Annotation of loncom/interface/lonmsg.pm, revision 1.215

1.1       www         1: # The LearningOnline Network with CAPA
1.26      albertel    2: # Routines for messaging
                      3: #
1.215   ! jms         4: # $Id: lonmsg.pm,v 1.214 2008/11/04 04:18:22 raeburn Exp $
1.26      albertel    5: #
                      6: # Copyright Michigan State University Board of Trustees
                      7: #
                      8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
                      9: #
                     10: # LON-CAPA is free software; you can redistribute it and/or modify
                     11: # it under the terms of the GNU General Public License as published by
                     12: # the Free Software Foundation; either version 2 of the License, or
                     13: # (at your option) any later version.
                     14: #
                     15: # LON-CAPA is distributed in the hope that it will be useful,
                     16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
                     17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     18: # GNU General Public License for more details.
                     19: #
                     20: # You should have received a copy of the GNU General Public License
                     21: # along with LON-CAPA; if not, write to the Free Software
                     22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
                     23: #
                     24: # /home/httpd/html/adm/gpl.txt
                     25: #
                     26: # http://www.lon-capa.org/
1.1       www        27: #
1.75      www        28: 
1.1       www        29: package Apache::lonmsg;
                     30: 
1.199     raeburn    31: =pod
                     32: 
                     33: =head1 NAME
                     34: 
                     35: Apache::lonmsg: supports internal messaging
                     36: 
                     37: =head1 SYNOPSIS
                     38: 
                     39: lonmsg provides routines for sending messages.
                     40: 
                     41: Right now, this document will cover just how to send a message, since
                     42: it is likely you will not need to programmatically read messages,
                     43: since lonmsg already implements that functionality.
                     44: 
                     45: The routines used to package messages and unpackage messages are not
                     46: only used by lonmsg when creating/extracting messages for LON-CAPA's
                     47: internal messaging system, but also by lonnotify.pm which is available
                     48: for use by Domain Coordinators to broadcast standard e-mail to specified
                     49: users in their domain.  The XML packaging used in the two cases is very
                     50: similar.  The differences are the use of <recuser>$uname</recuser> and
                     51: <recdomain>$udom</recdomain> in stored internal messages, compared
                     52: with <recipient username="$uname:$udom">$email</recipient> in stored
                     53: Domain Coordinator e-mail for the storage of information about
                     54: recipients of the message/e-mail.
                     55: 
1.215   ! jms        56: =head1 SUBROUTINES
1.199     raeburn    57: 
1.215   ! jms        58: =over
        !            59: 
        !            60: =pod
        !            61: 
        !            62: =item packagemsg()
        !            63: 
        !            64: Package
        !            65: 
        !            66: =item get_course_context()
        !            67: 
        !            68: =item unpackagemsg()
        !            69: 
        !            70: Unpack message into a hash
        !            71: 
        !            72: =item buildmsgid()
        !            73: 
        !            74: Get info out of msgid
        !            75: 
        !            76: =item unpackmsgid()
        !            77: 
        !            78: =item sendemail()
        !            79: 
        !            80: =item sendnotification()
        !            81: 
        !            82: Send notification emails
        !            83: 
        !            84: =item newmail()
        !            85: 
        !            86: Check for email
        !            87: 
        !            88: =item author_res_msg()
        !            89: 
        !            90: Automated message to the author of a resource
        !            91: 
        !            92: =item * B<author_res_msg($filename, $message)>: Sends message $message to the owner
        !            93:     of the resource with the URI $filename.
        !            94: 
        !            95: =item retrieve_author_res_msg()
        !            96: 
        !            97: Retrieve author resource messages
        !            98: 
        !            99: =item del_url_author_res_msg()
        !           100: 
        !           101: Delete all author messages related to one URL
        !           102: 
        !           103: =item clear_author_res_msg()
        !           104: 
        !           105: Clear out all author messages in URL path
        !           106: 
        !           107: =item all_url_author_res_msg()
        !           108: 
        !           109: Return hash with URLs for which there is a resource message
        !           110: 
        !           111: =item store_instructor_comment()
        !           112: 
        !           113: Add a comment to the User Notes screen
        !           114: 
        !           115: =item user_crit_msg_raw()
        !           116: 
        !           117: Critical message to a user
        !           118: 
        !           119: =item user_crit_msg()
        !           120: 
        !           121: New routine that respects "forward" and calls old routine
        !           122: 
        !           123: =item * B<user_crit_msg($user, $domain, $subject, $message, $sendback, $nosentstore,$recipid,$attachmenturl)>: 
        !           124:     Sends a critical message $message to the $user at $domain.  If $sendback
        !           125:     is true,  a receipt will be sent to the current user when $user receives 
        !           126:     the message.
        !           127: 
        !           128:     Additionally it will check if the user has a Forwarding address
        !           129:     set, and send the message to that address instead
        !           130: 
        !           131:     returns 
        !           132:       - in array context a list of results for each message that was sent
        !           133:       - in scalar context a space seperated list of results for each 
        !           134:            message sent
        !           135: 
        !           136: 
        !           137: =item user_crit_received()
        !           138: 
        !           139: Critical message received
        !           140: 
        !           141: =item user_normal_msg_raw()
        !           142: 
        !           143: Normal communication
        !           144: 
        !           145: =item user_normal_msg()
        !           146: 
        !           147: New routine that respects "forward" and calls old routine
        !           148: 
        !           149: =item * B<user_normal_msg($user, $domain, $subject, $message, $citation,
        !           150:        $baseurl, $attachmenturl, $toperm, $sentmessage, $symb, $restitle,
        !           151:        $error,$nosentstore,$recipid)>:
        !           152:  Sends a message to the  $user at $domain, with subject $subject and message $message.
        !           153: 
        !           154:     Additionally it will check if the user has a Forwarding address
        !           155:     set, and send the message to that address instead
        !           156: 
        !           157:     returns
        !           158:       - in array context a list of results for each message that was sent
        !           159:       - in scalar context a space seperated list of results for each
        !           160:            message sent
        !           161: 
        !           162: =item store_sent_mail()
        !           163: 
        !           164: =item store_recipients()
        !           165: 
        !           166: =item foldersuffix()
        !           167: 
        !           168: =item get_user_folders()
        !           169: 
        !           170: User-defined folders 
        !           171: 
        !           172: =item secapply()
        !           173: 
        !           174: =item B<decide_receiver($feedurl,$author,$question,$course,$policy,$defaultflag)>:
        !           175: 
        !           176: Arguments
        !           177:   $feedurl - /res/ url of resource (only need if $author is true)
        !           178:   $author,$question,$course,$policy - all true/false parameters
        !           179:     if true will attempt to find the addresses of user that should receive
        !           180:     this type of feedback (author - feedback to author of resource $feedurl,
        !           181:     $question 'Resource Content Questions', $course 'Course Content Question',
        !           182:     $policy 'Course Policy')
        !           183:     (Additionally it also checks $env for whether the corresponding form.<name>
        !           184:     element exists, for ease of use in a html response context)
        !           185:    
        !           186:   $defaultflag - (internal should be left blank) if true gather addresses 
        !           187:                  that aren't for a section even if I have a section
        !           188:                  (used for reccursion internally, first we look for
        !           189:                  addresses for our specific section then we recurse
        !           190:                  and look for non section addresses)
        !           191: 
        !           192: Returns
        !           193:   $typestyle - string of html text, describing what addresses were found
        !           194:   %to - a hash, which keys are addresses of users to send messages to
        !           195:         the keys will look like   name:domain
        !           196: 
        !           197: =item user_lang()
        !           198: 
        !           199: =back
1.199     raeburn   200: 
                    201: =cut
                    202: 
1.1       www       203: use strict;
1.140     albertel  204: use Apache::lonnet;
1.47      albertel  205: use HTML::TokeParser();
1.180     albertel  206: use Apache::lonlocal;
1.53      www       207: use Mail::Send;
1.187     albertel  208: use LONCAPA qw(:DEFAULT :match);
1.180     albertel  209: 
                    210: {
                    211:     my $uniq;
                    212:     sub get_uniq {
                    213: 	$uniq++;
                    214: 	return $uniq;
                    215:     }
                    216: }
1.65      www       217: 
1.215   ! jms       218: 
1.1       www       219: 
1.3       www       220: sub packagemsg {
1.108     www       221:     my ($subject,$message,$citation,$baseurl,$attachmenturl,
1.202     raeburn   222: 	$recuser,$recdomain,$msgid,$type,$crsmsgid,$symb,$error,$recipid)=@_;
1.96      albertel  223:     $message =&HTML::Entities::encode($message,'<>&"');
                    224:     $citation=&HTML::Entities::encode($citation,'<>&"');
                    225:     $subject =&HTML::Entities::encode($subject,'<>&"');
1.49      albertel  226:     #remove machine specification
                    227:     $baseurl =~ s|^http://[^/]+/|/|;
1.96      albertel  228:     $baseurl =&HTML::Entities::encode($baseurl,'<>&"');
1.51      www       229:     #remove machine specification
                    230:     $attachmenturl =~ s|^http://[^/]+/|/|;
1.96      albertel  231:     $attachmenturl =&HTML::Entities::encode($attachmenturl,'<>&"');
1.201     raeburn   232:     my $course_context = &get_course_context();
1.2       www       233:     my $now=time;
1.180     albertel  234:     my $msgcount = &get_uniq();
1.156     raeburn   235:     unless(defined($msgid)) {
1.159     raeburn   236:         $msgid = &buildmsgid($now,$subject,$env{'user.name'},$env{'user.domain'},
1.191     raeburn   237:                            $msgcount,$course_context,$symb,$error,$$);
1.156     raeburn   238:     }
1.174     raeburn   239:     my $result = '<sendername>'.$env{'user.name'}.'</sendername>'.
1.140     albertel  240:            '<senderdomain>'.$env{'user.domain'}.'</senderdomain>'.
1.1       www       241:            '<subject>'.$subject.'</subject>'.
1.174     raeburn   242:            '<time>'.&Apache::lonlocal::locallocaltime($now).'</time>';
                    243:     if (defined($crsmsgid)) {
                    244:         $result.= '<courseid>'.$course_context.'</courseid>'.
                    245:                   '<coursesec>'.$env{'request.course.sec'}.'</coursesec>'.
                    246:                   '<msgid>'.$msgid.'</msgid>'.
                    247:                   '<coursemsgid>'.$crsmsgid.'</coursemsgid>'.
                    248:                   '<message>'.$message.'</message>';
                    249:         return ($msgid,$result);
                    250:     }
                    251:     $result .= '<servername>'.$ENV{'SERVER_NAME'}.'</servername>'.
1.1       www       252:            '<host>'.$ENV{'HTTP_HOST'}.'</host>'.
                    253: 	   '<client>'.$ENV{'REMOTE_ADDR'}.'</client>'.
1.140     albertel  254: 	   '<browsertype>'.$env{'browser.type'}.'</browsertype>'.
                    255: 	   '<browseros>'.$env{'browser.os'}.'</browseros>'.
                    256: 	   '<browserversion>'.$env{'browser.version'}.'</browserversion>'.
                    257:            '<browsermathml>'.$env{'browser.mathml'}.'</browsermathml>'.
1.1       www       258: 	   '<browserraw>'.$ENV{'HTTP_USER_AGENT'}.'</browserraw>'.
1.158     raeburn   259: 	   '<courseid>'.$course_context.'</courseid>'.
1.140     albertel  260: 	   '<coursesec>'.$env{'request.course.sec'}.'</coursesec>'.
                    261: 	   '<role>'.$env{'request.role'}.'</role>'.
                    262: 	   '<resource>'.$env{'request.filename'}.'</resource>'.
1.156     raeburn   263:            '<msgid>'.$msgid.'</msgid>';
1.214     raeburn   264:     if (defined($env{'form.group'})) {
                    265:         $result .= '<group>'.$env{'form.group'}.'</group>';
                    266:     }
1.156     raeburn   267:     if (ref($recuser) eq 'ARRAY') {
                    268:         for (my $i=0; $i<@{$recuser}; $i++) {
1.162     raeburn   269:             if ($type eq 'dcmail') {
                    270:                 my ($username,$email) = split(/:/,$$recuser[$i]);
1.184     www       271:                 $username = &unescape($username);
                    272:                 $email = &unescape($email);
1.162     raeburn   273:                 $username = &HTML::Entities::encode($username,'<>&"');
                    274:                 $email = &HTML::Entities::encode($email,'<>&"');
                    275:                 $result .= '<recipient username="'.$username.'">'.
                    276:                                             $email.'</recipient>';
                    277:             } else {
                    278:                 $result .= '<recuser>'.$$recuser[$i].'</recuser>'.
                    279:                            '<recdomain>'.$$recdomain[$i].'</recdomain>';
                    280:             }
1.156     raeburn   281:         }
                    282:     } else {
                    283:         $result .= '<recuser>'.$recuser.'</recuser>'.
                    284:                    '<recdomain>'.$recdomain.'</recdomain>';
                    285:     }
                    286:     $result .= '<message>'.$message.'</message>';
1.49      albertel  287:     if (defined($citation)) {
                    288: 	$result.='<citation>'.$citation.'</citation>';
                    289:     }
                    290:     if (defined($baseurl)) {
                    291: 	$result.= '<baseurl>'.$baseurl.'</baseurl>';
                    292:     }
1.51      www       293:     if (defined($attachmenturl)) {
1.52      www       294: 	$result.= '<attachmenturl>'.$attachmenturl.'</attachmenturl>';
1.51      www       295:     }
1.191     raeburn   296:     if (defined($symb)) {
                    297:         $result.= '<symb>'.$symb.'</symb>';
1.201     raeburn   298:         if ($course_context ne '') {
1.191     raeburn   299:             if ($course_context eq $env{'request.course.id'}) {
                    300:                 my $resource_title = &Apache::lonnet::gettitle($symb);
                    301:                 if (defined($resource_title)) {
                    302:                     $result .= '<resource_title>'.$resource_title.'</resource_title>';
                    303:                 }
                    304:             }
                    305:         }
                    306:     }
1.202     raeburn   307:     if (defined($recipid)) {
                    308:         $result.= '<recipid>'.$recipid.'</recipid>';
                    309:     }
1.204     raeburn   310:     if ($env{'form.can_reply'} eq 'N') {
                    311:         $result .= '<noreplies>1</noreplies>';
                    312:     }
                    313:     if ($env{'form.reply_to_addr'}) {
                    314:         my ($replytoname,$replytodom) = split(/:/,$env{'form.reply_to_addr'});
                    315:         if (!($replytoname eq $env{'user.name'} && $replytodom eq $env{'user.domain'})) {
                    316:             if (&Apache::lonnet::homeserver($replytoname,$replytodom) ne 'no_host') {
                    317:                 $result .= '<replytoaddr>'.$env{'form.reply_to_addr'}.'</replytoaddr>';
                    318:             }
                    319:         }
                    320:     }
1.191     raeburn   321:     return ($msgid,$result);
1.1       www       322: }
                    323: 
1.201     raeburn   324: sub get_course_context {
                    325:     my $course_context;
1.212     raeburn   326:     my $msgkey;
1.201     raeburn   327:     if (defined($env{'form.replyid'})) {
1.212     raeburn   328:         $msgkey = $env{'form.replyid'};
                    329:     } elsif (defined($env{'form.forwid'})) {
                    330:         $msgkey = $env{'form.forwid'}
                    331:     } elsif (defined($env{'form.multiforwid'})) {
                    332:         $msgkey = $env{'form.multiforwid'};
                    333:     }
                    334:     if ($msgkey ne '') {
1.201     raeburn   335:         my ($sendtime,$shortsubj,$fromname,$fromdomain,$count,$origcid)=
1.212     raeburn   336:                    split(/\:/,&unescape($msgkey));
1.201     raeburn   337:         $course_context = $origcid;
                    338:     }
                    339:     foreach my $key (keys(%env)) {
                    340:         if ($key=~/^form\.(rep)?rec\_(.*)$/) {
                    341:             my ($sendtime,$shortsubj,$fromname,$fromdomain,$count,$origcid) =
                    342:                                     split(/\:/,&unescape($2));
                    343:             $course_context = $origcid;
                    344:             last;
                    345:         }
                    346:     }
                    347:     if ($course_context eq '') {
                    348:         $course_context = $env{'request.course.id'};
                    349:     }
                    350:     return $course_context;
                    351: }
                    352: 
1.2       www       353: 
1.3       www       354: sub unpackagemsg {
1.212     raeburn   355:     my ($message,$notoken,$noattachmentlink)=@_;
1.2       www       356:     my %content=();
                    357:     my $parser=HTML::TokeParser->new(\$message);
                    358:     my $token;
                    359:     while ($token=$parser->get_token) {
                    360:        if ($token->[0] eq 'S') {
                    361: 	   my $entry=$token->[1];
                    362:            my $value=$parser->get_text('/'.$entry);
1.156     raeburn   363:            if (($entry eq 'recuser') || ($entry eq 'recdomain')) {
                    364:                push(@{$content{$entry}},$value);
1.162     raeburn   365:            } elsif ($entry eq 'recipient') {
                    366:                my $username = $token->[2]{'username'};
                    367:                $username = &HTML::Entities::decode($username,'<>&"');
                    368:                $content{$entry}{$username} = $value;
1.156     raeburn   369:            } else {
                    370:                $content{$entry}=$value;
                    371:            }
1.2       www       372:        }
                    373:     }
1.168     albertel  374:     if (!exists($content{'recuser'})) { $content{'recuser'} = []; }
1.212     raeburn   375:     if (($content{'attachmenturl'}) && (!$noattachmentlink)) {
1.100     albertel  376:        my ($fname)=($content{'attachmenturl'}=~m|/([^/]+)$|);
1.52      www       377:        if ($notoken) {
1.100     albertel  378: 	   $content{'message'}.='<p>'.&mt('Attachment').': <tt>'.$fname.'</tt>';
1.52      www       379:        } else {
1.99      albertel  380: 	   &Apache::lonnet::allowuploaded('/adm/msg',
                    381: 					  $content{'attachmenturl'});
                    382: 	   $content{'message'}.='<p>'.&mt('Attachment').
                    383: 	       ': <a href="'.$content{'attachmenturl'}.'"><tt>'.
1.100     albertel  384: 	       $fname.'</tt></a>';
1.52      www       385:        }
                    386:     }
1.2       www       387:     return %content;
                    388: }
                    389: 
1.6       www       390: 
1.159     raeburn   391: sub buildmsgid {
1.191     raeburn   392:     my ($now,$subject,$uname,$udom,$msgcount,$course_context,$symb,$error,$pid) = @_;
1.184     www       393:     $subject=&escape($subject);
1.192     raeburn   394:     $symb = &escape($symb);
1.184     www       395:     return(&escape($now.':'.$subject.':'.$uname.':'.
1.191     raeburn   396:            $udom.':'.$msgcount.':'.$course_context.':'.$pid.':'.$symb.':'.$error));
1.159     raeburn   397: }
                    398: 
1.6       www       399: sub unpackmsgid {
1.169     albertel  400:     my ($msgid,$folder,$skipstatus,$status_cache)=@_;
1.184     www       401:     $msgid=&unescape($msgid);
1.167     raeburn   402:     my ($sendtime,$shortsubj,$fromname,$fromdomain,$count,$fromcid,
1.191     raeburn   403:         $processid,$symb,$error) = split(/\:/,&unescape($msgid));
1.184     www       404:     $shortsubj = &unescape($shortsubj);
1.182     albertel  405:     $shortsubj = &HTML::Entities::decode($shortsubj);
1.192     raeburn   406:     $symb = &unescape($symb);
1.167     raeburn   407:     if (!defined($processid)) { $fromcid = ''; }
1.164     raeburn   408:     my %status=();
                    409:     unless ($skipstatus) {
1.169     albertel  410: 	if (ref($status_cache)) {
                    411: 	    $status{$msgid} = $status_cache->{$msgid};
                    412: 	} else {
                    413: 	    my $suffix=&foldersuffix($folder);
                    414: 	    %status=&Apache::lonnet::get('email_status'.$suffix,[$msgid]);
                    415: 	}
                    416: 	if ($status{$msgid}=~/^error\:/) { $status{$msgid}=''; }
1.164     raeburn   417:         unless ($status{$msgid}) { $status{$msgid}='new'; }
                    418:     }
1.191     raeburn   419:     return ($sendtime,$shortsubj,$fromname,$fromdomain,$status{$msgid},$fromcid,$symb,$error);
1.141     raeburn   420: }
1.6       www       421: 
1.53      www       422: 
                    423: sub sendemail {
1.213     raeburn   424:     my ($to,$subject,$body,$to_uname,$to_udom,$user_lh)=@_;
1.186     www       425:     my %senderemails=&Apache::loncommon::getemails();
                    426:     my $senderaddress='';
                    427:     foreach my $type ('notification','permanentemail','critnotification') {
                    428: 	if ($senderemails{$type}) {
                    429: 	    $senderaddress=$senderemails{$type};
                    430: 	}
                    431:     }
1.53      www       432:     $body=
1.213     raeburn   433:     "*** ".&mt_user($user_lh,'This is an automatic message generated by the LON-CAPA system.')."\n".
                    434:     "*** ".($senderaddress?&mt_user($user_lh,'You can reply to this message'):&mt_user($user_lh,'Please do not reply to this address.')."\n*** ".
                    435: 	    &mt_user($user_lh,'A reply will not be received by the recipient!'))."\n\n".$body;
1.53      www       436:     my $msg = new Mail::Send;
                    437:     $msg->to($to);
                    438:     $msg->subject('[LON-CAPA] '.$subject);
1.188     www       439:     if ($senderaddress) { $msg->add('Reply-to',$senderaddress); $msg->add('From',$senderaddress); }
1.97      matthew   440:     if (my $fh = $msg->open()) {
1.172     albertel  441: 	print $fh $body;
                    442: 	$fh->close;
1.68      www       443:     }
1.53      www       444: }
                    445: 
                    446: # ==================================================== Send notification emails
                    447: 
                    448: sub sendnotification {
1.194     raeburn   449:     my ($to,$touname,$toudom,$subj,$crit,$text,$msgid)=@_;
1.140     albertel  450:     my $sender=$env{'environment.firstname'}.' '.$env{'environment.lastname'};
1.131     www       451:     unless ($sender=~/\w/) { 
1.208     raeburn   452: 	$sender=$env{'user.name'}.':'.$env{'user.domain'};
1.131     www       453:     }
1.53      www       454:     my $critical=($crit?' critical':'');
1.208     raeburn   455: 
1.131     www       456:     $text=~s/\&lt\;/\</gs;
                    457:     $text=~s/\&gt\;/\>/gs;
1.53      www       458:     my $url='http://'.
1.198     albertel  459: 	&Apache::lonnet::hostname(&Apache::lonnet::homeserver($touname,$toudom)).
1.54      www       460:       '/adm/email?username='.$touname.'&domain='.$toudom;
1.194     raeburn   461:     my ($sendtime,$shortsubj,$fromname,$fromdomain,$status,$fromcid,
                    462:         $symb,$error) = &Apache::lonmsg::unpackmsgid($msgid);
1.208     raeburn   463:     my ($coursetext,$body,$bodybegin,$bodysubj,$bodyend);
1.213     raeburn   464:     my $user_lh = &user_lang($touname,$toudom,$fromcid);
1.194     raeburn   465:     if ($fromcid ne '') {
1.213     raeburn   466:         $coursetext = "\n".&mt_user($user_lh,'Course').': ';
1.194     raeburn   467:         if ($env{'course.'.$fromcid.'.description'} ne '') {
                    468:             $coursetext .= $env{'course.'.$fromcid.'.description'};
                    469:         } else {
                    470:             my %coursehash = &Apache::lonnet::coursedescription($fromcid,);
                    471:             if ($coursehash{'description'} ne '') {
                    472:                 $coursetext .= $coursehash{'description'};
                    473:             }
                    474:         }
                    475:         $coursetext .= "\n\n";
                    476:     }
1.206     raeburn   477:     my @recipients = split(/,/,$to);
1.208     raeburn   478:     $bodybegin = $coursetext. 
1.213     raeburn   479:                &mt_user($user_lh,
                    480:                          'You received a'.$critical.' message from [_1] in LON-CAPA.',$sender).' ';
                    481:     $bodysubj = &mt_user($user_lh,'The subject is 
1.53      www       482: 
1.195     raeburn   483:  [_1]
1.53      www       484: 
1.195     raeburn   485: ',$subj)."\n".
1.213     raeburn   486: '=== '.&mt_user($user_lh,'Excerpt')." ============================================================
1.206     raeburn   487: ";
                    488:     $bodyend = "
1.131     www       489: ========================================================================
                    490: 
1.213     raeburn   491: ".&mt_user($user_lh,'Use 
1.53      www       492: 
1.195     raeburn   493:  [_1]
1.53      www       494: 
1.195     raeburn   495: to access the full message.',$url);
1.206     raeburn   496:     my %userenv = &Apache::lonnet::get('environment',['notifywithhtml'],$toudom,$touname);
1.213     raeburn   497:     my $subject = &mt_user($user_lh,"'New' $critical message from ").$sender;
1.208     raeburn   498:  
                    499:     my ($blocked,$blocktext);
                    500:     if (!$crit) {
                    501:         my %setters;
                    502:         my ($startblock,$endblock) = 
                    503:             &Apache::loncommon::blockcheck(\%setters,'com',$touname,$toudom);
                    504:         if ($startblock && $endblock) {
                    505:             $blocked = 1;
1.209     albertel  506:             my $showstart = &Apache::lonlocal::locallocaltime($startblock);
                    507:             my $showend = &Apache::lonlocal::locallocaltime($endblock);
1.213     raeburn   508:             $blocktext = &mt_user($user_lh,'LON-CAPA messages sent to you between [_1] and [_2] will be inaccessible until the end of this time period, because you are a student in a course with an active communications block.',$showstart,$showend);
1.208     raeburn   509:         }
                    510:     }
1.206     raeburn   511:     if ($userenv{'notifywithhtml'} ne '') {
                    512:         my @htmlexcerpt = split(/,/,$userenv{'notifywithhtml'});
                    513:         foreach my $addr (@recipients) {
1.208     raeburn   514:             if ($blocked) {
                    515:                 $body = $bodybegin."\n".$blocktext."\n".$bodyend;
                    516:             } else {
                    517:                 my $sendtext = $text;
                    518:                 if (!grep/^\Q$addr\E/,@htmlexcerpt) {
                    519:                     $sendtext =~ s/\<\/*[^\>]+\>//gs;
                    520:                 }
                    521:                 $body = $bodybegin.$bodysubj.$sendtext.$bodyend;
1.206     raeburn   522:             }
1.213     raeburn   523:             &sendemail($addr,$subject,$body,$touname,$toudom,$user_lh);
1.206     raeburn   524:         }
                    525:     } else {
1.208     raeburn   526:         if ($blocked) {
                    527:             $body = $bodybegin."\n".$blocktext."\n".$bodyend;
                    528:         } else {
                    529:             $text =~ s/\<\/*[^\>]+\>//gs;
                    530:             $body = $bodybegin.$bodysubj.$text.$bodyend;
                    531:         }
1.213     raeburn   532:         &sendemail($to,$subject,$body,$touname,$toudom,$user_lh);
1.206     raeburn   533:     }
1.53      www       534: }
1.215   ! jms       535: 
1.40      www       536: 
                    537: sub newmail {
1.140     albertel  538:     if ((time-$env{'user.mailcheck.time'})>300) {
1.40      www       539:         my %what=&Apache::lonnet::get('email_status',['recnewemail']);
1.211     raeburn   540:         &Apache::lonnet::appenv({'user.mailcheck.time'=>time});
1.40      www       541:         if ($what{'recnewemail'}>0) { return 1; }
                    542:     }
                    543:     return 0;
                    544: }
                    545: 
1.1       www       546: 
1.58      bowersj2  547: 
1.1       www       548: sub author_res_msg {
                    549:     my ($filename,$message)=@_;
1.2       www       550:     unless ($message) { return 'empty'; }
1.1       www       551:     $filename=&Apache::lonnet::declutter($filename);
1.72      www       552:     my ($domain,$author,@dummy)=split(/\//,$filename);
1.1       www       553:     my $homeserver=&Apache::lonnet::homeserver($author,$domain);
                    554:     if ($homeserver ne 'no_host') {
                    555:        my $id=unpack("%32C*",$message);
1.181     albertel  556:        $message .= " <p>This error occurred on machine ".
                    557: 	   $Apache::lonnet::perlvar{'lonHostID'}."</p>";
1.2       www       558:        my $msgid;
1.72      www       559:        ($msgid,$message)=&packagemsg($filename,$message);
1.3       www       560:        return &Apache::lonnet::reply('put:'.$domain.':'.$author.
1.72      www       561:          ':nohist_res_msgs:'.
1.184     www       562:           &escape($filename.'_'.$id).'='.
                    563:           &escape($message),$homeserver);
1.1       www       564:     }
1.2       www       565:     return 'no_host';
1.73      www       566: }
                    567: 
1.215   ! jms       568: 
1.73      www       569: 
                    570: sub retrieve_author_res_msg {
1.75      www       571:     my $url=shift;
1.73      www       572:     $url=&Apache::lonnet::declutter($url);
1.187     albertel  573:     my ($domain,$author)=($url=~/^($match_domain)\/($match_username)\//);
1.76      www       574:     my %errormsgs=&Apache::lonnet::dump('nohist_res_msgs',$domain,$author);
1.73      www       575:     my $msgs='';
                    576:     foreach (keys %errormsgs) {
1.80      www       577: 	if ($_=~/^\Q$url\E\_\d+$/) {
1.73      www       578: 	    my %content=&unpackagemsg($errormsgs{$_});
1.74      www       579: 	    $msgs.='<p><img src="/adm/lonMisc/bomb.gif" /><b>'.
                    580: 		$content{'time'}.'</b>: '.$content{'message'}.
                    581: 		'<br /></p>';
1.73      www       582: 	}
                    583:     } 
                    584:     return $msgs;     
                    585: }
                    586: 
                    587: 
1.215   ! jms       588: 
        !           589: 
1.73      www       590: 
                    591: sub del_url_author_res_msg {
1.75      www       592:     my $url=shift;
1.73      www       593:     $url=&Apache::lonnet::declutter($url);
1.187     albertel  594:     my ($domain,$author)=($url=~/^($match_domain)\/($match_username)\//);
1.77      www       595:     my @delmsgs=();
                    596:     foreach (&Apache::lonnet::getkeys('nohist_res_msgs',$domain,$author)) {
                    597: 	if ($_=~/^\Q$url\E\_\d+$/) {
                    598: 	    push (@delmsgs,$_);
                    599: 	}
                    600:     }
                    601:     return &Apache::lonnet::del('nohist_res_msgs',\@delmsgs,$domain,$author);
1.73      www       602: }
1.215   ! jms       603: 
1.73      www       604: 
1.152     www       605: sub clear_author_res_msg {
                    606:     my $url=shift;
                    607:     $url=&Apache::lonnet::declutter($url);
1.187     albertel  608:     my ($domain,$author)=($url=~/^($match_domain)\/($match_username)\//);
1.152     www       609:     my @delmsgs=();
                    610:     foreach (&Apache::lonnet::getkeys('nohist_res_msgs',$domain,$author)) {
                    611: 	if ($_=~/^\Q$url\E/) {
                    612: 	    push (@delmsgs,$_);
                    613: 	}
                    614:     }
                    615:     return &Apache::lonnet::del('nohist_res_msgs',\@delmsgs,$domain,$author);
                    616: }
1.215   ! jms       617: 
        !           618: 
1.73      www       619: 
                    620: sub all_url_author_res_msg {
                    621:     my ($author,$domain)=@_;
1.75      www       622:     my %returnhash=();
1.76      www       623:     foreach (&Apache::lonnet::getkeys('nohist_res_msgs',$domain,$author)) {
1.75      www       624: 	$_=~/^(.+)\_\d+/;
                    625: 	$returnhash{$1}=1;
                    626:     }
                    627:     return %returnhash;
1.1       www       628: }
                    629: 
1.185     albertel  630: 
                    631: sub store_instructor_comment {
                    632:     my ($msg,$uname,$udom) = @_;
                    633:     my $cid  = $env{'request.course.id'};
                    634:     my $cnum = $env{'course.'.$cid.'.num'};
                    635:     my $cdom = $env{'course.'.$cid.'.domain'};
                    636:     my $subject= &mt('Record').' ['.$uname.':'.$udom.']';
                    637:     my $result = &user_normal_msg_raw($cnum,$cdom,$subject,$msg);
1.201     raeburn   638:     if ($result eq 'ok' || $result eq 'con_delayed') {
                    639:         
                    640:     }
1.185     albertel  641:     return $result;
                    642: }
                    643: 
1.1       www       644: 
1.38      www       645: sub user_crit_msg_raw {
1.201     raeburn   646:     my ($user,$domain,$subject,$message,$sendback,$toperm,$sentmessage,
1.212     raeburn   647:         $nosentstore,$recipid,$attachmenturl)=@_;
1.2       www       648: # Check if allowed missing
1.190     raeburn   649:     my ($status,$packed_message);
1.2       www       650:     my $msgid='undefined';
                    651:     unless (($message)&&($user)&&($domain)) { $status='empty'; };
1.131     www       652:     my $text=$message;
1.2       www       653:     my $homeserver=&Apache::lonnet::homeserver($user,$domain);
                    654:     if ($homeserver ne 'no_host') {
1.202     raeburn   655:        ($msgid,$packed_message)=&packagemsg($subject,$message,undef,undef,
1.212     raeburn   656:                                   $attachmenturl,undef,undef,undef,undef,undef,
                    657:                                   undef,undef,$recipid);
1.190     raeburn   658:        if ($sendback) { $packed_message.='<sendback>true</sendback>'; }
1.210     albertel  659:        $status=&Apache::lonnet::cput('critical', {$msgid => $packed_message},
                    660: 				     $domain,$user);
1.159     raeburn   661:         if (defined($sentmessage)) {
1.190     raeburn   662:             $$sentmessage = $packed_message;
1.159     raeburn   663:         }
1.201     raeburn   664:         if (!$nosentstore) {
1.193     raeburn   665:             (undef,my $packed_message_no_citation) =
1.212     raeburn   666:             &packagemsg($subject,$message,undef,undef,$attachmenturl,$user,
                    667:                         $domain,$msgid);
1.193     raeburn   668:             if ($status eq 'ok' || $status eq 'con_delayed') {
                    669:                 &store_sent_mail($msgid,$packed_message_no_citation);
                    670:             }
                    671:         }
1.2       www       672:     } else {
                    673:        $status='no_host';
                    674:     }
1.190     raeburn   675: 
1.53      www       676: # Notifications
1.186     www       677:     my %userenv = &Apache::loncommon::getemails($user,$domain);
1.53      www       678:     if ($userenv{'critnotification'}) {
1.131     www       679:       &sendnotification($userenv{'critnotification'},$user,$domain,$subject,1,
1.194     raeburn   680: 			$text,$msgid);
1.53      www       681:     }
1.132     www       682:     if ($toperm && $userenv{'permanentemail'}) {
                    683:       &sendnotification($userenv{'permanentemail'},$user,$domain,$subject,1,
1.194     raeburn   684: 			$text,$msgid);
1.132     www       685:     }
1.53      www       686: # Log this
1.2       www       687:     &Apache::lonnet::logthis(
1.4       www       688:       'Sending critical email '.$msgid.
1.2       www       689:       ', log status: '.
1.140     albertel  690:       &Apache::lonnet::log($env{'user.domain'},$env{'user.name'},
                    691:                          $env{'user.home'},
1.2       www       692:       'Sending critical '.$msgid.' to '.$user.' at '.$domain.' with status: '
1.4       www       693:       .$status));
1.2       www       694:     return $status;
                    695: }
                    696: 
1.38      www       697: 
1.58      bowersj2  698: 
1.38      www       699: sub user_crit_msg {
1.201     raeburn   700:     my ($user,$domain,$subject,$message,$sendback,$toperm,$sentmessage,
1.212     raeburn   701:         $nosentstore,$recipid,$attachmenturl)=@_;
1.183     albertel  702:     my @status;
1.38      www       703:     my %userenv = &Apache::lonnet::get('environment',['msgforward'],
                    704:                                        $domain,$user);
                    705:     my $msgforward=$userenv{'msgforward'};
                    706:     if ($msgforward) {
1.183     albertel  707:        foreach my $addr (split(/\,/,$msgforward)) {
                    708: 	 my ($forwuser,$forwdomain)=split(/\:/,$addr);
                    709:          push(@status,
                    710: 	      &user_crit_msg_raw($forwuser,$forwdomain,$subject,$message,
1.202     raeburn   711: 				 $sendback,$toperm,$sentmessage,$nosentstore,
1.212     raeburn   712:                                  $recipid,$attachmenturl));
1.38      www       713:        }
                    714:     } else { 
1.183     albertel  715: 	push(@status,
                    716: 	     &user_crit_msg_raw($user,$domain,$subject,$message,$sendback,
1.212     raeburn   717: 				$toperm,$sentmessage,$nosentstore,$recipid,
                    718:                                 $attachmenturl));
1.38      www       719:     }
1.183     albertel  720:     if (wantarray) {
                    721: 	return @status;
                    722:     }
                    723:     return join(' ',@status);
1.38      www       724: }
                    725: 
1.2       www       726: 
                    727: sub user_crit_received {
1.12      www       728:     my $msgid=shift;
                    729:     my %message=&Apache::lonnet::get('critical',[$msgid]);
1.52      www       730:     my %contents=&unpackagemsg($message{$msgid},1);
1.204     raeburn   731:     my $destname = $contents{'sendername'};
                    732:     my $destdom = $contents{'senderdomain'};
                    733:     if ($contents{'replytoaddr'}) {
                    734:         my ($repname,$repdom) = split(/:/,$contents{'replytoaddr'});
                    735:         if (&Apache::lonnet::homeserver($repname,$repdom) ne 'no_host') {
                    736:             $destname = $repname;
                    737:             $destdom = $repdom;    
                    738:         }
                    739:     }
1.24      www       740:     my $status='rec: '.($contents{'sendback'}?
1.204     raeburn   741:      &user_normal_msg($destname,$destdom,&mt('Receipt').': '.$env{'user.name'}.
                    742:                       ' '.&mt('at').' '.$env{'user.domain'}.', '.
                    743:                       $contents{'subject'},&mt('User').' '.$env{'user.name'}.
                    744:                       ' '.&mt('at').' '.$env{'user.domain'}.
                    745:                       ' acknowledged receipt of message'."\n".'   "'.
                    746:                       $contents{'subject'}.'"'."\n".&mt('dated').' '.
                    747:                       $contents{'time'}.".\n"
                    748:                       ):'no msg req');
1.5       www       749:     $status.=' trans: '.
1.12      www       750:      &Apache::lonnet::put(
                    751:      'nohist_email',{$contents{'msgid'} => $message{$msgid}});
1.5       www       752:     $status.=' del: '.
1.9       albertel  753:      &Apache::lonnet::del('critical',[$contents{'msgid'}]);
1.140     albertel  754:     &Apache::lonnet::log($env{'user.domain'},$env{'user.name'},
                    755:                          $env{'user.home'},'Received critical message '.
1.5       www       756:                          $contents{'msgid'}.
                    757:                          ', '.$status);
1.12      www       758:     return $status;
1.2       www       759: }
                    760: 
1.215   ! jms       761: 
        !           762: 
1.2       www       763: 
1.38      www       764: sub user_normal_msg_raw {
1.132     www       765:     my ($user,$domain,$subject,$message,$citation,$baseurl,$attachmenturl,
1.191     raeburn   766:         $toperm,$currid,$newid,$sentmessage,$crsmsgid,$symb,$restitle,
1.202     raeburn   767:         $error,$nosentstore,$recipid)=@_;
1.2       www       768: # Check if allowed missing
1.173     albertel  769:     my ($status,$packed_message);
1.2       www       770:     my $msgid='undefined';
1.131     www       771:     my $text=$message;
1.2       www       772:     unless (($message)&&($user)&&($domain)) { $status='empty'; };
                    773:     my $homeserver=&Apache::lonnet::homeserver($user,$domain);
                    774:     if ($homeserver ne 'no_host') {
1.173     albertel  775:        ($msgid,$packed_message)=
                    776: 	                 &packagemsg($subject,$message,$citation,$baseurl,
1.174     raeburn   777:                                      $attachmenturl,$user,$domain,$currid,
1.202     raeburn   778:                                      undef,$crsmsgid,$symb,$error,$recipid);
1.174     raeburn   779: 
1.108     www       780: # Store in user folder
1.210     albertel  781:        $status=
                    782: 	   &Apache::lonnet::cput('nohist_email',{$msgid => $packed_message},
                    783: 				 $domain,$user);
1.108     www       784: # Save new message received time
1.40      www       785:        &Apache::lonnet::put
                    786:                          ('email_status',{'recnewemail'=>time},$domain,$user);
1.201     raeburn   787: # Into sent-mail folder if sent mail storage required
                    788:        if (!$nosentstore) {
1.190     raeburn   789:            (undef,my $packed_message_no_citation) =
                    790:                &packagemsg($subject,$message,undef,$baseurl,$attachmenturl,
1.191     raeburn   791:                            $user,$domain,$currid,undef,$crsmsgid,$symb,$error);
1.193     raeburn   792:            if ($status eq 'ok' || $status eq 'con_delayed') {
                    793:                &store_sent_mail($msgid,$packed_message_no_citation);
                    794:            }
1.156     raeburn   795:        }
1.201     raeburn   796:        if (ref($newid) eq 'SCALAR') {
1.196     www       797: 	   $$newid = $msgid;
                    798:        }
1.201     raeburn   799:        if (ref($sentmessage) eq 'SCALAR') {
1.196     www       800: 	   $$sentmessage = $packed_message;
                    801:        }
                    802: # Notifications
1.206     raeburn   803:        my %userenv = &Apache::loncommon::getemails($user,$domain);
1.196     www       804:        if ($userenv{'notification'}) {
                    805: 	   &sendnotification($userenv{'notification'},$user,$domain,$subject,0,
                    806: 			     $text,$msgid);
                    807:        }
                    808:        if ($toperm && $userenv{'permanentemail'}) {
1.214     raeburn   809:            if ((!$userenv{'notification'}) || ($userenv{'notification'} ne $userenv{'permanentemail'})) {
                    810: 	       &sendnotification($userenv{'permanentemail'},$user,$domain,$subject,0,
                    811: 	  		         $text,$msgid);
                    812:            }
1.196     www       813:        }
                    814:        &Apache::lonnet::log($env{'user.domain'},$env{'user.name'},
                    815: 			    $env{'user.home'},
                    816: 			    'Sending '.$msgid.' to '.$user.' at '.$domain.' with status: '.$status);
                    817:    } else {
1.2       www       818:        $status='no_host';
1.196     www       819:    }
1.2       www       820:     return $status;
                    821: }
1.38      www       822: 
                    823: sub user_normal_msg {
1.132     www       824:     my ($user,$domain,$subject,$message,$citation,$baseurl,$attachmenturl,
1.202     raeburn   825: 	$toperm,$sentmessage,$symb,$restitle,$error,$nosentstore,$recipid)=@_;
1.199     raeburn   826:     my @status;
1.38      www       827:     my %userenv = &Apache::lonnet::get('environment',['msgforward'],
                    828:                                        $domain,$user);
                    829:     my $msgforward=$userenv{'msgforward'};
                    830:     if ($msgforward) {
1.171     banghart  831:         foreach (split(/\,/,$msgforward)) {
1.172     albertel  832: 	    my ($forwuser,$forwdomain)=split(/\:/,$_);
1.199     raeburn   833: 	    push(@status,
1.171     banghart  834: 	        &user_normal_msg_raw($forwuser,$forwdomain,$subject,$message,
1.172     albertel  835: 				     $citation,$baseurl,$attachmenturl,$toperm,
1.201     raeburn   836: 				     undef,undef,$sentmessage,undef,$symb,
1.202     raeburn   837:                                      $restitle,$error,$nosentstore,$recipid));
1.171     banghart  838:         }
1.191     raeburn   839:     } else {
1.199     raeburn   840: 	push(@status,&user_normal_msg_raw($user,$domain,$subject,$message,
1.172     albertel  841: 				     $citation,$baseurl,$attachmenturl,$toperm,
1.201     raeburn   842: 				     undef,undef,$sentmessage,undef,$symb,
1.202     raeburn   843:                                      $restitle,$error,$nosentstore,$recipid));
1.199     raeburn   844:     }
                    845:     if (wantarray) {
                    846:         return @status;
1.38      www       847:     }
1.199     raeburn   848:     return join(' ',@status);
1.38      www       849: }
                    850: 
1.201     raeburn   851: sub process_sent_mail {
1.214     raeburn   852:     my ($msgsubj,$subj_prefix,$numsent,$stamp,$msgname,$msgdom,$msgcount,$context,$pid,$savemsg,$recusers,$recudoms,$baseurl,$attachmenturl,$symb,$error,$senderuname,$senderdom,$recipid) = @_;
1.201     raeburn   853:     my $sentsubj;
                    854:     if ($numsent > 1) {
                    855:         $sentsubj = $subj_prefix.' ('.$numsent.' sent) '.$msgsubj;
1.205     raeburn   856:     } else {
                    857:         if ($subj_prefix) {
                    858:             $sentsubj = $subj_prefix.' ';
                    859:         }
                    860:         $sentsubj .= $msgsubj;
1.201     raeburn   861:     }
                    862:     $sentsubj = &HTML::Entities::encode($sentsubj,'<>&"');
                    863:     my $sentmsgid = 
                    864:         &buildmsgid($stamp,$sentsubj,$msgname,$msgdom,$msgcount,$context,$pid);
                    865:     (undef,my $sentmessage) =
                    866:         &packagemsg($msgsubj,$savemsg,undef,$baseurl,$attachmenturl,$recusers,
1.214     raeburn   867:                     $recudoms,$sentmsgid,undef,undef,$symb,$error,$recipid);
1.201     raeburn   868:     my $status = &store_sent_mail($sentmsgid,$sentmessage,$senderuname,
1.210     albertel  869:                                   $senderdom);
1.201     raeburn   870:     return $status;
                    871: }
                    872: 
1.156     raeburn   873: sub store_sent_mail {
1.210     albertel  874:     my ($msgid,$message,$senderuname,$senderdom) = @_;
1.201     raeburn   875:     if ($senderuname eq '') {
                    876:         $senderuname = $env{'user.name'};
                    877:     }
                    878:     if ($senderdom eq '') {
                    879:         $senderdom = $env{'user.domain'};
                    880:     }
1.210     albertel  881:     my $status =' '.&Apache::lonnet::cput('nohist_email_sent',
                    882: 					  {$msgid => $message},
                    883: 					  $senderdom,$senderuname);
1.156     raeburn   884:     return $status;
                    885: }
1.2       www       886: 
1.202     raeburn   887: sub store_recipients {
                    888:     my ($subject,$sendername,$senderdom,$reciphash) = @_;
                    889:     my $context = &get_course_context();
1.203     albertel  890:     my $now = time();
1.202     raeburn   891:     my $msgcount = &get_uniq();
                    892:     my $recipid =
                    893:         &buildmsgid($now,$subject,$sendername,$senderdom,$msgcount,$context,$$);
                    894:     my %recipinfo = (
                    895:                          $recipid => $reciphash,
                    896:                     );
                    897:     my $status = &Apache::lonnet::put('nohist_emailrecip',\%recipinfo,
                    898:                                       $senderdom,$sendername); 
                    899:     if ($status eq 'ok') {
                    900:         return ($recipid,$status);
                    901:     } else {
                    902:         return (undef,$status);
                    903:     }
                    904: }
                    905: 
1.106     www       906: 
                    907: sub foldersuffix {
                    908:     my $folder=shift;
                    909:     unless ($folder) { return ''; }
1.189     raeburn   910:     my $suffix;
                    911:     my %folderhash = &get_user_folders($folder);
                    912:     if (ref($folderhash{$folder}) eq 'HASH') {
                    913:         $suffix = '_'.&escape($folderhash{$folder}{'id'});
                    914:     } else {
                    915:         $suffix = '_'.&escape($folder);
                    916:     }
                    917:     return $suffix;
                    918: }
                    919: 
                    920: 
                    921: sub get_user_folders {
                    922:     my ($folder) = @_;
                    923:     my %userfolders = 
                    924:           &Apache::lonnet::dump('email_folders',undef,undef,$folder);
                    925:     my $lock = "\0".'lock_counter'; # locks db while counter incremented
                    926:     my $counter = "\0".'idcount';   # used in suffix for email db files
                    927:     if (defined($userfolders{$lock})) {
                    928:         delete($userfolders{$lock});
                    929:     }
                    930:     if (defined($userfolders{$counter})) {
                    931:         delete($userfolders{$counter});
                    932:     }
                    933:     return %userfolders;
1.106     www       934: }
                    935: 
1.197     albertel  936: sub secapply {
                    937:     my $rec=shift;
                    938:     my $defaultflag=shift;
                    939:     $rec=~s/\s+//g;
                    940:     $rec=~s/\@/\:/g;
                    941:     my ($adr,$sections_or_groups)=($rec=~/^([^\(]+)\(([^\)]+)\)/);
                    942:     if ($sections_or_groups) {
                    943: 	foreach my $item (split(/\;/,$sections_or_groups)) {
                    944:             if (($item eq $env{'request.course.sec'}) ||
                    945:                 ($defaultflag && ($item eq '*'))) {
                    946:                 return $adr; 
                    947:             } elsif ($env{'request.course.groups'}) {
                    948:                 my @usersgroups = split(/:/,$env{'request.course.groups'});
                    949:                 if (grep(/^\Q$item\E$/,@usersgroups)) {
                    950:                     return $adr;
                    951:                 }
                    952:             } 
                    953:         }
                    954:     } else {
                    955:        return $rec;
                    956:     }
                    957:     return '';
                    958: }
                    959: 
                    960: sub decide_receiver {
                    961:     my ($feedurl,$author,$question,$course,$policy,$defaultflag) = @_;
                    962:     &Apache::lonenc::check_decrypt(\$feedurl);
                    963:     my $typestyle='';
                    964:     my %to=();
                    965:     if ($env{'form.discuss'} eq 'author' ||$author) {
                    966: 	$typestyle.='Submitting as Author Feedback<br />';
                    967: 	$feedurl=~ m{^/res/($LONCAPA::domain_re)/($LONCAPA::username_re)/};
                    968: 	$to{$2.':'.$1}=1;
                    969:     }
                    970:     my $cid = $env{'request.course.id'};
                    971:     if ($env{'form.discuss'} eq 'question' ||$question) {
                    972: 	$typestyle.=&mt('Submitting as Question').'<br />';
                    973: 	foreach my $item (split(/\,/,$env{'course.'.$cid.'.question.email'})) {
                    974: 	    my $rec=&secapply($item,$defaultflag);
                    975: 	    if ($rec) { $to{$rec}=1; }
                    976: 	} 
                    977:     }
                    978:     if ($env{'form.discuss'} eq 'course' ||$course) {
                    979: 	$typestyle.=&mt('Submitting as Comment').'<br />';
                    980: 	foreach my $item (split(/\,/,$env{'course.'.$cid.'.comment.email'})) {
                    981: 	    my $rec=&secapply($item,$defaultflag);
                    982: 	    if ($rec) { $to{$rec}=1; }
                    983: 	} 
                    984:     }
                    985:     if ($env{'form.discuss'} eq 'policy' ||$policy) {
                    986: 	$typestyle.=&mt('Submitting as Policy Feedback').'<br />';
                    987: 	foreach my $item (split(/\,/,$env{'course.'.$cid.'.policy.email'})) {
                    988: 	    my $rec=&secapply($item,$defaultflag);
                    989: 	    if ($rec) { $to{$rec}=1; }
                    990: 	} 
                    991:     }
                    992:     if ((scalar(%to) eq '0') && (!$defaultflag)) {
                    993: 	($typestyle,%to)=
                    994: 	    &decide_receiver($feedurl,$author,$question,$course,$policy,1);
                    995:     }
                    996:     return ($typestyle,%to);
                    997: }
                    998: 
1.213     raeburn   999: sub user_lang {
                   1000:     my ($touname,$toudom,$fromcid) = @_;
                   1001:     my @userlangs;
                   1002:     if (($fromcid ne '') && ($env{'course.'.$fromcid.'.languages'} ne '')) {
                   1003:         @userlangs=(@userlangs,split(/\s*(\,|\;|\:)\s*/,
                   1004:                     $env{'course.'.$fromcid.'.languages'}));
                   1005:     } else {
                   1006:         my %langhash = &Apache::lonnet::get('environment',['languages'],$toudom,$touname);
                   1007:         if ($langhash{'languages'} ne '') {
                   1008:             @userlangs = split(/\s*(\,|\;|\:)\s*/,$langhash{'languages'});  
                   1009:         } else {
                   1010:             my %domdefs = &Apache::lonnet::get_domain_defaults($toudom);
                   1011:             if ($domdefs{'lang_def'} ne '') {
                   1012:                 @userlangs = ($domdefs{'lang_def'});
                   1013:             }
                   1014:         }
                   1015:     }
                   1016:     my @languages=&Apache::loncommon::get_genlanguages(@userlangs);
                   1017:     my $user_lh = Apache::localize->get_handle(@languages);
                   1018:     return $user_lh;
                   1019: }
                   1020: 
1.180     albertel 1021: 1;
1.1       www      1022: __END__
                   1023: 

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