Annotation of loncom/lond, revision 1.467.2.6
1.1 albertel 1: #!/usr/bin/perl
2: # The LearningOnline Network
3: # lond "LON Daemon" Server (port "LOND" 5663)
1.60 www 4: #
1.467.2.6! raeburn 5: # $Id: lond,v 1.467.2.5 2011/07/28 19:42:18 raeburn Exp $
1.60 www 6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
1.167 foxr 13: # the Free Software Foundation; either version 2 of the License, or
1.60 www 14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
1.178 foxr 23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
1.60 www 24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
1.161 foxr 27:
28:
1.60 www 29: # http://www.lon-capa.org/
30: #
1.54 harris41 31:
1.134 albertel 32: use strict;
1.80 harris41 33: use lib '/home/httpd/lib/perl/';
1.325 albertel 34: use LONCAPA;
1.80 harris41 35: use LONCAPA::Configuration;
36:
1.1 albertel 37: use IO::Socket;
38: use IO::File;
1.126 albertel 39: #use Apache::File;
1.1 albertel 40: use POSIX;
41: use Crypt::IDEA;
42: use LWP::UserAgent();
1.347 raeburn 43: use Digest::MD5 qw(md5_hex);
1.3 www 44: use GDBM_File;
1.91 albertel 45: use Authen::Krb5;
1.49 albertel 46: use localauth;
1.193 raeburn 47: use localenroll;
1.265 albertel 48: use localstudentphoto;
1.143 foxr 49: use File::Copy;
1.292 albertel 50: use File::Find;
1.200 matthew 51: use LONCAPA::lonlocal;
52: use LONCAPA::lonssl;
1.221 albertel 53: use Fcntl qw(:flock);
1.383 raeburn 54: use Apache::lonnet;
1.467.2.3 raeburn 55: use Mail::Send;
1.1 albertel 56:
1.463 foxr 57: my $DEBUG = 0; # Non zero to enable debug log entries.
1.77 foxr 58:
1.57 www 59: my $status='';
60: my $lastlog='';
61:
1.467.2.6! raeburn 62: my $VERSION='$Revision: 1.467.2.5 $'; #' stupid emacs
1.121 albertel 63: my $remoteVERSION;
1.214 foxr 64: my $currenthostid="default";
1.115 albertel 65: my $currentdomainid;
1.134 albertel 66:
67: my $client;
1.200 matthew 68: my $clientip; # IP address of client.
69: my $clientname; # LonCAPA name of client.
1.448 raeburn 70: my $clientversion; # LonCAPA version running on client.
71: my $clienthomedom; # LonCAPA domain of homeID for client.
72: # primary library server.
1.140 foxr 73:
1.134 albertel 74: my $server;
1.200 matthew 75:
76: my $keymode;
1.198 foxr 77:
1.207 foxr 78: my $cipher; # Cipher key negotiated with client
79: my $tmpsnum = 0; # Id of tmpputs.
80:
1.178 foxr 81: #
82: # Connection type is:
83: # client - All client actions are allowed
84: # manager - only management functions allowed.
85: # both - Both management and client actions are allowed
86: #
1.161 foxr 87:
1.178 foxr 88: my $ConnectionType;
1.161 foxr 89:
1.178 foxr 90: my %managers; # Ip -> manager names
1.161 foxr 91:
1.178 foxr 92: my %perlvar; # Will have the apache conf defined perl vars.
1.134 albertel 93:
1.178 foxr 94: #
1.207 foxr 95: # The hash below is used for command dispatching, and is therefore keyed on the request keyword.
96: # Each element of the hash contains a reference to an array that contains:
97: # A reference to a sub that executes the request corresponding to the keyword.
98: # A flag that is true if the request must be encoded to be acceptable.
99: # A mask with bits as follows:
100: # CLIENT_OK - Set when the function is allowed by ordinary clients
101: # MANAGER_OK - Set when the function is allowed to manager clients.
102: #
103: my $CLIENT_OK = 1;
104: my $MANAGER_OK = 2;
105: my %Dispatcher;
106:
107:
108: #
1.178 foxr 109: # The array below are password error strings."
110: #
111: my $lastpwderror = 13; # Largest error number from lcpasswd.
112: my @passwderrors = ("ok",
1.287 foxr 113: "pwchange_failure - lcpasswd must be run as user 'www'",
114: "pwchange_failure - lcpasswd got incorrect number of arguments",
115: "pwchange_failure - lcpasswd did not get the right nubmer of input text lines",
116: "pwchange_failure - lcpasswd too many simultaneous pwd changes in progress",
117: "pwchange_failure - lcpasswd User does not exist.",
118: "pwchange_failure - lcpasswd Incorrect current passwd",
119: "pwchange_failure - lcpasswd Unable to su to root.",
120: "pwchange_failure - lcpasswd Cannot set new passwd.",
121: "pwchange_failure - lcpasswd Username has invalid characters",
122: "pwchange_failure - lcpasswd Invalid characters in password",
123: "pwchange_failure - lcpasswd User already exists",
124: "pwchange_failure - lcpasswd Something went wrong with user addition.",
125: "pwchange_failure - lcpasswd Password mismatch",
126: "pwchange_failure - lcpasswd Error filename is invalid");
1.97 foxr 127:
128:
1.178 foxr 129: # The array below are lcuseradd error strings.:
1.97 foxr 130:
1.178 foxr 131: my $lastadderror = 13;
132: my @adderrors = ("ok",
133: "User ID mismatch, lcuseradd must run as user www",
134: "lcuseradd Incorrect number of command line parameters must be 3",
135: "lcuseradd Incorrect number of stdinput lines, must be 3",
136: "lcuseradd Too many other simultaneous pwd changes in progress",
137: "lcuseradd User does not exist",
138: "lcuseradd Unable to make www member of users's group",
139: "lcuseradd Unable to su to root",
140: "lcuseradd Unable to set password",
1.377 albertel 141: "lcuseradd Username has invalid characters",
1.178 foxr 142: "lcuseradd Password has an invalid character",
143: "lcuseradd User already exists",
144: "lcuseradd Could not add user.",
145: "lcuseradd Password mismatch");
1.97 foxr 146:
1.96 foxr 147:
1.412 foxr 148: # This array are the errors from lcinstallfile:
149:
150: my @installerrors = ("ok",
151: "Initial user id of client not that of www",
152: "Usage error, not enough command line arguments",
153: "Source file name does not exist",
154: "Destination file name does not exist",
155: "Some file operation failed",
156: "Invalid table filename."
157: );
1.207 foxr 158:
159: #
160: # Statistics that are maintained and dislayed in the status line.
161: #
1.212 foxr 162: my $Transactions = 0; # Number of attempted transactions.
163: my $Failures = 0; # Number of transcations failed.
1.207 foxr 164:
165: # ResetStatistics:
166: # Resets the statistics counters:
167: #
168: sub ResetStatistics {
169: $Transactions = 0;
170: $Failures = 0;
171: }
172:
1.200 matthew 173: #------------------------------------------------------------------------
174: #
175: # LocalConnection
176: # Completes the formation of a locally authenticated connection.
177: # This function will ensure that the 'remote' client is really the
178: # local host. If not, the connection is closed, and the function fails.
179: # If so, initcmd is parsed for the name of a file containing the
180: # IDEA session key. The fie is opened, read, deleted and the session
181: # key returned to the caller.
182: #
183: # Parameters:
184: # $Socket - Socket open on client.
185: # $initcmd - The full text of the init command.
186: #
187: # Returns:
188: # IDEA session key on success.
189: # undef on failure.
190: #
191: sub LocalConnection {
192: my ($Socket, $initcmd) = @_;
1.373 albertel 193: Debug("Attempting local connection: $initcmd client: $clientip");
1.277 albertel 194: if($clientip ne "127.0.0.1") {
1.200 matthew 195: &logthis('<font color="red"> LocalConnection rejecting non local: '
1.373 albertel 196: ."$clientip ne 127.0.0.1 </font>");
1.200 matthew 197: close $Socket;
198: return undef;
1.224 foxr 199: } else {
1.200 matthew 200: chomp($initcmd); # Get rid of \n in filename.
201: my ($init, $type, $name) = split(/:/, $initcmd);
202: Debug(" Init command: $init $type $name ");
203:
204: # Require that $init = init, and $type = local: Otherwise
205: # the caller is insane:
206:
207: if(($init ne "init") && ($type ne "local")) {
208: &logthis('<font color = "red"> LocalConnection: caller is insane! '
209: ."init = $init, and type = $type </font>");
210: close($Socket);;
211: return undef;
212:
213: }
214: # Now get the key filename:
215:
216: my $IDEAKey = lonlocal::ReadKeyFile($name);
217: return $IDEAKey;
218: }
219: }
220: #------------------------------------------------------------------------------
221: #
222: # SSLConnection
223: # Completes the formation of an ssh authenticated connection. The
224: # socket is promoted to an ssl socket. If this promotion and the associated
225: # certificate exchange are successful, the IDEA key is generated and sent
226: # to the remote peer via the SSL tunnel. The IDEA key is also returned to
227: # the caller after the SSL tunnel is torn down.
228: #
229: # Parameters:
230: # Name Type Purpose
231: # $Socket IO::Socket::INET Plaintext socket.
232: #
233: # Returns:
234: # IDEA key on success.
235: # undef on failure.
236: #
237: sub SSLConnection {
238: my $Socket = shift;
239:
240: Debug("SSLConnection: ");
241: my $KeyFile = lonssl::KeyFile();
242: if(!$KeyFile) {
243: my $err = lonssl::LastError();
244: &logthis("<font color=\"red\"> CRITICAL"
245: ."Can't get key file $err </font>");
246: return undef;
247: }
248: my ($CACertificate,
249: $Certificate) = lonssl::CertificateFile();
250:
251:
252: # If any of the key, certificate or certificate authority
253: # certificate filenames are not defined, this can't work.
254:
255: if((!$Certificate) || (!$CACertificate)) {
256: my $err = lonssl::LastError();
257: &logthis("<font color=\"red\"> CRITICAL"
258: ."Can't get certificates: $err </font>");
259:
260: return undef;
261: }
262: Debug("Key: $KeyFile CA: $CACertificate Cert: $Certificate");
263:
264: # Indicate to our peer that we can procede with
265: # a transition to ssl authentication:
266:
267: print $Socket "ok:ssl\n";
268:
269: Debug("Approving promotion -> ssl");
270: # And do so:
271:
272: my $SSLSocket = lonssl::PromoteServerSocket($Socket,
273: $CACertificate,
274: $Certificate,
275: $KeyFile);
276: if(! ($SSLSocket) ) { # SSL socket promotion failed.
277: my $err = lonssl::LastError();
278: &logthis("<font color=\"red\"> CRITICAL "
279: ."SSL Socket promotion failed: $err </font>");
280: return undef;
281: }
282: Debug("SSL Promotion successful");
283:
284: #
285: # The only thing we'll use the socket for is to send the IDEA key
286: # to the peer:
287:
288: my $Key = lonlocal::CreateCipherKey();
289: print $SSLSocket "$Key\n";
290:
291: lonssl::Close($SSLSocket);
292:
293: Debug("Key exchange complete: $Key");
294:
295: return $Key;
296: }
297: #
298: # InsecureConnection:
299: # If insecure connections are allowd,
300: # exchange a challenge with the client to 'validate' the
301: # client (not really, but that's the protocol):
302: # We produce a challenge string that's sent to the client.
303: # The client must then echo the challenge verbatim to us.
304: #
305: # Parameter:
306: # Socket - Socket open on the client.
307: # Returns:
308: # 1 - success.
309: # 0 - failure (e.g.mismatch or insecure not allowed).
310: #
311: sub InsecureConnection {
312: my $Socket = shift;
313:
314: # Don't even start if insecure connections are not allowed.
315:
316: if(! $perlvar{londAllowInsecure}) { # Insecure connections not allowed.
317: return 0;
318: }
319:
320: # Fabricate a challenge string and send it..
321:
322: my $challenge = "$$".time; # pid + time.
323: print $Socket "$challenge\n";
324: &status("Waiting for challenge reply");
325:
326: my $answer = <$Socket>;
327: $answer =~s/\W//g;
328: if($challenge eq $answer) {
329: return 1;
1.224 foxr 330: } else {
1.200 matthew 331: logthis("<font color='blue'>WARNING client did not respond to challenge</font>");
332: &status("No challenge reqply");
333: return 0;
334: }
335:
336:
337: }
1.251 foxr 338: #
339: # Safely execute a command (as long as it's not a shel command and doesn
340: # not require/rely on shell escapes. The function operates by doing a
341: # a pipe based fork and capturing stdout and stderr from the pipe.
342: #
343: # Formal Parameters:
344: # $line - A line of text to be executed as a command.
345: # Returns:
346: # The output from that command. If the output is multiline the caller
347: # must know how to split up the output.
348: #
349: #
350: sub execute_command {
351: my ($line) = @_;
352: my @words = split(/\s/, $line); # Bust the command up into words.
353: my $output = "";
354:
355: my $pid = open(CHILD, "-|");
356:
357: if($pid) { # Parent process
358: Debug("In parent process for execute_command");
359: my @data = <CHILD>; # Read the child's outupt...
360: close CHILD;
361: foreach my $output_line (@data) {
362: Debug("Adding $output_line");
363: $output .= $output_line; # Presumably has a \n on it.
364: }
365:
366: } else { # Child process
367: close (STDERR);
368: open (STDERR, ">&STDOUT");# Combine stderr, and stdout...
369: exec(@words); # won't return.
370: }
371: return $output;
372: }
373:
1.200 matthew 374:
1.140 foxr 375: # GetCertificate: Given a transaction that requires a certificate,
376: # this function will extract the certificate from the transaction
377: # request. Note that at this point, the only concept of a certificate
378: # is the hostname to which we are connected.
379: #
380: # Parameter:
381: # request - The request sent by our client (this parameterization may
382: # need to change when we really use a certificate granting
383: # authority.
384: #
385: sub GetCertificate {
386: my $request = shift;
387:
388: return $clientip;
389: }
1.161 foxr 390:
1.178 foxr 391: #
392: # Return true if client is a manager.
393: #
394: sub isManager {
395: return (($ConnectionType eq "manager") || ($ConnectionType eq "both"));
396: }
397: #
398: # Return tru if client can do client functions
399: #
400: sub isClient {
401: return (($ConnectionType eq "client") || ($ConnectionType eq "both"));
402: }
1.161 foxr 403:
404:
1.156 foxr 405: #
406: # ReadManagerTable: Reads in the current manager table. For now this is
407: # done on each manager authentication because:
408: # - These authentications are not frequent
409: # - This allows dynamic changes to the manager table
410: # without the need to signal to the lond.
411: #
412: sub ReadManagerTable {
413:
1.412 foxr 414: &Debug("Reading manager table");
1.156 foxr 415: # Clean out the old table first..
416:
1.166 foxr 417: foreach my $key (keys %managers) {
418: delete $managers{$key};
419: }
420:
421: my $tablename = $perlvar{'lonTabDir'}."/managers.tab";
422: if (!open (MANAGERS, $tablename)) {
1.467.2.3 raeburn 423: my $hostname = &Apache::lonnet::hostname($perlvar{'lonHostID'});
424: if (&Apache::lonnet::is_LC_dns($hostname)) {
425: &logthis('<font color="red">No manager table. Nobody can manage!!</font>');
426: }
427: return;
1.166 foxr 428: }
429: while(my $host = <MANAGERS>) {
430: chomp($host);
431: if ($host =~ "^#") { # Comment line.
432: next;
433: }
1.368 albertel 434: if (!defined &Apache::lonnet::get_host_ip($host)) { # This is a non cluster member
1.161 foxr 435: # The entry is of the form:
436: # cluname:hostname
437: # cluname - A 'cluster hostname' is needed in order to negotiate
438: # the host key.
439: # hostname- The dns name of the host.
440: #
1.166 foxr 441: my($cluname, $dnsname) = split(/:/, $host);
442:
443: my $ip = gethostbyname($dnsname);
444: if(defined($ip)) { # bad names don't deserve entry.
445: my $hostip = inet_ntoa($ip);
446: $managers{$hostip} = $cluname;
447: logthis('<font color="green"> registering manager '.
448: "$dnsname as $cluname with $hostip </font>\n");
449: }
450: } else {
451: logthis('<font color="green"> existing host'." $host</font>\n");
1.467.2.3 raeburn 452: $managers{&Apache::lonnet::get_host_ip($host)} = $host; # Use info from cluster tab if cluster memeber
1.166 foxr 453: }
454: }
1.156 foxr 455: }
1.140 foxr 456:
457: #
458: # ValidManager: Determines if a given certificate represents a valid manager.
459: # in this primitive implementation, the 'certificate' is
460: # just the connecting loncapa client name. This is checked
461: # against a valid client list in the configuration.
462: #
463: #
464: sub ValidManager {
465: my $certificate = shift;
466:
1.163 foxr 467: return isManager;
1.140 foxr 468: }
469: #
1.143 foxr 470: # CopyFile: Called as part of the process of installing a
471: # new configuration file. This function copies an existing
472: # file to a backup file.
473: # Parameters:
474: # oldfile - Name of the file to backup.
475: # newfile - Name of the backup file.
476: # Return:
477: # 0 - Failure (errno has failure reason).
478: # 1 - Success.
479: #
480: sub CopyFile {
1.192 foxr 481:
482: my ($oldfile, $newfile) = @_;
1.143 foxr 483:
1.281 matthew 484: if (! copy($oldfile,$newfile)) {
485: return 0;
1.143 foxr 486: }
1.281 matthew 487: chmod(0660, $newfile);
488: return 1;
1.143 foxr 489: }
1.157 foxr 490: #
491: # Host files are passed out with externally visible host IPs.
492: # If, for example, we are behind a fire-wall or NAT host, our
493: # internally visible IP may be different than the externally
494: # visible IP. Therefore, we always adjust the contents of the
495: # host file so that the entry for ME is the IP that we believe
496: # we have. At present, this is defined as the entry that
497: # DNS has for us. If by some chance we are not able to get a
498: # DNS translation for us, then we assume that the host.tab file
499: # is correct.
500: # BUGBUGBUG - in the future, we really should see if we can
501: # easily query the interface(s) instead.
502: # Parameter(s):
503: # contents - The contents of the host.tab to check.
504: # Returns:
505: # newcontents - The adjusted contents.
506: #
507: #
508: sub AdjustHostContents {
509: my $contents = shift;
510: my $adjusted;
511: my $me = $perlvar{'lonHostID'};
512:
1.354 albertel 513: foreach my $line (split(/\n/,$contents)) {
1.467.2.3 raeburn 514: if(!(($line eq "") || ($line =~ /^ *\#/) || ($line =~ /^ *$/) ||
515: ($line =~ /^\s*\^/))) {
1.157 foxr 516: chomp($line);
517: my ($id,$domain,$role,$name,$ip,$maxcon,$idleto,$mincon)=split(/:/,$line);
518: if ($id eq $me) {
1.354 albertel 519: my $ip = gethostbyname($name);
520: my $ipnew = inet_ntoa($ip);
521: $ip = $ipnew;
1.157 foxr 522: # Reconstruct the host line and append to adjusted:
523:
1.354 albertel 524: my $newline = "$id:$domain:$role:$name:$ip";
525: if($maxcon ne "") { # Not all hosts have loncnew tuning params
526: $newline .= ":$maxcon:$idleto:$mincon";
527: }
528: $adjusted .= $newline."\n";
1.157 foxr 529:
1.354 albertel 530: } else { # Not me, pass unmodified.
531: $adjusted .= $line."\n";
532: }
1.157 foxr 533: } else { # Blank or comment never re-written.
534: $adjusted .= $line."\n"; # Pass blanks and comments as is.
535: }
1.354 albertel 536: }
537: return $adjusted;
1.157 foxr 538: }
1.143 foxr 539: #
540: # InstallFile: Called to install an administrative file:
1.412 foxr 541: # - The file is created int a temp directory called <name>.tmp
542: # - lcinstall file is called to install the file.
543: # since the web app has no direct write access to the table directory
1.143 foxr 544: #
545: # Parameters:
546: # Name of the file
547: # File Contents.
548: # Return:
549: # nonzero - success.
550: # 0 - failure and $! has an errno.
1.412 foxr 551: # Assumptions:
552: # File installtion is a relatively infrequent
1.143 foxr 553: #
554: sub InstallFile {
1.192 foxr 555:
556: my ($Filename, $Contents) = @_;
1.412 foxr 557: # my $TempFile = $Filename.".tmp";
558: my $exedir = $perlvar{'lonDaemons'};
559: my $tmpdir = $exedir.'/tmp/';
560: my $TempFile = $tmpdir."TempTableFile.tmp";
1.143 foxr 561:
562: # Open the file for write:
563:
564: my $fh = IO::File->new("> $TempFile"); # Write to temp.
565: if(!(defined $fh)) {
566: &logthis('<font color="red"> Unable to create '.$TempFile."</font>");
567: return 0;
568: }
569: # write the contents of the file:
570:
571: print $fh ($Contents);
572: $fh->close; # In case we ever have a filesystem w. locking
573:
1.412 foxr 574: chmod(0664, $TempFile); # Everyone can write it.
575:
576: # Use lcinstall file to put the file in the table directory...
577:
578: &Debug("Opening pipe to $exedir/lcinstallfile $TempFile $Filename");
579: my $pf = IO::File->new("| $exedir/lcinstallfile $TempFile $Filename > $exedir/logs/lcinstallfile.log");
580: close $pf;
581: my $err = $?;
582: &Debug("Status is $err");
583: if ($err != 0) {
584: my $msg = $err;
585: if ($err < @installerrors) {
586: $msg = $installerrors[$err];
587: }
588: &logthis("Install failed for table file $Filename : $msg");
589: return 0;
590: }
591:
592: # Remove the temp file:
1.143 foxr 593:
1.412 foxr 594: unlink($TempFile);
1.143 foxr 595:
596: return 1;
597: }
1.200 matthew 598:
599:
1.169 foxr 600: #
601: # ConfigFileFromSelector: converts a configuration file selector
1.411 foxr 602: # into a configuration file pathname.
1.467.2.3 raeburn 603: # Supports the following file selectors:
604: # hosts, domain, dns_hosts, dns_domain
1.411 foxr 605: #
1.169 foxr 606: #
607: # Parameters:
608: # selector - Configuration file selector.
609: # Returns:
610: # Full path to the file or undef if the selector is invalid.
611: #
612: sub ConfigFileFromSelector {
613: my $selector = shift;
614: my $tablefile;
615:
616: my $tabledir = $perlvar{'lonTabDir'}.'/';
1.467.2.3 raeburn 617: if (($selector eq "hosts") || ($selector eq "domain") ||
618: ($selector eq "dns_hosts") || ($selector eq "dns_domain")) {
619: $tablefile = $tabledir.$selector.'.tab';
1.169 foxr 620: }
621: return $tablefile;
1.143 foxr 622:
1.169 foxr 623: }
1.143 foxr 624: #
1.141 foxr 625: # PushFile: Called to do an administrative push of a file.
626: # - Ensure the file being pushed is one we support.
627: # - Backup the old file to <filename.saved>
628: # - Separate the contents of the new file out from the
629: # rest of the request.
630: # - Write the new file.
631: # Parameter:
632: # Request - The entire user request. This consists of a : separated
633: # string pushfile:tablename:contents.
634: # NOTE: The contents may have :'s in it as well making things a bit
635: # more interesting... but not much.
636: # Returns:
637: # String to send to client ("ok" or "refused" if bad file).
638: #
639: sub PushFile {
640: my $request = shift;
641: my ($command, $filename, $contents) = split(":", $request, 3);
1.412 foxr 642: &Debug("PushFile");
1.141 foxr 643:
644: # At this point in time, pushes for only the following tables are
645: # supported:
646: # hosts.tab ($filename eq host).
647: # domain.tab ($filename eq domain).
1.467.2.3 raeburn 648: # dns_hosts.tab ($filename eq dns_host).
649: # dns_domain.tab ($filename eq dns_domain).
1.141 foxr 650: # Construct the destination filename or reject the request.
651: #
652: # lonManage is supposed to ensure this, however this session could be
653: # part of some elaborate spoof that managed somehow to authenticate.
654: #
655:
1.169 foxr 656:
657: my $tablefile = ConfigFileFromSelector($filename);
658: if(! (defined $tablefile)) {
1.141 foxr 659: return "refused";
660: }
1.412 foxr 661:
1.157 foxr 662: # If the file being pushed is the host file, we adjust the entry for ourself so that the
663: # IP will be our current IP as looked up in dns. Note this is only 99% good as it's possible
664: # to conceive of conditions where we don't have a DNS entry locally. This is possible in a
665: # network sense but it doesn't make much sense in a LonCAPA sense so we ignore (for now)
666: # that possibilty.
667:
668: if($filename eq "host") {
669: $contents = AdjustHostContents($contents);
670: }
671:
1.141 foxr 672: # Install the new file:
673:
1.412 foxr 674: &logthis("Installing new $tablefile contents:\n$contents");
1.143 foxr 675: if(!InstallFile($tablefile, $contents)) {
676: &logthis('<font color="red"> Pushfile: unable to install '
1.145 foxr 677: .$tablefile." $! </font>");
1.143 foxr 678: return "error:$!";
1.224 foxr 679: } else {
1.467.2.3 raeburn 680: &logthis('<font color="green"> Installed new '.$tablefile
681: ." - transaction by: $clientname ($clientip)</font>");
682: my $adminmail = $perlvar{'lonAdmEMail'};
683: my $admindom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
684: if ($admindom ne '') {
685: my %domconfig =
686: &Apache::lonnet::get_dom('configuration',['contacts'],$admindom);
687: if (ref($domconfig{'contacts'}) eq 'HASH') {
688: if ($domconfig{'contacts'}{'adminemail'} ne '') {
689: $adminmail = $domconfig{'contacts'}{'adminemail'};
690: }
691: }
692: }
693: if ($adminmail =~ /^[^\@]+\@[^\@]+$/) {
694: my $msg = new Mail::Send;
695: $msg->to($adminmail);
696: $msg->subject('LON-CAPA DNS update on '.$perlvar{'lonHostID'});
697: $msg->add('Content-type','text/plain; charset=UTF-8');
698: if (my $fh = $msg->open()) {
699: print $fh 'Update to '.$tablefile.' from Cluster Manager '.
700: "$clientname ($clientip)\n";
701: $fh->close;
702: }
703: }
1.143 foxr 704: }
705:
1.141 foxr 706: # Indicate success:
707:
708: return "ok";
709:
710: }
1.145 foxr 711:
712: #
713: # Called to re-init either lonc or lond.
714: #
715: # Parameters:
716: # request - The full request by the client. This is of the form
717: # reinit:<process>
718: # where <process> is allowed to be either of
719: # lonc or lond
720: #
721: # Returns:
722: # The string to be sent back to the client either:
723: # ok - Everything worked just fine.
724: # error:why - There was a failure and why describes the reason.
725: #
726: #
727: sub ReinitProcess {
728: my $request = shift;
729:
1.146 foxr 730:
731: # separate the request (reinit) from the process identifier and
732: # validate it producing the name of the .pid file for the process.
733: #
734: #
735: my ($junk, $process) = split(":", $request);
1.147 foxr 736: my $processpidfile = $perlvar{'lonDaemons'}.'/logs/';
1.146 foxr 737: if($process eq 'lonc') {
738: $processpidfile = $processpidfile."lonc.pid";
1.147 foxr 739: if (!open(PIDFILE, "< $processpidfile")) {
740: return "error:Open failed for $processpidfile";
741: }
742: my $loncpid = <PIDFILE>;
743: close(PIDFILE);
744: logthis('<font color="red"> Reinitializing lonc pid='.$loncpid
745: ."</font>");
746: kill("USR2", $loncpid);
1.146 foxr 747: } elsif ($process eq 'lond') {
1.147 foxr 748: logthis('<font color="red"> Reinitializing self (lond) </font>');
749: &UpdateHosts; # Lond is us!!
1.146 foxr 750: } else {
751: &logthis('<font color="yellow" Invalid reinit request for '.$process
752: ."</font>");
753: return "error:Invalid process identifier $process";
754: }
1.145 foxr 755: return 'ok';
756: }
1.168 foxr 757: # Validate a line in a configuration file edit script:
758: # Validation includes:
759: # - Ensuring the command is valid.
760: # - Ensuring the command has sufficient parameters
761: # Parameters:
762: # scriptline - A line to validate (\n has been stripped for what it's worth).
1.167 foxr 763: #
1.168 foxr 764: # Return:
765: # 0 - Invalid scriptline.
766: # 1 - Valid scriptline
767: # NOTE:
768: # Only the command syntax is checked, not the executability of the
769: # command.
770: #
771: sub isValidEditCommand {
772: my $scriptline = shift;
773:
774: # Line elements are pipe separated:
775:
776: my ($command, $key, $newline) = split(/\|/, $scriptline);
777: &logthis('<font color="green"> isValideditCommand checking: '.
778: "Command = '$command', Key = '$key', Newline = '$newline' </font>\n");
779:
780: if ($command eq "delete") {
781: #
782: # key with no newline.
783: #
784: if( ($key eq "") || ($newline ne "")) {
785: return 0; # Must have key but no newline.
786: } else {
787: return 1; # Valid syntax.
788: }
1.169 foxr 789: } elsif ($command eq "replace") {
1.168 foxr 790: #
791: # key and newline:
792: #
793: if (($key eq "") || ($newline eq "")) {
794: return 0;
795: } else {
796: return 1;
797: }
1.169 foxr 798: } elsif ($command eq "append") {
799: if (($key ne "") && ($newline eq "")) {
800: return 1;
801: } else {
802: return 0;
803: }
1.168 foxr 804: } else {
805: return 0; # Invalid command.
806: }
807: return 0; # Should not get here!!!
808: }
1.169 foxr 809: #
810: # ApplyEdit - Applies an edit command to a line in a configuration
811: # file. It is the caller's responsiblity to validate the
812: # edit line.
813: # Parameters:
814: # $directive - A single edit directive to apply.
815: # Edit directives are of the form:
816: # append|newline - Appends a new line to the file.
817: # replace|key|newline - Replaces the line with key value 'key'
818: # delete|key - Deletes the line with key value 'key'.
819: # $editor - A config file editor object that contains the
820: # file being edited.
821: #
822: sub ApplyEdit {
1.192 foxr 823:
824: my ($directive, $editor) = @_;
1.169 foxr 825:
826: # Break the directive down into its command and its parameters
827: # (at most two at this point. The meaning of the parameters, if in fact
828: # they exist depends on the command).
829:
830: my ($command, $p1, $p2) = split(/\|/, $directive);
831:
832: if($command eq "append") {
833: $editor->Append($p1); # p1 - key p2 null.
834: } elsif ($command eq "replace") {
835: $editor->ReplaceLine($p1, $p2); # p1 - key p2 = newline.
836: } elsif ($command eq "delete") {
837: $editor->DeleteLine($p1); # p1 - key p2 null.
838: } else { # Should not get here!!!
839: die "Invalid command given to ApplyEdit $command"
840: }
841: }
842: #
843: # AdjustOurHost:
844: # Adjusts a host file stored in a configuration file editor object
845: # for the true IP address of this host. This is necessary for hosts
846: # that live behind a firewall.
847: # Those hosts have a publicly distributed IP of the firewall, but
848: # internally must use their actual IP. We assume that a given
849: # host only has a single IP interface for now.
850: # Formal Parameters:
851: # editor - The configuration file editor to adjust. This
852: # editor is assumed to contain a hosts.tab file.
853: # Strategy:
854: # - Figure out our hostname.
855: # - Lookup the entry for this host.
856: # - Modify the line to contain our IP
857: # - Do a replace for this host.
858: sub AdjustOurHost {
859: my $editor = shift;
860:
861: # figure out who I am.
862:
863: my $myHostName = $perlvar{'lonHostID'}; # LonCAPA hostname.
864:
865: # Get my host file entry.
866:
867: my $ConfigLine = $editor->Find($myHostName);
868: if(! (defined $ConfigLine)) {
869: die "AdjustOurHost - no entry for me in hosts file $myHostName";
870: }
871: # figure out my IP:
872: # Use the config line to get my hostname.
873: # Use gethostbyname to translate that into an IP address.
874: #
1.338 albertel 875: my ($id,$domain,$role,$name,$maxcon,$idleto,$mincon) = split(/:/,$ConfigLine);
1.169 foxr 876: #
877: # Reassemble the config line from the elements in the list.
878: # Note that if the loncnew items were not present before, they will
879: # be now even if they would be empty
880: #
881: my $newConfigLine = $id;
1.338 albertel 882: foreach my $item ($domain, $role, $name, $maxcon, $idleto, $mincon) {
1.169 foxr 883: $newConfigLine .= ":".$item;
884: }
885: # Replace the line:
886:
887: $editor->ReplaceLine($id, $newConfigLine);
888:
889: }
890: #
891: # ReplaceConfigFile:
892: # Replaces a configuration file with the contents of a
893: # configuration file editor object.
894: # This is done by:
895: # - Copying the target file to <filename>.old
896: # - Writing the new file to <filename>.tmp
897: # - Moving <filename.tmp> -> <filename>
898: # This laborious process ensures that the system is never without
899: # a configuration file that's at least valid (even if the contents
900: # may be dated).
901: # Parameters:
902: # filename - Name of the file to modify... this is a full path.
903: # editor - Editor containing the file.
904: #
905: sub ReplaceConfigFile {
1.192 foxr 906:
907: my ($filename, $editor) = @_;
1.168 foxr 908:
1.169 foxr 909: CopyFile ($filename, $filename.".old");
910:
911: my $contents = $editor->Get(); # Get the contents of the file.
912:
913: InstallFile($filename, $contents);
914: }
1.168 foxr 915: #
916: #
917: # Called to edit a configuration table file
1.167 foxr 918: # Parameters:
919: # request - The entire command/request sent by lonc or lonManage
920: # Return:
921: # The reply to send to the client.
1.168 foxr 922: #
1.167 foxr 923: sub EditFile {
924: my $request = shift;
925:
926: # Split the command into it's pieces: edit:filetype:script
927:
1.339 albertel 928: my ($cmd, $filetype, $script) = split(/:/, $request,3); # : in script
1.167 foxr 929:
930: # Check the pre-coditions for success:
931:
1.339 albertel 932: if($cmd != "edit") { # Something is amiss afoot alack.
1.167 foxr 933: return "error:edit request detected, but request != 'edit'\n";
934: }
935: if( ($filetype ne "hosts") &&
936: ($filetype ne "domain")) {
937: return "error:edit requested with invalid file specifier: $filetype \n";
938: }
939:
940: # Split the edit script and check it's validity.
1.168 foxr 941:
942: my @scriptlines = split(/\n/, $script); # one line per element.
943: my $linecount = scalar(@scriptlines);
944: for(my $i = 0; $i < $linecount; $i++) {
945: chomp($scriptlines[$i]);
946: if(!isValidEditCommand($scriptlines[$i])) {
947: return "error:edit with bad script line: '$scriptlines[$i]' \n";
948: }
949: }
1.145 foxr 950:
1.167 foxr 951: # Execute the edit operation.
1.169 foxr 952: # - Create a config file editor for the appropriate file and
953: # - execute each command in the script:
954: #
955: my $configfile = ConfigFileFromSelector($filetype);
956: if (!(defined $configfile)) {
957: return "refused\n";
958: }
959: my $editor = ConfigFileEdit->new($configfile);
1.167 foxr 960:
1.169 foxr 961: for (my $i = 0; $i < $linecount; $i++) {
962: ApplyEdit($scriptlines[$i], $editor);
963: }
964: # If the file is the host file, ensure that our host is
965: # adjusted to have our ip:
966: #
967: if($filetype eq "host") {
968: AdjustOurHost($editor);
969: }
970: # Finally replace the current file with our file.
971: #
972: ReplaceConfigFile($configfile, $editor);
1.167 foxr 973:
974: return "ok\n";
975: }
1.207 foxr 976:
1.255 foxr 977: # read_profile
978: #
979: # Returns a set of specific entries from a user's profile file.
980: # this is a utility function that is used by both get_profile_entry and
981: # get_profile_entry_encrypted.
982: #
983: # Parameters:
984: # udom - Domain in which the user exists.
985: # uname - User's account name (loncapa account)
986: # namespace - The profile namespace to open.
987: # what - A set of & separated queries.
988: # Returns:
989: # If all ok: - The string that needs to be shipped back to the user.
990: # If failure - A string that starts with error: followed by the failure
991: # reason.. note that this probabyl gets shipped back to the
992: # user as well.
993: #
994: sub read_profile {
995: my ($udom, $uname, $namespace, $what) = @_;
996:
997: my $hashref = &tie_user_hash($udom, $uname, $namespace,
998: &GDBM_READER());
999: if ($hashref) {
1000: my @queries=split(/\&/,$what);
1.440 raeburn 1001: if ($namespace eq 'roles') {
1002: @queries = map { &unescape($_); } @queries;
1003: }
1.255 foxr 1004: my $qresult='';
1005:
1006: for (my $i=0;$i<=$#queries;$i++) {
1007: $qresult.="$hashref->{$queries[$i]}&"; # Presumably failure gives empty string.
1008: }
1009: $qresult=~s/\&$//; # Remove trailing & from last lookup.
1.311 albertel 1010: if (&untie_user_hash($hashref)) {
1.255 foxr 1011: return $qresult;
1012: } else {
1013: return "error: ".($!+0)." untie (GDBM) Failed";
1014: }
1015: } else {
1016: if ($!+0 == 2) {
1017: return "error:No such file or GDBM reported bad block error";
1018: } else {
1019: return "error: ".($!+0)." tie (GDBM) Failed";
1020: }
1021: }
1022:
1023: }
1.214 foxr 1024: #--------------------- Request Handlers --------------------------------------------
1025: #
1.215 foxr 1026: # By convention each request handler registers itself prior to the sub
1027: # declaration:
1.214 foxr 1028: #
1029:
1.216 foxr 1030: #++
1031: #
1.214 foxr 1032: # Handles ping requests.
1033: # Parameters:
1034: # $cmd - the actual keyword that invoked us.
1035: # $tail - the tail of the request that invoked us.
1036: # $replyfd- File descriptor connected to the client
1037: # Implicit Inputs:
1038: # $currenthostid - Global variable that carries the name of the host we are
1039: # known as.
1040: # Returns:
1041: # 1 - Ok to continue processing.
1042: # 0 - Program should exit.
1043: # Side effects:
1044: # Reply information is sent to the client.
1045: sub ping_handler {
1046: my ($cmd, $tail, $client) = @_;
1047: Debug("$cmd $tail $client .. $currenthostid:");
1048:
1.387 albertel 1049: Reply( $client,\$currenthostid,"$cmd:$tail");
1.214 foxr 1050:
1051: return 1;
1052: }
1053: ®ister_handler("ping", \&ping_handler, 0, 1, 1); # Ping unencoded, client or manager.
1054:
1.216 foxr 1055: #++
1.215 foxr 1056: #
1057: # Handles pong requests. Pong replies with our current host id, and
1058: # the results of a ping sent to us via our lonc.
1059: #
1060: # Parameters:
1061: # $cmd - the actual keyword that invoked us.
1062: # $tail - the tail of the request that invoked us.
1063: # $replyfd- File descriptor connected to the client
1064: # Implicit Inputs:
1065: # $currenthostid - Global variable that carries the name of the host we are
1066: # connected to.
1067: # Returns:
1068: # 1 - Ok to continue processing.
1069: # 0 - Program should exit.
1070: # Side effects:
1071: # Reply information is sent to the client.
1072: sub pong_handler {
1073: my ($cmd, $tail, $replyfd) = @_;
1074:
1.365 albertel 1075: my $reply=&Apache::lonnet::reply("ping",$clientname);
1.215 foxr 1076: &Reply( $replyfd, "$currenthostid:$reply\n", "$cmd:$tail");
1077: return 1;
1078: }
1079: ®ister_handler("pong", \&pong_handler, 0, 1, 1); # Pong unencoded, client or manager
1080:
1.216 foxr 1081: #++
1082: # Called to establish an encrypted session key with the remote client.
1083: # Note that with secure lond, in most cases this function is never
1084: # invoked. Instead, the secure session key is established either
1085: # via a local file that's locked down tight and only lives for a short
1086: # time, or via an ssl tunnel...and is generated from a bunch-o-random
1087: # bits from /dev/urandom, rather than the predictable pattern used by
1088: # by this sub. This sub is only used in the old-style insecure
1089: # key negotiation.
1090: # Parameters:
1091: # $cmd - the actual keyword that invoked us.
1092: # $tail - the tail of the request that invoked us.
1093: # $replyfd- File descriptor connected to the client
1094: # Implicit Inputs:
1095: # $currenthostid - Global variable that carries the name of the host
1096: # known as.
1.448 raeburn 1097: # $clientname - Global variable that carries the name of the host we're connected to.
1.216 foxr 1098: # Returns:
1099: # 1 - Ok to continue processing.
1100: # 0 - Program should exit.
1101: # Implicit Outputs:
1102: # Reply information is sent to the client.
1103: # $cipher is set with a reference to a new IDEA encryption object.
1104: #
1105: sub establish_key_handler {
1106: my ($cmd, $tail, $replyfd) = @_;
1107:
1108: my $buildkey=time.$$.int(rand 100000);
1109: $buildkey=~tr/1-6/A-F/;
1110: $buildkey=int(rand 100000).$buildkey.int(rand 100000);
1111: my $key=$currenthostid.$clientname;
1112: $key=~tr/a-z/A-Z/;
1113: $key=~tr/G-P/0-9/;
1114: $key=~tr/Q-Z/0-9/;
1115: $key=$key.$buildkey.$key.$buildkey.$key.$buildkey;
1116: $key=substr($key,0,32);
1117: my $cipherkey=pack("H32",$key);
1118: $cipher=new IDEA $cipherkey;
1.387 albertel 1119: &Reply($replyfd, \$buildkey, "$cmd:$tail");
1.216 foxr 1120:
1121: return 1;
1122:
1123: }
1124: ®ister_handler("ekey", \&establish_key_handler, 0, 1,1);
1125:
1.217 foxr 1126: # Handler for the load command. Returns the current system load average
1127: # to the requestor.
1128: #
1129: # Parameters:
1130: # $cmd - the actual keyword that invoked us.
1131: # $tail - the tail of the request that invoked us.
1132: # $replyfd- File descriptor connected to the client
1133: # Implicit Inputs:
1134: # $currenthostid - Global variable that carries the name of the host
1135: # known as.
1.448 raeburn 1136: # $clientname - Global variable that carries the name of the host we're connected to.
1.217 foxr 1137: # Returns:
1138: # 1 - Ok to continue processing.
1139: # 0 - Program should exit.
1140: # Side effects:
1141: # Reply information is sent to the client.
1142: sub load_handler {
1143: my ($cmd, $tail, $replyfd) = @_;
1144:
1.463 foxr 1145:
1146:
1.217 foxr 1147: # Get the load average from /proc/loadavg and calculate it as a percentage of
1148: # the allowed load limit as set by the perl global variable lonLoadLim
1149:
1150: my $loadavg;
1151: my $loadfile=IO::File->new('/proc/loadavg');
1152:
1153: $loadavg=<$loadfile>;
1154: $loadavg =~ s/\s.*//g; # Extract the first field only.
1155:
1156: my $loadpercent=100*$loadavg/$perlvar{'lonLoadLim'};
1157:
1.387 albertel 1158: &Reply( $replyfd, \$loadpercent, "$cmd:$tail");
1.217 foxr 1159:
1160: return 1;
1161: }
1.263 albertel 1162: ®ister_handler("load", \&load_handler, 0, 1, 0);
1.217 foxr 1163:
1164: #
1165: # Process the userload request. This sub returns to the client the current
1166: # user load average. It can be invoked either by clients or managers.
1167: #
1168: # Parameters:
1169: # $cmd - the actual keyword that invoked us.
1170: # $tail - the tail of the request that invoked us.
1171: # $replyfd- File descriptor connected to the client
1172: # Implicit Inputs:
1173: # $currenthostid - Global variable that carries the name of the host
1174: # known as.
1.448 raeburn 1175: # $clientname - Global variable that carries the name of the host we're connected to.
1.217 foxr 1176: # Returns:
1177: # 1 - Ok to continue processing.
1178: # 0 - Program should exit
1179: # Implicit inputs:
1180: # whatever the userload() function requires.
1181: # Implicit outputs:
1182: # the reply is written to the client.
1183: #
1184: sub user_load_handler {
1185: my ($cmd, $tail, $replyfd) = @_;
1186:
1.365 albertel 1187: my $userloadpercent=&Apache::lonnet::userload();
1.387 albertel 1188: &Reply($replyfd, \$userloadpercent, "$cmd:$tail");
1.217 foxr 1189:
1190: return 1;
1191: }
1.263 albertel 1192: ®ister_handler("userload", \&user_load_handler, 0, 1, 0);
1.217 foxr 1193:
1.218 foxr 1194: # Process a request for the authorization type of a user:
1195: # (userauth).
1196: #
1197: # Parameters:
1198: # $cmd - the actual keyword that invoked us.
1199: # $tail - the tail of the request that invoked us.
1200: # $replyfd- File descriptor connected to the client
1201: # Returns:
1202: # 1 - Ok to continue processing.
1203: # 0 - Program should exit
1204: # Implicit outputs:
1205: # The user authorization type is written to the client.
1206: #
1207: sub user_authorization_type {
1208: my ($cmd, $tail, $replyfd) = @_;
1209:
1210: my $userinput = "$cmd:$tail";
1211:
1212: # Pull the domain and username out of the command tail.
1.222 foxr 1213: # and call get_auth_type to determine the authentication type.
1.218 foxr 1214:
1215: my ($udom,$uname)=split(/:/,$tail);
1.222 foxr 1216: my $result = &get_auth_type($udom, $uname);
1.218 foxr 1217: if($result eq "nouser") {
1218: &Failure( $replyfd, "unknown_user\n", $userinput);
1219: } else {
1220: #
1.222 foxr 1221: # We only want to pass the second field from get_auth_type
1.218 foxr 1222: # for ^krb.. otherwise we'll be handing out the encrypted
1223: # password for internals e.g.
1224: #
1225: my ($type,$otherinfo) = split(/:/,$result);
1226: if($type =~ /^krb/) {
1227: $type = $result;
1.269 raeburn 1228: } else {
1229: $type .= ':';
1230: }
1.387 albertel 1231: &Reply( $replyfd, \$type, $userinput);
1.218 foxr 1232: }
1233:
1234: return 1;
1235: }
1236: ®ister_handler("currentauth", \&user_authorization_type, 1, 1, 0);
1237:
1238: # Process a request by a manager to push a hosts or domain table
1239: # to us. We pick apart the command and pass it on to the subs
1240: # that already exist to do this.
1241: #
1242: # Parameters:
1243: # $cmd - the actual keyword that invoked us.
1244: # $tail - the tail of the request that invoked us.
1245: # $client - File descriptor connected to the client
1246: # Returns:
1247: # 1 - Ok to continue processing.
1248: # 0 - Program should exit
1249: # Implicit Output:
1250: # a reply is written to the client.
1251: sub push_file_handler {
1252: my ($cmd, $tail, $client) = @_;
1.412 foxr 1253: &Debug("In push file handler");
1.218 foxr 1254: my $userinput = "$cmd:$tail";
1255:
1256: # At this time we only know that the IP of our partner is a valid manager
1257: # the code below is a hook to do further authentication (e.g. to resolve
1258: # spoofing).
1259:
1260: my $cert = &GetCertificate($userinput);
1.412 foxr 1261: if(&ValidManager($cert)) {
1262: &Debug("Valid manager: $client");
1.218 foxr 1263:
1264: # Now presumably we have the bona fides of both the peer host and the
1265: # process making the request.
1266:
1267: my $reply = &PushFile($userinput);
1.387 albertel 1268: &Reply($client, \$reply, $userinput);
1.218 foxr 1269:
1270: } else {
1.412 foxr 1271: &logthis("push_file_handler $client is not valid");
1.218 foxr 1272: &Failure( $client, "refused\n", $userinput);
1273: }
1.219 foxr 1274: return 1;
1.218 foxr 1275: }
1276: ®ister_handler("pushfile", \&push_file_handler, 1, 0, 1);
1277:
1.399 raeburn 1278: # The du_handler routine should be considered obsolete and is retained
1279: # for communication with legacy servers. Please see the du2_handler.
1.243 banghart 1280: #
1.399 raeburn 1281: # du - list the disk usage of a directory recursively.
1.243 banghart 1282: #
1283: # note: stolen code from the ls file handler
1284: # under construction by Rick Banghart
1285: # .
1286: # Parameters:
1287: # $cmd - The command that dispatched us (du).
1288: # $ududir - The directory path to list... I'm not sure what this
1289: # is relative as things like ls:. return e.g.
1290: # no_such_dir.
1291: # $client - Socket open on the client.
1292: # Returns:
1293: # 1 - indicating that the daemon should not disconnect.
1294: # Side Effects:
1295: # The reply is written to $client.
1296: #
1297: sub du_handler {
1298: my ($cmd, $ududir, $client) = @_;
1.339 albertel 1299: ($ududir) = split(/:/,$ududir); # Make 'telnet' testing easier.
1.251 foxr 1300: my $userinput = "$cmd:$ududir";
1301:
1.245 albertel 1302: if ($ududir=~/\.\./ || $ududir!~m|^/home/httpd/|) {
1303: &Failure($client,"refused\n","$cmd:$ududir");
1304: return 1;
1305: }
1.249 foxr 1306: # Since $ududir could have some nasties in it,
1307: # we will require that ududir is a valid
1308: # directory. Just in case someone tries to
1309: # slip us a line like .;(cd /home/httpd rm -rf*)
1310: # etc.
1311: #
1312: if (-d $ududir) {
1.292 albertel 1313: my $total_size=0;
1314: my $code=sub {
1315: if ($_=~/\.\d+\./) { return;}
1316: if ($_=~/\.meta$/) { return;}
1.362 albertel 1317: if (-d $_) { return;}
1.292 albertel 1318: $total_size+=(stat($_))[7];
1319: };
1.295 raeburn 1320: chdir($ududir);
1.292 albertel 1321: find($code,$ududir);
1322: $total_size=int($total_size/1024);
1.387 albertel 1323: &Reply($client,\$total_size,"$cmd:$ududir");
1.249 foxr 1324: } else {
1.251 foxr 1325: &Failure($client, "bad_directory:$ududir\n","$cmd:$ududir");
1.249 foxr 1326: }
1.243 banghart 1327: return 1;
1328: }
1329: ®ister_handler("du", \&du_handler, 0, 1, 0);
1.218 foxr 1330:
1.399 raeburn 1331: # Please also see the du_handler, which is obsoleted by du2.
1332: # du2_handler differs from du_handler in that required path to directory
1333: # provided by &propath() is prepended in the handler instead of on the
1334: # client side.
1.239 foxr 1335: #
1.399 raeburn 1336: # du2 - list the disk usage of a directory recursively.
1337: #
1338: # Parameters:
1339: # $cmd - The command that dispatched us (du).
1340: # $tail - The tail of the request that invoked us.
1341: # $tail is a : separated list of the following:
1342: # - $ududir - directory path to list (before prepending)
1343: # - $getpropath = 1 if &propath() should prepend
1344: # - $uname - username to use for &propath or user dir
1345: # - $udom - domain to use for &propath or user dir
1346: # All are escaped.
1347: # $client - Socket open on the client.
1348: # Returns:
1349: # 1 - indicating that the daemon should not disconnect.
1350: # Side Effects:
1351: # The reply is written to $client.
1352: #
1353:
1354: sub du2_handler {
1355: my ($cmd, $tail, $client) = @_;
1356: my ($ududir,$getpropath,$uname,$udom) = map { &unescape($_) } (split(/:/, $tail));
1357: my $userinput = "$cmd:$tail";
1358: if (($ududir=~/\.\./) || (($ududir!~m|^/home/httpd/|) && (!$getpropath))) {
1359: &Failure($client,"refused\n","$cmd:$tail");
1360: return 1;
1361: }
1362: if ($getpropath) {
1363: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1364: $ududir = &propath($udom,$uname).'/'.$ududir;
1365: } else {
1366: &Failure($client,"refused\n","$cmd:$tail");
1367: return 1;
1368: }
1369: }
1370: # Since $ududir could have some nasties in it,
1371: # we will require that ududir is a valid
1372: # directory. Just in case someone tries to
1373: # slip us a line like .;(cd /home/httpd rm -rf*)
1374: # etc.
1375: #
1376: if (-d $ududir) {
1377: my $total_size=0;
1378: my $code=sub {
1379: if ($_=~/\.\d+\./) { return;}
1380: if ($_=~/\.meta$/) { return;}
1381: if (-d $_) { return;}
1382: $total_size+=(stat($_))[7];
1383: };
1384: chdir($ududir);
1385: find($code,$ududir);
1386: $total_size=int($total_size/1024);
1387: &Reply($client,\$total_size,"$cmd:$ududir");
1388: } else {
1389: &Failure($client, "bad_directory:$ududir\n","$cmd:$tail");
1390: }
1391: return 1;
1392: }
1393: ®ister_handler("du2", \&du2_handler, 0, 1, 0);
1394:
1395: #
1396: # The ls_handler routine should be considered obsolete and is retained
1397: # for communication with legacy servers. Please see the ls3_handler.
1.280 matthew 1398: #
1.239 foxr 1399: # ls - list the contents of a directory. For each file in the
1400: # selected directory the filename followed by the full output of
1401: # the stat function is returned. The returned info for each
1402: # file are separated by ':'. The stat fields are separated by &'s.
1403: # Parameters:
1404: # $cmd - The command that dispatched us (ls).
1405: # $ulsdir - The directory path to list... I'm not sure what this
1406: # is relative as things like ls:. return e.g.
1407: # no_such_dir.
1408: # $client - Socket open on the client.
1409: # Returns:
1410: # 1 - indicating that the daemon should not disconnect.
1411: # Side Effects:
1412: # The reply is written to $client.
1413: #
1414: sub ls_handler {
1.280 matthew 1415: # obsoleted by ls2_handler
1.239 foxr 1416: my ($cmd, $ulsdir, $client) = @_;
1417:
1418: my $userinput = "$cmd:$ulsdir";
1419:
1420: my $obs;
1421: my $rights;
1422: my $ulsout='';
1423: my $ulsfn;
1424: if (-e $ulsdir) {
1425: if(-d $ulsdir) {
1426: if (opendir(LSDIR,$ulsdir)) {
1427: while ($ulsfn=readdir(LSDIR)) {
1.291 albertel 1428: undef($obs);
1429: undef($rights);
1.239 foxr 1430: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1431: #We do some obsolete checking here
1432: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1433: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1434: my @obsolete=<FILE>;
1435: foreach my $obsolete (@obsolete) {
1.301 www 1436: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1.239 foxr 1437: if($obsolete =~ m|(<copyright>)(default)|) { $rights = 1; }
1438: }
1439: }
1440: $ulsout.=$ulsfn.'&'.join('&',@ulsstats);
1441: if($obs eq '1') { $ulsout.="&1"; }
1442: else { $ulsout.="&0"; }
1443: if($rights eq '1') { $ulsout.="&1:"; }
1444: else { $ulsout.="&0:"; }
1445: }
1446: closedir(LSDIR);
1447: }
1448: } else {
1449: my @ulsstats=stat($ulsdir);
1450: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1451: }
1452: } else {
1453: $ulsout='no_such_dir';
1454: }
1455: if ($ulsout eq '') { $ulsout='empty'; }
1.387 albertel 1456: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1.239 foxr 1457:
1458: return 1;
1459:
1460: }
1461: ®ister_handler("ls", \&ls_handler, 0, 1, 0);
1462:
1.399 raeburn 1463: # The ls2_handler routine should be considered obsolete and is retained
1464: # for communication with legacy servers. Please see the ls3_handler.
1465: # Please also see the ls_handler, which was itself obsoleted by ls2.
1.280 matthew 1466: # ls2_handler differs from ls_handler in that it escapes its return
1467: # values before concatenating them together with ':'s.
1468: #
1469: # ls2 - list the contents of a directory. For each file in the
1470: # selected directory the filename followed by the full output of
1471: # the stat function is returned. The returned info for each
1472: # file are separated by ':'. The stat fields are separated by &'s.
1473: # Parameters:
1474: # $cmd - The command that dispatched us (ls).
1475: # $ulsdir - The directory path to list... I'm not sure what this
1476: # is relative as things like ls:. return e.g.
1477: # no_such_dir.
1478: # $client - Socket open on the client.
1479: # Returns:
1480: # 1 - indicating that the daemon should not disconnect.
1481: # Side Effects:
1482: # The reply is written to $client.
1483: #
1484: sub ls2_handler {
1485: my ($cmd, $ulsdir, $client) = @_;
1486:
1487: my $userinput = "$cmd:$ulsdir";
1488:
1489: my $obs;
1490: my $rights;
1491: my $ulsout='';
1492: my $ulsfn;
1493: if (-e $ulsdir) {
1494: if(-d $ulsdir) {
1495: if (opendir(LSDIR,$ulsdir)) {
1496: while ($ulsfn=readdir(LSDIR)) {
1.291 albertel 1497: undef($obs);
1498: undef($rights);
1.280 matthew 1499: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1500: #We do some obsolete checking here
1501: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1502: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1503: my @obsolete=<FILE>;
1504: foreach my $obsolete (@obsolete) {
1.301 www 1505: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1.280 matthew 1506: if($obsolete =~ m|(<copyright>)(default)|) {
1507: $rights = 1;
1508: }
1509: }
1510: }
1511: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1512: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1513: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1514: $ulsout.= &escape($tmp).':';
1515: }
1516: closedir(LSDIR);
1517: }
1518: } else {
1519: my @ulsstats=stat($ulsdir);
1520: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1521: }
1522: } else {
1523: $ulsout='no_such_dir';
1524: }
1525: if ($ulsout eq '') { $ulsout='empty'; }
1.387 albertel 1526: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1.280 matthew 1527: return 1;
1528: }
1529: ®ister_handler("ls2", \&ls2_handler, 0, 1, 0);
1.399 raeburn 1530: #
1531: # ls3 - list the contents of a directory. For each file in the
1532: # selected directory the filename followed by the full output of
1533: # the stat function is returned. The returned info for each
1534: # file are separated by ':'. The stat fields are separated by &'s.
1535: # Parameters:
1536: # $cmd - The command that dispatched us (ls).
1537: # $tail - The tail of the request that invoked us.
1538: # $tail is a : separated list of the following:
1539: # - $ulsdir - directory path to list (before prepending)
1540: # - $getpropath = 1 if &propath() should prepend
1541: # - $getuserdir = 1 if path to user dir in lonUsers should
1542: # prepend
1543: # - $alternate_root - path to prepend
1544: # - $uname - username to use for &propath or user dir
1545: # - $udom - domain to use for &propath or user dir
1546: # All of these except $getpropath and &getuserdir are escaped.
1547: # no_such_dir.
1548: # $client - Socket open on the client.
1549: # Returns:
1550: # 1 - indicating that the daemon should not disconnect.
1551: # Side Effects:
1552: # The reply is written to $client.
1553: #
1554:
1555: sub ls3_handler {
1556: my ($cmd, $tail, $client) = @_;
1557: my $userinput = "$cmd:$tail";
1558: my ($ulsdir,$getpropath,$getuserdir,$alternate_root,$uname,$udom) =
1559: split(/:/,$tail);
1560: if (defined($ulsdir)) {
1561: $ulsdir = &unescape($ulsdir);
1562: }
1563: if (defined($alternate_root)) {
1564: $alternate_root = &unescape($alternate_root);
1565: }
1566: if (defined($uname)) {
1567: $uname = &unescape($uname);
1568: }
1569: if (defined($udom)) {
1570: $udom = &unescape($udom);
1571: }
1572:
1573: my $dir_root = $perlvar{'lonDocRoot'};
1574: if ($getpropath) {
1575: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1576: $dir_root = &propath($udom,$uname);
1577: $dir_root =~ s/\/$//;
1578: } else {
1579: &Failure($client,"refused\n","$cmd:$tail");
1580: return 1;
1581: }
1582: } elsif ($getuserdir) {
1583: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1584: my $subdir=$uname.'__';
1585: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
1586: $dir_root = $Apache::lonnet::perlvar{'lonUsersDir'}
1587: ."/$udom/$subdir/$uname";
1588: } else {
1589: &Failure($client,"refused\n","$cmd:$tail");
1590: return 1;
1591: }
1.400 raeburn 1592: } elsif ($alternate_root ne '') {
1.399 raeburn 1593: $dir_root = $alternate_root;
1594: }
1.408 raeburn 1595: if (($dir_root ne '') && ($dir_root ne '/')) {
1.400 raeburn 1596: if ($ulsdir =~ /^\//) {
1597: $ulsdir = $dir_root.$ulsdir;
1598: } else {
1599: $ulsdir = $dir_root.'/'.$ulsdir;
1600: }
1.399 raeburn 1601: }
1602: my $obs;
1603: my $rights;
1604: my $ulsout='';
1605: my $ulsfn;
1606: if (-e $ulsdir) {
1607: if(-d $ulsdir) {
1608: if (opendir(LSDIR,$ulsdir)) {
1609: while ($ulsfn=readdir(LSDIR)) {
1610: undef($obs);
1611: undef($rights);
1612: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1613: #We do some obsolete checking here
1614: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1615: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1616: my @obsolete=<FILE>;
1617: foreach my $obsolete (@obsolete) {
1618: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1619: if($obsolete =~ m|(<copyright>)(default)|) {
1620: $rights = 1;
1621: }
1622: }
1623: }
1624: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1625: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1626: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1627: $ulsout.= &escape($tmp).':';
1628: }
1629: closedir(LSDIR);
1630: }
1631: } else {
1632: my @ulsstats=stat($ulsdir);
1633: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1634: }
1635: } else {
1636: $ulsout='no_such_dir';
1.400 raeburn 1637: }
1638: if ($ulsout eq '') { $ulsout='empty'; }
1639: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1640: return 1;
1.399 raeburn 1641: }
1642: ®ister_handler("ls3", \&ls3_handler, 0, 1, 0);
1.280 matthew 1643:
1.410 raeburn 1644: sub server_timezone_handler {
1645: my ($cmd,$tail,$client) = @_;
1646: my $userinput = "$cmd:$tail";
1647: my $timezone;
1648: my $clockfile = '/etc/sysconfig/clock'; # Fedora/CentOS/SuSE
1649: my $tzfile = '/etc/timezone'; # Debian/Ubuntu
1650: if (-e $clockfile) {
1651: if (open(my $fh,"<$clockfile")) {
1652: while (<$fh>) {
1653: next if (/^[\#\s]/);
1654: if (/^(?:TIME)?ZONE\s*=\s*['"]?\s*([\w\/]+)/) {
1655: $timezone = $1;
1656: last;
1657: }
1658: }
1659: close($fh);
1660: }
1661: } elsif (-e $tzfile) {
1662: if (open(my $fh,"<$tzfile")) {
1663: $timezone = <$fh>;
1664: close($fh);
1665: chomp($timezone);
1666: if ($timezone =~ m{^Etc/(\w+)$}) {
1667: $timezone = $1;
1668: }
1669: }
1670: }
1671: &Reply($client,\$timezone,$userinput); # This supports debug logging.
1672: return 1;
1673: }
1674: ®ister_handler("servertimezone", \&server_timezone_handler, 0, 1, 0);
1675:
1.413 raeburn 1676: sub server_loncaparev_handler {
1677: my ($cmd,$tail,$client) = @_;
1678: my $userinput = "$cmd:$tail";
1679: &Reply($client,\$perlvar{'lonVersion'},$userinput);
1680: return 1;
1681: }
1682: ®ister_handler("serverloncaparev", \&server_loncaparev_handler, 0, 1, 0);
1683:
1.448 raeburn 1684: sub server_homeID_handler {
1685: my ($cmd,$tail,$client) = @_;
1686: my $userinput = "$cmd:$tail";
1687: &Reply($client,\$perlvar{'lonHostID'},$userinput);
1688: return 1;
1689: }
1690: ®ister_handler("serverhomeID", \&server_homeID_handler, 0, 1, 0);
1691:
1.467.2.3 raeburn 1692: sub server_distarch_handler {
1693: my ($cmd,$tail,$client) = @_;
1694: my $userinput = "$cmd:$tail";
1695: my $reply = &distro_and_arch();
1696: &Reply($client,\$reply,$userinput);
1697: return 1;
1698: }
1699: ®ister_handler("serverdistarch", \&server_distarch_handler, 0, 1, 0);
1700:
1.218 foxr 1701: # Process a reinit request. Reinit requests that either
1702: # lonc or lond be reinitialized so that an updated
1703: # host.tab or domain.tab can be processed.
1704: #
1705: # Parameters:
1706: # $cmd - the actual keyword that invoked us.
1707: # $tail - the tail of the request that invoked us.
1708: # $client - File descriptor connected to the client
1709: # Returns:
1710: # 1 - Ok to continue processing.
1711: # 0 - Program should exit
1712: # Implicit output:
1713: # a reply is sent to the client.
1714: #
1715: sub reinit_process_handler {
1716: my ($cmd, $tail, $client) = @_;
1717:
1718: my $userinput = "$cmd:$tail";
1719:
1720: my $cert = &GetCertificate($userinput);
1721: if(&ValidManager($cert)) {
1722: chomp($userinput);
1723: my $reply = &ReinitProcess($userinput);
1.387 albertel 1724: &Reply( $client, \$reply, $userinput);
1.218 foxr 1725: } else {
1726: &Failure( $client, "refused\n", $userinput);
1727: }
1728: return 1;
1729: }
1730: ®ister_handler("reinit", \&reinit_process_handler, 1, 0, 1);
1731:
1732: # Process the editing script for a table edit operation.
1733: # the editing operation must be encrypted and requested by
1734: # a manager host.
1735: #
1736: # Parameters:
1737: # $cmd - the actual keyword that invoked us.
1738: # $tail - the tail of the request that invoked us.
1739: # $client - File descriptor connected to the client
1740: # Returns:
1741: # 1 - Ok to continue processing.
1742: # 0 - Program should exit
1743: # Implicit output:
1744: # a reply is sent to the client.
1745: #
1746: sub edit_table_handler {
1747: my ($command, $tail, $client) = @_;
1748:
1749: my $userinput = "$command:$tail";
1750:
1751: my $cert = &GetCertificate($userinput);
1752: if(&ValidManager($cert)) {
1753: my($filetype, $script) = split(/:/, $tail);
1754: if (($filetype eq "hosts") ||
1755: ($filetype eq "domain")) {
1756: if($script ne "") {
1757: &Reply($client, # BUGBUG - EditFile
1758: &EditFile($userinput), # could fail.
1759: $userinput);
1760: } else {
1761: &Failure($client,"refused\n",$userinput);
1762: }
1763: } else {
1764: &Failure($client,"refused\n",$userinput);
1765: }
1766: } else {
1767: &Failure($client,"refused\n",$userinput);
1768: }
1769: return 1;
1770: }
1.263 albertel 1771: ®ister_handler("edit", \&edit_table_handler, 1, 0, 1);
1.218 foxr 1772:
1.220 foxr 1773: #
1774: # Authenticate a user against the LonCAPA authentication
1775: # database. Note that there are several authentication
1776: # possibilities:
1777: # - unix - The user can be authenticated against the unix
1778: # password file.
1779: # - internal - The user can be authenticated against a purely
1780: # internal per user password file.
1781: # - kerberos - The user can be authenticated against either a kerb4 or kerb5
1782: # ticket granting authority.
1783: # - user - The person tailoring LonCAPA can supply a user authentication
1784: # mechanism that is per system.
1785: #
1786: # Parameters:
1787: # $cmd - The command that got us here.
1788: # $tail - Tail of the command (remaining parameters).
1789: # $client - File descriptor connected to client.
1790: # Returns
1791: # 0 - Requested to exit, caller should shut down.
1792: # 1 - Continue processing.
1793: # Implicit inputs:
1794: # The authentication systems describe above have their own forms of implicit
1795: # input into the authentication process that are described above.
1796: #
1797: sub authenticate_handler {
1798: my ($cmd, $tail, $client) = @_;
1799:
1800:
1801: # Regenerate the full input line
1802:
1803: my $userinput = $cmd.":".$tail;
1804:
1805: # udom - User's domain.
1806: # uname - Username.
1807: # upass - User's password.
1.396 raeburn 1808: # checkdefauth - Pass to validate_user() to try authentication
1809: # with default auth type(s) if no user account.
1.447 raeburn 1810: # clientcancheckhost - Passed by clients with functionality in lonauth.pm
1811: # to check if session can be hosted.
1.220 foxr 1812:
1.447 raeburn 1813: my ($udom, $uname, $upass, $checkdefauth, $clientcancheckhost)=split(/:/,$tail);
1.399 raeburn 1814: &Debug(" Authenticate domain = $udom, user = $uname, password = $upass, checkdefauth = $checkdefauth");
1.220 foxr 1815: chomp($upass);
1816: $upass=&unescape($upass);
1817:
1.396 raeburn 1818: my $pwdcorrect = &validate_user($udom,$uname,$upass,$checkdefauth);
1.220 foxr 1819: if($pwdcorrect) {
1.447 raeburn 1820: my $canhost = 1;
1821: unless ($clientcancheckhost) {
1.448 raeburn 1822: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1823: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1.452 raeburn 1824: my @intdoms;
1825: my $internet_names = &Apache::lonnet::get_internet_names($clientname);
1826: if (ref($internet_names) eq 'ARRAY') {
1827: @intdoms = @{$internet_names};
1828: }
1.448 raeburn 1829: unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
1.447 raeburn 1830: my ($remote,$hosted);
1831: my $remotesession = &get_usersession_config($udom,'remotesession');
1832: if (ref($remotesession) eq 'HASH') {
1833: $remote = $remotesession->{'remote'}
1834: }
1.448 raeburn 1835: my $hostedsession = &get_usersession_config($clienthomedom,'hostedsession');
1.447 raeburn 1836: if (ref($hostedsession) eq 'HASH') {
1837: $hosted = $hostedsession->{'hosted'};
1838: }
1.449 raeburn 1839: my $loncaparev = $clientversion;
1840: if ($loncaparev eq '') {
1841: $loncaparev = $Apache::lonnet::loncaparevs{$clientname};
1842: }
1.448 raeburn 1843: $canhost = &Apache::lonnet::can_host_session($udom,$clientname,
1.449 raeburn 1844: $loncaparev,
1.447 raeburn 1845: $remote,$hosted);
1846: }
1847: }
1848: if ($canhost) {
1849: &Reply( $client, "authorized\n", $userinput);
1850: } else {
1851: &Reply( $client, "not_allowed_to_host\n", $userinput);
1852: }
1.220 foxr 1853: #
1854: # Bad credentials: Failed to authorize
1855: #
1856: } else {
1857: &Failure( $client, "non_authorized\n", $userinput);
1858: }
1859:
1860: return 1;
1861: }
1.263 albertel 1862: ®ister_handler("auth", \&authenticate_handler, 1, 1, 0);
1.214 foxr 1863:
1.222 foxr 1864: #
1865: # Change a user's password. Note that this function is complicated by
1866: # the fact that a user may be authenticated in more than one way:
1867: # At present, we are not able to change the password for all types of
1868: # authentication methods. Only for:
1869: # unix - unix password or shadow passoword style authentication.
1870: # local - Locally written authentication mechanism.
1871: # For now, kerb4 and kerb5 password changes are not supported and result
1872: # in an error.
1873: # FUTURE WORK:
1874: # Support kerberos passwd changes?
1875: # Parameters:
1876: # $cmd - The command that got us here.
1877: # $tail - Tail of the command (remaining parameters).
1878: # $client - File descriptor connected to client.
1879: # Returns
1880: # 0 - Requested to exit, caller should shut down.
1881: # 1 - Continue processing.
1882: # Implicit inputs:
1883: # The authentication systems describe above have their own forms of implicit
1884: # input into the authentication process that are described above.
1885: sub change_password_handler {
1886: my ($cmd, $tail, $client) = @_;
1887:
1888: my $userinput = $cmd.":".$tail; # Reconstruct client's string.
1889:
1890: #
1891: # udom - user's domain.
1892: # uname - Username.
1893: # upass - Current password.
1894: # npass - New password.
1.346 raeburn 1895: # context - Context in which this was called
1896: # (preferences or reset_by_email).
1.428 raeburn 1897: # lonhost - HostID of server where request originated
1.222 foxr 1898:
1.428 raeburn 1899: my ($udom,$uname,$upass,$npass,$context,$lonhost)=split(/:/,$tail);
1.222 foxr 1900:
1901: $upass=&unescape($upass);
1902: $npass=&unescape($npass);
1903: &Debug("Trying to change password for $uname");
1904:
1905: # First require that the user can be authenticated with their
1.346 raeburn 1906: # old password unless context was 'reset_by_email':
1907:
1.428 raeburn 1908: my ($validated,$failure);
1.346 raeburn 1909: if ($context eq 'reset_by_email') {
1.428 raeburn 1910: if ($lonhost eq '') {
1911: $failure = 'invalid_client';
1912: } else {
1913: $validated = 1;
1914: }
1.346 raeburn 1915: } else {
1916: $validated = &validate_user($udom, $uname, $upass);
1917: }
1.222 foxr 1918: if($validated) {
1919: my $realpasswd = &get_auth_type($udom, $uname); # Defined since authd.
1920:
1921: my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
1922: if ($howpwd eq 'internal') {
1923: &Debug("internal auth");
1924: my $salt=time;
1925: $salt=substr($salt,6,2);
1926: my $ncpass=crypt($npass,$salt);
1927: if(&rewrite_password_file($udom, $uname, "internal:$ncpass")) {
1.428 raeburn 1928: my $msg="Result of password change for $uname: pwchange_success";
1929: if ($lonhost) {
1930: $msg .= " - request originated from: $lonhost";
1931: }
1932: &logthis($msg);
1.222 foxr 1933: &Reply($client, "ok\n", $userinput);
1934: } else {
1935: &logthis("Unable to open $uname passwd "
1936: ."to change password");
1937: &Failure( $client, "non_authorized\n",$userinput);
1938: }
1.346 raeburn 1939: } elsif ($howpwd eq 'unix' && $context ne 'reset_by_email') {
1.287 foxr 1940: my $result = &change_unix_password($uname, $npass);
1.222 foxr 1941: &logthis("Result of password change for $uname: ".
1.287 foxr 1942: $result);
1.387 albertel 1943: &Reply($client, \$result, $userinput);
1.222 foxr 1944: } else {
1945: # this just means that the current password mode is not
1946: # one we know how to change (e.g the kerberos auth modes or
1947: # locally written auth handler).
1948: #
1949: &Failure( $client, "auth_mode_error\n", $userinput);
1950: }
1951:
1.224 foxr 1952: } else {
1.428 raeburn 1953: if ($failure eq '') {
1954: $failure = 'non_authorized';
1955: }
1956: &Failure( $client, "$failure\n", $userinput);
1.222 foxr 1957: }
1958:
1959: return 1;
1960: }
1.263 albertel 1961: ®ister_handler("passwd", \&change_password_handler, 1, 1, 0);
1.222 foxr 1962:
1.225 foxr 1963: #
1964: # Create a new user. User in this case means a lon-capa user.
1965: # The user must either already exist in some authentication realm
1966: # like kerberos or the /etc/passwd. If not, a user completely local to
1967: # this loncapa system is created.
1968: #
1969: # Parameters:
1970: # $cmd - The command that got us here.
1971: # $tail - Tail of the command (remaining parameters).
1972: # $client - File descriptor connected to client.
1973: # Returns
1974: # 0 - Requested to exit, caller should shut down.
1975: # 1 - Continue processing.
1976: # Implicit inputs:
1977: # The authentication systems describe above have their own forms of implicit
1978: # input into the authentication process that are described above.
1979: sub add_user_handler {
1980:
1981: my ($cmd, $tail, $client) = @_;
1982:
1983:
1984: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
1985: my $userinput = $cmd.":".$tail; # Reconstruct the full request line.
1986:
1987: &Debug("cmd =".$cmd." $udom =".$udom." uname=".$uname);
1988:
1989:
1990: if($udom eq $currentdomainid) { # Reject new users for other domains...
1991:
1992: my $oldumask=umask(0077);
1993: chomp($npass);
1994: $npass=&unescape($npass);
1995: my $passfilename = &password_path($udom, $uname);
1996: &Debug("Password file created will be:".$passfilename);
1997: if (-e $passfilename) {
1998: &Failure( $client, "already_exists\n", $userinput);
1999: } else {
2000: my $fperror='';
1.264 albertel 2001: if (!&mkpath($passfilename)) {
2002: $fperror="error: ".($!+0)." mkdir failed while attempting "
2003: ."makeuser";
1.225 foxr 2004: }
2005: unless ($fperror) {
2006: my $result=&make_passwd_file($uname, $umode,$npass, $passfilename);
1.390 raeburn 2007: &Reply($client,\$result, $userinput); #BUGBUG - could be fail
1.225 foxr 2008: } else {
1.387 albertel 2009: &Failure($client, \$fperror, $userinput);
1.225 foxr 2010: }
2011: }
2012: umask($oldumask);
2013: } else {
2014: &Failure($client, "not_right_domain\n",
2015: $userinput); # Even if we are multihomed.
2016:
2017: }
2018: return 1;
2019:
2020: }
2021: ®ister_handler("makeuser", \&add_user_handler, 1, 1, 0);
2022:
2023: #
2024: # Change the authentication method of a user. Note that this may
2025: # also implicitly change the user's password if, for example, the user is
2026: # joining an existing authentication realm. Known authentication realms at
2027: # this time are:
2028: # internal - Purely internal password file (only loncapa knows this user)
2029: # local - Institutionally written authentication module.
2030: # unix - Unix user (/etc/passwd with or without /etc/shadow).
2031: # kerb4 - kerberos version 4
2032: # kerb5 - kerberos version 5
2033: #
2034: # Parameters:
2035: # $cmd - The command that got us here.
2036: # $tail - Tail of the command (remaining parameters).
2037: # $client - File descriptor connected to client.
2038: # Returns
2039: # 0 - Requested to exit, caller should shut down.
2040: # 1 - Continue processing.
2041: # Implicit inputs:
2042: # The authentication systems describe above have their own forms of implicit
2043: # input into the authentication process that are described above.
1.287 foxr 2044: # NOTE:
2045: # This is also used to change the authentication credential values (e.g. passwd).
2046: #
1.225 foxr 2047: #
2048: sub change_authentication_handler {
2049:
2050: my ($cmd, $tail, $client) = @_;
2051:
2052: my $userinput = "$cmd:$tail"; # Reconstruct user input.
2053:
2054: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2055: &Debug("cmd = ".$cmd." domain= ".$udom."uname =".$uname." umode= ".$umode);
2056: if ($udom ne $currentdomainid) {
2057: &Failure( $client, "not_right_domain\n", $client);
2058: } else {
2059:
2060: chomp($npass);
2061:
2062: $npass=&unescape($npass);
1.261 foxr 2063: my $oldauth = &get_auth_type($udom, $uname); # Get old auth info.
1.225 foxr 2064: my $passfilename = &password_path($udom, $uname);
2065: if ($passfilename) { # Not allowed to create a new user!!
1.287 foxr 2066: # If just changing the unix passwd. need to arrange to run
2067: # passwd since otherwise make_passwd_file will run
2068: # lcuseradd which fails if an account already exists
2069: # (to prevent an unscrupulous LONCAPA admin from stealing
2070: # an existing account by overwriting it as a LonCAPA account).
2071:
2072: if(($oldauth =~/^unix/) && ($umode eq "unix")) {
2073: my $result = &change_unix_password($uname, $npass);
2074: &logthis("Result of password change for $uname: ".$result);
2075: if ($result eq "ok") {
1.390 raeburn 2076: &Reply($client, \$result);
1.288 albertel 2077: } else {
1.387 albertel 2078: &Failure($client, \$result);
1.287 foxr 2079: }
1.288 albertel 2080: } else {
1.287 foxr 2081: my $result=&make_passwd_file($uname, $umode,$npass,$passfilename);
2082: #
2083: # If the current auth mode is internal, and the old auth mode was
2084: # unix, or krb*, and the user is an author for this domain,
2085: # re-run manage_permissions for that role in order to be able
2086: # to take ownership of the construction space back to www:www
2087: #
2088:
2089:
2090: if( (($oldauth =~ /^unix/) && ($umode eq "internal")) ||
2091: (($oldauth =~ /^internal/) && ($umode eq "unix")) ) {
2092: if(&is_author($udom, $uname)) {
2093: &Debug(" Need to manage author permissions...");
2094: &manage_permissions("/$udom/_au", $udom, $uname, "$umode:");
2095: }
1.261 foxr 2096: }
1.387 albertel 2097: &Reply($client, \$result, $userinput);
1.261 foxr 2098: }
2099:
2100:
1.225 foxr 2101: } else {
1.251 foxr 2102: &Failure($client, "non_authorized\n", $userinput); # Fail the user now.
1.225 foxr 2103: }
2104: }
2105: return 1;
2106: }
2107: ®ister_handler("changeuserauth", \&change_authentication_handler, 1,1, 0);
2108:
2109: #
2110: # Determines if this is the home server for a user. The home server
2111: # for a user will have his/her lon-capa passwd file. Therefore all we need
2112: # to do is determine if this file exists.
2113: #
2114: # Parameters:
2115: # $cmd - The command that got us here.
2116: # $tail - Tail of the command (remaining parameters).
2117: # $client - File descriptor connected to client.
2118: # Returns
2119: # 0 - Requested to exit, caller should shut down.
2120: # 1 - Continue processing.
2121: # Implicit inputs:
2122: # The authentication systems describe above have their own forms of implicit
2123: # input into the authentication process that are described above.
2124: #
2125: sub is_home_handler {
2126: my ($cmd, $tail, $client) = @_;
2127:
2128: my $userinput = "$cmd:$tail";
2129:
2130: my ($udom,$uname)=split(/:/,$tail);
2131: chomp($uname);
2132: my $passfile = &password_filename($udom, $uname);
2133: if($passfile) {
2134: &Reply( $client, "found\n", $userinput);
2135: } else {
2136: &Failure($client, "not_found\n", $userinput);
2137: }
2138: return 1;
2139: }
2140: ®ister_handler("home", \&is_home_handler, 0,1,0);
2141:
2142: #
1.434 www 2143: # Process an update request for a resource.
2144: # A resource has been modified that we hold a subscription to.
1.225 foxr 2145: # If the resource is not local, then we must update, or at least invalidate our
2146: # cached copy of the resource.
2147: # Parameters:
2148: # $cmd - The command that got us here.
2149: # $tail - Tail of the command (remaining parameters).
2150: # $client - File descriptor connected to client.
2151: # Returns
2152: # 0 - Requested to exit, caller should shut down.
2153: # 1 - Continue processing.
2154: # Implicit inputs:
2155: # The authentication systems describe above have their own forms of implicit
2156: # input into the authentication process that are described above.
2157: #
2158: sub update_resource_handler {
2159:
2160: my ($cmd, $tail, $client) = @_;
2161:
2162: my $userinput = "$cmd:$tail";
2163:
2164: my $fname= $tail; # This allows interactive testing
2165:
2166:
2167: my $ownership=ishome($fname);
2168: if ($ownership eq 'not_owner') {
2169: if (-e $fname) {
1.434 www 2170: # Delete preview file, if exists
2171: unlink("$fname.tmp");
2172: # Get usage stats
1.225 foxr 2173: my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
2174: $atime,$mtime,$ctime,$blksize,$blocks)=stat($fname);
2175: my $now=time;
2176: my $since=$now-$atime;
1.434 www 2177: # If the file has not been used within lonExpire seconds,
2178: # unsubscribe from it and delete local copy
1.225 foxr 2179: if ($since>$perlvar{'lonExpire'}) {
1.365 albertel 2180: my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
1.308 albertel 2181: &devalidate_meta_cache($fname);
1.225 foxr 2182: unlink("$fname");
1.334 albertel 2183: unlink("$fname.meta");
1.225 foxr 2184: } else {
1.434 www 2185: # Yes, this is in active use. Get a fresh copy. Since it might be in
2186: # very active use and huge (like a movie), copy it to "in.transfer" filename first.
1.225 foxr 2187: my $transname="$fname.in.transfer";
1.365 albertel 2188: my $remoteurl=&Apache::lonnet::reply("sub:$fname","$clientname");
1.225 foxr 2189: my $response;
1.455 www 2190: # FIXME: cannot replicate files that take more than two minutes to transfer?
2191: # alarm(120);
2192: # FIXME: this should use the LWP mechanism, not internal alarms.
2193: alarm(1200);
1.225 foxr 2194: {
2195: my $ua=new LWP::UserAgent;
2196: my $request=new HTTP::Request('GET',"$remoteurl");
2197: $response=$ua->request($request,$transname);
2198: }
2199: alarm(0);
2200: if ($response->is_error()) {
1.455 www 2201: # FIXME: we should probably clean up here instead of just whine
1.225 foxr 2202: unlink($transname);
2203: my $message=$response->status_line;
2204: &logthis("LWP GET: $message for $fname ($remoteurl)");
2205: } else {
2206: if ($remoteurl!~/\.meta$/) {
1.455 www 2207: # FIXME: isn't there an internal LWP mechanism for this?
1.225 foxr 2208: alarm(120);
2209: {
2210: my $ua=new LWP::UserAgent;
2211: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2212: my $mresponse=$ua->request($mrequest,$fname.'.meta');
2213: if ($mresponse->is_error()) {
2214: unlink($fname.'.meta');
2215: }
2216: }
2217: alarm(0);
2218: }
1.434 www 2219: # we successfully transfered, copy file over to real name
1.225 foxr 2220: rename($transname,$fname);
1.308 albertel 2221: &devalidate_meta_cache($fname);
1.225 foxr 2222: }
2223: }
2224: &Reply( $client, "ok\n", $userinput);
2225: } else {
2226: &Failure($client, "not_found\n", $userinput);
2227: }
2228: } else {
2229: &Failure($client, "rejected\n", $userinput);
2230: }
2231: return 1;
2232: }
2233: ®ister_handler("update", \&update_resource_handler, 0 ,1, 0);
2234:
1.308 albertel 2235: sub devalidate_meta_cache {
2236: my ($url) = @_;
2237: use Cache::Memcached;
2238: my $memcache = new Cache::Memcached({'servers'=>['127.0.0.1:11211']});
1.365 albertel 2239: $url = &Apache::lonnet::declutter($url);
1.308 albertel 2240: $url =~ s-\.meta$--;
2241: my $id = &escape('meta:'.$url);
2242: $memcache->delete($id);
2243: }
2244:
1.225 foxr 2245: #
1.226 foxr 2246: # Fetch a user file from a remote server to the user's home directory
2247: # userfiles subdir.
1.225 foxr 2248: # Parameters:
2249: # $cmd - The command that got us here.
2250: # $tail - Tail of the command (remaining parameters).
2251: # $client - File descriptor connected to client.
2252: # Returns
2253: # 0 - Requested to exit, caller should shut down.
2254: # 1 - Continue processing.
2255: #
2256: sub fetch_user_file_handler {
2257:
2258: my ($cmd, $tail, $client) = @_;
2259:
2260: my $userinput = "$cmd:$tail";
2261: my $fname = $tail;
1.232 foxr 2262: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
1.225 foxr 2263: my $udir=&propath($udom,$uname).'/userfiles';
2264: unless (-e $udir) {
2265: mkdir($udir,0770);
2266: }
1.232 foxr 2267: Debug("fetch user file for $fname");
1.225 foxr 2268: if (-e $udir) {
2269: $ufile=~s/^[\.\~]+//;
1.232 foxr 2270:
2271: # IF necessary, create the path right down to the file.
2272: # Note that any regular files in the way of this path are
2273: # wiped out to deal with some earlier folly of mine.
2274:
1.267 raeburn 2275: if (!&mkpath($udir.'/'.$ufile)) {
1.264 albertel 2276: &Failure($client, "unable_to_create\n", $userinput);
1.232 foxr 2277: }
2278:
1.225 foxr 2279: my $destname=$udir.'/'.$ufile;
2280: my $transname=$udir.'/'.$ufile.'.in.transit';
1.467.2.5 raeburn 2281: my $clientprotocol=$Apache::lonnet::protocol{$clientname};
2282: $clientprotocol = 'http' if ($clientprotocol ne 'https');
2283: my $remoteurl=$clientprotocol.'://'.$clientip.'/userfiles/'.$fname;
1.225 foxr 2284: my $response;
1.232 foxr 2285: Debug("Remote URL : $remoteurl Transfername $transname Destname: $destname");
1.225 foxr 2286: alarm(120);
2287: {
2288: my $ua=new LWP::UserAgent;
2289: my $request=new HTTP::Request('GET',"$remoteurl");
2290: $response=$ua->request($request,$transname);
2291: }
2292: alarm(0);
2293: if ($response->is_error()) {
2294: unlink($transname);
2295: my $message=$response->status_line;
2296: &logthis("LWP GET: $message for $fname ($remoteurl)");
2297: &Failure($client, "failed\n", $userinput);
2298: } else {
1.232 foxr 2299: Debug("Renaming $transname to $destname");
1.225 foxr 2300: if (!rename($transname,$destname)) {
2301: &logthis("Unable to move $transname to $destname");
2302: unlink($transname);
2303: &Failure($client, "failed\n", $userinput);
2304: } else {
2305: &Reply($client, "ok\n", $userinput);
2306: }
2307: }
2308: } else {
2309: &Failure($client, "not_home\n", $userinput);
2310: }
2311: return 1;
2312: }
2313: ®ister_handler("fetchuserfile", \&fetch_user_file_handler, 0, 1, 0);
2314:
1.226 foxr 2315: #
2316: # Remove a file from a user's home directory userfiles subdirectory.
2317: # Parameters:
2318: # cmd - the Lond request keyword that got us here.
2319: # tail - the part of the command past the keyword.
2320: # client- File descriptor connected with the client.
2321: #
2322: # Returns:
2323: # 1 - Continue processing.
2324: sub remove_user_file_handler {
2325: my ($cmd, $tail, $client) = @_;
2326:
2327: my ($fname) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2328:
2329: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
2330: if ($ufile =~m|/\.\./|) {
2331: # any files paths with /../ in them refuse
2332: # to deal with
2333: &Failure($client, "refused\n", "$cmd:$tail");
2334: } else {
2335: my $udir = &propath($udom,$uname);
2336: if (-e $udir) {
2337: my $file=$udir.'/userfiles/'.$ufile;
2338: if (-e $file) {
1.253 foxr 2339: #
2340: # If the file is a regular file unlink is fine...
2341: # However it's possible the client wants a dir.
2342: # removed, in which case rmdir is more approprate:
2343: #
1.240 banghart 2344: if (-f $file){
1.241 albertel 2345: unlink($file);
2346: } elsif(-d $file) {
2347: rmdir($file);
1.240 banghart 2348: }
1.226 foxr 2349: if (-e $file) {
1.253 foxr 2350: # File is still there after we deleted it ?!?
2351:
1.226 foxr 2352: &Failure($client, "failed\n", "$cmd:$tail");
2353: } else {
2354: &Reply($client, "ok\n", "$cmd:$tail");
2355: }
2356: } else {
2357: &Failure($client, "not_found\n", "$cmd:$tail");
2358: }
2359: } else {
2360: &Failure($client, "not_home\n", "$cmd:$tail");
2361: }
2362: }
2363: return 1;
2364: }
2365: ®ister_handler("removeuserfile", \&remove_user_file_handler, 0,1,0);
2366:
1.236 albertel 2367: #
2368: # make a directory in a user's home directory userfiles subdirectory.
2369: # Parameters:
2370: # cmd - the Lond request keyword that got us here.
2371: # tail - the part of the command past the keyword.
2372: # client- File descriptor connected with the client.
2373: #
2374: # Returns:
2375: # 1 - Continue processing.
2376: sub mkdir_user_file_handler {
2377: my ($cmd, $tail, $client) = @_;
2378:
2379: my ($dir) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2380: $dir=&unescape($dir);
2381: my ($udom,$uname,$ufile) = ($dir =~ m|^([^/]+)/([^/]+)/(.+)$|);
2382: if ($ufile =~m|/\.\./|) {
2383: # any files paths with /../ in them refuse
2384: # to deal with
2385: &Failure($client, "refused\n", "$cmd:$tail");
2386: } else {
2387: my $udir = &propath($udom,$uname);
2388: if (-e $udir) {
1.264 albertel 2389: my $newdir=$udir.'/userfiles/'.$ufile.'/';
2390: if (!&mkpath($newdir)) {
2391: &Failure($client, "failed\n", "$cmd:$tail");
1.236 albertel 2392: }
1.264 albertel 2393: &Reply($client, "ok\n", "$cmd:$tail");
1.236 albertel 2394: } else {
2395: &Failure($client, "not_home\n", "$cmd:$tail");
2396: }
2397: }
2398: return 1;
2399: }
2400: ®ister_handler("mkdiruserfile", \&mkdir_user_file_handler, 0,1,0);
2401:
1.237 albertel 2402: #
2403: # rename a file in a user's home directory userfiles subdirectory.
2404: # Parameters:
2405: # cmd - the Lond request keyword that got us here.
2406: # tail - the part of the command past the keyword.
2407: # client- File descriptor connected with the client.
2408: #
2409: # Returns:
2410: # 1 - Continue processing.
2411: sub rename_user_file_handler {
2412: my ($cmd, $tail, $client) = @_;
2413:
2414: my ($udom,$uname,$old,$new) = split(/:/, $tail);
2415: $old=&unescape($old);
2416: $new=&unescape($new);
2417: if ($new =~m|/\.\./| || $old =~m|/\.\./|) {
2418: # any files paths with /../ in them refuse to deal with
2419: &Failure($client, "refused\n", "$cmd:$tail");
2420: } else {
2421: my $udir = &propath($udom,$uname);
2422: if (-e $udir) {
2423: my $oldfile=$udir.'/userfiles/'.$old;
2424: my $newfile=$udir.'/userfiles/'.$new;
2425: if (-e $newfile) {
2426: &Failure($client, "exists\n", "$cmd:$tail");
2427: } elsif (! -e $oldfile) {
2428: &Failure($client, "not_found\n", "$cmd:$tail");
2429: } else {
2430: if (!rename($oldfile,$newfile)) {
2431: &Failure($client, "failed\n", "$cmd:$tail");
2432: } else {
2433: &Reply($client, "ok\n", "$cmd:$tail");
2434: }
2435: }
2436: } else {
2437: &Failure($client, "not_home\n", "$cmd:$tail");
2438: }
2439: }
2440: return 1;
2441: }
2442: ®ister_handler("renameuserfile", \&rename_user_file_handler, 0,1,0);
2443:
1.227 foxr 2444: #
1.382 albertel 2445: # Checks if the specified user has an active session on the server
2446: # return ok if so, not_found if not
2447: #
2448: # Parameters:
2449: # cmd - The request keyword that dispatched to tus.
2450: # tail - The tail of the request (colon separated parameters).
2451: # client - Filehandle open on the client.
2452: # Return:
2453: # 1.
2454: sub user_has_session_handler {
2455: my ($cmd, $tail, $client) = @_;
2456:
2457: my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail));
2458:
2459: opendir(DIR,$perlvar{'lonIDsDir'});
2460: my $filename;
2461: while ($filename=readdir(DIR)) {
2462: last if ($filename=~/^\Q$uname\E_\d+_\Q$udom\E_/);
2463: }
2464: if ($filename) {
2465: &Reply($client, "ok\n", "$cmd:$tail");
2466: } else {
2467: &Failure($client, "not_found\n", "$cmd:$tail");
2468: }
2469: return 1;
2470:
2471: }
2472: ®ister_handler("userhassession", \&user_has_session_handler, 0,1,0);
2473:
2474: #
1.263 albertel 2475: # Authenticate access to a user file by checking that the token the user's
2476: # passed also exists in their session file
1.227 foxr 2477: #
2478: # Parameters:
2479: # cmd - The request keyword that dispatched to tus.
2480: # tail - The tail of the request (colon separated parameters).
2481: # client - Filehandle open on the client.
2482: # Return:
2483: # 1.
2484: sub token_auth_user_file_handler {
2485: my ($cmd, $tail, $client) = @_;
2486:
2487: my ($fname, $session) = split(/:/, $tail);
2488:
2489: chomp($session);
1.393 raeburn 2490: my $reply="non_auth";
1.343 albertel 2491: my $file = $perlvar{'lonIDsDir'}.'/'.$session.'.id';
2492: if (open(ENVIN,"$file")) {
1.332 albertel 2493: flock(ENVIN,LOCK_SH);
1.343 albertel 2494: tie(my %disk_env,'GDBM_File',"$file",&GDBM_READER(),0640);
2495: if (exists($disk_env{"userfile.$fname"})) {
1.393 raeburn 2496: $reply="ok";
1.343 albertel 2497: } else {
2498: foreach my $envname (keys(%disk_env)) {
2499: if ($envname=~ m|^userfile\.\Q$fname\E|) {
1.393 raeburn 2500: $reply="ok";
1.343 albertel 2501: last;
2502: }
2503: }
1.227 foxr 2504: }
1.343 albertel 2505: untie(%disk_env);
1.227 foxr 2506: close(ENVIN);
1.387 albertel 2507: &Reply($client, \$reply, "$cmd:$tail");
1.227 foxr 2508: } else {
2509: &Failure($client, "invalid_token\n", "$cmd:$tail");
2510: }
2511: return 1;
2512:
2513: }
2514: ®ister_handler("tokenauthuserfile", \&token_auth_user_file_handler, 0,1,0);
1.229 foxr 2515:
2516: #
2517: # Unsubscribe from a resource.
2518: #
2519: # Parameters:
2520: # $cmd - The command that got us here.
2521: # $tail - Tail of the command (remaining parameters).
2522: # $client - File descriptor connected to client.
2523: # Returns
2524: # 0 - Requested to exit, caller should shut down.
2525: # 1 - Continue processing.
2526: #
2527: sub unsubscribe_handler {
2528: my ($cmd, $tail, $client) = @_;
2529:
2530: my $userinput= "$cmd:$tail";
2531:
2532: my ($fname) = split(/:/,$tail); # Split in case there's extrs.
2533:
2534: &Debug("Unsubscribing $fname");
2535: if (-e $fname) {
2536: &Debug("Exists");
2537: &Reply($client, &unsub($fname,$clientip), $userinput);
2538: } else {
2539: &Failure($client, "not_found\n", $userinput);
2540: }
2541: return 1;
2542: }
2543: ®ister_handler("unsub", \&unsubscribe_handler, 0, 1, 0);
1.263 albertel 2544:
1.230 foxr 2545: # Subscribe to a resource
2546: #
2547: # Parameters:
2548: # $cmd - The command that got us here.
2549: # $tail - Tail of the command (remaining parameters).
2550: # $client - File descriptor connected to client.
2551: # Returns
2552: # 0 - Requested to exit, caller should shut down.
2553: # 1 - Continue processing.
2554: #
2555: sub subscribe_handler {
2556: my ($cmd, $tail, $client)= @_;
2557:
2558: my $userinput = "$cmd:$tail";
2559:
2560: &Reply( $client, &subscribe($userinput,$clientip), $userinput);
2561:
2562: return 1;
2563: }
2564: ®ister_handler("sub", \&subscribe_handler, 0, 1, 0);
2565:
2566: #
1.379 albertel 2567: # Determine the latest version of a resource (it looks for the highest
2568: # past version and then returns that +1)
1.230 foxr 2569: #
2570: # Parameters:
2571: # $cmd - The command that got us here.
2572: # $tail - Tail of the command (remaining parameters).
1.379 albertel 2573: # (Should consist of an absolute path to a file)
1.230 foxr 2574: # $client - File descriptor connected to client.
2575: # Returns
2576: # 0 - Requested to exit, caller should shut down.
2577: # 1 - Continue processing.
2578: #
2579: sub current_version_handler {
2580: my ($cmd, $tail, $client) = @_;
2581:
2582: my $userinput= "$cmd:$tail";
2583:
2584: my $fname = $tail;
2585: &Reply( $client, ¤tversion($fname)."\n", $userinput);
2586: return 1;
2587:
2588: }
2589: ®ister_handler("currentversion", \¤t_version_handler, 0, 1, 0);
2590:
2591: # Make an entry in a user's activity log.
2592: #
2593: # Parameters:
2594: # $cmd - The command that got us here.
2595: # $tail - Tail of the command (remaining parameters).
2596: # $client - File descriptor connected to client.
2597: # Returns
2598: # 0 - Requested to exit, caller should shut down.
2599: # 1 - Continue processing.
2600: #
2601: sub activity_log_handler {
2602: my ($cmd, $tail, $client) = @_;
2603:
2604:
2605: my $userinput= "$cmd:$tail";
2606:
2607: my ($udom,$uname,$what)=split(/:/,$tail);
2608: chomp($what);
2609: my $proname=&propath($udom,$uname);
2610: my $now=time;
2611: my $hfh;
2612: if ($hfh=IO::File->new(">>$proname/activity.log")) {
2613: print $hfh "$now:$clientname:$what\n";
2614: &Reply( $client, "ok\n", $userinput);
2615: } else {
2616: &Failure($client, "error: ".($!+0)." IO::File->new Failed "
2617: ."while attempting log\n",
2618: $userinput);
2619: }
2620:
2621: return 1;
2622: }
1.263 albertel 2623: ®ister_handler("log", \&activity_log_handler, 0, 1, 0);
1.230 foxr 2624:
2625: #
2626: # Put a namespace entry in a user profile hash.
2627: # My druthers would be for this to be an encrypted interaction too.
2628: # anything that might be an inadvertent covert channel about either
2629: # user authentication or user personal information....
2630: #
2631: # Parameters:
2632: # $cmd - The command that got us here.
2633: # $tail - Tail of the command (remaining parameters).
2634: # $client - File descriptor connected to client.
2635: # Returns
2636: # 0 - Requested to exit, caller should shut down.
2637: # 1 - Continue processing.
2638: #
2639: sub put_user_profile_entry {
2640: my ($cmd, $tail, $client) = @_;
1.229 foxr 2641:
1.230 foxr 2642: my $userinput = "$cmd:$tail";
2643:
1.242 raeburn 2644: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
1.230 foxr 2645: if ($namespace ne 'roles') {
2646: chomp($what);
2647: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2648: &GDBM_WRCREAT(),"P",$what);
2649: if($hashref) {
2650: my @pairs=split(/\&/,$what);
2651: foreach my $pair (@pairs) {
2652: my ($key,$value)=split(/=/,$pair);
2653: $hashref->{$key}=$value;
2654: }
1.311 albertel 2655: if (&untie_user_hash($hashref)) {
1.230 foxr 2656: &Reply( $client, "ok\n", $userinput);
2657: } else {
2658: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
2659: "while attempting put\n",
2660: $userinput);
2661: }
2662: } else {
1.316 albertel 2663: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.230 foxr 2664: "while attempting put\n", $userinput);
2665: }
2666: } else {
2667: &Failure( $client, "refused\n", $userinput);
2668: }
2669:
2670: return 1;
2671: }
2672: ®ister_handler("put", \&put_user_profile_entry, 0, 1, 0);
2673:
1.283 albertel 2674: # Put a piece of new data in hash, returns error if entry already exists
2675: # Parameters:
2676: # $cmd - The command that got us here.
2677: # $tail - Tail of the command (remaining parameters).
2678: # $client - File descriptor connected to client.
2679: # Returns
2680: # 0 - Requested to exit, caller should shut down.
2681: # 1 - Continue processing.
2682: #
2683: sub newput_user_profile_entry {
2684: my ($cmd, $tail, $client) = @_;
2685:
2686: my $userinput = "$cmd:$tail";
2687:
2688: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
2689: if ($namespace eq 'roles') {
2690: &Failure( $client, "refused\n", $userinput);
2691: return 1;
2692: }
2693:
2694: chomp($what);
2695:
2696: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2697: &GDBM_WRCREAT(),"N",$what);
2698: if(!$hashref) {
1.316 albertel 2699: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.283 albertel 2700: "while attempting put\n", $userinput);
2701: return 1;
2702: }
2703:
2704: my @pairs=split(/\&/,$what);
2705: foreach my $pair (@pairs) {
2706: my ($key,$value)=split(/=/,$pair);
2707: if (exists($hashref->{$key})) {
2708: &Failure($client, "key_exists: ".$key."\n",$userinput);
2709: return 1;
2710: }
2711: }
2712:
2713: foreach my $pair (@pairs) {
2714: my ($key,$value)=split(/=/,$pair);
2715: $hashref->{$key}=$value;
2716: }
2717:
1.311 albertel 2718: if (&untie_user_hash($hashref)) {
1.283 albertel 2719: &Reply( $client, "ok\n", $userinput);
2720: } else {
2721: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
2722: "while attempting put\n",
2723: $userinput);
2724: }
2725: return 1;
2726: }
2727: ®ister_handler("newput", \&newput_user_profile_entry, 0, 1, 0);
2728:
1.230 foxr 2729: #
2730: # Increment a profile entry in the user history file.
2731: # The history contains keyword value pairs. In this case,
2732: # The value itself is a pair of numbers. The first, the current value
2733: # the second an increment that this function applies to the current
2734: # value.
2735: #
2736: # Parameters:
2737: # $cmd - The command that got us here.
2738: # $tail - Tail of the command (remaining parameters).
2739: # $client - File descriptor connected to client.
2740: # Returns
2741: # 0 - Requested to exit, caller should shut down.
2742: # 1 - Continue processing.
2743: #
2744: sub increment_user_value_handler {
2745: my ($cmd, $tail, $client) = @_;
2746:
2747: my $userinput = "$cmd:$tail";
2748:
2749: my ($udom,$uname,$namespace,$what) =split(/:/,$tail);
2750: if ($namespace ne 'roles') {
2751: chomp($what);
2752: my $hashref = &tie_user_hash($udom, $uname,
2753: $namespace, &GDBM_WRCREAT(),
2754: "P",$what);
2755: if ($hashref) {
2756: my @pairs=split(/\&/,$what);
2757: foreach my $pair (@pairs) {
2758: my ($key,$value)=split(/=/,$pair);
1.284 raeburn 2759: $value = &unescape($value);
1.230 foxr 2760: # We could check that we have a number...
2761: if (! defined($value) || $value eq '') {
2762: $value = 1;
2763: }
2764: $hashref->{$key}+=$value;
1.284 raeburn 2765: if ($namespace eq 'nohist_resourcetracker') {
2766: if ($hashref->{$key} < 0) {
2767: $hashref->{$key} = 0;
2768: }
2769: }
1.230 foxr 2770: }
1.311 albertel 2771: if (&untie_user_hash($hashref)) {
1.230 foxr 2772: &Reply( $client, "ok\n", $userinput);
2773: } else {
2774: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
2775: "while attempting inc\n", $userinput);
2776: }
2777: } else {
2778: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
2779: "while attempting inc\n", $userinput);
2780: }
2781: } else {
2782: &Failure($client, "refused\n", $userinput);
2783: }
2784:
2785: return 1;
2786: }
2787: ®ister_handler("inc", \&increment_user_value_handler, 0, 1, 0);
2788:
2789: #
2790: # Put a new role for a user. Roles are LonCAPA's packaging of permissions.
2791: # Each 'role' a user has implies a set of permissions. Adding a new role
2792: # for a person grants the permissions packaged with that role
2793: # to that user when the role is selected.
2794: #
2795: # Parameters:
2796: # $cmd - The command string (rolesput).
2797: # $tail - The remainder of the request line. For rolesput this
2798: # consists of a colon separated list that contains:
2799: # The domain and user that is granting the role (logged).
2800: # The domain and user that is getting the role.
2801: # The roles being granted as a set of & separated pairs.
2802: # each pair a key value pair.
2803: # $client - File descriptor connected to the client.
2804: # Returns:
2805: # 0 - If the daemon should exit
2806: # 1 - To continue processing.
2807: #
2808: #
2809: sub roles_put_handler {
2810: my ($cmd, $tail, $client) = @_;
2811:
2812: my $userinput = "$cmd:$tail";
2813:
2814: my ( $exedom, $exeuser, $udom, $uname, $what) = split(/:/,$tail);
2815:
2816:
2817: my $namespace='roles';
2818: chomp($what);
2819: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2820: &GDBM_WRCREAT(), "P",
2821: "$exedom:$exeuser:$what");
2822: #
2823: # Log the attempt to set a role. The {}'s here ensure that the file
2824: # handle is open for the minimal amount of time. Since the flush
2825: # is done on close this improves the chances the log will be an un-
2826: # corrupted ordered thing.
2827: if ($hashref) {
1.261 foxr 2828: my $pass_entry = &get_auth_type($udom, $uname);
2829: my ($auth_type,$pwd) = split(/:/, $pass_entry);
2830: $auth_type = $auth_type.":";
1.230 foxr 2831: my @pairs=split(/\&/,$what);
2832: foreach my $pair (@pairs) {
2833: my ($key,$value)=split(/=/,$pair);
2834: &manage_permissions($key, $udom, $uname,
1.260 foxr 2835: $auth_type);
1.230 foxr 2836: $hashref->{$key}=$value;
2837: }
1.311 albertel 2838: if (&untie_user_hash($hashref)) {
1.230 foxr 2839: &Reply($client, "ok\n", $userinput);
2840: } else {
2841: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
2842: "while attempting rolesput\n", $userinput);
2843: }
2844: } else {
2845: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
2846: "while attempting rolesput\n", $userinput);
2847: }
2848: return 1;
2849: }
2850: ®ister_handler("rolesput", \&roles_put_handler, 1,1,0); # Encoded client only.
2851:
2852: #
1.231 foxr 2853: # Deletes (removes) a role for a user. This is equivalent to removing
2854: # a permissions package associated with the role from the user's profile.
2855: #
2856: # Parameters:
2857: # $cmd - The command (rolesdel)
2858: # $tail - The remainder of the request line. This consists
2859: # of:
2860: # The domain and user requesting the change (logged)
2861: # The domain and user being changed.
2862: # The roles being revoked. These are shipped to us
2863: # as a bunch of & separated role name keywords.
2864: # $client - The file handle open on the client.
2865: # Returns:
2866: # 1 - Continue processing
2867: # 0 - Exit.
2868: #
2869: sub roles_delete_handler {
2870: my ($cmd, $tail, $client) = @_;
2871:
2872: my $userinput = "$cmd:$tail";
2873:
2874: my ($exedom,$exeuser,$udom,$uname,$what)=split(/:/,$tail);
2875: &Debug("cmd = ".$cmd." exedom= ".$exedom."user = ".$exeuser." udom=".$udom.
2876: "what = ".$what);
2877: my $namespace='roles';
2878: chomp($what);
2879: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2880: &GDBM_WRCREAT(), "D",
2881: "$exedom:$exeuser:$what");
2882:
2883: if ($hashref) {
2884: my @rolekeys=split(/\&/,$what);
2885:
2886: foreach my $key (@rolekeys) {
2887: delete $hashref->{$key};
2888: }
1.315 albertel 2889: if (&untie_user_hash($hashref)) {
1.231 foxr 2890: &Reply($client, "ok\n", $userinput);
2891: } else {
2892: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
2893: "while attempting rolesdel\n", $userinput);
2894: }
2895: } else {
2896: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
2897: "while attempting rolesdel\n", $userinput);
2898: }
2899:
2900: return 1;
2901: }
2902: ®ister_handler("rolesdel", \&roles_delete_handler, 1,1, 0); # Encoded client only
2903:
2904: # Unencrypted get from a user's profile database. See
2905: # GetProfileEntryEncrypted for a version that does end-to-end encryption.
2906: # This function retrieves a keyed item from a specific named database in the
2907: # user's directory.
2908: #
2909: # Parameters:
2910: # $cmd - Command request keyword (get).
2911: # $tail - Tail of the command. This is a colon separated list
2912: # consisting of the domain and username that uniquely
2913: # identifies the profile,
2914: # The 'namespace' which selects the gdbm file to
2915: # do the lookup in,
2916: # & separated list of keys to lookup. Note that
2917: # the values are returned as an & separated list too.
2918: # $client - File descriptor open on the client.
2919: # Returns:
2920: # 1 - Continue processing.
2921: # 0 - Exit.
2922: #
2923: sub get_profile_entry {
2924: my ($cmd, $tail, $client) = @_;
2925:
2926: my $userinput= "$cmd:$tail";
2927:
2928: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
2929: chomp($what);
1.255 foxr 2930:
1.390 raeburn 2931:
1.255 foxr 2932: my $replystring = read_profile($udom, $uname, $namespace, $what);
2933: my ($first) = split(/:/,$replystring);
2934: if($first ne "error") {
1.387 albertel 2935: &Reply($client, \$replystring, $userinput);
1.231 foxr 2936: } else {
1.255 foxr 2937: &Failure($client, $replystring." while attempting get\n", $userinput);
1.231 foxr 2938: }
2939: return 1;
1.255 foxr 2940:
2941:
1.231 foxr 2942: }
2943: ®ister_handler("get", \&get_profile_entry, 0,1,0);
2944:
2945: #
2946: # Process the encrypted get request. Note that the request is sent
2947: # in clear, but the reply is encrypted. This is a small covert channel:
2948: # information about the sensitive keys is given to the snooper. Just not
2949: # information about the values of the sensitive key. Hmm if I wanted to
2950: # know these I'd snoop for the egets. Get the profile item names from them
2951: # and then issue a get for them since there's no enforcement of the
2952: # requirement of an encrypted get for particular profile items. If I
2953: # were re-doing this, I'd force the request to be encrypted as well as the
2954: # reply. I'd also just enforce encrypted transactions for all gets since
2955: # that would prevent any covert channel snooping.
2956: #
2957: # Parameters:
2958: # $cmd - Command keyword of request (eget).
2959: # $tail - Tail of the command. See GetProfileEntry
# for more information about this.
2960: # $client - File open on the client.
2961: # Returns:
2962: # 1 - Continue processing
2963: # 0 - server should exit.
2964: sub get_profile_entry_encrypted {
2965: my ($cmd, $tail, $client) = @_;
2966:
2967: my $userinput = "$cmd:$tail";
2968:
1.339 albertel 2969: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
1.231 foxr 2970: chomp($what);
1.255 foxr 2971: my $qresult = read_profile($udom, $uname, $namespace, $what);
2972: my ($first) = split(/:/, $qresult);
2973: if($first ne "error") {
2974:
2975: if ($cipher) {
2976: my $cmdlength=length($qresult);
2977: $qresult.=" ";
2978: my $encqresult='';
2979: for(my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
2980: $encqresult.= unpack("H16",
2981: $cipher->encrypt(substr($qresult,
2982: $encidx,
2983: 8)));
2984: }
2985: &Reply( $client, "enc:$cmdlength:$encqresult\n", $userinput);
2986: } else {
1.231 foxr 2987: &Failure( $client, "error:no_key\n", $userinput);
2988: }
2989: } else {
1.255 foxr 2990: &Failure($client, "$qresult while attempting eget\n", $userinput);
2991:
1.231 foxr 2992: }
2993:
2994: return 1;
2995: }
1.255 foxr 2996: ®ister_handler("eget", \&get_profile_entry_encrypted, 0, 1, 0);
1.263 albertel 2997:
1.231 foxr 2998: #
2999: # Deletes a key in a user profile database.
3000: #
3001: # Parameters:
3002: # $cmd - Command keyword (del).
3003: # $tail - Command tail. IN this case a colon
3004: # separated list containing:
3005: # The domain and user that identifies uniquely
3006: # the identity of the user.
3007: # The profile namespace (name of the profile
3008: # database file).
3009: # & separated list of keywords to delete.
3010: # $client - File open on client socket.
3011: # Returns:
3012: # 1 - Continue processing
3013: # 0 - Exit server.
3014: #
3015: #
3016: sub delete_profile_entry {
3017: my ($cmd, $tail, $client) = @_;
3018:
3019: my $userinput = "cmd:$tail";
3020:
3021: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3022: chomp($what);
3023: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3024: &GDBM_WRCREAT(),
3025: "D",$what);
3026: if ($hashref) {
3027: my @keys=split(/\&/,$what);
3028: foreach my $key (@keys) {
3029: delete($hashref->{$key});
3030: }
1.315 albertel 3031: if (&untie_user_hash($hashref)) {
1.231 foxr 3032: &Reply($client, "ok\n", $userinput);
3033: } else {
3034: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3035: "while attempting del\n", $userinput);
3036: }
3037: } else {
3038: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3039: "while attempting del\n", $userinput);
3040: }
3041: return 1;
3042: }
3043: ®ister_handler("del", \&delete_profile_entry, 0, 1, 0);
1.263 albertel 3044:
1.231 foxr 3045: #
3046: # List the set of keys that are defined in a profile database file.
3047: # A successful reply from this will contain an & separated list of
3048: # the keys.
3049: # Parameters:
3050: # $cmd - Command request (keys).
3051: # $tail - Remainder of the request, a colon separated
3052: # list containing domain/user that identifies the
3053: # user being queried, and the database namespace
3054: # (database filename essentially).
3055: # $client - File open on the client.
3056: # Returns:
3057: # 1 - Continue processing.
3058: # 0 - Exit the server.
3059: #
3060: sub get_profile_keys {
3061: my ($cmd, $tail, $client) = @_;
3062:
3063: my $userinput = "$cmd:$tail";
3064:
3065: my ($udom,$uname,$namespace)=split(/:/,$tail);
3066: my $qresult='';
3067: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3068: &GDBM_READER());
3069: if ($hashref) {
3070: foreach my $key (keys %$hashref) {
3071: $qresult.="$key&";
3072: }
1.315 albertel 3073: if (&untie_user_hash($hashref)) {
1.231 foxr 3074: $qresult=~s/\&$//;
1.387 albertel 3075: &Reply($client, \$qresult, $userinput);
1.231 foxr 3076: } else {
3077: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3078: "while attempting keys\n", $userinput);
3079: }
3080: } else {
3081: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3082: "while attempting keys\n", $userinput);
3083: }
3084:
3085: return 1;
3086: }
3087: ®ister_handler("keys", \&get_profile_keys, 0, 1, 0);
3088:
3089: #
3090: # Dump the contents of a user profile database.
3091: # Note that this constitutes a very large covert channel too since
3092: # the dump will return sensitive information that is not encrypted.
3093: # The naive security assumption is that the session negotiation ensures
3094: # our client is trusted and I don't believe that's assured at present.
3095: # Sure want badly to go to ssl or tls. Of course if my peer isn't really
3096: # a LonCAPA node they could have negotiated an encryption key too so >sigh<.
3097: #
3098: # Parameters:
3099: # $cmd - The command request keyword (currentdump).
3100: # $tail - Remainder of the request, consisting of a colon
3101: # separated list that has the domain/username and
3102: # the namespace to dump (database file).
3103: # $client - file open on the remote client.
3104: # Returns:
3105: # 1 - Continue processing.
3106: # 0 - Exit the server.
3107: #
3108: sub dump_profile_database {
3109: my ($cmd, $tail, $client) = @_;
3110:
3111: my $userinput = "$cmd:$tail";
3112:
3113: my ($udom,$uname,$namespace) = split(/:/,$tail);
3114: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3115: &GDBM_READER());
3116: if ($hashref) {
3117: # Structure of %data:
3118: # $data{$symb}->{$parameter}=$value;
3119: # $data{$symb}->{'v.'.$parameter}=$version;
3120: # since $parameter will be unescaped, we do not
3121: # have to worry about silly parameter names...
3122:
3123: my $qresult='';
3124: my %data = (); # A hash of anonymous hashes..
3125: while (my ($key,$value) = each(%$hashref)) {
3126: my ($v,$symb,$param) = split(/:/,$key);
3127: next if ($v eq 'version' || $symb eq 'keys');
3128: next if (exists($data{$symb}) &&
3129: exists($data{$symb}->{$param}) &&
3130: $data{$symb}->{'v.'.$param} > $v);
3131: $data{$symb}->{$param}=$value;
3132: $data{$symb}->{'v.'.$param}=$v;
3133: }
1.311 albertel 3134: if (&untie_user_hash($hashref)) {
1.231 foxr 3135: while (my ($symb,$param_hash) = each(%data)) {
3136: while(my ($param,$value) = each (%$param_hash)){
3137: next if ($param =~ /^v\./); # Ignore versions...
3138: #
3139: # Just dump the symb=value pairs separated by &
3140: #
3141: $qresult.=$symb.':'.$param.'='.$value.'&';
3142: }
3143: }
3144: chop($qresult);
1.387 albertel 3145: &Reply($client , \$qresult, $userinput);
1.231 foxr 3146: } else {
3147: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3148: "while attempting currentdump\n", $userinput);
3149: }
3150: } else {
3151: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3152: "while attempting currentdump\n", $userinput);
3153: }
3154:
3155: return 1;
3156: }
3157: ®ister_handler("currentdump", \&dump_profile_database, 0, 1, 0);
3158:
3159: #
3160: # Dump a profile database with an optional regular expression
3161: # to match against the keys. In this dump, no effort is made
3162: # to separate symb from version information. Presumably the
3163: # databases that are dumped by this command are of a different
3164: # structure. Need to look at this and improve the documentation of
3165: # both this and the currentdump handler.
3166: # Parameters:
3167: # $cmd - The command keyword.
3168: # $tail - All of the characters after the $cmd:
3169: # These are expected to be a colon
3170: # separated list containing:
3171: # domain/user - identifying the user.
3172: # namespace - identifying the database.
3173: # regexp - optional regular expression
3174: # that is matched against
3175: # database keywords to do
3176: # selective dumps.
3177: # $client - Channel open on the client.
3178: # Returns:
3179: # 1 - Continue processing.
3180: # Side effects:
3181: # response is written to $client.
3182: #
3183: sub dump_with_regexp {
3184: my ($cmd, $tail, $client) = @_;
3185:
3186:
3187: my $userinput = "$cmd:$tail";
3188:
1.450 raeburn 3189: my ($udom,$uname,$namespace,$regexp,$range,$extra)=split(/:/,$tail);
1.231 foxr 3190: if (defined($regexp)) {
3191: $regexp=&unescape($regexp);
3192: } else {
3193: $regexp='.';
3194: }
1.306 albertel 3195: my ($start,$end);
3196: if (defined($range)) {
3197: if ($range =~/^(\d+)\-(\d+)$/) {
3198: ($start,$end) = ($1,$2);
3199: } elsif ($range =~/^(\d+)$/) {
3200: ($start,$end) = (0,$1);
3201: } else {
3202: undef($range);
3203: }
3204: }
1.231 foxr 3205: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3206: &GDBM_READER());
1.456 raeburn 3207: my $skipcheck;
1.231 foxr 3208: if ($hashref) {
3209: my $qresult='';
1.306 albertel 3210: my $count=0;
1.450 raeburn 3211: if ($extra ne '') {
3212: $extra = &Apache::lonnet::thaw_unescape($extra);
1.456 raeburn 3213: $skipcheck = $extra->{'skipcheck'};
1.450 raeburn 3214: }
3215: my @ids = &Apache::lonnet::current_machine_ids();
1.453 raeburn 3216: my (%homecourses,$major,$minor,$now);
1.456 raeburn 3217: if (($namespace eq 'roles') && (!$skipcheck)) {
1.453 raeburn 3218: my $loncaparev = $clientversion;
3219: if ($loncaparev eq '') {
3220: $loncaparev = $Apache::lonnet::loncaparevs{$clientname};
3221: }
3222: if ($loncaparev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?/) {
3223: $major = $1;
3224: $minor = $2;
3225: }
3226: $now = time;
3227: }
1.231 foxr 3228: while (my ($key,$value) = each(%$hashref)) {
1.432 raeburn 3229: if ($namespace eq 'roles') {
1.453 raeburn 3230: if ($key =~ m{^/($LONCAPA::match_domain)/($LONCAPA::match_courseid)(/?[^_]*)_(cc|co|in|ta|ep|ad|st|cr)$}) {
1.446 raeburn 3231: my $cdom = $1;
3232: my $cnum = $2;
1.456 raeburn 3233: unless ($skipcheck) {
1.457 raeburn 3234: my ($role,$end,$start) = split(/\_/,$value);
3235: if (!$end || $end > $now) {
3236: next unless (&releasereqd_check($cnum,$cdom,$key,$value,$major,
3237: $minor,\%homecourses,\@ids));
1.458 raeburn 3238: }
1.432 raeburn 3239: }
3240: }
3241: }
1.231 foxr 3242: if ($regexp eq '.') {
1.306 albertel 3243: $count++;
3244: if (defined($range) && $count >= $end) { last; }
3245: if (defined($range) && $count < $start) { next; }
1.231 foxr 3246: $qresult.=$key.'='.$value.'&';
3247: } else {
3248: my $unescapeKey = &unescape($key);
3249: if (eval('$unescapeKey=~/$regexp/')) {
1.306 albertel 3250: $count++;
3251: if (defined($range) && $count >= $end) { last; }
3252: if (defined($range) && $count < $start) { next; }
1.231 foxr 3253: $qresult.="$key=$value&";
3254: }
3255: }
3256: }
1.311 albertel 3257: if (&untie_user_hash($hashref)) {
1.456 raeburn 3258: if (($namespace eq 'roles') && (!$skipcheck)) {
1.453 raeburn 3259: if (keys(%homecourses) > 0) {
3260: $qresult .= &check_homecourses(\%homecourses,$udom,$regexp,$count,
3261: $range,$start,$end,$major,$minor);
3262: }
3263: }
1.231 foxr 3264: chop($qresult);
1.387 albertel 3265: &Reply($client, \$qresult, $userinput);
1.231 foxr 3266: } else {
3267: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3268: "while attempting dump\n", $userinput);
3269: }
3270: } else {
3271: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3272: "while attempting dump\n", $userinput);
3273: }
3274:
3275: return 1;
3276: }
3277: ®ister_handler("dump", \&dump_with_regexp, 0, 1, 0);
3278:
3279: # Store a set of key=value pairs associated with a versioned name.
3280: #
3281: # Parameters:
3282: # $cmd - Request command keyword.
3283: # $tail - Tail of the request. This is a colon
3284: # separated list containing:
3285: # domain/user - User and authentication domain.
3286: # namespace - Name of the database being modified
3287: # rid - Resource keyword to modify.
3288: # what - new value associated with rid.
3289: #
3290: # $client - Socket open on the client.
3291: #
3292: #
3293: # Returns:
3294: # 1 (keep on processing).
3295: # Side-Effects:
3296: # Writes to the client
3297: sub store_handler {
3298: my ($cmd, $tail, $client) = @_;
3299:
3300: my $userinput = "$cmd:$tail";
3301:
3302: my ($udom,$uname,$namespace,$rid,$what) =split(/:/,$tail);
3303: if ($namespace ne 'roles') {
3304:
3305: chomp($what);
3306: my @pairs=split(/\&/,$what);
3307: my $hashref = &tie_user_hash($udom, $uname, $namespace,
1.268 albertel 3308: &GDBM_WRCREAT(), "S",
1.231 foxr 3309: "$rid:$what");
3310: if ($hashref) {
3311: my $now = time;
3312: my @previouskeys=split(/&/,$hashref->{"keys:$rid"});
3313: my $key;
3314: $hashref->{"version:$rid"}++;
3315: my $version=$hashref->{"version:$rid"};
3316: my $allkeys='';
3317: foreach my $pair (@pairs) {
3318: my ($key,$value)=split(/=/,$pair);
3319: $allkeys.=$key.':';
3320: $hashref->{"$version:$rid:$key"}=$value;
3321: }
3322: $hashref->{"$version:$rid:timestamp"}=$now;
3323: $allkeys.='timestamp';
3324: $hashref->{"$version:keys:$rid"}=$allkeys;
1.311 albertel 3325: if (&untie_user_hash($hashref)) {
1.231 foxr 3326: &Reply($client, "ok\n", $userinput);
3327: } else {
3328: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3329: "while attempting store\n", $userinput);
3330: }
3331: } else {
3332: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3333: "while attempting store\n", $userinput);
3334: }
3335: } else {
3336: &Failure($client, "refused\n", $userinput);
3337: }
3338:
3339: return 1;
3340: }
3341: ®ister_handler("store", \&store_handler, 0, 1, 0);
1.263 albertel 3342:
1.323 albertel 3343: # Modify a set of key=value pairs associated with a versioned name.
3344: #
3345: # Parameters:
3346: # $cmd - Request command keyword.
3347: # $tail - Tail of the request. This is a colon
3348: # separated list containing:
3349: # domain/user - User and authentication domain.
3350: # namespace - Name of the database being modified
3351: # rid - Resource keyword to modify.
3352: # v - Version item to modify
3353: # what - new value associated with rid.
3354: #
3355: # $client - Socket open on the client.
3356: #
3357: #
3358: # Returns:
3359: # 1 (keep on processing).
3360: # Side-Effects:
3361: # Writes to the client
3362: sub putstore_handler {
3363: my ($cmd, $tail, $client) = @_;
3364:
3365: my $userinput = "$cmd:$tail";
3366:
3367: my ($udom,$uname,$namespace,$rid,$v,$what) =split(/:/,$tail);
3368: if ($namespace ne 'roles') {
3369:
3370: chomp($what);
3371: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3372: &GDBM_WRCREAT(), "M",
3373: "$rid:$v:$what");
3374: if ($hashref) {
3375: my $now = time;
3376: my %data = &hash_extract($what);
3377: my @allkeys;
3378: while (my($key,$value) = each(%data)) {
3379: push(@allkeys,$key);
3380: $hashref->{"$v:$rid:$key"} = $value;
3381: }
3382: my $allkeys = join(':',@allkeys);
3383: $hashref->{"$v:keys:$rid"}=$allkeys;
3384:
3385: if (&untie_user_hash($hashref)) {
3386: &Reply($client, "ok\n", $userinput);
3387: } else {
3388: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3389: "while attempting store\n", $userinput);
3390: }
3391: } else {
3392: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3393: "while attempting store\n", $userinput);
3394: }
3395: } else {
3396: &Failure($client, "refused\n", $userinput);
3397: }
3398:
3399: return 1;
3400: }
3401: ®ister_handler("putstore", \&putstore_handler, 0, 1, 0);
3402:
3403: sub hash_extract {
3404: my ($str)=@_;
3405: my %hash;
3406: foreach my $pair (split(/\&/,$str)) {
3407: my ($key,$value)=split(/=/,$pair);
3408: $hash{$key}=$value;
3409: }
3410: return (%hash);
3411: }
3412: sub hash_to_str {
3413: my ($hash_ref)=@_;
3414: my $str;
3415: foreach my $key (keys(%$hash_ref)) {
3416: $str.=$key.'='.$hash_ref->{$key}.'&';
3417: }
3418: $str=~s/\&$//;
3419: return $str;
3420: }
3421:
1.231 foxr 3422: #
3423: # Dump out all versions of a resource that has key=value pairs associated
3424: # with it for each version. These resources are built up via the store
3425: # command.
3426: #
3427: # Parameters:
3428: # $cmd - Command keyword.
3429: # $tail - Remainder of the request which consists of:
3430: # domain/user - User and auth. domain.
3431: # namespace - name of resource database.
3432: # rid - Resource id.
3433: # $client - socket open on the client.
3434: #
3435: # Returns:
3436: # 1 indicating the caller should not yet exit.
3437: # Side-effects:
3438: # Writes a reply to the client.
3439: # The reply is a string of the following shape:
3440: # version=current&version:keys=k1:k2...&1:k1=v1&1:k2=v2...
3441: # Where the 1 above represents version 1.
3442: # this continues for all pairs of keys in all versions.
3443: #
3444: #
3445: #
3446: #
3447: sub restore_handler {
3448: my ($cmd, $tail, $client) = @_;
3449:
3450: my $userinput = "$cmd:$tail"; # Only used for logging purposes.
1.351 banghart 3451: my ($udom,$uname,$namespace,$rid) = split(/:/,$tail);
1.352 albertel 3452: $namespace=~s/\//\_/g;
1.350 albertel 3453: $namespace = &LONCAPA::clean_username($namespace);
1.349 albertel 3454:
1.231 foxr 3455: chomp($rid);
3456: my $qresult='';
1.309 albertel 3457: my $hashref = &tie_user_hash($udom, $uname, $namespace, &GDBM_READER());
3458: if ($hashref) {
3459: my $version=$hashref->{"version:$rid"};
1.231 foxr 3460: $qresult.="version=$version&";
3461: my $scope;
3462: for ($scope=1;$scope<=$version;$scope++) {
1.309 albertel 3463: my $vkeys=$hashref->{"$scope:keys:$rid"};
1.231 foxr 3464: my @keys=split(/:/,$vkeys);
3465: my $key;
3466: $qresult.="$scope:keys=$vkeys&";
3467: foreach $key (@keys) {
1.309 albertel 3468: $qresult.="$scope:$key=".$hashref->{"$scope:$rid:$key"}."&";
1.231 foxr 3469: }
3470: }
1.311 albertel 3471: if (&untie_user_hash($hashref)) {
1.231 foxr 3472: $qresult=~s/\&$//;
1.387 albertel 3473: &Reply( $client, \$qresult, $userinput);
1.231 foxr 3474: } else {
3475: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3476: "while attempting restore\n", $userinput);
3477: }
3478: } else {
3479: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3480: "while attempting restore\n", $userinput);
3481: }
3482:
3483: return 1;
3484:
3485:
3486: }
3487: ®ister_handler("restore", \&restore_handler, 0,1,0);
1.234 foxr 3488:
3489: #
1.324 raeburn 3490: # Add a chat message to a synchronous discussion board.
1.234 foxr 3491: #
3492: # Parameters:
3493: # $cmd - Request keyword.
3494: # $tail - Tail of the command. A colon separated list
3495: # containing:
3496: # cdom - Domain on which the chat board lives
1.324 raeburn 3497: # cnum - Course containing the chat board.
3498: # newpost - Body of the posting.
3499: # group - Optional group, if chat board is only
3500: # accessible in a group within the course
1.234 foxr 3501: # $client - Socket open on the client.
3502: # Returns:
3503: # 1 - Indicating caller should keep on processing.
3504: #
3505: # Side-effects:
3506: # writes a reply to the client.
3507: #
3508: #
3509: sub send_chat_handler {
3510: my ($cmd, $tail, $client) = @_;
3511:
3512:
3513: my $userinput = "$cmd:$tail";
3514:
1.324 raeburn 3515: my ($cdom,$cnum,$newpost,$group)=split(/\:/,$tail);
3516: &chat_add($cdom,$cnum,$newpost,$group);
1.234 foxr 3517: &Reply($client, "ok\n", $userinput);
3518:
3519: return 1;
3520: }
3521: ®ister_handler("chatsend", \&send_chat_handler, 0, 1, 0);
1.263 albertel 3522:
1.234 foxr 3523: #
1.324 raeburn 3524: # Retrieve the set of chat messages from a discussion board.
1.234 foxr 3525: #
3526: # Parameters:
3527: # $cmd - Command keyword that initiated the request.
3528: # $tail - Remainder of the request after the command
3529: # keyword. In this case a colon separated list of
3530: # chat domain - Which discussion board.
3531: # chat id - Discussion thread(?)
3532: # domain/user - Authentication domain and username
3533: # of the requesting person.
1.324 raeburn 3534: # group - Optional course group containing
3535: # the board.
1.234 foxr 3536: # $client - Socket open on the client program.
3537: # Returns:
3538: # 1 - continue processing
3539: # Side effects:
3540: # Response is written to the client.
3541: #
3542: sub retrieve_chat_handler {
3543: my ($cmd, $tail, $client) = @_;
3544:
3545:
3546: my $userinput = "$cmd:$tail";
3547:
1.324 raeburn 3548: my ($cdom,$cnum,$udom,$uname,$group)=split(/\:/,$tail);
1.234 foxr 3549: my $reply='';
1.324 raeburn 3550: foreach (&get_chat($cdom,$cnum,$udom,$uname,$group)) {
1.234 foxr 3551: $reply.=&escape($_).':';
3552: }
3553: $reply=~s/\:$//;
1.387 albertel 3554: &Reply($client, \$reply, $userinput);
1.234 foxr 3555:
3556:
3557: return 1;
3558: }
3559: ®ister_handler("chatretr", \&retrieve_chat_handler, 0, 1, 0);
3560:
3561: #
3562: # Initiate a query of an sql database. SQL query repsonses get put in
3563: # a file for later retrieval. This prevents sql query results from
3564: # bottlenecking the system. Note that with loncnew, perhaps this is
3565: # less of an issue since multiple outstanding requests can be concurrently
3566: # serviced.
3567: #
3568: # Parameters:
3569: # $cmd - COmmand keyword that initiated the request.
3570: # $tail - Remainder of the command after the keyword.
3571: # For this function, this consists of a query and
3572: # 3 arguments that are self-documentingly labelled
3573: # in the original arg1, arg2, arg3.
3574: # $client - Socket open on the client.
3575: # Return:
3576: # 1 - Indicating processing should continue.
3577: # Side-effects:
3578: # a reply is written to $client.
3579: #
3580: sub send_query_handler {
3581: my ($cmd, $tail, $client) = @_;
3582:
3583:
3584: my $userinput = "$cmd:$tail";
3585:
3586: my ($query,$arg1,$arg2,$arg3)=split(/\:/,$tail);
3587: $query=~s/\n*$//g;
3588: &Reply($client, "". &sql_reply("$clientname\&$query".
3589: "\&$arg1"."\&$arg2"."\&$arg3")."\n",
3590: $userinput);
3591:
3592: return 1;
3593: }
3594: ®ister_handler("querysend", \&send_query_handler, 0, 1, 0);
3595:
3596: #
3597: # Add a reply to an sql query. SQL queries are done asyncrhonously.
3598: # The query is submitted via a "querysend" transaction.
3599: # There it is passed on to the lonsql daemon, queued and issued to
3600: # mysql.
3601: # This transaction is invoked when the sql transaction is complete
3602: # it stores the query results in flie and indicates query completion.
3603: # presumably local software then fetches this response... I'm guessing
3604: # the sequence is: lonc does a querysend, we ask lonsql to do it.
3605: # lonsql on completion of the query interacts with the lond of our
3606: # client to do a query reply storing two files:
3607: # - id - The results of the query.
3608: # - id.end - Indicating the transaction completed.
3609: # NOTE: id is a unique id assigned to the query and querysend time.
3610: # Parameters:
3611: # $cmd - Command keyword that initiated this request.
3612: # $tail - Remainder of the tail. In this case that's a colon
3613: # separated list containing the query Id and the
3614: # results of the query.
3615: # $client - Socket open on the client.
3616: # Return:
3617: # 1 - Indicating that we should continue processing.
3618: # Side effects:
3619: # ok written to the client.
3620: #
3621: sub reply_query_handler {
3622: my ($cmd, $tail, $client) = @_;
3623:
3624:
3625: my $userinput = "$cmd:$tail";
3626:
1.339 albertel 3627: my ($id,$reply)=split(/:/,$tail);
1.234 foxr 3628: my $store;
3629: my $execdir=$perlvar{'lonDaemons'};
3630: if ($store=IO::File->new(">$execdir/tmp/$id")) {
3631: $reply=~s/\&/\n/g;
3632: print $store $reply;
3633: close $store;
3634: my $store2=IO::File->new(">$execdir/tmp/$id.end");
3635: print $store2 "done\n";
3636: close $store2;
3637: &Reply($client, "ok\n", $userinput);
3638: } else {
3639: &Failure($client, "error: ".($!+0)
3640: ." IO::File->new Failed ".
3641: "while attempting queryreply\n", $userinput);
3642: }
3643:
3644:
3645: return 1;
3646: }
3647: ®ister_handler("queryreply", \&reply_query_handler, 0, 1, 0);
3648:
3649: #
3650: # Process the courseidput request. Not quite sure what this means
3651: # at the system level sense. It appears a gdbm file in the
3652: # /home/httpd/lonUsers/$domain/nohist_courseids is tied and
3653: # a set of entries made in that database.
3654: #
3655: # Parameters:
3656: # $cmd - The command keyword that initiated this request.
3657: # $tail - Tail of the command. In this case consists of a colon
3658: # separated list contaning the domain to apply this to and
3659: # an ampersand separated list of keyword=value pairs.
1.272 raeburn 3660: # Each value is a colon separated list that includes:
3661: # description, institutional code and course owner.
3662: # For backward compatibility with versions included
3663: # in LON-CAPA 1.1.X (and earlier) and 1.2.X, institutional
3664: # code and/or course owner are preserved from the existing
3665: # record when writing a new record in response to 1.1 or
3666: # 1.2 implementations of lonnet::flushcourselogs().
3667: #
1.234 foxr 3668: # $client - Socket open on the client.
3669: # Returns:
3670: # 1 - indicating that processing should continue
3671: #
3672: # Side effects:
3673: # reply is written to the client.
3674: #
3675: sub put_course_id_handler {
3676: my ($cmd, $tail, $client) = @_;
3677:
3678:
3679: my $userinput = "$cmd:$tail";
3680:
1.266 raeburn 3681: my ($udom, $what) = split(/:/, $tail,2);
1.234 foxr 3682: chomp($what);
3683: my $now=time;
3684: my @pairs=split(/\&/,$what);
3685:
3686: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
3687: if ($hashref) {
3688: foreach my $pair (@pairs) {
1.271 raeburn 3689: my ($key,$courseinfo) = split(/=/,$pair,2);
3690: $courseinfo =~ s/=/:/g;
1.384 raeburn 3691: if (defined($hashref->{$key})) {
3692: my $value = &Apache::lonnet::thaw_unescape($hashref->{$key});
3693: if (ref($value) eq 'HASH') {
3694: my @items = ('description','inst_code','owner','type');
3695: my @new_items = split(/:/,$courseinfo,-1);
3696: my %storehash;
3697: for (my $i=0; $i<@new_items; $i++) {
1.391 raeburn 3698: $storehash{$items[$i]} = &unescape($new_items[$i]);
1.384 raeburn 3699: }
3700: $hashref->{$key} =
3701: &Apache::lonnet::freeze_escape(\%storehash);
3702: my $unesc_key = &unescape($key);
3703: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
3704: next;
1.383 raeburn 3705: }
1.384 raeburn 3706: }
3707: my @current_items = split(/:/,$hashref->{$key},-1);
3708: shift(@current_items); # remove description
3709: pop(@current_items); # remove last access
3710: my $numcurrent = scalar(@current_items);
3711: if ($numcurrent > 3) {
3712: $numcurrent = 3;
3713: }
3714: my @new_items = split(/:/,$courseinfo,-1);
3715: my $numnew = scalar(@new_items);
3716: if ($numcurrent > 0) {
3717: if ($numnew <= $numcurrent) { # flushcourselogs() from pre 2.2
3718: for (my $j=$numcurrent-$numnew; $j>=0; $j--) {
3719: $courseinfo .= ':'.$current_items[$numcurrent-$j-1];
1.333 raeburn 3720: }
1.272 raeburn 3721: }
3722: }
1.384 raeburn 3723: $hashref->{$key}=$courseinfo.':'.$now;
1.234 foxr 3724: }
1.311 albertel 3725: if (&untie_domain_hash($hashref)) {
1.253 foxr 3726: &Reply( $client, "ok\n", $userinput);
1.234 foxr 3727: } else {
1.253 foxr 3728: &Failure($client, "error: ".($!+0)
1.234 foxr 3729: ." untie(GDBM) Failed ".
3730: "while attempting courseidput\n", $userinput);
3731: }
3732: } else {
1.253 foxr 3733: &Failure($client, "error: ".($!+0)
1.234 foxr 3734: ." tie(GDBM) Failed ".
3735: "while attempting courseidput\n", $userinput);
3736: }
3737:
3738: return 1;
3739: }
3740: ®ister_handler("courseidput", \&put_course_id_handler, 0, 1, 0);
3741:
1.383 raeburn 3742: sub put_course_id_hash_handler {
3743: my ($cmd, $tail, $client) = @_;
3744: my $userinput = "$cmd:$tail";
1.384 raeburn 3745: my ($udom,$mode,$what) = split(/:/, $tail,3);
1.383 raeburn 3746: chomp($what);
3747: my $now=time;
3748: my @pairs=split(/\&/,$what);
1.384 raeburn 3749: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
1.383 raeburn 3750: if ($hashref) {
3751: foreach my $pair (@pairs) {
3752: my ($key,$value)=split(/=/,$pair);
1.384 raeburn 3753: my $unesc_key = &unescape($key);
3754: if ($mode ne 'timeonly') {
3755: if (!defined($hashref->{&escape('lasttime:'.$unesc_key)})) {
3756: my $curritems = &Apache::lonnet::thaw_unescape($key);
3757: if (ref($curritems) ne 'HASH') {
3758: my @current_items = split(/:/,$hashref->{$key},-1);
3759: my $lasttime = pop(@current_items);
3760: $hashref->{&escape('lasttime:'.$unesc_key)} = $lasttime;
3761: } else {
3762: $hashref->{&escape('lasttime:'.$unesc_key)} = '';
3763: }
3764: }
3765: $hashref->{$key} = $value;
3766: }
3767: if ($mode ne 'notime') {
3768: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
3769: }
1.383 raeburn 3770: }
3771: if (&untie_domain_hash($hashref)) {
3772: &Reply($client, "ok\n", $userinput);
3773: } else {
3774: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3775: "while attempting courseidputhash\n", $userinput);
3776: }
3777: } else {
3778: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3779: "while attempting courseidputhash\n", $userinput);
3780: }
3781: return 1;
3782: }
3783: ®ister_handler("courseidputhash", \&put_course_id_hash_handler, 0, 1, 0);
3784:
1.234 foxr 3785: # Retrieves the value of a course id resource keyword pattern
3786: # defined since a starting date. Both the starting date and the
3787: # keyword pattern are optional. If the starting date is not supplied it
3788: # is treated as the beginning of time. If the pattern is not found,
3789: # it is treatred as "." matching everything.
3790: #
3791: # Parameters:
3792: # $cmd - Command keyword that resulted in us being dispatched.
3793: # $tail - The remainder of the command that, in this case, consists
3794: # of a colon separated list of:
3795: # domain - The domain in which the course database is
3796: # defined.
3797: # since - Optional parameter describing the minimum
3798: # time of definition(?) of the resources that
3799: # will match the dump.
3800: # description - regular expression that is used to filter
3801: # the dump. Only keywords matching this regexp
3802: # will be used.
1.272 raeburn 3803: # institutional code - optional supplied code to filter
3804: # the dump. Only courses with an institutional code
3805: # that match the supplied code will be returned.
1.336 raeburn 3806: # owner - optional supplied username and domain of owner to
3807: # filter the dump. Only courses for which the course
3808: # owner matches the supplied username and/or domain
3809: # will be returned. Pre-2.2.0 legacy entries from
3810: # nohist_courseiddump will only contain usernames.
1.384 raeburn 3811: # type - optional parameter for selection
1.418 raeburn 3812: # regexp_ok - if 1 or -1 allow the supplied institutional code
3813: # filter to behave as a regular expression:
3814: # 1 will not exclude the course if the instcode matches the RE
3815: # -1 will exclude the course if the instcode matches the RE
1.384 raeburn 3816: # rtn_as_hash - whether to return the information available for
3817: # each matched item as a frozen hash of all
3818: # key, value pairs in the item's hash, or as a
3819: # colon-separated list of (in order) description,
3820: # institutional code, and course owner.
1.404 raeburn 3821: # selfenrollonly - filter by courses allowing self-enrollment
3822: # now or in the future (selfenrollonly = 1).
3823: # catfilter - filter by course category, assigned to a course
3824: # using manually defined categories (i.e., not
1.407 raeburn 3825: # self-cataloging based on on institutional code).
1.404 raeburn 3826: # showhidden - include course in results even if course
1.407 raeburn 3827: # was set to be excluded from course catalog (DC only).
1.404 raeburn 3828: # caller - if set to 'coursecatalog', courses set to be hidden
3829: # from course catalog will be excluded from results (unless
3830: # overridden by "showhidden".
1.427 raeburn 3831: # cloner - escaped username:domain of course cloner (if picking course to
1.419 raeburn 3832: # clone).
3833: # cc_clone_list - escaped comma separated list of courses for which
3834: # course cloner has active CC role (and so can clone
3835: # automatically).
1.427 raeburn 3836: # cloneonly - filter by courses for which cloner has rights to clone.
3837: # createdbefore - include courses for which creation date preceeded this date.
3838: # createdafter - include courses for which creation date followed this date.
3839: # creationcontext - include courses created in specified context
1.404 raeburn 3840: #
1.445 raeburn 3841: # domcloner - flag to indicate if user can create CCs in course's domain.
3842: # If so, ability to clone course is automatic.
3843: #
1.234 foxr 3844: # $client - The socket open on the client.
3845: # Returns:
3846: # 1 - Continue processing.
3847: # Side Effects:
3848: # a reply is written to $client.
3849: sub dump_course_id_handler {
3850: my ($cmd, $tail, $client) = @_;
3851: my $userinput = "$cmd:$tail";
3852:
1.333 raeburn 3853: my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter,
1.404 raeburn 3854: $typefilter,$regexp_ok,$rtn_as_hash,$selfenrollonly,$catfilter,$showhidden,
1.427 raeburn 3855: $caller,$cloner,$cc_clone_list,$cloneonly,$createdbefore,$createdafter,
1.445 raeburn 3856: $creationcontext,$domcloner) =split(/:/,$tail);
1.397 raeburn 3857: my $now = time;
1.419 raeburn 3858: my ($cloneruname,$clonerudom,%cc_clone);
1.234 foxr 3859: if (defined($description)) {
3860: $description=&unescape($description);
3861: } else {
3862: $description='.';
3863: }
1.266 raeburn 3864: if (defined($instcodefilter)) {
3865: $instcodefilter=&unescape($instcodefilter);
3866: } else {
3867: $instcodefilter='.';
3868: }
1.336 raeburn 3869: my ($ownerunamefilter,$ownerdomfilter);
1.266 raeburn 3870: if (defined($ownerfilter)) {
3871: $ownerfilter=&unescape($ownerfilter);
1.336 raeburn 3872: if ($ownerfilter ne '.' && defined($ownerfilter)) {
3873: if ($ownerfilter =~ /^([^:]*):([^:]*)$/) {
3874: $ownerunamefilter = $1;
3875: $ownerdomfilter = $2;
3876: } else {
3877: $ownerunamefilter = $ownerfilter;
3878: $ownerdomfilter = '';
3879: }
3880: }
1.266 raeburn 3881: } else {
3882: $ownerfilter='.';
3883: }
1.336 raeburn 3884:
1.282 raeburn 3885: if (defined($coursefilter)) {
3886: $coursefilter=&unescape($coursefilter);
3887: } else {
3888: $coursefilter='.';
3889: }
1.333 raeburn 3890: if (defined($typefilter)) {
3891: $typefilter=&unescape($typefilter);
3892: } else {
3893: $typefilter='.';
3894: }
1.344 raeburn 3895: if (defined($regexp_ok)) {
3896: $regexp_ok=&unescape($regexp_ok);
3897: }
1.401 raeburn 3898: if (defined($catfilter)) {
3899: $catfilter=&unescape($catfilter);
3900: }
1.419 raeburn 3901: if (defined($cloner)) {
3902: $cloner = &unescape($cloner);
3903: ($cloneruname,$clonerudom) = ($cloner =~ /^($LONCAPA::match_username):($LONCAPA::match_domain)$/);
3904: }
3905: if (defined($cc_clone_list)) {
3906: $cc_clone_list = &unescape($cc_clone_list);
3907: my @cc_cloners = split('&',$cc_clone_list);
3908: foreach my $cid (@cc_cloners) {
3909: my ($clonedom,$clonenum) = split(':',$cid);
3910: next if ($clonedom ne $udom);
3911: $cc_clone{$clonedom.'_'.$clonenum} = 1;
3912: }
3913: }
1.431 raeburn 3914: if ($createdbefore ne '') {
1.427 raeburn 3915: $createdbefore = &unescape($createdbefore);
3916: } else {
3917: $createdbefore = 0;
3918: }
1.431 raeburn 3919: if ($createdafter ne '') {
1.427 raeburn 3920: $createdafter = &unescape($createdafter);
3921: } else {
3922: $createdafter = 0;
3923: }
1.431 raeburn 3924: if ($creationcontext ne '') {
1.427 raeburn 3925: $creationcontext = &unescape($creationcontext);
3926: } else {
3927: $creationcontext = '.';
3928: }
1.384 raeburn 3929: my $unpack = 1;
1.467.2.6! raeburn 3930: if ($description eq '.' && $instcodefilter eq '.' && $ownerfilter eq '.' &&
1.384 raeburn 3931: $typefilter eq '.') {
3932: $unpack = 0;
3933: }
3934: if (!defined($since)) { $since=0; }
1.234 foxr 3935: my $qresult='';
3936: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
3937: if ($hashref) {
1.384 raeburn 3938: while (my ($key,$value) = each(%$hashref)) {
1.397 raeburn 3939: my ($unesc_key,$lasttime_key,$lasttime,$is_hash,%val,
1.427 raeburn 3940: %unesc_val,$selfenroll_end,$selfenroll_types,$created,
3941: $context);
1.384 raeburn 3942: $unesc_key = &unescape($key);
3943: if ($unesc_key =~ /^lasttime:/) {
3944: next;
3945: } else {
3946: $lasttime_key = &escape('lasttime:'.$unesc_key);
3947: }
3948: if ($hashref->{$lasttime_key} ne '') {
3949: $lasttime = $hashref->{$lasttime_key};
3950: next if ($lasttime<$since);
3951: }
1.419 raeburn 3952: my ($canclone,$valchange);
1.384 raeburn 3953: my $items = &Apache::lonnet::thaw_unescape($value);
3954: if (ref($items) eq 'HASH') {
1.429 raeburn 3955: if ($hashref->{$lasttime_key} eq '') {
1.430 raeburn 3956: next if ($since > 1);
1.429 raeburn 3957: }
1.384 raeburn 3958: $is_hash = 1;
1.445 raeburn 3959: if ($domcloner) {
3960: $canclone = 1;
3961: } elsif (defined($clonerudom)) {
1.419 raeburn 3962: if ($items->{'cloners'}) {
3963: my @cloneable = split(',',$items->{'cloners'});
3964: if (@cloneable) {
3965: if (grep(/^\*$/,@cloneable)) {
3966: $canclone = 1;
3967: } elsif (grep(/^\*:\Q$clonerudom\E$/,@cloneable)) {
3968: $canclone = 1;
3969: } elsif (grep(/^\Q$cloneruname\E:\Q$clonerudom\E$/,@cloneable)) {
3970: $canclone = 1;
3971: }
3972: }
3973: unless ($canclone) {
3974: if ($cloneruname ne '' && $clonerudom ne '') {
3975: if ($cc_clone{$unesc_key}) {
3976: $canclone = 1;
3977: $items->{'cloners'} .= ','.$cloneruname.':'.
3978: $clonerudom;
3979: $valchange = 1;
3980: }
3981: }
3982: }
3983: } elsif (defined($cloneruname)) {
3984: if ($cc_clone{$unesc_key}) {
3985: $canclone = 1;
3986: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
3987: $valchange = 1;
3988: }
1.437 raeburn 3989: unless ($canclone) {
3990: if ($items->{'owner'} =~ /:/) {
3991: if ($items->{'owner'} eq $cloner) {
3992: $canclone = 1;
3993: }
1.444 raeburn 3994: } elsif ($cloner eq $items->{'owner'}.':'.$udom) {
1.437 raeburn 3995: $canclone = 1;
3996: }
3997: if ($canclone) {
3998: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
3999: $valchange = 1;
4000: }
4001: }
1.419 raeburn 4002: }
4003: }
1.384 raeburn 4004: if ($unpack || !$rtn_as_hash) {
4005: $unesc_val{'descr'} = $items->{'description'};
4006: $unesc_val{'inst_code'} = $items->{'inst_code'};
4007: $unesc_val{'owner'} = $items->{'owner'};
4008: $unesc_val{'type'} = $items->{'type'};
1.419 raeburn 4009: $unesc_val{'cloners'} = $items->{'cloners'};
1.427 raeburn 4010: $unesc_val{'created'} = $items->{'created'};
4011: $unesc_val{'context'} = $items->{'context'};
1.404 raeburn 4012: }
4013: $selfenroll_types = $items->{'selfenroll_types'};
4014: $selfenroll_end = $items->{'selfenroll_end_date'};
1.427 raeburn 4015: $created = $items->{'created'};
4016: $context = $items->{'context'};
1.404 raeburn 4017: if ($selfenrollonly) {
4018: next if (!$selfenroll_types);
4019: if (($selfenroll_end > 0) && ($selfenroll_end <= $now)) {
4020: next;
1.397 raeburn 4021: }
1.404 raeburn 4022: }
1.427 raeburn 4023: if ($creationcontext ne '.') {
4024: next if (($context ne '') && ($context ne $creationcontext));
4025: }
4026: if ($createdbefore > 0) {
4027: next if (($created eq '') || ($created > $createdbefore));
4028: }
4029: if ($createdafter > 0) {
4030: next if (($created eq '') || ($created <= $createdafter));
4031: }
1.404 raeburn 4032: if ($catfilter ne '') {
1.406 raeburn 4033: next if ($items->{'categories'} eq '');
4034: my @categories = split('&',$items->{'categories'});
1.407 raeburn 4035: next if (@categories == 0);
4036: my @subcats = split('&',$catfilter);
4037: my $matchcat = 0;
4038: foreach my $cat (@categories) {
4039: if (grep(/^\Q$cat\E$/,@subcats)) {
4040: $matchcat = 1;
4041: last;
4042: }
4043: }
4044: next if (!$matchcat);
1.404 raeburn 4045: }
4046: if ($caller eq 'coursecatalog') {
1.405 raeburn 4047: if ($items->{'hidefromcat'} eq 'yes') {
4048: next if !$showhidden;
1.401 raeburn 4049: }
1.384 raeburn 4050: }
1.383 raeburn 4051: } else {
1.401 raeburn 4052: next if ($catfilter ne '');
1.419 raeburn 4053: next if ($selfenrollonly);
1.427 raeburn 4054: next if ($createdbefore || $createdafter);
4055: next if ($creationcontext ne '.');
1.419 raeburn 4056: if ((defined($clonerudom)) && (defined($cloneruname))) {
4057: if ($cc_clone{$unesc_key}) {
4058: $canclone = 1;
4059: $val{'cloners'} = &escape($cloneruname.':'.$clonerudom);
4060: }
4061: }
1.384 raeburn 4062: $is_hash = 0;
1.388 raeburn 4063: my @courseitems = split(/:/,$value);
1.403 raeburn 4064: $lasttime = pop(@courseitems);
1.402 raeburn 4065: if ($hashref->{$lasttime_key} eq '') {
4066: next if ($lasttime<$since);
4067: }
1.384 raeburn 4068: ($val{'descr'},$val{'inst_code'},$val{'owner'},$val{'type'}) = @courseitems;
1.383 raeburn 4069: }
1.419 raeburn 4070: if ($cloneonly) {
4071: next unless ($canclone);
4072: }
1.266 raeburn 4073: my $match = 1;
1.384 raeburn 4074: if ($description ne '.') {
4075: if (!$is_hash) {
4076: $unesc_val{'descr'} = &unescape($val{'descr'});
4077: }
4078: if (eval{$unesc_val{'descr'} !~ /\Q$description\E/i}) {
1.266 raeburn 4079: $match = 0;
1.384 raeburn 4080: }
1.266 raeburn 4081: }
1.384 raeburn 4082: if ($instcodefilter ne '.') {
4083: if (!$is_hash) {
4084: $unesc_val{'inst_code'} = &unescape($val{'inst_code'});
4085: }
1.418 raeburn 4086: if ($regexp_ok == 1) {
1.384 raeburn 4087: if (eval{$unesc_val{'inst_code'} !~ /$instcodefilter/}) {
1.344 raeburn 4088: $match = 0;
4089: }
1.418 raeburn 4090: } elsif ($regexp_ok == -1) {
4091: if (eval{$unesc_val{'inst_code'} =~ /$instcodefilter/}) {
4092: $match = 0;
4093: }
1.344 raeburn 4094: } else {
1.384 raeburn 4095: if (eval{$unesc_val{'inst_code'} !~ /\Q$instcodefilter\E/i}) {
1.344 raeburn 4096: $match = 0;
4097: }
1.266 raeburn 4098: }
1.234 foxr 4099: }
1.384 raeburn 4100: if ($ownerfilter ne '.') {
4101: if (!$is_hash) {
4102: $unesc_val{'owner'} = &unescape($val{'owner'});
4103: }
1.336 raeburn 4104: if (($ownerunamefilter ne '') && ($ownerdomfilter ne '')) {
1.384 raeburn 4105: if ($unesc_val{'owner'} =~ /:/) {
4106: if (eval{$unesc_val{'owner'} !~
4107: /\Q$ownerunamefilter\E:\Q$ownerdomfilter\E$/i}) {
1.336 raeburn 4108: $match = 0;
4109: }
4110: } else {
1.384 raeburn 4111: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4112: $match = 0;
4113: }
4114: }
4115: } elsif ($ownerunamefilter ne '') {
1.384 raeburn 4116: if ($unesc_val{'owner'} =~ /:/) {
4117: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E:[^:]+$/i}) {
1.336 raeburn 4118: $match = 0;
4119: }
4120: } else {
1.384 raeburn 4121: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4122: $match = 0;
4123: }
4124: }
4125: } elsif ($ownerdomfilter ne '') {
1.384 raeburn 4126: if ($unesc_val{'owner'} =~ /:/) {
4127: if (eval{$unesc_val{'owner'} !~ /^[^:]+:\Q$ownerdomfilter\E/}) {
1.336 raeburn 4128: $match = 0;
4129: }
4130: } else {
4131: if ($ownerdomfilter ne $udom) {
4132: $match = 0;
4133: }
4134: }
1.266 raeburn 4135: }
4136: }
1.384 raeburn 4137: if ($coursefilter ne '.') {
4138: if (eval{$unesc_key !~ /^$udom(_)\Q$coursefilter\E$/}) {
1.282 raeburn 4139: $match = 0;
4140: }
4141: }
1.384 raeburn 4142: if ($typefilter ne '.') {
4143: if (!$is_hash) {
4144: $unesc_val{'type'} = &unescape($val{'type'});
4145: }
4146: if ($unesc_val{'type'} eq '') {
1.333 raeburn 4147: if ($typefilter ne 'Course') {
4148: $match = 0;
4149: }
1.383 raeburn 4150: } else {
1.384 raeburn 4151: if (eval{$unesc_val{'type'} !~ /^\Q$typefilter\E$/}) {
1.333 raeburn 4152: $match = 0;
4153: }
4154: }
4155: }
1.266 raeburn 4156: if ($match == 1) {
1.384 raeburn 4157: if ($rtn_as_hash) {
4158: if ($is_hash) {
1.419 raeburn 4159: if ($valchange) {
4160: my $newvalue = &Apache::lonnet::freeze_escape($items);
4161: $qresult.=$key.'='.$newvalue.'&';
4162: } else {
4163: $qresult.=$key.'='.$value.'&';
4164: }
1.384 raeburn 4165: } else {
1.388 raeburn 4166: my %rtnhash = ( 'description' => &unescape($val{'descr'}),
4167: 'inst_code' => &unescape($val{'inst_code'}),
4168: 'owner' => &unescape($val{'owner'}),
4169: 'type' => &unescape($val{'type'}),
1.419 raeburn 4170: 'cloners' => &unescape($val{'cloners'}),
1.384 raeburn 4171: );
4172: my $items = &Apache::lonnet::freeze_escape(\%rtnhash);
4173: $qresult.=$key.'='.$items.'&';
4174: }
1.383 raeburn 4175: } else {
1.384 raeburn 4176: if ($is_hash) {
4177: $qresult .= $key.'='.&escape($unesc_val{'descr'}).':'.
4178: &escape($unesc_val{'inst_code'}).':'.
4179: &escape($unesc_val{'owner'}).'&';
4180: } else {
4181: $qresult .= $key.'='.$val{'descr'}.':'.$val{'inst_code'}.
4182: ':'.$val{'owner'}.'&';
4183: }
1.383 raeburn 4184: }
1.266 raeburn 4185: }
1.234 foxr 4186: }
1.311 albertel 4187: if (&untie_domain_hash($hashref)) {
1.234 foxr 4188: chop($qresult);
1.387 albertel 4189: &Reply($client, \$qresult, $userinput);
1.234 foxr 4190: } else {
4191: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4192: "while attempting courseiddump\n", $userinput);
4193: }
4194: } else {
4195: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4196: "while attempting courseiddump\n", $userinput);
4197: }
4198: return 1;
4199: }
4200: ®ister_handler("courseiddump", \&dump_course_id_handler, 0, 1, 0);
1.238 foxr 4201:
1.438 raeburn 4202: sub course_lastaccess_handler {
4203: my ($cmd, $tail, $client) = @_;
4204: my $userinput = "$cmd:$tail";
4205: my ($cdom,$cnum) = split(':',$tail);
4206: my (%lastaccess,$qresult);
4207: my $hashref = &tie_domain_hash($cdom, "nohist_courseids", &GDBM_WRCREAT());
4208: if ($hashref) {
4209: while (my ($key,$value) = each(%$hashref)) {
4210: my ($unesc_key,$lasttime);
4211: $unesc_key = &unescape($key);
4212: if ($cnum) {
4213: next unless ($unesc_key =~ /\Q$cdom\E_\Q$cnum\E$/);
4214: }
4215: if ($unesc_key =~ /^lasttime:($LONCAPA::match_domain\_$LONCAPA::match_courseid)/) {
4216: $lastaccess{$1} = $value;
4217: } else {
4218: my $items = &Apache::lonnet::thaw_unescape($value);
4219: if (ref($items) eq 'HASH') {
4220: unless ($lastaccess{$unesc_key}) {
4221: $lastaccess{$unesc_key} = '';
4222: }
4223: } else {
4224: my @courseitems = split(':',$value);
4225: $lastaccess{$unesc_key} = pop(@courseitems);
4226: }
4227: }
4228: }
4229: foreach my $cid (sort(keys(%lastaccess))) {
4230: $qresult.=&escape($cid).'='.$lastaccess{$cid}.'&';
4231: }
4232: if (&untie_domain_hash($hashref)) {
4233: if ($qresult) {
4234: chop($qresult);
4235: }
4236: &Reply($client, \$qresult, $userinput);
4237: } else {
4238: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4239: "while attempting lastacourseaccess\n", $userinput);
4240: }
4241: } else {
4242: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4243: "while attempting lastcourseaccess\n", $userinput);
4244: }
4245: return 1;
4246: }
4247: ®ister_handler("courselastaccess",\&course_lastaccess_handler, 0, 1, 0);
4248:
1.238 foxr 4249: #
1.348 raeburn 4250: # Puts an unencrypted entry in a namespace db file at the domain level
4251: #
4252: # Parameters:
4253: # $cmd - The command that got us here.
4254: # $tail - Tail of the command (remaining parameters).
4255: # $client - File descriptor connected to client.
4256: # Returns
4257: # 0 - Requested to exit, caller should shut down.
4258: # 1 - Continue processing.
4259: # Side effects:
4260: # reply is written to $client.
4261: #
4262: sub put_domain_handler {
4263: my ($cmd,$tail,$client) = @_;
4264:
4265: my $userinput = "$cmd:$tail";
4266:
4267: my ($udom,$namespace,$what) =split(/:/,$tail,3);
4268: chomp($what);
4269: my @pairs=split(/\&/,$what);
4270: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_WRCREAT(),
4271: "P", $what);
4272: if ($hashref) {
4273: foreach my $pair (@pairs) {
4274: my ($key,$value)=split(/=/,$pair);
4275: $hashref->{$key}=$value;
4276: }
4277: if (&untie_domain_hash($hashref)) {
4278: &Reply($client, "ok\n", $userinput);
4279: } else {
4280: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4281: "while attempting putdom\n", $userinput);
4282: }
4283: } else {
4284: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4285: "while attempting putdom\n", $userinput);
4286: }
4287:
4288: return 1;
4289: }
4290: ®ister_handler("putdom", \&put_domain_handler, 0, 1, 0);
4291:
4292: # Unencrypted get from the namespace database file at the domain level.
4293: # This function retrieves a keyed item from a specific named database in the
4294: # domain directory.
4295: #
4296: # Parameters:
4297: # $cmd - Command request keyword (get).
4298: # $tail - Tail of the command. This is a colon separated list
4299: # consisting of the domain and the 'namespace'
4300: # which selects the gdbm file to do the lookup in,
4301: # & separated list of keys to lookup. Note that
4302: # the values are returned as an & separated list too.
4303: # $client - File descriptor open on the client.
4304: # Returns:
4305: # 1 - Continue processing.
4306: # 0 - Exit.
4307: # Side effects:
4308: # reply is written to $client.
4309: #
4310:
4311: sub get_domain_handler {
4312: my ($cmd, $tail, $client) = @_;
4313:
1.461 foxr 4314:
1.348 raeburn 4315: my $userinput = "$client:$tail";
4316:
4317: my ($udom,$namespace,$what)=split(/:/,$tail,3);
4318: chomp($what);
4319: my @queries=split(/\&/,$what);
4320: my $qresult='';
4321: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_READER());
4322: if ($hashref) {
4323: for (my $i=0;$i<=$#queries;$i++) {
4324: $qresult.="$hashref->{$queries[$i]}&";
4325: }
4326: if (&untie_domain_hash($hashref)) {
4327: $qresult=~s/\&$//;
1.387 albertel 4328: &Reply($client, \$qresult, $userinput);
1.348 raeburn 4329: } else {
4330: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
4331: "while attempting getdom\n",$userinput);
4332: }
4333: } else {
4334: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4335: "while attempting getdom\n",$userinput);
4336: }
4337:
4338: return 1;
4339: }
1.360 raeburn 4340: ®ister_handler("getdom", \&get_domain_handler, 0, 1, 0);
1.348 raeburn 4341:
1.420 raeburn 4342: #
1.238 foxr 4343: # Puts an id to a domains id database.
4344: #
4345: # Parameters:
4346: # $cmd - The command that triggered us.
4347: # $tail - Remainder of the request other than the command. This is a
4348: # colon separated list containing:
4349: # $domain - The domain for which we are writing the id.
4350: # $pairs - The id info to write... this is and & separated list
4351: # of keyword=value.
4352: # $client - Socket open on the client.
4353: # Returns:
4354: # 1 - Continue processing.
4355: # Side effects:
4356: # reply is written to $client.
4357: #
4358: sub put_id_handler {
4359: my ($cmd,$tail,$client) = @_;
4360:
4361:
4362: my $userinput = "$cmd:$tail";
4363:
4364: my ($udom,$what)=split(/:/,$tail);
4365: chomp($what);
4366: my @pairs=split(/\&/,$what);
4367: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
4368: "P", $what);
4369: if ($hashref) {
4370: foreach my $pair (@pairs) {
4371: my ($key,$value)=split(/=/,$pair);
4372: $hashref->{$key}=$value;
4373: }
1.311 albertel 4374: if (&untie_domain_hash($hashref)) {
1.238 foxr 4375: &Reply($client, "ok\n", $userinput);
4376: } else {
4377: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4378: "while attempting idput\n", $userinput);
4379: }
4380: } else {
4381: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4382: "while attempting idput\n", $userinput);
4383: }
4384:
4385: return 1;
4386: }
1.263 albertel 4387: ®ister_handler("idput", \&put_id_handler, 0, 1, 0);
1.238 foxr 4388:
4389: #
4390: # Retrieves a set of id values from the id database.
4391: # Returns an & separated list of results, one for each requested id to the
4392: # client.
4393: #
4394: # Parameters:
4395: # $cmd - Command keyword that caused us to be dispatched.
4396: # $tail - Tail of the command. Consists of a colon separated:
4397: # domain - the domain whose id table we dump
4398: # ids Consists of an & separated list of
4399: # id keywords whose values will be fetched.
4400: # nonexisting keywords will have an empty value.
4401: # $client - Socket open on the client.
4402: #
4403: # Returns:
4404: # 1 - indicating processing should continue.
4405: # Side effects:
4406: # An & separated list of results is written to $client.
4407: #
4408: sub get_id_handler {
4409: my ($cmd, $tail, $client) = @_;
4410:
4411:
4412: my $userinput = "$client:$tail";
4413:
4414: my ($udom,$what)=split(/:/,$tail);
4415: chomp($what);
4416: my @queries=split(/\&/,$what);
4417: my $qresult='';
4418: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_READER());
4419: if ($hashref) {
4420: for (my $i=0;$i<=$#queries;$i++) {
4421: $qresult.="$hashref->{$queries[$i]}&";
4422: }
1.311 albertel 4423: if (&untie_domain_hash($hashref)) {
1.238 foxr 4424: $qresult=~s/\&$//;
1.387 albertel 4425: &Reply($client, \$qresult, $userinput);
1.238 foxr 4426: } else {
4427: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
4428: "while attempting idget\n",$userinput);
4429: }
4430: } else {
4431: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4432: "while attempting idget\n",$userinput);
4433: }
4434:
4435: return 1;
4436: }
1.263 albertel 4437: ®ister_handler("idget", \&get_id_handler, 0, 1, 0);
1.238 foxr 4438:
4439: #
1.299 raeburn 4440: # Puts broadcast e-mail sent by Domain Coordinator in nohist_dcmail database
4441: #
4442: # Parameters
4443: # $cmd - Command keyword that caused us to be dispatched.
4444: # $tail - Tail of the command. Consists of a colon separated:
4445: # domain - the domain whose dcmail we are recording
4446: # email Consists of key=value pair
4447: # where key is unique msgid
4448: # and value is message (in XML)
4449: # $client - Socket open on the client.
4450: #
4451: # Returns:
4452: # 1 - indicating processing should continue.
4453: # Side effects
4454: # reply is written to $client.
4455: #
4456: sub put_dcmail_handler {
4457: my ($cmd,$tail,$client) = @_;
4458: my $userinput = "$cmd:$tail";
1.463 foxr 4459:
4460:
1.299 raeburn 4461: my ($udom,$what)=split(/:/,$tail);
4462: chomp($what);
4463: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
4464: if ($hashref) {
4465: my ($key,$value)=split(/=/,$what);
4466: $hashref->{$key}=$value;
4467: }
1.311 albertel 4468: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4469: &Reply($client, "ok\n", $userinput);
4470: } else {
4471: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4472: "while attempting dcmailput\n", $userinput);
4473: }
4474: return 1;
4475: }
4476: ®ister_handler("dcmailput", \&put_dcmail_handler, 0, 1, 0);
4477:
4478: #
4479: # Retrieves broadcast e-mail from nohist_dcmail database
4480: # Returns to client an & separated list of key=value pairs,
4481: # where key is msgid and value is message information.
4482: #
4483: # Parameters
4484: # $cmd - Command keyword that caused us to be dispatched.
4485: # $tail - Tail of the command. Consists of a colon separated:
4486: # domain - the domain whose dcmail table we dump
4487: # startfilter - beginning of time window
4488: # endfilter - end of time window
4489: # sendersfilter - & separated list of username:domain
4490: # for senders to search for.
4491: # $client - Socket open on the client.
4492: #
4493: # Returns:
4494: # 1 - indicating processing should continue.
4495: # Side effects
4496: # reply (& separated list of msgid=messageinfo pairs) is
4497: # written to $client.
4498: #
4499: sub dump_dcmail_handler {
4500: my ($cmd, $tail, $client) = @_;
4501:
4502: my $userinput = "$cmd:$tail";
4503: my ($udom,$startfilter,$endfilter,$sendersfilter) = split(/:/,$tail);
4504: chomp($sendersfilter);
4505: my @senders = ();
4506: if (defined($startfilter)) {
4507: $startfilter=&unescape($startfilter);
4508: } else {
4509: $startfilter='.';
4510: }
4511: if (defined($endfilter)) {
4512: $endfilter=&unescape($endfilter);
4513: } else {
4514: $endfilter='.';
4515: }
4516: if (defined($sendersfilter)) {
4517: $sendersfilter=&unescape($sendersfilter);
1.300 albertel 4518: @senders = map { &unescape($_) } split(/\&/,$sendersfilter);
1.299 raeburn 4519: }
4520:
4521: my $qresult='';
4522: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
4523: if ($hashref) {
4524: while (my ($key,$value) = each(%$hashref)) {
4525: my $match = 1;
1.303 albertel 4526: my ($timestamp,$subj,$uname,$udom) =
4527: split(/:/,&unescape(&unescape($key)),5); # yes, twice really
1.299 raeburn 4528: $subj = &unescape($subj);
4529: unless ($startfilter eq '.' || !defined($startfilter)) {
4530: if ($timestamp < $startfilter) {
4531: $match = 0;
4532: }
4533: }
4534: unless ($endfilter eq '.' || !defined($endfilter)) {
4535: if ($timestamp > $endfilter) {
4536: $match = 0;
4537: }
4538: }
4539: unless (@senders < 1) {
4540: unless (grep/^$uname:$udom$/,@senders) {
4541: $match = 0;
4542: }
4543: }
4544: if ($match == 1) {
4545: $qresult.=$key.'='.$value.'&';
4546: }
4547: }
1.311 albertel 4548: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4549: chop($qresult);
1.387 albertel 4550: &Reply($client, \$qresult, $userinput);
1.299 raeburn 4551: } else {
4552: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4553: "while attempting dcmaildump\n", $userinput);
4554: }
4555: } else {
4556: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4557: "while attempting dcmaildump\n", $userinput);
4558: }
4559: return 1;
4560: }
4561:
4562: ®ister_handler("dcmaildump", \&dump_dcmail_handler, 0, 1, 0);
4563:
4564: #
4565: # Puts domain roles in nohist_domainroles database
4566: #
4567: # Parameters
4568: # $cmd - Command keyword that caused us to be dispatched.
4569: # $tail - Tail of the command. Consists of a colon separated:
4570: # domain - the domain whose roles we are recording
4571: # role - Consists of key=value pair
4572: # where key is unique role
4573: # and value is start/end date information
4574: # $client - Socket open on the client.
4575: #
4576: # Returns:
4577: # 1 - indicating processing should continue.
4578: # Side effects
4579: # reply is written to $client.
4580: #
4581:
4582: sub put_domainroles_handler {
4583: my ($cmd,$tail,$client) = @_;
4584:
4585: my $userinput = "$cmd:$tail";
4586: my ($udom,$what)=split(/:/,$tail);
4587: chomp($what);
4588: my @pairs=split(/\&/,$what);
4589: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
4590: if ($hashref) {
4591: foreach my $pair (@pairs) {
4592: my ($key,$value)=split(/=/,$pair);
4593: $hashref->{$key}=$value;
4594: }
1.311 albertel 4595: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4596: &Reply($client, "ok\n", $userinput);
4597: } else {
4598: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4599: "while attempting domroleput\n", $userinput);
4600: }
4601: } else {
4602: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4603: "while attempting domroleput\n", $userinput);
4604: }
4605:
4606: return 1;
4607: }
4608:
4609: ®ister_handler("domroleput", \&put_domainroles_handler, 0, 1, 0);
4610:
4611: #
4612: # Retrieves domain roles from nohist_domainroles database
4613: # Returns to client an & separated list of key=value pairs,
4614: # where key is role and value is start and end date information.
4615: #
4616: # Parameters
4617: # $cmd - Command keyword that caused us to be dispatched.
4618: # $tail - Tail of the command. Consists of a colon separated:
4619: # domain - the domain whose domain roles table we dump
4620: # $client - Socket open on the client.
4621: #
4622: # Returns:
4623: # 1 - indicating processing should continue.
4624: # Side effects
4625: # reply (& separated list of role=start/end info pairs) is
4626: # written to $client.
4627: #
4628: sub dump_domainroles_handler {
4629: my ($cmd, $tail, $client) = @_;
4630:
4631: my $userinput = "$cmd:$tail";
4632: my ($udom,$startfilter,$endfilter,$rolesfilter) = split(/:/,$tail);
4633: chomp($rolesfilter);
4634: my @roles = ();
4635: if (defined($startfilter)) {
4636: $startfilter=&unescape($startfilter);
4637: } else {
4638: $startfilter='.';
4639: }
4640: if (defined($endfilter)) {
4641: $endfilter=&unescape($endfilter);
4642: } else {
4643: $endfilter='.';
4644: }
4645: if (defined($rolesfilter)) {
4646: $rolesfilter=&unescape($rolesfilter);
1.300 albertel 4647: @roles = split(/\&/,$rolesfilter);
1.299 raeburn 4648: }
1.421 raeburn 4649:
1.299 raeburn 4650: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
4651: if ($hashref) {
4652: my $qresult = '';
4653: while (my ($key,$value) = each(%$hashref)) {
4654: my $match = 1;
1.421 raeburn 4655: my ($end,$start) = split(/:/,&unescape($value));
1.299 raeburn 4656: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,&unescape($key));
1.421 raeburn 4657: unless (@roles < 1) {
4658: unless (grep/^\Q$trole\E$/,@roles) {
4659: $match = 0;
4660: next;
4661: }
4662: }
1.299 raeburn 4663: unless ($startfilter eq '.' || !defined($startfilter)) {
1.415 raeburn 4664: if ((defined($start)) && ($start >= $startfilter)) {
1.299 raeburn 4665: $match = 0;
1.421 raeburn 4666: next;
1.299 raeburn 4667: }
4668: }
4669: unless ($endfilter eq '.' || !defined($endfilter)) {
1.421 raeburn 4670: if ((defined($end)) && (($end > 0) && ($end <= $endfilter))) {
1.299 raeburn 4671: $match = 0;
1.421 raeburn 4672: next;
1.299 raeburn 4673: }
4674: }
4675: if ($match == 1) {
4676: $qresult.=$key.'='.$value.'&';
4677: }
4678: }
1.311 albertel 4679: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4680: chop($qresult);
1.387 albertel 4681: &Reply($client, \$qresult, $userinput);
1.299 raeburn 4682: } else {
4683: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4684: "while attempting domrolesdump\n", $userinput);
4685: }
4686: } else {
4687: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4688: "while attempting domrolesdump\n", $userinput);
4689: }
4690: return 1;
4691: }
4692:
4693: ®ister_handler("domrolesdump", \&dump_domainroles_handler, 0, 1, 0);
4694:
4695:
1.238 foxr 4696: # Process the tmpput command I'm not sure what this does.. Seems to
4697: # create a file in the lonDaemons/tmp directory of the form $id.tmp
4698: # where Id is the client's ip concatenated with a sequence number.
4699: # The file will contain some value that is passed in. Is this e.g.
4700: # a login token?
4701: #
4702: # Parameters:
4703: # $cmd - The command that got us dispatched.
4704: # $tail - The remainder of the request following $cmd:
4705: # In this case this will be the contents of the file.
4706: # $client - Socket connected to the client.
4707: # Returns:
4708: # 1 indicating processing can continue.
4709: # Side effects:
4710: # A file is created in the local filesystem.
4711: # A reply is sent to the client.
4712: sub tmp_put_handler {
4713: my ($cmd, $what, $client) = @_;
4714:
4715: my $userinput = "$cmd:$what"; # Reconstruct for logging.
4716:
1.347 raeburn 4717: my ($record,$context) = split(/:/,$what);
4718: if ($context ne '') {
4719: chomp($context);
4720: $context = &unescape($context);
4721: }
4722: my ($id,$store);
1.238 foxr 4723: $tmpsnum++;
1.454 raeburn 4724: if (($context eq 'resetpw') || ($context eq 'createaccount')) {
1.347 raeburn 4725: $id = &md5_hex(&md5_hex(time.{}.rand().$$));
4726: } else {
4727: $id = $$.'_'.$clientip.'_'.$tmpsnum;
4728: }
1.238 foxr 4729: $id=~s/\W/\_/g;
1.347 raeburn 4730: $record=~s/\n//g;
1.238 foxr 4731: my $execdir=$perlvar{'lonDaemons'};
4732: if ($store=IO::File->new(">$execdir/tmp/$id.tmp")) {
1.347 raeburn 4733: print $store $record;
1.238 foxr 4734: close $store;
1.387 albertel 4735: &Reply($client, \$id, $userinput);
1.238 foxr 4736: } else {
4737: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
4738: "while attempting tmpput\n", $userinput);
4739: }
4740: return 1;
4741:
4742: }
4743: ®ister_handler("tmpput", \&tmp_put_handler, 0, 1, 0);
1.263 albertel 4744:
1.238 foxr 4745: # Processes the tmpget command. This command returns the contents
4746: # of a temporary resource file(?) created via tmpput.
4747: #
4748: # Paramters:
4749: # $cmd - Command that got us dispatched.
4750: # $id - Tail of the command, contain the id of the resource
4751: # we want to fetch.
4752: # $client - socket open on the client.
4753: # Return:
4754: # 1 - Inidcating processing can continue.
4755: # Side effects:
4756: # A reply is sent to the client.
4757: #
4758: sub tmp_get_handler {
4759: my ($cmd, $id, $client) = @_;
4760:
4761: my $userinput = "$cmd:$id";
4762:
4763:
4764: $id=~s/\W/\_/g;
4765: my $store;
4766: my $execdir=$perlvar{'lonDaemons'};
4767: if ($store=IO::File->new("$execdir/tmp/$id.tmp")) {
4768: my $reply=<$store>;
1.387 albertel 4769: &Reply( $client, \$reply, $userinput);
1.238 foxr 4770: close $store;
4771: } else {
4772: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
4773: "while attempting tmpget\n", $userinput);
4774: }
4775:
4776: return 1;
4777: }
4778: ®ister_handler("tmpget", \&tmp_get_handler, 0, 1, 0);
1.263 albertel 4779:
1.238 foxr 4780: #
4781: # Process the tmpdel command. This command deletes a temp resource
4782: # created by the tmpput command.
4783: #
4784: # Parameters:
4785: # $cmd - Command that got us here.
4786: # $id - Id of the temporary resource created.
4787: # $client - socket open on the client process.
4788: #
4789: # Returns:
4790: # 1 - Indicating processing should continue.
4791: # Side Effects:
4792: # A file is deleted
4793: # A reply is sent to the client.
4794: sub tmp_del_handler {
4795: my ($cmd, $id, $client) = @_;
4796:
4797: my $userinput= "$cmd:$id";
4798:
4799: chomp($id);
4800: $id=~s/\W/\_/g;
4801: my $execdir=$perlvar{'lonDaemons'};
4802: if (unlink("$execdir/tmp/$id.tmp")) {
4803: &Reply($client, "ok\n", $userinput);
4804: } else {
4805: &Failure( $client, "error: ".($!+0)."Unlink tmp Failed ".
4806: "while attempting tmpdel\n", $userinput);
4807: }
4808:
4809: return 1;
4810:
4811: }
4812: ®ister_handler("tmpdel", \&tmp_del_handler, 0, 1, 0);
1.263 albertel 4813:
1.238 foxr 4814: #
1.246 foxr 4815: # Processes the setannounce command. This command
4816: # creates a file named announce.txt in the top directory of
4817: # the documentn root and sets its contents. The announce.txt file is
4818: # printed in its entirety at the LonCAPA login page. Note:
4819: # once the announcement.txt fileis created it cannot be deleted.
4820: # However, setting the contents of the file to empty removes the
4821: # announcement from the login page of loncapa so who cares.
4822: #
4823: # Parameters:
4824: # $cmd - The command that got us dispatched.
4825: # $announcement - The text of the announcement.
4826: # $client - Socket open on the client process.
4827: # Retunrns:
4828: # 1 - Indicating request processing should continue
4829: # Side Effects:
4830: # The file {DocRoot}/announcement.txt is created.
4831: # A reply is sent to $client.
4832: #
4833: sub set_announce_handler {
4834: my ($cmd, $announcement, $client) = @_;
4835:
4836: my $userinput = "$cmd:$announcement";
4837:
4838: chomp($announcement);
4839: $announcement=&unescape($announcement);
4840: if (my $store=IO::File->new('>'.$perlvar{'lonDocRoot'}.
4841: '/announcement.txt')) {
4842: print $store $announcement;
4843: close $store;
4844: &Reply($client, "ok\n", $userinput);
4845: } else {
4846: &Failure($client, "error: ".($!+0)."\n", $userinput);
4847: }
4848:
4849: return 1;
4850: }
4851: ®ister_handler("setannounce", \&set_announce_handler, 0, 1, 0);
1.263 albertel 4852:
1.246 foxr 4853: #
4854: # Return the version of the daemon. This can be used to determine
4855: # the compatibility of cross version installations or, alternatively to
4856: # simply know who's out of date and who isn't. Note that the version
4857: # is returned concatenated with the tail.
4858: # Parameters:
4859: # $cmd - the request that dispatched to us.
4860: # $tail - Tail of the request (client's version?).
4861: # $client - Socket open on the client.
4862: #Returns:
4863: # 1 - continue processing requests.
4864: # Side Effects:
4865: # Replies with version to $client.
4866: sub get_version_handler {
4867: my ($cmd, $tail, $client) = @_;
4868:
4869: my $userinput = $cmd.$tail;
4870:
4871: &Reply($client, &version($userinput)."\n", $userinput);
4872:
4873:
4874: return 1;
4875: }
4876: ®ister_handler("version", \&get_version_handler, 0, 1, 0);
1.263 albertel 4877:
1.246 foxr 4878: # Set the current host and domain. This is used to support
4879: # multihomed systems. Each IP of the system, or even separate daemons
4880: # on the same IP can be treated as handling a separate lonCAPA virtual
4881: # machine. This command selects the virtual lonCAPA. The client always
4882: # knows the right one since it is lonc and it is selecting the domain/system
4883: # from the hosts.tab file.
4884: # Parameters:
4885: # $cmd - Command that dispatched us.
4886: # $tail - Tail of the command (domain/host requested).
4887: # $socket - Socket open on the client.
4888: #
4889: # Returns:
4890: # 1 - Indicates the program should continue to process requests.
4891: # Side-effects:
4892: # The default domain/system context is modified for this daemon.
4893: # a reply is sent to the client.
4894: #
4895: sub set_virtual_host_handler {
4896: my ($cmd, $tail, $socket) = @_;
4897:
4898: my $userinput ="$cmd:$tail";
4899:
4900: &Reply($client, &sethost($userinput)."\n", $userinput);
4901:
4902:
4903: return 1;
4904: }
1.247 albertel 4905: ®ister_handler("sethost", \&set_virtual_host_handler, 0, 1, 0);
1.246 foxr 4906:
4907: # Process a request to exit:
4908: # - "bye" is sent to the client.
4909: # - The client socket is shutdown and closed.
4910: # - We indicate to the caller that we should exit.
4911: # Formal Parameters:
4912: # $cmd - The command that got us here.
4913: # $tail - Tail of the command (empty).
4914: # $client - Socket open on the tail.
4915: # Returns:
4916: # 0 - Indicating the program should exit!!
4917: #
4918: sub exit_handler {
4919: my ($cmd, $tail, $client) = @_;
4920:
4921: my $userinput = "$cmd:$tail";
4922:
4923: &logthis("Client $clientip ($clientname) hanging up: $userinput");
4924: &Reply($client, "bye\n", $userinput);
4925: $client->shutdown(2); # shutdown the socket forcibly.
4926: $client->close();
4927:
4928: return 0;
4929: }
1.248 foxr 4930: ®ister_handler("exit", \&exit_handler, 0,1,1);
4931: ®ister_handler("init", \&exit_handler, 0,1,1);
4932: ®ister_handler("quit", \&exit_handler, 0,1,1);
4933:
4934: # Determine if auto-enrollment is enabled.
4935: # Note that the original had what I believe to be a defect.
4936: # The original returned 0 if the requestor was not a registerd client.
4937: # It should return "refused".
4938: # Formal Parameters:
4939: # $cmd - The command that invoked us.
4940: # $tail - The tail of the command (Extra command parameters.
4941: # $client - The socket open on the client that issued the request.
4942: # Returns:
4943: # 1 - Indicating processing should continue.
4944: #
4945: sub enrollment_enabled_handler {
4946: my ($cmd, $tail, $client) = @_;
4947: my $userinput = $cmd.":".$tail; # For logging purposes.
4948:
4949:
1.337 albertel 4950: my ($cdom) = split(/:/, $tail, 2); # Domain we're asking about.
4951:
1.248 foxr 4952: my $outcome = &localenroll::run($cdom);
1.387 albertel 4953: &Reply($client, \$outcome, $userinput);
1.248 foxr 4954:
4955: return 1;
4956: }
4957: ®ister_handler("autorun", \&enrollment_enabled_handler, 0, 1, 0);
4958:
1.417 raeburn 4959: #
1.423 raeburn 4960: # Validate an institutional code used for a LON-CAPA course.
1.417 raeburn 4961: #
4962: # Formal Parameters:
4963: # $cmd - The command request that got us dispatched.
4964: # $tail - The tail of the command. In this case,
4965: # this is a colon separated set of words that will be split
4966: # into:
1.424 raeburn 4967: # $dom - The domain for which the check of
4968: # institutional course code will occur.
4969: #
4970: # $instcode - The institutional code for the course
4971: # being requested, or validated for rights
4972: # to request.
4973: #
4974: # $owner - The course requestor (who will be the
4975: # course owner, in the form username:domain
4976: #
1.417 raeburn 4977: # $client - Socket open on the client.
4978: # Returns:
4979: # 1 - Indicating processing should continue.
4980: #
4981: sub validate_instcode_handler {
4982: my ($cmd, $tail, $client) = @_;
4983: my $userinput = "$cmd:$tail";
1.423 raeburn 4984: my ($dom,$instcode,$owner) = split(/:/, $tail);
1.422 raeburn 4985: $instcode = &unescape($instcode);
4986: $owner = &unescape($owner);
1.426 raeburn 4987: my ($outcome,$description) =
4988: &localenroll::validate_instcode($dom,$instcode,$owner);
4989: my $result = &escape($outcome).'&'.&escape($description);
4990: &Reply($client, \$result, $userinput);
1.417 raeburn 4991:
4992: return 1;
4993: }
4994: ®ister_handler("autovalidateinstcode", \&validate_instcode_handler, 0, 1, 0);
4995:
1.248 foxr 4996: # Get the official sections for which auto-enrollment is possible.
4997: # Since the admin people won't know about 'unofficial sections'
4998: # we cannot auto-enroll on them.
4999: # Formal Parameters:
5000: # $cmd - The command request that got us dispatched here.
5001: # $tail - The remainder of the request. In our case this
5002: # will be split into:
5003: # $coursecode - The course name from the admin point of view.
5004: # $cdom - The course's domain(?).
5005: # $client - Socket open on the client.
5006: # Returns:
5007: # 1 - Indiciting processing should continue.
5008: #
5009: sub get_sections_handler {
5010: my ($cmd, $tail, $client) = @_;
5011: my $userinput = "$cmd:$tail";
5012:
5013: my ($coursecode, $cdom) = split(/:/, $tail);
5014: my @secs = &localenroll::get_sections($coursecode,$cdom);
5015: my $seclist = &escape(join(':',@secs));
5016:
1.387 albertel 5017: &Reply($client, \$seclist, $userinput);
1.248 foxr 5018:
5019:
5020: return 1;
5021: }
5022: ®ister_handler("autogetsections", \&get_sections_handler, 0, 1, 0);
5023:
5024: # Validate the owner of a new course section.
5025: #
5026: # Formal Parameters:
5027: # $cmd - Command that got us dispatched.
5028: # $tail - the remainder of the command. For us this consists of a
5029: # colon separated string containing:
5030: # $inst - Course Id from the institutions point of view.
5031: # $owner - Proposed owner of the course.
5032: # $cdom - Domain of the course (from the institutions
5033: # point of view?)..
5034: # $client - Socket open on the client.
5035: #
5036: # Returns:
5037: # 1 - Processing should continue.
5038: #
5039: sub validate_course_owner_handler {
5040: my ($cmd, $tail, $client) = @_;
5041: my $userinput = "$cmd:$tail";
1.467.2.1 raeburn 5042: my ($inst_course_id, $owner, $cdom, $coowners) = split(/:/, $tail);
1.248 foxr 5043:
1.336 raeburn 5044: $owner = &unescape($owner);
1.467.2.1 raeburn 5045: $coowners = &unescape($coowners);
5046: my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom,$coowners);
1.387 albertel 5047: &Reply($client, \$outcome, $userinput);
1.248 foxr 5048:
5049:
5050:
5051: return 1;
5052: }
5053: ®ister_handler("autonewcourse", \&validate_course_owner_handler, 0, 1, 0);
1.263 albertel 5054:
1.248 foxr 5055: #
5056: # Validate a course section in the official schedule of classes
5057: # from the institutions point of view (part of autoenrollment).
5058: #
5059: # Formal Parameters:
5060: # $cmd - The command request that got us dispatched.
5061: # $tail - The tail of the command. In this case,
5062: # this is a colon separated set of words that will be split
5063: # into:
5064: # $inst_course_id - The course/section id from the
5065: # institutions point of view.
5066: # $cdom - The domain from the institutions
5067: # point of view.
5068: # $client - Socket open on the client.
5069: # Returns:
5070: # 1 - Indicating processing should continue.
5071: #
5072: sub validate_course_section_handler {
5073: my ($cmd, $tail, $client) = @_;
5074: my $userinput = "$cmd:$tail";
5075: my ($inst_course_id, $cdom) = split(/:/, $tail);
5076:
5077: my $outcome=&localenroll::validate_courseID($inst_course_id,$cdom);
1.387 albertel 5078: &Reply($client, \$outcome, $userinput);
1.248 foxr 5079:
5080:
5081: return 1;
5082: }
5083: ®ister_handler("autovalidatecourse", \&validate_course_section_handler, 0, 1, 0);
5084:
5085: #
1.340 raeburn 5086: # Validate course owner's access to enrollment data for specific class section.
5087: #
5088: #
5089: # Formal Parameters:
5090: # $cmd - The command request that got us dispatched.
5091: # $tail - The tail of the command. In this case this is a colon separated
5092: # set of words that will be split into:
5093: # $inst_class - Institutional code for the specific class section
5094: # $courseowner - The escaped username:domain of the course owner
5095: # $cdom - The domain of the course from the institution's
5096: # point of view.
5097: # $client - The socket open on the client.
5098: # Returns:
5099: # 1 - continue processing.
5100: #
5101:
5102: sub validate_class_access_handler {
5103: my ($cmd, $tail, $client) = @_;
5104: my $userinput = "$cmd:$tail";
1.383 raeburn 5105: my ($inst_class,$ownerlist,$cdom) = split(/:/, $tail);
1.392 raeburn 5106: my $owners = &unescape($ownerlist);
1.341 albertel 5107: my $outcome;
5108: eval {
5109: local($SIG{__DIE__})='DEFAULT';
1.392 raeburn 5110: $outcome=&localenroll::check_section($inst_class,$owners,$cdom);
1.341 albertel 5111: };
1.387 albertel 5112: &Reply($client,\$outcome, $userinput);
1.340 raeburn 5113:
5114: return 1;
5115: }
5116: ®ister_handler("autovalidateclass_sec", \&validate_class_access_handler, 0, 1, 0);
5117:
5118: #
5119: # Create a password for a new LON-CAPA user added by auto-enrollment.
5120: # Only used for case where authentication method for new user is localauth
1.248 foxr 5121: #
5122: # Formal Parameters:
5123: # $cmd - The command request that got us dispatched.
5124: # $tail - The tail of the command. In this case this is a colon separated
5125: # set of words that will be split into:
1.340 raeburn 5126: # $authparam - An authentication parameter (localauth parameter).
1.248 foxr 5127: # $cdom - The domain of the course from the institution's
5128: # point of view.
5129: # $client - The socket open on the client.
5130: # Returns:
5131: # 1 - continue processing.
5132: #
5133: sub create_auto_enroll_password_handler {
5134: my ($cmd, $tail, $client) = @_;
5135: my $userinput = "$cmd:$tail";
5136:
5137: my ($authparam, $cdom) = split(/:/, $userinput);
5138:
5139: my ($create_passwd,$authchk);
5140: ($authparam,
5141: $create_passwd,
5142: $authchk) = &localenroll::create_password($authparam,$cdom);
5143:
5144: &Reply($client, &escape($authparam.':'.$create_passwd.':'.$authchk)."\n",
5145: $userinput);
5146:
5147:
5148: return 1;
5149: }
5150: ®ister_handler("autocreatepassword", \&create_auto_enroll_password_handler,
5151: 0, 1, 0);
5152:
5153: # Retrieve and remove temporary files created by/during autoenrollment.
5154: #
5155: # Formal Parameters:
5156: # $cmd - The command that got us dispatched.
5157: # $tail - The tail of the command. In our case this is a colon
5158: # separated list that will be split into:
5159: # $filename - The name of the file to remove.
5160: # The filename is given as a path relative to
5161: # the LonCAPA temp file directory.
5162: # $client - Socket open on the client.
5163: #
5164: # Returns:
5165: # 1 - Continue processing.
5166: sub retrieve_auto_file_handler {
5167: my ($cmd, $tail, $client) = @_;
5168: my $userinput = "cmd:$tail";
5169:
5170: my ($filename) = split(/:/, $tail);
5171:
5172: my $source = $perlvar{'lonDaemons'}.'/tmp/'.$filename;
5173: if ( (-e $source) && ($filename ne '') ) {
5174: my $reply = '';
5175: if (open(my $fh,$source)) {
5176: while (<$fh>) {
5177: chomp($_);
5178: $_ =~ s/^\s+//g;
5179: $_ =~ s/\s+$//g;
5180: $reply .= $_;
5181: }
5182: close($fh);
5183: &Reply($client, &escape($reply)."\n", $userinput);
5184:
5185: # Does this have to be uncommented??!? (RF).
5186: #
5187: # unlink($source);
5188: } else {
5189: &Failure($client, "error\n", $userinput);
5190: }
5191: } else {
5192: &Failure($client, "error\n", $userinput);
5193: }
5194:
5195:
5196: return 1;
5197: }
5198: ®ister_handler("autoretrieve", \&retrieve_auto_file_handler, 0,1,0);
5199:
1.423 raeburn 5200: sub crsreq_checks_handler {
5201: my ($cmd, $tail, $client) = @_;
5202: my $userinput = "$cmd:$tail";
5203: my $dom = $tail;
5204: my $result;
1.424 raeburn 5205: my @reqtypes = ('official','unofficial','community');
1.423 raeburn 5206: eval {
5207: local($SIG{__DIE__})='DEFAULT';
5208: my %validations;
1.424 raeburn 5209: my $response = &localenroll::crsreq_checks($dom,\@reqtypes,
5210: \%validations);
1.423 raeburn 5211: if ($response eq 'ok') {
5212: foreach my $key (keys(%validations)) {
5213: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
5214: }
5215: $result =~ s/\&$//;
5216: } else {
5217: $result = 'error';
5218: }
5219: };
5220: if (!$@) {
5221: &Reply($client, \$result, $userinput);
5222: } else {
5223: &Failure($client,"unknown_cmd\n",$userinput);
5224: }
5225: return 1;
5226: }
5227: ®ister_handler("autocrsreqchecks", \&crsreq_checks_handler, 0, 1, 0);
5228:
5229: sub validate_crsreq_handler {
5230: my ($cmd, $tail, $client) = @_;
5231: my $userinput = "$cmd:$tail";
5232: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = split(/:/, $tail);
5233: $instcode = &unescape($instcode);
5234: $owner = &unescape($owner);
5235: $crstype = &unescape($crstype);
5236: $inststatuslist = &unescape($inststatuslist);
5237: $instcode = &unescape($instcode);
5238: $instseclist = &unescape($instseclist);
5239: my $outcome;
5240: eval {
5241: local($SIG{__DIE__})='DEFAULT';
5242: $outcome = &localenroll::validate_crsreq($dom,$owner,$crstype,
5243: $inststatuslist,$instcode,
5244: $instseclist);
5245: };
5246: if (!$@) {
5247: &Reply($client, \$outcome, $userinput);
5248: } else {
5249: &Failure($client,"unknown_cmd\n",$userinput);
5250: }
5251: return 1;
5252: }
5253: ®ister_handler("autocrsreqvalidation", \&validate_crsreq_handler, 0, 1, 0);
5254:
1.248 foxr 5255: #
5256: # Read and retrieve institutional code format (for support form).
5257: # Formal Parameters:
5258: # $cmd - Command that dispatched us.
5259: # $tail - Tail of the command. In this case it conatins
5260: # the course domain and the coursename.
5261: # $client - Socket open on the client.
5262: # Returns:
5263: # 1 - Continue processing.
5264: #
5265: sub get_institutional_code_format_handler {
5266: my ($cmd, $tail, $client) = @_;
5267: my $userinput = "$cmd:$tail";
5268:
5269: my $reply;
5270: my($cdom,$course) = split(/:/,$tail);
5271: my @pairs = split/\&/,$course;
5272: my %instcodes = ();
5273: my %codes = ();
5274: my @codetitles = ();
5275: my %cat_titles = ();
5276: my %cat_order = ();
5277: foreach (@pairs) {
5278: my ($key,$value) = split/=/,$_;
5279: $instcodes{&unescape($key)} = &unescape($value);
5280: }
5281: my $formatreply = &localenroll::instcode_format($cdom,
5282: \%instcodes,
5283: \%codes,
5284: \@codetitles,
5285: \%cat_titles,
5286: \%cat_order);
5287: if ($formatreply eq 'ok') {
1.365 albertel 5288: my $codes_str = &Apache::lonnet::hash2str(%codes);
5289: my $codetitles_str = &Apache::lonnet::array2str(@codetitles);
5290: my $cat_titles_str = &Apache::lonnet::hash2str(%cat_titles);
5291: my $cat_order_str = &Apache::lonnet::hash2str(%cat_order);
1.248 foxr 5292: &Reply($client,
5293: $codes_str.':'.$codetitles_str.':'.$cat_titles_str.':'
5294: .$cat_order_str."\n",
5295: $userinput);
5296: } else {
5297: # this else branch added by RF since if not ok, lonc will
5298: # hang waiting on reply until timeout.
5299: #
5300: &Reply($client, "format_error\n", $userinput);
5301: }
5302:
5303: return 1;
5304: }
1.265 albertel 5305: ®ister_handler("autoinstcodeformat",
5306: \&get_institutional_code_format_handler,0,1,0);
1.246 foxr 5307:
1.345 raeburn 5308: sub get_institutional_defaults_handler {
5309: my ($cmd, $tail, $client) = @_;
5310: my $userinput = "$cmd:$tail";
5311:
5312: my $dom = $tail;
5313: my %defaults_hash;
5314: my @code_order;
5315: my $outcome;
5316: eval {
5317: local($SIG{__DIE__})='DEFAULT';
5318: $outcome = &localenroll::instcode_defaults($dom,\%defaults_hash,
5319: \@code_order);
5320: };
5321: if (!$@) {
5322: if ($outcome eq 'ok') {
5323: my $result='';
5324: while (my ($key,$value) = each(%defaults_hash)) {
5325: $result.=&escape($key).'='.&escape($value).'&';
5326: }
5327: $result .= 'code_order='.&escape(join('&',@code_order));
1.387 albertel 5328: &Reply($client,\$result,$userinput);
1.345 raeburn 5329: } else {
5330: &Reply($client,"error\n", $userinput);
5331: }
5332: } else {
5333: &Failure($client,"unknown_cmd\n",$userinput);
5334: }
5335: }
5336: ®ister_handler("autoinstcodedefaults",
5337: \&get_institutional_defaults_handler,0,1,0);
5338:
1.416 raeburn 5339: sub get_possible_instcodes_handler {
5340: my ($cmd, $tail, $client) = @_;
5341: my $userinput = "$cmd:$tail";
5342:
5343: my $reply;
5344: my $cdom = $tail;
1.417 raeburn 5345: my (@codetitles,%cat_titles,%cat_order,@code_order);
1.416 raeburn 5346: my $formatreply = &localenroll::possible_instcodes($cdom,
5347: \@codetitles,
5348: \%cat_titles,
1.417 raeburn 5349: \%cat_order,
5350: \@code_order);
1.416 raeburn 5351: if ($formatreply eq 'ok') {
5352: my $result = join('&',map {&escape($_);} (@codetitles)).':';
1.417 raeburn 5353: $result .= join('&',map {&escape($_);} (@code_order)).':';
1.416 raeburn 5354: foreach my $key (keys(%cat_titles)) {
5355: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_titles{$key}).'&';
5356: }
5357: $result =~ s/\&$//;
5358: $result .= ':';
5359: foreach my $key (keys(%cat_order)) {
5360: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_order{$key}).'&';
5361: }
5362: $result =~ s/\&$//;
5363: &Reply($client,\$result,$userinput);
5364: } else {
5365: &Reply($client, "format_error\n", $userinput);
5366: }
5367: return 1;
5368: }
5369: ®ister_handler("autopossibleinstcodes",
5370: \&get_possible_instcodes_handler,0,1,0);
5371:
1.381 raeburn 5372: sub get_institutional_user_rules {
5373: my ($cmd, $tail, $client) = @_;
5374: my $userinput = "$cmd:$tail";
5375: my $dom = &unescape($tail);
5376: my (%rules_hash,@rules_order);
5377: my $outcome;
5378: eval {
5379: local($SIG{__DIE__})='DEFAULT';
5380: $outcome = &localenroll::username_rules($dom,\%rules_hash,\@rules_order);
5381: };
5382: if (!$@) {
5383: if ($outcome eq 'ok') {
5384: my $result;
5385: foreach my $key (keys(%rules_hash)) {
5386: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
5387: }
5388: $result =~ s/\&$//;
5389: $result .= ':';
5390: if (@rules_order > 0) {
5391: foreach my $item (@rules_order) {
5392: $result .= &escape($item).'&';
5393: }
5394: }
5395: $result =~ s/\&$//;
1.387 albertel 5396: &Reply($client,\$result,$userinput);
1.381 raeburn 5397: } else {
5398: &Reply($client,"error\n", $userinput);
5399: }
5400: } else {
5401: &Failure($client,"unknown_cmd\n",$userinput);
5402: }
5403: }
5404: ®ister_handler("instuserrules",\&get_institutional_user_rules,0,1,0);
5405:
1.389 raeburn 5406: sub get_institutional_id_rules {
5407: my ($cmd, $tail, $client) = @_;
5408: my $userinput = "$cmd:$tail";
5409: my $dom = &unescape($tail);
5410: my (%rules_hash,@rules_order);
5411: my $outcome;
5412: eval {
5413: local($SIG{__DIE__})='DEFAULT';
5414: $outcome = &localenroll::id_rules($dom,\%rules_hash,\@rules_order);
5415: };
5416: if (!$@) {
5417: if ($outcome eq 'ok') {
5418: my $result;
5419: foreach my $key (keys(%rules_hash)) {
5420: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
5421: }
5422: $result =~ s/\&$//;
5423: $result .= ':';
5424: if (@rules_order > 0) {
5425: foreach my $item (@rules_order) {
5426: $result .= &escape($item).'&';
5427: }
5428: }
5429: $result =~ s/\&$//;
5430: &Reply($client,\$result,$userinput);
5431: } else {
5432: &Reply($client,"error\n", $userinput);
5433: }
5434: } else {
5435: &Failure($client,"unknown_cmd\n",$userinput);
5436: }
5437: }
5438: ®ister_handler("instidrules",\&get_institutional_id_rules,0,1,0);
5439:
1.397 raeburn 5440: sub get_institutional_selfcreate_rules {
1.396 raeburn 5441: my ($cmd, $tail, $client) = @_;
5442: my $userinput = "$cmd:$tail";
5443: my $dom = &unescape($tail);
5444: my (%rules_hash,@rules_order);
5445: my $outcome;
5446: eval {
5447: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 5448: $outcome = &localenroll::selfcreate_rules($dom,\%rules_hash,\@rules_order);
1.396 raeburn 5449: };
5450: if (!$@) {
5451: if ($outcome eq 'ok') {
5452: my $result;
5453: foreach my $key (keys(%rules_hash)) {
5454: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
5455: }
5456: $result =~ s/\&$//;
5457: $result .= ':';
5458: if (@rules_order > 0) {
5459: foreach my $item (@rules_order) {
5460: $result .= &escape($item).'&';
5461: }
5462: }
5463: $result =~ s/\&$//;
5464: &Reply($client,\$result,$userinput);
5465: } else {
5466: &Reply($client,"error\n", $userinput);
5467: }
5468: } else {
5469: &Failure($client,"unknown_cmd\n",$userinput);
5470: }
5471: }
1.397 raeburn 5472: ®ister_handler("instemailrules",\&get_institutional_selfcreate_rules,0,1,0);
1.396 raeburn 5473:
1.381 raeburn 5474:
5475: sub institutional_username_check {
5476: my ($cmd, $tail, $client) = @_;
5477: my $userinput = "$cmd:$tail";
5478: my %rulecheck;
5479: my $outcome;
5480: my ($udom,$uname,@rules) = split(/:/,$tail);
5481: $udom = &unescape($udom);
5482: $uname = &unescape($uname);
5483: @rules = map {&unescape($_);} (@rules);
5484: eval {
5485: local($SIG{__DIE__})='DEFAULT';
5486: $outcome = &localenroll::username_check($udom,$uname,\@rules,\%rulecheck);
5487: };
5488: if (!$@) {
5489: if ($outcome eq 'ok') {
5490: my $result='';
5491: foreach my $key (keys(%rulecheck)) {
5492: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
5493: }
1.387 albertel 5494: &Reply($client,\$result,$userinput);
1.381 raeburn 5495: } else {
5496: &Reply($client,"error\n", $userinput);
5497: }
5498: } else {
5499: &Failure($client,"unknown_cmd\n",$userinput);
5500: }
5501: }
5502: ®ister_handler("instrulecheck",\&institutional_username_check,0,1,0);
5503:
1.389 raeburn 5504: sub institutional_id_check {
5505: my ($cmd, $tail, $client) = @_;
5506: my $userinput = "$cmd:$tail";
5507: my %rulecheck;
5508: my $outcome;
5509: my ($udom,$id,@rules) = split(/:/,$tail);
5510: $udom = &unescape($udom);
5511: $id = &unescape($id);
5512: @rules = map {&unescape($_);} (@rules);
5513: eval {
5514: local($SIG{__DIE__})='DEFAULT';
5515: $outcome = &localenroll::id_check($udom,$id,\@rules,\%rulecheck);
5516: };
5517: if (!$@) {
5518: if ($outcome eq 'ok') {
5519: my $result='';
5520: foreach my $key (keys(%rulecheck)) {
5521: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
5522: }
5523: &Reply($client,\$result,$userinput);
5524: } else {
5525: &Reply($client,"error\n", $userinput);
5526: }
5527: } else {
5528: &Failure($client,"unknown_cmd\n",$userinput);
5529: }
5530: }
5531: ®ister_handler("instidrulecheck",\&institutional_id_check,0,1,0);
1.345 raeburn 5532:
1.397 raeburn 5533: sub institutional_selfcreate_check {
1.396 raeburn 5534: my ($cmd, $tail, $client) = @_;
5535: my $userinput = "$cmd:$tail";
5536: my %rulecheck;
5537: my $outcome;
5538: my ($udom,$email,@rules) = split(/:/,$tail);
5539: $udom = &unescape($udom);
5540: $email = &unescape($email);
5541: @rules = map {&unescape($_);} (@rules);
5542: eval {
5543: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 5544: $outcome = &localenroll::selfcreate_check($udom,$email,\@rules,\%rulecheck);
1.396 raeburn 5545: };
5546: if (!$@) {
5547: if ($outcome eq 'ok') {
5548: my $result='';
5549: foreach my $key (keys(%rulecheck)) {
5550: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
5551: }
5552: &Reply($client,\$result,$userinput);
5553: } else {
5554: &Reply($client,"error\n", $userinput);
5555: }
5556: } else {
5557: &Failure($client,"unknown_cmd\n",$userinput);
5558: }
5559: }
1.397 raeburn 5560: ®ister_handler("instselfcreatecheck",\&institutional_selfcreate_check,0,1,0);
1.396 raeburn 5561:
1.317 raeburn 5562: # Get domain specific conditions for import of student photographs to a course
5563: #
5564: # Retrieves information from photo_permission subroutine in localenroll.
5565: # Returns outcome (ok) if no processing errors, and whether course owner is
5566: # required to accept conditions of use (yes/no).
5567: #
5568: #
5569: sub photo_permission_handler {
5570: my ($cmd, $tail, $client) = @_;
5571: my $userinput = "$cmd:$tail";
5572: my $cdom = $tail;
5573: my ($perm_reqd,$conditions);
1.320 albertel 5574: my $outcome;
5575: eval {
5576: local($SIG{__DIE__})='DEFAULT';
5577: $outcome = &localenroll::photo_permission($cdom,\$perm_reqd,
5578: \$conditions);
5579: };
5580: if (!$@) {
5581: &Reply($client, &escape($outcome.':'.$perm_reqd.':'. $conditions)."\n",
5582: $userinput);
5583: } else {
5584: &Failure($client,"unknown_cmd\n",$userinput);
5585: }
5586: return 1;
1.317 raeburn 5587: }
5588: ®ister_handler("autophotopermission",\&photo_permission_handler,0,1,0);
5589:
5590: #
5591: # Checks if student photo is available for a user in the domain, in the user's
5592: # directory (in /userfiles/internal/studentphoto.jpg).
5593: # Uses localstudentphoto:fetch() to ensure there is an up to date copy of
5594: # the student's photo.
5595:
5596: sub photo_check_handler {
5597: my ($cmd, $tail, $client) = @_;
5598: my $userinput = "$cmd:$tail";
5599: my ($udom,$uname,$pid) = split(/:/,$tail);
5600: $udom = &unescape($udom);
5601: $uname = &unescape($uname);
5602: $pid = &unescape($pid);
5603: my $path=&propath($udom,$uname).'/userfiles/internal/';
5604: if (!-e $path) {
5605: &mkpath($path);
5606: }
5607: my $response;
5608: my $result = &localstudentphoto::fetch($udom,$uname,$pid,\$response);
5609: $result .= ':'.$response;
5610: &Reply($client, &escape($result)."\n",$userinput);
1.320 albertel 5611: return 1;
1.317 raeburn 5612: }
5613: ®ister_handler("autophotocheck",\&photo_check_handler,0,1,0);
5614:
5615: #
5616: # Retrieve information from localenroll about whether to provide a button
5617: # for users who have enbled import of student photos to initiate an
5618: # update of photo files for registered students. Also include
5619: # comment to display alongside button.
5620:
5621: sub photo_choice_handler {
5622: my ($cmd, $tail, $client) = @_;
5623: my $userinput = "$cmd:$tail";
5624: my $cdom = &unescape($tail);
1.320 albertel 5625: my ($update,$comment);
5626: eval {
5627: local($SIG{__DIE__})='DEFAULT';
5628: ($update,$comment) = &localenroll::manager_photo_update($cdom);
5629: };
5630: if (!$@) {
5631: &Reply($client,&escape($update).':'.&escape($comment)."\n",$userinput);
5632: } else {
5633: &Failure($client,"unknown_cmd\n",$userinput);
5634: }
5635: return 1;
1.317 raeburn 5636: }
5637: ®ister_handler("autophotochoice",\&photo_choice_handler,0,1,0);
5638:
1.265 albertel 5639: #
5640: # Gets a student's photo to exist (in the correct image type) in the user's
5641: # directory.
5642: # Formal Parameters:
5643: # $cmd - The command request that got us dispatched.
5644: # $tail - A colon separated set of words that will be split into:
5645: # $domain - student's domain
5646: # $uname - student username
5647: # $type - image type desired
5648: # $client - The socket open on the client.
5649: # Returns:
5650: # 1 - continue processing.
1.317 raeburn 5651:
1.265 albertel 5652: sub student_photo_handler {
5653: my ($cmd, $tail, $client) = @_;
1.317 raeburn 5654: my ($domain,$uname,$ext,$type) = split(/:/, $tail);
1.265 albertel 5655:
1.317 raeburn 5656: my $path=&propath($domain,$uname). '/userfiles/internal/';
5657: my $filename = 'studentphoto.'.$ext;
5658: if ($type eq 'thumbnail') {
5659: $filename = 'studentphoto_tn.'.$ext;
5660: }
5661: if (-e $path.$filename) {
1.265 albertel 5662: &Reply($client,"ok\n","$cmd:$tail");
5663: return 1;
5664: }
5665: &mkpath($path);
1.317 raeburn 5666: my $file;
5667: if ($type eq 'thumbnail') {
1.320 albertel 5668: eval {
5669: local($SIG{__DIE__})='DEFAULT';
5670: $file=&localstudentphoto::fetch_thumbnail($domain,$uname);
5671: };
1.317 raeburn 5672: } else {
5673: $file=&localstudentphoto::fetch($domain,$uname);
5674: }
1.265 albertel 5675: if (!$file) {
5676: &Failure($client,"unavailable\n","$cmd:$tail");
5677: return 1;
5678: }
1.317 raeburn 5679: if (!-e $path.$filename) { &convert_photo($file,$path.$filename); }
5680: if (-e $path.$filename) {
1.265 albertel 5681: &Reply($client,"ok\n","$cmd:$tail");
5682: return 1;
5683: }
5684: &Failure($client,"unable_to_convert\n","$cmd:$tail");
5685: return 1;
5686: }
5687: ®ister_handler("studentphoto", \&student_photo_handler, 0, 1, 0);
1.246 foxr 5688:
1.361 raeburn 5689: sub inst_usertypes_handler {
5690: my ($cmd, $domain, $client) = @_;
5691: my $res;
5692: my $userinput = $cmd.":".$domain; # For logging purposes.
1.370 albertel 5693: my (%typeshash,@order,$result);
5694: eval {
5695: local($SIG{__DIE__})='DEFAULT';
5696: $result=&localenroll::inst_usertypes($domain,\%typeshash,\@order);
5697: };
5698: if ($result eq 'ok') {
1.361 raeburn 5699: if (keys(%typeshash) > 0) {
5700: foreach my $key (keys(%typeshash)) {
5701: $res.=&escape($key).'='.&escape($typeshash{$key}).'&';
5702: }
5703: }
5704: $res=~s/\&$//;
5705: $res .= ':';
5706: if (@order > 0) {
5707: foreach my $item (@order) {
5708: $res .= &escape($item).'&';
5709: }
5710: }
5711: $res=~s/\&$//;
5712: }
1.387 albertel 5713: &Reply($client, \$res, $userinput);
1.361 raeburn 5714: return 1;
5715: }
5716: ®ister_handler("inst_usertypes", \&inst_usertypes_handler, 0, 1, 0);
5717:
1.264 albertel 5718: # mkpath makes all directories for a file, expects an absolute path with a
5719: # file or a trailing / if just a dir is passed
5720: # returns 1 on success 0 on failure
5721: sub mkpath {
5722: my ($file)=@_;
5723: my @parts=split(/\//,$file,-1);
5724: my $now=$parts[0].'/'.$parts[1].'/'.$parts[2];
5725: for (my $i=3;$i<= ($#parts-1);$i++) {
1.265 albertel 5726: $now.='/'.$parts[$i];
1.264 albertel 5727: if (!-e $now) {
5728: if (!mkdir($now,0770)) { return 0; }
5729: }
5730: }
5731: return 1;
5732: }
5733:
1.207 foxr 5734: #---------------------------------------------------------------
5735: #
5736: # Getting, decoding and dispatching requests:
5737: #
5738: #
5739: # Get a Request:
5740: # Gets a Request message from the client. The transaction
5741: # is defined as a 'line' of text. We remove the new line
5742: # from the text line.
1.226 foxr 5743: #
1.211 albertel 5744: sub get_request {
1.207 foxr 5745: my $input = <$client>;
5746: chomp($input);
1.226 foxr 5747:
1.234 foxr 5748: &Debug("get_request: Request = $input\n");
1.207 foxr 5749:
5750: &status('Processing '.$clientname.':'.$input);
5751:
5752: return $input;
5753: }
1.212 foxr 5754: #---------------------------------------------------------------
5755: #
5756: # Process a request. This sub should shrink as each action
5757: # gets farmed out into a separat sub that is registered
5758: # with the dispatch hash.
5759: #
5760: # Parameters:
5761: # user_input - The request received from the client (lonc).
5762: # Returns:
5763: # true to keep processing, false if caller should exit.
5764: #
5765: sub process_request {
5766: my ($userinput) = @_; # Easier for now to break style than to
5767: # fix all the userinput -> user_input.
5768: my $wasenc = 0; # True if request was encrypted.
5769: # ------------------------------------------------------------ See if encrypted
1.322 albertel 5770: # for command
5771: # sethost:<server>
5772: # <command>:<args>
5773: # we just send it to the processor
5774: # for
5775: # sethost:<server>:<command>:<args>
5776: # we do the implict set host and then do the command
5777: if ($userinput =~ /^sethost:/) {
5778: (my $cmd,my $newid,$userinput) = split(':',$userinput,3);
5779: if (defined($userinput)) {
5780: &sethost("$cmd:$newid");
5781: } else {
5782: $userinput = "$cmd:$newid";
5783: }
5784: }
5785:
1.212 foxr 5786: if ($userinput =~ /^enc/) {
5787: $userinput = decipher($userinput);
5788: $wasenc=1;
5789: if(!$userinput) { # Cipher not defined.
1.251 foxr 5790: &Failure($client, "error: Encrypted data without negotated key\n");
1.212 foxr 5791: return 0;
5792: }
5793: }
5794: Debug("process_request: $userinput\n");
5795:
1.213 foxr 5796: #
5797: # The 'correct way' to add a command to lond is now to
5798: # write a sub to execute it and Add it to the command dispatch
5799: # hash via a call to register_handler.. The comments to that
5800: # sub should give you enough to go on to show how to do this
5801: # along with the examples that are building up as this code
5802: # is getting refactored. Until all branches of the
5803: # if/elseif monster below have been factored out into
5804: # separate procesor subs, if the dispatch hash is missing
5805: # the command keyword, we will fall through to the remainder
5806: # of the if/else chain below in order to keep this thing in
5807: # working order throughout the transmogrification.
5808:
5809: my ($command, $tail) = split(/:/, $userinput, 2);
5810: chomp($command);
5811: chomp($tail);
5812: $tail =~ s/(\r)//; # This helps people debugging with e.g. telnet.
1.214 foxr 5813: $command =~ s/(\r)//; # And this too for parameterless commands.
5814: if(!$tail) {
5815: $tail =""; # defined but blank.
5816: }
1.213 foxr 5817:
5818: &Debug("Command received: $command, encoded = $wasenc");
5819:
5820: if(defined $Dispatcher{$command}) {
5821:
5822: my $dispatch_info = $Dispatcher{$command};
5823: my $handler = $$dispatch_info[0];
5824: my $need_encode = $$dispatch_info[1];
5825: my $client_types = $$dispatch_info[2];
5826: Debug("Matched dispatch hash: mustencode: $need_encode "
5827: ."ClientType $client_types");
5828:
5829: # Validate the request:
5830:
5831: my $ok = 1;
5832: my $requesterprivs = 0;
5833: if(&isClient()) {
5834: $requesterprivs |= $CLIENT_OK;
5835: }
5836: if(&isManager()) {
5837: $requesterprivs |= $MANAGER_OK;
5838: }
5839: if($need_encode && (!$wasenc)) {
5840: Debug("Must encode but wasn't: $need_encode $wasenc");
5841: $ok = 0;
5842: }
5843: if(($client_types & $requesterprivs) == 0) {
5844: Debug("Client not privileged to do this operation");
5845: $ok = 0;
5846: }
5847:
5848: if($ok) {
5849: Debug("Dispatching to handler $command $tail");
5850: my $keep_going = &$handler($command, $tail, $client);
5851: return $keep_going;
5852: } else {
5853: Debug("Refusing to dispatch because client did not match requirements");
5854: Failure($client, "refused\n", $userinput);
5855: return 1;
5856: }
5857:
5858: }
5859:
1.262 foxr 5860: print $client "unknown_cmd\n";
1.212 foxr 5861: # -------------------------------------------------------------------- complete
5862: Debug("process_request - returning 1");
5863: return 1;
5864: }
1.207 foxr 5865: #
5866: # Decipher encoded traffic
5867: # Parameters:
5868: # input - Encoded data.
5869: # Returns:
5870: # Decoded data or undef if encryption key was not yet negotiated.
5871: # Implicit input:
5872: # cipher - This global holds the negotiated encryption key.
5873: #
1.211 albertel 5874: sub decipher {
1.207 foxr 5875: my ($input) = @_;
5876: my $output = '';
1.212 foxr 5877:
5878:
1.207 foxr 5879: if($cipher) {
5880: my($enc, $enclength, $encinput) = split(/:/, $input);
5881: for(my $encidx = 0; $encidx < length($encinput); $encidx += 16) {
5882: $output .=
5883: $cipher->decrypt(pack("H16", substr($encinput, $encidx, 16)));
5884: }
5885: return substr($output, 0, $enclength);
5886: } else {
5887: return undef;
5888: }
5889: }
5890:
5891: #
5892: # Register a command processor. This function is invoked to register a sub
5893: # to process a request. Once registered, the ProcessRequest sub can automatically
5894: # dispatch requests to an appropriate sub, and do the top level validity checking
5895: # as well:
5896: # - Is the keyword recognized.
5897: # - Is the proper client type attempting the request.
5898: # - Is the request encrypted if it has to be.
5899: # Parameters:
5900: # $request_name - Name of the request being registered.
5901: # This is the command request that will match
5902: # against the hash keywords to lookup the information
5903: # associated with the dispatch information.
5904: # $procedure - Reference to a sub to call to process the request.
5905: # All subs get called as follows:
5906: # Procedure($cmd, $tail, $replyfd, $key)
5907: # $cmd - the actual keyword that invoked us.
5908: # $tail - the tail of the request that invoked us.
5909: # $replyfd- File descriptor connected to the client
5910: # $must_encode - True if the request must be encoded to be good.
5911: # $client_ok - True if it's ok for a client to request this.
5912: # $manager_ok - True if it's ok for a manager to request this.
5913: # Side effects:
5914: # - On success, the Dispatcher hash has an entry added for the key $RequestName
5915: # - On failure, the program will die as it's a bad internal bug to try to
5916: # register a duplicate command handler.
5917: #
1.211 albertel 5918: sub register_handler {
1.212 foxr 5919: my ($request_name,$procedure,$must_encode, $client_ok,$manager_ok) = @_;
1.207 foxr 5920:
5921: # Don't allow duplication#
5922:
5923: if (defined $Dispatcher{$request_name}) {
5924: die "Attempting to define a duplicate request handler for $request_name\n";
5925: }
5926: # Build the client type mask:
5927:
5928: my $client_type_mask = 0;
5929: if($client_ok) {
5930: $client_type_mask |= $CLIENT_OK;
5931: }
5932: if($manager_ok) {
5933: $client_type_mask |= $MANAGER_OK;
5934: }
5935:
5936: # Enter the hash:
5937:
5938: my @entry = ($procedure, $must_encode, $client_type_mask);
5939:
5940: $Dispatcher{$request_name} = \@entry;
5941:
5942: }
5943:
5944:
5945: #------------------------------------------------------------------
5946:
5947:
5948:
5949:
1.141 foxr 5950: #
1.96 foxr 5951: # Convert an error return code from lcpasswd to a string value.
5952: #
5953: sub lcpasswdstrerror {
5954: my $ErrorCode = shift;
1.97 foxr 5955: if(($ErrorCode < 0) || ($ErrorCode > $lastpwderror)) {
1.96 foxr 5956: return "lcpasswd Unrecognized error return value ".$ErrorCode;
5957: } else {
1.98 foxr 5958: return $passwderrors[$ErrorCode];
1.96 foxr 5959: }
5960: }
5961:
1.97 foxr 5962: #
5963: # Convert an error return code from lcuseradd to a string value:
5964: #
5965: sub lcuseraddstrerror {
5966: my $ErrorCode = shift;
5967: if(($ErrorCode < 0) || ($ErrorCode > $lastadderror)) {
5968: return "lcuseradd - Unrecognized error code: ".$ErrorCode;
5969: } else {
1.98 foxr 5970: return $adderrors[$ErrorCode];
1.97 foxr 5971: }
5972: }
5973:
1.23 harris41 5974: # grabs exception and records it to log before exiting
5975: sub catchexception {
1.27 albertel 5976: my ($error)=@_;
1.25 www 5977: $SIG{'QUIT'}='DEFAULT';
5978: $SIG{__DIE__}='DEFAULT';
1.165 albertel 5979: &status("Catching exception");
1.190 albertel 5980: &logthis("<font color='red'>CRITICAL: "
1.373 albertel 5981: ."ABNORMAL EXIT. Child $$ for server ".$perlvar{'lonHostID'}." died through "
1.27 albertel 5982: ."a crash with this error msg->[$error]</font>");
1.57 www 5983: &logthis('Famous last words: '.$status.' - '.$lastlog);
1.27 albertel 5984: if ($client) { print $client "error: $error\n"; }
1.59 www 5985: $server->close();
1.27 albertel 5986: die($error);
1.23 harris41 5987: }
1.63 www 5988: sub timeout {
1.165 albertel 5989: &status("Handling Timeout");
1.190 albertel 5990: &logthis("<font color='red'>CRITICAL: TIME OUT ".$$."</font>");
1.63 www 5991: &catchexception('Timeout');
5992: }
1.22 harris41 5993: # -------------------------------- Set signal handlers to record abnormal exits
5994:
1.226 foxr 5995:
1.22 harris41 5996: $SIG{'QUIT'}=\&catchexception;
5997: $SIG{__DIE__}=\&catchexception;
5998:
1.81 matthew 5999: # ---------------------------------- Read loncapa_apache.conf and loncapa.conf
1.95 harris41 6000: &status("Read loncapa.conf and loncapa_apache.conf");
6001: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
1.141 foxr 6002: %perlvar=%{$perlvarref};
1.80 harris41 6003: undef $perlvarref;
1.19 www 6004:
1.35 harris41 6005: # ----------------------------- Make sure this process is running from user=www
6006: my $wwwid=getpwnam('www');
6007: if ($wwwid!=$<) {
1.134 albertel 6008: my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
6009: my $subj="LON: $currenthostid User ID mismatch";
1.37 harris41 6010: system("echo 'User ID mismatch. lond must be run as user www.' |\
1.35 harris41 6011: mailto $emailto -s '$subj' > /dev/null");
6012: exit 1;
6013: }
6014:
1.19 www 6015: # --------------------------------------------- Check if other instance running
6016:
6017: my $pidfile="$perlvar{'lonDaemons'}/logs/lond.pid";
6018:
6019: if (-e $pidfile) {
6020: my $lfh=IO::File->new("$pidfile");
6021: my $pide=<$lfh>;
6022: chomp($pide);
1.29 harris41 6023: if (kill 0 => $pide) { die "already running"; }
1.19 www 6024: }
1.1 albertel 6025:
6026: # ------------------------------------------------------------- Read hosts file
6027:
6028:
6029:
6030: # establish SERVER socket, bind and listen.
6031: $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},
6032: Type => SOCK_STREAM,
6033: Proto => 'tcp',
1.467.2.2 raeburn 6034: ReuseAddr => 1,
1.1 albertel 6035: Listen => 10 )
1.29 harris41 6036: or die "making socket: $@\n";
1.1 albertel 6037:
6038: # --------------------------------------------------------- Do global variables
6039:
6040: # global variables
6041:
1.134 albertel 6042: my %children = (); # keys are current child process IDs
1.1 albertel 6043:
6044: sub REAPER { # takes care of dead children
6045: $SIG{CHLD} = \&REAPER;
1.165 albertel 6046: &status("Handling child death");
1.178 foxr 6047: my $pid;
6048: do {
6049: $pid = waitpid(-1,&WNOHANG());
6050: if (defined($children{$pid})) {
6051: &logthis("Child $pid died");
6052: delete($children{$pid});
1.183 albertel 6053: } elsif ($pid > 0) {
1.178 foxr 6054: &logthis("Unknown Child $pid died");
6055: }
6056: } while ( $pid > 0 );
6057: foreach my $child (keys(%children)) {
6058: $pid = waitpid($child,&WNOHANG());
6059: if ($pid > 0) {
6060: &logthis("Child $child - $pid looks like we missed it's death");
6061: delete($children{$pid});
6062: }
1.176 albertel 6063: }
1.165 albertel 6064: &status("Finished Handling child death");
1.1 albertel 6065: }
6066:
6067: sub HUNTSMAN { # signal handler for SIGINT
1.165 albertel 6068: &status("Killing children (INT)");
1.1 albertel 6069: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
6070: kill 'INT' => keys %children;
1.59 www 6071: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.1 albertel 6072: my $execdir=$perlvar{'lonDaemons'};
6073: unlink("$execdir/logs/lond.pid");
1.190 albertel 6074: &logthis("<font color='red'>CRITICAL: Shutting down</font>");
1.165 albertel 6075: &status("Done killing children");
1.1 albertel 6076: exit; # clean up with dignity
6077: }
6078:
6079: sub HUPSMAN { # signal handler for SIGHUP
6080: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
1.165 albertel 6081: &status("Killing children for restart (HUP)");
1.1 albertel 6082: kill 'INT' => keys %children;
1.59 www 6083: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.190 albertel 6084: &logthis("<font color='red'>CRITICAL: Restarting</font>");
1.134 albertel 6085: my $execdir=$perlvar{'lonDaemons'};
1.30 harris41 6086: unlink("$execdir/logs/lond.pid");
1.165 albertel 6087: &status("Restarting self (HUP)");
1.1 albertel 6088: exec("$execdir/lond"); # here we go again
6089: }
6090:
1.144 foxr 6091: #
1.148 foxr 6092: # Reload the Apache daemon's state.
1.150 foxr 6093: # This is done by invoking /home/httpd/perl/apachereload
6094: # a setuid perl script that can be root for us to do this job.
1.148 foxr 6095: #
6096: sub ReloadApache {
1.467.2.3 raeburn 6097: if (&LONCAPA::try_to_lock('/tmp/lock_apachereload')) {
6098: my $execdir = $perlvar{'lonDaemons'};
6099: my $script = $execdir."/apachereload";
6100: system($script);
6101: unlink('/tmp/lock_apachereload'); # Remove the lock file.
6102: }
1.148 foxr 6103: }
6104:
6105: #
1.144 foxr 6106: # Called in response to a USR2 signal.
6107: # - Reread hosts.tab
6108: # - All children connected to hosts that were removed from hosts.tab
6109: # are killed via SIGINT
6110: # - All children connected to previously existing hosts are sent SIGUSR1
6111: # - Our internal hosts hash is updated to reflect the new contents of
6112: # hosts.tab causing connections from hosts added to hosts.tab to
6113: # now be honored.
6114: #
6115: sub UpdateHosts {
1.165 albertel 6116: &status("Reload hosts.tab");
1.147 foxr 6117: logthis('<font color="blue"> Updating connections </font>');
1.148 foxr 6118: #
6119: # The %children hash has the set of IP's we currently have children
6120: # on. These need to be matched against records in the hosts.tab
6121: # Any ip's no longer in the table get killed off they correspond to
6122: # either dropped or changed hosts. Note that the re-read of the table
6123: # will take care of new and changed hosts as connections come into being.
6124:
1.371 albertel 6125: &Apache::lonnet::reset_hosts_info();
1.148 foxr 6126:
1.368 albertel 6127: foreach my $child (keys(%children)) {
1.148 foxr 6128: my $childip = $children{$child};
1.374 albertel 6129: if ($childip ne '127.0.0.1'
6130: && !defined(&Apache::lonnet::get_hosts_from_ip($childip))) {
1.149 foxr 6131: logthis('<font color="blue"> UpdateHosts killing child '
6132: ." $child for ip $childip </font>");
1.148 foxr 6133: kill('INT', $child);
1.149 foxr 6134: } else {
6135: logthis('<font color="green"> keeping child for ip '
6136: ." $childip (pid=$child) </font>");
1.148 foxr 6137: }
6138: }
6139: ReloadApache;
1.165 albertel 6140: &status("Finished reloading hosts.tab");
1.144 foxr 6141: }
6142:
1.148 foxr 6143:
1.57 www 6144: sub checkchildren {
1.165 albertel 6145: &status("Checking on the children (sending signals)");
1.57 www 6146: &initnewstatus();
6147: &logstatus();
6148: &logthis('Going to check on the children');
1.134 albertel 6149: my $docdir=$perlvar{'lonDocRoot'};
1.61 harris41 6150: foreach (sort keys %children) {
1.221 albertel 6151: #sleep 1;
1.57 www 6152: unless (kill 'USR1' => $_) {
6153: &logthis ('Child '.$_.' is dead');
6154: &logstatus($$.' is dead');
1.221 albertel 6155: delete($children{$_});
1.57 www 6156: }
1.61 harris41 6157: }
1.63 www 6158: sleep 5;
1.212 foxr 6159: $SIG{ALRM} = sub { Debug("timeout");
6160: die "timeout"; };
1.113 albertel 6161: $SIG{__DIE__} = 'DEFAULT';
1.165 albertel 6162: &status("Checking on the children (waiting for reports)");
1.63 www 6163: foreach (sort keys %children) {
6164: unless (-e "$docdir/lon-status/londchld/$_.txt") {
1.113 albertel 6165: eval {
6166: alarm(300);
1.63 www 6167: &logthis('Child '.$_.' did not respond');
1.67 albertel 6168: kill 9 => $_;
1.131 albertel 6169: #$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
6170: #$subj="LON: $currenthostid killed lond process $_";
6171: #my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null`;
6172: #$execdir=$perlvar{'lonDaemons'};
6173: #$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_`;
1.221 albertel 6174: delete($children{$_});
1.113 albertel 6175: alarm(0);
6176: }
1.63 www 6177: }
6178: }
1.113 albertel 6179: $SIG{ALRM} = 'DEFAULT';
1.155 albertel 6180: $SIG{__DIE__} = \&catchexception;
1.165 albertel 6181: &status("Finished checking children");
1.221 albertel 6182: &logthis('Finished Checking children');
1.57 www 6183: }
6184:
1.1 albertel 6185: # --------------------------------------------------------------------- Logging
6186:
6187: sub logthis {
6188: my $message=shift;
6189: my $execdir=$perlvar{'lonDaemons'};
6190: my $fh=IO::File->new(">>$execdir/logs/lond.log");
6191: my $now=time;
6192: my $local=localtime($now);
1.58 www 6193: $lastlog=$local.': '.$message;
1.1 albertel 6194: print $fh "$local ($$): $message\n";
6195: }
6196:
1.77 foxr 6197: # ------------------------- Conditional log if $DEBUG true.
6198: sub Debug {
6199: my $message = shift;
6200: if($DEBUG) {
6201: &logthis($message);
6202: }
6203: }
1.161 foxr 6204:
6205: #
6206: # Sub to do replies to client.. this gives a hook for some
6207: # debug tracing too:
6208: # Parameters:
6209: # fd - File open on client.
6210: # reply - Text to send to client.
6211: # request - Original request from client.
6212: #
6213: sub Reply {
1.192 foxr 6214: my ($fd, $reply, $request) = @_;
1.387 albertel 6215: if (ref($reply)) {
6216: print $fd $$reply;
6217: print $fd "\n";
6218: if ($DEBUG) { Debug("Request was $request Reply was $$reply"); }
6219: } else {
6220: print $fd $reply;
6221: if ($DEBUG) { Debug("Request was $request Reply was $reply"); }
6222: }
1.212 foxr 6223: $Transactions++;
6224: }
6225:
6226:
6227: #
6228: # Sub to report a failure.
6229: # This function:
6230: # - Increments the failure statistic counters.
6231: # - Invokes Reply to send the error message to the client.
6232: # Parameters:
6233: # fd - File descriptor open on the client
6234: # reply - Reply text to emit.
6235: # request - The original request message (used by Reply
6236: # to debug if that's enabled.
6237: # Implicit outputs:
6238: # $Failures- The number of failures is incremented.
6239: # Reply (invoked here) sends a message to the
6240: # client:
6241: #
6242: sub Failure {
6243: my $fd = shift;
6244: my $reply = shift;
6245: my $request = shift;
6246:
6247: $Failures++;
6248: Reply($fd, $reply, $request); # That's simple eh?
1.161 foxr 6249: }
1.57 www 6250: # ------------------------------------------------------------------ Log status
6251:
6252: sub logstatus {
1.178 foxr 6253: &status("Doing logging");
6254: my $docdir=$perlvar{'lonDocRoot'};
6255: {
6256: my $fh=IO::File->new(">$docdir/lon-status/londchld/$$.txt");
1.200 matthew 6257: print $fh $status."\n".$lastlog."\n".time."\n$keymode";
1.178 foxr 6258: $fh->close();
6259: }
1.221 albertel 6260: &status("Finished $$.txt");
6261: {
6262: open(LOG,">>$docdir/lon-status/londstatus.txt");
6263: flock(LOG,LOCK_EX);
6264: print LOG $$."\t".$clientname."\t".$currenthostid."\t"
6265: .$status."\t".$lastlog."\t $keymode\n";
1.275 albertel 6266: flock(LOG,LOCK_UN);
1.221 albertel 6267: close(LOG);
6268: }
1.178 foxr 6269: &status("Finished logging");
1.57 www 6270: }
6271:
6272: sub initnewstatus {
6273: my $docdir=$perlvar{'lonDocRoot'};
6274: my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt");
1.460 foxr 6275: my $now=time();
1.57 www 6276: my $local=localtime($now);
6277: print $fh "LOND status $local - parent $$\n\n";
1.64 www 6278: opendir(DIR,"$docdir/lon-status/londchld");
1.134 albertel 6279: while (my $filename=readdir(DIR)) {
1.64 www 6280: unlink("$docdir/lon-status/londchld/$filename");
6281: }
6282: closedir(DIR);
1.57 www 6283: }
6284:
6285: # -------------------------------------------------------------- Status setting
6286:
6287: sub status {
6288: my $what=shift;
6289: my $now=time;
6290: my $local=localtime($now);
1.178 foxr 6291: $status=$local.': '.$what;
6292: $0='lond: '.$what.' '.$local;
1.57 www 6293: }
1.11 www 6294:
1.13 www 6295: # -------------------------------------------------------------- Talk to lonsql
6296:
1.234 foxr 6297: sub sql_reply {
1.12 harris41 6298: my ($cmd)=@_;
1.234 foxr 6299: my $answer=&sub_sql_reply($cmd);
6300: if ($answer eq 'con_lost') { $answer=&sub_sql_reply($cmd); }
1.12 harris41 6301: return $answer;
6302: }
6303:
1.234 foxr 6304: sub sub_sql_reply {
1.12 harris41 6305: my ($cmd)=@_;
6306: my $unixsock="mysqlsock";
6307: my $peerfile="$perlvar{'lonSockDir'}/$unixsock";
6308: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
6309: Type => SOCK_STREAM,
6310: Timeout => 10)
6311: or return "con_lost";
1.319 www 6312: print $sclient "$cmd:$currentdomainid\n";
1.12 harris41 6313: my $answer=<$sclient>;
6314: chomp($answer);
6315: if (!$answer) { $answer="con_lost"; }
6316: return $answer;
6317: }
6318:
1.1 albertel 6319: # --------------------------------------- Is this the home server of an author?
1.11 www 6320:
1.1 albertel 6321: sub ishome {
6322: my $author=shift;
6323: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
6324: my ($udom,$uname)=split(/\//,$author);
6325: my $proname=propath($udom,$uname);
6326: if (-e $proname) {
6327: return 'owner';
6328: } else {
6329: return 'not_owner';
6330: }
6331: }
6332:
6333: # ======================================================= Continue main program
6334: # ---------------------------------------------------- Fork once and dissociate
6335:
1.134 albertel 6336: my $fpid=fork;
1.1 albertel 6337: exit if $fpid;
1.29 harris41 6338: die "Couldn't fork: $!" unless defined ($fpid);
1.1 albertel 6339:
1.29 harris41 6340: POSIX::setsid() or die "Can't start new session: $!";
1.1 albertel 6341:
6342: # ------------------------------------------------------- Write our PID on disk
6343:
1.134 albertel 6344: my $execdir=$perlvar{'lonDaemons'};
1.1 albertel 6345: open (PIDSAVE,">$execdir/logs/lond.pid");
6346: print PIDSAVE "$$\n";
6347: close(PIDSAVE);
1.190 albertel 6348: &logthis("<font color='red'>CRITICAL: ---------- Starting ----------</font>");
1.57 www 6349: &status('Starting');
1.1 albertel 6350:
1.106 foxr 6351:
1.1 albertel 6352:
6353: # ----------------------------------------------------- Install signal handlers
6354:
1.57 www 6355:
1.1 albertel 6356: $SIG{CHLD} = \&REAPER;
6357: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
6358: $SIG{HUP} = \&HUPSMAN;
1.57 www 6359: $SIG{USR1} = \&checkchildren;
1.144 foxr 6360: $SIG{USR2} = \&UpdateHosts;
1.106 foxr 6361:
1.148 foxr 6362: # Read the host hashes:
1.368 albertel 6363: &Apache::lonnet::load_hosts_tab();
1.447 raeburn 6364: my %iphost = &Apache::lonnet::get_iphost(1);
1.106 foxr 6365:
1.286 albertel 6366: my $dist=`$perlvar{'lonDaemons'}/distprobe`;
6367:
1.467.2.3 raeburn 6368: my $arch = `uname -i`;
1.467.2.4 raeburn 6369: chomp($arch);
1.467.2.3 raeburn 6370: if ($arch eq 'unknown') {
6371: $arch = `uname -m`;
1.467.2.4 raeburn 6372: chomp($arch);
1.467.2.3 raeburn 6373: }
6374:
1.106 foxr 6375: # --------------------------------------------------------------
6376: # Accept connections. When a connection comes in, it is validated
6377: # and if good, a child process is created to process transactions
6378: # along the connection.
6379:
1.1 albertel 6380: while (1) {
1.165 albertel 6381: &status('Starting accept');
1.106 foxr 6382: $client = $server->accept() or next;
1.165 albertel 6383: &status('Accepted '.$client.' off to spawn');
1.386 albertel 6384: make_new_child($client);
1.165 albertel 6385: &status('Finished spawning');
1.1 albertel 6386: }
6387:
1.212 foxr 6388: sub make_new_child {
6389: my $pid;
6390: # my $cipher; # Now global
6391: my $sigset;
1.178 foxr 6392:
1.212 foxr 6393: $client = shift;
6394: &status('Starting new child '.$client);
6395: &logthis('<font color="green"> Attempting to start child ('.$client.
6396: ")</font>");
6397: # block signal for fork
6398: $sigset = POSIX::SigSet->new(SIGINT);
6399: sigprocmask(SIG_BLOCK, $sigset)
6400: or die "Can't block SIGINT for fork: $!\n";
1.178 foxr 6401:
1.212 foxr 6402: die "fork: $!" unless defined ($pid = fork);
1.178 foxr 6403:
1.212 foxr 6404: $client->sockopt(SO_KEEPALIVE, 1); # Enable monitoring of
6405: # connection liveness.
1.178 foxr 6406:
1.212 foxr 6407: #
6408: # Figure out who we're talking to so we can record the peer in
6409: # the pid hash.
6410: #
6411: my $caller = getpeername($client);
6412: my ($port,$iaddr);
6413: if (defined($caller) && length($caller) > 0) {
6414: ($port,$iaddr)=unpack_sockaddr_in($caller);
6415: } else {
6416: &logthis("Unable to determine who caller was, getpeername returned nothing");
6417: }
6418: if (defined($iaddr)) {
6419: $clientip = inet_ntoa($iaddr);
6420: Debug("Connected with $clientip");
6421: } else {
6422: &logthis("Unable to determine clientip");
6423: $clientip='Unavailable';
6424: }
6425:
6426: if ($pid) {
6427: # Parent records the child's birth and returns.
6428: sigprocmask(SIG_UNBLOCK, $sigset)
6429: or die "Can't unblock SIGINT for fork: $!\n";
6430: $children{$pid} = $clientip;
6431: &status('Started child '.$pid);
1.462 foxr 6432: close($client);
1.212 foxr 6433: return;
6434: } else {
6435: # Child can *not* return from this subroutine.
6436: $SIG{INT} = 'DEFAULT'; # make SIGINT kill us as it did before
6437: $SIG{CHLD} = 'DEFAULT'; #make this default so that pwauth returns
6438: #don't get intercepted
6439: $SIG{USR1}= \&logstatus;
6440: $SIG{ALRM}= \&timeout;
1.467.2.2 raeburn 6441:
6442: #
6443: # Block sigpipe as it gets thrownon socket disconnect and we want to
6444: # deal with that as a read faiure instead.
6445: #
6446: my $blockset = POSIX::SigSet->new(SIGPIPE);
6447: sigprocmask(SIG_BLOCK, $blockset);
6448:
1.212 foxr 6449: $lastlog='Forked ';
6450: $status='Forked';
1.178 foxr 6451:
1.212 foxr 6452: # unblock signals
6453: sigprocmask(SIG_UNBLOCK, $sigset)
6454: or die "Can't unblock SIGINT for fork: $!\n";
1.178 foxr 6455:
1.212 foxr 6456: # my $tmpsnum=0; # Now global
6457: #---------------------------------------------------- kerberos 5 initialization
6458: &Authen::Krb5::init_context();
1.359 raeburn 6459: unless (($dist eq 'fedora5') || ($dist eq 'fedora4') ||
6460: ($dist eq 'fedora6') || ($dist eq 'suse9.3')) {
1.286 albertel 6461: &Authen::Krb5::init_ets();
6462: }
1.209 albertel 6463:
1.212 foxr 6464: &status('Accepted connection');
6465: # =============================================================================
6466: # do something with the connection
6467: # -----------------------------------------------------------------------------
6468: # see if we know client and 'check' for spoof IP by ineffective challenge
1.178 foxr 6469:
1.278 albertel 6470: my $outsideip=$clientip;
6471: if ($clientip eq '127.0.0.1') {
1.368 albertel 6472: $outsideip=&Apache::lonnet::get_host_ip($perlvar{'lonHostID'});
1.278 albertel 6473: }
1.412 foxr 6474: &ReadManagerTable();
1.368 albertel 6475: my $clientrec=defined(&Apache::lonnet::get_hosts_from_ip($outsideip));
1.278 albertel 6476: my $ismanager=($managers{$outsideip} ne undef);
1.432 raeburn 6477: $clientname = "[unknown]";
1.212 foxr 6478: if($clientrec) { # Establish client type.
6479: $ConnectionType = "client";
1.368 albertel 6480: $clientname = (&Apache::lonnet::get_hosts_from_ip($outsideip))[-1];
1.212 foxr 6481: if($ismanager) {
6482: $ConnectionType = "both";
6483: }
6484: } else {
6485: $ConnectionType = "manager";
1.278 albertel 6486: $clientname = $managers{$outsideip};
1.212 foxr 6487: }
6488: my $clientok;
1.178 foxr 6489:
1.212 foxr 6490: if ($clientrec || $ismanager) {
6491: &status("Waiting for init from $clientip $clientname");
6492: &logthis('<font color="yellow">INFO: Connection, '.
6493: $clientip.
6494: " ($clientname) connection type = $ConnectionType </font>" );
6495: &status("Connecting $clientip ($clientname))");
6496: my $remotereq=<$client>;
6497: chomp($remotereq);
6498: Debug("Got init: $remotereq");
1.337 albertel 6499:
1.212 foxr 6500: if ($remotereq =~ /^init/) {
6501: &sethost("sethost:$perlvar{'lonHostID'}");
6502: #
6503: # If the remote is attempting a local init... give that a try:
6504: #
1.432 raeburn 6505: (my $i, my $inittype, $clientversion) = split(/:/, $remotereq);
1.209 albertel 6506:
1.212 foxr 6507: # If the connection type is ssl, but I didn't get my
6508: # certificate files yet, then I'll drop back to
6509: # insecure (if allowed).
6510:
6511: if($inittype eq "ssl") {
6512: my ($ca, $cert) = lonssl::CertificateFile;
6513: my $kfile = lonssl::KeyFile;
6514: if((!$ca) ||
6515: (!$cert) ||
6516: (!$kfile)) {
6517: $inittype = ""; # This forces insecure attempt.
6518: &logthis("<font color=\"blue\"> Certificates not "
6519: ."installed -- trying insecure auth</font>");
1.224 foxr 6520: } else { # SSL certificates are in place so
1.212 foxr 6521: } # Leave the inittype alone.
6522: }
6523:
6524: if($inittype eq "local") {
1.432 raeburn 6525: $clientversion = $perlvar{'lonVersion'};
1.212 foxr 6526: my $key = LocalConnection($client, $remotereq);
6527: if($key) {
6528: Debug("Got local key $key");
6529: $clientok = 1;
6530: my $cipherkey = pack("H32", $key);
6531: $cipher = new IDEA($cipherkey);
6532: print $client "ok:local\n";
1.442 www 6533: &logthis('<font color="green">'
1.212 foxr 6534: . "Successful local authentication </font>");
6535: $keymode = "local"
1.178 foxr 6536: } else {
1.212 foxr 6537: Debug("Failed to get local key");
6538: $clientok = 0;
6539: shutdown($client, 3);
6540: close $client;
1.178 foxr 6541: }
1.212 foxr 6542: } elsif ($inittype eq "ssl") {
6543: my $key = SSLConnection($client);
6544: if ($key) {
6545: $clientok = 1;
6546: my $cipherkey = pack("H32", $key);
6547: $cipher = new IDEA($cipherkey);
6548: &logthis('<font color="green">'
6549: ."Successfull ssl authentication with $clientname </font>");
6550: $keymode = "ssl";
6551:
1.178 foxr 6552: } else {
1.212 foxr 6553: $clientok = 0;
6554: close $client;
1.178 foxr 6555: }
1.212 foxr 6556:
6557: } else {
6558: my $ok = InsecureConnection($client);
6559: if($ok) {
6560: $clientok = 1;
6561: &logthis('<font color="green">'
6562: ."Successful insecure authentication with $clientname </font>");
6563: print $client "ok\n";
6564: $keymode = "insecure";
1.178 foxr 6565: } else {
1.212 foxr 6566: &logthis('<font color="yellow">'
6567: ."Attempted insecure connection disallowed </font>");
6568: close $client;
6569: $clientok = 0;
1.178 foxr 6570:
6571: }
6572: }
1.212 foxr 6573: } else {
6574: &logthis(
6575: "<font color='blue'>WARNING: "
6576: ."$clientip failed to initialize: >$remotereq< </font>");
6577: &status('No init '.$clientip);
6578: }
6579:
6580: } else {
6581: &logthis(
6582: "<font color='blue'>WARNING: Unknown client $clientip</font>");
6583: &status('Hung up on '.$clientip);
6584: }
6585:
6586: if ($clientok) {
6587: # ---------------- New known client connecting, could mean machine online again
1.368 albertel 6588: if (&Apache::lonnet::get_host_ip($currenthostid) ne $clientip
1.367 albertel 6589: && $clientip ne '127.0.0.1') {
1.375 albertel 6590: &Apache::lonnet::reconlonc($clientname);
1.212 foxr 6591: }
6592: &logthis("<font color='green'>Established connection: $clientname</font>");
6593: &status('Will listen to '.$clientname);
6594: # ------------------------------------------------------------ Process requests
6595: my $keep_going = 1;
6596: my $user_input;
1.448 raeburn 6597: my $clienthost = &Apache::lonnet::hostname($clientname);
6598: my $clientserverhomeID = &Apache::lonnet::get_server_homeID($clienthost);
6599: $clienthomedom = &Apache::lonnet::host_domain($clientserverhomeID);
1.212 foxr 6600: while(($user_input = get_request) && $keep_going) {
6601: alarm(120);
6602: Debug("Main: Got $user_input\n");
6603: $keep_going = &process_request($user_input);
1.178 foxr 6604: alarm(0);
1.212 foxr 6605: &status('Listening to '.$clientname." ($keymode)");
1.161 foxr 6606: }
1.212 foxr 6607:
1.59 www 6608: # --------------------------------------------- client unknown or fishy, refuse
1.212 foxr 6609: } else {
1.161 foxr 6610: print $client "refused\n";
6611: $client->close();
1.190 albertel 6612: &logthis("<font color='blue'>WARNING: "
1.161 foxr 6613: ."Rejected client $clientip, closing connection</font>");
6614: }
1.212 foxr 6615: }
1.161 foxr 6616:
1.1 albertel 6617: # =============================================================================
1.161 foxr 6618:
1.190 albertel 6619: &logthis("<font color='red'>CRITICAL: "
1.161 foxr 6620: ."Disconnect from $clientip ($clientname)</font>");
6621:
6622:
6623: # this exit is VERY important, otherwise the child will become
6624: # a producer of more and more children, forking yourself into
6625: # process death.
6626: exit;
1.106 foxr 6627:
1.78 foxr 6628: }
1.261 foxr 6629: #
6630: # Determine if a user is an author for the indicated domain.
6631: #
6632: # Parameters:
6633: # domain - domain to check in .
6634: # user - Name of user to check.
6635: #
6636: # Return:
6637: # 1 - User is an author for domain.
6638: # 0 - User is not an author for domain.
6639: sub is_author {
6640: my ($domain, $user) = @_;
6641:
6642: &Debug("is_author: $user @ $domain");
6643:
6644: my $hashref = &tie_user_hash($domain, $user, "roles",
6645: &GDBM_READER());
6646:
6647: # Author role should show up as a key /domain/_au
1.78 foxr 6648:
1.321 albertel 6649: my $key = "/$domain/_au";
6650: my $value;
6651: if (defined($hashref)) {
6652: $value = $hashref->{$key};
6653: }
1.78 foxr 6654:
1.261 foxr 6655: if(defined($value)) {
6656: &Debug("$user @ $domain is an author");
6657: }
6658:
6659: return defined($value);
6660: }
1.78 foxr 6661: #
6662: # Checks to see if the input roleput request was to set
6663: # an author role. If so, invokes the lchtmldir script to set
6664: # up a correct public_html
6665: # Parameters:
6666: # request - The request sent to the rolesput subchunk.
6667: # We're looking for /domain/_au
6668: # domain - The domain in which the user is having roles doctored.
6669: # user - Name of the user for which the role is being put.
6670: # authtype - The authentication type associated with the user.
6671: #
1.289 albertel 6672: sub manage_permissions {
1.192 foxr 6673: my ($request, $domain, $user, $authtype) = @_;
1.78 foxr 6674:
1.261 foxr 6675: &Debug("manage_permissions: $request $domain $user $authtype");
6676:
1.78 foxr 6677: # See if the request is of the form /$domain/_au
1.289 albertel 6678: if($request =~ /^(\/\Q$domain\E\/_au)$/) { # It's an author rolesput...
1.78 foxr 6679: my $execdir = $perlvar{'lonDaemons'};
6680: my $userhome= "/home/$user" ;
1.134 albertel 6681: &logthis("system $execdir/lchtmldir $userhome $user $authtype");
1.261 foxr 6682: &Debug("Setting homedir permissions for $userhome");
1.78 foxr 6683: system("$execdir/lchtmldir $userhome $user $authtype");
6684: }
6685: }
1.222 foxr 6686:
6687:
6688: #
6689: # Return the full path of a user password file, whether it exists or not.
6690: # Parameters:
6691: # domain - Domain in which the password file lives.
6692: # user - name of the user.
6693: # Returns:
6694: # Full passwd path:
6695: #
6696: sub password_path {
6697: my ($domain, $user) = @_;
1.264 albertel 6698: return &propath($domain, $user).'/passwd';
1.222 foxr 6699: }
6700:
6701: # Password Filename
6702: # Returns the path to a passwd file given domain and user... only if
6703: # it exists.
6704: # Parameters:
6705: # domain - Domain in which to search.
6706: # user - username.
6707: # Returns:
6708: # - If the password file exists returns its path.
6709: # - If the password file does not exist, returns undefined.
6710: #
6711: sub password_filename {
6712: my ($domain, $user) = @_;
6713:
6714: Debug ("PasswordFilename called: dom = $domain user = $user");
6715:
6716: my $path = &password_path($domain, $user);
6717: Debug("PasswordFilename got path: $path");
6718: if(-e $path) {
6719: return $path;
6720: } else {
6721: return undef;
6722: }
6723: }
6724:
6725: #
6726: # Rewrite the contents of the user's passwd file.
6727: # Parameters:
6728: # domain - domain of the user.
6729: # name - User's name.
6730: # contents - New contents of the file.
6731: # Returns:
6732: # 0 - Failed.
6733: # 1 - Success.
6734: #
6735: sub rewrite_password_file {
6736: my ($domain, $user, $contents) = @_;
6737:
6738: my $file = &password_filename($domain, $user);
6739: if (defined $file) {
6740: my $pf = IO::File->new(">$file");
6741: if($pf) {
6742: print $pf "$contents\n";
6743: return 1;
6744: } else {
6745: return 0;
6746: }
6747: } else {
6748: return 0;
6749: }
6750:
6751: }
6752:
1.78 foxr 6753: #
1.222 foxr 6754: # get_auth_type - Determines the authorization type of a user in a domain.
1.78 foxr 6755:
6756: # Returns the authorization type or nouser if there is no such user.
6757: #
1.436 raeburn 6758: sub get_auth_type {
1.192 foxr 6759: my ($domain, $user) = @_;
1.78 foxr 6760:
1.222 foxr 6761: Debug("get_auth_type( $domain, $user ) \n");
1.78 foxr 6762: my $proname = &propath($domain, $user);
6763: my $passwdfile = "$proname/passwd";
6764: if( -e $passwdfile ) {
6765: my $pf = IO::File->new($passwdfile);
6766: my $realpassword = <$pf>;
6767: chomp($realpassword);
1.79 foxr 6768: Debug("Password info = $realpassword\n");
1.78 foxr 6769: my ($authtype, $contentpwd) = split(/:/, $realpassword);
1.79 foxr 6770: Debug("Authtype = $authtype, content = $contentpwd\n");
1.259 raeburn 6771: return "$authtype:$contentpwd";
1.224 foxr 6772: } else {
1.79 foxr 6773: Debug("Returning nouser");
1.78 foxr 6774: return "nouser";
6775: }
1.1 albertel 6776: }
6777:
1.220 foxr 6778: #
6779: # Validate a user given their domain, name and password. This utility
6780: # function is used by both AuthenticateHandler and ChangePasswordHandler
6781: # to validate the login credentials of a user.
6782: # Parameters:
6783: # $domain - The domain being logged into (this is required due to
6784: # the capability for multihomed systems.
6785: # $user - The name of the user being validated.
6786: # $password - The user's propoposed password.
6787: #
6788: # Returns:
6789: # 1 - The domain,user,pasword triplet corresponds to a valid
6790: # user.
6791: # 0 - The domain,user,password triplet is not a valid user.
6792: #
6793: sub validate_user {
1.396 raeburn 6794: my ($domain, $user, $password, $checkdefauth) = @_;
1.220 foxr 6795:
6796: # Why negative ~pi you may well ask? Well this function is about
6797: # authentication, and therefore very important to get right.
6798: # I've initialized the flag that determines whether or not I've
6799: # validated correctly to a value it's not supposed to get.
6800: # At the end of this function. I'll ensure that it's not still that
6801: # value so we don't just wind up returning some accidental value
6802: # as a result of executing an unforseen code path that
1.249 foxr 6803: # did not set $validated. At the end of valid execution paths,
6804: # validated shoule be 1 for success or 0 for failuer.
1.220 foxr 6805:
6806: my $validated = -3.14159;
6807:
6808: # How we authenticate is determined by the type of authentication
6809: # the user has been assigned. If the authentication type is
6810: # "nouser", the user does not exist so we will return 0.
6811:
1.222 foxr 6812: my $contents = &get_auth_type($domain, $user);
1.220 foxr 6813: my ($howpwd, $contentpwd) = split(/:/, $contents);
6814:
6815: my $null = pack("C",0); # Used by kerberos auth types.
6816:
1.395 raeburn 6817: if ($howpwd eq 'nouser') {
1.396 raeburn 6818: if ($checkdefauth) {
6819: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
6820: if ($domdefaults{'auth_def'} eq 'localauth') {
6821: $howpwd = $domdefaults{'auth_def'};
6822: $contentpwd = $domdefaults{'auth_arg_def'};
6823: } elsif ((($domdefaults{'auth_def'} eq 'krb4') ||
6824: ($domdefaults{'auth_def'} eq 'krb5')) &&
6825: ($domdefaults{'auth_arg_def'} ne '')) {
6826: $howpwd = $domdefaults{'auth_def'};
6827: $contentpwd = $domdefaults{'auth_arg_def'};
6828: }
1.395 raeburn 6829: }
6830: }
1.220 foxr 6831: if ($howpwd ne 'nouser') {
6832: if($howpwd eq "internal") { # Encrypted is in local password file.
6833: $validated = (crypt($password, $contentpwd) eq $contentpwd);
6834: }
6835: elsif ($howpwd eq "unix") { # User is a normal unix user.
6836: $contentpwd = (getpwnam($user))[1];
6837: if($contentpwd) {
6838: if($contentpwd eq 'x') { # Shadow password file...
6839: my $pwauth_path = "/usr/local/sbin/pwauth";
6840: open PWAUTH, "|$pwauth_path" or
6841: die "Cannot invoke authentication";
6842: print PWAUTH "$user\n$password\n";
6843: close PWAUTH;
6844: $validated = ! $?;
6845:
6846: } else { # Passwords in /etc/passwd.
6847: $validated = (crypt($password,
6848: $contentpwd) eq $contentpwd);
6849: }
6850: } else {
6851: $validated = 0;
6852: }
1.439 raeburn 6853: } elsif ($howpwd eq "krb4") { # user is in kerberos 4 auth. domain.
6854: my $checkwithkrb5 = 0;
6855: if ($dist =~/^fedora(\d+)$/) {
6856: if ($1 > 11) {
6857: $checkwithkrb5 = 1;
6858: }
6859: } elsif ($dist =~ /^suse([\d.]+)$/) {
6860: if ($1 > 11.1) {
6861: $checkwithkrb5 = 1;
6862: }
6863: }
6864: if ($checkwithkrb5) {
6865: $validated = &krb5_authen($password,$null,$user,$contentpwd);
6866: } else {
6867: $validated = &krb4_authen($password,$null,$user,$contentpwd);
6868: }
1.224 foxr 6869: } elsif ($howpwd eq "krb5") { # User is in kerberos 5 auth. domain.
1.439 raeburn 6870: $validated = &krb5_authen($password,$null,$user,$contentpwd);
1.224 foxr 6871: } elsif ($howpwd eq "localauth") {
1.220 foxr 6872: # Authenticate via installation specific authentcation method:
6873: $validated = &localauth::localauth($user,
6874: $password,
1.353 albertel 6875: $contentpwd,
6876: $domain);
1.358 albertel 6877: if ($validated < 0) {
1.357 albertel 6878: &logthis("localauth for $contentpwd $user:$domain returned a $validated");
6879: $validated = 0;
6880: }
1.224 foxr 6881: } else { # Unrecognized auth is also bad.
1.220 foxr 6882: $validated = 0;
6883: }
6884: } else {
6885: $validated = 0;
6886: }
6887: #
6888: # $validated has the correct stat of the authentication:
6889: #
6890:
6891: unless ($validated != -3.14159) {
1.249 foxr 6892: # I >really really< want to know if this happens.
6893: # since it indicates that user authentication is badly
6894: # broken in some code path.
6895: #
6896: die "ValidateUser - failed to set the value of validated $domain, $user $password";
1.220 foxr 6897: }
6898: return $validated;
6899: }
6900:
1.439 raeburn 6901: sub krb4_authen {
6902: my ($password,$null,$user,$contentpwd) = @_;
6903: my $validated = 0;
6904: if (!($password =~ /$null/) ) { # Null password not allowed.
6905: eval {
6906: require Authen::Krb4;
6907: };
6908: if (!$@) {
6909: my $k4error = &Authen::Krb4::get_pw_in_tkt($user,
6910: "",
6911: $contentpwd,,
6912: 'krbtgt',
6913: $contentpwd,
6914: 1,
6915: $password);
6916: if(!$k4error) {
6917: $validated = 1;
6918: } else {
6919: $validated = 0;
6920: &logthis('krb4: '.$user.', '.$contentpwd.', '.
6921: &Authen::Krb4::get_err_txt($Authen::Krb4::error));
6922: }
6923: } else {
6924: $validated = krb5_authen($password,$null,$user,$contentpwd);
6925: }
6926: }
6927: return $validated;
6928: }
6929:
6930: sub krb5_authen {
6931: my ($password,$null,$user,$contentpwd) = @_;
6932: my $validated = 0;
6933: if(!($password =~ /$null/)) { # Null password not allowed.
6934: my $krbclient = &Authen::Krb5::parse_name($user.'@'
6935: .$contentpwd);
6936: my $krbservice = "krbtgt/".$contentpwd."\@".$contentpwd;
6937: my $krbserver = &Authen::Krb5::parse_name($krbservice);
6938: my $credentials= &Authen::Krb5::cc_default();
6939: $credentials->initialize(&Authen::Krb5::parse_name($user.'@'
6940: .$contentpwd));
6941: my $krbreturn;
6942: if (exists(&Authen::Krb5::get_init_creds_password)) {
6943: $krbreturn =
6944: &Authen::Krb5::get_init_creds_password($krbclient,$password,
6945: $krbservice);
6946: $validated = (ref($krbreturn) eq 'Authen::Krb5::Creds');
6947: } else {
6948: $krbreturn =
6949: &Authen::Krb5::get_in_tkt_with_password($krbclient,$krbserver,
6950: $password,$credentials);
6951: $validated = ($krbreturn == 1);
6952: }
6953: if (!$validated) {
6954: &logthis('krb5: '.$user.', '.$contentpwd.', '.
6955: &Authen::Krb5::error());
6956: }
6957: }
6958: return $validated;
6959: }
1.220 foxr 6960:
1.84 albertel 6961: sub addline {
6962: my ($fname,$hostid,$ip,$newline)=@_;
6963: my $contents;
6964: my $found=0;
1.355 albertel 6965: my $expr='^'.quotemeta($hostid).':'.quotemeta($ip).':';
1.134 albertel 6966: my $sh;
1.84 albertel 6967: if ($sh=IO::File->new("$fname.subscription")) {
6968: while (my $subline=<$sh>) {
6969: if ($subline !~ /$expr/) {$contents.= $subline;} else {$found=1;}
6970: }
6971: $sh->close();
6972: }
6973: $sh=IO::File->new(">$fname.subscription");
6974: if ($contents) { print $sh $contents; }
6975: if ($newline) { print $sh $newline; }
6976: $sh->close();
6977: return $found;
1.86 www 6978: }
6979:
1.234 foxr 6980: sub get_chat {
1.324 raeburn 6981: my ($cdom,$cname,$udom,$uname,$group)=@_;
1.310 albertel 6982:
1.87 www 6983: my @entries=();
1.324 raeburn 6984: my $namespace = 'nohist_chatroom';
6985: my $namespace_inroom = 'nohist_inchatroom';
1.335 albertel 6986: if ($group ne '') {
1.324 raeburn 6987: $namespace .= '_'.$group;
6988: $namespace_inroom .= '_'.$group;
6989: }
6990: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 6991: &GDBM_READER());
6992: if ($hashref) {
6993: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.311 albertel 6994: &untie_user_hash($hashref);
1.123 www 6995: }
1.124 www 6996: my @participants=();
1.134 albertel 6997: my $cutoff=time-60;
1.324 raeburn 6998: $hashref = &tie_user_hash($cdom, $cname, $namespace_inroom,
1.310 albertel 6999: &GDBM_WRCREAT());
7000: if ($hashref) {
7001: $hashref->{$uname.':'.$udom}=time;
7002: foreach my $user (sort(keys(%$hashref))) {
7003: if ($hashref->{$user}>$cutoff) {
7004: push(@participants, 'active_participant:'.$user);
1.123 www 7005: }
7006: }
1.311 albertel 7007: &untie_user_hash($hashref);
1.86 www 7008: }
1.124 www 7009: return (@participants,@entries);
1.86 www 7010: }
7011:
1.234 foxr 7012: sub chat_add {
1.324 raeburn 7013: my ($cdom,$cname,$newchat,$group)=@_;
1.88 albertel 7014: my @entries=();
1.142 www 7015: my $time=time;
1.324 raeburn 7016: my $namespace = 'nohist_chatroom';
7017: my $logfile = 'chatroom.log';
1.335 albertel 7018: if ($group ne '') {
1.324 raeburn 7019: $namespace .= '_'.$group;
7020: $logfile = 'chatroom_'.$group.'.log';
7021: }
7022: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 7023: &GDBM_WRCREAT());
7024: if ($hashref) {
7025: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.88 albertel 7026: my ($lastid)=($entries[$#entries]=~/^(\w+)\:/);
7027: my ($thentime,$idnum)=split(/\_/,$lastid);
7028: my $newid=$time.'_000000';
7029: if ($thentime==$time) {
7030: $idnum=~s/^0+//;
7031: $idnum++;
7032: $idnum=substr('000000'.$idnum,-6,6);
7033: $newid=$time.'_'.$idnum;
7034: }
1.310 albertel 7035: $hashref->{$newid}=$newchat;
1.88 albertel 7036: my $expired=$time-3600;
1.310 albertel 7037: foreach my $comment (keys(%$hashref)) {
7038: my ($thistime) = ($comment=~/(\d+)\_/);
1.88 albertel 7039: if ($thistime<$expired) {
1.310 albertel 7040: delete $hashref->{$comment};
1.88 albertel 7041: }
7042: }
1.310 albertel 7043: {
7044: my $proname=&propath($cdom,$cname);
1.324 raeburn 7045: if (open(CHATLOG,">>$proname/$logfile")) {
1.310 albertel 7046: print CHATLOG ("$time:".&unescape($newchat)."\n");
7047: }
7048: close(CHATLOG);
1.142 www 7049: }
1.311 albertel 7050: &untie_user_hash($hashref);
1.86 www 7051: }
1.84 albertel 7052: }
7053:
7054: sub unsub {
7055: my ($fname,$clientip)=@_;
7056: my $result;
1.188 foxr 7057: my $unsubs = 0; # Number of successful unsubscribes:
7058:
7059:
7060: # An old way subscriptions were handled was to have a
7061: # subscription marker file:
7062:
7063: Debug("Attempting unlink of $fname.$clientname");
1.161 foxr 7064: if (unlink("$fname.$clientname")) {
1.188 foxr 7065: $unsubs++; # Successful unsub via marker file.
7066: }
7067:
7068: # The more modern way to do it is to have a subscription list
7069: # file:
7070:
1.84 albertel 7071: if (-e "$fname.subscription") {
1.161 foxr 7072: my $found=&addline($fname,$clientname,$clientip,'');
1.188 foxr 7073: if ($found) {
7074: $unsubs++;
7075: }
7076: }
7077:
7078: # If either or both of these mechanisms succeeded in unsubscribing a
7079: # resource we can return ok:
7080:
7081: if($unsubs) {
7082: $result = "ok\n";
1.84 albertel 7083: } else {
1.188 foxr 7084: $result = "not_subscribed\n";
1.84 albertel 7085: }
1.188 foxr 7086:
1.84 albertel 7087: return $result;
7088: }
7089:
1.101 www 7090: sub currentversion {
7091: my $fname=shift;
7092: my $version=-1;
7093: my $ulsdir='';
7094: if ($fname=~/^(.+)\/[^\/]+$/) {
7095: $ulsdir=$1;
7096: }
1.114 albertel 7097: my ($fnamere1,$fnamere2);
7098: # remove version if already specified
1.101 www 7099: $fname=~s/\.\d+\.(\w+(?:\.meta)*)$/\.$1/;
1.114 albertel 7100: # get the bits that go before and after the version number
7101: if ( $fname=~/^(.*\.)(\w+(?:\.meta)*)$/ ) {
7102: $fnamere1=$1;
7103: $fnamere2='.'.$2;
7104: }
1.101 www 7105: if (-e $fname) { $version=1; }
7106: if (-e $ulsdir) {
1.134 albertel 7107: if(-d $ulsdir) {
7108: if (opendir(LSDIR,$ulsdir)) {
7109: my $ulsfn;
7110: while ($ulsfn=readdir(LSDIR)) {
1.101 www 7111: # see if this is a regular file (ignore links produced earlier)
1.134 albertel 7112: my $thisfile=$ulsdir.'/'.$ulsfn;
7113: unless (-l $thisfile) {
1.160 www 7114: if ($thisfile=~/\Q$fnamere1\E(\d+)\Q$fnamere2\E$/) {
1.134 albertel 7115: if ($1>$version) { $version=$1; }
7116: }
7117: }
7118: }
7119: closedir(LSDIR);
7120: $version++;
7121: }
7122: }
7123: }
7124: return $version;
1.101 www 7125: }
7126:
7127: sub thisversion {
7128: my $fname=shift;
7129: my $version=-1;
7130: if ($fname=~/\.(\d+)\.\w+(?:\.meta)*$/) {
7131: $version=$1;
7132: }
7133: return $version;
7134: }
7135:
1.84 albertel 7136: sub subscribe {
7137: my ($userinput,$clientip)=@_;
7138: my $result;
1.293 albertel 7139: my ($cmd,$fname)=split(/:/,$userinput,2);
1.84 albertel 7140: my $ownership=&ishome($fname);
7141: if ($ownership eq 'owner') {
1.101 www 7142: # explitly asking for the current version?
7143: unless (-e $fname) {
7144: my $currentversion=¤tversion($fname);
7145: if (&thisversion($fname)==$currentversion) {
7146: if ($fname=~/^(.+)\.\d+\.(\w+(?:\.meta)*)$/) {
7147: my $root=$1;
7148: my $extension=$2;
7149: symlink($root.'.'.$extension,
7150: $root.'.'.$currentversion.'.'.$extension);
1.102 www 7151: unless ($extension=~/\.meta$/) {
7152: symlink($root.'.'.$extension.'.meta',
7153: $root.'.'.$currentversion.'.'.$extension.'.meta');
7154: }
1.101 www 7155: }
7156: }
7157: }
1.84 albertel 7158: if (-e $fname) {
7159: if (-d $fname) {
7160: $result="directory\n";
7161: } else {
1.161 foxr 7162: if (-e "$fname.$clientname") {&unsub($fname,$clientip);}
1.134 albertel 7163: my $now=time;
1.161 foxr 7164: my $found=&addline($fname,$clientname,$clientip,
7165: "$clientname:$clientip:$now\n");
1.84 albertel 7166: if ($found) { $result="$fname\n"; }
7167: # if they were subscribed to only meta data, delete that
7168: # subscription, when you subscribe to a file you also get
7169: # the metadata
7170: unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); }
7171: $fname=~s/\/home\/httpd\/html\/res/raw/;
1.467.2.5 raeburn 7172: my $protocol = $Apache::lonnet::protocol{$perlvar{'lonHostID'}};
7173: $protocol = 'http' if ($protocol ne 'https');
7174: $fname=$protocol.'://'.&Apache::lonnet::hostname($perlvar{'lonHostID'})."/".$fname;
1.84 albertel 7175: $result="$fname\n";
7176: }
7177: } else {
7178: $result="not_found\n";
7179: }
7180: } else {
7181: $result="rejected\n";
7182: }
7183: return $result;
7184: }
1.287 foxr 7185: # Change the passwd of a unix user. The caller must have
7186: # first verified that the user is a loncapa user.
7187: #
7188: # Parameters:
7189: # user - Unix user name to change.
7190: # pass - New password for the user.
7191: # Returns:
7192: # ok - if success
7193: # other - Some meaningfule error message string.
7194: # NOTE:
7195: # invokes a setuid script to change the passwd.
7196: sub change_unix_password {
7197: my ($user, $pass) = @_;
7198:
7199: &Debug("change_unix_password");
7200: my $execdir=$perlvar{'lonDaemons'};
7201: &Debug("Opening lcpasswd pipeline");
7202: my $pf = IO::File->new("|$execdir/lcpasswd > "
7203: ."$perlvar{'lonDaemons'}"
7204: ."/logs/lcpasswd.log");
7205: print $pf "$user\n$pass\n$pass\n";
7206: close $pf;
7207: my $err = $?;
7208: return ($err < @passwderrors) ? $passwderrors[$err] :
7209: "pwchange_falure - unknown error";
7210:
7211:
7212: }
7213:
1.91 albertel 7214:
7215: sub make_passwd_file {
1.98 foxr 7216: my ($uname, $umode,$npass,$passfilename)=@_;
1.390 raeburn 7217: my $result="ok";
1.91 albertel 7218: if ($umode eq 'krb4' or $umode eq 'krb5') {
7219: {
7220: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7221: if ($pf) {
7222: print $pf "$umode:$npass\n";
7223: } else {
7224: $result = "pass_file_failed_error";
7225: }
1.91 albertel 7226: }
7227: } elsif ($umode eq 'internal') {
7228: my $salt=time;
7229: $salt=substr($salt,6,2);
7230: my $ncpass=crypt($npass,$salt);
7231: {
7232: &Debug("Creating internal auth");
7233: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7234: if($pf) {
7235: print $pf "internal:$ncpass\n";
7236: } else {
7237: $result = "pass_file_failed_error";
7238: }
1.91 albertel 7239: }
7240: } elsif ($umode eq 'localauth') {
7241: {
7242: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7243: if($pf) {
7244: print $pf "localauth:$npass\n";
7245: } else {
7246: $result = "pass_file_failed_error";
7247: }
1.91 albertel 7248: }
7249: } elsif ($umode eq 'unix') {
7250: {
1.186 foxr 7251: #
7252: # Don't allow the creation of privileged accounts!!! that would
7253: # be real bad!!!
7254: #
7255: my $uid = getpwnam($uname);
7256: if((defined $uid) && ($uid == 0)) {
7257: &logthis(">>>Attempted to create privilged account blocked");
7258: return "no_priv_account_error\n";
7259: }
7260:
1.223 foxr 7261: my $execpath ="$perlvar{'lonDaemons'}/"."lcuseradd";
1.224 foxr 7262:
7263: my $lc_error_file = $execdir."/tmp/lcuseradd".$$.".status";
1.91 albertel 7264: {
7265: &Debug("Executing external: ".$execpath);
1.98 foxr 7266: &Debug("user = ".$uname.", Password =". $npass);
1.132 matthew 7267: my $se = IO::File->new("|$execpath > $perlvar{'lonDaemons'}/logs/lcuseradd.log");
1.91 albertel 7268: print $se "$uname\n";
7269: print $se "$npass\n";
7270: print $se "$npass\n";
1.223 foxr 7271: print $se "$lc_error_file\n"; # Status -> unique file.
1.97 foxr 7272: }
1.285 foxr 7273: if (-r $lc_error_file) {
7274: &Debug("Opening error file: $lc_error_file");
7275: my $error = IO::File->new("< $lc_error_file");
7276: my $useraddok = <$error>;
7277: $error->close;
7278: unlink($lc_error_file);
7279:
7280: chomp $useraddok;
7281:
7282: if($useraddok > 0) {
7283: my $error_text = &lcuseraddstrerror($useraddok);
7284: &logthis("Failed lcuseradd: $error_text");
1.390 raeburn 7285: $result = "lcuseradd_failed:$error_text";
1.285 foxr 7286: } else {
7287: my $pf = IO::File->new(">$passfilename");
7288: if($pf) {
7289: print $pf "unix:\n";
7290: } else {
7291: $result = "pass_file_failed_error";
7292: }
7293: }
1.224 foxr 7294: } else {
1.285 foxr 7295: &Debug("Could not locate lcuseradd error: $lc_error_file");
7296: $result="bug_lcuseradd_no_output_file";
1.91 albertel 7297: }
7298: }
7299: } elsif ($umode eq 'none') {
7300: {
1.223 foxr 7301: my $pf = IO::File->new("> $passfilename");
1.261 foxr 7302: if($pf) {
7303: print $pf "none:\n";
7304: } else {
7305: $result = "pass_file_failed_error";
7306: }
1.91 albertel 7307: }
7308: } else {
1.390 raeburn 7309: $result="auth_mode_error";
1.91 albertel 7310: }
7311: return $result;
1.121 albertel 7312: }
7313:
1.265 albertel 7314: sub convert_photo {
7315: my ($start,$dest)=@_;
7316: system("convert $start $dest");
7317: }
7318:
1.121 albertel 7319: sub sethost {
7320: my ($remotereq) = @_;
7321: my (undef,$hostid)=split(/:/,$remotereq);
1.322 albertel 7322: # ignore sethost if we are already correct
7323: if ($hostid eq $currenthostid) {
7324: return 'ok';
7325: }
7326:
1.121 albertel 7327: if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; }
1.368 albertel 7328: if (&Apache::lonnet::get_host_ip($perlvar{'lonHostID'})
7329: eq &Apache::lonnet::get_host_ip($hostid)) {
1.200 matthew 7330: $currenthostid =$hostid;
1.369 albertel 7331: $currentdomainid=&Apache::lonnet::host_domain($hostid);
1.443 www 7332: # &logthis("Setting hostid to $hostid, and domain to $currentdomainid");
1.121 albertel 7333: } else {
7334: &logthis("Requested host id $hostid not an alias of ".
7335: $perlvar{'lonHostID'}." refusing connection");
7336: return 'unable_to_set';
7337: }
7338: return 'ok';
7339: }
7340:
7341: sub version {
7342: my ($userinput)=@_;
7343: $remoteVERSION=(split(/:/,$userinput))[1];
7344: return "version:$VERSION";
1.127 albertel 7345: }
1.178 foxr 7346:
1.447 raeburn 7347: sub get_usersession_config {
7348: my ($dom,$name) = @_;
7349: my ($usersessionconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
7350: if (defined($cached)) {
7351: return $usersessionconf;
7352: } else {
7353: my %domconfig = &Apache::lonnet::get_dom('configuration',['usersessions'],$dom);
7354: if (ref($domconfig{'usersessions'}) eq 'HASH') {
7355: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'usersessions'},3600);
7356: return $domconfig{'usersessions'};
7357: }
7358: }
7359: return;
7360: }
1.200 matthew 7361:
1.453 raeburn 7362: sub releasereqd_check {
1.457 raeburn 7363: my ($cnum,$cdom,$key,$value,$major,$minor,$homecourses,$ids) = @_;
1.453 raeburn 7364: my $home = &Apache::lonnet::homeserver($cnum,$cdom);
7365: return if ($home eq 'no_host');
7366: my ($reqdmajor,$reqdminor,$displayrole);
7367: if ($cnum =~ /$LONCAPA::match_community/) {
7368: if ($major eq '' && $minor eq '') {
7369: return unless ((ref($ids) eq 'ARRAY') &&
7370: (grep(/^\Q$home\E$/,@{$ids})));
7371: } else {
7372: $reqdmajor = 2;
7373: $reqdminor = 9;
7374: return unless (&useable_role($reqdmajor,$reqdminor,$major,$minor));
7375: }
7376: }
1.457 raeburn 7377: my $hashid = $cdom.':'.$cnum;
7378: my ($courseinfo,$cached) =
7379: &Apache::lonnet::is_cached_new('courseinfo',$hashid);
7380: if (defined($cached)) {
7381: if (ref($courseinfo) eq 'HASH') {
7382: if (exists($courseinfo->{'releaserequired'})) {
7383: my ($reqdmajor,$reqdminor) = split(/\./,$courseinfo->{'releaserequired'});
7384: return unless (&useable_role($reqdmajor,$reqdminor,$major,$minor));
1.453 raeburn 7385: }
1.457 raeburn 7386: }
7387: } else {
7388: if (ref($ids) eq 'ARRAY') {
7389: if (grep(/^\Q$home\E$/,@{$ids})) {
7390: if (ref($homecourses) eq 'HASH') {
7391: if (ref($homecourses->{$hashid}) eq 'ARRAY') {
7392: push(@{$homecourses->{$hashid}},{$key=>$value});
7393: } else {
7394: $homecourses->{$hashid} = [{$key=>$value}];
1.453 raeburn 7395: }
7396: }
1.457 raeburn 7397: return;
1.453 raeburn 7398: }
1.457 raeburn 7399: }
7400: my $courseinfo = &get_courseinfo_hash($cnum,$cdom,$home);
7401: if (ref($courseinfo) eq 'HASH') {
7402: if (exists($courseinfo->{'releaserequired'})) {
7403: my ($reqdmajor,$reqdminor) = split(/\./,$courseinfo->{'releaserequired'});
7404: return unless (&useable_role($reqdmajor,$reqdminor,$major,$minor));
1.453 raeburn 7405: }
1.466 raeburn 7406: } else {
7407: return;
1.453 raeburn 7408: }
7409: }
7410: return 1;
7411: }
7412:
1.450 raeburn 7413: sub get_courseinfo_hash {
7414: my ($cnum,$cdom,$home) = @_;
1.466 raeburn 7415: my %info;
7416: eval {
7417: local($SIG{ALRM}) = sub { die "timeout\n"; };
7418: local($SIG{__DIE__})='DEFAULT';
7419: alarm(3);
7420: %info = &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,1,[$home],'.');
7421: alarm(0);
7422: };
7423: if ($@) {
7424: if ($@ eq "timeout\n") {
7425: &logthis("<font color='blue'>WARNING courseiddump for $cnum:$cdom from $home timedout</font>");
7426: } else {
7427: &logthis("<font color='yellow'>WARNING unexpected error during eval of call for courseiddump from $home</font>");
7428: }
7429: } else {
7430: if (ref($info{$cdom.'_'.$cnum}) eq 'HASH') {
7431: my $hashid = $cdom.':'.$cnum;
7432: return &Apache::lonnet::do_cache_new('courseinfo',$hashid,$info{$cdom.'_'.$cnum},600);
7433: }
1.453 raeburn 7434: }
7435: return;
7436: }
7437:
7438: sub check_homecourses {
7439: my ($homecourses,$udom,$regexp,$count,$range,$start,$end,$major,$minor) = @_;
7440: my ($result,%addtocache);
1.459 raeburn 7441: my $yesterday = time - 24*3600;
1.453 raeburn 7442: if (ref($homecourses) eq 'HASH') {
1.459 raeburn 7443: my (%okcourses,%courseinfo,%recent);
1.453 raeburn 7444: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
7445: if ($hashref) {
7446: while (my ($key,$value) = each(%$hashref)) {
7447: my $unesc_key = &unescape($key);
1.459 raeburn 7448: if ($unesc_key =~ /^lasttime:(\w+)$/) {
7449: my $cid = $1;
7450: $cid =~ s/_/:/;
7451: if ($value > $yesterday ) {
7452: $recent{$cid} = 1;
7453: }
7454: next;
7455: }
1.453 raeburn 7456: my $items = &Apache::lonnet::thaw_unescape($value);
7457: if (ref($items) eq 'HASH') {
7458: my $hashid = $unesc_key;
7459: $hashid =~ s/_/:/;
1.459 raeburn 7460: $courseinfo{$hashid} = $items;
1.453 raeburn 7461: if (ref($homecourses->{$hashid}) eq 'ARRAY') {
7462: my ($reqdmajor,$reqdminor) = split(/\./,$items->{'releaserequired'});
7463: if (&useable_role($reqdmajor,$reqdminor,$major,$minor)) {
7464: $okcourses{$hashid} = 1;
7465: }
7466: }
7467: }
7468: }
7469: unless (&untie_domain_hash($hashref)) {
7470: &logthis('Failed to untie tied hash for nohist_courseids.db');
7471: }
7472: } else {
7473: &logthis('Failed to tie hash for nohist_courseids.db');
7474: return;
7475: }
1.459 raeburn 7476: foreach my $hashid (keys(%recent)) {
1.465 raeburn 7477: my ($result,$cached)=&Apache::lonnet::is_cached_new('courseinfo',$hashid);
1.464 raeburn 7478: unless ($cached) {
7479: &Apache::lonnet::do_cache_new('courseinfo',$hashid,$courseinfo{$hashid},600);
7480: }
1.459 raeburn 7481: }
7482: foreach my $hashid (keys(%{$homecourses})) {
7483: next if ($recent{$hashid});
7484: &Apache::lonnet::do_cache_new('courseinfo',$hashid,$courseinfo{$hashid},600);
7485: }
1.453 raeburn 7486: foreach my $hashid (keys(%okcourses)) {
7487: if (ref($homecourses->{$hashid}) eq 'ARRAY') {
7488: foreach my $role (@{$homecourses->{$hashid}}) {
7489: if (ref($role) eq 'HASH') {
7490: while (my ($key,$value) = each(%{$role})) {
7491: if ($regexp eq '.') {
7492: $count++;
7493: if (defined($range) && $count >= $end) { last; }
7494: if (defined($range) && $count < $start) { next; }
7495: $result.=$key.'='.$value.'&';
7496: } else {
7497: my $unescapeKey = &unescape($key);
7498: if (eval('$unescapeKey=~/$regexp/')) {
7499: $count++;
7500: if (defined($range) && $count >= $end) { last; }
7501: if (defined($range) && $count < $start) { next; }
7502: $result.="$key=$value&";
7503: }
7504: }
7505: }
7506: }
7507: }
7508: }
1.450 raeburn 7509: }
7510: }
1.453 raeburn 7511: return $result;
7512: }
7513:
7514: sub useable_role {
7515: my ($reqdmajor,$reqdminor,$major,$minor) = @_;
7516: if ($reqdmajor ne '' && $reqdminor ne '') {
7517: return if (($major eq '' && $minor eq '') ||
7518: ($major < $reqdmajor) ||
7519: (($major == $reqdmajor) && ($minor < $reqdminor)));
7520: }
7521: return 1;
1.450 raeburn 7522: }
7523:
1.467.2.3 raeburn 7524: sub distro_and_arch {
7525: return $dist.':'.$arch;
7526: }
7527:
1.61 harris41 7528: # ----------------------------------- POD (plain old documentation, CPAN style)
7529:
7530: =head1 NAME
7531:
7532: lond - "LON Daemon" Server (port "LOND" 5663)
7533:
7534: =head1 SYNOPSIS
7535:
1.74 harris41 7536: Usage: B<lond>
7537:
7538: Should only be run as user=www. This is a command-line script which
7539: is invoked by B<loncron>. There is no expectation that a typical user
7540: will manually start B<lond> from the command-line. (In other words,
7541: DO NOT START B<lond> YOURSELF.)
1.61 harris41 7542:
7543: =head1 DESCRIPTION
7544:
1.74 harris41 7545: There are two characteristics associated with the running of B<lond>,
7546: PROCESS MANAGEMENT (starting, stopping, handling child processes)
7547: and SERVER-SIDE ACTIVITIES (password authentication, user creation,
7548: subscriptions, etc). These are described in two large
7549: sections below.
7550:
7551: B<PROCESS MANAGEMENT>
7552:
1.61 harris41 7553: Preforker - server who forks first. Runs as a daemon. HUPs.
7554: Uses IDEA encryption
7555:
1.74 harris41 7556: B<lond> forks off children processes that correspond to the other servers
7557: in the network. Management of these processes can be done at the
7558: parent process level or the child process level.
7559:
7560: B<logs/lond.log> is the location of log messages.
7561:
7562: The process management is now explained in terms of linux shell commands,
7563: subroutines internal to this code, and signal assignments:
7564:
7565: =over 4
7566:
7567: =item *
7568:
7569: PID is stored in B<logs/lond.pid>
7570:
7571: This is the process id number of the parent B<lond> process.
7572:
7573: =item *
7574:
7575: SIGTERM and SIGINT
7576:
7577: Parent signal assignment:
7578: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
7579:
7580: Child signal assignment:
7581: $SIG{INT} = 'DEFAULT'; (and SIGTERM is DEFAULT also)
7582: (The child dies and a SIGALRM is sent to parent, awaking parent from slumber
7583: to restart a new child.)
7584:
7585: Command-line invocations:
7586: B<kill> B<-s> SIGTERM I<PID>
7587: B<kill> B<-s> SIGINT I<PID>
7588:
7589: Subroutine B<HUNTSMAN>:
7590: This is only invoked for the B<lond> parent I<PID>.
7591: This kills all the children, and then the parent.
7592: The B<lonc.pid> file is cleared.
7593:
7594: =item *
7595:
7596: SIGHUP
7597:
7598: Current bug:
7599: This signal can only be processed the first time
7600: on the parent process. Subsequent SIGHUP signals
7601: have no effect.
7602:
7603: Parent signal assignment:
7604: $SIG{HUP} = \&HUPSMAN;
7605:
7606: Child signal assignment:
7607: none (nothing happens)
7608:
7609: Command-line invocations:
7610: B<kill> B<-s> SIGHUP I<PID>
7611:
7612: Subroutine B<HUPSMAN>:
7613: This is only invoked for the B<lond> parent I<PID>,
7614: This kills all the children, and then the parent.
7615: The B<lond.pid> file is cleared.
7616:
7617: =item *
7618:
7619: SIGUSR1
7620:
7621: Parent signal assignment:
7622: $SIG{USR1} = \&USRMAN;
7623:
7624: Child signal assignment:
7625: $SIG{USR1}= \&logstatus;
7626:
7627: Command-line invocations:
7628: B<kill> B<-s> SIGUSR1 I<PID>
7629:
7630: Subroutine B<USRMAN>:
7631: When invoked for the B<lond> parent I<PID>,
7632: SIGUSR1 is sent to all the children, and the status of
7633: each connection is logged.
1.144 foxr 7634:
7635: =item *
7636:
7637: SIGUSR2
7638:
7639: Parent Signal assignment:
7640: $SIG{USR2} = \&UpdateHosts
7641:
7642: Child signal assignment:
7643: NONE
7644:
1.74 harris41 7645:
7646: =item *
7647:
7648: SIGCHLD
7649:
7650: Parent signal assignment:
7651: $SIG{CHLD} = \&REAPER;
7652:
7653: Child signal assignment:
7654: none
7655:
7656: Command-line invocations:
7657: B<kill> B<-s> SIGCHLD I<PID>
7658:
7659: Subroutine B<REAPER>:
7660: This is only invoked for the B<lond> parent I<PID>.
7661: Information pertaining to the child is removed.
7662: The socket port is cleaned up.
7663:
7664: =back
7665:
7666: B<SERVER-SIDE ACTIVITIES>
7667:
7668: Server-side information can be accepted in an encrypted or non-encrypted
7669: method.
7670:
7671: =over 4
7672:
7673: =item ping
7674:
7675: Query a client in the hosts.tab table; "Are you there?"
7676:
7677: =item pong
7678:
7679: Respond to a ping query.
7680:
7681: =item ekey
7682:
7683: Read in encrypted key, make cipher. Respond with a buildkey.
7684:
7685: =item load
7686:
7687: Respond with CPU load based on a computation upon /proc/loadavg.
7688:
7689: =item currentauth
7690:
7691: Reply with current authentication information (only over an
7692: encrypted channel).
7693:
7694: =item auth
7695:
7696: Only over an encrypted channel, reply as to whether a user's
7697: authentication information can be validated.
7698:
7699: =item passwd
7700:
7701: Allow for a password to be set.
7702:
7703: =item makeuser
7704:
7705: Make a user.
7706:
7707: =item passwd
7708:
7709: Allow for authentication mechanism and password to be changed.
7710:
7711: =item home
1.61 harris41 7712:
1.74 harris41 7713: Respond to a question "are you the home for a given user?"
7714:
7715: =item update
7716:
7717: Update contents of a subscribed resource.
7718:
7719: =item unsubscribe
7720:
7721: The server is unsubscribing from a resource.
7722:
7723: =item subscribe
7724:
7725: The server is subscribing to a resource.
7726:
7727: =item log
7728:
7729: Place in B<logs/lond.log>
7730:
7731: =item put
7732:
7733: stores hash in namespace
7734:
1.230 foxr 7735: =item rolesputy
1.74 harris41 7736:
7737: put a role into a user's environment
7738:
7739: =item get
7740:
7741: returns hash with keys from array
7742: reference filled in from namespace
7743:
7744: =item eget
7745:
7746: returns hash with keys from array
7747: reference filled in from namesp (encrypts the return communication)
7748:
7749: =item rolesget
7750:
7751: get a role from a user's environment
7752:
7753: =item del
7754:
7755: deletes keys out of array from namespace
7756:
7757: =item keys
7758:
7759: returns namespace keys
7760:
7761: =item dump
7762:
7763: dumps the complete (or key matching regexp) namespace into a hash
7764:
7765: =item store
7766:
7767: stores hash permanently
7768: for this url; hashref needs to be given and should be a \%hashname; the
7769: remaining args aren't required and if they aren't passed or are '' they will
7770: be derived from the ENV
7771:
7772: =item restore
7773:
7774: returns a hash for a given url
7775:
7776: =item querysend
7777:
7778: Tells client about the lonsql process that has been launched in response
7779: to a sent query.
7780:
7781: =item queryreply
7782:
7783: Accept information from lonsql and make appropriate storage in temporary
7784: file space.
7785:
7786: =item idput
7787:
7788: Defines usernames as corresponding to IDs. (These "IDs" are unique identifiers
7789: for each student, defined perhaps by the institutional Registrar.)
7790:
7791: =item idget
7792:
7793: Returns usernames corresponding to IDs. (These "IDs" are unique identifiers
7794: for each student, defined perhaps by the institutional Registrar.)
7795:
7796: =item tmpput
7797:
7798: Accept and store information in temporary space.
7799:
7800: =item tmpget
7801:
7802: Send along temporarily stored information.
7803:
7804: =item ls
7805:
7806: List part of a user's directory.
7807:
1.135 foxr 7808: =item pushtable
7809:
7810: Pushes a file in /home/httpd/lonTab directory. Currently limited to:
7811: hosts.tab and domain.tab. The old file is copied to *.tab.backup but
7812: must be restored manually in case of a problem with the new table file.
7813: pushtable requires that the request be encrypted and validated via
7814: ValidateManager. The form of the command is:
7815: enc:pushtable tablename <tablecontents> \n
7816: where pushtable, tablename and <tablecontents> will be encrypted, but \n is a
7817: cleartext newline.
7818:
1.74 harris41 7819: =item Hanging up (exit or init)
7820:
7821: What to do when a client tells the server that they (the client)
7822: are leaving the network.
7823:
7824: =item unknown command
7825:
7826: If B<lond> is sent an unknown command (not in the list above),
7827: it replys to the client "unknown_cmd".
1.135 foxr 7828:
1.74 harris41 7829:
7830: =item UNKNOWN CLIENT
7831:
7832: If the anti-spoofing algorithm cannot verify the client,
7833: the client is rejected (with a "refused" message sent
7834: to the client, and the connection is closed.
7835:
7836: =back
1.61 harris41 7837:
7838: =head1 PREREQUISITES
7839:
7840: IO::Socket
7841: IO::File
7842: Apache::File
7843: POSIX
7844: Crypt::IDEA
7845: LWP::UserAgent()
7846: GDBM_File
7847: Authen::Krb4
1.91 albertel 7848: Authen::Krb5
1.61 harris41 7849:
7850: =head1 COREQUISITES
7851:
7852: =head1 OSNAMES
7853:
7854: linux
7855:
7856: =head1 SCRIPT CATEGORIES
7857:
7858: Server/Process
7859:
7860: =cut
1.409 foxr 7861:
7862:
7863: =pod
7864:
7865: =head1 LOG MESSAGES
7866:
7867: The messages below can be emitted in the lond log. This log is located
7868: in ~httpd/perl/logs/lond.log Many log messages have HTML encapsulation
7869: to provide coloring if examined from inside a web page. Some do not.
7870: Where color is used, the colors are; Red for sometihhng to get excited
7871: about and to follow up on. Yellow for something to keep an eye on to
7872: be sure it does not get worse, Green,and Blue for informational items.
7873:
7874: In the discussions below, sometimes reference is made to ~httpd
7875: when describing file locations. There isn't really an httpd
7876: user, however there is an httpd directory that gets installed in the
7877: place that user home directories go. On linux, this is usually
7878: (always?) /home/httpd.
7879:
7880:
7881: Some messages are colorless. These are usually (not always)
7882: Green/Blue color level messages.
7883:
7884: =over 2
7885:
7886: =item (Red) LocalConnection rejecting non local: <ip> ne 127.0.0.1
7887:
7888: A local connection negotiation was attempted by
7889: a host whose IP address was not 127.0.0.1.
7890: The socket is closed and the child will exit.
7891: lond has three ways to establish an encyrption
7892: key with a client:
7893:
7894: =over 2
7895:
7896: =item local
7897:
7898: The key is written and read from a file.
7899: This is only valid for connections from localhost.
7900:
7901: =item insecure
7902:
7903: The key is generated by the server and
7904: transmitted to the client.
7905:
7906: =item ssl (secure)
7907:
7908: An ssl connection is negotiated with the client,
7909: the key is generated by the server and sent to the
7910: client across this ssl connection before the
7911: ssl connectionis terminated and clear text
7912: transmission resumes.
7913:
7914: =back
7915:
7916: =item (Red) LocalConnection: caller is insane! init = <init> and type = <type>
7917:
7918: The client is local but has not sent an initialization
7919: string that is the literal "init:local" The connection
7920: is closed and the child exits.
7921:
7922: =item Red CRITICAL Can't get key file <error>
7923:
7924: SSL key negotiation is being attempted but the call to
7925: lonssl::KeyFile failed. This usually means that the
7926: configuration file is not correctly defining or protecting
7927: the directories/files lonCertificateDirectory or
7928: lonnetPrivateKey
7929: <error> is a string that describes the reason that
7930: the key file could not be located.
7931:
7932: =item (Red) CRITICAL Can't get certificates <error>
7933:
7934: SSL key negotiation failed because we were not able to retrives our certificate
7935: or the CA's certificate in the call to lonssl::CertificateFile
7936: <error> is the textual reason this failed. Usual reasons:
7937:
7938: =over 2
7939:
7940: =item Apache config file for loncapa incorrect:
7941:
7942: one of the variables
7943: lonCertificateDirectory, lonnetCertificateAuthority, or lonnetCertificate
7944: undefined or incorrect
7945:
7946: =item Permission error:
7947:
7948: The directory pointed to by lonCertificateDirectory is not readable by lond
7949:
7950: =item Permission error:
7951:
7952: Files in the directory pointed to by lonCertificateDirectory are not readable by lond.
7953:
7954: =item Installation error:
7955:
7956: Either the certificate authority file or the certificate have not
7957: been installed in lonCertificateDirectory.
7958:
7959: =item (Red) CRITICAL SSL Socket promotion failed: <err>
7960:
7961: The promotion of the connection from plaintext to SSL failed
7962: <err> is the reason for the failure. There are two
7963: system calls involved in the promotion (one of which failed),
7964: a dup to produce
7965: a second fd on the raw socket over which the encrypted data
7966: will flow and IO::SOcket::SSL->new_from_fd which creates
7967: the SSL connection on the duped fd.
7968:
7969: =item (Blue) WARNING client did not respond to challenge
7970:
7971: This occurs on an insecure (non SSL) connection negotiation request.
7972: lond generates some number from the time, the PID and sends it to
7973: the client. The client must respond by echoing this information back.
7974: If the client does not do so, that's a violation of the challenge
7975: protocols and the connection will be failed.
7976:
7977: =item (Red) No manager table. Nobody can manage!!
7978:
7979: lond has the concept of privileged hosts that
7980: can perform remote management function such
7981: as update the hosts.tab. The manager hosts
7982: are described in the
7983: ~httpd/lonTabs/managers.tab file.
7984: this message is logged if this file is missing.
7985:
7986:
7987: =item (Green) Registering manager <dnsname> as <cluster_name> with <ipaddress>
7988:
7989: Reports the successful parse and registration
7990: of a specific manager.
7991:
7992: =item Green existing host <clustername:dnsname>
7993:
7994: The manager host is already defined in the hosts.tab
7995: the information in that table, rather than the info in the
7996: manager table will be used to determine the manager's ip.
7997:
7998: =item (Red) Unable to craete <filename>
7999:
8000: lond has been asked to create new versions of an administrative
8001: file (by a manager). When this is done, the new file is created
8002: in a temp file and then renamed into place so that there are always
8003: usable administrative files, even if the update fails. This failure
8004: message means that the temp file could not be created.
8005: The update is abandoned, and the old file is available for use.
8006:
8007: =item (Green) CopyFile from <oldname> to <newname> failed
8008:
8009: In an update of administrative files, the copy of the existing file to a
8010: backup file failed. The installation of the new file may still succeed,
8011: but there will not be a back up file to rever to (this should probably
8012: be yellow).
8013:
8014: =item (Green) Pushfile: backed up <oldname> to <newname>
8015:
8016: See above, the backup of the old administrative file succeeded.
8017:
8018: =item (Red) Pushfile: Unable to install <filename> <reason>
8019:
8020: The new administrative file could not be installed. In this case,
8021: the old administrative file is still in use.
8022:
8023: =item (Green) Installed new < filename>.
8024:
8025: The new administrative file was successfullly installed.
8026:
8027: =item (Red) Reinitializing lond pid=<pid>
8028:
8029: The lonc child process <pid> will be sent a USR2
8030: signal.
8031:
8032: =item (Red) Reinitializing self
8033:
8034: We've been asked to re-read our administrative files,and
8035: are doing so.
8036:
8037: =item (Yellow) error:Invalid process identifier <ident>
8038:
8039: A reinit command was received, but the target part of the
8040: command was not valid. It must be either
8041: 'lond' or 'lonc' but was <ident>
8042:
8043: =item (Green) isValideditCommand checking: Command = <command> Key = <key> newline = <newline>
8044:
8045: Checking to see if lond has been handed a valid edit
8046: command. It is possible the edit command is not valid
8047: in that case there are no log messages to indicate that.
8048:
8049: =item Result of password change for <username> pwchange_success
8050:
8051: The password for <username> was
8052: successfully changed.
8053:
8054: =item Unable to open <user> passwd to change password
8055:
8056: Could not rewrite the
8057: internal password file for a user
8058:
8059: =item Result of password change for <user> : <result>
8060:
8061: A unix password change for <user> was attempted
8062: and the pipe returned <result>
8063:
8064: =item LWP GET: <message> for <fname> (<remoteurl>)
8065:
8066: The lightweight process fetch for a resource failed
8067: with <message> the local filename that should
8068: have existed/been created was <fname> the
8069: corresponding URI: <remoteurl> This is emitted in several
8070: places.
8071:
8072: =item Unable to move <transname> to <destname>
8073:
8074: From fetch_user_file_handler - the user file was replicated but could not
8075: be mv'd to its final location.
8076:
8077: =item Looking for <domain> <username>
8078:
8079: From user_has_session_handler - This should be a Debug call instead
8080: it indicates lond is about to check whether the specified user has a
8081: session active on the specified domain on the local host.
8082:
8083: =item Client <ip> (<name>) hanging up: <input>
8084:
8085: lond has been asked to exit by its client. The <ip> and <name> identify the
8086: client systemand <input> is the full exit command sent to the server.
8087:
8088: =item Red CRITICAL: ABNORMAL EXIT. child <pid> for server <hostname> died through a crass with this error->[<message>].
8089:
8090: A lond child terminated. NOte that this termination can also occur when the
8091: child receives the QUIT or DIE signals. <pid> is the process id of the child,
8092: <hostname> the host lond is working for, and <message> the reason the child died
8093: to the best of our ability to get it (I would guess that any numeric value
8094: represents and errno value). This is immediately followed by
8095:
8096: =item Famous last words: Catching exception - <log>
8097:
8098: Where log is some recent information about the state of the child.
8099:
8100: =item Red CRITICAL: TIME OUT <pid>
8101:
8102: Some timeout occured for server <pid>. THis is normally a timeout on an LWP
8103: doing an HTTP::GET.
8104:
8105: =item child <pid> died
8106:
8107: The reaper caught a SIGCHILD for the lond child process <pid>
8108: This should be modified to also display the IP of the dying child
8109: $children{$pid}
8110:
8111: =item Unknown child 0 died
8112: A child died but the wait for it returned a pid of zero which really should not
8113: ever happen.
8114:
8115: =item Child <which> - <pid> looks like we missed it's death
8116:
8117: When a sigchild is received, the reaper process checks all children to see if they are
8118: alive. If children are dying quite quickly, the lack of signal queuing can mean
8119: that a signal hearalds the death of more than one child. If so this message indicates
8120: which other one died. <which> is the ip of a dead child
8121:
8122: =item Free socket: <shutdownretval>
8123:
8124: The HUNTSMAN sub was called due to a SIGINT in a child process. The socket is being shutdown.
8125: for whatever reason, <shutdownretval> is printed but in fact shutdown() is not documented
8126: to return anything. This is followed by:
8127:
8128: =item Red CRITICAL: Shutting down
8129:
8130: Just prior to exit.
8131:
8132: =item Free socket: <shutdownretval>
8133:
8134: The HUPSMAN sub was called due to a SIGHUP. all children get killsed, and lond execs itself.
8135: This is followed by:
8136:
8137: =item (Red) CRITICAL: Restarting
8138:
8139: lond is about to exec itself to restart.
8140:
8141: =item (Blue) Updating connections
8142:
8143: (In response to a USR2). All the children (except the one for localhost)
8144: are about to be killed, the hosts tab reread, and Apache reloaded via apachereload.
8145:
8146: =item (Blue) UpdateHosts killing child <pid> for ip <ip>
8147:
8148: Due to USR2 as above.
8149:
8150: =item (Green) keeping child for ip <ip> (pid = <pid>)
8151:
8152: In response to USR2 as above, the child indicated is not being restarted because
8153: it's assumed that we'll always need a child for the localhost.
8154:
8155:
8156: =item Going to check on the children
8157:
8158: Parent is about to check on the health of the child processes.
8159: Note that this is in response to a USR1 sent to the parent lond.
8160: there may be one or more of the next two messages:
8161:
8162: =item <pid> is dead
8163:
8164: A child that we have in our child hash as alive has evidently died.
8165:
8166: =item Child <pid> did not respond
8167:
8168: In the health check the child <pid> did not update/produce a pid_.txt
8169: file when sent it's USR1 signal. That process is killed with a 9 signal, as it's
8170: assumed to be hung in some un-fixable way.
8171:
8172: =item Finished checking children
8173:
8174: Master processs's USR1 processing is cojmplete.
8175:
8176: =item (Red) CRITICAL: ------- Starting ------
8177:
8178: (There are more '-'s on either side). Lond has forked itself off to
8179: form a new session and is about to start actual initialization.
8180:
8181: =item (Green) Attempting to start child (<client>)
8182:
8183: Started a new child process for <client>. Client is IO::Socket object
8184: connected to the child. This was as a result of a TCP/IP connection from a client.
8185:
8186: =item Unable to determine who caller was, getpeername returned nothing
8187:
8188: In child process initialization. either getpeername returned undef or
8189: a zero sized object was returned. Processing continues, but in my opinion,
8190: this should be cause for the child to exit.
8191:
8192: =item Unable to determine clientip
8193:
8194: In child process initialization. The peer address from getpeername was not defined.
8195: The client address is stored as "Unavailable" and processing continues.
8196:
8197: =item (Yellow) INFO: Connection <ip> <name> connection type = <type>
8198:
8199: In child initialization. A good connectionw as received from <ip>.
8200:
8201: =over 2
8202:
8203: =item <name>
8204:
8205: is the name of the client from hosts.tab.
8206:
8207: =item <type>
8208:
8209: Is the connection type which is either
8210:
8211: =over 2
8212:
8213: =item manager
8214:
8215: The connection is from a manager node, not in hosts.tab
8216:
8217: =item client
8218:
8219: the connection is from a non-manager in the hosts.tab
8220:
8221: =item both
8222:
8223: The connection is from a manager in the hosts.tab.
8224:
8225: =back
8226:
8227: =back
8228:
8229: =item (Blue) Certificates not installed -- trying insecure auth
8230:
8231: One of the certificate file, key file or
8232: certificate authority file could not be found for a client attempting
8233: SSL connection intiation. COnnection will be attemptied in in-secure mode.
8234: (this would be a system with an up to date lond that has not gotten a
8235: certificate from us).
8236:
8237: =item (Green) Successful local authentication
8238:
8239: A local connection successfully negotiated the encryption key.
8240: In this case the IDEA key is in a file (that is hopefully well protected).
8241:
8242: =item (Green) Successful ssl authentication with <client>
8243:
8244: The client (<client> is the peer's name in hosts.tab), has successfully
8245: negotiated an SSL connection with this child process.
8246:
8247: =item (Green) Successful insecure authentication with <client>
8248:
8249:
8250: The client has successfully negotiated an insecure connection withthe child process.
8251:
8252: =item (Yellow) Attempted insecure connection disallowed
8253:
8254: The client attempted and failed to successfully negotiate a successful insecure
8255: connection. This can happen either because the variable londAllowInsecure is false
8256: or undefined, or becuse the child did not successfully echo back the challenge
8257: string.
8258:
8259:
8260: =back
8261:
1.441 raeburn 8262: =back
8263:
1.409 foxr 8264:
8265: =cut
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