# The LearningOnline Network with CAPA
# Routines for messaging
#
# $Id: lonmsg.pm,v 1.78 2004/01/15 03:53:12 www Exp $
#
# Copyright Michigan State University Board of Trustees
#
# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
#
# LON-CAPA is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# LON-CAPA is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with LON-CAPA; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
# /home/httpd/html/adm/gpl.txt
#
# http://www.lon-capa.org/
#


package Apache::lonmsg;

=pod

=head1 NAME

Apache::lonmsg: supports internal messaging

=head1 SYNOPSIS

lonmsg provides routines for sending messages, receiving messages, and
a handler to allow users to read, send, and delete messages.

=head1 OVERVIEW

=head2 Messaging Overview

X<messages>LON-CAPA provides an internal messaging system similar to
email, but customized for LON-CAPA's usage. LON-CAPA implements its
own messaging system, rather then building on top of email, because of
the features LON-CAPA messages can offer that conventional e-mail can
not:

=over 4

=item * B<Critical messages>: A message the recipient B<must>
acknowlegde receipt of before they are allowed to continue using the
system, preventing a user from claiming they never got a message

=item * B<Receipts>: LON-CAPA can reliably send reciepts informing the
sender that it has been read; again, useful for preventing students
from claiming they did not see a message. (While conventional e-mail
has some reciept support, it's sporadic, e-mail client-specific, and
generally the receiver can opt to not send one, making it useless in
this case.)

=item * B<Context>: LON-CAPA knows about the sender, such as where
they are in a course. When a student mails an instructor asking for
help on the problem, the instructor receives not just the student's
question, but all submissions the student has made up to that point,
the user's rendering of the problem, and the complete view the student
saw of the resource, including discussion up to that point. Finally,
the instructor is reading all of this inside of LON-CAPA, not their
email program, so they have full access to LON-CAPA's grading
interface, or other features they may wish to use in response to the
student's query.

=back

Users can ask LON-CAPA to forward messages to conventional e-mail
addresses on their B<PREF> screen, but generally, LON-CAPA messages
are much more useful then traditional email can be made to be, even
with HTML support.

Right now, this document will cover just how to send a message, since
it is likely you will not need to programmatically read messages,
since lonmsg already implements that functionality.

=head1 FUNCTIONS

=over 4

=cut

use strict;
use Apache::lonnet();
use vars qw($msgcount);
use HTML::TokeParser();
use Apache::Constants qw(:common);
use Apache::loncommon();
use Apache::lontexconvert();
use HTML::Entities();
use Mail::Send;
use Apache::lonlocal;

# Querystring component with sorting type
my $sqs;

# ===================================================================== Package

sub packagemsg {
    my ($subject,$message,$citation,$baseurl,$attachmenturl)=@_;
    $message =&HTML::Entities::encode($message);
    $citation=&HTML::Entities::encode($citation);
    $subject =&HTML::Entities::encode($subject);
    #remove machine specification
    $baseurl =~ s|^http://[^/]+/|/|;
    $baseurl =&HTML::Entities::encode($baseurl);
    #remove machine specification
    $attachmenturl =~ s|^http://[^/]+/|/|;
    $attachmenturl =&HTML::Entities::encode($attachmenturl);

    my $now=time;
    $msgcount++;
    my $partsubj=$subject;
    $partsubj=&Apache::lonnet::escape($partsubj);
    my $msgid=&Apache::lonnet::escape(
           $now.':'.$partsubj.':'.$ENV{'user.name'}.':'.
           $ENV{'user.domain'}.':'.$msgcount.':'.$$);
    my $result='<sendername>'.$ENV{'user.name'}.'</sendername>'.
           '<senderdomain>'.$ENV{'user.domain'}.'</senderdomain>'.
           '<subject>'.$subject.'</subject>'.
	   '<time>'.&Apache::lonlocal::locallocaltime($now).'</time>'.
	   '<servername>'.$ENV{'SERVER_NAME'}.'</servername>'.
           '<host>'.$ENV{'HTTP_HOST'}.'</host>'.
	   '<client>'.$ENV{'REMOTE_ADDR'}.'</client>'.
	   '<browsertype>'.$ENV{'browser.type'}.'</browsertype>'.
	   '<browseros>'.$ENV{'browser.os'}.'</browseros>'.
	   '<browserversion>'.$ENV{'browser.version'}.'</browserversion>'.
           '<browsermathml>'.$ENV{'browser.mathml'}.'</browsermathml>'.
	   '<browserraw>'.$ENV{'HTTP_USER_AGENT'}.'</browserraw>'.
	   '<courseid>'.$ENV{'request.course.id'}.'</courseid>'.
	   '<role>'.$ENV{'request.role'}.'</role>'.
	   '<resource>'.$ENV{'request.filename'}.'</resource>'.
           '<msgid>'.$msgid.'</msgid>'.
	   '<message>'.$message.'</message>';
    if (defined($citation)) {
	$result.='<citation>'.$citation.'</citation>';
    }
    if (defined($baseurl)) {
	$result.= '<baseurl>'.$baseurl.'</baseurl>';
    }
    if (defined($attachmenturl)) {
	$result.= '<attachmenturl>'.$attachmenturl.'</attachmenturl>';
    }
    return $msgid,$result;
}

# ================================================== Unpack message into a hash

sub unpackagemsg {
    my ($message,$notoken)=@_;
    my %content=();
    my $parser=HTML::TokeParser->new(\$message);
    my $token;
    while ($token=$parser->get_token) {
       if ($token->[0] eq 'S') {
	   my $entry=$token->[1];
           my $value=$parser->get_text('/'.$entry);
           $content{$entry}=$value;
       }
    }
    if ($content{'attachmenturl'}) {
       my ($fname,$ft)=($content{'attachmenturl'}=~/\/(\w+)\.(\w+)$/);
       if ($notoken) {
	   $content{'message'}.='<p>'.&mt('Attachment').': <tt>'.$fname.'.'.$ft.'</tt>';
       } else {
	   $content{'message'}.='<p>'.&mt('Attachment').': <a href="'.
	       &Apache::lonnet::tokenwrapper($content{'attachmenturl'}).
	       '"><tt>'.$fname.'.'.$ft.'</tt></a>';
       }
    }
    return %content;
}

# ======================================================= Get info out of msgid

sub unpackmsgid {
    my $msgid=&Apache::lonnet::unescape(shift);
    my ($sendtime,$shortsubj,$fromname,$fromdomain)=split(/\:/,
                          &Apache::lonnet::unescape($msgid));
    my %status=&Apache::lonnet::get('email_status',[$msgid]);
    if ($status{$msgid}=~/^error\:/) { $status{$msgid}=''; }
    unless ($status{$msgid}) { $status{$msgid}='new'; }
    return ($sendtime,$shortsubj,$fromname,$fromdomain,$status{$msgid});
} 


sub sendemail {
    my ($to,$subject,$body)=@_;
    $body=
    "*** ".&mt('This is an automatic message generated by the LON-CAPA system.')."\n".
    "*** ".&mt('Please do not reply to this address.')."\n\n".$body;
    my $msg = new Mail::Send;
    $msg->to($to);
    $msg->subject('[LON-CAPA] '.$subject);
    if (my $fh = $msg->open('smtp',Server => 'localhost')) {
	print $fh $body;
	$fh->close;
    }
}

# ==================================================== Send notification emails

sub sendnotification {
    my ($to,$touname,$toudom,$subj,$crit)=@_;
    my $sender=$ENV{'environment.firstname'}.' '.$ENV{'environment.lastname'};
    my $critical=($crit?' critical':'');
    my $url='http://'.
      $Apache::lonnet::hostname{&Apache::lonnet::homeserver($touname,$toudom)}.
      '/adm/email?username='.$touname.'&domain='.$toudom;
    my $body=(<<ENDMSG);
You received a$critical message from $sender in LON-CAPA. The subject is

 $subj

Use

 $url

to access this message.
ENDMSG
    &sendemail($to,'New'.$critical.' message from '.$sender,$body);
}
# ============================================================= Check for email

sub newmail {
    if ((time-$ENV{'user.mailcheck.time'})>300) {
        my %what=&Apache::lonnet::get('email_status',['recnewemail']);
        &Apache::lonnet::appenv('user.mailcheck.time'=>time);
        if ($what{'recnewemail'}>0) { return 1; }
    }
    return 0;
}

# =============================== Automated message to the author of a resource

=pod

=item * B<author_res_msg($filename, $message)>: Sends message $message to the owner
    of the resource with the URI $filename.

=cut

sub author_res_msg {
    my ($filename,$message)=@_;
    unless ($message) { return 'empty'; }
    $filename=&Apache::lonnet::declutter($filename);
    my ($domain,$author,@dummy)=split(/\//,$filename);
    my $homeserver=&Apache::lonnet::homeserver($author,$domain);
    if ($homeserver ne 'no_host') {
       my $id=unpack("%32C*",$message);
       my $msgid;
       ($msgid,$message)=&packagemsg($filename,$message);
       return &Apache::lonnet::reply('put:'.$domain.':'.$author.
         ':nohist_res_msgs:'.
          &Apache::lonnet::escape($filename.'_'.$id).'='.
          &Apache::lonnet::escape($message),$homeserver);
    }
    return 'no_host';
}

# =========================================== Retrieve author resource messages

sub retrieve_author_res_msg {
    my $url=shift;
    $url=&Apache::lonnet::declutter($url);
    my ($domain,$author)=($url=~/^(\w+)\/(\w+)\//);
    my %errormsgs=&Apache::lonnet::dump('nohist_res_msgs',$domain,$author);
    my $msgs='';
    foreach (keys %errormsgs) {
	if ($_=~/^\Q$url\E\_\d+$/) {
	    my %content=&unpackagemsg($errormsgs{$_});
	    $msgs.='<p><img src="/adm/lonMisc/bomb.gif" /><b>'.
		$content{'time'}.'</b>: '.$content{'message'}.
		'<br /></p>';
	}
    } 
    return $msgs;     
}


# =============================== Delete all author messages related to one URL

sub del_url_author_res_msg {
    my $url=shift;
    $url=&Apache::lonnet::declutter($url);
    my ($domain,$author)=($url=~/^(\w+)\/(\w+)\//);
    my @delmsgs=();
    foreach (&Apache::lonnet::getkeys('nohist_res_msgs',$domain,$author)) {
	if ($_=~/^\Q$url\E\_\d+$/) {
	    push (@delmsgs,$_);
	}
    }
    return &Apache::lonnet::del('nohist_res_msgs',\@delmsgs,$domain,$author);
}

# ================= Return hash with URLs for which there is a resource message

sub all_url_author_res_msg {
    my ($author,$domain)=@_;
    my %returnhash=();
    foreach (&Apache::lonnet::getkeys('nohist_res_msgs',$domain,$author)) {
	$_=~/^(.+)\_\d+/;
	$returnhash{$1}=1;
    }
    return %returnhash;
}

# ================================================== Critical message to a user

sub user_crit_msg_raw {
    my ($user,$domain,$subject,$message,$sendback)=@_;
# Check if allowed missing
    my $status='';
    my $msgid='undefined';
    unless (($message)&&($user)&&($domain)) { $status='empty'; };
    my $homeserver=&Apache::lonnet::homeserver($user,$domain);
    if ($homeserver ne 'no_host') {
       ($msgid,$message)=&packagemsg($subject,$message);
       if ($sendback) { $message.='<sendback>true</sendback>'; }
       $status=&Apache::lonnet::critical(
           'put:'.$domain.':'.$user.':critical:'.
           &Apache::lonnet::escape($msgid).'='.
           &Apache::lonnet::escape($message),$homeserver);
       if ($ENV{'request.course.id'}) {
          &user_normal_msg_raw(
            $ENV{'course.'.$ENV{'request.course.id'}.'.num'},
            $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
            'Critical ['.$user.':'.$domain.']',
	    $message);
       }
    } else {
       $status='no_host';
    }
# Notifications
    my %userenv = &Apache::lonnet::get('environment',['critnotification'],
                                       $domain,$user);
    if ($userenv{'critnotification'}) {
      &sendnotification($userenv{'critnotification'},$user,$domain,$subject,1);
    }
# Log this
    &Apache::lonnet::logthis(
      'Sending critical email '.$msgid.
      ', log status: '.
      &Apache::lonnet::log($ENV{'user.domain'},$ENV{'user.name'},
                         $ENV{'user.home'},
      'Sending critical '.$msgid.' to '.$user.' at '.$domain.' with status: '
      .$status));
    return $status;
}

# New routine that respects "forward" and calls old routine

=pod

=item * B<user_crit_msg($user, $domain, $subject, $message, $sendback)>: Sends
    a critical message $message to the $user at $domain. If $sendback is true,
    a reciept will be sent to the current user when $user recieves the message.

=cut

sub user_crit_msg {
    my ($user,$domain,$subject,$message,$sendback)=@_;
    my $status='';
    my %userenv = &Apache::lonnet::get('environment',['msgforward'],
                                       $domain,$user);
    my $msgforward=$userenv{'msgforward'};
    if ($msgforward) {
       foreach (split(/\,/,$msgforward)) {
	 my ($forwuser,$forwdomain)=split(/\:/,$_);
         $status.=
	   &user_crit_msg_raw($forwuser,$forwdomain,$subject,$message,
                $sendback).' ';
       }
    } else { 
	$status=&user_crit_msg_raw($user,$domain,$subject,$message,$sendback);
    }
    return $status;
}

# =================================================== Critical message received

sub user_crit_received {
    my $msgid=shift;
    my %message=&Apache::lonnet::get('critical',[$msgid]);
    my %contents=&unpackagemsg($message{$msgid},1);
    my $status='rec: '.($contents{'sendback'}?
     &user_normal_msg($contents{'sendername'},$contents{'senderdomain'},
                     &mt('Receipt').': '.$ENV{'user.name'}.' at '.$ENV{'user.domain'},
                     &mt('User').' '.$ENV{'user.name'}.' '.&mt('at').' '.$ENV{'user.domain'}.
                     ' acknowledged receipt of message'."\n".'   "'.
                     $contents{'subject'}.'"'."\n".&mt('dated').' '.
                     $contents{'time'}.".\n"
                     ):'no msg req');
    $status.=' trans: '.
     &Apache::lonnet::put(
     'nohist_email',{$contents{'msgid'} => $message{$msgid}});
    $status.=' del: '.
     &Apache::lonnet::del('critical',[$contents{'msgid'}]);
    &Apache::lonnet::log($ENV{'user.domain'},$ENV{'user.name'},
                         $ENV{'user.home'},'Received critical message '.
                         $contents{'msgid'}.
                         ', '.$status);
    return $status;
}

# ======================================================== Normal communication

sub user_normal_msg_raw {
    my ($user,$domain,$subject,$message,$citation,$baseurl,$attachmenturl)=@_;
# Check if allowed missing
    my $status='';
    my $msgid='undefined';
    unless (($message)&&($user)&&($domain)) { $status='empty'; };
    my $homeserver=&Apache::lonnet::homeserver($user,$domain);
    if ($homeserver ne 'no_host') {
       ($msgid,$message)=&packagemsg($subject,$message,$citation,$baseurl,
                                     $attachmenturl);
       $status=&Apache::lonnet::critical(
           'put:'.$domain.':'.$user.':nohist_email:'.
           &Apache::lonnet::escape($msgid).'='.
           &Apache::lonnet::escape($message),$homeserver);
       &Apache::lonnet::put
                         ('email_status',{'recnewemail'=>time},$domain,$user);
    } else {
       $status='no_host';
    }
# Notifications
    my %userenv = &Apache::lonnet::get('environment',['notification'],
                                       $domain,$user);
    if ($userenv{'notification'}) {
	&sendnotification($userenv{'notification'},$user,$domain,$subject,0);
    }
    &Apache::lonnet::log($ENV{'user.domain'},$ENV{'user.name'},
                         $ENV{'user.home'},
      'Sending '.$msgid.' to '.$user.' at '.$domain.' with status: '.$status);
    return $status;
}

# New routine that respects "forward" and calls old routine

=pod

=item * B<user_normal_msg($user, $domain, $subject, $message,
    $citation, $baseurl, $attachmenturl)>: Sends a message to the
    $user at $domain, with subject $subject and message $message.

=cut

sub user_normal_msg {
    my ($user,$domain,$subject,$message,$citation,$baseurl,$attachmenturl)=@_;
    my $status='';
    my %userenv = &Apache::lonnet::get('environment',['msgforward'],
                                       $domain,$user);
    my $msgforward=$userenv{'msgforward'};
    if ($msgforward) {
       foreach (split(/\,/,$msgforward)) {
	 my ($forwuser,$forwdomain)=split(/\:/,$_);
         $status.=
	  &user_normal_msg_raw($forwuser,$forwdomain,$subject,$message,
			       $citation,$baseurl,$attachmenturl).' ';
       }
    } else { 
	$status=&user_normal_msg_raw($user,$domain,$subject,$message,
				     $citation,$baseurl,$attachmenturl);
    }
    return $status;
}


# =============================================================== Status Change

sub statuschange {
    my ($msgid,$newstatus)=@_;
    my %status=&Apache::lonnet::get('email_status',[$msgid]);
    if ($status{$msgid}=~/^error\:/) { $status{$msgid}=''; }
    unless ($status{$msgid}) { $status{$msgid}='new'; }
    unless (($status{$msgid} eq 'replied') || 
            ($status{$msgid} eq 'forwarded')) {
	&Apache::lonnet::put('email_status',{$msgid => $newstatus});
    }
    if (($newstatus eq 'deleted') || ($newstatus eq 'new')) {
	&Apache::lonnet::put('email_status',{$msgid => $newstatus});
    }
}

# ======================================================= Display a course list

sub discourse {
    my $r=shift;
    my %courselist=&Apache::lonnet::dump(
                   'classlist',
		   $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
		   $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
    my $now=time;
    my %lt=&Apache::lonlocal::texthash('cfa' => 'Check for All',
            'cfs' => 'Check for Section/Group',
            'cfn' => 'Check for None');
    $r->print(<<ENDDISHEADER);
<input type=hidden name=sendmode value=group>
<script>
    function checkall() {
	for (i=0; i<document.forms.compemail.elements.length; i++) {
            if 
          (document.forms.compemail.elements[i].name.indexOf('send_to_')==0) {
	      document.forms.compemail.elements[i].checked=true;
            }
        }
    }

    function checksec() {
	for (i=0; i<document.forms.compemail.elements.length; i++) {
            if 
          (document.forms.compemail.elements[i].name.indexOf
           ('send_to_&&&'+document.forms.compemail.chksec.value)==0) {
	      document.forms.compemail.elements[i].checked=true;
            }
        }
    }

    function uncheckall() {
	for (i=0; i<document.forms.compemail.elements.length; i++) {
            if 
          (document.forms.compemail.elements[i].name.indexOf('send_to_')==0) {
	      document.forms.compemail.elements[i].checked=false;
            }
        }
    }
</script>
<input type=button onClick="checkall()" value="$lt{'cfa'}">&nbsp;
<input type=button onClick="checksec()" value="$lt{'cfs'}">
<input type=text size=5 name=chksec>&nbsp;
<input type=button onClick="uncheckall()" value="$lt{'cfn'}">
<p>
ENDDISHEADER
    my %coursepersonnel=
       &Apache::lonnet::get_course_adv_roles();
    foreach my $role (sort keys %coursepersonnel) {
       foreach (split(/\,/,$coursepersonnel{$role})) {
	   my ($puname,$pudom)=split(/\:/,$_);
	   $r->print(
             '<br /><input type="checkbox" name="send_to_&&&&&&_'.
             $puname.':'.$pudom.'" /> '.
		     &Apache::loncommon::plainname($puname,
                          $pudom).' ('.$_.'), <i>'.$role.'</i>');
	}
    }

    foreach (sort keys %courselist) {
        my ($end,$start)=split(/\:/,$courselist{$_});
        my $active=1;
        if (($end) && ($now>$end)) { $active=0; }
        if ($active) {
           my ($sname,$sdom)=split(/\:/,$_);
           my %reply=&Apache::lonnet::get('environment',
              ['firstname','middlename','lastname','generation'],
              $sdom,$sname);
           my $section=&Apache::lonnet::usection
	       ($sdom,$sname,$ENV{'request.course.id'});
           $r->print(
        '<br><input type=checkbox name="send_to_&&&'.$section.'&&&_'.$_.'"> '.
		      $reply{'firstname'}.' '. 
                      $reply{'middlename'}.' '.
                      $reply{'lastname'}.' '.
                      $reply{'generation'}.
                      ' ('.$_.') '.$section);
        } 
    }
}

# ==================================================== Display Critical Message

sub discrit {
    my $r=shift;
    my $header = '<h1><font color=red>'.&mt('Critical Messages').'</font></h1>'.
        '<form action=/adm/email method=post>'.
        '<input type=hidden name=confirm value=true>';
    my %what=&Apache::lonnet::dump('critical');
    my $result = '';
    foreach (sort keys %what) {
        my %content=&unpackagemsg($what{$_});
        next if ($content{'senderdomain'} eq '');
        $content{'message'}=~s/\n/\<br\>/g;
        $result.='<hr>'.&mt('From').': <b>'.
&Apache::loncommon::aboutmewrapper(
 &Apache::loncommon::plainname($content{'sendername'},$content{'senderdomain'}),$content{'sendername'},$content{'senderdomain'}).'</b> ('.
$content{'sendername'}.'@'.
            $content{'senderdomain'}.') '.$content{'time'}.
            '<br>'.&mt('Subject').': '.$content{'subject'}.
            '<br><blockquote>'.
              &Apache::lontexconvert::msgtexconverted($content{'message'}).
            '</blockquote>'.
            '<input type=submit name="rec_'.$_.'" value="'.&mt('Confirm Receipt').'">'.
            '<input type=submit name="reprec_'.$_.'" '.
                  'value="'.&mt('Confirm Receipt and Reply').'">';
    }
    # Check to see if there were any messages.
    if ($result eq '') {
        $result = "<h2>".&mt('You have no critical messages.')."</h2>".
	    '<a href="/adm/roles">'.&mt('Select a course').'</a>';
    } else {
        $r->print($header);
    }
    $r->print($result);
    $r->print('<input type=hidden name="displayedcrit" value="true"></form>');
}

# =============================================================== Compose reply

sub comprep {
    my ($r,$msgid)=@_;
      my %message=&Apache::lonnet::get('nohist_email',[$msgid]);
      my %content=&unpackagemsg($message{$msgid},1);
      my $quotemsg='> '.$content{'message'};
      $quotemsg=~s/\r/\n/g;
      $quotemsg=~s/\f/\n/g;
      $quotemsg=~s/\n+/\n\> /g;
      my $torepl=&Apache::loncommon::aboutmewrapper(
 &Apache::loncommon::plainname($content{'sendername'},$content{'senderdomain'}),$content{'sendername'},$content{'senderdomain'}).' ('.
$content{'sendername'}.'@'.
            $content{'senderdomain'}.')';
      my $subject=&mt('Re').': '.$content{'subject'};
      my $dispcrit='';
      if (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'})) {
	 my $crithelp = Apache::loncommon::help_open_topic("Course_Critical_Message");
         $dispcrit=
 '<input type=checkbox name=critmsg> '.&mt('Send as critical message').' ' . $crithelp . 
 '<br>'.
 '<input type=checkbox name=sendbck> '.&mt('Send as critical message').' ' .
 &mt('and return receipt') . $crithelp . '<p>';
      }
    my %lt=&Apache::lonlocal::texthash(
				   'to' => 'To',
				   'sb' => 'Subject',
				   'sr' => 'Send Reply',
				   'ca' => 'Cancel'
				   );
      $r->print(<<"ENDREPLY");
<form action="/adm/email" method="post">
<input type="hidden" name="sendreply" value="$msgid">
$lt{'to'}: $torepl<br />
$lt{'sb'}: <input type="text" size=50 name="subject" value="$subject"><p>
<textarea name="message" cols="84" rows="10" wrap="hard">
$quotemsg
</textarea></p><br />
$dispcrit
<input type="submit" name="send" value="$lt{'sr'}" />
<input type="submit" name="cancel" value="$lt{'ca'}"/ >
</form>
ENDREPLY
}

sub sortedmessages {
    my @messages = &Apache::lonnet::getkeys('nohist_email');
    #unpack the varibles and repack into temp for sorting
    my @temp;
    foreach (@messages) {
	my $msgid=&Apache::lonnet::escape($_);
	my ($sendtime,$shortsubj,$fromname,$fromdomain,$status)=
	    &Apache::lonmsg::unpackmsgid($msgid);
	my @temp1 = ($sendtime,$shortsubj,$fromname,$fromdomain,$status,
		     $msgid);
	push @temp ,\@temp1;
    }
    #default sort
    @temp = sort  {$a->[0] <=> $b->[0]} @temp;    
    if ($ENV{'form.sortedby'} eq "date"){
        @temp = sort  {$a->[0] <=> $b->[0]} @temp;    
    }
    if ($ENV{'form.sortedby'} eq "revdate"){
    	@temp = sort  {$b->[0] <=> $a->[0]} @temp; 
    }
    if ($ENV{'form.sortedby'} eq "user"){
	@temp = sort  {lc($a->[2]) cmp lc($b->[2])} @temp;
    }
    if ($ENV{'form.sortedby'} eq "revuser"){
	@temp = sort  {lc($b->[2]) cmp lc($a->[2])} @temp;
    }
    if ($ENV{'form.sortedby'} eq "domain"){
        @temp = sort  {$a->[3] cmp $b->[3]} @temp;
    }
    if ($ENV{'form.sortedby'} eq "revdomain"){
        @temp = sort  {$b->[3] cmp $a->[3]} @temp;
    }
    if ($ENV{'form.sortedby'} eq "subject"){
        @temp = sort  {lc($a->[1]) cmp lc($b->[1])} @temp;
    }
    if ($ENV{'form.sortedby'} eq "revsubject"){
        @temp = sort  {lc($b->[1]) cmp lc($a->[1])} @temp;
    }
    if ($ENV{'form.sortedby'} eq "status"){
        @temp = sort  {$a->[4] cmp $b->[4]} @temp;
    }
    if ($ENV{'form.sortedby'} eq "revstatus"){
        @temp = sort  {$b->[4] cmp $a->[4]} @temp;
    }
    return @temp;
}

# ======================================================== Display all messages

sub disall {
    my $r=shift;
     $r->print(<<ENDDISHEADER);
<script>
    function checkall() {
	for (i=0; i<document.forms.disall.elements.length; i++) {
            if 
          (document.forms.disall.elements[i].name.indexOf('delmark_')==0) {
	      document.forms.disall.elements[i].checked=true;
            }
        }
    }

    function uncheckall() {
	for (i=0; i<document.forms.disall.elements.length; i++) {
            if 
          (document.forms.disall.elements[i].name.indexOf('delmark_')==0) {
	      document.forms.disall.elements[i].checked=false;
            }
        }
    }
</script>
ENDDISHEADER
    $r->print('<h1>'.&mt('Display All Messages').'</h1><form method=post name=disall '.
	      'action="/adm/email">'.
	      '<table border=2><tr><th colspan=2>&nbsp</th><th>');
    if ($ENV{'form.sortedby'} eq "revdate") {
	$r->print('<a href = "?sortedby=date">'.&mt('Date').'</a></th>');
    } else {
	$r->print('<a href = "?sortedby=revdate">'.&mt('Date').'</a></th>');
    }
    $r->print('<th>');
    if ($ENV{'form.sortedby'} eq "revuser") {
	$r->print('<a href = "?sortedby=user">'.&mt('Username').'</a>');
    } else {
	$r->print('<a href = "?sortedby=revuser">'.&mt('Username').'</a>');
    }
    $r->print('</th><th>');
    if ($ENV{'form.sortedby'} eq "revdomain") {
	$r->print('<a href = "?sortedby=domain">'.&mt('Domain').'</a>');
    } else {
	$r->print('<a href = "?sortedby=revdomain">'.&mt('Domain').'</a>');
    }
    $r->print('</th><th>');
    if ($ENV{'form.sortedby'} eq "revsubject") {
	$r->print('<a href = "?sortedby=subject">'.&mt('Subject').'</a>');
    } else {
    	$r->print('<a href = "?sortedby=revsubject">'.&mt('Subject').'</a>');
    }
    $r->print('</th><th>');
    if ($ENV{'form.sortedby'} eq "revstatus") {
	$r->print('<a href = "?sortedby=status">'.&mt('Status').'</th>');
    } else {
     	$r->print('<a href = "?sortedby=revstatus">'.&mt('Status').'</th>');
    }
    $r->print('</tr>');
    my @temp=sortedmessages();
    foreach (@temp){
	my ($sendtime,$shortsubj,$fromname,$fromdomain,$status,$origID)= @$_;
	if (($status ne 'deleted') && defined($sendtime) && $sendtime!~/error/) {
	    if ($status eq 'new') {
		$r->print('<tr bgcolor="#FFBB77">');
	    } elsif ($status eq 'read') {
		$r->print('<tr bgcolor="#BBBB77">');
	    } elsif ($status eq 'replied') {
		$r->print('<tr bgcolor="#AAAA88">'); 
	    } else {
		$r->print('<tr bgcolor="#99BBBB">');
	    }
	    $r->print('<td><a href="/adm/email?display='.$origID.$sqs. 
		      '">'.&mt('Open').'</a></td><td><a href="/adm/email?markdel='.$origID.$sqs.
		      '">'.&mt('Delete').'</a><input type=checkbox name="delmark_'.$origID.'"></td>'.
		      '<td>'.&Apache::lonlocal::locallocaltime($sendtime).'</td><td>'.
		      $fromname.'</td><td>'.$fromdomain.'</td><td>'.
		      &Apache::lonnet::unescape($shortsubj).'</td><td>'.
                      $status.'</td></tr>');
	}
    }   
    $r->print('</table><p>'.
              '<a href="javascript:checkall()">'.&mt('Check All').'</a>&nbsp;'.
              '<a href="javascript:uncheckall()">'.&mt('Uncheck All').'</a><p>'.
	      '<input type="hidden" name="sortedby" value="'.$ENV{'form.sortedby'}.'" />'.
              '<input type=submit name="markeddel" value="'.&mt('Delete Checked').'">'.
              '</form></body></html>');
}

# ============================================================== Compose output

sub compout {
    my ($r,$forwarding,$broadcast)=@_;
      my $dispcrit='';
    my $dissub='';
    my $dismsg='';
    my $func=&mt('Send New');
    my %lt=&Apache::lonlocal::texthash('us' => 'Username',
				       'do' => 'Domain',
				       'ad' => 'Additional Recipients',
				       'sb' => 'Subject',
				       'ca' => 'Cancel',
				       'ma' => 'Mail');

    if (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'})) {
	 my $crithelp = Apache::loncommon::help_open_topic("Course_Critical_Message");
         $dispcrit=
 '<input type="checkbox" name="critmsg"> '.&mt('Send as critical message').' ' . $crithelp . 
 '<br>'.
 '<input type="checkbox" name="sendbck"> '.&mt('Send as critical message').'  ' .
 &mt('and return receipt') . $crithelp . '<p>';
      }
    if ($forwarding) {
       $dispcrit.='<input type="hidden" name="forwid" value="'.
	   $forwarding.'">';
       $func=&mt('Forward');
      my %message=&Apache::lonnet::get('nohist_email',[$forwarding]);
      my %content=&unpackagemsg($message{$forwarding});

       $dissub=&mt('Forwarding').': '.$content{'subject'};
       $dismsg=&mt('Forwarded message from').' '.
	   $content{'sendername'}.' '.&mt('at').' '.$content{'senderdomain'};
    }
    my $defdom=$ENV{'user.domain'};
    if ($ENV{'form.recdom'}) { $defdom=$ENV{'form.recdom'}; }
      $r->print(
                '<form action="/adm/email"  name="compemail" method="post"'.
                ' enctype="multipart/form-data">'."\n".
                '<input type="hidden" name="sendmail" value="on">'."\n".
                '<table>');
    unless (($broadcast eq 'group') || ($broadcast eq 'upload')) {
        my $domform = &Apache::loncommon::select_dom_form($defdom,'recdomain');
        my $selectlink=&Apache::loncommon::selectstudent_link
	    ('compemail','recuname','recdomain');
       $r->print(<<"ENDREC");
<table>
<tr><td>$lt{'us'}:</td><td><input type="text" size="12" name="recuname" value="$ENV{'form.recname'}"></td><td rowspan="2">$selectlink</td></tr>
<tr><td>$lt{'do'}:</td>
<td>$domform</td></tr>
ENDREC
    }
    my $latexHelp = Apache::loncommon::helpLatexCheatsheet();
    if ($broadcast ne 'upload') {
       $r->print(<<"ENDCOMP");
<tr><td>$lt{'ad'}<br /><tt>username\@domain,username\@domain, ...
</tt></td><td>
<input type="text" size="50" name="additionalrec"></td></tr>
<tr><td>$lt{'sb'}:</td><td><input type="text" size="50" name="subject" value="$dissub">
</td></tr></table>
$latexHelp
<textarea name="message" cols="80" rows="10" wrap="hard">$dismsg
</textarea></p><br />
$dispcrit
<input type="submit" name="send" value="$func $lt{'ma'}" />
<input type="submit" name="cancel" value="$lt{'ca'}" />
ENDCOMP
    } else { # $broadcast is 'upload'
	$r->print(<<ENDUPLOAD);
<input type=hidden name=sendmode value=upload>
<h3>Generate messages from a file</h3>
<p>
Subject: <input type=text size=50 name=subject>
</p>
<p>General message text<br />
<textarea name=message cols=60 rows=10 wrap=hard>$dismsg
</textarea></p>
<p>
The file format for the uploaded portion of the message is:
<pre>
username1\@domain1: text
username2\@domain2: text
username3\@domain1: text
</pre>
</p>
<p>
The messages will be assembled from all lines with the respective 
<tt>username\@domain</tt>, and appended to the general message text.</p>
<p>
<input type=file name=upfile size=20><p>
$dispcrit
<input type=submit value="Upload and send">
ENDUPLOAD
    }
    if ($broadcast eq 'group') {
       &discourse;
    }
    $r->print('</form>');
}

# ---------------------------------------------------- Display all face to face

sub disfacetoface {
    my ($r,$user,$domain)=@_;
    unless ($ENV{'request.course.id'}) { return; }
    unless (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'})) {
	return;
    }
    my %records=&Apache::lonnet::dump('nohist_email',
			 $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
			 $ENV{'course.'.$ENV{'request.course.id'}.'.num'},
                         '%255b'.$user.'%253a'.$domain.'%255d');
    my $result='';
    foreach (sort keys %records) {
        my %content=&unpackagemsg($records{$_});
        next if ($content{'senderdomain'} eq '');
        $content{'message'}=~s/\n/\<br\>/g;
        if ($content{'subject'}=~/^Record/) {
	    $result.='<h3>'.&mt('Record').'</h3>';
        } else {
            $result.='<h3>'.&mt('Sent Message').'</h3>';
            %content=&unpackagemsg($content{'message'});
            $content{'message'}=
                '<b>Subject: '.$content{'subject'}.'</b><br />'.
		$content{'message'};
        }
        $result.=&mt('By').': <b>'.
&Apache::loncommon::aboutmewrapper(
 &Apache::loncommon::plainname($content{'sendername'},$content{'senderdomain'}),$content{'sendername'},$content{'senderdomain'}).'</b> ('.
$content{'sendername'}.'@'.
            $content{'senderdomain'}.') '.$content{'time'}.
            '<br><blockquote>'.
              &Apache::lontexconvert::msgtexconverted($content{'message'}).
	      '</blockquote>';
     }
    # Check to see if there were any messages.
    if ($result eq '') {
        $r->print("<p><b>No notes, face-to-face discussion records, or critical messages in this course.</b></p>");
    } else {
       $r->print($result);
    }
}

# ---------------------------------------------------------------- Face to face

sub facetoface {
    my ($r,$stage)=@_;
    unless (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'})) {
	return;
    }
# from query string
    if ($ENV{'form.recname'}) { $ENV{'form.recuname'}=$ENV{'form.recname'}; }
    if ($ENV{'form.recdom'}) { $ENV{'form.recdomain'}=$ENV{'form.recdom'}; }

    my $defdom=$ENV{'user.domain'};
# already filled in
    if ($ENV{'form.recdomain'}) { $defdom=$ENV{'form.recdomain'}; }
# generate output
    my $domform = &Apache::loncommon::select_dom_form($defdom,'recdomain');
    my $stdbrws = &Apache::loncommon::selectstudent_link
	('stdselect','recuname','recdomain');
    $r->print(<<"ENDTREC");
<h3>User Notes, Records of Face-To-Face Discussions, and Critical Messages in Course</h3>
<form method="post" action="/adm/email" name="stdselect">
<input type="hidden" name="recordftf" value="retrieve" />
<table>
<tr><td>Username:</td><td><input type=text size=12 name=recuname value="$ENV{'form.recuname'}"></td>
<td rowspan="2">
$stdbrws
<input type="submit" value="Retrieve discussion and message records"></td>
</tr>
<tr><td>Domain:</td>
<td>$domform</td></tr>
</table>
</form>
ENDTREC
    if (($stage ne 'query') &&
        ($ENV{'form.recdomain'}) && ($ENV{'form.recuname'})) {
        chomp($ENV{'form.newrecord'});
        if ($ENV{'form.newrecord'}) {
           &user_normal_msg_raw(
            $ENV{'course.'.$ENV{'request.course.id'}.'.num'},
            $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
            'Record ['.$ENV{'form.recuname'}.':'.$ENV{'form.recdomain'}.']',
	    $ENV{'form.newrecord'});
        }
        $r->print('<h3>'.&Apache::loncommon::plainname($ENV{'form.recuname'},
				     $ENV{'form.recdomain'}).'</h3>');
        &disfacetoface($r,$ENV{'form.recuname'},$ENV{'form.recdomain'});
	$r->print(<<ENDRHEAD);
<form method="post" action="/adm/email">
<input name="recdomain" value="$ENV{'form.recdomain'}" type="hidden" />
<input name="recuname" value="$ENV{'form.recuname'}" type="hidden" />
ENDRHEAD
        $r->print(<<ENDBFORM);
<hr />New Record (record is visible to course faculty and staff)<br />
<textarea name="newrecord" cols="80" rows="10" wrap="hard"></textarea>
<br />
<input type="hidden" name="recordftf" value="post" />
<input type="submit" value="Post this record" />
</form>
ENDBFORM
    }
}

# ===================================================================== Handler

sub handler {
    my $r=shift;

# ----------------------------------------------------------- Set document type

  &Apache::loncommon::content_type($r,'text/html');
  $r->send_http_header;

  return OK if $r->header_only;

# --------------------------- Get query string for limited number of parameters
    &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
        ['display','replyto','forward','markread','markdel','markunread',
         'sendreply','compose','sendmail','critical','recname','recdom',
         'recordftf','sortedby']);
    $sqs='&sortedby='.$ENV{'form.sortedby'};
# ------------------------------------------------------ They checked for email
  &Apache::lonnet::put('email_status',{'recnewemail'=>0});
# --------------------------------------------------------------- Render Output
  if (!$ENV{'form.display'}) {
      $r->print('<html><head><title>EMail and Messaging</title>'.
		&Apache::loncommon::studentbrowser_javascript().'</head>'.
		&Apache::loncommon::bodytag('EMail and Messages').
	     &Apache::loncommon::help_open_faq(12).
	     &Apache::loncommon::help_open_bug('Communication Tools'));
  }
  if ($ENV{'form.display'}) {
      my $msgid=$ENV{'form.display'};
      &statuschange($msgid,'read');
      my %message=&Apache::lonnet::get('nohist_email',[$msgid]);
      my %content=&unpackagemsg($message{$msgid});
# info to generate "next" and "previous" buttons
      my @messages=&sortedmessages();
      my $counter=0;
      $r->print('<pre>');
      my $escmsgid=&Apache::lonnet::escape($msgid);
      foreach (@messages) {
 	  if ($_->[5] eq $escmsgid){
 	      last;
 	  }
 	  $counter++;
      }
      $r->print('</pre>');
      my $number_of_messages = scalar(@messages); #subtract 1 for last index
# start output
      $r->print('<html><head><title>EMail and Messaging</title>');
      if (defined($content{'baseurl'})) {
	  $r->print("<base href=\"http://$ENV{'SERVER_NAME'}/$content{'baseurl'}\" />");
      }
      $r->print(&Apache::loncommon::studentbrowser_javascript().
		'</head>'.
		&Apache::loncommon::bodytag('EMail and Messages').
	     &Apache::loncommon::help_open_faq(12).
	     &Apache::loncommon::help_open_bug('Communication Tools'));
      $r->print('<b>'.&mt('Subject').':</b> '.$content{'subject'}.
             '<br><b>'.&mt('From').':</b> '.
&Apache::loncommon::aboutmewrapper(
&Apache::loncommon::plainname($content{'sendername'},$content{'senderdomain'}),
$content{'sendername'},$content{'senderdomain'}).' ('.
                                 $content{'sendername'}.' at '.
                                 $content{'senderdomain'}.') '.
             '<br><b>'.&mt('Time').':</b> '.$content{'time'}.'<p>'.
             '<table border=2><tr bgcolor="#FFFFAA"><td>'.&mt('Functions').':</td>'.
           '<td><a href="/adm/email?replyto='.&Apache::lonnet::escape($msgid).$sqs.
             '"><b>'.&mt('Reply').'</b></a></td>'.
           '<td><a href="/adm/email?forward='.&Apache::lonnet::escape($msgid).$sqs.
             '"><b>'.&mt('Forward').'</b></a></td>'.
        '<td><a href="/adm/email?markunread='.&Apache::lonnet::escape($msgid).$sqs.
             '"><b>'.&mt('Mark Unread').'</b></a></td>'.
        '<td><a href="/adm/email?markdel='.&Apache::lonnet::escape($msgid).$sqs.
             '"><b>Delete</b></a></td>'.
		'<td><a href="/adm/email?sortedby='.$ENV{'form.sortedby'}.
		'"><b>'.&mt('Display all Messages').'</b></a></td>');
      if ($counter > 0){
 	  $r->print('<td><a href="/adm/email?display='.$messages[$counter-1]->[5].$sqs.
           '"><b>'.&mt('Previous').'</b></a></td>');
       }
       if ($counter < $number_of_messages - 1){
 	  $r->print('<td><a href="/adm/email?display='.$messages[$counter+1]->[5].$sqs.
           '"><b>'.&mt('Next').'</b></a></td>');
       }
       $r->print('</tr></table><p><pre>'.
             &Apache::lontexconvert::msgtexconverted($content{'message'}).
             '</pre><hr>'.$content{'citation'});
  } elsif ($ENV{'form.replyto'}) {
      &comprep($r,$ENV{'form.replyto'});
  } elsif ($ENV{'form.sendreply'}) {
      if ($ENV{'form.send'}) {
	  my $msgid=$ENV{'form.sendreply'};
	  my %message=&Apache::lonnet::get('nohist_email',[$msgid]);
	  my %content=&unpackagemsg($message{$msgid},1);
	  &statuschange($msgid,'replied');
	  if ((($ENV{'form.critmsg'}) || ($ENV{'form.sendbck'})) && 
	      (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'}))) {
	      $r->print(&mt('Sending critical message').': '.
			&user_crit_msg($content{'sendername'},
				       $content{'senderdomain'},
				       &Apache::lonfeedback::clear_out_html($ENV{'form.subject'}),
				       &Apache::lonfeedback::clear_out_html($ENV{'form.message'}),
				       $ENV{'form.sendbck'}));
	  } else {
	      $r->print(&mt('Sending').': '.&user_normal_msg($content{'sendername'},
							     $content{'senderdomain'},
							     &Apache::lonfeedback::clear_out_html($ENV{'form.subject'}),
							     &Apache::lonfeedback::clear_out_html($ENV{'form.message'})));
	  }
      }
      if ($ENV{'form.displayedcrit'}) {
          &discrit($r);
      } else {
	  &disall($r);
      }
  } elsif ($ENV{'form.confirm'}) {
      foreach (keys %ENV) {
          if ($_=~/^form\.rec\_(.*)$/) {
	      $r->print('<b>Confirming Receipt:</b> '.
                        &user_crit_received($1).'<br>');
          }
          if ($_=~/^form\.reprec\_(.*)$/) {
              my $msgid=$1;
	      $r->print('<b>Confirming Receipt:</b> '.
                        &user_crit_received($msgid).'<br>');
              &comprep($r,$msgid);
          }
      }
      &discrit($r);
  } elsif ($ENV{'form.critical'}) {
      &discrit($r);
  } elsif ($ENV{'form.forward'}) {
      &compout($r,$ENV{'form.forward'});
  } elsif ($ENV{'form.markread'}) {
  } elsif ($ENV{'form.markdel'}) {
      &statuschange($ENV{'form.markdel'},'deleted');
      &disall($r);
  } elsif ($ENV{'form.markeddel'}) {
      my $total=0;
      foreach (keys %ENV) {
          if ($_=~/^form\.delmark_(.*)$/) {
	      &statuschange(&Apache::lonnet::unescape($1),'deleted');
              $total++;
          }
      }
      $r->print('Deleted '.$total.' message(s)<p>');
      &disall($r);
  } elsif ($ENV{'form.markunread'}) {
      &statuschange($ENV{'form.markunread'},'new');
      &disall($r);
  } elsif ($ENV{'form.compose'}) {
      &compout($r,'',$ENV{'form.compose'});
  } elsif ($ENV{'form.recordftf'}) {
      &facetoface($r,$ENV{'form.recordftf'});
  } elsif ($ENV{'form.sendmail'}) {
      my $sendstatus='';
      if ($ENV{'form.send'}) {
	  my %content=();
	  undef %content;
	  if ($ENV{'form.forwid'}) {
	      my $msgid=$ENV{'form.forwid'};
	      my %message=&Apache::lonnet::get('nohist_email',[$msgid]);
	      %content=&unpackagemsg($message{$msgid},1);
	      &statuschange($msgid,'forwarded');
	      $ENV{'form.message'}.="\n\n-- Forwarded message --\n\n".
		  $content{'message'};
	  }
	  my %toaddr=();
	  undef %toaddr;
	  if ($ENV{'form.sendmode'} eq 'group') {
	      foreach (keys %ENV) {
		  if ($_=~/^form\.send\_to\_\&\&\&[^\&]*\&\&\&\_(.+)$/) {
		      $toaddr{$1}='';
		  }
	      }
	  } elsif ($ENV{'form.sendmode'} eq 'upload') {
	      foreach (split(/[\n\r\f]+/,$ENV{'form.upfile'})) {
		  my ($rec,$txt)=split(/\s*\:\s*/,$_);
		  if ($txt) {
		      $rec=~s/\@/\:/;
		      $toaddr{$rec}.=$txt."\n";
		  }
	      }
	  } else {
	      $toaddr{$ENV{'form.recuname'}.':'.$ENV{'form.recdomain'}}='';
	  }
	  if ($ENV{'form.additionalrec'}) {
	      foreach (split(/\,/,$ENV{'form.additionalrec'})) {
		  my ($auname,$audom)=split(/\@/,$_);
		  $toaddr{$auname.':'.$audom}='';
	      }
	  }
	  foreach (keys %toaddr) {
	      my ($recuname,$recdomain)=split(/\:/,$_);
	      my $msgtxt=&Apache::lonfeedback::clear_out_html($ENV{'form.message'});
	      if ($toaddr{$_}) { $msgtxt.='<hr>'.$toaddr{$_}; }    
	      if ((($ENV{'form.critmsg'}) || ($ENV{'form.sendbck'})) && 
		  (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'}))) {
		  $r->print(&mt('Sending critical message').' ...');
                  $sendstatus.=' '.&user_crit_msg($recuname,$recdomain,
					   &Apache::lonfeedback::clear_out_html($ENV{'form.subject'}),
					   $msgtxt,
					   $ENV{'form.sendbck'});
	      } else {
		  $r->print(&mt('Sending').' ...');
                  $sendstatus.=' '.&user_normal_msg($recuname,$recdomain,
				                         &Apache::lonfeedback::clear_out_html($ENV{'form.subject'}),
							 $msgtxt,
							 $content{'citation'});
	      }
	      $r->print('<br />');
	  }
      }
      if ($sendstatus=~/^(\s*(?:ok|con_delayed)\s*)*$/) {
	  if ($ENV{'form.displayedcrit'}) {
	      &discrit($r);
	  } else {
	      &disall($r);
	  }
      } else {
	  $r->print(
  '<h2><font color="red">'.&mt('Could not deliver message').'</font></h2>'.
  &mt('Please use the browser "Back" button and correct the recipient addresses')
		    );
      }
  } else {
      &disall($r);
  }
  $r->print('</body></html>');
  return OK;

}
# ================================================= Main program, reset counter

BEGIN {
    $msgcount=0;
}

=pod

=back

=cut

1; 

__END__