.
3613: # $client - Socket open on the client.
3614: # Return:
3615: # 1 - Indicating that we should continue processing.
3616: # Side effects:
3617: # ok written to the client.
3618: #
3619: sub reply_query_handler {
3620: my ($cmd, $tail, $client) = @_;
3621:
3622:
3623: my $userinput = "$cmd:$tail";
3624:
1.339 albertel 3625: my ($id,$reply)=split(/:/,$tail);
1.234 foxr 3626: my $store;
3627: my $execdir=$perlvar{'lonDaemons'};
3628: if ($store=IO::File->new(">$execdir/tmp/$id")) {
3629: $reply=~s/\&/\n/g;
3630: print $store $reply;
3631: close $store;
3632: my $store2=IO::File->new(">$execdir/tmp/$id.end");
3633: print $store2 "done\n";
3634: close $store2;
3635: &Reply($client, "ok\n", $userinput);
3636: } else {
3637: &Failure($client, "error: ".($!+0)
3638: ." IO::File->new Failed ".
3639: "while attempting queryreply\n", $userinput);
3640: }
3641:
3642:
3643: return 1;
3644: }
3645: ®ister_handler("queryreply", \&reply_query_handler, 0, 1, 0);
3646:
3647: #
3648: # Process the courseidput request. Not quite sure what this means
3649: # at the system level sense. It appears a gdbm file in the
3650: # /home/httpd/lonUsers/$domain/nohist_courseids is tied and
3651: # a set of entries made in that database.
3652: #
3653: # Parameters:
3654: # $cmd - The command keyword that initiated this request.
3655: # $tail - Tail of the command. In this case consists of a colon
3656: # separated list contaning the domain to apply this to and
3657: # an ampersand separated list of keyword=value pairs.
1.272 raeburn 3658: # Each value is a colon separated list that includes:
3659: # description, institutional code and course owner.
3660: # For backward compatibility with versions included
3661: # in LON-CAPA 1.1.X (and earlier) and 1.2.X, institutional
3662: # code and/or course owner are preserved from the existing
3663: # record when writing a new record in response to 1.1 or
3664: # 1.2 implementations of lonnet::flushcourselogs().
3665: #
1.234 foxr 3666: # $client - Socket open on the client.
3667: # Returns:
3668: # 1 - indicating that processing should continue
3669: #
3670: # Side effects:
3671: # reply is written to the client.
3672: #
3673: sub put_course_id_handler {
3674: my ($cmd, $tail, $client) = @_;
3675:
3676:
3677: my $userinput = "$cmd:$tail";
3678:
1.266 raeburn 3679: my ($udom, $what) = split(/:/, $tail,2);
1.234 foxr 3680: chomp($what);
3681: my $now=time;
3682: my @pairs=split(/\&/,$what);
3683:
3684: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
3685: if ($hashref) {
3686: foreach my $pair (@pairs) {
1.271 raeburn 3687: my ($key,$courseinfo) = split(/=/,$pair,2);
3688: $courseinfo =~ s/=/:/g;
1.384 raeburn 3689: if (defined($hashref->{$key})) {
3690: my $value = &Apache::lonnet::thaw_unescape($hashref->{$key});
3691: if (ref($value) eq 'HASH') {
3692: my @items = ('description','inst_code','owner','type');
3693: my @new_items = split(/:/,$courseinfo,-1);
3694: my %storehash;
3695: for (my $i=0; $i<@new_items; $i++) {
1.391 raeburn 3696: $storehash{$items[$i]} = &unescape($new_items[$i]);
1.384 raeburn 3697: }
3698: $hashref->{$key} =
3699: &Apache::lonnet::freeze_escape(\%storehash);
3700: my $unesc_key = &unescape($key);
3701: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
3702: next;
1.383 raeburn 3703: }
1.384 raeburn 3704: }
3705: my @current_items = split(/:/,$hashref->{$key},-1);
3706: shift(@current_items); # remove description
3707: pop(@current_items); # remove last access
3708: my $numcurrent = scalar(@current_items);
3709: if ($numcurrent > 3) {
3710: $numcurrent = 3;
3711: }
3712: my @new_items = split(/:/,$courseinfo,-1);
3713: my $numnew = scalar(@new_items);
3714: if ($numcurrent > 0) {
3715: if ($numnew <= $numcurrent) { # flushcourselogs() from pre 2.2
3716: for (my $j=$numcurrent-$numnew; $j>=0; $j--) {
3717: $courseinfo .= ':'.$current_items[$numcurrent-$j-1];
1.333 raeburn 3718: }
1.272 raeburn 3719: }
3720: }
1.384 raeburn 3721: $hashref->{$key}=$courseinfo.':'.$now;
1.234 foxr 3722: }
1.311 albertel 3723: if (&untie_domain_hash($hashref)) {
1.253 foxr 3724: &Reply( $client, "ok\n", $userinput);
1.234 foxr 3725: } else {
1.253 foxr 3726: &Failure($client, "error: ".($!+0)
1.234 foxr 3727: ." untie(GDBM) Failed ".
3728: "while attempting courseidput\n", $userinput);
3729: }
3730: } else {
1.253 foxr 3731: &Failure($client, "error: ".($!+0)
1.234 foxr 3732: ." tie(GDBM) Failed ".
3733: "while attempting courseidput\n", $userinput);
3734: }
3735:
3736: return 1;
3737: }
3738: ®ister_handler("courseidput", \&put_course_id_handler, 0, 1, 0);
3739:
1.383 raeburn 3740: sub put_course_id_hash_handler {
3741: my ($cmd, $tail, $client) = @_;
3742: my $userinput = "$cmd:$tail";
1.384 raeburn 3743: my ($udom,$mode,$what) = split(/:/, $tail,3);
1.383 raeburn 3744: chomp($what);
3745: my $now=time;
3746: my @pairs=split(/\&/,$what);
1.384 raeburn 3747: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
1.383 raeburn 3748: if ($hashref) {
3749: foreach my $pair (@pairs) {
3750: my ($key,$value)=split(/=/,$pair);
1.384 raeburn 3751: my $unesc_key = &unescape($key);
3752: if ($mode ne 'timeonly') {
3753: if (!defined($hashref->{&escape('lasttime:'.$unesc_key)})) {
3754: my $curritems = &Apache::lonnet::thaw_unescape($key);
3755: if (ref($curritems) ne 'HASH') {
3756: my @current_items = split(/:/,$hashref->{$key},-1);
3757: my $lasttime = pop(@current_items);
3758: $hashref->{&escape('lasttime:'.$unesc_key)} = $lasttime;
3759: } else {
3760: $hashref->{&escape('lasttime:'.$unesc_key)} = '';
3761: }
3762: }
3763: $hashref->{$key} = $value;
3764: }
3765: if ($mode ne 'notime') {
3766: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
3767: }
1.383 raeburn 3768: }
3769: if (&untie_domain_hash($hashref)) {
3770: &Reply($client, "ok\n", $userinput);
3771: } else {
3772: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3773: "while attempting courseidputhash\n", $userinput);
3774: }
3775: } else {
3776: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3777: "while attempting courseidputhash\n", $userinput);
3778: }
3779: return 1;
3780: }
3781: ®ister_handler("courseidputhash", \&put_course_id_hash_handler, 0, 1, 0);
3782:
1.234 foxr 3783: # Retrieves the value of a course id resource keyword pattern
3784: # defined since a starting date. Both the starting date and the
3785: # keyword pattern are optional. If the starting date is not supplied it
3786: # is treated as the beginning of time. If the pattern is not found,
3787: # it is treatred as "." matching everything.
3788: #
3789: # Parameters:
3790: # $cmd - Command keyword that resulted in us being dispatched.
3791: # $tail - The remainder of the command that, in this case, consists
3792: # of a colon separated list of:
3793: # domain - The domain in which the course database is
3794: # defined.
3795: # since - Optional parameter describing the minimum
3796: # time of definition(?) of the resources that
3797: # will match the dump.
3798: # description - regular expression that is used to filter
3799: # the dump. Only keywords matching this regexp
3800: # will be used.
1.272 raeburn 3801: # institutional code - optional supplied code to filter
3802: # the dump. Only courses with an institutional code
3803: # that match the supplied code will be returned.
1.336 raeburn 3804: # owner - optional supplied username and domain of owner to
3805: # filter the dump. Only courses for which the course
3806: # owner matches the supplied username and/or domain
3807: # will be returned. Pre-2.2.0 legacy entries from
3808: # nohist_courseiddump will only contain usernames.
1.384 raeburn 3809: # type - optional parameter for selection
1.418 raeburn 3810: # regexp_ok - if 1 or -1 allow the supplied institutional code
3811: # filter to behave as a regular expression:
3812: # 1 will not exclude the course if the instcode matches the RE
3813: # -1 will exclude the course if the instcode matches the RE
1.384 raeburn 3814: # rtn_as_hash - whether to return the information available for
3815: # each matched item as a frozen hash of all
3816: # key, value pairs in the item's hash, or as a
3817: # colon-separated list of (in order) description,
3818: # institutional code, and course owner.
1.404 raeburn 3819: # selfenrollonly - filter by courses allowing self-enrollment
3820: # now or in the future (selfenrollonly = 1).
3821: # catfilter - filter by course category, assigned to a course
3822: # using manually defined categories (i.e., not
1.407 raeburn 3823: # self-cataloging based on on institutional code).
1.404 raeburn 3824: # showhidden - include course in results even if course
1.407 raeburn 3825: # was set to be excluded from course catalog (DC only).
1.404 raeburn 3826: # caller - if set to 'coursecatalog', courses set to be hidden
3827: # from course catalog will be excluded from results (unless
3828: # overridden by "showhidden".
1.427 raeburn 3829: # cloner - escaped username:domain of course cloner (if picking course to
1.419 raeburn 3830: # clone).
3831: # cc_clone_list - escaped comma separated list of courses for which
3832: # course cloner has active CC role (and so can clone
3833: # automatically).
1.427 raeburn 3834: # cloneonly - filter by courses for which cloner has rights to clone.
3835: # createdbefore - include courses for which creation date preceeded this date.
3836: # createdafter - include courses for which creation date followed this date.
3837: # creationcontext - include courses created in specified context
1.404 raeburn 3838: #
1.445 raeburn 3839: # domcloner - flag to indicate if user can create CCs in course's domain.
3840: # If so, ability to clone course is automatic.
3841: #
1.234 foxr 3842: # $client - The socket open on the client.
3843: # Returns:
3844: # 1 - Continue processing.
3845: # Side Effects:
3846: # a reply is written to $client.
3847: sub dump_course_id_handler {
3848: my ($cmd, $tail, $client) = @_;
3849: my $userinput = "$cmd:$tail";
3850:
1.333 raeburn 3851: my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter,
1.404 raeburn 3852: $typefilter,$regexp_ok,$rtn_as_hash,$selfenrollonly,$catfilter,$showhidden,
1.427 raeburn 3853: $caller,$cloner,$cc_clone_list,$cloneonly,$createdbefore,$createdafter,
1.445 raeburn 3854: $creationcontext,$domcloner) =split(/:/,$tail);
1.397 raeburn 3855: my $now = time;
1.419 raeburn 3856: my ($cloneruname,$clonerudom,%cc_clone);
1.234 foxr 3857: if (defined($description)) {
3858: $description=&unescape($description);
3859: } else {
3860: $description='.';
3861: }
1.266 raeburn 3862: if (defined($instcodefilter)) {
3863: $instcodefilter=&unescape($instcodefilter);
3864: } else {
3865: $instcodefilter='.';
3866: }
1.336 raeburn 3867: my ($ownerunamefilter,$ownerdomfilter);
1.266 raeburn 3868: if (defined($ownerfilter)) {
3869: $ownerfilter=&unescape($ownerfilter);
1.336 raeburn 3870: if ($ownerfilter ne '.' && defined($ownerfilter)) {
3871: if ($ownerfilter =~ /^([^:]*):([^:]*)$/) {
3872: $ownerunamefilter = $1;
3873: $ownerdomfilter = $2;
3874: } else {
3875: $ownerunamefilter = $ownerfilter;
3876: $ownerdomfilter = '';
3877: }
3878: }
1.266 raeburn 3879: } else {
3880: $ownerfilter='.';
3881: }
1.336 raeburn 3882:
1.282 raeburn 3883: if (defined($coursefilter)) {
3884: $coursefilter=&unescape($coursefilter);
3885: } else {
3886: $coursefilter='.';
3887: }
1.333 raeburn 3888: if (defined($typefilter)) {
3889: $typefilter=&unescape($typefilter);
3890: } else {
3891: $typefilter='.';
3892: }
1.344 raeburn 3893: if (defined($regexp_ok)) {
3894: $regexp_ok=&unescape($regexp_ok);
3895: }
1.401 raeburn 3896: if (defined($catfilter)) {
3897: $catfilter=&unescape($catfilter);
3898: }
1.419 raeburn 3899: if (defined($cloner)) {
3900: $cloner = &unescape($cloner);
3901: ($cloneruname,$clonerudom) = ($cloner =~ /^($LONCAPA::match_username):($LONCAPA::match_domain)$/);
3902: }
3903: if (defined($cc_clone_list)) {
3904: $cc_clone_list = &unescape($cc_clone_list);
3905: my @cc_cloners = split('&',$cc_clone_list);
3906: foreach my $cid (@cc_cloners) {
3907: my ($clonedom,$clonenum) = split(':',$cid);
3908: next if ($clonedom ne $udom);
3909: $cc_clone{$clonedom.'_'.$clonenum} = 1;
3910: }
3911: }
1.431 raeburn 3912: if ($createdbefore ne '') {
1.427 raeburn 3913: $createdbefore = &unescape($createdbefore);
3914: } else {
3915: $createdbefore = 0;
3916: }
1.431 raeburn 3917: if ($createdafter ne '') {
1.427 raeburn 3918: $createdafter = &unescape($createdafter);
3919: } else {
3920: $createdafter = 0;
3921: }
1.431 raeburn 3922: if ($creationcontext ne '') {
1.427 raeburn 3923: $creationcontext = &unescape($creationcontext);
3924: } else {
3925: $creationcontext = '.';
3926: }
1.384 raeburn 3927: my $unpack = 1;
3928: if ($description eq '.' && $instcodefilter eq '.' && $coursefilter eq '.' &&
3929: $typefilter eq '.') {
3930: $unpack = 0;
3931: }
3932: if (!defined($since)) { $since=0; }
1.234 foxr 3933: my $qresult='';
3934: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
3935: if ($hashref) {
1.384 raeburn 3936: while (my ($key,$value) = each(%$hashref)) {
1.397 raeburn 3937: my ($unesc_key,$lasttime_key,$lasttime,$is_hash,%val,
1.427 raeburn 3938: %unesc_val,$selfenroll_end,$selfenroll_types,$created,
3939: $context);
1.384 raeburn 3940: $unesc_key = &unescape($key);
3941: if ($unesc_key =~ /^lasttime:/) {
3942: next;
3943: } else {
3944: $lasttime_key = &escape('lasttime:'.$unesc_key);
3945: }
3946: if ($hashref->{$lasttime_key} ne '') {
3947: $lasttime = $hashref->{$lasttime_key};
3948: next if ($lasttime<$since);
3949: }
1.419 raeburn 3950: my ($canclone,$valchange);
1.384 raeburn 3951: my $items = &Apache::lonnet::thaw_unescape($value);
3952: if (ref($items) eq 'HASH') {
1.429 raeburn 3953: if ($hashref->{$lasttime_key} eq '') {
1.430 raeburn 3954: next if ($since > 1);
1.429 raeburn 3955: }
1.384 raeburn 3956: $is_hash = 1;
1.445 raeburn 3957: if ($domcloner) {
3958: $canclone = 1;
3959: } elsif (defined($clonerudom)) {
1.419 raeburn 3960: if ($items->{'cloners'}) {
3961: my @cloneable = split(',',$items->{'cloners'});
3962: if (@cloneable) {
3963: if (grep(/^\*$/,@cloneable)) {
3964: $canclone = 1;
3965: } elsif (grep(/^\*:\Q$clonerudom\E$/,@cloneable)) {
3966: $canclone = 1;
3967: } elsif (grep(/^\Q$cloneruname\E:\Q$clonerudom\E$/,@cloneable)) {
3968: $canclone = 1;
3969: }
3970: }
3971: unless ($canclone) {
3972: if ($cloneruname ne '' && $clonerudom ne '') {
3973: if ($cc_clone{$unesc_key}) {
3974: $canclone = 1;
3975: $items->{'cloners'} .= ','.$cloneruname.':'.
3976: $clonerudom;
3977: $valchange = 1;
3978: }
3979: }
3980: }
3981: } elsif (defined($cloneruname)) {
3982: if ($cc_clone{$unesc_key}) {
3983: $canclone = 1;
3984: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
3985: $valchange = 1;
3986: }
1.437 raeburn 3987: unless ($canclone) {
3988: if ($items->{'owner'} =~ /:/) {
3989: if ($items->{'owner'} eq $cloner) {
3990: $canclone = 1;
3991: }
1.444 raeburn 3992: } elsif ($cloner eq $items->{'owner'}.':'.$udom) {
1.437 raeburn 3993: $canclone = 1;
3994: }
3995: if ($canclone) {
3996: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
3997: $valchange = 1;
3998: }
3999: }
1.419 raeburn 4000: }
4001: }
1.384 raeburn 4002: if ($unpack || !$rtn_as_hash) {
4003: $unesc_val{'descr'} = $items->{'description'};
4004: $unesc_val{'inst_code'} = $items->{'inst_code'};
4005: $unesc_val{'owner'} = $items->{'owner'};
4006: $unesc_val{'type'} = $items->{'type'};
1.419 raeburn 4007: $unesc_val{'cloners'} = $items->{'cloners'};
1.427 raeburn 4008: $unesc_val{'created'} = $items->{'created'};
4009: $unesc_val{'context'} = $items->{'context'};
1.404 raeburn 4010: }
4011: $selfenroll_types = $items->{'selfenroll_types'};
4012: $selfenroll_end = $items->{'selfenroll_end_date'};
1.427 raeburn 4013: $created = $items->{'created'};
4014: $context = $items->{'context'};
1.404 raeburn 4015: if ($selfenrollonly) {
4016: next if (!$selfenroll_types);
4017: if (($selfenroll_end > 0) && ($selfenroll_end <= $now)) {
4018: next;
1.397 raeburn 4019: }
1.404 raeburn 4020: }
1.427 raeburn 4021: if ($creationcontext ne '.') {
4022: next if (($context ne '') && ($context ne $creationcontext));
4023: }
4024: if ($createdbefore > 0) {
4025: next if (($created eq '') || ($created > $createdbefore));
4026: }
4027: if ($createdafter > 0) {
4028: next if (($created eq '') || ($created <= $createdafter));
4029: }
1.404 raeburn 4030: if ($catfilter ne '') {
1.406 raeburn 4031: next if ($items->{'categories'} eq '');
4032: my @categories = split('&',$items->{'categories'});
1.407 raeburn 4033: next if (@categories == 0);
4034: my @subcats = split('&',$catfilter);
4035: my $matchcat = 0;
4036: foreach my $cat (@categories) {
4037: if (grep(/^\Q$cat\E$/,@subcats)) {
4038: $matchcat = 1;
4039: last;
4040: }
4041: }
4042: next if (!$matchcat);
1.404 raeburn 4043: }
4044: if ($caller eq 'coursecatalog') {
1.405 raeburn 4045: if ($items->{'hidefromcat'} eq 'yes') {
4046: next if !$showhidden;
1.401 raeburn 4047: }
1.384 raeburn 4048: }
1.383 raeburn 4049: } else {
1.401 raeburn 4050: next if ($catfilter ne '');
1.419 raeburn 4051: next if ($selfenrollonly);
1.427 raeburn 4052: next if ($createdbefore || $createdafter);
4053: next if ($creationcontext ne '.');
1.419 raeburn 4054: if ((defined($clonerudom)) && (defined($cloneruname))) {
4055: if ($cc_clone{$unesc_key}) {
4056: $canclone = 1;
4057: $val{'cloners'} = &escape($cloneruname.':'.$clonerudom);
4058: }
4059: }
1.384 raeburn 4060: $is_hash = 0;
1.388 raeburn 4061: my @courseitems = split(/:/,$value);
1.403 raeburn 4062: $lasttime = pop(@courseitems);
1.402 raeburn 4063: if ($hashref->{$lasttime_key} eq '') {
4064: next if ($lasttime<$since);
4065: }
1.384 raeburn 4066: ($val{'descr'},$val{'inst_code'},$val{'owner'},$val{'type'}) = @courseitems;
1.383 raeburn 4067: }
1.419 raeburn 4068: if ($cloneonly) {
4069: next unless ($canclone);
4070: }
1.266 raeburn 4071: my $match = 1;
1.384 raeburn 4072: if ($description ne '.') {
4073: if (!$is_hash) {
4074: $unesc_val{'descr'} = &unescape($val{'descr'});
4075: }
4076: if (eval{$unesc_val{'descr'} !~ /\Q$description\E/i}) {
1.266 raeburn 4077: $match = 0;
1.384 raeburn 4078: }
1.266 raeburn 4079: }
1.384 raeburn 4080: if ($instcodefilter ne '.') {
4081: if (!$is_hash) {
4082: $unesc_val{'inst_code'} = &unescape($val{'inst_code'});
4083: }
1.418 raeburn 4084: if ($regexp_ok == 1) {
1.384 raeburn 4085: if (eval{$unesc_val{'inst_code'} !~ /$instcodefilter/}) {
1.344 raeburn 4086: $match = 0;
4087: }
1.418 raeburn 4088: } elsif ($regexp_ok == -1) {
4089: if (eval{$unesc_val{'inst_code'} =~ /$instcodefilter/}) {
4090: $match = 0;
4091: }
1.344 raeburn 4092: } else {
1.384 raeburn 4093: if (eval{$unesc_val{'inst_code'} !~ /\Q$instcodefilter\E/i}) {
1.344 raeburn 4094: $match = 0;
4095: }
1.266 raeburn 4096: }
1.234 foxr 4097: }
1.384 raeburn 4098: if ($ownerfilter ne '.') {
4099: if (!$is_hash) {
4100: $unesc_val{'owner'} = &unescape($val{'owner'});
4101: }
1.336 raeburn 4102: if (($ownerunamefilter ne '') && ($ownerdomfilter ne '')) {
1.384 raeburn 4103: if ($unesc_val{'owner'} =~ /:/) {
4104: if (eval{$unesc_val{'owner'} !~
4105: /\Q$ownerunamefilter\E:\Q$ownerdomfilter\E$/i}) {
1.336 raeburn 4106: $match = 0;
4107: }
4108: } else {
1.384 raeburn 4109: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4110: $match = 0;
4111: }
4112: }
4113: } elsif ($ownerunamefilter ne '') {
1.384 raeburn 4114: if ($unesc_val{'owner'} =~ /:/) {
4115: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E:[^:]+$/i}) {
1.336 raeburn 4116: $match = 0;
4117: }
4118: } else {
1.384 raeburn 4119: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4120: $match = 0;
4121: }
4122: }
4123: } elsif ($ownerdomfilter ne '') {
1.384 raeburn 4124: if ($unesc_val{'owner'} =~ /:/) {
4125: if (eval{$unesc_val{'owner'} !~ /^[^:]+:\Q$ownerdomfilter\E/}) {
1.336 raeburn 4126: $match = 0;
4127: }
4128: } else {
4129: if ($ownerdomfilter ne $udom) {
4130: $match = 0;
4131: }
4132: }
1.266 raeburn 4133: }
4134: }
1.384 raeburn 4135: if ($coursefilter ne '.') {
4136: if (eval{$unesc_key !~ /^$udom(_)\Q$coursefilter\E$/}) {
1.282 raeburn 4137: $match = 0;
4138: }
4139: }
1.384 raeburn 4140: if ($typefilter ne '.') {
4141: if (!$is_hash) {
4142: $unesc_val{'type'} = &unescape($val{'type'});
4143: }
4144: if ($unesc_val{'type'} eq '') {
1.333 raeburn 4145: if ($typefilter ne 'Course') {
4146: $match = 0;
4147: }
1.383 raeburn 4148: } else {
1.384 raeburn 4149: if (eval{$unesc_val{'type'} !~ /^\Q$typefilter\E$/}) {
1.333 raeburn 4150: $match = 0;
4151: }
4152: }
4153: }
1.266 raeburn 4154: if ($match == 1) {
1.384 raeburn 4155: if ($rtn_as_hash) {
4156: if ($is_hash) {
1.419 raeburn 4157: if ($valchange) {
4158: my $newvalue = &Apache::lonnet::freeze_escape($items);
4159: $qresult.=$key.'='.$newvalue.'&';
4160: } else {
4161: $qresult.=$key.'='.$value.'&';
4162: }
1.384 raeburn 4163: } else {
1.388 raeburn 4164: my %rtnhash = ( 'description' => &unescape($val{'descr'}),
4165: 'inst_code' => &unescape($val{'inst_code'}),
4166: 'owner' => &unescape($val{'owner'}),
4167: 'type' => &unescape($val{'type'}),
1.419 raeburn 4168: 'cloners' => &unescape($val{'cloners'}),
1.384 raeburn 4169: );
4170: my $items = &Apache::lonnet::freeze_escape(\%rtnhash);
4171: $qresult.=$key.'='.$items.'&';
4172: }
1.383 raeburn 4173: } else {
1.384 raeburn 4174: if ($is_hash) {
4175: $qresult .= $key.'='.&escape($unesc_val{'descr'}).':'.
4176: &escape($unesc_val{'inst_code'}).':'.
4177: &escape($unesc_val{'owner'}).'&';
4178: } else {
4179: $qresult .= $key.'='.$val{'descr'}.':'.$val{'inst_code'}.
4180: ':'.$val{'owner'}.'&';
4181: }
1.383 raeburn 4182: }
1.266 raeburn 4183: }
1.234 foxr 4184: }
1.311 albertel 4185: if (&untie_domain_hash($hashref)) {
1.234 foxr 4186: chop($qresult);
1.387 albertel 4187: &Reply($client, \$qresult, $userinput);
1.234 foxr 4188: } else {
4189: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4190: "while attempting courseiddump\n", $userinput);
4191: }
4192: } else {
4193: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4194: "while attempting courseiddump\n", $userinput);
4195: }
4196: return 1;
4197: }
4198: ®ister_handler("courseiddump", \&dump_course_id_handler, 0, 1, 0);
1.238 foxr 4199:
1.438 raeburn 4200: sub course_lastaccess_handler {
4201: my ($cmd, $tail, $client) = @_;
4202: my $userinput = "$cmd:$tail";
4203: my ($cdom,$cnum) = split(':',$tail);
4204: my (%lastaccess,$qresult);
4205: my $hashref = &tie_domain_hash($cdom, "nohist_courseids", &GDBM_WRCREAT());
4206: if ($hashref) {
4207: while (my ($key,$value) = each(%$hashref)) {
4208: my ($unesc_key,$lasttime);
4209: $unesc_key = &unescape($key);
4210: if ($cnum) {
4211: next unless ($unesc_key =~ /\Q$cdom\E_\Q$cnum\E$/);
4212: }
4213: if ($unesc_key =~ /^lasttime:($LONCAPA::match_domain\_$LONCAPA::match_courseid)/) {
4214: $lastaccess{$1} = $value;
4215: } else {
4216: my $items = &Apache::lonnet::thaw_unescape($value);
4217: if (ref($items) eq 'HASH') {
4218: unless ($lastaccess{$unesc_key}) {
4219: $lastaccess{$unesc_key} = '';
4220: }
4221: } else {
4222: my @courseitems = split(':',$value);
4223: $lastaccess{$unesc_key} = pop(@courseitems);
4224: }
4225: }
4226: }
4227: foreach my $cid (sort(keys(%lastaccess))) {
4228: $qresult.=&escape($cid).'='.$lastaccess{$cid}.'&';
4229: }
4230: if (&untie_domain_hash($hashref)) {
4231: if ($qresult) {
4232: chop($qresult);
4233: }
4234: &Reply($client, \$qresult, $userinput);
4235: } else {
4236: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4237: "while attempting lastacourseaccess\n", $userinput);
4238: }
4239: } else {
4240: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4241: "while attempting lastcourseaccess\n", $userinput);
4242: }
4243: return 1;
4244: }
4245: ®ister_handler("courselastaccess",\&course_lastaccess_handler, 0, 1, 0);
4246:
1.238 foxr 4247: #
1.348 raeburn 4248: # Puts an unencrypted entry in a namespace db file at the domain level
4249: #
4250: # Parameters:
4251: # $cmd - The command that got us here.
4252: # $tail - Tail of the command (remaining parameters).
4253: # $client - File descriptor connected to client.
4254: # Returns
4255: # 0 - Requested to exit, caller should shut down.
4256: # 1 - Continue processing.
4257: # Side effects:
4258: # reply is written to $client.
4259: #
4260: sub put_domain_handler {
4261: my ($cmd,$tail,$client) = @_;
4262:
4263: my $userinput = "$cmd:$tail";
4264:
4265: my ($udom,$namespace,$what) =split(/:/,$tail,3);
4266: chomp($what);
4267: my @pairs=split(/\&/,$what);
4268: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_WRCREAT(),
4269: "P", $what);
4270: if ($hashref) {
4271: foreach my $pair (@pairs) {
4272: my ($key,$value)=split(/=/,$pair);
4273: $hashref->{$key}=$value;
4274: }
4275: if (&untie_domain_hash($hashref)) {
4276: &Reply($client, "ok\n", $userinput);
4277: } else {
4278: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4279: "while attempting putdom\n", $userinput);
4280: }
4281: } else {
4282: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4283: "while attempting putdom\n", $userinput);
4284: }
4285:
4286: return 1;
4287: }
4288: ®ister_handler("putdom", \&put_domain_handler, 0, 1, 0);
4289:
4290: # Unencrypted get from the namespace database file at the domain level.
4291: # This function retrieves a keyed item from a specific named database in the
4292: # domain directory.
4293: #
4294: # Parameters:
4295: # $cmd - Command request keyword (get).
4296: # $tail - Tail of the command. This is a colon separated list
4297: # consisting of the domain and the 'namespace'
4298: # which selects the gdbm file to do the lookup in,
4299: # & separated list of keys to lookup. Note that
4300: # the values are returned as an & separated list too.
4301: # $client - File descriptor open on the client.
4302: # Returns:
4303: # 1 - Continue processing.
4304: # 0 - Exit.
4305: # Side effects:
4306: # reply is written to $client.
4307: #
4308:
4309: sub get_domain_handler {
4310: my ($cmd, $tail, $client) = @_;
4311:
1.461 foxr 4312:
1.348 raeburn 4313: my $userinput = "$client:$tail";
4314:
4315: my ($udom,$namespace,$what)=split(/:/,$tail,3);
4316: chomp($what);
4317: my @queries=split(/\&/,$what);
4318: my $qresult='';
4319: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_READER());
4320: if ($hashref) {
4321: for (my $i=0;$i<=$#queries;$i++) {
4322: $qresult.="$hashref->{$queries[$i]}&";
4323: }
4324: if (&untie_domain_hash($hashref)) {
4325: $qresult=~s/\&$//;
1.387 albertel 4326: &Reply($client, \$qresult, $userinput);
1.348 raeburn 4327: } else {
4328: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
4329: "while attempting getdom\n",$userinput);
4330: }
4331: } else {
4332: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4333: "while attempting getdom\n",$userinput);
4334: }
4335:
4336: return 1;
4337: }
1.360 raeburn 4338: ®ister_handler("getdom", \&get_domain_handler, 0, 1, 0);
1.348 raeburn 4339:
1.420 raeburn 4340: #
1.238 foxr 4341: # Puts an id to a domains id database.
4342: #
4343: # Parameters:
4344: # $cmd - The command that triggered us.
4345: # $tail - Remainder of the request other than the command. This is a
4346: # colon separated list containing:
4347: # $domain - The domain for which we are writing the id.
4348: # $pairs - The id info to write... this is and & separated list
4349: # of keyword=value.
4350: # $client - Socket open on the client.
4351: # Returns:
4352: # 1 - Continue processing.
4353: # Side effects:
4354: # reply is written to $client.
4355: #
4356: sub put_id_handler {
4357: my ($cmd,$tail,$client) = @_;
4358:
4359:
4360: my $userinput = "$cmd:$tail";
4361:
4362: my ($udom,$what)=split(/:/,$tail);
4363: chomp($what);
4364: my @pairs=split(/\&/,$what);
4365: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
4366: "P", $what);
4367: if ($hashref) {
4368: foreach my $pair (@pairs) {
4369: my ($key,$value)=split(/=/,$pair);
4370: $hashref->{$key}=$value;
4371: }
1.311 albertel 4372: if (&untie_domain_hash($hashref)) {
1.238 foxr 4373: &Reply($client, "ok\n", $userinput);
4374: } else {
4375: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4376: "while attempting idput\n", $userinput);
4377: }
4378: } else {
4379: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4380: "while attempting idput\n", $userinput);
4381: }
4382:
4383: return 1;
4384: }
1.263 albertel 4385: ®ister_handler("idput", \&put_id_handler, 0, 1, 0);
1.238 foxr 4386:
4387: #
4388: # Retrieves a set of id values from the id database.
4389: # Returns an & separated list of results, one for each requested id to the
4390: # client.
4391: #
4392: # Parameters:
4393: # $cmd - Command keyword that caused us to be dispatched.
4394: # $tail - Tail of the command. Consists of a colon separated:
4395: # domain - the domain whose id table we dump
4396: # ids Consists of an & separated list of
4397: # id keywords whose values will be fetched.
4398: # nonexisting keywords will have an empty value.
4399: # $client - Socket open on the client.
4400: #
4401: # Returns:
4402: # 1 - indicating processing should continue.
4403: # Side effects:
4404: # An & separated list of results is written to $client.
4405: #
4406: sub get_id_handler {
4407: my ($cmd, $tail, $client) = @_;
4408:
4409:
4410: my $userinput = "$client:$tail";
4411:
4412: my ($udom,$what)=split(/:/,$tail);
4413: chomp($what);
4414: my @queries=split(/\&/,$what);
4415: my $qresult='';
4416: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_READER());
4417: if ($hashref) {
4418: for (my $i=0;$i<=$#queries;$i++) {
4419: $qresult.="$hashref->{$queries[$i]}&";
4420: }
1.311 albertel 4421: if (&untie_domain_hash($hashref)) {
1.238 foxr 4422: $qresult=~s/\&$//;
1.387 albertel 4423: &Reply($client, \$qresult, $userinput);
1.238 foxr 4424: } else {
4425: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
4426: "while attempting idget\n",$userinput);
4427: }
4428: } else {
4429: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4430: "while attempting idget\n",$userinput);
4431: }
4432:
4433: return 1;
4434: }
1.263 albertel 4435: ®ister_handler("idget", \&get_id_handler, 0, 1, 0);
1.238 foxr 4436:
4437: #
1.299 raeburn 4438: # Puts broadcast e-mail sent by Domain Coordinator in nohist_dcmail database
4439: #
4440: # Parameters
4441: # $cmd - Command keyword that caused us to be dispatched.
4442: # $tail - Tail of the command. Consists of a colon separated:
4443: # domain - the domain whose dcmail we are recording
4444: # email Consists of key=value pair
4445: # where key is unique msgid
4446: # and value is message (in XML)
4447: # $client - Socket open on the client.
4448: #
4449: # Returns:
4450: # 1 - indicating processing should continue.
4451: # Side effects
4452: # reply is written to $client.
4453: #
4454: sub put_dcmail_handler {
4455: my ($cmd,$tail,$client) = @_;
4456: my $userinput = "$cmd:$tail";
1.463 foxr 4457:
4458:
1.299 raeburn 4459: my ($udom,$what)=split(/:/,$tail);
4460: chomp($what);
4461: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
4462: if ($hashref) {
4463: my ($key,$value)=split(/=/,$what);
4464: $hashref->{$key}=$value;
4465: }
1.311 albertel 4466: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4467: &Reply($client, "ok\n", $userinput);
4468: } else {
4469: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4470: "while attempting dcmailput\n", $userinput);
4471: }
4472: return 1;
4473: }
4474: ®ister_handler("dcmailput", \&put_dcmail_handler, 0, 1, 0);
4475:
4476: #
4477: # Retrieves broadcast e-mail from nohist_dcmail database
4478: # Returns to client an & separated list of key=value pairs,
4479: # where key is msgid and value is message information.
4480: #
4481: # Parameters
4482: # $cmd - Command keyword that caused us to be dispatched.
4483: # $tail - Tail of the command. Consists of a colon separated:
4484: # domain - the domain whose dcmail table we dump
4485: # startfilter - beginning of time window
4486: # endfilter - end of time window
4487: # sendersfilter - & separated list of username:domain
4488: # for senders to search for.
4489: # $client - Socket open on the client.
4490: #
4491: # Returns:
4492: # 1 - indicating processing should continue.
4493: # Side effects
4494: # reply (& separated list of msgid=messageinfo pairs) is
4495: # written to $client.
4496: #
4497: sub dump_dcmail_handler {
4498: my ($cmd, $tail, $client) = @_;
4499:
4500: my $userinput = "$cmd:$tail";
4501: my ($udom,$startfilter,$endfilter,$sendersfilter) = split(/:/,$tail);
4502: chomp($sendersfilter);
4503: my @senders = ();
4504: if (defined($startfilter)) {
4505: $startfilter=&unescape($startfilter);
4506: } else {
4507: $startfilter='.';
4508: }
4509: if (defined($endfilter)) {
4510: $endfilter=&unescape($endfilter);
4511: } else {
4512: $endfilter='.';
4513: }
4514: if (defined($sendersfilter)) {
4515: $sendersfilter=&unescape($sendersfilter);
1.300 albertel 4516: @senders = map { &unescape($_) } split(/\&/,$sendersfilter);
1.299 raeburn 4517: }
4518:
4519: my $qresult='';
4520: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
4521: if ($hashref) {
4522: while (my ($key,$value) = each(%$hashref)) {
4523: my $match = 1;
1.303 albertel 4524: my ($timestamp,$subj,$uname,$udom) =
4525: split(/:/,&unescape(&unescape($key)),5); # yes, twice really
1.299 raeburn 4526: $subj = &unescape($subj);
4527: unless ($startfilter eq '.' || !defined($startfilter)) {
4528: if ($timestamp < $startfilter) {
4529: $match = 0;
4530: }
4531: }
4532: unless ($endfilter eq '.' || !defined($endfilter)) {
4533: if ($timestamp > $endfilter) {
4534: $match = 0;
4535: }
4536: }
4537: unless (@senders < 1) {
4538: unless (grep/^$uname:$udom$/,@senders) {
4539: $match = 0;
4540: }
4541: }
4542: if ($match == 1) {
4543: $qresult.=$key.'='.$value.'&';
4544: }
4545: }
1.311 albertel 4546: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4547: chop($qresult);
1.387 albertel 4548: &Reply($client, \$qresult, $userinput);
1.299 raeburn 4549: } else {
4550: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4551: "while attempting dcmaildump\n", $userinput);
4552: }
4553: } else {
4554: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4555: "while attempting dcmaildump\n", $userinput);
4556: }
4557: return 1;
4558: }
4559:
4560: ®ister_handler("dcmaildump", \&dump_dcmail_handler, 0, 1, 0);
4561:
4562: #
4563: # Puts domain roles in nohist_domainroles database
4564: #
4565: # Parameters
4566: # $cmd - Command keyword that caused us to be dispatched.
4567: # $tail - Tail of the command. Consists of a colon separated:
4568: # domain - the domain whose roles we are recording
4569: # role - Consists of key=value pair
4570: # where key is unique role
4571: # and value is start/end date information
4572: # $client - Socket open on the client.
4573: #
4574: # Returns:
4575: # 1 - indicating processing should continue.
4576: # Side effects
4577: # reply is written to $client.
4578: #
4579:
4580: sub put_domainroles_handler {
4581: my ($cmd,$tail,$client) = @_;
4582:
4583: my $userinput = "$cmd:$tail";
4584: my ($udom,$what)=split(/:/,$tail);
4585: chomp($what);
4586: my @pairs=split(/\&/,$what);
4587: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
4588: if ($hashref) {
4589: foreach my $pair (@pairs) {
4590: my ($key,$value)=split(/=/,$pair);
4591: $hashref->{$key}=$value;
4592: }
1.311 albertel 4593: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4594: &Reply($client, "ok\n", $userinput);
4595: } else {
4596: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4597: "while attempting domroleput\n", $userinput);
4598: }
4599: } else {
4600: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4601: "while attempting domroleput\n", $userinput);
4602: }
4603:
4604: return 1;
4605: }
4606:
4607: ®ister_handler("domroleput", \&put_domainroles_handler, 0, 1, 0);
4608:
4609: #
4610: # Retrieves domain roles from nohist_domainroles database
4611: # Returns to client an & separated list of key=value pairs,
4612: # where key is role and value is start and end date information.
4613: #
4614: # Parameters
4615: # $cmd - Command keyword that caused us to be dispatched.
4616: # $tail - Tail of the command. Consists of a colon separated:
4617: # domain - the domain whose domain roles table we dump
4618: # $client - Socket open on the client.
4619: #
4620: # Returns:
4621: # 1 - indicating processing should continue.
4622: # Side effects
4623: # reply (& separated list of role=start/end info pairs) is
4624: # written to $client.
4625: #
4626: sub dump_domainroles_handler {
4627: my ($cmd, $tail, $client) = @_;
4628:
4629: my $userinput = "$cmd:$tail";
4630: my ($udom,$startfilter,$endfilter,$rolesfilter) = split(/:/,$tail);
4631: chomp($rolesfilter);
4632: my @roles = ();
4633: if (defined($startfilter)) {
4634: $startfilter=&unescape($startfilter);
4635: } else {
4636: $startfilter='.';
4637: }
4638: if (defined($endfilter)) {
4639: $endfilter=&unescape($endfilter);
4640: } else {
4641: $endfilter='.';
4642: }
4643: if (defined($rolesfilter)) {
4644: $rolesfilter=&unescape($rolesfilter);
1.300 albertel 4645: @roles = split(/\&/,$rolesfilter);
1.299 raeburn 4646: }
1.421 raeburn 4647:
1.299 raeburn 4648: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
4649: if ($hashref) {
4650: my $qresult = '';
4651: while (my ($key,$value) = each(%$hashref)) {
4652: my $match = 1;
1.421 raeburn 4653: my ($end,$start) = split(/:/,&unescape($value));
1.299 raeburn 4654: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,&unescape($key));
1.421 raeburn 4655: unless (@roles < 1) {
4656: unless (grep/^\Q$trole\E$/,@roles) {
4657: $match = 0;
4658: next;
4659: }
4660: }
1.299 raeburn 4661: unless ($startfilter eq '.' || !defined($startfilter)) {
1.415 raeburn 4662: if ((defined($start)) && ($start >= $startfilter)) {
1.299 raeburn 4663: $match = 0;
1.421 raeburn 4664: next;
1.299 raeburn 4665: }
4666: }
4667: unless ($endfilter eq '.' || !defined($endfilter)) {
1.421 raeburn 4668: if ((defined($end)) && (($end > 0) && ($end <= $endfilter))) {
1.299 raeburn 4669: $match = 0;
1.421 raeburn 4670: next;
1.299 raeburn 4671: }
4672: }
4673: if ($match == 1) {
4674: $qresult.=$key.'='.$value.'&';
4675: }
4676: }
1.311 albertel 4677: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4678: chop($qresult);
1.387 albertel 4679: &Reply($client, \$qresult, $userinput);
1.299 raeburn 4680: } else {
4681: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4682: "while attempting domrolesdump\n", $userinput);
4683: }
4684: } else {
4685: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4686: "while attempting domrolesdump\n", $userinput);
4687: }
4688: return 1;
4689: }
4690:
4691: ®ister_handler("domrolesdump", \&dump_domainroles_handler, 0, 1, 0);
4692:
4693:
1.238 foxr 4694: # Process the tmpput command I'm not sure what this does.. Seems to
4695: # create a file in the lonDaemons/tmp directory of the form $id.tmp
4696: # where Id is the client's ip concatenated with a sequence number.
4697: # The file will contain some value that is passed in. Is this e.g.
4698: # a login token?
4699: #
4700: # Parameters:
4701: # $cmd - The command that got us dispatched.
4702: # $tail - The remainder of the request following $cmd:
4703: # In this case this will be the contents of the file.
4704: # $client - Socket connected to the client.
4705: # Returns:
4706: # 1 indicating processing can continue.
4707: # Side effects:
4708: # A file is created in the local filesystem.
4709: # A reply is sent to the client.
4710: sub tmp_put_handler {
4711: my ($cmd, $what, $client) = @_;
4712:
4713: my $userinput = "$cmd:$what"; # Reconstruct for logging.
4714:
1.347 raeburn 4715: my ($record,$context) = split(/:/,$what);
4716: if ($context ne '') {
4717: chomp($context);
4718: $context = &unescape($context);
4719: }
4720: my ($id,$store);
1.238 foxr 4721: $tmpsnum++;
1.454 raeburn 4722: if (($context eq 'resetpw') || ($context eq 'createaccount')) {
1.347 raeburn 4723: $id = &md5_hex(&md5_hex(time.{}.rand().$$));
4724: } else {
4725: $id = $$.'_'.$clientip.'_'.$tmpsnum;
4726: }
1.238 foxr 4727: $id=~s/\W/\_/g;
1.347 raeburn 4728: $record=~s/\n//g;
1.238 foxr 4729: my $execdir=$perlvar{'lonDaemons'};
4730: if ($store=IO::File->new(">$execdir/tmp/$id.tmp")) {
1.347 raeburn 4731: print $store $record;
1.238 foxr 4732: close $store;
1.387 albertel 4733: &Reply($client, \$id, $userinput);
1.238 foxr 4734: } else {
4735: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
4736: "while attempting tmpput\n", $userinput);
4737: }
4738: return 1;
4739:
4740: }
4741: ®ister_handler("tmpput", \&tmp_put_handler, 0, 1, 0);
1.263 albertel 4742:
1.238 foxr 4743: # Processes the tmpget command. This command returns the contents
4744: # of a temporary resource file(?) created via tmpput.
4745: #
4746: # Paramters:
4747: # $cmd - Command that got us dispatched.
4748: # $id - Tail of the command, contain the id of the resource
4749: # we want to fetch.
4750: # $client - socket open on the client.
4751: # Return:
4752: # 1 - Inidcating processing can continue.
4753: # Side effects:
4754: # A reply is sent to the client.
4755: #
4756: sub tmp_get_handler {
4757: my ($cmd, $id, $client) = @_;
4758:
4759: my $userinput = "$cmd:$id";
4760:
4761:
4762: $id=~s/\W/\_/g;
4763: my $store;
4764: my $execdir=$perlvar{'lonDaemons'};
4765: if ($store=IO::File->new("$execdir/tmp/$id.tmp")) {
4766: my $reply=<$store>;
1.387 albertel 4767: &Reply( $client, \$reply, $userinput);
1.238 foxr 4768: close $store;
4769: } else {
4770: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
4771: "while attempting tmpget\n", $userinput);
4772: }
4773:
4774: return 1;
4775: }
4776: ®ister_handler("tmpget", \&tmp_get_handler, 0, 1, 0);
1.263 albertel 4777:
1.238 foxr 4778: #
4779: # Process the tmpdel command. This command deletes a temp resource
4780: # created by the tmpput command.
4781: #
4782: # Parameters:
4783: # $cmd - Command that got us here.
4784: # $id - Id of the temporary resource created.
4785: # $client - socket open on the client process.
4786: #
4787: # Returns:
4788: # 1 - Indicating processing should continue.
4789: # Side Effects:
4790: # A file is deleted
4791: # A reply is sent to the client.
4792: sub tmp_del_handler {
4793: my ($cmd, $id, $client) = @_;
4794:
4795: my $userinput= "$cmd:$id";
4796:
4797: chomp($id);
4798: $id=~s/\W/\_/g;
4799: my $execdir=$perlvar{'lonDaemons'};
4800: if (unlink("$execdir/tmp/$id.tmp")) {
4801: &Reply($client, "ok\n", $userinput);
4802: } else {
4803: &Failure( $client, "error: ".($!+0)."Unlink tmp Failed ".
4804: "while attempting tmpdel\n", $userinput);
4805: }
4806:
4807: return 1;
4808:
4809: }
4810: ®ister_handler("tmpdel", \&tmp_del_handler, 0, 1, 0);
1.263 albertel 4811:
1.238 foxr 4812: #
1.246 foxr 4813: # Processes the setannounce command. This command
4814: # creates a file named announce.txt in the top directory of
4815: # the documentn root and sets its contents. The announce.txt file is
4816: # printed in its entirety at the LonCAPA login page. Note:
4817: # once the announcement.txt fileis created it cannot be deleted.
4818: # However, setting the contents of the file to empty removes the
4819: # announcement from the login page of loncapa so who cares.
4820: #
4821: # Parameters:
4822: # $cmd - The command that got us dispatched.
4823: # $announcement - The text of the announcement.
4824: # $client - Socket open on the client process.
4825: # Retunrns:
4826: # 1 - Indicating request processing should continue
4827: # Side Effects:
4828: # The file {DocRoot}/announcement.txt is created.
4829: # A reply is sent to $client.
4830: #
4831: sub set_announce_handler {
4832: my ($cmd, $announcement, $client) = @_;
4833:
4834: my $userinput = "$cmd:$announcement";
4835:
4836: chomp($announcement);
4837: $announcement=&unescape($announcement);
4838: if (my $store=IO::File->new('>'.$perlvar{'lonDocRoot'}.
4839: '/announcement.txt')) {
4840: print $store $announcement;
4841: close $store;
4842: &Reply($client, "ok\n", $userinput);
4843: } else {
4844: &Failure($client, "error: ".($!+0)."\n", $userinput);
4845: }
4846:
4847: return 1;
4848: }
4849: ®ister_handler("setannounce", \&set_announce_handler, 0, 1, 0);
1.263 albertel 4850:
1.246 foxr 4851: #
4852: # Return the version of the daemon. This can be used to determine
4853: # the compatibility of cross version installations or, alternatively to
4854: # simply know who's out of date and who isn't. Note that the version
4855: # is returned concatenated with the tail.
4856: # Parameters:
4857: # $cmd - the request that dispatched to us.
4858: # $tail - Tail of the request (client's version?).
4859: # $client - Socket open on the client.
4860: #Returns:
4861: # 1 - continue processing requests.
4862: # Side Effects:
4863: # Replies with version to $client.
4864: sub get_version_handler {
4865: my ($cmd, $tail, $client) = @_;
4866:
4867: my $userinput = $cmd.$tail;
4868:
4869: &Reply($client, &version($userinput)."\n", $userinput);
4870:
4871:
4872: return 1;
4873: }
4874: ®ister_handler("version", \&get_version_handler, 0, 1, 0);
1.263 albertel 4875:
1.246 foxr 4876: # Set the current host and domain. This is used to support
4877: # multihomed systems. Each IP of the system, or even separate daemons
4878: # on the same IP can be treated as handling a separate lonCAPA virtual
4879: # machine. This command selects the virtual lonCAPA. The client always
4880: # knows the right one since it is lonc and it is selecting the domain/system
4881: # from the hosts.tab file.
4882: # Parameters:
4883: # $cmd - Command that dispatched us.
4884: # $tail - Tail of the command (domain/host requested).
4885: # $socket - Socket open on the client.
4886: #
4887: # Returns:
4888: # 1 - Indicates the program should continue to process requests.
4889: # Side-effects:
4890: # The default domain/system context is modified for this daemon.
4891: # a reply is sent to the client.
4892: #
4893: sub set_virtual_host_handler {
4894: my ($cmd, $tail, $socket) = @_;
4895:
4896: my $userinput ="$cmd:$tail";
4897:
4898: &Reply($client, &sethost($userinput)."\n", $userinput);
4899:
4900:
4901: return 1;
4902: }
1.247 albertel 4903: ®ister_handler("sethost", \&set_virtual_host_handler, 0, 1, 0);
1.246 foxr 4904:
4905: # Process a request to exit:
4906: # - "bye" is sent to the client.
4907: # - The client socket is shutdown and closed.
4908: # - We indicate to the caller that we should exit.
4909: # Formal Parameters:
4910: # $cmd - The command that got us here.
4911: # $tail - Tail of the command (empty).
4912: # $client - Socket open on the tail.
4913: # Returns:
4914: # 0 - Indicating the program should exit!!
4915: #
4916: sub exit_handler {
4917: my ($cmd, $tail, $client) = @_;
4918:
4919: my $userinput = "$cmd:$tail";
4920:
4921: &logthis("Client $clientip ($clientname) hanging up: $userinput");
4922: &Reply($client, "bye\n", $userinput);
4923: $client->shutdown(2); # shutdown the socket forcibly.
4924: $client->close();
4925:
4926: return 0;
4927: }
1.248 foxr 4928: ®ister_handler("exit", \&exit_handler, 0,1,1);
4929: ®ister_handler("init", \&exit_handler, 0,1,1);
4930: ®ister_handler("quit", \&exit_handler, 0,1,1);
4931:
4932: # Determine if auto-enrollment is enabled.
4933: # Note that the original had what I believe to be a defect.
4934: # The original returned 0 if the requestor was not a registerd client.
4935: # It should return "refused".
4936: # Formal Parameters:
4937: # $cmd - The command that invoked us.
4938: # $tail - The tail of the command (Extra command parameters.
4939: # $client - The socket open on the client that issued the request.
4940: # Returns:
4941: # 1 - Indicating processing should continue.
4942: #
4943: sub enrollment_enabled_handler {
4944: my ($cmd, $tail, $client) = @_;
4945: my $userinput = $cmd.":".$tail; # For logging purposes.
4946:
4947:
1.337 albertel 4948: my ($cdom) = split(/:/, $tail, 2); # Domain we're asking about.
4949:
1.248 foxr 4950: my $outcome = &localenroll::run($cdom);
1.387 albertel 4951: &Reply($client, \$outcome, $userinput);
1.248 foxr 4952:
4953: return 1;
4954: }
4955: ®ister_handler("autorun", \&enrollment_enabled_handler, 0, 1, 0);
4956:
1.417 raeburn 4957: #
1.423 raeburn 4958: # Validate an institutional code used for a LON-CAPA course.
1.417 raeburn 4959: #
4960: # Formal Parameters:
4961: # $cmd - The command request that got us dispatched.
4962: # $tail - The tail of the command. In this case,
4963: # this is a colon separated set of words that will be split
4964: # into:
1.424 raeburn 4965: # $dom - The domain for which the check of
4966: # institutional course code will occur.
4967: #
4968: # $instcode - The institutional code for the course
4969: # being requested, or validated for rights
4970: # to request.
4971: #
4972: # $owner - The course requestor (who will be the
4973: # course owner, in the form username:domain
4974: #
1.417 raeburn 4975: # $client - Socket open on the client.
4976: # Returns:
4977: # 1 - Indicating processing should continue.
4978: #
4979: sub validate_instcode_handler {
4980: my ($cmd, $tail, $client) = @_;
4981: my $userinput = "$cmd:$tail";
1.423 raeburn 4982: my ($dom,$instcode,$owner) = split(/:/, $tail);
1.422 raeburn 4983: $instcode = &unescape($instcode);
4984: $owner = &unescape($owner);
1.426 raeburn 4985: my ($outcome,$description) =
4986: &localenroll::validate_instcode($dom,$instcode,$owner);
4987: my $result = &escape($outcome).'&'.&escape($description);
4988: &Reply($client, \$result, $userinput);
1.417 raeburn 4989:
4990: return 1;
4991: }
4992: ®ister_handler("autovalidateinstcode", \&validate_instcode_handler, 0, 1, 0);
4993:
1.248 foxr 4994: # Get the official sections for which auto-enrollment is possible.
4995: # Since the admin people won't know about 'unofficial sections'
4996: # we cannot auto-enroll on them.
4997: # Formal Parameters:
4998: # $cmd - The command request that got us dispatched here.
4999: # $tail - The remainder of the request. In our case this
5000: # will be split into:
5001: # $coursecode - The course name from the admin point of view.
5002: # $cdom - The course's domain(?).
5003: # $client - Socket open on the client.
5004: # Returns:
5005: # 1 - Indiciting processing should continue.
5006: #
5007: sub get_sections_handler {
5008: my ($cmd, $tail, $client) = @_;
5009: my $userinput = "$cmd:$tail";
5010:
5011: my ($coursecode, $cdom) = split(/:/, $tail);
5012: my @secs = &localenroll::get_sections($coursecode,$cdom);
5013: my $seclist = &escape(join(':',@secs));
5014:
1.387 albertel 5015: &Reply($client, \$seclist, $userinput);
1.248 foxr 5016:
5017:
5018: return 1;
5019: }
5020: ®ister_handler("autogetsections", \&get_sections_handler, 0, 1, 0);
5021:
5022: # Validate the owner of a new course section.
5023: #
5024: # Formal Parameters:
5025: # $cmd - Command that got us dispatched.
5026: # $tail - the remainder of the command. For us this consists of a
5027: # colon separated string containing:
5028: # $inst - Course Id from the institutions point of view.
5029: # $owner - Proposed owner of the course.
5030: # $cdom - Domain of the course (from the institutions
5031: # point of view?)..
5032: # $client - Socket open on the client.
5033: #
5034: # Returns:
5035: # 1 - Processing should continue.
5036: #
5037: sub validate_course_owner_handler {
5038: my ($cmd, $tail, $client) = @_;
5039: my $userinput = "$cmd:$tail";
1.470 raeburn 5040: my ($inst_course_id, $owner, $cdom, $coowners) = split(/:/, $tail);
5041:
1.336 raeburn 5042: $owner = &unescape($owner);
1.470 raeburn 5043: $coowners = &unescape($coowners);
5044: my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom,$coowners);
1.387 albertel 5045: &Reply($client, \$outcome, $userinput);
1.248 foxr 5046:
5047:
5048:
5049: return 1;
5050: }
5051: ®ister_handler("autonewcourse", \&validate_course_owner_handler, 0, 1, 0);
1.263 albertel 5052:
1.248 foxr 5053: #
5054: # Validate a course section in the official schedule of classes
5055: # from the institutions point of view (part of autoenrollment).
5056: #
5057: # Formal Parameters:
5058: # $cmd - The command request that got us dispatched.
5059: # $tail - The tail of the command. In this case,
5060: # this is a colon separated set of words that will be split
5061: # into:
5062: # $inst_course_id - The course/section id from the
5063: # institutions point of view.
5064: # $cdom - The domain from the institutions
5065: # point of view.
5066: # $client - Socket open on the client.
5067: # Returns:
5068: # 1 - Indicating processing should continue.
5069: #
5070: sub validate_course_section_handler {
5071: my ($cmd, $tail, $client) = @_;
5072: my $userinput = "$cmd:$tail";
5073: my ($inst_course_id, $cdom) = split(/:/, $tail);
5074:
5075: my $outcome=&localenroll::validate_courseID($inst_course_id,$cdom);
1.387 albertel 5076: &Reply($client, \$outcome, $userinput);
1.248 foxr 5077:
5078:
5079: return 1;
5080: }
5081: ®ister_handler("autovalidatecourse", \&validate_course_section_handler, 0, 1, 0);
5082:
5083: #
1.340 raeburn 5084: # Validate course owner's access to enrollment data for specific class section.
5085: #
5086: #
5087: # Formal Parameters:
5088: # $cmd - The command request that got us dispatched.
5089: # $tail - The tail of the command. In this case this is a colon separated
5090: # set of words that will be split into:
5091: # $inst_class - Institutional code for the specific class section
5092: # $courseowner - The escaped username:domain of the course owner
5093: # $cdom - The domain of the course from the institution's
5094: # point of view.
5095: # $client - The socket open on the client.
5096: # Returns:
5097: # 1 - continue processing.
5098: #
5099:
5100: sub validate_class_access_handler {
5101: my ($cmd, $tail, $client) = @_;
5102: my $userinput = "$cmd:$tail";
1.383 raeburn 5103: my ($inst_class,$ownerlist,$cdom) = split(/:/, $tail);
1.392 raeburn 5104: my $owners = &unescape($ownerlist);
1.341 albertel 5105: my $outcome;
5106: eval {
5107: local($SIG{__DIE__})='DEFAULT';
1.392 raeburn 5108: $outcome=&localenroll::check_section($inst_class,$owners,$cdom);
1.341 albertel 5109: };
1.387 albertel 5110: &Reply($client,\$outcome, $userinput);
1.340 raeburn 5111:
5112: return 1;
5113: }
5114: ®ister_handler("autovalidateclass_sec", \&validate_class_access_handler, 0, 1, 0);
5115:
5116: #
5117: # Create a password for a new LON-CAPA user added by auto-enrollment.
5118: # Only used for case where authentication method for new user is localauth
1.248 foxr 5119: #
5120: # Formal Parameters:
5121: # $cmd - The command request that got us dispatched.
5122: # $tail - The tail of the command. In this case this is a colon separated
5123: # set of words that will be split into:
1.340 raeburn 5124: # $authparam - An authentication parameter (localauth parameter).
1.248 foxr 5125: # $cdom - The domain of the course from the institution's
5126: # point of view.
5127: # $client - The socket open on the client.
5128: # Returns:
5129: # 1 - continue processing.
5130: #
5131: sub create_auto_enroll_password_handler {
5132: my ($cmd, $tail, $client) = @_;
5133: my $userinput = "$cmd:$tail";
5134:
5135: my ($authparam, $cdom) = split(/:/, $userinput);
5136:
5137: my ($create_passwd,$authchk);
5138: ($authparam,
5139: $create_passwd,
5140: $authchk) = &localenroll::create_password($authparam,$cdom);
5141:
5142: &Reply($client, &escape($authparam.':'.$create_passwd.':'.$authchk)."\n",
5143: $userinput);
5144:
5145:
5146: return 1;
5147: }
5148: ®ister_handler("autocreatepassword", \&create_auto_enroll_password_handler,
5149: 0, 1, 0);
5150:
5151: # Retrieve and remove temporary files created by/during autoenrollment.
5152: #
5153: # Formal Parameters:
5154: # $cmd - The command that got us dispatched.
5155: # $tail - The tail of the command. In our case this is a colon
5156: # separated list that will be split into:
5157: # $filename - The name of the file to remove.
5158: # The filename is given as a path relative to
5159: # the LonCAPA temp file directory.
5160: # $client - Socket open on the client.
5161: #
5162: # Returns:
5163: # 1 - Continue processing.
5164: sub retrieve_auto_file_handler {
5165: my ($cmd, $tail, $client) = @_;
5166: my $userinput = "cmd:$tail";
5167:
5168: my ($filename) = split(/:/, $tail);
5169:
5170: my $source = $perlvar{'lonDaemons'}.'/tmp/'.$filename;
5171: if ( (-e $source) && ($filename ne '') ) {
5172: my $reply = '';
5173: if (open(my $fh,$source)) {
5174: while (<$fh>) {
5175: chomp($_);
5176: $_ =~ s/^\s+//g;
5177: $_ =~ s/\s+$//g;
5178: $reply .= $_;
5179: }
5180: close($fh);
5181: &Reply($client, &escape($reply)."\n", $userinput);
5182:
5183: # Does this have to be uncommented??!? (RF).
5184: #
5185: # unlink($source);
5186: } else {
5187: &Failure($client, "error\n", $userinput);
5188: }
5189: } else {
5190: &Failure($client, "error\n", $userinput);
5191: }
5192:
5193:
5194: return 1;
5195: }
5196: ®ister_handler("autoretrieve", \&retrieve_auto_file_handler, 0,1,0);
5197:
1.423 raeburn 5198: sub crsreq_checks_handler {
5199: my ($cmd, $tail, $client) = @_;
5200: my $userinput = "$cmd:$tail";
5201: my $dom = $tail;
5202: my $result;
1.424 raeburn 5203: my @reqtypes = ('official','unofficial','community');
1.423 raeburn 5204: eval {
5205: local($SIG{__DIE__})='DEFAULT';
5206: my %validations;
1.424 raeburn 5207: my $response = &localenroll::crsreq_checks($dom,\@reqtypes,
5208: \%validations);
1.423 raeburn 5209: if ($response eq 'ok') {
5210: foreach my $key (keys(%validations)) {
5211: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
5212: }
5213: $result =~ s/\&$//;
5214: } else {
5215: $result = 'error';
5216: }
5217: };
5218: if (!$@) {
5219: &Reply($client, \$result, $userinput);
5220: } else {
5221: &Failure($client,"unknown_cmd\n",$userinput);
5222: }
5223: return 1;
5224: }
5225: ®ister_handler("autocrsreqchecks", \&crsreq_checks_handler, 0, 1, 0);
5226:
5227: sub validate_crsreq_handler {
5228: my ($cmd, $tail, $client) = @_;
5229: my $userinput = "$cmd:$tail";
5230: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = split(/:/, $tail);
5231: $instcode = &unescape($instcode);
5232: $owner = &unescape($owner);
5233: $crstype = &unescape($crstype);
5234: $inststatuslist = &unescape($inststatuslist);
5235: $instcode = &unescape($instcode);
5236: $instseclist = &unescape($instseclist);
5237: my $outcome;
5238: eval {
5239: local($SIG{__DIE__})='DEFAULT';
5240: $outcome = &localenroll::validate_crsreq($dom,$owner,$crstype,
5241: $inststatuslist,$instcode,
5242: $instseclist);
5243: };
5244: if (!$@) {
5245: &Reply($client, \$outcome, $userinput);
5246: } else {
5247: &Failure($client,"unknown_cmd\n",$userinput);
5248: }
5249: return 1;
5250: }
5251: ®ister_handler("autocrsreqvalidation", \&validate_crsreq_handler, 0, 1, 0);
5252:
1.248 foxr 5253: #
5254: # Read and retrieve institutional code format (for support form).
5255: # Formal Parameters:
5256: # $cmd - Command that dispatched us.
5257: # $tail - Tail of the command. In this case it conatins
5258: # the course domain and the coursename.
5259: # $client - Socket open on the client.
5260: # Returns:
5261: # 1 - Continue processing.
5262: #
5263: sub get_institutional_code_format_handler {
5264: my ($cmd, $tail, $client) = @_;
5265: my $userinput = "$cmd:$tail";
5266:
5267: my $reply;
5268: my($cdom,$course) = split(/:/,$tail);
5269: my @pairs = split/\&/,$course;
5270: my %instcodes = ();
5271: my %codes = ();
5272: my @codetitles = ();
5273: my %cat_titles = ();
5274: my %cat_order = ();
5275: foreach (@pairs) {
5276: my ($key,$value) = split/=/,$_;
5277: $instcodes{&unescape($key)} = &unescape($value);
5278: }
5279: my $formatreply = &localenroll::instcode_format($cdom,
5280: \%instcodes,
5281: \%codes,
5282: \@codetitles,
5283: \%cat_titles,
5284: \%cat_order);
5285: if ($formatreply eq 'ok') {
1.365 albertel 5286: my $codes_str = &Apache::lonnet::hash2str(%codes);
5287: my $codetitles_str = &Apache::lonnet::array2str(@codetitles);
5288: my $cat_titles_str = &Apache::lonnet::hash2str(%cat_titles);
5289: my $cat_order_str = &Apache::lonnet::hash2str(%cat_order);
1.248 foxr 5290: &Reply($client,
5291: $codes_str.':'.$codetitles_str.':'.$cat_titles_str.':'
5292: .$cat_order_str."\n",
5293: $userinput);
5294: } else {
5295: # this else branch added by RF since if not ok, lonc will
5296: # hang waiting on reply until timeout.
5297: #
5298: &Reply($client, "format_error\n", $userinput);
5299: }
5300:
5301: return 1;
5302: }
1.265 albertel 5303: ®ister_handler("autoinstcodeformat",
5304: \&get_institutional_code_format_handler,0,1,0);
1.246 foxr 5305:
1.345 raeburn 5306: sub get_institutional_defaults_handler {
5307: my ($cmd, $tail, $client) = @_;
5308: my $userinput = "$cmd:$tail";
5309:
5310: my $dom = $tail;
5311: my %defaults_hash;
5312: my @code_order;
5313: my $outcome;
5314: eval {
5315: local($SIG{__DIE__})='DEFAULT';
5316: $outcome = &localenroll::instcode_defaults($dom,\%defaults_hash,
5317: \@code_order);
5318: };
5319: if (!$@) {
5320: if ($outcome eq 'ok') {
5321: my $result='';
5322: while (my ($key,$value) = each(%defaults_hash)) {
5323: $result.=&escape($key).'='.&escape($value).'&';
5324: }
5325: $result .= 'code_order='.&escape(join('&',@code_order));
1.387 albertel 5326: &Reply($client,\$result,$userinput);
1.345 raeburn 5327: } else {
5328: &Reply($client,"error\n", $userinput);
5329: }
5330: } else {
5331: &Failure($client,"unknown_cmd\n",$userinput);
5332: }
5333: }
5334: ®ister_handler("autoinstcodedefaults",
5335: \&get_institutional_defaults_handler,0,1,0);
5336:
1.416 raeburn 5337: sub get_possible_instcodes_handler {
5338: my ($cmd, $tail, $client) = @_;
5339: my $userinput = "$cmd:$tail";
5340:
5341: my $reply;
5342: my $cdom = $tail;
1.417 raeburn 5343: my (@codetitles,%cat_titles,%cat_order,@code_order);
1.416 raeburn 5344: my $formatreply = &localenroll::possible_instcodes($cdom,
5345: \@codetitles,
5346: \%cat_titles,
1.417 raeburn 5347: \%cat_order,
5348: \@code_order);
1.416 raeburn 5349: if ($formatreply eq 'ok') {
5350: my $result = join('&',map {&escape($_);} (@codetitles)).':';
1.417 raeburn 5351: $result .= join('&',map {&escape($_);} (@code_order)).':';
1.416 raeburn 5352: foreach my $key (keys(%cat_titles)) {
5353: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_titles{$key}).'&';
5354: }
5355: $result =~ s/\&$//;
5356: $result .= ':';
5357: foreach my $key (keys(%cat_order)) {
5358: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_order{$key}).'&';
5359: }
5360: $result =~ s/\&$//;
5361: &Reply($client,\$result,$userinput);
5362: } else {
5363: &Reply($client, "format_error\n", $userinput);
5364: }
5365: return 1;
5366: }
5367: ®ister_handler("autopossibleinstcodes",
5368: \&get_possible_instcodes_handler,0,1,0);
5369:
1.381 raeburn 5370: sub get_institutional_user_rules {
5371: my ($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: $outcome = &localenroll::username_rules($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: $result =~ s/\&$//;
1.387 albertel 5394: &Reply($client,\$result,$userinput);
1.381 raeburn 5395: } else {
5396: &Reply($client,"error\n", $userinput);
5397: }
5398: } else {
5399: &Failure($client,"unknown_cmd\n",$userinput);
5400: }
5401: }
5402: ®ister_handler("instuserrules",\&get_institutional_user_rules,0,1,0);
5403:
1.389 raeburn 5404: sub get_institutional_id_rules {
5405: my ($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';
5412: $outcome = &localenroll::id_rules($dom,\%rules_hash,\@rules_order);
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",$userinput);
5434: }
5435: }
5436: ®ister_handler("instidrules",\&get_institutional_id_rules,0,1,0);
5437:
1.397 raeburn 5438: sub get_institutional_selfcreate_rules {
1.396 raeburn 5439: my ($cmd, $tail, $client) = @_;
5440: my $userinput = "$cmd:$tail";
5441: my $dom = &unescape($tail);
5442: my (%rules_hash,@rules_order);
5443: my $outcome;
5444: eval {
5445: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 5446: $outcome = &localenroll::selfcreate_rules($dom,\%rules_hash,\@rules_order);
1.396 raeburn 5447: };
5448: if (!$@) {
5449: if ($outcome eq 'ok') {
5450: my $result;
5451: foreach my $key (keys(%rules_hash)) {
5452: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
5453: }
5454: $result =~ s/\&$//;
5455: $result .= ':';
5456: if (@rules_order > 0) {
5457: foreach my $item (@rules_order) {
5458: $result .= &escape($item).'&';
5459: }
5460: }
5461: $result =~ s/\&$//;
5462: &Reply($client,\$result,$userinput);
5463: } else {
5464: &Reply($client,"error\n", $userinput);
5465: }
5466: } else {
5467: &Failure($client,"unknown_cmd\n",$userinput);
5468: }
5469: }
1.397 raeburn 5470: ®ister_handler("instemailrules",\&get_institutional_selfcreate_rules,0,1,0);
1.396 raeburn 5471:
1.381 raeburn 5472:
5473: sub institutional_username_check {
5474: my ($cmd, $tail, $client) = @_;
5475: my $userinput = "$cmd:$tail";
5476: my %rulecheck;
5477: my $outcome;
5478: my ($udom,$uname,@rules) = split(/:/,$tail);
5479: $udom = &unescape($udom);
5480: $uname = &unescape($uname);
5481: @rules = map {&unescape($_);} (@rules);
5482: eval {
5483: local($SIG{__DIE__})='DEFAULT';
5484: $outcome = &localenroll::username_check($udom,$uname,\@rules,\%rulecheck);
5485: };
5486: if (!$@) {
5487: if ($outcome eq 'ok') {
5488: my $result='';
5489: foreach my $key (keys(%rulecheck)) {
5490: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
5491: }
1.387 albertel 5492: &Reply($client,\$result,$userinput);
1.381 raeburn 5493: } else {
5494: &Reply($client,"error\n", $userinput);
5495: }
5496: } else {
5497: &Failure($client,"unknown_cmd\n",$userinput);
5498: }
5499: }
5500: ®ister_handler("instrulecheck",\&institutional_username_check,0,1,0);
5501:
1.389 raeburn 5502: sub institutional_id_check {
5503: my ($cmd, $tail, $client) = @_;
5504: my $userinput = "$cmd:$tail";
5505: my %rulecheck;
5506: my $outcome;
5507: my ($udom,$id,@rules) = split(/:/,$tail);
5508: $udom = &unescape($udom);
5509: $id = &unescape($id);
5510: @rules = map {&unescape($_);} (@rules);
5511: eval {
5512: local($SIG{__DIE__})='DEFAULT';
5513: $outcome = &localenroll::id_check($udom,$id,\@rules,\%rulecheck);
5514: };
5515: if (!$@) {
5516: if ($outcome eq 'ok') {
5517: my $result='';
5518: foreach my $key (keys(%rulecheck)) {
5519: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
5520: }
5521: &Reply($client,\$result,$userinput);
5522: } else {
5523: &Reply($client,"error\n", $userinput);
5524: }
5525: } else {
5526: &Failure($client,"unknown_cmd\n",$userinput);
5527: }
5528: }
5529: ®ister_handler("instidrulecheck",\&institutional_id_check,0,1,0);
1.345 raeburn 5530:
1.397 raeburn 5531: sub institutional_selfcreate_check {
1.396 raeburn 5532: my ($cmd, $tail, $client) = @_;
5533: my $userinput = "$cmd:$tail";
5534: my %rulecheck;
5535: my $outcome;
5536: my ($udom,$email,@rules) = split(/:/,$tail);
5537: $udom = &unescape($udom);
5538: $email = &unescape($email);
5539: @rules = map {&unescape($_);} (@rules);
5540: eval {
5541: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 5542: $outcome = &localenroll::selfcreate_check($udom,$email,\@rules,\%rulecheck);
1.396 raeburn 5543: };
5544: if (!$@) {
5545: if ($outcome eq 'ok') {
5546: my $result='';
5547: foreach my $key (keys(%rulecheck)) {
5548: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
5549: }
5550: &Reply($client,\$result,$userinput);
5551: } else {
5552: &Reply($client,"error\n", $userinput);
5553: }
5554: } else {
5555: &Failure($client,"unknown_cmd\n",$userinput);
5556: }
5557: }
1.397 raeburn 5558: ®ister_handler("instselfcreatecheck",\&institutional_selfcreate_check,0,1,0);
1.396 raeburn 5559:
1.317 raeburn 5560: # Get domain specific conditions for import of student photographs to a course
5561: #
5562: # Retrieves information from photo_permission subroutine in localenroll.
5563: # Returns outcome (ok) if no processing errors, and whether course owner is
5564: # required to accept conditions of use (yes/no).
5565: #
5566: #
5567: sub photo_permission_handler {
5568: my ($cmd, $tail, $client) = @_;
5569: my $userinput = "$cmd:$tail";
5570: my $cdom = $tail;
5571: my ($perm_reqd,$conditions);
1.320 albertel 5572: my $outcome;
5573: eval {
5574: local($SIG{__DIE__})='DEFAULT';
5575: $outcome = &localenroll::photo_permission($cdom,\$perm_reqd,
5576: \$conditions);
5577: };
5578: if (!$@) {
5579: &Reply($client, &escape($outcome.':'.$perm_reqd.':'. $conditions)."\n",
5580: $userinput);
5581: } else {
5582: &Failure($client,"unknown_cmd\n",$userinput);
5583: }
5584: return 1;
1.317 raeburn 5585: }
5586: ®ister_handler("autophotopermission",\&photo_permission_handler,0,1,0);
5587:
5588: #
5589: # Checks if student photo is available for a user in the domain, in the user's
5590: # directory (in /userfiles/internal/studentphoto.jpg).
5591: # Uses localstudentphoto:fetch() to ensure there is an up to date copy of
5592: # the student's photo.
5593:
5594: sub photo_check_handler {
5595: my ($cmd, $tail, $client) = @_;
5596: my $userinput = "$cmd:$tail";
5597: my ($udom,$uname,$pid) = split(/:/,$tail);
5598: $udom = &unescape($udom);
5599: $uname = &unescape($uname);
5600: $pid = &unescape($pid);
5601: my $path=&propath($udom,$uname).'/userfiles/internal/';
5602: if (!-e $path) {
5603: &mkpath($path);
5604: }
5605: my $response;
5606: my $result = &localstudentphoto::fetch($udom,$uname,$pid,\$response);
5607: $result .= ':'.$response;
5608: &Reply($client, &escape($result)."\n",$userinput);
1.320 albertel 5609: return 1;
1.317 raeburn 5610: }
5611: ®ister_handler("autophotocheck",\&photo_check_handler,0,1,0);
5612:
5613: #
5614: # Retrieve information from localenroll about whether to provide a button
5615: # for users who have enbled import of student photos to initiate an
5616: # update of photo files for registered students. Also include
5617: # comment to display alongside button.
5618:
5619: sub photo_choice_handler {
5620: my ($cmd, $tail, $client) = @_;
5621: my $userinput = "$cmd:$tail";
5622: my $cdom = &unescape($tail);
1.320 albertel 5623: my ($update,$comment);
5624: eval {
5625: local($SIG{__DIE__})='DEFAULT';
5626: ($update,$comment) = &localenroll::manager_photo_update($cdom);
5627: };
5628: if (!$@) {
5629: &Reply($client,&escape($update).':'.&escape($comment)."\n",$userinput);
5630: } else {
5631: &Failure($client,"unknown_cmd\n",$userinput);
5632: }
5633: return 1;
1.317 raeburn 5634: }
5635: ®ister_handler("autophotochoice",\&photo_choice_handler,0,1,0);
5636:
1.265 albertel 5637: #
5638: # Gets a student's photo to exist (in the correct image type) in the user's
5639: # directory.
5640: # Formal Parameters:
5641: # $cmd - The command request that got us dispatched.
5642: # $tail - A colon separated set of words that will be split into:
5643: # $domain - student's domain
5644: # $uname - student username
5645: # $type - image type desired
5646: # $client - The socket open on the client.
5647: # Returns:
5648: # 1 - continue processing.
1.317 raeburn 5649:
1.265 albertel 5650: sub student_photo_handler {
5651: my ($cmd, $tail, $client) = @_;
1.317 raeburn 5652: my ($domain,$uname,$ext,$type) = split(/:/, $tail);
1.265 albertel 5653:
1.317 raeburn 5654: my $path=&propath($domain,$uname). '/userfiles/internal/';
5655: my $filename = 'studentphoto.'.$ext;
5656: if ($type eq 'thumbnail') {
5657: $filename = 'studentphoto_tn.'.$ext;
5658: }
5659: if (-e $path.$filename) {
1.265 albertel 5660: &Reply($client,"ok\n","$cmd:$tail");
5661: return 1;
5662: }
5663: &mkpath($path);
1.317 raeburn 5664: my $file;
5665: if ($type eq 'thumbnail') {
1.320 albertel 5666: eval {
5667: local($SIG{__DIE__})='DEFAULT';
5668: $file=&localstudentphoto::fetch_thumbnail($domain,$uname);
5669: };
1.317 raeburn 5670: } else {
5671: $file=&localstudentphoto::fetch($domain,$uname);
5672: }
1.265 albertel 5673: if (!$file) {
5674: &Failure($client,"unavailable\n","$cmd:$tail");
5675: return 1;
5676: }
1.317 raeburn 5677: if (!-e $path.$filename) { &convert_photo($file,$path.$filename); }
5678: if (-e $path.$filename) {
1.265 albertel 5679: &Reply($client,"ok\n","$cmd:$tail");
5680: return 1;
5681: }
5682: &Failure($client,"unable_to_convert\n","$cmd:$tail");
5683: return 1;
5684: }
5685: ®ister_handler("studentphoto", \&student_photo_handler, 0, 1, 0);
1.246 foxr 5686:
1.361 raeburn 5687: sub inst_usertypes_handler {
5688: my ($cmd, $domain, $client) = @_;
5689: my $res;
5690: my $userinput = $cmd.":".$domain; # For logging purposes.
1.370 albertel 5691: my (%typeshash,@order,$result);
5692: eval {
5693: local($SIG{__DIE__})='DEFAULT';
5694: $result=&localenroll::inst_usertypes($domain,\%typeshash,\@order);
5695: };
5696: if ($result eq 'ok') {
1.361 raeburn 5697: if (keys(%typeshash) > 0) {
5698: foreach my $key (keys(%typeshash)) {
5699: $res.=&escape($key).'='.&escape($typeshash{$key}).'&';
5700: }
5701: }
5702: $res=~s/\&$//;
5703: $res .= ':';
5704: if (@order > 0) {
5705: foreach my $item (@order) {
5706: $res .= &escape($item).'&';
5707: }
5708: }
5709: $res=~s/\&$//;
5710: }
1.387 albertel 5711: &Reply($client, \$res, $userinput);
1.361 raeburn 5712: return 1;
5713: }
5714: ®ister_handler("inst_usertypes", \&inst_usertypes_handler, 0, 1, 0);
5715:
1.264 albertel 5716: # mkpath makes all directories for a file, expects an absolute path with a
5717: # file or a trailing / if just a dir is passed
5718: # returns 1 on success 0 on failure
5719: sub mkpath {
5720: my ($file)=@_;
5721: my @parts=split(/\//,$file,-1);
5722: my $now=$parts[0].'/'.$parts[1].'/'.$parts[2];
5723: for (my $i=3;$i<= ($#parts-1);$i++) {
1.265 albertel 5724: $now.='/'.$parts[$i];
1.264 albertel 5725: if (!-e $now) {
5726: if (!mkdir($now,0770)) { return 0; }
5727: }
5728: }
5729: return 1;
5730: }
5731:
1.207 foxr 5732: #---------------------------------------------------------------
5733: #
5734: # Getting, decoding and dispatching requests:
5735: #
5736: #
5737: # Get a Request:
5738: # Gets a Request message from the client. The transaction
5739: # is defined as a 'line' of text. We remove the new line
5740: # from the text line.
1.226 foxr 5741: #
1.211 albertel 5742: sub get_request {
1.207 foxr 5743: my $input = <$client>;
5744: chomp($input);
1.226 foxr 5745:
1.234 foxr 5746: &Debug("get_request: Request = $input\n");
1.207 foxr 5747:
5748: &status('Processing '.$clientname.':'.$input);
5749:
5750: return $input;
5751: }
1.212 foxr 5752: #---------------------------------------------------------------
5753: #
5754: # Process a request. This sub should shrink as each action
5755: # gets farmed out into a separat sub that is registered
5756: # with the dispatch hash.
5757: #
5758: # Parameters:
5759: # user_input - The request received from the client (lonc).
5760: # Returns:
5761: # true to keep processing, false if caller should exit.
5762: #
5763: sub process_request {
5764: my ($userinput) = @_; # Easier for now to break style than to
5765: # fix all the userinput -> user_input.
5766: my $wasenc = 0; # True if request was encrypted.
5767: # ------------------------------------------------------------ See if encrypted
1.322 albertel 5768: # for command
5769: # sethost:<server>
5770: # <command>:<args>
5771: # we just send it to the processor
5772: # for
5773: # sethost:<server>:<command>:<args>
5774: # we do the implict set host and then do the command
5775: if ($userinput =~ /^sethost:/) {
5776: (my $cmd,my $newid,$userinput) = split(':',$userinput,3);
5777: if (defined($userinput)) {
5778: &sethost("$cmd:$newid");
5779: } else {
5780: $userinput = "$cmd:$newid";
5781: }
5782: }
5783:
1.212 foxr 5784: if ($userinput =~ /^enc/) {
5785: $userinput = decipher($userinput);
5786: $wasenc=1;
5787: if(!$userinput) { # Cipher not defined.
1.251 foxr 5788: &Failure($client, "error: Encrypted data without negotated key\n");
1.212 foxr 5789: return 0;
5790: }
5791: }
5792: Debug("process_request: $userinput\n");
5793:
1.213 foxr 5794: #
5795: # The 'correct way' to add a command to lond is now to
5796: # write a sub to execute it and Add it to the command dispatch
5797: # hash via a call to register_handler.. The comments to that
5798: # sub should give you enough to go on to show how to do this
5799: # along with the examples that are building up as this code
5800: # is getting refactored. Until all branches of the
5801: # if/elseif monster below have been factored out into
5802: # separate procesor subs, if the dispatch hash is missing
5803: # the command keyword, we will fall through to the remainder
5804: # of the if/else chain below in order to keep this thing in
5805: # working order throughout the transmogrification.
5806:
5807: my ($command, $tail) = split(/:/, $userinput, 2);
5808: chomp($command);
5809: chomp($tail);
5810: $tail =~ s/(\r)//; # This helps people debugging with e.g. telnet.
1.214 foxr 5811: $command =~ s/(\r)//; # And this too for parameterless commands.
5812: if(!$tail) {
5813: $tail =""; # defined but blank.
5814: }
1.213 foxr 5815:
5816: &Debug("Command received: $command, encoded = $wasenc");
5817:
5818: if(defined $Dispatcher{$command}) {
5819:
5820: my $dispatch_info = $Dispatcher{$command};
5821: my $handler = $$dispatch_info[0];
5822: my $need_encode = $$dispatch_info[1];
5823: my $client_types = $$dispatch_info[2];
5824: Debug("Matched dispatch hash: mustencode: $need_encode "
5825: ."ClientType $client_types");
5826:
5827: # Validate the request:
5828:
5829: my $ok = 1;
5830: my $requesterprivs = 0;
5831: if(&isClient()) {
5832: $requesterprivs |= $CLIENT_OK;
5833: }
5834: if(&isManager()) {
5835: $requesterprivs |= $MANAGER_OK;
5836: }
5837: if($need_encode && (!$wasenc)) {
5838: Debug("Must encode but wasn't: $need_encode $wasenc");
5839: $ok = 0;
5840: }
5841: if(($client_types & $requesterprivs) == 0) {
5842: Debug("Client not privileged to do this operation");
5843: $ok = 0;
5844: }
5845:
5846: if($ok) {
5847: Debug("Dispatching to handler $command $tail");
5848: my $keep_going = &$handler($command, $tail, $client);
5849: return $keep_going;
5850: } else {
5851: Debug("Refusing to dispatch because client did not match requirements");
5852: Failure($client, "refused\n", $userinput);
5853: return 1;
5854: }
5855:
5856: }
5857:
1.262 foxr 5858: print $client "unknown_cmd\n";
1.212 foxr 5859: # -------------------------------------------------------------------- complete
5860: Debug("process_request - returning 1");
5861: return 1;
5862: }
1.207 foxr 5863: #
5864: # Decipher encoded traffic
5865: # Parameters:
5866: # input - Encoded data.
5867: # Returns:
5868: # Decoded data or undef if encryption key was not yet negotiated.
5869: # Implicit input:
5870: # cipher - This global holds the negotiated encryption key.
5871: #
1.211 albertel 5872: sub decipher {
1.207 foxr 5873: my ($input) = @_;
5874: my $output = '';
1.212 foxr 5875:
5876:
1.207 foxr 5877: if($cipher) {
5878: my($enc, $enclength, $encinput) = split(/:/, $input);
5879: for(my $encidx = 0; $encidx < length($encinput); $encidx += 16) {
5880: $output .=
5881: $cipher->decrypt(pack("H16", substr($encinput, $encidx, 16)));
5882: }
5883: return substr($output, 0, $enclength);
5884: } else {
5885: return undef;
5886: }
5887: }
5888:
5889: #
5890: # Register a command processor. This function is invoked to register a sub
5891: # to process a request. Once registered, the ProcessRequest sub can automatically
5892: # dispatch requests to an appropriate sub, and do the top level validity checking
5893: # as well:
5894: # - Is the keyword recognized.
5895: # - Is the proper client type attempting the request.
5896: # - Is the request encrypted if it has to be.
5897: # Parameters:
5898: # $request_name - Name of the request being registered.
5899: # This is the command request that will match
5900: # against the hash keywords to lookup the information
5901: # associated with the dispatch information.
5902: # $procedure - Reference to a sub to call to process the request.
5903: # All subs get called as follows:
5904: # Procedure($cmd, $tail, $replyfd, $key)
5905: # $cmd - the actual keyword that invoked us.
5906: # $tail - the tail of the request that invoked us.
5907: # $replyfd- File descriptor connected to the client
5908: # $must_encode - True if the request must be encoded to be good.
5909: # $client_ok - True if it's ok for a client to request this.
5910: # $manager_ok - True if it's ok for a manager to request this.
5911: # Side effects:
5912: # - On success, the Dispatcher hash has an entry added for the key $RequestName
5913: # - On failure, the program will die as it's a bad internal bug to try to
5914: # register a duplicate command handler.
5915: #
1.211 albertel 5916: sub register_handler {
1.212 foxr 5917: my ($request_name,$procedure,$must_encode, $client_ok,$manager_ok) = @_;
1.207 foxr 5918:
5919: # Don't allow duplication#
5920:
5921: if (defined $Dispatcher{$request_name}) {
5922: die "Attempting to define a duplicate request handler for $request_name\n";
5923: }
5924: # Build the client type mask:
5925:
5926: my $client_type_mask = 0;
5927: if($client_ok) {
5928: $client_type_mask |= $CLIENT_OK;
5929: }
5930: if($manager_ok) {
5931: $client_type_mask |= $MANAGER_OK;
5932: }
5933:
5934: # Enter the hash:
5935:
5936: my @entry = ($procedure, $must_encode, $client_type_mask);
5937:
5938: $Dispatcher{$request_name} = \@entry;
5939:
5940: }
5941:
5942:
5943: #------------------------------------------------------------------
5944:
5945:
5946:
5947:
1.141 foxr 5948: #
1.96 foxr 5949: # Convert an error return code from lcpasswd to a string value.
5950: #
5951: sub lcpasswdstrerror {
5952: my $ErrorCode = shift;
1.97 foxr 5953: if(($ErrorCode < 0) || ($ErrorCode > $lastpwderror)) {
1.96 foxr 5954: return "lcpasswd Unrecognized error return value ".$ErrorCode;
5955: } else {
1.98 foxr 5956: return $passwderrors[$ErrorCode];
1.96 foxr 5957: }
5958: }
5959:
1.97 foxr 5960: #
5961: # Convert an error return code from lcuseradd to a string value:
5962: #
5963: sub lcuseraddstrerror {
5964: my $ErrorCode = shift;
5965: if(($ErrorCode < 0) || ($ErrorCode > $lastadderror)) {
5966: return "lcuseradd - Unrecognized error code: ".$ErrorCode;
5967: } else {
1.98 foxr 5968: return $adderrors[$ErrorCode];
1.97 foxr 5969: }
5970: }
5971:
1.23 harris41 5972: # grabs exception and records it to log before exiting
5973: sub catchexception {
1.27 albertel 5974: my ($error)=@_;
1.25 www 5975: $SIG{'QUIT'}='DEFAULT';
5976: $SIG{__DIE__}='DEFAULT';
1.165 albertel 5977: &status("Catching exception");
1.190 albertel 5978: &logthis("<font color='red'>CRITICAL: "
1.373 albertel 5979: ."ABNORMAL EXIT. Child $$ for server ".$perlvar{'lonHostID'}." died through "
1.27 albertel 5980: ."a crash with this error msg->[$error]</font>");
1.57 www 5981: &logthis('Famous last words: '.$status.' - '.$lastlog);
1.27 albertel 5982: if ($client) { print $client "error: $error\n"; }
1.59 www 5983: $server->close();
1.27 albertel 5984: die($error);
1.23 harris41 5985: }
1.63 www 5986: sub timeout {
1.165 albertel 5987: &status("Handling Timeout");
1.190 albertel 5988: &logthis("<font color='red'>CRITICAL: TIME OUT ".$$."</font>");
1.63 www 5989: &catchexception('Timeout');
5990: }
1.22 harris41 5991: # -------------------------------- Set signal handlers to record abnormal exits
5992:
1.226 foxr 5993:
1.22 harris41 5994: $SIG{'QUIT'}=\&catchexception;
5995: $SIG{__DIE__}=\&catchexception;
5996:
1.81 matthew 5997: # ---------------------------------- Read loncapa_apache.conf and loncapa.conf
1.95 harris41 5998: &status("Read loncapa.conf and loncapa_apache.conf");
5999: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
1.141 foxr 6000: %perlvar=%{$perlvarref};
1.80 harris41 6001: undef $perlvarref;
1.19 www 6002:
1.35 harris41 6003: # ----------------------------- Make sure this process is running from user=www
6004: my $wwwid=getpwnam('www');
6005: if ($wwwid!=$<) {
1.134 albertel 6006: my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
6007: my $subj="LON: $currenthostid User ID mismatch";
1.37 harris41 6008: system("echo 'User ID mismatch. lond must be run as user www.' |\
1.35 harris41 6009: mailto $emailto -s '$subj' > /dev/null");
6010: exit 1;
6011: }
6012:
1.19 www 6013: # --------------------------------------------- Check if other instance running
6014:
6015: my $pidfile="$perlvar{'lonDaemons'}/logs/lond.pid";
6016:
6017: if (-e $pidfile) {
6018: my $lfh=IO::File->new("$pidfile");
6019: my $pide=<$lfh>;
6020: chomp($pide);
1.29 harris41 6021: if (kill 0 => $pide) { die "already running"; }
1.19 www 6022: }
1.1 albertel 6023:
6024: # ------------------------------------------------------------- Read hosts file
6025:
6026:
6027:
6028: # establish SERVER socket, bind and listen.
6029: $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},
6030: Type => SOCK_STREAM,
6031: Proto => 'tcp',
1.469 foxr 6032: ReuseAddr => 1,
1.1 albertel 6033: Listen => 10 )
1.29 harris41 6034: or die "making socket: $@\n";
1.1 albertel 6035:
6036: # --------------------------------------------------------- Do global variables
6037:
6038: # global variables
6039:
1.134 albertel 6040: my %children = (); # keys are current child process IDs
1.1 albertel 6041:
6042: sub REAPER { # takes care of dead children
6043: $SIG{CHLD} = \&REAPER;
1.165 albertel 6044: &status("Handling child death");
1.178 foxr 6045: my $pid;
6046: do {
6047: $pid = waitpid(-1,&WNOHANG());
6048: if (defined($children{$pid})) {
6049: &logthis("Child $pid died");
6050: delete($children{$pid});
1.183 albertel 6051: } elsif ($pid > 0) {
1.178 foxr 6052: &logthis("Unknown Child $pid died");
6053: }
6054: } while ( $pid > 0 );
6055: foreach my $child (keys(%children)) {
6056: $pid = waitpid($child,&WNOHANG());
6057: if ($pid > 0) {
6058: &logthis("Child $child - $pid looks like we missed it's death");
6059: delete($children{$pid});
6060: }
1.176 albertel 6061: }
1.165 albertel 6062: &status("Finished Handling child death");
1.1 albertel 6063: }
6064:
6065: sub HUNTSMAN { # signal handler for SIGINT
1.165 albertel 6066: &status("Killing children (INT)");
1.1 albertel 6067: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
6068: kill 'INT' => keys %children;
1.59 www 6069: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.1 albertel 6070: my $execdir=$perlvar{'lonDaemons'};
6071: unlink("$execdir/logs/lond.pid");
1.190 albertel 6072: &logthis("<font color='red'>CRITICAL: Shutting down</font>");
1.165 albertel 6073: &status("Done killing children");
1.1 albertel 6074: exit; # clean up with dignity
6075: }
6076:
6077: sub HUPSMAN { # signal handler for SIGHUP
6078: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
1.165 albertel 6079: &status("Killing children for restart (HUP)");
1.1 albertel 6080: kill 'INT' => keys %children;
1.59 www 6081: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.190 albertel 6082: &logthis("<font color='red'>CRITICAL: Restarting</font>");
1.134 albertel 6083: my $execdir=$perlvar{'lonDaemons'};
1.30 harris41 6084: unlink("$execdir/logs/lond.pid");
1.165 albertel 6085: &status("Restarting self (HUP)");
1.1 albertel 6086: exec("$execdir/lond"); # here we go again
6087: }
6088:
1.144 foxr 6089: #
1.148 foxr 6090: # Reload the Apache daemon's state.
1.150 foxr 6091: # This is done by invoking /home/httpd/perl/apachereload
6092: # a setuid perl script that can be root for us to do this job.
1.148 foxr 6093: #
6094: sub ReloadApache {
1.473 ! raeburn 6095: # --------------------------- Handle case of another apachereload process (locking)
1.150 foxr 6096: my $execdir = $perlvar{'lonDaemons'};
6097: my $script = $execdir."/apachereload";
6098: system($script);
1.148 foxr 6099: }
6100:
6101: #
1.144 foxr 6102: # Called in response to a USR2 signal.
6103: # - Reread hosts.tab
6104: # - All children connected to hosts that were removed from hosts.tab
6105: # are killed via SIGINT
6106: # - All children connected to previously existing hosts are sent SIGUSR1
6107: # - Our internal hosts hash is updated to reflect the new contents of
6108: # hosts.tab causing connections from hosts added to hosts.tab to
6109: # now be honored.
6110: #
6111: sub UpdateHosts {
1.165 albertel 6112: &status("Reload hosts.tab");
1.147 foxr 6113: logthis('<font color="blue"> Updating connections </font>');
1.148 foxr 6114: #
6115: # The %children hash has the set of IP's we currently have children
6116: # on. These need to be matched against records in the hosts.tab
6117: # Any ip's no longer in the table get killed off they correspond to
6118: # either dropped or changed hosts. Note that the re-read of the table
6119: # will take care of new and changed hosts as connections come into being.
6120:
1.371 albertel 6121: &Apache::lonnet::reset_hosts_info();
1.148 foxr 6122:
1.368 albertel 6123: foreach my $child (keys(%children)) {
1.148 foxr 6124: my $childip = $children{$child};
1.374 albertel 6125: if ($childip ne '127.0.0.1'
6126: && !defined(&Apache::lonnet::get_hosts_from_ip($childip))) {
1.149 foxr 6127: logthis('<font color="blue"> UpdateHosts killing child '
6128: ." $child for ip $childip </font>");
1.148 foxr 6129: kill('INT', $child);
1.149 foxr 6130: } else {
6131: logthis('<font color="green"> keeping child for ip '
6132: ." $childip (pid=$child) </font>");
1.148 foxr 6133: }
6134: }
6135: ReloadApache;
1.165 albertel 6136: &status("Finished reloading hosts.tab");
1.144 foxr 6137: }
6138:
1.148 foxr 6139:
1.57 www 6140: sub checkchildren {
1.165 albertel 6141: &status("Checking on the children (sending signals)");
1.57 www 6142: &initnewstatus();
6143: &logstatus();
6144: &logthis('Going to check on the children');
1.134 albertel 6145: my $docdir=$perlvar{'lonDocRoot'};
1.61 harris41 6146: foreach (sort keys %children) {
1.221 albertel 6147: #sleep 1;
1.57 www 6148: unless (kill 'USR1' => $_) {
6149: &logthis ('Child '.$_.' is dead');
6150: &logstatus($$.' is dead');
1.221 albertel 6151: delete($children{$_});
1.57 www 6152: }
1.61 harris41 6153: }
1.63 www 6154: sleep 5;
1.212 foxr 6155: $SIG{ALRM} = sub { Debug("timeout");
6156: die "timeout"; };
1.113 albertel 6157: $SIG{__DIE__} = 'DEFAULT';
1.165 albertel 6158: &status("Checking on the children (waiting for reports)");
1.63 www 6159: foreach (sort keys %children) {
6160: unless (-e "$docdir/lon-status/londchld/$_.txt") {
1.113 albertel 6161: eval {
6162: alarm(300);
1.63 www 6163: &logthis('Child '.$_.' did not respond');
1.67 albertel 6164: kill 9 => $_;
1.131 albertel 6165: #$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
6166: #$subj="LON: $currenthostid killed lond process $_";
6167: #my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null`;
6168: #$execdir=$perlvar{'lonDaemons'};
6169: #$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_`;
1.221 albertel 6170: delete($children{$_});
1.113 albertel 6171: alarm(0);
6172: }
1.63 www 6173: }
6174: }
1.113 albertel 6175: $SIG{ALRM} = 'DEFAULT';
1.155 albertel 6176: $SIG{__DIE__} = \&catchexception;
1.165 albertel 6177: &status("Finished checking children");
1.221 albertel 6178: &logthis('Finished Checking children');
1.57 www 6179: }
6180:
1.1 albertel 6181: # --------------------------------------------------------------------- Logging
6182:
6183: sub logthis {
6184: my $message=shift;
6185: my $execdir=$perlvar{'lonDaemons'};
6186: my $fh=IO::File->new(">>$execdir/logs/lond.log");
6187: my $now=time;
6188: my $local=localtime($now);
1.58 www 6189: $lastlog=$local.': '.$message;
1.1 albertel 6190: print $fh "$local ($$): $message\n";
6191: }
6192:
1.77 foxr 6193: # ------------------------- Conditional log if $DEBUG true.
6194: sub Debug {
6195: my $message = shift;
6196: if($DEBUG) {
6197: &logthis($message);
6198: }
6199: }
1.161 foxr 6200:
6201: #
6202: # Sub to do replies to client.. this gives a hook for some
6203: # debug tracing too:
6204: # Parameters:
6205: # fd - File open on client.
6206: # reply - Text to send to client.
6207: # request - Original request from client.
6208: #
6209: sub Reply {
1.192 foxr 6210: my ($fd, $reply, $request) = @_;
1.387 albertel 6211: if (ref($reply)) {
6212: print $fd $$reply;
6213: print $fd "\n";
6214: if ($DEBUG) { Debug("Request was $request Reply was $$reply"); }
6215: } else {
6216: print $fd $reply;
6217: if ($DEBUG) { Debug("Request was $request Reply was $reply"); }
6218: }
1.212 foxr 6219: $Transactions++;
6220: }
6221:
6222:
6223: #
6224: # Sub to report a failure.
6225: # This function:
6226: # - Increments the failure statistic counters.
6227: # - Invokes Reply to send the error message to the client.
6228: # Parameters:
6229: # fd - File descriptor open on the client
6230: # reply - Reply text to emit.
6231: # request - The original request message (used by Reply
6232: # to debug if that's enabled.
6233: # Implicit outputs:
6234: # $Failures- The number of failures is incremented.
6235: # Reply (invoked here) sends a message to the
6236: # client:
6237: #
6238: sub Failure {
6239: my $fd = shift;
6240: my $reply = shift;
6241: my $request = shift;
6242:
6243: $Failures++;
6244: Reply($fd, $reply, $request); # That's simple eh?
1.161 foxr 6245: }
1.57 www 6246: # ------------------------------------------------------------------ Log status
6247:
6248: sub logstatus {
1.178 foxr 6249: &status("Doing logging");
6250: my $docdir=$perlvar{'lonDocRoot'};
6251: {
6252: my $fh=IO::File->new(">$docdir/lon-status/londchld/$$.txt");
1.200 matthew 6253: print $fh $status."\n".$lastlog."\n".time."\n$keymode";
1.178 foxr 6254: $fh->close();
6255: }
1.221 albertel 6256: &status("Finished $$.txt");
6257: {
6258: open(LOG,">>$docdir/lon-status/londstatus.txt");
6259: flock(LOG,LOCK_EX);
6260: print LOG $$."\t".$clientname."\t".$currenthostid."\t"
6261: .$status."\t".$lastlog."\t $keymode\n";
1.275 albertel 6262: flock(LOG,LOCK_UN);
1.221 albertel 6263: close(LOG);
6264: }
1.178 foxr 6265: &status("Finished logging");
1.57 www 6266: }
6267:
6268: sub initnewstatus {
6269: my $docdir=$perlvar{'lonDocRoot'};
6270: my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt");
1.460 foxr 6271: my $now=time();
1.57 www 6272: my $local=localtime($now);
6273: print $fh "LOND status $local - parent $$\n\n";
1.64 www 6274: opendir(DIR,"$docdir/lon-status/londchld");
1.134 albertel 6275: while (my $filename=readdir(DIR)) {
1.64 www 6276: unlink("$docdir/lon-status/londchld/$filename");
6277: }
6278: closedir(DIR);
1.57 www 6279: }
6280:
6281: # -------------------------------------------------------------- Status setting
6282:
6283: sub status {
6284: my $what=shift;
6285: my $now=time;
6286: my $local=localtime($now);
1.178 foxr 6287: $status=$local.': '.$what;
6288: $0='lond: '.$what.' '.$local;
1.57 www 6289: }
1.11 www 6290:
1.13 www 6291: # -------------------------------------------------------------- Talk to lonsql
6292:
1.234 foxr 6293: sub sql_reply {
1.12 harris41 6294: my ($cmd)=@_;
1.234 foxr 6295: my $answer=&sub_sql_reply($cmd);
6296: if ($answer eq 'con_lost') { $answer=&sub_sql_reply($cmd); }
1.12 harris41 6297: return $answer;
6298: }
6299:
1.234 foxr 6300: sub sub_sql_reply {
1.12 harris41 6301: my ($cmd)=@_;
6302: my $unixsock="mysqlsock";
6303: my $peerfile="$perlvar{'lonSockDir'}/$unixsock";
6304: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
6305: Type => SOCK_STREAM,
6306: Timeout => 10)
6307: or return "con_lost";
1.319 www 6308: print $sclient "$cmd:$currentdomainid\n";
1.12 harris41 6309: my $answer=<$sclient>;
6310: chomp($answer);
6311: if (!$answer) { $answer="con_lost"; }
6312: return $answer;
6313: }
6314:
1.1 albertel 6315: # --------------------------------------- Is this the home server of an author?
1.11 www 6316:
1.1 albertel 6317: sub ishome {
6318: my $author=shift;
6319: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
6320: my ($udom,$uname)=split(/\//,$author);
6321: my $proname=propath($udom,$uname);
6322: if (-e $proname) {
6323: return 'owner';
6324: } else {
6325: return 'not_owner';
6326: }
6327: }
6328:
6329: # ======================================================= Continue main program
6330: # ---------------------------------------------------- Fork once and dissociate
6331:
1.134 albertel 6332: my $fpid=fork;
1.1 albertel 6333: exit if $fpid;
1.29 harris41 6334: die "Couldn't fork: $!" unless defined ($fpid);
1.1 albertel 6335:
1.29 harris41 6336: POSIX::setsid() or die "Can't start new session: $!";
1.1 albertel 6337:
6338: # ------------------------------------------------------- Write our PID on disk
6339:
1.134 albertel 6340: my $execdir=$perlvar{'lonDaemons'};
1.1 albertel 6341: open (PIDSAVE,">$execdir/logs/lond.pid");
6342: print PIDSAVE "$$\n";
6343: close(PIDSAVE);
1.190 albertel 6344: &logthis("<font color='red'>CRITICAL: ---------- Starting ----------</font>");
1.57 www 6345: &status('Starting');
1.1 albertel 6346:
1.106 foxr 6347:
1.1 albertel 6348:
6349: # ----------------------------------------------------- Install signal handlers
6350:
1.57 www 6351:
1.1 albertel 6352: $SIG{CHLD} = \&REAPER;
6353: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
6354: $SIG{HUP} = \&HUPSMAN;
1.57 www 6355: $SIG{USR1} = \&checkchildren;
1.144 foxr 6356: $SIG{USR2} = \&UpdateHosts;
1.106 foxr 6357:
1.148 foxr 6358: # Read the host hashes:
1.368 albertel 6359: &Apache::lonnet::load_hosts_tab();
1.447 raeburn 6360: my %iphost = &Apache::lonnet::get_iphost(1);
1.106 foxr 6361:
1.286 albertel 6362: my $dist=`$perlvar{'lonDaemons'}/distprobe`;
6363:
1.471 raeburn 6364: my $arch = `uname -i`;
6365: if ($arch eq 'unknown') {
6366: $arch = `uname -m`;
6367: }
6368:
1.106 foxr 6369: # --------------------------------------------------------------
6370: # Accept connections. When a connection comes in, it is validated
6371: # and if good, a child process is created to process transactions
6372: # along the connection.
6373:
1.1 albertel 6374: while (1) {
1.165 albertel 6375: &status('Starting accept');
1.106 foxr 6376: $client = $server->accept() or next;
1.165 albertel 6377: &status('Accepted '.$client.' off to spawn');
1.386 albertel 6378: make_new_child($client);
1.165 albertel 6379: &status('Finished spawning');
1.1 albertel 6380: }
6381:
1.212 foxr 6382: sub make_new_child {
6383: my $pid;
6384: # my $cipher; # Now global
6385: my $sigset;
1.178 foxr 6386:
1.212 foxr 6387: $client = shift;
6388: &status('Starting new child '.$client);
6389: &logthis('<font color="green"> Attempting to start child ('.$client.
6390: ")</font>");
6391: # block signal for fork
6392: $sigset = POSIX::SigSet->new(SIGINT);
6393: sigprocmask(SIG_BLOCK, $sigset)
6394: or die "Can't block SIGINT for fork: $!\n";
1.178 foxr 6395:
1.212 foxr 6396: die "fork: $!" unless defined ($pid = fork);
1.178 foxr 6397:
1.212 foxr 6398: $client->sockopt(SO_KEEPALIVE, 1); # Enable monitoring of
6399: # connection liveness.
1.178 foxr 6400:
1.212 foxr 6401: #
6402: # Figure out who we're talking to so we can record the peer in
6403: # the pid hash.
6404: #
6405: my $caller = getpeername($client);
6406: my ($port,$iaddr);
6407: if (defined($caller) && length($caller) > 0) {
6408: ($port,$iaddr)=unpack_sockaddr_in($caller);
6409: } else {
6410: &logthis("Unable to determine who caller was, getpeername returned nothing");
6411: }
6412: if (defined($iaddr)) {
6413: $clientip = inet_ntoa($iaddr);
6414: Debug("Connected with $clientip");
6415: } else {
6416: &logthis("Unable to determine clientip");
6417: $clientip='Unavailable';
6418: }
6419:
6420: if ($pid) {
6421: # Parent records the child's birth and returns.
6422: sigprocmask(SIG_UNBLOCK, $sigset)
6423: or die "Can't unblock SIGINT for fork: $!\n";
6424: $children{$pid} = $clientip;
6425: &status('Started child '.$pid);
1.462 foxr 6426: close($client);
1.212 foxr 6427: return;
6428: } else {
6429: # Child can *not* return from this subroutine.
6430: $SIG{INT} = 'DEFAULT'; # make SIGINT kill us as it did before
6431: $SIG{CHLD} = 'DEFAULT'; #make this default so that pwauth returns
6432: #don't get intercepted
6433: $SIG{USR1}= \&logstatus;
6434: $SIG{ALRM}= \&timeout;
1.468 foxr 6435: #
6436: # Block sigpipe as it gets thrownon socket disconnect and we want to
6437: # deal with that as a read faiure instead.
6438: #
6439: my $blockset = POSIX::SigSet->new(SIGPIPE);
6440: sigprocmask(SIG_BLOCK, $blockset);
6441:
1.212 foxr 6442: $lastlog='Forked ';
6443: $status='Forked';
1.178 foxr 6444:
1.212 foxr 6445: # unblock signals
6446: sigprocmask(SIG_UNBLOCK, $sigset)
6447: or die "Can't unblock SIGINT for fork: $!\n";
1.178 foxr 6448:
1.212 foxr 6449: # my $tmpsnum=0; # Now global
6450: #---------------------------------------------------- kerberos 5 initialization
6451: &Authen::Krb5::init_context();
1.359 raeburn 6452: unless (($dist eq 'fedora5') || ($dist eq 'fedora4') ||
6453: ($dist eq 'fedora6') || ($dist eq 'suse9.3')) {
1.286 albertel 6454: &Authen::Krb5::init_ets();
6455: }
1.209 albertel 6456:
1.212 foxr 6457: &status('Accepted connection');
6458: # =============================================================================
6459: # do something with the connection
6460: # -----------------------------------------------------------------------------
6461: # see if we know client and 'check' for spoof IP by ineffective challenge
1.178 foxr 6462:
1.278 albertel 6463: my $outsideip=$clientip;
6464: if ($clientip eq '127.0.0.1') {
1.368 albertel 6465: $outsideip=&Apache::lonnet::get_host_ip($perlvar{'lonHostID'});
1.278 albertel 6466: }
1.412 foxr 6467: &ReadManagerTable();
1.368 albertel 6468: my $clientrec=defined(&Apache::lonnet::get_hosts_from_ip($outsideip));
1.278 albertel 6469: my $ismanager=($managers{$outsideip} ne undef);
1.432 raeburn 6470: $clientname = "[unknown]";
1.212 foxr 6471: if($clientrec) { # Establish client type.
6472: $ConnectionType = "client";
1.368 albertel 6473: $clientname = (&Apache::lonnet::get_hosts_from_ip($outsideip))[-1];
1.212 foxr 6474: if($ismanager) {
6475: $ConnectionType = "both";
6476: }
6477: } else {
6478: $ConnectionType = "manager";
1.278 albertel 6479: $clientname = $managers{$outsideip};
1.212 foxr 6480: }
6481: my $clientok;
1.178 foxr 6482:
1.212 foxr 6483: if ($clientrec || $ismanager) {
6484: &status("Waiting for init from $clientip $clientname");
6485: &logthis('<font color="yellow">INFO: Connection, '.
6486: $clientip.
6487: " ($clientname) connection type = $ConnectionType </font>" );
6488: &status("Connecting $clientip ($clientname))");
6489: my $remotereq=<$client>;
6490: chomp($remotereq);
6491: Debug("Got init: $remotereq");
1.337 albertel 6492:
1.212 foxr 6493: if ($remotereq =~ /^init/) {
6494: &sethost("sethost:$perlvar{'lonHostID'}");
6495: #
6496: # If the remote is attempting a local init... give that a try:
6497: #
1.432 raeburn 6498: (my $i, my $inittype, $clientversion) = split(/:/, $remotereq);
1.209 albertel 6499:
1.212 foxr 6500: # If the connection type is ssl, but I didn't get my
6501: # certificate files yet, then I'll drop back to
6502: # insecure (if allowed).
6503:
6504: if($inittype eq "ssl") {
6505: my ($ca, $cert) = lonssl::CertificateFile;
6506: my $kfile = lonssl::KeyFile;
6507: if((!$ca) ||
6508: (!$cert) ||
6509: (!$kfile)) {
6510: $inittype = ""; # This forces insecure attempt.
6511: &logthis("<font color=\"blue\"> Certificates not "
6512: ."installed -- trying insecure auth</font>");
1.224 foxr 6513: } else { # SSL certificates are in place so
1.212 foxr 6514: } # Leave the inittype alone.
6515: }
6516:
6517: if($inittype eq "local") {
1.432 raeburn 6518: $clientversion = $perlvar{'lonVersion'};
1.212 foxr 6519: my $key = LocalConnection($client, $remotereq);
6520: if($key) {
6521: Debug("Got local key $key");
6522: $clientok = 1;
6523: my $cipherkey = pack("H32", $key);
6524: $cipher = new IDEA($cipherkey);
6525: print $client "ok:local\n";
1.442 www 6526: &logthis('<font color="green">'
1.212 foxr 6527: . "Successful local authentication </font>");
6528: $keymode = "local"
1.178 foxr 6529: } else {
1.212 foxr 6530: Debug("Failed to get local key");
6531: $clientok = 0;
6532: shutdown($client, 3);
6533: close $client;
1.178 foxr 6534: }
1.212 foxr 6535: } elsif ($inittype eq "ssl") {
6536: my $key = SSLConnection($client);
6537: if ($key) {
6538: $clientok = 1;
6539: my $cipherkey = pack("H32", $key);
6540: $cipher = new IDEA($cipherkey);
6541: &logthis('<font color="green">'
6542: ."Successfull ssl authentication with $clientname </font>");
6543: $keymode = "ssl";
6544:
1.178 foxr 6545: } else {
1.212 foxr 6546: $clientok = 0;
6547: close $client;
1.178 foxr 6548: }
1.212 foxr 6549:
6550: } else {
6551: my $ok = InsecureConnection($client);
6552: if($ok) {
6553: $clientok = 1;
6554: &logthis('<font color="green">'
6555: ."Successful insecure authentication with $clientname </font>");
6556: print $client "ok\n";
6557: $keymode = "insecure";
1.178 foxr 6558: } else {
1.212 foxr 6559: &logthis('<font color="yellow">'
6560: ."Attempted insecure connection disallowed </font>");
6561: close $client;
6562: $clientok = 0;
1.178 foxr 6563:
6564: }
6565: }
1.212 foxr 6566: } else {
6567: &logthis(
6568: "<font color='blue'>WARNING: "
6569: ."$clientip failed to initialize: >$remotereq< </font>");
6570: &status('No init '.$clientip);
6571: }
6572:
6573: } else {
6574: &logthis(
6575: "<font color='blue'>WARNING: Unknown client $clientip</font>");
6576: &status('Hung up on '.$clientip);
6577: }
6578:
6579: if ($clientok) {
6580: # ---------------- New known client connecting, could mean machine online again
1.368 albertel 6581: if (&Apache::lonnet::get_host_ip($currenthostid) ne $clientip
1.367 albertel 6582: && $clientip ne '127.0.0.1') {
1.375 albertel 6583: &Apache::lonnet::reconlonc($clientname);
1.212 foxr 6584: }
6585: &logthis("<font color='green'>Established connection: $clientname</font>");
6586: &status('Will listen to '.$clientname);
6587: # ------------------------------------------------------------ Process requests
6588: my $keep_going = 1;
6589: my $user_input;
1.448 raeburn 6590: my $clienthost = &Apache::lonnet::hostname($clientname);
6591: my $clientserverhomeID = &Apache::lonnet::get_server_homeID($clienthost);
6592: $clienthomedom = &Apache::lonnet::host_domain($clientserverhomeID);
1.212 foxr 6593: while(($user_input = get_request) && $keep_going) {
6594: alarm(120);
6595: Debug("Main: Got $user_input\n");
6596: $keep_going = &process_request($user_input);
1.178 foxr 6597: alarm(0);
1.212 foxr 6598: &status('Listening to '.$clientname." ($keymode)");
1.161 foxr 6599: }
1.212 foxr 6600:
1.59 www 6601: # --------------------------------------------- client unknown or fishy, refuse
1.212 foxr 6602: } else {
1.161 foxr 6603: print $client "refused\n";
6604: $client->close();
1.190 albertel 6605: &logthis("<font color='blue'>WARNING: "
1.161 foxr 6606: ."Rejected client $clientip, closing connection</font>");
6607: }
1.212 foxr 6608: }
1.161 foxr 6609:
1.1 albertel 6610: # =============================================================================
1.161 foxr 6611:
1.190 albertel 6612: &logthis("<font color='red'>CRITICAL: "
1.161 foxr 6613: ."Disconnect from $clientip ($clientname)</font>");
6614:
6615:
6616: # this exit is VERY important, otherwise the child will become
6617: # a producer of more and more children, forking yourself into
6618: # process death.
6619: exit;
1.106 foxr 6620:
1.78 foxr 6621: }
1.261 foxr 6622: #
6623: # Determine if a user is an author for the indicated domain.
6624: #
6625: # Parameters:
6626: # domain - domain to check in .
6627: # user - Name of user to check.
6628: #
6629: # Return:
6630: # 1 - User is an author for domain.
6631: # 0 - User is not an author for domain.
6632: sub is_author {
6633: my ($domain, $user) = @_;
6634:
6635: &Debug("is_author: $user @ $domain");
6636:
6637: my $hashref = &tie_user_hash($domain, $user, "roles",
6638: &GDBM_READER());
6639:
6640: # Author role should show up as a key /domain/_au
1.78 foxr 6641:
1.321 albertel 6642: my $key = "/$domain/_au";
6643: my $value;
6644: if (defined($hashref)) {
6645: $value = $hashref->{$key};
6646: }
1.78 foxr 6647:
1.261 foxr 6648: if(defined($value)) {
6649: &Debug("$user @ $domain is an author");
6650: }
6651:
6652: return defined($value);
6653: }
1.78 foxr 6654: #
6655: # Checks to see if the input roleput request was to set
6656: # an author role. If so, invokes the lchtmldir script to set
6657: # up a correct public_html
6658: # Parameters:
6659: # request - The request sent to the rolesput subchunk.
6660: # We're looking for /domain/_au
6661: # domain - The domain in which the user is having roles doctored.
6662: # user - Name of the user for which the role is being put.
6663: # authtype - The authentication type associated with the user.
6664: #
1.289 albertel 6665: sub manage_permissions {
1.192 foxr 6666: my ($request, $domain, $user, $authtype) = @_;
1.78 foxr 6667:
1.261 foxr 6668: &Debug("manage_permissions: $request $domain $user $authtype");
6669:
1.78 foxr 6670: # See if the request is of the form /$domain/_au
1.289 albertel 6671: if($request =~ /^(\/\Q$domain\E\/_au)$/) { # It's an author rolesput...
1.78 foxr 6672: my $execdir = $perlvar{'lonDaemons'};
6673: my $userhome= "/home/$user" ;
1.134 albertel 6674: &logthis("system $execdir/lchtmldir $userhome $user $authtype");
1.261 foxr 6675: &Debug("Setting homedir permissions for $userhome");
1.78 foxr 6676: system("$execdir/lchtmldir $userhome $user $authtype");
6677: }
6678: }
1.222 foxr 6679:
6680:
6681: #
6682: # Return the full path of a user password file, whether it exists or not.
6683: # Parameters:
6684: # domain - Domain in which the password file lives.
6685: # user - name of the user.
6686: # Returns:
6687: # Full passwd path:
6688: #
6689: sub password_path {
6690: my ($domain, $user) = @_;
1.264 albertel 6691: return &propath($domain, $user).'/passwd';
1.222 foxr 6692: }
6693:
6694: # Password Filename
6695: # Returns the path to a passwd file given domain and user... only if
6696: # it exists.
6697: # Parameters:
6698: # domain - Domain in which to search.
6699: # user - username.
6700: # Returns:
6701: # - If the password file exists returns its path.
6702: # - If the password file does not exist, returns undefined.
6703: #
6704: sub password_filename {
6705: my ($domain, $user) = @_;
6706:
6707: Debug ("PasswordFilename called: dom = $domain user = $user");
6708:
6709: my $path = &password_path($domain, $user);
6710: Debug("PasswordFilename got path: $path");
6711: if(-e $path) {
6712: return $path;
6713: } else {
6714: return undef;
6715: }
6716: }
6717:
6718: #
6719: # Rewrite the contents of the user's passwd file.
6720: # Parameters:
6721: # domain - domain of the user.
6722: # name - User's name.
6723: # contents - New contents of the file.
6724: # Returns:
6725: # 0 - Failed.
6726: # 1 - Success.
6727: #
6728: sub rewrite_password_file {
6729: my ($domain, $user, $contents) = @_;
6730:
6731: my $file = &password_filename($domain, $user);
6732: if (defined $file) {
6733: my $pf = IO::File->new(">$file");
6734: if($pf) {
6735: print $pf "$contents\n";
6736: return 1;
6737: } else {
6738: return 0;
6739: }
6740: } else {
6741: return 0;
6742: }
6743:
6744: }
6745:
1.78 foxr 6746: #
1.222 foxr 6747: # get_auth_type - Determines the authorization type of a user in a domain.
1.78 foxr 6748:
6749: # Returns the authorization type or nouser if there is no such user.
6750: #
1.436 raeburn 6751: sub get_auth_type {
1.192 foxr 6752: my ($domain, $user) = @_;
1.78 foxr 6753:
1.222 foxr 6754: Debug("get_auth_type( $domain, $user ) \n");
1.78 foxr 6755: my $proname = &propath($domain, $user);
6756: my $passwdfile = "$proname/passwd";
6757: if( -e $passwdfile ) {
6758: my $pf = IO::File->new($passwdfile);
6759: my $realpassword = <$pf>;
6760: chomp($realpassword);
1.79 foxr 6761: Debug("Password info = $realpassword\n");
1.78 foxr 6762: my ($authtype, $contentpwd) = split(/:/, $realpassword);
1.79 foxr 6763: Debug("Authtype = $authtype, content = $contentpwd\n");
1.259 raeburn 6764: return "$authtype:$contentpwd";
1.224 foxr 6765: } else {
1.79 foxr 6766: Debug("Returning nouser");
1.78 foxr 6767: return "nouser";
6768: }
1.1 albertel 6769: }
6770:
1.220 foxr 6771: #
6772: # Validate a user given their domain, name and password. This utility
6773: # function is used by both AuthenticateHandler and ChangePasswordHandler
6774: # to validate the login credentials of a user.
6775: # Parameters:
6776: # $domain - The domain being logged into (this is required due to
6777: # the capability for multihomed systems.
6778: # $user - The name of the user being validated.
6779: # $password - The user's propoposed password.
6780: #
6781: # Returns:
6782: # 1 - The domain,user,pasword triplet corresponds to a valid
6783: # user.
6784: # 0 - The domain,user,password triplet is not a valid user.
6785: #
6786: sub validate_user {
1.396 raeburn 6787: my ($domain, $user, $password, $checkdefauth) = @_;
1.220 foxr 6788:
6789: # Why negative ~pi you may well ask? Well this function is about
6790: # authentication, and therefore very important to get right.
6791: # I've initialized the flag that determines whether or not I've
6792: # validated correctly to a value it's not supposed to get.
6793: # At the end of this function. I'll ensure that it's not still that
6794: # value so we don't just wind up returning some accidental value
6795: # as a result of executing an unforseen code path that
1.249 foxr 6796: # did not set $validated. At the end of valid execution paths,
6797: # validated shoule be 1 for success or 0 for failuer.
1.220 foxr 6798:
6799: my $validated = -3.14159;
6800:
6801: # How we authenticate is determined by the type of authentication
6802: # the user has been assigned. If the authentication type is
6803: # "nouser", the user does not exist so we will return 0.
6804:
1.222 foxr 6805: my $contents = &get_auth_type($domain, $user);
1.220 foxr 6806: my ($howpwd, $contentpwd) = split(/:/, $contents);
6807:
6808: my $null = pack("C",0); # Used by kerberos auth types.
6809:
1.395 raeburn 6810: if ($howpwd eq 'nouser') {
1.396 raeburn 6811: if ($checkdefauth) {
6812: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
6813: if ($domdefaults{'auth_def'} eq 'localauth') {
6814: $howpwd = $domdefaults{'auth_def'};
6815: $contentpwd = $domdefaults{'auth_arg_def'};
6816: } elsif ((($domdefaults{'auth_def'} eq 'krb4') ||
6817: ($domdefaults{'auth_def'} eq 'krb5')) &&
6818: ($domdefaults{'auth_arg_def'} ne '')) {
6819: $howpwd = $domdefaults{'auth_def'};
6820: $contentpwd = $domdefaults{'auth_arg_def'};
6821: }
1.395 raeburn 6822: }
6823: }
1.220 foxr 6824: if ($howpwd ne 'nouser') {
6825: if($howpwd eq "internal") { # Encrypted is in local password file.
6826: $validated = (crypt($password, $contentpwd) eq $contentpwd);
6827: }
6828: elsif ($howpwd eq "unix") { # User is a normal unix user.
6829: $contentpwd = (getpwnam($user))[1];
6830: if($contentpwd) {
6831: if($contentpwd eq 'x') { # Shadow password file...
6832: my $pwauth_path = "/usr/local/sbin/pwauth";
6833: open PWAUTH, "|$pwauth_path" or
6834: die "Cannot invoke authentication";
6835: print PWAUTH "$user\n$password\n";
6836: close PWAUTH;
6837: $validated = ! $?;
6838:
6839: } else { # Passwords in /etc/passwd.
6840: $validated = (crypt($password,
6841: $contentpwd) eq $contentpwd);
6842: }
6843: } else {
6844: $validated = 0;
6845: }
1.439 raeburn 6846: } elsif ($howpwd eq "krb4") { # user is in kerberos 4 auth. domain.
6847: my $checkwithkrb5 = 0;
6848: if ($dist =~/^fedora(\d+)$/) {
6849: if ($1 > 11) {
6850: $checkwithkrb5 = 1;
6851: }
6852: } elsif ($dist =~ /^suse([\d.]+)$/) {
6853: if ($1 > 11.1) {
6854: $checkwithkrb5 = 1;
6855: }
6856: }
6857: if ($checkwithkrb5) {
6858: $validated = &krb5_authen($password,$null,$user,$contentpwd);
6859: } else {
6860: $validated = &krb4_authen($password,$null,$user,$contentpwd);
6861: }
1.224 foxr 6862: } elsif ($howpwd eq "krb5") { # User is in kerberos 5 auth. domain.
1.439 raeburn 6863: $validated = &krb5_authen($password,$null,$user,$contentpwd);
1.224 foxr 6864: } elsif ($howpwd eq "localauth") {
1.220 foxr 6865: # Authenticate via installation specific authentcation method:
6866: $validated = &localauth::localauth($user,
6867: $password,
1.353 albertel 6868: $contentpwd,
6869: $domain);
1.358 albertel 6870: if ($validated < 0) {
1.357 albertel 6871: &logthis("localauth for $contentpwd $user:$domain returned a $validated");
6872: $validated = 0;
6873: }
1.224 foxr 6874: } else { # Unrecognized auth is also bad.
1.220 foxr 6875: $validated = 0;
6876: }
6877: } else {
6878: $validated = 0;
6879: }
6880: #
6881: # $validated has the correct stat of the authentication:
6882: #
6883:
6884: unless ($validated != -3.14159) {
1.249 foxr 6885: # I >really really< want to know if this happens.
6886: # since it indicates that user authentication is badly
6887: # broken in some code path.
6888: #
6889: die "ValidateUser - failed to set the value of validated $domain, $user $password";
1.220 foxr 6890: }
6891: return $validated;
6892: }
6893:
1.439 raeburn 6894: sub krb4_authen {
6895: my ($password,$null,$user,$contentpwd) = @_;
6896: my $validated = 0;
6897: if (!($password =~ /$null/) ) { # Null password not allowed.
6898: eval {
6899: require Authen::Krb4;
6900: };
6901: if (!$@) {
6902: my $k4error = &Authen::Krb4::get_pw_in_tkt($user,
6903: "",
6904: $contentpwd,,
6905: 'krbtgt',
6906: $contentpwd,
6907: 1,
6908: $password);
6909: if(!$k4error) {
6910: $validated = 1;
6911: } else {
6912: $validated = 0;
6913: &logthis('krb4: '.$user.', '.$contentpwd.', '.
6914: &Authen::Krb4::get_err_txt($Authen::Krb4::error));
6915: }
6916: } else {
6917: $validated = krb5_authen($password,$null,$user,$contentpwd);
6918: }
6919: }
6920: return $validated;
6921: }
6922:
6923: sub krb5_authen {
6924: my ($password,$null,$user,$contentpwd) = @_;
6925: my $validated = 0;
6926: if(!($password =~ /$null/)) { # Null password not allowed.
6927: my $krbclient = &Authen::Krb5::parse_name($user.'@'
6928: .$contentpwd);
6929: my $krbservice = "krbtgt/".$contentpwd."\@".$contentpwd;
6930: my $krbserver = &Authen::Krb5::parse_name($krbservice);
6931: my $credentials= &Authen::Krb5::cc_default();
6932: $credentials->initialize(&Authen::Krb5::parse_name($user.'@'
6933: .$contentpwd));
6934: my $krbreturn;
6935: if (exists(&Authen::Krb5::get_init_creds_password)) {
6936: $krbreturn =
6937: &Authen::Krb5::get_init_creds_password($krbclient,$password,
6938: $krbservice);
6939: $validated = (ref($krbreturn) eq 'Authen::Krb5::Creds');
6940: } else {
6941: $krbreturn =
6942: &Authen::Krb5::get_in_tkt_with_password($krbclient,$krbserver,
6943: $password,$credentials);
6944: $validated = ($krbreturn == 1);
6945: }
6946: if (!$validated) {
6947: &logthis('krb5: '.$user.', '.$contentpwd.', '.
6948: &Authen::Krb5::error());
6949: }
6950: }
6951: return $validated;
6952: }
1.220 foxr 6953:
1.84 albertel 6954: sub addline {
6955: my ($fname,$hostid,$ip,$newline)=@_;
6956: my $contents;
6957: my $found=0;
1.355 albertel 6958: my $expr='^'.quotemeta($hostid).':'.quotemeta($ip).':';
1.134 albertel 6959: my $sh;
1.84 albertel 6960: if ($sh=IO::File->new("$fname.subscription")) {
6961: while (my $subline=<$sh>) {
6962: if ($subline !~ /$expr/) {$contents.= $subline;} else {$found=1;}
6963: }
6964: $sh->close();
6965: }
6966: $sh=IO::File->new(">$fname.subscription");
6967: if ($contents) { print $sh $contents; }
6968: if ($newline) { print $sh $newline; }
6969: $sh->close();
6970: return $found;
1.86 www 6971: }
6972:
1.234 foxr 6973: sub get_chat {
1.324 raeburn 6974: my ($cdom,$cname,$udom,$uname,$group)=@_;
1.310 albertel 6975:
1.87 www 6976: my @entries=();
1.324 raeburn 6977: my $namespace = 'nohist_chatroom';
6978: my $namespace_inroom = 'nohist_inchatroom';
1.335 albertel 6979: if ($group ne '') {
1.324 raeburn 6980: $namespace .= '_'.$group;
6981: $namespace_inroom .= '_'.$group;
6982: }
6983: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 6984: &GDBM_READER());
6985: if ($hashref) {
6986: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.311 albertel 6987: &untie_user_hash($hashref);
1.123 www 6988: }
1.124 www 6989: my @participants=();
1.134 albertel 6990: my $cutoff=time-60;
1.324 raeburn 6991: $hashref = &tie_user_hash($cdom, $cname, $namespace_inroom,
1.310 albertel 6992: &GDBM_WRCREAT());
6993: if ($hashref) {
6994: $hashref->{$uname.':'.$udom}=time;
6995: foreach my $user (sort(keys(%$hashref))) {
6996: if ($hashref->{$user}>$cutoff) {
6997: push(@participants, 'active_participant:'.$user);
1.123 www 6998: }
6999: }
1.311 albertel 7000: &untie_user_hash($hashref);
1.86 www 7001: }
1.124 www 7002: return (@participants,@entries);
1.86 www 7003: }
7004:
1.234 foxr 7005: sub chat_add {
1.324 raeburn 7006: my ($cdom,$cname,$newchat,$group)=@_;
1.88 albertel 7007: my @entries=();
1.142 www 7008: my $time=time;
1.324 raeburn 7009: my $namespace = 'nohist_chatroom';
7010: my $logfile = 'chatroom.log';
1.335 albertel 7011: if ($group ne '') {
1.324 raeburn 7012: $namespace .= '_'.$group;
7013: $logfile = 'chatroom_'.$group.'.log';
7014: }
7015: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 7016: &GDBM_WRCREAT());
7017: if ($hashref) {
7018: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.88 albertel 7019: my ($lastid)=($entries[$#entries]=~/^(\w+)\:/);
7020: my ($thentime,$idnum)=split(/\_/,$lastid);
7021: my $newid=$time.'_000000';
7022: if ($thentime==$time) {
7023: $idnum=~s/^0+//;
7024: $idnum++;
7025: $idnum=substr('000000'.$idnum,-6,6);
7026: $newid=$time.'_'.$idnum;
7027: }
1.310 albertel 7028: $hashref->{$newid}=$newchat;
1.88 albertel 7029: my $expired=$time-3600;
1.310 albertel 7030: foreach my $comment (keys(%$hashref)) {
7031: my ($thistime) = ($comment=~/(\d+)\_/);
1.88 albertel 7032: if ($thistime<$expired) {
1.310 albertel 7033: delete $hashref->{$comment};
1.88 albertel 7034: }
7035: }
1.310 albertel 7036: {
7037: my $proname=&propath($cdom,$cname);
1.324 raeburn 7038: if (open(CHATLOG,">>$proname/$logfile")) {
1.310 albertel 7039: print CHATLOG ("$time:".&unescape($newchat)."\n");
7040: }
7041: close(CHATLOG);
1.142 www 7042: }
1.311 albertel 7043: &untie_user_hash($hashref);
1.86 www 7044: }
1.84 albertel 7045: }
7046:
7047: sub unsub {
7048: my ($fname,$clientip)=@_;
7049: my $result;
1.188 foxr 7050: my $unsubs = 0; # Number of successful unsubscribes:
7051:
7052:
7053: # An old way subscriptions were handled was to have a
7054: # subscription marker file:
7055:
7056: Debug("Attempting unlink of $fname.$clientname");
1.161 foxr 7057: if (unlink("$fname.$clientname")) {
1.188 foxr 7058: $unsubs++; # Successful unsub via marker file.
7059: }
7060:
7061: # The more modern way to do it is to have a subscription list
7062: # file:
7063:
1.84 albertel 7064: if (-e "$fname.subscription") {
1.161 foxr 7065: my $found=&addline($fname,$clientname,$clientip,'');
1.188 foxr 7066: if ($found) {
7067: $unsubs++;
7068: }
7069: }
7070:
7071: # If either or both of these mechanisms succeeded in unsubscribing a
7072: # resource we can return ok:
7073:
7074: if($unsubs) {
7075: $result = "ok\n";
1.84 albertel 7076: } else {
1.188 foxr 7077: $result = "not_subscribed\n";
1.84 albertel 7078: }
1.188 foxr 7079:
1.84 albertel 7080: return $result;
7081: }
7082:
1.101 www 7083: sub currentversion {
7084: my $fname=shift;
7085: my $version=-1;
7086: my $ulsdir='';
7087: if ($fname=~/^(.+)\/[^\/]+$/) {
7088: $ulsdir=$1;
7089: }
1.114 albertel 7090: my ($fnamere1,$fnamere2);
7091: # remove version if already specified
1.101 www 7092: $fname=~s/\.\d+\.(\w+(?:\.meta)*)$/\.$1/;
1.114 albertel 7093: # get the bits that go before and after the version number
7094: if ( $fname=~/^(.*\.)(\w+(?:\.meta)*)$/ ) {
7095: $fnamere1=$1;
7096: $fnamere2='.'.$2;
7097: }
1.101 www 7098: if (-e $fname) { $version=1; }
7099: if (-e $ulsdir) {
1.134 albertel 7100: if(-d $ulsdir) {
7101: if (opendir(LSDIR,$ulsdir)) {
7102: my $ulsfn;
7103: while ($ulsfn=readdir(LSDIR)) {
1.101 www 7104: # see if this is a regular file (ignore links produced earlier)
1.134 albertel 7105: my $thisfile=$ulsdir.'/'.$ulsfn;
7106: unless (-l $thisfile) {
1.160 www 7107: if ($thisfile=~/\Q$fnamere1\E(\d+)\Q$fnamere2\E$/) {
1.134 albertel 7108: if ($1>$version) { $version=$1; }
7109: }
7110: }
7111: }
7112: closedir(LSDIR);
7113: $version++;
7114: }
7115: }
7116: }
7117: return $version;
1.101 www 7118: }
7119:
7120: sub thisversion {
7121: my $fname=shift;
7122: my $version=-1;
7123: if ($fname=~/\.(\d+)\.\w+(?:\.meta)*$/) {
7124: $version=$1;
7125: }
7126: return $version;
7127: }
7128:
1.84 albertel 7129: sub subscribe {
7130: my ($userinput,$clientip)=@_;
7131: my $result;
1.293 albertel 7132: my ($cmd,$fname)=split(/:/,$userinput,2);
1.84 albertel 7133: my $ownership=&ishome($fname);
7134: if ($ownership eq 'owner') {
1.101 www 7135: # explitly asking for the current version?
7136: unless (-e $fname) {
7137: my $currentversion=¤tversion($fname);
7138: if (&thisversion($fname)==$currentversion) {
7139: if ($fname=~/^(.+)\.\d+\.(\w+(?:\.meta)*)$/) {
7140: my $root=$1;
7141: my $extension=$2;
7142: symlink($root.'.'.$extension,
7143: $root.'.'.$currentversion.'.'.$extension);
1.102 www 7144: unless ($extension=~/\.meta$/) {
7145: symlink($root.'.'.$extension.'.meta',
7146: $root.'.'.$currentversion.'.'.$extension.'.meta');
7147: }
1.101 www 7148: }
7149: }
7150: }
1.84 albertel 7151: if (-e $fname) {
7152: if (-d $fname) {
7153: $result="directory\n";
7154: } else {
1.161 foxr 7155: if (-e "$fname.$clientname") {&unsub($fname,$clientip);}
1.134 albertel 7156: my $now=time;
1.161 foxr 7157: my $found=&addline($fname,$clientname,$clientip,
7158: "$clientname:$clientip:$now\n");
1.84 albertel 7159: if ($found) { $result="$fname\n"; }
7160: # if they were subscribed to only meta data, delete that
7161: # subscription, when you subscribe to a file you also get
7162: # the metadata
7163: unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); }
7164: $fname=~s/\/home\/httpd\/html\/res/raw/;
1.373 albertel 7165: $fname="http://".&Apache::lonnet::hostname($perlvar{'lonHostID'})."/".$fname;
1.84 albertel 7166: $result="$fname\n";
7167: }
7168: } else {
7169: $result="not_found\n";
7170: }
7171: } else {
7172: $result="rejected\n";
7173: }
7174: return $result;
7175: }
1.287 foxr 7176: # Change the passwd of a unix user. The caller must have
7177: # first verified that the user is a loncapa user.
7178: #
7179: # Parameters:
7180: # user - Unix user name to change.
7181: # pass - New password for the user.
7182: # Returns:
7183: # ok - if success
7184: # other - Some meaningfule error message string.
7185: # NOTE:
7186: # invokes a setuid script to change the passwd.
7187: sub change_unix_password {
7188: my ($user, $pass) = @_;
7189:
7190: &Debug("change_unix_password");
7191: my $execdir=$perlvar{'lonDaemons'};
7192: &Debug("Opening lcpasswd pipeline");
7193: my $pf = IO::File->new("|$execdir/lcpasswd > "
7194: ."$perlvar{'lonDaemons'}"
7195: ."/logs/lcpasswd.log");
7196: print $pf "$user\n$pass\n$pass\n";
7197: close $pf;
7198: my $err = $?;
7199: return ($err < @passwderrors) ? $passwderrors[$err] :
7200: "pwchange_falure - unknown error";
7201:
7202:
7203: }
7204:
1.91 albertel 7205:
7206: sub make_passwd_file {
1.98 foxr 7207: my ($uname, $umode,$npass,$passfilename)=@_;
1.390 raeburn 7208: my $result="ok";
1.91 albertel 7209: if ($umode eq 'krb4' or $umode eq 'krb5') {
7210: {
7211: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7212: if ($pf) {
7213: print $pf "$umode:$npass\n";
7214: } else {
7215: $result = "pass_file_failed_error";
7216: }
1.91 albertel 7217: }
7218: } elsif ($umode eq 'internal') {
7219: my $salt=time;
7220: $salt=substr($salt,6,2);
7221: my $ncpass=crypt($npass,$salt);
7222: {
7223: &Debug("Creating internal auth");
7224: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7225: if($pf) {
7226: print $pf "internal:$ncpass\n";
7227: } else {
7228: $result = "pass_file_failed_error";
7229: }
1.91 albertel 7230: }
7231: } elsif ($umode eq 'localauth') {
7232: {
7233: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7234: if($pf) {
7235: print $pf "localauth:$npass\n";
7236: } else {
7237: $result = "pass_file_failed_error";
7238: }
1.91 albertel 7239: }
7240: } elsif ($umode eq 'unix') {
7241: {
1.186 foxr 7242: #
7243: # Don't allow the creation of privileged accounts!!! that would
7244: # be real bad!!!
7245: #
7246: my $uid = getpwnam($uname);
7247: if((defined $uid) && ($uid == 0)) {
7248: &logthis(">>>Attempted to create privilged account blocked");
7249: return "no_priv_account_error\n";
7250: }
7251:
1.223 foxr 7252: my $execpath ="$perlvar{'lonDaemons'}/"."lcuseradd";
1.224 foxr 7253:
7254: my $lc_error_file = $execdir."/tmp/lcuseradd".$$.".status";
1.91 albertel 7255: {
7256: &Debug("Executing external: ".$execpath);
1.98 foxr 7257: &Debug("user = ".$uname.", Password =". $npass);
1.132 matthew 7258: my $se = IO::File->new("|$execpath > $perlvar{'lonDaemons'}/logs/lcuseradd.log");
1.91 albertel 7259: print $se "$uname\n";
7260: print $se "$npass\n";
7261: print $se "$npass\n";
1.223 foxr 7262: print $se "$lc_error_file\n"; # Status -> unique file.
1.97 foxr 7263: }
1.285 foxr 7264: if (-r $lc_error_file) {
7265: &Debug("Opening error file: $lc_error_file");
7266: my $error = IO::File->new("< $lc_error_file");
7267: my $useraddok = <$error>;
7268: $error->close;
7269: unlink($lc_error_file);
7270:
7271: chomp $useraddok;
7272:
7273: if($useraddok > 0) {
7274: my $error_text = &lcuseraddstrerror($useraddok);
7275: &logthis("Failed lcuseradd: $error_text");
1.390 raeburn 7276: $result = "lcuseradd_failed:$error_text";
1.285 foxr 7277: } else {
7278: my $pf = IO::File->new(">$passfilename");
7279: if($pf) {
7280: print $pf "unix:\n";
7281: } else {
7282: $result = "pass_file_failed_error";
7283: }
7284: }
1.224 foxr 7285: } else {
1.285 foxr 7286: &Debug("Could not locate lcuseradd error: $lc_error_file");
7287: $result="bug_lcuseradd_no_output_file";
1.91 albertel 7288: }
7289: }
7290: } elsif ($umode eq 'none') {
7291: {
1.223 foxr 7292: my $pf = IO::File->new("> $passfilename");
1.261 foxr 7293: if($pf) {
7294: print $pf "none:\n";
7295: } else {
7296: $result = "pass_file_failed_error";
7297: }
1.91 albertel 7298: }
7299: } else {
1.390 raeburn 7300: $result="auth_mode_error";
1.91 albertel 7301: }
7302: return $result;
1.121 albertel 7303: }
7304:
1.265 albertel 7305: sub convert_photo {
7306: my ($start,$dest)=@_;
7307: system("convert $start $dest");
7308: }
7309:
1.121 albertel 7310: sub sethost {
7311: my ($remotereq) = @_;
7312: my (undef,$hostid)=split(/:/,$remotereq);
1.322 albertel 7313: # ignore sethost if we are already correct
7314: if ($hostid eq $currenthostid) {
7315: return 'ok';
7316: }
7317:
1.121 albertel 7318: if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; }
1.368 albertel 7319: if (&Apache::lonnet::get_host_ip($perlvar{'lonHostID'})
7320: eq &Apache::lonnet::get_host_ip($hostid)) {
1.200 matthew 7321: $currenthostid =$hostid;
1.369 albertel 7322: $currentdomainid=&Apache::lonnet::host_domain($hostid);
1.443 www 7323: # &logthis("Setting hostid to $hostid, and domain to $currentdomainid");
1.121 albertel 7324: } else {
7325: &logthis("Requested host id $hostid not an alias of ".
7326: $perlvar{'lonHostID'}." refusing connection");
7327: return 'unable_to_set';
7328: }
7329: return 'ok';
7330: }
7331:
7332: sub version {
7333: my ($userinput)=@_;
7334: $remoteVERSION=(split(/:/,$userinput))[1];
7335: return "version:$VERSION";
1.127 albertel 7336: }
1.178 foxr 7337:
1.447 raeburn 7338: sub get_usersession_config {
7339: my ($dom,$name) = @_;
7340: my ($usersessionconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
7341: if (defined($cached)) {
7342: return $usersessionconf;
7343: } else {
7344: my %domconfig = &Apache::lonnet::get_dom('configuration',['usersessions'],$dom);
7345: if (ref($domconfig{'usersessions'}) eq 'HASH') {
7346: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'usersessions'},3600);
7347: return $domconfig{'usersessions'};
7348: }
7349: }
7350: return;
7351: }
1.200 matthew 7352:
1.453 raeburn 7353: sub releasereqd_check {
1.457 raeburn 7354: my ($cnum,$cdom,$key,$value,$major,$minor,$homecourses,$ids) = @_;
1.453 raeburn 7355: my $home = &Apache::lonnet::homeserver($cnum,$cdom);
7356: return if ($home eq 'no_host');
7357: my ($reqdmajor,$reqdminor,$displayrole);
7358: if ($cnum =~ /$LONCAPA::match_community/) {
7359: if ($major eq '' && $minor eq '') {
7360: return unless ((ref($ids) eq 'ARRAY') &&
7361: (grep(/^\Q$home\E$/,@{$ids})));
7362: } else {
7363: $reqdmajor = 2;
7364: $reqdminor = 9;
7365: return unless (&useable_role($reqdmajor,$reqdminor,$major,$minor));
7366: }
7367: }
1.457 raeburn 7368: my $hashid = $cdom.':'.$cnum;
7369: my ($courseinfo,$cached) =
7370: &Apache::lonnet::is_cached_new('courseinfo',$hashid);
7371: if (defined($cached)) {
7372: if (ref($courseinfo) eq 'HASH') {
7373: if (exists($courseinfo->{'releaserequired'})) {
7374: my ($reqdmajor,$reqdminor) = split(/\./,$courseinfo->{'releaserequired'});
7375: return unless (&useable_role($reqdmajor,$reqdminor,$major,$minor));
1.453 raeburn 7376: }
1.457 raeburn 7377: }
7378: } else {
7379: if (ref($ids) eq 'ARRAY') {
7380: if (grep(/^\Q$home\E$/,@{$ids})) {
7381: if (ref($homecourses) eq 'HASH') {
7382: if (ref($homecourses->{$hashid}) eq 'ARRAY') {
7383: push(@{$homecourses->{$hashid}},{$key=>$value});
7384: } else {
7385: $homecourses->{$hashid} = [{$key=>$value}];
1.453 raeburn 7386: }
7387: }
1.457 raeburn 7388: return;
1.453 raeburn 7389: }
1.457 raeburn 7390: }
7391: my $courseinfo = &get_courseinfo_hash($cnum,$cdom,$home);
7392: if (ref($courseinfo) eq 'HASH') {
7393: if (exists($courseinfo->{'releaserequired'})) {
7394: my ($reqdmajor,$reqdminor) = split(/\./,$courseinfo->{'releaserequired'});
7395: return unless (&useable_role($reqdmajor,$reqdminor,$major,$minor));
1.453 raeburn 7396: }
1.466 raeburn 7397: } else {
7398: return;
1.453 raeburn 7399: }
7400: }
7401: return 1;
7402: }
7403:
1.450 raeburn 7404: sub get_courseinfo_hash {
7405: my ($cnum,$cdom,$home) = @_;
1.466 raeburn 7406: my %info;
7407: eval {
7408: local($SIG{ALRM}) = sub { die "timeout\n"; };
7409: local($SIG{__DIE__})='DEFAULT';
7410: alarm(3);
7411: %info = &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,1,[$home],'.');
7412: alarm(0);
7413: };
7414: if ($@) {
7415: if ($@ eq "timeout\n") {
7416: &logthis("<font color='blue'>WARNING courseiddump for $cnum:$cdom from $home timedout</font>");
7417: } else {
7418: &logthis("<font color='yellow'>WARNING unexpected error during eval of call for courseiddump from $home</font>");
7419: }
7420: } else {
7421: if (ref($info{$cdom.'_'.$cnum}) eq 'HASH') {
7422: my $hashid = $cdom.':'.$cnum;
7423: return &Apache::lonnet::do_cache_new('courseinfo',$hashid,$info{$cdom.'_'.$cnum},600);
7424: }
1.453 raeburn 7425: }
7426: return;
7427: }
7428:
7429: sub check_homecourses {
7430: my ($homecourses,$udom,$regexp,$count,$range,$start,$end,$major,$minor) = @_;
7431: my ($result,%addtocache);
1.459 raeburn 7432: my $yesterday = time - 24*3600;
1.453 raeburn 7433: if (ref($homecourses) eq 'HASH') {
1.459 raeburn 7434: my (%okcourses,%courseinfo,%recent);
1.453 raeburn 7435: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
7436: if ($hashref) {
7437: while (my ($key,$value) = each(%$hashref)) {
7438: my $unesc_key = &unescape($key);
1.459 raeburn 7439: if ($unesc_key =~ /^lasttime:(\w+)$/) {
7440: my $cid = $1;
7441: $cid =~ s/_/:/;
7442: if ($value > $yesterday ) {
7443: $recent{$cid} = 1;
7444: }
7445: next;
7446: }
1.453 raeburn 7447: my $items = &Apache::lonnet::thaw_unescape($value);
7448: if (ref($items) eq 'HASH') {
7449: my $hashid = $unesc_key;
7450: $hashid =~ s/_/:/;
1.459 raeburn 7451: $courseinfo{$hashid} = $items;
1.453 raeburn 7452: if (ref($homecourses->{$hashid}) eq 'ARRAY') {
7453: my ($reqdmajor,$reqdminor) = split(/\./,$items->{'releaserequired'});
7454: if (&useable_role($reqdmajor,$reqdminor,$major,$minor)) {
7455: $okcourses{$hashid} = 1;
7456: }
7457: }
7458: }
7459: }
7460: unless (&untie_domain_hash($hashref)) {
7461: &logthis('Failed to untie tied hash for nohist_courseids.db');
7462: }
7463: } else {
7464: &logthis('Failed to tie hash for nohist_courseids.db');
7465: return;
7466: }
1.459 raeburn 7467: foreach my $hashid (keys(%recent)) {
1.465 raeburn 7468: my ($result,$cached)=&Apache::lonnet::is_cached_new('courseinfo',$hashid);
1.464 raeburn 7469: unless ($cached) {
7470: &Apache::lonnet::do_cache_new('courseinfo',$hashid,$courseinfo{$hashid},600);
7471: }
1.459 raeburn 7472: }
7473: foreach my $hashid (keys(%{$homecourses})) {
7474: next if ($recent{$hashid});
7475: &Apache::lonnet::do_cache_new('courseinfo',$hashid,$courseinfo{$hashid},600);
7476: }
1.453 raeburn 7477: foreach my $hashid (keys(%okcourses)) {
7478: if (ref($homecourses->{$hashid}) eq 'ARRAY') {
7479: foreach my $role (@{$homecourses->{$hashid}}) {
7480: if (ref($role) eq 'HASH') {
7481: while (my ($key,$value) = each(%{$role})) {
7482: if ($regexp eq '.') {
7483: $count++;
7484: if (defined($range) && $count >= $end) { last; }
7485: if (defined($range) && $count < $start) { next; }
7486: $result.=$key.'='.$value.'&';
7487: } else {
7488: my $unescapeKey = &unescape($key);
7489: if (eval('$unescapeKey=~/$regexp/')) {
7490: $count++;
7491: if (defined($range) && $count >= $end) { last; }
7492: if (defined($range) && $count < $start) { next; }
7493: $result.="$key=$value&";
7494: }
7495: }
7496: }
7497: }
7498: }
7499: }
1.450 raeburn 7500: }
7501: }
1.453 raeburn 7502: return $result;
7503: }
7504:
7505: sub useable_role {
7506: my ($reqdmajor,$reqdminor,$major,$minor) = @_;
7507: if ($reqdmajor ne '' && $reqdminor ne '') {
7508: return if (($major eq '' && $minor eq '') ||
7509: ($major < $reqdmajor) ||
7510: (($major == $reqdmajor) && ($minor < $reqdminor)));
7511: }
7512: return 1;
1.450 raeburn 7513: }
7514:
1.471 raeburn 7515: sub distro_and_arch {
7516: return $dist.':'.$arch;
7517: }
7518:
1.61 harris41 7519: # ----------------------------------- POD (plain old documentation, CPAN style)
7520:
7521: =head1 NAME
7522:
7523: lond - "LON Daemon" Server (port "LOND" 5663)
7524:
7525: =head1 SYNOPSIS
7526:
1.74 harris41 7527: Usage: B<lond>
7528:
7529: Should only be run as user=www. This is a command-line script which
7530: is invoked by B<loncron>. There is no expectation that a typical user
7531: will manually start B<lond> from the command-line. (In other words,
7532: DO NOT START B<lond> YOURSELF.)
1.61 harris41 7533:
7534: =head1 DESCRIPTION
7535:
1.74 harris41 7536: There are two characteristics associated with the running of B<lond>,
7537: PROCESS MANAGEMENT (starting, stopping, handling child processes)
7538: and SERVER-SIDE ACTIVITIES (password authentication, user creation,
7539: subscriptions, etc). These are described in two large
7540: sections below.
7541:
7542: B<PROCESS MANAGEMENT>
7543:
1.61 harris41 7544: Preforker - server who forks first. Runs as a daemon. HUPs.
7545: Uses IDEA encryption
7546:
1.74 harris41 7547: B<lond> forks off children processes that correspond to the other servers
7548: in the network. Management of these processes can be done at the
7549: parent process level or the child process level.
7550:
7551: B<logs/lond.log> is the location of log messages.
7552:
7553: The process management is now explained in terms of linux shell commands,
7554: subroutines internal to this code, and signal assignments:
7555:
7556: =over 4
7557:
7558: =item *
7559:
7560: PID is stored in B<logs/lond.pid>
7561:
7562: This is the process id number of the parent B<lond> process.
7563:
7564: =item *
7565:
7566: SIGTERM and SIGINT
7567:
7568: Parent signal assignment:
7569: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
7570:
7571: Child signal assignment:
7572: $SIG{INT} = 'DEFAULT'; (and SIGTERM is DEFAULT also)
7573: (The child dies and a SIGALRM is sent to parent, awaking parent from slumber
7574: to restart a new child.)
7575:
7576: Command-line invocations:
7577: B<kill> B<-s> SIGTERM I<PID>
7578: B<kill> B<-s> SIGINT I<PID>
7579:
7580: Subroutine B<HUNTSMAN>:
7581: This is only invoked for the B<lond> parent I<PID>.
7582: This kills all the children, and then the parent.
7583: The B<lonc.pid> file is cleared.
7584:
7585: =item *
7586:
7587: SIGHUP
7588:
7589: Current bug:
7590: This signal can only be processed the first time
7591: on the parent process. Subsequent SIGHUP signals
7592: have no effect.
7593:
7594: Parent signal assignment:
7595: $SIG{HUP} = \&HUPSMAN;
7596:
7597: Child signal assignment:
7598: none (nothing happens)
7599:
7600: Command-line invocations:
7601: B<kill> B<-s> SIGHUP I<PID>
7602:
7603: Subroutine B<HUPSMAN>:
7604: This is only invoked for the B<lond> parent I<PID>,
7605: This kills all the children, and then the parent.
7606: The B<lond.pid> file is cleared.
7607:
7608: =item *
7609:
7610: SIGUSR1
7611:
7612: Parent signal assignment:
7613: $SIG{USR1} = \&USRMAN;
7614:
7615: Child signal assignment:
7616: $SIG{USR1}= \&logstatus;
7617:
7618: Command-line invocations:
7619: B<kill> B<-s> SIGUSR1 I<PID>
7620:
7621: Subroutine B<USRMAN>:
7622: When invoked for the B<lond> parent I<PID>,
7623: SIGUSR1 is sent to all the children, and the status of
7624: each connection is logged.
1.144 foxr 7625:
7626: =item *
7627:
7628: SIGUSR2
7629:
7630: Parent Signal assignment:
7631: $SIG{USR2} = \&UpdateHosts
7632:
7633: Child signal assignment:
7634: NONE
7635:
1.74 harris41 7636:
7637: =item *
7638:
7639: SIGCHLD
7640:
7641: Parent signal assignment:
7642: $SIG{CHLD} = \&REAPER;
7643:
7644: Child signal assignment:
7645: none
7646:
7647: Command-line invocations:
7648: B<kill> B<-s> SIGCHLD I<PID>
7649:
7650: Subroutine B<REAPER>:
7651: This is only invoked for the B<lond> parent I<PID>.
7652: Information pertaining to the child is removed.
7653: The socket port is cleaned up.
7654:
7655: =back
7656:
7657: B<SERVER-SIDE ACTIVITIES>
7658:
7659: Server-side information can be accepted in an encrypted or non-encrypted
7660: method.
7661:
7662: =over 4
7663:
7664: =item ping
7665:
7666: Query a client in the hosts.tab table; "Are you there?"
7667:
7668: =item pong
7669:
7670: Respond to a ping query.
7671:
7672: =item ekey
7673:
7674: Read in encrypted key, make cipher. Respond with a buildkey.
7675:
7676: =item load
7677:
7678: Respond with CPU load based on a computation upon /proc/loadavg.
7679:
7680: =item currentauth
7681:
7682: Reply with current authentication information (only over an
7683: encrypted channel).
7684:
7685: =item auth
7686:
7687: Only over an encrypted channel, reply as to whether a user's
7688: authentication information can be validated.
7689:
7690: =item passwd
7691:
7692: Allow for a password to be set.
7693:
7694: =item makeuser
7695:
7696: Make a user.
7697:
7698: =item passwd
7699:
7700: Allow for authentication mechanism and password to be changed.
7701:
7702: =item home
1.61 harris41 7703:
1.74 harris41 7704: Respond to a question "are you the home for a given user?"
7705:
7706: =item update
7707:
7708: Update contents of a subscribed resource.
7709:
7710: =item unsubscribe
7711:
7712: The server is unsubscribing from a resource.
7713:
7714: =item subscribe
7715:
7716: The server is subscribing to a resource.
7717:
7718: =item log
7719:
7720: Place in B<logs/lond.log>
7721:
7722: =item put
7723:
7724: stores hash in namespace
7725:
1.230 foxr 7726: =item rolesputy
1.74 harris41 7727:
7728: put a role into a user's environment
7729:
7730: =item get
7731:
7732: returns hash with keys from array
7733: reference filled in from namespace
7734:
7735: =item eget
7736:
7737: returns hash with keys from array
7738: reference filled in from namesp (encrypts the return communication)
7739:
7740: =item rolesget
7741:
7742: get a role from a user's environment
7743:
7744: =item del
7745:
7746: deletes keys out of array from namespace
7747:
7748: =item keys
7749:
7750: returns namespace keys
7751:
7752: =item dump
7753:
7754: dumps the complete (or key matching regexp) namespace into a hash
7755:
7756: =item store
7757:
7758: stores hash permanently
7759: for this url; hashref needs to be given and should be a \%hashname; the
7760: remaining args aren't required and if they aren't passed or are '' they will
7761: be derived from the ENV
7762:
7763: =item restore
7764:
7765: returns a hash for a given url
7766:
7767: =item querysend
7768:
7769: Tells client about the lonsql process that has been launched in response
7770: to a sent query.
7771:
7772: =item queryreply
7773:
7774: Accept information from lonsql and make appropriate storage in temporary
7775: file space.
7776:
7777: =item idput
7778:
7779: Defines usernames as corresponding to IDs. (These "IDs" are unique identifiers
7780: for each student, defined perhaps by the institutional Registrar.)
7781:
7782: =item idget
7783:
7784: Returns usernames corresponding to IDs. (These "IDs" are unique identifiers
7785: for each student, defined perhaps by the institutional Registrar.)
7786:
7787: =item tmpput
7788:
7789: Accept and store information in temporary space.
7790:
7791: =item tmpget
7792:
7793: Send along temporarily stored information.
7794:
7795: =item ls
7796:
7797: List part of a user's directory.
7798:
1.135 foxr 7799: =item pushtable
7800:
7801: Pushes a file in /home/httpd/lonTab directory. Currently limited to:
7802: hosts.tab and domain.tab. The old file is copied to *.tab.backup but
7803: must be restored manually in case of a problem with the new table file.
7804: pushtable requires that the request be encrypted and validated via
7805: ValidateManager. The form of the command is:
7806: enc:pushtable tablename <tablecontents> \n
7807: where pushtable, tablename and <tablecontents> will be encrypted, but \n is a
7808: cleartext newline.
7809:
1.74 harris41 7810: =item Hanging up (exit or init)
7811:
7812: What to do when a client tells the server that they (the client)
7813: are leaving the network.
7814:
7815: =item unknown command
7816:
7817: If B<lond> is sent an unknown command (not in the list above),
7818: it replys to the client "unknown_cmd".
1.135 foxr 7819:
1.74 harris41 7820:
7821: =item UNKNOWN CLIENT
7822:
7823: If the anti-spoofing algorithm cannot verify the client,
7824: the client is rejected (with a "refused" message sent
7825: to the client, and the connection is closed.
7826:
7827: =back
1.61 harris41 7828:
7829: =head1 PREREQUISITES
7830:
7831: IO::Socket
7832: IO::File
7833: Apache::File
7834: POSIX
7835: Crypt::IDEA
7836: LWP::UserAgent()
7837: GDBM_File
7838: Authen::Krb4
1.91 albertel 7839: Authen::Krb5
1.61 harris41 7840:
7841: =head1 COREQUISITES
7842:
7843: =head1 OSNAMES
7844:
7845: linux
7846:
7847: =head1 SCRIPT CATEGORIES
7848:
7849: Server/Process
7850:
7851: =cut
1.409 foxr 7852:
7853:
7854: =pod
7855:
7856: =head1 LOG MESSAGES
7857:
7858: The messages below can be emitted in the lond log. This log is located
7859: in ~httpd/perl/logs/lond.log Many log messages have HTML encapsulation
7860: to provide coloring if examined from inside a web page. Some do not.
7861: Where color is used, the colors are; Red for sometihhng to get excited
7862: about and to follow up on. Yellow for something to keep an eye on to
7863: be sure it does not get worse, Green,and Blue for informational items.
7864:
7865: In the discussions below, sometimes reference is made to ~httpd
7866: when describing file locations. There isn't really an httpd
7867: user, however there is an httpd directory that gets installed in the
7868: place that user home directories go. On linux, this is usually
7869: (always?) /home/httpd.
7870:
7871:
7872: Some messages are colorless. These are usually (not always)
7873: Green/Blue color level messages.
7874:
7875: =over 2
7876:
7877: =item (Red) LocalConnection rejecting non local: <ip> ne 127.0.0.1
7878:
7879: A local connection negotiation was attempted by
7880: a host whose IP address was not 127.0.0.1.
7881: The socket is closed and the child will exit.
7882: lond has three ways to establish an encyrption
7883: key with a client:
7884:
7885: =over 2
7886:
7887: =item local
7888:
7889: The key is written and read from a file.
7890: This is only valid for connections from localhost.
7891:
7892: =item insecure
7893:
7894: The key is generated by the server and
7895: transmitted to the client.
7896:
7897: =item ssl (secure)
7898:
7899: An ssl connection is negotiated with the client,
7900: the key is generated by the server and sent to the
7901: client across this ssl connection before the
7902: ssl connectionis terminated and clear text
7903: transmission resumes.
7904:
7905: =back
7906:
7907: =item (Red) LocalConnection: caller is insane! init = <init> and type = <type>
7908:
7909: The client is local but has not sent an initialization
7910: string that is the literal "init:local" The connection
7911: is closed and the child exits.
7912:
7913: =item Red CRITICAL Can't get key file <error>
7914:
7915: SSL key negotiation is being attempted but the call to
7916: lonssl::KeyFile failed. This usually means that the
7917: configuration file is not correctly defining or protecting
7918: the directories/files lonCertificateDirectory or
7919: lonnetPrivateKey
7920: <error> is a string that describes the reason that
7921: the key file could not be located.
7922:
7923: =item (Red) CRITICAL Can't get certificates <error>
7924:
7925: SSL key negotiation failed because we were not able to retrives our certificate
7926: or the CA's certificate in the call to lonssl::CertificateFile
7927: <error> is the textual reason this failed. Usual reasons:
7928:
7929: =over 2
7930:
7931: =item Apache config file for loncapa incorrect:
7932:
7933: one of the variables
7934: lonCertificateDirectory, lonnetCertificateAuthority, or lonnetCertificate
7935: undefined or incorrect
7936:
7937: =item Permission error:
7938:
7939: The directory pointed to by lonCertificateDirectory is not readable by lond
7940:
7941: =item Permission error:
7942:
7943: Files in the directory pointed to by lonCertificateDirectory are not readable by lond.
7944:
7945: =item Installation error:
7946:
7947: Either the certificate authority file or the certificate have not
7948: been installed in lonCertificateDirectory.
7949:
7950: =item (Red) CRITICAL SSL Socket promotion failed: <err>
7951:
7952: The promotion of the connection from plaintext to SSL failed
7953: <err> is the reason for the failure. There are two
7954: system calls involved in the promotion (one of which failed),
7955: a dup to produce
7956: a second fd on the raw socket over which the encrypted data
7957: will flow and IO::SOcket::SSL->new_from_fd which creates
7958: the SSL connection on the duped fd.
7959:
7960: =item (Blue) WARNING client did not respond to challenge
7961:
7962: This occurs on an insecure (non SSL) connection negotiation request.
7963: lond generates some number from the time, the PID and sends it to
7964: the client. The client must respond by echoing this information back.
7965: If the client does not do so, that's a violation of the challenge
7966: protocols and the connection will be failed.
7967:
7968: =item (Red) No manager table. Nobody can manage!!
7969:
7970: lond has the concept of privileged hosts that
7971: can perform remote management function such
7972: as update the hosts.tab. The manager hosts
7973: are described in the
7974: ~httpd/lonTabs/managers.tab file.
7975: this message is logged if this file is missing.
7976:
7977:
7978: =item (Green) Registering manager <dnsname> as <cluster_name> with <ipaddress>
7979:
7980: Reports the successful parse and registration
7981: of a specific manager.
7982:
7983: =item Green existing host <clustername:dnsname>
7984:
7985: The manager host is already defined in the hosts.tab
7986: the information in that table, rather than the info in the
7987: manager table will be used to determine the manager's ip.
7988:
7989: =item (Red) Unable to craete <filename>
7990:
7991: lond has been asked to create new versions of an administrative
7992: file (by a manager). When this is done, the new file is created
7993: in a temp file and then renamed into place so that there are always
7994: usable administrative files, even if the update fails. This failure
7995: message means that the temp file could not be created.
7996: The update is abandoned, and the old file is available for use.
7997:
7998: =item (Green) CopyFile from <oldname> to <newname> failed
7999:
8000: In an update of administrative files, the copy of the existing file to a
8001: backup file failed. The installation of the new file may still succeed,
8002: but there will not be a back up file to rever to (this should probably
8003: be yellow).
8004:
8005: =item (Green) Pushfile: backed up <oldname> to <newname>
8006:
8007: See above, the backup of the old administrative file succeeded.
8008:
8009: =item (Red) Pushfile: Unable to install <filename> <reason>
8010:
8011: The new administrative file could not be installed. In this case,
8012: the old administrative file is still in use.
8013:
8014: =item (Green) Installed new < filename>.
8015:
8016: The new administrative file was successfullly installed.
8017:
8018: =item (Red) Reinitializing lond pid=<pid>
8019:
8020: The lonc child process <pid> will be sent a USR2
8021: signal.
8022:
8023: =item (Red) Reinitializing self
8024:
8025: We've been asked to re-read our administrative files,and
8026: are doing so.
8027:
8028: =item (Yellow) error:Invalid process identifier <ident>
8029:
8030: A reinit command was received, but the target part of the
8031: command was not valid. It must be either
8032: 'lond' or 'lonc' but was <ident>
8033:
8034: =item (Green) isValideditCommand checking: Command = <command> Key = <key> newline = <newline>
8035:
8036: Checking to see if lond has been handed a valid edit
8037: command. It is possible the edit command is not valid
8038: in that case there are no log messages to indicate that.
8039:
8040: =item Result of password change for <username> pwchange_success
8041:
8042: The password for <username> was
8043: successfully changed.
8044:
8045: =item Unable to open <user> passwd to change password
8046:
8047: Could not rewrite the
8048: internal password file for a user
8049:
8050: =item Result of password change for <user> : <result>
8051:
8052: A unix password change for <user> was attempted
8053: and the pipe returned <result>
8054:
8055: =item LWP GET: <message> for <fname> (<remoteurl>)
8056:
8057: The lightweight process fetch for a resource failed
8058: with <message> the local filename that should
8059: have existed/been created was <fname> the
8060: corresponding URI: <remoteurl> This is emitted in several
8061: places.
8062:
8063: =item Unable to move <transname> to <destname>
8064:
8065: From fetch_user_file_handler - the user file was replicated but could not
8066: be mv'd to its final location.
8067:
8068: =item Looking for <domain> <username>
8069:
8070: From user_has_session_handler - This should be a Debug call instead
8071: it indicates lond is about to check whether the specified user has a
8072: session active on the specified domain on the local host.
8073:
8074: =item Client <ip> (<name>) hanging up: <input>
8075:
8076: lond has been asked to exit by its client. The <ip> and <name> identify the
8077: client systemand <input> is the full exit command sent to the server.
8078:
8079: =item Red CRITICAL: ABNORMAL EXIT. child <pid> for server <hostname> died through a crass with this error->[<message>].
8080:
8081: A lond child terminated. NOte that this termination can also occur when the
8082: child receives the QUIT or DIE signals. <pid> is the process id of the child,
8083: <hostname> the host lond is working for, and <message> the reason the child died
8084: to the best of our ability to get it (I would guess that any numeric value
8085: represents and errno value). This is immediately followed by
8086:
8087: =item Famous last words: Catching exception - <log>
8088:
8089: Where log is some recent information about the state of the child.
8090:
8091: =item Red CRITICAL: TIME OUT <pid>
8092:
8093: Some timeout occured for server <pid>. THis is normally a timeout on an LWP
8094: doing an HTTP::GET.
8095:
8096: =item child <pid> died
8097:
8098: The reaper caught a SIGCHILD for the lond child process <pid>
8099: This should be modified to also display the IP of the dying child
8100: $children{$pid}
8101:
8102: =item Unknown child 0 died
8103: A child died but the wait for it returned a pid of zero which really should not
8104: ever happen.
8105:
8106: =item Child <which> - <pid> looks like we missed it's death
8107:
8108: When a sigchild is received, the reaper process checks all children to see if they are
8109: alive. If children are dying quite quickly, the lack of signal queuing can mean
8110: that a signal hearalds the death of more than one child. If so this message indicates
8111: which other one died. <which> is the ip of a dead child
8112:
8113: =item Free socket: <shutdownretval>
8114:
8115: The HUNTSMAN sub was called due to a SIGINT in a child process. The socket is being shutdown.
8116: for whatever reason, <shutdownretval> is printed but in fact shutdown() is not documented
8117: to return anything. This is followed by:
8118:
8119: =item Red CRITICAL: Shutting down
8120:
8121: Just prior to exit.
8122:
8123: =item Free socket: <shutdownretval>
8124:
8125: The HUPSMAN sub was called due to a SIGHUP. all children get killsed, and lond execs itself.
8126: This is followed by:
8127:
8128: =item (Red) CRITICAL: Restarting
8129:
8130: lond is about to exec itself to restart.
8131:
8132: =item (Blue) Updating connections
8133:
8134: (In response to a USR2). All the children (except the one for localhost)
8135: are about to be killed, the hosts tab reread, and Apache reloaded via apachereload.
8136:
8137: =item (Blue) UpdateHosts killing child <pid> for ip <ip>
8138:
8139: Due to USR2 as above.
8140:
8141: =item (Green) keeping child for ip <ip> (pid = <pid>)
8142:
8143: In response to USR2 as above, the child indicated is not being restarted because
8144: it's assumed that we'll always need a child for the localhost.
8145:
8146:
8147: =item Going to check on the children
8148:
8149: Parent is about to check on the health of the child processes.
8150: Note that this is in response to a USR1 sent to the parent lond.
8151: there may be one or more of the next two messages:
8152:
8153: =item <pid> is dead
8154:
8155: A child that we have in our child hash as alive has evidently died.
8156:
8157: =item Child <pid> did not respond
8158:
8159: In the health check the child <pid> did not update/produce a pid_.txt
8160: file when sent it's USR1 signal. That process is killed with a 9 signal, as it's
8161: assumed to be hung in some un-fixable way.
8162:
8163: =item Finished checking children
8164:
8165: Master processs's USR1 processing is cojmplete.
8166:
8167: =item (Red) CRITICAL: ------- Starting ------
8168:
8169: (There are more '-'s on either side). Lond has forked itself off to
8170: form a new session and is about to start actual initialization.
8171:
8172: =item (Green) Attempting to start child (<client>)
8173:
8174: Started a new child process for <client>. Client is IO::Socket object
8175: connected to the child. This was as a result of a TCP/IP connection from a client.
8176:
8177: =item Unable to determine who caller was, getpeername returned nothing
8178:
8179: In child process initialization. either getpeername returned undef or
8180: a zero sized object was returned. Processing continues, but in my opinion,
8181: this should be cause for the child to exit.
8182:
8183: =item Unable to determine clientip
8184:
8185: In child process initialization. The peer address from getpeername was not defined.
8186: The client address is stored as "Unavailable" and processing continues.
8187:
8188: =item (Yellow) INFO: Connection <ip> <name> connection type = <type>
8189:
8190: In child initialization. A good connectionw as received from <ip>.
8191:
8192: =over 2
8193:
8194: =item <name>
8195:
8196: is the name of the client from hosts.tab.
8197:
8198: =item <type>
8199:
8200: Is the connection type which is either
8201:
8202: =over 2
8203:
8204: =item manager
8205:
8206: The connection is from a manager node, not in hosts.tab
8207:
8208: =item client
8209:
8210: the connection is from a non-manager in the hosts.tab
8211:
8212: =item both
8213:
8214: The connection is from a manager in the hosts.tab.
8215:
8216: =back
8217:
8218: =back
8219:
8220: =item (Blue) Certificates not installed -- trying insecure auth
8221:
8222: One of the certificate file, key file or
8223: certificate authority file could not be found for a client attempting
8224: SSL connection intiation. COnnection will be attemptied in in-secure mode.
8225: (this would be a system with an up to date lond that has not gotten a
8226: certificate from us).
8227:
8228: =item (Green) Successful local authentication
8229:
8230: A local connection successfully negotiated the encryption key.
8231: In this case the IDEA key is in a file (that is hopefully well protected).
8232:
8233: =item (Green) Successful ssl authentication with <client>
8234:
8235: The client (<client> is the peer's name in hosts.tab), has successfully
8236: negotiated an SSL connection with this child process.
8237:
8238: =item (Green) Successful insecure authentication with <client>
8239:
8240:
8241: The client has successfully negotiated an insecure connection withthe child process.
8242:
8243: =item (Yellow) Attempted insecure connection disallowed
8244:
8245: The client attempted and failed to successfully negotiate a successful insecure
8246: connection. This can happen either because the variable londAllowInsecure is false
8247: or undefined, or becuse the child did not successfully echo back the challenge
8248: string.
8249:
8250:
8251: =back
8252:
1.441 raeburn 8253: =back
8254:
1.409 foxr 8255:
8256: =cut
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