Annotation of loncom/interface/lonmsg.pm, revision 1.212

1.1       www         1: # The LearningOnline Network with CAPA
1.26      albertel    2: # Routines for messaging
                      3: #
1.212   ! raeburn     4: # $Id: lonmsg.pm,v 1.211 2008/03/12 02:45:07 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: 
                     56: =head1 FUNCTIONS
                     57: 
                     58: =over 4
                     59: 
                     60: =cut
                     61: 
1.1       www        62: use strict;
1.140     albertel   63: use Apache::lonnet;
1.47      albertel   64: use HTML::TokeParser();
1.180     albertel   65: use Apache::lonlocal;
1.53      www        66: use Mail::Send;
1.187     albertel   67: use LONCAPA qw(:DEFAULT :match);
1.180     albertel   68: 
                     69: {
                     70:     my $uniq;
                     71:     sub get_uniq {
                     72: 	$uniq++;
                     73: 	return $uniq;
                     74:     }
                     75: }
1.65      www        76: 
1.1       www        77: # ===================================================================== Package
                     78: 
1.3       www        79: sub packagemsg {
1.108     www        80:     my ($subject,$message,$citation,$baseurl,$attachmenturl,
1.202     raeburn    81: 	$recuser,$recdomain,$msgid,$type,$crsmsgid,$symb,$error,$recipid)=@_;
1.96      albertel   82:     $message =&HTML::Entities::encode($message,'<>&"');
                     83:     $citation=&HTML::Entities::encode($citation,'<>&"');
                     84:     $subject =&HTML::Entities::encode($subject,'<>&"');
1.49      albertel   85:     #remove machine specification
                     86:     $baseurl =~ s|^http://[^/]+/|/|;
1.96      albertel   87:     $baseurl =&HTML::Entities::encode($baseurl,'<>&"');
1.51      www        88:     #remove machine specification
                     89:     $attachmenturl =~ s|^http://[^/]+/|/|;
1.96      albertel   90:     $attachmenturl =&HTML::Entities::encode($attachmenturl,'<>&"');
1.201     raeburn    91:     my $course_context = &get_course_context();
1.2       www        92:     my $now=time;
1.180     albertel   93:     my $msgcount = &get_uniq();
1.156     raeburn    94:     unless(defined($msgid)) {
1.159     raeburn    95:         $msgid = &buildmsgid($now,$subject,$env{'user.name'},$env{'user.domain'},
1.191     raeburn    96:                            $msgcount,$course_context,$symb,$error,$$);
1.156     raeburn    97:     }
1.174     raeburn    98:     my $result = '<sendername>'.$env{'user.name'}.'</sendername>'.
1.140     albertel   99:            '<senderdomain>'.$env{'user.domain'}.'</senderdomain>'.
1.1       www       100:            '<subject>'.$subject.'</subject>'.
1.174     raeburn   101:            '<time>'.&Apache::lonlocal::locallocaltime($now).'</time>';
                    102:     if (defined($crsmsgid)) {
                    103:         $result.= '<courseid>'.$course_context.'</courseid>'.
                    104:                   '<coursesec>'.$env{'request.course.sec'}.'</coursesec>'.
                    105:                   '<msgid>'.$msgid.'</msgid>'.
                    106:                   '<coursemsgid>'.$crsmsgid.'</coursemsgid>'.
                    107:                   '<message>'.$message.'</message>';
                    108:         return ($msgid,$result);
                    109:     }
                    110:     $result .= '<servername>'.$ENV{'SERVER_NAME'}.'</servername>'.
1.1       www       111:            '<host>'.$ENV{'HTTP_HOST'}.'</host>'.
                    112: 	   '<client>'.$ENV{'REMOTE_ADDR'}.'</client>'.
1.140     albertel  113: 	   '<browsertype>'.$env{'browser.type'}.'</browsertype>'.
                    114: 	   '<browseros>'.$env{'browser.os'}.'</browseros>'.
                    115: 	   '<browserversion>'.$env{'browser.version'}.'</browserversion>'.
                    116:            '<browsermathml>'.$env{'browser.mathml'}.'</browsermathml>'.
1.1       www       117: 	   '<browserraw>'.$ENV{'HTTP_USER_AGENT'}.'</browserraw>'.
1.158     raeburn   118: 	   '<courseid>'.$course_context.'</courseid>'.
1.140     albertel  119: 	   '<coursesec>'.$env{'request.course.sec'}.'</coursesec>'.
                    120: 	   '<role>'.$env{'request.role'}.'</role>'.
                    121: 	   '<resource>'.$env{'request.filename'}.'</resource>'.
1.156     raeburn   122:            '<msgid>'.$msgid.'</msgid>';
                    123:     if (ref($recuser) eq 'ARRAY') {
                    124:         for (my $i=0; $i<@{$recuser}; $i++) {
1.162     raeburn   125:             if ($type eq 'dcmail') {
                    126:                 my ($username,$email) = split(/:/,$$recuser[$i]);
1.184     www       127:                 $username = &unescape($username);
                    128:                 $email = &unescape($email);
1.162     raeburn   129:                 $username = &HTML::Entities::encode($username,'<>&"');
                    130:                 $email = &HTML::Entities::encode($email,'<>&"');
                    131:                 $result .= '<recipient username="'.$username.'">'.
                    132:                                             $email.'</recipient>';
                    133:             } else {
                    134:                 $result .= '<recuser>'.$$recuser[$i].'</recuser>'.
                    135:                            '<recdomain>'.$$recdomain[$i].'</recdomain>';
                    136:             }
1.156     raeburn   137:         }
                    138:     } else {
                    139:         $result .= '<recuser>'.$recuser.'</recuser>'.
                    140:                    '<recdomain>'.$recdomain.'</recdomain>';
                    141:     }
                    142:     $result .= '<message>'.$message.'</message>';
1.49      albertel  143:     if (defined($citation)) {
                    144: 	$result.='<citation>'.$citation.'</citation>';
                    145:     }
                    146:     if (defined($baseurl)) {
                    147: 	$result.= '<baseurl>'.$baseurl.'</baseurl>';
                    148:     }
1.51      www       149:     if (defined($attachmenturl)) {
1.52      www       150: 	$result.= '<attachmenturl>'.$attachmenturl.'</attachmenturl>';
1.51      www       151:     }
1.191     raeburn   152:     if (defined($symb)) {
                    153:         $result.= '<symb>'.$symb.'</symb>';
1.201     raeburn   154:         if ($course_context ne '') {
1.191     raeburn   155:             if ($course_context eq $env{'request.course.id'}) {
                    156:                 my $resource_title = &Apache::lonnet::gettitle($symb);
                    157:                 if (defined($resource_title)) {
                    158:                     $result .= '<resource_title>'.$resource_title.'</resource_title>';
                    159:                 }
                    160:             }
                    161:         }
                    162:     }
1.202     raeburn   163:     if (defined($recipid)) {
                    164:         $result.= '<recipid>'.$recipid.'</recipid>';
                    165:     }
1.204     raeburn   166:     if ($env{'form.can_reply'} eq 'N') {
                    167:         $result .= '<noreplies>1</noreplies>';
                    168:     }
                    169:     if ($env{'form.reply_to_addr'}) {
                    170:         my ($replytoname,$replytodom) = split(/:/,$env{'form.reply_to_addr'});
                    171:         if (!($replytoname eq $env{'user.name'} && $replytodom eq $env{'user.domain'})) {
                    172:             if (&Apache::lonnet::homeserver($replytoname,$replytodom) ne 'no_host') {
                    173:                 $result .= '<replytoaddr>'.$env{'form.reply_to_addr'}.'</replytoaddr>';
                    174:             }
                    175:         }
                    176:     }
1.191     raeburn   177:     return ($msgid,$result);
1.1       www       178: }
                    179: 
1.201     raeburn   180: sub get_course_context {
                    181:     my $course_context;
1.212   ! raeburn   182:     my $msgkey;
1.201     raeburn   183:     if (defined($env{'form.replyid'})) {
1.212   ! raeburn   184:         $msgkey = $env{'form.replyid'};
        !           185:     } elsif (defined($env{'form.forwid'})) {
        !           186:         $msgkey = $env{'form.forwid'}
        !           187:     } elsif (defined($env{'form.multiforwid'})) {
        !           188:         $msgkey = $env{'form.multiforwid'};
        !           189:     }
        !           190:     if ($msgkey ne '') {
1.201     raeburn   191:         my ($sendtime,$shortsubj,$fromname,$fromdomain,$count,$origcid)=
1.212   ! raeburn   192:                    split(/\:/,&unescape($msgkey));
1.201     raeburn   193:         $course_context = $origcid;
                    194:     }
                    195:     foreach my $key (keys(%env)) {
                    196:         if ($key=~/^form\.(rep)?rec\_(.*)$/) {
                    197:             my ($sendtime,$shortsubj,$fromname,$fromdomain,$count,$origcid) =
                    198:                                     split(/\:/,&unescape($2));
                    199:             $course_context = $origcid;
                    200:             last;
                    201:         }
                    202:     }
                    203:     if ($course_context eq '') {
                    204:         $course_context = $env{'request.course.id'};
                    205:     }
                    206:     return $course_context;
                    207: }
                    208: 
1.2       www       209: # ================================================== Unpack message into a hash
                    210: 
1.3       www       211: sub unpackagemsg {
1.212   ! raeburn   212:     my ($message,$notoken,$noattachmentlink)=@_;
1.2       www       213:     my %content=();
                    214:     my $parser=HTML::TokeParser->new(\$message);
                    215:     my $token;
                    216:     while ($token=$parser->get_token) {
                    217:        if ($token->[0] eq 'S') {
                    218: 	   my $entry=$token->[1];
                    219:            my $value=$parser->get_text('/'.$entry);
1.156     raeburn   220:            if (($entry eq 'recuser') || ($entry eq 'recdomain')) {
                    221:                push(@{$content{$entry}},$value);
1.162     raeburn   222:            } elsif ($entry eq 'recipient') {
                    223:                my $username = $token->[2]{'username'};
                    224:                $username = &HTML::Entities::decode($username,'<>&"');
                    225:                $content{$entry}{$username} = $value;
1.156     raeburn   226:            } else {
                    227:                $content{$entry}=$value;
                    228:            }
1.2       www       229:        }
                    230:     }
1.168     albertel  231:     if (!exists($content{'recuser'})) { $content{'recuser'} = []; }
1.212   ! raeburn   232:     if (($content{'attachmenturl'}) && (!$noattachmentlink)) {
1.100     albertel  233:        my ($fname)=($content{'attachmenturl'}=~m|/([^/]+)$|);
1.52      www       234:        if ($notoken) {
1.100     albertel  235: 	   $content{'message'}.='<p>'.&mt('Attachment').': <tt>'.$fname.'</tt>';
1.52      www       236:        } else {
1.99      albertel  237: 	   &Apache::lonnet::allowuploaded('/adm/msg',
                    238: 					  $content{'attachmenturl'});
                    239: 	   $content{'message'}.='<p>'.&mt('Attachment').
                    240: 	       ': <a href="'.$content{'attachmenturl'}.'"><tt>'.
1.100     albertel  241: 	       $fname.'</tt></a>';
1.52      www       242:        }
                    243:     }
1.2       www       244:     return %content;
                    245: }
                    246: 
1.6       www       247: # ======================================================= Get info out of msgid
                    248: 
1.159     raeburn   249: sub buildmsgid {
1.191     raeburn   250:     my ($now,$subject,$uname,$udom,$msgcount,$course_context,$symb,$error,$pid) = @_;
1.184     www       251:     $subject=&escape($subject);
1.192     raeburn   252:     $symb = &escape($symb);
1.184     www       253:     return(&escape($now.':'.$subject.':'.$uname.':'.
1.191     raeburn   254:            $udom.':'.$msgcount.':'.$course_context.':'.$pid.':'.$symb.':'.$error));
1.159     raeburn   255: }
                    256: 
1.6       www       257: sub unpackmsgid {
1.169     albertel  258:     my ($msgid,$folder,$skipstatus,$status_cache)=@_;
1.184     www       259:     $msgid=&unescape($msgid);
1.167     raeburn   260:     my ($sendtime,$shortsubj,$fromname,$fromdomain,$count,$fromcid,
1.191     raeburn   261:         $processid,$symb,$error) = split(/\:/,&unescape($msgid));
1.184     www       262:     $shortsubj = &unescape($shortsubj);
1.182     albertel  263:     $shortsubj = &HTML::Entities::decode($shortsubj);
1.192     raeburn   264:     $symb = &unescape($symb);
1.167     raeburn   265:     if (!defined($processid)) { $fromcid = ''; }
1.164     raeburn   266:     my %status=();
                    267:     unless ($skipstatus) {
1.169     albertel  268: 	if (ref($status_cache)) {
                    269: 	    $status{$msgid} = $status_cache->{$msgid};
                    270: 	} else {
                    271: 	    my $suffix=&foldersuffix($folder);
                    272: 	    %status=&Apache::lonnet::get('email_status'.$suffix,[$msgid]);
                    273: 	}
                    274: 	if ($status{$msgid}=~/^error\:/) { $status{$msgid}=''; }
1.164     raeburn   275:         unless ($status{$msgid}) { $status{$msgid}='new'; }
                    276:     }
1.191     raeburn   277:     return ($sendtime,$shortsubj,$fromname,$fromdomain,$status{$msgid},$fromcid,$symb,$error);
1.141     raeburn   278: }
1.6       www       279: 
1.53      www       280: 
                    281: sub sendemail {
                    282:     my ($to,$subject,$body)=@_;
1.186     www       283:     my %senderemails=&Apache::loncommon::getemails();
                    284:     my $senderaddress='';
                    285:     foreach my $type ('notification','permanentemail','critnotification') {
                    286: 	if ($senderemails{$type}) {
                    287: 	    $senderaddress=$senderemails{$type};
                    288: 	}
                    289:     }
1.53      www       290:     $body=
1.67      www       291:     "*** ".&mt('This is an automatic message generated by the LON-CAPA system.')."\n".
1.186     www       292:     "*** ".($senderaddress?&mt('You can reply to this message'):&mt('Please do not reply to this address.')."\n*** ".
                    293: 	    &mt('A reply will not be received by the recipient!'))."\n\n".$body;
1.53      www       294:     my $msg = new Mail::Send;
                    295:     $msg->to($to);
                    296:     $msg->subject('[LON-CAPA] '.$subject);
1.188     www       297:     if ($senderaddress) { $msg->add('Reply-to',$senderaddress); $msg->add('From',$senderaddress); }
1.97      matthew   298:     if (my $fh = $msg->open()) {
1.172     albertel  299: 	print $fh $body;
                    300: 	$fh->close;
1.68      www       301:     }
1.53      www       302: }
                    303: 
                    304: # ==================================================== Send notification emails
                    305: 
                    306: sub sendnotification {
1.194     raeburn   307:     my ($to,$touname,$toudom,$subj,$crit,$text,$msgid)=@_;
1.140     albertel  308:     my $sender=$env{'environment.firstname'}.' '.$env{'environment.lastname'};
1.131     www       309:     unless ($sender=~/\w/) { 
1.208     raeburn   310: 	$sender=$env{'user.name'}.':'.$env{'user.domain'};
1.131     www       311:     }
1.53      www       312:     my $critical=($crit?' critical':'');
1.208     raeburn   313: 
1.131     www       314:     $text=~s/\&lt\;/\</gs;
                    315:     $text=~s/\&gt\;/\>/gs;
1.53      www       316:     my $url='http://'.
1.198     albertel  317: 	&Apache::lonnet::hostname(&Apache::lonnet::homeserver($touname,$toudom)).
1.54      www       318:       '/adm/email?username='.$touname.'&domain='.$toudom;
1.194     raeburn   319:     my ($sendtime,$shortsubj,$fromname,$fromdomain,$status,$fromcid,
                    320:         $symb,$error) = &Apache::lonmsg::unpackmsgid($msgid);
1.208     raeburn   321:     my ($coursetext,$body,$bodybegin,$bodysubj,$bodyend);
1.194     raeburn   322:     if ($fromcid ne '') {
                    323:         $coursetext = "\n".&mt('Course').': ';
                    324:         if ($env{'course.'.$fromcid.'.description'} ne '') {
                    325:             $coursetext .= $env{'course.'.$fromcid.'.description'};
                    326:         } else {
                    327:             my %coursehash = &Apache::lonnet::coursedescription($fromcid,);
                    328:             if ($coursehash{'description'} ne '') {
                    329:                 $coursetext .= $coursehash{'description'};
                    330:             }
                    331:         }
                    332:         $coursetext .= "\n\n";
                    333:     }
1.206     raeburn   334:     my @recipients = split(/,/,$to);
1.208     raeburn   335:     $bodybegin = $coursetext. 
                    336:                &mt('You received a'.$critical.' message from [_1] in LON-CAPA.',$sender).' ';
                    337:     $bodysubj = &mt('The subject is 
1.53      www       338: 
1.195     raeburn   339:  [_1]
1.53      www       340: 
1.195     raeburn   341: ',$subj)."\n".
1.194     raeburn   342: '=== '.&mt('Excerpt')." ============================================================
1.206     raeburn   343: ";
                    344:     $bodyend = "
1.131     www       345: ========================================================================
                    346: 
1.195     raeburn   347: ".&mt('Use 
1.53      www       348: 
1.195     raeburn   349:  [_1]
1.53      www       350: 
1.195     raeburn   351: to access the full message.',$url);
1.206     raeburn   352:     my %userenv = &Apache::lonnet::get('environment',['notifywithhtml'],$toudom,$touname);
                    353:     my $subject = &mt("'New' $critical message from ").$sender;
1.208     raeburn   354:  
                    355:     my ($blocked,$blocktext);
                    356:     if (!$crit) {
                    357:         my %setters;
                    358:         my ($startblock,$endblock) = 
                    359:             &Apache::loncommon::blockcheck(\%setters,'com',$touname,$toudom);
                    360:         if ($startblock && $endblock) {
                    361:             $blocked = 1;
1.209     albertel  362:             my $showstart = &Apache::lonlocal::locallocaltime($startblock);
                    363:             my $showend = &Apache::lonlocal::locallocaltime($endblock);
1.208     raeburn   364:             $blocktext = &mt('LON-CAPA messages sent to you between [_1] and [_2] will be inaccessible until the end of this time period, because you are a student in a course with an active communications block.',$showstart,$showend);
                    365:         }
                    366:     }
1.206     raeburn   367:     if ($userenv{'notifywithhtml'} ne '') {
                    368:         my @htmlexcerpt = split(/,/,$userenv{'notifywithhtml'});
                    369:         foreach my $addr (@recipients) {
1.208     raeburn   370:             if ($blocked) {
                    371:                 $body = $bodybegin."\n".$blocktext."\n".$bodyend;
                    372:             } else {
                    373:                 my $sendtext = $text;
                    374:                 if (!grep/^\Q$addr\E/,@htmlexcerpt) {
                    375:                     $sendtext =~ s/\<\/*[^\>]+\>//gs;
                    376:                 }
                    377:                 $body = $bodybegin.$bodysubj.$sendtext.$bodyend;
1.206     raeburn   378:             }
                    379:             &sendemail($addr,$subject,$body);
                    380:         }
                    381:     } else {
1.208     raeburn   382:         if ($blocked) {
                    383:             $body = $bodybegin."\n".$blocktext."\n".$bodyend;
                    384:         } else {
                    385:             $text =~ s/\<\/*[^\>]+\>//gs;
                    386:             $body = $bodybegin.$bodysubj.$text.$bodyend;
                    387:         }
1.206     raeburn   388:         &sendemail($to,$subject,$body);
                    389:     }
1.53      www       390: }
1.40      www       391: # ============================================================= Check for email
                    392: 
                    393: sub newmail {
1.140     albertel  394:     if ((time-$env{'user.mailcheck.time'})>300) {
1.40      www       395:         my %what=&Apache::lonnet::get('email_status',['recnewemail']);
1.211     raeburn   396:         &Apache::lonnet::appenv({'user.mailcheck.time'=>time});
1.40      www       397:         if ($what{'recnewemail'}>0) { return 1; }
                    398:     }
                    399:     return 0;
                    400: }
                    401: 
1.1       www       402: # =============================== Automated message to the author of a resource
                    403: 
1.58      bowersj2  404: =pod
                    405: 
                    406: =item * B<author_res_msg($filename, $message)>: Sends message $message to the owner
                    407:     of the resource with the URI $filename.
                    408: 
                    409: =cut
                    410: 
1.1       www       411: sub author_res_msg {
                    412:     my ($filename,$message)=@_;
1.2       www       413:     unless ($message) { return 'empty'; }
1.1       www       414:     $filename=&Apache::lonnet::declutter($filename);
1.72      www       415:     my ($domain,$author,@dummy)=split(/\//,$filename);
1.1       www       416:     my $homeserver=&Apache::lonnet::homeserver($author,$domain);
                    417:     if ($homeserver ne 'no_host') {
                    418:        my $id=unpack("%32C*",$message);
1.181     albertel  419:        $message .= " <p>This error occurred on machine ".
                    420: 	   $Apache::lonnet::perlvar{'lonHostID'}."</p>";
1.2       www       421:        my $msgid;
1.72      www       422:        ($msgid,$message)=&packagemsg($filename,$message);
1.3       www       423:        return &Apache::lonnet::reply('put:'.$domain.':'.$author.
1.72      www       424:          ':nohist_res_msgs:'.
1.184     www       425:           &escape($filename.'_'.$id).'='.
                    426:           &escape($message),$homeserver);
1.1       www       427:     }
1.2       www       428:     return 'no_host';
1.73      www       429: }
                    430: 
                    431: # =========================================== Retrieve author resource messages
                    432: 
                    433: sub retrieve_author_res_msg {
1.75      www       434:     my $url=shift;
1.73      www       435:     $url=&Apache::lonnet::declutter($url);
1.187     albertel  436:     my ($domain,$author)=($url=~/^($match_domain)\/($match_username)\//);
1.76      www       437:     my %errormsgs=&Apache::lonnet::dump('nohist_res_msgs',$domain,$author);
1.73      www       438:     my $msgs='';
                    439:     foreach (keys %errormsgs) {
1.80      www       440: 	if ($_=~/^\Q$url\E\_\d+$/) {
1.73      www       441: 	    my %content=&unpackagemsg($errormsgs{$_});
1.74      www       442: 	    $msgs.='<p><img src="/adm/lonMisc/bomb.gif" /><b>'.
                    443: 		$content{'time'}.'</b>: '.$content{'message'}.
                    444: 		'<br /></p>';
1.73      www       445: 	}
                    446:     } 
                    447:     return $msgs;     
                    448: }
                    449: 
                    450: 
                    451: # =============================== Delete all author messages related to one URL
                    452: 
                    453: sub del_url_author_res_msg {
1.75      www       454:     my $url=shift;
1.73      www       455:     $url=&Apache::lonnet::declutter($url);
1.187     albertel  456:     my ($domain,$author)=($url=~/^($match_domain)\/($match_username)\//);
1.77      www       457:     my @delmsgs=();
                    458:     foreach (&Apache::lonnet::getkeys('nohist_res_msgs',$domain,$author)) {
                    459: 	if ($_=~/^\Q$url\E\_\d+$/) {
                    460: 	    push (@delmsgs,$_);
                    461: 	}
                    462:     }
                    463:     return &Apache::lonnet::del('nohist_res_msgs',\@delmsgs,$domain,$author);
1.73      www       464: }
1.152     www       465: # =================================== Clear out all author messages in URL path
1.73      www       466: 
1.152     www       467: sub clear_author_res_msg {
                    468:     my $url=shift;
                    469:     $url=&Apache::lonnet::declutter($url);
1.187     albertel  470:     my ($domain,$author)=($url=~/^($match_domain)\/($match_username)\//);
1.152     www       471:     my @delmsgs=();
                    472:     foreach (&Apache::lonnet::getkeys('nohist_res_msgs',$domain,$author)) {
                    473: 	if ($_=~/^\Q$url\E/) {
                    474: 	    push (@delmsgs,$_);
                    475: 	}
                    476:     }
                    477:     return &Apache::lonnet::del('nohist_res_msgs',\@delmsgs,$domain,$author);
                    478: }
1.73      www       479: # ================= Return hash with URLs for which there is a resource message
                    480: 
                    481: sub all_url_author_res_msg {
                    482:     my ($author,$domain)=@_;
1.75      www       483:     my %returnhash=();
1.76      www       484:     foreach (&Apache::lonnet::getkeys('nohist_res_msgs',$domain,$author)) {
1.75      www       485: 	$_=~/^(.+)\_\d+/;
                    486: 	$returnhash{$1}=1;
                    487:     }
                    488:     return %returnhash;
1.1       www       489: }
                    490: 
1.185     albertel  491: # ====================================== Add a comment to the User Notes screen
                    492: 
                    493: sub store_instructor_comment {
                    494:     my ($msg,$uname,$udom) = @_;
                    495:     my $cid  = $env{'request.course.id'};
                    496:     my $cnum = $env{'course.'.$cid.'.num'};
                    497:     my $cdom = $env{'course.'.$cid.'.domain'};
                    498:     my $subject= &mt('Record').' ['.$uname.':'.$udom.']';
                    499:     my $result = &user_normal_msg_raw($cnum,$cdom,$subject,$msg);
1.201     raeburn   500:     if ($result eq 'ok' || $result eq 'con_delayed') {
                    501:         
                    502:     }
1.185     albertel  503:     return $result;
                    504: }
                    505: 
1.1       www       506: # ================================================== Critical message to a user
                    507: 
1.38      www       508: sub user_crit_msg_raw {
1.201     raeburn   509:     my ($user,$domain,$subject,$message,$sendback,$toperm,$sentmessage,
1.212   ! raeburn   510:         $nosentstore,$recipid,$attachmenturl)=@_;
1.2       www       511: # Check if allowed missing
1.190     raeburn   512:     my ($status,$packed_message);
1.2       www       513:     my $msgid='undefined';
                    514:     unless (($message)&&($user)&&($domain)) { $status='empty'; };
1.131     www       515:     my $text=$message;
1.2       www       516:     my $homeserver=&Apache::lonnet::homeserver($user,$domain);
                    517:     if ($homeserver ne 'no_host') {
1.202     raeburn   518:        ($msgid,$packed_message)=&packagemsg($subject,$message,undef,undef,
1.212   ! raeburn   519:                                   $attachmenturl,undef,undef,undef,undef,undef,
        !           520:                                   undef,undef,$recipid);
1.190     raeburn   521:        if ($sendback) { $packed_message.='<sendback>true</sendback>'; }
1.210     albertel  522:        $status=&Apache::lonnet::cput('critical', {$msgid => $packed_message},
                    523: 				     $domain,$user);
1.159     raeburn   524:         if (defined($sentmessage)) {
1.190     raeburn   525:             $$sentmessage = $packed_message;
1.159     raeburn   526:         }
1.201     raeburn   527:         if (!$nosentstore) {
1.193     raeburn   528:             (undef,my $packed_message_no_citation) =
1.212   ! raeburn   529:             &packagemsg($subject,$message,undef,undef,$attachmenturl,$user,
        !           530:                         $domain,$msgid);
1.193     raeburn   531:             if ($status eq 'ok' || $status eq 'con_delayed') {
                    532:                 &store_sent_mail($msgid,$packed_message_no_citation);
                    533:             }
                    534:         }
1.2       www       535:     } else {
                    536:        $status='no_host';
                    537:     }
1.190     raeburn   538: 
1.53      www       539: # Notifications
1.186     www       540:     my %userenv = &Apache::loncommon::getemails($user,$domain);
1.53      www       541:     if ($userenv{'critnotification'}) {
1.131     www       542:       &sendnotification($userenv{'critnotification'},$user,$domain,$subject,1,
1.194     raeburn   543: 			$text,$msgid);
1.53      www       544:     }
1.132     www       545:     if ($toperm && $userenv{'permanentemail'}) {
                    546:       &sendnotification($userenv{'permanentemail'},$user,$domain,$subject,1,
1.194     raeburn   547: 			$text,$msgid);
1.132     www       548:     }
1.53      www       549: # Log this
1.2       www       550:     &Apache::lonnet::logthis(
1.4       www       551:       'Sending critical email '.$msgid.
1.2       www       552:       ', log status: '.
1.140     albertel  553:       &Apache::lonnet::log($env{'user.domain'},$env{'user.name'},
                    554:                          $env{'user.home'},
1.2       www       555:       'Sending critical '.$msgid.' to '.$user.' at '.$domain.' with status: '
1.4       www       556:       .$status));
1.2       www       557:     return $status;
                    558: }
                    559: 
1.38      www       560: # New routine that respects "forward" and calls old routine
                    561: 
1.58      bowersj2  562: =pod
                    563: 
1.212   ! raeburn   564: =item * B<user_crit_msg($user, $domain, $subject, $message, $sendback, $nosentstore,$recipid,$attachmenturl)>: 
1.201     raeburn   565:     Sends a critical message $message to the $user at $domain.  If $sendback
                    566:     is true,  a receipt will be sent to the current user when $user receives 
                    567:     the message.
1.58      bowersj2  568: 
1.183     albertel  569:     Additionally it will check if the user has a Forwarding address
                    570:     set, and send the message to that address instead
                    571: 
                    572:     returns 
                    573:       - in array context a list of results for each message that was sent
                    574:       - in scalar context a space seperated list of results for each 
                    575:            message sent
                    576: 
1.58      bowersj2  577: =cut
                    578: 
1.38      www       579: sub user_crit_msg {
1.201     raeburn   580:     my ($user,$domain,$subject,$message,$sendback,$toperm,$sentmessage,
1.212   ! raeburn   581:         $nosentstore,$recipid,$attachmenturl)=@_;
1.183     albertel  582:     my @status;
1.38      www       583:     my %userenv = &Apache::lonnet::get('environment',['msgforward'],
                    584:                                        $domain,$user);
                    585:     my $msgforward=$userenv{'msgforward'};
                    586:     if ($msgforward) {
1.183     albertel  587:        foreach my $addr (split(/\,/,$msgforward)) {
                    588: 	 my ($forwuser,$forwdomain)=split(/\:/,$addr);
                    589:          push(@status,
                    590: 	      &user_crit_msg_raw($forwuser,$forwdomain,$subject,$message,
1.202     raeburn   591: 				 $sendback,$toperm,$sentmessage,$nosentstore,
1.212   ! raeburn   592:                                  $recipid,$attachmenturl));
1.38      www       593:        }
                    594:     } else { 
1.183     albertel  595: 	push(@status,
                    596: 	     &user_crit_msg_raw($user,$domain,$subject,$message,$sendback,
1.212   ! raeburn   597: 				$toperm,$sentmessage,$nosentstore,$recipid,
        !           598:                                 $attachmenturl));
1.38      www       599:     }
1.183     albertel  600:     if (wantarray) {
                    601: 	return @status;
                    602:     }
                    603:     return join(' ',@status);
1.38      www       604: }
                    605: 
1.2       www       606: # =================================================== Critical message received
                    607: 
                    608: sub user_crit_received {
1.12      www       609:     my $msgid=shift;
                    610:     my %message=&Apache::lonnet::get('critical',[$msgid]);
1.52      www       611:     my %contents=&unpackagemsg($message{$msgid},1);
1.204     raeburn   612:     my $destname = $contents{'sendername'};
                    613:     my $destdom = $contents{'senderdomain'};
                    614:     if ($contents{'replytoaddr'}) {
                    615:         my ($repname,$repdom) = split(/:/,$contents{'replytoaddr'});
                    616:         if (&Apache::lonnet::homeserver($repname,$repdom) ne 'no_host') {
                    617:             $destname = $repname;
                    618:             $destdom = $repdom;    
                    619:         }
                    620:     }
1.24      www       621:     my $status='rec: '.($contents{'sendback'}?
1.204     raeburn   622:      &user_normal_msg($destname,$destdom,&mt('Receipt').': '.$env{'user.name'}.
                    623:                       ' '.&mt('at').' '.$env{'user.domain'}.', '.
                    624:                       $contents{'subject'},&mt('User').' '.$env{'user.name'}.
                    625:                       ' '.&mt('at').' '.$env{'user.domain'}.
                    626:                       ' acknowledged receipt of message'."\n".'   "'.
                    627:                       $contents{'subject'}.'"'."\n".&mt('dated').' '.
                    628:                       $contents{'time'}.".\n"
                    629:                       ):'no msg req');
1.5       www       630:     $status.=' trans: '.
1.12      www       631:      &Apache::lonnet::put(
                    632:      'nohist_email',{$contents{'msgid'} => $message{$msgid}});
1.5       www       633:     $status.=' del: '.
1.9       albertel  634:      &Apache::lonnet::del('critical',[$contents{'msgid'}]);
1.140     albertel  635:     &Apache::lonnet::log($env{'user.domain'},$env{'user.name'},
                    636:                          $env{'user.home'},'Received critical message '.
1.5       www       637:                          $contents{'msgid'}.
                    638:                          ', '.$status);
1.12      www       639:     return $status;
1.2       www       640: }
                    641: 
                    642: # ======================================================== Normal communication
                    643: 
1.38      www       644: sub user_normal_msg_raw {
1.132     www       645:     my ($user,$domain,$subject,$message,$citation,$baseurl,$attachmenturl,
1.191     raeburn   646:         $toperm,$currid,$newid,$sentmessage,$crsmsgid,$symb,$restitle,
1.202     raeburn   647:         $error,$nosentstore,$recipid)=@_;
1.2       www       648: # Check if allowed missing
1.173     albertel  649:     my ($status,$packed_message);
1.2       www       650:     my $msgid='undefined';
1.131     www       651:     my $text=$message;
1.2       www       652:     unless (($message)&&($user)&&($domain)) { $status='empty'; };
                    653:     my $homeserver=&Apache::lonnet::homeserver($user,$domain);
                    654:     if ($homeserver ne 'no_host') {
1.173     albertel  655:        ($msgid,$packed_message)=
                    656: 	                 &packagemsg($subject,$message,$citation,$baseurl,
1.174     raeburn   657:                                      $attachmenturl,$user,$domain,$currid,
1.202     raeburn   658:                                      undef,$crsmsgid,$symb,$error,$recipid);
1.174     raeburn   659: 
1.108     www       660: # Store in user folder
1.210     albertel  661:        $status=
                    662: 	   &Apache::lonnet::cput('nohist_email',{$msgid => $packed_message},
                    663: 				 $domain,$user);
1.108     www       664: # Save new message received time
1.40      www       665:        &Apache::lonnet::put
                    666:                          ('email_status',{'recnewemail'=>time},$domain,$user);
1.201     raeburn   667: # Into sent-mail folder if sent mail storage required
                    668:        if (!$nosentstore) {
1.190     raeburn   669:            (undef,my $packed_message_no_citation) =
                    670:                &packagemsg($subject,$message,undef,$baseurl,$attachmenturl,
1.191     raeburn   671:                            $user,$domain,$currid,undef,$crsmsgid,$symb,$error);
1.193     raeburn   672:            if ($status eq 'ok' || $status eq 'con_delayed') {
                    673:                &store_sent_mail($msgid,$packed_message_no_citation);
                    674:            }
1.156     raeburn   675:        }
1.201     raeburn   676:        if (ref($newid) eq 'SCALAR') {
1.196     www       677: 	   $$newid = $msgid;
                    678:        }
1.201     raeburn   679:        if (ref($sentmessage) eq 'SCALAR') {
1.196     www       680: 	   $$sentmessage = $packed_message;
                    681:        }
                    682: # Notifications
1.206     raeburn   683:        my %userenv = &Apache::loncommon::getemails($user,$domain);
1.196     www       684:        if ($userenv{'notification'}) {
                    685: 	   &sendnotification($userenv{'notification'},$user,$domain,$subject,0,
                    686: 			     $text,$msgid);
                    687:        }
                    688:        if ($toperm && $userenv{'permanentemail'}) {
                    689: 	   &sendnotification($userenv{'permanentemail'},$user,$domain,$subject,0,
                    690: 			     $text,$msgid);
                    691:        }
                    692:        &Apache::lonnet::log($env{'user.domain'},$env{'user.name'},
                    693: 			    $env{'user.home'},
                    694: 			    'Sending '.$msgid.' to '.$user.' at '.$domain.' with status: '.$status);
                    695:    } else {
1.2       www       696:        $status='no_host';
1.196     www       697:    }
1.2       www       698:     return $status;
                    699: }
1.38      www       700: 
                    701: # New routine that respects "forward" and calls old routine
                    702: 
1.58      bowersj2  703: =pod
                    704: 
1.191     raeburn   705: =item * B<user_normal_msg($user, $domain, $subject, $message, $citation,
1.201     raeburn   706:        $baseurl, $attachmenturl, $toperm, $sentmessage, $symb, $restitle,
1.202     raeburn   707:        $error,$nosentstore,$recipid)>:
1.191     raeburn   708:  Sends a message to the  $user at $domain, with subject $subject and message $message.
1.58      bowersj2  709: 
1.199     raeburn   710:     Additionally it will check if the user has a Forwarding address
                    711:     set, and send the message to that address instead
                    712: 
                    713:     returns
                    714:       - in array context a list of results for each message that was sent
                    715:       - in scalar context a space seperated list of results for each
                    716:            message sent
                    717: 
1.58      bowersj2  718: =cut
                    719: 
1.38      www       720: sub user_normal_msg {
1.132     www       721:     my ($user,$domain,$subject,$message,$citation,$baseurl,$attachmenturl,
1.202     raeburn   722: 	$toperm,$sentmessage,$symb,$restitle,$error,$nosentstore,$recipid)=@_;
1.199     raeburn   723:     my @status;
1.38      www       724:     my %userenv = &Apache::lonnet::get('environment',['msgforward'],
                    725:                                        $domain,$user);
                    726:     my $msgforward=$userenv{'msgforward'};
                    727:     if ($msgforward) {
1.171     banghart  728:         foreach (split(/\,/,$msgforward)) {
1.172     albertel  729: 	    my ($forwuser,$forwdomain)=split(/\:/,$_);
1.199     raeburn   730: 	    push(@status,
1.171     banghart  731: 	        &user_normal_msg_raw($forwuser,$forwdomain,$subject,$message,
1.172     albertel  732: 				     $citation,$baseurl,$attachmenturl,$toperm,
1.201     raeburn   733: 				     undef,undef,$sentmessage,undef,$symb,
1.202     raeburn   734:                                      $restitle,$error,$nosentstore,$recipid));
1.171     banghart  735:         }
1.191     raeburn   736:     } else {
1.199     raeburn   737: 	push(@status,&user_normal_msg_raw($user,$domain,$subject,$message,
1.172     albertel  738: 				     $citation,$baseurl,$attachmenturl,$toperm,
1.201     raeburn   739: 				     undef,undef,$sentmessage,undef,$symb,
1.202     raeburn   740:                                      $restitle,$error,$nosentstore,$recipid));
1.199     raeburn   741:     }
                    742:     if (wantarray) {
                    743:         return @status;
1.38      www       744:     }
1.199     raeburn   745:     return join(' ',@status);
1.38      www       746: }
                    747: 
1.201     raeburn   748: sub process_sent_mail {
1.210     albertel  749:     my ($msgsubj,$subj_prefix,$numsent,$stamp,$msgname,$msgdom,$msgcount,$context,$pid,$savemsg,$recusers,$recudoms,$baseurl,$attachmenturl,$symb,$error,$senderuname,$senderdom) = @_;
1.201     raeburn   750:     my $sentsubj;
                    751:     if ($numsent > 1) {
                    752:         $sentsubj = $subj_prefix.' ('.$numsent.' sent) '.$msgsubj;
1.205     raeburn   753:     } else {
                    754:         if ($subj_prefix) {
                    755:             $sentsubj = $subj_prefix.' ';
                    756:         }
                    757:         $sentsubj .= $msgsubj;
1.201     raeburn   758:     }
                    759:     $sentsubj = &HTML::Entities::encode($sentsubj,'<>&"');
                    760:     my $sentmsgid = 
                    761:         &buildmsgid($stamp,$sentsubj,$msgname,$msgdom,$msgcount,$context,$pid);
                    762:     (undef,my $sentmessage) =
                    763:         &packagemsg($msgsubj,$savemsg,undef,$baseurl,$attachmenturl,$recusers,
                    764:                     $recudoms,$sentmsgid,undef,undef,$symb,$error);
                    765:     my $status = &store_sent_mail($sentmsgid,$sentmessage,$senderuname,
1.210     albertel  766:                                   $senderdom);
1.201     raeburn   767:     return $status;
                    768: }
                    769: 
1.156     raeburn   770: sub store_sent_mail {
1.210     albertel  771:     my ($msgid,$message,$senderuname,$senderdom) = @_;
1.201     raeburn   772:     if ($senderuname eq '') {
                    773:         $senderuname = $env{'user.name'};
                    774:     }
                    775:     if ($senderdom eq '') {
                    776:         $senderdom = $env{'user.domain'};
                    777:     }
1.210     albertel  778:     my $status =' '.&Apache::lonnet::cput('nohist_email_sent',
                    779: 					  {$msgid => $message},
                    780: 					  $senderdom,$senderuname);
1.156     raeburn   781:     return $status;
                    782: }
1.2       www       783: 
1.202     raeburn   784: sub store_recipients {
                    785:     my ($subject,$sendername,$senderdom,$reciphash) = @_;
                    786:     my $context = &get_course_context();
1.203     albertel  787:     my $now = time();
1.202     raeburn   788:     my $msgcount = &get_uniq();
                    789:     my $recipid =
                    790:         &buildmsgid($now,$subject,$sendername,$senderdom,$msgcount,$context,$$);
                    791:     my %recipinfo = (
                    792:                          $recipid => $reciphash,
                    793:                     );
                    794:     my $status = &Apache::lonnet::put('nohist_emailrecip',\%recipinfo,
                    795:                                       $senderdom,$sendername); 
                    796:     if ($status eq 'ok') {
                    797:         return ($recipid,$status);
                    798:     } else {
                    799:         return (undef,$status);
                    800:     }
                    801: }
                    802: 
1.106     www       803: # =============================================================== Folder suffix
                    804: 
                    805: sub foldersuffix {
                    806:     my $folder=shift;
                    807:     unless ($folder) { return ''; }
1.189     raeburn   808:     my $suffix;
                    809:     my %folderhash = &get_user_folders($folder);
                    810:     if (ref($folderhash{$folder}) eq 'HASH') {
                    811:         $suffix = '_'.&escape($folderhash{$folder}{'id'});
                    812:     } else {
                    813:         $suffix = '_'.&escape($folder);
                    814:     }
                    815:     return $suffix;
                    816: }
                    817: 
                    818: # ========================================================= User-defined folders 
                    819: 
                    820: sub get_user_folders {
                    821:     my ($folder) = @_;
                    822:     my %userfolders = 
                    823:           &Apache::lonnet::dump('email_folders',undef,undef,$folder);
                    824:     my $lock = "\0".'lock_counter'; # locks db while counter incremented
                    825:     my $counter = "\0".'idcount';   # used in suffix for email db files
                    826:     if (defined($userfolders{$lock})) {
                    827:         delete($userfolders{$lock});
                    828:     }
                    829:     if (defined($userfolders{$counter})) {
                    830:         delete($userfolders{$counter});
                    831:     }
                    832:     return %userfolders;
1.106     www       833: }
                    834: 
1.197     albertel  835: sub secapply {
                    836:     my $rec=shift;
                    837:     my $defaultflag=shift;
                    838:     $rec=~s/\s+//g;
                    839:     $rec=~s/\@/\:/g;
                    840:     my ($adr,$sections_or_groups)=($rec=~/^([^\(]+)\(([^\)]+)\)/);
                    841:     if ($sections_or_groups) {
                    842: 	foreach my $item (split(/\;/,$sections_or_groups)) {
                    843:             if (($item eq $env{'request.course.sec'}) ||
                    844:                 ($defaultflag && ($item eq '*'))) {
                    845:                 return $adr; 
                    846:             } elsif ($env{'request.course.groups'}) {
                    847:                 my @usersgroups = split(/:/,$env{'request.course.groups'});
                    848:                 if (grep(/^\Q$item\E$/,@usersgroups)) {
                    849:                     return $adr;
                    850:                 }
                    851:             } 
                    852:         }
                    853:     } else {
                    854:        return $rec;
                    855:     }
                    856:     return '';
                    857: }
                    858: 
                    859: =pod 
                    860: 
1.199     raeburn   861: =item * B<decide_receiver($feedurl,$author,$question,$course,$policy,$defaultflag)>:
1.197     albertel  862: 
                    863: Arguments
                    864:   $feedurl - /res/ url of resource (only need if $author is true)
                    865:   $author,$question,$course,$policy - all true/false parameters
                    866:     if true will attempt to find the addresses of user that should receive
                    867:     this type of feedback (author - feedback to author of resource $feedurl,
                    868:     $question 'Resource Content Questions', $course 'Course Content Question',
                    869:     $policy 'Course Policy')
                    870:     (Additionally it also checks $env for whether the corresponding form.<name>
                    871:     element exists, for ease of use in a html response context)
                    872:    
                    873:   $defaultflag - (internal should be left blank) if true gather addresses 
                    874:                  that aren't for a section even if I have a section
                    875:                  (used for reccursion internally, first we look for
                    876:                  addresses for our specific section then we recurse
                    877:                  and look for non section addresses)
                    878: 
                    879: Returns
                    880:   $typestyle - string of html text, describing what addresses were found
                    881:   %to - a hash, which keys are addresses of users to send messages to
                    882:         the keys will look like   name:domain
                    883: 
                    884: =cut
                    885: 
                    886: sub decide_receiver {
                    887:     my ($feedurl,$author,$question,$course,$policy,$defaultflag) = @_;
                    888:     &Apache::lonenc::check_decrypt(\$feedurl);
                    889:     my $typestyle='';
                    890:     my %to=();
                    891:     if ($env{'form.discuss'} eq 'author' ||$author) {
                    892: 	$typestyle.='Submitting as Author Feedback<br />';
                    893: 	$feedurl=~ m{^/res/($LONCAPA::domain_re)/($LONCAPA::username_re)/};
                    894: 	$to{$2.':'.$1}=1;
                    895:     }
                    896:     my $cid = $env{'request.course.id'};
                    897:     if ($env{'form.discuss'} eq 'question' ||$question) {
                    898: 	$typestyle.=&mt('Submitting as Question').'<br />';
                    899: 	foreach my $item (split(/\,/,$env{'course.'.$cid.'.question.email'})) {
                    900: 	    my $rec=&secapply($item,$defaultflag);
                    901: 	    if ($rec) { $to{$rec}=1; }
                    902: 	} 
                    903:     }
                    904:     if ($env{'form.discuss'} eq 'course' ||$course) {
                    905: 	$typestyle.=&mt('Submitting as Comment').'<br />';
                    906: 	foreach my $item (split(/\,/,$env{'course.'.$cid.'.comment.email'})) {
                    907: 	    my $rec=&secapply($item,$defaultflag);
                    908: 	    if ($rec) { $to{$rec}=1; }
                    909: 	} 
                    910:     }
                    911:     if ($env{'form.discuss'} eq 'policy' ||$policy) {
                    912: 	$typestyle.=&mt('Submitting as Policy Feedback').'<br />';
                    913: 	foreach my $item (split(/\,/,$env{'course.'.$cid.'.policy.email'})) {
                    914: 	    my $rec=&secapply($item,$defaultflag);
                    915: 	    if ($rec) { $to{$rec}=1; }
                    916: 	} 
                    917:     }
                    918:     if ((scalar(%to) eq '0') && (!$defaultflag)) {
                    919: 	($typestyle,%to)=
                    920: 	    &decide_receiver($feedurl,$author,$question,$course,$policy,1);
                    921:     }
                    922:     return ($typestyle,%to);
                    923: }
                    924: 
1.199     raeburn   925: =pod
                    926: 
                    927: =back
                    928: 
                    929: =cut
                    930: 
1.180     albertel  931: 1;
1.1       www       932: __END__
                    933: 

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