Annotation of loncom/lond, revision 1.489.2.43.2.11
1.1 albertel 1: #!/usr/bin/perl
2: # The LearningOnline Network
3: # lond "LON Daemon" Server (port "LOND" 5663)
1.60 www 4: #
1.489.2.43.2. 1(raebur 5:4): # $Id: lond,v 1.489.2.43.2.10 2023/12/29 20:10:17 raeburn Exp $
1.60 www 6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
1.167 foxr 13: # the Free Software Foundation; either version 2 of the License, or
1.60 www 14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
1.178 foxr 23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
1.60 www 24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
1.161 foxr 27:
28:
1.60 www 29: # http://www.lon-capa.org/
30: #
1.54 harris41 31:
1.134 albertel 32: use strict;
1.80 harris41 33: use lib '/home/httpd/lib/perl/';
1.325 albertel 34: use LONCAPA;
1.80 harris41 35: use LONCAPA::Configuration;
1.489.2.4 raeburn 36: use LONCAPA::Lond;
1.80 harris41 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;
1.489.2.21 raeburn 57: use Crypt::Eksblowfish::Bcrypt;
58: use Digest::SHA;
59: use Encode;
1.1 albertel 60:
1.463 foxr 61: my $DEBUG = 0; # Non zero to enable debug log entries.
1.77 foxr 62:
1.57 www 63: my $status='';
64: my $lastlog='';
65:
1.489.2.43.2. 1(raebur 66:4): my $VERSION='$Revision: 1.489.2.43.2.10 $'; #' stupid emacs
1.121 albertel 67: my $remoteVERSION;
1.214 foxr 68: my $currenthostid="default";
1.115 albertel 69: my $currentdomainid;
1.134 albertel 70:
71: my $client;
1.200 matthew 72: my $clientip; # IP address of client.
73: my $clientname; # LonCAPA name of client.
1.448 raeburn 74: my $clientversion; # LonCAPA version running on client.
75: my $clienthomedom; # LonCAPA domain of homeID for client.
76: # primary library server.
1.140 foxr 77:
1.134 albertel 78: my $server;
1.200 matthew 79:
80: my $keymode;
1.198 foxr 81:
1.207 foxr 82: my $cipher; # Cipher key negotiated with client
83: my $tmpsnum = 0; # Id of tmpputs.
84:
1.178 foxr 85: #
86: # Connection type is:
87: # client - All client actions are allowed
88: # manager - only management functions allowed.
89: # both - Both management and client actions are allowed
90: #
1.161 foxr 91:
1.178 foxr 92: my $ConnectionType;
1.161 foxr 93:
1.178 foxr 94: my %managers; # Ip -> manager names
1.161 foxr 95:
1.178 foxr 96: my %perlvar; # Will have the apache conf defined perl vars.
1.134 albertel 97:
1.480 raeburn 98: my $dist;
99:
1.178 foxr 100: #
1.207 foxr 101: # The hash below is used for command dispatching, and is therefore keyed on the request keyword.
102: # Each element of the hash contains a reference to an array that contains:
103: # A reference to a sub that executes the request corresponding to the keyword.
104: # A flag that is true if the request must be encoded to be acceptable.
105: # A mask with bits as follows:
106: # CLIENT_OK - Set when the function is allowed by ordinary clients
107: # MANAGER_OK - Set when the function is allowed to manager clients.
108: #
109: my $CLIENT_OK = 1;
110: my $MANAGER_OK = 2;
111: my %Dispatcher;
112:
113:
114: #
1.178 foxr 115: # The array below are password error strings."
116: #
117: my $lastpwderror = 13; # Largest error number from lcpasswd.
118: my @passwderrors = ("ok",
1.287 foxr 119: "pwchange_failure - lcpasswd must be run as user 'www'",
120: "pwchange_failure - lcpasswd got incorrect number of arguments",
121: "pwchange_failure - lcpasswd did not get the right nubmer of input text lines",
122: "pwchange_failure - lcpasswd too many simultaneous pwd changes in progress",
123: "pwchange_failure - lcpasswd User does not exist.",
124: "pwchange_failure - lcpasswd Incorrect current passwd",
125: "pwchange_failure - lcpasswd Unable to su to root.",
126: "pwchange_failure - lcpasswd Cannot set new passwd.",
127: "pwchange_failure - lcpasswd Username has invalid characters",
128: "pwchange_failure - lcpasswd Invalid characters in password",
129: "pwchange_failure - lcpasswd User already exists",
130: "pwchange_failure - lcpasswd Something went wrong with user addition.",
131: "pwchange_failure - lcpasswd Password mismatch",
132: "pwchange_failure - lcpasswd Error filename is invalid");
1.97 foxr 133:
134:
1.412 foxr 135: # This array are the errors from lcinstallfile:
136:
137: my @installerrors = ("ok",
138: "Initial user id of client not that of www",
139: "Usage error, not enough command line arguments",
1.489.2.5 raeburn 140: "Source filename does not exist",
141: "Destination filename does not exist",
1.412 foxr 142: "Some file operation failed",
143: "Invalid table filename."
144: );
1.207 foxr 145:
146: #
147: # Statistics that are maintained and dislayed in the status line.
148: #
1.212 foxr 149: my $Transactions = 0; # Number of attempted transactions.
150: my $Failures = 0; # Number of transcations failed.
1.207 foxr 151:
152: # ResetStatistics:
153: # Resets the statistics counters:
154: #
155: sub ResetStatistics {
156: $Transactions = 0;
157: $Failures = 0;
158: }
159:
1.200 matthew 160: #------------------------------------------------------------------------
161: #
162: # LocalConnection
163: # Completes the formation of a locally authenticated connection.
164: # This function will ensure that the 'remote' client is really the
165: # local host. If not, the connection is closed, and the function fails.
166: # If so, initcmd is parsed for the name of a file containing the
167: # IDEA session key. The fie is opened, read, deleted and the session
168: # key returned to the caller.
169: #
170: # Parameters:
171: # $Socket - Socket open on client.
172: # $initcmd - The full text of the init command.
173: #
174: # Returns:
175: # IDEA session key on success.
176: # undef on failure.
177: #
178: sub LocalConnection {
179: my ($Socket, $initcmd) = @_;
1.373 albertel 180: Debug("Attempting local connection: $initcmd client: $clientip");
1.277 albertel 181: if($clientip ne "127.0.0.1") {
1.200 matthew 182: &logthis('<font color="red"> LocalConnection rejecting non local: '
1.373 albertel 183: ."$clientip ne 127.0.0.1 </font>");
1.200 matthew 184: close $Socket;
185: return undef;
1.224 foxr 186: } else {
1.200 matthew 187: chomp($initcmd); # Get rid of \n in filename.
188: my ($init, $type, $name) = split(/:/, $initcmd);
189: Debug(" Init command: $init $type $name ");
190:
191: # Require that $init = init, and $type = local: Otherwise
192: # the caller is insane:
193:
194: if(($init ne "init") && ($type ne "local")) {
195: &logthis('<font color = "red"> LocalConnection: caller is insane! '
196: ."init = $init, and type = $type </font>");
197: close($Socket);;
198: return undef;
199:
200: }
201: # Now get the key filename:
202:
203: my $IDEAKey = lonlocal::ReadKeyFile($name);
204: return $IDEAKey;
205: }
206: }
207: #------------------------------------------------------------------------------
208: #
209: # SSLConnection
210: # Completes the formation of an ssh authenticated connection. The
211: # socket is promoted to an ssl socket. If this promotion and the associated
212: # certificate exchange are successful, the IDEA key is generated and sent
213: # to the remote peer via the SSL tunnel. The IDEA key is also returned to
214: # the caller after the SSL tunnel is torn down.
215: #
216: # Parameters:
217: # Name Type Purpose
218: # $Socket IO::Socket::INET Plaintext socket.
219: #
220: # Returns:
221: # IDEA key on success.
222: # undef on failure.
223: #
224: sub SSLConnection {
225: my $Socket = shift;
226:
227: Debug("SSLConnection: ");
228: my $KeyFile = lonssl::KeyFile();
229: if(!$KeyFile) {
230: my $err = lonssl::LastError();
231: &logthis("<font color=\"red\"> CRITICAL"
232: ."Can't get key file $err </font>");
233: return undef;
234: }
235: my ($CACertificate,
236: $Certificate) = lonssl::CertificateFile();
237:
238:
239: # If any of the key, certificate or certificate authority
240: # certificate filenames are not defined, this can't work.
241:
242: if((!$Certificate) || (!$CACertificate)) {
243: my $err = lonssl::LastError();
244: &logthis("<font color=\"red\"> CRITICAL"
245: ."Can't get certificates: $err </font>");
246:
247: return undef;
248: }
249: Debug("Key: $KeyFile CA: $CACertificate Cert: $Certificate");
250:
251: # Indicate to our peer that we can procede with
252: # a transition to ssl authentication:
253:
254: print $Socket "ok:ssl\n";
255:
256: Debug("Approving promotion -> ssl");
257: # And do so:
258:
259: my $SSLSocket = lonssl::PromoteServerSocket($Socket,
260: $CACertificate,
261: $Certificate,
262: $KeyFile);
263: if(! ($SSLSocket) ) { # SSL socket promotion failed.
264: my $err = lonssl::LastError();
265: &logthis("<font color=\"red\"> CRITICAL "
266: ."SSL Socket promotion failed: $err </font>");
267: return undef;
268: }
269: Debug("SSL Promotion successful");
270:
271: #
272: # The only thing we'll use the socket for is to send the IDEA key
273: # to the peer:
274:
275: my $Key = lonlocal::CreateCipherKey();
276: print $SSLSocket "$Key\n";
277:
278: lonssl::Close($SSLSocket);
279:
280: Debug("Key exchange complete: $Key");
281:
282: return $Key;
283: }
284: #
285: # InsecureConnection:
286: # If insecure connections are allowd,
287: # exchange a challenge with the client to 'validate' the
288: # client (not really, but that's the protocol):
289: # We produce a challenge string that's sent to the client.
290: # The client must then echo the challenge verbatim to us.
291: #
292: # Parameter:
293: # Socket - Socket open on the client.
294: # Returns:
295: # 1 - success.
296: # 0 - failure (e.g.mismatch or insecure not allowed).
297: #
298: sub InsecureConnection {
299: my $Socket = shift;
300:
301: # Don't even start if insecure connections are not allowed.
302:
303: if(! $perlvar{londAllowInsecure}) { # Insecure connections not allowed.
304: return 0;
305: }
306:
307: # Fabricate a challenge string and send it..
308:
309: my $challenge = "$$".time; # pid + time.
310: print $Socket "$challenge\n";
311: &status("Waiting for challenge reply");
312:
313: my $answer = <$Socket>;
314: $answer =~s/\W//g;
315: if($challenge eq $answer) {
316: return 1;
1.224 foxr 317: } else {
1.200 matthew 318: logthis("<font color='blue'>WARNING client did not respond to challenge</font>");
319: &status("No challenge reqply");
320: return 0;
321: }
322:
323:
324: }
1.251 foxr 325: #
326: # Safely execute a command (as long as it's not a shel command and doesn
327: # not require/rely on shell escapes. The function operates by doing a
328: # a pipe based fork and capturing stdout and stderr from the pipe.
329: #
330: # Formal Parameters:
331: # $line - A line of text to be executed as a command.
332: # Returns:
333: # The output from that command. If the output is multiline the caller
334: # must know how to split up the output.
335: #
336: #
337: sub execute_command {
338: my ($line) = @_;
339: my @words = split(/\s/, $line); # Bust the command up into words.
340: my $output = "";
341:
342: my $pid = open(CHILD, "-|");
343:
344: if($pid) { # Parent process
345: Debug("In parent process for execute_command");
346: my @data = <CHILD>; # Read the child's outupt...
347: close CHILD;
348: foreach my $output_line (@data) {
349: Debug("Adding $output_line");
350: $output .= $output_line; # Presumably has a \n on it.
351: }
352:
353: } else { # Child process
354: close (STDERR);
355: open (STDERR, ">&STDOUT");# Combine stderr, and stdout...
356: exec(@words); # won't return.
357: }
358: return $output;
359: }
360:
1.200 matthew 361:
1.140 foxr 362: # GetCertificate: Given a transaction that requires a certificate,
363: # this function will extract the certificate from the transaction
364: # request. Note that at this point, the only concept of a certificate
365: # is the hostname to which we are connected.
366: #
367: # Parameter:
368: # request - The request sent by our client (this parameterization may
369: # need to change when we really use a certificate granting
370: # authority.
371: #
372: sub GetCertificate {
373: my $request = shift;
374:
375: return $clientip;
376: }
1.161 foxr 377:
1.178 foxr 378: #
379: # Return true if client is a manager.
380: #
381: sub isManager {
382: return (($ConnectionType eq "manager") || ($ConnectionType eq "both"));
383: }
384: #
385: # Return tru if client can do client functions
386: #
387: sub isClient {
388: return (($ConnectionType eq "client") || ($ConnectionType eq "both"));
389: }
1.161 foxr 390:
391:
1.156 foxr 392: #
393: # ReadManagerTable: Reads in the current manager table. For now this is
394: # done on each manager authentication because:
395: # - These authentications are not frequent
396: # - This allows dynamic changes to the manager table
397: # without the need to signal to the lond.
398: #
399: sub ReadManagerTable {
400:
1.412 foxr 401: &Debug("Reading manager table");
1.156 foxr 402: # Clean out the old table first..
403:
1.166 foxr 404: foreach my $key (keys %managers) {
405: delete $managers{$key};
406: }
407:
408: my $tablename = $perlvar{'lonTabDir'}."/managers.tab";
409: if (!open (MANAGERS, $tablename)) {
1.473 raeburn 410: my $hostname = &Apache::lonnet::hostname($perlvar{'lonHostID'});
411: if (&Apache::lonnet::is_LC_dns($hostname)) {
1.472 raeburn 412: &logthis('<font color="red">No manager table. Nobody can manage!!</font>');
413: }
414: return;
1.166 foxr 415: }
416: while(my $host = <MANAGERS>) {
417: chomp($host);
418: if ($host =~ "^#") { # Comment line.
419: next;
420: }
1.368 albertel 421: if (!defined &Apache::lonnet::get_host_ip($host)) { # This is a non cluster member
1.161 foxr 422: # The entry is of the form:
423: # cluname:hostname
424: # cluname - A 'cluster hostname' is needed in order to negotiate
425: # the host key.
426: # hostname- The dns name of the host.
427: #
1.166 foxr 428: my($cluname, $dnsname) = split(/:/, $host);
429:
430: my $ip = gethostbyname($dnsname);
431: if(defined($ip)) { # bad names don't deserve entry.
432: my $hostip = inet_ntoa($ip);
433: $managers{$hostip} = $cluname;
434: logthis('<font color="green"> registering manager '.
435: "$dnsname as $cluname with $hostip </font>\n");
436: }
437: } else {
438: logthis('<font color="green"> existing host'." $host</font>\n");
1.472 raeburn 439: $managers{&Apache::lonnet::get_host_ip($host)} = $host; # Use info from cluster tab if cluster memeber
1.166 foxr 440: }
441: }
1.156 foxr 442: }
1.140 foxr 443:
444: #
445: # ValidManager: Determines if a given certificate represents a valid manager.
446: # in this primitive implementation, the 'certificate' is
447: # just the connecting loncapa client name. This is checked
448: # against a valid client list in the configuration.
449: #
450: #
451: sub ValidManager {
452: my $certificate = shift;
453:
1.163 foxr 454: return isManager;
1.140 foxr 455: }
456: #
1.143 foxr 457: # CopyFile: Called as part of the process of installing a
458: # new configuration file. This function copies an existing
459: # file to a backup file.
460: # Parameters:
461: # oldfile - Name of the file to backup.
462: # newfile - Name of the backup file.
463: # Return:
464: # 0 - Failure (errno has failure reason).
465: # 1 - Success.
466: #
467: sub CopyFile {
1.192 foxr 468:
469: my ($oldfile, $newfile) = @_;
1.143 foxr 470:
1.281 matthew 471: if (! copy($oldfile,$newfile)) {
472: return 0;
1.143 foxr 473: }
1.281 matthew 474: chmod(0660, $newfile);
475: return 1;
1.143 foxr 476: }
1.157 foxr 477: #
478: # Host files are passed out with externally visible host IPs.
479: # If, for example, we are behind a fire-wall or NAT host, our
480: # internally visible IP may be different than the externally
481: # visible IP. Therefore, we always adjust the contents of the
482: # host file so that the entry for ME is the IP that we believe
483: # we have. At present, this is defined as the entry that
484: # DNS has for us. If by some chance we are not able to get a
485: # DNS translation for us, then we assume that the host.tab file
486: # is correct.
487: # BUGBUGBUG - in the future, we really should see if we can
488: # easily query the interface(s) instead.
489: # Parameter(s):
490: # contents - The contents of the host.tab to check.
491: # Returns:
492: # newcontents - The adjusted contents.
493: #
494: #
495: sub AdjustHostContents {
496: my $contents = shift;
497: my $adjusted;
498: my $me = $perlvar{'lonHostID'};
499:
1.354 albertel 500: foreach my $line (split(/\n/,$contents)) {
1.472 raeburn 501: if(!(($line eq "") || ($line =~ /^ *\#/) || ($line =~ /^ *$/) ||
502: ($line =~ /^\s*\^/))) {
1.157 foxr 503: chomp($line);
504: my ($id,$domain,$role,$name,$ip,$maxcon,$idleto,$mincon)=split(/:/,$line);
505: if ($id eq $me) {
1.354 albertel 506: my $ip = gethostbyname($name);
507: my $ipnew = inet_ntoa($ip);
508: $ip = $ipnew;
1.157 foxr 509: # Reconstruct the host line and append to adjusted:
510:
1.354 albertel 511: my $newline = "$id:$domain:$role:$name:$ip";
512: if($maxcon ne "") { # Not all hosts have loncnew tuning params
513: $newline .= ":$maxcon:$idleto:$mincon";
514: }
515: $adjusted .= $newline."\n";
1.157 foxr 516:
1.354 albertel 517: } else { # Not me, pass unmodified.
518: $adjusted .= $line."\n";
519: }
1.157 foxr 520: } else { # Blank or comment never re-written.
521: $adjusted .= $line."\n"; # Pass blanks and comments as is.
522: }
1.354 albertel 523: }
524: return $adjusted;
1.157 foxr 525: }
1.143 foxr 526: #
527: # InstallFile: Called to install an administrative file:
1.412 foxr 528: # - The file is created int a temp directory called <name>.tmp
529: # - lcinstall file is called to install the file.
530: # since the web app has no direct write access to the table directory
1.143 foxr 531: #
532: # Parameters:
533: # Name of the file
534: # File Contents.
535: # Return:
536: # nonzero - success.
537: # 0 - failure and $! has an errno.
1.412 foxr 538: # Assumptions:
539: # File installtion is a relatively infrequent
1.143 foxr 540: #
541: sub InstallFile {
1.192 foxr 542:
543: my ($Filename, $Contents) = @_;
1.412 foxr 544: # my $TempFile = $Filename.".tmp";
545: my $exedir = $perlvar{'lonDaemons'};
546: my $tmpdir = $exedir.'/tmp/';
547: my $TempFile = $tmpdir."TempTableFile.tmp";
1.143 foxr 548:
549: # Open the file for write:
550:
551: my $fh = IO::File->new("> $TempFile"); # Write to temp.
552: if(!(defined $fh)) {
553: &logthis('<font color="red"> Unable to create '.$TempFile."</font>");
554: return 0;
555: }
556: # write the contents of the file:
557:
558: print $fh ($Contents);
559: $fh->close; # In case we ever have a filesystem w. locking
560:
1.412 foxr 561: chmod(0664, $TempFile); # Everyone can write it.
562:
563: # Use lcinstall file to put the file in the table directory...
564:
565: &Debug("Opening pipe to $exedir/lcinstallfile $TempFile $Filename");
566: my $pf = IO::File->new("| $exedir/lcinstallfile $TempFile $Filename > $exedir/logs/lcinstallfile.log");
567: close $pf;
568: my $err = $?;
569: &Debug("Status is $err");
570: if ($err != 0) {
571: my $msg = $err;
572: if ($err < @installerrors) {
573: $msg = $installerrors[$err];
574: }
575: &logthis("Install failed for table file $Filename : $msg");
576: return 0;
577: }
578:
579: # Remove the temp file:
1.143 foxr 580:
1.412 foxr 581: unlink($TempFile);
1.143 foxr 582:
583: return 1;
584: }
1.200 matthew 585:
586:
1.169 foxr 587: #
588: # ConfigFileFromSelector: converts a configuration file selector
1.411 foxr 589: # into a configuration file pathname.
1.472 raeburn 590: # Supports the following file selectors:
591: # hosts, domain, dns_hosts, dns_domain
1.411 foxr 592: #
1.169 foxr 593: #
594: # Parameters:
595: # selector - Configuration file selector.
596: # Returns:
597: # Full path to the file or undef if the selector is invalid.
598: #
599: sub ConfigFileFromSelector {
600: my $selector = shift;
601: my $tablefile;
602:
603: my $tabledir = $perlvar{'lonTabDir'}.'/';
1.472 raeburn 604: if (($selector eq "hosts") || ($selector eq "domain") ||
605: ($selector eq "dns_hosts") || ($selector eq "dns_domain")) {
1.411 foxr 606: $tablefile = $tabledir.$selector.'.tab';
1.169 foxr 607: }
608: return $tablefile;
609: }
1.143 foxr 610: #
1.141 foxr 611: # PushFile: Called to do an administrative push of a file.
612: # - Ensure the file being pushed is one we support.
613: # - Backup the old file to <filename.saved>
614: # - Separate the contents of the new file out from the
615: # rest of the request.
616: # - Write the new file.
617: # Parameter:
618: # Request - The entire user request. This consists of a : separated
619: # string pushfile:tablename:contents.
620: # NOTE: The contents may have :'s in it as well making things a bit
621: # more interesting... but not much.
622: # Returns:
623: # String to send to client ("ok" or "refused" if bad file).
624: #
625: sub PushFile {
1.489.2.15 raeburn 626: my $request = shift;
1.141 foxr 627: my ($command, $filename, $contents) = split(":", $request, 3);
1.412 foxr 628: &Debug("PushFile");
1.141 foxr 629:
630: # At this point in time, pushes for only the following tables are
631: # supported:
632: # hosts.tab ($filename eq host).
633: # domain.tab ($filename eq domain).
1.472 raeburn 634: # dns_hosts.tab ($filename eq dns_host).
635: # dns_domain.tab ($filename eq dns_domain).
1.141 foxr 636: # Construct the destination filename or reject the request.
637: #
638: # lonManage is supposed to ensure this, however this session could be
639: # part of some elaborate spoof that managed somehow to authenticate.
640: #
641:
1.169 foxr 642:
643: my $tablefile = ConfigFileFromSelector($filename);
644: if(! (defined $tablefile)) {
1.141 foxr 645: return "refused";
646: }
1.412 foxr 647:
1.157 foxr 648: # If the file being pushed is the host file, we adjust the entry for ourself so that the
649: # IP will be our current IP as looked up in dns. Note this is only 99% good as it's possible
650: # to conceive of conditions where we don't have a DNS entry locally. This is possible in a
651: # network sense but it doesn't make much sense in a LonCAPA sense so we ignore (for now)
652: # that possibilty.
653:
654: if($filename eq "host") {
655: $contents = AdjustHostContents($contents);
1.489.2.43.2. (raeburn 656:): } elsif (($filename eq 'dns_hosts') || ($filename eq 'dns_domain')) {
1.489.2.15 raeburn 657: if ($contents eq '') {
658: &logthis('<font color="red"> Pushfile: unable to install '
659: .$tablefile." - no data received from push. </font>");
660: return 'error: push had no data';
661: }
662: if (&Apache::lonnet::get_host_ip($clientname)) {
663: my $clienthost = &Apache::lonnet::hostname($clientname);
664: if ($managers{$clientip} eq $clientname) {
665: my $clientprotocol = $Apache::lonnet::protocol{$clientname};
666: $clientprotocol = 'http' if ($clientprotocol ne 'https');
667: my $url = '/adm/'.$filename;
668: $url =~ s{_}{/};
669: my $ua=new LWP::UserAgent;
670: $ua->timeout(60);
671: my $request=new HTTP::Request('GET',"$clientprotocol://$clienthost$url");
672: my $response=$ua->request($request);
673: if ($response->is_error()) {
674: &logthis('<font color="red"> Pushfile: unable to install '
675: .$tablefile." - error attempting to pull data. </font>");
676: return 'error: pull failed';
677: } else {
678: my $result = $response->content;
679: chomp($result);
680: unless ($result eq $contents) {
681: &logthis('<font color="red"> Pushfile: unable to install '
682: .$tablefile." - pushed data and pulled data differ. </font>");
683: my $pushleng = length($contents);
684: my $pullleng = length($result);
685: if ($pushleng != $pullleng) {
686: return "error: $pushleng vs $pullleng bytes";
687: } else {
688: return "error: mismatch push and pull";
689: }
690: }
691: }
692: }
693: }
1.157 foxr 694: }
695:
1.141 foxr 696: # Install the new file:
697:
1.412 foxr 698: &logthis("Installing new $tablefile contents:\n$contents");
1.143 foxr 699: if(!InstallFile($tablefile, $contents)) {
700: &logthis('<font color="red"> Pushfile: unable to install '
1.145 foxr 701: .$tablefile." $! </font>");
1.143 foxr 702: return "error:$!";
1.224 foxr 703: } else {
1.143 foxr 704: &logthis('<font color="green"> Installed new '.$tablefile
1.473 raeburn 705: ." - transaction by: $clientname ($clientip)</font>");
1.472 raeburn 706: my $adminmail = $perlvar{'lonAdmEMail'};
707: my $admindom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
708: if ($admindom ne '') {
709: my %domconfig =
710: &Apache::lonnet::get_dom('configuration',['contacts'],$admindom);
711: if (ref($domconfig{'contacts'}) eq 'HASH') {
712: if ($domconfig{'contacts'}{'adminemail'} ne '') {
713: $adminmail = $domconfig{'contacts'}{'adminemail'};
714: }
715: }
716: }
717: if ($adminmail =~ /^[^\@]+\@[^\@]+$/) {
718: my $msg = new Mail::Send;
719: $msg->to($adminmail);
720: $msg->subject('LON-CAPA DNS update on '.$perlvar{'lonHostID'});
721: $msg->add('Content-type','text/plain; charset=UTF-8');
722: if (my $fh = $msg->open()) {
723: print $fh 'Update to '.$tablefile.' from Cluster Manager '.
1.473 raeburn 724: "$clientname ($clientip)\n";
1.472 raeburn 725: $fh->close;
726: }
727: }
1.143 foxr 728: }
729:
1.141 foxr 730: # Indicate success:
731:
732: return "ok";
733:
734: }
1.145 foxr 735:
736: #
737: # Called to re-init either lonc or lond.
738: #
739: # Parameters:
740: # request - The full request by the client. This is of the form
741: # reinit:<process>
742: # where <process> is allowed to be either of
743: # lonc or lond
744: #
745: # Returns:
746: # The string to be sent back to the client either:
747: # ok - Everything worked just fine.
748: # error:why - There was a failure and why describes the reason.
749: #
750: #
751: sub ReinitProcess {
752: my $request = shift;
753:
1.146 foxr 754:
755: # separate the request (reinit) from the process identifier and
756: # validate it producing the name of the .pid file for the process.
757: #
758: #
759: my ($junk, $process) = split(":", $request);
1.147 foxr 760: my $processpidfile = $perlvar{'lonDaemons'}.'/logs/';
1.146 foxr 761: if($process eq 'lonc') {
762: $processpidfile = $processpidfile."lonc.pid";
1.147 foxr 763: if (!open(PIDFILE, "< $processpidfile")) {
764: return "error:Open failed for $processpidfile";
765: }
766: my $loncpid = <PIDFILE>;
767: close(PIDFILE);
768: logthis('<font color="red"> Reinitializing lonc pid='.$loncpid
769: ."</font>");
770: kill("USR2", $loncpid);
1.146 foxr 771: } elsif ($process eq 'lond') {
1.147 foxr 772: logthis('<font color="red"> Reinitializing self (lond) </font>');
773: &UpdateHosts; # Lond is us!!
1.146 foxr 774: } else {
775: &logthis('<font color="yellow" Invalid reinit request for '.$process
776: ."</font>");
777: return "error:Invalid process identifier $process";
778: }
1.145 foxr 779: return 'ok';
780: }
1.168 foxr 781: # Validate a line in a configuration file edit script:
782: # Validation includes:
783: # - Ensuring the command is valid.
784: # - Ensuring the command has sufficient parameters
785: # Parameters:
786: # scriptline - A line to validate (\n has been stripped for what it's worth).
1.167 foxr 787: #
1.168 foxr 788: # Return:
789: # 0 - Invalid scriptline.
790: # 1 - Valid scriptline
791: # NOTE:
792: # Only the command syntax is checked, not the executability of the
793: # command.
794: #
795: sub isValidEditCommand {
796: my $scriptline = shift;
797:
798: # Line elements are pipe separated:
799:
800: my ($command, $key, $newline) = split(/\|/, $scriptline);
801: &logthis('<font color="green"> isValideditCommand checking: '.
802: "Command = '$command', Key = '$key', Newline = '$newline' </font>\n");
803:
804: if ($command eq "delete") {
805: #
806: # key with no newline.
807: #
808: if( ($key eq "") || ($newline ne "")) {
809: return 0; # Must have key but no newline.
810: } else {
811: return 1; # Valid syntax.
812: }
1.169 foxr 813: } elsif ($command eq "replace") {
1.168 foxr 814: #
815: # key and newline:
816: #
817: if (($key eq "") || ($newline eq "")) {
818: return 0;
819: } else {
820: return 1;
821: }
1.169 foxr 822: } elsif ($command eq "append") {
823: if (($key ne "") && ($newline eq "")) {
824: return 1;
825: } else {
826: return 0;
827: }
1.168 foxr 828: } else {
829: return 0; # Invalid command.
830: }
831: return 0; # Should not get here!!!
832: }
1.169 foxr 833: #
834: # ApplyEdit - Applies an edit command to a line in a configuration
835: # file. It is the caller's responsiblity to validate the
836: # edit line.
837: # Parameters:
838: # $directive - A single edit directive to apply.
839: # Edit directives are of the form:
840: # append|newline - Appends a new line to the file.
841: # replace|key|newline - Replaces the line with key value 'key'
842: # delete|key - Deletes the line with key value 'key'.
843: # $editor - A config file editor object that contains the
844: # file being edited.
845: #
846: sub ApplyEdit {
1.192 foxr 847:
848: my ($directive, $editor) = @_;
1.169 foxr 849:
850: # Break the directive down into its command and its parameters
851: # (at most two at this point. The meaning of the parameters, if in fact
852: # they exist depends on the command).
853:
854: my ($command, $p1, $p2) = split(/\|/, $directive);
855:
856: if($command eq "append") {
857: $editor->Append($p1); # p1 - key p2 null.
858: } elsif ($command eq "replace") {
859: $editor->ReplaceLine($p1, $p2); # p1 - key p2 = newline.
860: } elsif ($command eq "delete") {
861: $editor->DeleteLine($p1); # p1 - key p2 null.
862: } else { # Should not get here!!!
863: die "Invalid command given to ApplyEdit $command"
864: }
865: }
866: #
867: # AdjustOurHost:
868: # Adjusts a host file stored in a configuration file editor object
869: # for the true IP address of this host. This is necessary for hosts
870: # that live behind a firewall.
871: # Those hosts have a publicly distributed IP of the firewall, but
872: # internally must use their actual IP. We assume that a given
873: # host only has a single IP interface for now.
874: # Formal Parameters:
875: # editor - The configuration file editor to adjust. This
876: # editor is assumed to contain a hosts.tab file.
877: # Strategy:
878: # - Figure out our hostname.
879: # - Lookup the entry for this host.
880: # - Modify the line to contain our IP
881: # - Do a replace for this host.
882: sub AdjustOurHost {
883: my $editor = shift;
884:
885: # figure out who I am.
886:
887: my $myHostName = $perlvar{'lonHostID'}; # LonCAPA hostname.
888:
889: # Get my host file entry.
890:
891: my $ConfigLine = $editor->Find($myHostName);
892: if(! (defined $ConfigLine)) {
893: die "AdjustOurHost - no entry for me in hosts file $myHostName";
894: }
895: # figure out my IP:
896: # Use the config line to get my hostname.
897: # Use gethostbyname to translate that into an IP address.
898: #
1.338 albertel 899: my ($id,$domain,$role,$name,$maxcon,$idleto,$mincon) = split(/:/,$ConfigLine);
1.169 foxr 900: #
901: # Reassemble the config line from the elements in the list.
902: # Note that if the loncnew items were not present before, they will
903: # be now even if they would be empty
904: #
905: my $newConfigLine = $id;
1.338 albertel 906: foreach my $item ($domain, $role, $name, $maxcon, $idleto, $mincon) {
1.169 foxr 907: $newConfigLine .= ":".$item;
908: }
909: # Replace the line:
910:
911: $editor->ReplaceLine($id, $newConfigLine);
912:
913: }
914: #
915: # ReplaceConfigFile:
916: # Replaces a configuration file with the contents of a
917: # configuration file editor object.
918: # This is done by:
919: # - Copying the target file to <filename>.old
920: # - Writing the new file to <filename>.tmp
921: # - Moving <filename.tmp> -> <filename>
922: # This laborious process ensures that the system is never without
923: # a configuration file that's at least valid (even if the contents
924: # may be dated).
925: # Parameters:
926: # filename - Name of the file to modify... this is a full path.
927: # editor - Editor containing the file.
928: #
929: sub ReplaceConfigFile {
1.192 foxr 930:
931: my ($filename, $editor) = @_;
1.168 foxr 932:
1.169 foxr 933: CopyFile ($filename, $filename.".old");
934:
935: my $contents = $editor->Get(); # Get the contents of the file.
936:
937: InstallFile($filename, $contents);
938: }
1.168 foxr 939: #
940: #
941: # Called to edit a configuration table file
1.167 foxr 942: # Parameters:
943: # request - The entire command/request sent by lonc or lonManage
944: # Return:
945: # The reply to send to the client.
1.168 foxr 946: #
1.167 foxr 947: sub EditFile {
948: my $request = shift;
949:
950: # Split the command into it's pieces: edit:filetype:script
951:
1.339 albertel 952: my ($cmd, $filetype, $script) = split(/:/, $request,3); # : in script
1.167 foxr 953:
954: # Check the pre-coditions for success:
955:
1.339 albertel 956: if($cmd != "edit") { # Something is amiss afoot alack.
1.167 foxr 957: return "error:edit request detected, but request != 'edit'\n";
958: }
959: if( ($filetype ne "hosts") &&
960: ($filetype ne "domain")) {
961: return "error:edit requested with invalid file specifier: $filetype \n";
962: }
963:
964: # Split the edit script and check it's validity.
1.168 foxr 965:
966: my @scriptlines = split(/\n/, $script); # one line per element.
967: my $linecount = scalar(@scriptlines);
968: for(my $i = 0; $i < $linecount; $i++) {
969: chomp($scriptlines[$i]);
970: if(!isValidEditCommand($scriptlines[$i])) {
971: return "error:edit with bad script line: '$scriptlines[$i]' \n";
972: }
973: }
1.145 foxr 974:
1.167 foxr 975: # Execute the edit operation.
1.169 foxr 976: # - Create a config file editor for the appropriate file and
977: # - execute each command in the script:
978: #
979: my $configfile = ConfigFileFromSelector($filetype);
980: if (!(defined $configfile)) {
981: return "refused\n";
982: }
983: my $editor = ConfigFileEdit->new($configfile);
1.167 foxr 984:
1.169 foxr 985: for (my $i = 0; $i < $linecount; $i++) {
986: ApplyEdit($scriptlines[$i], $editor);
987: }
988: # If the file is the host file, ensure that our host is
989: # adjusted to have our ip:
990: #
991: if($filetype eq "host") {
992: AdjustOurHost($editor);
993: }
994: # Finally replace the current file with our file.
995: #
996: ReplaceConfigFile($configfile, $editor);
1.167 foxr 997:
998: return "ok\n";
999: }
1.207 foxr 1000:
1.255 foxr 1001: # read_profile
1002: #
1003: # Returns a set of specific entries from a user's profile file.
1004: # this is a utility function that is used by both get_profile_entry and
1005: # get_profile_entry_encrypted.
1006: #
1007: # Parameters:
1008: # udom - Domain in which the user exists.
1009: # uname - User's account name (loncapa account)
1010: # namespace - The profile namespace to open.
1011: # what - A set of & separated queries.
1012: # Returns:
1013: # If all ok: - The string that needs to be shipped back to the user.
1014: # If failure - A string that starts with error: followed by the failure
1015: # reason.. note that this probabyl gets shipped back to the
1016: # user as well.
1017: #
1018: sub read_profile {
1019: my ($udom, $uname, $namespace, $what) = @_;
1020:
1021: my $hashref = &tie_user_hash($udom, $uname, $namespace,
1022: &GDBM_READER());
1023: if ($hashref) {
1024: my @queries=split(/\&/,$what);
1.440 raeburn 1025: if ($namespace eq 'roles') {
1026: @queries = map { &unescape($_); } @queries;
1027: }
1.255 foxr 1028: my $qresult='';
1029:
1030: for (my $i=0;$i<=$#queries;$i++) {
1031: $qresult.="$hashref->{$queries[$i]}&"; # Presumably failure gives empty string.
1032: }
1033: $qresult=~s/\&$//; # Remove trailing & from last lookup.
1.311 albertel 1034: if (&untie_user_hash($hashref)) {
1.255 foxr 1035: return $qresult;
1036: } else {
1037: return "error: ".($!+0)." untie (GDBM) Failed";
1038: }
1039: } else {
1040: if ($!+0 == 2) {
1041: return "error:No such file or GDBM reported bad block error";
1042: } else {
1043: return "error: ".($!+0)." tie (GDBM) Failed";
1044: }
1045: }
1046:
1047: }
1.214 foxr 1048: #--------------------- Request Handlers --------------------------------------------
1049: #
1.215 foxr 1050: # By convention each request handler registers itself prior to the sub
1051: # declaration:
1.214 foxr 1052: #
1053:
1.216 foxr 1054: #++
1055: #
1.214 foxr 1056: # Handles ping requests.
1057: # Parameters:
1058: # $cmd - the actual keyword that invoked us.
1059: # $tail - the tail of the request that invoked us.
1060: # $replyfd- File descriptor connected to the client
1061: # Implicit Inputs:
1062: # $currenthostid - Global variable that carries the name of the host we are
1063: # known as.
1064: # Returns:
1065: # 1 - Ok to continue processing.
1066: # 0 - Program should exit.
1067: # Side effects:
1068: # Reply information is sent to the client.
1069: sub ping_handler {
1070: my ($cmd, $tail, $client) = @_;
1071: Debug("$cmd $tail $client .. $currenthostid:");
1072:
1.387 albertel 1073: Reply( $client,\$currenthostid,"$cmd:$tail");
1.214 foxr 1074:
1075: return 1;
1076: }
1077: ®ister_handler("ping", \&ping_handler, 0, 1, 1); # Ping unencoded, client or manager.
1078:
1.216 foxr 1079: #++
1.215 foxr 1080: #
1081: # Handles pong requests. Pong replies with our current host id, and
1082: # the results of a ping sent to us via our lonc.
1083: #
1084: # Parameters:
1085: # $cmd - the actual keyword that invoked us.
1086: # $tail - the tail of the request that invoked us.
1087: # $replyfd- File descriptor connected to the client
1088: # Implicit Inputs:
1089: # $currenthostid - Global variable that carries the name of the host we are
1090: # connected to.
1091: # Returns:
1092: # 1 - Ok to continue processing.
1093: # 0 - Program should exit.
1094: # Side effects:
1095: # Reply information is sent to the client.
1096: sub pong_handler {
1097: my ($cmd, $tail, $replyfd) = @_;
1098:
1.365 albertel 1099: my $reply=&Apache::lonnet::reply("ping",$clientname);
1.215 foxr 1100: &Reply( $replyfd, "$currenthostid:$reply\n", "$cmd:$tail");
1101: return 1;
1102: }
1103: ®ister_handler("pong", \&pong_handler, 0, 1, 1); # Pong unencoded, client or manager
1104:
1.216 foxr 1105: #++
1106: # Called to establish an encrypted session key with the remote client.
1107: # Note that with secure lond, in most cases this function is never
1108: # invoked. Instead, the secure session key is established either
1109: # via a local file that's locked down tight and only lives for a short
1110: # time, or via an ssl tunnel...and is generated from a bunch-o-random
1111: # bits from /dev/urandom, rather than the predictable pattern used by
1112: # by this sub. This sub is only used in the old-style insecure
1113: # key negotiation.
1114: # Parameters:
1115: # $cmd - the actual keyword that invoked us.
1116: # $tail - the tail of the request that invoked us.
1117: # $replyfd- File descriptor connected to the client
1118: # Implicit Inputs:
1119: # $currenthostid - Global variable that carries the name of the host
1120: # known as.
1.448 raeburn 1121: # $clientname - Global variable that carries the name of the host we're connected to.
1.216 foxr 1122: # Returns:
1123: # 1 - Ok to continue processing.
1124: # 0 - Program should exit.
1125: # Implicit Outputs:
1126: # Reply information is sent to the client.
1127: # $cipher is set with a reference to a new IDEA encryption object.
1128: #
1129: sub establish_key_handler {
1130: my ($cmd, $tail, $replyfd) = @_;
1131:
1132: my $buildkey=time.$$.int(rand 100000);
1133: $buildkey=~tr/1-6/A-F/;
1134: $buildkey=int(rand 100000).$buildkey.int(rand 100000);
1135: my $key=$currenthostid.$clientname;
1136: $key=~tr/a-z/A-Z/;
1137: $key=~tr/G-P/0-9/;
1138: $key=~tr/Q-Z/0-9/;
1139: $key=$key.$buildkey.$key.$buildkey.$key.$buildkey;
1140: $key=substr($key,0,32);
1141: my $cipherkey=pack("H32",$key);
1142: $cipher=new IDEA $cipherkey;
1.387 albertel 1143: &Reply($replyfd, \$buildkey, "$cmd:$tail");
1.216 foxr 1144:
1145: return 1;
1146:
1147: }
1148: ®ister_handler("ekey", \&establish_key_handler, 0, 1,1);
1149:
1.217 foxr 1150: # Handler for the load command. Returns the current system load average
1151: # to the requestor.
1152: #
1153: # Parameters:
1154: # $cmd - the actual keyword that invoked us.
1155: # $tail - the tail of the request that invoked us.
1156: # $replyfd- File descriptor connected to the client
1157: # Implicit Inputs:
1158: # $currenthostid - Global variable that carries the name of the host
1159: # known as.
1.448 raeburn 1160: # $clientname - Global variable that carries the name of the host we're connected to.
1.217 foxr 1161: # Returns:
1162: # 1 - Ok to continue processing.
1163: # 0 - Program should exit.
1164: # Side effects:
1165: # Reply information is sent to the client.
1166: sub load_handler {
1167: my ($cmd, $tail, $replyfd) = @_;
1168:
1.463 foxr 1169:
1170:
1.217 foxr 1171: # Get the load average from /proc/loadavg and calculate it as a percentage of
1172: # the allowed load limit as set by the perl global variable lonLoadLim
1173:
1174: my $loadavg;
1175: my $loadfile=IO::File->new('/proc/loadavg');
1176:
1177: $loadavg=<$loadfile>;
1178: $loadavg =~ s/\s.*//g; # Extract the first field only.
1179:
1180: my $loadpercent=100*$loadavg/$perlvar{'lonLoadLim'};
1181:
1.387 albertel 1182: &Reply( $replyfd, \$loadpercent, "$cmd:$tail");
1.217 foxr 1183:
1184: return 1;
1185: }
1.263 albertel 1186: ®ister_handler("load", \&load_handler, 0, 1, 0);
1.217 foxr 1187:
1188: #
1189: # Process the userload request. This sub returns to the client the current
1190: # user load average. It can be invoked either by clients or managers.
1191: #
1192: # Parameters:
1193: # $cmd - the actual keyword that invoked us.
1194: # $tail - the tail of the request that invoked us.
1195: # $replyfd- File descriptor connected to the client
1196: # Implicit Inputs:
1197: # $currenthostid - Global variable that carries the name of the host
1198: # known as.
1.448 raeburn 1199: # $clientname - Global variable that carries the name of the host we're connected to.
1.217 foxr 1200: # Returns:
1201: # 1 - Ok to continue processing.
1202: # 0 - Program should exit
1203: # Implicit inputs:
1204: # whatever the userload() function requires.
1205: # Implicit outputs:
1206: # the reply is written to the client.
1207: #
1208: sub user_load_handler {
1209: my ($cmd, $tail, $replyfd) = @_;
1210:
1.365 albertel 1211: my $userloadpercent=&Apache::lonnet::userload();
1.387 albertel 1212: &Reply($replyfd, \$userloadpercent, "$cmd:$tail");
1.217 foxr 1213:
1214: return 1;
1215: }
1.263 albertel 1216: ®ister_handler("userload", \&user_load_handler, 0, 1, 0);
1.217 foxr 1217:
1.218 foxr 1218: # Process a request for the authorization type of a user:
1219: # (userauth).
1220: #
1221: # Parameters:
1222: # $cmd - the actual keyword that invoked us.
1223: # $tail - the tail of the request that invoked us.
1224: # $replyfd- File descriptor connected to the client
1225: # Returns:
1226: # 1 - Ok to continue processing.
1227: # 0 - Program should exit
1228: # Implicit outputs:
1229: # The user authorization type is written to the client.
1230: #
1231: sub user_authorization_type {
1232: my ($cmd, $tail, $replyfd) = @_;
1233:
1234: my $userinput = "$cmd:$tail";
1235:
1236: # Pull the domain and username out of the command tail.
1.222 foxr 1237: # and call get_auth_type to determine the authentication type.
1.218 foxr 1238:
1239: my ($udom,$uname)=split(/:/,$tail);
1.222 foxr 1240: my $result = &get_auth_type($udom, $uname);
1.218 foxr 1241: if($result eq "nouser") {
1242: &Failure( $replyfd, "unknown_user\n", $userinput);
1243: } else {
1244: #
1.222 foxr 1245: # We only want to pass the second field from get_auth_type
1.218 foxr 1246: # for ^krb.. otherwise we'll be handing out the encrypted
1247: # password for internals e.g.
1248: #
1249: my ($type,$otherinfo) = split(/:/,$result);
1250: if($type =~ /^krb/) {
1251: $type = $result;
1.269 raeburn 1252: } else {
1253: $type .= ':';
1254: }
1.387 albertel 1255: &Reply( $replyfd, \$type, $userinput);
1.218 foxr 1256: }
1257:
1258: return 1;
1259: }
1260: ®ister_handler("currentauth", \&user_authorization_type, 1, 1, 0);
1261:
1262: # Process a request by a manager to push a hosts or domain table
1263: # to us. We pick apart the command and pass it on to the subs
1264: # that already exist to do this.
1265: #
1266: # Parameters:
1267: # $cmd - the actual keyword that invoked us.
1268: # $tail - the tail of the request that invoked us.
1269: # $client - File descriptor connected to the client
1270: # Returns:
1271: # 1 - Ok to continue processing.
1272: # 0 - Program should exit
1273: # Implicit Output:
1274: # a reply is written to the client.
1275: sub push_file_handler {
1276: my ($cmd, $tail, $client) = @_;
1.412 foxr 1277: &Debug("In push file handler");
1.218 foxr 1278: my $userinput = "$cmd:$tail";
1279:
1280: # At this time we only know that the IP of our partner is a valid manager
1281: # the code below is a hook to do further authentication (e.g. to resolve
1282: # spoofing).
1283:
1284: my $cert = &GetCertificate($userinput);
1.412 foxr 1285: if(&ValidManager($cert)) {
1286: &Debug("Valid manager: $client");
1.218 foxr 1287:
1288: # Now presumably we have the bona fides of both the peer host and the
1289: # process making the request.
1290:
1291: my $reply = &PushFile($userinput);
1.387 albertel 1292: &Reply($client, \$reply, $userinput);
1.218 foxr 1293:
1294: } else {
1.412 foxr 1295: &logthis("push_file_handler $client is not valid");
1.218 foxr 1296: &Failure( $client, "refused\n", $userinput);
1297: }
1.219 foxr 1298: return 1;
1.218 foxr 1299: }
1300: ®ister_handler("pushfile", \&push_file_handler, 1, 0, 1);
1301:
1.399 raeburn 1302: # The du_handler routine should be considered obsolete and is retained
1303: # for communication with legacy servers. Please see the du2_handler.
1.243 banghart 1304: #
1.399 raeburn 1305: # du - list the disk usage of a directory recursively.
1.243 banghart 1306: #
1307: # note: stolen code from the ls file handler
1308: # under construction by Rick Banghart
1309: # .
1310: # Parameters:
1311: # $cmd - The command that dispatched us (du).
1312: # $ududir - The directory path to list... I'm not sure what this
1313: # is relative as things like ls:. return e.g.
1314: # no_such_dir.
1315: # $client - Socket open on the client.
1316: # Returns:
1317: # 1 - indicating that the daemon should not disconnect.
1318: # Side Effects:
1319: # The reply is written to $client.
1320: #
1321: sub du_handler {
1322: my ($cmd, $ududir, $client) = @_;
1.339 albertel 1323: ($ududir) = split(/:/,$ududir); # Make 'telnet' testing easier.
1.251 foxr 1324: my $userinput = "$cmd:$ududir";
1325:
1.245 albertel 1326: if ($ududir=~/\.\./ || $ududir!~m|^/home/httpd/|) {
1327: &Failure($client,"refused\n","$cmd:$ududir");
1328: return 1;
1329: }
1.249 foxr 1330: # Since $ududir could have some nasties in it,
1331: # we will require that ududir is a valid
1332: # directory. Just in case someone tries to
1333: # slip us a line like .;(cd /home/httpd rm -rf*)
1334: # etc.
1335: #
1336: if (-d $ududir) {
1.292 albertel 1337: my $total_size=0;
1338: my $code=sub {
1339: if ($_=~/\.\d+\./) { return;}
1340: if ($_=~/\.meta$/) { return;}
1.362 albertel 1341: if (-d $_) { return;}
1.292 albertel 1342: $total_size+=(stat($_))[7];
1343: };
1.295 raeburn 1344: chdir($ududir);
1.292 albertel 1345: find($code,$ududir);
1346: $total_size=int($total_size/1024);
1.387 albertel 1347: &Reply($client,\$total_size,"$cmd:$ududir");
1.249 foxr 1348: } else {
1.251 foxr 1349: &Failure($client, "bad_directory:$ududir\n","$cmd:$ududir");
1.249 foxr 1350: }
1.243 banghart 1351: return 1;
1352: }
1353: ®ister_handler("du", \&du_handler, 0, 1, 0);
1.218 foxr 1354:
1.399 raeburn 1355: # Please also see the du_handler, which is obsoleted by du2.
1356: # du2_handler differs from du_handler in that required path to directory
1357: # provided by &propath() is prepended in the handler instead of on the
1358: # client side.
1.239 foxr 1359: #
1.399 raeburn 1360: # du2 - list the disk usage of a directory recursively.
1361: #
1362: # Parameters:
1363: # $cmd - The command that dispatched us (du).
1364: # $tail - The tail of the request that invoked us.
1365: # $tail is a : separated list of the following:
1366: # - $ududir - directory path to list (before prepending)
1367: # - $getpropath = 1 if &propath() should prepend
1368: # - $uname - username to use for &propath or user dir
1369: # - $udom - domain to use for &propath or user dir
1370: # All are escaped.
1371: # $client - Socket open on the client.
1372: # Returns:
1373: # 1 - indicating that the daemon should not disconnect.
1374: # Side Effects:
1375: # The reply is written to $client.
1376: #
1377:
1378: sub du2_handler {
1379: my ($cmd, $tail, $client) = @_;
1380: my ($ududir,$getpropath,$uname,$udom) = map { &unescape($_) } (split(/:/, $tail));
1381: my $userinput = "$cmd:$tail";
1382: if (($ududir=~/\.\./) || (($ududir!~m|^/home/httpd/|) && (!$getpropath))) {
1383: &Failure($client,"refused\n","$cmd:$tail");
1384: return 1;
1385: }
1386: if ($getpropath) {
1387: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1388: $ududir = &propath($udom,$uname).'/'.$ududir;
1389: } else {
1390: &Failure($client,"refused\n","$cmd:$tail");
1391: return 1;
1392: }
1393: }
1394: # Since $ududir could have some nasties in it,
1395: # we will require that ududir is a valid
1396: # directory. Just in case someone tries to
1397: # slip us a line like .;(cd /home/httpd rm -rf*)
1398: # etc.
1399: #
1400: if (-d $ududir) {
1401: my $total_size=0;
1402: my $code=sub {
1403: if ($_=~/\.\d+\./) { return;}
1404: if ($_=~/\.meta$/) { return;}
1405: if (-d $_) { return;}
1406: $total_size+=(stat($_))[7];
1407: };
1408: chdir($ududir);
1409: find($code,$ududir);
1410: $total_size=int($total_size/1024);
1411: &Reply($client,\$total_size,"$cmd:$ududir");
1412: } else {
1413: &Failure($client, "bad_directory:$ududir\n","$cmd:$tail");
1414: }
1415: return 1;
1416: }
1417: ®ister_handler("du2", \&du2_handler, 0, 1, 0);
1418:
1419: #
1420: # The ls_handler routine should be considered obsolete and is retained
1421: # for communication with legacy servers. Please see the ls3_handler.
1.280 matthew 1422: #
1.239 foxr 1423: # ls - list the contents of a directory. For each file in the
1424: # selected directory the filename followed by the full output of
1425: # the stat function is returned. The returned info for each
1426: # file are separated by ':'. The stat fields are separated by &'s.
1.489.2.23 raeburn 1427: #
1428: # If the requested path contains /../ or is:
1429: #
1430: # 1. for a directory, and the path does not begin with one of:
1.489.2.25 raeburn 1431: # (a) /home/httpd/html/res/<domain>
1.489.2.28 raeburn 1432: # (b) /home/httpd/html/userfiles/
1.489.2.23 raeburn 1433: # (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
1434: # or is:
1435: #
1.489.2.28 raeburn 1436: # 2. for a file, and the path (after prepending) does not begin with one of:
1437: # (a) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
1438: # (b) /home/httpd/html/res/<domain>/<username>/
1439: # (c) /home/httpd/html/userfiles/<domain>/<username>/
1.489.2.23 raeburn 1440: #
1441: # the response will be "refused".
1442: #
1.239 foxr 1443: # Parameters:
1444: # $cmd - The command that dispatched us (ls).
1445: # $ulsdir - The directory path to list... I'm not sure what this
1446: # is relative as things like ls:. return e.g.
1447: # no_such_dir.
1448: # $client - Socket open on the client.
1449: # Returns:
1450: # 1 - indicating that the daemon should not disconnect.
1451: # Side Effects:
1452: # The reply is written to $client.
1453: #
1454: sub ls_handler {
1.280 matthew 1455: # obsoleted by ls2_handler
1.239 foxr 1456: my ($cmd, $ulsdir, $client) = @_;
1457:
1458: my $userinput = "$cmd:$ulsdir";
1459:
1460: my $obs;
1461: my $rights;
1462: my $ulsout='';
1463: my $ulsfn;
1.489.2.23 raeburn 1464: if ($ulsdir =~m{/\.\./}) {
1465: &Failure($client,"refused\n",$userinput);
1466: return 1;
1467: }
1.239 foxr 1468: if (-e $ulsdir) {
1469: if(-d $ulsdir) {
1.489.2.28 raeburn 1470: unless (($ulsdir =~ m{^/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
1471: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/userfiles})) {
1.489.2.23 raeburn 1472: &Failure($client,"refused\n",$userinput);
1473: return 1;
1474: }
1.239 foxr 1475: if (opendir(LSDIR,$ulsdir)) {
1476: while ($ulsfn=readdir(LSDIR)) {
1.291 albertel 1477: undef($obs);
1478: undef($rights);
1.239 foxr 1479: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1480: #We do some obsolete checking here
1481: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1482: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1483: my @obsolete=<FILE>;
1484: foreach my $obsolete (@obsolete) {
1.301 www 1485: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1.239 foxr 1486: if($obsolete =~ m|(<copyright>)(default)|) { $rights = 1; }
1487: }
1488: }
1489: $ulsout.=$ulsfn.'&'.join('&',@ulsstats);
1490: if($obs eq '1') { $ulsout.="&1"; }
1491: else { $ulsout.="&0"; }
1492: if($rights eq '1') { $ulsout.="&1:"; }
1493: else { $ulsout.="&0:"; }
1494: }
1495: closedir(LSDIR);
1496: }
1497: } else {
1.489.2.28 raeburn 1498: unless (($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) ||
1499: ($ulsdir =~ m{^/home/httpd/html/(?:res|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/})) {
1.489.2.23 raeburn 1500: &Failure($client,"refused\n",$userinput);
1501: return 1;
1502: }
1.239 foxr 1503: my @ulsstats=stat($ulsdir);
1504: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1505: }
1506: } else {
1507: $ulsout='no_such_dir';
1508: }
1509: if ($ulsout eq '') { $ulsout='empty'; }
1.387 albertel 1510: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1.239 foxr 1511:
1512: return 1;
1513:
1514: }
1515: ®ister_handler("ls", \&ls_handler, 0, 1, 0);
1516:
1.399 raeburn 1517: # The ls2_handler routine should be considered obsolete and is retained
1518: # for communication with legacy servers. Please see the ls3_handler.
1519: # Please also see the ls_handler, which was itself obsoleted by ls2.
1.280 matthew 1520: # ls2_handler differs from ls_handler in that it escapes its return
1521: # values before concatenating them together with ':'s.
1522: #
1523: # ls2 - list the contents of a directory. For each file in the
1524: # selected directory the filename followed by the full output of
1525: # the stat function is returned. The returned info for each
1526: # file are separated by ':'. The stat fields are separated by &'s.
1.489.2.23 raeburn 1527: #
1528: # If the requested path contains /../ or is:
1529: #
1530: # 1. for a directory, and the path does not begin with one of:
1.489.2.25 raeburn 1531: # (a) /home/httpd/html/res/<domain>
1.489.2.28 raeburn 1532: # (b) /home/httpd/html/userfiles/
1.489.2.23 raeburn 1533: # (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
1534: # or is:
1535: #
1.489.2.28 raeburn 1536: # 2. for a file, and the path (after prepending) does not begin with one of:
1537: # (a) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
1538: # (b) /home/httpd/html/res/<domain>/<username>/
1539: # (c) /home/httpd/html/userfiles/<domain>/<username>/
1.489.2.23 raeburn 1540: #
1541: # the response will be "refused".
1542: #
1.280 matthew 1543: # Parameters:
1544: # $cmd - The command that dispatched us (ls).
1545: # $ulsdir - The directory path to list... I'm not sure what this
1546: # is relative as things like ls:. return e.g.
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 $client.
1553: #
1554: sub ls2_handler {
1555: my ($cmd, $ulsdir, $client) = @_;
1556:
1557: my $userinput = "$cmd:$ulsdir";
1558:
1559: my $obs;
1560: my $rights;
1561: my $ulsout='';
1562: my $ulsfn;
1.489.2.23 raeburn 1563: if ($ulsdir =~m{/\.\./}) {
1564: &Failure($client,"refused\n",$userinput);
1565: return 1;
1566: }
1.280 matthew 1567: if (-e $ulsdir) {
1568: if(-d $ulsdir) {
1.489.2.28 raeburn 1569: unless (($ulsdir =~ m{^/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
1570: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/userfiles})) {
1.489.2.23 raeburn 1571: &Failure($client,"refused\n","$userinput");
1572: return 1;
1573: }
1.280 matthew 1574: if (opendir(LSDIR,$ulsdir)) {
1575: while ($ulsfn=readdir(LSDIR)) {
1.291 albertel 1576: undef($obs);
1577: undef($rights);
1.280 matthew 1578: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1579: #We do some obsolete checking here
1580: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1581: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1582: my @obsolete=<FILE>;
1583: foreach my $obsolete (@obsolete) {
1.301 www 1584: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1.280 matthew 1585: if($obsolete =~ m|(<copyright>)(default)|) {
1586: $rights = 1;
1587: }
1588: }
1589: }
1590: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1591: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1592: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1593: $ulsout.= &escape($tmp).':';
1594: }
1595: closedir(LSDIR);
1596: }
1597: } else {
1.489.2.28 raeburn 1598: unless (($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) ||
1599: ($ulsdir =~ m{^/home/httpd/html/(?:res|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/})) {
1.489.2.23 raeburn 1600: &Failure($client,"refused\n",$userinput);
1601: return 1;
1602: }
1.280 matthew 1603: my @ulsstats=stat($ulsdir);
1604: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1605: }
1606: } else {
1607: $ulsout='no_such_dir';
1608: }
1609: if ($ulsout eq '') { $ulsout='empty'; }
1.387 albertel 1610: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1.280 matthew 1611: return 1;
1612: }
1613: ®ister_handler("ls2", \&ls2_handler, 0, 1, 0);
1.399 raeburn 1614: #
1615: # ls3 - list the contents of a directory. For each file in the
1616: # selected directory the filename followed by the full output of
1617: # the stat function is returned. The returned info for each
1618: # file are separated by ':'. The stat fields are separated by &'s.
1.489.2.23 raeburn 1619: #
1620: # If the requested path (after prepending) contains /../ or is:
1621: #
1622: # 1. for a directory, and the path does not begin with one of:
1.489.2.25 raeburn 1623: # (a) /home/httpd/html/res/<domain>
1.489.2.28 raeburn 1624: # (b) /home/httpd/html/userfiles/
1.489.2.23 raeburn 1625: # (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
1.489.2.28 raeburn 1626: # (d) /home/httpd/html/priv/<domain> and client is the homeserver
1.489.2.23 raeburn 1627: #
1628: # or is:
1629: #
1.489.2.28 raeburn 1630: # 2. for a file, and the path (after prepending) does not begin with one of:
1631: # (a) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
1632: # (b) /home/httpd/html/res/<domain>/<username>/
1633: # (c) /home/httpd/html/userfiles/<domain>/<username>/
1634: # (d) /home/httpd/html/priv/<domain>/<username>/ and client is the homeserver
1.489.2.23 raeburn 1635: #
1636: # the response will be "refused".
1637: #
1.399 raeburn 1638: # Parameters:
1639: # $cmd - The command that dispatched us (ls).
1640: # $tail - The tail of the request that invoked us.
1641: # $tail is a : separated list of the following:
1642: # - $ulsdir - directory path to list (before prepending)
1643: # - $getpropath = 1 if &propath() should prepend
1644: # - $getuserdir = 1 if path to user dir in lonUsers should
1645: # prepend
1646: # - $alternate_root - path to prepend
1647: # - $uname - username to use for &propath or user dir
1648: # - $udom - domain to use for &propath or user dir
1649: # All of these except $getpropath and &getuserdir are escaped.
1650: # no_such_dir.
1651: # $client - Socket open on the client.
1652: # Returns:
1653: # 1 - indicating that the daemon should not disconnect.
1654: # Side Effects:
1655: # The reply is written to $client.
1656: #
1657:
1658: sub ls3_handler {
1659: my ($cmd, $tail, $client) = @_;
1660: my $userinput = "$cmd:$tail";
1661: my ($ulsdir,$getpropath,$getuserdir,$alternate_root,$uname,$udom) =
1662: split(/:/,$tail);
1663: if (defined($ulsdir)) {
1664: $ulsdir = &unescape($ulsdir);
1665: }
1666: if (defined($alternate_root)) {
1667: $alternate_root = &unescape($alternate_root);
1668: }
1669: if (defined($uname)) {
1670: $uname = &unescape($uname);
1671: }
1672: if (defined($udom)) {
1673: $udom = &unescape($udom);
1674: }
1675:
1676: my $dir_root = $perlvar{'lonDocRoot'};
1.489.2.23 raeburn 1677: if (($getpropath) || ($getuserdir)) {
1.399 raeburn 1678: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1679: $dir_root = &propath($udom,$uname);
1680: $dir_root =~ s/\/$//;
1681: } else {
1.489.2.23 raeburn 1682: &Failure($client,"refused\n",$userinput);
1.399 raeburn 1683: return 1;
1684: }
1.400 raeburn 1685: } elsif ($alternate_root ne '') {
1.399 raeburn 1686: $dir_root = $alternate_root;
1687: }
1.408 raeburn 1688: if (($dir_root ne '') && ($dir_root ne '/')) {
1.400 raeburn 1689: if ($ulsdir =~ /^\//) {
1690: $ulsdir = $dir_root.$ulsdir;
1691: } else {
1692: $ulsdir = $dir_root.'/'.$ulsdir;
1693: }
1.399 raeburn 1694: }
1.489.2.23 raeburn 1695: if ($ulsdir =~m{/\.\./}) {
1696: &Failure($client,"refused\n",$userinput);
1697: return 1;
1698: }
1699: my $islocal;
1700: my @machine_ids = &Apache::lonnet::current_machine_ids();
1701: if (grep(/^\Q$clientname\E$/,@machine_ids)) {
1702: $islocal = 1;
1703: }
1.399 raeburn 1704: my $obs;
1705: my $rights;
1706: my $ulsout='';
1707: my $ulsfn;
1708: if (-e $ulsdir) {
1709: if(-d $ulsdir) {
1.489.2.23 raeburn 1710: unless (($getpropath) || ($getuserdir) ||
1.489.2.28 raeburn 1711: ($ulsdir =~ m{^/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
1712: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/userfiles}) ||
1713: (($ulsdir =~ m{^/home/httpd/html/priv/$LONCAPA::match_domain}) && ($islocal))) {
1.489.2.23 raeburn 1714: &Failure($client,"refused\n",$userinput);
1715: return 1;
1716: }
1.399 raeburn 1717: if (opendir(LSDIR,$ulsdir)) {
1718: while ($ulsfn=readdir(LSDIR)) {
1719: undef($obs);
1720: undef($rights);
1721: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1722: #We do some obsolete checking here
1723: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1724: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1725: my @obsolete=<FILE>;
1726: foreach my $obsolete (@obsolete) {
1727: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1728: if($obsolete =~ m|(<copyright>)(default)|) {
1729: $rights = 1;
1730: }
1731: }
1732: }
1733: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1734: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1735: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1736: $ulsout.= &escape($tmp).':';
1737: }
1738: closedir(LSDIR);
1739: }
1740: } else {
1.489.2.23 raeburn 1741: unless (($getpropath) || ($getuserdir) ||
1.489.2.28 raeburn 1742: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) ||
1743: ($ulsdir =~ m{^/home/httpd/html/(?:res|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/}) ||
1744: (($ulsdir =~ m{^/home/httpd/html/priv/$LONCAPA::match_domain/$LONCAPA::match_name/}) && ($islocal))) {
1.489.2.23 raeburn 1745: &Failure($client,"refused\n",$userinput);
1746: return 1;
1747: }
1.399 raeburn 1748: my @ulsstats=stat($ulsdir);
1749: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1750: }
1751: } else {
1752: $ulsout='no_such_dir';
1.400 raeburn 1753: }
1754: if ($ulsout eq '') { $ulsout='empty'; }
1755: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1756: return 1;
1.399 raeburn 1757: }
1758: ®ister_handler("ls3", \&ls3_handler, 0, 1, 0);
1.280 matthew 1759:
1.477 raeburn 1760: sub read_lonnet_global {
1761: my ($cmd,$tail,$client) = @_;
1762: my $userinput = "$cmd:$tail";
1763: my $requested = &Apache::lonnet::thaw_unescape($tail);
1764: my $result;
1.480 raeburn 1765: my %packagevars = (
1766: spareid => \%Apache::lonnet::spareid,
1767: perlvar => \%Apache::lonnet::perlvar,
1768: );
1769: my %limit_to = (
1770: perlvar => {
1771: lonOtherAuthen => 1,
1772: lonBalancer => 1,
1773: lonVersion => 1,
1774: lonSysEMail => 1,
1775: lonHostID => 1,
1776: lonRole => 1,
1777: lonDefDomain => 1,
1778: lonLoadLim => 1,
1779: lonUserLoadLim => 1,
1780: }
1781: );
1.477 raeburn 1782: if (ref($requested) eq 'HASH') {
1783: foreach my $what (keys(%{$requested})) {
1784: my $response;
1.480 raeburn 1785: my $items = {};
1786: if (exists($packagevars{$what})) {
1787: if (ref($limit_to{$what}) eq 'HASH') {
1788: foreach my $varname (keys(%{$packagevars{$what}})) {
1789: if ($limit_to{$what}{$varname}) {
1790: $items->{$varname} = $packagevars{$what}{$varname};
1791: }
1792: }
1793: } else {
1794: $items = $packagevars{$what};
1.477 raeburn 1795: }
1.480 raeburn 1796: if ($what eq 'perlvar') {
1797: if (!exists($packagevars{$what}{'lonBalancer'})) {
1.489.2.43 raeburn 1798: if ($dist =~ /^(centos|rhes|fedora|scientific|oracle|rocky|alma)/) {
1.480 raeburn 1799: my $othervarref=LONCAPA::Configuration::read_conf('httpd.conf');
1800: if (ref($othervarref) eq 'HASH') {
1801: $items->{'lonBalancer'} = $othervarref->{'lonBalancer'};
1802: }
1803: }
1804: }
1.477 raeburn 1805: }
1.480 raeburn 1806: $response = &Apache::lonnet::freeze_escape($items);
1.477 raeburn 1807: }
1.478 raeburn 1808: $result .= &escape($what).'='.$response.'&';
1.477 raeburn 1809: }
1810: }
1811: $result =~ s/\&$//;
1812: &Reply($client,\$result,$userinput);
1813: return 1;
1814: }
1815: ®ister_handler("readlonnetglobal", \&read_lonnet_global, 0, 1, 0);
1816:
1.479 raeburn 1817: sub server_devalidatecache_handler {
1818: my ($cmd,$tail,$client) = @_;
1819: my $userinput = "$cmd:$tail";
1.489.2.9 raeburn 1820: my $items = &unescape($tail);
1821: my @cached = split(/\&/,$items);
1822: foreach my $key (@cached) {
1823: if ($key =~ /:/) {
1824: my ($name,$id) = map { &unescape($_); } split(/:/,$key);
1825: &Apache::lonnet::devalidate_cache_new($name,$id);
1826: }
1827: }
1.479 raeburn 1828: my $result = 'ok';
1829: &Reply($client,\$result,$userinput);
1830: return 1;
1831: }
1.481 raeburn 1832: ®ister_handler("devalidatecache", \&server_devalidatecache_handler, 0, 1, 0);
1.479 raeburn 1833:
1.410 raeburn 1834: sub server_timezone_handler {
1835: my ($cmd,$tail,$client) = @_;
1836: my $userinput = "$cmd:$tail";
1837: my $timezone;
1838: my $clockfile = '/etc/sysconfig/clock'; # Fedora/CentOS/SuSE
1839: my $tzfile = '/etc/timezone'; # Debian/Ubuntu
1840: if (-e $clockfile) {
1841: if (open(my $fh,"<$clockfile")) {
1842: while (<$fh>) {
1843: next if (/^[\#\s]/);
1844: if (/^(?:TIME)?ZONE\s*=\s*['"]?\s*([\w\/]+)/) {
1845: $timezone = $1;
1846: last;
1847: }
1848: }
1849: close($fh);
1850: }
1851: } elsif (-e $tzfile) {
1852: if (open(my $fh,"<$tzfile")) {
1853: $timezone = <$fh>;
1854: close($fh);
1855: chomp($timezone);
1856: if ($timezone =~ m{^Etc/(\w+)$}) {
1857: $timezone = $1;
1858: }
1859: }
1860: }
1861: &Reply($client,\$timezone,$userinput); # This supports debug logging.
1862: return 1;
1863: }
1864: ®ister_handler("servertimezone", \&server_timezone_handler, 0, 1, 0);
1865:
1.413 raeburn 1866: sub server_loncaparev_handler {
1867: my ($cmd,$tail,$client) = @_;
1868: my $userinput = "$cmd:$tail";
1869: &Reply($client,\$perlvar{'lonVersion'},$userinput);
1870: return 1;
1871: }
1872: ®ister_handler("serverloncaparev", \&server_loncaparev_handler, 0, 1, 0);
1873:
1.448 raeburn 1874: sub server_homeID_handler {
1875: my ($cmd,$tail,$client) = @_;
1876: my $userinput = "$cmd:$tail";
1877: &Reply($client,\$perlvar{'lonHostID'},$userinput);
1878: return 1;
1879: }
1880: ®ister_handler("serverhomeID", \&server_homeID_handler, 0, 1, 0);
1881:
1.471 raeburn 1882: sub server_distarch_handler {
1883: my ($cmd,$tail,$client) = @_;
1884: my $userinput = "$cmd:$tail";
1885: my $reply = &distro_and_arch();
1886: &Reply($client,\$reply,$userinput);
1887: return 1;
1888: }
1889: ®ister_handler("serverdistarch", \&server_distarch_handler, 0, 1, 0);
1890:
1.218 foxr 1891: # Process a reinit request. Reinit requests that either
1892: # lonc or lond be reinitialized so that an updated
1893: # host.tab or domain.tab can be processed.
1894: #
1895: # Parameters:
1896: # $cmd - the actual keyword that invoked us.
1897: # $tail - the tail of the request that invoked us.
1898: # $client - File descriptor connected to the client
1899: # Returns:
1900: # 1 - Ok to continue processing.
1901: # 0 - Program should exit
1902: # Implicit output:
1903: # a reply is sent to the client.
1904: #
1905: sub reinit_process_handler {
1906: my ($cmd, $tail, $client) = @_;
1907:
1908: my $userinput = "$cmd:$tail";
1909:
1910: my $cert = &GetCertificate($userinput);
1911: if(&ValidManager($cert)) {
1912: chomp($userinput);
1913: my $reply = &ReinitProcess($userinput);
1.387 albertel 1914: &Reply( $client, \$reply, $userinput);
1.218 foxr 1915: } else {
1916: &Failure( $client, "refused\n", $userinput);
1917: }
1918: return 1;
1919: }
1920: ®ister_handler("reinit", \&reinit_process_handler, 1, 0, 1);
1921:
1922: # Process the editing script for a table edit operation.
1923: # the editing operation must be encrypted and requested by
1924: # a manager host.
1925: #
1926: # Parameters:
1927: # $cmd - the actual keyword that invoked us.
1928: # $tail - the tail of the request that invoked us.
1929: # $client - File descriptor connected to the client
1930: # Returns:
1931: # 1 - Ok to continue processing.
1932: # 0 - Program should exit
1933: # Implicit output:
1934: # a reply is sent to the client.
1935: #
1936: sub edit_table_handler {
1937: my ($command, $tail, $client) = @_;
1938:
1939: my $userinput = "$command:$tail";
1940:
1941: my $cert = &GetCertificate($userinput);
1942: if(&ValidManager($cert)) {
1943: my($filetype, $script) = split(/:/, $tail);
1944: if (($filetype eq "hosts") ||
1945: ($filetype eq "domain")) {
1946: if($script ne "") {
1947: &Reply($client, # BUGBUG - EditFile
1948: &EditFile($userinput), # could fail.
1949: $userinput);
1950: } else {
1951: &Failure($client,"refused\n",$userinput);
1952: }
1953: } else {
1954: &Failure($client,"refused\n",$userinput);
1955: }
1956: } else {
1957: &Failure($client,"refused\n",$userinput);
1958: }
1959: return 1;
1960: }
1.263 albertel 1961: ®ister_handler("edit", \&edit_table_handler, 1, 0, 1);
1.218 foxr 1962:
1.220 foxr 1963: #
1964: # Authenticate a user against the LonCAPA authentication
1965: # database. Note that there are several authentication
1966: # possibilities:
1967: # - unix - The user can be authenticated against the unix
1968: # password file.
1969: # - internal - The user can be authenticated against a purely
1970: # internal per user password file.
1971: # - kerberos - The user can be authenticated against either a kerb4 or kerb5
1972: # ticket granting authority.
1973: # - user - The person tailoring LonCAPA can supply a user authentication
1974: # mechanism that is per system.
1975: #
1976: # Parameters:
1977: # $cmd - The command that got us here.
1978: # $tail - Tail of the command (remaining parameters).
1979: # $client - File descriptor connected to client.
1980: # Returns
1981: # 0 - Requested to exit, caller should shut down.
1982: # 1 - Continue processing.
1983: # Implicit inputs:
1984: # The authentication systems describe above have their own forms of implicit
1985: # input into the authentication process that are described above.
1986: #
1987: sub authenticate_handler {
1988: my ($cmd, $tail, $client) = @_;
1989:
1990:
1991: # Regenerate the full input line
1992:
1993: my $userinput = $cmd.":".$tail;
1994:
1995: # udom - User's domain.
1996: # uname - Username.
1997: # upass - User's password.
1.396 raeburn 1998: # checkdefauth - Pass to validate_user() to try authentication
1999: # with default auth type(s) if no user account.
1.447 raeburn 2000: # clientcancheckhost - Passed by clients with functionality in lonauth.pm
2001: # to check if session can be hosted.
1.220 foxr 2002:
1.447 raeburn 2003: my ($udom, $uname, $upass, $checkdefauth, $clientcancheckhost)=split(/:/,$tail);
1.399 raeburn 2004: &Debug(" Authenticate domain = $udom, user = $uname, password = $upass, checkdefauth = $checkdefauth");
1.220 foxr 2005: chomp($upass);
2006: $upass=&unescape($upass);
2007:
1.396 raeburn 2008: my $pwdcorrect = &validate_user($udom,$uname,$upass,$checkdefauth);
1.220 foxr 2009: if($pwdcorrect) {
1.447 raeburn 2010: my $canhost = 1;
2011: unless ($clientcancheckhost) {
1.448 raeburn 2012: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
2013: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1.452 raeburn 2014: my @intdoms;
2015: my $internet_names = &Apache::lonnet::get_internet_names($clientname);
2016: if (ref($internet_names) eq 'ARRAY') {
2017: @intdoms = @{$internet_names};
2018: }
1.448 raeburn 2019: unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
1.447 raeburn 2020: my ($remote,$hosted);
2021: my $remotesession = &get_usersession_config($udom,'remotesession');
2022: if (ref($remotesession) eq 'HASH') {
1.489.2.32 raeburn 2023: $remote = $remotesession->{'remote'};
1.447 raeburn 2024: }
1.448 raeburn 2025: my $hostedsession = &get_usersession_config($clienthomedom,'hostedsession');
1.447 raeburn 2026: if (ref($hostedsession) eq 'HASH') {
2027: $hosted = $hostedsession->{'hosted'};
2028: }
1.449 raeburn 2029: my $loncaparev = $clientversion;
2030: if ($loncaparev eq '') {
2031: $loncaparev = $Apache::lonnet::loncaparevs{$clientname};
2032: }
1.448 raeburn 2033: $canhost = &Apache::lonnet::can_host_session($udom,$clientname,
1.449 raeburn 2034: $loncaparev,
1.447 raeburn 2035: $remote,$hosted);
2036: }
2037: }
2038: if ($canhost) {
2039: &Reply( $client, "authorized\n", $userinput);
2040: } else {
2041: &Reply( $client, "not_allowed_to_host\n", $userinput);
2042: }
1.220 foxr 2043: #
2044: # Bad credentials: Failed to authorize
2045: #
2046: } else {
2047: &Failure( $client, "non_authorized\n", $userinput);
2048: }
2049:
2050: return 1;
2051: }
1.263 albertel 2052: ®ister_handler("auth", \&authenticate_handler, 1, 1, 0);
1.214 foxr 2053:
1.222 foxr 2054: #
2055: # Change a user's password. Note that this function is complicated by
2056: # the fact that a user may be authenticated in more than one way:
2057: # At present, we are not able to change the password for all types of
2058: # authentication methods. Only for:
2059: # unix - unix password or shadow passoword style authentication.
2060: # local - Locally written authentication mechanism.
2061: # For now, kerb4 and kerb5 password changes are not supported and result
2062: # in an error.
2063: # FUTURE WORK:
2064: # Support kerberos passwd changes?
2065: # Parameters:
2066: # $cmd - The command that got us here.
2067: # $tail - Tail of the command (remaining parameters).
2068: # $client - File descriptor connected to client.
2069: # Returns
2070: # 0 - Requested to exit, caller should shut down.
2071: # 1 - Continue processing.
2072: # Implicit inputs:
2073: # The authentication systems describe above have their own forms of implicit
2074: # input into the authentication process that are described above.
2075: sub change_password_handler {
2076: my ($cmd, $tail, $client) = @_;
2077:
2078: my $userinput = $cmd.":".$tail; # Reconstruct client's string.
2079:
2080: #
2081: # udom - user's domain.
2082: # uname - Username.
2083: # upass - Current password.
2084: # npass - New password.
1.346 raeburn 2085: # context - Context in which this was called
2086: # (preferences or reset_by_email).
1.428 raeburn 2087: # lonhost - HostID of server where request originated
1.222 foxr 2088:
1.428 raeburn 2089: my ($udom,$uname,$upass,$npass,$context,$lonhost)=split(/:/,$tail);
1.222 foxr 2090:
2091: $upass=&unescape($upass);
2092: $npass=&unescape($npass);
2093: &Debug("Trying to change password for $uname");
2094:
2095: # First require that the user can be authenticated with their
1.346 raeburn 2096: # old password unless context was 'reset_by_email':
2097:
1.428 raeburn 2098: my ($validated,$failure);
1.346 raeburn 2099: if ($context eq 'reset_by_email') {
1.428 raeburn 2100: if ($lonhost eq '') {
2101: $failure = 'invalid_client';
2102: } else {
2103: $validated = 1;
2104: }
1.346 raeburn 2105: } else {
2106: $validated = &validate_user($udom, $uname, $upass);
2107: }
1.222 foxr 2108: if($validated) {
2109: my $realpasswd = &get_auth_type($udom, $uname); # Defined since authd.
2110: my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
1.489.2.33 raeburn 2111: my $notunique;
1.222 foxr 2112: if ($howpwd eq 'internal') {
2113: &Debug("internal auth");
1.489.2.21 raeburn 2114: my $ncpass = &hash_passwd($udom,$npass);
1.489.2.33 raeburn 2115: my (undef,$method,@rest) = split(/!/,$contentpwd);
2116: if ($method eq 'bcrypt') {
2117: my %passwdconf = &Apache::lonnet::get_passwdconf($udom);
2118: if (($passwdconf{'numsaved'}) && ($passwdconf{'numsaved'} =~ /^\d+$/)) {
2119: my @oldpasswds;
2120: my $userpath = &propath($udom,$uname);
2121: my $fullpath = $userpath.'/oldpasswds';
2122: if (-d $userpath) {
2123: my @oldfiles;
2124: if (-e $fullpath) {
2125: if (opendir(my $dir,$fullpath)) {
2126: (@oldfiles) = grep(/^\d+$/,readdir($dir));
2127: closedir($dir);
2128: }
2129: if (@oldfiles) {
2130: @oldfiles = sort { $b <=> $a } (@oldfiles);
2131: my $numremoved = 0;
2132: for (my $i=0; $i<@oldfiles; $i++) {
2133: if ($i>=$passwdconf{'numsaved'}) {
2134: if (-f "$fullpath/$oldfiles[$i]") {
2135: if (unlink("$fullpath/$oldfiles[$i]")) {
2136: $numremoved ++;
2137: }
2138: }
2139: } elsif (open(my $fh,'<',"$fullpath/$oldfiles[$i]")) {
2140: while (my $line = <$fh>) {
2141: push(@oldpasswds,$line);
2142: }
2143: close($fh);
2144: }
2145: }
2146: if ($numremoved) {
2147: &logthis("unlinked $numremoved old password files for $uname:$udom");
2148: }
2149: }
2150: }
2151: push(@oldpasswds,$contentpwd);
2152: foreach my $item (@oldpasswds) {
2153: my (undef,$method,@rest) = split(/!/,$item);
2154: if ($method eq 'bcrypt') {
2155: my $result = &hash_passwd($udom,$npass,@rest);
2156: if ($result eq $item) {
2157: $notunique = 1;
2158: last;
2159: }
2160: }
2161: }
2162: unless ($notunique) {
2163: unless (-e $fullpath) {
2164: if (&mkpath("$fullpath/")) {
2165: chmod(0700,$fullpath);
2166: }
2167: }
2168: if (-d $fullpath) {
2169: my $now = time;
2170: if (open(my $fh,'>',"$fullpath/$now")) {
2171: print $fh $contentpwd;
2172: close($fh);
2173: chmod(0400,"$fullpath/$now");
2174: }
2175: }
2176: }
2177: }
2178: }
2179: }
2180: if ($notunique) {
2181: my $msg="Result of password change for $uname:$udom - password matches one used before";
2182: if ($lonhost) {
2183: $msg .= " - request originated from: $lonhost";
2184: }
2185: &logthis($msg);
2186: &Reply($client, "prioruse\n", $userinput);
2187: } elsif (&rewrite_password_file($udom, $uname, "internal:$ncpass")) {
1.428 raeburn 2188: my $msg="Result of password change for $uname: pwchange_success";
2189: if ($lonhost) {
2190: $msg .= " - request originated from: $lonhost";
2191: }
2192: &logthis($msg);
1.489.2.21 raeburn 2193: &update_passwd_history($uname,$udom,$howpwd,$context);
1.222 foxr 2194: &Reply($client, "ok\n", $userinput);
2195: } else {
2196: &logthis("Unable to open $uname passwd "
2197: ."to change password");
2198: &Failure( $client, "non_authorized\n",$userinput);
2199: }
1.346 raeburn 2200: } elsif ($howpwd eq 'unix' && $context ne 'reset_by_email') {
1.287 foxr 2201: my $result = &change_unix_password($uname, $npass);
1.489.2.21 raeburn 2202: if ($result eq 'ok') {
2203: &update_passwd_history($uname,$udom,$howpwd,$context);
2204: }
1.222 foxr 2205: &logthis("Result of password change for $uname: ".
1.287 foxr 2206: $result);
1.387 albertel 2207: &Reply($client, \$result, $userinput);
1.222 foxr 2208: } else {
2209: # this just means that the current password mode is not
2210: # one we know how to change (e.g the kerberos auth modes or
2211: # locally written auth handler).
2212: #
2213: &Failure( $client, "auth_mode_error\n", $userinput);
2214: }
1.224 foxr 2215: } else {
1.428 raeburn 2216: if ($failure eq '') {
2217: $failure = 'non_authorized';
2218: }
2219: &Failure( $client, "$failure\n", $userinput);
1.222 foxr 2220: }
2221:
2222: return 1;
2223: }
1.263 albertel 2224: ®ister_handler("passwd", \&change_password_handler, 1, 1, 0);
1.222 foxr 2225:
1.489.2.21 raeburn 2226: sub hash_passwd {
2227: my ($domain,$plainpass,@rest) = @_;
2228: my ($salt,$cost);
2229: if (@rest) {
2230: $cost = $rest[0];
2231: # salt is first 22 characters, base-64 encoded by bcrypt
2232: my $plainsalt = substr($rest[1],0,22);
2233: $salt = Crypt::Eksblowfish::Bcrypt::de_base64($plainsalt);
2234: } else {
1.489.2.26 raeburn 2235: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
2236: my $defaultcost = $domdefaults{'intauth_cost'};
1.489.2.21 raeburn 2237: if (($defaultcost eq '') || ($defaultcost =~ /D/)) {
2238: $cost = 10;
2239: } else {
2240: $cost = $defaultcost;
2241: }
2242: # Generate random 16-octet base64 salt
2243: $salt = "";
2244: $salt .= pack("C", int rand(256)) for 1..16;
2245: }
2246: my $hash = &Crypt::Eksblowfish::Bcrypt::bcrypt_hash({
2247: key_nul => 1,
2248: cost => $cost,
2249: salt => $salt,
2250: }, Digest::SHA::sha512(Encode::encode('UTF-8',$plainpass)));
2251:
2252: my $result = join("!", "", "bcrypt", sprintf("%02d",$cost),
2253: &Crypt::Eksblowfish::Bcrypt::en_base64($salt).
2254: &Crypt::Eksblowfish::Bcrypt::en_base64($hash));
2255: return $result;
2256: }
2257:
1.225 foxr 2258: #
2259: # Create a new user. User in this case means a lon-capa user.
2260: # The user must either already exist in some authentication realm
2261: # like kerberos or the /etc/passwd. If not, a user completely local to
2262: # this loncapa system is created.
2263: #
2264: # Parameters:
2265: # $cmd - The command that got us here.
2266: # $tail - Tail of the command (remaining parameters).
2267: # $client - File descriptor connected to client.
2268: # Returns
2269: # 0 - Requested to exit, caller should shut down.
2270: # 1 - Continue processing.
2271: # Implicit inputs:
2272: # The authentication systems describe above have their own forms of implicit
2273: # input into the authentication process that are described above.
2274: sub add_user_handler {
2275:
2276: my ($cmd, $tail, $client) = @_;
2277:
2278:
2279: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2280: my $userinput = $cmd.":".$tail; # Reconstruct the full request line.
2281:
2282: &Debug("cmd =".$cmd." $udom =".$udom." uname=".$uname);
2283:
2284:
2285: if($udom eq $currentdomainid) { # Reject new users for other domains...
2286:
2287: my $oldumask=umask(0077);
2288: chomp($npass);
2289: $npass=&unescape($npass);
2290: my $passfilename = &password_path($udom, $uname);
2291: &Debug("Password file created will be:".$passfilename);
2292: if (-e $passfilename) {
2293: &Failure( $client, "already_exists\n", $userinput);
2294: } else {
2295: my $fperror='';
1.264 albertel 2296: if (!&mkpath($passfilename)) {
2297: $fperror="error: ".($!+0)." mkdir failed while attempting "
2298: ."makeuser";
1.225 foxr 2299: }
2300: unless ($fperror) {
1.489.2.21 raeburn 2301: my $result=&make_passwd_file($uname,$udom,$umode,$npass,
2302: $passfilename,'makeuser');
1.390 raeburn 2303: &Reply($client,\$result, $userinput); #BUGBUG - could be fail
1.225 foxr 2304: } else {
1.387 albertel 2305: &Failure($client, \$fperror, $userinput);
1.225 foxr 2306: }
2307: }
2308: umask($oldumask);
2309: } else {
2310: &Failure($client, "not_right_domain\n",
2311: $userinput); # Even if we are multihomed.
2312:
2313: }
2314: return 1;
2315:
2316: }
2317: ®ister_handler("makeuser", \&add_user_handler, 1, 1, 0);
2318:
2319: #
2320: # Change the authentication method of a user. Note that this may
2321: # also implicitly change the user's password if, for example, the user is
2322: # joining an existing authentication realm. Known authentication realms at
2323: # this time are:
2324: # internal - Purely internal password file (only loncapa knows this user)
2325: # local - Institutionally written authentication module.
2326: # unix - Unix user (/etc/passwd with or without /etc/shadow).
2327: # kerb4 - kerberos version 4
2328: # kerb5 - kerberos version 5
2329: #
2330: # Parameters:
2331: # $cmd - The command that got us here.
2332: # $tail - Tail of the command (remaining parameters).
2333: # $client - File descriptor connected to client.
2334: # Returns
2335: # 0 - Requested to exit, caller should shut down.
2336: # 1 - Continue processing.
2337: # Implicit inputs:
2338: # The authentication systems describe above have their own forms of implicit
2339: # input into the authentication process that are described above.
1.287 foxr 2340: # NOTE:
2341: # This is also used to change the authentication credential values (e.g. passwd).
2342: #
1.225 foxr 2343: #
2344: sub change_authentication_handler {
2345:
2346: my ($cmd, $tail, $client) = @_;
2347:
2348: my $userinput = "$cmd:$tail"; # Reconstruct user input.
2349:
2350: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2351: &Debug("cmd = ".$cmd." domain= ".$udom."uname =".$uname." umode= ".$umode);
2352: if ($udom ne $currentdomainid) {
2353: &Failure( $client, "not_right_domain\n", $client);
2354: } else {
2355:
2356: chomp($npass);
2357:
2358: $npass=&unescape($npass);
1.261 foxr 2359: my $oldauth = &get_auth_type($udom, $uname); # Get old auth info.
1.225 foxr 2360: my $passfilename = &password_path($udom, $uname);
2361: if ($passfilename) { # Not allowed to create a new user!!
1.287 foxr 2362: # If just changing the unix passwd. need to arrange to run
1.489.2.8 raeburn 2363: # passwd since otherwise make_passwd_file will fail as
2364: # creation of unix authenticated users is no longer supported
2365: # except from the command line, when running make_domain_coordinator.pl
1.287 foxr 2366:
2367: if(($oldauth =~/^unix/) && ($umode eq "unix")) {
2368: my $result = &change_unix_password($uname, $npass);
2369: &logthis("Result of password change for $uname: ".$result);
2370: if ($result eq "ok") {
1.489.2.21 raeburn 2371: &update_passwd_history($uname,$udom,$umode,'changeuserauth');
1.390 raeburn 2372: &Reply($client, \$result);
1.288 albertel 2373: } else {
1.387 albertel 2374: &Failure($client, \$result);
1.287 foxr 2375: }
1.288 albertel 2376: } else {
1.489.2.21 raeburn 2377: my $result=&make_passwd_file($uname,$udom,$umode,$npass,
2378: $passfilename,'changeuserauth');
1.287 foxr 2379: #
2380: # If the current auth mode is internal, and the old auth mode was
2381: # unix, or krb*, and the user is an author for this domain,
2382: # re-run manage_permissions for that role in order to be able
2383: # to take ownership of the construction space back to www:www
2384: #
1.489.2.8 raeburn 2385:
2386:
1.387 albertel 2387: &Reply($client, \$result, $userinput);
1.261 foxr 2388: }
2389:
2390:
1.225 foxr 2391: } else {
1.251 foxr 2392: &Failure($client, "non_authorized\n", $userinput); # Fail the user now.
1.225 foxr 2393: }
2394: }
2395: return 1;
2396: }
2397: ®ister_handler("changeuserauth", \&change_authentication_handler, 1,1, 0);
2398:
1.489.2.21 raeburn 2399: sub update_passwd_history {
2400: my ($uname,$udom,$umode,$context) = @_;
2401: my $proname=&propath($udom,$uname);
2402: my $now = time;
2403: if (open(my $fh,">>$proname/passwd.log")) {
2404: print $fh "$now:$umode:$context\n";
2405: close($fh);
2406: }
2407: return;
2408: }
2409:
1.489.2.43.2. (raeburn 2410:): sub inst_unamemap_check {
2411:): my ($cmd, $tail, $client) = @_;
2412:): my $userinput = "$cmd:$tail";
2413:): my %rulecheck;
2414:): my $outcome;
2415:): my ($udom,$uname,@rules) = split(/:/,$tail);
2416:): $udom = &unescape($udom);
2417:): $uname = &unescape($uname);
2418:): @rules = map {&unescape($_);} (@rules);
2419:): eval {
2420:): local($SIG{__DIE__})='DEFAULT';
2421:): $outcome = &localenroll::unamemap_check($udom,$uname,\@rules,\%rulecheck);
2422:): };
2423:): if (!$@) {
2424:): if ($outcome eq 'ok') {
2425:): my $result='';
2426:): foreach my $key (keys(%rulecheck)) {
2427:): $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
2428:): }
2429:): &Reply($client,\$result,$userinput);
2430:): } else {
2431:): &Reply($client,"error\n", $userinput);
2432:): }
2433:): } else {
2434:): &Failure($client,"unknown_cmd\n",$userinput);
2435:): }
2436:): }
2437:): ®ister_handler("instunamemapcheck",\&inst_unamemap_check,0,1,0);
2438:):
2439:):
1.225 foxr 2440: #
2441: # Determines if this is the home server for a user. The home server
2442: # for a user will have his/her lon-capa passwd file. Therefore all we need
2443: # to do is determine if this file exists.
2444: #
2445: # Parameters:
2446: # $cmd - The command that got us here.
2447: # $tail - Tail of the command (remaining parameters).
2448: # $client - File descriptor connected to client.
2449: # Returns
2450: # 0 - Requested to exit, caller should shut down.
2451: # 1 - Continue processing.
2452: # Implicit inputs:
2453: # The authentication systems describe above have their own forms of implicit
2454: # input into the authentication process that are described above.
2455: #
2456: sub is_home_handler {
2457: my ($cmd, $tail, $client) = @_;
2458:
2459: my $userinput = "$cmd:$tail";
2460:
2461: my ($udom,$uname)=split(/:/,$tail);
2462: chomp($uname);
2463: my $passfile = &password_filename($udom, $uname);
2464: if($passfile) {
2465: &Reply( $client, "found\n", $userinput);
2466: } else {
2467: &Failure($client, "not_found\n", $userinput);
2468: }
2469: return 1;
2470: }
2471: ®ister_handler("home", \&is_home_handler, 0,1,0);
2472:
2473: #
1.434 www 2474: # Process an update request for a resource.
2475: # A resource has been modified that we hold a subscription to.
1.225 foxr 2476: # If the resource is not local, then we must update, or at least invalidate our
2477: # cached copy of the resource.
2478: # Parameters:
2479: # $cmd - The command that got us here.
2480: # $tail - Tail of the command (remaining parameters).
2481: # $client - File descriptor connected to client.
2482: # Returns
2483: # 0 - Requested to exit, caller should shut down.
2484: # 1 - Continue processing.
2485: # Implicit inputs:
2486: # The authentication systems describe above have their own forms of implicit
2487: # input into the authentication process that are described above.
2488: #
2489: sub update_resource_handler {
2490:
2491: my ($cmd, $tail, $client) = @_;
2492:
2493: my $userinput = "$cmd:$tail";
2494:
2495: my $fname= $tail; # This allows interactive testing
2496:
2497:
2498: my $ownership=ishome($fname);
2499: if ($ownership eq 'not_owner') {
2500: if (-e $fname) {
1.434 www 2501: # Delete preview file, if exists
2502: unlink("$fname.tmp");
2503: # Get usage stats
1.225 foxr 2504: my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
2505: $atime,$mtime,$ctime,$blksize,$blocks)=stat($fname);
2506: my $now=time;
2507: my $since=$now-$atime;
1.434 www 2508: # If the file has not been used within lonExpire seconds,
2509: # unsubscribe from it and delete local copy
1.225 foxr 2510: if ($since>$perlvar{'lonExpire'}) {
1.365 albertel 2511: my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
1.308 albertel 2512: &devalidate_meta_cache($fname);
1.225 foxr 2513: unlink("$fname");
1.334 albertel 2514: unlink("$fname.meta");
1.225 foxr 2515: } else {
1.434 www 2516: # Yes, this is in active use. Get a fresh copy. Since it might be in
2517: # very active use and huge (like a movie), copy it to "in.transfer" filename first.
1.225 foxr 2518: my $transname="$fname.in.transfer";
1.365 albertel 2519: my $remoteurl=&Apache::lonnet::reply("sub:$fname","$clientname");
1.225 foxr 2520: my $response;
1.455 www 2521: # FIXME: cannot replicate files that take more than two minutes to transfer?
2522: # alarm(120);
2523: # FIXME: this should use the LWP mechanism, not internal alarms.
2524: alarm(1200);
1.225 foxr 2525: {
2526: my $ua=new LWP::UserAgent;
2527: my $request=new HTTP::Request('GET',"$remoteurl");
2528: $response=$ua->request($request,$transname);
2529: }
2530: alarm(0);
2531: if ($response->is_error()) {
1.489.2.30 raeburn 2532: my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
2533: &devalidate_meta_cache($fname);
2534: if (-e $transname) {
2535: unlink($transname);
2536: }
2537: unlink($fname);
1.225 foxr 2538: my $message=$response->status_line;
2539: &logthis("LWP GET: $message for $fname ($remoteurl)");
2540: } else {
2541: if ($remoteurl!~/\.meta$/) {
1.455 www 2542: # FIXME: isn't there an internal LWP mechanism for this?
1.225 foxr 2543: alarm(120);
2544: {
2545: my $ua=new LWP::UserAgent;
2546: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2547: my $mresponse=$ua->request($mrequest,$fname.'.meta');
2548: if ($mresponse->is_error()) {
2549: unlink($fname.'.meta');
2550: }
2551: }
2552: alarm(0);
2553: }
1.434 www 2554: # we successfully transfered, copy file over to real name
1.225 foxr 2555: rename($transname,$fname);
1.308 albertel 2556: &devalidate_meta_cache($fname);
1.225 foxr 2557: }
2558: }
2559: &Reply( $client, "ok\n", $userinput);
2560: } else {
2561: &Failure($client, "not_found\n", $userinput);
2562: }
2563: } else {
2564: &Failure($client, "rejected\n", $userinput);
2565: }
2566: return 1;
2567: }
2568: ®ister_handler("update", \&update_resource_handler, 0 ,1, 0);
2569:
1.308 albertel 2570: sub devalidate_meta_cache {
2571: my ($url) = @_;
2572: use Cache::Memcached;
2573: my $memcache = new Cache::Memcached({'servers'=>['127.0.0.1:11211']});
1.365 albertel 2574: $url = &Apache::lonnet::declutter($url);
1.308 albertel 2575: $url =~ s-\.meta$--;
2576: my $id = &escape('meta:'.$url);
2577: $memcache->delete($id);
2578: }
2579:
1.225 foxr 2580: #
1.226 foxr 2581: # Fetch a user file from a remote server to the user's home directory
2582: # userfiles subdir.
1.225 foxr 2583: # Parameters:
2584: # $cmd - The command that got us here.
2585: # $tail - Tail of the command (remaining parameters).
2586: # $client - File descriptor connected to client.
2587: # Returns
2588: # 0 - Requested to exit, caller should shut down.
2589: # 1 - Continue processing.
2590: #
2591: sub fetch_user_file_handler {
2592:
2593: my ($cmd, $tail, $client) = @_;
2594:
2595: my $userinput = "$cmd:$tail";
2596: my $fname = $tail;
1.232 foxr 2597: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
1.225 foxr 2598: my $udir=&propath($udom,$uname).'/userfiles';
2599: unless (-e $udir) {
2600: mkdir($udir,0770);
2601: }
1.232 foxr 2602: Debug("fetch user file for $fname");
1.225 foxr 2603: if (-e $udir) {
2604: $ufile=~s/^[\.\~]+//;
1.232 foxr 2605:
2606: # IF necessary, create the path right down to the file.
2607: # Note that any regular files in the way of this path are
2608: # wiped out to deal with some earlier folly of mine.
2609:
1.267 raeburn 2610: if (!&mkpath($udir.'/'.$ufile)) {
1.264 albertel 2611: &Failure($client, "unable_to_create\n", $userinput);
1.232 foxr 2612: }
2613:
1.225 foxr 2614: my $destname=$udir.'/'.$ufile;
2615: my $transname=$udir.'/'.$ufile.'.in.transit';
1.476 raeburn 2616: my $clientprotocol=$Apache::lonnet::protocol{$clientname};
2617: $clientprotocol = 'http' if ($clientprotocol ne 'https');
1.486 raeburn 2618: my $clienthost = &Apache::lonnet::hostname($clientname);
2619: my $remoteurl=$clientprotocol.'://'.$clienthost.'/userfiles/'.$fname;
1.225 foxr 2620: my $response;
1.232 foxr 2621: Debug("Remote URL : $remoteurl Transfername $transname Destname: $destname");
1.225 foxr 2622: alarm(120);
2623: {
2624: my $ua=new LWP::UserAgent;
2625: my $request=new HTTP::Request('GET',"$remoteurl");
2626: $response=$ua->request($request,$transname);
2627: }
2628: alarm(0);
2629: if ($response->is_error()) {
2630: unlink($transname);
2631: my $message=$response->status_line;
2632: &logthis("LWP GET: $message for $fname ($remoteurl)");
2633: &Failure($client, "failed\n", $userinput);
2634: } else {
1.232 foxr 2635: Debug("Renaming $transname to $destname");
1.225 foxr 2636: if (!rename($transname,$destname)) {
2637: &logthis("Unable to move $transname to $destname");
2638: unlink($transname);
2639: &Failure($client, "failed\n", $userinput);
2640: } else {
1.489.2.2 raeburn 2641: if ($fname =~ /^default.+\.(page|sequence)$/) {
2642: my ($major,$minor) = split(/\./,$clientversion);
2643: if (($major < 2) || ($major == 2 && $minor < 11)) {
2644: my $now = time;
2645: &Apache::lonnet::do_cache_new('crschange',$udom.'_'.$uname,$now,600);
2646: my $key = &escape('internal.contentchange');
2647: my $what = "$key=$now";
2648: my $hashref = &tie_user_hash($udom,$uname,'environment',
2649: &GDBM_WRCREAT(),"P",$what);
2650: if ($hashref) {
2651: $hashref->{$key}=$now;
2652: if (!&untie_user_hash($hashref)) {
2653: &logthis("error: ".($!+0)." untie (GDBM) failed ".
2654: "when updating internal.contentchange");
2655: }
2656: }
2657: }
2658: }
1.225 foxr 2659: &Reply($client, "ok\n", $userinput);
2660: }
2661: }
2662: } else {
2663: &Failure($client, "not_home\n", $userinput);
2664: }
2665: return 1;
2666: }
2667: ®ister_handler("fetchuserfile", \&fetch_user_file_handler, 0, 1, 0);
2668:
1.226 foxr 2669: #
2670: # Remove a file from a user's home directory userfiles subdirectory.
2671: # Parameters:
2672: # cmd - the Lond request keyword that got us here.
2673: # tail - the part of the command past the keyword.
2674: # client- File descriptor connected with the client.
2675: #
2676: # Returns:
2677: # 1 - Continue processing.
2678: sub remove_user_file_handler {
2679: my ($cmd, $tail, $client) = @_;
2680:
2681: my ($fname) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2682:
2683: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
2684: if ($ufile =~m|/\.\./|) {
2685: # any files paths with /../ in them refuse
2686: # to deal with
2687: &Failure($client, "refused\n", "$cmd:$tail");
2688: } else {
2689: my $udir = &propath($udom,$uname);
2690: if (-e $udir) {
2691: my $file=$udir.'/userfiles/'.$ufile;
2692: if (-e $file) {
1.253 foxr 2693: #
2694: # If the file is a regular file unlink is fine...
1.489.2.19 raeburn 2695: # However it's possible the client wants a dir
2696: # removed, in which case rmdir is more appropriate
2697: # Note: rmdir will only remove an empty directory.
1.253 foxr 2698: #
1.240 banghart 2699: if (-f $file){
1.241 albertel 2700: unlink($file);
1.489.2.19 raeburn 2701: # for html files remove the associated .bak file
2702: # which may have been created by the editor.
2703: if ($ufile =~ m{^((docs|supplemental)/(?:\d+|default)/\d+(?:|/.+)/)[^/]+\.x?html?$}i) {
2704: my $path = $1;
2705: if (-e $file.'.bak') {
2706: unlink($file.'.bak');
2707: }
2708: }
1.241 albertel 2709: } elsif(-d $file) {
2710: rmdir($file);
1.240 banghart 2711: }
1.226 foxr 2712: if (-e $file) {
1.253 foxr 2713: # File is still there after we deleted it ?!?
2714:
1.226 foxr 2715: &Failure($client, "failed\n", "$cmd:$tail");
2716: } else {
2717: &Reply($client, "ok\n", "$cmd:$tail");
2718: }
2719: } else {
2720: &Failure($client, "not_found\n", "$cmd:$tail");
2721: }
2722: } else {
2723: &Failure($client, "not_home\n", "$cmd:$tail");
2724: }
2725: }
2726: return 1;
2727: }
2728: ®ister_handler("removeuserfile", \&remove_user_file_handler, 0,1,0);
2729:
1.236 albertel 2730: #
2731: # make a directory in a user's home directory userfiles subdirectory.
2732: # Parameters:
2733: # cmd - the Lond request keyword that got us here.
2734: # tail - the part of the command past the keyword.
2735: # client- File descriptor connected with the client.
2736: #
2737: # Returns:
2738: # 1 - Continue processing.
2739: sub mkdir_user_file_handler {
2740: my ($cmd, $tail, $client) = @_;
2741:
2742: my ($dir) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2743: $dir=&unescape($dir);
2744: my ($udom,$uname,$ufile) = ($dir =~ m|^([^/]+)/([^/]+)/(.+)$|);
2745: if ($ufile =~m|/\.\./|) {
2746: # any files paths with /../ in them refuse
2747: # to deal with
2748: &Failure($client, "refused\n", "$cmd:$tail");
2749: } else {
2750: my $udir = &propath($udom,$uname);
2751: if (-e $udir) {
1.264 albertel 2752: my $newdir=$udir.'/userfiles/'.$ufile.'/';
2753: if (!&mkpath($newdir)) {
2754: &Failure($client, "failed\n", "$cmd:$tail");
1.236 albertel 2755: }
1.264 albertel 2756: &Reply($client, "ok\n", "$cmd:$tail");
1.236 albertel 2757: } else {
2758: &Failure($client, "not_home\n", "$cmd:$tail");
2759: }
2760: }
2761: return 1;
2762: }
2763: ®ister_handler("mkdiruserfile", \&mkdir_user_file_handler, 0,1,0);
2764:
1.237 albertel 2765: #
2766: # rename a file in a user's home directory userfiles subdirectory.
2767: # Parameters:
2768: # cmd - the Lond request keyword that got us here.
2769: # tail - the part of the command past the keyword.
2770: # client- File descriptor connected with the client.
2771: #
2772: # Returns:
2773: # 1 - Continue processing.
2774: sub rename_user_file_handler {
2775: my ($cmd, $tail, $client) = @_;
2776:
2777: my ($udom,$uname,$old,$new) = split(/:/, $tail);
2778: $old=&unescape($old);
2779: $new=&unescape($new);
2780: if ($new =~m|/\.\./| || $old =~m|/\.\./|) {
2781: # any files paths with /../ in them refuse to deal with
2782: &Failure($client, "refused\n", "$cmd:$tail");
2783: } else {
2784: my $udir = &propath($udom,$uname);
2785: if (-e $udir) {
2786: my $oldfile=$udir.'/userfiles/'.$old;
2787: my $newfile=$udir.'/userfiles/'.$new;
2788: if (-e $newfile) {
2789: &Failure($client, "exists\n", "$cmd:$tail");
2790: } elsif (! -e $oldfile) {
2791: &Failure($client, "not_found\n", "$cmd:$tail");
2792: } else {
2793: if (!rename($oldfile,$newfile)) {
2794: &Failure($client, "failed\n", "$cmd:$tail");
2795: } else {
2796: &Reply($client, "ok\n", "$cmd:$tail");
2797: }
2798: }
2799: } else {
2800: &Failure($client, "not_home\n", "$cmd:$tail");
2801: }
2802: }
2803: return 1;
2804: }
2805: ®ister_handler("renameuserfile", \&rename_user_file_handler, 0,1,0);
2806:
1.227 foxr 2807: #
1.382 albertel 2808: # Checks if the specified user has an active session on the server
2809: # return ok if so, not_found if not
2810: #
2811: # Parameters:
2812: # cmd - The request keyword that dispatched to tus.
2813: # tail - The tail of the request (colon separated parameters).
2814: # client - Filehandle open on the client.
2815: # Return:
2816: # 1.
2817: sub user_has_session_handler {
2818: my ($cmd, $tail, $client) = @_;
2819:
2820: my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail));
2821:
2822: opendir(DIR,$perlvar{'lonIDsDir'});
2823: my $filename;
2824: while ($filename=readdir(DIR)) {
2825: last if ($filename=~/^\Q$uname\E_\d+_\Q$udom\E_/);
2826: }
2827: if ($filename) {
2828: &Reply($client, "ok\n", "$cmd:$tail");
2829: } else {
2830: &Failure($client, "not_found\n", "$cmd:$tail");
2831: }
2832: return 1;
2833:
2834: }
2835: ®ister_handler("userhassession", \&user_has_session_handler, 0,1,0);
2836:
1.489.2.43.2. (raeburn 2837:): sub del_usersession_handler {
2838:): my ($cmd, $tail, $client) = @_;
2839:):
2840:): my $result;
2841:): my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail));
2842:): if (($udom =~ /^$LONCAPA::match_domain$/) && ($uname =~ /^$LONCAPA::match_username$/)) {
2843:): my $lonidsdir = $perlvar{'lonIDsDir'};
2844:): if (-d $lonidsdir) {
2845:): if (opendir(DIR,$lonidsdir)) {
2846:): my $filename;
2847:): while ($filename=readdir(DIR)) {
2848:): if ($filename=~/^\Q$uname\E_\d+_\Q$udom\E_/) {
2849:): if (tie(my %oldenv,'GDBM_File',"$lonidsdir/$filename",
2850:): &GDBM_READER(),0640)) {
2851:): my $linkedfile;
2852:): if (exists($oldenv{'user.linkedenv'})) {
2853:): $linkedfile = $oldenv{'user.linkedenv'};
2854:): }
2855:): untie(%oldenv);
2856:): $result = unlink("$lonidsdir/$filename");
2857:): if ($result) {
2858:): if ($linkedfile =~ /^[a-f0-9]+_linked$/) {
2859:): if (-l "$lonidsdir/$linkedfile.id") {
2860:): unlink("$lonidsdir/$linkedfile.id");
2861:): }
2862:): }
2863:): }
2864:): } else {
2865:): $result = unlink("$lonidsdir/$filename");
2866:): }
2867:): last;
2868:): }
2869:): }
2870:): }
2871:): }
2872:): if ($result == 1) {
2873:): &Reply($client, "$result\n", "$cmd:$tail");
2874:): } else {
2875:): &Reply($client, "not_found\n", "$cmd:$tail");
2876:): }
2877:): } else {
2878:): &Failure($client, "invalid_user\n", "$cmd:$tail");
2879:): }
2880:): return 1;
2881:): }
2882:):
2883:): ®ister_handler("delusersession", \&del_usersession_handler, 0,1,0);
2884:):
1.382 albertel 2885: #
1.263 albertel 2886: # Authenticate access to a user file by checking that the token the user's
2887: # passed also exists in their session file
1.227 foxr 2888: #
2889: # Parameters:
2890: # cmd - The request keyword that dispatched to tus.
2891: # tail - The tail of the request (colon separated parameters).
2892: # client - Filehandle open on the client.
2893: # Return:
2894: # 1.
2895: sub token_auth_user_file_handler {
2896: my ($cmd, $tail, $client) = @_;
2897:
2898: my ($fname, $session) = split(/:/, $tail);
2899:
2900: chomp($session);
1.393 raeburn 2901: my $reply="non_auth";
1.343 albertel 2902: my $file = $perlvar{'lonIDsDir'}.'/'.$session.'.id';
2903: if (open(ENVIN,"$file")) {
1.332 albertel 2904: flock(ENVIN,LOCK_SH);
1.343 albertel 2905: tie(my %disk_env,'GDBM_File',"$file",&GDBM_READER(),0640);
2906: if (exists($disk_env{"userfile.$fname"})) {
1.393 raeburn 2907: $reply="ok";
1.343 albertel 2908: } else {
2909: foreach my $envname (keys(%disk_env)) {
2910: if ($envname=~ m|^userfile\.\Q$fname\E|) {
1.393 raeburn 2911: $reply="ok";
1.343 albertel 2912: last;
2913: }
2914: }
1.227 foxr 2915: }
1.343 albertel 2916: untie(%disk_env);
1.227 foxr 2917: close(ENVIN);
1.387 albertel 2918: &Reply($client, \$reply, "$cmd:$tail");
1.227 foxr 2919: } else {
2920: &Failure($client, "invalid_token\n", "$cmd:$tail");
2921: }
2922: return 1;
2923:
2924: }
2925: ®ister_handler("tokenauthuserfile", \&token_auth_user_file_handler, 0,1,0);
1.229 foxr 2926:
2927: #
2928: # Unsubscribe from a resource.
2929: #
2930: # Parameters:
2931: # $cmd - The command that got us here.
2932: # $tail - Tail of the command (remaining parameters).
2933: # $client - File descriptor connected to client.
2934: # Returns
2935: # 0 - Requested to exit, caller should shut down.
2936: # 1 - Continue processing.
2937: #
2938: sub unsubscribe_handler {
2939: my ($cmd, $tail, $client) = @_;
2940:
2941: my $userinput= "$cmd:$tail";
2942:
2943: my ($fname) = split(/:/,$tail); # Split in case there's extrs.
2944:
2945: &Debug("Unsubscribing $fname");
2946: if (-e $fname) {
2947: &Debug("Exists");
2948: &Reply($client, &unsub($fname,$clientip), $userinput);
2949: } else {
2950: &Failure($client, "not_found\n", $userinput);
2951: }
2952: return 1;
2953: }
2954: ®ister_handler("unsub", \&unsubscribe_handler, 0, 1, 0);
1.263 albertel 2955:
1.230 foxr 2956: # Subscribe to a resource
2957: #
2958: # Parameters:
2959: # $cmd - The command that got us here.
2960: # $tail - Tail of the command (remaining parameters).
2961: # $client - File descriptor connected to client.
2962: # Returns
2963: # 0 - Requested to exit, caller should shut down.
2964: # 1 - Continue processing.
2965: #
2966: sub subscribe_handler {
2967: my ($cmd, $tail, $client)= @_;
2968:
2969: my $userinput = "$cmd:$tail";
2970:
2971: &Reply( $client, &subscribe($userinput,$clientip), $userinput);
2972:
2973: return 1;
2974: }
2975: ®ister_handler("sub", \&subscribe_handler, 0, 1, 0);
2976:
2977: #
1.379 albertel 2978: # Determine the latest version of a resource (it looks for the highest
2979: # past version and then returns that +1)
1.230 foxr 2980: #
2981: # Parameters:
2982: # $cmd - The command that got us here.
2983: # $tail - Tail of the command (remaining parameters).
1.379 albertel 2984: # (Should consist of an absolute path to a file)
1.230 foxr 2985: # $client - File descriptor connected to client.
2986: # Returns
2987: # 0 - Requested to exit, caller should shut down.
2988: # 1 - Continue processing.
2989: #
2990: sub current_version_handler {
2991: my ($cmd, $tail, $client) = @_;
2992:
2993: my $userinput= "$cmd:$tail";
2994:
2995: my $fname = $tail;
2996: &Reply( $client, ¤tversion($fname)."\n", $userinput);
2997: return 1;
2998:
2999: }
3000: ®ister_handler("currentversion", \¤t_version_handler, 0, 1, 0);
3001:
3002: # Make an entry in a user's activity log.
3003: #
3004: # Parameters:
3005: # $cmd - The command that got us here.
3006: # $tail - Tail of the command (remaining parameters).
3007: # $client - File descriptor connected to client.
3008: # Returns
3009: # 0 - Requested to exit, caller should shut down.
3010: # 1 - Continue processing.
3011: #
3012: sub activity_log_handler {
3013: my ($cmd, $tail, $client) = @_;
3014:
3015:
3016: my $userinput= "$cmd:$tail";
3017:
3018: my ($udom,$uname,$what)=split(/:/,$tail);
3019: chomp($what);
3020: my $proname=&propath($udom,$uname);
3021: my $now=time;
3022: my $hfh;
3023: if ($hfh=IO::File->new(">>$proname/activity.log")) {
3024: print $hfh "$now:$clientname:$what\n";
3025: &Reply( $client, "ok\n", $userinput);
3026: } else {
3027: &Failure($client, "error: ".($!+0)." IO::File->new Failed "
3028: ."while attempting log\n",
3029: $userinput);
3030: }
3031:
3032: return 1;
3033: }
1.263 albertel 3034: ®ister_handler("log", \&activity_log_handler, 0, 1, 0);
1.230 foxr 3035:
3036: #
3037: # Put a namespace entry in a user profile hash.
3038: # My druthers would be for this to be an encrypted interaction too.
3039: # anything that might be an inadvertent covert channel about either
3040: # user authentication or user personal information....
3041: #
3042: # Parameters:
3043: # $cmd - The command that got us here.
3044: # $tail - Tail of the command (remaining parameters).
3045: # $client - File descriptor connected to client.
3046: # Returns
3047: # 0 - Requested to exit, caller should shut down.
3048: # 1 - Continue processing.
3049: #
3050: sub put_user_profile_entry {
3051: my ($cmd, $tail, $client) = @_;
1.229 foxr 3052:
1.230 foxr 3053: my $userinput = "$cmd:$tail";
3054:
1.242 raeburn 3055: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
1.230 foxr 3056: if ($namespace ne 'roles') {
3057: chomp($what);
3058: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3059: &GDBM_WRCREAT(),"P",$what);
3060: if($hashref) {
3061: my @pairs=split(/\&/,$what);
3062: foreach my $pair (@pairs) {
3063: my ($key,$value)=split(/=/,$pair);
3064: $hashref->{$key}=$value;
3065: }
1.311 albertel 3066: if (&untie_user_hash($hashref)) {
1.230 foxr 3067: &Reply( $client, "ok\n", $userinput);
3068: } else {
3069: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
3070: "while attempting put\n",
3071: $userinput);
3072: }
3073: } else {
1.316 albertel 3074: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.230 foxr 3075: "while attempting put\n", $userinput);
3076: }
3077: } else {
3078: &Failure( $client, "refused\n", $userinput);
3079: }
3080:
3081: return 1;
3082: }
3083: ®ister_handler("put", \&put_user_profile_entry, 0, 1, 0);
3084:
1.283 albertel 3085: # Put a piece of new data in hash, returns error if entry already exists
3086: # Parameters:
3087: # $cmd - The command that got us here.
3088: # $tail - Tail of the command (remaining parameters).
3089: # $client - File descriptor connected to client.
3090: # Returns
3091: # 0 - Requested to exit, caller should shut down.
3092: # 1 - Continue processing.
3093: #
3094: sub newput_user_profile_entry {
3095: my ($cmd, $tail, $client) = @_;
3096:
3097: my $userinput = "$cmd:$tail";
3098:
3099: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
3100: if ($namespace eq 'roles') {
3101: &Failure( $client, "refused\n", $userinput);
3102: return 1;
3103: }
3104:
3105: chomp($what);
3106:
3107: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3108: &GDBM_WRCREAT(),"N",$what);
3109: if(!$hashref) {
1.316 albertel 3110: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.283 albertel 3111: "while attempting put\n", $userinput);
3112: return 1;
3113: }
3114:
3115: my @pairs=split(/\&/,$what);
3116: foreach my $pair (@pairs) {
3117: my ($key,$value)=split(/=/,$pair);
3118: if (exists($hashref->{$key})) {
1.489.2.17 raeburn 3119: if (!&untie_user_hash($hashref)) {
3120: &logthis("error: ".($!+0)." untie (GDBM) failed ".
3121: "while attempting newput - early out as key exists");
3122: }
1.283 albertel 3123: &Failure($client, "key_exists: ".$key."\n",$userinput);
3124: return 1;
3125: }
3126: }
3127:
3128: foreach my $pair (@pairs) {
3129: my ($key,$value)=split(/=/,$pair);
3130: $hashref->{$key}=$value;
3131: }
3132:
1.311 albertel 3133: if (&untie_user_hash($hashref)) {
1.283 albertel 3134: &Reply( $client, "ok\n", $userinput);
3135: } else {
3136: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
3137: "while attempting put\n",
3138: $userinput);
3139: }
3140: return 1;
3141: }
3142: ®ister_handler("newput", \&newput_user_profile_entry, 0, 1, 0);
3143:
1.230 foxr 3144: #
3145: # Increment a profile entry in the user history file.
3146: # The history contains keyword value pairs. In this case,
3147: # The value itself is a pair of numbers. The first, the current value
3148: # the second an increment that this function applies to the current
3149: # value.
3150: #
3151: # Parameters:
3152: # $cmd - The command that got us here.
3153: # $tail - Tail of the command (remaining parameters).
3154: # $client - File descriptor connected to client.
3155: # Returns
3156: # 0 - Requested to exit, caller should shut down.
3157: # 1 - Continue processing.
3158: #
3159: sub increment_user_value_handler {
3160: my ($cmd, $tail, $client) = @_;
3161:
3162: my $userinput = "$cmd:$tail";
3163:
3164: my ($udom,$uname,$namespace,$what) =split(/:/,$tail);
3165: if ($namespace ne 'roles') {
3166: chomp($what);
3167: my $hashref = &tie_user_hash($udom, $uname,
3168: $namespace, &GDBM_WRCREAT(),
3169: "P",$what);
3170: if ($hashref) {
3171: my @pairs=split(/\&/,$what);
3172: foreach my $pair (@pairs) {
3173: my ($key,$value)=split(/=/,$pair);
1.284 raeburn 3174: $value = &unescape($value);
1.230 foxr 3175: # We could check that we have a number...
3176: if (! defined($value) || $value eq '') {
3177: $value = 1;
3178: }
3179: $hashref->{$key}+=$value;
1.284 raeburn 3180: if ($namespace eq 'nohist_resourcetracker') {
3181: if ($hashref->{$key} < 0) {
3182: $hashref->{$key} = 0;
3183: }
3184: }
1.230 foxr 3185: }
1.311 albertel 3186: if (&untie_user_hash($hashref)) {
1.230 foxr 3187: &Reply( $client, "ok\n", $userinput);
3188: } else {
3189: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
3190: "while attempting inc\n", $userinput);
3191: }
3192: } else {
3193: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3194: "while attempting inc\n", $userinput);
3195: }
3196: } else {
3197: &Failure($client, "refused\n", $userinput);
3198: }
3199:
3200: return 1;
3201: }
3202: ®ister_handler("inc", \&increment_user_value_handler, 0, 1, 0);
3203:
3204: #
3205: # Put a new role for a user. Roles are LonCAPA's packaging of permissions.
3206: # Each 'role' a user has implies a set of permissions. Adding a new role
3207: # for a person grants the permissions packaged with that role
3208: # to that user when the role is selected.
3209: #
3210: # Parameters:
3211: # $cmd - The command string (rolesput).
3212: # $tail - The remainder of the request line. For rolesput this
3213: # consists of a colon separated list that contains:
3214: # The domain and user that is granting the role (logged).
3215: # The domain and user that is getting the role.
3216: # The roles being granted as a set of & separated pairs.
3217: # each pair a key value pair.
3218: # $client - File descriptor connected to the client.
3219: # Returns:
3220: # 0 - If the daemon should exit
3221: # 1 - To continue processing.
3222: #
3223: #
3224: sub roles_put_handler {
3225: my ($cmd, $tail, $client) = @_;
3226:
3227: my $userinput = "$cmd:$tail";
3228:
3229: my ( $exedom, $exeuser, $udom, $uname, $what) = split(/:/,$tail);
3230:
3231:
3232: my $namespace='roles';
3233: chomp($what);
3234: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3235: &GDBM_WRCREAT(), "P",
3236: "$exedom:$exeuser:$what");
3237: #
3238: # Log the attempt to set a role. The {}'s here ensure that the file
3239: # handle is open for the minimal amount of time. Since the flush
3240: # is done on close this improves the chances the log will be an un-
3241: # corrupted ordered thing.
3242: if ($hashref) {
1.261 foxr 3243: my $pass_entry = &get_auth_type($udom, $uname);
3244: my ($auth_type,$pwd) = split(/:/, $pass_entry);
3245: $auth_type = $auth_type.":";
1.230 foxr 3246: my @pairs=split(/\&/,$what);
3247: foreach my $pair (@pairs) {
3248: my ($key,$value)=split(/=/,$pair);
3249: &manage_permissions($key, $udom, $uname,
1.260 foxr 3250: $auth_type);
1.230 foxr 3251: $hashref->{$key}=$value;
3252: }
1.311 albertel 3253: if (&untie_user_hash($hashref)) {
1.230 foxr 3254: &Reply($client, "ok\n", $userinput);
3255: } else {
3256: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3257: "while attempting rolesput\n", $userinput);
3258: }
3259: } else {
3260: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3261: "while attempting rolesput\n", $userinput);
3262: }
3263: return 1;
3264: }
3265: ®ister_handler("rolesput", \&roles_put_handler, 1,1,0); # Encoded client only.
3266:
3267: #
1.231 foxr 3268: # Deletes (removes) a role for a user. This is equivalent to removing
3269: # a permissions package associated with the role from the user's profile.
3270: #
3271: # Parameters:
3272: # $cmd - The command (rolesdel)
3273: # $tail - The remainder of the request line. This consists
3274: # of:
3275: # The domain and user requesting the change (logged)
3276: # The domain and user being changed.
3277: # The roles being revoked. These are shipped to us
3278: # as a bunch of & separated role name keywords.
3279: # $client - The file handle open on the client.
3280: # Returns:
3281: # 1 - Continue processing
3282: # 0 - Exit.
3283: #
3284: sub roles_delete_handler {
3285: my ($cmd, $tail, $client) = @_;
3286:
3287: my $userinput = "$cmd:$tail";
3288:
3289: my ($exedom,$exeuser,$udom,$uname,$what)=split(/:/,$tail);
3290: &Debug("cmd = ".$cmd." exedom= ".$exedom."user = ".$exeuser." udom=".$udom.
3291: "what = ".$what);
3292: my $namespace='roles';
3293: chomp($what);
3294: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3295: &GDBM_WRCREAT(), "D",
3296: "$exedom:$exeuser:$what");
3297:
3298: if ($hashref) {
3299: my @rolekeys=split(/\&/,$what);
3300:
3301: foreach my $key (@rolekeys) {
3302: delete $hashref->{$key};
3303: }
1.315 albertel 3304: if (&untie_user_hash($hashref)) {
1.231 foxr 3305: &Reply($client, "ok\n", $userinput);
3306: } else {
3307: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3308: "while attempting rolesdel\n", $userinput);
3309: }
3310: } else {
3311: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3312: "while attempting rolesdel\n", $userinput);
3313: }
3314:
3315: return 1;
3316: }
3317: ®ister_handler("rolesdel", \&roles_delete_handler, 1,1, 0); # Encoded client only
3318:
3319: # Unencrypted get from a user's profile database. See
3320: # GetProfileEntryEncrypted for a version that does end-to-end encryption.
3321: # This function retrieves a keyed item from a specific named database in the
3322: # user's directory.
3323: #
3324: # Parameters:
3325: # $cmd - Command request keyword (get).
3326: # $tail - Tail of the command. This is a colon separated list
3327: # consisting of the domain and username that uniquely
3328: # identifies the profile,
3329: # The 'namespace' which selects the gdbm file to
3330: # do the lookup in,
3331: # & separated list of keys to lookup. Note that
3332: # the values are returned as an & separated list too.
3333: # $client - File descriptor open on the client.
3334: # Returns:
3335: # 1 - Continue processing.
3336: # 0 - Exit.
3337: #
3338: sub get_profile_entry {
3339: my ($cmd, $tail, $client) = @_;
3340:
3341: my $userinput= "$cmd:$tail";
3342:
3343: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3344: chomp($what);
1.255 foxr 3345:
1.390 raeburn 3346:
1.255 foxr 3347: my $replystring = read_profile($udom, $uname, $namespace, $what);
3348: my ($first) = split(/:/,$replystring);
3349: if($first ne "error") {
1.387 albertel 3350: &Reply($client, \$replystring, $userinput);
1.231 foxr 3351: } else {
1.255 foxr 3352: &Failure($client, $replystring." while attempting get\n", $userinput);
1.231 foxr 3353: }
3354: return 1;
1.255 foxr 3355:
3356:
1.231 foxr 3357: }
3358: ®ister_handler("get", \&get_profile_entry, 0,1,0);
3359:
3360: #
3361: # Process the encrypted get request. Note that the request is sent
3362: # in clear, but the reply is encrypted. This is a small covert channel:
3363: # information about the sensitive keys is given to the snooper. Just not
3364: # information about the values of the sensitive key. Hmm if I wanted to
3365: # know these I'd snoop for the egets. Get the profile item names from them
3366: # and then issue a get for them since there's no enforcement of the
3367: # requirement of an encrypted get for particular profile items. If I
3368: # were re-doing this, I'd force the request to be encrypted as well as the
3369: # reply. I'd also just enforce encrypted transactions for all gets since
3370: # that would prevent any covert channel snooping.
3371: #
3372: # Parameters:
3373: # $cmd - Command keyword of request (eget).
1.489.2.32 raeburn 3374: # $tail - Tail of the command. See GetProfileEntry
3375: # for more information about this.
1.231 foxr 3376: # $client - File open on the client.
3377: # Returns:
3378: # 1 - Continue processing
3379: # 0 - server should exit.
3380: sub get_profile_entry_encrypted {
3381: my ($cmd, $tail, $client) = @_;
3382:
3383: my $userinput = "$cmd:$tail";
3384:
1.339 albertel 3385: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
1.231 foxr 3386: chomp($what);
1.255 foxr 3387: my $qresult = read_profile($udom, $uname, $namespace, $what);
3388: my ($first) = split(/:/, $qresult);
3389: if($first ne "error") {
3390:
3391: if ($cipher) {
3392: my $cmdlength=length($qresult);
3393: $qresult.=" ";
3394: my $encqresult='';
3395: for(my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
3396: $encqresult.= unpack("H16",
3397: $cipher->encrypt(substr($qresult,
3398: $encidx,
3399: 8)));
3400: }
3401: &Reply( $client, "enc:$cmdlength:$encqresult\n", $userinput);
3402: } else {
1.231 foxr 3403: &Failure( $client, "error:no_key\n", $userinput);
3404: }
3405: } else {
1.255 foxr 3406: &Failure($client, "$qresult while attempting eget\n", $userinput);
3407:
1.231 foxr 3408: }
3409:
3410: return 1;
3411: }
1.255 foxr 3412: ®ister_handler("eget", \&get_profile_entry_encrypted, 0, 1, 0);
1.263 albertel 3413:
1.231 foxr 3414: #
3415: # Deletes a key in a user profile database.
3416: #
3417: # Parameters:
3418: # $cmd - Command keyword (del).
3419: # $tail - Command tail. IN this case a colon
3420: # separated list containing:
3421: # The domain and user that identifies uniquely
3422: # the identity of the user.
3423: # The profile namespace (name of the profile
3424: # database file).
3425: # & separated list of keywords to delete.
3426: # $client - File open on client socket.
3427: # Returns:
3428: # 1 - Continue processing
3429: # 0 - Exit server.
3430: #
3431: #
3432: sub delete_profile_entry {
3433: my ($cmd, $tail, $client) = @_;
3434:
3435: my $userinput = "cmd:$tail";
3436:
3437: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3438: chomp($what);
3439: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3440: &GDBM_WRCREAT(),
3441: "D",$what);
3442: if ($hashref) {
3443: my @keys=split(/\&/,$what);
3444: foreach my $key (@keys) {
3445: delete($hashref->{$key});
3446: }
1.315 albertel 3447: if (&untie_user_hash($hashref)) {
1.231 foxr 3448: &Reply($client, "ok\n", $userinput);
3449: } else {
3450: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3451: "while attempting del\n", $userinput);
3452: }
3453: } else {
3454: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3455: "while attempting del\n", $userinput);
3456: }
3457: return 1;
3458: }
3459: ®ister_handler("del", \&delete_profile_entry, 0, 1, 0);
1.263 albertel 3460:
1.231 foxr 3461: #
3462: # List the set of keys that are defined in a profile database file.
3463: # A successful reply from this will contain an & separated list of
3464: # the keys.
3465: # Parameters:
3466: # $cmd - Command request (keys).
3467: # $tail - Remainder of the request, a colon separated
3468: # list containing domain/user that identifies the
3469: # user being queried, and the database namespace
3470: # (database filename essentially).
3471: # $client - File open on the client.
3472: # Returns:
3473: # 1 - Continue processing.
3474: # 0 - Exit the server.
3475: #
3476: sub get_profile_keys {
3477: my ($cmd, $tail, $client) = @_;
3478:
3479: my $userinput = "$cmd:$tail";
3480:
3481: my ($udom,$uname,$namespace)=split(/:/,$tail);
3482: my $qresult='';
3483: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3484: &GDBM_READER());
3485: if ($hashref) {
3486: foreach my $key (keys %$hashref) {
3487: $qresult.="$key&";
3488: }
1.315 albertel 3489: if (&untie_user_hash($hashref)) {
1.231 foxr 3490: $qresult=~s/\&$//;
1.387 albertel 3491: &Reply($client, \$qresult, $userinput);
1.231 foxr 3492: } else {
3493: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3494: "while attempting keys\n", $userinput);
3495: }
3496: } else {
3497: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3498: "while attempting keys\n", $userinput);
3499: }
3500:
3501: return 1;
3502: }
3503: ®ister_handler("keys", \&get_profile_keys, 0, 1, 0);
3504:
3505: #
3506: # Dump the contents of a user profile database.
3507: # Note that this constitutes a very large covert channel too since
3508: # the dump will return sensitive information that is not encrypted.
3509: # The naive security assumption is that the session negotiation ensures
3510: # our client is trusted and I don't believe that's assured at present.
3511: # Sure want badly to go to ssl or tls. Of course if my peer isn't really
3512: # a LonCAPA node they could have negotiated an encryption key too so >sigh<.
3513: #
3514: # Parameters:
3515: # $cmd - The command request keyword (currentdump).
3516: # $tail - Remainder of the request, consisting of a colon
3517: # separated list that has the domain/username and
3518: # the namespace to dump (database file).
3519: # $client - file open on the remote client.
3520: # Returns:
3521: # 1 - Continue processing.
3522: # 0 - Exit the server.
3523: #
3524: sub dump_profile_database {
3525: my ($cmd, $tail, $client) = @_;
3526:
3527: my $userinput = "$cmd:$tail";
3528:
3529: my ($udom,$uname,$namespace) = split(/:/,$tail);
3530: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3531: &GDBM_READER());
3532: if ($hashref) {
3533: # Structure of %data:
3534: # $data{$symb}->{$parameter}=$value;
3535: # $data{$symb}->{'v.'.$parameter}=$version;
3536: # since $parameter will be unescaped, we do not
3537: # have to worry about silly parameter names...
3538:
3539: my $qresult='';
3540: my %data = (); # A hash of anonymous hashes..
3541: while (my ($key,$value) = each(%$hashref)) {
3542: my ($v,$symb,$param) = split(/:/,$key);
3543: next if ($v eq 'version' || $symb eq 'keys');
3544: next if (exists($data{$symb}) &&
3545: exists($data{$symb}->{$param}) &&
3546: $data{$symb}->{'v.'.$param} > $v);
3547: $data{$symb}->{$param}=$value;
3548: $data{$symb}->{'v.'.$param}=$v;
3549: }
1.311 albertel 3550: if (&untie_user_hash($hashref)) {
1.231 foxr 3551: while (my ($symb,$param_hash) = each(%data)) {
3552: while(my ($param,$value) = each (%$param_hash)){
3553: next if ($param =~ /^v\./); # Ignore versions...
3554: #
3555: # Just dump the symb=value pairs separated by &
3556: #
3557: $qresult.=$symb.':'.$param.'='.$value.'&';
3558: }
3559: }
3560: chop($qresult);
1.387 albertel 3561: &Reply($client , \$qresult, $userinput);
1.231 foxr 3562: } else {
3563: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3564: "while attempting currentdump\n", $userinput);
3565: }
3566: } else {
3567: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3568: "while attempting currentdump\n", $userinput);
3569: }
3570:
3571: return 1;
3572: }
3573: ®ister_handler("currentdump", \&dump_profile_database, 0, 1, 0);
3574:
3575: #
3576: # Dump a profile database with an optional regular expression
3577: # to match against the keys. In this dump, no effort is made
3578: # to separate symb from version information. Presumably the
3579: # databases that are dumped by this command are of a different
3580: # structure. Need to look at this and improve the documentation of
3581: # both this and the currentdump handler.
3582: # Parameters:
3583: # $cmd - The command keyword.
3584: # $tail - All of the characters after the $cmd:
3585: # These are expected to be a colon
3586: # separated list containing:
3587: # domain/user - identifying the user.
3588: # namespace - identifying the database.
3589: # regexp - optional regular expression
3590: # that is matched against
3591: # database keywords to do
3592: # selective dumps.
1.488 raeburn 3593: # range - optional range of entries
3594: # e.g., 10-20 would return the
3595: # 10th to 19th items, etc.
1.231 foxr 3596: # $client - Channel open on the client.
3597: # Returns:
3598: # 1 - Continue processing.
3599: # Side effects:
3600: # response is written to $client.
3601: #
3602: sub dump_with_regexp {
3603: my ($cmd, $tail, $client) = @_;
3604:
1.489.2.4 raeburn 3605: my $res = LONCAPA::Lond::dump_with_regexp($tail, $clientversion);
1.231 foxr 3606:
1.489.2.4 raeburn 3607: if ($res =~ /^error:/) {
3608: &Failure($client, \$res, "$cmd:$tail");
1.231 foxr 3609: } else {
1.489.2.4 raeburn 3610: &Reply($client, \$res, "$cmd:$tail");
1.231 foxr 3611: }
3612:
3613: return 1;
3614: }
3615: ®ister_handler("dump", \&dump_with_regexp, 0, 1, 0);
3616:
1.489.2.43.2. (raeburn 3617:): #
3618:): # Process the encrypted dump request. Original call should
3619:): # be from lonnet::dump() with seventh arg ($encrypt) set to
3620:): # 1, to ensure that both request and response are encrypted.
3621:): #
3622:): # Parameters:
3623:): # $cmd - Command keyword of request (edump).
3624:): # $tail - Tail of the command.
3625:): # See &dump_with_regexp for more
3626:): # information about this.
3627:): # $client - File open on the client.
3628:): # Returns:
3629:): # 1 - Continue processing
3630:): # 0 - server should exit.
3631:): #
3632:):
3633:): sub encrypted_dump_with_regexp {
3634:): my ($cmd, $tail, $client) = @_;
3635:): my $res = LONCAPA::Lond::dump_with_regexp($tail, $clientversion);
3636:):
3637:): if ($res =~ /^error:/) {
3638:): Failure($client, \$res, "$cmd:$tail");
3639:): } else {
3640:): if ($cipher) {
3641:): my $cmdlength=length($res);
3642:): $res.=" ";
3643:): my $encres='';
3644:): for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
3645:): $encres.= unpack("H16",
3646:): $cipher->encrypt(substr($res,
3647:): $encidx,
3648:): 8)));
3649:): }
3650:): &Reply( $client,"enc:$cmdlength:$encres\n","$cmd:$tail");
3651:): } else {
3652:): &Failure( $client, "error:no_key\n","$cmd:$tail");
3653:): }
3654:): }
3655:): }
3656:): ®ister_handler("edump", \&encrypted_dump_with_regexp, 0, 1, 0);
3657:):
1.231 foxr 3658: # Store a set of key=value pairs associated with a versioned name.
3659: #
3660: # Parameters:
3661: # $cmd - Request command keyword.
3662: # $tail - Tail of the request. This is a colon
3663: # separated list containing:
3664: # domain/user - User and authentication domain.
3665: # namespace - Name of the database being modified
3666: # rid - Resource keyword to modify.
3667: # what - new value associated with rid.
1.489.2.17 raeburn 3668: # laststore - (optional) version=timestamp
3669: # for most recent transaction for rid
3670: # in namespace, when cstore was called
1.231 foxr 3671: #
3672: # $client - Socket open on the client.
3673: #
3674: #
3675: # Returns:
3676: # 1 (keep on processing).
3677: # Side-Effects:
3678: # Writes to the client
1.489.2.17 raeburn 3679: # Successful storage will cause either 'ok', or, if $laststore was included
3680: # in the tail of the request, and the version number for the last transaction
3681: # is larger than the version in $laststore, delay:$numtrans , where $numtrans
3682: # is the number of store evevnts recorded for rid in namespace since
3683: # lonnet::store() was called by the client.
3684: #
1.231 foxr 3685: sub store_handler {
3686: my ($cmd, $tail, $client) = @_;
3687:
3688: my $userinput = "$cmd:$tail";
3689:
1.489.2.17 raeburn 3690: chomp($tail);
3691: my ($udom,$uname,$namespace,$rid,$what,$laststore) =split(/:/,$tail);
1.231 foxr 3692: if ($namespace ne 'roles') {
3693:
3694: my @pairs=split(/\&/,$what);
3695: my $hashref = &tie_user_hash($udom, $uname, $namespace,
1.268 albertel 3696: &GDBM_WRCREAT(), "S",
1.231 foxr 3697: "$rid:$what");
3698: if ($hashref) {
3699: my $now = time;
1.489.2.17 raeburn 3700: my $numtrans;
3701: if ($laststore) {
3702: my ($previousversion,$previoustime) = split(/\=/,$laststore);
3703: my ($lastversion,$lasttime) = (0,0);
3704: $lastversion = $hashref->{"version:$rid"};
3705: if ($lastversion) {
3706: $lasttime = $hashref->{"$lastversion:$rid:timestamp"};
3707: }
3708: if (($previousversion) && ($previousversion !~ /\D/)) {
3709: if (($lastversion > $previousversion) && ($lasttime >= $previoustime)) {
3710: $numtrans = $lastversion - $previousversion;
3711: }
3712: } elsif ($lastversion) {
3713: $numtrans = $lastversion;
3714: }
3715: if ($numtrans) {
3716: $numtrans =~ s/D//g;
3717: }
3718: }
3719:
1.231 foxr 3720: $hashref->{"version:$rid"}++;
3721: my $version=$hashref->{"version:$rid"};
3722: my $allkeys='';
3723: foreach my $pair (@pairs) {
3724: my ($key,$value)=split(/=/,$pair);
3725: $allkeys.=$key.':';
3726: $hashref->{"$version:$rid:$key"}=$value;
3727: }
3728: $hashref->{"$version:$rid:timestamp"}=$now;
3729: $allkeys.='timestamp';
3730: $hashref->{"$version:keys:$rid"}=$allkeys;
1.311 albertel 3731: if (&untie_user_hash($hashref)) {
1.489.2.17 raeburn 3732: my $msg = 'ok';
3733: if ($numtrans) {
3734: $msg = 'delay:'.$numtrans;
3735: }
3736: &Reply($client, "$msg\n", $userinput);
1.231 foxr 3737: } else {
3738: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3739: "while attempting store\n", $userinput);
3740: }
3741: } else {
3742: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3743: "while attempting store\n", $userinput);
3744: }
3745: } else {
3746: &Failure($client, "refused\n", $userinput);
3747: }
3748:
3749: return 1;
3750: }
3751: ®ister_handler("store", \&store_handler, 0, 1, 0);
1.263 albertel 3752:
1.323 albertel 3753: # Modify a set of key=value pairs associated with a versioned name.
3754: #
3755: # Parameters:
3756: # $cmd - Request command keyword.
3757: # $tail - Tail of the request. This is a colon
3758: # separated list containing:
3759: # domain/user - User and authentication domain.
3760: # namespace - Name of the database being modified
3761: # rid - Resource keyword to modify.
3762: # v - Version item to modify
3763: # what - new value associated with rid.
3764: #
3765: # $client - Socket open on the client.
3766: #
3767: #
3768: # Returns:
3769: # 1 (keep on processing).
3770: # Side-Effects:
3771: # Writes to the client
3772: sub putstore_handler {
3773: my ($cmd, $tail, $client) = @_;
3774:
3775: my $userinput = "$cmd:$tail";
3776:
3777: my ($udom,$uname,$namespace,$rid,$v,$what) =split(/:/,$tail);
3778: if ($namespace ne 'roles') {
3779:
3780: chomp($what);
3781: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3782: &GDBM_WRCREAT(), "M",
3783: "$rid:$v:$what");
3784: if ($hashref) {
3785: my $now = time;
3786: my %data = &hash_extract($what);
3787: my @allkeys;
3788: while (my($key,$value) = each(%data)) {
3789: push(@allkeys,$key);
3790: $hashref->{"$v:$rid:$key"} = $value;
3791: }
3792: my $allkeys = join(':',@allkeys);
3793: $hashref->{"$v:keys:$rid"}=$allkeys;
3794:
3795: if (&untie_user_hash($hashref)) {
3796: &Reply($client, "ok\n", $userinput);
3797: } else {
3798: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3799: "while attempting store\n", $userinput);
3800: }
3801: } else {
3802: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3803: "while attempting store\n", $userinput);
3804: }
3805: } else {
3806: &Failure($client, "refused\n", $userinput);
3807: }
3808:
3809: return 1;
3810: }
3811: ®ister_handler("putstore", \&putstore_handler, 0, 1, 0);
3812:
3813: sub hash_extract {
3814: my ($str)=@_;
3815: my %hash;
3816: foreach my $pair (split(/\&/,$str)) {
3817: my ($key,$value)=split(/=/,$pair);
3818: $hash{$key}=$value;
3819: }
3820: return (%hash);
3821: }
3822: sub hash_to_str {
3823: my ($hash_ref)=@_;
3824: my $str;
3825: foreach my $key (keys(%$hash_ref)) {
3826: $str.=$key.'='.$hash_ref->{$key}.'&';
3827: }
3828: $str=~s/\&$//;
3829: return $str;
3830: }
3831:
1.231 foxr 3832: #
3833: # Dump out all versions of a resource that has key=value pairs associated
3834: # with it for each version. These resources are built up via the store
3835: # command.
3836: #
3837: # Parameters:
3838: # $cmd - Command keyword.
3839: # $tail - Remainder of the request which consists of:
3840: # domain/user - User and auth. domain.
3841: # namespace - name of resource database.
3842: # rid - Resource id.
3843: # $client - socket open on the client.
3844: #
3845: # Returns:
3846: # 1 indicating the caller should not yet exit.
3847: # Side-effects:
3848: # Writes a reply to the client.
3849: # The reply is a string of the following shape:
3850: # version=current&version:keys=k1:k2...&1:k1=v1&1:k2=v2...
3851: # Where the 1 above represents version 1.
3852: # this continues for all pairs of keys in all versions.
3853: #
3854: #
3855: #
3856: #
3857: sub restore_handler {
3858: my ($cmd, $tail, $client) = @_;
3859:
3860: my $userinput = "$cmd:$tail"; # Only used for logging purposes.
1.351 banghart 3861: my ($udom,$uname,$namespace,$rid) = split(/:/,$tail);
1.352 albertel 3862: $namespace=~s/\//\_/g;
1.350 albertel 3863: $namespace = &LONCAPA::clean_username($namespace);
1.349 albertel 3864:
1.231 foxr 3865: chomp($rid);
3866: my $qresult='';
1.309 albertel 3867: my $hashref = &tie_user_hash($udom, $uname, $namespace, &GDBM_READER());
3868: if ($hashref) {
3869: my $version=$hashref->{"version:$rid"};
1.231 foxr 3870: $qresult.="version=$version&";
3871: my $scope;
3872: for ($scope=1;$scope<=$version;$scope++) {
1.309 albertel 3873: my $vkeys=$hashref->{"$scope:keys:$rid"};
1.231 foxr 3874: my @keys=split(/:/,$vkeys);
3875: my $key;
3876: $qresult.="$scope:keys=$vkeys&";
3877: foreach $key (@keys) {
1.309 albertel 3878: $qresult.="$scope:$key=".$hashref->{"$scope:$rid:$key"}."&";
1.231 foxr 3879: }
3880: }
1.311 albertel 3881: if (&untie_user_hash($hashref)) {
1.231 foxr 3882: $qresult=~s/\&$//;
1.387 albertel 3883: &Reply( $client, \$qresult, $userinput);
1.231 foxr 3884: } else {
3885: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3886: "while attempting restore\n", $userinput);
3887: }
3888: } else {
3889: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3890: "while attempting restore\n", $userinput);
3891: }
3892:
3893: return 1;
3894:
3895:
3896: }
3897: ®ister_handler("restore", \&restore_handler, 0,1,0);
1.234 foxr 3898:
3899: #
1.324 raeburn 3900: # Add a chat message to a synchronous discussion board.
1.234 foxr 3901: #
3902: # Parameters:
3903: # $cmd - Request keyword.
3904: # $tail - Tail of the command. A colon separated list
3905: # containing:
3906: # cdom - Domain on which the chat board lives
1.324 raeburn 3907: # cnum - Course containing the chat board.
3908: # newpost - Body of the posting.
3909: # group - Optional group, if chat board is only
3910: # accessible in a group within the course
1.234 foxr 3911: # $client - Socket open on the client.
3912: # Returns:
3913: # 1 - Indicating caller should keep on processing.
3914: #
3915: # Side-effects:
3916: # writes a reply to the client.
3917: #
3918: #
3919: sub send_chat_handler {
3920: my ($cmd, $tail, $client) = @_;
3921:
3922:
3923: my $userinput = "$cmd:$tail";
3924:
1.324 raeburn 3925: my ($cdom,$cnum,$newpost,$group)=split(/\:/,$tail);
3926: &chat_add($cdom,$cnum,$newpost,$group);
1.234 foxr 3927: &Reply($client, "ok\n", $userinput);
3928:
3929: return 1;
3930: }
3931: ®ister_handler("chatsend", \&send_chat_handler, 0, 1, 0);
1.263 albertel 3932:
1.234 foxr 3933: #
1.324 raeburn 3934: # Retrieve the set of chat messages from a discussion board.
1.234 foxr 3935: #
3936: # Parameters:
3937: # $cmd - Command keyword that initiated the request.
3938: # $tail - Remainder of the request after the command
3939: # keyword. In this case a colon separated list of
3940: # chat domain - Which discussion board.
3941: # chat id - Discussion thread(?)
3942: # domain/user - Authentication domain and username
3943: # of the requesting person.
1.324 raeburn 3944: # group - Optional course group containing
3945: # the board.
1.234 foxr 3946: # $client - Socket open on the client program.
3947: # Returns:
3948: # 1 - continue processing
3949: # Side effects:
3950: # Response is written to the client.
3951: #
3952: sub retrieve_chat_handler {
3953: my ($cmd, $tail, $client) = @_;
3954:
3955:
3956: my $userinput = "$cmd:$tail";
3957:
1.324 raeburn 3958: my ($cdom,$cnum,$udom,$uname,$group)=split(/\:/,$tail);
1.234 foxr 3959: my $reply='';
1.324 raeburn 3960: foreach (&get_chat($cdom,$cnum,$udom,$uname,$group)) {
1.234 foxr 3961: $reply.=&escape($_).':';
3962: }
3963: $reply=~s/\:$//;
1.387 albertel 3964: &Reply($client, \$reply, $userinput);
1.234 foxr 3965:
3966:
3967: return 1;
3968: }
3969: ®ister_handler("chatretr", \&retrieve_chat_handler, 0, 1, 0);
3970:
3971: #
3972: # Initiate a query of an sql database. SQL query repsonses get put in
3973: # a file for later retrieval. This prevents sql query results from
3974: # bottlenecking the system. Note that with loncnew, perhaps this is
3975: # less of an issue since multiple outstanding requests can be concurrently
3976: # serviced.
3977: #
3978: # Parameters:
3979: # $cmd - COmmand keyword that initiated the request.
3980: # $tail - Remainder of the command after the keyword.
3981: # For this function, this consists of a query and
3982: # 3 arguments that are self-documentingly labelled
3983: # in the original arg1, arg2, arg3.
3984: # $client - Socket open on the client.
3985: # Return:
3986: # 1 - Indicating processing should continue.
3987: # Side-effects:
3988: # a reply is written to $client.
3989: #
3990: sub send_query_handler {
3991: my ($cmd, $tail, $client) = @_;
3992:
3993:
3994: my $userinput = "$cmd:$tail";
3995:
3996: my ($query,$arg1,$arg2,$arg3)=split(/\:/,$tail);
3997: $query=~s/\n*$//g;
1.489.2.27 raeburn 3998: if (($query eq 'usersearch') || ($query eq 'instdirsearch')) {
3999: my $usersearchconf = &get_usersearch_config($currentdomainid,'directorysrch');
4000: my $earlyout;
4001: if (ref($usersearchconf) eq 'HASH') {
4002: if ($currentdomainid eq $clienthomedom) {
4003: if ($query eq 'usersearch') {
4004: if ($usersearchconf->{'lcavailable'} eq '0') {
4005: $earlyout = 1;
4006: }
4007: } else {
4008: if ($usersearchconf->{'available'} eq '0') {
4009: $earlyout = 1;
4010: }
4011: }
4012: } else {
4013: if ($query eq 'usersearch') {
4014: if ($usersearchconf->{'lclocalonly'}) {
4015: $earlyout = 1;
4016: }
4017: } else {
4018: if ($usersearchconf->{'localonly'}) {
4019: $earlyout = 1;
4020: }
4021: }
4022: }
4023: }
4024: if ($earlyout) {
4025: &Reply($client, "query_not_authorized\n");
4026: return 1;
4027: }
4028: }
1.234 foxr 4029: &Reply($client, "". &sql_reply("$clientname\&$query".
4030: "\&$arg1"."\&$arg2"."\&$arg3")."\n",
4031: $userinput);
4032:
4033: return 1;
4034: }
4035: ®ister_handler("querysend", \&send_query_handler, 0, 1, 0);
4036:
4037: #
4038: # Add a reply to an sql query. SQL queries are done asyncrhonously.
4039: # The query is submitted via a "querysend" transaction.
4040: # There it is passed on to the lonsql daemon, queued and issued to
4041: # mysql.
4042: # This transaction is invoked when the sql transaction is complete
4043: # it stores the query results in flie and indicates query completion.
4044: # presumably local software then fetches this response... I'm guessing
4045: # the sequence is: lonc does a querysend, we ask lonsql to do it.
4046: # lonsql on completion of the query interacts with the lond of our
4047: # client to do a query reply storing two files:
4048: # - id - The results of the query.
4049: # - id.end - Indicating the transaction completed.
4050: # NOTE: id is a unique id assigned to the query and querysend time.
4051: # Parameters:
4052: # $cmd - Command keyword that initiated this request.
4053: # $tail - Remainder of the tail. In this case that's a colon
4054: # separated list containing the query Id and the
4055: # results of the query.
4056: # $client - Socket open on the client.
4057: # Return:
4058: # 1 - Indicating that we should continue processing.
4059: # Side effects:
4060: # ok written to the client.
4061: #
4062: sub reply_query_handler {
4063: my ($cmd, $tail, $client) = @_;
4064:
4065:
4066: my $userinput = "$cmd:$tail";
4067:
1.339 albertel 4068: my ($id,$reply)=split(/:/,$tail);
1.234 foxr 4069: my $store;
4070: my $execdir=$perlvar{'lonDaemons'};
4071: if ($store=IO::File->new(">$execdir/tmp/$id")) {
4072: $reply=~s/\&/\n/g;
4073: print $store $reply;
4074: close $store;
4075: my $store2=IO::File->new(">$execdir/tmp/$id.end");
4076: print $store2 "done\n";
4077: close $store2;
4078: &Reply($client, "ok\n", $userinput);
4079: } else {
4080: &Failure($client, "error: ".($!+0)
4081: ." IO::File->new Failed ".
4082: "while attempting queryreply\n", $userinput);
4083: }
4084:
4085:
4086: return 1;
4087: }
4088: ®ister_handler("queryreply", \&reply_query_handler, 0, 1, 0);
4089:
4090: #
4091: # Process the courseidput request. Not quite sure what this means
4092: # at the system level sense. It appears a gdbm file in the
4093: # /home/httpd/lonUsers/$domain/nohist_courseids is tied and
4094: # a set of entries made in that database.
4095: #
4096: # Parameters:
4097: # $cmd - The command keyword that initiated this request.
4098: # $tail - Tail of the command. In this case consists of a colon
4099: # separated list contaning the domain to apply this to and
4100: # an ampersand separated list of keyword=value pairs.
1.272 raeburn 4101: # Each value is a colon separated list that includes:
4102: # description, institutional code and course owner.
4103: # For backward compatibility with versions included
4104: # in LON-CAPA 1.1.X (and earlier) and 1.2.X, institutional
4105: # code and/or course owner are preserved from the existing
4106: # record when writing a new record in response to 1.1 or
4107: # 1.2 implementations of lonnet::flushcourselogs().
4108: #
1.234 foxr 4109: # $client - Socket open on the client.
4110: # Returns:
4111: # 1 - indicating that processing should continue
4112: #
4113: # Side effects:
4114: # reply is written to the client.
4115: #
4116: sub put_course_id_handler {
4117: my ($cmd, $tail, $client) = @_;
4118:
4119:
4120: my $userinput = "$cmd:$tail";
4121:
1.266 raeburn 4122: my ($udom, $what) = split(/:/, $tail,2);
1.234 foxr 4123: chomp($what);
4124: my $now=time;
4125: my @pairs=split(/\&/,$what);
4126:
4127: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
4128: if ($hashref) {
4129: foreach my $pair (@pairs) {
1.271 raeburn 4130: my ($key,$courseinfo) = split(/=/,$pair,2);
4131: $courseinfo =~ s/=/:/g;
1.384 raeburn 4132: if (defined($hashref->{$key})) {
4133: my $value = &Apache::lonnet::thaw_unescape($hashref->{$key});
4134: if (ref($value) eq 'HASH') {
4135: my @items = ('description','inst_code','owner','type');
4136: my @new_items = split(/:/,$courseinfo,-1);
4137: my %storehash;
4138: for (my $i=0; $i<@new_items; $i++) {
1.391 raeburn 4139: $storehash{$items[$i]} = &unescape($new_items[$i]);
1.384 raeburn 4140: }
4141: $hashref->{$key} =
4142: &Apache::lonnet::freeze_escape(\%storehash);
4143: my $unesc_key = &unescape($key);
4144: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
4145: next;
1.383 raeburn 4146: }
1.384 raeburn 4147: }
4148: my @current_items = split(/:/,$hashref->{$key},-1);
4149: shift(@current_items); # remove description
4150: pop(@current_items); # remove last access
4151: my $numcurrent = scalar(@current_items);
4152: if ($numcurrent > 3) {
4153: $numcurrent = 3;
4154: }
4155: my @new_items = split(/:/,$courseinfo,-1);
4156: my $numnew = scalar(@new_items);
4157: if ($numcurrent > 0) {
4158: if ($numnew <= $numcurrent) { # flushcourselogs() from pre 2.2
4159: for (my $j=$numcurrent-$numnew; $j>=0; $j--) {
4160: $courseinfo .= ':'.$current_items[$numcurrent-$j-1];
1.333 raeburn 4161: }
1.272 raeburn 4162: }
4163: }
1.384 raeburn 4164: $hashref->{$key}=$courseinfo.':'.$now;
1.234 foxr 4165: }
1.311 albertel 4166: if (&untie_domain_hash($hashref)) {
1.253 foxr 4167: &Reply( $client, "ok\n", $userinput);
1.234 foxr 4168: } else {
1.253 foxr 4169: &Failure($client, "error: ".($!+0)
1.234 foxr 4170: ." untie(GDBM) Failed ".
4171: "while attempting courseidput\n", $userinput);
4172: }
4173: } else {
1.253 foxr 4174: &Failure($client, "error: ".($!+0)
1.234 foxr 4175: ." tie(GDBM) Failed ".
4176: "while attempting courseidput\n", $userinput);
4177: }
4178:
4179: return 1;
4180: }
4181: ®ister_handler("courseidput", \&put_course_id_handler, 0, 1, 0);
4182:
1.383 raeburn 4183: sub put_course_id_hash_handler {
4184: my ($cmd, $tail, $client) = @_;
4185: my $userinput = "$cmd:$tail";
1.384 raeburn 4186: my ($udom,$mode,$what) = split(/:/, $tail,3);
1.383 raeburn 4187: chomp($what);
4188: my $now=time;
4189: my @pairs=split(/\&/,$what);
1.384 raeburn 4190: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
1.383 raeburn 4191: if ($hashref) {
4192: foreach my $pair (@pairs) {
4193: my ($key,$value)=split(/=/,$pair);
1.384 raeburn 4194: my $unesc_key = &unescape($key);
4195: if ($mode ne 'timeonly') {
4196: if (!defined($hashref->{&escape('lasttime:'.$unesc_key)})) {
4197: my $curritems = &Apache::lonnet::thaw_unescape($key);
4198: if (ref($curritems) ne 'HASH') {
4199: my @current_items = split(/:/,$hashref->{$key},-1);
4200: my $lasttime = pop(@current_items);
4201: $hashref->{&escape('lasttime:'.$unesc_key)} = $lasttime;
4202: } else {
4203: $hashref->{&escape('lasttime:'.$unesc_key)} = '';
4204: }
4205: }
4206: $hashref->{$key} = $value;
4207: }
4208: if ($mode ne 'notime') {
4209: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
4210: }
1.383 raeburn 4211: }
4212: if (&untie_domain_hash($hashref)) {
4213: &Reply($client, "ok\n", $userinput);
4214: } else {
4215: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4216: "while attempting courseidputhash\n", $userinput);
4217: }
4218: } else {
4219: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4220: "while attempting courseidputhash\n", $userinput);
4221: }
4222: return 1;
4223: }
4224: ®ister_handler("courseidputhash", \&put_course_id_hash_handler, 0, 1, 0);
4225:
1.234 foxr 4226: # Retrieves the value of a course id resource keyword pattern
4227: # defined since a starting date. Both the starting date and the
4228: # keyword pattern are optional. If the starting date is not supplied it
4229: # is treated as the beginning of time. If the pattern is not found,
4230: # it is treatred as "." matching everything.
4231: #
4232: # Parameters:
4233: # $cmd - Command keyword that resulted in us being dispatched.
4234: # $tail - The remainder of the command that, in this case, consists
4235: # of a colon separated list of:
4236: # domain - The domain in which the course database is
4237: # defined.
4238: # since - Optional parameter describing the minimum
4239: # time of definition(?) of the resources that
4240: # will match the dump.
4241: # description - regular expression that is used to filter
4242: # the dump. Only keywords matching this regexp
4243: # will be used.
1.272 raeburn 4244: # institutional code - optional supplied code to filter
4245: # the dump. Only courses with an institutional code
4246: # that match the supplied code will be returned.
1.336 raeburn 4247: # owner - optional supplied username and domain of owner to
4248: # filter the dump. Only courses for which the course
4249: # owner matches the supplied username and/or domain
4250: # will be returned. Pre-2.2.0 legacy entries from
4251: # nohist_courseiddump will only contain usernames.
1.384 raeburn 4252: # type - optional parameter for selection
1.418 raeburn 4253: # regexp_ok - if 1 or -1 allow the supplied institutional code
4254: # filter to behave as a regular expression:
4255: # 1 will not exclude the course if the instcode matches the RE
4256: # -1 will exclude the course if the instcode matches the RE
1.384 raeburn 4257: # rtn_as_hash - whether to return the information available for
4258: # each matched item as a frozen hash of all
4259: # key, value pairs in the item's hash, or as a
4260: # colon-separated list of (in order) description,
4261: # institutional code, and course owner.
1.404 raeburn 4262: # selfenrollonly - filter by courses allowing self-enrollment
4263: # now or in the future (selfenrollonly = 1).
4264: # catfilter - filter by course category, assigned to a course
4265: # using manually defined categories (i.e., not
1.407 raeburn 4266: # self-cataloging based on on institutional code).
1.404 raeburn 4267: # showhidden - include course in results even if course
1.407 raeburn 4268: # was set to be excluded from course catalog (DC only).
1.404 raeburn 4269: # caller - if set to 'coursecatalog', courses set to be hidden
4270: # from course catalog will be excluded from results (unless
4271: # overridden by "showhidden".
1.427 raeburn 4272: # cloner - escaped username:domain of course cloner (if picking course to
1.419 raeburn 4273: # clone).
4274: # cc_clone_list - escaped comma separated list of courses for which
4275: # course cloner has active CC role (and so can clone
4276: # automatically).
1.427 raeburn 4277: # cloneonly - filter by courses for which cloner has rights to clone.
4278: # createdbefore - include courses for which creation date preceeded this date.
4279: # createdafter - include courses for which creation date followed this date.
4280: # creationcontext - include courses created in specified context
1.404 raeburn 4281: #
1.445 raeburn 4282: # domcloner - flag to indicate if user can create CCs in course's domain.
1.489.2.11 raeburn 4283: # If so, ability to clone course is automatic.
4284: # hasuniquecode - filter by courses for which a six character unique code has
4285: # been set.
1.445 raeburn 4286: #
1.234 foxr 4287: # $client - The socket open on the client.
4288: # Returns:
4289: # 1 - Continue processing.
4290: # Side Effects:
4291: # a reply is written to $client.
4292: sub dump_course_id_handler {
4293: my ($cmd, $tail, $client) = @_;
4294: my $userinput = "$cmd:$tail";
4295:
1.333 raeburn 4296: my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter,
1.404 raeburn 4297: $typefilter,$regexp_ok,$rtn_as_hash,$selfenrollonly,$catfilter,$showhidden,
1.427 raeburn 4298: $caller,$cloner,$cc_clone_list,$cloneonly,$createdbefore,$createdafter,
1.489.2.11 raeburn 4299: $creationcontext,$domcloner,$hasuniquecode) =split(/:/,$tail);
1.397 raeburn 4300: my $now = time;
1.419 raeburn 4301: my ($cloneruname,$clonerudom,%cc_clone);
1.234 foxr 4302: if (defined($description)) {
4303: $description=&unescape($description);
4304: } else {
4305: $description='.';
4306: }
1.266 raeburn 4307: if (defined($instcodefilter)) {
4308: $instcodefilter=&unescape($instcodefilter);
4309: } else {
4310: $instcodefilter='.';
4311: }
1.336 raeburn 4312: my ($ownerunamefilter,$ownerdomfilter);
1.266 raeburn 4313: if (defined($ownerfilter)) {
4314: $ownerfilter=&unescape($ownerfilter);
1.336 raeburn 4315: if ($ownerfilter ne '.' && defined($ownerfilter)) {
4316: if ($ownerfilter =~ /^([^:]*):([^:]*)$/) {
4317: $ownerunamefilter = $1;
4318: $ownerdomfilter = $2;
4319: } else {
4320: $ownerunamefilter = $ownerfilter;
4321: $ownerdomfilter = '';
4322: }
4323: }
1.266 raeburn 4324: } else {
4325: $ownerfilter='.';
4326: }
1.336 raeburn 4327:
1.282 raeburn 4328: if (defined($coursefilter)) {
4329: $coursefilter=&unescape($coursefilter);
4330: } else {
4331: $coursefilter='.';
4332: }
1.333 raeburn 4333: if (defined($typefilter)) {
4334: $typefilter=&unescape($typefilter);
4335: } else {
4336: $typefilter='.';
4337: }
1.344 raeburn 4338: if (defined($regexp_ok)) {
4339: $regexp_ok=&unescape($regexp_ok);
4340: }
1.401 raeburn 4341: if (defined($catfilter)) {
4342: $catfilter=&unescape($catfilter);
4343: }
1.419 raeburn 4344: if (defined($cloner)) {
4345: $cloner = &unescape($cloner);
4346: ($cloneruname,$clonerudom) = ($cloner =~ /^($LONCAPA::match_username):($LONCAPA::match_domain)$/);
4347: }
4348: if (defined($cc_clone_list)) {
4349: $cc_clone_list = &unescape($cc_clone_list);
4350: my @cc_cloners = split('&',$cc_clone_list);
4351: foreach my $cid (@cc_cloners) {
4352: my ($clonedom,$clonenum) = split(':',$cid);
4353: next if ($clonedom ne $udom);
4354: $cc_clone{$clonedom.'_'.$clonenum} = 1;
4355: }
4356: }
1.431 raeburn 4357: if ($createdbefore ne '') {
1.427 raeburn 4358: $createdbefore = &unescape($createdbefore);
4359: } else {
4360: $createdbefore = 0;
4361: }
1.431 raeburn 4362: if ($createdafter ne '') {
1.427 raeburn 4363: $createdafter = &unescape($createdafter);
4364: } else {
4365: $createdafter = 0;
4366: }
1.431 raeburn 4367: if ($creationcontext ne '') {
1.427 raeburn 4368: $creationcontext = &unescape($creationcontext);
4369: } else {
4370: $creationcontext = '.';
4371: }
1.489.2.11 raeburn 4372: unless ($hasuniquecode) {
4373: $hasuniquecode = '.';
4374: }
1.384 raeburn 4375: my $unpack = 1;
1.485 raeburn 4376: if ($description eq '.' && $instcodefilter eq '.' && $ownerfilter eq '.' &&
1.384 raeburn 4377: $typefilter eq '.') {
4378: $unpack = 0;
4379: }
4380: if (!defined($since)) { $since=0; }
1.234 foxr 4381: my $qresult='';
4382: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
4383: if ($hashref) {
1.384 raeburn 4384: while (my ($key,$value) = each(%$hashref)) {
1.397 raeburn 4385: my ($unesc_key,$lasttime_key,$lasttime,$is_hash,%val,
1.427 raeburn 4386: %unesc_val,$selfenroll_end,$selfenroll_types,$created,
4387: $context);
1.384 raeburn 4388: $unesc_key = &unescape($key);
4389: if ($unesc_key =~ /^lasttime:/) {
4390: next;
4391: } else {
4392: $lasttime_key = &escape('lasttime:'.$unesc_key);
4393: }
4394: if ($hashref->{$lasttime_key} ne '') {
4395: $lasttime = $hashref->{$lasttime_key};
4396: next if ($lasttime<$since);
4397: }
1.419 raeburn 4398: my ($canclone,$valchange);
1.384 raeburn 4399: my $items = &Apache::lonnet::thaw_unescape($value);
4400: if (ref($items) eq 'HASH') {
1.429 raeburn 4401: if ($hashref->{$lasttime_key} eq '') {
1.430 raeburn 4402: next if ($since > 1);
1.429 raeburn 4403: }
1.384 raeburn 4404: $is_hash = 1;
1.445 raeburn 4405: if ($domcloner) {
4406: $canclone = 1;
4407: } elsif (defined($clonerudom)) {
1.419 raeburn 4408: if ($items->{'cloners'}) {
4409: my @cloneable = split(',',$items->{'cloners'});
4410: if (@cloneable) {
4411: if (grep(/^\*$/,@cloneable)) {
4412: $canclone = 1;
4413: } elsif (grep(/^\*:\Q$clonerudom\E$/,@cloneable)) {
4414: $canclone = 1;
4415: } elsif (grep(/^\Q$cloneruname\E:\Q$clonerudom\E$/,@cloneable)) {
4416: $canclone = 1;
4417: }
4418: }
4419: unless ($canclone) {
4420: if ($cloneruname ne '' && $clonerudom ne '') {
4421: if ($cc_clone{$unesc_key}) {
4422: $canclone = 1;
4423: $items->{'cloners'} .= ','.$cloneruname.':'.
4424: $clonerudom;
4425: $valchange = 1;
4426: }
4427: }
4428: }
4429: } elsif (defined($cloneruname)) {
4430: if ($cc_clone{$unesc_key}) {
4431: $canclone = 1;
4432: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
4433: $valchange = 1;
4434: }
1.437 raeburn 4435: unless ($canclone) {
4436: if ($items->{'owner'} =~ /:/) {
4437: if ($items->{'owner'} eq $cloner) {
4438: $canclone = 1;
4439: }
1.444 raeburn 4440: } elsif ($cloner eq $items->{'owner'}.':'.$udom) {
1.437 raeburn 4441: $canclone = 1;
4442: }
4443: if ($canclone) {
4444: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
4445: $valchange = 1;
4446: }
4447: }
1.419 raeburn 4448: }
4449: }
1.384 raeburn 4450: if ($unpack || !$rtn_as_hash) {
4451: $unesc_val{'descr'} = $items->{'description'};
4452: $unesc_val{'inst_code'} = $items->{'inst_code'};
4453: $unesc_val{'owner'} = $items->{'owner'};
4454: $unesc_val{'type'} = $items->{'type'};
1.419 raeburn 4455: $unesc_val{'cloners'} = $items->{'cloners'};
1.427 raeburn 4456: $unesc_val{'created'} = $items->{'created'};
4457: $unesc_val{'context'} = $items->{'context'};
1.404 raeburn 4458: }
4459: $selfenroll_types = $items->{'selfenroll_types'};
4460: $selfenroll_end = $items->{'selfenroll_end_date'};
1.427 raeburn 4461: $created = $items->{'created'};
4462: $context = $items->{'context'};
1.489.2.11 raeburn 4463: if ($hasuniquecode ne '.') {
4464: next unless ($items->{'uniquecode'});
4465: }
1.404 raeburn 4466: if ($selfenrollonly) {
4467: next if (!$selfenroll_types);
4468: if (($selfenroll_end > 0) && ($selfenroll_end <= $now)) {
4469: next;
1.397 raeburn 4470: }
1.404 raeburn 4471: }
1.427 raeburn 4472: if ($creationcontext ne '.') {
4473: next if (($context ne '') && ($context ne $creationcontext));
4474: }
4475: if ($createdbefore > 0) {
4476: next if (($created eq '') || ($created > $createdbefore));
4477: }
4478: if ($createdafter > 0) {
4479: next if (($created eq '') || ($created <= $createdafter));
4480: }
1.404 raeburn 4481: if ($catfilter ne '') {
1.406 raeburn 4482: next if ($items->{'categories'} eq '');
4483: my @categories = split('&',$items->{'categories'});
1.407 raeburn 4484: next if (@categories == 0);
4485: my @subcats = split('&',$catfilter);
4486: my $matchcat = 0;
4487: foreach my $cat (@categories) {
4488: if (grep(/^\Q$cat\E$/,@subcats)) {
4489: $matchcat = 1;
4490: last;
4491: }
4492: }
4493: next if (!$matchcat);
1.404 raeburn 4494: }
4495: if ($caller eq 'coursecatalog') {
1.405 raeburn 4496: if ($items->{'hidefromcat'} eq 'yes') {
4497: next if !$showhidden;
1.401 raeburn 4498: }
1.384 raeburn 4499: }
1.383 raeburn 4500: } else {
1.401 raeburn 4501: next if ($catfilter ne '');
1.419 raeburn 4502: next if ($selfenrollonly);
1.427 raeburn 4503: next if ($createdbefore || $createdafter);
4504: next if ($creationcontext ne '.');
1.419 raeburn 4505: if ((defined($clonerudom)) && (defined($cloneruname))) {
4506: if ($cc_clone{$unesc_key}) {
4507: $canclone = 1;
4508: $val{'cloners'} = &escape($cloneruname.':'.$clonerudom);
4509: }
4510: }
1.384 raeburn 4511: $is_hash = 0;
1.388 raeburn 4512: my @courseitems = split(/:/,$value);
1.403 raeburn 4513: $lasttime = pop(@courseitems);
1.402 raeburn 4514: if ($hashref->{$lasttime_key} eq '') {
4515: next if ($lasttime<$since);
4516: }
1.384 raeburn 4517: ($val{'descr'},$val{'inst_code'},$val{'owner'},$val{'type'}) = @courseitems;
1.383 raeburn 4518: }
1.419 raeburn 4519: if ($cloneonly) {
4520: next unless ($canclone);
4521: }
1.266 raeburn 4522: my $match = 1;
1.384 raeburn 4523: if ($description ne '.') {
4524: if (!$is_hash) {
4525: $unesc_val{'descr'} = &unescape($val{'descr'});
4526: }
4527: if (eval{$unesc_val{'descr'} !~ /\Q$description\E/i}) {
1.266 raeburn 4528: $match = 0;
1.384 raeburn 4529: }
1.266 raeburn 4530: }
1.384 raeburn 4531: if ($instcodefilter ne '.') {
4532: if (!$is_hash) {
4533: $unesc_val{'inst_code'} = &unescape($val{'inst_code'});
4534: }
1.418 raeburn 4535: if ($regexp_ok == 1) {
1.384 raeburn 4536: if (eval{$unesc_val{'inst_code'} !~ /$instcodefilter/}) {
1.344 raeburn 4537: $match = 0;
4538: }
1.418 raeburn 4539: } elsif ($regexp_ok == -1) {
4540: if (eval{$unesc_val{'inst_code'} =~ /$instcodefilter/}) {
4541: $match = 0;
4542: }
1.344 raeburn 4543: } else {
1.384 raeburn 4544: if (eval{$unesc_val{'inst_code'} !~ /\Q$instcodefilter\E/i}) {
1.344 raeburn 4545: $match = 0;
4546: }
1.266 raeburn 4547: }
1.234 foxr 4548: }
1.384 raeburn 4549: if ($ownerfilter ne '.') {
4550: if (!$is_hash) {
4551: $unesc_val{'owner'} = &unescape($val{'owner'});
4552: }
1.336 raeburn 4553: if (($ownerunamefilter ne '') && ($ownerdomfilter ne '')) {
1.384 raeburn 4554: if ($unesc_val{'owner'} =~ /:/) {
4555: if (eval{$unesc_val{'owner'} !~
4556: /\Q$ownerunamefilter\E:\Q$ownerdomfilter\E$/i}) {
1.336 raeburn 4557: $match = 0;
4558: }
4559: } else {
1.384 raeburn 4560: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4561: $match = 0;
4562: }
4563: }
4564: } elsif ($ownerunamefilter ne '') {
1.384 raeburn 4565: if ($unesc_val{'owner'} =~ /:/) {
4566: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E:[^:]+$/i}) {
1.336 raeburn 4567: $match = 0;
4568: }
4569: } else {
1.384 raeburn 4570: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4571: $match = 0;
4572: }
4573: }
4574: } elsif ($ownerdomfilter ne '') {
1.384 raeburn 4575: if ($unesc_val{'owner'} =~ /:/) {
4576: if (eval{$unesc_val{'owner'} !~ /^[^:]+:\Q$ownerdomfilter\E/}) {
1.336 raeburn 4577: $match = 0;
4578: }
4579: } else {
4580: if ($ownerdomfilter ne $udom) {
4581: $match = 0;
4582: }
4583: }
1.266 raeburn 4584: }
4585: }
1.384 raeburn 4586: if ($coursefilter ne '.') {
4587: if (eval{$unesc_key !~ /^$udom(_)\Q$coursefilter\E$/}) {
1.282 raeburn 4588: $match = 0;
4589: }
4590: }
1.384 raeburn 4591: if ($typefilter ne '.') {
4592: if (!$is_hash) {
4593: $unesc_val{'type'} = &unescape($val{'type'});
4594: }
4595: if ($unesc_val{'type'} eq '') {
1.333 raeburn 4596: if ($typefilter ne 'Course') {
4597: $match = 0;
4598: }
1.383 raeburn 4599: } else {
1.384 raeburn 4600: if (eval{$unesc_val{'type'} !~ /^\Q$typefilter\E$/}) {
1.333 raeburn 4601: $match = 0;
4602: }
4603: }
4604: }
1.266 raeburn 4605: if ($match == 1) {
1.384 raeburn 4606: if ($rtn_as_hash) {
4607: if ($is_hash) {
1.419 raeburn 4608: if ($valchange) {
4609: my $newvalue = &Apache::lonnet::freeze_escape($items);
4610: $qresult.=$key.'='.$newvalue.'&';
4611: } else {
4612: $qresult.=$key.'='.$value.'&';
4613: }
1.384 raeburn 4614: } else {
1.388 raeburn 4615: my %rtnhash = ( 'description' => &unescape($val{'descr'}),
4616: 'inst_code' => &unescape($val{'inst_code'}),
4617: 'owner' => &unescape($val{'owner'}),
4618: 'type' => &unescape($val{'type'}),
1.419 raeburn 4619: 'cloners' => &unescape($val{'cloners'}),
1.384 raeburn 4620: );
4621: my $items = &Apache::lonnet::freeze_escape(\%rtnhash);
4622: $qresult.=$key.'='.$items.'&';
4623: }
1.383 raeburn 4624: } else {
1.384 raeburn 4625: if ($is_hash) {
4626: $qresult .= $key.'='.&escape($unesc_val{'descr'}).':'.
4627: &escape($unesc_val{'inst_code'}).':'.
4628: &escape($unesc_val{'owner'}).'&';
4629: } else {
4630: $qresult .= $key.'='.$val{'descr'}.':'.$val{'inst_code'}.
4631: ':'.$val{'owner'}.'&';
4632: }
1.383 raeburn 4633: }
1.266 raeburn 4634: }
1.234 foxr 4635: }
1.311 albertel 4636: if (&untie_domain_hash($hashref)) {
1.234 foxr 4637: chop($qresult);
1.387 albertel 4638: &Reply($client, \$qresult, $userinput);
1.234 foxr 4639: } else {
4640: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4641: "while attempting courseiddump\n", $userinput);
4642: }
4643: } else {
4644: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4645: "while attempting courseiddump\n", $userinput);
4646: }
4647: return 1;
4648: }
4649: ®ister_handler("courseiddump", \&dump_course_id_handler, 0, 1, 0);
1.238 foxr 4650:
1.438 raeburn 4651: sub course_lastaccess_handler {
4652: my ($cmd, $tail, $client) = @_;
4653: my $userinput = "$cmd:$tail";
4654: my ($cdom,$cnum) = split(':',$tail);
4655: my (%lastaccess,$qresult);
4656: my $hashref = &tie_domain_hash($cdom, "nohist_courseids", &GDBM_WRCREAT());
4657: if ($hashref) {
4658: while (my ($key,$value) = each(%$hashref)) {
4659: my ($unesc_key,$lasttime);
4660: $unesc_key = &unescape($key);
4661: if ($cnum) {
4662: next unless ($unesc_key =~ /\Q$cdom\E_\Q$cnum\E$/);
4663: }
4664: if ($unesc_key =~ /^lasttime:($LONCAPA::match_domain\_$LONCAPA::match_courseid)/) {
4665: $lastaccess{$1} = $value;
4666: } else {
4667: my $items = &Apache::lonnet::thaw_unescape($value);
4668: if (ref($items) eq 'HASH') {
4669: unless ($lastaccess{$unesc_key}) {
4670: $lastaccess{$unesc_key} = '';
4671: }
4672: } else {
4673: my @courseitems = split(':',$value);
4674: $lastaccess{$unesc_key} = pop(@courseitems);
4675: }
4676: }
4677: }
4678: foreach my $cid (sort(keys(%lastaccess))) {
4679: $qresult.=&escape($cid).'='.$lastaccess{$cid}.'&';
4680: }
4681: if (&untie_domain_hash($hashref)) {
4682: if ($qresult) {
4683: chop($qresult);
4684: }
4685: &Reply($client, \$qresult, $userinput);
4686: } else {
4687: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4688: "while attempting lastacourseaccess\n", $userinput);
4689: }
4690: } else {
4691: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4692: "while attempting lastcourseaccess\n", $userinput);
4693: }
4694: return 1;
4695: }
4696: ®ister_handler("courselastaccess",\&course_lastaccess_handler, 0, 1, 0);
4697:
1.489.2.36 raeburn 4698: sub course_sessions_handler {
4699: my ($cmd, $tail, $client) = @_;
4700: my $userinput = "$cmd:$tail";
4701: my ($cdom,$cnum,$lastactivity) = split(':',$tail);
4702: my $dbsuffix = '_'.$cdom.'_'.$cnum.'.db';
4703: my (%sessions,$qresult);
4704: my $now=time;
4705: if (opendir(DIR,$perlvar{'lonIDsDir'})) {
4706: my $filename;
4707: while ($filename=readdir(DIR)) {
4708: next if ($filename=~/^\./);
4709: next if ($filename=~/^publicuser_/);
4710: next if ($filename=~/^[a-f0-9]+_(linked|lti_\d+)\.id$/);
1.489.2.37 raeburn 4711: if ($filename =~ /^($LONCAPA::match_username)_\d+_($LONCAPA::match_domain)_/) {
1.489.2.36 raeburn 4712: my ($uname,$udom) = ($1,$2);
1.489.2.37 raeburn 4713: next unless (-e "$perlvar{'lonDaemons'}/tmp/$uname$dbsuffix");
1.489.2.36 raeburn 4714: my $mtime = (stat("$perlvar{'lonIDsDir'}/$filename"))[9];
4715: if ($lastactivity < 0) {
1.489.2.38 raeburn 4716: next if ($mtime-$now > $lastactivity);
1.489.2.36 raeburn 4717: } else {
1.489.2.38 raeburn 4718: next if ($now-$mtime > $lastactivity);
1.489.2.36 raeburn 4719: }
4720: $sessions{$uname.':'.$udom} = $mtime;
4721: }
4722: }
4723: closedir(DIR);
4724: }
4725: foreach my $user (keys(%sessions)) {
4726: $qresult.=&escape($user).'='.$sessions{$user}.'&';
4727: }
4728: if ($qresult) {
4729: chop($qresult);
4730: }
4731: &Reply($client, \$qresult, $userinput);
4732: return 1;
4733: }
4734: ®ister_handler("coursesessions",\&course_sessions_handler, 0, 1, 0);
4735:
1.238 foxr 4736: #
1.348 raeburn 4737: # Puts an unencrypted entry in a namespace db file at the domain level
4738: #
4739: # Parameters:
4740: # $cmd - The command that got us here.
4741: # $tail - Tail of the command (remaining parameters).
4742: # $client - File descriptor connected to client.
4743: # Returns
4744: # 0 - Requested to exit, caller should shut down.
4745: # 1 - Continue processing.
4746: # Side effects:
4747: # reply is written to $client.
4748: #
4749: sub put_domain_handler {
4750: my ($cmd,$tail,$client) = @_;
4751:
4752: my $userinput = "$cmd:$tail";
4753:
4754: my ($udom,$namespace,$what) =split(/:/,$tail,3);
4755: chomp($what);
4756: my @pairs=split(/\&/,$what);
4757: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_WRCREAT(),
4758: "P", $what);
4759: if ($hashref) {
4760: foreach my $pair (@pairs) {
4761: my ($key,$value)=split(/=/,$pair);
4762: $hashref->{$key}=$value;
4763: }
4764: if (&untie_domain_hash($hashref)) {
4765: &Reply($client, "ok\n", $userinput);
4766: } else {
4767: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4768: "while attempting putdom\n", $userinput);
4769: }
4770: } else {
4771: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4772: "while attempting putdom\n", $userinput);
4773: }
4774:
4775: return 1;
4776: }
4777: ®ister_handler("putdom", \&put_domain_handler, 0, 1, 0);
4778:
4779: # Unencrypted get from the namespace database file at the domain level.
4780: # This function retrieves a keyed item from a specific named database in the
4781: # domain directory.
4782: #
4783: # Parameters:
1.489.2.40 raeburn 4784: # $cmd - Command request keyword (getdom).
1.348 raeburn 4785: # $tail - Tail of the command. This is a colon separated list
4786: # consisting of the domain and the 'namespace'
4787: # which selects the gdbm file to do the lookup in,
4788: # & separated list of keys to lookup. Note that
4789: # the values are returned as an & separated list too.
4790: # $client - File descriptor open on the client.
4791: # Returns:
4792: # 1 - Continue processing.
4793: # 0 - Exit.
4794: # Side effects:
4795: # reply is written to $client.
4796: #
4797:
4798: sub get_domain_handler {
4799: my ($cmd, $tail, $client) = @_;
4800:
1.489.2.34 raeburn 4801: my $userinput = "$cmd:$tail";
1.348 raeburn 4802:
4803: my ($udom,$namespace,$what)=split(/:/,$tail,3);
1.489.2.43.2. (raeburn 4804:): if (($namespace =~ /^enc/) || ($namespace eq 'private')) {
4805:): &Failure( $client, "refused\n", $userinput);
4806:): } else {
4807:): my $res = LONCAPA::Lond::get_dom($userinput);
4808:): if ($res =~ /^error:/) {
4809:): &Failure($client, \$res, $userinput);
4810:): } else {
4811:): &Reply($client, \$res, $userinput);
4812:): }
4813:): }
4814:):
4815:): return 1;
4816:): }
4817:): ®ister_handler("getdom", \&get_domain_handler, 0, 1, 0);
4818:):
4819:): sub encrypted_get_domain_handler {
4820:): my ($cmd, $tail, $client) = @_;
4821:):
4822:): my $userinput = "$cmd:$tail";
4823:):
4824:): my ($udom,$namespace,$what) = split(/:/,$tail,3);
4825:): if ($namespace eq 'private') {
4826:): &Failure( $client, "refused\n", $userinput);
1.348 raeburn 4827: } else {
1.489.2.43.2. (raeburn 4828:): my $res = LONCAPA::Lond::get_dom($userinput);
4829:): if ($res =~ /^error:/) {
4830:): &Failure($client, \$res, $userinput);
4831:): } else {
4832:): if ($cipher) {
4833:): my $cmdlength=length($res);
4834:): $res.=" ";
4835:): my $encres='';
4836:): for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
4837:): $encres.= unpack("H16",
4838:): $cipher->encrypt(substr($res,
4839:): $encidx,
4840:): 8)));
4841:): }
4842:): &Reply( $client,"enc:$cmdlength:$encres\n",$userinput);
4843:): } else {
4844:): &Failure( $client, "error:no_key\n",$userinput);
4845:): }
4846:): }
1.348 raeburn 4847: }
4848: return 1;
4849: }
1.489.2.43.2. (raeburn 4850:): ®ister_handler("egetdom", \&encrypted_get_domain_handler, 1, 1, 0);
1.348 raeburn 4851:
1.420 raeburn 4852: #
1.489.2.43.2. (raeburn 4853:): # Encrypted get from the namespace database file at the domain level.
4854:): # This function retrieves a keyed item from a specific named database in the
4855:): # domain directory.
4856:): #
4857:): # Parameters:
4858:): # $cmd - Command request keyword (lti).
4859:): # $tail - Tail of the command. This is a colon-separated list
4860:): # consisting of the domain, coursenum, if for LTI-
4861:): # enabled deep-linking to course content using
4862:): # link protection configured within a course,
4863:): # context (=deeplink) if for LTI-enabled deep-linking
4864:): # to course content using LTI Provider settings
4865:): # configured within a course's domain, the (escaped)
4866:): # launch URL, the (escaped) method (typically POST),
4867:): # and a frozen hash of the LTI launch parameters
4868:): # from the LTI payload.
4869:): # $client - File descriptor open on the client.
4870:): # Returns:
4871:): # 1 - Continue processing.
4872:): # 0 - Exit.
4873:): # Side effects:
4874:): # The reply will contain an LTI itemID, if the signed LTI payload
4875:): # could be verified using the consumer key and the shared secret
4876:): # available for that key (for the itemID) for either the course or domain,
4877:): # depending on values for cnum and context. The reply is encrypted before
4878:): # being written to $client.
4879:): #
4880:): sub lti_handler {
4881:): my ($cmd, $tail, $client) = @_;
4882:):
4883:): my $userinput = "$cmd:$tail";
4884:):
4885:): my ($cdom,$cnum,$context,$escurl,$escmethod,$items) = split(/:/,$tail);
4886:): my $url = &unescape($escurl);
4887:): my $method = &unescape($escmethod);
4888:): my $params = &Apache::lonnet::thaw_unescape($items);
4889:): my $res;
4890:): if ($cnum ne '') {
4891:): $res = &LONCAPA::Lond::crslti_itemid($cdom,$cnum,$url,$method,$params,$perlvar{'lonVersion'});
4892:): } else {
4893:): $res = &LONCAPA::Lond::domlti_itemid($cdom,$context,$url,$method,$params,$perlvar{'lonVersion'});
4894:): }
4895:): if ($res =~ /^error:/) {
4896:): &Failure($client, \$res, $userinput);
4897:): } else {
4898:): if ($cipher) {
4899:): my $cmdlength=length($res);
4900:): $res.=" ";
4901:): my $encres='';
4902:): for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
4903:): $encres.= unpack("H16",
4904:): $cipher->encrypt(substr($res,
4905:): $encidx,
4906:): 8)));
4907:): }
4908:): &Reply( $client,"enc:$cmdlength:$encres\n",$userinput);
4909:): } else {
4910:): &Failure( $client, "error:no_key\n",$userinput);
4911:): }
4912:): }
4913:): return 1;
4914:): }
4915:): ®ister_handler("lti", \<i_handler, 1, 1, 0);
4916:):
4917:): #
4918:): # Data for LTI payload (received encrypted) are unencrypted and
4919:): # then signed with the appropriate key and secret, before re-encrypting
4920:): # the signed payload which is sent to the client for unencryption by
4921:): # the caller: lonnet::sign_lti()) before dispatch either to a web browser
4922:): # (launch) or to a remote web service (roster, logout, or grade).
4923:): #
4924:): # Parameters:
4925:): # $cmd - Command request keyword (signlti).
4926:): # $tail - Tail of the command. This is a colon-separated list
4927:): # consisting of the domain, coursenum (if for an External
4928:): # Tool defined in a course), crsdef (true if defined in
4929:): # a course), type (linkprot or lti),
4930:): # context (launch, roster, logout, or grade),
4931:): # escaped launch URL, numeric ID of external tool,
4932:): # version number for encryption key (if tool's LTI secret was
4933:): # encrypted before storing), a frozen hash of LTI launch
4934:): # parameters, and a frozen hash of LTI information,
4935:): # (e.g., method => 'HMAC-SHA1',
4936:): # respfmt => 'to_authorization_header').
4937:): # $client - File descriptor open on the client.
4938:): # Returns:
4939:): # 1 - Continue processing.
4940:): # 0 - Exit.
4941:): # Side effects:
4942:): # The reply will contain the LTI payload, as & separated key=value pairs,
4943:): # where value is itself a frozen hash, if the required key and secret
4944:): # for the specific tool ID are available. The payload data are retrieved from
4945:): # a call to Lond::sign_lti_payload(), and the reply is encrypted before being
4946:): # written to $client.
4947:): #
4948:): sub sign_lti_handler {
4949:): my ($cmd, $tail, $client) = @_;
4950:):
4951:): my $userinput = "$cmd:$tail";
4952:):
4953:): my ($cdom,$cnum,$crsdef,$type,$context,$escurl,
4954:): $ltinum,$keynum,$paramsref,$inforef) = split(/:/,$tail);
4955:): my $url = &unescape($escurl);
4956:): my $params = &Apache::lonnet::thaw_unescape($paramsref);
4957:): my $info = &Apache::lonnet::thaw_unescape($inforef);
4958:): my $res =
4959:): &LONCAPA::Lond::sign_lti_payload($cdom,$cnum,$crsdef,$type,$context,$url,$ltinum,
4960:): $keynum,$perlvar{'lonVersion'},$params,$info);
4961:): my $result;
4962:): if (ref($res) eq 'HASH') {
4963:): foreach my $key (keys(%{$res})) {
4964:): $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($res->{$key}).'&';
4965:): }
4966:): $result =~ s/\&$//;
4967:): } else {
4968:): $result = $res;
4969:): }
4970:): if ($result =~ /^error:/) {
4971:): &Failure($client, \$result, $userinput);
4972:): } else {
4973:): if ($cipher) {
4974:): my $cmdlength=length($result);
4975:): $result.=" ";
4976:): my $encres='';
4977:): for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
4978:): $encres.= unpack("H16",
4979:): $cipher->encrypt(substr($result,
4980:): $encidx,
4981:): 8)));
4982:): }
4983:): &Reply( $client,"enc:$cmdlength:$encres\n",$userinput);
4984:): } else {
4985:): &Failure( $client, "error:no_key\n",$userinput);
4986:): }
4987:): }
4988:): return 1;
4989:): }
4990:): ®ister_handler("signlti", \&sign_lti_handler, 1, 1, 0);
4991:):
4992:): #
1.238 foxr 4993: # Puts an id to a domains id database.
4994: #
4995: # Parameters:
4996: # $cmd - The command that triggered us.
4997: # $tail - Remainder of the request other than the command. This is a
4998: # colon separated list containing:
4999: # $domain - The domain for which we are writing the id.
5000: # $pairs - The id info to write... this is and & separated list
5001: # of keyword=value.
5002: # $client - Socket open on the client.
5003: # Returns:
5004: # 1 - Continue processing.
5005: # Side effects:
5006: # reply is written to $client.
5007: #
5008: sub put_id_handler {
5009: my ($cmd,$tail,$client) = @_;
5010:
5011:
5012: my $userinput = "$cmd:$tail";
5013:
5014: my ($udom,$what)=split(/:/,$tail);
5015: chomp($what);
5016: my @pairs=split(/\&/,$what);
5017: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
5018: "P", $what);
5019: if ($hashref) {
5020: foreach my $pair (@pairs) {
5021: my ($key,$value)=split(/=/,$pair);
5022: $hashref->{$key}=$value;
5023: }
1.311 albertel 5024: if (&untie_domain_hash($hashref)) {
1.238 foxr 5025: &Reply($client, "ok\n", $userinput);
5026: } else {
5027: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5028: "while attempting idput\n", $userinput);
5029: }
5030: } else {
5031: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5032: "while attempting idput\n", $userinput);
5033: }
5034:
5035: return 1;
5036: }
1.263 albertel 5037: ®ister_handler("idput", \&put_id_handler, 0, 1, 0);
1.238 foxr 5038:
5039: #
5040: # Retrieves a set of id values from the id database.
5041: # Returns an & separated list of results, one for each requested id to the
5042: # client.
5043: #
5044: # Parameters:
5045: # $cmd - Command keyword that caused us to be dispatched.
5046: # $tail - Tail of the command. Consists of a colon separated:
5047: # domain - the domain whose id table we dump
5048: # ids Consists of an & separated list of
5049: # id keywords whose values will be fetched.
5050: # nonexisting keywords will have an empty value.
5051: # $client - Socket open on the client.
5052: #
5053: # Returns:
5054: # 1 - indicating processing should continue.
5055: # Side effects:
5056: # An & separated list of results is written to $client.
5057: #
5058: sub get_id_handler {
5059: my ($cmd, $tail, $client) = @_;
5060:
5061:
5062: my $userinput = "$client:$tail";
5063:
5064: my ($udom,$what)=split(/:/,$tail);
5065: chomp($what);
5066: my @queries=split(/\&/,$what);
5067: my $qresult='';
5068: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_READER());
5069: if ($hashref) {
5070: for (my $i=0;$i<=$#queries;$i++) {
5071: $qresult.="$hashref->{$queries[$i]}&";
5072: }
1.311 albertel 5073: if (&untie_domain_hash($hashref)) {
1.238 foxr 5074: $qresult=~s/\&$//;
1.387 albertel 5075: &Reply($client, \$qresult, $userinput);
1.238 foxr 5076: } else {
5077: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
5078: "while attempting idget\n",$userinput);
5079: }
5080: } else {
5081: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
5082: "while attempting idget\n",$userinput);
5083: }
5084:
5085: return 1;
5086: }
1.263 albertel 5087: ®ister_handler("idget", \&get_id_handler, 0, 1, 0);
1.238 foxr 5088:
1.489.2.7 raeburn 5089: # Deletes one or more ids in a domain's id database.
1.489.2.6 raeburn 5090: #
5091: # Parameters:
5092: # $cmd - Command keyword (iddel).
5093: # $tail - Command tail. In this case a colon
5094: # separated list containing:
5095: # The domain for which we are deleting the id(s).
5096: # &-separated list of id(s) to delete.
5097: # $client - File open on client socket.
5098: # Returns:
5099: # 1 - Continue processing
5100: # 0 - Exit server.
5101: #
5102: #
5103:
5104: sub del_id_handler {
5105: my ($cmd,$tail,$client) = @_;
5106:
5107: my $userinput = "$cmd:$tail";
5108:
5109: my ($udom,$what)=split(/:/,$tail);
5110: chomp($what);
5111: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
5112: "D", $what);
5113: if ($hashref) {
5114: my @keys=split(/\&/,$what);
5115: foreach my $key (@keys) {
5116: delete($hashref->{$key});
5117: }
5118: if (&untie_user_hash($hashref)) {
5119: &Reply($client, "ok\n", $userinput);
5120: } else {
5121: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5122: "while attempting iddel\n", $userinput);
5123: }
5124: } else {
5125: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5126: "while attempting iddel\n", $userinput);
5127: }
5128: return 1;
5129: }
5130: ®ister_handler("iddel", \&del_id_handler, 0, 1, 0);
5131:
1.238 foxr 5132: #
1.299 raeburn 5133: # Puts broadcast e-mail sent by Domain Coordinator in nohist_dcmail database
5134: #
5135: # Parameters
5136: # $cmd - Command keyword that caused us to be dispatched.
5137: # $tail - Tail of the command. Consists of a colon separated:
5138: # domain - the domain whose dcmail we are recording
5139: # email Consists of key=value pair
5140: # where key is unique msgid
5141: # and value is message (in XML)
5142: # $client - Socket open on the client.
5143: #
5144: # Returns:
5145: # 1 - indicating processing should continue.
5146: # Side effects
5147: # reply is written to $client.
5148: #
5149: sub put_dcmail_handler {
5150: my ($cmd,$tail,$client) = @_;
5151: my $userinput = "$cmd:$tail";
1.463 foxr 5152:
5153:
1.299 raeburn 5154: my ($udom,$what)=split(/:/,$tail);
5155: chomp($what);
5156: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
5157: if ($hashref) {
5158: my ($key,$value)=split(/=/,$what);
5159: $hashref->{$key}=$value;
5160: }
1.311 albertel 5161: if (&untie_domain_hash($hashref)) {
1.299 raeburn 5162: &Reply($client, "ok\n", $userinput);
5163: } else {
5164: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5165: "while attempting dcmailput\n", $userinput);
5166: }
5167: return 1;
5168: }
5169: ®ister_handler("dcmailput", \&put_dcmail_handler, 0, 1, 0);
5170:
5171: #
5172: # Retrieves broadcast e-mail from nohist_dcmail database
5173: # Returns to client an & separated list of key=value pairs,
5174: # where key is msgid and value is message information.
5175: #
5176: # Parameters
5177: # $cmd - Command keyword that caused us to be dispatched.
5178: # $tail - Tail of the command. Consists of a colon separated:
5179: # domain - the domain whose dcmail table we dump
5180: # startfilter - beginning of time window
5181: # endfilter - end of time window
5182: # sendersfilter - & separated list of username:domain
5183: # for senders to search for.
5184: # $client - Socket open on the client.
5185: #
5186: # Returns:
5187: # 1 - indicating processing should continue.
5188: # Side effects
5189: # reply (& separated list of msgid=messageinfo pairs) is
5190: # written to $client.
5191: #
5192: sub dump_dcmail_handler {
5193: my ($cmd, $tail, $client) = @_;
5194:
5195: my $userinput = "$cmd:$tail";
5196: my ($udom,$startfilter,$endfilter,$sendersfilter) = split(/:/,$tail);
5197: chomp($sendersfilter);
5198: my @senders = ();
5199: if (defined($startfilter)) {
5200: $startfilter=&unescape($startfilter);
5201: } else {
5202: $startfilter='.';
5203: }
5204: if (defined($endfilter)) {
5205: $endfilter=&unescape($endfilter);
5206: } else {
5207: $endfilter='.';
5208: }
5209: if (defined($sendersfilter)) {
5210: $sendersfilter=&unescape($sendersfilter);
1.300 albertel 5211: @senders = map { &unescape($_) } split(/\&/,$sendersfilter);
1.299 raeburn 5212: }
5213:
5214: my $qresult='';
5215: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
5216: if ($hashref) {
5217: while (my ($key,$value) = each(%$hashref)) {
5218: my $match = 1;
1.303 albertel 5219: my ($timestamp,$subj,$uname,$udom) =
5220: split(/:/,&unescape(&unescape($key)),5); # yes, twice really
1.299 raeburn 5221: $subj = &unescape($subj);
5222: unless ($startfilter eq '.' || !defined($startfilter)) {
5223: if ($timestamp < $startfilter) {
5224: $match = 0;
5225: }
5226: }
5227: unless ($endfilter eq '.' || !defined($endfilter)) {
5228: if ($timestamp > $endfilter) {
5229: $match = 0;
5230: }
5231: }
5232: unless (@senders < 1) {
5233: unless (grep/^$uname:$udom$/,@senders) {
5234: $match = 0;
5235: }
5236: }
5237: if ($match == 1) {
5238: $qresult.=$key.'='.$value.'&';
5239: }
5240: }
1.311 albertel 5241: if (&untie_domain_hash($hashref)) {
1.299 raeburn 5242: chop($qresult);
1.387 albertel 5243: &Reply($client, \$qresult, $userinput);
1.299 raeburn 5244: } else {
5245: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5246: "while attempting dcmaildump\n", $userinput);
5247: }
5248: } else {
5249: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
5250: "while attempting dcmaildump\n", $userinput);
5251: }
5252: return 1;
5253: }
5254:
5255: ®ister_handler("dcmaildump", \&dump_dcmail_handler, 0, 1, 0);
5256:
5257: #
5258: # Puts domain roles in nohist_domainroles database
5259: #
5260: # Parameters
5261: # $cmd - Command keyword that caused us to be dispatched.
5262: # $tail - Tail of the command. Consists of a colon separated:
5263: # domain - the domain whose roles we are recording
5264: # role - Consists of key=value pair
5265: # where key is unique role
5266: # and value is start/end date information
5267: # $client - Socket open on the client.
5268: #
5269: # Returns:
5270: # 1 - indicating processing should continue.
5271: # Side effects
5272: # reply is written to $client.
5273: #
5274:
5275: sub put_domainroles_handler {
5276: my ($cmd,$tail,$client) = @_;
5277:
5278: my $userinput = "$cmd:$tail";
5279: my ($udom,$what)=split(/:/,$tail);
5280: chomp($what);
5281: my @pairs=split(/\&/,$what);
5282: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
5283: if ($hashref) {
5284: foreach my $pair (@pairs) {
5285: my ($key,$value)=split(/=/,$pair);
5286: $hashref->{$key}=$value;
5287: }
1.311 albertel 5288: if (&untie_domain_hash($hashref)) {
1.299 raeburn 5289: &Reply($client, "ok\n", $userinput);
5290: } else {
5291: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5292: "while attempting domroleput\n", $userinput);
5293: }
5294: } else {
5295: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5296: "while attempting domroleput\n", $userinput);
5297: }
5298:
5299: return 1;
5300: }
5301:
5302: ®ister_handler("domroleput", \&put_domainroles_handler, 0, 1, 0);
5303:
5304: #
5305: # Retrieves domain roles from nohist_domainroles database
5306: # Returns to client an & separated list of key=value pairs,
5307: # where key is role and value is start and end date information.
5308: #
5309: # Parameters
5310: # $cmd - Command keyword that caused us to be dispatched.
5311: # $tail - Tail of the command. Consists of a colon separated:
5312: # domain - the domain whose domain roles table we dump
5313: # $client - Socket open on the client.
5314: #
5315: # Returns:
5316: # 1 - indicating processing should continue.
5317: # Side effects
5318: # reply (& separated list of role=start/end info pairs) is
5319: # written to $client.
5320: #
5321: sub dump_domainroles_handler {
5322: my ($cmd, $tail, $client) = @_;
5323:
5324: my $userinput = "$cmd:$tail";
5325: my ($udom,$startfilter,$endfilter,$rolesfilter) = split(/:/,$tail);
5326: chomp($rolesfilter);
5327: my @roles = ();
5328: if (defined($startfilter)) {
5329: $startfilter=&unescape($startfilter);
5330: } else {
5331: $startfilter='.';
5332: }
5333: if (defined($endfilter)) {
5334: $endfilter=&unescape($endfilter);
5335: } else {
5336: $endfilter='.';
5337: }
5338: if (defined($rolesfilter)) {
5339: $rolesfilter=&unescape($rolesfilter);
1.300 albertel 5340: @roles = split(/\&/,$rolesfilter);
1.299 raeburn 5341: }
1.421 raeburn 5342:
1.299 raeburn 5343: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
5344: if ($hashref) {
5345: my $qresult = '';
5346: while (my ($key,$value) = each(%$hashref)) {
5347: my $match = 1;
1.421 raeburn 5348: my ($end,$start) = split(/:/,&unescape($value));
1.299 raeburn 5349: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,&unescape($key));
1.421 raeburn 5350: unless (@roles < 1) {
5351: unless (grep/^\Q$trole\E$/,@roles) {
5352: $match = 0;
5353: next;
5354: }
5355: }
1.299 raeburn 5356: unless ($startfilter eq '.' || !defined($startfilter)) {
1.415 raeburn 5357: if ((defined($start)) && ($start >= $startfilter)) {
1.299 raeburn 5358: $match = 0;
1.421 raeburn 5359: next;
1.299 raeburn 5360: }
5361: }
5362: unless ($endfilter eq '.' || !defined($endfilter)) {
1.421 raeburn 5363: if ((defined($end)) && (($end > 0) && ($end <= $endfilter))) {
1.299 raeburn 5364: $match = 0;
1.421 raeburn 5365: next;
1.299 raeburn 5366: }
5367: }
5368: if ($match == 1) {
5369: $qresult.=$key.'='.$value.'&';
5370: }
5371: }
1.311 albertel 5372: if (&untie_domain_hash($hashref)) {
1.299 raeburn 5373: chop($qresult);
1.387 albertel 5374: &Reply($client, \$qresult, $userinput);
1.299 raeburn 5375: } else {
5376: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5377: "while attempting domrolesdump\n", $userinput);
5378: }
5379: } else {
5380: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
5381: "while attempting domrolesdump\n", $userinput);
5382: }
5383: return 1;
5384: }
5385:
5386: ®ister_handler("domrolesdump", \&dump_domainroles_handler, 0, 1, 0);
5387:
5388:
1.238 foxr 5389: # Process the tmpput command I'm not sure what this does.. Seems to
5390: # create a file in the lonDaemons/tmp directory of the form $id.tmp
5391: # where Id is the client's ip concatenated with a sequence number.
5392: # The file will contain some value that is passed in. Is this e.g.
5393: # a login token?
5394: #
5395: # Parameters:
5396: # $cmd - The command that got us dispatched.
5397: # $tail - The remainder of the request following $cmd:
5398: # In this case this will be the contents of the file.
5399: # $client - Socket connected to the client.
5400: # Returns:
5401: # 1 indicating processing can continue.
5402: # Side effects:
5403: # A file is created in the local filesystem.
5404: # A reply is sent to the client.
5405: sub tmp_put_handler {
5406: my ($cmd, $what, $client) = @_;
5407:
5408: my $userinput = "$cmd:$what"; # Reconstruct for logging.
5409:
1.347 raeburn 5410: my ($record,$context) = split(/:/,$what);
5411: if ($context ne '') {
5412: chomp($context);
5413: $context = &unescape($context);
5414: }
5415: my ($id,$store);
1.238 foxr 5416: $tmpsnum++;
1.489.2.42 raeburn 5417: my $numtries = 0;
5418: my $execdir=$perlvar{'lonDaemons'};
5419: if (($context eq 'resetpw') || ($context eq 'createaccount') ||
5420: ($context eq 'sso') || ($context eq 'link') || ($context eq 'retry')) {
5421: $id = &md5_hex(&md5_hex(time.{}.rand().$$.$tmpsnum));
5422: while ((-e "$execdir/tmp/$id.tmp") && ($numtries <10)) {
5423: undef($id);
5424: $id = &md5_hex(&md5_hex(time.{}.rand().$$.$tmpsnum));
5425: $numtries ++;
5426: }
1.347 raeburn 5427: } else {
5428: $id = $$.'_'.$clientip.'_'.$tmpsnum;
5429: }
1.238 foxr 5430: $id=~s/\W/\_/g;
1.347 raeburn 5431: $record=~s/\n//g;
1.489.2.42 raeburn 5432: if (($id ne '') &&
5433: ($store=IO::File->new(">$execdir/tmp/$id.tmp"))) {
1.347 raeburn 5434: print $store $record;
1.238 foxr 5435: close $store;
1.387 albertel 5436: &Reply($client, \$id, $userinput);
1.238 foxr 5437: } else {
5438: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
5439: "while attempting tmpput\n", $userinput);
5440: }
5441: return 1;
5442:
5443: }
5444: ®ister_handler("tmpput", \&tmp_put_handler, 0, 1, 0);
1.263 albertel 5445:
1.238 foxr 5446: # Processes the tmpget command. This command returns the contents
5447: # of a temporary resource file(?) created via tmpput.
5448: #
5449: # Paramters:
5450: # $cmd - Command that got us dispatched.
5451: # $id - Tail of the command, contain the id of the resource
5452: # we want to fetch.
5453: # $client - socket open on the client.
5454: # Return:
5455: # 1 - Inidcating processing can continue.
5456: # Side effects:
5457: # A reply is sent to the client.
5458: #
5459: sub tmp_get_handler {
5460: my ($cmd, $id, $client) = @_;
5461:
5462: my $userinput = "$cmd:$id";
5463:
5464:
5465: $id=~s/\W/\_/g;
5466: my $store;
5467: my $execdir=$perlvar{'lonDaemons'};
5468: if ($store=IO::File->new("$execdir/tmp/$id.tmp")) {
5469: my $reply=<$store>;
1.387 albertel 5470: &Reply( $client, \$reply, $userinput);
1.238 foxr 5471: close $store;
5472: } else {
5473: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
5474: "while attempting tmpget\n", $userinput);
5475: }
5476:
5477: return 1;
5478: }
5479: ®ister_handler("tmpget", \&tmp_get_handler, 0, 1, 0);
1.263 albertel 5480:
1.238 foxr 5481: #
5482: # Process the tmpdel command. This command deletes a temp resource
5483: # created by the tmpput command.
5484: #
5485: # Parameters:
5486: # $cmd - Command that got us here.
5487: # $id - Id of the temporary resource created.
5488: # $client - socket open on the client process.
5489: #
5490: # Returns:
5491: # 1 - Indicating processing should continue.
5492: # Side Effects:
5493: # A file is deleted
5494: # A reply is sent to the client.
5495: sub tmp_del_handler {
5496: my ($cmd, $id, $client) = @_;
5497:
5498: my $userinput= "$cmd:$id";
5499:
5500: chomp($id);
5501: $id=~s/\W/\_/g;
5502: my $execdir=$perlvar{'lonDaemons'};
5503: if (unlink("$execdir/tmp/$id.tmp")) {
5504: &Reply($client, "ok\n", $userinput);
5505: } else {
5506: &Failure( $client, "error: ".($!+0)."Unlink tmp Failed ".
5507: "while attempting tmpdel\n", $userinput);
5508: }
5509:
5510: return 1;
5511:
5512: }
5513: ®ister_handler("tmpdel", \&tmp_del_handler, 0, 1, 0);
1.263 albertel 5514:
1.238 foxr 5515: #
1.489.2.39 raeburn 5516: # Process the updatebalcookie command. This command updates a
5517: # cookie in the lonBalancedir directory on a load balancer node.
5518: #
5519: # Parameters:
5520: # $cmd - Command that got us here.
5521: # $tail - Tail of the request (escaped cookie: escaped current entry)
5522: #
5523: # $client - socket open on the client process.
5524: #
5525: # Returns:
5526: # 1 - Indicating processing should continue.
5527: # Side Effects:
5528: # A cookie file is updated from the lonBalancedir directory
5529: # A reply is sent to the client.
5530: #
5531: sub update_balcookie_handler {
5532: my ($cmd, $tail, $client) = @_;
5533:
5534: my $userinput= "$cmd:$tail";
5535: chomp($tail);
5536: my ($cookie,$lastentry) = map { &unescape($_) } (split(/:/,$tail));
5537:
5538: my $updatedone;
5539: if ($cookie =~ /^$LONCAPA::match_domain\_$LONCAPA::match_username\_[a-f0-9]{32}$/) {
5540: my $execdir=$perlvar{'lonBalanceDir'};
5541: if (-e "$execdir/$cookie.id") {
5542: my $doupdate;
5543: if (open(my $fh,'<',"$execdir/$cookie.id")) {
5544: while (my $line = <$fh>) {
5545: chomp($line);
5546: if ($line eq $lastentry) {
5547: $doupdate = 1;
5548: last;
5549: }
5550: }
5551: close($fh);
5552: }
5553: if ($doupdate) {
5554: if (open(my $fh,'>',"$execdir/$cookie.id")) {
5555: print $fh $clientname;
5556: close($fh);
5557: $updatedone = 1;
5558: }
5559: }
5560: }
5561: }
5562: if ($updatedone) {
5563: &Reply($client, "ok\n", $userinput);
5564: } else {
5565: &Failure( $client, "error: ".($!+0)."file update failed ".
5566: "while attempting updatebalcookie\n", $userinput);
5567: }
5568: return 1;
5569: }
5570: ®ister_handler("updatebalcookie", \&update_balcookie_handler, 0, 1, 0);
5571:
5572: #
1.489.2.32 raeburn 5573: # Process the delbalcookie command. This command deletes a balancer
1.489.2.39 raeburn 5574: # cookie in the lonBalancedir directory on a load balancer node.
1.489.2.32 raeburn 5575: #
5576: # Parameters:
5577: # $cmd - Command that got us here.
5578: # $cookie - Cookie to be deleted.
5579: # $client - socket open on the client process.
5580: #
5581: # Returns:
5582: # 1 - Indicating processing should continue.
5583: # Side Effects:
5584: # A cookie file is deleted from the lonBalancedir directory
5585: # A reply is sent to the client.
5586: sub del_balcookie_handler {
5587: my ($cmd, $cookie, $client) = @_;
5588:
5589: my $userinput= "$cmd:$cookie";
5590:
5591: chomp($cookie);
1.489.2.39 raeburn 5592: $cookie = &unescape($cookie);
1.489.2.32 raeburn 5593: my $deleted = '';
5594: if ($cookie =~ /^$LONCAPA::match_domain\_$LONCAPA::match_username\_[a-f0-9]{32}$/) {
5595: my $execdir=$perlvar{'lonBalanceDir'};
5596: if (-e "$execdir/$cookie.id") {
5597: if (open(my $fh,'<',"$execdir/$cookie.id")) {
5598: my $dodelete;
5599: while (my $line = <$fh>) {
5600: chomp($line);
5601: if ($line eq $clientname) {
5602: $dodelete = 1;
5603: last;
5604: }
5605: }
5606: close($fh);
5607: if ($dodelete) {
5608: if (unlink("$execdir/$cookie.id")) {
5609: $deleted = 1;
5610: }
5611: }
5612: }
5613: }
5614: }
5615: if ($deleted) {
5616: &Reply($client, "ok\n", $userinput);
5617: } else {
5618: &Failure( $client, "error: ".($!+0)."Unlinking cookie file Failed ".
5619: "while attempting delbalcookie\n", $userinput);
5620: }
5621: return 1;
5622: }
5623: ®ister_handler("delbalcookie", \&del_balcookie_handler, 0, 1, 0);
5624:
5625: #
1.246 foxr 5626: # Processes the setannounce command. This command
5627: # creates a file named announce.txt in the top directory of
5628: # the documentn root and sets its contents. The announce.txt file is
5629: # printed in its entirety at the LonCAPA login page. Note:
5630: # once the announcement.txt fileis created it cannot be deleted.
5631: # However, setting the contents of the file to empty removes the
5632: # announcement from the login page of loncapa so who cares.
5633: #
5634: # Parameters:
5635: # $cmd - The command that got us dispatched.
5636: # $announcement - The text of the announcement.
5637: # $client - Socket open on the client process.
5638: # Retunrns:
5639: # 1 - Indicating request processing should continue
5640: # Side Effects:
5641: # The file {DocRoot}/announcement.txt is created.
5642: # A reply is sent to $client.
5643: #
5644: sub set_announce_handler {
5645: my ($cmd, $announcement, $client) = @_;
5646:
5647: my $userinput = "$cmd:$announcement";
5648:
5649: chomp($announcement);
5650: $announcement=&unescape($announcement);
5651: if (my $store=IO::File->new('>'.$perlvar{'lonDocRoot'}.
5652: '/announcement.txt')) {
5653: print $store $announcement;
5654: close $store;
5655: &Reply($client, "ok\n", $userinput);
5656: } else {
5657: &Failure($client, "error: ".($!+0)."\n", $userinput);
5658: }
5659:
5660: return 1;
5661: }
5662: ®ister_handler("setannounce", \&set_announce_handler, 0, 1, 0);
1.263 albertel 5663:
1.246 foxr 5664: #
5665: # Return the version of the daemon. This can be used to determine
5666: # the compatibility of cross version installations or, alternatively to
5667: # simply know who's out of date and who isn't. Note that the version
5668: # is returned concatenated with the tail.
5669: # Parameters:
5670: # $cmd - the request that dispatched to us.
5671: # $tail - Tail of the request (client's version?).
5672: # $client - Socket open on the client.
5673: #Returns:
5674: # 1 - continue processing requests.
5675: # Side Effects:
5676: # Replies with version to $client.
5677: sub get_version_handler {
5678: my ($cmd, $tail, $client) = @_;
5679:
5680: my $userinput = $cmd.$tail;
5681:
5682: &Reply($client, &version($userinput)."\n", $userinput);
5683:
5684:
5685: return 1;
5686: }
5687: ®ister_handler("version", \&get_version_handler, 0, 1, 0);
1.263 albertel 5688:
1.246 foxr 5689: # Set the current host and domain. This is used to support
5690: # multihomed systems. Each IP of the system, or even separate daemons
5691: # on the same IP can be treated as handling a separate lonCAPA virtual
5692: # machine. This command selects the virtual lonCAPA. The client always
5693: # knows the right one since it is lonc and it is selecting the domain/system
5694: # from the hosts.tab file.
5695: # Parameters:
5696: # $cmd - Command that dispatched us.
5697: # $tail - Tail of the command (domain/host requested).
5698: # $socket - Socket open on the client.
5699: #
5700: # Returns:
5701: # 1 - Indicates the program should continue to process requests.
5702: # Side-effects:
5703: # The default domain/system context is modified for this daemon.
5704: # a reply is sent to the client.
5705: #
5706: sub set_virtual_host_handler {
5707: my ($cmd, $tail, $socket) = @_;
5708:
5709: my $userinput ="$cmd:$tail";
5710:
5711: &Reply($client, &sethost($userinput)."\n", $userinput);
5712:
5713:
5714: return 1;
5715: }
1.247 albertel 5716: ®ister_handler("sethost", \&set_virtual_host_handler, 0, 1, 0);
1.246 foxr 5717:
5718: # Process a request to exit:
5719: # - "bye" is sent to the client.
5720: # - The client socket is shutdown and closed.
5721: # - We indicate to the caller that we should exit.
5722: # Formal Parameters:
5723: # $cmd - The command that got us here.
5724: # $tail - Tail of the command (empty).
5725: # $client - Socket open on the tail.
5726: # Returns:
5727: # 0 - Indicating the program should exit!!
5728: #
5729: sub exit_handler {
5730: my ($cmd, $tail, $client) = @_;
5731:
5732: my $userinput = "$cmd:$tail";
5733:
5734: &logthis("Client $clientip ($clientname) hanging up: $userinput");
5735: &Reply($client, "bye\n", $userinput);
5736: $client->shutdown(2); # shutdown the socket forcibly.
5737: $client->close();
5738:
5739: return 0;
5740: }
1.248 foxr 5741: ®ister_handler("exit", \&exit_handler, 0,1,1);
5742: ®ister_handler("init", \&exit_handler, 0,1,1);
5743: ®ister_handler("quit", \&exit_handler, 0,1,1);
5744:
5745: # Determine if auto-enrollment is enabled.
5746: # Note that the original had what I believe to be a defect.
5747: # The original returned 0 if the requestor was not a registerd client.
5748: # It should return "refused".
5749: # Formal Parameters:
5750: # $cmd - The command that invoked us.
5751: # $tail - The tail of the command (Extra command parameters.
5752: # $client - The socket open on the client that issued the request.
5753: # Returns:
5754: # 1 - Indicating processing should continue.
5755: #
5756: sub enrollment_enabled_handler {
5757: my ($cmd, $tail, $client) = @_;
5758: my $userinput = $cmd.":".$tail; # For logging purposes.
5759:
5760:
1.337 albertel 5761: my ($cdom) = split(/:/, $tail, 2); # Domain we're asking about.
5762:
1.248 foxr 5763: my $outcome = &localenroll::run($cdom);
1.387 albertel 5764: &Reply($client, \$outcome, $userinput);
1.248 foxr 5765:
5766: return 1;
5767: }
5768: ®ister_handler("autorun", \&enrollment_enabled_handler, 0, 1, 0);
5769:
1.417 raeburn 5770: #
1.423 raeburn 5771: # Validate an institutional code used for a LON-CAPA course.
1.417 raeburn 5772: #
5773: # Formal Parameters:
5774: # $cmd - The command request that got us dispatched.
5775: # $tail - The tail of the command. In this case,
5776: # this is a colon separated set of words that will be split
5777: # into:
1.424 raeburn 5778: # $dom - The domain for which the check of
5779: # institutional course code will occur.
5780: #
5781: # $instcode - The institutional code for the course
5782: # being requested, or validated for rights
5783: # to request.
5784: #
5785: # $owner - The course requestor (who will be the
5786: # course owner, in the form username:domain
5787: #
1.417 raeburn 5788: # $client - Socket open on the client.
5789: # Returns:
5790: # 1 - Indicating processing should continue.
5791: #
5792: sub validate_instcode_handler {
5793: my ($cmd, $tail, $client) = @_;
5794: my $userinput = "$cmd:$tail";
1.423 raeburn 5795: my ($dom,$instcode,$owner) = split(/:/, $tail);
1.422 raeburn 5796: $instcode = &unescape($instcode);
5797: $owner = &unescape($owner);
1.489.2.3 raeburn 5798: my ($outcome,$description,$credits) =
1.426 raeburn 5799: &localenroll::validate_instcode($dom,$instcode,$owner);
1.489.2.3 raeburn 5800: my $result = &escape($outcome).'&'.&escape($description).'&'.
5801: &escape($credits);
1.426 raeburn 5802: &Reply($client, \$result, $userinput);
1.417 raeburn 5803:
5804: return 1;
5805: }
5806: ®ister_handler("autovalidateinstcode", \&validate_instcode_handler, 0, 1, 0);
5807:
1.489.2.41 raeburn 5808: #
5809: # Validate co-owner for cross-listed institutional code and
5810: # institutional course code itself used for a LON-CAPA course.
5811: #
5812: # Formal Parameters:
5813: # $cmd - The command request that got us dispatched.
5814: # $tail - The tail of the command. In this case,
5815: # this is a colon separated string containing:
5816: # $dom - Course's LON-CAPA domain
5817: # $instcode - Institutional course code for the course
5818: # $inst_xlist - Institutional course Id for the crosslisting
5819: # $coowner - Username of co-owner
5820: # (values for all but $dom have been escaped).
5821: #
5822: # $client - Socket open on the client.
5823: # Returns:
5824: # 1 - Indicating processing should continue.
5825: #
5826: sub validate_instcrosslist_handler {
5827: my ($cmd, $tail, $client) = @_;
5828: my $userinput = "$cmd:$tail";
5829: my ($dom,$instcode,$inst_xlist,$coowner) = split(/:/,$tail);
5830: $instcode = &unescape($instcode);
5831: $inst_xlist = &unescape($inst_xlist);
5832: $coowner = &unescape($coowner);
5833: my $outcome = &localenroll::validate_crosslist_access($dom,$instcode,
5834: $inst_xlist,$coowner);
5835: &Reply($client, \$outcome, $userinput);
5836:
5837: return 1;
5838: }
5839: ®ister_handler("autovalidateinstcrosslist", \&validate_instcrosslist_handler, 0, 1, 0);
5840:
1.248 foxr 5841: # Get the official sections for which auto-enrollment is possible.
5842: # Since the admin people won't know about 'unofficial sections'
5843: # we cannot auto-enroll on them.
5844: # Formal Parameters:
5845: # $cmd - The command request that got us dispatched here.
5846: # $tail - The remainder of the request. In our case this
5847: # will be split into:
5848: # $coursecode - The course name from the admin point of view.
5849: # $cdom - The course's domain(?).
5850: # $client - Socket open on the client.
5851: # Returns:
5852: # 1 - Indiciting processing should continue.
5853: #
5854: sub get_sections_handler {
5855: my ($cmd, $tail, $client) = @_;
5856: my $userinput = "$cmd:$tail";
5857:
5858: my ($coursecode, $cdom) = split(/:/, $tail);
5859: my @secs = &localenroll::get_sections($coursecode,$cdom);
5860: my $seclist = &escape(join(':',@secs));
5861:
1.387 albertel 5862: &Reply($client, \$seclist, $userinput);
1.248 foxr 5863:
5864:
5865: return 1;
5866: }
5867: ®ister_handler("autogetsections", \&get_sections_handler, 0, 1, 0);
5868:
5869: # Validate the owner of a new course section.
5870: #
5871: # Formal Parameters:
5872: # $cmd - Command that got us dispatched.
5873: # $tail - the remainder of the command. For us this consists of a
5874: # colon separated string containing:
5875: # $inst - Course Id from the institutions point of view.
5876: # $owner - Proposed owner of the course.
5877: # $cdom - Domain of the course (from the institutions
5878: # point of view?)..
5879: # $client - Socket open on the client.
5880: #
5881: # Returns:
5882: # 1 - Processing should continue.
5883: #
5884: sub validate_course_owner_handler {
5885: my ($cmd, $tail, $client) = @_;
5886: my $userinput = "$cmd:$tail";
1.470 raeburn 5887: my ($inst_course_id, $owner, $cdom, $coowners) = split(/:/, $tail);
5888:
1.336 raeburn 5889: $owner = &unescape($owner);
1.470 raeburn 5890: $coowners = &unescape($coowners);
5891: my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom,$coowners);
1.387 albertel 5892: &Reply($client, \$outcome, $userinput);
1.248 foxr 5893:
5894:
5895:
5896: return 1;
5897: }
5898: ®ister_handler("autonewcourse", \&validate_course_owner_handler, 0, 1, 0);
1.263 albertel 5899:
1.248 foxr 5900: #
5901: # Validate a course section in the official schedule of classes
5902: # from the institutions point of view (part of autoenrollment).
5903: #
5904: # Formal Parameters:
5905: # $cmd - The command request that got us dispatched.
5906: # $tail - The tail of the command. In this case,
5907: # this is a colon separated set of words that will be split
5908: # into:
5909: # $inst_course_id - The course/section id from the
5910: # institutions point of view.
5911: # $cdom - The domain from the institutions
5912: # point of view.
5913: # $client - Socket open on the client.
5914: # Returns:
5915: # 1 - Indicating processing should continue.
5916: #
5917: sub validate_course_section_handler {
5918: my ($cmd, $tail, $client) = @_;
5919: my $userinput = "$cmd:$tail";
5920: my ($inst_course_id, $cdom) = split(/:/, $tail);
5921:
5922: my $outcome=&localenroll::validate_courseID($inst_course_id,$cdom);
1.387 albertel 5923: &Reply($client, \$outcome, $userinput);
1.248 foxr 5924:
5925:
5926: return 1;
5927: }
5928: ®ister_handler("autovalidatecourse", \&validate_course_section_handler, 0, 1, 0);
5929:
5930: #
1.340 raeburn 5931: # Validate course owner's access to enrollment data for specific class section.
5932: #
5933: #
5934: # Formal Parameters:
5935: # $cmd - The command request that got us dispatched.
5936: # $tail - The tail of the command. In this case this is a colon separated
1.489.2.29 raeburn 5937: # set of values that will be split into:
1.340 raeburn 5938: # $inst_class - Institutional code for the specific class section
1.489.2.29 raeburn 5939: # $ownerlist - An escaped comma-separated list of username:domain
5940: # of the course owner, and co-owner(s).
1.340 raeburn 5941: # $cdom - The domain of the course from the institution's
5942: # point of view.
5943: # $client - The socket open on the client.
5944: # Returns:
5945: # 1 - continue processing.
5946: #
5947:
5948: sub validate_class_access_handler {
5949: my ($cmd, $tail, $client) = @_;
5950: my $userinput = "$cmd:$tail";
1.383 raeburn 5951: my ($inst_class,$ownerlist,$cdom) = split(/:/, $tail);
1.392 raeburn 5952: my $owners = &unescape($ownerlist);
1.341 albertel 5953: my $outcome;
5954: eval {
5955: local($SIG{__DIE__})='DEFAULT';
1.392 raeburn 5956: $outcome=&localenroll::check_section($inst_class,$owners,$cdom);
1.341 albertel 5957: };
1.387 albertel 5958: &Reply($client,\$outcome, $userinput);
1.340 raeburn 5959:
5960: return 1;
5961: }
5962: ®ister_handler("autovalidateclass_sec", \&validate_class_access_handler, 0, 1, 0);
5963:
5964: #
1.489.2.41 raeburn 5965: # Modify institutional sections (using customized &instsec_reformat()
5966: # routine in localenroll.pm), to either clutter or declutter, for
5967: # purposes of ensuring an institutional course section (string) can
5968: # be unambiguously separated into institutional course and section.
5969: #
5970: # Formal Parameters:
5971: # $cmd - The command request that got us dispatched.
5972: # $tail - The tail of the command. In this case this is a colon separated
5973: # set of values that will be split into:
5974: # $cdom - The LON-CAPA domain of the course.
5975: # $action - Either: clutter or declutter
5976: # clutter adds character(s) to eliminate ambiguity
5977: # declutter removes the added characters (e.g., for
5978: # display of the institutional course section string.
5979: # $info - A frozen hash in which keys are:
5980: # LON-CAPA course number:Institutional course code
5981: # and values are a reference to an array of the
5982: # items to modify -- either institutional sections,
5983: # or institutional course sections (for crosslistings).
5984: # $client - The socket open on the client.
5985: # Returns:
5986: # 1 - continue processing.
5987: #
5988:
5989: sub instsec_reformat_handler {
5990: my ($cmd, $tail, $client) = @_;
5991: my $userinput = "$cmd:$tail";
5992: my ($cdom,$action,$info) = split(/:/,$tail);
5993: my $instsecref = &Apache::lonnet::thaw_unescape($info);
5994: my ($outcome,$result);
5995: eval {
5996: local($SIG{__DIE__})='DEFAULT';
5997: $outcome=&localenroll::instsec_reformat($cdom,$action,$instsecref);
5998: if ($outcome eq 'ok') {
5999: if (ref($instsecref) eq 'HASH') {
6000: foreach my $key (keys(%{$instsecref})) {
6001: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($instsecref->{$key}).'&';
6002: }
6003: $result =~ s/\&$//;
6004: }
6005: }
6006: };
6007: if (!$@) {
6008: if ($outcome eq 'ok') {
6009: &Reply( $client, \$result, $userinput);
6010: } else {
6011: &Reply($client,\$outcome, $userinput);
6012: }
6013: } else {
6014: &Failure($client,"unknown_cmd\n",$userinput);
6015: }
6016: return 1;
6017: }
6018: ®ister_handler("autoinstsecreformat",\&instsec_reformat_handler, 0, 1, 0);
6019:
6020: #
1.489.2.29 raeburn 6021: # Validate course owner or co-owners(s) access to enrollment data for all sections
6022: # and crosslistings for a particular course.
6023: #
6024: #
6025: # Formal Parameters:
6026: # $cmd - The command request that got us dispatched.
6027: # $tail - The tail of the command. In this case this is a colon separated
6028: # set of values that will be split into:
6029: # $ownerlist - An escaped comma-separated list of username:domain
6030: # of the course owner, and co-owner(s).
6031: # $cdom - The domain of the course from the institution's
6032: # point of view.
6033: # $classes - Frozen hash of institutional course sections and
6034: # crosslistings.
6035: # $client - The socket open on the client.
6036: # Returns:
6037: # 1 - continue processing.
6038: #
6039:
6040: sub validate_classes_handler {
6041: my ($cmd, $tail, $client) = @_;
6042: my $userinput = "$cmd:$tail";
6043: my ($ownerlist,$cdom,$classes) = split(/:/, $tail);
6044: my $classesref = &Apache::lonnet::thaw_unescape($classes);
6045: my $owners = &unescape($ownerlist);
6046: my $result;
6047: eval {
6048: local($SIG{__DIE__})='DEFAULT';
6049: my %validations;
6050: my $response = &localenroll::check_instclasses($owners,$cdom,$classesref,
6051: \%validations);
6052: if ($response eq 'ok') {
6053: foreach my $key (keys(%validations)) {
6054: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
6055: }
6056: $result =~ s/\&$//;
6057: } else {
6058: $result = 'error';
6059: }
6060: };
6061: if (!$@) {
6062: &Reply($client, \$result, $userinput);
6063: } else {
6064: &Failure($client,"unknown_cmd\n",$userinput);
6065: }
6066: return 1;
6067: }
6068: ®ister_handler("autovalidateinstclasses", \&validate_classes_handler, 0, 1, 0);
6069:
6070: #
1.340 raeburn 6071: # Create a password for a new LON-CAPA user added by auto-enrollment.
6072: # Only used for case where authentication method for new user is localauth
1.248 foxr 6073: #
6074: # Formal Parameters:
6075: # $cmd - The command request that got us dispatched.
6076: # $tail - The tail of the command. In this case this is a colon separated
6077: # set of words that will be split into:
1.340 raeburn 6078: # $authparam - An authentication parameter (localauth parameter).
1.248 foxr 6079: # $cdom - The domain of the course from the institution's
6080: # point of view.
6081: # $client - The socket open on the client.
6082: # Returns:
6083: # 1 - continue processing.
6084: #
6085: sub create_auto_enroll_password_handler {
6086: my ($cmd, $tail, $client) = @_;
6087: my $userinput = "$cmd:$tail";
6088:
6089: my ($authparam, $cdom) = split(/:/, $userinput);
6090:
6091: my ($create_passwd,$authchk);
6092: ($authparam,
6093: $create_passwd,
6094: $authchk) = &localenroll::create_password($authparam,$cdom);
6095:
6096: &Reply($client, &escape($authparam.':'.$create_passwd.':'.$authchk)."\n",
6097: $userinput);
6098:
6099:
6100: return 1;
6101: }
6102: ®ister_handler("autocreatepassword", \&create_auto_enroll_password_handler,
6103: 0, 1, 0);
6104:
1.489.2.22 raeburn 6105: sub auto_export_grades_handler {
6106: my ($cmd, $tail, $client) = @_;
6107: my $userinput = "$cmd:$tail";
6108: my ($cdom,$cnum,$info,$data) = split(/:/,$tail);
6109: my $inforef = &Apache::lonnet::thaw_unescape($info);
6110: my $dataref = &Apache::lonnet::thaw_unescape($data);
6111: my ($outcome,$result);;
6112: eval {
6113: local($SIG{__DIE__})='DEFAULT';
6114: my %rtnhash;
6115: $outcome=&localenroll::export_grades($cdom,$cnum,$inforef,$dataref,\%rtnhash);
6116: if ($outcome eq 'ok') {
6117: foreach my $key (keys(%rtnhash)) {
6118: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&';
6119: }
6120: $result =~ s/\&$//;
6121: }
6122: };
6123: if (!$@) {
6124: if ($outcome eq 'ok') {
6125: if ($cipher) {
6126: my $cmdlength=length($result);
6127: $result.=" ";
6128: my $encresult='';
6129: for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
6130: $encresult.= unpack("H16",
6131: $cipher->encrypt(substr($result,
6132: $encidx,
6133: 8)));
6134: }
6135: &Reply( $client, "enc:$cmdlength:$encresult\n", $userinput);
6136: } else {
6137: &Failure( $client, "error:no_key\n", $userinput);
6138: }
6139: } else {
6140: &Reply($client, "$outcome\n", $userinput);
6141: }
6142: } else {
6143: &Failure($client,"export_error\n",$userinput);
6144: }
6145: return 1;
6146: }
6147: ®ister_handler("autoexportgrades", \&auto_export_grades_handler,
1.489.2.35 raeburn 6148: 1, 1, 0);
1.489.2.22 raeburn 6149:
6150:
1.248 foxr 6151: # Retrieve and remove temporary files created by/during autoenrollment.
6152: #
6153: # Formal Parameters:
6154: # $cmd - The command that got us dispatched.
6155: # $tail - The tail of the command. In our case this is a colon
6156: # separated list that will be split into:
1.489.2.24 raeburn 6157: # $filename - The name of the file to retrieve.
1.248 foxr 6158: # The filename is given as a path relative to
6159: # the LonCAPA temp file directory.
6160: # $client - Socket open on the client.
6161: #
6162: # Returns:
6163: # 1 - Continue processing.
6164: sub retrieve_auto_file_handler {
6165: my ($cmd, $tail, $client) = @_;
6166: my $userinput = "cmd:$tail";
6167:
6168: my ($filename) = split(/:/, $tail);
6169:
6170: my $source = $perlvar{'lonDaemons'}.'/tmp/'.$filename;
1.489.2.20 raeburn 6171: if ($filename =~m{/\.\./}) {
6172: &Failure($client, "refused\n", $userinput);
1.489.2.24 raeburn 6173: } elsif ($filename !~ /^$LONCAPA::match_domain\_$LONCAPA::match_courseid\_.+_classlist\.xml$/) {
6174: &Failure($client, "refused\n", $userinput);
1.489.2.20 raeburn 6175: } elsif ( (-e $source) && ($filename ne '') ) {
1.248 foxr 6176: my $reply = '';
6177: if (open(my $fh,$source)) {
6178: while (<$fh>) {
6179: chomp($_);
6180: $_ =~ s/^\s+//g;
6181: $_ =~ s/\s+$//g;
6182: $reply .= $_;
6183: }
6184: close($fh);
6185: &Reply($client, &escape($reply)."\n", $userinput);
6186:
6187: # Does this have to be uncommented??!? (RF).
6188: #
6189: # unlink($source);
6190: } else {
6191: &Failure($client, "error\n", $userinput);
6192: }
6193: } else {
6194: &Failure($client, "error\n", $userinput);
6195: }
6196:
6197:
6198: return 1;
6199: }
6200: ®ister_handler("autoretrieve", \&retrieve_auto_file_handler, 0,1,0);
6201:
1.423 raeburn 6202: sub crsreq_checks_handler {
6203: my ($cmd, $tail, $client) = @_;
6204: my $userinput = "$cmd:$tail";
6205: my $dom = $tail;
6206: my $result;
1.489.2.12 raeburn 6207: my @reqtypes = ('official','unofficial','community','textbook');
1.423 raeburn 6208: eval {
6209: local($SIG{__DIE__})='DEFAULT';
6210: my %validations;
1.424 raeburn 6211: my $response = &localenroll::crsreq_checks($dom,\@reqtypes,
6212: \%validations);
1.423 raeburn 6213: if ($response eq 'ok') {
6214: foreach my $key (keys(%validations)) {
6215: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
6216: }
6217: $result =~ s/\&$//;
6218: } else {
6219: $result = 'error';
6220: }
6221: };
6222: if (!$@) {
6223: &Reply($client, \$result, $userinput);
6224: } else {
6225: &Failure($client,"unknown_cmd\n",$userinput);
6226: }
6227: return 1;
6228: }
6229: ®ister_handler("autocrsreqchecks", \&crsreq_checks_handler, 0, 1, 0);
6230:
6231: sub validate_crsreq_handler {
6232: my ($cmd, $tail, $client) = @_;
6233: my $userinput = "$cmd:$tail";
1.489.2.13 raeburn 6234: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$customdata) = split(/:/, $tail);
1.423 raeburn 6235: $instcode = &unescape($instcode);
6236: $owner = &unescape($owner);
6237: $crstype = &unescape($crstype);
6238: $inststatuslist = &unescape($inststatuslist);
6239: $instcode = &unescape($instcode);
6240: $instseclist = &unescape($instseclist);
1.489.2.13 raeburn 6241: my $custominfo = &Apache::lonnet::thaw_unescape($customdata);
1.423 raeburn 6242: my $outcome;
6243: eval {
6244: local($SIG{__DIE__})='DEFAULT';
6245: $outcome = &localenroll::validate_crsreq($dom,$owner,$crstype,
6246: $inststatuslist,$instcode,
1.489.2.13 raeburn 6247: $instseclist,$custominfo);
1.423 raeburn 6248: };
6249: if (!$@) {
6250: &Reply($client, \$outcome, $userinput);
6251: } else {
6252: &Failure($client,"unknown_cmd\n",$userinput);
6253: }
6254: return 1;
6255: }
6256: ®ister_handler("autocrsreqvalidation", \&validate_crsreq_handler, 0, 1, 0);
6257:
1.489.2.11 raeburn 6258: sub crsreq_update_handler {
6259: my ($cmd, $tail, $client) = @_;
6260: my $userinput = "$cmd:$tail";
1.489.2.14 raeburn 6261: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,$code,
6262: $accessstart,$accessend,$infohashref) =
1.489.2.11 raeburn 6263: split(/:/, $tail);
6264: $crstype = &unescape($crstype);
6265: $action = &unescape($action);
6266: $ownername = &unescape($ownername);
6267: $ownerdomain = &unescape($ownerdomain);
6268: $fullname = &unescape($fullname);
6269: $title = &unescape($title);
6270: $code = &unescape($code);
1.489.2.14 raeburn 6271: $accessstart = &unescape($accessstart);
6272: $accessend = &unescape($accessend);
1.489.2.11 raeburn 6273: my $incoming = &Apache::lonnet::thaw_unescape($infohashref);
6274: my ($result,$outcome);
6275: eval {
6276: local($SIG{__DIE__})='DEFAULT';
6277: my %rtnhash;
6278: $outcome = &localenroll::crsreq_updates($cdom,$cnum,$crstype,$action,
6279: $ownername,$ownerdomain,$fullname,
1.489.2.14 raeburn 6280: $title,$code,$accessstart,$accessend,
6281: $incoming,\%rtnhash);
1.489.2.11 raeburn 6282: if ($outcome eq 'ok') {
1.489.2.18 raeburn 6283: my @posskeys = qw(createdweb createdmsg createdcustomized createdactions queuedweb queuedmsg formitems reviewweb validationjs onload javascript);
1.489.2.11 raeburn 6284: foreach my $key (keys(%rtnhash)) {
6285: if (grep(/^\Q$key\E/,@posskeys)) {
6286: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&';
6287: }
6288: }
6289: $result =~ s/\&$//;
6290: }
6291: };
6292: if (!$@) {
6293: if ($outcome eq 'ok') {
6294: &Reply($client, \$result, $userinput);
6295: } else {
6296: &Reply($client, "format_error\n", $userinput);
6297: }
6298: } else {
6299: &Failure($client,"unknown_cmd\n",$userinput);
6300: }
6301: return 1;
6302: }
6303: ®ister_handler("autocrsrequpdate", \&crsreq_update_handler, 0, 1, 0);
6304:
1.248 foxr 6305: #
6306: # Read and retrieve institutional code format (for support form).
6307: # Formal Parameters:
6308: # $cmd - Command that dispatched us.
6309: # $tail - Tail of the command. In this case it conatins
6310: # the course domain and the coursename.
6311: # $client - Socket open on the client.
6312: # Returns:
6313: # 1 - Continue processing.
6314: #
6315: sub get_institutional_code_format_handler {
6316: my ($cmd, $tail, $client) = @_;
6317: my $userinput = "$cmd:$tail";
6318:
6319: my $reply;
6320: my($cdom,$course) = split(/:/,$tail);
6321: my @pairs = split/\&/,$course;
6322: my %instcodes = ();
6323: my %codes = ();
6324: my @codetitles = ();
6325: my %cat_titles = ();
6326: my %cat_order = ();
6327: foreach (@pairs) {
6328: my ($key,$value) = split/=/,$_;
6329: $instcodes{&unescape($key)} = &unescape($value);
6330: }
6331: my $formatreply = &localenroll::instcode_format($cdom,
6332: \%instcodes,
6333: \%codes,
6334: \@codetitles,
6335: \%cat_titles,
6336: \%cat_order);
6337: if ($formatreply eq 'ok') {
1.365 albertel 6338: my $codes_str = &Apache::lonnet::hash2str(%codes);
6339: my $codetitles_str = &Apache::lonnet::array2str(@codetitles);
6340: my $cat_titles_str = &Apache::lonnet::hash2str(%cat_titles);
6341: my $cat_order_str = &Apache::lonnet::hash2str(%cat_order);
1.248 foxr 6342: &Reply($client,
6343: $codes_str.':'.$codetitles_str.':'.$cat_titles_str.':'
6344: .$cat_order_str."\n",
6345: $userinput);
6346: } else {
6347: # this else branch added by RF since if not ok, lonc will
6348: # hang waiting on reply until timeout.
6349: #
6350: &Reply($client, "format_error\n", $userinput);
6351: }
6352:
6353: return 1;
6354: }
1.265 albertel 6355: ®ister_handler("autoinstcodeformat",
6356: \&get_institutional_code_format_handler,0,1,0);
1.246 foxr 6357:
1.345 raeburn 6358: sub get_institutional_defaults_handler {
6359: my ($cmd, $tail, $client) = @_;
6360: my $userinput = "$cmd:$tail";
6361:
6362: my $dom = $tail;
6363: my %defaults_hash;
6364: my @code_order;
6365: my $outcome;
6366: eval {
6367: local($SIG{__DIE__})='DEFAULT';
6368: $outcome = &localenroll::instcode_defaults($dom,\%defaults_hash,
6369: \@code_order);
6370: };
6371: if (!$@) {
6372: if ($outcome eq 'ok') {
6373: my $result='';
6374: while (my ($key,$value) = each(%defaults_hash)) {
6375: $result.=&escape($key).'='.&escape($value).'&';
6376: }
6377: $result .= 'code_order='.&escape(join('&',@code_order));
1.387 albertel 6378: &Reply($client,\$result,$userinput);
1.345 raeburn 6379: } else {
6380: &Reply($client,"error\n", $userinput);
6381: }
6382: } else {
6383: &Failure($client,"unknown_cmd\n",$userinput);
6384: }
6385: }
6386: ®ister_handler("autoinstcodedefaults",
6387: \&get_institutional_defaults_handler,0,1,0);
6388:
1.416 raeburn 6389: sub get_possible_instcodes_handler {
6390: my ($cmd, $tail, $client) = @_;
6391: my $userinput = "$cmd:$tail";
6392:
6393: my $reply;
6394: my $cdom = $tail;
1.417 raeburn 6395: my (@codetitles,%cat_titles,%cat_order,@code_order);
1.416 raeburn 6396: my $formatreply = &localenroll::possible_instcodes($cdom,
6397: \@codetitles,
6398: \%cat_titles,
1.417 raeburn 6399: \%cat_order,
6400: \@code_order);
1.416 raeburn 6401: if ($formatreply eq 'ok') {
6402: my $result = join('&',map {&escape($_);} (@codetitles)).':';
1.417 raeburn 6403: $result .= join('&',map {&escape($_);} (@code_order)).':';
1.416 raeburn 6404: foreach my $key (keys(%cat_titles)) {
6405: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_titles{$key}).'&';
6406: }
6407: $result =~ s/\&$//;
6408: $result .= ':';
6409: foreach my $key (keys(%cat_order)) {
6410: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_order{$key}).'&';
6411: }
6412: $result =~ s/\&$//;
6413: &Reply($client,\$result,$userinput);
6414: } else {
6415: &Reply($client, "format_error\n", $userinput);
6416: }
6417: return 1;
6418: }
6419: ®ister_handler("autopossibleinstcodes",
6420: \&get_possible_instcodes_handler,0,1,0);
6421:
1.381 raeburn 6422: sub get_institutional_user_rules {
6423: my ($cmd, $tail, $client) = @_;
6424: my $userinput = "$cmd:$tail";
6425: my $dom = &unescape($tail);
6426: my (%rules_hash,@rules_order);
6427: my $outcome;
6428: eval {
6429: local($SIG{__DIE__})='DEFAULT';
6430: $outcome = &localenroll::username_rules($dom,\%rules_hash,\@rules_order);
6431: };
6432: if (!$@) {
6433: if ($outcome eq 'ok') {
6434: my $result;
6435: foreach my $key (keys(%rules_hash)) {
6436: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6437: }
6438: $result =~ s/\&$//;
6439: $result .= ':';
6440: if (@rules_order > 0) {
6441: foreach my $item (@rules_order) {
6442: $result .= &escape($item).'&';
6443: }
6444: }
6445: $result =~ s/\&$//;
1.387 albertel 6446: &Reply($client,\$result,$userinput);
1.381 raeburn 6447: } else {
6448: &Reply($client,"error\n", $userinput);
6449: }
6450: } else {
6451: &Failure($client,"unknown_cmd\n",$userinput);
6452: }
6453: }
6454: ®ister_handler("instuserrules",\&get_institutional_user_rules,0,1,0);
6455:
1.389 raeburn 6456: sub get_institutional_id_rules {
6457: my ($cmd, $tail, $client) = @_;
6458: my $userinput = "$cmd:$tail";
6459: my $dom = &unescape($tail);
6460: my (%rules_hash,@rules_order);
6461: my $outcome;
6462: eval {
6463: local($SIG{__DIE__})='DEFAULT';
6464: $outcome = &localenroll::id_rules($dom,\%rules_hash,\@rules_order);
6465: };
6466: if (!$@) {
6467: if ($outcome eq 'ok') {
6468: my $result;
6469: foreach my $key (keys(%rules_hash)) {
6470: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6471: }
6472: $result =~ s/\&$//;
6473: $result .= ':';
6474: if (@rules_order > 0) {
6475: foreach my $item (@rules_order) {
6476: $result .= &escape($item).'&';
6477: }
6478: }
6479: $result =~ s/\&$//;
6480: &Reply($client,\$result,$userinput);
6481: } else {
6482: &Reply($client,"error\n", $userinput);
6483: }
6484: } else {
6485: &Failure($client,"unknown_cmd\n",$userinput);
6486: }
6487: }
6488: ®ister_handler("instidrules",\&get_institutional_id_rules,0,1,0);
6489:
1.397 raeburn 6490: sub get_institutional_selfcreate_rules {
1.396 raeburn 6491: my ($cmd, $tail, $client) = @_;
6492: my $userinput = "$cmd:$tail";
6493: my $dom = &unescape($tail);
6494: my (%rules_hash,@rules_order);
6495: my $outcome;
6496: eval {
6497: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 6498: $outcome = &localenroll::selfcreate_rules($dom,\%rules_hash,\@rules_order);
1.396 raeburn 6499: };
6500: if (!$@) {
6501: if ($outcome eq 'ok') {
6502: my $result;
6503: foreach my $key (keys(%rules_hash)) {
6504: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6505: }
6506: $result =~ s/\&$//;
6507: $result .= ':';
6508: if (@rules_order > 0) {
6509: foreach my $item (@rules_order) {
6510: $result .= &escape($item).'&';
6511: }
6512: }
6513: $result =~ s/\&$//;
6514: &Reply($client,\$result,$userinput);
6515: } else {
6516: &Reply($client,"error\n", $userinput);
6517: }
6518: } else {
6519: &Failure($client,"unknown_cmd\n",$userinput);
6520: }
6521: }
1.397 raeburn 6522: ®ister_handler("instemailrules",\&get_institutional_selfcreate_rules,0,1,0);
1.396 raeburn 6523:
1.489.2.43.2. (raeburn 6524:): sub get_unamemap_rules {
6525:): my ($cmd, $tail, $client) = @_;
6526:): my $userinput = "$cmd:$tail";
6527:): my $dom = &unescape($tail);
6528:): my (%rules_hash,@rules_order);
6529:): my $outcome;
6530:): eval {
6531:): local($SIG{__DIE__})='DEFAULT';
6532:): $outcome = &localenroll::unamemap_rules($dom,\%rules_hash,\@rules_order);
6533:): };
6534:): if (!$@) {
6535:): if ($outcome eq 'ok') {
6536:): my $result;
6537:): foreach my $key (keys(%rules_hash)) {
6538:): $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6539:): }
6540:): $result =~ s/\&$//;
6541:): $result .= ':';
6542:): if (@rules_order > 0) {
6543:): foreach my $item (@rules_order) {
6544:): $result .= &escape($item).'&';
6545:): }
6546:): }
6547:): $result =~ s/\&$//;
6548:): &Reply($client,\$result,$userinput);
6549:): } else {
6550:): &Reply($client,"error\n", $userinput);
6551:): }
6552:): } else {
6553:): &Failure($client,"unknown_cmd\n",$userinput);
6554:): }
6555:): }
6556:): ®ister_handler("unamemaprules",\&get_unamemap_rules,0,1,0);
1.381 raeburn 6557:
6558: sub institutional_username_check {
6559: my ($cmd, $tail, $client) = @_;
6560: my $userinput = "$cmd:$tail";
6561: my %rulecheck;
6562: my $outcome;
6563: my ($udom,$uname,@rules) = split(/:/,$tail);
6564: $udom = &unescape($udom);
6565: $uname = &unescape($uname);
6566: @rules = map {&unescape($_);} (@rules);
6567: eval {
6568: local($SIG{__DIE__})='DEFAULT';
6569: $outcome = &localenroll::username_check($udom,$uname,\@rules,\%rulecheck);
6570: };
6571: if (!$@) {
6572: if ($outcome eq 'ok') {
6573: my $result='';
6574: foreach my $key (keys(%rulecheck)) {
6575: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6576: }
1.387 albertel 6577: &Reply($client,\$result,$userinput);
1.381 raeburn 6578: } else {
6579: &Reply($client,"error\n", $userinput);
6580: }
6581: } else {
6582: &Failure($client,"unknown_cmd\n",$userinput);
6583: }
6584: }
6585: ®ister_handler("instrulecheck",\&institutional_username_check,0,1,0);
6586:
1.389 raeburn 6587: sub institutional_id_check {
6588: my ($cmd, $tail, $client) = @_;
6589: my $userinput = "$cmd:$tail";
6590: my %rulecheck;
6591: my $outcome;
6592: my ($udom,$id,@rules) = split(/:/,$tail);
6593: $udom = &unescape($udom);
6594: $id = &unescape($id);
6595: @rules = map {&unescape($_);} (@rules);
6596: eval {
6597: local($SIG{__DIE__})='DEFAULT';
6598: $outcome = &localenroll::id_check($udom,$id,\@rules,\%rulecheck);
6599: };
6600: if (!$@) {
6601: if ($outcome eq 'ok') {
6602: my $result='';
6603: foreach my $key (keys(%rulecheck)) {
6604: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6605: }
6606: &Reply($client,\$result,$userinput);
6607: } else {
6608: &Reply($client,"error\n", $userinput);
6609: }
6610: } else {
6611: &Failure($client,"unknown_cmd\n",$userinput);
6612: }
6613: }
6614: ®ister_handler("instidrulecheck",\&institutional_id_check,0,1,0);
1.345 raeburn 6615:
1.397 raeburn 6616: sub institutional_selfcreate_check {
1.396 raeburn 6617: my ($cmd, $tail, $client) = @_;
6618: my $userinput = "$cmd:$tail";
6619: my %rulecheck;
6620: my $outcome;
6621: my ($udom,$email,@rules) = split(/:/,$tail);
6622: $udom = &unescape($udom);
6623: $email = &unescape($email);
6624: @rules = map {&unescape($_);} (@rules);
6625: eval {
6626: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 6627: $outcome = &localenroll::selfcreate_check($udom,$email,\@rules,\%rulecheck);
1.396 raeburn 6628: };
6629: if (!$@) {
6630: if ($outcome eq 'ok') {
6631: my $result='';
6632: foreach my $key (keys(%rulecheck)) {
6633: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6634: }
6635: &Reply($client,\$result,$userinput);
6636: } else {
6637: &Reply($client,"error\n", $userinput);
6638: }
6639: } else {
6640: &Failure($client,"unknown_cmd\n",$userinput);
6641: }
6642: }
1.397 raeburn 6643: ®ister_handler("instselfcreatecheck",\&institutional_selfcreate_check,0,1,0);
1.396 raeburn 6644:
1.317 raeburn 6645: # Get domain specific conditions for import of student photographs to a course
6646: #
6647: # Retrieves information from photo_permission subroutine in localenroll.
6648: # Returns outcome (ok) if no processing errors, and whether course owner is
6649: # required to accept conditions of use (yes/no).
6650: #
6651: #
6652: sub photo_permission_handler {
6653: my ($cmd, $tail, $client) = @_;
6654: my $userinput = "$cmd:$tail";
6655: my $cdom = $tail;
6656: my ($perm_reqd,$conditions);
1.320 albertel 6657: my $outcome;
6658: eval {
6659: local($SIG{__DIE__})='DEFAULT';
6660: $outcome = &localenroll::photo_permission($cdom,\$perm_reqd,
6661: \$conditions);
6662: };
6663: if (!$@) {
6664: &Reply($client, &escape($outcome.':'.$perm_reqd.':'. $conditions)."\n",
6665: $userinput);
6666: } else {
6667: &Failure($client,"unknown_cmd\n",$userinput);
6668: }
6669: return 1;
1.317 raeburn 6670: }
6671: ®ister_handler("autophotopermission",\&photo_permission_handler,0,1,0);
6672:
6673: #
6674: # Checks if student photo is available for a user in the domain, in the user's
6675: # directory (in /userfiles/internal/studentphoto.jpg).
6676: # Uses localstudentphoto:fetch() to ensure there is an up to date copy of
6677: # the student's photo.
6678:
6679: sub photo_check_handler {
6680: my ($cmd, $tail, $client) = @_;
6681: my $userinput = "$cmd:$tail";
6682: my ($udom,$uname,$pid) = split(/:/,$tail);
6683: $udom = &unescape($udom);
6684: $uname = &unescape($uname);
6685: $pid = &unescape($pid);
6686: my $path=&propath($udom,$uname).'/userfiles/internal/';
6687: if (!-e $path) {
6688: &mkpath($path);
6689: }
6690: my $response;
6691: my $result = &localstudentphoto::fetch($udom,$uname,$pid,\$response);
6692: $result .= ':'.$response;
6693: &Reply($client, &escape($result)."\n",$userinput);
1.320 albertel 6694: return 1;
1.317 raeburn 6695: }
6696: ®ister_handler("autophotocheck",\&photo_check_handler,0,1,0);
6697:
6698: #
6699: # Retrieve information from localenroll about whether to provide a button
6700: # for users who have enbled import of student photos to initiate an
6701: # update of photo files for registered students. Also include
6702: # comment to display alongside button.
6703:
6704: sub photo_choice_handler {
6705: my ($cmd, $tail, $client) = @_;
6706: my $userinput = "$cmd:$tail";
6707: my $cdom = &unescape($tail);
1.320 albertel 6708: my ($update,$comment);
6709: eval {
6710: local($SIG{__DIE__})='DEFAULT';
6711: ($update,$comment) = &localenroll::manager_photo_update($cdom);
6712: };
6713: if (!$@) {
6714: &Reply($client,&escape($update).':'.&escape($comment)."\n",$userinput);
6715: } else {
6716: &Failure($client,"unknown_cmd\n",$userinput);
6717: }
6718: return 1;
1.317 raeburn 6719: }
6720: ®ister_handler("autophotochoice",\&photo_choice_handler,0,1,0);
6721:
1.265 albertel 6722: #
6723: # Gets a student's photo to exist (in the correct image type) in the user's
6724: # directory.
6725: # Formal Parameters:
6726: # $cmd - The command request that got us dispatched.
6727: # $tail - A colon separated set of words that will be split into:
6728: # $domain - student's domain
6729: # $uname - student username
6730: # $type - image type desired
6731: # $client - The socket open on the client.
6732: # Returns:
6733: # 1 - continue processing.
1.317 raeburn 6734:
1.265 albertel 6735: sub student_photo_handler {
6736: my ($cmd, $tail, $client) = @_;
1.317 raeburn 6737: my ($domain,$uname,$ext,$type) = split(/:/, $tail);
1.265 albertel 6738:
1.317 raeburn 6739: my $path=&propath($domain,$uname). '/userfiles/internal/';
6740: my $filename = 'studentphoto.'.$ext;
6741: if ($type eq 'thumbnail') {
6742: $filename = 'studentphoto_tn.'.$ext;
6743: }
6744: if (-e $path.$filename) {
1.265 albertel 6745: &Reply($client,"ok\n","$cmd:$tail");
6746: return 1;
6747: }
6748: &mkpath($path);
1.317 raeburn 6749: my $file;
6750: if ($type eq 'thumbnail') {
1.320 albertel 6751: eval {
6752: local($SIG{__DIE__})='DEFAULT';
6753: $file=&localstudentphoto::fetch_thumbnail($domain,$uname);
6754: };
1.317 raeburn 6755: } else {
6756: $file=&localstudentphoto::fetch($domain,$uname);
6757: }
1.265 albertel 6758: if (!$file) {
6759: &Failure($client,"unavailable\n","$cmd:$tail");
6760: return 1;
6761: }
1.317 raeburn 6762: if (!-e $path.$filename) { &convert_photo($file,$path.$filename); }
6763: if (-e $path.$filename) {
1.265 albertel 6764: &Reply($client,"ok\n","$cmd:$tail");
6765: return 1;
6766: }
6767: &Failure($client,"unable_to_convert\n","$cmd:$tail");
6768: return 1;
6769: }
6770: ®ister_handler("studentphoto", \&student_photo_handler, 0, 1, 0);
1.246 foxr 6771:
1.361 raeburn 6772: sub inst_usertypes_handler {
6773: my ($cmd, $domain, $client) = @_;
6774: my $res;
6775: my $userinput = $cmd.":".$domain; # For logging purposes.
1.370 albertel 6776: my (%typeshash,@order,$result);
6777: eval {
6778: local($SIG{__DIE__})='DEFAULT';
6779: $result=&localenroll::inst_usertypes($domain,\%typeshash,\@order);
6780: };
6781: if ($result eq 'ok') {
1.361 raeburn 6782: if (keys(%typeshash) > 0) {
6783: foreach my $key (keys(%typeshash)) {
6784: $res.=&escape($key).'='.&escape($typeshash{$key}).'&';
6785: }
6786: }
6787: $res=~s/\&$//;
6788: $res .= ':';
6789: if (@order > 0) {
6790: foreach my $item (@order) {
6791: $res .= &escape($item).'&';
6792: }
6793: }
6794: $res=~s/\&$//;
6795: }
1.387 albertel 6796: &Reply($client, \$res, $userinput);
1.361 raeburn 6797: return 1;
6798: }
6799: ®ister_handler("inst_usertypes", \&inst_usertypes_handler, 0, 1, 0);
6800:
1.264 albertel 6801: # mkpath makes all directories for a file, expects an absolute path with a
6802: # file or a trailing / if just a dir is passed
6803: # returns 1 on success 0 on failure
6804: sub mkpath {
6805: my ($file)=@_;
6806: my @parts=split(/\//,$file,-1);
6807: my $now=$parts[0].'/'.$parts[1].'/'.$parts[2];
6808: for (my $i=3;$i<= ($#parts-1);$i++) {
1.265 albertel 6809: $now.='/'.$parts[$i];
1.264 albertel 6810: if (!-e $now) {
6811: if (!mkdir($now,0770)) { return 0; }
6812: }
6813: }
6814: return 1;
6815: }
6816:
1.207 foxr 6817: #---------------------------------------------------------------
6818: #
6819: # Getting, decoding and dispatching requests:
6820: #
6821: #
6822: # Get a Request:
6823: # Gets a Request message from the client. The transaction
6824: # is defined as a 'line' of text. We remove the new line
6825: # from the text line.
1.226 foxr 6826: #
1.211 albertel 6827: sub get_request {
1.207 foxr 6828: my $input = <$client>;
6829: chomp($input);
1.226 foxr 6830:
1.234 foxr 6831: &Debug("get_request: Request = $input\n");
1.207 foxr 6832:
6833: &status('Processing '.$clientname.':'.$input);
6834:
6835: return $input;
6836: }
1.212 foxr 6837: #---------------------------------------------------------------
6838: #
6839: # Process a request. This sub should shrink as each action
6840: # gets farmed out into a separat sub that is registered
6841: # with the dispatch hash.
6842: #
6843: # Parameters:
6844: # user_input - The request received from the client (lonc).
6845: # Returns:
6846: # true to keep processing, false if caller should exit.
6847: #
6848: sub process_request {
6849: my ($userinput) = @_; # Easier for now to break style than to
6850: # fix all the userinput -> user_input.
6851: my $wasenc = 0; # True if request was encrypted.
6852: # ------------------------------------------------------------ See if encrypted
1.322 albertel 6853: # for command
6854: # sethost:<server>
6855: # <command>:<args>
6856: # we just send it to the processor
6857: # for
6858: # sethost:<server>:<command>:<args>
6859: # we do the implict set host and then do the command
6860: if ($userinput =~ /^sethost:/) {
6861: (my $cmd,my $newid,$userinput) = split(':',$userinput,3);
6862: if (defined($userinput)) {
6863: &sethost("$cmd:$newid");
6864: } else {
6865: $userinput = "$cmd:$newid";
6866: }
6867: }
6868:
1.212 foxr 6869: if ($userinput =~ /^enc/) {
6870: $userinput = decipher($userinput);
6871: $wasenc=1;
6872: if(!$userinput) { # Cipher not defined.
1.251 foxr 6873: &Failure($client, "error: Encrypted data without negotated key\n");
1.212 foxr 6874: return 0;
6875: }
6876: }
6877: Debug("process_request: $userinput\n");
6878:
1.213 foxr 6879: #
6880: # The 'correct way' to add a command to lond is now to
6881: # write a sub to execute it and Add it to the command dispatch
6882: # hash via a call to register_handler.. The comments to that
6883: # sub should give you enough to go on to show how to do this
6884: # along with the examples that are building up as this code
6885: # is getting refactored. Until all branches of the
6886: # if/elseif monster below have been factored out into
6887: # separate procesor subs, if the dispatch hash is missing
6888: # the command keyword, we will fall through to the remainder
6889: # of the if/else chain below in order to keep this thing in
6890: # working order throughout the transmogrification.
6891:
6892: my ($command, $tail) = split(/:/, $userinput, 2);
6893: chomp($command);
6894: chomp($tail);
6895: $tail =~ s/(\r)//; # This helps people debugging with e.g. telnet.
1.214 foxr 6896: $command =~ s/(\r)//; # And this too for parameterless commands.
6897: if(!$tail) {
6898: $tail =""; # defined but blank.
6899: }
1.213 foxr 6900:
6901: &Debug("Command received: $command, encoded = $wasenc");
6902:
6903: if(defined $Dispatcher{$command}) {
6904:
6905: my $dispatch_info = $Dispatcher{$command};
6906: my $handler = $$dispatch_info[0];
6907: my $need_encode = $$dispatch_info[1];
6908: my $client_types = $$dispatch_info[2];
6909: Debug("Matched dispatch hash: mustencode: $need_encode "
6910: ."ClientType $client_types");
6911:
6912: # Validate the request:
6913:
6914: my $ok = 1;
6915: my $requesterprivs = 0;
6916: if(&isClient()) {
6917: $requesterprivs |= $CLIENT_OK;
6918: }
6919: if(&isManager()) {
6920: $requesterprivs |= $MANAGER_OK;
6921: }
6922: if($need_encode && (!$wasenc)) {
6923: Debug("Must encode but wasn't: $need_encode $wasenc");
6924: $ok = 0;
6925: }
6926: if(($client_types & $requesterprivs) == 0) {
6927: Debug("Client not privileged to do this operation");
6928: $ok = 0;
6929: }
6930:
6931: if($ok) {
6932: Debug("Dispatching to handler $command $tail");
6933: my $keep_going = &$handler($command, $tail, $client);
6934: return $keep_going;
6935: } else {
6936: Debug("Refusing to dispatch because client did not match requirements");
6937: Failure($client, "refused\n", $userinput);
6938: return 1;
6939: }
6940:
6941: }
6942:
1.262 foxr 6943: print $client "unknown_cmd\n";
1.212 foxr 6944: # -------------------------------------------------------------------- complete
6945: Debug("process_request - returning 1");
6946: return 1;
6947: }
1.207 foxr 6948: #
6949: # Decipher encoded traffic
6950: # Parameters:
6951: # input - Encoded data.
6952: # Returns:
6953: # Decoded data or undef if encryption key was not yet negotiated.
6954: # Implicit input:
6955: # cipher - This global holds the negotiated encryption key.
6956: #
1.211 albertel 6957: sub decipher {
1.207 foxr 6958: my ($input) = @_;
6959: my $output = '';
1.212 foxr 6960:
6961:
1.207 foxr 6962: if($cipher) {
6963: my($enc, $enclength, $encinput) = split(/:/, $input);
6964: for(my $encidx = 0; $encidx < length($encinput); $encidx += 16) {
6965: $output .=
6966: $cipher->decrypt(pack("H16", substr($encinput, $encidx, 16)));
6967: }
6968: return substr($output, 0, $enclength);
6969: } else {
6970: return undef;
6971: }
6972: }
6973:
6974: #
6975: # Register a command processor. This function is invoked to register a sub
6976: # to process a request. Once registered, the ProcessRequest sub can automatically
6977: # dispatch requests to an appropriate sub, and do the top level validity checking
6978: # as well:
6979: # - Is the keyword recognized.
6980: # - Is the proper client type attempting the request.
6981: # - Is the request encrypted if it has to be.
6982: # Parameters:
6983: # $request_name - Name of the request being registered.
6984: # This is the command request that will match
6985: # against the hash keywords to lookup the information
6986: # associated with the dispatch information.
6987: # $procedure - Reference to a sub to call to process the request.
6988: # All subs get called as follows:
6989: # Procedure($cmd, $tail, $replyfd, $key)
6990: # $cmd - the actual keyword that invoked us.
6991: # $tail - the tail of the request that invoked us.
6992: # $replyfd- File descriptor connected to the client
6993: # $must_encode - True if the request must be encoded to be good.
6994: # $client_ok - True if it's ok for a client to request this.
6995: # $manager_ok - True if it's ok for a manager to request this.
6996: # Side effects:
6997: # - On success, the Dispatcher hash has an entry added for the key $RequestName
6998: # - On failure, the program will die as it's a bad internal bug to try to
6999: # register a duplicate command handler.
7000: #
1.211 albertel 7001: sub register_handler {
1.212 foxr 7002: my ($request_name,$procedure,$must_encode, $client_ok,$manager_ok) = @_;
1.207 foxr 7003:
7004: # Don't allow duplication#
7005:
7006: if (defined $Dispatcher{$request_name}) {
7007: die "Attempting to define a duplicate request handler for $request_name\n";
7008: }
7009: # Build the client type mask:
7010:
7011: my $client_type_mask = 0;
7012: if($client_ok) {
7013: $client_type_mask |= $CLIENT_OK;
7014: }
7015: if($manager_ok) {
7016: $client_type_mask |= $MANAGER_OK;
7017: }
7018:
7019: # Enter the hash:
7020:
7021: my @entry = ($procedure, $must_encode, $client_type_mask);
7022:
7023: $Dispatcher{$request_name} = \@entry;
7024:
7025: }
7026:
7027:
7028: #------------------------------------------------------------------
7029:
7030:
7031:
7032:
1.141 foxr 7033: #
1.96 foxr 7034: # Convert an error return code from lcpasswd to a string value.
7035: #
7036: sub lcpasswdstrerror {
7037: my $ErrorCode = shift;
1.97 foxr 7038: if(($ErrorCode < 0) || ($ErrorCode > $lastpwderror)) {
1.96 foxr 7039: return "lcpasswd Unrecognized error return value ".$ErrorCode;
7040: } else {
1.98 foxr 7041: return $passwderrors[$ErrorCode];
1.96 foxr 7042: }
7043: }
7044:
1.23 harris41 7045: # grabs exception and records it to log before exiting
7046: sub catchexception {
1.27 albertel 7047: my ($error)=@_;
1.25 www 7048: $SIG{'QUIT'}='DEFAULT';
7049: $SIG{__DIE__}='DEFAULT';
1.165 albertel 7050: &status("Catching exception");
1.190 albertel 7051: &logthis("<font color='red'>CRITICAL: "
1.373 albertel 7052: ."ABNORMAL EXIT. Child $$ for server ".$perlvar{'lonHostID'}." died through "
1.27 albertel 7053: ."a crash with this error msg->[$error]</font>");
1.57 www 7054: &logthis('Famous last words: '.$status.' - '.$lastlog);
1.27 albertel 7055: if ($client) { print $client "error: $error\n"; }
1.59 www 7056: $server->close();
1.27 albertel 7057: die($error);
1.23 harris41 7058: }
1.63 www 7059: sub timeout {
1.165 albertel 7060: &status("Handling Timeout");
1.190 albertel 7061: &logthis("<font color='red'>CRITICAL: TIME OUT ".$$."</font>");
1.63 www 7062: &catchexception('Timeout');
7063: }
1.22 harris41 7064: # -------------------------------- Set signal handlers to record abnormal exits
7065:
1.226 foxr 7066:
1.22 harris41 7067: $SIG{'QUIT'}=\&catchexception;
7068: $SIG{__DIE__}=\&catchexception;
7069:
1.81 matthew 7070: # ---------------------------------- Read loncapa_apache.conf and loncapa.conf
1.95 harris41 7071: &status("Read loncapa.conf and loncapa_apache.conf");
7072: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
1.141 foxr 7073: %perlvar=%{$perlvarref};
1.80 harris41 7074: undef $perlvarref;
1.19 www 7075:
1.35 harris41 7076: # ----------------------------- Make sure this process is running from user=www
7077: my $wwwid=getpwnam('www');
7078: if ($wwwid!=$<) {
1.489.2.43.2. 1(raebur 7079:4): my $emailto="$perlvar{'lonAdmEMail'} $perlvar{'lonSysEMail'}";
1.134 albertel 7080: my $subj="LON: $currenthostid User ID mismatch";
1.489.2.31 raeburn 7081: system("echo 'User ID mismatch. lond must be run as user www.' |".
7082: " mail -s '$subj' $emailto > /dev/null");
1.35 harris41 7083: exit 1;
7084: }
7085:
1.19 www 7086: # --------------------------------------------- Check if other instance running
7087:
7088: my $pidfile="$perlvar{'lonDaemons'}/logs/lond.pid";
7089:
7090: if (-e $pidfile) {
7091: my $lfh=IO::File->new("$pidfile");
7092: my $pide=<$lfh>;
7093: chomp($pide);
1.29 harris41 7094: if (kill 0 => $pide) { die "already running"; }
1.19 www 7095: }
1.1 albertel 7096:
7097: # ------------------------------------------------------------- Read hosts file
7098:
7099:
7100:
7101: # establish SERVER socket, bind and listen.
7102: $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},
7103: Type => SOCK_STREAM,
7104: Proto => 'tcp',
1.469 foxr 7105: ReuseAddr => 1,
1.1 albertel 7106: Listen => 10 )
1.29 harris41 7107: or die "making socket: $@\n";
1.1 albertel 7108:
7109: # --------------------------------------------------------- Do global variables
7110:
7111: # global variables
7112:
1.134 albertel 7113: my %children = (); # keys are current child process IDs
1.1 albertel 7114:
7115: sub REAPER { # takes care of dead children
7116: $SIG{CHLD} = \&REAPER;
1.165 albertel 7117: &status("Handling child death");
1.178 foxr 7118: my $pid;
7119: do {
7120: $pid = waitpid(-1,&WNOHANG());
7121: if (defined($children{$pid})) {
7122: &logthis("Child $pid died");
7123: delete($children{$pid});
1.183 albertel 7124: } elsif ($pid > 0) {
1.178 foxr 7125: &logthis("Unknown Child $pid died");
7126: }
7127: } while ( $pid > 0 );
7128: foreach my $child (keys(%children)) {
7129: $pid = waitpid($child,&WNOHANG());
7130: if ($pid > 0) {
7131: &logthis("Child $child - $pid looks like we missed it's death");
7132: delete($children{$pid});
7133: }
1.176 albertel 7134: }
1.165 albertel 7135: &status("Finished Handling child death");
1.1 albertel 7136: }
7137:
7138: sub HUNTSMAN { # signal handler for SIGINT
1.165 albertel 7139: &status("Killing children (INT)");
1.1 albertel 7140: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
7141: kill 'INT' => keys %children;
1.59 www 7142: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.1 albertel 7143: my $execdir=$perlvar{'lonDaemons'};
7144: unlink("$execdir/logs/lond.pid");
1.190 albertel 7145: &logthis("<font color='red'>CRITICAL: Shutting down</font>");
1.165 albertel 7146: &status("Done killing children");
1.1 albertel 7147: exit; # clean up with dignity
7148: }
7149:
7150: sub HUPSMAN { # signal handler for SIGHUP
7151: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
1.165 albertel 7152: &status("Killing children for restart (HUP)");
1.1 albertel 7153: kill 'INT' => keys %children;
1.59 www 7154: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.190 albertel 7155: &logthis("<font color='red'>CRITICAL: Restarting</font>");
1.134 albertel 7156: my $execdir=$perlvar{'lonDaemons'};
1.30 harris41 7157: unlink("$execdir/logs/lond.pid");
1.165 albertel 7158: &status("Restarting self (HUP)");
1.1 albertel 7159: exec("$execdir/lond"); # here we go again
7160: }
7161:
1.144 foxr 7162: #
1.148 foxr 7163: # Reload the Apache daemon's state.
1.150 foxr 7164: # This is done by invoking /home/httpd/perl/apachereload
7165: # a setuid perl script that can be root for us to do this job.
1.148 foxr 7166: #
7167: sub ReloadApache {
1.473 raeburn 7168: # --------------------------- Handle case of another apachereload process (locking)
1.474 raeburn 7169: if (&LONCAPA::try_to_lock('/tmp/lock_apachereload')) {
7170: my $execdir = $perlvar{'lonDaemons'};
7171: my $script = $execdir."/apachereload";
7172: system($script);
7173: unlink('/tmp/lock_apachereload'); # Remove the lock file.
7174: }
1.148 foxr 7175: }
7176:
7177: #
1.144 foxr 7178: # Called in response to a USR2 signal.
7179: # - Reread hosts.tab
7180: # - All children connected to hosts that were removed from hosts.tab
7181: # are killed via SIGINT
7182: # - All children connected to previously existing hosts are sent SIGUSR1
7183: # - Our internal hosts hash is updated to reflect the new contents of
7184: # hosts.tab causing connections from hosts added to hosts.tab to
7185: # now be honored.
7186: #
7187: sub UpdateHosts {
1.165 albertel 7188: &status("Reload hosts.tab");
1.147 foxr 7189: logthis('<font color="blue"> Updating connections </font>');
1.148 foxr 7190: #
7191: # The %children hash has the set of IP's we currently have children
7192: # on. These need to be matched against records in the hosts.tab
7193: # Any ip's no longer in the table get killed off they correspond to
7194: # either dropped or changed hosts. Note that the re-read of the table
7195: # will take care of new and changed hosts as connections come into being.
7196:
1.371 albertel 7197: &Apache::lonnet::reset_hosts_info();
1.148 foxr 7198:
1.368 albertel 7199: foreach my $child (keys(%children)) {
1.148 foxr 7200: my $childip = $children{$child};
1.374 albertel 7201: if ($childip ne '127.0.0.1'
7202: && !defined(&Apache::lonnet::get_hosts_from_ip($childip))) {
1.149 foxr 7203: logthis('<font color="blue"> UpdateHosts killing child '
7204: ." $child for ip $childip </font>");
1.148 foxr 7205: kill('INT', $child);
1.149 foxr 7206: } else {
7207: logthis('<font color="green"> keeping child for ip '
7208: ." $childip (pid=$child) </font>");
1.148 foxr 7209: }
7210: }
7211: ReloadApache;
1.165 albertel 7212: &status("Finished reloading hosts.tab");
1.144 foxr 7213: }
7214:
1.148 foxr 7215:
1.57 www 7216: sub checkchildren {
1.165 albertel 7217: &status("Checking on the children (sending signals)");
1.57 www 7218: &initnewstatus();
7219: &logstatus();
7220: &logthis('Going to check on the children');
1.134 albertel 7221: my $docdir=$perlvar{'lonDocRoot'};
1.61 harris41 7222: foreach (sort keys %children) {
1.221 albertel 7223: #sleep 1;
1.57 www 7224: unless (kill 'USR1' => $_) {
7225: &logthis ('Child '.$_.' is dead');
7226: &logstatus($$.' is dead');
1.221 albertel 7227: delete($children{$_});
1.57 www 7228: }
1.61 harris41 7229: }
1.63 www 7230: sleep 5;
1.212 foxr 7231: $SIG{ALRM} = sub { Debug("timeout");
7232: die "timeout"; };
1.113 albertel 7233: $SIG{__DIE__} = 'DEFAULT';
1.165 albertel 7234: &status("Checking on the children (waiting for reports)");
1.63 www 7235: foreach (sort keys %children) {
7236: unless (-e "$docdir/lon-status/londchld/$_.txt") {
1.113 albertel 7237: eval {
7238: alarm(300);
1.63 www 7239: &logthis('Child '.$_.' did not respond');
1.67 albertel 7240: kill 9 => $_;
1.131 albertel 7241: #$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
7242: #$subj="LON: $currenthostid killed lond process $_";
7243: #my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null`;
7244: #$execdir=$perlvar{'lonDaemons'};
7245: #$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_`;
1.221 albertel 7246: delete($children{$_});
1.113 albertel 7247: alarm(0);
7248: }
1.63 www 7249: }
7250: }
1.113 albertel 7251: $SIG{ALRM} = 'DEFAULT';
1.155 albertel 7252: $SIG{__DIE__} = \&catchexception;
1.165 albertel 7253: &status("Finished checking children");
1.221 albertel 7254: &logthis('Finished Checking children');
1.57 www 7255: }
7256:
1.1 albertel 7257: # --------------------------------------------------------------------- Logging
7258:
7259: sub logthis {
7260: my $message=shift;
7261: my $execdir=$perlvar{'lonDaemons'};
7262: my $fh=IO::File->new(">>$execdir/logs/lond.log");
7263: my $now=time;
7264: my $local=localtime($now);
1.58 www 7265: $lastlog=$local.': '.$message;
1.1 albertel 7266: print $fh "$local ($$): $message\n";
7267: }
7268:
1.77 foxr 7269: # ------------------------- Conditional log if $DEBUG true.
7270: sub Debug {
7271: my $message = shift;
7272: if($DEBUG) {
7273: &logthis($message);
7274: }
7275: }
1.161 foxr 7276:
7277: #
7278: # Sub to do replies to client.. this gives a hook for some
7279: # debug tracing too:
7280: # Parameters:
7281: # fd - File open on client.
7282: # reply - Text to send to client.
7283: # request - Original request from client.
7284: #
7285: sub Reply {
1.192 foxr 7286: my ($fd, $reply, $request) = @_;
1.387 albertel 7287: if (ref($reply)) {
7288: print $fd $$reply;
7289: print $fd "\n";
7290: if ($DEBUG) { Debug("Request was $request Reply was $$reply"); }
7291: } else {
7292: print $fd $reply;
7293: if ($DEBUG) { Debug("Request was $request Reply was $reply"); }
7294: }
1.212 foxr 7295: $Transactions++;
7296: }
7297:
7298:
7299: #
7300: # Sub to report a failure.
7301: # This function:
7302: # - Increments the failure statistic counters.
7303: # - Invokes Reply to send the error message to the client.
7304: # Parameters:
7305: # fd - File descriptor open on the client
7306: # reply - Reply text to emit.
7307: # request - The original request message (used by Reply
7308: # to debug if that's enabled.
7309: # Implicit outputs:
7310: # $Failures- The number of failures is incremented.
7311: # Reply (invoked here) sends a message to the
7312: # client:
7313: #
7314: sub Failure {
7315: my $fd = shift;
7316: my $reply = shift;
7317: my $request = shift;
7318:
7319: $Failures++;
7320: Reply($fd, $reply, $request); # That's simple eh?
1.161 foxr 7321: }
1.57 www 7322: # ------------------------------------------------------------------ Log status
7323:
7324: sub logstatus {
1.178 foxr 7325: &status("Doing logging");
7326: my $docdir=$perlvar{'lonDocRoot'};
7327: {
7328: my $fh=IO::File->new(">$docdir/lon-status/londchld/$$.txt");
1.200 matthew 7329: print $fh $status."\n".$lastlog."\n".time."\n$keymode";
1.178 foxr 7330: $fh->close();
7331: }
1.221 albertel 7332: &status("Finished $$.txt");
7333: {
7334: open(LOG,">>$docdir/lon-status/londstatus.txt");
7335: flock(LOG,LOCK_EX);
7336: print LOG $$."\t".$clientname."\t".$currenthostid."\t"
7337: .$status."\t".$lastlog."\t $keymode\n";
1.275 albertel 7338: flock(LOG,LOCK_UN);
1.221 albertel 7339: close(LOG);
7340: }
1.178 foxr 7341: &status("Finished logging");
1.57 www 7342: }
7343:
7344: sub initnewstatus {
7345: my $docdir=$perlvar{'lonDocRoot'};
7346: my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt");
1.460 foxr 7347: my $now=time();
1.57 www 7348: my $local=localtime($now);
7349: print $fh "LOND status $local - parent $$\n\n";
1.64 www 7350: opendir(DIR,"$docdir/lon-status/londchld");
1.134 albertel 7351: while (my $filename=readdir(DIR)) {
1.64 www 7352: unlink("$docdir/lon-status/londchld/$filename");
7353: }
7354: closedir(DIR);
1.57 www 7355: }
7356:
7357: # -------------------------------------------------------------- Status setting
7358:
7359: sub status {
7360: my $what=shift;
7361: my $now=time;
7362: my $local=localtime($now);
1.178 foxr 7363: $status=$local.': '.$what;
7364: $0='lond: '.$what.' '.$local;
1.57 www 7365: }
1.11 www 7366:
1.13 www 7367: # -------------------------------------------------------------- Talk to lonsql
7368:
1.234 foxr 7369: sub sql_reply {
1.12 harris41 7370: my ($cmd)=@_;
1.234 foxr 7371: my $answer=&sub_sql_reply($cmd);
7372: if ($answer eq 'con_lost') { $answer=&sub_sql_reply($cmd); }
1.12 harris41 7373: return $answer;
7374: }
7375:
1.234 foxr 7376: sub sub_sql_reply {
1.12 harris41 7377: my ($cmd)=@_;
7378: my $unixsock="mysqlsock";
7379: my $peerfile="$perlvar{'lonSockDir'}/$unixsock";
7380: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
7381: Type => SOCK_STREAM,
7382: Timeout => 10)
7383: or return "con_lost";
1.319 www 7384: print $sclient "$cmd:$currentdomainid\n";
1.12 harris41 7385: my $answer=<$sclient>;
7386: chomp($answer);
7387: if (!$answer) { $answer="con_lost"; }
7388: return $answer;
7389: }
7390:
1.1 albertel 7391: # --------------------------------------- Is this the home server of an author?
1.11 www 7392:
1.1 albertel 7393: sub ishome {
7394: my $author=shift;
7395: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
7396: my ($udom,$uname)=split(/\//,$author);
7397: my $proname=propath($udom,$uname);
7398: if (-e $proname) {
7399: return 'owner';
7400: } else {
7401: return 'not_owner';
7402: }
7403: }
7404:
7405: # ======================================================= Continue main program
7406: # ---------------------------------------------------- Fork once and dissociate
7407:
1.134 albertel 7408: my $fpid=fork;
1.1 albertel 7409: exit if $fpid;
1.29 harris41 7410: die "Couldn't fork: $!" unless defined ($fpid);
1.1 albertel 7411:
1.29 harris41 7412: POSIX::setsid() or die "Can't start new session: $!";
1.1 albertel 7413:
7414: # ------------------------------------------------------- Write our PID on disk
7415:
1.134 albertel 7416: my $execdir=$perlvar{'lonDaemons'};
1.1 albertel 7417: open (PIDSAVE,">$execdir/logs/lond.pid");
7418: print PIDSAVE "$$\n";
7419: close(PIDSAVE);
1.190 albertel 7420: &logthis("<font color='red'>CRITICAL: ---------- Starting ----------</font>");
1.57 www 7421: &status('Starting');
1.1 albertel 7422:
1.106 foxr 7423:
1.1 albertel 7424:
7425: # ----------------------------------------------------- Install signal handlers
7426:
1.57 www 7427:
1.1 albertel 7428: $SIG{CHLD} = \&REAPER;
7429: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
7430: $SIG{HUP} = \&HUPSMAN;
1.57 www 7431: $SIG{USR1} = \&checkchildren;
1.144 foxr 7432: $SIG{USR2} = \&UpdateHosts;
1.106 foxr 7433:
1.148 foxr 7434: # Read the host hashes:
1.368 albertel 7435: &Apache::lonnet::load_hosts_tab();
1.447 raeburn 7436: my %iphost = &Apache::lonnet::get_iphost(1);
1.106 foxr 7437:
1.480 raeburn 7438: $dist=`$perlvar{'lonDaemons'}/distprobe`;
1.286 albertel 7439:
1.471 raeburn 7440: my $arch = `uname -i`;
1.475 raeburn 7441: chomp($arch);
1.471 raeburn 7442: if ($arch eq 'unknown') {
7443: $arch = `uname -m`;
1.475 raeburn 7444: chomp($arch);
1.471 raeburn 7445: }
7446:
1.106 foxr 7447: # --------------------------------------------------------------
7448: # Accept connections. When a connection comes in, it is validated
7449: # and if good, a child process is created to process transactions
7450: # along the connection.
7451:
1.1 albertel 7452: while (1) {
1.165 albertel 7453: &status('Starting accept');
1.106 foxr 7454: $client = $server->accept() or next;
1.165 albertel 7455: &status('Accepted '.$client.' off to spawn');
1.386 albertel 7456: make_new_child($client);
1.165 albertel 7457: &status('Finished spawning');
1.1 albertel 7458: }
7459:
1.212 foxr 7460: sub make_new_child {
7461: my $pid;
7462: # my $cipher; # Now global
7463: my $sigset;
1.178 foxr 7464:
1.212 foxr 7465: $client = shift;
7466: &status('Starting new child '.$client);
7467: &logthis('<font color="green"> Attempting to start child ('.$client.
7468: ")</font>");
7469: # block signal for fork
7470: $sigset = POSIX::SigSet->new(SIGINT);
7471: sigprocmask(SIG_BLOCK, $sigset)
7472: or die "Can't block SIGINT for fork: $!\n";
1.178 foxr 7473:
1.212 foxr 7474: die "fork: $!" unless defined ($pid = fork);
1.178 foxr 7475:
1.212 foxr 7476: $client->sockopt(SO_KEEPALIVE, 1); # Enable monitoring of
7477: # connection liveness.
1.178 foxr 7478:
1.212 foxr 7479: #
7480: # Figure out who we're talking to so we can record the peer in
7481: # the pid hash.
7482: #
7483: my $caller = getpeername($client);
7484: my ($port,$iaddr);
7485: if (defined($caller) && length($caller) > 0) {
7486: ($port,$iaddr)=unpack_sockaddr_in($caller);
7487: } else {
7488: &logthis("Unable to determine who caller was, getpeername returned nothing");
7489: }
7490: if (defined($iaddr)) {
7491: $clientip = inet_ntoa($iaddr);
7492: Debug("Connected with $clientip");
7493: } else {
7494: &logthis("Unable to determine clientip");
7495: $clientip='Unavailable';
7496: }
7497:
7498: if ($pid) {
7499: # Parent records the child's birth and returns.
7500: sigprocmask(SIG_UNBLOCK, $sigset)
7501: or die "Can't unblock SIGINT for fork: $!\n";
7502: $children{$pid} = $clientip;
7503: &status('Started child '.$pid);
1.462 foxr 7504: close($client);
1.212 foxr 7505: return;
7506: } else {
7507: # Child can *not* return from this subroutine.
7508: $SIG{INT} = 'DEFAULT'; # make SIGINT kill us as it did before
7509: $SIG{CHLD} = 'DEFAULT'; #make this default so that pwauth returns
7510: #don't get intercepted
7511: $SIG{USR1}= \&logstatus;
7512: $SIG{ALRM}= \&timeout;
1.468 foxr 7513: #
7514: # Block sigpipe as it gets thrownon socket disconnect and we want to
7515: # deal with that as a read faiure instead.
7516: #
7517: my $blockset = POSIX::SigSet->new(SIGPIPE);
7518: sigprocmask(SIG_BLOCK, $blockset);
7519:
1.212 foxr 7520: $lastlog='Forked ';
7521: $status='Forked';
1.178 foxr 7522:
1.212 foxr 7523: # unblock signals
7524: sigprocmask(SIG_UNBLOCK, $sigset)
7525: or die "Can't unblock SIGINT for fork: $!\n";
1.178 foxr 7526:
1.212 foxr 7527: # my $tmpsnum=0; # Now global
7528: #---------------------------------------------------- kerberos 5 initialization
7529: &Authen::Krb5::init_context();
1.489.2.16 raeburn 7530:
7531: my $no_ets;
1.489.2.43 raeburn 7532: if ($dist =~ /^(?:centos|rhes|scientific|oracle|rocky|alma)(\d+)/) {
1.489.2.16 raeburn 7533: if ($1 >= 7) {
7534: $no_ets = 1;
7535: }
7536: } elsif ($dist =~ /^suse(\d+\.\d+)$/) {
7537: if (($1 eq '9.3') || ($1 >= 12.2)) {
7538: $no_ets = 1;
7539: }
1.489.2.17 raeburn 7540: } elsif ($dist =~ /^sles(\d+)$/) {
7541: if ($1 > 11) {
7542: $no_ets = 1;
7543: }
1.489.2.16 raeburn 7544: } elsif ($dist =~ /^fedora(\d+)$/) {
7545: if ($1 < 7) {
7546: $no_ets = 1;
7547: }
7548: }
7549: unless ($no_ets) {
7550: &Authen::Krb5::init_ets();
7551: }
1.209 albertel 7552:
1.212 foxr 7553: &status('Accepted connection');
7554: # =============================================================================
7555: # do something with the connection
7556: # -----------------------------------------------------------------------------
7557: # see if we know client and 'check' for spoof IP by ineffective challenge
1.178 foxr 7558:
1.278 albertel 7559: my $outsideip=$clientip;
7560: if ($clientip eq '127.0.0.1') {
1.368 albertel 7561: $outsideip=&Apache::lonnet::get_host_ip($perlvar{'lonHostID'});
1.278 albertel 7562: }
1.412 foxr 7563: &ReadManagerTable();
1.368 albertel 7564: my $clientrec=defined(&Apache::lonnet::get_hosts_from_ip($outsideip));
1.278 albertel 7565: my $ismanager=($managers{$outsideip} ne undef);
1.432 raeburn 7566: $clientname = "[unknown]";
1.212 foxr 7567: if($clientrec) { # Establish client type.
7568: $ConnectionType = "client";
1.368 albertel 7569: $clientname = (&Apache::lonnet::get_hosts_from_ip($outsideip))[-1];
1.212 foxr 7570: if($ismanager) {
7571: $ConnectionType = "both";
7572: }
7573: } else {
7574: $ConnectionType = "manager";
1.278 albertel 7575: $clientname = $managers{$outsideip};
1.212 foxr 7576: }
7577: my $clientok;
1.178 foxr 7578:
1.212 foxr 7579: if ($clientrec || $ismanager) {
7580: &status("Waiting for init from $clientip $clientname");
7581: &logthis('<font color="yellow">INFO: Connection, '.
7582: $clientip.
7583: " ($clientname) connection type = $ConnectionType </font>" );
7584: &status("Connecting $clientip ($clientname))");
7585: my $remotereq=<$client>;
7586: chomp($remotereq);
7587: Debug("Got init: $remotereq");
1.337 albertel 7588:
1.212 foxr 7589: if ($remotereq =~ /^init/) {
7590: &sethost("sethost:$perlvar{'lonHostID'}");
7591: #
7592: # If the remote is attempting a local init... give that a try:
7593: #
1.432 raeburn 7594: (my $i, my $inittype, $clientversion) = split(/:/, $remotereq);
1.489.2.4 raeburn 7595: # For LON-CAPA 2.9, the client session will have sent its LON-CAPA
7596: # version when initiating the connection. For LON-CAPA 2.8 and older,
7597: # the version is retrieved from the global %loncaparevs in lonnet.pm.
7598: # $clientversion contains path to keyfile if $inittype eq 'local'
7599: # it's overridden below in this case
7600: $clientversion ||= $Apache::lonnet::loncaparevs{$clientname};
1.209 albertel 7601:
1.212 foxr 7602: # If the connection type is ssl, but I didn't get my
7603: # certificate files yet, then I'll drop back to
7604: # insecure (if allowed).
7605:
7606: if($inittype eq "ssl") {
7607: my ($ca, $cert) = lonssl::CertificateFile;
7608: my $kfile = lonssl::KeyFile;
7609: if((!$ca) ||
7610: (!$cert) ||
7611: (!$kfile)) {
7612: $inittype = ""; # This forces insecure attempt.
7613: &logthis("<font color=\"blue\"> Certificates not "
7614: ."installed -- trying insecure auth</font>");
1.224 foxr 7615: } else { # SSL certificates are in place so
1.212 foxr 7616: } # Leave the inittype alone.
7617: }
7618:
7619: if($inittype eq "local") {
1.432 raeburn 7620: $clientversion = $perlvar{'lonVersion'};
1.212 foxr 7621: my $key = LocalConnection($client, $remotereq);
7622: if($key) {
7623: Debug("Got local key $key");
7624: $clientok = 1;
7625: my $cipherkey = pack("H32", $key);
7626: $cipher = new IDEA($cipherkey);
7627: print $client "ok:local\n";
1.442 www 7628: &logthis('<font color="green">'
1.212 foxr 7629: . "Successful local authentication </font>");
7630: $keymode = "local"
1.178 foxr 7631: } else {
1.212 foxr 7632: Debug("Failed to get local key");
7633: $clientok = 0;
7634: shutdown($client, 3);
7635: close $client;
1.178 foxr 7636: }
1.212 foxr 7637: } elsif ($inittype eq "ssl") {
7638: my $key = SSLConnection($client);
7639: if ($key) {
7640: $clientok = 1;
7641: my $cipherkey = pack("H32", $key);
7642: $cipher = new IDEA($cipherkey);
7643: &logthis('<font color="green">'
7644: ."Successfull ssl authentication with $clientname </font>");
7645: $keymode = "ssl";
7646:
1.178 foxr 7647: } else {
1.212 foxr 7648: $clientok = 0;
7649: close $client;
1.178 foxr 7650: }
1.212 foxr 7651:
7652: } else {
7653: my $ok = InsecureConnection($client);
7654: if($ok) {
7655: $clientok = 1;
7656: &logthis('<font color="green">'
7657: ."Successful insecure authentication with $clientname </font>");
7658: print $client "ok\n";
7659: $keymode = "insecure";
1.178 foxr 7660: } else {
1.212 foxr 7661: &logthis('<font color="yellow">'
7662: ."Attempted insecure connection disallowed </font>");
7663: close $client;
7664: $clientok = 0;
1.178 foxr 7665: }
7666: }
1.212 foxr 7667: } else {
7668: &logthis(
7669: "<font color='blue'>WARNING: "
7670: ."$clientip failed to initialize: >$remotereq< </font>");
7671: &status('No init '.$clientip);
7672: }
7673: } else {
7674: &logthis(
7675: "<font color='blue'>WARNING: Unknown client $clientip</font>");
7676: &status('Hung up on '.$clientip);
7677: }
7678:
7679: if ($clientok) {
7680: # ---------------- New known client connecting, could mean machine online again
1.368 albertel 7681: if (&Apache::lonnet::get_host_ip($currenthostid) ne $clientip
1.367 albertel 7682: && $clientip ne '127.0.0.1') {
1.375 albertel 7683: &Apache::lonnet::reconlonc($clientname);
1.212 foxr 7684: }
7685: &logthis("<font color='green'>Established connection: $clientname</font>");
7686: &status('Will listen to '.$clientname);
7687: # ------------------------------------------------------------ Process requests
7688: my $keep_going = 1;
7689: my $user_input;
1.448 raeburn 7690: my $clienthost = &Apache::lonnet::hostname($clientname);
7691: my $clientserverhomeID = &Apache::lonnet::get_server_homeID($clienthost);
7692: $clienthomedom = &Apache::lonnet::host_domain($clientserverhomeID);
1.212 foxr 7693: while(($user_input = get_request) && $keep_going) {
7694: alarm(120);
7695: Debug("Main: Got $user_input\n");
7696: $keep_going = &process_request($user_input);
1.178 foxr 7697: alarm(0);
1.489.2.42 raeburn 7698: &status('Listening to '.$clientname." ($keymode)");
1.161 foxr 7699: }
1.212 foxr 7700:
1.59 www 7701: # --------------------------------------------- client unknown or fishy, refuse
1.212 foxr 7702: } else {
1.161 foxr 7703: print $client "refused\n";
7704: $client->close();
1.190 albertel 7705: &logthis("<font color='blue'>WARNING: "
1.161 foxr 7706: ."Rejected client $clientip, closing connection</font>");
7707: }
1.212 foxr 7708: }
1.161 foxr 7709:
1.1 albertel 7710: # =============================================================================
1.161 foxr 7711:
1.190 albertel 7712: &logthis("<font color='red'>CRITICAL: "
1.161 foxr 7713: ."Disconnect from $clientip ($clientname)</font>");
1.489.2.42 raeburn 7714:
7715:
1.161 foxr 7716: # this exit is VERY important, otherwise the child will become
7717: # a producer of more and more children, forking yourself into
7718: # process death.
7719: exit;
1.106 foxr 7720:
1.78 foxr 7721: }
1.261 foxr 7722: #
7723: # Determine if a user is an author for the indicated domain.
7724: #
7725: # Parameters:
7726: # domain - domain to check in .
7727: # user - Name of user to check.
7728: #
7729: # Return:
7730: # 1 - User is an author for domain.
7731: # 0 - User is not an author for domain.
7732: sub is_author {
7733: my ($domain, $user) = @_;
7734:
7735: &Debug("is_author: $user @ $domain");
7736:
7737: my $hashref = &tie_user_hash($domain, $user, "roles",
7738: &GDBM_READER());
7739:
7740: # Author role should show up as a key /domain/_au
1.78 foxr 7741:
1.321 albertel 7742: my $value;
1.487 foxr 7743: if ($hashref) {
1.78 foxr 7744:
1.487 foxr 7745: my $key = "/$domain/_au";
7746: if (defined($hashref)) {
7747: $value = $hashref->{$key};
7748: if(!untie_user_hash($hashref)) {
7749: return 'error: ' . ($!+0)." untie (GDBM) Failed";
7750: }
7751: }
7752:
7753: if(defined($value)) {
7754: &Debug("$user @ $domain is an author");
7755: }
7756: } else {
7757: return 'error: '.($!+0)." tie (GDBM) Failed";
1.261 foxr 7758: }
7759:
7760: return defined($value);
7761: }
1.78 foxr 7762: #
7763: # Checks to see if the input roleput request was to set
1.482 www 7764: # an author role. If so, creates construction space
1.78 foxr 7765: # Parameters:
7766: # request - The request sent to the rolesput subchunk.
7767: # We're looking for /domain/_au
7768: # domain - The domain in which the user is having roles doctored.
7769: # user - Name of the user for which the role is being put.
7770: # authtype - The authentication type associated with the user.
7771: #
1.289 albertel 7772: sub manage_permissions {
1.192 foxr 7773: my ($request, $domain, $user, $authtype) = @_;
1.78 foxr 7774: # See if the request is of the form /$domain/_au
1.289 albertel 7775: if($request =~ /^(\/\Q$domain\E\/_au)$/) { # It's an author rolesput...
1.484 raeburn 7776: my $path=$perlvar{'lonDocRoot'}."/priv/$domain";
1.482 www 7777: unless (-e $path) {
7778: mkdir($path);
7779: }
7780: unless (-e $path.'/'.$user) {
7781: mkdir($path.'/'.$user);
7782: }
1.78 foxr 7783: }
7784: }
1.222 foxr 7785:
7786:
7787: #
7788: # Return the full path of a user password file, whether it exists or not.
7789: # Parameters:
7790: # domain - Domain in which the password file lives.
7791: # user - name of the user.
7792: # Returns:
7793: # Full passwd path:
7794: #
7795: sub password_path {
7796: my ($domain, $user) = @_;
1.264 albertel 7797: return &propath($domain, $user).'/passwd';
1.222 foxr 7798: }
7799:
7800: # Password Filename
7801: # Returns the path to a passwd file given domain and user... only if
7802: # it exists.
7803: # Parameters:
7804: # domain - Domain in which to search.
7805: # user - username.
7806: # Returns:
7807: # - If the password file exists returns its path.
7808: # - If the password file does not exist, returns undefined.
7809: #
7810: sub password_filename {
7811: my ($domain, $user) = @_;
7812:
7813: Debug ("PasswordFilename called: dom = $domain user = $user");
7814:
7815: my $path = &password_path($domain, $user);
7816: Debug("PasswordFilename got path: $path");
7817: if(-e $path) {
7818: return $path;
7819: } else {
7820: return undef;
7821: }
7822: }
7823:
7824: #
7825: # Rewrite the contents of the user's passwd file.
7826: # Parameters:
7827: # domain - domain of the user.
7828: # name - User's name.
7829: # contents - New contents of the file.
1.489.2.26 raeburn 7830: # saveold - (optional). If true save old file in a passwd.bak file.
1.222 foxr 7831: # Returns:
7832: # 0 - Failed.
7833: # 1 - Success.
7834: #
7835: sub rewrite_password_file {
1.489.2.26 raeburn 7836: my ($domain, $user, $contents, $saveold) = @_;
1.222 foxr 7837:
7838: my $file = &password_filename($domain, $user);
7839: if (defined $file) {
1.489.2.26 raeburn 7840: if ($saveold) {
7841: my $bakfile = $file.'.bak';
7842: if (CopyFile($file,$bakfile)) {
7843: chmod(0400,$bakfile);
7844: &logthis("Old password saved in passwd.bak for internally authenticated user: $user:$domain");
7845: } else {
7846: &logthis("Failed to save old password in passwd.bak for internally authenticated user: $user:$domain");
7847: }
7848: }
1.222 foxr 7849: my $pf = IO::File->new(">$file");
7850: if($pf) {
7851: print $pf "$contents\n";
7852: return 1;
7853: } else {
7854: return 0;
7855: }
7856: } else {
7857: return 0;
7858: }
7859:
7860: }
7861:
1.78 foxr 7862: #
1.222 foxr 7863: # get_auth_type - Determines the authorization type of a user in a domain.
1.78 foxr 7864:
7865: # Returns the authorization type or nouser if there is no such user.
7866: #
1.436 raeburn 7867: sub get_auth_type {
1.192 foxr 7868: my ($domain, $user) = @_;
1.78 foxr 7869:
1.222 foxr 7870: Debug("get_auth_type( $domain, $user ) \n");
1.78 foxr 7871: my $proname = &propath($domain, $user);
7872: my $passwdfile = "$proname/passwd";
7873: if( -e $passwdfile ) {
7874: my $pf = IO::File->new($passwdfile);
7875: my $realpassword = <$pf>;
7876: chomp($realpassword);
1.79 foxr 7877: Debug("Password info = $realpassword\n");
1.78 foxr 7878: my ($authtype, $contentpwd) = split(/:/, $realpassword);
1.79 foxr 7879: Debug("Authtype = $authtype, content = $contentpwd\n");
1.259 raeburn 7880: return "$authtype:$contentpwd";
1.224 foxr 7881: } else {
1.79 foxr 7882: Debug("Returning nouser");
1.78 foxr 7883: return "nouser";
7884: }
1.1 albertel 7885: }
7886:
1.220 foxr 7887: #
7888: # Validate a user given their domain, name and password. This utility
7889: # function is used by both AuthenticateHandler and ChangePasswordHandler
7890: # to validate the login credentials of a user.
7891: # Parameters:
7892: # $domain - The domain being logged into (this is required due to
7893: # the capability for multihomed systems.
7894: # $user - The name of the user being validated.
7895: # $password - The user's propoposed password.
7896: #
7897: # Returns:
7898: # 1 - The domain,user,pasword triplet corresponds to a valid
7899: # user.
7900: # 0 - The domain,user,password triplet is not a valid user.
7901: #
7902: sub validate_user {
1.396 raeburn 7903: my ($domain, $user, $password, $checkdefauth) = @_;
1.220 foxr 7904:
7905: # Why negative ~pi you may well ask? Well this function is about
7906: # authentication, and therefore very important to get right.
7907: # I've initialized the flag that determines whether or not I've
7908: # validated correctly to a value it's not supposed to get.
7909: # At the end of this function. I'll ensure that it's not still that
7910: # value so we don't just wind up returning some accidental value
7911: # as a result of executing an unforseen code path that
1.249 foxr 7912: # did not set $validated. At the end of valid execution paths,
7913: # validated shoule be 1 for success or 0 for failuer.
1.220 foxr 7914:
7915: my $validated = -3.14159;
7916:
7917: # How we authenticate is determined by the type of authentication
7918: # the user has been assigned. If the authentication type is
7919: # "nouser", the user does not exist so we will return 0.
7920:
1.222 foxr 7921: my $contents = &get_auth_type($domain, $user);
1.220 foxr 7922: my ($howpwd, $contentpwd) = split(/:/, $contents);
7923:
7924: my $null = pack("C",0); # Used by kerberos auth types.
7925:
1.395 raeburn 7926: if ($howpwd eq 'nouser') {
1.396 raeburn 7927: if ($checkdefauth) {
7928: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
7929: if ($domdefaults{'auth_def'} eq 'localauth') {
7930: $howpwd = $domdefaults{'auth_def'};
7931: $contentpwd = $domdefaults{'auth_arg_def'};
7932: } elsif ((($domdefaults{'auth_def'} eq 'krb4') ||
7933: ($domdefaults{'auth_def'} eq 'krb5')) &&
7934: ($domdefaults{'auth_arg_def'} ne '')) {
1.489.2.43.2. (raeburn 7935:): #
7936:): # Don't attempt authentication for username and password supplied
7937:): # for user without an account if username contains @ to avoid
7938:): # call to &Authen::Krb5::parse_name() which will result in con_lost
7939:): #
7940:): unless ($user =~ /\@/) {
7941:): $howpwd = $domdefaults{'auth_def'};
7942:): $contentpwd = $domdefaults{'auth_arg_def'};
7943:): }
1.396 raeburn 7944: }
1.395 raeburn 7945: }
1.489.2.26 raeburn 7946: }
1.220 foxr 7947: if ($howpwd ne 'nouser') {
7948: if($howpwd eq "internal") { # Encrypted is in local password file.
1.489.2.21 raeburn 7949: if (length($contentpwd) == 13) {
7950: $validated = (crypt($password,$contentpwd) eq $contentpwd);
7951: if ($validated) {
1.489.2.26 raeburn 7952: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
7953: if ($domdefaults{'intauth_switch'}) {
7954: my $ncpass = &hash_passwd($domain,$password);
7955: my $saveold;
7956: if ($domdefaults{'intauth_switch'} == 2) {
7957: $saveold = 1;
7958: }
7959: if (&rewrite_password_file($domain,$user,"$howpwd:$ncpass",$saveold)) {
7960: &update_passwd_history($user,$domain,$howpwd,'conversion');
7961: &logthis("Validated password hashed with bcrypt for $user:$domain");
7962: }
1.489.2.21 raeburn 7963: }
7964: }
7965: } else {
1.489.2.26 raeburn 7966: $validated = &check_internal_passwd($password,$contentpwd,$domain,$user);
1.489.2.21 raeburn 7967: }
1.220 foxr 7968: }
7969: elsif ($howpwd eq "unix") { # User is a normal unix user.
7970: $contentpwd = (getpwnam($user))[1];
7971: if($contentpwd) {
7972: if($contentpwd eq 'x') { # Shadow password file...
7973: my $pwauth_path = "/usr/local/sbin/pwauth";
7974: open PWAUTH, "|$pwauth_path" or
7975: die "Cannot invoke authentication";
7976: print PWAUTH "$user\n$password\n";
7977: close PWAUTH;
7978: $validated = ! $?;
7979:
7980: } else { # Passwords in /etc/passwd.
7981: $validated = (crypt($password,
7982: $contentpwd) eq $contentpwd);
7983: }
7984: } else {
7985: $validated = 0;
7986: }
1.439 raeburn 7987: } elsif ($howpwd eq "krb4") { # user is in kerberos 4 auth. domain.
7988: my $checkwithkrb5 = 0;
7989: if ($dist =~/^fedora(\d+)$/) {
7990: if ($1 > 11) {
7991: $checkwithkrb5 = 1;
7992: }
7993: } elsif ($dist =~ /^suse([\d.]+)$/) {
7994: if ($1 > 11.1) {
7995: $checkwithkrb5 = 1;
7996: }
7997: }
7998: if ($checkwithkrb5) {
7999: $validated = &krb5_authen($password,$null,$user,$contentpwd);
8000: } else {
8001: $validated = &krb4_authen($password,$null,$user,$contentpwd);
8002: }
1.224 foxr 8003: } elsif ($howpwd eq "krb5") { # User is in kerberos 5 auth. domain.
1.439 raeburn 8004: $validated = &krb5_authen($password,$null,$user,$contentpwd);
1.224 foxr 8005: } elsif ($howpwd eq "localauth") {
1.220 foxr 8006: # Authenticate via installation specific authentcation method:
8007: $validated = &localauth::localauth($user,
8008: $password,
1.353 albertel 8009: $contentpwd,
8010: $domain);
1.358 albertel 8011: if ($validated < 0) {
1.357 albertel 8012: &logthis("localauth for $contentpwd $user:$domain returned a $validated");
8013: $validated = 0;
8014: }
1.224 foxr 8015: } else { # Unrecognized auth is also bad.
1.220 foxr 8016: $validated = 0;
8017: }
8018: } else {
8019: $validated = 0;
8020: }
8021: #
8022: # $validated has the correct stat of the authentication:
8023: #
8024:
8025: unless ($validated != -3.14159) {
1.249 foxr 8026: # I >really really< want to know if this happens.
8027: # since it indicates that user authentication is badly
8028: # broken in some code path.
8029: #
8030: die "ValidateUser - failed to set the value of validated $domain, $user $password";
1.220 foxr 8031: }
8032: return $validated;
8033: }
8034:
1.489.2.21 raeburn 8035: sub check_internal_passwd {
1.489.2.26 raeburn 8036: my ($plainpass,$stored,$domain,$user) = @_;
1.489.2.21 raeburn 8037: my (undef,$method,@rest) = split(/!/,$stored);
1.489.2.26 raeburn 8038: if ($method eq 'bcrypt') {
1.489.2.21 raeburn 8039: my $result = &hash_passwd($domain,$plainpass,@rest);
8040: if ($result ne $stored) {
8041: return 0;
8042: }
1.489.2.26 raeburn 8043: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
8044: if ($domdefaults{'intauth_check'}) {
8045: # Upgrade to a larger number of rounds if necessary
8046: my $defaultcost = $domdefaults{'intauth_cost'};
8047: if (($defaultcost eq '') || ($defaultcost =~ /D/)) {
8048: $defaultcost = 10;
8049: }
8050: if (int($rest[0])<int($defaultcost)) {
8051: if ($domdefaults{'intauth_check'} == 1) {
8052: my $ncpass = &hash_passwd($domain,$plainpass);
8053: if (&rewrite_password_file($domain,$user,"internal:$ncpass")) {
8054: &update_passwd_history($user,$domain,'internal','update cost');
8055: &logthis("Validated password hashed with bcrypt for $user:$domain");
8056: }
8057: return 1;
8058: } elsif ($domdefaults{'intauth_check'} == 2) {
8059: return 0;
8060: }
8061: }
8062: } else {
8063: return 1;
1.489.2.21 raeburn 8064: }
8065: }
8066: return 0;
8067: }
8068:
8069: sub get_last_authchg {
8070: my ($domain,$user) = @_;
8071: my $lastmod;
8072: my $logname = &propath($domain,$user).'/passwd.log';
8073: if (-e "$logname") {
8074: $lastmod = (stat("$logname"))[9];
8075: }
8076: return $lastmod;
8077: }
8078:
1.439 raeburn 8079: sub krb4_authen {
8080: my ($password,$null,$user,$contentpwd) = @_;
8081: my $validated = 0;
8082: if (!($password =~ /$null/) ) { # Null password not allowed.
8083: eval {
8084: require Authen::Krb4;
8085: };
8086: if (!$@) {
8087: my $k4error = &Authen::Krb4::get_pw_in_tkt($user,
8088: "",
8089: $contentpwd,,
8090: 'krbtgt',
8091: $contentpwd,
8092: 1,
8093: $password);
8094: if(!$k4error) {
8095: $validated = 1;
8096: } else {
8097: $validated = 0;
8098: &logthis('krb4: '.$user.', '.$contentpwd.', '.
8099: &Authen::Krb4::get_err_txt($Authen::Krb4::error));
8100: }
8101: } else {
8102: $validated = krb5_authen($password,$null,$user,$contentpwd);
8103: }
8104: }
8105: return $validated;
8106: }
8107:
8108: sub krb5_authen {
8109: my ($password,$null,$user,$contentpwd) = @_;
8110: my $validated = 0;
8111: if(!($password =~ /$null/)) { # Null password not allowed.
8112: my $krbclient = &Authen::Krb5::parse_name($user.'@'
8113: .$contentpwd);
8114: my $krbservice = "krbtgt/".$contentpwd."\@".$contentpwd;
8115: my $krbserver = &Authen::Krb5::parse_name($krbservice);
8116: my $credentials= &Authen::Krb5::cc_default();
8117: $credentials->initialize(&Authen::Krb5::parse_name($user.'@'
8118: .$contentpwd));
8119: my $krbreturn;
8120: if (exists(&Authen::Krb5::get_init_creds_password)) {
8121: $krbreturn =
8122: &Authen::Krb5::get_init_creds_password($krbclient,$password,
8123: $krbservice);
8124: $validated = (ref($krbreturn) eq 'Authen::Krb5::Creds');
8125: } else {
8126: $krbreturn =
8127: &Authen::Krb5::get_in_tkt_with_password($krbclient,$krbserver,
8128: $password,$credentials);
8129: $validated = ($krbreturn == 1);
8130: }
8131: if (!$validated) {
8132: &logthis('krb5: '.$user.', '.$contentpwd.', '.
8133: &Authen::Krb5::error());
8134: }
8135: }
8136: return $validated;
8137: }
1.220 foxr 8138:
1.84 albertel 8139: sub addline {
8140: my ($fname,$hostid,$ip,$newline)=@_;
8141: my $contents;
8142: my $found=0;
1.355 albertel 8143: my $expr='^'.quotemeta($hostid).':'.quotemeta($ip).':';
1.134 albertel 8144: my $sh;
1.84 albertel 8145: if ($sh=IO::File->new("$fname.subscription")) {
8146: while (my $subline=<$sh>) {
8147: if ($subline !~ /$expr/) {$contents.= $subline;} else {$found=1;}
8148: }
8149: $sh->close();
8150: }
8151: $sh=IO::File->new(">$fname.subscription");
8152: if ($contents) { print $sh $contents; }
8153: if ($newline) { print $sh $newline; }
8154: $sh->close();
8155: return $found;
1.86 www 8156: }
8157:
1.234 foxr 8158: sub get_chat {
1.324 raeburn 8159: my ($cdom,$cname,$udom,$uname,$group)=@_;
1.310 albertel 8160:
1.87 www 8161: my @entries=();
1.324 raeburn 8162: my $namespace = 'nohist_chatroom';
8163: my $namespace_inroom = 'nohist_inchatroom';
1.335 albertel 8164: if ($group ne '') {
1.324 raeburn 8165: $namespace .= '_'.$group;
8166: $namespace_inroom .= '_'.$group;
8167: }
8168: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 8169: &GDBM_READER());
8170: if ($hashref) {
8171: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.311 albertel 8172: &untie_user_hash($hashref);
1.123 www 8173: }
1.124 www 8174: my @participants=();
1.134 albertel 8175: my $cutoff=time-60;
1.324 raeburn 8176: $hashref = &tie_user_hash($cdom, $cname, $namespace_inroom,
1.310 albertel 8177: &GDBM_WRCREAT());
8178: if ($hashref) {
8179: $hashref->{$uname.':'.$udom}=time;
8180: foreach my $user (sort(keys(%$hashref))) {
8181: if ($hashref->{$user}>$cutoff) {
8182: push(@participants, 'active_participant:'.$user);
1.123 www 8183: }
8184: }
1.311 albertel 8185: &untie_user_hash($hashref);
1.86 www 8186: }
1.124 www 8187: return (@participants,@entries);
1.86 www 8188: }
8189:
1.234 foxr 8190: sub chat_add {
1.324 raeburn 8191: my ($cdom,$cname,$newchat,$group)=@_;
1.88 albertel 8192: my @entries=();
1.142 www 8193: my $time=time;
1.324 raeburn 8194: my $namespace = 'nohist_chatroom';
8195: my $logfile = 'chatroom.log';
1.335 albertel 8196: if ($group ne '') {
1.324 raeburn 8197: $namespace .= '_'.$group;
8198: $logfile = 'chatroom_'.$group.'.log';
8199: }
8200: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 8201: &GDBM_WRCREAT());
8202: if ($hashref) {
8203: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.88 albertel 8204: my ($lastid)=($entries[$#entries]=~/^(\w+)\:/);
8205: my ($thentime,$idnum)=split(/\_/,$lastid);
8206: my $newid=$time.'_000000';
8207: if ($thentime==$time) {
8208: $idnum=~s/^0+//;
8209: $idnum++;
8210: $idnum=substr('000000'.$idnum,-6,6);
8211: $newid=$time.'_'.$idnum;
8212: }
1.310 albertel 8213: $hashref->{$newid}=$newchat;
1.88 albertel 8214: my $expired=$time-3600;
1.310 albertel 8215: foreach my $comment (keys(%$hashref)) {
8216: my ($thistime) = ($comment=~/(\d+)\_/);
1.88 albertel 8217: if ($thistime<$expired) {
1.310 albertel 8218: delete $hashref->{$comment};
1.88 albertel 8219: }
8220: }
1.310 albertel 8221: {
8222: my $proname=&propath($cdom,$cname);
1.324 raeburn 8223: if (open(CHATLOG,">>$proname/$logfile")) {
1.310 albertel 8224: print CHATLOG ("$time:".&unescape($newchat)."\n");
8225: }
8226: close(CHATLOG);
1.142 www 8227: }
1.311 albertel 8228: &untie_user_hash($hashref);
1.86 www 8229: }
1.84 albertel 8230: }
8231:
8232: sub unsub {
8233: my ($fname,$clientip)=@_;
8234: my $result;
1.188 foxr 8235: my $unsubs = 0; # Number of successful unsubscribes:
8236:
8237:
8238: # An old way subscriptions were handled was to have a
8239: # subscription marker file:
8240:
8241: Debug("Attempting unlink of $fname.$clientname");
1.161 foxr 8242: if (unlink("$fname.$clientname")) {
1.188 foxr 8243: $unsubs++; # Successful unsub via marker file.
8244: }
8245:
8246: # The more modern way to do it is to have a subscription list
8247: # file:
8248:
1.84 albertel 8249: if (-e "$fname.subscription") {
1.161 foxr 8250: my $found=&addline($fname,$clientname,$clientip,'');
1.188 foxr 8251: if ($found) {
8252: $unsubs++;
8253: }
8254: }
8255:
8256: # If either or both of these mechanisms succeeded in unsubscribing a
8257: # resource we can return ok:
8258:
8259: if($unsubs) {
8260: $result = "ok\n";
1.84 albertel 8261: } else {
1.188 foxr 8262: $result = "not_subscribed\n";
1.84 albertel 8263: }
1.188 foxr 8264:
1.84 albertel 8265: return $result;
8266: }
8267:
1.101 www 8268: sub currentversion {
8269: my $fname=shift;
8270: my $version=-1;
8271: my $ulsdir='';
8272: if ($fname=~/^(.+)\/[^\/]+$/) {
8273: $ulsdir=$1;
8274: }
1.114 albertel 8275: my ($fnamere1,$fnamere2);
8276: # remove version if already specified
1.101 www 8277: $fname=~s/\.\d+\.(\w+(?:\.meta)*)$/\.$1/;
1.114 albertel 8278: # get the bits that go before and after the version number
8279: if ( $fname=~/^(.*\.)(\w+(?:\.meta)*)$/ ) {
8280: $fnamere1=$1;
8281: $fnamere2='.'.$2;
8282: }
1.101 www 8283: if (-e $fname) { $version=1; }
8284: if (-e $ulsdir) {
1.134 albertel 8285: if(-d $ulsdir) {
8286: if (opendir(LSDIR,$ulsdir)) {
1.489.2.43.2. 0(raebur 8287:3): if (-e $fname) {
8288:3): $version=0;
8289:3): }
1.134 albertel 8290: my $ulsfn;
8291: while ($ulsfn=readdir(LSDIR)) {
1.101 www 8292: # see if this is a regular file (ignore links produced earlier)
1.134 albertel 8293: my $thisfile=$ulsdir.'/'.$ulsfn;
8294: unless (-l $thisfile) {
1.160 www 8295: if ($thisfile=~/\Q$fnamere1\E(\d+)\Q$fnamere2\E$/) {
1.134 albertel 8296: if ($1>$version) { $version=$1; }
8297: }
8298: }
8299: }
8300: closedir(LSDIR);
8301: $version++;
8302: }
8303: }
8304: }
8305: return $version;
1.101 www 8306: }
8307:
8308: sub thisversion {
8309: my $fname=shift;
8310: my $version=-1;
8311: if ($fname=~/\.(\d+)\.\w+(?:\.meta)*$/) {
8312: $version=$1;
8313: }
8314: return $version;
8315: }
8316:
1.84 albertel 8317: sub subscribe {
8318: my ($userinput,$clientip)=@_;
8319: my $result;
1.293 albertel 8320: my ($cmd,$fname)=split(/:/,$userinput,2);
1.84 albertel 8321: my $ownership=&ishome($fname);
8322: if ($ownership eq 'owner') {
1.101 www 8323: # explitly asking for the current version?
8324: unless (-e $fname) {
8325: my $currentversion=¤tversion($fname);
8326: if (&thisversion($fname)==$currentversion) {
8327: if ($fname=~/^(.+)\.\d+\.(\w+(?:\.meta)*)$/) {
8328: my $root=$1;
8329: my $extension=$2;
8330: symlink($root.'.'.$extension,
8331: $root.'.'.$currentversion.'.'.$extension);
1.102 www 8332: unless ($extension=~/\.meta$/) {
8333: symlink($root.'.'.$extension.'.meta',
8334: $root.'.'.$currentversion.'.'.$extension.'.meta');
8335: }
1.101 www 8336: }
8337: }
8338: }
1.84 albertel 8339: if (-e $fname) {
8340: if (-d $fname) {
8341: $result="directory\n";
8342: } else {
1.161 foxr 8343: if (-e "$fname.$clientname") {&unsub($fname,$clientip);}
1.134 albertel 8344: my $now=time;
1.161 foxr 8345: my $found=&addline($fname,$clientname,$clientip,
8346: "$clientname:$clientip:$now\n");
1.84 albertel 8347: if ($found) { $result="$fname\n"; }
8348: # if they were subscribed to only meta data, delete that
8349: # subscription, when you subscribe to a file you also get
8350: # the metadata
8351: unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); }
8352: $fname=~s/\/home\/httpd\/html\/res/raw/;
1.476 raeburn 8353: my $protocol = $Apache::lonnet::protocol{$perlvar{'lonHostID'}};
8354: $protocol = 'http' if ($protocol ne 'https');
8355: $fname=$protocol.'://'.&Apache::lonnet::hostname($perlvar{'lonHostID'})."/".$fname;
1.84 albertel 8356: $result="$fname\n";
8357: }
8358: } else {
8359: $result="not_found\n";
8360: }
8361: } else {
8362: $result="rejected\n";
8363: }
8364: return $result;
8365: }
1.287 foxr 8366: # Change the passwd of a unix user. The caller must have
8367: # first verified that the user is a loncapa user.
8368: #
8369: # Parameters:
8370: # user - Unix user name to change.
8371: # pass - New password for the user.
8372: # Returns:
8373: # ok - if success
8374: # other - Some meaningfule error message string.
8375: # NOTE:
8376: # invokes a setuid script to change the passwd.
8377: sub change_unix_password {
8378: my ($user, $pass) = @_;
8379:
8380: &Debug("change_unix_password");
8381: my $execdir=$perlvar{'lonDaemons'};
8382: &Debug("Opening lcpasswd pipeline");
8383: my $pf = IO::File->new("|$execdir/lcpasswd > "
8384: ."$perlvar{'lonDaemons'}"
8385: ."/logs/lcpasswd.log");
8386: print $pf "$user\n$pass\n$pass\n";
8387: close $pf;
8388: my $err = $?;
8389: return ($err < @passwderrors) ? $passwderrors[$err] :
8390: "pwchange_falure - unknown error";
8391:
8392:
8393: }
8394:
1.91 albertel 8395:
8396: sub make_passwd_file {
1.489.2.21 raeburn 8397: my ($uname,$udom,$umode,$npass,$passfilename,$action)=@_;
1.390 raeburn 8398: my $result="ok";
1.91 albertel 8399: if ($umode eq 'krb4' or $umode eq 'krb5') {
8400: {
8401: my $pf = IO::File->new(">$passfilename");
1.261 foxr 8402: if ($pf) {
8403: print $pf "$umode:$npass\n";
1.489.2.21 raeburn 8404: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 8405: } else {
8406: $result = "pass_file_failed_error";
8407: }
1.91 albertel 8408: }
8409: } elsif ($umode eq 'internal') {
1.489.2.21 raeburn 8410: my $ncpass = &hash_passwd($udom,$npass);
1.91 albertel 8411: {
8412: &Debug("Creating internal auth");
8413: my $pf = IO::File->new(">$passfilename");
1.261 foxr 8414: if($pf) {
8415: print $pf "internal:$ncpass\n";
1.489.2.21 raeburn 8416: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 8417: } else {
8418: $result = "pass_file_failed_error";
8419: }
1.91 albertel 8420: }
8421: } elsif ($umode eq 'localauth') {
8422: {
8423: my $pf = IO::File->new(">$passfilename");
1.261 foxr 8424: if($pf) {
8425: print $pf "localauth:$npass\n";
1.489.2.21 raeburn 8426: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 8427: } else {
8428: $result = "pass_file_failed_error";
8429: }
1.91 albertel 8430: }
8431: } elsif ($umode eq 'unix') {
1.489.2.8 raeburn 8432: &logthis(">>>Attempt to create unix account blocked -- unix auth not available for new users.");
8433: $result="no_new_unix_accounts";
1.91 albertel 8434: } elsif ($umode eq 'none') {
8435: {
1.223 foxr 8436: my $pf = IO::File->new("> $passfilename");
1.261 foxr 8437: if($pf) {
8438: print $pf "none:\n";
8439: } else {
8440: $result = "pass_file_failed_error";
8441: }
1.91 albertel 8442: }
8443: } else {
1.390 raeburn 8444: $result="auth_mode_error";
1.91 albertel 8445: }
8446: return $result;
1.121 albertel 8447: }
8448:
1.265 albertel 8449: sub convert_photo {
8450: my ($start,$dest)=@_;
8451: system("convert $start $dest");
8452: }
8453:
1.121 albertel 8454: sub sethost {
8455: my ($remotereq) = @_;
8456: my (undef,$hostid)=split(/:/,$remotereq);
1.322 albertel 8457: # ignore sethost if we are already correct
8458: if ($hostid eq $currenthostid) {
8459: return 'ok';
8460: }
8461:
1.121 albertel 8462: if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; }
1.368 albertel 8463: if (&Apache::lonnet::get_host_ip($perlvar{'lonHostID'})
8464: eq &Apache::lonnet::get_host_ip($hostid)) {
1.200 matthew 8465: $currenthostid =$hostid;
1.369 albertel 8466: $currentdomainid=&Apache::lonnet::host_domain($hostid);
1.443 www 8467: # &logthis("Setting hostid to $hostid, and domain to $currentdomainid");
1.121 albertel 8468: } else {
8469: &logthis("Requested host id $hostid not an alias of ".
8470: $perlvar{'lonHostID'}." refusing connection");
8471: return 'unable_to_set';
8472: }
8473: return 'ok';
8474: }
8475:
8476: sub version {
8477: my ($userinput)=@_;
8478: $remoteVERSION=(split(/:/,$userinput))[1];
8479: return "version:$VERSION";
1.127 albertel 8480: }
1.178 foxr 8481:
1.447 raeburn 8482: sub get_usersession_config {
8483: my ($dom,$name) = @_;
8484: my ($usersessionconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
8485: if (defined($cached)) {
8486: return $usersessionconf;
8487: } else {
8488: my %domconfig = &Apache::lonnet::get_dom('configuration',['usersessions'],$dom);
8489: if (ref($domconfig{'usersessions'}) eq 'HASH') {
8490: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'usersessions'},3600);
8491: return $domconfig{'usersessions'};
8492: }
8493: }
8494: return;
8495: }
1.200 matthew 8496:
1.489.2.27 raeburn 8497: sub get_usersearch_config {
8498: my ($dom,$name) = @_;
8499: my ($usersearchconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
8500: if (defined($cached)) {
8501: return $usersearchconf;
8502: } else {
8503: my %domconfig = &Apache::lonnet::get_dom('configuration',['directorysrch'],$dom);
8504: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'directorysrch'},3600);
8505: return $domconfig{'directorysrch'};
8506: }
8507: return;
8508: }
1.450 raeburn 8509:
1.471 raeburn 8510: sub distro_and_arch {
8511: return $dist.':'.$arch;
8512: }
8513:
1.61 harris41 8514: # ----------------------------------- POD (plain old documentation, CPAN style)
8515:
8516: =head1 NAME
8517:
8518: lond - "LON Daemon" Server (port "LOND" 5663)
8519:
8520: =head1 SYNOPSIS
8521:
1.74 harris41 8522: Usage: B<lond>
8523:
8524: Should only be run as user=www. This is a command-line script which
8525: is invoked by B<loncron>. There is no expectation that a typical user
8526: will manually start B<lond> from the command-line. (In other words,
8527: DO NOT START B<lond> YOURSELF.)
1.61 harris41 8528:
8529: =head1 DESCRIPTION
8530:
1.74 harris41 8531: There are two characteristics associated with the running of B<lond>,
8532: PROCESS MANAGEMENT (starting, stopping, handling child processes)
8533: and SERVER-SIDE ACTIVITIES (password authentication, user creation,
8534: subscriptions, etc). These are described in two large
8535: sections below.
8536:
8537: B<PROCESS MANAGEMENT>
8538:
1.61 harris41 8539: Preforker - server who forks first. Runs as a daemon. HUPs.
8540: Uses IDEA encryption
8541:
1.74 harris41 8542: B<lond> forks off children processes that correspond to the other servers
8543: in the network. Management of these processes can be done at the
8544: parent process level or the child process level.
8545:
8546: B<logs/lond.log> is the location of log messages.
8547:
8548: The process management is now explained in terms of linux shell commands,
8549: subroutines internal to this code, and signal assignments:
8550:
8551: =over 4
8552:
8553: =item *
8554:
8555: PID is stored in B<logs/lond.pid>
8556:
8557: This is the process id number of the parent B<lond> process.
8558:
8559: =item *
8560:
8561: SIGTERM and SIGINT
8562:
8563: Parent signal assignment:
8564: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
8565:
8566: Child signal assignment:
8567: $SIG{INT} = 'DEFAULT'; (and SIGTERM is DEFAULT also)
8568: (The child dies and a SIGALRM is sent to parent, awaking parent from slumber
8569: to restart a new child.)
8570:
8571: Command-line invocations:
8572: B<kill> B<-s> SIGTERM I<PID>
8573: B<kill> B<-s> SIGINT I<PID>
8574:
8575: Subroutine B<HUNTSMAN>:
8576: This is only invoked for the B<lond> parent I<PID>.
8577: This kills all the children, and then the parent.
8578: The B<lonc.pid> file is cleared.
8579:
8580: =item *
8581:
8582: SIGHUP
8583:
8584: Current bug:
8585: This signal can only be processed the first time
8586: on the parent process. Subsequent SIGHUP signals
8587: have no effect.
8588:
8589: Parent signal assignment:
8590: $SIG{HUP} = \&HUPSMAN;
8591:
8592: Child signal assignment:
8593: none (nothing happens)
8594:
8595: Command-line invocations:
8596: B<kill> B<-s> SIGHUP I<PID>
8597:
8598: Subroutine B<HUPSMAN>:
8599: This is only invoked for the B<lond> parent I<PID>,
8600: This kills all the children, and then the parent.
8601: The B<lond.pid> file is cleared.
8602:
8603: =item *
8604:
8605: SIGUSR1
8606:
8607: Parent signal assignment:
8608: $SIG{USR1} = \&USRMAN;
8609:
8610: Child signal assignment:
8611: $SIG{USR1}= \&logstatus;
8612:
8613: Command-line invocations:
8614: B<kill> B<-s> SIGUSR1 I<PID>
8615:
8616: Subroutine B<USRMAN>:
8617: When invoked for the B<lond> parent I<PID>,
8618: SIGUSR1 is sent to all the children, and the status of
8619: each connection is logged.
1.144 foxr 8620:
8621: =item *
8622:
8623: SIGUSR2
8624:
8625: Parent Signal assignment:
8626: $SIG{USR2} = \&UpdateHosts
8627:
8628: Child signal assignment:
8629: NONE
8630:
1.74 harris41 8631:
8632: =item *
8633:
8634: SIGCHLD
8635:
8636: Parent signal assignment:
8637: $SIG{CHLD} = \&REAPER;
8638:
8639: Child signal assignment:
8640: none
8641:
8642: Command-line invocations:
8643: B<kill> B<-s> SIGCHLD I<PID>
8644:
8645: Subroutine B<REAPER>:
8646: This is only invoked for the B<lond> parent I<PID>.
8647: Information pertaining to the child is removed.
8648: The socket port is cleaned up.
8649:
8650: =back
8651:
8652: B<SERVER-SIDE ACTIVITIES>
8653:
8654: Server-side information can be accepted in an encrypted or non-encrypted
8655: method.
8656:
8657: =over 4
8658:
8659: =item ping
8660:
8661: Query a client in the hosts.tab table; "Are you there?"
8662:
8663: =item pong
8664:
8665: Respond to a ping query.
8666:
8667: =item ekey
8668:
8669: Read in encrypted key, make cipher. Respond with a buildkey.
8670:
8671: =item load
8672:
8673: Respond with CPU load based on a computation upon /proc/loadavg.
8674:
8675: =item currentauth
8676:
8677: Reply with current authentication information (only over an
8678: encrypted channel).
8679:
8680: =item auth
8681:
8682: Only over an encrypted channel, reply as to whether a user's
8683: authentication information can be validated.
8684:
8685: =item passwd
8686:
8687: Allow for a password to be set.
8688:
8689: =item makeuser
8690:
8691: Make a user.
8692:
8693: =item passwd
8694:
8695: Allow for authentication mechanism and password to be changed.
8696:
8697: =item home
1.61 harris41 8698:
1.74 harris41 8699: Respond to a question "are you the home for a given user?"
8700:
8701: =item update
8702:
8703: Update contents of a subscribed resource.
8704:
8705: =item unsubscribe
8706:
8707: The server is unsubscribing from a resource.
8708:
8709: =item subscribe
8710:
8711: The server is subscribing to a resource.
8712:
8713: =item log
8714:
8715: Place in B<logs/lond.log>
8716:
8717: =item put
8718:
8719: stores hash in namespace
8720:
1.489.2.2 raeburn 8721: =item rolesput
1.74 harris41 8722:
8723: put a role into a user's environment
8724:
8725: =item get
8726:
8727: returns hash with keys from array
8728: reference filled in from namespace
8729:
8730: =item eget
8731:
8732: returns hash with keys from array
8733: reference filled in from namesp (encrypts the return communication)
8734:
8735: =item rolesget
8736:
8737: get a role from a user's environment
8738:
8739: =item del
8740:
8741: deletes keys out of array from namespace
8742:
8743: =item keys
8744:
8745: returns namespace keys
8746:
8747: =item dump
8748:
8749: dumps the complete (or key matching regexp) namespace into a hash
8750:
8751: =item store
8752:
8753: stores hash permanently
8754: for this url; hashref needs to be given and should be a \%hashname; the
8755: remaining args aren't required and if they aren't passed or are '' they will
8756: be derived from the ENV
8757:
8758: =item restore
8759:
8760: returns a hash for a given url
8761:
8762: =item querysend
8763:
8764: Tells client about the lonsql process that has been launched in response
8765: to a sent query.
8766:
8767: =item queryreply
8768:
8769: Accept information from lonsql and make appropriate storage in temporary
8770: file space.
8771:
8772: =item idput
8773:
8774: Defines usernames as corresponding to IDs. (These "IDs" are unique identifiers
8775: for each student, defined perhaps by the institutional Registrar.)
8776:
8777: =item idget
8778:
8779: Returns usernames corresponding to IDs. (These "IDs" are unique identifiers
8780: for each student, defined perhaps by the institutional Registrar.)
8781:
8782: =item tmpput
8783:
8784: Accept and store information in temporary space.
8785:
8786: =item tmpget
8787:
8788: Send along temporarily stored information.
8789:
8790: =item ls
8791:
8792: List part of a user's directory.
8793:
1.135 foxr 8794: =item pushtable
8795:
8796: Pushes a file in /home/httpd/lonTab directory. Currently limited to:
8797: hosts.tab and domain.tab. The old file is copied to *.tab.backup but
8798: must be restored manually in case of a problem with the new table file.
8799: pushtable requires that the request be encrypted and validated via
8800: ValidateManager. The form of the command is:
8801: enc:pushtable tablename <tablecontents> \n
8802: where pushtable, tablename and <tablecontents> will be encrypted, but \n is a
8803: cleartext newline.
8804:
1.74 harris41 8805: =item Hanging up (exit or init)
8806:
8807: What to do when a client tells the server that they (the client)
8808: are leaving the network.
8809:
8810: =item unknown command
8811:
8812: If B<lond> is sent an unknown command (not in the list above),
8813: it replys to the client "unknown_cmd".
1.135 foxr 8814:
1.74 harris41 8815:
8816: =item UNKNOWN CLIENT
8817:
8818: If the anti-spoofing algorithm cannot verify the client,
8819: the client is rejected (with a "refused" message sent
8820: to the client, and the connection is closed.
8821:
8822: =back
1.61 harris41 8823:
8824: =head1 PREREQUISITES
8825:
8826: IO::Socket
8827: IO::File
8828: Apache::File
8829: POSIX
8830: Crypt::IDEA
8831: LWP::UserAgent()
8832: GDBM_File
8833: Authen::Krb4
1.91 albertel 8834: Authen::Krb5
1.61 harris41 8835:
8836: =head1 COREQUISITES
8837:
8838: =head1 OSNAMES
8839:
8840: linux
8841:
8842: =head1 SCRIPT CATEGORIES
8843:
8844: Server/Process
8845:
8846: =cut
1.409 foxr 8847:
8848:
8849: =pod
8850:
8851: =head1 LOG MESSAGES
8852:
8853: The messages below can be emitted in the lond log. This log is located
8854: in ~httpd/perl/logs/lond.log Many log messages have HTML encapsulation
8855: to provide coloring if examined from inside a web page. Some do not.
8856: Where color is used, the colors are; Red for sometihhng to get excited
8857: about and to follow up on. Yellow for something to keep an eye on to
8858: be sure it does not get worse, Green,and Blue for informational items.
8859:
8860: In the discussions below, sometimes reference is made to ~httpd
8861: when describing file locations. There isn't really an httpd
8862: user, however there is an httpd directory that gets installed in the
8863: place that user home directories go. On linux, this is usually
8864: (always?) /home/httpd.
8865:
8866:
8867: Some messages are colorless. These are usually (not always)
8868: Green/Blue color level messages.
8869:
8870: =over 2
8871:
8872: =item (Red) LocalConnection rejecting non local: <ip> ne 127.0.0.1
8873:
8874: A local connection negotiation was attempted by
8875: a host whose IP address was not 127.0.0.1.
8876: The socket is closed and the child will exit.
8877: lond has three ways to establish an encyrption
8878: key with a client:
8879:
8880: =over 2
8881:
8882: =item local
8883:
8884: The key is written and read from a file.
8885: This is only valid for connections from localhost.
8886:
8887: =item insecure
8888:
8889: The key is generated by the server and
8890: transmitted to the client.
8891:
8892: =item ssl (secure)
8893:
8894: An ssl connection is negotiated with the client,
8895: the key is generated by the server and sent to the
8896: client across this ssl connection before the
8897: ssl connectionis terminated and clear text
8898: transmission resumes.
8899:
8900: =back
8901:
8902: =item (Red) LocalConnection: caller is insane! init = <init> and type = <type>
8903:
8904: The client is local but has not sent an initialization
8905: string that is the literal "init:local" The connection
8906: is closed and the child exits.
8907:
8908: =item Red CRITICAL Can't get key file <error>
8909:
8910: SSL key negotiation is being attempted but the call to
8911: lonssl::KeyFile failed. This usually means that the
8912: configuration file is not correctly defining or protecting
8913: the directories/files lonCertificateDirectory or
8914: lonnetPrivateKey
8915: <error> is a string that describes the reason that
8916: the key file could not be located.
8917:
8918: =item (Red) CRITICAL Can't get certificates <error>
8919:
8920: SSL key negotiation failed because we were not able to retrives our certificate
8921: or the CA's certificate in the call to lonssl::CertificateFile
8922: <error> is the textual reason this failed. Usual reasons:
8923:
8924: =over 2
8925:
8926: =item Apache config file for loncapa incorrect:
8927:
8928: one of the variables
8929: lonCertificateDirectory, lonnetCertificateAuthority, or lonnetCertificate
8930: undefined or incorrect
8931:
8932: =item Permission error:
8933:
8934: The directory pointed to by lonCertificateDirectory is not readable by lond
8935:
8936: =item Permission error:
8937:
8938: Files in the directory pointed to by lonCertificateDirectory are not readable by lond.
8939:
8940: =item Installation error:
8941:
8942: Either the certificate authority file or the certificate have not
8943: been installed in lonCertificateDirectory.
8944:
8945: =item (Red) CRITICAL SSL Socket promotion failed: <err>
8946:
8947: The promotion of the connection from plaintext to SSL failed
8948: <err> is the reason for the failure. There are two
8949: system calls involved in the promotion (one of which failed),
8950: a dup to produce
8951: a second fd on the raw socket over which the encrypted data
8952: will flow and IO::SOcket::SSL->new_from_fd which creates
8953: the SSL connection on the duped fd.
8954:
8955: =item (Blue) WARNING client did not respond to challenge
8956:
8957: This occurs on an insecure (non SSL) connection negotiation request.
8958: lond generates some number from the time, the PID and sends it to
8959: the client. The client must respond by echoing this information back.
8960: If the client does not do so, that's a violation of the challenge
8961: protocols and the connection will be failed.
8962:
8963: =item (Red) No manager table. Nobody can manage!!
8964:
8965: lond has the concept of privileged hosts that
8966: can perform remote management function such
8967: as update the hosts.tab. The manager hosts
8968: are described in the
8969: ~httpd/lonTabs/managers.tab file.
8970: this message is logged if this file is missing.
8971:
8972:
8973: =item (Green) Registering manager <dnsname> as <cluster_name> with <ipaddress>
8974:
8975: Reports the successful parse and registration
8976: of a specific manager.
8977:
8978: =item Green existing host <clustername:dnsname>
8979:
8980: The manager host is already defined in the hosts.tab
8981: the information in that table, rather than the info in the
8982: manager table will be used to determine the manager's ip.
8983:
8984: =item (Red) Unable to craete <filename>
8985:
8986: lond has been asked to create new versions of an administrative
8987: file (by a manager). When this is done, the new file is created
8988: in a temp file and then renamed into place so that there are always
8989: usable administrative files, even if the update fails. This failure
8990: message means that the temp file could not be created.
8991: The update is abandoned, and the old file is available for use.
8992:
8993: =item (Green) CopyFile from <oldname> to <newname> failed
8994:
8995: In an update of administrative files, the copy of the existing file to a
8996: backup file failed. The installation of the new file may still succeed,
8997: but there will not be a back up file to rever to (this should probably
8998: be yellow).
8999:
9000: =item (Green) Pushfile: backed up <oldname> to <newname>
9001:
9002: See above, the backup of the old administrative file succeeded.
9003:
9004: =item (Red) Pushfile: Unable to install <filename> <reason>
9005:
9006: The new administrative file could not be installed. In this case,
9007: the old administrative file is still in use.
9008:
9009: =item (Green) Installed new < filename>.
9010:
9011: The new administrative file was successfullly installed.
9012:
9013: =item (Red) Reinitializing lond pid=<pid>
9014:
9015: The lonc child process <pid> will be sent a USR2
9016: signal.
9017:
9018: =item (Red) Reinitializing self
9019:
9020: We've been asked to re-read our administrative files,and
9021: are doing so.
9022:
9023: =item (Yellow) error:Invalid process identifier <ident>
9024:
9025: A reinit command was received, but the target part of the
9026: command was not valid. It must be either
9027: 'lond' or 'lonc' but was <ident>
9028:
9029: =item (Green) isValideditCommand checking: Command = <command> Key = <key> newline = <newline>
9030:
9031: Checking to see if lond has been handed a valid edit
9032: command. It is possible the edit command is not valid
9033: in that case there are no log messages to indicate that.
9034:
9035: =item Result of password change for <username> pwchange_success
9036:
9037: The password for <username> was
9038: successfully changed.
9039:
9040: =item Unable to open <user> passwd to change password
9041:
9042: Could not rewrite the
9043: internal password file for a user
9044:
9045: =item Result of password change for <user> : <result>
9046:
9047: A unix password change for <user> was attempted
9048: and the pipe returned <result>
9049:
9050: =item LWP GET: <message> for <fname> (<remoteurl>)
9051:
9052: The lightweight process fetch for a resource failed
9053: with <message> the local filename that should
9054: have existed/been created was <fname> the
9055: corresponding URI: <remoteurl> This is emitted in several
9056: places.
9057:
9058: =item Unable to move <transname> to <destname>
9059:
9060: From fetch_user_file_handler - the user file was replicated but could not
9061: be mv'd to its final location.
9062:
9063: =item Looking for <domain> <username>
9064:
9065: From user_has_session_handler - This should be a Debug call instead
9066: it indicates lond is about to check whether the specified user has a
9067: session active on the specified domain on the local host.
9068:
9069: =item Client <ip> (<name>) hanging up: <input>
9070:
9071: lond has been asked to exit by its client. The <ip> and <name> identify the
9072: client systemand <input> is the full exit command sent to the server.
9073:
9074: =item Red CRITICAL: ABNORMAL EXIT. child <pid> for server <hostname> died through a crass with this error->[<message>].
9075:
9076: A lond child terminated. NOte that this termination can also occur when the
9077: child receives the QUIT or DIE signals. <pid> is the process id of the child,
9078: <hostname> the host lond is working for, and <message> the reason the child died
9079: to the best of our ability to get it (I would guess that any numeric value
9080: represents and errno value). This is immediately followed by
9081:
9082: =item Famous last words: Catching exception - <log>
9083:
9084: Where log is some recent information about the state of the child.
9085:
9086: =item Red CRITICAL: TIME OUT <pid>
9087:
9088: Some timeout occured for server <pid>. THis is normally a timeout on an LWP
9089: doing an HTTP::GET.
9090:
9091: =item child <pid> died
9092:
9093: The reaper caught a SIGCHILD for the lond child process <pid>
9094: This should be modified to also display the IP of the dying child
9095: $children{$pid}
9096:
9097: =item Unknown child 0 died
9098: A child died but the wait for it returned a pid of zero which really should not
9099: ever happen.
9100:
9101: =item Child <which> - <pid> looks like we missed it's death
9102:
9103: When a sigchild is received, the reaper process checks all children to see if they are
9104: alive. If children are dying quite quickly, the lack of signal queuing can mean
9105: that a signal hearalds the death of more than one child. If so this message indicates
9106: which other one died. <which> is the ip of a dead child
9107:
9108: =item Free socket: <shutdownretval>
9109:
9110: The HUNTSMAN sub was called due to a SIGINT in a child process. The socket is being shutdown.
9111: for whatever reason, <shutdownretval> is printed but in fact shutdown() is not documented
9112: to return anything. This is followed by:
9113:
9114: =item Red CRITICAL: Shutting down
9115:
9116: Just prior to exit.
9117:
9118: =item Free socket: <shutdownretval>
9119:
9120: The HUPSMAN sub was called due to a SIGHUP. all children get killsed, and lond execs itself.
9121: This is followed by:
9122:
9123: =item (Red) CRITICAL: Restarting
9124:
9125: lond is about to exec itself to restart.
9126:
9127: =item (Blue) Updating connections
9128:
9129: (In response to a USR2). All the children (except the one for localhost)
9130: are about to be killed, the hosts tab reread, and Apache reloaded via apachereload.
9131:
9132: =item (Blue) UpdateHosts killing child <pid> for ip <ip>
9133:
9134: Due to USR2 as above.
9135:
9136: =item (Green) keeping child for ip <ip> (pid = <pid>)
9137:
9138: In response to USR2 as above, the child indicated is not being restarted because
9139: it's assumed that we'll always need a child for the localhost.
9140:
9141:
9142: =item Going to check on the children
9143:
9144: Parent is about to check on the health of the child processes.
9145: Note that this is in response to a USR1 sent to the parent lond.
9146: there may be one or more of the next two messages:
9147:
9148: =item <pid> is dead
9149:
9150: A child that we have in our child hash as alive has evidently died.
9151:
9152: =item Child <pid> did not respond
9153:
9154: In the health check the child <pid> did not update/produce a pid_.txt
9155: file when sent it's USR1 signal. That process is killed with a 9 signal, as it's
9156: assumed to be hung in some un-fixable way.
9157:
9158: =item Finished checking children
9159:
9160: Master processs's USR1 processing is cojmplete.
9161:
9162: =item (Red) CRITICAL: ------- Starting ------
9163:
9164: (There are more '-'s on either side). Lond has forked itself off to
9165: form a new session and is about to start actual initialization.
9166:
9167: =item (Green) Attempting to start child (<client>)
9168:
9169: Started a new child process for <client>. Client is IO::Socket object
9170: connected to the child. This was as a result of a TCP/IP connection from a client.
9171:
9172: =item Unable to determine who caller was, getpeername returned nothing
9173:
9174: In child process initialization. either getpeername returned undef or
9175: a zero sized object was returned. Processing continues, but in my opinion,
9176: this should be cause for the child to exit.
9177:
9178: =item Unable to determine clientip
9179:
9180: In child process initialization. The peer address from getpeername was not defined.
9181: The client address is stored as "Unavailable" and processing continues.
9182:
9183: =item (Yellow) INFO: Connection <ip> <name> connection type = <type>
9184:
9185: In child initialization. A good connectionw as received from <ip>.
9186:
9187: =over 2
9188:
9189: =item <name>
9190:
9191: is the name of the client from hosts.tab.
9192:
9193: =item <type>
9194:
9195: Is the connection type which is either
9196:
9197: =over 2
9198:
9199: =item manager
9200:
9201: The connection is from a manager node, not in hosts.tab
9202:
9203: =item client
9204:
9205: the connection is from a non-manager in the hosts.tab
9206:
9207: =item both
9208:
9209: The connection is from a manager in the hosts.tab.
9210:
9211: =back
9212:
9213: =back
9214:
9215: =item (Blue) Certificates not installed -- trying insecure auth
9216:
9217: One of the certificate file, key file or
9218: certificate authority file could not be found for a client attempting
9219: SSL connection intiation. COnnection will be attemptied in in-secure mode.
9220: (this would be a system with an up to date lond that has not gotten a
9221: certificate from us).
9222:
9223: =item (Green) Successful local authentication
9224:
9225: A local connection successfully negotiated the encryption key.
9226: In this case the IDEA key is in a file (that is hopefully well protected).
9227:
9228: =item (Green) Successful ssl authentication with <client>
9229:
9230: The client (<client> is the peer's name in hosts.tab), has successfully
9231: negotiated an SSL connection with this child process.
9232:
9233: =item (Green) Successful insecure authentication with <client>
9234:
9235:
9236: The client has successfully negotiated an insecure connection withthe child process.
9237:
9238: =item (Yellow) Attempted insecure connection disallowed
9239:
9240: The client attempted and failed to successfully negotiate a successful insecure
9241: connection. This can happen either because the variable londAllowInsecure is false
9242: or undefined, or becuse the child did not successfully echo back the challenge
9243: string.
9244:
9245:
9246: =back
9247:
1.441 raeburn 9248: =back
9249:
1.409 foxr 9250:
9251: =cut
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