Annotation of loncom/lond, revision 1.524
1.1 albertel 1: #!/usr/bin/perl
2: # The LearningOnline Network
3: # lond "LON Daemon" Server (port "LOND" 5663)
1.60 www 4: #
1.524 ! raeburn 5: # $Id: lond,v 1.523 2016/07/25 19:49:45 raeburn Exp $
1.60 www 6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
1.167 foxr 13: # the Free Software Foundation; either version 2 of the License, or
1.60 www 14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
1.469 foxr 18:
1.60 www 19: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20: # GNU General Public License for more details.
21: #
22: # You should have received a copy of the GNU General Public License
23: # along with LON-CAPA; if not, write to the Free Software
1.178 foxr 24: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
1.60 www 25: #
26: # /home/httpd/html/adm/gpl.txt
27: #
1.161 foxr 28:
29:
1.60 www 30: # http://www.lon-capa.org/
31: #
1.54 harris41 32:
1.134 albertel 33: use strict;
1.80 harris41 34: use lib '/home/httpd/lib/perl/';
1.325 albertel 35: use LONCAPA;
1.80 harris41 36: use LONCAPA::Configuration;
1.490 droeschl 37: use LONCAPA::Lond;
1.80 harris41 38:
1.1 albertel 39: use IO::Socket;
40: use IO::File;
1.126 albertel 41: #use Apache::File;
1.1 albertel 42: use POSIX;
43: use Crypt::IDEA;
1.523 raeburn 44: use HTTP::Request;
1.347 raeburn 45: use Digest::MD5 qw(md5_hex);
1.3 www 46: use GDBM_File;
1.91 albertel 47: use Authen::Krb5;
1.49 albertel 48: use localauth;
1.193 raeburn 49: use localenroll;
1.265 albertel 50: use localstudentphoto;
1.143 foxr 51: use File::Copy;
1.292 albertel 52: use File::Find;
1.200 matthew 53: use LONCAPA::lonlocal;
54: use LONCAPA::lonssl;
1.221 albertel 55: use Fcntl qw(:flock);
1.383 raeburn 56: use Apache::lonnet;
1.472 raeburn 57: use Mail::Send;
1.518 raeburn 58: use Crypt::Eksblowfish::Bcrypt;
59: use Digest::SHA;
60: use Encode;
1.523 raeburn 61: use LONCAPA::LWPReq;
1.1 albertel 62:
1.463 foxr 63: my $DEBUG = 0; # Non zero to enable debug log entries.
1.77 foxr 64:
1.57 www 65: my $status='';
66: my $lastlog='';
67:
1.524 ! raeburn 68: my $VERSION='$Revision: 1.523 $'; #' stupid emacs
1.121 albertel 69: my $remoteVERSION;
1.214 foxr 70: my $currenthostid="default";
1.115 albertel 71: my $currentdomainid;
1.134 albertel 72:
73: my $client;
1.200 matthew 74: my $clientip; # IP address of client.
75: my $clientname; # LonCAPA name of client.
1.448 raeburn 76: my $clientversion; # LonCAPA version running on client.
77: my $clienthomedom; # LonCAPA domain of homeID for client.
78: # primary library server.
1.140 foxr 79:
1.134 albertel 80: my $server;
1.200 matthew 81:
82: my $keymode;
1.198 foxr 83:
1.207 foxr 84: my $cipher; # Cipher key negotiated with client
85: my $tmpsnum = 0; # Id of tmpputs.
86:
1.178 foxr 87: #
88: # Connection type is:
89: # client - All client actions are allowed
90: # manager - only management functions allowed.
91: # both - Both management and client actions are allowed
92: #
1.161 foxr 93:
1.178 foxr 94: my $ConnectionType;
1.161 foxr 95:
1.178 foxr 96: my %managers; # Ip -> manager names
1.161 foxr 97:
1.178 foxr 98: my %perlvar; # Will have the apache conf defined perl vars.
1.134 albertel 99:
1.480 raeburn 100: my $dist;
101:
1.178 foxr 102: #
1.207 foxr 103: # The hash below is used for command dispatching, and is therefore keyed on the request keyword.
104: # Each element of the hash contains a reference to an array that contains:
105: # A reference to a sub that executes the request corresponding to the keyword.
106: # A flag that is true if the request must be encoded to be acceptable.
107: # A mask with bits as follows:
108: # CLIENT_OK - Set when the function is allowed by ordinary clients
109: # MANAGER_OK - Set when the function is allowed to manager clients.
110: #
111: my $CLIENT_OK = 1;
112: my $MANAGER_OK = 2;
113: my %Dispatcher;
114:
115:
116: #
1.178 foxr 117: # The array below are password error strings."
118: #
119: my $lastpwderror = 13; # Largest error number from lcpasswd.
120: my @passwderrors = ("ok",
1.287 foxr 121: "pwchange_failure - lcpasswd must be run as user 'www'",
122: "pwchange_failure - lcpasswd got incorrect number of arguments",
123: "pwchange_failure - lcpasswd did not get the right nubmer of input text lines",
124: "pwchange_failure - lcpasswd too many simultaneous pwd changes in progress",
125: "pwchange_failure - lcpasswd User does not exist.",
126: "pwchange_failure - lcpasswd Incorrect current passwd",
127: "pwchange_failure - lcpasswd Unable to su to root.",
128: "pwchange_failure - lcpasswd Cannot set new passwd.",
129: "pwchange_failure - lcpasswd Username has invalid characters",
130: "pwchange_failure - lcpasswd Invalid characters in password",
131: "pwchange_failure - lcpasswd User already exists",
132: "pwchange_failure - lcpasswd Something went wrong with user addition.",
133: "pwchange_failure - lcpasswd Password mismatch",
134: "pwchange_failure - lcpasswd Error filename is invalid");
1.97 foxr 135:
136:
1.412 foxr 137: # This array are the errors from lcinstallfile:
138:
139: my @installerrors = ("ok",
140: "Initial user id of client not that of www",
141: "Usage error, not enough command line arguments",
1.500 bisitz 142: "Source filename does not exist",
143: "Destination filename does not exist",
1.412 foxr 144: "Some file operation failed",
145: "Invalid table filename."
146: );
1.207 foxr 147:
148: #
149: # Statistics that are maintained and dislayed in the status line.
150: #
1.212 foxr 151: my $Transactions = 0; # Number of attempted transactions.
152: my $Failures = 0; # Number of transcations failed.
1.207 foxr 153:
154: # ResetStatistics:
155: # Resets the statistics counters:
156: #
157: sub ResetStatistics {
158: $Transactions = 0;
159: $Failures = 0;
160: }
161:
1.200 matthew 162: #------------------------------------------------------------------------
163: #
164: # LocalConnection
165: # Completes the formation of a locally authenticated connection.
166: # This function will ensure that the 'remote' client is really the
167: # local host. If not, the connection is closed, and the function fails.
168: # If so, initcmd is parsed for the name of a file containing the
169: # IDEA session key. The fie is opened, read, deleted and the session
170: # key returned to the caller.
171: #
172: # Parameters:
173: # $Socket - Socket open on client.
174: # $initcmd - The full text of the init command.
175: #
176: # Returns:
177: # IDEA session key on success.
178: # undef on failure.
179: #
180: sub LocalConnection {
181: my ($Socket, $initcmd) = @_;
1.373 albertel 182: Debug("Attempting local connection: $initcmd client: $clientip");
1.277 albertel 183: if($clientip ne "127.0.0.1") {
1.200 matthew 184: &logthis('<font color="red"> LocalConnection rejecting non local: '
1.373 albertel 185: ."$clientip ne 127.0.0.1 </font>");
1.200 matthew 186: close $Socket;
187: return undef;
1.224 foxr 188: } else {
1.200 matthew 189: chomp($initcmd); # Get rid of \n in filename.
190: my ($init, $type, $name) = split(/:/, $initcmd);
191: Debug(" Init command: $init $type $name ");
192:
193: # Require that $init = init, and $type = local: Otherwise
194: # the caller is insane:
195:
196: if(($init ne "init") && ($type ne "local")) {
197: &logthis('<font color = "red"> LocalConnection: caller is insane! '
198: ."init = $init, and type = $type </font>");
199: close($Socket);;
200: return undef;
201:
202: }
203: # Now get the key filename:
204:
205: my $IDEAKey = lonlocal::ReadKeyFile($name);
206: return $IDEAKey;
207: }
208: }
209: #------------------------------------------------------------------------------
210: #
211: # SSLConnection
212: # Completes the formation of an ssh authenticated connection. The
213: # socket is promoted to an ssl socket. If this promotion and the associated
214: # certificate exchange are successful, the IDEA key is generated and sent
215: # to the remote peer via the SSL tunnel. The IDEA key is also returned to
216: # the caller after the SSL tunnel is torn down.
217: #
218: # Parameters:
219: # Name Type Purpose
220: # $Socket IO::Socket::INET Plaintext socket.
221: #
222: # Returns:
223: # IDEA key on success.
224: # undef on failure.
225: #
226: sub SSLConnection {
227: my $Socket = shift;
228:
229: Debug("SSLConnection: ");
230: my $KeyFile = lonssl::KeyFile();
231: if(!$KeyFile) {
232: my $err = lonssl::LastError();
233: &logthis("<font color=\"red\"> CRITICAL"
234: ."Can't get key file $err </font>");
235: return undef;
236: }
237: my ($CACertificate,
238: $Certificate) = lonssl::CertificateFile();
239:
240:
241: # If any of the key, certificate or certificate authority
242: # certificate filenames are not defined, this can't work.
243:
244: if((!$Certificate) || (!$CACertificate)) {
245: my $err = lonssl::LastError();
246: &logthis("<font color=\"red\"> CRITICAL"
247: ."Can't get certificates: $err </font>");
248:
249: return undef;
250: }
251: Debug("Key: $KeyFile CA: $CACertificate Cert: $Certificate");
252:
253: # Indicate to our peer that we can procede with
254: # a transition to ssl authentication:
255:
256: print $Socket "ok:ssl\n";
257:
258: Debug("Approving promotion -> ssl");
259: # And do so:
260:
261: my $SSLSocket = lonssl::PromoteServerSocket($Socket,
262: $CACertificate,
263: $Certificate,
264: $KeyFile);
265: if(! ($SSLSocket) ) { # SSL socket promotion failed.
266: my $err = lonssl::LastError();
267: &logthis("<font color=\"red\"> CRITICAL "
268: ."SSL Socket promotion failed: $err </font>");
269: return undef;
270: }
271: Debug("SSL Promotion successful");
272:
273: #
274: # The only thing we'll use the socket for is to send the IDEA key
275: # to the peer:
276:
277: my $Key = lonlocal::CreateCipherKey();
278: print $SSLSocket "$Key\n";
279:
280: lonssl::Close($SSLSocket);
281:
282: Debug("Key exchange complete: $Key");
283:
284: return $Key;
285: }
286: #
287: # InsecureConnection:
288: # If insecure connections are allowd,
289: # exchange a challenge with the client to 'validate' the
290: # client (not really, but that's the protocol):
291: # We produce a challenge string that's sent to the client.
292: # The client must then echo the challenge verbatim to us.
293: #
294: # Parameter:
295: # Socket - Socket open on the client.
296: # Returns:
297: # 1 - success.
298: # 0 - failure (e.g.mismatch or insecure not allowed).
299: #
300: sub InsecureConnection {
301: my $Socket = shift;
302:
303: # Don't even start if insecure connections are not allowed.
304:
305: if(! $perlvar{londAllowInsecure}) { # Insecure connections not allowed.
306: return 0;
307: }
308:
309: # Fabricate a challenge string and send it..
310:
311: my $challenge = "$$".time; # pid + time.
312: print $Socket "$challenge\n";
313: &status("Waiting for challenge reply");
314:
315: my $answer = <$Socket>;
316: $answer =~s/\W//g;
317: if($challenge eq $answer) {
318: return 1;
1.224 foxr 319: } else {
1.200 matthew 320: logthis("<font color='blue'>WARNING client did not respond to challenge</font>");
321: &status("No challenge reqply");
322: return 0;
323: }
324:
325:
326: }
1.251 foxr 327: #
328: # Safely execute a command (as long as it's not a shel command and doesn
329: # not require/rely on shell escapes. The function operates by doing a
330: # a pipe based fork and capturing stdout and stderr from the pipe.
331: #
332: # Formal Parameters:
333: # $line - A line of text to be executed as a command.
334: # Returns:
335: # The output from that command. If the output is multiline the caller
336: # must know how to split up the output.
337: #
338: #
339: sub execute_command {
340: my ($line) = @_;
341: my @words = split(/\s/, $line); # Bust the command up into words.
342: my $output = "";
343:
344: my $pid = open(CHILD, "-|");
345:
346: if($pid) { # Parent process
347: Debug("In parent process for execute_command");
348: my @data = <CHILD>; # Read the child's outupt...
349: close CHILD;
350: foreach my $output_line (@data) {
351: Debug("Adding $output_line");
352: $output .= $output_line; # Presumably has a \n on it.
353: }
354:
355: } else { # Child process
356: close (STDERR);
357: open (STDERR, ">&STDOUT");# Combine stderr, and stdout...
358: exec(@words); # won't return.
359: }
360: return $output;
361: }
362:
1.200 matthew 363:
1.140 foxr 364: # GetCertificate: Given a transaction that requires a certificate,
365: # this function will extract the certificate from the transaction
366: # request. Note that at this point, the only concept of a certificate
367: # is the hostname to which we are connected.
368: #
369: # Parameter:
370: # request - The request sent by our client (this parameterization may
371: # need to change when we really use a certificate granting
372: # authority.
373: #
374: sub GetCertificate {
375: my $request = shift;
376:
377: return $clientip;
378: }
1.161 foxr 379:
1.178 foxr 380: #
381: # Return true if client is a manager.
382: #
383: sub isManager {
384: return (($ConnectionType eq "manager") || ($ConnectionType eq "both"));
385: }
386: #
387: # Return tru if client can do client functions
388: #
389: sub isClient {
390: return (($ConnectionType eq "client") || ($ConnectionType eq "both"));
391: }
1.161 foxr 392:
393:
1.156 foxr 394: #
395: # ReadManagerTable: Reads in the current manager table. For now this is
396: # done on each manager authentication because:
397: # - These authentications are not frequent
398: # - This allows dynamic changes to the manager table
399: # without the need to signal to the lond.
400: #
401: sub ReadManagerTable {
402:
1.412 foxr 403: &Debug("Reading manager table");
1.156 foxr 404: # Clean out the old table first..
405:
1.166 foxr 406: foreach my $key (keys %managers) {
407: delete $managers{$key};
408: }
409:
410: my $tablename = $perlvar{'lonTabDir'}."/managers.tab";
411: if (!open (MANAGERS, $tablename)) {
1.473 raeburn 412: my $hostname = &Apache::lonnet::hostname($perlvar{'lonHostID'});
413: if (&Apache::lonnet::is_LC_dns($hostname)) {
1.472 raeburn 414: &logthis('<font color="red">No manager table. Nobody can manage!!</font>');
415: }
416: return;
1.166 foxr 417: }
418: while(my $host = <MANAGERS>) {
419: chomp($host);
420: if ($host =~ "^#") { # Comment line.
421: next;
422: }
1.368 albertel 423: if (!defined &Apache::lonnet::get_host_ip($host)) { # This is a non cluster member
1.161 foxr 424: # The entry is of the form:
425: # cluname:hostname
426: # cluname - A 'cluster hostname' is needed in order to negotiate
427: # the host key.
428: # hostname- The dns name of the host.
429: #
1.166 foxr 430: my($cluname, $dnsname) = split(/:/, $host);
431:
432: my $ip = gethostbyname($dnsname);
433: if(defined($ip)) { # bad names don't deserve entry.
434: my $hostip = inet_ntoa($ip);
435: $managers{$hostip} = $cluname;
436: logthis('<font color="green"> registering manager '.
437: "$dnsname as $cluname with $hostip </font>\n");
438: }
439: } else {
440: logthis('<font color="green"> existing host'." $host</font>\n");
1.472 raeburn 441: $managers{&Apache::lonnet::get_host_ip($host)} = $host; # Use info from cluster tab if cluster memeber
1.166 foxr 442: }
443: }
1.156 foxr 444: }
1.140 foxr 445:
446: #
447: # ValidManager: Determines if a given certificate represents a valid manager.
448: # in this primitive implementation, the 'certificate' is
449: # just the connecting loncapa client name. This is checked
450: # against a valid client list in the configuration.
451: #
452: #
453: sub ValidManager {
454: my $certificate = shift;
455:
1.163 foxr 456: return isManager;
1.140 foxr 457: }
458: #
1.143 foxr 459: # CopyFile: Called as part of the process of installing a
460: # new configuration file. This function copies an existing
461: # file to a backup file.
462: # Parameters:
463: # oldfile - Name of the file to backup.
464: # newfile - Name of the backup file.
465: # Return:
466: # 0 - Failure (errno has failure reason).
467: # 1 - Success.
468: #
469: sub CopyFile {
1.192 foxr 470:
471: my ($oldfile, $newfile) = @_;
1.143 foxr 472:
1.281 matthew 473: if (! copy($oldfile,$newfile)) {
474: return 0;
1.143 foxr 475: }
1.281 matthew 476: chmod(0660, $newfile);
477: return 1;
1.143 foxr 478: }
1.157 foxr 479: #
480: # Host files are passed out with externally visible host IPs.
481: # If, for example, we are behind a fire-wall or NAT host, our
482: # internally visible IP may be different than the externally
483: # visible IP. Therefore, we always adjust the contents of the
484: # host file so that the entry for ME is the IP that we believe
485: # we have. At present, this is defined as the entry that
486: # DNS has for us. If by some chance we are not able to get a
487: # DNS translation for us, then we assume that the host.tab file
488: # is correct.
489: # BUGBUGBUG - in the future, we really should see if we can
490: # easily query the interface(s) instead.
491: # Parameter(s):
492: # contents - The contents of the host.tab to check.
493: # Returns:
494: # newcontents - The adjusted contents.
495: #
496: #
497: sub AdjustHostContents {
498: my $contents = shift;
499: my $adjusted;
500: my $me = $perlvar{'lonHostID'};
501:
1.354 albertel 502: foreach my $line (split(/\n/,$contents)) {
1.472 raeburn 503: if(!(($line eq "") || ($line =~ /^ *\#/) || ($line =~ /^ *$/) ||
504: ($line =~ /^\s*\^/))) {
1.157 foxr 505: chomp($line);
506: my ($id,$domain,$role,$name,$ip,$maxcon,$idleto,$mincon)=split(/:/,$line);
507: if ($id eq $me) {
1.354 albertel 508: my $ip = gethostbyname($name);
509: my $ipnew = inet_ntoa($ip);
510: $ip = $ipnew;
1.157 foxr 511: # Reconstruct the host line and append to adjusted:
512:
1.354 albertel 513: my $newline = "$id:$domain:$role:$name:$ip";
514: if($maxcon ne "") { # Not all hosts have loncnew tuning params
515: $newline .= ":$maxcon:$idleto:$mincon";
516: }
517: $adjusted .= $newline."\n";
1.157 foxr 518:
1.354 albertel 519: } else { # Not me, pass unmodified.
520: $adjusted .= $line."\n";
521: }
1.157 foxr 522: } else { # Blank or comment never re-written.
523: $adjusted .= $line."\n"; # Pass blanks and comments as is.
524: }
1.354 albertel 525: }
526: return $adjusted;
1.157 foxr 527: }
1.143 foxr 528: #
529: # InstallFile: Called to install an administrative file:
1.412 foxr 530: # - The file is created int a temp directory called <name>.tmp
531: # - lcinstall file is called to install the file.
532: # since the web app has no direct write access to the table directory
1.143 foxr 533: #
534: # Parameters:
535: # Name of the file
536: # File Contents.
537: # Return:
538: # nonzero - success.
539: # 0 - failure and $! has an errno.
1.412 foxr 540: # Assumptions:
541: # File installtion is a relatively infrequent
1.143 foxr 542: #
543: sub InstallFile {
1.192 foxr 544:
545: my ($Filename, $Contents) = @_;
1.412 foxr 546: # my $TempFile = $Filename.".tmp";
547: my $exedir = $perlvar{'lonDaemons'};
548: my $tmpdir = $exedir.'/tmp/';
549: my $TempFile = $tmpdir."TempTableFile.tmp";
1.143 foxr 550:
551: # Open the file for write:
552:
553: my $fh = IO::File->new("> $TempFile"); # Write to temp.
554: if(!(defined $fh)) {
555: &logthis('<font color="red"> Unable to create '.$TempFile."</font>");
556: return 0;
557: }
558: # write the contents of the file:
559:
560: print $fh ($Contents);
561: $fh->close; # In case we ever have a filesystem w. locking
562:
1.412 foxr 563: chmod(0664, $TempFile); # Everyone can write it.
564:
565: # Use lcinstall file to put the file in the table directory...
566:
567: &Debug("Opening pipe to $exedir/lcinstallfile $TempFile $Filename");
568: my $pf = IO::File->new("| $exedir/lcinstallfile $TempFile $Filename > $exedir/logs/lcinstallfile.log");
569: close $pf;
570: my $err = $?;
571: &Debug("Status is $err");
572: if ($err != 0) {
573: my $msg = $err;
574: if ($err < @installerrors) {
575: $msg = $installerrors[$err];
576: }
577: &logthis("Install failed for table file $Filename : $msg");
578: return 0;
579: }
580:
581: # Remove the temp file:
1.143 foxr 582:
1.412 foxr 583: unlink($TempFile);
1.143 foxr 584:
585: return 1;
586: }
1.200 matthew 587:
588:
1.169 foxr 589: #
590: # ConfigFileFromSelector: converts a configuration file selector
1.411 foxr 591: # into a configuration file pathname.
1.472 raeburn 592: # Supports the following file selectors:
593: # hosts, domain, dns_hosts, dns_domain
1.411 foxr 594: #
1.169 foxr 595: #
596: # Parameters:
597: # selector - Configuration file selector.
598: # Returns:
599: # Full path to the file or undef if the selector is invalid.
600: #
601: sub ConfigFileFromSelector {
602: my $selector = shift;
603: my $tablefile;
604:
605: my $tabledir = $perlvar{'lonTabDir'}.'/';
1.472 raeburn 606: if (($selector eq "hosts") || ($selector eq "domain") ||
607: ($selector eq "dns_hosts") || ($selector eq "dns_domain")) {
1.411 foxr 608: $tablefile = $tabledir.$selector.'.tab';
1.169 foxr 609: }
610: return $tablefile;
611: }
1.143 foxr 612: #
1.141 foxr 613: # PushFile: Called to do an administrative push of a file.
614: # - Ensure the file being pushed is one we support.
615: # - Backup the old file to <filename.saved>
616: # - Separate the contents of the new file out from the
617: # rest of the request.
618: # - Write the new file.
619: # Parameter:
620: # Request - The entire user request. This consists of a : separated
621: # string pushfile:tablename:contents.
622: # NOTE: The contents may have :'s in it as well making things a bit
623: # more interesting... but not much.
624: # Returns:
625: # String to send to client ("ok" or "refused" if bad file).
626: #
627: sub PushFile {
1.510 raeburn 628: my $request = shift;
1.141 foxr 629: my ($command, $filename, $contents) = split(":", $request, 3);
1.412 foxr 630: &Debug("PushFile");
1.141 foxr 631:
632: # At this point in time, pushes for only the following tables are
633: # supported:
634: # hosts.tab ($filename eq host).
635: # domain.tab ($filename eq domain).
1.472 raeburn 636: # dns_hosts.tab ($filename eq dns_host).
637: # dns_domain.tab ($filename eq dns_domain).
1.141 foxr 638: # Construct the destination filename or reject the request.
639: #
640: # lonManage is supposed to ensure this, however this session could be
641: # part of some elaborate spoof that managed somehow to authenticate.
642: #
643:
1.169 foxr 644:
645: my $tablefile = ConfigFileFromSelector($filename);
646: if(! (defined $tablefile)) {
1.141 foxr 647: return "refused";
648: }
1.412 foxr 649:
1.157 foxr 650: # If the file being pushed is the host file, we adjust the entry for ourself so that the
651: # IP will be our current IP as looked up in dns. Note this is only 99% good as it's possible
652: # to conceive of conditions where we don't have a DNS entry locally. This is possible in a
653: # network sense but it doesn't make much sense in a LonCAPA sense so we ignore (for now)
654: # that possibilty.
655:
656: if($filename eq "host") {
657: $contents = AdjustHostContents($contents);
1.510 raeburn 658: } elsif ($filename eq 'dns_host' || $filename eq 'dns_domain') {
659: if ($contents eq '') {
660: &logthis('<font color="red"> Pushfile: unable to install '
661: .$tablefile." - no data received from push. </font>");
662: return 'error: push had no data';
663: }
664: if (&Apache::lonnet::get_host_ip($clientname)) {
665: my $clienthost = &Apache::lonnet::hostname($clientname);
666: if ($managers{$clientip} eq $clientname) {
667: my $clientprotocol = $Apache::lonnet::protocol{$clientname};
668: $clientprotocol = 'http' if ($clientprotocol ne 'https');
669: my $url = '/adm/'.$filename;
670: $url =~ s{_}{/};
671: my $request=new HTTP::Request('GET',"$clientprotocol://$clienthost$url");
1.523 raeburn 672: my $response = LONCAPA::LWPReq::makerequest($clientname,$request,'',\%perlvar,60,0);
1.510 raeburn 673: if ($response->is_error()) {
674: &logthis('<font color="red"> Pushfile: unable to install '
675: .$tablefile." - error attempting to pull data. </font>");
676: return 'error: pull failed';
677: } else {
678: my $result = $response->content;
679: chomp($result);
680: unless ($result eq $contents) {
681: &logthis('<font color="red"> Pushfile: unable to install '
682: .$tablefile." - pushed data and pulled data differ. </font>");
683: my $pushleng = length($contents);
684: my $pullleng = length($result);
685: if ($pushleng != $pullleng) {
686: return "error: $pushleng vs $pullleng bytes";
687: } else {
688: return "error: mismatch push and pull";
689: }
690: }
691: }
692: }
693: }
1.157 foxr 694: }
695:
1.141 foxr 696: # Install the new file:
697:
1.412 foxr 698: &logthis("Installing new $tablefile contents:\n$contents");
1.143 foxr 699: if(!InstallFile($tablefile, $contents)) {
700: &logthis('<font color="red"> Pushfile: unable to install '
1.145 foxr 701: .$tablefile." $! </font>");
1.143 foxr 702: return "error:$!";
1.224 foxr 703: } else {
1.143 foxr 704: &logthis('<font color="green"> Installed new '.$tablefile
1.473 raeburn 705: ." - transaction by: $clientname ($clientip)</font>");
1.472 raeburn 706: my $adminmail = $perlvar{'lonAdmEMail'};
707: my $admindom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
708: if ($admindom ne '') {
709: my %domconfig =
710: &Apache::lonnet::get_dom('configuration',['contacts'],$admindom);
711: if (ref($domconfig{'contacts'}) eq 'HASH') {
712: if ($domconfig{'contacts'}{'adminemail'} ne '') {
713: $adminmail = $domconfig{'contacts'}{'adminemail'};
714: }
715: }
716: }
717: if ($adminmail =~ /^[^\@]+\@[^\@]+$/) {
718: my $msg = new Mail::Send;
719: $msg->to($adminmail);
720: $msg->subject('LON-CAPA DNS update on '.$perlvar{'lonHostID'});
721: $msg->add('Content-type','text/plain; charset=UTF-8');
722: if (my $fh = $msg->open()) {
723: print $fh 'Update to '.$tablefile.' from Cluster Manager '.
1.473 raeburn 724: "$clientname ($clientip)\n";
1.472 raeburn 725: $fh->close;
726: }
727: }
1.143 foxr 728: }
729:
1.141 foxr 730: # Indicate success:
731:
732: return "ok";
733:
734: }
1.145 foxr 735:
736: #
737: # Called to re-init either lonc or lond.
738: #
739: # Parameters:
740: # request - The full request by the client. This is of the form
741: # reinit:<process>
742: # where <process> is allowed to be either of
743: # lonc or lond
744: #
745: # Returns:
746: # The string to be sent back to the client either:
747: # ok - Everything worked just fine.
748: # error:why - There was a failure and why describes the reason.
749: #
750: #
751: sub ReinitProcess {
752: my $request = shift;
753:
1.146 foxr 754:
755: # separate the request (reinit) from the process identifier and
756: # validate it producing the name of the .pid file for the process.
757: #
758: #
759: my ($junk, $process) = split(":", $request);
1.147 foxr 760: my $processpidfile = $perlvar{'lonDaemons'}.'/logs/';
1.146 foxr 761: if($process eq 'lonc') {
762: $processpidfile = $processpidfile."lonc.pid";
1.147 foxr 763: if (!open(PIDFILE, "< $processpidfile")) {
764: return "error:Open failed for $processpidfile";
765: }
766: my $loncpid = <PIDFILE>;
767: close(PIDFILE);
768: logthis('<font color="red"> Reinitializing lonc pid='.$loncpid
769: ."</font>");
770: kill("USR2", $loncpid);
1.146 foxr 771: } elsif ($process eq 'lond') {
1.147 foxr 772: logthis('<font color="red"> Reinitializing self (lond) </font>');
773: &UpdateHosts; # Lond is us!!
1.146 foxr 774: } else {
775: &logthis('<font color="yellow" Invalid reinit request for '.$process
776: ."</font>");
777: return "error:Invalid process identifier $process";
778: }
1.145 foxr 779: return 'ok';
780: }
1.168 foxr 781: # Validate a line in a configuration file edit script:
782: # Validation includes:
783: # - Ensuring the command is valid.
784: # - Ensuring the command has sufficient parameters
785: # Parameters:
786: # scriptline - A line to validate (\n has been stripped for what it's worth).
1.167 foxr 787: #
1.168 foxr 788: # Return:
789: # 0 - Invalid scriptline.
790: # 1 - Valid scriptline
791: # NOTE:
792: # Only the command syntax is checked, not the executability of the
793: # command.
794: #
795: sub isValidEditCommand {
796: my $scriptline = shift;
797:
798: # Line elements are pipe separated:
799:
800: my ($command, $key, $newline) = split(/\|/, $scriptline);
801: &logthis('<font color="green"> isValideditCommand checking: '.
802: "Command = '$command', Key = '$key', Newline = '$newline' </font>\n");
803:
804: if ($command eq "delete") {
805: #
806: # key with no newline.
807: #
808: if( ($key eq "") || ($newline ne "")) {
809: return 0; # Must have key but no newline.
810: } else {
811: return 1; # Valid syntax.
812: }
1.169 foxr 813: } elsif ($command eq "replace") {
1.168 foxr 814: #
815: # key and newline:
816: #
817: if (($key eq "") || ($newline eq "")) {
818: return 0;
819: } else {
820: return 1;
821: }
1.169 foxr 822: } elsif ($command eq "append") {
823: if (($key ne "") && ($newline eq "")) {
824: return 1;
825: } else {
826: return 0;
827: }
1.168 foxr 828: } else {
829: return 0; # Invalid command.
830: }
831: return 0; # Should not get here!!!
832: }
1.169 foxr 833: #
834: # ApplyEdit - Applies an edit command to a line in a configuration
835: # file. It is the caller's responsiblity to validate the
836: # edit line.
837: # Parameters:
838: # $directive - A single edit directive to apply.
839: # Edit directives are of the form:
840: # append|newline - Appends a new line to the file.
841: # replace|key|newline - Replaces the line with key value 'key'
842: # delete|key - Deletes the line with key value 'key'.
843: # $editor - A config file editor object that contains the
844: # file being edited.
845: #
846: sub ApplyEdit {
1.192 foxr 847:
848: my ($directive, $editor) = @_;
1.169 foxr 849:
850: # Break the directive down into its command and its parameters
851: # (at most two at this point. The meaning of the parameters, if in fact
852: # they exist depends on the command).
853:
854: my ($command, $p1, $p2) = split(/\|/, $directive);
855:
856: if($command eq "append") {
857: $editor->Append($p1); # p1 - key p2 null.
858: } elsif ($command eq "replace") {
859: $editor->ReplaceLine($p1, $p2); # p1 - key p2 = newline.
860: } elsif ($command eq "delete") {
861: $editor->DeleteLine($p1); # p1 - key p2 null.
862: } else { # Should not get here!!!
863: die "Invalid command given to ApplyEdit $command"
864: }
865: }
866: #
867: # AdjustOurHost:
868: # Adjusts a host file stored in a configuration file editor object
869: # for the true IP address of this host. This is necessary for hosts
870: # that live behind a firewall.
871: # Those hosts have a publicly distributed IP of the firewall, but
872: # internally must use their actual IP. We assume that a given
873: # host only has a single IP interface for now.
874: # Formal Parameters:
875: # editor - The configuration file editor to adjust. This
876: # editor is assumed to contain a hosts.tab file.
877: # Strategy:
878: # - Figure out our hostname.
879: # - Lookup the entry for this host.
880: # - Modify the line to contain our IP
881: # - Do a replace for this host.
882: sub AdjustOurHost {
883: my $editor = shift;
884:
885: # figure out who I am.
886:
887: my $myHostName = $perlvar{'lonHostID'}; # LonCAPA hostname.
888:
889: # Get my host file entry.
890:
891: my $ConfigLine = $editor->Find($myHostName);
892: if(! (defined $ConfigLine)) {
893: die "AdjustOurHost - no entry for me in hosts file $myHostName";
894: }
895: # figure out my IP:
896: # Use the config line to get my hostname.
897: # Use gethostbyname to translate that into an IP address.
898: #
1.338 albertel 899: my ($id,$domain,$role,$name,$maxcon,$idleto,$mincon) = split(/:/,$ConfigLine);
1.169 foxr 900: #
901: # Reassemble the config line from the elements in the list.
902: # Note that if the loncnew items were not present before, they will
903: # be now even if they would be empty
904: #
905: my $newConfigLine = $id;
1.338 albertel 906: foreach my $item ($domain, $role, $name, $maxcon, $idleto, $mincon) {
1.169 foxr 907: $newConfigLine .= ":".$item;
908: }
909: # Replace the line:
910:
911: $editor->ReplaceLine($id, $newConfigLine);
912:
913: }
914: #
915: # ReplaceConfigFile:
916: # Replaces a configuration file with the contents of a
917: # configuration file editor object.
918: # This is done by:
919: # - Copying the target file to <filename>.old
920: # - Writing the new file to <filename>.tmp
921: # - Moving <filename.tmp> -> <filename>
922: # This laborious process ensures that the system is never without
923: # a configuration file that's at least valid (even if the contents
924: # may be dated).
925: # Parameters:
926: # filename - Name of the file to modify... this is a full path.
927: # editor - Editor containing the file.
928: #
929: sub ReplaceConfigFile {
1.192 foxr 930:
931: my ($filename, $editor) = @_;
1.168 foxr 932:
1.169 foxr 933: CopyFile ($filename, $filename.".old");
934:
935: my $contents = $editor->Get(); # Get the contents of the file.
936:
937: InstallFile($filename, $contents);
938: }
1.168 foxr 939: #
940: #
941: # Called to edit a configuration table file
1.167 foxr 942: # Parameters:
943: # request - The entire command/request sent by lonc or lonManage
944: # Return:
945: # The reply to send to the client.
1.168 foxr 946: #
1.167 foxr 947: sub EditFile {
948: my $request = shift;
949:
950: # Split the command into it's pieces: edit:filetype:script
951:
1.339 albertel 952: my ($cmd, $filetype, $script) = split(/:/, $request,3); # : in script
1.167 foxr 953:
954: # Check the pre-coditions for success:
955:
1.339 albertel 956: if($cmd != "edit") { # Something is amiss afoot alack.
1.167 foxr 957: return "error:edit request detected, but request != 'edit'\n";
958: }
959: if( ($filetype ne "hosts") &&
960: ($filetype ne "domain")) {
961: return "error:edit requested with invalid file specifier: $filetype \n";
962: }
963:
964: # Split the edit script and check it's validity.
1.168 foxr 965:
966: my @scriptlines = split(/\n/, $script); # one line per element.
967: my $linecount = scalar(@scriptlines);
968: for(my $i = 0; $i < $linecount; $i++) {
969: chomp($scriptlines[$i]);
970: if(!isValidEditCommand($scriptlines[$i])) {
971: return "error:edit with bad script line: '$scriptlines[$i]' \n";
972: }
973: }
1.145 foxr 974:
1.167 foxr 975: # Execute the edit operation.
1.169 foxr 976: # - Create a config file editor for the appropriate file and
977: # - execute each command in the script:
978: #
979: my $configfile = ConfigFileFromSelector($filetype);
980: if (!(defined $configfile)) {
981: return "refused\n";
982: }
983: my $editor = ConfigFileEdit->new($configfile);
1.167 foxr 984:
1.169 foxr 985: for (my $i = 0; $i < $linecount; $i++) {
986: ApplyEdit($scriptlines[$i], $editor);
987: }
988: # If the file is the host file, ensure that our host is
989: # adjusted to have our ip:
990: #
991: if($filetype eq "host") {
992: AdjustOurHost($editor);
993: }
994: # Finally replace the current file with our file.
995: #
996: ReplaceConfigFile($configfile, $editor);
1.167 foxr 997:
998: return "ok\n";
999: }
1.207 foxr 1000:
1.255 foxr 1001: # read_profile
1002: #
1003: # Returns a set of specific entries from a user's profile file.
1004: # this is a utility function that is used by both get_profile_entry and
1005: # get_profile_entry_encrypted.
1006: #
1007: # Parameters:
1008: # udom - Domain in which the user exists.
1009: # uname - User's account name (loncapa account)
1010: # namespace - The profile namespace to open.
1011: # what - A set of & separated queries.
1012: # Returns:
1013: # If all ok: - The string that needs to be shipped back to the user.
1014: # If failure - A string that starts with error: followed by the failure
1015: # reason.. note that this probabyl gets shipped back to the
1016: # user as well.
1017: #
1018: sub read_profile {
1019: my ($udom, $uname, $namespace, $what) = @_;
1020:
1021: my $hashref = &tie_user_hash($udom, $uname, $namespace,
1022: &GDBM_READER());
1023: if ($hashref) {
1024: my @queries=split(/\&/,$what);
1.440 raeburn 1025: if ($namespace eq 'roles') {
1026: @queries = map { &unescape($_); } @queries;
1027: }
1.255 foxr 1028: my $qresult='';
1029:
1030: for (my $i=0;$i<=$#queries;$i++) {
1031: $qresult.="$hashref->{$queries[$i]}&"; # Presumably failure gives empty string.
1032: }
1033: $qresult=~s/\&$//; # Remove trailing & from last lookup.
1.311 albertel 1034: if (&untie_user_hash($hashref)) {
1.255 foxr 1035: return $qresult;
1036: } else {
1037: return "error: ".($!+0)." untie (GDBM) Failed";
1038: }
1039: } else {
1040: if ($!+0 == 2) {
1041: return "error:No such file or GDBM reported bad block error";
1042: } else {
1043: return "error: ".($!+0)." tie (GDBM) Failed";
1044: }
1045: }
1046:
1047: }
1.214 foxr 1048: #--------------------- Request Handlers --------------------------------------------
1049: #
1.215 foxr 1050: # By convention each request handler registers itself prior to the sub
1051: # declaration:
1.214 foxr 1052: #
1053:
1.216 foxr 1054: #++
1055: #
1.214 foxr 1056: # Handles ping requests.
1057: # Parameters:
1058: # $cmd - the actual keyword that invoked us.
1059: # $tail - the tail of the request that invoked us.
1060: # $replyfd- File descriptor connected to the client
1061: # Implicit Inputs:
1062: # $currenthostid - Global variable that carries the name of the host we are
1063: # known as.
1064: # Returns:
1065: # 1 - Ok to continue processing.
1066: # 0 - Program should exit.
1067: # Side effects:
1068: # Reply information is sent to the client.
1069: sub ping_handler {
1070: my ($cmd, $tail, $client) = @_;
1071: Debug("$cmd $tail $client .. $currenthostid:");
1072:
1.387 albertel 1073: Reply( $client,\$currenthostid,"$cmd:$tail");
1.214 foxr 1074:
1075: return 1;
1076: }
1077: ®ister_handler("ping", \&ping_handler, 0, 1, 1); # Ping unencoded, client or manager.
1078:
1.216 foxr 1079: #++
1.215 foxr 1080: #
1081: # Handles pong requests. Pong replies with our current host id, and
1082: # the results of a ping sent to us via our lonc.
1083: #
1084: # Parameters:
1085: # $cmd - the actual keyword that invoked us.
1086: # $tail - the tail of the request that invoked us.
1087: # $replyfd- File descriptor connected to the client
1088: # Implicit Inputs:
1089: # $currenthostid - Global variable that carries the name of the host we are
1090: # connected to.
1091: # Returns:
1092: # 1 - Ok to continue processing.
1093: # 0 - Program should exit.
1094: # Side effects:
1095: # Reply information is sent to the client.
1096: sub pong_handler {
1097: my ($cmd, $tail, $replyfd) = @_;
1098:
1.365 albertel 1099: my $reply=&Apache::lonnet::reply("ping",$clientname);
1.215 foxr 1100: &Reply( $replyfd, "$currenthostid:$reply\n", "$cmd:$tail");
1101: return 1;
1102: }
1103: ®ister_handler("pong", \&pong_handler, 0, 1, 1); # Pong unencoded, client or manager
1104:
1.216 foxr 1105: #++
1106: # Called to establish an encrypted session key with the remote client.
1107: # Note that with secure lond, in most cases this function is never
1108: # invoked. Instead, the secure session key is established either
1109: # via a local file that's locked down tight and only lives for a short
1110: # time, or via an ssl tunnel...and is generated from a bunch-o-random
1111: # bits from /dev/urandom, rather than the predictable pattern used by
1112: # by this sub. This sub is only used in the old-style insecure
1113: # key negotiation.
1114: # Parameters:
1115: # $cmd - the actual keyword that invoked us.
1116: # $tail - the tail of the request that invoked us.
1117: # $replyfd- File descriptor connected to the client
1118: # Implicit Inputs:
1119: # $currenthostid - Global variable that carries the name of the host
1120: # known as.
1.448 raeburn 1121: # $clientname - Global variable that carries the name of the host we're connected to.
1.216 foxr 1122: # Returns:
1123: # 1 - Ok to continue processing.
1124: # 0 - Program should exit.
1125: # Implicit Outputs:
1126: # Reply information is sent to the client.
1127: # $cipher is set with a reference to a new IDEA encryption object.
1128: #
1129: sub establish_key_handler {
1130: my ($cmd, $tail, $replyfd) = @_;
1131:
1132: my $buildkey=time.$$.int(rand 100000);
1133: $buildkey=~tr/1-6/A-F/;
1134: $buildkey=int(rand 100000).$buildkey.int(rand 100000);
1135: my $key=$currenthostid.$clientname;
1136: $key=~tr/a-z/A-Z/;
1137: $key=~tr/G-P/0-9/;
1138: $key=~tr/Q-Z/0-9/;
1139: $key=$key.$buildkey.$key.$buildkey.$key.$buildkey;
1140: $key=substr($key,0,32);
1141: my $cipherkey=pack("H32",$key);
1142: $cipher=new IDEA $cipherkey;
1.387 albertel 1143: &Reply($replyfd, \$buildkey, "$cmd:$tail");
1.216 foxr 1144:
1145: return 1;
1146:
1147: }
1148: ®ister_handler("ekey", \&establish_key_handler, 0, 1,1);
1149:
1.217 foxr 1150: # Handler for the load command. Returns the current system load average
1151: # to the requestor.
1152: #
1153: # Parameters:
1154: # $cmd - the actual keyword that invoked us.
1155: # $tail - the tail of the request that invoked us.
1156: # $replyfd- File descriptor connected to the client
1157: # Implicit Inputs:
1158: # $currenthostid - Global variable that carries the name of the host
1159: # known as.
1.448 raeburn 1160: # $clientname - Global variable that carries the name of the host we're connected to.
1.217 foxr 1161: # Returns:
1162: # 1 - Ok to continue processing.
1163: # 0 - Program should exit.
1164: # Side effects:
1165: # Reply information is sent to the client.
1166: sub load_handler {
1167: my ($cmd, $tail, $replyfd) = @_;
1168:
1.463 foxr 1169:
1170:
1.217 foxr 1171: # Get the load average from /proc/loadavg and calculate it as a percentage of
1172: # the allowed load limit as set by the perl global variable lonLoadLim
1173:
1174: my $loadavg;
1175: my $loadfile=IO::File->new('/proc/loadavg');
1176:
1177: $loadavg=<$loadfile>;
1178: $loadavg =~ s/\s.*//g; # Extract the first field only.
1179:
1180: my $loadpercent=100*$loadavg/$perlvar{'lonLoadLim'};
1181:
1.387 albertel 1182: &Reply( $replyfd, \$loadpercent, "$cmd:$tail");
1.217 foxr 1183:
1184: return 1;
1185: }
1.263 albertel 1186: ®ister_handler("load", \&load_handler, 0, 1, 0);
1.217 foxr 1187:
1188: #
1189: # Process the userload request. This sub returns to the client the current
1190: # user load average. It can be invoked either by clients or managers.
1191: #
1192: # Parameters:
1193: # $cmd - the actual keyword that invoked us.
1194: # $tail - the tail of the request that invoked us.
1195: # $replyfd- File descriptor connected to the client
1196: # Implicit Inputs:
1197: # $currenthostid - Global variable that carries the name of the host
1198: # known as.
1.448 raeburn 1199: # $clientname - Global variable that carries the name of the host we're connected to.
1.217 foxr 1200: # Returns:
1201: # 1 - Ok to continue processing.
1202: # 0 - Program should exit
1203: # Implicit inputs:
1204: # whatever the userload() function requires.
1205: # Implicit outputs:
1206: # the reply is written to the client.
1207: #
1208: sub user_load_handler {
1209: my ($cmd, $tail, $replyfd) = @_;
1210:
1.365 albertel 1211: my $userloadpercent=&Apache::lonnet::userload();
1.387 albertel 1212: &Reply($replyfd, \$userloadpercent, "$cmd:$tail");
1.217 foxr 1213:
1214: return 1;
1215: }
1.263 albertel 1216: ®ister_handler("userload", \&user_load_handler, 0, 1, 0);
1.217 foxr 1217:
1.218 foxr 1218: # Process a request for the authorization type of a user:
1219: # (userauth).
1220: #
1221: # Parameters:
1222: # $cmd - the actual keyword that invoked us.
1223: # $tail - the tail of the request that invoked us.
1224: # $replyfd- File descriptor connected to the client
1225: # Returns:
1226: # 1 - Ok to continue processing.
1227: # 0 - Program should exit
1228: # Implicit outputs:
1229: # The user authorization type is written to the client.
1230: #
1231: sub user_authorization_type {
1232: my ($cmd, $tail, $replyfd) = @_;
1233:
1234: my $userinput = "$cmd:$tail";
1235:
1236: # Pull the domain and username out of the command tail.
1.222 foxr 1237: # and call get_auth_type to determine the authentication type.
1.218 foxr 1238:
1239: my ($udom,$uname)=split(/:/,$tail);
1.222 foxr 1240: my $result = &get_auth_type($udom, $uname);
1.218 foxr 1241: if($result eq "nouser") {
1242: &Failure( $replyfd, "unknown_user\n", $userinput);
1243: } else {
1244: #
1.222 foxr 1245: # We only want to pass the second field from get_auth_type
1.218 foxr 1246: # for ^krb.. otherwise we'll be handing out the encrypted
1247: # password for internals e.g.
1248: #
1249: my ($type,$otherinfo) = split(/:/,$result);
1250: if($type =~ /^krb/) {
1251: $type = $result;
1.269 raeburn 1252: } else {
1253: $type .= ':';
1254: }
1.387 albertel 1255: &Reply( $replyfd, \$type, $userinput);
1.218 foxr 1256: }
1257:
1258: return 1;
1259: }
1260: ®ister_handler("currentauth", \&user_authorization_type, 1, 1, 0);
1261:
1262: # Process a request by a manager to push a hosts or domain table
1263: # to us. We pick apart the command and pass it on to the subs
1264: # that already exist to do this.
1265: #
1266: # Parameters:
1267: # $cmd - the actual keyword that invoked us.
1268: # $tail - the tail of the request that invoked us.
1269: # $client - File descriptor connected to the client
1270: # Returns:
1271: # 1 - Ok to continue processing.
1272: # 0 - Program should exit
1273: # Implicit Output:
1274: # a reply is written to the client.
1275: sub push_file_handler {
1276: my ($cmd, $tail, $client) = @_;
1.412 foxr 1277: &Debug("In push file handler");
1.218 foxr 1278: my $userinput = "$cmd:$tail";
1279:
1280: # At this time we only know that the IP of our partner is a valid manager
1281: # the code below is a hook to do further authentication (e.g. to resolve
1282: # spoofing).
1283:
1284: my $cert = &GetCertificate($userinput);
1.412 foxr 1285: if(&ValidManager($cert)) {
1286: &Debug("Valid manager: $client");
1.218 foxr 1287:
1288: # Now presumably we have the bona fides of both the peer host and the
1289: # process making the request.
1290:
1291: my $reply = &PushFile($userinput);
1.387 albertel 1292: &Reply($client, \$reply, $userinput);
1.218 foxr 1293:
1294: } else {
1.412 foxr 1295: &logthis("push_file_handler $client is not valid");
1.218 foxr 1296: &Failure( $client, "refused\n", $userinput);
1297: }
1.219 foxr 1298: return 1;
1.218 foxr 1299: }
1300: ®ister_handler("pushfile", \&push_file_handler, 1, 0, 1);
1301:
1.399 raeburn 1302: # The du_handler routine should be considered obsolete and is retained
1303: # for communication with legacy servers. Please see the du2_handler.
1.243 banghart 1304: #
1.399 raeburn 1305: # du - list the disk usage of a directory recursively.
1.243 banghart 1306: #
1307: # note: stolen code from the ls file handler
1308: # under construction by Rick Banghart
1309: # .
1310: # Parameters:
1311: # $cmd - The command that dispatched us (du).
1312: # $ududir - The directory path to list... I'm not sure what this
1313: # is relative as things like ls:. return e.g.
1314: # no_such_dir.
1315: # $client - Socket open on the client.
1316: # Returns:
1317: # 1 - indicating that the daemon should not disconnect.
1318: # Side Effects:
1319: # The reply is written to $client.
1320: #
1321: sub du_handler {
1322: my ($cmd, $ududir, $client) = @_;
1.339 albertel 1323: ($ududir) = split(/:/,$ududir); # Make 'telnet' testing easier.
1.251 foxr 1324: my $userinput = "$cmd:$ududir";
1325:
1.245 albertel 1326: if ($ududir=~/\.\./ || $ududir!~m|^/home/httpd/|) {
1327: &Failure($client,"refused\n","$cmd:$ududir");
1328: return 1;
1329: }
1.249 foxr 1330: # Since $ududir could have some nasties in it,
1331: # we will require that ududir is a valid
1332: # directory. Just in case someone tries to
1333: # slip us a line like .;(cd /home/httpd rm -rf*)
1334: # etc.
1335: #
1336: if (-d $ududir) {
1.292 albertel 1337: my $total_size=0;
1338: my $code=sub {
1339: if ($_=~/\.\d+\./) { return;}
1340: if ($_=~/\.meta$/) { return;}
1.362 albertel 1341: if (-d $_) { return;}
1.292 albertel 1342: $total_size+=(stat($_))[7];
1343: };
1.295 raeburn 1344: chdir($ududir);
1.292 albertel 1345: find($code,$ududir);
1346: $total_size=int($total_size/1024);
1.387 albertel 1347: &Reply($client,\$total_size,"$cmd:$ududir");
1.249 foxr 1348: } else {
1.251 foxr 1349: &Failure($client, "bad_directory:$ududir\n","$cmd:$ududir");
1.249 foxr 1350: }
1.243 banghart 1351: return 1;
1352: }
1353: ®ister_handler("du", \&du_handler, 0, 1, 0);
1.218 foxr 1354:
1.399 raeburn 1355: # Please also see the du_handler, which is obsoleted by du2.
1356: # du2_handler differs from du_handler in that required path to directory
1357: # provided by &propath() is prepended in the handler instead of on the
1358: # client side.
1.239 foxr 1359: #
1.399 raeburn 1360: # du2 - list the disk usage of a directory recursively.
1361: #
1362: # Parameters:
1363: # $cmd - The command that dispatched us (du).
1364: # $tail - The tail of the request that invoked us.
1365: # $tail is a : separated list of the following:
1366: # - $ududir - directory path to list (before prepending)
1367: # - $getpropath = 1 if &propath() should prepend
1368: # - $uname - username to use for &propath or user dir
1369: # - $udom - domain to use for &propath or user dir
1370: # All are escaped.
1371: # $client - Socket open on the client.
1372: # Returns:
1373: # 1 - indicating that the daemon should not disconnect.
1374: # Side Effects:
1375: # The reply is written to $client.
1376: #
1377:
1378: sub du2_handler {
1379: my ($cmd, $tail, $client) = @_;
1380: my ($ududir,$getpropath,$uname,$udom) = map { &unescape($_) } (split(/:/, $tail));
1381: my $userinput = "$cmd:$tail";
1382: if (($ududir=~/\.\./) || (($ududir!~m|^/home/httpd/|) && (!$getpropath))) {
1383: &Failure($client,"refused\n","$cmd:$tail");
1384: return 1;
1385: }
1386: if ($getpropath) {
1387: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1388: $ududir = &propath($udom,$uname).'/'.$ududir;
1389: } else {
1390: &Failure($client,"refused\n","$cmd:$tail");
1391: return 1;
1392: }
1393: }
1394: # Since $ududir could have some nasties in it,
1395: # we will require that ududir is a valid
1396: # directory. Just in case someone tries to
1397: # slip us a line like .;(cd /home/httpd rm -rf*)
1398: # etc.
1399: #
1400: if (-d $ududir) {
1401: my $total_size=0;
1402: my $code=sub {
1403: if ($_=~/\.\d+\./) { return;}
1404: if ($_=~/\.meta$/) { return;}
1405: if (-d $_) { return;}
1406: $total_size+=(stat($_))[7];
1407: };
1408: chdir($ududir);
1409: find($code,$ududir);
1410: $total_size=int($total_size/1024);
1411: &Reply($client,\$total_size,"$cmd:$ududir");
1412: } else {
1413: &Failure($client, "bad_directory:$ududir\n","$cmd:$tail");
1414: }
1415: return 1;
1416: }
1417: ®ister_handler("du2", \&du2_handler, 0, 1, 0);
1418:
1419: #
1420: # The ls_handler routine should be considered obsolete and is retained
1421: # for communication with legacy servers. Please see the ls3_handler.
1.280 matthew 1422: #
1.239 foxr 1423: # ls - list the contents of a directory. For each file in the
1424: # selected directory the filename followed by the full output of
1425: # the stat function is returned. The returned info for each
1426: # file are separated by ':'. The stat fields are separated by &'s.
1427: # Parameters:
1428: # $cmd - The command that dispatched us (ls).
1429: # $ulsdir - The directory path to list... I'm not sure what this
1430: # is relative as things like ls:. return e.g.
1431: # no_such_dir.
1432: # $client - Socket open on the client.
1433: # Returns:
1434: # 1 - indicating that the daemon should not disconnect.
1435: # Side Effects:
1436: # The reply is written to $client.
1437: #
1438: sub ls_handler {
1.280 matthew 1439: # obsoleted by ls2_handler
1.239 foxr 1440: my ($cmd, $ulsdir, $client) = @_;
1441:
1442: my $userinput = "$cmd:$ulsdir";
1443:
1444: my $obs;
1445: my $rights;
1446: my $ulsout='';
1447: my $ulsfn;
1448: if (-e $ulsdir) {
1449: if(-d $ulsdir) {
1450: if (opendir(LSDIR,$ulsdir)) {
1451: while ($ulsfn=readdir(LSDIR)) {
1.291 albertel 1452: undef($obs);
1453: undef($rights);
1.239 foxr 1454: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1455: #We do some obsolete checking here
1456: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1457: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1458: my @obsolete=<FILE>;
1459: foreach my $obsolete (@obsolete) {
1.301 www 1460: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1.239 foxr 1461: if($obsolete =~ m|(<copyright>)(default)|) { $rights = 1; }
1462: }
1463: }
1464: $ulsout.=$ulsfn.'&'.join('&',@ulsstats);
1465: if($obs eq '1') { $ulsout.="&1"; }
1466: else { $ulsout.="&0"; }
1467: if($rights eq '1') { $ulsout.="&1:"; }
1468: else { $ulsout.="&0:"; }
1469: }
1470: closedir(LSDIR);
1471: }
1472: } else {
1473: my @ulsstats=stat($ulsdir);
1474: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1475: }
1476: } else {
1477: $ulsout='no_such_dir';
1478: }
1479: if ($ulsout eq '') { $ulsout='empty'; }
1.387 albertel 1480: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1.239 foxr 1481:
1482: return 1;
1483:
1484: }
1485: ®ister_handler("ls", \&ls_handler, 0, 1, 0);
1486:
1.399 raeburn 1487: # The ls2_handler routine should be considered obsolete and is retained
1488: # for communication with legacy servers. Please see the ls3_handler.
1489: # Please also see the ls_handler, which was itself obsoleted by ls2.
1.280 matthew 1490: # ls2_handler differs from ls_handler in that it escapes its return
1491: # values before concatenating them together with ':'s.
1492: #
1493: # ls2 - list the contents of a directory. For each file in the
1494: # selected directory the filename followed by the full output of
1495: # the stat function is returned. The returned info for each
1496: # file are separated by ':'. The stat fields are separated by &'s.
1497: # Parameters:
1498: # $cmd - The command that dispatched us (ls).
1499: # $ulsdir - The directory path to list... I'm not sure what this
1500: # is relative as things like ls:. return e.g.
1501: # no_such_dir.
1502: # $client - Socket open on the client.
1503: # Returns:
1504: # 1 - indicating that the daemon should not disconnect.
1505: # Side Effects:
1506: # The reply is written to $client.
1507: #
1508: sub ls2_handler {
1509: my ($cmd, $ulsdir, $client) = @_;
1510:
1511: my $userinput = "$cmd:$ulsdir";
1512:
1513: my $obs;
1514: my $rights;
1515: my $ulsout='';
1516: my $ulsfn;
1517: if (-e $ulsdir) {
1518: if(-d $ulsdir) {
1519: if (opendir(LSDIR,$ulsdir)) {
1520: while ($ulsfn=readdir(LSDIR)) {
1.291 albertel 1521: undef($obs);
1522: undef($rights);
1.280 matthew 1523: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1524: #We do some obsolete checking here
1525: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1526: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1527: my @obsolete=<FILE>;
1528: foreach my $obsolete (@obsolete) {
1.301 www 1529: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1.280 matthew 1530: if($obsolete =~ m|(<copyright>)(default)|) {
1531: $rights = 1;
1532: }
1533: }
1534: }
1535: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1536: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1537: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1538: $ulsout.= &escape($tmp).':';
1539: }
1540: closedir(LSDIR);
1541: }
1542: } else {
1543: my @ulsstats=stat($ulsdir);
1544: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1545: }
1546: } else {
1547: $ulsout='no_such_dir';
1548: }
1549: if ($ulsout eq '') { $ulsout='empty'; }
1.387 albertel 1550: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1.280 matthew 1551: return 1;
1552: }
1553: ®ister_handler("ls2", \&ls2_handler, 0, 1, 0);
1.399 raeburn 1554: #
1555: # ls3 - list the contents of a directory. For each file in the
1556: # selected directory the filename followed by the full output of
1557: # the stat function is returned. The returned info for each
1558: # file are separated by ':'. The stat fields are separated by &'s.
1559: # Parameters:
1560: # $cmd - The command that dispatched us (ls).
1561: # $tail - The tail of the request that invoked us.
1562: # $tail is a : separated list of the following:
1563: # - $ulsdir - directory path to list (before prepending)
1564: # - $getpropath = 1 if &propath() should prepend
1565: # - $getuserdir = 1 if path to user dir in lonUsers should
1566: # prepend
1567: # - $alternate_root - path to prepend
1568: # - $uname - username to use for &propath or user dir
1569: # - $udom - domain to use for &propath or user dir
1570: # All of these except $getpropath and &getuserdir are escaped.
1571: # no_such_dir.
1572: # $client - Socket open on the client.
1573: # Returns:
1574: # 1 - indicating that the daemon should not disconnect.
1575: # Side Effects:
1576: # The reply is written to $client.
1577: #
1578:
1579: sub ls3_handler {
1580: my ($cmd, $tail, $client) = @_;
1581: my $userinput = "$cmd:$tail";
1582: my ($ulsdir,$getpropath,$getuserdir,$alternate_root,$uname,$udom) =
1583: split(/:/,$tail);
1584: if (defined($ulsdir)) {
1585: $ulsdir = &unescape($ulsdir);
1586: }
1587: if (defined($alternate_root)) {
1588: $alternate_root = &unescape($alternate_root);
1589: }
1590: if (defined($uname)) {
1591: $uname = &unescape($uname);
1592: }
1593: if (defined($udom)) {
1594: $udom = &unescape($udom);
1595: }
1596:
1597: my $dir_root = $perlvar{'lonDocRoot'};
1598: if ($getpropath) {
1599: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1600: $dir_root = &propath($udom,$uname);
1601: $dir_root =~ s/\/$//;
1602: } else {
1603: &Failure($client,"refused\n","$cmd:$tail");
1604: return 1;
1605: }
1606: } elsif ($getuserdir) {
1607: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1608: my $subdir=$uname.'__';
1609: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
1610: $dir_root = $Apache::lonnet::perlvar{'lonUsersDir'}
1611: ."/$udom/$subdir/$uname";
1612: } else {
1613: &Failure($client,"refused\n","$cmd:$tail");
1614: return 1;
1615: }
1.400 raeburn 1616: } elsif ($alternate_root ne '') {
1.399 raeburn 1617: $dir_root = $alternate_root;
1618: }
1.408 raeburn 1619: if (($dir_root ne '') && ($dir_root ne '/')) {
1.400 raeburn 1620: if ($ulsdir =~ /^\//) {
1621: $ulsdir = $dir_root.$ulsdir;
1622: } else {
1623: $ulsdir = $dir_root.'/'.$ulsdir;
1624: }
1.399 raeburn 1625: }
1626: my $obs;
1627: my $rights;
1628: my $ulsout='';
1629: my $ulsfn;
1630: if (-e $ulsdir) {
1631: if(-d $ulsdir) {
1632: if (opendir(LSDIR,$ulsdir)) {
1633: while ($ulsfn=readdir(LSDIR)) {
1634: undef($obs);
1635: undef($rights);
1636: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1637: #We do some obsolete checking here
1638: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1639: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1640: my @obsolete=<FILE>;
1641: foreach my $obsolete (@obsolete) {
1642: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1643: if($obsolete =~ m|(<copyright>)(default)|) {
1644: $rights = 1;
1645: }
1646: }
1647: }
1648: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1649: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1650: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1651: $ulsout.= &escape($tmp).':';
1652: }
1653: closedir(LSDIR);
1654: }
1655: } else {
1656: my @ulsstats=stat($ulsdir);
1657: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1658: }
1659: } else {
1660: $ulsout='no_such_dir';
1.400 raeburn 1661: }
1662: if ($ulsout eq '') { $ulsout='empty'; }
1663: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1664: return 1;
1.399 raeburn 1665: }
1666: ®ister_handler("ls3", \&ls3_handler, 0, 1, 0);
1.280 matthew 1667:
1.477 raeburn 1668: sub read_lonnet_global {
1669: my ($cmd,$tail,$client) = @_;
1670: my $userinput = "$cmd:$tail";
1671: my $requested = &Apache::lonnet::thaw_unescape($tail);
1672: my $result;
1.480 raeburn 1673: my %packagevars = (
1674: spareid => \%Apache::lonnet::spareid,
1675: perlvar => \%Apache::lonnet::perlvar,
1676: );
1677: my %limit_to = (
1678: perlvar => {
1679: lonOtherAuthen => 1,
1680: lonBalancer => 1,
1681: lonVersion => 1,
1682: lonSysEMail => 1,
1683: lonHostID => 1,
1684: lonRole => 1,
1685: lonDefDomain => 1,
1686: lonLoadLim => 1,
1687: lonUserLoadLim => 1,
1688: }
1689: );
1.477 raeburn 1690: if (ref($requested) eq 'HASH') {
1691: foreach my $what (keys(%{$requested})) {
1692: my $response;
1.480 raeburn 1693: my $items = {};
1694: if (exists($packagevars{$what})) {
1695: if (ref($limit_to{$what}) eq 'HASH') {
1696: foreach my $varname (keys(%{$packagevars{$what}})) {
1697: if ($limit_to{$what}{$varname}) {
1698: $items->{$varname} = $packagevars{$what}{$varname};
1699: }
1700: }
1701: } else {
1702: $items = $packagevars{$what};
1.477 raeburn 1703: }
1.480 raeburn 1704: if ($what eq 'perlvar') {
1705: if (!exists($packagevars{$what}{'lonBalancer'})) {
1706: if ($dist =~ /^(centos|rhes|fedora|scientific)/) {
1707: my $othervarref=LONCAPA::Configuration::read_conf('httpd.conf');
1708: if (ref($othervarref) eq 'HASH') {
1709: $items->{'lonBalancer'} = $othervarref->{'lonBalancer'};
1710: }
1711: }
1712: }
1.477 raeburn 1713: }
1.480 raeburn 1714: $response = &Apache::lonnet::freeze_escape($items);
1.477 raeburn 1715: }
1.478 raeburn 1716: $result .= &escape($what).'='.$response.'&';
1.477 raeburn 1717: }
1718: }
1719: $result =~ s/\&$//;
1720: &Reply($client,\$result,$userinput);
1721: return 1;
1722: }
1723: ®ister_handler("readlonnetglobal", \&read_lonnet_global, 0, 1, 0);
1724:
1.479 raeburn 1725: sub server_devalidatecache_handler {
1726: my ($cmd,$tail,$client) = @_;
1727: my $userinput = "$cmd:$tail";
1.503 raeburn 1728: my $items = &unescape($tail);
1729: my @cached = split(/\&/,$items);
1730: foreach my $key (@cached) {
1731: if ($key =~ /:/) {
1732: my ($name,$id) = map { &unescape($_); } split(/:/,$key);
1733: &Apache::lonnet::devalidate_cache_new($name,$id);
1734: }
1735: }
1.479 raeburn 1736: my $result = 'ok';
1737: &Reply($client,\$result,$userinput);
1738: return 1;
1739: }
1.481 raeburn 1740: ®ister_handler("devalidatecache", \&server_devalidatecache_handler, 0, 1, 0);
1.479 raeburn 1741:
1.410 raeburn 1742: sub server_timezone_handler {
1743: my ($cmd,$tail,$client) = @_;
1744: my $userinput = "$cmd:$tail";
1745: my $timezone;
1746: my $clockfile = '/etc/sysconfig/clock'; # Fedora/CentOS/SuSE
1747: my $tzfile = '/etc/timezone'; # Debian/Ubuntu
1748: if (-e $clockfile) {
1749: if (open(my $fh,"<$clockfile")) {
1750: while (<$fh>) {
1751: next if (/^[\#\s]/);
1752: if (/^(?:TIME)?ZONE\s*=\s*['"]?\s*([\w\/]+)/) {
1753: $timezone = $1;
1754: last;
1755: }
1756: }
1757: close($fh);
1758: }
1759: } elsif (-e $tzfile) {
1760: if (open(my $fh,"<$tzfile")) {
1761: $timezone = <$fh>;
1762: close($fh);
1763: chomp($timezone);
1764: if ($timezone =~ m{^Etc/(\w+)$}) {
1765: $timezone = $1;
1766: }
1767: }
1768: }
1769: &Reply($client,\$timezone,$userinput); # This supports debug logging.
1770: return 1;
1771: }
1772: ®ister_handler("servertimezone", \&server_timezone_handler, 0, 1, 0);
1773:
1.413 raeburn 1774: sub server_loncaparev_handler {
1775: my ($cmd,$tail,$client) = @_;
1776: my $userinput = "$cmd:$tail";
1777: &Reply($client,\$perlvar{'lonVersion'},$userinput);
1778: return 1;
1779: }
1780: ®ister_handler("serverloncaparev", \&server_loncaparev_handler, 0, 1, 0);
1781:
1.448 raeburn 1782: sub server_homeID_handler {
1783: my ($cmd,$tail,$client) = @_;
1784: my $userinput = "$cmd:$tail";
1785: &Reply($client,\$perlvar{'lonHostID'},$userinput);
1786: return 1;
1787: }
1788: ®ister_handler("serverhomeID", \&server_homeID_handler, 0, 1, 0);
1789:
1.471 raeburn 1790: sub server_distarch_handler {
1791: my ($cmd,$tail,$client) = @_;
1792: my $userinput = "$cmd:$tail";
1793: my $reply = &distro_and_arch();
1794: &Reply($client,\$reply,$userinput);
1795: return 1;
1796: }
1797: ®ister_handler("serverdistarch", \&server_distarch_handler, 0, 1, 0);
1798:
1.523 raeburn 1799: sub server_certs_handler {
1800: my ($cmd,$tail,$client) = @_;
1801: my $userinput = "$cmd:$tail";
1802: my $result;
1803: my $result = &LONCAPA::Lond::server_certs(\%perlvar);
1804: &Reply($client,\$result,$userinput);
1805: return;
1806: }
1807: ®ister_handler("servercerts", \&server_certs_handler, 0, 1, 0);
1808:
1.218 foxr 1809: # Process a reinit request. Reinit requests that either
1810: # lonc or lond be reinitialized so that an updated
1811: # host.tab or domain.tab can be processed.
1812: #
1813: # Parameters:
1814: # $cmd - the actual keyword that invoked us.
1815: # $tail - the tail of the request that invoked us.
1816: # $client - File descriptor connected to the client
1817: # Returns:
1818: # 1 - Ok to continue processing.
1819: # 0 - Program should exit
1820: # Implicit output:
1821: # a reply is sent to the client.
1822: #
1823: sub reinit_process_handler {
1824: my ($cmd, $tail, $client) = @_;
1825:
1826: my $userinput = "$cmd:$tail";
1827:
1828: my $cert = &GetCertificate($userinput);
1829: if(&ValidManager($cert)) {
1830: chomp($userinput);
1831: my $reply = &ReinitProcess($userinput);
1.387 albertel 1832: &Reply( $client, \$reply, $userinput);
1.218 foxr 1833: } else {
1834: &Failure( $client, "refused\n", $userinput);
1835: }
1836: return 1;
1837: }
1838: ®ister_handler("reinit", \&reinit_process_handler, 1, 0, 1);
1839:
1840: # Process the editing script for a table edit operation.
1841: # the editing operation must be encrypted and requested by
1842: # a manager host.
1843: #
1844: # Parameters:
1845: # $cmd - the actual keyword that invoked us.
1846: # $tail - the tail of the request that invoked us.
1847: # $client - File descriptor connected to the client
1848: # Returns:
1849: # 1 - Ok to continue processing.
1850: # 0 - Program should exit
1851: # Implicit output:
1852: # a reply is sent to the client.
1853: #
1854: sub edit_table_handler {
1855: my ($command, $tail, $client) = @_;
1856:
1857: my $userinput = "$command:$tail";
1858:
1859: my $cert = &GetCertificate($userinput);
1860: if(&ValidManager($cert)) {
1861: my($filetype, $script) = split(/:/, $tail);
1862: if (($filetype eq "hosts") ||
1863: ($filetype eq "domain")) {
1864: if($script ne "") {
1865: &Reply($client, # BUGBUG - EditFile
1866: &EditFile($userinput), # could fail.
1867: $userinput);
1868: } else {
1869: &Failure($client,"refused\n",$userinput);
1870: }
1871: } else {
1872: &Failure($client,"refused\n",$userinput);
1873: }
1874: } else {
1875: &Failure($client,"refused\n",$userinput);
1876: }
1877: return 1;
1878: }
1.263 albertel 1879: ®ister_handler("edit", \&edit_table_handler, 1, 0, 1);
1.218 foxr 1880:
1.220 foxr 1881: #
1882: # Authenticate a user against the LonCAPA authentication
1883: # database. Note that there are several authentication
1884: # possibilities:
1885: # - unix - The user can be authenticated against the unix
1886: # password file.
1887: # - internal - The user can be authenticated against a purely
1888: # internal per user password file.
1889: # - kerberos - The user can be authenticated against either a kerb4 or kerb5
1890: # ticket granting authority.
1891: # - user - The person tailoring LonCAPA can supply a user authentication
1892: # mechanism that is per system.
1893: #
1894: # Parameters:
1895: # $cmd - The command that got us here.
1896: # $tail - Tail of the command (remaining parameters).
1897: # $client - File descriptor connected to client.
1898: # Returns
1899: # 0 - Requested to exit, caller should shut down.
1900: # 1 - Continue processing.
1901: # Implicit inputs:
1902: # The authentication systems describe above have their own forms of implicit
1903: # input into the authentication process that are described above.
1904: #
1905: sub authenticate_handler {
1906: my ($cmd, $tail, $client) = @_;
1907:
1908:
1909: # Regenerate the full input line
1910:
1911: my $userinput = $cmd.":".$tail;
1912:
1913: # udom - User's domain.
1914: # uname - Username.
1915: # upass - User's password.
1.396 raeburn 1916: # checkdefauth - Pass to validate_user() to try authentication
1917: # with default auth type(s) if no user account.
1.447 raeburn 1918: # clientcancheckhost - Passed by clients with functionality in lonauth.pm
1919: # to check if session can be hosted.
1.220 foxr 1920:
1.447 raeburn 1921: my ($udom, $uname, $upass, $checkdefauth, $clientcancheckhost)=split(/:/,$tail);
1.399 raeburn 1922: &Debug(" Authenticate domain = $udom, user = $uname, password = $upass, checkdefauth = $checkdefauth");
1.220 foxr 1923: chomp($upass);
1924: $upass=&unescape($upass);
1925:
1.396 raeburn 1926: my $pwdcorrect = &validate_user($udom,$uname,$upass,$checkdefauth);
1.220 foxr 1927: if($pwdcorrect) {
1.447 raeburn 1928: my $canhost = 1;
1929: unless ($clientcancheckhost) {
1.448 raeburn 1930: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1931: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1.452 raeburn 1932: my @intdoms;
1933: my $internet_names = &Apache::lonnet::get_internet_names($clientname);
1934: if (ref($internet_names) eq 'ARRAY') {
1935: @intdoms = @{$internet_names};
1936: }
1.448 raeburn 1937: unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
1.447 raeburn 1938: my ($remote,$hosted);
1939: my $remotesession = &get_usersession_config($udom,'remotesession');
1940: if (ref($remotesession) eq 'HASH') {
1941: $remote = $remotesession->{'remote'}
1942: }
1.448 raeburn 1943: my $hostedsession = &get_usersession_config($clienthomedom,'hostedsession');
1.447 raeburn 1944: if (ref($hostedsession) eq 'HASH') {
1945: $hosted = $hostedsession->{'hosted'};
1946: }
1.448 raeburn 1947: $canhost = &Apache::lonnet::can_host_session($udom,$clientname,
1.492 droeschl 1948: $clientversion,
1.447 raeburn 1949: $remote,$hosted);
1950: }
1951: }
1952: if ($canhost) {
1953: &Reply( $client, "authorized\n", $userinput);
1954: } else {
1955: &Reply( $client, "not_allowed_to_host\n", $userinput);
1956: }
1.220 foxr 1957: #
1958: # Bad credentials: Failed to authorize
1959: #
1960: } else {
1961: &Failure( $client, "non_authorized\n", $userinput);
1962: }
1963:
1964: return 1;
1965: }
1.263 albertel 1966: ®ister_handler("auth", \&authenticate_handler, 1, 1, 0);
1.214 foxr 1967:
1.222 foxr 1968: #
1969: # Change a user's password. Note that this function is complicated by
1970: # the fact that a user may be authenticated in more than one way:
1971: # At present, we are not able to change the password for all types of
1972: # authentication methods. Only for:
1973: # unix - unix password or shadow passoword style authentication.
1974: # local - Locally written authentication mechanism.
1975: # For now, kerb4 and kerb5 password changes are not supported and result
1976: # in an error.
1977: # FUTURE WORK:
1978: # Support kerberos passwd changes?
1979: # Parameters:
1980: # $cmd - The command that got us here.
1981: # $tail - Tail of the command (remaining parameters).
1982: # $client - File descriptor connected to client.
1983: # Returns
1984: # 0 - Requested to exit, caller should shut down.
1985: # 1 - Continue processing.
1986: # Implicit inputs:
1987: # The authentication systems describe above have their own forms of implicit
1988: # input into the authentication process that are described above.
1989: sub change_password_handler {
1990: my ($cmd, $tail, $client) = @_;
1991:
1992: my $userinput = $cmd.":".$tail; # Reconstruct client's string.
1993:
1994: #
1995: # udom - user's domain.
1996: # uname - Username.
1997: # upass - Current password.
1998: # npass - New password.
1.346 raeburn 1999: # context - Context in which this was called
2000: # (preferences or reset_by_email).
1.428 raeburn 2001: # lonhost - HostID of server where request originated
1.222 foxr 2002:
1.428 raeburn 2003: my ($udom,$uname,$upass,$npass,$context,$lonhost)=split(/:/,$tail);
1.222 foxr 2004:
2005: $upass=&unescape($upass);
2006: $npass=&unescape($npass);
2007: &Debug("Trying to change password for $uname");
2008:
2009: # First require that the user can be authenticated with their
1.346 raeburn 2010: # old password unless context was 'reset_by_email':
2011:
1.428 raeburn 2012: my ($validated,$failure);
1.346 raeburn 2013: if ($context eq 'reset_by_email') {
1.428 raeburn 2014: if ($lonhost eq '') {
2015: $failure = 'invalid_client';
2016: } else {
2017: $validated = 1;
2018: }
1.346 raeburn 2019: } else {
2020: $validated = &validate_user($udom, $uname, $upass);
2021: }
1.222 foxr 2022: if($validated) {
2023: my $realpasswd = &get_auth_type($udom, $uname); # Defined since authd.
2024:
2025: my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
2026: if ($howpwd eq 'internal') {
2027: &Debug("internal auth");
1.518 raeburn 2028: my $ncpass = &hash_passwd($udom,$npass);
1.222 foxr 2029: if(&rewrite_password_file($udom, $uname, "internal:$ncpass")) {
1.428 raeburn 2030: my $msg="Result of password change for $uname: pwchange_success";
2031: if ($lonhost) {
2032: $msg .= " - request originated from: $lonhost";
2033: }
2034: &logthis($msg);
1.518 raeburn 2035: &update_passwd_history($uname,$udom,$howpwd,$context);
1.222 foxr 2036: &Reply($client, "ok\n", $userinput);
2037: } else {
2038: &logthis("Unable to open $uname passwd "
2039: ."to change password");
2040: &Failure( $client, "non_authorized\n",$userinput);
2041: }
1.346 raeburn 2042: } elsif ($howpwd eq 'unix' && $context ne 'reset_by_email') {
1.287 foxr 2043: my $result = &change_unix_password($uname, $npass);
1.518 raeburn 2044: if ($result eq 'ok') {
2045: &update_passwd_history($uname,$udom,$howpwd,$context);
2046: }
1.222 foxr 2047: &logthis("Result of password change for $uname: ".
1.287 foxr 2048: $result);
1.387 albertel 2049: &Reply($client, \$result, $userinput);
1.222 foxr 2050: } else {
2051: # this just means that the current password mode is not
2052: # one we know how to change (e.g the kerberos auth modes or
2053: # locally written auth handler).
2054: #
2055: &Failure( $client, "auth_mode_error\n", $userinput);
2056: }
2057:
1.224 foxr 2058: } else {
1.428 raeburn 2059: if ($failure eq '') {
2060: $failure = 'non_authorized';
2061: }
2062: &Failure( $client, "$failure\n", $userinput);
1.222 foxr 2063: }
2064:
2065: return 1;
2066: }
1.263 albertel 2067: ®ister_handler("passwd", \&change_password_handler, 1, 1, 0);
1.222 foxr 2068:
1.518 raeburn 2069: sub hash_passwd {
2070: my ($domain,$plainpass,@rest) = @_;
2071: my ($salt,$cost);
2072: if (@rest) {
2073: $cost = $rest[0];
2074: # salt is first 22 characters, base-64 encoded by bcrypt
2075: my $plainsalt = substr($rest[1],0,22);
2076: $salt = Crypt::Eksblowfish::Bcrypt::de_base64($plainsalt);
2077: } else {
2078: my $defaultcost;
2079: my %domconfig =
2080: &Apache::lonnet::get_dom('configuration',['password'],$domain);
2081: if (ref($domconfig{'password'}) eq 'HASH') {
2082: $defaultcost = $domconfig{'password'}{'cost'};
2083: }
2084: if (($defaultcost eq '') || ($defaultcost =~ /D/)) {
2085: $cost = 10;
2086: } else {
2087: $cost = $defaultcost;
2088: }
2089: # Generate random 16-octet base64 salt
2090: $salt = "";
2091: $salt .= pack("C", int rand(256)) for 1..16;
2092: }
2093: my $hash = &Crypt::Eksblowfish::Bcrypt::bcrypt_hash({
2094: key_nul => 1,
2095: cost => $cost,
2096: salt => $salt,
2097: }, Digest::SHA::sha512(Encode::encode('UTF-8',$plainpass)));
2098:
2099: my $result = join("!", "", "bcrypt", sprintf("%02d",$cost),
2100: &Crypt::Eksblowfish::Bcrypt::en_base64($salt).
2101: &Crypt::Eksblowfish::Bcrypt::en_base64($hash));
2102: return $result;
2103: }
2104:
1.225 foxr 2105: #
2106: # Create a new user. User in this case means a lon-capa user.
2107: # The user must either already exist in some authentication realm
2108: # like kerberos or the /etc/passwd. If not, a user completely local to
2109: # this loncapa system is created.
2110: #
2111: # Parameters:
2112: # $cmd - The command that got us here.
2113: # $tail - Tail of the command (remaining parameters).
2114: # $client - File descriptor connected to client.
2115: # Returns
2116: # 0 - Requested to exit, caller should shut down.
2117: # 1 - Continue processing.
2118: # Implicit inputs:
2119: # The authentication systems describe above have their own forms of implicit
2120: # input into the authentication process that are described above.
2121: sub add_user_handler {
2122:
2123: my ($cmd, $tail, $client) = @_;
2124:
2125:
2126: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2127: my $userinput = $cmd.":".$tail; # Reconstruct the full request line.
2128:
2129: &Debug("cmd =".$cmd." $udom =".$udom." uname=".$uname);
2130:
2131:
2132: if($udom eq $currentdomainid) { # Reject new users for other domains...
2133:
2134: my $oldumask=umask(0077);
2135: chomp($npass);
2136: $npass=&unescape($npass);
2137: my $passfilename = &password_path($udom, $uname);
2138: &Debug("Password file created will be:".$passfilename);
2139: if (-e $passfilename) {
2140: &Failure( $client, "already_exists\n", $userinput);
2141: } else {
2142: my $fperror='';
1.264 albertel 2143: if (!&mkpath($passfilename)) {
2144: $fperror="error: ".($!+0)." mkdir failed while attempting "
2145: ."makeuser";
1.225 foxr 2146: }
2147: unless ($fperror) {
1.518 raeburn 2148: my $result=&make_passwd_file($uname,$udom,$umode,$npass,
2149: $passfilename,'makeuser');
1.390 raeburn 2150: &Reply($client,\$result, $userinput); #BUGBUG - could be fail
1.225 foxr 2151: } else {
1.387 albertel 2152: &Failure($client, \$fperror, $userinput);
1.225 foxr 2153: }
2154: }
2155: umask($oldumask);
2156: } else {
2157: &Failure($client, "not_right_domain\n",
2158: $userinput); # Even if we are multihomed.
2159:
2160: }
2161: return 1;
2162:
2163: }
2164: ®ister_handler("makeuser", \&add_user_handler, 1, 1, 0);
2165:
2166: #
2167: # Change the authentication method of a user. Note that this may
2168: # also implicitly change the user's password if, for example, the user is
2169: # joining an existing authentication realm. Known authentication realms at
2170: # this time are:
2171: # internal - Purely internal password file (only loncapa knows this user)
2172: # local - Institutionally written authentication module.
2173: # unix - Unix user (/etc/passwd with or without /etc/shadow).
2174: # kerb4 - kerberos version 4
2175: # kerb5 - kerberos version 5
2176: #
2177: # Parameters:
2178: # $cmd - The command that got us here.
2179: # $tail - Tail of the command (remaining parameters).
2180: # $client - File descriptor connected to client.
2181: # Returns
2182: # 0 - Requested to exit, caller should shut down.
2183: # 1 - Continue processing.
2184: # Implicit inputs:
2185: # The authentication systems describe above have their own forms of implicit
2186: # input into the authentication process that are described above.
1.287 foxr 2187: # NOTE:
2188: # This is also used to change the authentication credential values (e.g. passwd).
2189: #
1.225 foxr 2190: #
2191: sub change_authentication_handler {
2192:
2193: my ($cmd, $tail, $client) = @_;
2194:
2195: my $userinput = "$cmd:$tail"; # Reconstruct user input.
2196:
2197: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2198: &Debug("cmd = ".$cmd." domain= ".$udom."uname =".$uname." umode= ".$umode);
2199: if ($udom ne $currentdomainid) {
2200: &Failure( $client, "not_right_domain\n", $client);
2201: } else {
2202:
2203: chomp($npass);
2204:
2205: $npass=&unescape($npass);
1.261 foxr 2206: my $oldauth = &get_auth_type($udom, $uname); # Get old auth info.
1.225 foxr 2207: my $passfilename = &password_path($udom, $uname);
2208: if ($passfilename) { # Not allowed to create a new user!!
1.287 foxr 2209: # If just changing the unix passwd. need to arrange to run
1.502 raeburn 2210: # passwd since otherwise make_passwd_file will fail as
2211: # creation of unix authenticated users is no longer supported
2212: # except from the command line, when running make_domain_coordinator.pl
1.287 foxr 2213:
2214: if(($oldauth =~/^unix/) && ($umode eq "unix")) {
2215: my $result = &change_unix_password($uname, $npass);
2216: &logthis("Result of password change for $uname: ".$result);
2217: if ($result eq "ok") {
1.518 raeburn 2218: &update_passwd_history($uname,$udom,$umode,'changeuserauth');
1.390 raeburn 2219: &Reply($client, \$result);
1.288 albertel 2220: } else {
1.387 albertel 2221: &Failure($client, \$result);
1.287 foxr 2222: }
1.288 albertel 2223: } else {
1.518 raeburn 2224: my $result=&make_passwd_file($uname,$udom,$umode,$npass,
2225: $passfilename,'changeuserauth');
1.287 foxr 2226: #
2227: # If the current auth mode is internal, and the old auth mode was
2228: # unix, or krb*, and the user is an author for this domain,
2229: # re-run manage_permissions for that role in order to be able
2230: # to take ownership of the construction space back to www:www
2231: #
1.502 raeburn 2232:
2233:
1.387 albertel 2234: &Reply($client, \$result, $userinput);
1.261 foxr 2235: }
2236:
2237:
1.225 foxr 2238: } else {
1.251 foxr 2239: &Failure($client, "non_authorized\n", $userinput); # Fail the user now.
1.225 foxr 2240: }
2241: }
2242: return 1;
2243: }
2244: ®ister_handler("changeuserauth", \&change_authentication_handler, 1,1, 0);
2245:
1.518 raeburn 2246: sub update_passwd_history {
2247: my ($uname,$udom,$umode,$context) = @_;
2248: my $proname=&propath($udom,$uname);
2249: my $now = time;
2250: if (open(my $fh,">>$proname/passwd.log")) {
2251: print $fh "$now:$umode:$context\n";
2252: close($fh);
2253: }
2254: return;
2255: }
2256:
1.225 foxr 2257: #
2258: # Determines if this is the home server for a user. The home server
2259: # for a user will have his/her lon-capa passwd file. Therefore all we need
2260: # to do is determine if this file exists.
2261: #
2262: # Parameters:
2263: # $cmd - The command that got us here.
2264: # $tail - Tail of the command (remaining parameters).
2265: # $client - File descriptor connected to client.
2266: # Returns
2267: # 0 - Requested to exit, caller should shut down.
2268: # 1 - Continue processing.
2269: # Implicit inputs:
2270: # The authentication systems describe above have their own forms of implicit
2271: # input into the authentication process that are described above.
2272: #
2273: sub is_home_handler {
2274: my ($cmd, $tail, $client) = @_;
2275:
2276: my $userinput = "$cmd:$tail";
2277:
2278: my ($udom,$uname)=split(/:/,$tail);
2279: chomp($uname);
2280: my $passfile = &password_filename($udom, $uname);
2281: if($passfile) {
2282: &Reply( $client, "found\n", $userinput);
2283: } else {
2284: &Failure($client, "not_found\n", $userinput);
2285: }
2286: return 1;
2287: }
2288: ®ister_handler("home", \&is_home_handler, 0,1,0);
2289:
2290: #
1.434 www 2291: # Process an update request for a resource.
2292: # A resource has been modified that we hold a subscription to.
1.225 foxr 2293: # If the resource is not local, then we must update, or at least invalidate our
2294: # cached copy of the resource.
2295: # Parameters:
2296: # $cmd - The command that got us here.
2297: # $tail - Tail of the command (remaining parameters).
2298: # $client - File descriptor connected to client.
2299: # Returns
2300: # 0 - Requested to exit, caller should shut down.
2301: # 1 - Continue processing.
2302: # Implicit inputs:
2303: # The authentication systems describe above have their own forms of implicit
2304: # input into the authentication process that are described above.
2305: #
2306: sub update_resource_handler {
2307:
2308: my ($cmd, $tail, $client) = @_;
2309:
2310: my $userinput = "$cmd:$tail";
2311:
2312: my $fname= $tail; # This allows interactive testing
2313:
2314:
2315: my $ownership=ishome($fname);
2316: if ($ownership eq 'not_owner') {
2317: if (-e $fname) {
1.434 www 2318: # Delete preview file, if exists
2319: unlink("$fname.tmp");
2320: # Get usage stats
1.225 foxr 2321: my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
2322: $atime,$mtime,$ctime,$blksize,$blocks)=stat($fname);
2323: my $now=time;
2324: my $since=$now-$atime;
1.434 www 2325: # If the file has not been used within lonExpire seconds,
2326: # unsubscribe from it and delete local copy
1.225 foxr 2327: if ($since>$perlvar{'lonExpire'}) {
1.365 albertel 2328: my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
1.308 albertel 2329: &devalidate_meta_cache($fname);
1.225 foxr 2330: unlink("$fname");
1.334 albertel 2331: unlink("$fname.meta");
1.225 foxr 2332: } else {
1.434 www 2333: # Yes, this is in active use. Get a fresh copy. Since it might be in
2334: # very active use and huge (like a movie), copy it to "in.transfer" filename first.
1.225 foxr 2335: my $transname="$fname.in.transfer";
1.365 albertel 2336: my $remoteurl=&Apache::lonnet::reply("sub:$fname","$clientname");
1.225 foxr 2337: my $response;
1.455 www 2338: # FIXME: cannot replicate files that take more than two minutes to transfer?
2339: # alarm(120);
2340: # FIXME: this should use the LWP mechanism, not internal alarms.
2341: alarm(1200);
1.225 foxr 2342: {
2343: my $request=new HTTP::Request('GET',"$remoteurl");
1.523 raeburn 2344: $response=&LONCAPA::LWPReq::makerequest($clientname,$request,$transname,\%perlvar,1200,0,1);
1.225 foxr 2345: }
2346: alarm(0);
2347: if ($response->is_error()) {
1.455 www 2348: # FIXME: we should probably clean up here instead of just whine
1.225 foxr 2349: unlink($transname);
2350: my $message=$response->status_line;
2351: &logthis("LWP GET: $message for $fname ($remoteurl)");
2352: } else {
2353: if ($remoteurl!~/\.meta$/) {
1.455 www 2354: # FIXME: isn't there an internal LWP mechanism for this?
1.225 foxr 2355: alarm(120);
2356: {
2357: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
1.523 raeburn 2358: my $mresponse = &LONCAPA::LWPReq::makerequest($clientname,$mrequest,$fname.'.meta',\%perlvar,120,0,1);
1.225 foxr 2359: if ($mresponse->is_error()) {
2360: unlink($fname.'.meta');
2361: }
2362: }
2363: alarm(0);
2364: }
1.434 www 2365: # we successfully transfered, copy file over to real name
1.225 foxr 2366: rename($transname,$fname);
1.308 albertel 2367: &devalidate_meta_cache($fname);
1.225 foxr 2368: }
2369: }
2370: &Reply( $client, "ok\n", $userinput);
2371: } else {
2372: &Failure($client, "not_found\n", $userinput);
2373: }
2374: } else {
2375: &Failure($client, "rejected\n", $userinput);
2376: }
2377: return 1;
2378: }
2379: ®ister_handler("update", \&update_resource_handler, 0 ,1, 0);
2380:
1.308 albertel 2381: sub devalidate_meta_cache {
2382: my ($url) = @_;
2383: use Cache::Memcached;
2384: my $memcache = new Cache::Memcached({'servers'=>['127.0.0.1:11211']});
1.365 albertel 2385: $url = &Apache::lonnet::declutter($url);
1.308 albertel 2386: $url =~ s-\.meta$--;
2387: my $id = &escape('meta:'.$url);
2388: $memcache->delete($id);
2389: }
2390:
1.225 foxr 2391: #
1.226 foxr 2392: # Fetch a user file from a remote server to the user's home directory
2393: # userfiles subdir.
1.225 foxr 2394: # Parameters:
2395: # $cmd - The command that got us here.
2396: # $tail - Tail of the command (remaining parameters).
2397: # $client - File descriptor connected to client.
2398: # Returns
2399: # 0 - Requested to exit, caller should shut down.
2400: # 1 - Continue processing.
2401: #
2402: sub fetch_user_file_handler {
2403:
2404: my ($cmd, $tail, $client) = @_;
2405:
2406: my $userinput = "$cmd:$tail";
2407: my $fname = $tail;
1.232 foxr 2408: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
1.225 foxr 2409: my $udir=&propath($udom,$uname).'/userfiles';
2410: unless (-e $udir) {
2411: mkdir($udir,0770);
2412: }
1.232 foxr 2413: Debug("fetch user file for $fname");
1.225 foxr 2414: if (-e $udir) {
2415: $ufile=~s/^[\.\~]+//;
1.232 foxr 2416:
2417: # IF necessary, create the path right down to the file.
2418: # Note that any regular files in the way of this path are
2419: # wiped out to deal with some earlier folly of mine.
2420:
1.267 raeburn 2421: if (!&mkpath($udir.'/'.$ufile)) {
1.264 albertel 2422: &Failure($client, "unable_to_create\n", $userinput);
1.232 foxr 2423: }
2424:
1.225 foxr 2425: my $destname=$udir.'/'.$ufile;
2426: my $transname=$udir.'/'.$ufile.'.in.transit';
1.476 raeburn 2427: my $clientprotocol=$Apache::lonnet::protocol{$clientname};
2428: $clientprotocol = 'http' if ($clientprotocol ne 'https');
1.486 raeburn 2429: my $clienthost = &Apache::lonnet::hostname($clientname);
2430: my $remoteurl=$clientprotocol.'://'.$clienthost.'/userfiles/'.$fname;
1.225 foxr 2431: my $response;
1.232 foxr 2432: Debug("Remote URL : $remoteurl Transfername $transname Destname: $destname");
1.523 raeburn 2433: alarm(1200);
1.225 foxr 2434: {
2435: my $request=new HTTP::Request('GET',"$remoteurl");
1.523 raeburn 2436: my $verifycert = 1;
2437: my @machine_ids = &Apache::lonnet::current_machine_ids();
2438: if (grep(/^\Q$clientname\E$/,@machine_ids)) {
2439: $verifycert = 0;
2440: }
2441: $response = &LONCAPA::LWPReq::makerequest($clientname,$request,$transname,\%perlvar,1200,$verifycert);
1.225 foxr 2442: }
2443: alarm(0);
2444: if ($response->is_error()) {
2445: unlink($transname);
2446: my $message=$response->status_line;
2447: &logthis("LWP GET: $message for $fname ($remoteurl)");
2448: &Failure($client, "failed\n", $userinput);
2449: } else {
1.232 foxr 2450: Debug("Renaming $transname to $destname");
1.225 foxr 2451: if (!rename($transname,$destname)) {
2452: &logthis("Unable to move $transname to $destname");
2453: unlink($transname);
2454: &Failure($client, "failed\n", $userinput);
2455: } else {
1.495 raeburn 2456: if ($fname =~ /^default.+\.(page|sequence)$/) {
2457: my ($major,$minor) = split(/\./,$clientversion);
2458: if (($major < 2) || ($major == 2 && $minor < 11)) {
2459: my $now = time;
2460: &Apache::lonnet::do_cache_new('crschange',$udom.'_'.$uname,$now,600);
2461: my $key = &escape('internal.contentchange');
2462: my $what = "$key=$now";
2463: my $hashref = &tie_user_hash($udom,$uname,'environment',
2464: &GDBM_WRCREAT(),"P",$what);
2465: if ($hashref) {
2466: $hashref->{$key}=$now;
2467: if (!&untie_user_hash($hashref)) {
2468: &logthis("error: ".($!+0)." untie (GDBM) failed ".
2469: "when updating internal.contentchange");
2470: }
2471: }
2472: }
2473: }
1.225 foxr 2474: &Reply($client, "ok\n", $userinput);
2475: }
2476: }
2477: } else {
2478: &Failure($client, "not_home\n", $userinput);
2479: }
2480: return 1;
2481: }
2482: ®ister_handler("fetchuserfile", \&fetch_user_file_handler, 0, 1, 0);
2483:
1.226 foxr 2484: #
2485: # Remove a file from a user's home directory userfiles subdirectory.
2486: # Parameters:
2487: # cmd - the Lond request keyword that got us here.
2488: # tail - the part of the command past the keyword.
2489: # client- File descriptor connected with the client.
2490: #
2491: # Returns:
2492: # 1 - Continue processing.
2493: sub remove_user_file_handler {
2494: my ($cmd, $tail, $client) = @_;
2495:
2496: my ($fname) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2497:
2498: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
2499: if ($ufile =~m|/\.\./|) {
2500: # any files paths with /../ in them refuse
2501: # to deal with
2502: &Failure($client, "refused\n", "$cmd:$tail");
2503: } else {
2504: my $udir = &propath($udom,$uname);
2505: if (-e $udir) {
2506: my $file=$udir.'/userfiles/'.$ufile;
2507: if (-e $file) {
1.253 foxr 2508: #
2509: # If the file is a regular file unlink is fine...
1.520 raeburn 2510: # However it's possible the client wants a dir
2511: # removed, in which case rmdir is more appropriate.
2512: # Note: rmdir will only remove an empty directory.
1.253 foxr 2513: #
1.240 banghart 2514: if (-f $file){
1.241 albertel 2515: unlink($file);
1.520 raeburn 2516: # for html files remove the associated .bak file
2517: # which may have been created by the editor.
2518: if ($ufile =~ m{^((docs|supplemental)/(?:\d+|default)/\d+(?:|/.+)/)[^/]+\.x?html?$}i) {
2519: my $path = $1;
2520: if (-e $file.'.bak') {
2521: unlink($file.'.bak');
2522: }
2523: }
1.241 albertel 2524: } elsif(-d $file) {
2525: rmdir($file);
1.240 banghart 2526: }
1.226 foxr 2527: if (-e $file) {
1.253 foxr 2528: # File is still there after we deleted it ?!?
2529:
1.226 foxr 2530: &Failure($client, "failed\n", "$cmd:$tail");
2531: } else {
2532: &Reply($client, "ok\n", "$cmd:$tail");
2533: }
2534: } else {
2535: &Failure($client, "not_found\n", "$cmd:$tail");
2536: }
2537: } else {
2538: &Failure($client, "not_home\n", "$cmd:$tail");
2539: }
2540: }
2541: return 1;
2542: }
2543: ®ister_handler("removeuserfile", \&remove_user_file_handler, 0,1,0);
2544:
1.236 albertel 2545: #
2546: # make a directory in a user's home directory userfiles subdirectory.
2547: # Parameters:
2548: # cmd - the Lond request keyword that got us here.
2549: # tail - the part of the command past the keyword.
2550: # client- File descriptor connected with the client.
2551: #
2552: # Returns:
2553: # 1 - Continue processing.
2554: sub mkdir_user_file_handler {
2555: my ($cmd, $tail, $client) = @_;
2556:
2557: my ($dir) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2558: $dir=&unescape($dir);
2559: my ($udom,$uname,$ufile) = ($dir =~ m|^([^/]+)/([^/]+)/(.+)$|);
2560: if ($ufile =~m|/\.\./|) {
2561: # any files paths with /../ in them refuse
2562: # to deal with
2563: &Failure($client, "refused\n", "$cmd:$tail");
2564: } else {
2565: my $udir = &propath($udom,$uname);
2566: if (-e $udir) {
1.264 albertel 2567: my $newdir=$udir.'/userfiles/'.$ufile.'/';
2568: if (!&mkpath($newdir)) {
2569: &Failure($client, "failed\n", "$cmd:$tail");
1.236 albertel 2570: }
1.264 albertel 2571: &Reply($client, "ok\n", "$cmd:$tail");
1.236 albertel 2572: } else {
2573: &Failure($client, "not_home\n", "$cmd:$tail");
2574: }
2575: }
2576: return 1;
2577: }
2578: ®ister_handler("mkdiruserfile", \&mkdir_user_file_handler, 0,1,0);
2579:
1.237 albertel 2580: #
2581: # rename a file in a user's home directory userfiles subdirectory.
2582: # Parameters:
2583: # cmd - the Lond request keyword that got us here.
2584: # tail - the part of the command past the keyword.
2585: # client- File descriptor connected with the client.
2586: #
2587: # Returns:
2588: # 1 - Continue processing.
2589: sub rename_user_file_handler {
2590: my ($cmd, $tail, $client) = @_;
2591:
2592: my ($udom,$uname,$old,$new) = split(/:/, $tail);
2593: $old=&unescape($old);
2594: $new=&unescape($new);
2595: if ($new =~m|/\.\./| || $old =~m|/\.\./|) {
2596: # any files paths with /../ in them refuse to deal with
2597: &Failure($client, "refused\n", "$cmd:$tail");
2598: } else {
2599: my $udir = &propath($udom,$uname);
2600: if (-e $udir) {
2601: my $oldfile=$udir.'/userfiles/'.$old;
2602: my $newfile=$udir.'/userfiles/'.$new;
2603: if (-e $newfile) {
2604: &Failure($client, "exists\n", "$cmd:$tail");
2605: } elsif (! -e $oldfile) {
2606: &Failure($client, "not_found\n", "$cmd:$tail");
2607: } else {
2608: if (!rename($oldfile,$newfile)) {
2609: &Failure($client, "failed\n", "$cmd:$tail");
2610: } else {
2611: &Reply($client, "ok\n", "$cmd:$tail");
2612: }
2613: }
2614: } else {
2615: &Failure($client, "not_home\n", "$cmd:$tail");
2616: }
2617: }
2618: return 1;
2619: }
2620: ®ister_handler("renameuserfile", \&rename_user_file_handler, 0,1,0);
2621:
1.227 foxr 2622: #
1.382 albertel 2623: # Checks if the specified user has an active session on the server
2624: # return ok if so, not_found if not
2625: #
2626: # Parameters:
2627: # cmd - The request keyword that dispatched to tus.
2628: # tail - The tail of the request (colon separated parameters).
2629: # client - Filehandle open on the client.
2630: # Return:
2631: # 1.
2632: sub user_has_session_handler {
2633: my ($cmd, $tail, $client) = @_;
2634:
2635: my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail));
2636:
2637: opendir(DIR,$perlvar{'lonIDsDir'});
2638: my $filename;
2639: while ($filename=readdir(DIR)) {
2640: last if ($filename=~/^\Q$uname\E_\d+_\Q$udom\E_/);
2641: }
2642: if ($filename) {
2643: &Reply($client, "ok\n", "$cmd:$tail");
2644: } else {
2645: &Failure($client, "not_found\n", "$cmd:$tail");
2646: }
2647: return 1;
2648:
2649: }
2650: ®ister_handler("userhassession", \&user_has_session_handler, 0,1,0);
2651:
2652: #
1.263 albertel 2653: # Authenticate access to a user file by checking that the token the user's
2654: # passed also exists in their session file
1.227 foxr 2655: #
2656: # Parameters:
2657: # cmd - The request keyword that dispatched to tus.
2658: # tail - The tail of the request (colon separated parameters).
2659: # client - Filehandle open on the client.
2660: # Return:
2661: # 1.
2662: sub token_auth_user_file_handler {
2663: my ($cmd, $tail, $client) = @_;
2664:
2665: my ($fname, $session) = split(/:/, $tail);
2666:
2667: chomp($session);
1.393 raeburn 2668: my $reply="non_auth";
1.343 albertel 2669: my $file = $perlvar{'lonIDsDir'}.'/'.$session.'.id';
2670: if (open(ENVIN,"$file")) {
1.332 albertel 2671: flock(ENVIN,LOCK_SH);
1.343 albertel 2672: tie(my %disk_env,'GDBM_File',"$file",&GDBM_READER(),0640);
2673: if (exists($disk_env{"userfile.$fname"})) {
1.393 raeburn 2674: $reply="ok";
1.343 albertel 2675: } else {
2676: foreach my $envname (keys(%disk_env)) {
2677: if ($envname=~ m|^userfile\.\Q$fname\E|) {
1.393 raeburn 2678: $reply="ok";
1.343 albertel 2679: last;
2680: }
2681: }
1.227 foxr 2682: }
1.343 albertel 2683: untie(%disk_env);
1.227 foxr 2684: close(ENVIN);
1.387 albertel 2685: &Reply($client, \$reply, "$cmd:$tail");
1.227 foxr 2686: } else {
2687: &Failure($client, "invalid_token\n", "$cmd:$tail");
2688: }
2689: return 1;
2690:
2691: }
2692: ®ister_handler("tokenauthuserfile", \&token_auth_user_file_handler, 0,1,0);
1.229 foxr 2693:
2694: #
2695: # Unsubscribe from a resource.
2696: #
2697: # Parameters:
2698: # $cmd - The command that got us here.
2699: # $tail - Tail of the command (remaining parameters).
2700: # $client - File descriptor connected to client.
2701: # Returns
2702: # 0 - Requested to exit, caller should shut down.
2703: # 1 - Continue processing.
2704: #
2705: sub unsubscribe_handler {
2706: my ($cmd, $tail, $client) = @_;
2707:
2708: my $userinput= "$cmd:$tail";
2709:
2710: my ($fname) = split(/:/,$tail); # Split in case there's extrs.
2711:
2712: &Debug("Unsubscribing $fname");
2713: if (-e $fname) {
2714: &Debug("Exists");
2715: &Reply($client, &unsub($fname,$clientip), $userinput);
2716: } else {
2717: &Failure($client, "not_found\n", $userinput);
2718: }
2719: return 1;
2720: }
2721: ®ister_handler("unsub", \&unsubscribe_handler, 0, 1, 0);
1.263 albertel 2722:
1.230 foxr 2723: # Subscribe to a resource
2724: #
2725: # Parameters:
2726: # $cmd - The command that got us here.
2727: # $tail - Tail of the command (remaining parameters).
2728: # $client - File descriptor connected to client.
2729: # Returns
2730: # 0 - Requested to exit, caller should shut down.
2731: # 1 - Continue processing.
2732: #
2733: sub subscribe_handler {
2734: my ($cmd, $tail, $client)= @_;
2735:
2736: my $userinput = "$cmd:$tail";
2737:
2738: &Reply( $client, &subscribe($userinput,$clientip), $userinput);
2739:
2740: return 1;
2741: }
2742: ®ister_handler("sub", \&subscribe_handler, 0, 1, 0);
2743:
2744: #
1.379 albertel 2745: # Determine the latest version of a resource (it looks for the highest
2746: # past version and then returns that +1)
1.230 foxr 2747: #
2748: # Parameters:
2749: # $cmd - The command that got us here.
2750: # $tail - Tail of the command (remaining parameters).
1.379 albertel 2751: # (Should consist of an absolute path to a file)
1.230 foxr 2752: # $client - File descriptor connected to client.
2753: # Returns
2754: # 0 - Requested to exit, caller should shut down.
2755: # 1 - Continue processing.
2756: #
2757: sub current_version_handler {
2758: my ($cmd, $tail, $client) = @_;
2759:
2760: my $userinput= "$cmd:$tail";
2761:
2762: my $fname = $tail;
2763: &Reply( $client, ¤tversion($fname)."\n", $userinput);
2764: return 1;
2765:
2766: }
2767: ®ister_handler("currentversion", \¤t_version_handler, 0, 1, 0);
2768:
2769: # Make an entry in a user's activity log.
2770: #
2771: # Parameters:
2772: # $cmd - The command that got us here.
2773: # $tail - Tail of the command (remaining parameters).
2774: # $client - File descriptor connected to client.
2775: # Returns
2776: # 0 - Requested to exit, caller should shut down.
2777: # 1 - Continue processing.
2778: #
2779: sub activity_log_handler {
2780: my ($cmd, $tail, $client) = @_;
2781:
2782:
2783: my $userinput= "$cmd:$tail";
2784:
2785: my ($udom,$uname,$what)=split(/:/,$tail);
2786: chomp($what);
2787: my $proname=&propath($udom,$uname);
2788: my $now=time;
2789: my $hfh;
2790: if ($hfh=IO::File->new(">>$proname/activity.log")) {
2791: print $hfh "$now:$clientname:$what\n";
2792: &Reply( $client, "ok\n", $userinput);
2793: } else {
2794: &Failure($client, "error: ".($!+0)." IO::File->new Failed "
2795: ."while attempting log\n",
2796: $userinput);
2797: }
2798:
2799: return 1;
2800: }
1.263 albertel 2801: ®ister_handler("log", \&activity_log_handler, 0, 1, 0);
1.230 foxr 2802:
2803: #
2804: # Put a namespace entry in a user profile hash.
2805: # My druthers would be for this to be an encrypted interaction too.
2806: # anything that might be an inadvertent covert channel about either
2807: # user authentication or user personal information....
2808: #
2809: # Parameters:
2810: # $cmd - The command that got us here.
2811: # $tail - Tail of the command (remaining parameters).
2812: # $client - File descriptor connected to client.
2813: # Returns
2814: # 0 - Requested to exit, caller should shut down.
2815: # 1 - Continue processing.
2816: #
2817: sub put_user_profile_entry {
2818: my ($cmd, $tail, $client) = @_;
1.229 foxr 2819:
1.230 foxr 2820: my $userinput = "$cmd:$tail";
2821:
1.242 raeburn 2822: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
1.230 foxr 2823: if ($namespace ne 'roles') {
2824: chomp($what);
2825: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2826: &GDBM_WRCREAT(),"P",$what);
2827: if($hashref) {
2828: my @pairs=split(/\&/,$what);
2829: foreach my $pair (@pairs) {
2830: my ($key,$value)=split(/=/,$pair);
2831: $hashref->{$key}=$value;
2832: }
1.311 albertel 2833: if (&untie_user_hash($hashref)) {
1.230 foxr 2834: &Reply( $client, "ok\n", $userinput);
2835: } else {
2836: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
2837: "while attempting put\n",
2838: $userinput);
2839: }
2840: } else {
1.316 albertel 2841: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.230 foxr 2842: "while attempting put\n", $userinput);
2843: }
2844: } else {
2845: &Failure( $client, "refused\n", $userinput);
2846: }
2847:
2848: return 1;
2849: }
2850: ®ister_handler("put", \&put_user_profile_entry, 0, 1, 0);
2851:
1.283 albertel 2852: # Put a piece of new data in hash, returns error if entry already exists
2853: # Parameters:
2854: # $cmd - The command that got us here.
2855: # $tail - Tail of the command (remaining parameters).
2856: # $client - File descriptor connected to client.
2857: # Returns
2858: # 0 - Requested to exit, caller should shut down.
2859: # 1 - Continue processing.
2860: #
2861: sub newput_user_profile_entry {
2862: my ($cmd, $tail, $client) = @_;
2863:
2864: my $userinput = "$cmd:$tail";
2865:
2866: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
2867: if ($namespace eq 'roles') {
2868: &Failure( $client, "refused\n", $userinput);
2869: return 1;
2870: }
2871:
2872: chomp($what);
2873:
2874: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2875: &GDBM_WRCREAT(),"N",$what);
2876: if(!$hashref) {
1.316 albertel 2877: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.283 albertel 2878: "while attempting put\n", $userinput);
2879: return 1;
2880: }
2881:
2882: my @pairs=split(/\&/,$what);
2883: foreach my $pair (@pairs) {
2884: my ($key,$value)=split(/=/,$pair);
2885: if (exists($hashref->{$key})) {
1.513 raeburn 2886: if (!&untie_user_hash($hashref)) {
2887: &logthis("error: ".($!+0)." untie (GDBM) failed ".
2888: "while attempting newput - early out as key exists");
2889: }
2890: &Failure($client, "key_exists: ".$key."\n",$userinput);
2891: return 1;
1.283 albertel 2892: }
2893: }
2894:
2895: foreach my $pair (@pairs) {
2896: my ($key,$value)=split(/=/,$pair);
2897: $hashref->{$key}=$value;
2898: }
2899:
1.311 albertel 2900: if (&untie_user_hash($hashref)) {
1.283 albertel 2901: &Reply( $client, "ok\n", $userinput);
2902: } else {
2903: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
2904: "while attempting put\n",
2905: $userinput);
2906: }
2907: return 1;
2908: }
2909: ®ister_handler("newput", \&newput_user_profile_entry, 0, 1, 0);
2910:
1.230 foxr 2911: #
2912: # Increment a profile entry in the user history file.
2913: # The history contains keyword value pairs. In this case,
2914: # The value itself is a pair of numbers. The first, the current value
2915: # the second an increment that this function applies to the current
2916: # value.
2917: #
2918: # Parameters:
2919: # $cmd - The command that got us here.
2920: # $tail - Tail of the command (remaining parameters).
2921: # $client - File descriptor connected to client.
2922: # Returns
2923: # 0 - Requested to exit, caller should shut down.
2924: # 1 - Continue processing.
2925: #
2926: sub increment_user_value_handler {
2927: my ($cmd, $tail, $client) = @_;
2928:
2929: my $userinput = "$cmd:$tail";
2930:
2931: my ($udom,$uname,$namespace,$what) =split(/:/,$tail);
2932: if ($namespace ne 'roles') {
2933: chomp($what);
2934: my $hashref = &tie_user_hash($udom, $uname,
2935: $namespace, &GDBM_WRCREAT(),
2936: "P",$what);
2937: if ($hashref) {
2938: my @pairs=split(/\&/,$what);
2939: foreach my $pair (@pairs) {
2940: my ($key,$value)=split(/=/,$pair);
1.284 raeburn 2941: $value = &unescape($value);
1.230 foxr 2942: # We could check that we have a number...
2943: if (! defined($value) || $value eq '') {
2944: $value = 1;
2945: }
2946: $hashref->{$key}+=$value;
1.284 raeburn 2947: if ($namespace eq 'nohist_resourcetracker') {
2948: if ($hashref->{$key} < 0) {
2949: $hashref->{$key} = 0;
2950: }
2951: }
1.230 foxr 2952: }
1.311 albertel 2953: if (&untie_user_hash($hashref)) {
1.230 foxr 2954: &Reply( $client, "ok\n", $userinput);
2955: } else {
2956: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
2957: "while attempting inc\n", $userinput);
2958: }
2959: } else {
2960: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
2961: "while attempting inc\n", $userinput);
2962: }
2963: } else {
2964: &Failure($client, "refused\n", $userinput);
2965: }
2966:
2967: return 1;
2968: }
2969: ®ister_handler("inc", \&increment_user_value_handler, 0, 1, 0);
2970:
2971: #
2972: # Put a new role for a user. Roles are LonCAPA's packaging of permissions.
2973: # Each 'role' a user has implies a set of permissions. Adding a new role
2974: # for a person grants the permissions packaged with that role
2975: # to that user when the role is selected.
2976: #
2977: # Parameters:
2978: # $cmd - The command string (rolesput).
2979: # $tail - The remainder of the request line. For rolesput this
2980: # consists of a colon separated list that contains:
2981: # The domain and user that is granting the role (logged).
2982: # The domain and user that is getting the role.
2983: # The roles being granted as a set of & separated pairs.
2984: # each pair a key value pair.
2985: # $client - File descriptor connected to the client.
2986: # Returns:
2987: # 0 - If the daemon should exit
2988: # 1 - To continue processing.
2989: #
2990: #
2991: sub roles_put_handler {
2992: my ($cmd, $tail, $client) = @_;
2993:
2994: my $userinput = "$cmd:$tail";
2995:
2996: my ( $exedom, $exeuser, $udom, $uname, $what) = split(/:/,$tail);
2997:
2998:
2999: my $namespace='roles';
3000: chomp($what);
3001: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3002: &GDBM_WRCREAT(), "P",
3003: "$exedom:$exeuser:$what");
3004: #
3005: # Log the attempt to set a role. The {}'s here ensure that the file
3006: # handle is open for the minimal amount of time. Since the flush
3007: # is done on close this improves the chances the log will be an un-
3008: # corrupted ordered thing.
3009: if ($hashref) {
1.261 foxr 3010: my $pass_entry = &get_auth_type($udom, $uname);
3011: my ($auth_type,$pwd) = split(/:/, $pass_entry);
3012: $auth_type = $auth_type.":";
1.230 foxr 3013: my @pairs=split(/\&/,$what);
3014: foreach my $pair (@pairs) {
3015: my ($key,$value)=split(/=/,$pair);
3016: &manage_permissions($key, $udom, $uname,
1.260 foxr 3017: $auth_type);
1.230 foxr 3018: $hashref->{$key}=$value;
3019: }
1.311 albertel 3020: if (&untie_user_hash($hashref)) {
1.230 foxr 3021: &Reply($client, "ok\n", $userinput);
3022: } else {
3023: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3024: "while attempting rolesput\n", $userinput);
3025: }
3026: } else {
3027: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3028: "while attempting rolesput\n", $userinput);
3029: }
3030: return 1;
3031: }
3032: ®ister_handler("rolesput", \&roles_put_handler, 1,1,0); # Encoded client only.
3033:
3034: #
1.231 foxr 3035: # Deletes (removes) a role for a user. This is equivalent to removing
3036: # a permissions package associated with the role from the user's profile.
3037: #
3038: # Parameters:
3039: # $cmd - The command (rolesdel)
3040: # $tail - The remainder of the request line. This consists
3041: # of:
3042: # The domain and user requesting the change (logged)
3043: # The domain and user being changed.
3044: # The roles being revoked. These are shipped to us
3045: # as a bunch of & separated role name keywords.
3046: # $client - The file handle open on the client.
3047: # Returns:
3048: # 1 - Continue processing
3049: # 0 - Exit.
3050: #
3051: sub roles_delete_handler {
3052: my ($cmd, $tail, $client) = @_;
3053:
3054: my $userinput = "$cmd:$tail";
3055:
3056: my ($exedom,$exeuser,$udom,$uname,$what)=split(/:/,$tail);
3057: &Debug("cmd = ".$cmd." exedom= ".$exedom."user = ".$exeuser." udom=".$udom.
3058: "what = ".$what);
3059: my $namespace='roles';
3060: chomp($what);
3061: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3062: &GDBM_WRCREAT(), "D",
3063: "$exedom:$exeuser:$what");
3064:
3065: if ($hashref) {
3066: my @rolekeys=split(/\&/,$what);
3067:
3068: foreach my $key (@rolekeys) {
3069: delete $hashref->{$key};
3070: }
1.315 albertel 3071: if (&untie_user_hash($hashref)) {
1.231 foxr 3072: &Reply($client, "ok\n", $userinput);
3073: } else {
3074: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3075: "while attempting rolesdel\n", $userinput);
3076: }
3077: } else {
3078: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3079: "while attempting rolesdel\n", $userinput);
3080: }
3081:
3082: return 1;
3083: }
3084: ®ister_handler("rolesdel", \&roles_delete_handler, 1,1, 0); # Encoded client only
3085:
3086: # Unencrypted get from a user's profile database. See
3087: # GetProfileEntryEncrypted for a version that does end-to-end encryption.
3088: # This function retrieves a keyed item from a specific named database in the
3089: # user's directory.
3090: #
3091: # Parameters:
3092: # $cmd - Command request keyword (get).
3093: # $tail - Tail of the command. This is a colon separated list
3094: # consisting of the domain and username that uniquely
3095: # identifies the profile,
3096: # The 'namespace' which selects the gdbm file to
3097: # do the lookup in,
3098: # & separated list of keys to lookup. Note that
3099: # the values are returned as an & separated list too.
3100: # $client - File descriptor open on the client.
3101: # Returns:
3102: # 1 - Continue processing.
3103: # 0 - Exit.
3104: #
3105: sub get_profile_entry {
3106: my ($cmd, $tail, $client) = @_;
3107:
3108: my $userinput= "$cmd:$tail";
3109:
3110: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3111: chomp($what);
1.255 foxr 3112:
1.390 raeburn 3113:
1.255 foxr 3114: my $replystring = read_profile($udom, $uname, $namespace, $what);
3115: my ($first) = split(/:/,$replystring);
3116: if($first ne "error") {
1.387 albertel 3117: &Reply($client, \$replystring, $userinput);
1.231 foxr 3118: } else {
1.255 foxr 3119: &Failure($client, $replystring." while attempting get\n", $userinput);
1.231 foxr 3120: }
3121: return 1;
1.255 foxr 3122:
3123:
1.231 foxr 3124: }
3125: ®ister_handler("get", \&get_profile_entry, 0,1,0);
3126:
3127: #
3128: # Process the encrypted get request. Note that the request is sent
3129: # in clear, but the reply is encrypted. This is a small covert channel:
3130: # information about the sensitive keys is given to the snooper. Just not
3131: # information about the values of the sensitive key. Hmm if I wanted to
3132: # know these I'd snoop for the egets. Get the profile item names from them
3133: # and then issue a get for them since there's no enforcement of the
3134: # requirement of an encrypted get for particular profile items. If I
3135: # were re-doing this, I'd force the request to be encrypted as well as the
3136: # reply. I'd also just enforce encrypted transactions for all gets since
3137: # that would prevent any covert channel snooping.
3138: #
3139: # Parameters:
3140: # $cmd - Command keyword of request (eget).
3141: # $tail - Tail of the command. See GetProfileEntry
# for more information about this.
3142: # $client - File open on the client.
3143: # Returns:
3144: # 1 - Continue processing
3145: # 0 - server should exit.
3146: sub get_profile_entry_encrypted {
3147: my ($cmd, $tail, $client) = @_;
3148:
3149: my $userinput = "$cmd:$tail";
3150:
1.339 albertel 3151: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
1.231 foxr 3152: chomp($what);
1.255 foxr 3153: my $qresult = read_profile($udom, $uname, $namespace, $what);
3154: my ($first) = split(/:/, $qresult);
3155: if($first ne "error") {
3156:
3157: if ($cipher) {
3158: my $cmdlength=length($qresult);
3159: $qresult.=" ";
3160: my $encqresult='';
3161: for(my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
3162: $encqresult.= unpack("H16",
3163: $cipher->encrypt(substr($qresult,
3164: $encidx,
3165: 8)));
3166: }
3167: &Reply( $client, "enc:$cmdlength:$encqresult\n", $userinput);
3168: } else {
1.231 foxr 3169: &Failure( $client, "error:no_key\n", $userinput);
3170: }
3171: } else {
1.255 foxr 3172: &Failure($client, "$qresult while attempting eget\n", $userinput);
3173:
1.231 foxr 3174: }
3175:
3176: return 1;
3177: }
1.255 foxr 3178: ®ister_handler("eget", \&get_profile_entry_encrypted, 0, 1, 0);
1.263 albertel 3179:
1.231 foxr 3180: #
3181: # Deletes a key in a user profile database.
3182: #
3183: # Parameters:
3184: # $cmd - Command keyword (del).
3185: # $tail - Command tail. IN this case a colon
3186: # separated list containing:
3187: # The domain and user that identifies uniquely
3188: # the identity of the user.
3189: # The profile namespace (name of the profile
3190: # database file).
3191: # & separated list of keywords to delete.
3192: # $client - File open on client socket.
3193: # Returns:
3194: # 1 - Continue processing
3195: # 0 - Exit server.
3196: #
3197: #
3198: sub delete_profile_entry {
3199: my ($cmd, $tail, $client) = @_;
3200:
3201: my $userinput = "cmd:$tail";
3202:
3203: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3204: chomp($what);
3205: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3206: &GDBM_WRCREAT(),
3207: "D",$what);
3208: if ($hashref) {
3209: my @keys=split(/\&/,$what);
3210: foreach my $key (@keys) {
3211: delete($hashref->{$key});
3212: }
1.315 albertel 3213: if (&untie_user_hash($hashref)) {
1.231 foxr 3214: &Reply($client, "ok\n", $userinput);
3215: } else {
3216: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3217: "while attempting del\n", $userinput);
3218: }
3219: } else {
3220: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3221: "while attempting del\n", $userinput);
3222: }
3223: return 1;
3224: }
3225: ®ister_handler("del", \&delete_profile_entry, 0, 1, 0);
1.263 albertel 3226:
1.231 foxr 3227: #
3228: # List the set of keys that are defined in a profile database file.
3229: # A successful reply from this will contain an & separated list of
3230: # the keys.
3231: # Parameters:
3232: # $cmd - Command request (keys).
3233: # $tail - Remainder of the request, a colon separated
3234: # list containing domain/user that identifies the
3235: # user being queried, and the database namespace
3236: # (database filename essentially).
3237: # $client - File open on the client.
3238: # Returns:
3239: # 1 - Continue processing.
3240: # 0 - Exit the server.
3241: #
3242: sub get_profile_keys {
3243: my ($cmd, $tail, $client) = @_;
3244:
3245: my $userinput = "$cmd:$tail";
3246:
3247: my ($udom,$uname,$namespace)=split(/:/,$tail);
3248: my $qresult='';
3249: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3250: &GDBM_READER());
3251: if ($hashref) {
3252: foreach my $key (keys %$hashref) {
3253: $qresult.="$key&";
3254: }
1.315 albertel 3255: if (&untie_user_hash($hashref)) {
1.231 foxr 3256: $qresult=~s/\&$//;
1.387 albertel 3257: &Reply($client, \$qresult, $userinput);
1.231 foxr 3258: } else {
3259: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3260: "while attempting keys\n", $userinput);
3261: }
3262: } else {
3263: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3264: "while attempting keys\n", $userinput);
3265: }
3266:
3267: return 1;
3268: }
3269: ®ister_handler("keys", \&get_profile_keys, 0, 1, 0);
3270:
3271: #
3272: # Dump the contents of a user profile database.
3273: # Note that this constitutes a very large covert channel too since
3274: # the dump will return sensitive information that is not encrypted.
3275: # The naive security assumption is that the session negotiation ensures
3276: # our client is trusted and I don't believe that's assured at present.
3277: # Sure want badly to go to ssl or tls. Of course if my peer isn't really
3278: # a LonCAPA node they could have negotiated an encryption key too so >sigh<.
3279: #
3280: # Parameters:
3281: # $cmd - The command request keyword (currentdump).
3282: # $tail - Remainder of the request, consisting of a colon
3283: # separated list that has the domain/username and
3284: # the namespace to dump (database file).
3285: # $client - file open on the remote client.
3286: # Returns:
3287: # 1 - Continue processing.
3288: # 0 - Exit the server.
3289: #
3290: sub dump_profile_database {
3291: my ($cmd, $tail, $client) = @_;
3292:
1.494 droeschl 3293: my $res = LONCAPA::Lond::dump_profile_database($tail);
3294:
3295: if ($res =~ /^error:/) {
3296: Failure($client, \$res, "$cmd:$tail");
3297: } else {
3298: Reply($client, \$res, "$cmd:$tail");
3299: }
3300:
3301: return 1;
3302:
3303: #TODO remove
1.231 foxr 3304: my $userinput = "$cmd:$tail";
3305:
3306: my ($udom,$uname,$namespace) = split(/:/,$tail);
3307: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3308: &GDBM_READER());
3309: if ($hashref) {
3310: # Structure of %data:
3311: # $data{$symb}->{$parameter}=$value;
3312: # $data{$symb}->{'v.'.$parameter}=$version;
3313: # since $parameter will be unescaped, we do not
3314: # have to worry about silly parameter names...
3315:
3316: my $qresult='';
3317: my %data = (); # A hash of anonymous hashes..
3318: while (my ($key,$value) = each(%$hashref)) {
3319: my ($v,$symb,$param) = split(/:/,$key);
3320: next if ($v eq 'version' || $symb eq 'keys');
3321: next if (exists($data{$symb}) &&
3322: exists($data{$symb}->{$param}) &&
3323: $data{$symb}->{'v.'.$param} > $v);
3324: $data{$symb}->{$param}=$value;
3325: $data{$symb}->{'v.'.$param}=$v;
3326: }
1.311 albertel 3327: if (&untie_user_hash($hashref)) {
1.231 foxr 3328: while (my ($symb,$param_hash) = each(%data)) {
3329: while(my ($param,$value) = each (%$param_hash)){
3330: next if ($param =~ /^v\./); # Ignore versions...
3331: #
3332: # Just dump the symb=value pairs separated by &
3333: #
3334: $qresult.=$symb.':'.$param.'='.$value.'&';
3335: }
3336: }
3337: chop($qresult);
1.387 albertel 3338: &Reply($client , \$qresult, $userinput);
1.231 foxr 3339: } else {
3340: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3341: "while attempting currentdump\n", $userinput);
3342: }
3343: } else {
3344: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3345: "while attempting currentdump\n", $userinput);
3346: }
3347:
3348: return 1;
3349: }
3350: ®ister_handler("currentdump", \&dump_profile_database, 0, 1, 0);
3351:
3352: #
3353: # Dump a profile database with an optional regular expression
3354: # to match against the keys. In this dump, no effort is made
3355: # to separate symb from version information. Presumably the
3356: # databases that are dumped by this command are of a different
3357: # structure. Need to look at this and improve the documentation of
3358: # both this and the currentdump handler.
3359: # Parameters:
3360: # $cmd - The command keyword.
3361: # $tail - All of the characters after the $cmd:
3362: # These are expected to be a colon
3363: # separated list containing:
3364: # domain/user - identifying the user.
3365: # namespace - identifying the database.
3366: # regexp - optional regular expression
3367: # that is matched against
3368: # database keywords to do
3369: # selective dumps.
1.488 raeburn 3370: # range - optional range of entries
3371: # e.g., 10-20 would return the
3372: # 10th to 19th items, etc.
1.231 foxr 3373: # $client - Channel open on the client.
3374: # Returns:
3375: # 1 - Continue processing.
3376: # Side effects:
3377: # response is written to $client.
3378: #
3379: sub dump_with_regexp {
3380: my ($cmd, $tail, $client) = @_;
3381:
1.494 droeschl 3382: my $res = LONCAPA::Lond::dump_with_regexp($tail, $clientversion);
1.490 droeschl 3383:
3384: if ($res =~ /^error:/) {
3385: Failure($client, \$res, "$cmd:$tail");
3386: } else {
3387: Reply($client, \$res, "$cmd:$tail");
3388: }
1.231 foxr 3389:
3390: return 1;
3391: }
3392: ®ister_handler("dump", \&dump_with_regexp, 0, 1, 0);
3393:
3394: # Store a set of key=value pairs associated with a versioned name.
3395: #
3396: # Parameters:
3397: # $cmd - Request command keyword.
3398: # $tail - Tail of the request. This is a colon
3399: # separated list containing:
3400: # domain/user - User and authentication domain.
3401: # namespace - Name of the database being modified
3402: # rid - Resource keyword to modify.
3403: # what - new value associated with rid.
1.512 raeburn 3404: # laststore - (optional) version=timestamp
3405: # for most recent transaction for rid
3406: # in namespace, when cstore was called
1.231 foxr 3407: #
3408: # $client - Socket open on the client.
3409: #
3410: #
3411: # Returns:
3412: # 1 (keep on processing).
3413: # Side-Effects:
3414: # Writes to the client
1.512 raeburn 3415: # Successful storage will cause either 'ok', or, if $laststore was included
3416: # in the tail of the request, and the version number for the last transaction
3417: # is larger than the version in $laststore, delay:$numtrans , where $numtrans
3418: # is the number of store evevnts recorded for rid in namespace since
3419: # lonnet::store() was called by the client.
3420: #
1.231 foxr 3421: sub store_handler {
3422: my ($cmd, $tail, $client) = @_;
3423:
3424: my $userinput = "$cmd:$tail";
1.512 raeburn 3425: chomp($tail);
3426: my ($udom,$uname,$namespace,$rid,$what,$laststore) =split(/:/,$tail);
1.231 foxr 3427: if ($namespace ne 'roles') {
3428:
3429: my @pairs=split(/\&/,$what);
3430: my $hashref = &tie_user_hash($udom, $uname, $namespace,
1.268 albertel 3431: &GDBM_WRCREAT(), "S",
1.231 foxr 3432: "$rid:$what");
3433: if ($hashref) {
3434: my $now = time;
1.512 raeburn 3435: my $numtrans;
3436: if ($laststore) {
3437: my ($previousversion,$previoustime) = split(/\=/,$laststore);
3438: my ($lastversion,$lasttime) = (0,0);
3439: $lastversion = $hashref->{"version:$rid"};
3440: if ($lastversion) {
3441: $lasttime = $hashref->{"$lastversion:$rid:timestamp"};
3442: }
3443: if (($previousversion) && ($previousversion !~ /\D/)) {
3444: if (($lastversion > $previousversion) && ($lasttime >= $previoustime)) {
3445: $numtrans = $lastversion - $previousversion;
3446: }
3447: } elsif ($lastversion) {
3448: $numtrans = $lastversion;
3449: }
3450: if ($numtrans) {
3451: $numtrans =~ s/D//g;
3452: }
3453: }
1.231 foxr 3454: $hashref->{"version:$rid"}++;
3455: my $version=$hashref->{"version:$rid"};
3456: my $allkeys='';
3457: foreach my $pair (@pairs) {
3458: my ($key,$value)=split(/=/,$pair);
3459: $allkeys.=$key.':';
3460: $hashref->{"$version:$rid:$key"}=$value;
3461: }
3462: $hashref->{"$version:$rid:timestamp"}=$now;
3463: $allkeys.='timestamp';
3464: $hashref->{"$version:keys:$rid"}=$allkeys;
1.311 albertel 3465: if (&untie_user_hash($hashref)) {
1.512 raeburn 3466: my $msg = 'ok';
3467: if ($numtrans) {
3468: $msg = 'delay:'.$numtrans;
3469: }
3470: &Reply($client, "$msg\n", $userinput);
1.231 foxr 3471: } else {
3472: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3473: "while attempting store\n", $userinput);
3474: }
3475: } else {
3476: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3477: "while attempting store\n", $userinput);
3478: }
3479: } else {
3480: &Failure($client, "refused\n", $userinput);
3481: }
3482:
3483: return 1;
3484: }
3485: ®ister_handler("store", \&store_handler, 0, 1, 0);
1.263 albertel 3486:
1.323 albertel 3487: # Modify a set of key=value pairs associated with a versioned name.
3488: #
3489: # Parameters:
3490: # $cmd - Request command keyword.
3491: # $tail - Tail of the request. This is a colon
3492: # separated list containing:
3493: # domain/user - User and authentication domain.
3494: # namespace - Name of the database being modified
3495: # rid - Resource keyword to modify.
3496: # v - Version item to modify
3497: # what - new value associated with rid.
3498: #
3499: # $client - Socket open on the client.
3500: #
3501: #
3502: # Returns:
3503: # 1 (keep on processing).
3504: # Side-Effects:
3505: # Writes to the client
3506: sub putstore_handler {
3507: my ($cmd, $tail, $client) = @_;
3508:
3509: my $userinput = "$cmd:$tail";
3510:
3511: my ($udom,$uname,$namespace,$rid,$v,$what) =split(/:/,$tail);
3512: if ($namespace ne 'roles') {
3513:
3514: chomp($what);
3515: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3516: &GDBM_WRCREAT(), "M",
3517: "$rid:$v:$what");
3518: if ($hashref) {
3519: my $now = time;
3520: my %data = &hash_extract($what);
3521: my @allkeys;
3522: while (my($key,$value) = each(%data)) {
3523: push(@allkeys,$key);
3524: $hashref->{"$v:$rid:$key"} = $value;
3525: }
3526: my $allkeys = join(':',@allkeys);
3527: $hashref->{"$v:keys:$rid"}=$allkeys;
3528:
3529: if (&untie_user_hash($hashref)) {
3530: &Reply($client, "ok\n", $userinput);
3531: } else {
3532: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3533: "while attempting store\n", $userinput);
3534: }
3535: } else {
3536: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3537: "while attempting store\n", $userinput);
3538: }
3539: } else {
3540: &Failure($client, "refused\n", $userinput);
3541: }
3542:
3543: return 1;
3544: }
3545: ®ister_handler("putstore", \&putstore_handler, 0, 1, 0);
3546:
3547: sub hash_extract {
3548: my ($str)=@_;
3549: my %hash;
3550: foreach my $pair (split(/\&/,$str)) {
3551: my ($key,$value)=split(/=/,$pair);
3552: $hash{$key}=$value;
3553: }
3554: return (%hash);
3555: }
3556: sub hash_to_str {
3557: my ($hash_ref)=@_;
3558: my $str;
3559: foreach my $key (keys(%$hash_ref)) {
3560: $str.=$key.'='.$hash_ref->{$key}.'&';
3561: }
3562: $str=~s/\&$//;
3563: return $str;
3564: }
3565:
1.231 foxr 3566: #
3567: # Dump out all versions of a resource that has key=value pairs associated
3568: # with it for each version. These resources are built up via the store
3569: # command.
3570: #
3571: # Parameters:
3572: # $cmd - Command keyword.
3573: # $tail - Remainder of the request which consists of:
3574: # domain/user - User and auth. domain.
3575: # namespace - name of resource database.
3576: # rid - Resource id.
3577: # $client - socket open on the client.
3578: #
3579: # Returns:
3580: # 1 indicating the caller should not yet exit.
3581: # Side-effects:
3582: # Writes a reply to the client.
3583: # The reply is a string of the following shape:
3584: # version=current&version:keys=k1:k2...&1:k1=v1&1:k2=v2...
3585: # Where the 1 above represents version 1.
3586: # this continues for all pairs of keys in all versions.
3587: #
3588: #
3589: #
3590: #
3591: sub restore_handler {
3592: my ($cmd, $tail, $client) = @_;
3593:
3594: my $userinput = "$cmd:$tail"; # Only used for logging purposes.
1.351 banghart 3595: my ($udom,$uname,$namespace,$rid) = split(/:/,$tail);
1.352 albertel 3596: $namespace=~s/\//\_/g;
1.350 albertel 3597: $namespace = &LONCAPA::clean_username($namespace);
1.349 albertel 3598:
1.231 foxr 3599: chomp($rid);
3600: my $qresult='';
1.309 albertel 3601: my $hashref = &tie_user_hash($udom, $uname, $namespace, &GDBM_READER());
3602: if ($hashref) {
3603: my $version=$hashref->{"version:$rid"};
1.231 foxr 3604: $qresult.="version=$version&";
3605: my $scope;
3606: for ($scope=1;$scope<=$version;$scope++) {
1.309 albertel 3607: my $vkeys=$hashref->{"$scope:keys:$rid"};
1.231 foxr 3608: my @keys=split(/:/,$vkeys);
3609: my $key;
3610: $qresult.="$scope:keys=$vkeys&";
3611: foreach $key (@keys) {
1.309 albertel 3612: $qresult.="$scope:$key=".$hashref->{"$scope:$rid:$key"}."&";
1.231 foxr 3613: }
3614: }
1.311 albertel 3615: if (&untie_user_hash($hashref)) {
1.231 foxr 3616: $qresult=~s/\&$//;
1.387 albertel 3617: &Reply( $client, \$qresult, $userinput);
1.231 foxr 3618: } else {
3619: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3620: "while attempting restore\n", $userinput);
3621: }
3622: } else {
3623: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3624: "while attempting restore\n", $userinput);
3625: }
3626:
3627: return 1;
3628:
3629:
3630: }
3631: ®ister_handler("restore", \&restore_handler, 0,1,0);
1.234 foxr 3632:
3633: #
1.324 raeburn 3634: # Add a chat message to a synchronous discussion board.
1.234 foxr 3635: #
3636: # Parameters:
3637: # $cmd - Request keyword.
3638: # $tail - Tail of the command. A colon separated list
3639: # containing:
3640: # cdom - Domain on which the chat board lives
1.324 raeburn 3641: # cnum - Course containing the chat board.
3642: # newpost - Body of the posting.
3643: # group - Optional group, if chat board is only
3644: # accessible in a group within the course
1.234 foxr 3645: # $client - Socket open on the client.
3646: # Returns:
3647: # 1 - Indicating caller should keep on processing.
3648: #
3649: # Side-effects:
3650: # writes a reply to the client.
3651: #
3652: #
3653: sub send_chat_handler {
3654: my ($cmd, $tail, $client) = @_;
3655:
3656:
3657: my $userinput = "$cmd:$tail";
3658:
1.324 raeburn 3659: my ($cdom,$cnum,$newpost,$group)=split(/\:/,$tail);
3660: &chat_add($cdom,$cnum,$newpost,$group);
1.234 foxr 3661: &Reply($client, "ok\n", $userinput);
3662:
3663: return 1;
3664: }
3665: ®ister_handler("chatsend", \&send_chat_handler, 0, 1, 0);
1.263 albertel 3666:
1.234 foxr 3667: #
1.324 raeburn 3668: # Retrieve the set of chat messages from a discussion board.
1.234 foxr 3669: #
3670: # Parameters:
3671: # $cmd - Command keyword that initiated the request.
3672: # $tail - Remainder of the request after the command
3673: # keyword. In this case a colon separated list of
3674: # chat domain - Which discussion board.
3675: # chat id - Discussion thread(?)
3676: # domain/user - Authentication domain and username
3677: # of the requesting person.
1.324 raeburn 3678: # group - Optional course group containing
3679: # the board.
1.234 foxr 3680: # $client - Socket open on the client program.
3681: # Returns:
3682: # 1 - continue processing
3683: # Side effects:
3684: # Response is written to the client.
3685: #
3686: sub retrieve_chat_handler {
3687: my ($cmd, $tail, $client) = @_;
3688:
3689:
3690: my $userinput = "$cmd:$tail";
3691:
1.324 raeburn 3692: my ($cdom,$cnum,$udom,$uname,$group)=split(/\:/,$tail);
1.234 foxr 3693: my $reply='';
1.324 raeburn 3694: foreach (&get_chat($cdom,$cnum,$udom,$uname,$group)) {
1.234 foxr 3695: $reply.=&escape($_).':';
3696: }
3697: $reply=~s/\:$//;
1.387 albertel 3698: &Reply($client, \$reply, $userinput);
1.234 foxr 3699:
3700:
3701: return 1;
3702: }
3703: ®ister_handler("chatretr", \&retrieve_chat_handler, 0, 1, 0);
3704:
3705: #
3706: # Initiate a query of an sql database. SQL query repsonses get put in
3707: # a file for later retrieval. This prevents sql query results from
3708: # bottlenecking the system. Note that with loncnew, perhaps this is
3709: # less of an issue since multiple outstanding requests can be concurrently
3710: # serviced.
3711: #
3712: # Parameters:
3713: # $cmd - COmmand keyword that initiated the request.
3714: # $tail - Remainder of the command after the keyword.
3715: # For this function, this consists of a query and
3716: # 3 arguments that are self-documentingly labelled
3717: # in the original arg1, arg2, arg3.
3718: # $client - Socket open on the client.
3719: # Return:
3720: # 1 - Indicating processing should continue.
3721: # Side-effects:
3722: # a reply is written to $client.
3723: #
3724: sub send_query_handler {
3725: my ($cmd, $tail, $client) = @_;
3726:
3727:
3728: my $userinput = "$cmd:$tail";
3729:
3730: my ($query,$arg1,$arg2,$arg3)=split(/\:/,$tail);
3731: $query=~s/\n*$//g;
3732: &Reply($client, "". &sql_reply("$clientname\&$query".
3733: "\&$arg1"."\&$arg2"."\&$arg3")."\n",
3734: $userinput);
3735:
3736: return 1;
3737: }
3738: ®ister_handler("querysend", \&send_query_handler, 0, 1, 0);
3739:
3740: #
3741: # Add a reply to an sql query. SQL queries are done asyncrhonously.
3742: # The query is submitted via a "querysend" transaction.
3743: # There it is passed on to the lonsql daemon, queued and issued to
3744: # mysql.
3745: # This transaction is invoked when the sql transaction is complete
3746: # it stores the query results in flie and indicates query completion.
3747: # presumably local software then fetches this response... I'm guessing
3748: # the sequence is: lonc does a querysend, we ask lonsql to do it.
3749: # lonsql on completion of the query interacts with the lond of our
3750: # client to do a query reply storing two files:
3751: # - id - The results of the query.
3752: # - id.end - Indicating the transaction completed.
3753: # NOTE: id is a unique id assigned to the query and querysend time.
3754: # Parameters:
3755: # $cmd - Command keyword that initiated this request.
3756: # $tail - Remainder of the tail. In this case that's a colon
3757: # separated list containing the query Id and the
3758: # results of the query.
3759: # $client - Socket open on the client.
3760: # Return:
3761: # 1 - Indicating that we should continue processing.
3762: # Side effects:
3763: # ok written to the client.
3764: #
3765: sub reply_query_handler {
3766: my ($cmd, $tail, $client) = @_;
3767:
3768:
3769: my $userinput = "$cmd:$tail";
3770:
1.339 albertel 3771: my ($id,$reply)=split(/:/,$tail);
1.234 foxr 3772: my $store;
3773: my $execdir=$perlvar{'lonDaemons'};
3774: if ($store=IO::File->new(">$execdir/tmp/$id")) {
3775: $reply=~s/\&/\n/g;
3776: print $store $reply;
3777: close $store;
3778: my $store2=IO::File->new(">$execdir/tmp/$id.end");
3779: print $store2 "done\n";
3780: close $store2;
3781: &Reply($client, "ok\n", $userinput);
3782: } else {
3783: &Failure($client, "error: ".($!+0)
3784: ." IO::File->new Failed ".
3785: "while attempting queryreply\n", $userinput);
3786: }
3787:
3788:
3789: return 1;
3790: }
3791: ®ister_handler("queryreply", \&reply_query_handler, 0, 1, 0);
3792:
3793: #
3794: # Process the courseidput request. Not quite sure what this means
3795: # at the system level sense. It appears a gdbm file in the
3796: # /home/httpd/lonUsers/$domain/nohist_courseids is tied and
3797: # a set of entries made in that database.
3798: #
3799: # Parameters:
3800: # $cmd - The command keyword that initiated this request.
3801: # $tail - Tail of the command. In this case consists of a colon
3802: # separated list contaning the domain to apply this to and
3803: # an ampersand separated list of keyword=value pairs.
1.272 raeburn 3804: # Each value is a colon separated list that includes:
3805: # description, institutional code and course owner.
3806: # For backward compatibility with versions included
3807: # in LON-CAPA 1.1.X (and earlier) and 1.2.X, institutional
3808: # code and/or course owner are preserved from the existing
3809: # record when writing a new record in response to 1.1 or
3810: # 1.2 implementations of lonnet::flushcourselogs().
3811: #
1.234 foxr 3812: # $client - Socket open on the client.
3813: # Returns:
3814: # 1 - indicating that processing should continue
3815: #
3816: # Side effects:
3817: # reply is written to the client.
3818: #
3819: sub put_course_id_handler {
3820: my ($cmd, $tail, $client) = @_;
3821:
3822:
3823: my $userinput = "$cmd:$tail";
3824:
1.266 raeburn 3825: my ($udom, $what) = split(/:/, $tail,2);
1.234 foxr 3826: chomp($what);
3827: my $now=time;
3828: my @pairs=split(/\&/,$what);
3829:
3830: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
3831: if ($hashref) {
3832: foreach my $pair (@pairs) {
1.271 raeburn 3833: my ($key,$courseinfo) = split(/=/,$pair,2);
3834: $courseinfo =~ s/=/:/g;
1.384 raeburn 3835: if (defined($hashref->{$key})) {
3836: my $value = &Apache::lonnet::thaw_unescape($hashref->{$key});
3837: if (ref($value) eq 'HASH') {
3838: my @items = ('description','inst_code','owner','type');
3839: my @new_items = split(/:/,$courseinfo,-1);
3840: my %storehash;
3841: for (my $i=0; $i<@new_items; $i++) {
1.391 raeburn 3842: $storehash{$items[$i]} = &unescape($new_items[$i]);
1.384 raeburn 3843: }
3844: $hashref->{$key} =
3845: &Apache::lonnet::freeze_escape(\%storehash);
3846: my $unesc_key = &unescape($key);
3847: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
3848: next;
1.383 raeburn 3849: }
1.384 raeburn 3850: }
3851: my @current_items = split(/:/,$hashref->{$key},-1);
3852: shift(@current_items); # remove description
3853: pop(@current_items); # remove last access
3854: my $numcurrent = scalar(@current_items);
3855: if ($numcurrent > 3) {
3856: $numcurrent = 3;
3857: }
3858: my @new_items = split(/:/,$courseinfo,-1);
3859: my $numnew = scalar(@new_items);
3860: if ($numcurrent > 0) {
3861: if ($numnew <= $numcurrent) { # flushcourselogs() from pre 2.2
3862: for (my $j=$numcurrent-$numnew; $j>=0; $j--) {
3863: $courseinfo .= ':'.$current_items[$numcurrent-$j-1];
1.333 raeburn 3864: }
1.272 raeburn 3865: }
3866: }
1.384 raeburn 3867: $hashref->{$key}=$courseinfo.':'.$now;
1.234 foxr 3868: }
1.311 albertel 3869: if (&untie_domain_hash($hashref)) {
1.253 foxr 3870: &Reply( $client, "ok\n", $userinput);
1.234 foxr 3871: } else {
1.253 foxr 3872: &Failure($client, "error: ".($!+0)
1.234 foxr 3873: ." untie(GDBM) Failed ".
3874: "while attempting courseidput\n", $userinput);
3875: }
3876: } else {
1.253 foxr 3877: &Failure($client, "error: ".($!+0)
1.234 foxr 3878: ." tie(GDBM) Failed ".
3879: "while attempting courseidput\n", $userinput);
3880: }
3881:
3882: return 1;
3883: }
3884: ®ister_handler("courseidput", \&put_course_id_handler, 0, 1, 0);
3885:
1.383 raeburn 3886: sub put_course_id_hash_handler {
3887: my ($cmd, $tail, $client) = @_;
3888: my $userinput = "$cmd:$tail";
1.384 raeburn 3889: my ($udom,$mode,$what) = split(/:/, $tail,3);
1.383 raeburn 3890: chomp($what);
3891: my $now=time;
3892: my @pairs=split(/\&/,$what);
1.384 raeburn 3893: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
1.383 raeburn 3894: if ($hashref) {
3895: foreach my $pair (@pairs) {
3896: my ($key,$value)=split(/=/,$pair);
1.384 raeburn 3897: my $unesc_key = &unescape($key);
3898: if ($mode ne 'timeonly') {
3899: if (!defined($hashref->{&escape('lasttime:'.$unesc_key)})) {
3900: my $curritems = &Apache::lonnet::thaw_unescape($key);
3901: if (ref($curritems) ne 'HASH') {
3902: my @current_items = split(/:/,$hashref->{$key},-1);
3903: my $lasttime = pop(@current_items);
3904: $hashref->{&escape('lasttime:'.$unesc_key)} = $lasttime;
3905: } else {
3906: $hashref->{&escape('lasttime:'.$unesc_key)} = '';
3907: }
3908: }
3909: $hashref->{$key} = $value;
3910: }
3911: if ($mode ne 'notime') {
3912: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
3913: }
1.383 raeburn 3914: }
3915: if (&untie_domain_hash($hashref)) {
3916: &Reply($client, "ok\n", $userinput);
3917: } else {
3918: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3919: "while attempting courseidputhash\n", $userinput);
3920: }
3921: } else {
3922: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3923: "while attempting courseidputhash\n", $userinput);
3924: }
3925: return 1;
3926: }
3927: ®ister_handler("courseidputhash", \&put_course_id_hash_handler, 0, 1, 0);
3928:
1.234 foxr 3929: # Retrieves the value of a course id resource keyword pattern
3930: # defined since a starting date. Both the starting date and the
3931: # keyword pattern are optional. If the starting date is not supplied it
3932: # is treated as the beginning of time. If the pattern is not found,
3933: # it is treatred as "." matching everything.
3934: #
3935: # Parameters:
3936: # $cmd - Command keyword that resulted in us being dispatched.
3937: # $tail - The remainder of the command that, in this case, consists
3938: # of a colon separated list of:
3939: # domain - The domain in which the course database is
3940: # defined.
3941: # since - Optional parameter describing the minimum
3942: # time of definition(?) of the resources that
3943: # will match the dump.
3944: # description - regular expression that is used to filter
3945: # the dump. Only keywords matching this regexp
3946: # will be used.
1.272 raeburn 3947: # institutional code - optional supplied code to filter
3948: # the dump. Only courses with an institutional code
3949: # that match the supplied code will be returned.
1.336 raeburn 3950: # owner - optional supplied username and domain of owner to
3951: # filter the dump. Only courses for which the course
3952: # owner matches the supplied username and/or domain
3953: # will be returned. Pre-2.2.0 legacy entries from
3954: # nohist_courseiddump will only contain usernames.
1.384 raeburn 3955: # type - optional parameter for selection
1.418 raeburn 3956: # regexp_ok - if 1 or -1 allow the supplied institutional code
3957: # filter to behave as a regular expression:
3958: # 1 will not exclude the course if the instcode matches the RE
3959: # -1 will exclude the course if the instcode matches the RE
1.384 raeburn 3960: # rtn_as_hash - whether to return the information available for
3961: # each matched item as a frozen hash of all
3962: # key, value pairs in the item's hash, or as a
3963: # colon-separated list of (in order) description,
3964: # institutional code, and course owner.
1.404 raeburn 3965: # selfenrollonly - filter by courses allowing self-enrollment
3966: # now or in the future (selfenrollonly = 1).
3967: # catfilter - filter by course category, assigned to a course
3968: # using manually defined categories (i.e., not
1.407 raeburn 3969: # self-cataloging based on on institutional code).
1.404 raeburn 3970: # showhidden - include course in results even if course
1.407 raeburn 3971: # was set to be excluded from course catalog (DC only).
1.404 raeburn 3972: # caller - if set to 'coursecatalog', courses set to be hidden
3973: # from course catalog will be excluded from results (unless
3974: # overridden by "showhidden".
1.427 raeburn 3975: # cloner - escaped username:domain of course cloner (if picking course to
1.419 raeburn 3976: # clone).
3977: # cc_clone_list - escaped comma separated list of courses for which
3978: # course cloner has active CC role (and so can clone
3979: # automatically).
1.427 raeburn 3980: # cloneonly - filter by courses for which cloner has rights to clone.
3981: # createdbefore - include courses for which creation date preceeded this date.
3982: # createdafter - include courses for which creation date followed this date.
3983: # creationcontext - include courses created in specified context
1.404 raeburn 3984: #
1.445 raeburn 3985: # domcloner - flag to indicate if user can create CCs in course's domain.
1.505 raeburn 3986: # If so, ability to clone course is automatic.
3987: # hasuniquecode - filter by courses for which a six character unique code has
3988: # been set.
1.445 raeburn 3989: #
1.234 foxr 3990: # $client - The socket open on the client.
3991: # Returns:
3992: # 1 - Continue processing.
3993: # Side Effects:
3994: # a reply is written to $client.
3995: sub dump_course_id_handler {
3996: my ($cmd, $tail, $client) = @_;
1.494 droeschl 3997:
3998: my $res = LONCAPA::Lond::dump_course_id_handler($tail);
3999: if ($res =~ /^error:/) {
4000: Failure($client, \$res, "$cmd:$tail");
4001: } else {
4002: Reply($client, \$res, "$cmd:$tail");
4003: }
4004:
4005: return 1;
4006:
4007: #TODO remove
1.234 foxr 4008: my $userinput = "$cmd:$tail";
4009:
1.333 raeburn 4010: my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter,
1.404 raeburn 4011: $typefilter,$regexp_ok,$rtn_as_hash,$selfenrollonly,$catfilter,$showhidden,
1.427 raeburn 4012: $caller,$cloner,$cc_clone_list,$cloneonly,$createdbefore,$createdafter,
1.505 raeburn 4013: $creationcontext,$domcloner,$hasuniquecode) =split(/:/,$tail);
1.397 raeburn 4014: my $now = time;
1.419 raeburn 4015: my ($cloneruname,$clonerudom,%cc_clone);
1.234 foxr 4016: if (defined($description)) {
4017: $description=&unescape($description);
4018: } else {
4019: $description='.';
4020: }
1.266 raeburn 4021: if (defined($instcodefilter)) {
4022: $instcodefilter=&unescape($instcodefilter);
4023: } else {
4024: $instcodefilter='.';
4025: }
1.336 raeburn 4026: my ($ownerunamefilter,$ownerdomfilter);
1.266 raeburn 4027: if (defined($ownerfilter)) {
4028: $ownerfilter=&unescape($ownerfilter);
1.336 raeburn 4029: if ($ownerfilter ne '.' && defined($ownerfilter)) {
4030: if ($ownerfilter =~ /^([^:]*):([^:]*)$/) {
4031: $ownerunamefilter = $1;
4032: $ownerdomfilter = $2;
4033: } else {
4034: $ownerunamefilter = $ownerfilter;
4035: $ownerdomfilter = '';
4036: }
4037: }
1.266 raeburn 4038: } else {
4039: $ownerfilter='.';
4040: }
1.336 raeburn 4041:
1.282 raeburn 4042: if (defined($coursefilter)) {
4043: $coursefilter=&unescape($coursefilter);
4044: } else {
4045: $coursefilter='.';
4046: }
1.333 raeburn 4047: if (defined($typefilter)) {
4048: $typefilter=&unescape($typefilter);
4049: } else {
4050: $typefilter='.';
4051: }
1.344 raeburn 4052: if (defined($regexp_ok)) {
4053: $regexp_ok=&unescape($regexp_ok);
4054: }
1.401 raeburn 4055: if (defined($catfilter)) {
4056: $catfilter=&unescape($catfilter);
4057: }
1.419 raeburn 4058: if (defined($cloner)) {
4059: $cloner = &unescape($cloner);
4060: ($cloneruname,$clonerudom) = ($cloner =~ /^($LONCAPA::match_username):($LONCAPA::match_domain)$/);
4061: }
4062: if (defined($cc_clone_list)) {
4063: $cc_clone_list = &unescape($cc_clone_list);
4064: my @cc_cloners = split('&',$cc_clone_list);
4065: foreach my $cid (@cc_cloners) {
4066: my ($clonedom,$clonenum) = split(':',$cid);
4067: next if ($clonedom ne $udom);
4068: $cc_clone{$clonedom.'_'.$clonenum} = 1;
4069: }
4070: }
1.431 raeburn 4071: if ($createdbefore ne '') {
1.427 raeburn 4072: $createdbefore = &unescape($createdbefore);
4073: } else {
4074: $createdbefore = 0;
4075: }
1.431 raeburn 4076: if ($createdafter ne '') {
1.427 raeburn 4077: $createdafter = &unescape($createdafter);
4078: } else {
4079: $createdafter = 0;
4080: }
1.431 raeburn 4081: if ($creationcontext ne '') {
1.427 raeburn 4082: $creationcontext = &unescape($creationcontext);
4083: } else {
4084: $creationcontext = '.';
4085: }
1.505 raeburn 4086: unless ($hasuniquecode) {
4087: $hasuniquecode = '.';
4088: }
1.384 raeburn 4089: my $unpack = 1;
1.485 raeburn 4090: if ($description eq '.' && $instcodefilter eq '.' && $ownerfilter eq '.' &&
1.384 raeburn 4091: $typefilter eq '.') {
4092: $unpack = 0;
4093: }
4094: if (!defined($since)) { $since=0; }
1.234 foxr 4095: my $qresult='';
4096: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
4097: if ($hashref) {
1.384 raeburn 4098: while (my ($key,$value) = each(%$hashref)) {
1.397 raeburn 4099: my ($unesc_key,$lasttime_key,$lasttime,$is_hash,%val,
1.427 raeburn 4100: %unesc_val,$selfenroll_end,$selfenroll_types,$created,
4101: $context);
1.384 raeburn 4102: $unesc_key = &unescape($key);
4103: if ($unesc_key =~ /^lasttime:/) {
4104: next;
4105: } else {
4106: $lasttime_key = &escape('lasttime:'.$unesc_key);
4107: }
4108: if ($hashref->{$lasttime_key} ne '') {
4109: $lasttime = $hashref->{$lasttime_key};
4110: next if ($lasttime<$since);
4111: }
1.419 raeburn 4112: my ($canclone,$valchange);
1.384 raeburn 4113: my $items = &Apache::lonnet::thaw_unescape($value);
4114: if (ref($items) eq 'HASH') {
1.429 raeburn 4115: if ($hashref->{$lasttime_key} eq '') {
1.430 raeburn 4116: next if ($since > 1);
1.429 raeburn 4117: }
1.384 raeburn 4118: $is_hash = 1;
1.445 raeburn 4119: if ($domcloner) {
4120: $canclone = 1;
4121: } elsif (defined($clonerudom)) {
1.419 raeburn 4122: if ($items->{'cloners'}) {
4123: my @cloneable = split(',',$items->{'cloners'});
4124: if (@cloneable) {
4125: if (grep(/^\*$/,@cloneable)) {
4126: $canclone = 1;
4127: } elsif (grep(/^\*:\Q$clonerudom\E$/,@cloneable)) {
4128: $canclone = 1;
4129: } elsif (grep(/^\Q$cloneruname\E:\Q$clonerudom\E$/,@cloneable)) {
4130: $canclone = 1;
4131: }
4132: }
4133: unless ($canclone) {
4134: if ($cloneruname ne '' && $clonerudom ne '') {
4135: if ($cc_clone{$unesc_key}) {
4136: $canclone = 1;
4137: $items->{'cloners'} .= ','.$cloneruname.':'.
4138: $clonerudom;
4139: $valchange = 1;
4140: }
4141: }
4142: }
4143: } elsif (defined($cloneruname)) {
4144: if ($cc_clone{$unesc_key}) {
4145: $canclone = 1;
4146: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
4147: $valchange = 1;
4148: }
1.437 raeburn 4149: unless ($canclone) {
4150: if ($items->{'owner'} =~ /:/) {
4151: if ($items->{'owner'} eq $cloner) {
4152: $canclone = 1;
4153: }
1.444 raeburn 4154: } elsif ($cloner eq $items->{'owner'}.':'.$udom) {
1.437 raeburn 4155: $canclone = 1;
4156: }
4157: if ($canclone) {
4158: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
4159: $valchange = 1;
4160: }
4161: }
1.419 raeburn 4162: }
4163: }
1.384 raeburn 4164: if ($unpack || !$rtn_as_hash) {
4165: $unesc_val{'descr'} = $items->{'description'};
4166: $unesc_val{'inst_code'} = $items->{'inst_code'};
4167: $unesc_val{'owner'} = $items->{'owner'};
4168: $unesc_val{'type'} = $items->{'type'};
1.419 raeburn 4169: $unesc_val{'cloners'} = $items->{'cloners'};
1.427 raeburn 4170: $unesc_val{'created'} = $items->{'created'};
4171: $unesc_val{'context'} = $items->{'context'};
1.404 raeburn 4172: }
4173: $selfenroll_types = $items->{'selfenroll_types'};
4174: $selfenroll_end = $items->{'selfenroll_end_date'};
1.427 raeburn 4175: $created = $items->{'created'};
4176: $context = $items->{'context'};
1.505 raeburn 4177: if ($hasuniquecode ne '.') {
4178: next unless ($items->{'uniquecode'});
4179: }
1.404 raeburn 4180: if ($selfenrollonly) {
4181: next if (!$selfenroll_types);
4182: if (($selfenroll_end > 0) && ($selfenroll_end <= $now)) {
4183: next;
1.397 raeburn 4184: }
1.404 raeburn 4185: }
1.427 raeburn 4186: if ($creationcontext ne '.') {
4187: next if (($context ne '') && ($context ne $creationcontext));
4188: }
4189: if ($createdbefore > 0) {
4190: next if (($created eq '') || ($created > $createdbefore));
4191: }
4192: if ($createdafter > 0) {
4193: next if (($created eq '') || ($created <= $createdafter));
4194: }
1.404 raeburn 4195: if ($catfilter ne '') {
1.406 raeburn 4196: next if ($items->{'categories'} eq '');
4197: my @categories = split('&',$items->{'categories'});
1.407 raeburn 4198: next if (@categories == 0);
4199: my @subcats = split('&',$catfilter);
4200: my $matchcat = 0;
4201: foreach my $cat (@categories) {
4202: if (grep(/^\Q$cat\E$/,@subcats)) {
4203: $matchcat = 1;
4204: last;
4205: }
4206: }
4207: next if (!$matchcat);
1.404 raeburn 4208: }
4209: if ($caller eq 'coursecatalog') {
1.405 raeburn 4210: if ($items->{'hidefromcat'} eq 'yes') {
4211: next if !$showhidden;
1.401 raeburn 4212: }
1.384 raeburn 4213: }
1.383 raeburn 4214: } else {
1.401 raeburn 4215: next if ($catfilter ne '');
1.419 raeburn 4216: next if ($selfenrollonly);
1.427 raeburn 4217: next if ($createdbefore || $createdafter);
4218: next if ($creationcontext ne '.');
1.419 raeburn 4219: if ((defined($clonerudom)) && (defined($cloneruname))) {
4220: if ($cc_clone{$unesc_key}) {
4221: $canclone = 1;
4222: $val{'cloners'} = &escape($cloneruname.':'.$clonerudom);
4223: }
4224: }
1.384 raeburn 4225: $is_hash = 0;
1.388 raeburn 4226: my @courseitems = split(/:/,$value);
1.403 raeburn 4227: $lasttime = pop(@courseitems);
1.402 raeburn 4228: if ($hashref->{$lasttime_key} eq '') {
4229: next if ($lasttime<$since);
4230: }
1.384 raeburn 4231: ($val{'descr'},$val{'inst_code'},$val{'owner'},$val{'type'}) = @courseitems;
1.383 raeburn 4232: }
1.419 raeburn 4233: if ($cloneonly) {
4234: next unless ($canclone);
4235: }
1.266 raeburn 4236: my $match = 1;
1.384 raeburn 4237: if ($description ne '.') {
4238: if (!$is_hash) {
4239: $unesc_val{'descr'} = &unescape($val{'descr'});
4240: }
4241: if (eval{$unesc_val{'descr'} !~ /\Q$description\E/i}) {
1.266 raeburn 4242: $match = 0;
1.384 raeburn 4243: }
1.266 raeburn 4244: }
1.384 raeburn 4245: if ($instcodefilter ne '.') {
4246: if (!$is_hash) {
4247: $unesc_val{'inst_code'} = &unescape($val{'inst_code'});
4248: }
1.418 raeburn 4249: if ($regexp_ok == 1) {
1.384 raeburn 4250: if (eval{$unesc_val{'inst_code'} !~ /$instcodefilter/}) {
1.344 raeburn 4251: $match = 0;
4252: }
1.418 raeburn 4253: } elsif ($regexp_ok == -1) {
4254: if (eval{$unesc_val{'inst_code'} =~ /$instcodefilter/}) {
4255: $match = 0;
4256: }
1.344 raeburn 4257: } else {
1.384 raeburn 4258: if (eval{$unesc_val{'inst_code'} !~ /\Q$instcodefilter\E/i}) {
1.344 raeburn 4259: $match = 0;
4260: }
1.266 raeburn 4261: }
1.234 foxr 4262: }
1.384 raeburn 4263: if ($ownerfilter ne '.') {
4264: if (!$is_hash) {
4265: $unesc_val{'owner'} = &unescape($val{'owner'});
4266: }
1.336 raeburn 4267: if (($ownerunamefilter ne '') && ($ownerdomfilter ne '')) {
1.384 raeburn 4268: if ($unesc_val{'owner'} =~ /:/) {
4269: if (eval{$unesc_val{'owner'} !~
4270: /\Q$ownerunamefilter\E:\Q$ownerdomfilter\E$/i}) {
1.336 raeburn 4271: $match = 0;
4272: }
4273: } else {
1.384 raeburn 4274: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4275: $match = 0;
4276: }
4277: }
4278: } elsif ($ownerunamefilter ne '') {
1.384 raeburn 4279: if ($unesc_val{'owner'} =~ /:/) {
4280: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E:[^:]+$/i}) {
1.336 raeburn 4281: $match = 0;
4282: }
4283: } else {
1.384 raeburn 4284: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4285: $match = 0;
4286: }
4287: }
4288: } elsif ($ownerdomfilter ne '') {
1.384 raeburn 4289: if ($unesc_val{'owner'} =~ /:/) {
4290: if (eval{$unesc_val{'owner'} !~ /^[^:]+:\Q$ownerdomfilter\E/}) {
1.336 raeburn 4291: $match = 0;
4292: }
4293: } else {
4294: if ($ownerdomfilter ne $udom) {
4295: $match = 0;
4296: }
4297: }
1.266 raeburn 4298: }
4299: }
1.384 raeburn 4300: if ($coursefilter ne '.') {
4301: if (eval{$unesc_key !~ /^$udom(_)\Q$coursefilter\E$/}) {
1.282 raeburn 4302: $match = 0;
4303: }
4304: }
1.384 raeburn 4305: if ($typefilter ne '.') {
4306: if (!$is_hash) {
4307: $unesc_val{'type'} = &unescape($val{'type'});
4308: }
4309: if ($unesc_val{'type'} eq '') {
1.333 raeburn 4310: if ($typefilter ne 'Course') {
4311: $match = 0;
4312: }
1.383 raeburn 4313: } else {
1.384 raeburn 4314: if (eval{$unesc_val{'type'} !~ /^\Q$typefilter\E$/}) {
1.333 raeburn 4315: $match = 0;
4316: }
4317: }
4318: }
1.266 raeburn 4319: if ($match == 1) {
1.384 raeburn 4320: if ($rtn_as_hash) {
4321: if ($is_hash) {
1.419 raeburn 4322: if ($valchange) {
4323: my $newvalue = &Apache::lonnet::freeze_escape($items);
4324: $qresult.=$key.'='.$newvalue.'&';
4325: } else {
4326: $qresult.=$key.'='.$value.'&';
4327: }
1.384 raeburn 4328: } else {
1.388 raeburn 4329: my %rtnhash = ( 'description' => &unescape($val{'descr'}),
4330: 'inst_code' => &unescape($val{'inst_code'}),
4331: 'owner' => &unescape($val{'owner'}),
4332: 'type' => &unescape($val{'type'}),
1.419 raeburn 4333: 'cloners' => &unescape($val{'cloners'}),
1.384 raeburn 4334: );
4335: my $items = &Apache::lonnet::freeze_escape(\%rtnhash);
4336: $qresult.=$key.'='.$items.'&';
4337: }
1.383 raeburn 4338: } else {
1.384 raeburn 4339: if ($is_hash) {
4340: $qresult .= $key.'='.&escape($unesc_val{'descr'}).':'.
4341: &escape($unesc_val{'inst_code'}).':'.
4342: &escape($unesc_val{'owner'}).'&';
4343: } else {
4344: $qresult .= $key.'='.$val{'descr'}.':'.$val{'inst_code'}.
4345: ':'.$val{'owner'}.'&';
4346: }
1.383 raeburn 4347: }
1.266 raeburn 4348: }
1.234 foxr 4349: }
1.311 albertel 4350: if (&untie_domain_hash($hashref)) {
1.234 foxr 4351: chop($qresult);
1.387 albertel 4352: &Reply($client, \$qresult, $userinput);
1.234 foxr 4353: } else {
4354: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4355: "while attempting courseiddump\n", $userinput);
4356: }
4357: } else {
4358: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4359: "while attempting courseiddump\n", $userinput);
4360: }
4361: return 1;
4362: }
4363: ®ister_handler("courseiddump", \&dump_course_id_handler, 0, 1, 0);
1.238 foxr 4364:
1.438 raeburn 4365: sub course_lastaccess_handler {
4366: my ($cmd, $tail, $client) = @_;
4367: my $userinput = "$cmd:$tail";
4368: my ($cdom,$cnum) = split(':',$tail);
4369: my (%lastaccess,$qresult);
4370: my $hashref = &tie_domain_hash($cdom, "nohist_courseids", &GDBM_WRCREAT());
4371: if ($hashref) {
4372: while (my ($key,$value) = each(%$hashref)) {
4373: my ($unesc_key,$lasttime);
4374: $unesc_key = &unescape($key);
4375: if ($cnum) {
4376: next unless ($unesc_key =~ /\Q$cdom\E_\Q$cnum\E$/);
4377: }
4378: if ($unesc_key =~ /^lasttime:($LONCAPA::match_domain\_$LONCAPA::match_courseid)/) {
4379: $lastaccess{$1} = $value;
4380: } else {
4381: my $items = &Apache::lonnet::thaw_unescape($value);
4382: if (ref($items) eq 'HASH') {
4383: unless ($lastaccess{$unesc_key}) {
4384: $lastaccess{$unesc_key} = '';
4385: }
4386: } else {
4387: my @courseitems = split(':',$value);
4388: $lastaccess{$unesc_key} = pop(@courseitems);
4389: }
4390: }
4391: }
4392: foreach my $cid (sort(keys(%lastaccess))) {
4393: $qresult.=&escape($cid).'='.$lastaccess{$cid}.'&';
4394: }
4395: if (&untie_domain_hash($hashref)) {
4396: if ($qresult) {
4397: chop($qresult);
4398: }
4399: &Reply($client, \$qresult, $userinput);
4400: } else {
4401: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4402: "while attempting lastacourseaccess\n", $userinput);
4403: }
4404: } else {
4405: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4406: "while attempting lastcourseaccess\n", $userinput);
4407: }
4408: return 1;
4409: }
4410: ®ister_handler("courselastaccess",\&course_lastaccess_handler, 0, 1, 0);
4411:
1.238 foxr 4412: #
1.348 raeburn 4413: # Puts an unencrypted entry in a namespace db file at the domain level
4414: #
4415: # Parameters:
4416: # $cmd - The command that got us here.
4417: # $tail - Tail of the command (remaining parameters).
4418: # $client - File descriptor connected to client.
4419: # Returns
4420: # 0 - Requested to exit, caller should shut down.
4421: # 1 - Continue processing.
4422: # Side effects:
4423: # reply is written to $client.
4424: #
4425: sub put_domain_handler {
4426: my ($cmd,$tail,$client) = @_;
4427:
4428: my $userinput = "$cmd:$tail";
4429:
4430: my ($udom,$namespace,$what) =split(/:/,$tail,3);
4431: chomp($what);
4432: my @pairs=split(/\&/,$what);
4433: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_WRCREAT(),
4434: "P", $what);
4435: if ($hashref) {
4436: foreach my $pair (@pairs) {
4437: my ($key,$value)=split(/=/,$pair);
4438: $hashref->{$key}=$value;
4439: }
4440: if (&untie_domain_hash($hashref)) {
4441: &Reply($client, "ok\n", $userinput);
4442: } else {
4443: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4444: "while attempting putdom\n", $userinput);
4445: }
4446: } else {
4447: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4448: "while attempting putdom\n", $userinput);
4449: }
4450:
4451: return 1;
4452: }
4453: ®ister_handler("putdom", \&put_domain_handler, 0, 1, 0);
4454:
1.517 raeburn 4455: # Updates one or more entries in clickers.db file at the domain level
4456: #
4457: # Parameters:
4458: # $cmd - The command that got us here.
4459: # $tail - Tail of the command (remaining parameters).
4460: # In this case a colon separated list containing:
4461: # (a) the domain for which we are updating the entries,
4462: # (b) the action required -- add or del -- and
4463: # (c) a &-separated list of entries to add or delete.
4464: # $client - File descriptor connected to client.
4465: # Returns
4466: # 1 - Continue processing.
4467: # 0 - Requested to exit, caller should shut down.
4468: # Side effects:
4469: # reply is written to $client.
4470: #
4471:
4472:
4473: sub update_clickers {
4474: my ($cmd, $tail, $client) = @_;
4475:
4476: my $userinput = "$cmd:$tail";
4477: my ($udom,$action,$what) =split(/:/,$tail,3);
4478: chomp($what);
4479:
4480: my $hashref = &tie_domain_hash($udom, "clickers", &GDBM_WRCREAT(),
4481: "U","$action:$what");
4482:
4483: if (!$hashref) {
4484: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4485: "while attempting updateclickers\n", $userinput);
4486: return 1;
4487: }
4488:
4489: my @pairs=split(/\&/,$what);
4490: foreach my $pair (@pairs) {
4491: my ($key,$value)=split(/=/,$pair);
4492: if ($action eq 'add') {
4493: if (exists($hashref->{$key})) {
4494: my @newvals = split(/,/,&unescape($value));
4495: my @currvals = split(/,/,&unescape($hashref->{$key}));
4496: my @merged = sort(keys(%{{map { $_ => 1 } (@newvals,@currvals)}}));
4497: $hashref->{$key}=&escape(join(',',@merged));
4498: } else {
4499: $hashref->{$key}=$value;
4500: }
4501: } elsif ($action eq 'del') {
4502: if (exists($hashref->{$key})) {
4503: my %current;
4504: map { $current{$_} = 1; } split(/,/,&unescape($hashref->{$key}));
4505: map { delete($current{$_}); } split(/,/,&unescape($value));
4506: if (keys(%current)) {
4507: $hashref->{$key}=&escape(join(',',sort(keys(%current))));
4508: } else {
4509: delete($hashref->{$key});
4510: }
4511: }
4512: }
4513: }
4514: if (&untie_user_hash($hashref)) {
4515: &Reply( $client, "ok\n", $userinput);
4516: } else {
4517: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
4518: "while attempting put\n",
4519: $userinput);
4520: }
4521: return 1;
4522: }
4523: ®ister_handler("updateclickers", \&update_clickers, 0, 1, 0);
4524:
4525:
4526: # Deletes one or more entries in a namespace db file at the domain level
4527: #
4528: # Parameters:
4529: # $cmd - The command that got us here.
4530: # $tail - Tail of the command (remaining parameters).
4531: # In this case a colon separated list containing:
4532: # (a) the domain for which we are deleting the entries,
4533: # (b) &-separated list of keys to delete.
4534: # $client - File descriptor connected to client.
4535: # Returns
4536: # 1 - Continue processing.
4537: # 0 - Requested to exit, caller should shut down.
4538: # Side effects:
4539: # reply is written to $client.
4540: #
4541:
4542: sub del_domain_handler {
4543: my ($cmd,$tail,$client) = @_;
4544:
4545: my $userinput = "$cmd:$tail";
4546:
4547: my ($udom,$namespace,$what)=split(/:/,$tail,3);
4548: chomp($what);
4549: my $hashref = &tie_domain_hash($udom,$namespace,&GDBM_WRCREAT(),
4550: "D", $what);
4551: if ($hashref) {
4552: my @keys=split(/\&/,$what);
4553: foreach my $key (@keys) {
4554: delete($hashref->{$key});
4555: }
4556: if (&untie_user_hash($hashref)) {
4557: &Reply($client, "ok\n", $userinput);
4558: } else {
4559: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4560: "while attempting deldom\n", $userinput);
4561: }
4562: } else {
4563: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4564: "while attempting deldom\n", $userinput);
4565: }
4566: return 1;
4567: }
4568: ®ister_handler("deldom", \&del_domain_handler, 0, 1, 0);
4569:
4570:
1.348 raeburn 4571: # Unencrypted get from the namespace database file at the domain level.
4572: # This function retrieves a keyed item from a specific named database in the
4573: # domain directory.
4574: #
4575: # Parameters:
4576: # $cmd - Command request keyword (get).
4577: # $tail - Tail of the command. This is a colon separated list
4578: # consisting of the domain and the 'namespace'
4579: # which selects the gdbm file to do the lookup in,
4580: # & separated list of keys to lookup. Note that
4581: # the values are returned as an & separated list too.
4582: # $client - File descriptor open on the client.
4583: # Returns:
4584: # 1 - Continue processing.
4585: # 0 - Exit.
4586: # Side effects:
4587: # reply is written to $client.
4588: #
4589:
4590: sub get_domain_handler {
4591: my ($cmd, $tail, $client) = @_;
4592:
1.461 foxr 4593:
1.348 raeburn 4594: my $userinput = "$client:$tail";
4595:
4596: my ($udom,$namespace,$what)=split(/:/,$tail,3);
4597: chomp($what);
4598: my @queries=split(/\&/,$what);
4599: my $qresult='';
4600: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_READER());
4601: if ($hashref) {
4602: for (my $i=0;$i<=$#queries;$i++) {
4603: $qresult.="$hashref->{$queries[$i]}&";
4604: }
4605: if (&untie_domain_hash($hashref)) {
4606: $qresult=~s/\&$//;
1.387 albertel 4607: &Reply($client, \$qresult, $userinput);
1.348 raeburn 4608: } else {
4609: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
4610: "while attempting getdom\n",$userinput);
4611: }
4612: } else {
4613: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4614: "while attempting getdom\n",$userinput);
4615: }
4616:
4617: return 1;
4618: }
1.360 raeburn 4619: ®ister_handler("getdom", \&get_domain_handler, 0, 1, 0);
1.348 raeburn 4620:
1.420 raeburn 4621: #
1.238 foxr 4622: # Puts an id to a domains id database.
4623: #
4624: # Parameters:
4625: # $cmd - The command that triggered us.
4626: # $tail - Remainder of the request other than the command. This is a
4627: # colon separated list containing:
4628: # $domain - The domain for which we are writing the id.
4629: # $pairs - The id info to write... this is and & separated list
4630: # of keyword=value.
4631: # $client - Socket open on the client.
4632: # Returns:
4633: # 1 - Continue processing.
4634: # Side effects:
4635: # reply is written to $client.
4636: #
4637: sub put_id_handler {
4638: my ($cmd,$tail,$client) = @_;
4639:
4640:
4641: my $userinput = "$cmd:$tail";
4642:
4643: my ($udom,$what)=split(/:/,$tail);
4644: chomp($what);
4645: my @pairs=split(/\&/,$what);
4646: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
4647: "P", $what);
4648: if ($hashref) {
4649: foreach my $pair (@pairs) {
4650: my ($key,$value)=split(/=/,$pair);
4651: $hashref->{$key}=$value;
4652: }
1.311 albertel 4653: if (&untie_domain_hash($hashref)) {
1.238 foxr 4654: &Reply($client, "ok\n", $userinput);
4655: } else {
4656: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4657: "while attempting idput\n", $userinput);
4658: }
4659: } else {
4660: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4661: "while attempting idput\n", $userinput);
4662: }
4663:
4664: return 1;
4665: }
1.263 albertel 4666: ®ister_handler("idput", \&put_id_handler, 0, 1, 0);
1.238 foxr 4667:
4668: #
4669: # Retrieves a set of id values from the id database.
4670: # Returns an & separated list of results, one for each requested id to the
4671: # client.
4672: #
4673: # Parameters:
4674: # $cmd - Command keyword that caused us to be dispatched.
4675: # $tail - Tail of the command. Consists of a colon separated:
4676: # domain - the domain whose id table we dump
4677: # ids Consists of an & separated list of
4678: # id keywords whose values will be fetched.
4679: # nonexisting keywords will have an empty value.
4680: # $client - Socket open on the client.
4681: #
4682: # Returns:
4683: # 1 - indicating processing should continue.
4684: # Side effects:
4685: # An & separated list of results is written to $client.
4686: #
4687: sub get_id_handler {
4688: my ($cmd, $tail, $client) = @_;
4689:
4690:
4691: my $userinput = "$client:$tail";
4692:
4693: my ($udom,$what)=split(/:/,$tail);
4694: chomp($what);
4695: my @queries=split(/\&/,$what);
4696: my $qresult='';
4697: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_READER());
4698: if ($hashref) {
4699: for (my $i=0;$i<=$#queries;$i++) {
4700: $qresult.="$hashref->{$queries[$i]}&";
4701: }
1.311 albertel 4702: if (&untie_domain_hash($hashref)) {
1.238 foxr 4703: $qresult=~s/\&$//;
1.387 albertel 4704: &Reply($client, \$qresult, $userinput);
1.238 foxr 4705: } else {
4706: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
4707: "while attempting idget\n",$userinput);
4708: }
4709: } else {
4710: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4711: "while attempting idget\n",$userinput);
4712: }
4713:
4714: return 1;
4715: }
1.263 albertel 4716: ®ister_handler("idget", \&get_id_handler, 0, 1, 0);
1.238 foxr 4717:
1.501 raeburn 4718: # Deletes one or more ids in a domain's id database.
4719: #
4720: # Parameters:
4721: # $cmd - Command keyword (iddel).
4722: # $tail - Command tail. In this case a colon
4723: # separated list containing:
4724: # The domain for which we are deleting the id(s).
4725: # &-separated list of id(s) to delete.
4726: # $client - File open on client socket.
4727: # Returns:
4728: # 1 - Continue processing
4729: # 0 - Exit server.
4730: #
4731: #
4732:
4733: sub del_id_handler {
4734: my ($cmd,$tail,$client) = @_;
4735:
4736: my $userinput = "$cmd:$tail";
4737:
4738: my ($udom,$what)=split(/:/,$tail);
4739: chomp($what);
4740: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
4741: "D", $what);
4742: if ($hashref) {
4743: my @keys=split(/\&/,$what);
4744: foreach my $key (@keys) {
4745: delete($hashref->{$key});
4746: }
4747: if (&untie_user_hash($hashref)) {
4748: &Reply($client, "ok\n", $userinput);
4749: } else {
4750: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4751: "while attempting iddel\n", $userinput);
4752: }
4753: } else {
4754: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4755: "while attempting iddel\n", $userinput);
4756: }
4757: return 1;
4758: }
4759: ®ister_handler("iddel", \&del_id_handler, 0, 1, 0);
4760:
1.238 foxr 4761: #
1.299 raeburn 4762: # Puts broadcast e-mail sent by Domain Coordinator in nohist_dcmail database
4763: #
4764: # Parameters
4765: # $cmd - Command keyword that caused us to be dispatched.
4766: # $tail - Tail of the command. Consists of a colon separated:
4767: # domain - the domain whose dcmail we are recording
4768: # email Consists of key=value pair
4769: # where key is unique msgid
4770: # and value is message (in XML)
4771: # $client - Socket open on the client.
4772: #
4773: # Returns:
4774: # 1 - indicating processing should continue.
4775: # Side effects
4776: # reply is written to $client.
4777: #
4778: sub put_dcmail_handler {
4779: my ($cmd,$tail,$client) = @_;
4780: my $userinput = "$cmd:$tail";
1.463 foxr 4781:
4782:
1.299 raeburn 4783: my ($udom,$what)=split(/:/,$tail);
4784: chomp($what);
4785: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
4786: if ($hashref) {
4787: my ($key,$value)=split(/=/,$what);
4788: $hashref->{$key}=$value;
4789: }
1.311 albertel 4790: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4791: &Reply($client, "ok\n", $userinput);
4792: } else {
4793: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4794: "while attempting dcmailput\n", $userinput);
4795: }
4796: return 1;
4797: }
4798: ®ister_handler("dcmailput", \&put_dcmail_handler, 0, 1, 0);
4799:
4800: #
4801: # Retrieves broadcast e-mail from nohist_dcmail database
4802: # Returns to client an & separated list of key=value pairs,
4803: # where key is msgid and value is message information.
4804: #
4805: # Parameters
4806: # $cmd - Command keyword that caused us to be dispatched.
4807: # $tail - Tail of the command. Consists of a colon separated:
4808: # domain - the domain whose dcmail table we dump
4809: # startfilter - beginning of time window
4810: # endfilter - end of time window
4811: # sendersfilter - & separated list of username:domain
4812: # for senders to search for.
4813: # $client - Socket open on the client.
4814: #
4815: # Returns:
4816: # 1 - indicating processing should continue.
4817: # Side effects
4818: # reply (& separated list of msgid=messageinfo pairs) is
4819: # written to $client.
4820: #
4821: sub dump_dcmail_handler {
4822: my ($cmd, $tail, $client) = @_;
4823:
4824: my $userinput = "$cmd:$tail";
4825: my ($udom,$startfilter,$endfilter,$sendersfilter) = split(/:/,$tail);
4826: chomp($sendersfilter);
4827: my @senders = ();
4828: if (defined($startfilter)) {
4829: $startfilter=&unescape($startfilter);
4830: } else {
4831: $startfilter='.';
4832: }
4833: if (defined($endfilter)) {
4834: $endfilter=&unescape($endfilter);
4835: } else {
4836: $endfilter='.';
4837: }
4838: if (defined($sendersfilter)) {
4839: $sendersfilter=&unescape($sendersfilter);
1.300 albertel 4840: @senders = map { &unescape($_) } split(/\&/,$sendersfilter);
1.299 raeburn 4841: }
4842:
4843: my $qresult='';
4844: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
4845: if ($hashref) {
4846: while (my ($key,$value) = each(%$hashref)) {
4847: my $match = 1;
1.303 albertel 4848: my ($timestamp,$subj,$uname,$udom) =
4849: split(/:/,&unescape(&unescape($key)),5); # yes, twice really
1.299 raeburn 4850: $subj = &unescape($subj);
4851: unless ($startfilter eq '.' || !defined($startfilter)) {
4852: if ($timestamp < $startfilter) {
4853: $match = 0;
4854: }
4855: }
4856: unless ($endfilter eq '.' || !defined($endfilter)) {
4857: if ($timestamp > $endfilter) {
4858: $match = 0;
4859: }
4860: }
4861: unless (@senders < 1) {
4862: unless (grep/^$uname:$udom$/,@senders) {
4863: $match = 0;
4864: }
4865: }
4866: if ($match == 1) {
4867: $qresult.=$key.'='.$value.'&';
4868: }
4869: }
1.311 albertel 4870: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4871: chop($qresult);
1.387 albertel 4872: &Reply($client, \$qresult, $userinput);
1.299 raeburn 4873: } else {
4874: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4875: "while attempting dcmaildump\n", $userinput);
4876: }
4877: } else {
4878: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4879: "while attempting dcmaildump\n", $userinput);
4880: }
4881: return 1;
4882: }
4883:
4884: ®ister_handler("dcmaildump", \&dump_dcmail_handler, 0, 1, 0);
4885:
4886: #
4887: # Puts domain roles in nohist_domainroles database
4888: #
4889: # Parameters
4890: # $cmd - Command keyword that caused us to be dispatched.
4891: # $tail - Tail of the command. Consists of a colon separated:
4892: # domain - the domain whose roles we are recording
4893: # role - Consists of key=value pair
4894: # where key is unique role
4895: # and value is start/end date information
4896: # $client - Socket open on the client.
4897: #
4898: # Returns:
4899: # 1 - indicating processing should continue.
4900: # Side effects
4901: # reply is written to $client.
4902: #
4903:
4904: sub put_domainroles_handler {
4905: my ($cmd,$tail,$client) = @_;
4906:
4907: my $userinput = "$cmd:$tail";
4908: my ($udom,$what)=split(/:/,$tail);
4909: chomp($what);
4910: my @pairs=split(/\&/,$what);
4911: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
4912: if ($hashref) {
4913: foreach my $pair (@pairs) {
4914: my ($key,$value)=split(/=/,$pair);
4915: $hashref->{$key}=$value;
4916: }
1.311 albertel 4917: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4918: &Reply($client, "ok\n", $userinput);
4919: } else {
4920: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4921: "while attempting domroleput\n", $userinput);
4922: }
4923: } else {
4924: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4925: "while attempting domroleput\n", $userinput);
4926: }
4927:
4928: return 1;
4929: }
4930:
4931: ®ister_handler("domroleput", \&put_domainroles_handler, 0, 1, 0);
4932:
4933: #
4934: # Retrieves domain roles from nohist_domainroles database
4935: # Returns to client an & separated list of key=value pairs,
4936: # where key is role and value is start and end date information.
4937: #
4938: # Parameters
4939: # $cmd - Command keyword that caused us to be dispatched.
4940: # $tail - Tail of the command. Consists of a colon separated:
4941: # domain - the domain whose domain roles table we dump
4942: # $client - Socket open on the client.
4943: #
4944: # Returns:
4945: # 1 - indicating processing should continue.
4946: # Side effects
4947: # reply (& separated list of role=start/end info pairs) is
4948: # written to $client.
4949: #
4950: sub dump_domainroles_handler {
4951: my ($cmd, $tail, $client) = @_;
4952:
4953: my $userinput = "$cmd:$tail";
4954: my ($udom,$startfilter,$endfilter,$rolesfilter) = split(/:/,$tail);
4955: chomp($rolesfilter);
4956: my @roles = ();
4957: if (defined($startfilter)) {
4958: $startfilter=&unescape($startfilter);
4959: } else {
4960: $startfilter='.';
4961: }
4962: if (defined($endfilter)) {
4963: $endfilter=&unescape($endfilter);
4964: } else {
4965: $endfilter='.';
4966: }
4967: if (defined($rolesfilter)) {
4968: $rolesfilter=&unescape($rolesfilter);
1.300 albertel 4969: @roles = split(/\&/,$rolesfilter);
1.299 raeburn 4970: }
1.421 raeburn 4971:
1.299 raeburn 4972: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
4973: if ($hashref) {
4974: my $qresult = '';
4975: while (my ($key,$value) = each(%$hashref)) {
4976: my $match = 1;
1.421 raeburn 4977: my ($end,$start) = split(/:/,&unescape($value));
1.299 raeburn 4978: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,&unescape($key));
1.421 raeburn 4979: unless (@roles < 1) {
4980: unless (grep/^\Q$trole\E$/,@roles) {
4981: $match = 0;
4982: next;
4983: }
4984: }
1.299 raeburn 4985: unless ($startfilter eq '.' || !defined($startfilter)) {
1.415 raeburn 4986: if ((defined($start)) && ($start >= $startfilter)) {
1.299 raeburn 4987: $match = 0;
1.421 raeburn 4988: next;
1.299 raeburn 4989: }
4990: }
4991: unless ($endfilter eq '.' || !defined($endfilter)) {
1.421 raeburn 4992: if ((defined($end)) && (($end > 0) && ($end <= $endfilter))) {
1.299 raeburn 4993: $match = 0;
1.421 raeburn 4994: next;
1.299 raeburn 4995: }
4996: }
4997: if ($match == 1) {
4998: $qresult.=$key.'='.$value.'&';
4999: }
5000: }
1.311 albertel 5001: if (&untie_domain_hash($hashref)) {
1.299 raeburn 5002: chop($qresult);
1.387 albertel 5003: &Reply($client, \$qresult, $userinput);
1.299 raeburn 5004: } else {
5005: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5006: "while attempting domrolesdump\n", $userinput);
5007: }
5008: } else {
5009: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
5010: "while attempting domrolesdump\n", $userinput);
5011: }
5012: return 1;
5013: }
5014:
5015: ®ister_handler("domrolesdump", \&dump_domainroles_handler, 0, 1, 0);
5016:
5017:
1.238 foxr 5018: # Process the tmpput command I'm not sure what this does.. Seems to
5019: # create a file in the lonDaemons/tmp directory of the form $id.tmp
5020: # where Id is the client's ip concatenated with a sequence number.
5021: # The file will contain some value that is passed in. Is this e.g.
5022: # a login token?
5023: #
5024: # Parameters:
5025: # $cmd - The command that got us dispatched.
5026: # $tail - The remainder of the request following $cmd:
5027: # In this case this will be the contents of the file.
5028: # $client - Socket connected to the client.
5029: # Returns:
5030: # 1 indicating processing can continue.
5031: # Side effects:
5032: # A file is created in the local filesystem.
5033: # A reply is sent to the client.
5034: sub tmp_put_handler {
5035: my ($cmd, $what, $client) = @_;
5036:
5037: my $userinput = "$cmd:$what"; # Reconstruct for logging.
5038:
1.347 raeburn 5039: my ($record,$context) = split(/:/,$what);
5040: if ($context ne '') {
5041: chomp($context);
5042: $context = &unescape($context);
5043: }
5044: my ($id,$store);
1.238 foxr 5045: $tmpsnum++;
1.454 raeburn 5046: if (($context eq 'resetpw') || ($context eq 'createaccount')) {
1.347 raeburn 5047: $id = &md5_hex(&md5_hex(time.{}.rand().$$));
5048: } else {
5049: $id = $$.'_'.$clientip.'_'.$tmpsnum;
5050: }
1.238 foxr 5051: $id=~s/\W/\_/g;
1.347 raeburn 5052: $record=~s/\n//g;
1.238 foxr 5053: my $execdir=$perlvar{'lonDaemons'};
5054: if ($store=IO::File->new(">$execdir/tmp/$id.tmp")) {
1.347 raeburn 5055: print $store $record;
1.238 foxr 5056: close $store;
1.387 albertel 5057: &Reply($client, \$id, $userinput);
1.238 foxr 5058: } else {
5059: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
5060: "while attempting tmpput\n", $userinput);
5061: }
5062: return 1;
5063:
5064: }
5065: ®ister_handler("tmpput", \&tmp_put_handler, 0, 1, 0);
1.263 albertel 5066:
1.238 foxr 5067: # Processes the tmpget command. This command returns the contents
5068: # of a temporary resource file(?) created via tmpput.
5069: #
5070: # Paramters:
5071: # $cmd - Command that got us dispatched.
5072: # $id - Tail of the command, contain the id of the resource
5073: # we want to fetch.
5074: # $client - socket open on the client.
5075: # Return:
5076: # 1 - Inidcating processing can continue.
5077: # Side effects:
5078: # A reply is sent to the client.
5079: #
5080: sub tmp_get_handler {
5081: my ($cmd, $id, $client) = @_;
5082:
5083: my $userinput = "$cmd:$id";
5084:
5085:
5086: $id=~s/\W/\_/g;
5087: my $store;
5088: my $execdir=$perlvar{'lonDaemons'};
5089: if ($store=IO::File->new("$execdir/tmp/$id.tmp")) {
5090: my $reply=<$store>;
1.387 albertel 5091: &Reply( $client, \$reply, $userinput);
1.238 foxr 5092: close $store;
5093: } else {
5094: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
5095: "while attempting tmpget\n", $userinput);
5096: }
5097:
5098: return 1;
5099: }
5100: ®ister_handler("tmpget", \&tmp_get_handler, 0, 1, 0);
1.263 albertel 5101:
1.238 foxr 5102: #
5103: # Process the tmpdel command. This command deletes a temp resource
5104: # created by the tmpput command.
5105: #
5106: # Parameters:
5107: # $cmd - Command that got us here.
5108: # $id - Id of the temporary resource created.
5109: # $client - socket open on the client process.
5110: #
5111: # Returns:
5112: # 1 - Indicating processing should continue.
5113: # Side Effects:
5114: # A file is deleted
5115: # A reply is sent to the client.
5116: sub tmp_del_handler {
5117: my ($cmd, $id, $client) = @_;
5118:
5119: my $userinput= "$cmd:$id";
5120:
5121: chomp($id);
5122: $id=~s/\W/\_/g;
5123: my $execdir=$perlvar{'lonDaemons'};
5124: if (unlink("$execdir/tmp/$id.tmp")) {
5125: &Reply($client, "ok\n", $userinput);
5126: } else {
5127: &Failure( $client, "error: ".($!+0)."Unlink tmp Failed ".
5128: "while attempting tmpdel\n", $userinput);
5129: }
5130:
5131: return 1;
5132:
5133: }
5134: ®ister_handler("tmpdel", \&tmp_del_handler, 0, 1, 0);
1.263 albertel 5135:
1.238 foxr 5136: #
1.246 foxr 5137: # Processes the setannounce command. This command
5138: # creates a file named announce.txt in the top directory of
5139: # the documentn root and sets its contents. The announce.txt file is
5140: # printed in its entirety at the LonCAPA login page. Note:
5141: # once the announcement.txt fileis created it cannot be deleted.
5142: # However, setting the contents of the file to empty removes the
5143: # announcement from the login page of loncapa so who cares.
5144: #
5145: # Parameters:
5146: # $cmd - The command that got us dispatched.
5147: # $announcement - The text of the announcement.
5148: # $client - Socket open on the client process.
5149: # Retunrns:
5150: # 1 - Indicating request processing should continue
5151: # Side Effects:
5152: # The file {DocRoot}/announcement.txt is created.
5153: # A reply is sent to $client.
5154: #
5155: sub set_announce_handler {
5156: my ($cmd, $announcement, $client) = @_;
5157:
5158: my $userinput = "$cmd:$announcement";
5159:
5160: chomp($announcement);
5161: $announcement=&unescape($announcement);
5162: if (my $store=IO::File->new('>'.$perlvar{'lonDocRoot'}.
5163: '/announcement.txt')) {
5164: print $store $announcement;
5165: close $store;
5166: &Reply($client, "ok\n", $userinput);
5167: } else {
5168: &Failure($client, "error: ".($!+0)."\n", $userinput);
5169: }
5170:
5171: return 1;
5172: }
5173: ®ister_handler("setannounce", \&set_announce_handler, 0, 1, 0);
1.263 albertel 5174:
1.246 foxr 5175: #
5176: # Return the version of the daemon. This can be used to determine
5177: # the compatibility of cross version installations or, alternatively to
5178: # simply know who's out of date and who isn't. Note that the version
5179: # is returned concatenated with the tail.
5180: # Parameters:
5181: # $cmd - the request that dispatched to us.
5182: # $tail - Tail of the request (client's version?).
5183: # $client - Socket open on the client.
5184: #Returns:
5185: # 1 - continue processing requests.
5186: # Side Effects:
5187: # Replies with version to $client.
5188: sub get_version_handler {
5189: my ($cmd, $tail, $client) = @_;
5190:
5191: my $userinput = $cmd.$tail;
5192:
5193: &Reply($client, &version($userinput)."\n", $userinput);
5194:
5195:
5196: return 1;
5197: }
5198: ®ister_handler("version", \&get_version_handler, 0, 1, 0);
1.263 albertel 5199:
1.246 foxr 5200: # Set the current host and domain. This is used to support
5201: # multihomed systems. Each IP of the system, or even separate daemons
5202: # on the same IP can be treated as handling a separate lonCAPA virtual
5203: # machine. This command selects the virtual lonCAPA. The client always
5204: # knows the right one since it is lonc and it is selecting the domain/system
5205: # from the hosts.tab file.
5206: # Parameters:
5207: # $cmd - Command that dispatched us.
5208: # $tail - Tail of the command (domain/host requested).
5209: # $socket - Socket open on the client.
5210: #
5211: # Returns:
5212: # 1 - Indicates the program should continue to process requests.
5213: # Side-effects:
5214: # The default domain/system context is modified for this daemon.
5215: # a reply is sent to the client.
5216: #
5217: sub set_virtual_host_handler {
5218: my ($cmd, $tail, $socket) = @_;
5219:
5220: my $userinput ="$cmd:$tail";
5221:
5222: &Reply($client, &sethost($userinput)."\n", $userinput);
5223:
5224:
5225: return 1;
5226: }
1.247 albertel 5227: ®ister_handler("sethost", \&set_virtual_host_handler, 0, 1, 0);
1.246 foxr 5228:
5229: # Process a request to exit:
5230: # - "bye" is sent to the client.
5231: # - The client socket is shutdown and closed.
5232: # - We indicate to the caller that we should exit.
5233: # Formal Parameters:
5234: # $cmd - The command that got us here.
5235: # $tail - Tail of the command (empty).
5236: # $client - Socket open on the tail.
5237: # Returns:
5238: # 0 - Indicating the program should exit!!
5239: #
5240: sub exit_handler {
5241: my ($cmd, $tail, $client) = @_;
5242:
5243: my $userinput = "$cmd:$tail";
5244:
5245: &logthis("Client $clientip ($clientname) hanging up: $userinput");
5246: &Reply($client, "bye\n", $userinput);
5247: $client->shutdown(2); # shutdown the socket forcibly.
5248: $client->close();
5249:
5250: return 0;
5251: }
1.248 foxr 5252: ®ister_handler("exit", \&exit_handler, 0,1,1);
5253: ®ister_handler("init", \&exit_handler, 0,1,1);
5254: ®ister_handler("quit", \&exit_handler, 0,1,1);
5255:
5256: # Determine if auto-enrollment is enabled.
5257: # Note that the original had what I believe to be a defect.
5258: # The original returned 0 if the requestor was not a registerd client.
5259: # It should return "refused".
5260: # Formal Parameters:
5261: # $cmd - The command that invoked us.
5262: # $tail - The tail of the command (Extra command parameters.
5263: # $client - The socket open on the client that issued the request.
5264: # Returns:
5265: # 1 - Indicating processing should continue.
5266: #
5267: sub enrollment_enabled_handler {
5268: my ($cmd, $tail, $client) = @_;
5269: my $userinput = $cmd.":".$tail; # For logging purposes.
5270:
5271:
1.337 albertel 5272: my ($cdom) = split(/:/, $tail, 2); # Domain we're asking about.
5273:
1.248 foxr 5274: my $outcome = &localenroll::run($cdom);
1.387 albertel 5275: &Reply($client, \$outcome, $userinput);
1.248 foxr 5276:
5277: return 1;
5278: }
5279: ®ister_handler("autorun", \&enrollment_enabled_handler, 0, 1, 0);
5280:
1.417 raeburn 5281: #
1.423 raeburn 5282: # Validate an institutional code used for a LON-CAPA course.
1.417 raeburn 5283: #
5284: # Formal Parameters:
5285: # $cmd - The command request that got us dispatched.
5286: # $tail - The tail of the command. In this case,
5287: # this is a colon separated set of words that will be split
5288: # into:
1.424 raeburn 5289: # $dom - The domain for which the check of
5290: # institutional course code will occur.
5291: #
5292: # $instcode - The institutional code for the course
5293: # being requested, or validated for rights
5294: # to request.
5295: #
5296: # $owner - The course requestor (who will be the
5297: # course owner, in the form username:domain
5298: #
1.417 raeburn 5299: # $client - Socket open on the client.
5300: # Returns:
5301: # 1 - Indicating processing should continue.
5302: #
5303: sub validate_instcode_handler {
5304: my ($cmd, $tail, $client) = @_;
5305: my $userinput = "$cmd:$tail";
1.423 raeburn 5306: my ($dom,$instcode,$owner) = split(/:/, $tail);
1.422 raeburn 5307: $instcode = &unescape($instcode);
5308: $owner = &unescape($owner);
1.498 raeburn 5309: my ($outcome,$description,$credits) =
1.426 raeburn 5310: &localenroll::validate_instcode($dom,$instcode,$owner);
1.498 raeburn 5311: my $result = &escape($outcome).'&'.&escape($description).'&'.
5312: &escape($credits);
1.426 raeburn 5313: &Reply($client, \$result, $userinput);
1.417 raeburn 5314:
5315: return 1;
5316: }
5317: ®ister_handler("autovalidateinstcode", \&validate_instcode_handler, 0, 1, 0);
5318:
1.248 foxr 5319: # Get the official sections for which auto-enrollment is possible.
5320: # Since the admin people won't know about 'unofficial sections'
5321: # we cannot auto-enroll on them.
5322: # Formal Parameters:
5323: # $cmd - The command request that got us dispatched here.
5324: # $tail - The remainder of the request. In our case this
5325: # will be split into:
5326: # $coursecode - The course name from the admin point of view.
5327: # $cdom - The course's domain(?).
5328: # $client - Socket open on the client.
5329: # Returns:
5330: # 1 - Indiciting processing should continue.
5331: #
5332: sub get_sections_handler {
5333: my ($cmd, $tail, $client) = @_;
5334: my $userinput = "$cmd:$tail";
5335:
5336: my ($coursecode, $cdom) = split(/:/, $tail);
5337: my @secs = &localenroll::get_sections($coursecode,$cdom);
5338: my $seclist = &escape(join(':',@secs));
5339:
1.387 albertel 5340: &Reply($client, \$seclist, $userinput);
1.248 foxr 5341:
5342:
5343: return 1;
5344: }
5345: ®ister_handler("autogetsections", \&get_sections_handler, 0, 1, 0);
5346:
5347: # Validate the owner of a new course section.
5348: #
5349: # Formal Parameters:
5350: # $cmd - Command that got us dispatched.
5351: # $tail - the remainder of the command. For us this consists of a
5352: # colon separated string containing:
5353: # $inst - Course Id from the institutions point of view.
5354: # $owner - Proposed owner of the course.
5355: # $cdom - Domain of the course (from the institutions
5356: # point of view?)..
5357: # $client - Socket open on the client.
5358: #
5359: # Returns:
5360: # 1 - Processing should continue.
5361: #
5362: sub validate_course_owner_handler {
5363: my ($cmd, $tail, $client) = @_;
5364: my $userinput = "$cmd:$tail";
1.470 raeburn 5365: my ($inst_course_id, $owner, $cdom, $coowners) = split(/:/, $tail);
5366:
1.336 raeburn 5367: $owner = &unescape($owner);
1.470 raeburn 5368: $coowners = &unescape($coowners);
5369: my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom,$coowners);
1.387 albertel 5370: &Reply($client, \$outcome, $userinput);
1.248 foxr 5371:
5372:
5373:
5374: return 1;
5375: }
5376: ®ister_handler("autonewcourse", \&validate_course_owner_handler, 0, 1, 0);
1.263 albertel 5377:
1.248 foxr 5378: #
5379: # Validate a course section in the official schedule of classes
5380: # from the institutions point of view (part of autoenrollment).
5381: #
5382: # Formal Parameters:
5383: # $cmd - The command request that got us dispatched.
5384: # $tail - The tail of the command. In this case,
5385: # this is a colon separated set of words that will be split
5386: # into:
5387: # $inst_course_id - The course/section id from the
5388: # institutions point of view.
5389: # $cdom - The domain from the institutions
5390: # point of view.
5391: # $client - Socket open on the client.
5392: # Returns:
5393: # 1 - Indicating processing should continue.
5394: #
5395: sub validate_course_section_handler {
5396: my ($cmd, $tail, $client) = @_;
5397: my $userinput = "$cmd:$tail";
5398: my ($inst_course_id, $cdom) = split(/:/, $tail);
5399:
5400: my $outcome=&localenroll::validate_courseID($inst_course_id,$cdom);
1.387 albertel 5401: &Reply($client, \$outcome, $userinput);
1.248 foxr 5402:
5403:
5404: return 1;
5405: }
5406: ®ister_handler("autovalidatecourse", \&validate_course_section_handler, 0, 1, 0);
5407:
5408: #
1.340 raeburn 5409: # Validate course owner's access to enrollment data for specific class section.
5410: #
5411: #
5412: # Formal Parameters:
5413: # $cmd - The command request that got us dispatched.
5414: # $tail - The tail of the command. In this case this is a colon separated
5415: # set of words that will be split into:
5416: # $inst_class - Institutional code for the specific class section
5417: # $courseowner - The escaped username:domain of the course owner
5418: # $cdom - The domain of the course from the institution's
5419: # point of view.
5420: # $client - The socket open on the client.
5421: # Returns:
5422: # 1 - continue processing.
5423: #
5424:
5425: sub validate_class_access_handler {
5426: my ($cmd, $tail, $client) = @_;
5427: my $userinput = "$cmd:$tail";
1.383 raeburn 5428: my ($inst_class,$ownerlist,$cdom) = split(/:/, $tail);
1.392 raeburn 5429: my $owners = &unescape($ownerlist);
1.341 albertel 5430: my $outcome;
5431: eval {
5432: local($SIG{__DIE__})='DEFAULT';
1.392 raeburn 5433: $outcome=&localenroll::check_section($inst_class,$owners,$cdom);
1.341 albertel 5434: };
1.387 albertel 5435: &Reply($client,\$outcome, $userinput);
1.340 raeburn 5436:
5437: return 1;
5438: }
5439: ®ister_handler("autovalidateclass_sec", \&validate_class_access_handler, 0, 1, 0);
5440:
5441: #
5442: # Create a password for a new LON-CAPA user added by auto-enrollment.
5443: # Only used for case where authentication method for new user is localauth
1.248 foxr 5444: #
5445: # Formal Parameters:
5446: # $cmd - The command request that got us dispatched.
5447: # $tail - The tail of the command. In this case this is a colon separated
5448: # set of words that will be split into:
1.340 raeburn 5449: # $authparam - An authentication parameter (localauth parameter).
1.248 foxr 5450: # $cdom - The domain of the course from the institution's
5451: # point of view.
5452: # $client - The socket open on the client.
5453: # Returns:
5454: # 1 - continue processing.
5455: #
5456: sub create_auto_enroll_password_handler {
5457: my ($cmd, $tail, $client) = @_;
5458: my $userinput = "$cmd:$tail";
5459:
5460: my ($authparam, $cdom) = split(/:/, $userinput);
5461:
5462: my ($create_passwd,$authchk);
5463: ($authparam,
5464: $create_passwd,
5465: $authchk) = &localenroll::create_password($authparam,$cdom);
5466:
5467: &Reply($client, &escape($authparam.':'.$create_passwd.':'.$authchk)."\n",
5468: $userinput);
5469:
5470:
5471: return 1;
5472: }
5473: ®ister_handler("autocreatepassword", \&create_auto_enroll_password_handler,
5474: 0, 1, 0);
5475:
1.522 raeburn 5476: sub auto_export_grades_handler {
5477: my ($cmd, $tail, $client) = @_;
5478: my $userinput = "$cmd:$tail";
5479: my ($cdom,$cnum,$info,$data) = split(/:/,$tail);
5480: my $inforef = &Apache::lonnet::thaw_unescape($info);
5481: my $dataref = &Apache::lonnet::thaw_unescape($data);
5482: my ($outcome,$result);;
5483: eval {
5484: local($SIG{__DIE__})='DEFAULT';
5485: my %rtnhash;
5486: $outcome=&localenroll::export_grades($cdom,$cnum,$inforef,$dataref,\%rtnhash);
5487: if ($outcome eq 'ok') {
5488: foreach my $key (keys(%rtnhash)) {
5489: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&';
5490: }
5491: $result =~ s/\&$//;
5492: }
5493: };
5494: if (!$@) {
5495: if ($outcome eq 'ok') {
5496: if ($cipher) {
5497: my $cmdlength=length($result);
5498: $result.=" ";
5499: my $encresult='';
5500: for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
5501: $encresult.= unpack("H16",
5502: $cipher->encrypt(substr($result,
5503: $encidx,
5504: 8)));
5505: }
5506: &Reply( $client, "enc:$cmdlength:$encresult\n", $userinput);
5507: } else {
5508: &Failure( $client, "error:no_key\n", $userinput);
5509: }
5510: } else {
5511: &Reply($client, "$outcome\n", $userinput);
5512: }
5513: } else {
5514: &Failure($client,"export_error\n",$userinput);
5515: }
5516: return 1;
5517: }
5518: ®ister_handler("autoexportgrades", \&auto_export_grades_handler,
5519: 0, 1, 0);
5520:
1.248 foxr 5521: # Retrieve and remove temporary files created by/during autoenrollment.
5522: #
5523: # Formal Parameters:
5524: # $cmd - The command that got us dispatched.
5525: # $tail - The tail of the command. In our case this is a colon
5526: # separated list that will be split into:
5527: # $filename - The name of the file to remove.
5528: # The filename is given as a path relative to
5529: # the LonCAPA temp file directory.
5530: # $client - Socket open on the client.
5531: #
5532: # Returns:
5533: # 1 - Continue processing.
5534: sub retrieve_auto_file_handler {
5535: my ($cmd, $tail, $client) = @_;
5536: my $userinput = "cmd:$tail";
5537:
5538: my ($filename) = split(/:/, $tail);
5539:
5540: my $source = $perlvar{'lonDaemons'}.'/tmp/'.$filename;
1.521 raeburn 5541:
5542: if ($filename =~m{/\.\./}) {
5543: &Failure($client, "refused\n", $userinput);
5544: } elsif ( (-e $source) && ($filename ne '') ) {
1.248 foxr 5545: my $reply = '';
5546: if (open(my $fh,$source)) {
5547: while (<$fh>) {
5548: chomp($_);
5549: $_ =~ s/^\s+//g;
5550: $_ =~ s/\s+$//g;
5551: $reply .= $_;
5552: }
5553: close($fh);
5554: &Reply($client, &escape($reply)."\n", $userinput);
5555:
5556: # Does this have to be uncommented??!? (RF).
5557: #
5558: # unlink($source);
5559: } else {
5560: &Failure($client, "error\n", $userinput);
5561: }
5562: } else {
5563: &Failure($client, "error\n", $userinput);
5564: }
5565:
5566:
5567: return 1;
5568: }
5569: ®ister_handler("autoretrieve", \&retrieve_auto_file_handler, 0,1,0);
5570:
1.423 raeburn 5571: sub crsreq_checks_handler {
5572: my ($cmd, $tail, $client) = @_;
5573: my $userinput = "$cmd:$tail";
5574: my $dom = $tail;
5575: my $result;
1.519 raeburn 5576: my @reqtypes = ('official','unofficial','community','textbook','placement');
1.423 raeburn 5577: eval {
5578: local($SIG{__DIE__})='DEFAULT';
5579: my %validations;
1.424 raeburn 5580: my $response = &localenroll::crsreq_checks($dom,\@reqtypes,
5581: \%validations);
1.423 raeburn 5582: if ($response eq 'ok') {
5583: foreach my $key (keys(%validations)) {
5584: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
5585: }
5586: $result =~ s/\&$//;
5587: } else {
5588: $result = 'error';
5589: }
5590: };
5591: if (!$@) {
5592: &Reply($client, \$result, $userinput);
5593: } else {
5594: &Failure($client,"unknown_cmd\n",$userinput);
5595: }
5596: return 1;
5597: }
5598: ®ister_handler("autocrsreqchecks", \&crsreq_checks_handler, 0, 1, 0);
5599:
5600: sub validate_crsreq_handler {
5601: my ($cmd, $tail, $client) = @_;
5602: my $userinput = "$cmd:$tail";
1.508 raeburn 5603: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$customdata) = split(/:/, $tail);
1.423 raeburn 5604: $instcode = &unescape($instcode);
5605: $owner = &unescape($owner);
5606: $crstype = &unescape($crstype);
5607: $inststatuslist = &unescape($inststatuslist);
5608: $instcode = &unescape($instcode);
5609: $instseclist = &unescape($instseclist);
1.508 raeburn 5610: my $custominfo = &Apache::lonnet::thaw_unescape($customdata);
1.423 raeburn 5611: my $outcome;
5612: eval {
5613: local($SIG{__DIE__})='DEFAULT';
5614: $outcome = &localenroll::validate_crsreq($dom,$owner,$crstype,
5615: $inststatuslist,$instcode,
1.508 raeburn 5616: $instseclist,$custominfo);
1.423 raeburn 5617: };
5618: if (!$@) {
5619: &Reply($client, \$outcome, $userinput);
5620: } else {
5621: &Failure($client,"unknown_cmd\n",$userinput);
5622: }
5623: return 1;
5624: }
5625: ®ister_handler("autocrsreqvalidation", \&validate_crsreq_handler, 0, 1, 0);
5626:
1.506 raeburn 5627: sub crsreq_update_handler {
5628: my ($cmd, $tail, $client) = @_;
5629: my $userinput = "$cmd:$tail";
1.509 raeburn 5630: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,$code,
5631: $accessstart,$accessend,$infohashref) =
1.506 raeburn 5632: split(/:/, $tail);
5633: $crstype = &unescape($crstype);
5634: $action = &unescape($action);
5635: $ownername = &unescape($ownername);
5636: $ownerdomain = &unescape($ownerdomain);
5637: $fullname = &unescape($fullname);
5638: $title = &unescape($title);
5639: $code = &unescape($code);
1.509 raeburn 5640: $accessstart = &unescape($accessstart);
5641: $accessend = &unescape($accessend);
1.506 raeburn 5642: my $incoming = &Apache::lonnet::thaw_unescape($infohashref);
5643: my ($result,$outcome);
5644: eval {
5645: local($SIG{__DIE__})='DEFAULT';
5646: my %rtnhash;
5647: $outcome = &localenroll::crsreq_updates($cdom,$cnum,$crstype,$action,
5648: $ownername,$ownerdomain,$fullname,
1.509 raeburn 5649: $title,$code,$accessstart,$accessend,
5650: $incoming,\%rtnhash);
1.506 raeburn 5651: if ($outcome eq 'ok') {
1.515 raeburn 5652: my @posskeys = qw(createdweb createdmsg createdcustomized createdactions queuedweb queuedmsg formitems reviewweb validationjs onload javascript);
1.506 raeburn 5653: foreach my $key (keys(%rtnhash)) {
5654: if (grep(/^\Q$key\E/,@posskeys)) {
5655: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&';
5656: }
5657: }
5658: $result =~ s/\&$//;
5659: }
5660: };
5661: if (!$@) {
5662: if ($outcome eq 'ok') {
5663: &Reply($client, \$result, $userinput);
5664: } else {
5665: &Reply($client, "format_error\n", $userinput);
5666: }
5667: } else {
5668: &Failure($client,"unknown_cmd\n",$userinput);
5669: }
5670: return 1;
5671: }
5672: ®ister_handler("autocrsrequpdate", \&crsreq_update_handler, 0, 1, 0);
5673:
1.248 foxr 5674: #
5675: # Read and retrieve institutional code format (for support form).
5676: # Formal Parameters:
5677: # $cmd - Command that dispatched us.
5678: # $tail - Tail of the command. In this case it conatins
5679: # the course domain and the coursename.
5680: # $client - Socket open on the client.
5681: # Returns:
5682: # 1 - Continue processing.
5683: #
5684: sub get_institutional_code_format_handler {
5685: my ($cmd, $tail, $client) = @_;
5686: my $userinput = "$cmd:$tail";
5687:
5688: my $reply;
5689: my($cdom,$course) = split(/:/,$tail);
5690: my @pairs = split/\&/,$course;
5691: my %instcodes = ();
5692: my %codes = ();
5693: my @codetitles = ();
5694: my %cat_titles = ();
5695: my %cat_order = ();
5696: foreach (@pairs) {
5697: my ($key,$value) = split/=/,$_;
5698: $instcodes{&unescape($key)} = &unescape($value);
5699: }
5700: my $formatreply = &localenroll::instcode_format($cdom,
5701: \%instcodes,
5702: \%codes,
5703: \@codetitles,
5704: \%cat_titles,
5705: \%cat_order);
5706: if ($formatreply eq 'ok') {
1.365 albertel 5707: my $codes_str = &Apache::lonnet::hash2str(%codes);
5708: my $codetitles_str = &Apache::lonnet::array2str(@codetitles);
5709: my $cat_titles_str = &Apache::lonnet::hash2str(%cat_titles);
5710: my $cat_order_str = &Apache::lonnet::hash2str(%cat_order);
1.248 foxr 5711: &Reply($client,
5712: $codes_str.':'.$codetitles_str.':'.$cat_titles_str.':'
5713: .$cat_order_str."\n",
5714: $userinput);
5715: } else {
5716: # this else branch added by RF since if not ok, lonc will
5717: # hang waiting on reply until timeout.
5718: #
5719: &Reply($client, "format_error\n", $userinput);
5720: }
5721:
5722: return 1;
5723: }
1.265 albertel 5724: ®ister_handler("autoinstcodeformat",
5725: \&get_institutional_code_format_handler,0,1,0);
1.246 foxr 5726:
1.345 raeburn 5727: sub get_institutional_defaults_handler {
5728: my ($cmd, $tail, $client) = @_;
5729: my $userinput = "$cmd:$tail";
5730:
5731: my $dom = $tail;
5732: my %defaults_hash;
5733: my @code_order;
5734: my $outcome;
5735: eval {
5736: local($SIG{__DIE__})='DEFAULT';
5737: $outcome = &localenroll::instcode_defaults($dom,\%defaults_hash,
5738: \@code_order);
5739: };
5740: if (!$@) {
5741: if ($outcome eq 'ok') {
5742: my $result='';
5743: while (my ($key,$value) = each(%defaults_hash)) {
5744: $result.=&escape($key).'='.&escape($value).'&';
5745: }
5746: $result .= 'code_order='.&escape(join('&',@code_order));
1.387 albertel 5747: &Reply($client,\$result,$userinput);
1.345 raeburn 5748: } else {
5749: &Reply($client,"error\n", $userinput);
5750: }
5751: } else {
5752: &Failure($client,"unknown_cmd\n",$userinput);
5753: }
5754: }
5755: ®ister_handler("autoinstcodedefaults",
5756: \&get_institutional_defaults_handler,0,1,0);
5757:
1.416 raeburn 5758: sub get_possible_instcodes_handler {
5759: my ($cmd, $tail, $client) = @_;
5760: my $userinput = "$cmd:$tail";
5761:
5762: my $reply;
5763: my $cdom = $tail;
1.417 raeburn 5764: my (@codetitles,%cat_titles,%cat_order,@code_order);
1.416 raeburn 5765: my $formatreply = &localenroll::possible_instcodes($cdom,
5766: \@codetitles,
5767: \%cat_titles,
1.417 raeburn 5768: \%cat_order,
5769: \@code_order);
1.416 raeburn 5770: if ($formatreply eq 'ok') {
5771: my $result = join('&',map {&escape($_);} (@codetitles)).':';
1.417 raeburn 5772: $result .= join('&',map {&escape($_);} (@code_order)).':';
1.416 raeburn 5773: foreach my $key (keys(%cat_titles)) {
5774: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_titles{$key}).'&';
5775: }
5776: $result =~ s/\&$//;
5777: $result .= ':';
5778: foreach my $key (keys(%cat_order)) {
5779: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_order{$key}).'&';
5780: }
5781: $result =~ s/\&$//;
5782: &Reply($client,\$result,$userinput);
5783: } else {
5784: &Reply($client, "format_error\n", $userinput);
5785: }
5786: return 1;
5787: }
5788: ®ister_handler("autopossibleinstcodes",
5789: \&get_possible_instcodes_handler,0,1,0);
5790:
1.381 raeburn 5791: sub get_institutional_user_rules {
5792: my ($cmd, $tail, $client) = @_;
5793: my $userinput = "$cmd:$tail";
5794: my $dom = &unescape($tail);
5795: my (%rules_hash,@rules_order);
5796: my $outcome;
5797: eval {
5798: local($SIG{__DIE__})='DEFAULT';
5799: $outcome = &localenroll::username_rules($dom,\%rules_hash,\@rules_order);
5800: };
5801: if (!$@) {
5802: if ($outcome eq 'ok') {
5803: my $result;
5804: foreach my $key (keys(%rules_hash)) {
5805: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
5806: }
5807: $result =~ s/\&$//;
5808: $result .= ':';
5809: if (@rules_order > 0) {
5810: foreach my $item (@rules_order) {
5811: $result .= &escape($item).'&';
5812: }
5813: }
5814: $result =~ s/\&$//;
1.387 albertel 5815: &Reply($client,\$result,$userinput);
1.381 raeburn 5816: } else {
5817: &Reply($client,"error\n", $userinput);
5818: }
5819: } else {
5820: &Failure($client,"unknown_cmd\n",$userinput);
5821: }
5822: }
5823: ®ister_handler("instuserrules",\&get_institutional_user_rules,0,1,0);
5824:
1.389 raeburn 5825: sub get_institutional_id_rules {
5826: my ($cmd, $tail, $client) = @_;
5827: my $userinput = "$cmd:$tail";
5828: my $dom = &unescape($tail);
5829: my (%rules_hash,@rules_order);
5830: my $outcome;
5831: eval {
5832: local($SIG{__DIE__})='DEFAULT';
5833: $outcome = &localenroll::id_rules($dom,\%rules_hash,\@rules_order);
5834: };
5835: if (!$@) {
5836: if ($outcome eq 'ok') {
5837: my $result;
5838: foreach my $key (keys(%rules_hash)) {
5839: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
5840: }
5841: $result =~ s/\&$//;
5842: $result .= ':';
5843: if (@rules_order > 0) {
5844: foreach my $item (@rules_order) {
5845: $result .= &escape($item).'&';
5846: }
5847: }
5848: $result =~ s/\&$//;
5849: &Reply($client,\$result,$userinput);
5850: } else {
5851: &Reply($client,"error\n", $userinput);
5852: }
5853: } else {
5854: &Failure($client,"unknown_cmd\n",$userinput);
5855: }
5856: }
5857: ®ister_handler("instidrules",\&get_institutional_id_rules,0,1,0);
5858:
1.397 raeburn 5859: sub get_institutional_selfcreate_rules {
1.396 raeburn 5860: my ($cmd, $tail, $client) = @_;
5861: my $userinput = "$cmd:$tail";
5862: my $dom = &unescape($tail);
5863: my (%rules_hash,@rules_order);
5864: my $outcome;
5865: eval {
5866: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 5867: $outcome = &localenroll::selfcreate_rules($dom,\%rules_hash,\@rules_order);
1.396 raeburn 5868: };
5869: if (!$@) {
5870: if ($outcome eq 'ok') {
5871: my $result;
5872: foreach my $key (keys(%rules_hash)) {
5873: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
5874: }
5875: $result =~ s/\&$//;
5876: $result .= ':';
5877: if (@rules_order > 0) {
5878: foreach my $item (@rules_order) {
5879: $result .= &escape($item).'&';
5880: }
5881: }
5882: $result =~ s/\&$//;
5883: &Reply($client,\$result,$userinput);
5884: } else {
5885: &Reply($client,"error\n", $userinput);
5886: }
5887: } else {
5888: &Failure($client,"unknown_cmd\n",$userinput);
5889: }
5890: }
1.397 raeburn 5891: ®ister_handler("instemailrules",\&get_institutional_selfcreate_rules,0,1,0);
1.396 raeburn 5892:
1.381 raeburn 5893:
5894: sub institutional_username_check {
5895: my ($cmd, $tail, $client) = @_;
5896: my $userinput = "$cmd:$tail";
5897: my %rulecheck;
5898: my $outcome;
5899: my ($udom,$uname,@rules) = split(/:/,$tail);
5900: $udom = &unescape($udom);
5901: $uname = &unescape($uname);
5902: @rules = map {&unescape($_);} (@rules);
5903: eval {
5904: local($SIG{__DIE__})='DEFAULT';
5905: $outcome = &localenroll::username_check($udom,$uname,\@rules,\%rulecheck);
5906: };
5907: if (!$@) {
5908: if ($outcome eq 'ok') {
5909: my $result='';
5910: foreach my $key (keys(%rulecheck)) {
5911: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
5912: }
1.387 albertel 5913: &Reply($client,\$result,$userinput);
1.381 raeburn 5914: } else {
5915: &Reply($client,"error\n", $userinput);
5916: }
5917: } else {
5918: &Failure($client,"unknown_cmd\n",$userinput);
5919: }
5920: }
5921: ®ister_handler("instrulecheck",\&institutional_username_check,0,1,0);
5922:
1.389 raeburn 5923: sub institutional_id_check {
5924: my ($cmd, $tail, $client) = @_;
5925: my $userinput = "$cmd:$tail";
5926: my %rulecheck;
5927: my $outcome;
5928: my ($udom,$id,@rules) = split(/:/,$tail);
5929: $udom = &unescape($udom);
5930: $id = &unescape($id);
5931: @rules = map {&unescape($_);} (@rules);
5932: eval {
5933: local($SIG{__DIE__})='DEFAULT';
5934: $outcome = &localenroll::id_check($udom,$id,\@rules,\%rulecheck);
5935: };
5936: if (!$@) {
5937: if ($outcome eq 'ok') {
5938: my $result='';
5939: foreach my $key (keys(%rulecheck)) {
5940: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
5941: }
5942: &Reply($client,\$result,$userinput);
5943: } else {
5944: &Reply($client,"error\n", $userinput);
5945: }
5946: } else {
5947: &Failure($client,"unknown_cmd\n",$userinput);
5948: }
5949: }
5950: ®ister_handler("instidrulecheck",\&institutional_id_check,0,1,0);
1.345 raeburn 5951:
1.397 raeburn 5952: sub institutional_selfcreate_check {
1.396 raeburn 5953: my ($cmd, $tail, $client) = @_;
5954: my $userinput = "$cmd:$tail";
5955: my %rulecheck;
5956: my $outcome;
5957: my ($udom,$email,@rules) = split(/:/,$tail);
5958: $udom = &unescape($udom);
5959: $email = &unescape($email);
5960: @rules = map {&unescape($_);} (@rules);
5961: eval {
5962: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 5963: $outcome = &localenroll::selfcreate_check($udom,$email,\@rules,\%rulecheck);
1.396 raeburn 5964: };
5965: if (!$@) {
5966: if ($outcome eq 'ok') {
5967: my $result='';
5968: foreach my $key (keys(%rulecheck)) {
5969: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
5970: }
5971: &Reply($client,\$result,$userinput);
5972: } else {
5973: &Reply($client,"error\n", $userinput);
5974: }
5975: } else {
5976: &Failure($client,"unknown_cmd\n",$userinput);
5977: }
5978: }
1.397 raeburn 5979: ®ister_handler("instselfcreatecheck",\&institutional_selfcreate_check,0,1,0);
1.396 raeburn 5980:
1.317 raeburn 5981: # Get domain specific conditions for import of student photographs to a course
5982: #
5983: # Retrieves information from photo_permission subroutine in localenroll.
5984: # Returns outcome (ok) if no processing errors, and whether course owner is
5985: # required to accept conditions of use (yes/no).
5986: #
5987: #
5988: sub photo_permission_handler {
5989: my ($cmd, $tail, $client) = @_;
5990: my $userinput = "$cmd:$tail";
5991: my $cdom = $tail;
5992: my ($perm_reqd,$conditions);
1.320 albertel 5993: my $outcome;
5994: eval {
5995: local($SIG{__DIE__})='DEFAULT';
5996: $outcome = &localenroll::photo_permission($cdom,\$perm_reqd,
5997: \$conditions);
5998: };
5999: if (!$@) {
6000: &Reply($client, &escape($outcome.':'.$perm_reqd.':'. $conditions)."\n",
6001: $userinput);
6002: } else {
6003: &Failure($client,"unknown_cmd\n",$userinput);
6004: }
6005: return 1;
1.317 raeburn 6006: }
6007: ®ister_handler("autophotopermission",\&photo_permission_handler,0,1,0);
6008:
6009: #
6010: # Checks if student photo is available for a user in the domain, in the user's
6011: # directory (in /userfiles/internal/studentphoto.jpg).
6012: # Uses localstudentphoto:fetch() to ensure there is an up to date copy of
6013: # the student's photo.
6014:
6015: sub photo_check_handler {
6016: my ($cmd, $tail, $client) = @_;
6017: my $userinput = "$cmd:$tail";
6018: my ($udom,$uname,$pid) = split(/:/,$tail);
6019: $udom = &unescape($udom);
6020: $uname = &unescape($uname);
6021: $pid = &unescape($pid);
6022: my $path=&propath($udom,$uname).'/userfiles/internal/';
6023: if (!-e $path) {
6024: &mkpath($path);
6025: }
6026: my $response;
6027: my $result = &localstudentphoto::fetch($udom,$uname,$pid,\$response);
6028: $result .= ':'.$response;
6029: &Reply($client, &escape($result)."\n",$userinput);
1.320 albertel 6030: return 1;
1.317 raeburn 6031: }
6032: ®ister_handler("autophotocheck",\&photo_check_handler,0,1,0);
6033:
6034: #
6035: # Retrieve information from localenroll about whether to provide a button
6036: # for users who have enbled import of student photos to initiate an
6037: # update of photo files for registered students. Also include
6038: # comment to display alongside button.
6039:
6040: sub photo_choice_handler {
6041: my ($cmd, $tail, $client) = @_;
6042: my $userinput = "$cmd:$tail";
6043: my $cdom = &unescape($tail);
1.320 albertel 6044: my ($update,$comment);
6045: eval {
6046: local($SIG{__DIE__})='DEFAULT';
6047: ($update,$comment) = &localenroll::manager_photo_update($cdom);
6048: };
6049: if (!$@) {
6050: &Reply($client,&escape($update).':'.&escape($comment)."\n",$userinput);
6051: } else {
6052: &Failure($client,"unknown_cmd\n",$userinput);
6053: }
6054: return 1;
1.317 raeburn 6055: }
6056: ®ister_handler("autophotochoice",\&photo_choice_handler,0,1,0);
6057:
1.265 albertel 6058: #
6059: # Gets a student's photo to exist (in the correct image type) in the user's
6060: # directory.
6061: # Formal Parameters:
6062: # $cmd - The command request that got us dispatched.
6063: # $tail - A colon separated set of words that will be split into:
6064: # $domain - student's domain
6065: # $uname - student username
6066: # $type - image type desired
6067: # $client - The socket open on the client.
6068: # Returns:
6069: # 1 - continue processing.
1.317 raeburn 6070:
1.265 albertel 6071: sub student_photo_handler {
6072: my ($cmd, $tail, $client) = @_;
1.317 raeburn 6073: my ($domain,$uname,$ext,$type) = split(/:/, $tail);
1.265 albertel 6074:
1.317 raeburn 6075: my $path=&propath($domain,$uname). '/userfiles/internal/';
6076: my $filename = 'studentphoto.'.$ext;
6077: if ($type eq 'thumbnail') {
6078: $filename = 'studentphoto_tn.'.$ext;
6079: }
6080: if (-e $path.$filename) {
1.265 albertel 6081: &Reply($client,"ok\n","$cmd:$tail");
6082: return 1;
6083: }
6084: &mkpath($path);
1.317 raeburn 6085: my $file;
6086: if ($type eq 'thumbnail') {
1.320 albertel 6087: eval {
6088: local($SIG{__DIE__})='DEFAULT';
6089: $file=&localstudentphoto::fetch_thumbnail($domain,$uname);
6090: };
1.317 raeburn 6091: } else {
6092: $file=&localstudentphoto::fetch($domain,$uname);
6093: }
1.265 albertel 6094: if (!$file) {
6095: &Failure($client,"unavailable\n","$cmd:$tail");
6096: return 1;
6097: }
1.317 raeburn 6098: if (!-e $path.$filename) { &convert_photo($file,$path.$filename); }
6099: if (-e $path.$filename) {
1.265 albertel 6100: &Reply($client,"ok\n","$cmd:$tail");
6101: return 1;
6102: }
6103: &Failure($client,"unable_to_convert\n","$cmd:$tail");
6104: return 1;
6105: }
6106: ®ister_handler("studentphoto", \&student_photo_handler, 0, 1, 0);
1.246 foxr 6107:
1.361 raeburn 6108: sub inst_usertypes_handler {
6109: my ($cmd, $domain, $client) = @_;
6110: my $res;
6111: my $userinput = $cmd.":".$domain; # For logging purposes.
1.370 albertel 6112: my (%typeshash,@order,$result);
6113: eval {
6114: local($SIG{__DIE__})='DEFAULT';
6115: $result=&localenroll::inst_usertypes($domain,\%typeshash,\@order);
6116: };
6117: if ($result eq 'ok') {
1.361 raeburn 6118: if (keys(%typeshash) > 0) {
6119: foreach my $key (keys(%typeshash)) {
6120: $res.=&escape($key).'='.&escape($typeshash{$key}).'&';
6121: }
6122: }
6123: $res=~s/\&$//;
6124: $res .= ':';
6125: if (@order > 0) {
6126: foreach my $item (@order) {
6127: $res .= &escape($item).'&';
6128: }
6129: }
6130: $res=~s/\&$//;
6131: }
1.387 albertel 6132: &Reply($client, \$res, $userinput);
1.361 raeburn 6133: return 1;
6134: }
6135: ®ister_handler("inst_usertypes", \&inst_usertypes_handler, 0, 1, 0);
6136:
1.264 albertel 6137: # mkpath makes all directories for a file, expects an absolute path with a
6138: # file or a trailing / if just a dir is passed
6139: # returns 1 on success 0 on failure
6140: sub mkpath {
6141: my ($file)=@_;
6142: my @parts=split(/\//,$file,-1);
6143: my $now=$parts[0].'/'.$parts[1].'/'.$parts[2];
6144: for (my $i=3;$i<= ($#parts-1);$i++) {
1.265 albertel 6145: $now.='/'.$parts[$i];
1.264 albertel 6146: if (!-e $now) {
6147: if (!mkdir($now,0770)) { return 0; }
6148: }
6149: }
6150: return 1;
6151: }
6152:
1.207 foxr 6153: #---------------------------------------------------------------
6154: #
6155: # Getting, decoding and dispatching requests:
6156: #
6157: #
6158: # Get a Request:
6159: # Gets a Request message from the client. The transaction
6160: # is defined as a 'line' of text. We remove the new line
6161: # from the text line.
1.226 foxr 6162: #
1.211 albertel 6163: sub get_request {
1.207 foxr 6164: my $input = <$client>;
6165: chomp($input);
1.226 foxr 6166:
1.234 foxr 6167: &Debug("get_request: Request = $input\n");
1.207 foxr 6168:
6169: &status('Processing '.$clientname.':'.$input);
6170:
6171: return $input;
6172: }
1.212 foxr 6173: #---------------------------------------------------------------
6174: #
6175: # Process a request. This sub should shrink as each action
6176: # gets farmed out into a separat sub that is registered
6177: # with the dispatch hash.
6178: #
6179: # Parameters:
6180: # user_input - The request received from the client (lonc).
6181: # Returns:
6182: # true to keep processing, false if caller should exit.
6183: #
6184: sub process_request {
6185: my ($userinput) = @_; # Easier for now to break style than to
6186: # fix all the userinput -> user_input.
6187: my $wasenc = 0; # True if request was encrypted.
6188: # ------------------------------------------------------------ See if encrypted
1.322 albertel 6189: # for command
6190: # sethost:<server>
6191: # <command>:<args>
6192: # we just send it to the processor
6193: # for
6194: # sethost:<server>:<command>:<args>
6195: # we do the implict set host and then do the command
6196: if ($userinput =~ /^sethost:/) {
6197: (my $cmd,my $newid,$userinput) = split(':',$userinput,3);
6198: if (defined($userinput)) {
6199: &sethost("$cmd:$newid");
6200: } else {
6201: $userinput = "$cmd:$newid";
6202: }
6203: }
6204:
1.212 foxr 6205: if ($userinput =~ /^enc/) {
6206: $userinput = decipher($userinput);
6207: $wasenc=1;
6208: if(!$userinput) { # Cipher not defined.
1.251 foxr 6209: &Failure($client, "error: Encrypted data without negotated key\n");
1.212 foxr 6210: return 0;
6211: }
6212: }
6213: Debug("process_request: $userinput\n");
6214:
1.213 foxr 6215: #
6216: # The 'correct way' to add a command to lond is now to
6217: # write a sub to execute it and Add it to the command dispatch
6218: # hash via a call to register_handler.. The comments to that
6219: # sub should give you enough to go on to show how to do this
6220: # along with the examples that are building up as this code
6221: # is getting refactored. Until all branches of the
6222: # if/elseif monster below have been factored out into
6223: # separate procesor subs, if the dispatch hash is missing
6224: # the command keyword, we will fall through to the remainder
6225: # of the if/else chain below in order to keep this thing in
6226: # working order throughout the transmogrification.
6227:
6228: my ($command, $tail) = split(/:/, $userinput, 2);
6229: chomp($command);
6230: chomp($tail);
6231: $tail =~ s/(\r)//; # This helps people debugging with e.g. telnet.
1.214 foxr 6232: $command =~ s/(\r)//; # And this too for parameterless commands.
6233: if(!$tail) {
6234: $tail =""; # defined but blank.
6235: }
1.213 foxr 6236:
6237: &Debug("Command received: $command, encoded = $wasenc");
6238:
6239: if(defined $Dispatcher{$command}) {
6240:
6241: my $dispatch_info = $Dispatcher{$command};
6242: my $handler = $$dispatch_info[0];
6243: my $need_encode = $$dispatch_info[1];
6244: my $client_types = $$dispatch_info[2];
6245: Debug("Matched dispatch hash: mustencode: $need_encode "
6246: ."ClientType $client_types");
6247:
6248: # Validate the request:
6249:
6250: my $ok = 1;
6251: my $requesterprivs = 0;
6252: if(&isClient()) {
6253: $requesterprivs |= $CLIENT_OK;
6254: }
6255: if(&isManager()) {
6256: $requesterprivs |= $MANAGER_OK;
6257: }
6258: if($need_encode && (!$wasenc)) {
6259: Debug("Must encode but wasn't: $need_encode $wasenc");
6260: $ok = 0;
6261: }
6262: if(($client_types & $requesterprivs) == 0) {
6263: Debug("Client not privileged to do this operation");
6264: $ok = 0;
6265: }
6266:
6267: if($ok) {
6268: Debug("Dispatching to handler $command $tail");
6269: my $keep_going = &$handler($command, $tail, $client);
6270: return $keep_going;
6271: } else {
6272: Debug("Refusing to dispatch because client did not match requirements");
6273: Failure($client, "refused\n", $userinput);
6274: return 1;
6275: }
6276:
6277: }
6278:
1.262 foxr 6279: print $client "unknown_cmd\n";
1.212 foxr 6280: # -------------------------------------------------------------------- complete
6281: Debug("process_request - returning 1");
6282: return 1;
6283: }
1.207 foxr 6284: #
6285: # Decipher encoded traffic
6286: # Parameters:
6287: # input - Encoded data.
6288: # Returns:
6289: # Decoded data or undef if encryption key was not yet negotiated.
6290: # Implicit input:
6291: # cipher - This global holds the negotiated encryption key.
6292: #
1.211 albertel 6293: sub decipher {
1.207 foxr 6294: my ($input) = @_;
6295: my $output = '';
1.212 foxr 6296:
6297:
1.207 foxr 6298: if($cipher) {
6299: my($enc, $enclength, $encinput) = split(/:/, $input);
6300: for(my $encidx = 0; $encidx < length($encinput); $encidx += 16) {
6301: $output .=
6302: $cipher->decrypt(pack("H16", substr($encinput, $encidx, 16)));
6303: }
6304: return substr($output, 0, $enclength);
6305: } else {
6306: return undef;
6307: }
6308: }
6309:
6310: #
6311: # Register a command processor. This function is invoked to register a sub
6312: # to process a request. Once registered, the ProcessRequest sub can automatically
6313: # dispatch requests to an appropriate sub, and do the top level validity checking
6314: # as well:
6315: # - Is the keyword recognized.
6316: # - Is the proper client type attempting the request.
6317: # - Is the request encrypted if it has to be.
6318: # Parameters:
6319: # $request_name - Name of the request being registered.
6320: # This is the command request that will match
6321: # against the hash keywords to lookup the information
6322: # associated with the dispatch information.
6323: # $procedure - Reference to a sub to call to process the request.
6324: # All subs get called as follows:
6325: # Procedure($cmd, $tail, $replyfd, $key)
6326: # $cmd - the actual keyword that invoked us.
6327: # $tail - the tail of the request that invoked us.
6328: # $replyfd- File descriptor connected to the client
6329: # $must_encode - True if the request must be encoded to be good.
6330: # $client_ok - True if it's ok for a client to request this.
6331: # $manager_ok - True if it's ok for a manager to request this.
6332: # Side effects:
6333: # - On success, the Dispatcher hash has an entry added for the key $RequestName
6334: # - On failure, the program will die as it's a bad internal bug to try to
6335: # register a duplicate command handler.
6336: #
1.211 albertel 6337: sub register_handler {
1.212 foxr 6338: my ($request_name,$procedure,$must_encode, $client_ok,$manager_ok) = @_;
1.207 foxr 6339:
6340: # Don't allow duplication#
6341:
6342: if (defined $Dispatcher{$request_name}) {
6343: die "Attempting to define a duplicate request handler for $request_name\n";
6344: }
6345: # Build the client type mask:
6346:
6347: my $client_type_mask = 0;
6348: if($client_ok) {
6349: $client_type_mask |= $CLIENT_OK;
6350: }
6351: if($manager_ok) {
6352: $client_type_mask |= $MANAGER_OK;
6353: }
6354:
6355: # Enter the hash:
6356:
6357: my @entry = ($procedure, $must_encode, $client_type_mask);
6358:
6359: $Dispatcher{$request_name} = \@entry;
6360:
6361: }
6362:
6363:
6364: #------------------------------------------------------------------
6365:
6366:
6367:
6368:
1.141 foxr 6369: #
1.96 foxr 6370: # Convert an error return code from lcpasswd to a string value.
6371: #
6372: sub lcpasswdstrerror {
6373: my $ErrorCode = shift;
1.97 foxr 6374: if(($ErrorCode < 0) || ($ErrorCode > $lastpwderror)) {
1.96 foxr 6375: return "lcpasswd Unrecognized error return value ".$ErrorCode;
6376: } else {
1.98 foxr 6377: return $passwderrors[$ErrorCode];
1.96 foxr 6378: }
6379: }
6380:
1.23 harris41 6381: # grabs exception and records it to log before exiting
6382: sub catchexception {
1.27 albertel 6383: my ($error)=@_;
1.25 www 6384: $SIG{'QUIT'}='DEFAULT';
6385: $SIG{__DIE__}='DEFAULT';
1.165 albertel 6386: &status("Catching exception");
1.190 albertel 6387: &logthis("<font color='red'>CRITICAL: "
1.373 albertel 6388: ."ABNORMAL EXIT. Child $$ for server ".$perlvar{'lonHostID'}." died through "
1.27 albertel 6389: ."a crash with this error msg->[$error]</font>");
1.57 www 6390: &logthis('Famous last words: '.$status.' - '.$lastlog);
1.27 albertel 6391: if ($client) { print $client "error: $error\n"; }
1.59 www 6392: $server->close();
1.27 albertel 6393: die($error);
1.23 harris41 6394: }
1.63 www 6395: sub timeout {
1.165 albertel 6396: &status("Handling Timeout");
1.190 albertel 6397: &logthis("<font color='red'>CRITICAL: TIME OUT ".$$."</font>");
1.63 www 6398: &catchexception('Timeout');
6399: }
1.22 harris41 6400: # -------------------------------- Set signal handlers to record abnormal exits
6401:
1.226 foxr 6402:
1.22 harris41 6403: $SIG{'QUIT'}=\&catchexception;
6404: $SIG{__DIE__}=\&catchexception;
6405:
1.81 matthew 6406: # ---------------------------------- Read loncapa_apache.conf and loncapa.conf
1.95 harris41 6407: &status("Read loncapa.conf and loncapa_apache.conf");
6408: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
1.141 foxr 6409: %perlvar=%{$perlvarref};
1.80 harris41 6410: undef $perlvarref;
1.19 www 6411:
1.35 harris41 6412: # ----------------------------- Make sure this process is running from user=www
6413: my $wwwid=getpwnam('www');
6414: if ($wwwid!=$<) {
1.134 albertel 6415: my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
6416: my $subj="LON: $currenthostid User ID mismatch";
1.37 harris41 6417: system("echo 'User ID mismatch. lond must be run as user www.' |\
1.35 harris41 6418: mailto $emailto -s '$subj' > /dev/null");
6419: exit 1;
6420: }
6421:
1.19 www 6422: # --------------------------------------------- Check if other instance running
6423:
6424: my $pidfile="$perlvar{'lonDaemons'}/logs/lond.pid";
6425:
6426: if (-e $pidfile) {
6427: my $lfh=IO::File->new("$pidfile");
6428: my $pide=<$lfh>;
6429: chomp($pide);
1.29 harris41 6430: if (kill 0 => $pide) { die "already running"; }
1.19 www 6431: }
1.1 albertel 6432:
6433: # ------------------------------------------------------------- Read hosts file
6434:
6435:
6436:
6437: # establish SERVER socket, bind and listen.
6438: $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},
6439: Type => SOCK_STREAM,
6440: Proto => 'tcp',
1.469 foxr 6441: ReuseAddr => 1,
1.1 albertel 6442: Listen => 10 )
1.29 harris41 6443: or die "making socket: $@\n";
1.1 albertel 6444:
6445: # --------------------------------------------------------- Do global variables
6446:
6447: # global variables
6448:
1.134 albertel 6449: my %children = (); # keys are current child process IDs
1.1 albertel 6450:
6451: sub REAPER { # takes care of dead children
6452: $SIG{CHLD} = \&REAPER;
1.165 albertel 6453: &status("Handling child death");
1.178 foxr 6454: my $pid;
6455: do {
6456: $pid = waitpid(-1,&WNOHANG());
6457: if (defined($children{$pid})) {
6458: &logthis("Child $pid died");
6459: delete($children{$pid});
1.183 albertel 6460: } elsif ($pid > 0) {
1.178 foxr 6461: &logthis("Unknown Child $pid died");
6462: }
6463: } while ( $pid > 0 );
6464: foreach my $child (keys(%children)) {
6465: $pid = waitpid($child,&WNOHANG());
6466: if ($pid > 0) {
6467: &logthis("Child $child - $pid looks like we missed it's death");
6468: delete($children{$pid});
6469: }
1.176 albertel 6470: }
1.165 albertel 6471: &status("Finished Handling child death");
1.1 albertel 6472: }
6473:
6474: sub HUNTSMAN { # signal handler for SIGINT
1.165 albertel 6475: &status("Killing children (INT)");
1.1 albertel 6476: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
6477: kill 'INT' => keys %children;
1.59 www 6478: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.1 albertel 6479: my $execdir=$perlvar{'lonDaemons'};
6480: unlink("$execdir/logs/lond.pid");
1.190 albertel 6481: &logthis("<font color='red'>CRITICAL: Shutting down</font>");
1.165 albertel 6482: &status("Done killing children");
1.1 albertel 6483: exit; # clean up with dignity
6484: }
6485:
6486: sub HUPSMAN { # signal handler for SIGHUP
6487: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
1.165 albertel 6488: &status("Killing children for restart (HUP)");
1.1 albertel 6489: kill 'INT' => keys %children;
1.59 www 6490: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.190 albertel 6491: &logthis("<font color='red'>CRITICAL: Restarting</font>");
1.134 albertel 6492: my $execdir=$perlvar{'lonDaemons'};
1.30 harris41 6493: unlink("$execdir/logs/lond.pid");
1.165 albertel 6494: &status("Restarting self (HUP)");
1.1 albertel 6495: exec("$execdir/lond"); # here we go again
6496: }
6497:
1.144 foxr 6498: #
1.148 foxr 6499: # Reload the Apache daemon's state.
1.150 foxr 6500: # This is done by invoking /home/httpd/perl/apachereload
6501: # a setuid perl script that can be root for us to do this job.
1.148 foxr 6502: #
6503: sub ReloadApache {
1.473 raeburn 6504: # --------------------------- Handle case of another apachereload process (locking)
1.474 raeburn 6505: if (&LONCAPA::try_to_lock('/tmp/lock_apachereload')) {
6506: my $execdir = $perlvar{'lonDaemons'};
6507: my $script = $execdir."/apachereload";
6508: system($script);
6509: unlink('/tmp/lock_apachereload'); # Remove the lock file.
6510: }
1.148 foxr 6511: }
6512:
6513: #
1.144 foxr 6514: # Called in response to a USR2 signal.
6515: # - Reread hosts.tab
6516: # - All children connected to hosts that were removed from hosts.tab
6517: # are killed via SIGINT
6518: # - All children connected to previously existing hosts are sent SIGUSR1
6519: # - Our internal hosts hash is updated to reflect the new contents of
6520: # hosts.tab causing connections from hosts added to hosts.tab to
6521: # now be honored.
6522: #
6523: sub UpdateHosts {
1.165 albertel 6524: &status("Reload hosts.tab");
1.147 foxr 6525: logthis('<font color="blue"> Updating connections </font>');
1.148 foxr 6526: #
6527: # The %children hash has the set of IP's we currently have children
6528: # on. These need to be matched against records in the hosts.tab
6529: # Any ip's no longer in the table get killed off they correspond to
6530: # either dropped or changed hosts. Note that the re-read of the table
6531: # will take care of new and changed hosts as connections come into being.
6532:
1.371 albertel 6533: &Apache::lonnet::reset_hosts_info();
1.148 foxr 6534:
1.368 albertel 6535: foreach my $child (keys(%children)) {
1.148 foxr 6536: my $childip = $children{$child};
1.374 albertel 6537: if ($childip ne '127.0.0.1'
6538: && !defined(&Apache::lonnet::get_hosts_from_ip($childip))) {
1.149 foxr 6539: logthis('<font color="blue"> UpdateHosts killing child '
6540: ." $child for ip $childip </font>");
1.148 foxr 6541: kill('INT', $child);
1.149 foxr 6542: } else {
6543: logthis('<font color="green"> keeping child for ip '
6544: ." $childip (pid=$child) </font>");
1.148 foxr 6545: }
6546: }
6547: ReloadApache;
1.165 albertel 6548: &status("Finished reloading hosts.tab");
1.144 foxr 6549: }
6550:
1.148 foxr 6551:
1.57 www 6552: sub checkchildren {
1.165 albertel 6553: &status("Checking on the children (sending signals)");
1.57 www 6554: &initnewstatus();
6555: &logstatus();
6556: &logthis('Going to check on the children');
1.134 albertel 6557: my $docdir=$perlvar{'lonDocRoot'};
1.61 harris41 6558: foreach (sort keys %children) {
1.221 albertel 6559: #sleep 1;
1.57 www 6560: unless (kill 'USR1' => $_) {
6561: &logthis ('Child '.$_.' is dead');
6562: &logstatus($$.' is dead');
1.221 albertel 6563: delete($children{$_});
1.57 www 6564: }
1.61 harris41 6565: }
1.63 www 6566: sleep 5;
1.212 foxr 6567: $SIG{ALRM} = sub { Debug("timeout");
6568: die "timeout"; };
1.113 albertel 6569: $SIG{__DIE__} = 'DEFAULT';
1.165 albertel 6570: &status("Checking on the children (waiting for reports)");
1.63 www 6571: foreach (sort keys %children) {
6572: unless (-e "$docdir/lon-status/londchld/$_.txt") {
1.113 albertel 6573: eval {
6574: alarm(300);
1.63 www 6575: &logthis('Child '.$_.' did not respond');
1.67 albertel 6576: kill 9 => $_;
1.131 albertel 6577: #$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
6578: #$subj="LON: $currenthostid killed lond process $_";
6579: #my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null`;
6580: #$execdir=$perlvar{'lonDaemons'};
6581: #$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_`;
1.221 albertel 6582: delete($children{$_});
1.113 albertel 6583: alarm(0);
6584: }
1.63 www 6585: }
6586: }
1.113 albertel 6587: $SIG{ALRM} = 'DEFAULT';
1.155 albertel 6588: $SIG{__DIE__} = \&catchexception;
1.165 albertel 6589: &status("Finished checking children");
1.221 albertel 6590: &logthis('Finished Checking children');
1.57 www 6591: }
6592:
1.1 albertel 6593: # --------------------------------------------------------------------- Logging
6594:
6595: sub logthis {
6596: my $message=shift;
6597: my $execdir=$perlvar{'lonDaemons'};
6598: my $fh=IO::File->new(">>$execdir/logs/lond.log");
6599: my $now=time;
6600: my $local=localtime($now);
1.58 www 6601: $lastlog=$local.': '.$message;
1.1 albertel 6602: print $fh "$local ($$): $message\n";
6603: }
6604:
1.77 foxr 6605: # ------------------------- Conditional log if $DEBUG true.
6606: sub Debug {
6607: my $message = shift;
6608: if($DEBUG) {
6609: &logthis($message);
6610: }
6611: }
1.161 foxr 6612:
6613: #
6614: # Sub to do replies to client.. this gives a hook for some
6615: # debug tracing too:
6616: # Parameters:
6617: # fd - File open on client.
6618: # reply - Text to send to client.
6619: # request - Original request from client.
6620: #
1.490 droeschl 6621: #NOTE $reply must be terminated by exactly *one* \n. If $reply is a reference
6622: #this is done automatically ($$reply must not contain any \n in this case).
6623: #If $reply is a string the caller has to ensure this.
1.161 foxr 6624: sub Reply {
1.192 foxr 6625: my ($fd, $reply, $request) = @_;
1.387 albertel 6626: if (ref($reply)) {
6627: print $fd $$reply;
6628: print $fd "\n";
6629: if ($DEBUG) { Debug("Request was $request Reply was $$reply"); }
6630: } else {
6631: print $fd $reply;
6632: if ($DEBUG) { Debug("Request was $request Reply was $reply"); }
6633: }
1.212 foxr 6634: $Transactions++;
6635: }
6636:
6637:
6638: #
6639: # Sub to report a failure.
6640: # This function:
6641: # - Increments the failure statistic counters.
6642: # - Invokes Reply to send the error message to the client.
6643: # Parameters:
6644: # fd - File descriptor open on the client
6645: # reply - Reply text to emit.
6646: # request - The original request message (used by Reply
6647: # to debug if that's enabled.
6648: # Implicit outputs:
6649: # $Failures- The number of failures is incremented.
6650: # Reply (invoked here) sends a message to the
6651: # client:
6652: #
6653: sub Failure {
6654: my $fd = shift;
6655: my $reply = shift;
6656: my $request = shift;
6657:
6658: $Failures++;
6659: Reply($fd, $reply, $request); # That's simple eh?
1.161 foxr 6660: }
1.57 www 6661: # ------------------------------------------------------------------ Log status
6662:
6663: sub logstatus {
1.178 foxr 6664: &status("Doing logging");
6665: my $docdir=$perlvar{'lonDocRoot'};
6666: {
6667: my $fh=IO::File->new(">$docdir/lon-status/londchld/$$.txt");
1.200 matthew 6668: print $fh $status."\n".$lastlog."\n".time."\n$keymode";
1.178 foxr 6669: $fh->close();
6670: }
1.221 albertel 6671: &status("Finished $$.txt");
6672: {
6673: open(LOG,">>$docdir/lon-status/londstatus.txt");
6674: flock(LOG,LOCK_EX);
6675: print LOG $$."\t".$clientname."\t".$currenthostid."\t"
6676: .$status."\t".$lastlog."\t $keymode\n";
1.275 albertel 6677: flock(LOG,LOCK_UN);
1.221 albertel 6678: close(LOG);
6679: }
1.178 foxr 6680: &status("Finished logging");
1.57 www 6681: }
6682:
6683: sub initnewstatus {
6684: my $docdir=$perlvar{'lonDocRoot'};
6685: my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt");
1.460 foxr 6686: my $now=time();
1.57 www 6687: my $local=localtime($now);
6688: print $fh "LOND status $local - parent $$\n\n";
1.64 www 6689: opendir(DIR,"$docdir/lon-status/londchld");
1.134 albertel 6690: while (my $filename=readdir(DIR)) {
1.64 www 6691: unlink("$docdir/lon-status/londchld/$filename");
6692: }
6693: closedir(DIR);
1.57 www 6694: }
6695:
6696: # -------------------------------------------------------------- Status setting
6697:
6698: sub status {
6699: my $what=shift;
6700: my $now=time;
6701: my $local=localtime($now);
1.178 foxr 6702: $status=$local.': '.$what;
6703: $0='lond: '.$what.' '.$local;
1.57 www 6704: }
1.11 www 6705:
1.13 www 6706: # -------------------------------------------------------------- Talk to lonsql
6707:
1.234 foxr 6708: sub sql_reply {
1.12 harris41 6709: my ($cmd)=@_;
1.234 foxr 6710: my $answer=&sub_sql_reply($cmd);
6711: if ($answer eq 'con_lost') { $answer=&sub_sql_reply($cmd); }
1.12 harris41 6712: return $answer;
6713: }
6714:
1.234 foxr 6715: sub sub_sql_reply {
1.12 harris41 6716: my ($cmd)=@_;
6717: my $unixsock="mysqlsock";
6718: my $peerfile="$perlvar{'lonSockDir'}/$unixsock";
6719: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
6720: Type => SOCK_STREAM,
6721: Timeout => 10)
6722: or return "con_lost";
1.319 www 6723: print $sclient "$cmd:$currentdomainid\n";
1.12 harris41 6724: my $answer=<$sclient>;
6725: chomp($answer);
6726: if (!$answer) { $answer="con_lost"; }
6727: return $answer;
6728: }
6729:
1.1 albertel 6730: # --------------------------------------- Is this the home server of an author?
1.11 www 6731:
1.1 albertel 6732: sub ishome {
6733: my $author=shift;
6734: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
6735: my ($udom,$uname)=split(/\//,$author);
6736: my $proname=propath($udom,$uname);
6737: if (-e $proname) {
6738: return 'owner';
6739: } else {
6740: return 'not_owner';
6741: }
6742: }
6743:
6744: # ======================================================= Continue main program
6745: # ---------------------------------------------------- Fork once and dissociate
6746:
1.134 albertel 6747: my $fpid=fork;
1.1 albertel 6748: exit if $fpid;
1.29 harris41 6749: die "Couldn't fork: $!" unless defined ($fpid);
1.1 albertel 6750:
1.29 harris41 6751: POSIX::setsid() or die "Can't start new session: $!";
1.1 albertel 6752:
6753: # ------------------------------------------------------- Write our PID on disk
6754:
1.134 albertel 6755: my $execdir=$perlvar{'lonDaemons'};
1.1 albertel 6756: open (PIDSAVE,">$execdir/logs/lond.pid");
6757: print PIDSAVE "$$\n";
6758: close(PIDSAVE);
1.190 albertel 6759: &logthis("<font color='red'>CRITICAL: ---------- Starting ----------</font>");
1.57 www 6760: &status('Starting');
1.1 albertel 6761:
1.106 foxr 6762:
1.1 albertel 6763:
6764: # ----------------------------------------------------- Install signal handlers
6765:
1.57 www 6766:
1.1 albertel 6767: $SIG{CHLD} = \&REAPER;
6768: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
6769: $SIG{HUP} = \&HUPSMAN;
1.57 www 6770: $SIG{USR1} = \&checkchildren;
1.144 foxr 6771: $SIG{USR2} = \&UpdateHosts;
1.106 foxr 6772:
1.148 foxr 6773: # Read the host hashes:
1.368 albertel 6774: &Apache::lonnet::load_hosts_tab();
1.447 raeburn 6775: my %iphost = &Apache::lonnet::get_iphost(1);
1.106 foxr 6776:
1.480 raeburn 6777: $dist=`$perlvar{'lonDaemons'}/distprobe`;
1.286 albertel 6778:
1.471 raeburn 6779: my $arch = `uname -i`;
1.475 raeburn 6780: chomp($arch);
1.471 raeburn 6781: if ($arch eq 'unknown') {
6782: $arch = `uname -m`;
1.475 raeburn 6783: chomp($arch);
1.471 raeburn 6784: }
6785:
1.106 foxr 6786: # --------------------------------------------------------------
6787: # Accept connections. When a connection comes in, it is validated
6788: # and if good, a child process is created to process transactions
6789: # along the connection.
6790:
1.1 albertel 6791: while (1) {
1.165 albertel 6792: &status('Starting accept');
1.106 foxr 6793: $client = $server->accept() or next;
1.165 albertel 6794: &status('Accepted '.$client.' off to spawn');
1.386 albertel 6795: make_new_child($client);
1.165 albertel 6796: &status('Finished spawning');
1.1 albertel 6797: }
6798:
1.212 foxr 6799: sub make_new_child {
6800: my $pid;
6801: # my $cipher; # Now global
6802: my $sigset;
1.178 foxr 6803:
1.212 foxr 6804: $client = shift;
6805: &status('Starting new child '.$client);
6806: &logthis('<font color="green"> Attempting to start child ('.$client.
6807: ")</font>");
6808: # block signal for fork
6809: $sigset = POSIX::SigSet->new(SIGINT);
6810: sigprocmask(SIG_BLOCK, $sigset)
6811: or die "Can't block SIGINT for fork: $!\n";
1.178 foxr 6812:
1.212 foxr 6813: die "fork: $!" unless defined ($pid = fork);
1.178 foxr 6814:
1.212 foxr 6815: $client->sockopt(SO_KEEPALIVE, 1); # Enable monitoring of
6816: # connection liveness.
1.178 foxr 6817:
1.212 foxr 6818: #
6819: # Figure out who we're talking to so we can record the peer in
6820: # the pid hash.
6821: #
6822: my $caller = getpeername($client);
6823: my ($port,$iaddr);
6824: if (defined($caller) && length($caller) > 0) {
6825: ($port,$iaddr)=unpack_sockaddr_in($caller);
6826: } else {
6827: &logthis("Unable to determine who caller was, getpeername returned nothing");
6828: }
6829: if (defined($iaddr)) {
6830: $clientip = inet_ntoa($iaddr);
6831: Debug("Connected with $clientip");
6832: } else {
6833: &logthis("Unable to determine clientip");
6834: $clientip='Unavailable';
6835: }
6836:
6837: if ($pid) {
6838: # Parent records the child's birth and returns.
6839: sigprocmask(SIG_UNBLOCK, $sigset)
6840: or die "Can't unblock SIGINT for fork: $!\n";
6841: $children{$pid} = $clientip;
6842: &status('Started child '.$pid);
1.462 foxr 6843: close($client);
1.212 foxr 6844: return;
6845: } else {
6846: # Child can *not* return from this subroutine.
6847: $SIG{INT} = 'DEFAULT'; # make SIGINT kill us as it did before
6848: $SIG{CHLD} = 'DEFAULT'; #make this default so that pwauth returns
6849: #don't get intercepted
6850: $SIG{USR1}= \&logstatus;
6851: $SIG{ALRM}= \&timeout;
1.468 foxr 6852: #
6853: # Block sigpipe as it gets thrownon socket disconnect and we want to
6854: # deal with that as a read faiure instead.
6855: #
6856: my $blockset = POSIX::SigSet->new(SIGPIPE);
6857: sigprocmask(SIG_BLOCK, $blockset);
6858:
1.212 foxr 6859: $lastlog='Forked ';
6860: $status='Forked';
1.178 foxr 6861:
1.212 foxr 6862: # unblock signals
6863: sigprocmask(SIG_UNBLOCK, $sigset)
6864: or die "Can't unblock SIGINT for fork: $!\n";
1.178 foxr 6865:
1.212 foxr 6866: # my $tmpsnum=0; # Now global
6867: #---------------------------------------------------- kerberos 5 initialization
6868: &Authen::Krb5::init_context();
1.511 raeburn 6869:
6870: my $no_ets;
1.514 raeburn 6871: if ($dist =~ /^(?:centos|rhes|scientific)(\d+)$/) {
1.511 raeburn 6872: if ($1 >= 7) {
6873: $no_ets = 1;
6874: }
6875: } elsif ($dist =~ /^suse(\d+\.\d+)$/) {
6876: if (($1 eq '9.3') || ($1 >= 12.2)) {
6877: $no_ets = 1;
6878: }
1.514 raeburn 6879: } elsif ($dist =~ /^sles(\d+)$/) {
6880: if ($1 > 11) {
6881: $no_ets = 1;
6882: }
1.511 raeburn 6883: } elsif ($dist =~ /^fedora(\d+)$/) {
6884: if ($1 < 7) {
6885: $no_ets = 1;
6886: }
6887: }
6888: unless ($no_ets) {
1.286 albertel 6889: &Authen::Krb5::init_ets();
6890: }
1.209 albertel 6891:
1.212 foxr 6892: &status('Accepted connection');
6893: # =============================================================================
6894: # do something with the connection
6895: # -----------------------------------------------------------------------------
6896: # see if we know client and 'check' for spoof IP by ineffective challenge
1.178 foxr 6897:
1.278 albertel 6898: my $outsideip=$clientip;
6899: if ($clientip eq '127.0.0.1') {
1.368 albertel 6900: $outsideip=&Apache::lonnet::get_host_ip($perlvar{'lonHostID'});
1.278 albertel 6901: }
1.412 foxr 6902: &ReadManagerTable();
1.368 albertel 6903: my $clientrec=defined(&Apache::lonnet::get_hosts_from_ip($outsideip));
1.278 albertel 6904: my $ismanager=($managers{$outsideip} ne undef);
1.432 raeburn 6905: $clientname = "[unknown]";
1.212 foxr 6906: if($clientrec) { # Establish client type.
6907: $ConnectionType = "client";
1.368 albertel 6908: $clientname = (&Apache::lonnet::get_hosts_from_ip($outsideip))[-1];
1.212 foxr 6909: if($ismanager) {
6910: $ConnectionType = "both";
6911: }
6912: } else {
6913: $ConnectionType = "manager";
1.278 albertel 6914: $clientname = $managers{$outsideip};
1.212 foxr 6915: }
6916: my $clientok;
1.178 foxr 6917:
1.212 foxr 6918: if ($clientrec || $ismanager) {
6919: &status("Waiting for init from $clientip $clientname");
6920: &logthis('<font color="yellow">INFO: Connection, '.
6921: $clientip.
6922: " ($clientname) connection type = $ConnectionType </font>" );
6923: &status("Connecting $clientip ($clientname))");
6924: my $remotereq=<$client>;
6925: chomp($remotereq);
6926: Debug("Got init: $remotereq");
1.337 albertel 6927:
1.212 foxr 6928: if ($remotereq =~ /^init/) {
6929: &sethost("sethost:$perlvar{'lonHostID'}");
6930: #
6931: # If the remote is attempting a local init... give that a try:
6932: #
1.432 raeburn 6933: (my $i, my $inittype, $clientversion) = split(/:/, $remotereq);
1.492 droeschl 6934: # For LON-CAPA 2.9, the client session will have sent its LON-CAPA
6935: # version when initiating the connection. For LON-CAPA 2.8 and older,
6936: # the version is retrieved from the global %loncaparevs in lonnet.pm.
1.494 droeschl 6937: # $clientversion contains path to keyfile if $inittype eq 'local'
6938: # it's overridden below in this case
1.492 droeschl 6939: $clientversion ||= $Apache::lonnet::loncaparevs{$clientname};
1.209 albertel 6940:
1.212 foxr 6941: # If the connection type is ssl, but I didn't get my
6942: # certificate files yet, then I'll drop back to
6943: # insecure (if allowed).
6944:
6945: if($inittype eq "ssl") {
6946: my ($ca, $cert) = lonssl::CertificateFile;
6947: my $kfile = lonssl::KeyFile;
6948: if((!$ca) ||
6949: (!$cert) ||
6950: (!$kfile)) {
6951: $inittype = ""; # This forces insecure attempt.
6952: &logthis("<font color=\"blue\"> Certificates not "
6953: ."installed -- trying insecure auth</font>");
1.224 foxr 6954: } else { # SSL certificates are in place so
1.212 foxr 6955: } # Leave the inittype alone.
6956: }
6957:
6958: if($inittype eq "local") {
1.432 raeburn 6959: $clientversion = $perlvar{'lonVersion'};
1.212 foxr 6960: my $key = LocalConnection($client, $remotereq);
6961: if($key) {
6962: Debug("Got local key $key");
6963: $clientok = 1;
6964: my $cipherkey = pack("H32", $key);
6965: $cipher = new IDEA($cipherkey);
6966: print $client "ok:local\n";
1.442 www 6967: &logthis('<font color="green">'
1.212 foxr 6968: . "Successful local authentication </font>");
6969: $keymode = "local"
1.178 foxr 6970: } else {
1.212 foxr 6971: Debug("Failed to get local key");
6972: $clientok = 0;
6973: shutdown($client, 3);
6974: close $client;
1.178 foxr 6975: }
1.212 foxr 6976: } elsif ($inittype eq "ssl") {
6977: my $key = SSLConnection($client);
6978: if ($key) {
6979: $clientok = 1;
6980: my $cipherkey = pack("H32", $key);
6981: $cipher = new IDEA($cipherkey);
6982: &logthis('<font color="green">'
6983: ."Successfull ssl authentication with $clientname </font>");
6984: $keymode = "ssl";
6985:
1.178 foxr 6986: } else {
1.212 foxr 6987: $clientok = 0;
6988: close $client;
1.178 foxr 6989: }
1.212 foxr 6990:
6991: } else {
6992: my $ok = InsecureConnection($client);
6993: if($ok) {
6994: $clientok = 1;
6995: &logthis('<font color="green">'
6996: ."Successful insecure authentication with $clientname </font>");
6997: print $client "ok\n";
6998: $keymode = "insecure";
1.178 foxr 6999: } else {
1.212 foxr 7000: &logthis('<font color="yellow">'
7001: ."Attempted insecure connection disallowed </font>");
7002: close $client;
7003: $clientok = 0;
1.178 foxr 7004:
7005: }
7006: }
1.212 foxr 7007: } else {
7008: &logthis(
7009: "<font color='blue'>WARNING: "
7010: ."$clientip failed to initialize: >$remotereq< </font>");
7011: &status('No init '.$clientip);
7012: }
7013:
7014: } else {
7015: &logthis(
7016: "<font color='blue'>WARNING: Unknown client $clientip</font>");
7017: &status('Hung up on '.$clientip);
7018: }
7019:
7020: if ($clientok) {
7021: # ---------------- New known client connecting, could mean machine online again
1.368 albertel 7022: if (&Apache::lonnet::get_host_ip($currenthostid) ne $clientip
1.367 albertel 7023: && $clientip ne '127.0.0.1') {
1.375 albertel 7024: &Apache::lonnet::reconlonc($clientname);
1.212 foxr 7025: }
7026: &logthis("<font color='green'>Established connection: $clientname</font>");
7027: &status('Will listen to '.$clientname);
7028: # ------------------------------------------------------------ Process requests
7029: my $keep_going = 1;
7030: my $user_input;
1.448 raeburn 7031: my $clienthost = &Apache::lonnet::hostname($clientname);
7032: my $clientserverhomeID = &Apache::lonnet::get_server_homeID($clienthost);
7033: $clienthomedom = &Apache::lonnet::host_domain($clientserverhomeID);
1.212 foxr 7034: while(($user_input = get_request) && $keep_going) {
7035: alarm(120);
7036: Debug("Main: Got $user_input\n");
7037: $keep_going = &process_request($user_input);
1.178 foxr 7038: alarm(0);
1.212 foxr 7039: &status('Listening to '.$clientname." ($keymode)");
1.161 foxr 7040: }
1.212 foxr 7041:
1.59 www 7042: # --------------------------------------------- client unknown or fishy, refuse
1.212 foxr 7043: } else {
1.161 foxr 7044: print $client "refused\n";
7045: $client->close();
1.190 albertel 7046: &logthis("<font color='blue'>WARNING: "
1.161 foxr 7047: ."Rejected client $clientip, closing connection</font>");
7048: }
1.212 foxr 7049: }
1.161 foxr 7050:
1.1 albertel 7051: # =============================================================================
1.161 foxr 7052:
1.190 albertel 7053: &logthis("<font color='red'>CRITICAL: "
1.161 foxr 7054: ."Disconnect from $clientip ($clientname)</font>");
7055:
7056:
7057: # this exit is VERY important, otherwise the child will become
7058: # a producer of more and more children, forking yourself into
7059: # process death.
7060: exit;
1.106 foxr 7061:
1.78 foxr 7062: }
1.261 foxr 7063: #
7064: # Determine if a user is an author for the indicated domain.
7065: #
7066: # Parameters:
7067: # domain - domain to check in .
7068: # user - Name of user to check.
7069: #
7070: # Return:
7071: # 1 - User is an author for domain.
7072: # 0 - User is not an author for domain.
7073: sub is_author {
7074: my ($domain, $user) = @_;
7075:
7076: &Debug("is_author: $user @ $domain");
7077:
7078: my $hashref = &tie_user_hash($domain, $user, "roles",
7079: &GDBM_READER());
7080:
7081: # Author role should show up as a key /domain/_au
1.78 foxr 7082:
1.321 albertel 7083: my $value;
1.487 foxr 7084: if ($hashref) {
1.78 foxr 7085:
1.487 foxr 7086: my $key = "/$domain/_au";
7087: if (defined($hashref)) {
7088: $value = $hashref->{$key};
7089: if(!untie_user_hash($hashref)) {
7090: return 'error: ' . ($!+0)." untie (GDBM) Failed";
7091: }
7092: }
7093:
7094: if(defined($value)) {
7095: &Debug("$user @ $domain is an author");
7096: }
7097: } else {
7098: return 'error: '.($!+0)." tie (GDBM) Failed";
1.261 foxr 7099: }
7100:
7101: return defined($value);
7102: }
1.78 foxr 7103: #
7104: # Checks to see if the input roleput request was to set
1.482 www 7105: # an author role. If so, creates construction space
1.78 foxr 7106: # Parameters:
7107: # request - The request sent to the rolesput subchunk.
7108: # We're looking for /domain/_au
7109: # domain - The domain in which the user is having roles doctored.
7110: # user - Name of the user for which the role is being put.
7111: # authtype - The authentication type associated with the user.
7112: #
1.289 albertel 7113: sub manage_permissions {
1.192 foxr 7114: my ($request, $domain, $user, $authtype) = @_;
1.78 foxr 7115: # See if the request is of the form /$domain/_au
1.289 albertel 7116: if($request =~ /^(\/\Q$domain\E\/_au)$/) { # It's an author rolesput...
1.484 raeburn 7117: my $path=$perlvar{'lonDocRoot'}."/priv/$domain";
1.482 www 7118: unless (-e $path) {
7119: mkdir($path);
7120: }
7121: unless (-e $path.'/'.$user) {
7122: mkdir($path.'/'.$user);
7123: }
1.78 foxr 7124: }
7125: }
1.222 foxr 7126:
7127:
7128: #
7129: # Return the full path of a user password file, whether it exists or not.
7130: # Parameters:
7131: # domain - Domain in which the password file lives.
7132: # user - name of the user.
7133: # Returns:
7134: # Full passwd path:
7135: #
7136: sub password_path {
7137: my ($domain, $user) = @_;
1.264 albertel 7138: return &propath($domain, $user).'/passwd';
1.222 foxr 7139: }
7140:
7141: # Password Filename
7142: # Returns the path to a passwd file given domain and user... only if
7143: # it exists.
7144: # Parameters:
7145: # domain - Domain in which to search.
7146: # user - username.
7147: # Returns:
7148: # - If the password file exists returns its path.
7149: # - If the password file does not exist, returns undefined.
7150: #
7151: sub password_filename {
7152: my ($domain, $user) = @_;
7153:
7154: Debug ("PasswordFilename called: dom = $domain user = $user");
7155:
7156: my $path = &password_path($domain, $user);
7157: Debug("PasswordFilename got path: $path");
7158: if(-e $path) {
7159: return $path;
7160: } else {
7161: return undef;
7162: }
7163: }
7164:
7165: #
7166: # Rewrite the contents of the user's passwd file.
7167: # Parameters:
7168: # domain - domain of the user.
7169: # name - User's name.
7170: # contents - New contents of the file.
7171: # Returns:
7172: # 0 - Failed.
7173: # 1 - Success.
7174: #
7175: sub rewrite_password_file {
7176: my ($domain, $user, $contents) = @_;
7177:
7178: my $file = &password_filename($domain, $user);
7179: if (defined $file) {
7180: my $pf = IO::File->new(">$file");
7181: if($pf) {
7182: print $pf "$contents\n";
7183: return 1;
7184: } else {
7185: return 0;
7186: }
7187: } else {
7188: return 0;
7189: }
7190:
7191: }
7192:
1.78 foxr 7193: #
1.222 foxr 7194: # get_auth_type - Determines the authorization type of a user in a domain.
1.78 foxr 7195:
7196: # Returns the authorization type or nouser if there is no such user.
7197: #
1.436 raeburn 7198: sub get_auth_type {
1.192 foxr 7199: my ($domain, $user) = @_;
1.78 foxr 7200:
1.222 foxr 7201: Debug("get_auth_type( $domain, $user ) \n");
1.78 foxr 7202: my $proname = &propath($domain, $user);
7203: my $passwdfile = "$proname/passwd";
7204: if( -e $passwdfile ) {
7205: my $pf = IO::File->new($passwdfile);
7206: my $realpassword = <$pf>;
7207: chomp($realpassword);
1.79 foxr 7208: Debug("Password info = $realpassword\n");
1.78 foxr 7209: my ($authtype, $contentpwd) = split(/:/, $realpassword);
1.79 foxr 7210: Debug("Authtype = $authtype, content = $contentpwd\n");
1.259 raeburn 7211: return "$authtype:$contentpwd";
1.224 foxr 7212: } else {
1.79 foxr 7213: Debug("Returning nouser");
1.78 foxr 7214: return "nouser";
7215: }
1.1 albertel 7216: }
7217:
1.220 foxr 7218: #
7219: # Validate a user given their domain, name and password. This utility
7220: # function is used by both AuthenticateHandler and ChangePasswordHandler
7221: # to validate the login credentials of a user.
7222: # Parameters:
7223: # $domain - The domain being logged into (this is required due to
7224: # the capability for multihomed systems.
7225: # $user - The name of the user being validated.
7226: # $password - The user's propoposed password.
7227: #
7228: # Returns:
7229: # 1 - The domain,user,pasword triplet corresponds to a valid
7230: # user.
7231: # 0 - The domain,user,password triplet is not a valid user.
7232: #
7233: sub validate_user {
1.396 raeburn 7234: my ($domain, $user, $password, $checkdefauth) = @_;
1.220 foxr 7235:
7236: # Why negative ~pi you may well ask? Well this function is about
7237: # authentication, and therefore very important to get right.
7238: # I've initialized the flag that determines whether or not I've
7239: # validated correctly to a value it's not supposed to get.
7240: # At the end of this function. I'll ensure that it's not still that
7241: # value so we don't just wind up returning some accidental value
7242: # as a result of executing an unforseen code path that
1.249 foxr 7243: # did not set $validated. At the end of valid execution paths,
7244: # validated shoule be 1 for success or 0 for failuer.
1.220 foxr 7245:
7246: my $validated = -3.14159;
7247:
7248: # How we authenticate is determined by the type of authentication
7249: # the user has been assigned. If the authentication type is
7250: # "nouser", the user does not exist so we will return 0.
7251:
1.222 foxr 7252: my $contents = &get_auth_type($domain, $user);
1.220 foxr 7253: my ($howpwd, $contentpwd) = split(/:/, $contents);
7254:
7255: my $null = pack("C",0); # Used by kerberos auth types.
7256:
1.395 raeburn 7257: if ($howpwd eq 'nouser') {
1.396 raeburn 7258: if ($checkdefauth) {
7259: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
7260: if ($domdefaults{'auth_def'} eq 'localauth') {
7261: $howpwd = $domdefaults{'auth_def'};
7262: $contentpwd = $domdefaults{'auth_arg_def'};
7263: } elsif ((($domdefaults{'auth_def'} eq 'krb4') ||
7264: ($domdefaults{'auth_def'} eq 'krb5')) &&
7265: ($domdefaults{'auth_arg_def'} ne '')) {
7266: $howpwd = $domdefaults{'auth_def'};
7267: $contentpwd = $domdefaults{'auth_arg_def'};
7268: }
1.395 raeburn 7269: }
7270: }
1.220 foxr 7271: if ($howpwd ne 'nouser') {
7272: if($howpwd eq "internal") { # Encrypted is in local password file.
1.518 raeburn 7273: if (length($contentpwd) == 13) {
7274: $validated = (crypt($password,$contentpwd) eq $contentpwd);
7275: if ($validated) {
7276: my $ncpass = &hash_passwd($domain,$password);
7277: if (&rewrite_password_file($domain,$user,"$howpwd:$ncpass")) {
7278: &update_passwd_history($user,$domain,$howpwd,'conversion');
7279: &logthis("Validated password hashed with bcrypt for $user:$domain");
7280: }
7281: }
7282: } else {
7283: $validated = &check_internal_passwd($password,$contentpwd,$domain);
7284: }
1.220 foxr 7285: }
7286: elsif ($howpwd eq "unix") { # User is a normal unix user.
7287: $contentpwd = (getpwnam($user))[1];
7288: if($contentpwd) {
7289: if($contentpwd eq 'x') { # Shadow password file...
7290: my $pwauth_path = "/usr/local/sbin/pwauth";
7291: open PWAUTH, "|$pwauth_path" or
7292: die "Cannot invoke authentication";
7293: print PWAUTH "$user\n$password\n";
7294: close PWAUTH;
7295: $validated = ! $?;
7296:
7297: } else { # Passwords in /etc/passwd.
7298: $validated = (crypt($password,
7299: $contentpwd) eq $contentpwd);
7300: }
7301: } else {
7302: $validated = 0;
7303: }
1.439 raeburn 7304: } elsif ($howpwd eq "krb4") { # user is in kerberos 4 auth. domain.
7305: my $checkwithkrb5 = 0;
7306: if ($dist =~/^fedora(\d+)$/) {
7307: if ($1 > 11) {
7308: $checkwithkrb5 = 1;
7309: }
7310: } elsif ($dist =~ /^suse([\d.]+)$/) {
7311: if ($1 > 11.1) {
7312: $checkwithkrb5 = 1;
7313: }
7314: }
7315: if ($checkwithkrb5) {
7316: $validated = &krb5_authen($password,$null,$user,$contentpwd);
7317: } else {
7318: $validated = &krb4_authen($password,$null,$user,$contentpwd);
7319: }
1.224 foxr 7320: } elsif ($howpwd eq "krb5") { # User is in kerberos 5 auth. domain.
1.439 raeburn 7321: $validated = &krb5_authen($password,$null,$user,$contentpwd);
1.224 foxr 7322: } elsif ($howpwd eq "localauth") {
1.220 foxr 7323: # Authenticate via installation specific authentcation method:
7324: $validated = &localauth::localauth($user,
7325: $password,
1.353 albertel 7326: $contentpwd,
7327: $domain);
1.358 albertel 7328: if ($validated < 0) {
1.357 albertel 7329: &logthis("localauth for $contentpwd $user:$domain returned a $validated");
7330: $validated = 0;
7331: }
1.224 foxr 7332: } else { # Unrecognized auth is also bad.
1.220 foxr 7333: $validated = 0;
7334: }
7335: } else {
7336: $validated = 0;
7337: }
7338: #
7339: # $validated has the correct stat of the authentication:
7340: #
7341:
7342: unless ($validated != -3.14159) {
1.249 foxr 7343: # I >really really< want to know if this happens.
7344: # since it indicates that user authentication is badly
7345: # broken in some code path.
7346: #
7347: die "ValidateUser - failed to set the value of validated $domain, $user $password";
1.220 foxr 7348: }
7349: return $validated;
7350: }
7351:
1.518 raeburn 7352: sub check_internal_passwd {
7353: my ($plainpass,$stored,$domain) = @_;
7354: my (undef,$method,@rest) = split(/!/,$stored);
7355: if ($method eq "bcrypt") {
7356: my $result = &hash_passwd($domain,$plainpass,@rest);
7357: if ($result ne $stored) {
7358: return 0;
7359: }
7360: # Upgrade to a larger number of rounds if necessary
7361: my $defaultcost;
7362: my %domconfig =
7363: &Apache::lonnet::get_dom('configuration',['password'],$domain);
7364: if (ref($domconfig{'password'}) eq 'HASH') {
7365: $defaultcost = $domconfig{'password'}{'cost'};
7366: }
7367: if (($defaultcost eq '') || ($defaultcost =~ /D/)) {
7368: $defaultcost = 10;
7369: }
7370: return 1 unless($rest[0]<$defaultcost);
7371: }
7372: return 0;
7373: }
7374:
7375: sub get_last_authchg {
7376: my ($domain,$user) = @_;
7377: my $lastmod;
7378: my $logname = &propath($domain,$user).'/passwd.log';
7379: if (-e "$logname") {
7380: $lastmod = (stat("$logname"))[9];
7381: }
7382: return $lastmod;
7383: }
7384:
1.439 raeburn 7385: sub krb4_authen {
7386: my ($password,$null,$user,$contentpwd) = @_;
7387: my $validated = 0;
7388: if (!($password =~ /$null/) ) { # Null password not allowed.
7389: eval {
7390: require Authen::Krb4;
7391: };
7392: if (!$@) {
7393: my $k4error = &Authen::Krb4::get_pw_in_tkt($user,
7394: "",
7395: $contentpwd,,
7396: 'krbtgt',
7397: $contentpwd,
7398: 1,
7399: $password);
7400: if(!$k4error) {
7401: $validated = 1;
7402: } else {
7403: $validated = 0;
7404: &logthis('krb4: '.$user.', '.$contentpwd.', '.
7405: &Authen::Krb4::get_err_txt($Authen::Krb4::error));
7406: }
7407: } else {
7408: $validated = krb5_authen($password,$null,$user,$contentpwd);
7409: }
7410: }
7411: return $validated;
7412: }
7413:
7414: sub krb5_authen {
7415: my ($password,$null,$user,$contentpwd) = @_;
7416: my $validated = 0;
7417: if(!($password =~ /$null/)) { # Null password not allowed.
7418: my $krbclient = &Authen::Krb5::parse_name($user.'@'
7419: .$contentpwd);
7420: my $krbservice = "krbtgt/".$contentpwd."\@".$contentpwd;
7421: my $krbserver = &Authen::Krb5::parse_name($krbservice);
7422: my $credentials= &Authen::Krb5::cc_default();
7423: $credentials->initialize(&Authen::Krb5::parse_name($user.'@'
7424: .$contentpwd));
7425: my $krbreturn;
7426: if (exists(&Authen::Krb5::get_init_creds_password)) {
7427: $krbreturn =
7428: &Authen::Krb5::get_init_creds_password($krbclient,$password,
7429: $krbservice);
7430: $validated = (ref($krbreturn) eq 'Authen::Krb5::Creds');
7431: } else {
7432: $krbreturn =
7433: &Authen::Krb5::get_in_tkt_with_password($krbclient,$krbserver,
7434: $password,$credentials);
7435: $validated = ($krbreturn == 1);
7436: }
7437: if (!$validated) {
7438: &logthis('krb5: '.$user.', '.$contentpwd.', '.
7439: &Authen::Krb5::error());
7440: }
7441: }
7442: return $validated;
7443: }
1.220 foxr 7444:
1.84 albertel 7445: sub addline {
7446: my ($fname,$hostid,$ip,$newline)=@_;
7447: my $contents;
7448: my $found=0;
1.355 albertel 7449: my $expr='^'.quotemeta($hostid).':'.quotemeta($ip).':';
1.134 albertel 7450: my $sh;
1.84 albertel 7451: if ($sh=IO::File->new("$fname.subscription")) {
7452: while (my $subline=<$sh>) {
7453: if ($subline !~ /$expr/) {$contents.= $subline;} else {$found=1;}
7454: }
7455: $sh->close();
7456: }
7457: $sh=IO::File->new(">$fname.subscription");
7458: if ($contents) { print $sh $contents; }
7459: if ($newline) { print $sh $newline; }
7460: $sh->close();
7461: return $found;
1.86 www 7462: }
7463:
1.234 foxr 7464: sub get_chat {
1.324 raeburn 7465: my ($cdom,$cname,$udom,$uname,$group)=@_;
1.310 albertel 7466:
1.87 www 7467: my @entries=();
1.324 raeburn 7468: my $namespace = 'nohist_chatroom';
7469: my $namespace_inroom = 'nohist_inchatroom';
1.335 albertel 7470: if ($group ne '') {
1.324 raeburn 7471: $namespace .= '_'.$group;
7472: $namespace_inroom .= '_'.$group;
7473: }
7474: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 7475: &GDBM_READER());
7476: if ($hashref) {
7477: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.311 albertel 7478: &untie_user_hash($hashref);
1.123 www 7479: }
1.124 www 7480: my @participants=();
1.134 albertel 7481: my $cutoff=time-60;
1.324 raeburn 7482: $hashref = &tie_user_hash($cdom, $cname, $namespace_inroom,
1.310 albertel 7483: &GDBM_WRCREAT());
7484: if ($hashref) {
7485: $hashref->{$uname.':'.$udom}=time;
7486: foreach my $user (sort(keys(%$hashref))) {
7487: if ($hashref->{$user}>$cutoff) {
7488: push(@participants, 'active_participant:'.$user);
1.123 www 7489: }
7490: }
1.311 albertel 7491: &untie_user_hash($hashref);
1.86 www 7492: }
1.124 www 7493: return (@participants,@entries);
1.86 www 7494: }
7495:
1.234 foxr 7496: sub chat_add {
1.324 raeburn 7497: my ($cdom,$cname,$newchat,$group)=@_;
1.88 albertel 7498: my @entries=();
1.142 www 7499: my $time=time;
1.324 raeburn 7500: my $namespace = 'nohist_chatroom';
7501: my $logfile = 'chatroom.log';
1.335 albertel 7502: if ($group ne '') {
1.324 raeburn 7503: $namespace .= '_'.$group;
7504: $logfile = 'chatroom_'.$group.'.log';
7505: }
7506: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 7507: &GDBM_WRCREAT());
7508: if ($hashref) {
7509: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.88 albertel 7510: my ($lastid)=($entries[$#entries]=~/^(\w+)\:/);
7511: my ($thentime,$idnum)=split(/\_/,$lastid);
7512: my $newid=$time.'_000000';
7513: if ($thentime==$time) {
7514: $idnum=~s/^0+//;
7515: $idnum++;
7516: $idnum=substr('000000'.$idnum,-6,6);
7517: $newid=$time.'_'.$idnum;
7518: }
1.310 albertel 7519: $hashref->{$newid}=$newchat;
1.88 albertel 7520: my $expired=$time-3600;
1.310 albertel 7521: foreach my $comment (keys(%$hashref)) {
7522: my ($thistime) = ($comment=~/(\d+)\_/);
1.88 albertel 7523: if ($thistime<$expired) {
1.310 albertel 7524: delete $hashref->{$comment};
1.88 albertel 7525: }
7526: }
1.310 albertel 7527: {
7528: my $proname=&propath($cdom,$cname);
1.324 raeburn 7529: if (open(CHATLOG,">>$proname/$logfile")) {
1.310 albertel 7530: print CHATLOG ("$time:".&unescape($newchat)."\n");
7531: }
7532: close(CHATLOG);
1.142 www 7533: }
1.311 albertel 7534: &untie_user_hash($hashref);
1.86 www 7535: }
1.84 albertel 7536: }
7537:
7538: sub unsub {
7539: my ($fname,$clientip)=@_;
7540: my $result;
1.188 foxr 7541: my $unsubs = 0; # Number of successful unsubscribes:
7542:
7543:
7544: # An old way subscriptions were handled was to have a
7545: # subscription marker file:
7546:
7547: Debug("Attempting unlink of $fname.$clientname");
1.161 foxr 7548: if (unlink("$fname.$clientname")) {
1.188 foxr 7549: $unsubs++; # Successful unsub via marker file.
7550: }
7551:
7552: # The more modern way to do it is to have a subscription list
7553: # file:
7554:
1.84 albertel 7555: if (-e "$fname.subscription") {
1.161 foxr 7556: my $found=&addline($fname,$clientname,$clientip,'');
1.188 foxr 7557: if ($found) {
7558: $unsubs++;
7559: }
7560: }
7561:
7562: # If either or both of these mechanisms succeeded in unsubscribing a
7563: # resource we can return ok:
7564:
7565: if($unsubs) {
7566: $result = "ok\n";
1.84 albertel 7567: } else {
1.188 foxr 7568: $result = "not_subscribed\n";
1.84 albertel 7569: }
1.188 foxr 7570:
1.84 albertel 7571: return $result;
7572: }
7573:
1.101 www 7574: sub currentversion {
7575: my $fname=shift;
7576: my $version=-1;
7577: my $ulsdir='';
7578: if ($fname=~/^(.+)\/[^\/]+$/) {
7579: $ulsdir=$1;
7580: }
1.114 albertel 7581: my ($fnamere1,$fnamere2);
7582: # remove version if already specified
1.101 www 7583: $fname=~s/\.\d+\.(\w+(?:\.meta)*)$/\.$1/;
1.114 albertel 7584: # get the bits that go before and after the version number
7585: if ( $fname=~/^(.*\.)(\w+(?:\.meta)*)$/ ) {
7586: $fnamere1=$1;
7587: $fnamere2='.'.$2;
7588: }
1.101 www 7589: if (-e $fname) { $version=1; }
7590: if (-e $ulsdir) {
1.134 albertel 7591: if(-d $ulsdir) {
7592: if (opendir(LSDIR,$ulsdir)) {
7593: my $ulsfn;
7594: while ($ulsfn=readdir(LSDIR)) {
1.101 www 7595: # see if this is a regular file (ignore links produced earlier)
1.134 albertel 7596: my $thisfile=$ulsdir.'/'.$ulsfn;
7597: unless (-l $thisfile) {
1.160 www 7598: if ($thisfile=~/\Q$fnamere1\E(\d+)\Q$fnamere2\E$/) {
1.134 albertel 7599: if ($1>$version) { $version=$1; }
7600: }
7601: }
7602: }
7603: closedir(LSDIR);
7604: $version++;
7605: }
7606: }
7607: }
7608: return $version;
1.101 www 7609: }
7610:
7611: sub thisversion {
7612: my $fname=shift;
7613: my $version=-1;
7614: if ($fname=~/\.(\d+)\.\w+(?:\.meta)*$/) {
7615: $version=$1;
7616: }
7617: return $version;
7618: }
7619:
1.84 albertel 7620: sub subscribe {
7621: my ($userinput,$clientip)=@_;
7622: my $result;
1.293 albertel 7623: my ($cmd,$fname)=split(/:/,$userinput,2);
1.84 albertel 7624: my $ownership=&ishome($fname);
7625: if ($ownership eq 'owner') {
1.101 www 7626: # explitly asking for the current version?
7627: unless (-e $fname) {
7628: my $currentversion=¤tversion($fname);
7629: if (&thisversion($fname)==$currentversion) {
7630: if ($fname=~/^(.+)\.\d+\.(\w+(?:\.meta)*)$/) {
7631: my $root=$1;
7632: my $extension=$2;
7633: symlink($root.'.'.$extension,
7634: $root.'.'.$currentversion.'.'.$extension);
1.102 www 7635: unless ($extension=~/\.meta$/) {
7636: symlink($root.'.'.$extension.'.meta',
7637: $root.'.'.$currentversion.'.'.$extension.'.meta');
7638: }
1.101 www 7639: }
7640: }
7641: }
1.84 albertel 7642: if (-e $fname) {
7643: if (-d $fname) {
7644: $result="directory\n";
7645: } else {
1.161 foxr 7646: if (-e "$fname.$clientname") {&unsub($fname,$clientip);}
1.134 albertel 7647: my $now=time;
1.161 foxr 7648: my $found=&addline($fname,$clientname,$clientip,
7649: "$clientname:$clientip:$now\n");
1.84 albertel 7650: if ($found) { $result="$fname\n"; }
7651: # if they were subscribed to only meta data, delete that
7652: # subscription, when you subscribe to a file you also get
7653: # the metadata
7654: unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); }
7655: $fname=~s/\/home\/httpd\/html\/res/raw/;
1.476 raeburn 7656: my $protocol = $Apache::lonnet::protocol{$perlvar{'lonHostID'}};
7657: $protocol = 'http' if ($protocol ne 'https');
7658: $fname=$protocol.'://'.&Apache::lonnet::hostname($perlvar{'lonHostID'})."/".$fname;
1.84 albertel 7659: $result="$fname\n";
7660: }
7661: } else {
7662: $result="not_found\n";
7663: }
7664: } else {
7665: $result="rejected\n";
7666: }
7667: return $result;
7668: }
1.287 foxr 7669: # Change the passwd of a unix user. The caller must have
7670: # first verified that the user is a loncapa user.
7671: #
7672: # Parameters:
7673: # user - Unix user name to change.
7674: # pass - New password for the user.
7675: # Returns:
7676: # ok - if success
7677: # other - Some meaningfule error message string.
7678: # NOTE:
7679: # invokes a setuid script to change the passwd.
7680: sub change_unix_password {
7681: my ($user, $pass) = @_;
7682:
7683: &Debug("change_unix_password");
7684: my $execdir=$perlvar{'lonDaemons'};
7685: &Debug("Opening lcpasswd pipeline");
7686: my $pf = IO::File->new("|$execdir/lcpasswd > "
7687: ."$perlvar{'lonDaemons'}"
7688: ."/logs/lcpasswd.log");
7689: print $pf "$user\n$pass\n$pass\n";
7690: close $pf;
7691: my $err = $?;
7692: return ($err < @passwderrors) ? $passwderrors[$err] :
7693: "pwchange_falure - unknown error";
7694:
7695:
7696: }
7697:
1.91 albertel 7698:
7699: sub make_passwd_file {
1.518 raeburn 7700: my ($uname,$udom,$umode,$npass,$passfilename,$action)=@_;
1.390 raeburn 7701: my $result="ok";
1.91 albertel 7702: if ($umode eq 'krb4' or $umode eq 'krb5') {
7703: {
7704: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7705: if ($pf) {
7706: print $pf "$umode:$npass\n";
1.518 raeburn 7707: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 7708: } else {
7709: $result = "pass_file_failed_error";
7710: }
1.91 albertel 7711: }
7712: } elsif ($umode eq 'internal') {
1.518 raeburn 7713: my $ncpass = &hash_passwd($udom,$npass);
1.91 albertel 7714: {
7715: &Debug("Creating internal auth");
7716: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7717: if($pf) {
1.518 raeburn 7718: print $pf "internal:$ncpass\n";
7719: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 7720: } else {
7721: $result = "pass_file_failed_error";
7722: }
1.91 albertel 7723: }
7724: } elsif ($umode eq 'localauth') {
7725: {
7726: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7727: if($pf) {
7728: print $pf "localauth:$npass\n";
1.524 ! raeburn 7729: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 7730: } else {
7731: $result = "pass_file_failed_error";
7732: }
1.91 albertel 7733: }
7734: } elsif ($umode eq 'unix') {
1.502 raeburn 7735: &logthis(">>>Attempt to create unix account blocked -- unix auth not available for new users.");
7736: $result="no_new_unix_accounts";
1.91 albertel 7737: } elsif ($umode eq 'none') {
7738: {
1.223 foxr 7739: my $pf = IO::File->new("> $passfilename");
1.261 foxr 7740: if($pf) {
7741: print $pf "none:\n";
7742: } else {
7743: $result = "pass_file_failed_error";
7744: }
1.91 albertel 7745: }
7746: } else {
1.390 raeburn 7747: $result="auth_mode_error";
1.91 albertel 7748: }
7749: return $result;
1.121 albertel 7750: }
7751:
1.265 albertel 7752: sub convert_photo {
7753: my ($start,$dest)=@_;
7754: system("convert $start $dest");
7755: }
7756:
1.121 albertel 7757: sub sethost {
7758: my ($remotereq) = @_;
7759: my (undef,$hostid)=split(/:/,$remotereq);
1.322 albertel 7760: # ignore sethost if we are already correct
7761: if ($hostid eq $currenthostid) {
7762: return 'ok';
7763: }
7764:
1.121 albertel 7765: if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; }
1.368 albertel 7766: if (&Apache::lonnet::get_host_ip($perlvar{'lonHostID'})
7767: eq &Apache::lonnet::get_host_ip($hostid)) {
1.200 matthew 7768: $currenthostid =$hostid;
1.369 albertel 7769: $currentdomainid=&Apache::lonnet::host_domain($hostid);
1.443 www 7770: # &logthis("Setting hostid to $hostid, and domain to $currentdomainid");
1.121 albertel 7771: } else {
7772: &logthis("Requested host id $hostid not an alias of ".
7773: $perlvar{'lonHostID'}." refusing connection");
7774: return 'unable_to_set';
7775: }
7776: return 'ok';
7777: }
7778:
7779: sub version {
7780: my ($userinput)=@_;
7781: $remoteVERSION=(split(/:/,$userinput))[1];
7782: return "version:$VERSION";
1.127 albertel 7783: }
1.178 foxr 7784:
1.447 raeburn 7785: sub get_usersession_config {
7786: my ($dom,$name) = @_;
7787: my ($usersessionconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
7788: if (defined($cached)) {
7789: return $usersessionconf;
7790: } else {
7791: my %domconfig = &Apache::lonnet::get_dom('configuration',['usersessions'],$dom);
7792: if (ref($domconfig{'usersessions'}) eq 'HASH') {
7793: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'usersessions'},3600);
7794: return $domconfig{'usersessions'};
7795: }
7796: }
7797: return;
7798: }
1.200 matthew 7799:
1.453 raeburn 7800:
7801:
1.450 raeburn 7802:
1.471 raeburn 7803: sub distro_and_arch {
7804: return $dist.':'.$arch;
7805: }
7806:
1.61 harris41 7807: # ----------------------------------- POD (plain old documentation, CPAN style)
7808:
7809: =head1 NAME
7810:
7811: lond - "LON Daemon" Server (port "LOND" 5663)
7812:
7813: =head1 SYNOPSIS
7814:
1.74 harris41 7815: Usage: B<lond>
7816:
7817: Should only be run as user=www. This is a command-line script which
7818: is invoked by B<loncron>. There is no expectation that a typical user
7819: will manually start B<lond> from the command-line. (In other words,
7820: DO NOT START B<lond> YOURSELF.)
1.61 harris41 7821:
7822: =head1 DESCRIPTION
7823:
1.74 harris41 7824: There are two characteristics associated with the running of B<lond>,
7825: PROCESS MANAGEMENT (starting, stopping, handling child processes)
7826: and SERVER-SIDE ACTIVITIES (password authentication, user creation,
7827: subscriptions, etc). These are described in two large
7828: sections below.
7829:
7830: B<PROCESS MANAGEMENT>
7831:
1.61 harris41 7832: Preforker - server who forks first. Runs as a daemon. HUPs.
7833: Uses IDEA encryption
7834:
1.74 harris41 7835: B<lond> forks off children processes that correspond to the other servers
7836: in the network. Management of these processes can be done at the
7837: parent process level or the child process level.
7838:
7839: B<logs/lond.log> is the location of log messages.
7840:
7841: The process management is now explained in terms of linux shell commands,
7842: subroutines internal to this code, and signal assignments:
7843:
7844: =over 4
7845:
7846: =item *
7847:
7848: PID is stored in B<logs/lond.pid>
7849:
7850: This is the process id number of the parent B<lond> process.
7851:
7852: =item *
7853:
7854: SIGTERM and SIGINT
7855:
7856: Parent signal assignment:
7857: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
7858:
7859: Child signal assignment:
7860: $SIG{INT} = 'DEFAULT'; (and SIGTERM is DEFAULT also)
7861: (The child dies and a SIGALRM is sent to parent, awaking parent from slumber
7862: to restart a new child.)
7863:
7864: Command-line invocations:
7865: B<kill> B<-s> SIGTERM I<PID>
7866: B<kill> B<-s> SIGINT I<PID>
7867:
7868: Subroutine B<HUNTSMAN>:
7869: This is only invoked for the B<lond> parent I<PID>.
7870: This kills all the children, and then the parent.
7871: The B<lonc.pid> file is cleared.
7872:
7873: =item *
7874:
7875: SIGHUP
7876:
7877: Current bug:
7878: This signal can only be processed the first time
7879: on the parent process. Subsequent SIGHUP signals
7880: have no effect.
7881:
7882: Parent signal assignment:
7883: $SIG{HUP} = \&HUPSMAN;
7884:
7885: Child signal assignment:
7886: none (nothing happens)
7887:
7888: Command-line invocations:
7889: B<kill> B<-s> SIGHUP I<PID>
7890:
7891: Subroutine B<HUPSMAN>:
7892: This is only invoked for the B<lond> parent I<PID>,
7893: This kills all the children, and then the parent.
7894: The B<lond.pid> file is cleared.
7895:
7896: =item *
7897:
7898: SIGUSR1
7899:
7900: Parent signal assignment:
7901: $SIG{USR1} = \&USRMAN;
7902:
7903: Child signal assignment:
7904: $SIG{USR1}= \&logstatus;
7905:
7906: Command-line invocations:
7907: B<kill> B<-s> SIGUSR1 I<PID>
7908:
7909: Subroutine B<USRMAN>:
7910: When invoked for the B<lond> parent I<PID>,
7911: SIGUSR1 is sent to all the children, and the status of
7912: each connection is logged.
1.144 foxr 7913:
7914: =item *
7915:
7916: SIGUSR2
7917:
7918: Parent Signal assignment:
7919: $SIG{USR2} = \&UpdateHosts
7920:
7921: Child signal assignment:
7922: NONE
7923:
1.74 harris41 7924:
7925: =item *
7926:
7927: SIGCHLD
7928:
7929: Parent signal assignment:
7930: $SIG{CHLD} = \&REAPER;
7931:
7932: Child signal assignment:
7933: none
7934:
7935: Command-line invocations:
7936: B<kill> B<-s> SIGCHLD I<PID>
7937:
7938: Subroutine B<REAPER>:
7939: This is only invoked for the B<lond> parent I<PID>.
7940: Information pertaining to the child is removed.
7941: The socket port is cleaned up.
7942:
7943: =back
7944:
7945: B<SERVER-SIDE ACTIVITIES>
7946:
7947: Server-side information can be accepted in an encrypted or non-encrypted
7948: method.
7949:
7950: =over 4
7951:
7952: =item ping
7953:
7954: Query a client in the hosts.tab table; "Are you there?"
7955:
7956: =item pong
7957:
7958: Respond to a ping query.
7959:
7960: =item ekey
7961:
7962: Read in encrypted key, make cipher. Respond with a buildkey.
7963:
7964: =item load
7965:
7966: Respond with CPU load based on a computation upon /proc/loadavg.
7967:
7968: =item currentauth
7969:
7970: Reply with current authentication information (only over an
7971: encrypted channel).
7972:
7973: =item auth
7974:
7975: Only over an encrypted channel, reply as to whether a user's
7976: authentication information can be validated.
7977:
7978: =item passwd
7979:
7980: Allow for a password to be set.
7981:
7982: =item makeuser
7983:
7984: Make a user.
7985:
1.517 raeburn 7986: =item changeuserauth
1.74 harris41 7987:
7988: Allow for authentication mechanism and password to be changed.
7989:
7990: =item home
1.61 harris41 7991:
1.74 harris41 7992: Respond to a question "are you the home for a given user?"
7993:
7994: =item update
7995:
7996: Update contents of a subscribed resource.
7997:
7998: =item unsubscribe
7999:
8000: The server is unsubscribing from a resource.
8001:
8002: =item subscribe
8003:
8004: The server is subscribing to a resource.
8005:
8006: =item log
8007:
8008: Place in B<logs/lond.log>
8009:
8010: =item put
8011:
8012: stores hash in namespace
8013:
1.496 raeburn 8014: =item rolesput
1.74 harris41 8015:
8016: put a role into a user's environment
8017:
8018: =item get
8019:
8020: returns hash with keys from array
8021: reference filled in from namespace
8022:
8023: =item eget
8024:
8025: returns hash with keys from array
8026: reference filled in from namesp (encrypts the return communication)
8027:
8028: =item rolesget
8029:
8030: get a role from a user's environment
8031:
8032: =item del
8033:
8034: deletes keys out of array from namespace
8035:
8036: =item keys
8037:
8038: returns namespace keys
8039:
8040: =item dump
8041:
8042: dumps the complete (or key matching regexp) namespace into a hash
8043:
8044: =item store
8045:
8046: stores hash permanently
8047: for this url; hashref needs to be given and should be a \%hashname; the
8048: remaining args aren't required and if they aren't passed or are '' they will
8049: be derived from the ENV
8050:
8051: =item restore
8052:
8053: returns a hash for a given url
8054:
8055: =item querysend
8056:
8057: Tells client about the lonsql process that has been launched in response
8058: to a sent query.
8059:
8060: =item queryreply
8061:
8062: Accept information from lonsql and make appropriate storage in temporary
8063: file space.
8064:
8065: =item idput
8066:
8067: Defines usernames as corresponding to IDs. (These "IDs" are unique identifiers
8068: for each student, defined perhaps by the institutional Registrar.)
8069:
8070: =item idget
8071:
8072: Returns usernames corresponding to IDs. (These "IDs" are unique identifiers
8073: for each student, defined perhaps by the institutional Registrar.)
8074:
1.517 raeburn 8075: =item iddel
8076:
8077: Deletes one or more ids in a domain's id database.
8078:
1.74 harris41 8079: =item tmpput
8080:
8081: Accept and store information in temporary space.
8082:
8083: =item tmpget
8084:
8085: Send along temporarily stored information.
8086:
8087: =item ls
8088:
8089: List part of a user's directory.
8090:
1.135 foxr 8091: =item pushtable
8092:
8093: Pushes a file in /home/httpd/lonTab directory. Currently limited to:
8094: hosts.tab and domain.tab. The old file is copied to *.tab.backup but
8095: must be restored manually in case of a problem with the new table file.
8096: pushtable requires that the request be encrypted and validated via
8097: ValidateManager. The form of the command is:
8098: enc:pushtable tablename <tablecontents> \n
8099: where pushtable, tablename and <tablecontents> will be encrypted, but \n is a
8100: cleartext newline.
8101:
1.74 harris41 8102: =item Hanging up (exit or init)
8103:
8104: What to do when a client tells the server that they (the client)
8105: are leaving the network.
8106:
8107: =item unknown command
8108:
8109: If B<lond> is sent an unknown command (not in the list above),
8110: it replys to the client "unknown_cmd".
1.135 foxr 8111:
1.74 harris41 8112:
8113: =item UNKNOWN CLIENT
8114:
8115: If the anti-spoofing algorithm cannot verify the client,
8116: the client is rejected (with a "refused" message sent
8117: to the client, and the connection is closed.
8118:
8119: =back
1.61 harris41 8120:
8121: =head1 PREREQUISITES
8122:
8123: IO::Socket
8124: IO::File
8125: Apache::File
8126: POSIX
8127: Crypt::IDEA
8128: LWP::UserAgent()
8129: GDBM_File
8130: Authen::Krb4
1.91 albertel 8131: Authen::Krb5
1.61 harris41 8132:
8133: =head1 COREQUISITES
8134:
1.490 droeschl 8135: none
8136:
1.61 harris41 8137: =head1 OSNAMES
8138:
8139: linux
8140:
8141: =head1 SCRIPT CATEGORIES
8142:
8143: Server/Process
8144:
8145: =cut
1.409 foxr 8146:
8147:
8148: =pod
8149:
8150: =head1 LOG MESSAGES
8151:
8152: The messages below can be emitted in the lond log. This log is located
8153: in ~httpd/perl/logs/lond.log Many log messages have HTML encapsulation
8154: to provide coloring if examined from inside a web page. Some do not.
8155: Where color is used, the colors are; Red for sometihhng to get excited
8156: about and to follow up on. Yellow for something to keep an eye on to
8157: be sure it does not get worse, Green,and Blue for informational items.
8158:
8159: In the discussions below, sometimes reference is made to ~httpd
8160: when describing file locations. There isn't really an httpd
8161: user, however there is an httpd directory that gets installed in the
8162: place that user home directories go. On linux, this is usually
8163: (always?) /home/httpd.
8164:
8165:
8166: Some messages are colorless. These are usually (not always)
8167: Green/Blue color level messages.
8168:
8169: =over 2
8170:
8171: =item (Red) LocalConnection rejecting non local: <ip> ne 127.0.0.1
8172:
8173: A local connection negotiation was attempted by
8174: a host whose IP address was not 127.0.0.1.
8175: The socket is closed and the child will exit.
8176: lond has three ways to establish an encyrption
8177: key with a client:
8178:
8179: =over 2
8180:
8181: =item local
8182:
8183: The key is written and read from a file.
8184: This is only valid for connections from localhost.
8185:
8186: =item insecure
8187:
8188: The key is generated by the server and
8189: transmitted to the client.
8190:
8191: =item ssl (secure)
8192:
8193: An ssl connection is negotiated with the client,
8194: the key is generated by the server and sent to the
8195: client across this ssl connection before the
8196: ssl connectionis terminated and clear text
8197: transmission resumes.
8198:
8199: =back
8200:
8201: =item (Red) LocalConnection: caller is insane! init = <init> and type = <type>
8202:
8203: The client is local but has not sent an initialization
8204: string that is the literal "init:local" The connection
8205: is closed and the child exits.
8206:
8207: =item Red CRITICAL Can't get key file <error>
8208:
8209: SSL key negotiation is being attempted but the call to
8210: lonssl::KeyFile failed. This usually means that the
8211: configuration file is not correctly defining or protecting
8212: the directories/files lonCertificateDirectory or
8213: lonnetPrivateKey
8214: <error> is a string that describes the reason that
8215: the key file could not be located.
8216:
8217: =item (Red) CRITICAL Can't get certificates <error>
8218:
8219: SSL key negotiation failed because we were not able to retrives our certificate
8220: or the CA's certificate in the call to lonssl::CertificateFile
8221: <error> is the textual reason this failed. Usual reasons:
8222:
8223: =over 2
1.490 droeschl 8224:
1.409 foxr 8225: =item Apache config file for loncapa incorrect:
1.490 droeschl 8226:
1.409 foxr 8227: one of the variables
8228: lonCertificateDirectory, lonnetCertificateAuthority, or lonnetCertificate
8229: undefined or incorrect
8230:
8231: =item Permission error:
8232:
8233: The directory pointed to by lonCertificateDirectory is not readable by lond
8234:
8235: =item Permission error:
8236:
8237: Files in the directory pointed to by lonCertificateDirectory are not readable by lond.
8238:
8239: =item Installation error:
8240:
8241: Either the certificate authority file or the certificate have not
8242: been installed in lonCertificateDirectory.
8243:
8244: =item (Red) CRITICAL SSL Socket promotion failed: <err>
8245:
8246: The promotion of the connection from plaintext to SSL failed
8247: <err> is the reason for the failure. There are two
8248: system calls involved in the promotion (one of which failed),
8249: a dup to produce
8250: a second fd on the raw socket over which the encrypted data
8251: will flow and IO::SOcket::SSL->new_from_fd which creates
8252: the SSL connection on the duped fd.
8253:
8254: =item (Blue) WARNING client did not respond to challenge
8255:
8256: This occurs on an insecure (non SSL) connection negotiation request.
8257: lond generates some number from the time, the PID and sends it to
8258: the client. The client must respond by echoing this information back.
8259: If the client does not do so, that's a violation of the challenge
8260: protocols and the connection will be failed.
8261:
8262: =item (Red) No manager table. Nobody can manage!!
8263:
8264: lond has the concept of privileged hosts that
8265: can perform remote management function such
8266: as update the hosts.tab. The manager hosts
8267: are described in the
8268: ~httpd/lonTabs/managers.tab file.
8269: this message is logged if this file is missing.
8270:
8271:
8272: =item (Green) Registering manager <dnsname> as <cluster_name> with <ipaddress>
8273:
8274: Reports the successful parse and registration
8275: of a specific manager.
8276:
8277: =item Green existing host <clustername:dnsname>
8278:
8279: The manager host is already defined in the hosts.tab
8280: the information in that table, rather than the info in the
8281: manager table will be used to determine the manager's ip.
8282:
8283: =item (Red) Unable to craete <filename>
8284:
8285: lond has been asked to create new versions of an administrative
8286: file (by a manager). When this is done, the new file is created
8287: in a temp file and then renamed into place so that there are always
8288: usable administrative files, even if the update fails. This failure
8289: message means that the temp file could not be created.
8290: The update is abandoned, and the old file is available for use.
8291:
8292: =item (Green) CopyFile from <oldname> to <newname> failed
8293:
8294: In an update of administrative files, the copy of the existing file to a
8295: backup file failed. The installation of the new file may still succeed,
8296: but there will not be a back up file to rever to (this should probably
8297: be yellow).
8298:
8299: =item (Green) Pushfile: backed up <oldname> to <newname>
8300:
8301: See above, the backup of the old administrative file succeeded.
8302:
8303: =item (Red) Pushfile: Unable to install <filename> <reason>
8304:
8305: The new administrative file could not be installed. In this case,
8306: the old administrative file is still in use.
8307:
8308: =item (Green) Installed new < filename>.
8309:
8310: The new administrative file was successfullly installed.
8311:
8312: =item (Red) Reinitializing lond pid=<pid>
8313:
8314: The lonc child process <pid> will be sent a USR2
8315: signal.
8316:
8317: =item (Red) Reinitializing self
8318:
8319: We've been asked to re-read our administrative files,and
8320: are doing so.
8321:
8322: =item (Yellow) error:Invalid process identifier <ident>
8323:
8324: A reinit command was received, but the target part of the
8325: command was not valid. It must be either
8326: 'lond' or 'lonc' but was <ident>
8327:
8328: =item (Green) isValideditCommand checking: Command = <command> Key = <key> newline = <newline>
8329:
8330: Checking to see if lond has been handed a valid edit
8331: command. It is possible the edit command is not valid
8332: in that case there are no log messages to indicate that.
8333:
8334: =item Result of password change for <username> pwchange_success
8335:
8336: The password for <username> was
8337: successfully changed.
8338:
8339: =item Unable to open <user> passwd to change password
8340:
8341: Could not rewrite the
8342: internal password file for a user
8343:
8344: =item Result of password change for <user> : <result>
1.490 droeschl 8345:
1.409 foxr 8346: A unix password change for <user> was attempted
8347: and the pipe returned <result>
8348:
8349: =item LWP GET: <message> for <fname> (<remoteurl>)
8350:
8351: The lightweight process fetch for a resource failed
8352: with <message> the local filename that should
8353: have existed/been created was <fname> the
8354: corresponding URI: <remoteurl> This is emitted in several
8355: places.
8356:
8357: =item Unable to move <transname> to <destname>
8358:
8359: From fetch_user_file_handler - the user file was replicated but could not
8360: be mv'd to its final location.
8361:
8362: =item Looking for <domain> <username>
8363:
8364: From user_has_session_handler - This should be a Debug call instead
8365: it indicates lond is about to check whether the specified user has a
8366: session active on the specified domain on the local host.
8367:
8368: =item Client <ip> (<name>) hanging up: <input>
8369:
8370: lond has been asked to exit by its client. The <ip> and <name> identify the
8371: client systemand <input> is the full exit command sent to the server.
8372:
8373: =item Red CRITICAL: ABNORMAL EXIT. child <pid> for server <hostname> died through a crass with this error->[<message>].
1.490 droeschl 8374:
1.409 foxr 8375: A lond child terminated. NOte that this termination can also occur when the
8376: child receives the QUIT or DIE signals. <pid> is the process id of the child,
8377: <hostname> the host lond is working for, and <message> the reason the child died
8378: to the best of our ability to get it (I would guess that any numeric value
8379: represents and errno value). This is immediately followed by
8380:
8381: =item Famous last words: Catching exception - <log>
8382:
8383: Where log is some recent information about the state of the child.
8384:
8385: =item Red CRITICAL: TIME OUT <pid>
8386:
8387: Some timeout occured for server <pid>. THis is normally a timeout on an LWP
8388: doing an HTTP::GET.
8389:
8390: =item child <pid> died
8391:
8392: The reaper caught a SIGCHILD for the lond child process <pid>
8393: This should be modified to also display the IP of the dying child
8394: $children{$pid}
8395:
8396: =item Unknown child 0 died
8397: A child died but the wait for it returned a pid of zero which really should not
8398: ever happen.
8399:
8400: =item Child <which> - <pid> looks like we missed it's death
8401:
8402: When a sigchild is received, the reaper process checks all children to see if they are
8403: alive. If children are dying quite quickly, the lack of signal queuing can mean
8404: that a signal hearalds the death of more than one child. If so this message indicates
8405: which other one died. <which> is the ip of a dead child
8406:
8407: =item Free socket: <shutdownretval>
8408:
8409: The HUNTSMAN sub was called due to a SIGINT in a child process. The socket is being shutdown.
8410: for whatever reason, <shutdownretval> is printed but in fact shutdown() is not documented
8411: to return anything. This is followed by:
8412:
8413: =item Red CRITICAL: Shutting down
8414:
8415: Just prior to exit.
8416:
8417: =item Free socket: <shutdownretval>
8418:
8419: The HUPSMAN sub was called due to a SIGHUP. all children get killsed, and lond execs itself.
8420: This is followed by:
8421:
8422: =item (Red) CRITICAL: Restarting
8423:
8424: lond is about to exec itself to restart.
8425:
8426: =item (Blue) Updating connections
8427:
8428: (In response to a USR2). All the children (except the one for localhost)
8429: are about to be killed, the hosts tab reread, and Apache reloaded via apachereload.
8430:
8431: =item (Blue) UpdateHosts killing child <pid> for ip <ip>
8432:
8433: Due to USR2 as above.
8434:
8435: =item (Green) keeping child for ip <ip> (pid = <pid>)
8436:
8437: In response to USR2 as above, the child indicated is not being restarted because
8438: it's assumed that we'll always need a child for the localhost.
8439:
8440:
8441: =item Going to check on the children
8442:
8443: Parent is about to check on the health of the child processes.
8444: Note that this is in response to a USR1 sent to the parent lond.
8445: there may be one or more of the next two messages:
8446:
8447: =item <pid> is dead
8448:
8449: A child that we have in our child hash as alive has evidently died.
8450:
8451: =item Child <pid> did not respond
8452:
8453: In the health check the child <pid> did not update/produce a pid_.txt
8454: file when sent it's USR1 signal. That process is killed with a 9 signal, as it's
8455: assumed to be hung in some un-fixable way.
8456:
8457: =item Finished checking children
1.490 droeschl 8458:
1.409 foxr 8459: Master processs's USR1 processing is cojmplete.
8460:
8461: =item (Red) CRITICAL: ------- Starting ------
8462:
8463: (There are more '-'s on either side). Lond has forked itself off to
8464: form a new session and is about to start actual initialization.
8465:
8466: =item (Green) Attempting to start child (<client>)
8467:
8468: Started a new child process for <client>. Client is IO::Socket object
8469: connected to the child. This was as a result of a TCP/IP connection from a client.
8470:
8471: =item Unable to determine who caller was, getpeername returned nothing
1.490 droeschl 8472:
1.409 foxr 8473: In child process initialization. either getpeername returned undef or
8474: a zero sized object was returned. Processing continues, but in my opinion,
8475: this should be cause for the child to exit.
8476:
8477: =item Unable to determine clientip
8478:
8479: In child process initialization. The peer address from getpeername was not defined.
8480: The client address is stored as "Unavailable" and processing continues.
8481:
8482: =item (Yellow) INFO: Connection <ip> <name> connection type = <type>
1.490 droeschl 8483:
1.409 foxr 8484: In child initialization. A good connectionw as received from <ip>.
8485:
8486: =over 2
8487:
8488: =item <name>
8489:
8490: is the name of the client from hosts.tab.
8491:
8492: =item <type>
8493:
8494: Is the connection type which is either
8495:
8496: =over 2
8497:
8498: =item manager
8499:
8500: The connection is from a manager node, not in hosts.tab
8501:
8502: =item client
8503:
8504: the connection is from a non-manager in the hosts.tab
8505:
8506: =item both
8507:
8508: The connection is from a manager in the hosts.tab.
8509:
8510: =back
8511:
8512: =back
8513:
8514: =item (Blue) Certificates not installed -- trying insecure auth
8515:
8516: One of the certificate file, key file or
8517: certificate authority file could not be found for a client attempting
8518: SSL connection intiation. COnnection will be attemptied in in-secure mode.
8519: (this would be a system with an up to date lond that has not gotten a
8520: certificate from us).
8521:
8522: =item (Green) Successful local authentication
8523:
8524: A local connection successfully negotiated the encryption key.
8525: In this case the IDEA key is in a file (that is hopefully well protected).
8526:
8527: =item (Green) Successful ssl authentication with <client>
8528:
8529: The client (<client> is the peer's name in hosts.tab), has successfully
8530: negotiated an SSL connection with this child process.
8531:
8532: =item (Green) Successful insecure authentication with <client>
1.490 droeschl 8533:
1.409 foxr 8534:
8535: The client has successfully negotiated an insecure connection withthe child process.
8536:
8537: =item (Yellow) Attempted insecure connection disallowed
8538:
8539: The client attempted and failed to successfully negotiate a successful insecure
8540: connection. This can happen either because the variable londAllowInsecure is false
8541: or undefined, or becuse the child did not successfully echo back the challenge
8542: string.
8543:
8544:
8545: =back
8546:
1.441 raeburn 8547: =back
8548:
1.409 foxr 8549:
8550: =cut
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