--- loncom/interface/lonmsg.pm	2004/03/26 17:13:59	1.94
+++ loncom/interface/lonmsg.pm	2005/11/18 13:35:30	1.155
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Routines for messaging
 #
-# $Id: lonmsg.pm,v 1.94 2004/03/26 17:13:59 www Exp $
+# $Id: lonmsg.pm,v 1.155 2005/11/18 13:35:30 www Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -74,11 +74,23 @@ email program, so they have full access
 interface, or other features they may wish to use in response to the
 student's query.
 
+=item * B<Blocking>: LON-CAPA can block display of e-mails that are 
+sent to a student during an online exam. A course coordinator or
+instructor can set an open and close date/time for scheduled online
+exams in a course. If a user uses the LON-CAPA internal messaging 
+system to display e-mails during the scheduled blocking event,  
+display of all e-mail sent during the blocking period will be 
+suppressed, and a message of explanation, including details of the 
+currently active blocking periods will be displayed instead. A user 
+who has a course coordinator or instructor role in a course will be
+unaffected by any blocking periods for the course, unless the user
+also has a student role in the course, AND has selected the student role.
+
 =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
+are much more useful than traditional email can be made to be, even
 with HTML support.
 
 Right now, this document will cover just how to send a message, since
@@ -92,7 +104,7 @@ since lonmsg already implements that fun
 =cut
 
 use strict;
-use Apache::lonnet();
+use Apache::lonnet;
 use vars qw($msgcount);
 use HTML::TokeParser();
 use Apache::Constants qw(:common);
@@ -101,48 +113,57 @@ use Apache::lontexconvert();
 use HTML::Entities();
 use Mail::Send;
 use Apache::lonlocal;
+use Apache::loncommunicate;
+use Apache::lonfeedback;
+use Apache::lonrss();
 
 # Querystring component with sorting type
 my $sqs;
+my $startdis;
+my $interdis;
 
 # ===================================================================== Package
 
 sub packagemsg {
-    my ($subject,$message,$citation,$baseurl,$attachmenturl)=@_;
-    $message =&HTML::Entities::encode($message);
-    $citation=&HTML::Entities::encode($citation);
-    $subject =&HTML::Entities::encode($subject);
+    my ($subject,$message,$citation,$baseurl,$attachmenturl,
+	$recuser,$recdomain)=@_;
+    $message =&HTML::Entities::encode($message,'<>&"');
+    $citation=&HTML::Entities::encode($citation,'<>&"');
+    $subject =&HTML::Entities::encode($subject,'<>&"');
     #remove machine specification
     $baseurl =~ s|^http://[^/]+/|/|;
-    $baseurl =&HTML::Entities::encode($baseurl);
+    $baseurl =&HTML::Entities::encode($baseurl,'<>&"');
     #remove machine specification
     $attachmenturl =~ s|^http://[^/]+/|/|;
-    $attachmenturl =&HTML::Entities::encode($attachmenturl);
+    $attachmenturl =&HTML::Entities::encode($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.':'.$$);
-    my $result='<sendername>'.$ENV{'user.name'}.'</sendername>'.
-           '<senderdomain>'.$ENV{'user.domain'}.'</senderdomain>'.
+           $now.':'.$partsubj.':'.$env{'user.name'}.':'.
+           $env{'user.domain'}.':'.$msgcount.':'.
+           $env{'request.course.id'}.':'.$$);
+    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>'.
+	   '<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>'.
-	   '<coursesec>'.$ENV{'request.course.sec'}.'</coursesec>'.
-	   '<role>'.$ENV{'request.role'}.'</role>'.
-	   '<resource>'.$ENV{'request.filename'}.'</resource>'.
+	   '<courseid>'.$env{'request.course.id'}.'</courseid>'.
+	   '<coursesec>'.$env{'request.course.sec'}.'</coursesec>'.
+	   '<role>'.$env{'request.role'}.'</role>'.
+	   '<resource>'.$env{'request.filename'}.'</resource>'.
            '<msgid>'.$msgid.'</msgid>'.
+	   '<recuser>'.$recuser.'</recuser>'.
+	   '<recdomain>'.$recdomain.'</recdomain>'.
 	   '<message>'.$message.'</message>';
     if (defined($citation)) {
 	$result.='<citation>'.$citation.'</citation>';
@@ -171,13 +192,15 @@ sub unpackagemsg {
        }
     }
     if ($content{'attachmenturl'}) {
-       my ($fname,$ft)=($content{'attachmenturl'}=~/\/(\w+)\.(\w+)$/);
+       my ($fname)=($content{'attachmenturl'}=~m|/([^/]+)$|);
        if ($notoken) {
-	   $content{'message'}.='<p>'.&mt('Attachment').': <tt>'.$fname.'.'.$ft.'</tt>';
+	   $content{'message'}.='<p>'.&mt('Attachment').': <tt>'.$fname.'</tt>';
        } else {
-	   $content{'message'}.='<p>'.&mt('Attachment').': <a href="'.
-	       &Apache::lonnet::tokenwrapper($content{'attachmenturl'}).
-	       '"><tt>'.$fname.'.'.$ft.'</tt></a>';
+	   &Apache::lonnet::allowuploaded('/adm/msg',
+					  $content{'attachmenturl'});
+	   $content{'message'}.='<p>'.&mt('Attachment').
+	       ': <a href="'.$content{'attachmenturl'}.'"><tt>'.
+	       $fname.'</tt></a>';
        }
     }
     return %content;
@@ -186,14 +209,16 @@ sub unpackagemsg {
 # ======================================================= Get info out of msgid
 
 sub unpackmsgid {
-    my $msgid=&Apache::lonnet::unescape(shift);
-    my ($sendtime,$shortsubj,$fromname,$fromdomain)=split(/\:/,
+    my ($msgid,$folder)=@_;
+    $msgid=&Apache::lonnet::unescape($msgid);
+    my $suffix=&foldersuffix($folder);
+    my ($sendtime,$shortsubj,$fromname,$fromdomain,$count,$fromcid)=split(/\:/,
                           &Apache::lonnet::unescape($msgid));
-    my %status=&Apache::lonnet::get('email_status',[$msgid]);
+    my %status=&Apache::lonnet::get('email_status'.$suffix,[$msgid]);
     if ($status{$msgid}=~/^error\:/) { $status{$msgid}=''; }
     unless ($status{$msgid}) { $status{$msgid}='new'; }
-    return ($sendtime,$shortsubj,$fromname,$fromdomain,$status{$msgid});
-} 
+    return ($sendtime,$shortsubj,$fromname,$fromdomain,$status{$msgid},$fromcid);
+}
 
 
 sub sendemail {
@@ -204,7 +229,7 @@ sub sendemail {
     my $msg = new Mail::Send;
     $msg->to($to);
     $msg->subject('[LON-CAPA] '.$subject);
-    if (my $fh = $msg->open('smtp',Server => 'localhost')) {
+    if (my $fh = $msg->open()) {
 	print $fh $body;
 	$fh->close;
     }
@@ -213,9 +238,15 @@ sub sendemail {
 # ==================================================== Send notification emails
 
 sub sendnotification {
-    my ($to,$touname,$toudom,$subj,$crit)=@_;
-    my $sender=$ENV{'environment.firstname'}.' '.$ENV{'environment.lastname'};
+    my ($to,$touname,$toudom,$subj,$crit,$text)=@_;
+    my $sender=$env{'environment.firstname'}.' '.$env{'environment.lastname'};
+    unless ($sender=~/\w/) { 
+	$sender=$env{'user.name'}.'@'.$env{'user.domain'};
+    }
     my $critical=($crit?' critical':'');
+    $text=~s/\&lt\;/\</gs;
+    $text=~s/\&gt\;/\>/gs;
+    $text=~s/\<\/*[^\>]+\>//gs;
     my $url='http://'.
       $Apache::lonnet::hostname{&Apache::lonnet::homeserver($touname,$toudom)}.
       '/adm/email?username='.$touname.'&domain='.$toudom;
@@ -224,18 +255,22 @@ You received a$critical message from $se
 
  $subj
 
+=== Excerpt ============================================================
+$text
+========================================================================
+
 Use
 
  $url
 
-to access this message.
+to access the full message.
 ENDMSG
     &sendemail($to,'New'.$critical.' message from '.$sender,$body);
 }
 # ============================================================= Check for email
 
 sub newmail {
-    if ((time-$ENV{'user.mailcheck.time'})>300) {
+    if ((time-$env{'user.mailcheck.time'})>300) {
         my %what=&Apache::lonnet::get('email_status',['recnewemail']);
         &Apache::lonnet::appenv('user.mailcheck.time'=>time);
         if ($what{'recnewemail'}>0) { return 1; }
@@ -304,7 +339,20 @@ sub del_url_author_res_msg {
     }
     return &Apache::lonnet::del('nohist_res_msgs',\@delmsgs,$domain,$author);
 }
+# =================================== Clear out all author messages in URL path
 
+sub clear_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$url\E/) {
+	    push (@delmsgs,$_);
+	}
+    }
+    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 {
@@ -320,11 +368,12 @@ sub all_url_author_res_msg {
 # ================================================== Critical message to a user
 
 sub user_crit_msg_raw {
-    my ($user,$domain,$subject,$message,$sendback)=@_;
+    my ($user,$domain,$subject,$message,$sendback,$toperm)=@_;
 # Check if allowed missing
     my $status='';
     my $msgid='undefined';
     unless (($message)&&($user)&&($domain)) { $status='empty'; };
+    my $text=$message;
     my $homeserver=&Apache::lonnet::homeserver($user,$domain);
     if ($homeserver ne 'no_host') {
        ($msgid,$message)=&packagemsg($subject,$message);
@@ -333,10 +382,10 @@ sub user_crit_msg_raw {
            'put:'.$domain.':'.$user.':critical:'.
            &Apache::lonnet::escape($msgid).'='.
            &Apache::lonnet::escape($message),$homeserver);
-       if ($ENV{'request.course.id'}) {
+       if ($env{'request.course.id'}) {
           &user_normal_msg_raw(
-            $ENV{'course.'.$ENV{'request.course.id'}.'.num'},
-            $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
+            $env{'course.'.$env{'request.course.id'}.'.num'},
+            $env{'course.'.$env{'request.course.id'}.'.domain'},
             'Critical ['.$user.':'.$domain.']',
 	    $message);
        }
@@ -344,17 +393,23 @@ sub user_crit_msg_raw {
        $status='no_host';
     }
 # Notifications
-    my %userenv = &Apache::lonnet::get('environment',['critnotification'],
+    my %userenv = &Apache::lonnet::get('environment',['critnotification',
+                                                      'permanentemail'],
                                        $domain,$user);
     if ($userenv{'critnotification'}) {
-      &sendnotification($userenv{'critnotification'},$user,$domain,$subject,1);
+      &sendnotification($userenv{'critnotification'},$user,$domain,$subject,1,
+			$text);
+    }
+    if ($toperm && $userenv{'permanentemail'}) {
+      &sendnotification($userenv{'permanentemail'},$user,$domain,$subject,1,
+			$text);
     }
 # Log this
     &Apache::lonnet::logthis(
       'Sending critical email '.$msgid.
       ', log status: '.
-      &Apache::lonnet::log($ENV{'user.domain'},$ENV{'user.name'},
-                         $ENV{'user.home'},
+      &Apache::lonnet::log($env{'user.domain'},$env{'user.name'},
+                         $env{'user.home'},
       'Sending critical '.$msgid.' to '.$user.' at '.$domain.' with status: '
       .$status));
     return $status;
@@ -371,7 +426,7 @@ sub user_crit_msg_raw {
 =cut
 
 sub user_crit_msg {
-    my ($user,$domain,$subject,$message,$sendback)=@_;
+    my ($user,$domain,$subject,$message,$sendback,$toperm)=@_;
     my $status='';
     my %userenv = &Apache::lonnet::get('environment',['msgforward'],
                                        $domain,$user);
@@ -381,10 +436,10 @@ sub user_crit_msg {
 	 my ($forwuser,$forwdomain)=split(/\:/,$_);
          $status.=
 	   &user_crit_msg_raw($forwuser,$forwdomain,$subject,$message,
-                $sendback).' ';
+                $sendback,$toperm).' ';
        }
     } else { 
-	$status=&user_crit_msg_raw($user,$domain,$subject,$message,$sendback);
+	$status=&user_crit_msg_raw($user,$domain,$subject,$message,$sendback,$toperm);
     }
     return $status;
 }
@@ -397,8 +452,8 @@ sub user_crit_received {
     my %contents=&unpackagemsg($message{$msgid},1);
     my $status='rec: '.($contents{'sendback'}?
      &user_normal_msg($contents{'sendername'},$contents{'senderdomain'},
-                     &mt('Receipt').': '.$ENV{'user.name'}.' '.&mt('at').' '.$ENV{'user.domain'}.', '.$contents{'subject'},
-                     &mt('User').' '.$ENV{'user.name'}.' '.&mt('at').' '.$ENV{'user.domain'}.
+                     &mt('Receipt').': '.$env{'user.name'}.' '.&mt('at').' '.$env{'user.domain'}.', '.$contents{'subject'},
+                     &mt('User').' '.$env{'user.name'}.' '.&mt('at').' '.$env{'user.domain'}.
                      ' acknowledged receipt of message'."\n".'   "'.
                      $contents{'subject'}.'"'."\n".&mt('dated').' '.
                      $contents{'time'}.".\n"
@@ -408,8 +463,8 @@ sub user_crit_received {
      'nohist_email',{$contents{'msgid'} => $message{$msgid}});
     $status.=' del: '.
      &Apache::lonnet::del('critical',[$contents{'msgid'}]);
-    &Apache::lonnet::log($ENV{'user.domain'},$ENV{'user.name'},
-                         $ENV{'user.home'},'Received critical message '.
+    &Apache::lonnet::log($env{'user.domain'},$env{'user.name'},
+                         $env{'user.home'},'Received critical message '.
                          $contents{'msgid'}.
                          ', '.$status);
     return $status;
@@ -418,32 +473,48 @@ sub user_crit_received {
 # ======================================================== Normal communication
 
 sub user_normal_msg_raw {
-    my ($user,$domain,$subject,$message,$citation,$baseurl,$attachmenturl)=@_;
+    my ($user,$domain,$subject,$message,$citation,$baseurl,$attachmenturl,
+	$toperm)=@_;
 # Check if allowed missing
     my $status='';
     my $msgid='undefined';
+    my $text=$message;
     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);
+                                     $attachmenturl,$user,$domain);
+# Store in user folder
        $status=&Apache::lonnet::critical(
            'put:'.$domain.':'.$user.':nohist_email:'.
            &Apache::lonnet::escape($msgid).'='.
            &Apache::lonnet::escape($message),$homeserver);
+# Save new message received time
        &Apache::lonnet::put
                          ('email_status',{'recnewemail'=>time},$domain,$user);
+# Into sent-mail folder
+       $status.=' '.&Apache::lonnet::critical(
+           'put:'.$env{'user.domain'}.':'.$env{'user.name'}.
+					      ':nohist_email_sent:'.
+           &Apache::lonnet::escape($msgid).'='.
+           &Apache::lonnet::escape($message),$env{'user.home'});
     } else {
        $status='no_host';
     }
 # Notifications
-    my %userenv = &Apache::lonnet::get('environment',['notification'],
+    my %userenv = &Apache::lonnet::get('environment',['notification',
+                                                      'permanentemail'],
                                        $domain,$user);
     if ($userenv{'notification'}) {
-	&sendnotification($userenv{'notification'},$user,$domain,$subject,0);
+	&sendnotification($userenv{'notification'},$user,$domain,$subject,0,
+			  $text);
+    }
+    if ($toperm && $userenv{'permanentemail'}) {
+      &sendnotification($userenv{'permanentemail'},$user,$domain,$subject,0,
+			$text);
     }
-    &Apache::lonnet::log($ENV{'user.domain'},$ENV{'user.name'},
-                         $ENV{'user.home'},
+    &Apache::lonnet::log($env{'user.domain'},$env{'user.name'},
+                         $env{'user.home'},
       'Sending '.$msgid.' to '.$user.' at '.$domain.' with status: '.$status);
     return $status;
 }
@@ -459,7 +530,8 @@ sub user_normal_msg_raw {
 =cut
 
 sub user_normal_msg {
-    my ($user,$domain,$subject,$message,$citation,$baseurl,$attachmenturl)=@_;
+    my ($user,$domain,$subject,$message,$citation,$baseurl,$attachmenturl,
+	$toperm)=@_;
     my $status='';
     my %userenv = &Apache::lonnet::get('environment',['msgforward'],
                                        $domain,$user);
@@ -469,44 +541,124 @@ sub user_normal_msg {
 	 my ($forwuser,$forwdomain)=split(/\:/,$_);
          $status.=
 	  &user_normal_msg_raw($forwuser,$forwdomain,$subject,$message,
-			       $citation,$baseurl,$attachmenturl).' ';
+			       $citation,$baseurl,$attachmenturl,$toperm).' ';
        }
     } else { 
 	$status=&user_normal_msg_raw($user,$domain,$subject,$message,
-				     $citation,$baseurl,$attachmenturl);
+				     $citation,$baseurl,$attachmenturl,$toperm);
     }
     return $status;
 }
 
 
+# ============================================================ List all folders
+
+sub folderlist {
+    my $folder=shift;
+    my @allfolders=&Apache::lonnet::getkeys('email_folders');
+    if ($allfolders[0]=~/^error:/) { @allfolders=(); }
+    return '<form method="post" action="/adm/email">'.
+	&mt('Folder').': '.
+	&Apache::loncommon::select_form($folder,'folder',
+			     ('' => &mt('INBOX'),'trash' => &mt('TRASH'),
+			      'new' => &mt('New Messages Only'),
+                              'critical' => &mt('Critical'),
+			      'sent' => &mt('Sent Messages'),
+			      map { $_ => $_ } @allfolders)).
+			      ' '.&mt('Show').
+			      '<select name="interdis">'.
+			      join("\n",map { '<option value="'.$_.'"'.
+	 ($_==$interdis?' selected="selected"':'').'>'.$_.'</option>' }
+				   (10,20,50,100,200)).'</select>'.	
+   '<input type="submit" value="'.&mt('View Folder').'" /><br />'.
+    '<input type="hidden" name="sortedby" value="'.$env{'form.sortedby'}.'" />'.
+			      ($folder=~/^(new|critical)/?'</form>':'');
+}
+
+sub scrollbuttons {
+    my ($start,$maxdis,$first,$finish,$total)=@_;
+    unless ($total>0) { return ''; }
+    $start++; $maxdis++;$first++;$finish++;
+    return
+   &mt('Page').': '. 
+   '<input type="submit" name="firstview" value="'.&mt('First').'" />'.
+   '<input type="submit" name="prevview" value="'.&mt('Previous').'" />'.
+   '<input type="text" size="5" name="startdis" value="'.$start.'" onChange="this.form.submit()" /> of '.$maxdis.
+   '<input type="submit" name="nextview" value="'.&mt('Next').'" />'.
+   '<input type="submit" name="lastview" value="'.&mt('Last').'" /><br />'.
+   &mt('Showing messages [_1] through [_2] of [_3]',$first,$finish,$total).'</form>';
+}
+
+# =============================================================== Folder suffix
+
+sub foldersuffix {
+    my $folder=shift;
+    unless ($folder) { return ''; }
+    return '_'.&Apache::lonnet::escape($folder);
+}
+
 # =============================================================== Status Change
 
 sub statuschange {
-    my ($msgid,$newstatus)=@_;
-    my %status=&Apache::lonnet::get('email_status',[$msgid]);
+    my ($msgid,$newstatus,$folder)=@_;
+    my $suffix=&foldersuffix($folder);
+    my %status=&Apache::lonnet::get('email_status'.$suffix,[$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 => $newstatus});
+	&Apache::lonnet::put('email_status'.$suffix,{$msgid => $newstatus});
     }
     if (($newstatus eq 'deleted') || ($newstatus eq 'new')) {
-	&Apache::lonnet::put('email_status',{$msgid => $newstatus});
+	&Apache::lonnet::put('email_status'.$suffix,{$msgid => $newstatus});
     }
+    if ($newstatus eq 'deleted') {
+       &movemsg(&Apache::lonnet::unescape($msgid),$folder,'trash');
+   }
+}
+
+# ============================================================= Make new folder
+
+sub makefolder {
+    my ($newfolder)=@_;
+    if (($newfolder eq 'sent')
+     || ($newfolder eq 'critical')
+     || ($newfolder eq 'trash')
+     || ($newfolder eq 'new')) { return; }
+    &Apache::lonnet::put('email_folders',{$newfolder => time});
+}
+
+# ======================================================== Move between folders
+
+sub movemsg {
+    my ($msgid,$srcfolder,$trgfolder)=@_;
+    if ($srcfolder eq 'new') { $srcfolder=''; }
+    my $srcsuffix=&foldersuffix($srcfolder);
+    my $trgsuffix=&foldersuffix($trgfolder);
+
+# Copy message
+    my %message=&Apache::lonnet::get('nohist_email'.$srcsuffix,[$msgid]);
+    &Apache::lonnet::put('nohist_email'.$trgsuffix,{$msgid => $message{$msgid}});
+
+# Copy status
+    unless ($trgfolder eq 'trash') {
+	my %status=&Apache::lonnet::get('email_status'.$srcsuffix,[$msgid]);
+	&Apache::lonnet::put('email_status'.$trgsuffix,{$msgid => $status{$msgid}});
+    }
+# Delete orginals
+    &Apache::lonnet::del('nohist_email'.$srcsuffix,[$msgid]);
+    &Apache::lonnet::del('email_status'.$srcsuffix,[$msgid]);
 }
 
 # ======================================================= 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 $classlist = &Apache::loncoursedata::get_classlist();
     my $now=time;
-    my %lt=&Apache::lonlocal::texthash('cfa' => 'Check for All',
-            'cfs' => 'Check for Section/Group',
-            'cfn' => 'Check for None');
+    my %lt=&Apache::lonlocal::texthash('cfa' => 'Check All',
+            'cfs' => 'Check Section/Group',
+            'cfn' => 'Uncheck All');
     $r->print(<<ENDDISHEADER);
 <input type="hidden" name="sendmode" value="group" />
 <script>
@@ -540,43 +692,50 @@ sub discourse {
 </script>
 <input type="button" onClick="checkall()" value="$lt{'cfa'}" />&nbsp;
 <input type="button" onClick="checksec()" value="$lt{'cfs'}" />
-<input type="text" size="5" name=chksec />&nbsp;
+<input type="text" size="5" name="chksec" />&nbsp;
 <input type="button" onClick="uncheckall()" value="$lt{'cfn'}" />
 <p>
 ENDDISHEADER
-    my %coursepersonnel=
-       &Apache::lonnet::get_course_adv_roles();
+    my %coursepersonnel=&Apache::lonnet::get_course_adv_roles();
+    $r->print('<table>');
     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>'.$role.'</i>');
-	}
+        foreach (split(/\,/,$coursepersonnel{$role})) {
+            my ($puname,$pudom)=split(/\:/,$_);
+            $r->print('<tr><td><label>'.
+                      '<input type="checkbox" name="send_to_&&&&&&_'.
+                      $puname.':'.$pudom.'" /> '.
+                      &Apache::loncommon::plainname($puname,$pudom).
+                      '</label></td>'.
+                      '<td>('.$_.'),</td><td><i>'.$role.'</i></td></tr>');
+        }
     }
-
-    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);
-        } 
+    $r->print('</table><table>');
+    my $sort = sub {
+	my $aname=lc($classlist->{$a}[&Apache::loncoursedata::CL_FULLNAME()]);
+	if (!$aname) { $aname=$a; }
+	my $bname=lc($classlist->{$b}[&Apache::loncoursedata::CL_FULLNAME()]);
+	if (!$bname) { $bname=$b; }
+	return $aname cmp $bname;
+    };
+    foreach my $student (sort $sort (keys(%{$classlist}))) {
+	my $info=$classlist->{$student};
+        my ($sname,$sdom,$status,$fullname,$section) =
+            (@{$info}[&Apache::loncoursedata::CL_SNAME(),
+                      &Apache::loncoursedata::CL_SDOM(),
+                      &Apache::loncoursedata::CL_STATUS(),
+                      &Apache::loncoursedata::CL_FULLNAME(),
+                      &Apache::loncoursedata::CL_SECTION()]);
+        next if ($status ne 'Active');
+	next if ($env{'request.course.sec'} &&
+		 $section ne $env{'request.course.sec'});
+        my $key = 'send_to_&&&'.$section.'&&&_'.$student;
+        if (! defined($fullname) || $fullname eq '') { $fullname = $sname; }
+        $r->print('<tr><td><label>'.
+                  qq{<input type="checkbox" name="$key" />}.('&nbsp;'x2).
+                  $fullname.'</label></td><td>'.$sname.'@'.$sdom.'</td><td>'.$section.
+                  '</td></tr>');
     }
+    $r->print('</table>');
 }
 
 # ==================================================== Display Critical Message
@@ -584,92 +743,206 @@ ENDDISHEADER
 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>';
+        '<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>'.
+        $result.='<hr />'.&mt('From').': <b>'.
 &Apache::loncommon::aboutmewrapper(
  &Apache::loncommon::plainname($content{'sendername'},$content{'senderdomain'}),$content{'sendername'},$content{'senderdomain'}).'</b> ('.
 $content{'sendername'}.'@'.
             $content{'senderdomain'}.') '.$content{'time'}.
-            '<br>'.&mt('Subject').': '.$content{'subject'}.
-            '<br><blockquote>'.
+            '<br />'.&mt('Subject').': '.$content{'subject'}.
+            '<br /><pre>'.
               &Apache::lontexconvert::msgtexconverted($content{'message'}).
-            '</blockquote><small>'.
+            '</pre><small>'.
 &mt('You have to confirm that you received this message. After confirmation, this message will be moved to your regular inbox').
             '</small><br />'.
-            '<input type=submit name="rec_'.$_.'" value="'.&mt('Confirm Receipt').'">'.
-            '<input type=submit name="reprec_'.$_.'" '.
-                  'value="'.&mt('Confirm Receipt and Reply').'">';
+            '<input type="submit" name="rec_'.$_.'" 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>';
+	    '<a href="/adm/roles">'.&mt('Select a course').'</a><br />'.
+            '<a href="/adm/email">'.&mt('Communicate').'</a>';
     } else {
         $r->print($header);
     }
     $r->print($result);
-    $r->print('<input type=hidden name="displayedcrit" value="true"></form>');
+    $r->print('<input type="hidden" name="displayedcrit" value="true" /></form>');
 }
 
 sub sortedmessages {
-    my @messages = &Apache::lonnet::getkeys('nohist_email');
+    my ($blocked,$startblock,$endblock,$numblocked,$folder) = @_;
+    my $suffix=&foldersuffix($folder);
+    my @messages = &Apache::lonnet::getkeys('nohist_email'.$suffix);
     #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 ($sendtime,$shortsubj,$fromname,$fromdomain,$status,$fromcid)=
+	    &Apache::lonmsg::unpackmsgid($msgid,$folder);
 	my @temp1 = ($sendtime,$shortsubj,$fromname,$fromdomain,$status,
 		     $msgid);
-	push @temp ,\@temp1;
+        # Check whether message was sent during blocking period.
+        if ($sendtime >= $startblock && ($sendtime <= $endblock && $endblock > 0) ) {
+            my $escid = &Apache::lonnet::unescape($msgid);
+            $$blocked{$escid} = 'ON';
+            $$numblocked ++;
+        } else { 
+            push @temp ,\@temp1;
+        }
     }
     #default sort
     @temp = sort  {$a->[0] <=> $b->[0]} @temp;    
-    if ($ENV{'form.sortedby'} eq "date"){
+    if ($env{'form.sortedby'} eq "date"){
         @temp = sort  {$a->[0] <=> $b->[0]} @temp;    
     }
-    if ($ENV{'form.sortedby'} eq "revdate"){
+    if ($env{'form.sortedby'} eq "revdate"){
     	@temp = sort  {$b->[0] <=> $a->[0]} @temp; 
     }
-    if ($ENV{'form.sortedby'} eq "user"){
+    if ($env{'form.sortedby'} eq "user"){
 	@temp = sort  {lc($a->[2]) cmp lc($b->[2])} @temp;
     }
-    if ($ENV{'form.sortedby'} eq "revuser"){
+    if ($env{'form.sortedby'} eq "revuser"){
 	@temp = sort  {lc($b->[2]) cmp lc($a->[2])} @temp;
     }
-    if ($ENV{'form.sortedby'} eq "domain"){
+    if ($env{'form.sortedby'} eq "domain"){
         @temp = sort  {$a->[3] cmp $b->[3]} @temp;
     }
-    if ($ENV{'form.sortedby'} eq "revdomain"){
+    if ($env{'form.sortedby'} eq "revdomain"){
         @temp = sort  {$b->[3] cmp $a->[3]} @temp;
     }
-    if ($ENV{'form.sortedby'} eq "subject"){
+    if ($env{'form.sortedby'} eq "subject"){
         @temp = sort  {lc($a->[1]) cmp lc($b->[1])} @temp;
     }
-    if ($ENV{'form.sortedby'} eq "revsubject"){
+    if ($env{'form.sortedby'} eq "revsubject"){
         @temp = sort  {lc($b->[1]) cmp lc($a->[1])} @temp;
     }
-    if ($ENV{'form.sortedby'} eq "status"){
+    if ($env{'form.sortedby'} eq "status"){
         @temp = sort  {$a->[4] cmp $b->[4]} @temp;
     }
-    if ($ENV{'form.sortedby'} eq "revstatus"){
+    if ($env{'form.sortedby'} eq "revstatus"){
         @temp = sort  {$b->[4] cmp $a->[4]} @temp;
     }
     return @temp;
 }
 
+# ======================================================== Display new messages
+
+
+sub disnew {
+    my $r=shift;
+    my %lt=&Apache::lonlocal::texthash(
+				       'nm' => 'New Messages',
+				       'su' => 'Subject',
+				       'da' => 'Date',
+				       'us' => 'Username',
+				       'op' => 'Open',
+				       'do' => 'Domain'
+				       );
+    my @msgids = sort split(/\&/,&Apache::lonnet::reply
+                            ('keys:'.$env{'user.domain'}.':'.
+                             $env{'user.name'}.':nohist_email',
+                             $env{'user.home'}));
+    my @newmsgs;
+    my %setters = ();
+    my $startblock = 0;
+    my $endblock = 0;
+    my %blocked = ();
+    my $numblocked = 0;
+    # Check for blocking of display because of scheduled online exams.
+    &blockcheck(\%setters,\$startblock,\$endblock);
+    foreach (@msgids) {
+        my ($sendtime,$shortsubj,$fromname,$fromdom,$status,$fromcid)=
+	    &Apache::lonmsg::unpackmsgid($_);
+        if (defined($sendtime) && $sendtime!~/error/) {
+            my $numsendtime = $sendtime;
+            $sendtime = &Apache::lonlocal::locallocaltime($sendtime);
+            if ($status eq 'new') {
+                if ($numsendtime >= $startblock && ($numsendtime <= $endblock && $endblock > 0) ) {
+                    $blocked{$_} = 'ON';
+                    $numblocked ++;
+                } else {
+                    push @newmsgs, { 
+                        msgid    => $_,
+                        sendtime => $sendtime,
+                        shortsub => &Apache::lonnet::unescape($shortsubj),
+                        from     => $fromname,
+                        fromdom  => $fromdom 
+                        }
+                }
+            }
+        }
+    }
+    if ($#newmsgs >= 0) {
+        $r->print(<<TABLEHEAD);
+<h2>$lt{'nm'}</h2>
+<table border=2><tr><th>&nbsp</th>
+<th>$lt{'da'}</th><th>$lt{'us'}</th><th>$lt{'do'}</th><th>$lt{'su'}</th></tr>
+TABLEHEAD
+        foreach my $msg (@newmsgs) {
+            $r->print(<<"ENDLINK");
+<tr class="new" bgcolor="#FFBB77" onMouseOver="javascript:style.backgroundColor='#DD9955'" 
+onMouseOut="javascript:style.backgroundColor='#FFBB77'">
+<td><a href="/adm/email?dismode=new&display=$msg->{'msgid'}">$lt{'op'}</a></td>
+ENDLINK
+            foreach ('sendtime','from','fromdom','shortsub') {
+                $r->print("<td>$msg->{$_}</td>");
+            }
+            $r->print("</td></tr>");
+        }
+        $r->print('</table>'.&Apache::loncommon::endbodytag().'</html>');
+    } elsif ($numblocked == 0) {
+        $r->print("<h3>".&mt('You have no unread messages')."</h3>");
+    }
+    if ($numblocked > 0) {
+        my $beginblock = &Apache::lonlocal::locallocaltime($startblock);
+        my $finishblock = &Apache::lonlocal::locallocaltime($endblock);
+        if ($numblocked == 1) {
+            $r->print("<h3>".&mt('You have').' '.$numblocked.' '.&mt('blocked unread message').".</h3>");
+            $r->print(&mt('This message is not viewable because').' ');
+        } else {
+            $r->print("<h3>".&mt('You have').' '.$numblocked.' '.&mt('blocked unread messages').".</h3>");
+            $r->print(&mt('These').' '.$numblocked.' '.&mt('messages are not viewable because '));
+        }
+        $r->print(
+&mt('display of LON-CAPA messages sent to you by other students between').' '.$beginblock.' '.&mt('and').' '.$finishblock.' '.&mt('is currently being blocked because of online exams').'.');
+        &build_block_table($r,$startblock,$endblock,\%setters);
+    }
+}
+
+
 # ======================================================== Display all messages
 
 sub disall {
-    my $r=shift;
-     $r->print(<<ENDDISHEADER);
+    my ($r,$folder)=@_;
+    $r->print(&folderlist($folder));
+    if ($folder eq 'new') {
+	&disnew($r);
+    } elsif ($folder eq 'critical') {
+	&discrit($r);
+    } else {
+	&disfolder($r,$folder);
+    }
+}
+
+# ============================================================ Display a folder
+
+sub disfolder {
+    my ($r,$folder)=@_;
+    my %blocked = ();
+    my %setters = ();
+    my $startblock;
+    my $endblock;
+    my $numblocked = 0;
+    &blockcheck(\%setters,\$startblock,\$endblock);
+    $r->print(<<ENDDISHEADER);
 <script>
     function checkall() {
 	for (i=0; i<document.forms.disall.elements.length; i++) {
@@ -690,73 +963,111 @@ sub disall {
     }
 </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>');
+    my $fsqs='&folder='.$folder;
+    my @temp=sortedmessages(\%blocked,$startblock,$endblock,\$numblocked,$folder);
+    my $totalnumber=$#temp+1;
+    unless ($totalnumber>0) {
+	$r->print('<h2>'.&mt('Empty Folder').'</h2>');
+	return;
+    }
+    unless ($interdis) {
+	$interdis=20;
+    }
+    my $number=int($totalnumber/$interdis);
+    if (($startdis<0) || ($startdis>$number)) { $startdis=$number; }
+    my $firstdis=$interdis*$startdis;
+    if ($firstdis>$#temp) { $firstdis=$#temp-$interdis+1; }
+    my $lastdis=$firstdis+$interdis-1;
+    if ($lastdis>$#temp) { $lastdis=$#temp; }
+    $r->print(&scrollbuttons($startdis,$number,$firstdis,$lastdis,$totalnumber));
+    $r->print('<form method="post" name="disall" action="/adm/email">'.
+	      '<table border=2><tr><th colspan="3">&nbsp</th><th>');
+    if ($env{'form.sortedby'} eq "revdate") {
+	$r->print('<a href = "?sortedby=date'.$fsqs.'">'.&mt('Date').'</a></th>');
     } else {
-	$r->print('<a href = "?sortedby=revdate">'.&mt('Date').'</a></th>');
+	$r->print('<a href = "?sortedby=revdate'.$fsqs.'">'.&mt('Date').'</a></th>');
     }
     $r->print('<th>');
-    if ($ENV{'form.sortedby'} eq "revuser") {
-	$r->print('<a href = "?sortedby=user">'.&mt('Username').'</a>');
+    if ($env{'form.sortedby'} eq "revuser") {
+	$r->print('<a href = "?sortedby=user'.$fsqs.'">'.&mt('Username').'</a>');
     } else {
-	$r->print('<a href = "?sortedby=revuser">'.&mt('Username').'</a>');
+	$r->print('<a href = "?sortedby=revuser'.$fsqs.'">'.&mt('Username').'</a>');
     }
     $r->print('</th><th>');
-    if ($ENV{'form.sortedby'} eq "revdomain") {
-	$r->print('<a href = "?sortedby=domain">'.&mt('Domain').'</a>');
+    if ($env{'form.sortedby'} eq "revdomain") {
+	$r->print('<a href = "?sortedby=domain'.$fsqs.'">'.&mt('Domain').'</a>');
     } else {
-	$r->print('<a href = "?sortedby=revdomain">'.&mt('Domain').'</a>');
+	$r->print('<a href = "?sortedby=revdomain'.$fsqs.'">'.&mt('Domain').'</a>');
     }
     $r->print('</th><th>');
-    if ($ENV{'form.sortedby'} eq "revsubject") {
-	$r->print('<a href = "?sortedby=subject">'.&mt('Subject').'</a>');
+    if ($env{'form.sortedby'} eq "revsubject") {
+	$r->print('<a href = "?sortedby=subject'.$fsqs.'">'.&mt('Subject').'</a>');
     } else {
-    	$r->print('<a href = "?sortedby=revsubject">'.&mt('Subject').'</a>');
+    	$r->print('<a href = "?sortedby=revsubject'.$fsqs.'">'.&mt('Subject').'</a>');
     }
     $r->print('</th><th>');
-    if ($ENV{'form.sortedby'} eq "revstatus") {
-	$r->print('<a href = "?sortedby=status">'.&mt('Status').'</th>');
+    if ($env{'form.sortedby'} eq "revstatus") {
+	$r->print('<a href = "?sortedby=status'.$fsqs.'">'.&mt('Status').'</a></th>');
     } else {
-     	$r->print('<a href = "?sortedby=revstatus">'.&mt('Status').'</th>');
+     	$r->print('<a href = "?sortedby=revstatus'.$fsqs.'">'.&mt('Status').'</a></th>');
     }
-    $r->print('</tr>');
-    my @temp=sortedmessages();
-    foreach (@temp){
-	my ($sendtime,$shortsubj,$fromname,$fromdomain,$status,$origID)= @$_;
+    $r->print("</tr>\n");
+    for (my $n=$firstdis;$n<=$lastdis;$n++) {
+	my ($sendtime,$shortsubj,$fromname,$fromdomain,$status,$origID)= @{$temp[$n]};
 	if (($status ne 'deleted') && defined($sendtime) && $sendtime!~/error/) {
 	    if ($status eq 'new') {
-		$r->print('<tr bgcolor="#FFBB77">');
+		$r->print('<tr bgcolor="#FFBB77" onMouseOver="javascript:style.backgroundColor=\'#DD9955\'"  onMouseOut="javascript:style.backgroundColor=\'#FFBB77\'">');
 	    } elsif ($status eq 'read') {
-		$r->print('<tr bgcolor="#BBBB77">');
+		$r->print('<tr bgcolor="#BBBB77" onMouseOver="javascript:style.backgroundColor=\'#999944\'"  onMouseOut="javascript:style.backgroundColor=\'#BBBB77\'">');
 	    } elsif ($status eq 'replied') {
-		$r->print('<tr bgcolor="#AAAA88">'); 
+		$r->print('<tr bgcolor="#AAAA88" onMouseOver="javascript:style.backgroundColor=\'#888855\'"  onMouseOut="javascript:style.backgroundColor=\'#AAAA88\'">'); 
 	    } else {
-		$r->print('<tr bgcolor="#99BBBB">');
+		$r->print('<tr bgcolor="#99BBBB" onMouseOver="javascript:style.backgroundColor=\'#669999\'"  onMouseOut="javascript:style.backgroundColor=\'#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>'.
+	    $r->print('<td><input type="checkbox" name="delmark_'.$origID.'" /></td><td><a href="/adm/email?display='.$origID.$sqs. 
+		      '">'.&mt('Open').'</a></td><td>'.
+		      ($folder ne 'trash'?'<a href="/adm/email?markdel='.$origID.$sqs.
+		      '">'.&mt('Delete'):'&nbsp').'</a></td>'.
 		      '<td>'.&Apache::lonlocal::locallocaltime($sendtime).'</td><td>'.
 		      $fromname.'</td><td>'.$fromdomain.'</td><td>'.
 		      &Apache::lonnet::unescape($shortsubj).'</td><td>'.
-                      $status.'</td></tr>');
+                      $status."</td></tr>\n");
+	} elsif ($status eq 'deleted') {
+# purge
+	    &movemsg(&Apache::lonnet::unescape($origID),$folder,'trash');
 	}
     }   
-    $r->print('</table><p>'.
-              '<a href="javascript:checkall()">'.&mt('Check All').'</a>&nbsp;'.
-              '<a href="javascript:uncheckall()">'.&mt('Uncheck All').'</a><p>'.
-	      '<input type="hidden" name="sortedby" value="'.$ENV{'form.sortedby'}.'" />'.
-              '<input type="submit" name="markeddel" value="'.&mt('Delete Checked').'" />'.
-              '</form></body></html>');
+    $r->print("</table>\n<p>".
+  '<a href="javascript:checkall()">'.&mt('Check All').'</a>&nbsp;'.
+  '<a href="javascript:uncheckall()">'.&mt('Uncheck All').'</a></p>'.
+  '<input type="hidden" name="sortedby" value="'.$env{'form.sortedby'}.'" />');
+    if ($folder ne 'trash') {
+	$r->print(
+	      '<p><input type="submit" name="markeddel" value="'.&mt('Delete Checked').'" /></p>');
+    }
+    $r->print('<p><input type="submit" name="markedmove" value="'.&mt('Move Checked to Folder').'" />');
+    my @allfolders=&Apache::lonnet::getkeys('email_folders');
+    if ($allfolders[0]=~/^error:/) { @allfolders=(); }
+    $r->print(
+	&Apache::loncommon::select_form('','movetofolder',
+			     ( map { $_ => $_ } @allfolders))
+	      );
+    my $postedstartdis=$startdis+1;
+    $r->print('<input type="hidden" name="folder" value="'.$folder.'" /><input type="hidden" name="startdis" value="'.$postedstartdis.'" /><input type="hidden" name="interdis" value="'.$env{'form.interdis'}.'" /></form>');
+    if ($numblocked > 0) {
+        my $beginblock = &Apache::lonlocal::locallocaltime($startblock);
+        my $finishblock = &Apache::lonlocal::locallocaltime($endblock);
+        $r->print('<br /><br />'.
+                  $numblocked.' '.&mt('message(s) is/are not viewable because display of LON-CAPA messages sent to you by other students between').' '.$beginblock.' '.&mt('and').' '.$finishblock.' '.&mt('is currently being blocked because of online exams.'));
+        &build_block_table($r,$startblock,$endblock,\%setters);
+    }
 }
 
 # ============================================================== Compose output
 
 sub compout {
-    my ($r,$forwarding,$replying,$broadcast,$replycrit)=@_;
+    my ($r,$forwarding,$replying,$broadcast,$replycrit,$folder,$dismode)=@_;
+    my $suffix=&foldersuffix($folder);
 
     if ($broadcast eq 'individual') {
 	&printheader($r,'/adm/email?compose=individual',
@@ -787,6 +1098,7 @@ sub compout {
     my $dispcrit='';
     my $dissub='';
     my $dismsg='';
+    my $disbase='';
     my $func=&mt('Send New');
     my %lt=&Apache::lonlocal::texthash('us' => 'Username',
 				       'do' => 'Domain',
@@ -795,20 +1107,23 @@ sub compout {
 				       'ca' => 'Cancel',
 				       'ma' => 'Mail');
 
-    if (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'})) {
+    if (&Apache::lonnet::allowed('srm',$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>';
-     }
+ '<p><label><input type="checkbox" name="critmsg" /> '.&mt('Send as critical message').'</label> ' . $crithelp . 
+ '</p><p>'.
+ '<label><input type="checkbox" name="sendbck" /> '.&mt('Send as critical message').'  ' .
+ &mt('and return receipt') . '</label>' . $crithelp . 
+ '</p><p><label><input type="checkbox" name="permanent" /> '.
+&mt('Send copy to permanent email address (if known)').'</label></p>'.
+'<p><label><input type="checkbox" name="rsspost" /> '.
+		  &mt('Include in course RSS newsfeed').'</label></p>';      }
     my %message;
     my %content;
-    my $defdom=$ENV{'user.domain'};
+    my $defdom=$env{'user.domain'};
     if ($forwarding) {
-	%message=&Apache::lonnet::get('nohist_email',[$forwarding]);
-	%content=&unpackagemsg($message{$forwarding});
+	%message=&Apache::lonnet::get('nohist_email'.$suffix,[$forwarding]);
+	%content=&unpackagemsg($message{$forwarding},$folder);
 	$dispcrit.='<input type="hidden" name="forwid" value="'.
 	    $forwarding.'" />';
 	$func=&mt('Forward');
@@ -816,21 +1131,34 @@ sub compout {
 	$dissub=&mt('Forwarding').': '.$content{'subject'};
 	$dismsg=&mt('Forwarded message from').' '.
 	    $content{'sendername'}.' '.&mt('at').' '.$content{'senderdomain'};
+	if ($content{'baseurl'}) {
+	    $disbase='<input type="hidden" name="baseurl" value="'.&Apache::lonnet::escape($content{'baseurl'}).'" />';
+	}
     }
     if ($replying) {
-	%message=&Apache::lonnet::get('nohist_email',[$replying]);
-	%content=&unpackagemsg($message{$replying});
-	$dispcrit.='<input type="hidden" name="forwid" value="'.
-	    $forwarding.'" />';
-	$func=&mt('Replying to');
+	%message=&Apache::lonnet::get('nohist_email'.$suffix,[$replying]);
+	%content=&unpackagemsg($message{$replying},$folder);
+	$dispcrit.='<input type="hidden" name="replyid" value="'.
+	    $replying.'" />';
+	$func=&mt('Send Reply to');
 	
 	$dissub=&mt('Reply').': '.$content{'subject'};       
 	$dismsg='> '.$content{'message'};
 	$dismsg=~s/\r/\n/g;
 	$dismsg=~s/\f/\n/g;
 	$dismsg=~s/\n+/\n\> /g;
+	if ($content{'baseurl'}) {
+	    $disbase='<input type="hidden" name="baseurl" value="'.&Apache::lonnet::escape($content{'baseurl'}).'" />';
+	    if ($env{'user.adv'}) {
+		$disbase.='<label><input type="checkbox" name="storebasecomment" />'.&mt('Store message for re-use').
+		    '</label> <a href="/adm/email?showcommentbaseurl='.
+		    &Apache::lonnet::escape($content{'baseurl'}).'" target="comments">'.
+		    &mt('Show re-usable messages').'</a><br />';
+	    }
+	}
     }
-    if ($ENV{'form.recdom'}) { $defdom=$ENV{'form.recdom'}; }
+    my $citation=&displayresource(%content);
+    if ($env{'form.recdom'}) { $defdom=$env{'form.recdom'}; }
       $r->print(
                 '<form action="/adm/email"  name="compemail" method="post"'.
                 ' enctype="multipart/form-data">'."\n".
@@ -851,7 +1179,7 @@ sub compout {
 	    my $selectlink=&Apache::loncommon::selectstudent_link
 	    ('compemail','recuname','recdomain');
 	    $r->print(<<"ENDREC");
-<tr><td>$lt{'us'}:</td><td><input type="text" size="12" name="recuname" value="$ENV{'form.recname'}"></td><td rowspan="2">$selectlink</td></tr>
+<tr><td>$lt{'us'}:</td><td><input type="text" size="12" name="recuname" value="$env{'form.recname'}" /></td><td rowspan="2">$selectlink</td></tr>
 <tr><td>$lt{'do'}:</td>
 <td>$domform</td></tr>
 ENDREC
@@ -866,11 +1194,15 @@ ENDREC
 <tr><td>$lt{'sb'}:</td><td><input type="text" size="50" name="subject" value="$dissub" />
 </td></tr></table>
 $latexHelp
-<textarea name="message" cols="80" rows="15" wrap="hard">$dismsg
+<textarea name="message" id="message" cols="80" rows="15" wrap="hard">$dismsg
 </textarea></p><br />
 $dispcrit
+$disbase
+<input type="hidden" name="folder" value="$folder" />
+<input type="hidden" name="dismode" value="$dismode" />
 <input type="submit" name="send" value="$func $lt{'ma'}" />
-<input type="submit" name="cancel" value="$lt{'ca'}" />
+<input type="submit" name="cancel" value="$lt{'ca'}" /><hr />
+$citation
 ENDCOMP
     } else { # $broadcast is 'upload'
 	$r->print(<<ENDUPLOAD);
@@ -881,7 +1213,7 @@ ENDCOMP
 Subject: <input type="text" size="50" name="subject" />
 </p>
 <p>General message text<br />
-<textarea name="message" cols="60" rows="10" wrap="hard">$dismsg
+<textarea name="message" id="message" cols="60" rows="10" wrap="hard">$dismsg
 </textarea></p>
 <p>
 The file format for the uploaded portion of the message is:
@@ -903,30 +1235,60 @@ ENDUPLOAD
     if ($broadcast eq 'group') {
        &discourse;
     }
-    $r->print('</form>');
+    $r->print('</form>'.
+	      &Apache::lonfeedback::generate_preview_button('compemail','message').
+	      &Apache::lonhtmlcommon::htmlareaselectactive('message'));
 }
 
 # ---------------------------------------------------- Display all face to face
 
+sub retrieve_instructor_comments {
+    my ($user,$domain)=@_;
+    my $target=$env{'form.grade_target'};
+    if (! $env{'request.course.id'}) { return; }
+    if (! &Apache::lonnet::allowed('srm',$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 '');
+        next if ($content{'subject'} !~ /^Record/);
+	# &Apache::lonfeedback::newline_to_br(\$content{'message'});
+	$result.='Recorded by '.
+            $content{'sendername'}.'@'.$content{'senderdomain'}."\n";
+        $result.=
+            &Apache::lontexconvert::msgtexconverted($content{'message'})."\n";
+     }
+    return $result;
+}
+
 sub disfacetoface {
     my ($r,$user,$domain)=@_;
-    unless ($ENV{'request.course.id'}) { return; }
-    unless (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'})) {
+    my $target=$env{'form.grade_target'};
+    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'},
+			 $env{'course.'.$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 '');
-        $content{'message'}=~s/\n/\<br\>/g;
+	&Apache::lonfeedback::newline_to_br(\$content{'message'});
         if ($content{'subject'}=~/^Record/) {
 	    $result.='<h3>'.&mt('Record').'</h3>';
+        } elsif ($content{'subject'}=~/^Broadcast/) {
+            $result .='<h3>'.&mt('Broadcast Message').'</h3>';
         } else {
-            $result.='<h3>'.&mt('Sent Message').'</h3>';
+            $result.='<h3>'.&mt('Critical Message').'</h3>';
             %content=&unpackagemsg($content{'message'});
             $content{'message'}=
                 '<b>'.&mt('Subject').': '.$content{'subject'}.'</b><br />'.
@@ -937,13 +1299,17 @@ sub disfacetoface {
  &Apache::loncommon::plainname($content{'sendername'},$content{'senderdomain'}),$content{'sendername'},$content{'senderdomain'}).'</b> ('.
 $content{'sendername'}.'@'.
             $content{'senderdomain'}.') '.$content{'time'}.
-            '<br /><blockquote>'.
+            '<br /><pre>'.
               &Apache::lontexconvert::msgtexconverted($content{'message'}).
-	      '</blockquote>';
+	      '</pre>';
      }
     # Check to see if there were any messages.
     if ($result eq '') {
-        $r->print("<p><b>".&mt("No notes, face-to-face discussion records, or critical messages in this course.")."</b></p>");
+	if ($target ne 'tex') { 
+	    $r->print("<p><b>".&mt("No notes, face-to-face discussion records, critical messages, or broadcast messages in this course.")."</b></p>");
+	} else {
+	    $r->print('\textbf{'.&mt("No notes, face-to-face discussion records, critical messages or broadcast messages in this course.").'}\\\\');
+	}
     } else {
        $r->print($result);
     }
@@ -953,27 +1319,27 @@ $content{'sendername'}.'@'.
 
 sub facetoface {
     my ($r,$stage)=@_;
-    unless (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'})) {
+    unless (&Apache::lonnet::allowed('srm',$env{'request.course.id'})) {
 	return;
     }
     &printheader($r,
 		 '/adm/email?recordftf=query',
-		 "User Notes, Face-to-Face, Critical Messages");
+		 "User Notes, Face-to-Face, Critical Messages, Broadcast Messages");
 # from query string
 
-    if ($ENV{'form.recname'}) { $ENV{'form.recuname'}=$ENV{'form.recname'}; }
-    if ($ENV{'form.recdom'}) { $ENV{'form.recdomain'}=$ENV{'form.recdom'}; }
+    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'};
+    my $defdom=$env{'user.domain'};
 # already filled in
-    if ($ENV{'form.recdomain'}) { $defdom=$ENV{'form.recdomain'}; }
+    if ($env{'form.recdomain'}) { $defdom=$env{'form.recdomain'}; }
 # generate output
     my $domform = &Apache::loncommon::select_dom_form($defdom,'recdomain');
     my $stdbrws = &Apache::loncommon::selectstudent_link
 	('stdselect','recuname','recdomain');
     my %lt=&Apache::lonlocal::texthash('user' => 'Username',
 				       'dom' => 'Domain',
-				       'head' => 'User Notes, Records of Face-To-Face Discussions, and Critical Messages in Course',
+				       'head' => 'User Notes, Records of Face-To-Face Discussions, Critical Messages, and Broadcast Messages in Course',
 				       'subm' => 'Retrieve discussion and message records',
 				       'newr' => 'New Record (record is visible to course faculty and staff)',
 				       'post' => 'Post this Record');
@@ -982,7 +1348,7 @@ sub facetoface {
 <form method="post" action="/adm/email" name="stdselect">
 <input type="hidden" name="recordftf" value="retrieve" />
 <table>
-<tr><td>$lt{'user'}:</td><td><input type="text" size="12" name="recuname" value="$ENV{'form.recuname'}" /></td>
+<tr><td>$lt{'user'}:</td><td><input type="text" size="12" name="recuname" value="$env{'form.recuname'}" /></td>
 <td rowspan="2">
 $stdbrws
 <input type="submit" value="$lt{'subm'}" /></td>
@@ -993,23 +1359,23 @@ $stdbrws
 </form>
 ENDTREC
     if (($stage ne 'query') &&
-        ($ENV{'form.recdomain'}) && ($ENV{'form.recuname'})) {
-        chomp($ENV{'form.newrecord'});
-        if ($ENV{'form.newrecord'}) {
+        ($env{'form.recdomain'}) && ($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'},
+            $env{'course.'.$env{'request.course.id'}.'.num'},
+            $env{'course.'.$env{'request.course.id'}.'.domain'},
             &mt('Record').
-	     ' ['.$ENV{'form.recuname'}.':'.$ENV{'form.recdomain'}.']',
-	    $ENV{'form.newrecord'});
+	     ' ['.$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'});
+        $r->print('<h3>'.&Apache::loncommon::plainname($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="$ENV{'form.recuname'}" type="hidden" />
+<input name="recdomain" value="$env{'form.recdomain'}" type="hidden" />
+<input name="recuname" value="$env{'form.recuname'}" type="hidden" />
 ENDRHEAD
         $r->print(<<ENDBFORM);
 <hr />$lt{'newr'}<br />
@@ -1022,15 +1388,394 @@ ENDBFORM
     }
 }
 
+# ----------------------------------------------------------- Blocking during exams
+
+sub examblock {
+    my ($r,$action) = @_;
+    unless ($env{'request.course.id'}) { return;}
+    unless (&Apache::lonnet::allowed('srm',$env{'request.course.id'})) { $r->print('Not allowed'); }
+    my %lt=&Apache::lonlocal::texthash(
+            'comb' => 'Communication Blocking',
+            'cbds' => 'Communication blocking during scheduled exams',
+            'desc' => 'You can use communication blocking to prevent students enrolled in this course from displaying LON-CAPA messages sent by other students during an online exam. As blocking of communication could potentially interrupt legitimate communication between students who are also both enrolled in a different LON-CAPA course, please be careful that you select the correct start and end times for your scheduled exam when setting or modifying these parameters.',
+             'mecb' => 'Modify existing communication blocking periods',
+             'ncbc' => 'No communication blocks currently stored'
+    );
+
+    my %ltext = &Apache::lonlocal::texthash(
+            'dura' => 'Duration',
+            'setb' => 'Set by',
+            'even' => 'Event',
+            'actn' => 'Action',
+            'star' => 'Start',
+            'endd' => 'End'
+    );
+
+    &printheader($r,'/adm/email?block=display',$lt{'comb'});
+    $r->print('<h3>'.$lt{'cbds'}.'</h3>');
+
+    if ($action eq 'store') {
+        &blockstore($r);
+    }
+
+    $r->print($lt{'desc'}.'<br /><br />
+               <form name="blockform" method="post" action="/adm/email?block=store">
+             ');
+
+    $r->print('<h4>'.$lt{'mecb'}.'</h4>');
+    my %records = ();
+    my $blockcount = 0;
+    my $parmcount = 0;
+    &get_blockdates(\%records,\$blockcount);
+    if ($blockcount > 0) {
+        $parmcount = &display_blocker_status($r,\%records,\%ltext);
+    } else {
+        $r->print($lt{'ncbc'}.'<br /><br />');
+    }
+    &display_addblocker_table($r,$parmcount,\%ltext);
+    my $endbody=&Apache::loncommon::endbodytag();
+    $r->print(<<"END");
+<br />
+<input type="hidden" name="blocktotal" value="$blockcount" />
+<input type ="submit" value="Save Changes" />
+</form>
+$endbody
+</html>
+END
+    return;
+}
+
+sub blockstore {
+    my $r = shift;
+    my %lt=&Apache::lonlocal::texthash(
+            'tfcm' => 'The following changes were made',
+            'cbps' => 'communication blocking period(s)',
+            'werm' => 'was/were removed',
+            'wemo' => 'was/were modified',
+            'wead' => 'was/were added',
+            'ncwm' => 'No changes were made.' 
+    );
+    my %adds = ();
+    my %removals = ();
+    my %cancels = ();
+    my $modtotal = 0;
+    my $canceltotal = 0;
+    my $addtotal = 0;
+    my %blocking = ();
+    $r->print('<h3>'.$lt{'head'}.'</h3>');
+    foreach (keys %env) {
+        if ($_ =~ m/^form\.modify_(\w+)$/) {
+            $adds{$1} = $1;
+            $removals{$1} = $1;
+            $modtotal ++;
+        } elsif ($_ =~ m/^form\.cancel_(\d+)$/) {
+            $cancels{$1} = $1;
+            unless ( defined($removals{$1}) ) {
+                $removals{$1} = $1;
+                $canceltotal ++;
+            }
+        } elsif ($_ =~ m/^form\.add_(\d+)$/) {
+            $adds{$1} = $1;
+            $addtotal ++;
+        }
+    }
+
+    foreach (keys %removals) {
+        my $hashkey = $env{'form.key_'.$_};
+        &Apache::lonnet::del('comm_block',["$hashkey"],
+                         $env{'course.'.$env{'request.course.id'}.'.domain'},
+                         $env{'course.'.$env{'request.course.id'}.'.num'}
+                         );
+    }
+    foreach (keys %adds) {
+        unless ( defined($cancels{$_}) ) {
+            my ($newstart,$newend) = &get_dates_from_form($_);
+            my $newkey = $newstart.'____'.$newend;
+            $blocking{$newkey} = $env{'user.name'}.'@'.$env{'user.domain'}.':'.$env{'form.title_'.$_};
+        }
+    }
+    if ($addtotal + $modtotal > 0) {
+        &Apache::lonnet::put('comm_block',\%blocking,
+                     $env{'course.'.$env{'request.course.id'}.'.domain'},
+                     $env{'course.'.$env{'request.course.id'}.'.num'}
+                     );
+    }
+    my $chgestotal = $canceltotal + $modtotal + $addtotal;
+    if ($chgestotal > 0) {
+        $r->print($lt{'tfcm'}.'<ul>');
+        if ($canceltotal > 0) {
+            $r->print('<li>'.$canceltotal.' '.$lt{'cbps'},' '.$lt{'werm'}.'</li>');
+        }
+        if ($modtotal > 0) {
+            $r->print('<li>'.$modtotal.' '.$lt{'cbps'},' '.$lt{'wemo'}.'</li>');
+        }
+        if ($addtotal > 0) {
+            $r->print('<li>'.$addtotal.' '.$lt{'cbps'},' '.$lt{'wead'}.'</li>');
+        }
+        $r->print('</ul>');
+    } else {
+        $r->print($lt{'ncwm'});
+    }
+    $r->print('<br />');
+    return;
+}
+
+sub get_dates_from_form {
+    my $item = shift;
+    my $startdate = &Apache::lonhtmlcommon::get_date_from_form('startdate_'.$item);
+    my $enddate   = &Apache::lonhtmlcommon::get_date_from_form('enddate_'.$item);
+    return ($startdate,$enddate);
+}
+
+sub get_blockdates {
+    my ($records,$blockcount) = @_;
+    $$blockcount = 0;
+    %{$records} = &Apache::lonnet::dump('comm_block',
+                         $env{'course.'.$env{'request.course.id'}.'.domain'},
+                         $env{'course.'.$env{'request.course.id'}.'.num'}
+                         );
+    $$blockcount = keys %{$records};
+                                                                                                             
+    foreach (keys %{$records}) {
+        if ($_ eq 'error: 2 tie(GDBM) Failed while attempting dump') {
+            $$blockcount = 0;
+            last;
+        }
+    }
+}
+
+sub display_blocker_status {
+    my ($r,$records,$ltext) = @_;
+    my $parmcount = 0;
+    my @bgcols = ("#eeeeee","#dddddd");
+    my $function = &Apache::loncommon::get_users_function();
+    my $color = &Apache::loncommon::designparm($function.'.tabbg',
+                                                    $env{'user.domain'});
+    my %lt = &Apache::lonlocal::texthash(
+        'modi' => 'Modify',
+        'canc' => 'Cancel',
+    );
+    $r->print(<<"END");
+<table border="0" cellpadding="0" cellspacing="0">
+ <tr>
+  <td width="100%" bgcolor="#000000">
+   <table width="100%" border="0" cellpadding="1" cellspacing="0">
+    <tr>
+     <td width="100%" bgcolor="#000000">
+      <table border="0" cellpadding="3" cellspacing="3" bgcolor="#FFFFFF">
+       <tr bgcolor="$color">
+        <td><b>$$ltext{'dura'}</b></td>
+        <td><b>$$ltext{'setb'}</b></td>
+        <td><b>$$ltext{'even'}</b></td>
+        <td><b>$$ltext{'actn'}?</b></td>
+       </tr>
+END
+    foreach (sort keys %{$records}) {
+        my $iter = $parmcount%2;
+        my $onchange = 'onFocus="javascript:window.document.forms['.
+                       "'blockform'].elements['modify_".$parmcount."'].".
+                       'checked=true;"';
+        my ($start,$end) = split/____/,$_;
+        my $startform = &Apache::lonhtmlcommon::date_setter('blockform','startdate_'.$parmcount,$start,$onchange);
+        my $endform = &Apache::lonhtmlcommon::date_setter('blockform','enddate_'.$parmcount,$end,$onchange);
+        my ($setter,$title) = split/:/,$$records{$_};
+        my ($setuname,$setudom) = split/@/,$setter;
+        my $settername = &Apache::loncommon::plainname($setuname,$setudom);
+        $r->print(<<"END");
+       <tr bgcolor="$bgcols[$iter]">
+        <td>$$ltext{'star'}:&nbsp;$startform<br/>$$ltext{'endd'}:&nbsp;&nbsp;$endform</td>
+        <td>$settername</td>
+        <td><input type="text" name="title_$parmcount" size="15" value="$title" /><input type="hidden" name="key_$parmcount" value="$_" /></td>
+        <td><label>$lt{'modi'}?&nbsp;<input type="checkbox" name="modify_$parmcount" /></label><br /><label>$lt{'canc'}?&nbsp;&nbsp;<input type="checkbox" name="cancel_$parmcount" /></label>
+       </tr>
+END
+        $parmcount ++;
+    }
+    $r->print(<<"END");
+      </table>
+     </td>
+    </tr>
+   </table>
+  </td>
+ </tr>
+</table>
+<br />
+<br />
+END
+    return $parmcount;
+}
+
+sub display_addblocker_table {
+    my ($r,$parmcount,$ltext) = @_;
+    my $start = time;
+    my $end = $start + (60 * 60 * 2); #Default is an exam of 2 hours duration.
+    my $onchange = 'onFocus="javascript:window.document.forms['.
+                   "'blockform'].elements['add_".$parmcount."'].".
+                   'checked=true;"';
+    my $startform = &Apache::lonhtmlcommon::date_setter('blockform','startdate_'.$parmcount,$start,$onchange);
+    my $endform = &Apache::lonhtmlcommon::date_setter('blockform','enddate_'.$parmcount,$end,$onchange);
+    my $function = &Apache::loncommon::get_users_function();
+    my $color = &Apache::loncommon::designparm($function.'.tabbg',
+                                                    $env{'user.domain'});
+    my %lt = &Apache::lonlocal::texthash(
+        'addb' => 'Add block',
+        'exam' => 'e.g., Exam 1',
+        'addn' => 'Add new communication blocking periods'
+    );
+    $r->print(<<"END");
+<h4>$lt{'addn'}</h4> 
+<table border="0" cellpadding="0" cellspacing="0">
+ <tr>
+  <td width="100%" bgcolor="#000000">
+   <table width="100%" border="0" cellpadding="1" cellspacing="0">
+    <tr>
+     <td width="100%" bgcolor="#000000">
+      <table border="0" cellpadding="3" cellspacing="3" bgcolor="#FFFFFF">
+       <tr bgcolor="#CCCCFF">
+        <td><b>$$ltext{'dura'}</b></td>
+        <td><b>$$ltext{'even'} $lt{'exam'}</b></td>
+        <td><b>$$ltext{'actn'}?</b></td>
+       </tr>
+       <tr bgcolor="#eeeeee">
+        <td>$$ltext{'star'}:&nbsp;$startform<br />$$ltext{'endd'}:&nbsp;&nbsp;$endform</td>
+        <td><input type="text" name="title_$parmcount" size="15" value="" /></td>
+        <td><label>$lt{'addb'}?&nbsp;<input type="checkbox" name="add_$parmcount" value="1" /></label></td>
+       </tr>
+      </table>
+     </td>
+    </tr>
+   </table>
+  </td>
+ </tr>
+</table>
+END
+    return;
+}
+
+sub blockcheck {
+    my ($setters,$startblock,$endblock) = @_;
+    # Retrieve active student roles and active course coordinator/instructor roles
+    my @livecses = ();
+    my @staffcses = ();
+    $$startblock = 0;
+    $$endblock = 0;
+    foreach (keys %env) {
+        if ($_ =~ m-^user\.role\.(st|cc|in)\./(.+)$-) {
+            my $role = $1;
+            my $cse = $2;
+            $cse =~ s|/|_|;
+            if ($env{$_} =~ m/^(\d*)\.(\d*)$/) {
+                unless (($2 > 0 && $2 < time) || ($1 > time)) {
+                    if ($role eq 'st') {
+                        push @livecses, $cse;
+                    } else {
+                        unless (grep/^$cse$/,@staffcses) {
+                            push @staffcses, $cse;
+                        }
+                    }
+                }
+            }
+        } elsif ($_ =~ m-user\.role\.cr/(\w+)/(\w+)/([^/]+)\./(.+)$- ) { 
+            my $rolepriv = $env{'user.role..rolesdef_'.$3};
+        }
+    }
+    # Retrieve blocking times and identity of blocker for active courses for students.
+    if (@livecses > 0) {
+        foreach my $cse (@livecses) {
+            my ($cdom,$crs) = split/_/,$cse;
+            if ( (grep/^$cse$/,@staffcses) && ($env{'request.role'} !~ m-^st\./$cdom/$crs$-) ) {
+                next;
+            } else {
+                %{$$setters{$cse}} = ();
+                @{$$setters{$cse}{'staff'}} = ();
+                @{$$setters{$cse}{'times'}} = ();
+                my %records = &Apache::lonnet::dump('comm_block',$cdom,$crs);
+                foreach (keys %records) {
+                    if ($_ =~ m/^(\d+)____(\d+)$/) {
+                        if ($1 <= time && $2 >= time) {
+                            my ($staff,$title) = split/:/,$records{$_};
+                            push @{$$setters{$cse}{'staff'}}, $staff;
+                            push @{$$setters{$cse}{'times'}}, $_;
+                            if ( ($$startblock == 0) || ($$startblock > $1) ) {
+                                $$startblock = $1;
+                            }
+                            if ( ($$endblock == 0) || ($$endblock < $2) ) {
+                                $$endblock = $2;
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+sub build_block_table {
+    my ($r,$startblock,$endblock,$setters) = @_;
+    my $function = &Apache::loncommon::get_users_function();
+    my $color = &Apache::loncommon::designparm($function.'.tabbg',
+                                                    $env{'user.domain'});
+    my %lt = &Apache::lonlocal::texthash(
+        'cacb' => 'Currently active communication blocks',
+        'cour' => 'Course',
+        'dura' => 'Duration',
+        'blse' => 'Block set by'
+    ); 
+    $r->print(<<"END");
+<br /<br />$lt{'cacb'}:<br /><br />
+<table border="0" cellpadding="0" cellspacing="0">
+ <tr>
+  <td width="100%" bgcolor="#000000">
+   <table width="100%" border="0" cellpadding="1" cellspacing="0">
+    <tr>
+     <td width="100%" bgcolor="#000000">
+      <table border="0" cellpadding="3" cellspacing="3" bgcolor="#FFFFFF">
+       <tr bgcolor="$color">
+        <td><b>$lt{'cour'}</b></td>
+        <td><b>$lt{'dura'}</b></td>
+        <td><b>$lt{'blse'}</b></td>
+       </tr>
+END
+    foreach (keys %{$setters}) {
+        my %courseinfo=&Apache::lonnet::coursedescription($_);
+        for (my $i=0; $i<@{$$setters{$_}{staff}}; $i++) {
+            my ($uname,$udom) = split/\@/,$$setters{$_}{staff}[$i];
+            my $fullname = &Apache::loncommon::plainname($uname,$udom);
+            my ($openblock,$closeblock) = split/____/,$$setters{$_}{times}[$i];
+            $openblock = &Apache::lonlocal::locallocaltime($openblock);
+            $closeblock= &Apache::lonlocal::locallocaltime($closeblock);
+            $r->print('<tr><td>'.$courseinfo{'description'}.'</td>'.
+                      '<td>'.$openblock.' to '.$closeblock.'</td>'.
+                      '<td>'.$fullname.' ('.$uname.'@'.$udom.
+                      ')</td></tr>');
+        }
+    }
+    $r->print('</table></td></tr></table></td></tr></table>');
+}
+
 # ----------------------------------------------------------- Display a message
 
 sub displaymessage {
-    my ($r,$msgid)=@_;
-    &statuschange($msgid,'read');
-    my %message=&Apache::lonnet::get('nohist_email',[$msgid]);
+    my ($r,$msgid,$folder)=@_;
+    my $suffix=&foldersuffix($folder);
+    my %blocked = ();
+    my %setters = ();
+    my $startblock = 0;
+    my $endblock = 0;
+    my $numblocked = 0;
+# info to generate "next" and "previous" buttons and check if message is blocked
+    &blockcheck(\%setters,\$startblock,\$endblock);
+    my @messages=&sortedmessages(\%blocked,$startblock,$endblock,\$numblocked,$folder);
+    if ( $blocked{$msgid} eq 'ON' ) {
+        &printheader($r,'/adm/email',&mt('Display a Message'));
+        $r->print(&mt('You attempted to display a message that is currently blocked because you are enrolled in one or more courses for which there is an ongoing online exam.'));
+        &build_block_table($r,$startblock,$endblock,\%setters);
+        return;
+    }
+    &statuschange($msgid,'read',$folder);
+    my %message=&Apache::lonnet::get('nohist_email'.$suffix,[$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);
@@ -1054,9 +1799,10 @@ sub displaymessage {
 	      '<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='.$ENV{'form.sortedby'}.
-	      '"><b>'.&mt('Display all Messages').'</b></a></td>');
+	      '"><b>'.&mt('Delete').'</b></a></td>'.
+	      '<td><a href="/adm/email?'.$sqs.
+	      ($env{'form.dismode'} eq 'new'?'&folder=new':'').
+	      '"><b>'.&mt('Back to Folder Display').'</b></a></td>');
     if ($counter > 0){
 	$r->print('<td><a href="/adm/email?display='.$messages[$counter-1]->[5].$sqs.
 		  '"><b>'.&mt('Previous').'</b></a></td>');
@@ -1066,27 +1812,85 @@ sub displaymessage {
 		  '"><b>'.&mt('Next').'</b></a></td>');
     }
     $r->print('</tr></table>');
+    if ($env{'user.adv'}) {
+	$r->print('<table border="2" width="100%"><tr bgcolor="#FFAAAA"><td>'.&mt('Currently available actions (will open extra window)').':</td>');
+	my $symb=&Apache::lonnet::symbread($content{'baseurl'});      
+	if (&Apache::lonnet::allowed('vgr',$env{'request.course.id'})) {
+		$r->print('<td><b>'.&Apache::loncommon::track_student_link(&mt('View recent activity'),$content{'sendername'},$content{'senderdomain'},'check').'</b></td>');
+	    }
+	if (&Apache::lonnet::allowed('opa',$env{'request.course.id'}) && $symb) {
+	    $r->print('<td><b>'.&Apache::loncommon::pprmlink(&mt('Set/Change parameters'),$content{'sendername'},$content{'senderdomain'},$symb,'check').'</b></td>');
+	}
+	if (&Apache::lonnet::allowed('mgr',$env{'request.course.id'}) && $symb) {
+	    $r->print('<td><b>'.&Apache::loncommon::pgrdlink(&mt('Set/Change grades'),$content{'sendername'},$content{'senderdomain'},$symb,'check').'</b></td>');
+	}
+	$r->print('</tr></table>');
+    }
     $r->print('<br /><b>'.&mt('Subject').':</b> '.$content{'subject'}.
-	      '<br /><b>'.&mt('From').':</b> '.
+	      ($folder ne 'sent'?'<br /><b>'.&mt('From').':</b> '.
 	      &Apache::loncommon::aboutmewrapper(
 						 &Apache::loncommon::plainname($content{'sendername'},$content{'senderdomain'}),
 						 $content{'sendername'},$content{'senderdomain'}).' ('.
 	      $content{'sendername'}.' at '.
-	      $content{'senderdomain'}.') '.
+	      $content{'senderdomain'}.') ':'<br /><b>'.&mt('To').':</b> '.
+	      &Apache::loncommon::aboutmewrapper(
+						 &Apache::loncommon::plainname($content{'recuser'},$content{'recdomain'}),
+						 $content{'recuser'},$content{'recdomain'}).' ('.
+	      $content{'recuser'}.' at '.
+	      $content{'recdomain'}.') ').
 	      ($content{'courseid'}?'<br /><b>'.&mt('Course').':</b> '.$courseinfo{'description'}.
 	       ($content{'coursesec'}?' ('.&mt('Group/Section').': '.$content{'coursesec'}.')':''):'').
 	      '<br /><b>'.&mt('Time').':</b> '.$content{'time'}.
+	      ($content{'baseurl'}?'<br /><b>'.&mt('Refers to').':</b> <a href="'.$content{'baseurl'}.'">'.
+	       $content{'baseurl'}.' ('.&Apache::lonnet::gettitle($content{'baseurl'}).')</a>':'').
 	      '<p><pre>'.
 	      &Apache::lontexconvert::msgtexconverted($content{'message'},1).
-	      '</pre><hr />'.$content{'citation'}.'</p>');
+	      '</pre><hr />'.&displayresource(%content).'</p>');
     return;   
 }
 
+# =========================================================== Show the citation
+
+sub displayresource {
+    my %content=@_;
+#
+# If the recipient is in the same course that the message was sent from and
+# has sufficient privileges, show "all details," else show citation
+#
+    if (($env{'request.course.id'} eq $content{'courseid'})
+     && (&Apache::lonnet::allowed('vgr',$content{'courseid'}))) {
+	my $symb=&Apache::lonnet::symbread($content{'baseurl'});
+# Could not get a symb, give up
+	unless ($symb) { return $content{'citation'}; }
+# Have a symb, can render
+	return '<h2>'.&mt('Current attempts of student (if applicable)').'</h2>'.
+	    &Apache::loncommon::get_previous_attempt($symb,
+						     $content{'sendername'},
+						     $content{'senderdomain'},
+						     $content{'courseid'}).
+	    '<hr /><h2>'.&mt('Current screen output (if applicable)').'</h2>'.
+	    &Apache::loncommon::get_student_view($symb,
+						 $content{'sendername'},
+						 $content{'senderdomain'},
+						 $content{'courseid'}).
+	    '<h2>'.&mt('Correct Answer(s) (if applicable)').'</h2>'.
+	    &Apache::loncommon::get_student_answers($symb,
+						    $content{'sendername'},
+						    $content{'senderdomain'},
+						    $content{'courseid'});
+    } else {
+	return $content{'citation'};
+    }
+}
+
 # ================================================================== The Header
 
 sub header {
     my ($r,$title,$baseurl)=@_;
-    $r->print('<html><head><title>Communication and Messages</title>');
+    $r->print(&Apache::lonxml::xmlbegin().
+	      '<head>'.&Apache::lonxml::fontsettings().
+	      '<title>Communication and Messages</title>'.
+	      &Apache::lonhtmlcommon::htmlareaheaders());
     if ($baseurl) {
 	$r->print("<base href=\"http://$ENV{'SERVER_NAME'}/$baseurl\" />");
     }
@@ -1107,6 +1911,144 @@ sub printheader {
     &header($r,$title,$baseurl);
 }
 
+# ------------------------------------------------------------ Store the comment
+
+sub storecomment {
+    my ($r)=@_;
+    my $msgtxt=&Apache::lonfeedback::clear_out_html($env{'form.message'});
+    my $cleanmsgtxt='';
+    foreach (split(/[\n\r]/,$msgtxt)) {
+	unless ($_=~/^\s*(\>|\&gt\;)/) {
+	    $cleanmsgtxt.=$_."\n";
+	}
+    }
+    my $key=&Apache::lonnet::escape($env{'form.baseurl'}).'___'.time;
+    &Apache::lonnet::put('nohist_stored_comments',{ $key => $cleanmsgtxt });
+}
+
+sub storedcommentlisting {
+    my ($r)=@_;
+    my %msgs=&Apache::lonnet::dump('nohist_stored_comments',undef,undef,
+       '^'.&Apache::lonnet::escape(&Apache::lonnet::escape($env{'form.showcommentbaseurl'})));
+    $r->print(&Apache::lonxml::xmlbegin().'<head>'.
+	      &Apache::lonxml::fontsettings().'</head><body>');
+    if ((keys %msgs)[0]=~/^error\:/) {
+	$r->print(&mt('No stored comments yet.'));
+    } else {
+	my $found=0;
+	foreach (sort keys %msgs) {
+	    $r->print("\n".$msgs{$_}."<hr />");
+	    $found=1;
+	}
+	unless ($found) {
+	    $r->print(&mt('No stored comments yet for this resource.'));
+	}
+    }
+}
+
+# ---------------------------------------------------------------- Send an email
+
+sub sendoffmail {
+    my ($r,$folder)=@_;
+    my $suffix=&foldersuffix($folder);
+    my $sendstatus='';
+    if ($env{'form.send'}) {
+	&printheader($r,'','Messages being sent.');
+	$r->rflush();
+	my %content=();
+	undef %content;
+	if ($env{'form.forwid'}) {
+	    my $msgid=$env{'form.forwid'};
+	    my %message=&Apache::lonnet::get('nohist_email'.$suffix,[$msgid]);
+	    %content=&unpackagemsg($message{$msgid},1);
+	    &statuschange($msgid,'forwarded',$folder);
+	    $env{'form.message'}.="\n\n-- Forwarded message --\n\n".
+		$content{'message'};
+	}
+	if ($env{'form.replyid'}) {
+	    my $msgid=$env{'form.replyid'};
+	    my %message=&Apache::lonnet::get('nohist_email'.$suffix,[$msgid]);
+	    %content=&unpackagemsg($message{$msgid},1);
+	    &statuschange($msgid,'replied',$folder);
+	}
+	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 $msgtxt;
+            if ((($env{'form.critmsg'}) || ($env{'form.sendbck'})) &&
+                (&Apache::lonnet::allowed('srm',$env{'request.course.id'}))) {
+                $msgtxt=&Apache::lonfeedback::clear_out_html($env{'form.message'},1);
+            } else {  
+	        $msgtxt=&Apache::lonfeedback::clear_out_html($env{'form.message'});
+            }
+	    if ($toaddr{$_}) { $msgtxt.='<hr />'.$toaddr{$_}; }
+	    my $thismsg;    
+	    if ((($env{'form.critmsg'}) || ($env{'form.sendbck'})) && 
+		(&Apache::lonnet::allowed('srm',$env{'request.course.id'}))) {
+		$r->print(&mt('Sending critical message').' '.$recuname.'@'.$recdomain.': ');
+		$thismsg=&user_crit_msg($recuname,$recdomain,
+					&Apache::lonfeedback::clear_out_html($env{'form.subject'}),
+					$msgtxt,
+					$env{'form.sendbck'},$env{'form.permanent'});
+	    } else {
+		$r->print(&mt('Sending').' '.$recuname.'@'.$recdomain.': ');
+		$thismsg=&user_normal_msg($recuname,$recdomain,
+					  &Apache::lonfeedback::clear_out_html($env{'form.subject'}),
+					  $msgtxt,
+					  $content{'citation'},undef,undef,$env{'form.permanent'});
+		if (($env{'request.course.id'}) && ($env{'form.sendmode'} eq 'group')) {
+		    &user_normal_msg_raw(
+					 $env{'course.'.$env{'request.course.id'}.'.num'},
+					 $env{'course.'.$env{'request.course.id'}.'.domain'},
+					 'Broadcast ['.$recuname.':'.$recdomain.']',
+					 $msgtxt);
+		}
+	    }
+	    $r->print($thismsg.'<br />');
+	    $sendstatus.=' '.$thismsg;
+	}
+    } else {
+	&printheader($r,'','No messages sent.'); 
+    }
+    if ($sendstatus=~/^(\s*(?:ok|con_delayed)\s*)*$/) {
+	$r->print('<br /><font color="green">'.&mt('Completed.').'</font>');
+	if ($env{'form.displayedcrit'}) {
+	    &discrit($r);
+	} else {
+	    &Apache::loncommunicate::menu($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')
+		  );
+    }
+}
 
 # ===================================================================== Handler
 
@@ -1124,10 +2066,14 @@ sub handler {
     &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'};
+         'recordftf','sortedby','block','folder','startdis','interdis',
+	 'showcommentbaseurl','dismode']);
+    $sqs='&sortedby='.$env{'form.sortedby'};
+
 # ------------------------------------------------------ They checked for email
-    &Apache::lonnet::put('email_status',{'recnewemail'=>0});
+    unless ($env{'form.block'}) {
+        &Apache::lonnet::put('email_status',{'recnewemail'=>0});
+    }
 
 # ----------------------------------------------------------------- Breadcrumbs
 
@@ -1137,15 +2083,57 @@ sub handler {
           text=>"Communication/Messages",
           faq=>12,bug=>'Communication Tools',});
 
+# ------------------------------------------------------------------ Get Folder
+
+    my $folder=$env{'form.folder'};
+    unless ($folder) { 
+	$folder=''; 
+    } else {
+	$sqs.='&folder='.&Apache::lonnet::escape($folder);
+    }
+# ------------------------------------------------------------ Get Display Mode
+
+    my $dismode=$env{'form.dismode'};
+    unless ($dismode) { 
+	$dismode=''; 
+    } else {
+	$sqs.='&dismode='.&Apache::lonnet::escape($dismode);
+    }
+
+# --------------------------------------------------------------------- Display
+
+    $startdis=$env{'form.startdis'};
+    $startdis--;
+    unless ($startdis) { $startdis=0; }
+
+    $interdis=$env{'form.interdis'};
+    unless ($interdis) { $interdis=20; }
+    $sqs.='&interdis='.$interdis;
+
+    if ($env{'form.firstview'}) {
+	$startdis=0;
+    }
+    if ($env{'form.lastview'}) {
+	$startdis=-1;
+    }
+    if ($env{'form.prevview'}) {
+	$startdis--;
+    }
+    if ($env{'form.nextview'}) {
+	$startdis++;
+    }
+    my $postedstartdis=$startdis+1;
+    $sqs.='&startdis='.$postedstartdis;
+
 # --------------------------------------------------------------- Render Output
 
-    if ($ENV{'form.display'}) {
-	&displaymessage($r,$ENV{'form.display'});
-    } elsif ($ENV{'form.replyto'}) {
-	&compout($r,'',$ENV{'form.replyto'});
-    } elsif ($ENV{'form.confirm'}) {
+    if ($env{'form.display'}) {
+	&displaymessage($r,$env{'form.display'},$folder);
+    } elsif ($env{'form.replyto'}) {
+	&compout($r,'',$env{'form.replyto'},undef,undef,$folder,$dismode);
+    } elsif ($env{'form.confirm'}) {
 	&printheader($r,'','Confirmed Receipt');
-	foreach (keys %ENV) {
+	foreach (keys %env) {
 	    if ($_=~/^form\.rec\_(.*)$/) {
 		$r->print('<b>'.&mt('Confirming Receipt').':</b> '.
 			  &user_crit_received($1).'<br>');
@@ -1158,116 +2146,78 @@ sub handler {
 	    }
 	}
 	&discrit($r);
-    } elsif ($ENV{'form.critical'}) {
+    } elsif ($env{'form.critical'}) {
 	&printheader($r,'','Displaying Critical Messages');
 	&discrit($r);
-    } elsif ($ENV{'form.forward'}) {
-	&compout($r,$ENV{'form.forward'});
-    } elsif ($ENV{'form.markdel'}) {
+    } elsif ($env{'form.forward'}) {
+	&compout($r,$env{'form.forward'},undef,undef,undef,$folder);
+    } elsif ($env{'form.markdel'}) {
 	&printheader($r,'','Deleted Message');
-	&statuschange($ENV{'form.markdel'},'deleted');
-	&disall($r);
-    } elsif ($ENV{'form.markeddel'}) {
+	&statuschange($env{'form.markdel'},'deleted',$folder);
+	&Apache::loncommunicate::menu($r);
+	&disall($r,($folder?$folder:$dismode));
+    } elsif ($env{'form.markedmove'}) {
 	my $total=0;
-	foreach (keys %ENV) {
+	foreach (keys %env) {
 	    if ($_=~/^form\.delmark_(.*)$/) {
-		&statuschange(&Apache::lonnet::unescape($1),'deleted');
+		&movemsg(&Apache::lonnet::unescape($1),$folder,
+			 $env{'form.movetofolder'});
+		$total++;
+	    }
+	}
+	&printheader($r,'','Moved Messages');
+	$r->print('Moved '.$total.' message(s)<p>');
+	&Apache::loncommunicate::menu($r);
+	&disall($r,($folder?$folder:$dismode));
+    } elsif ($env{'form.markeddel'}) {
+	my $total=0;
+	foreach (keys %env) {
+	    if ($_=~/^form\.delmark_(.*)$/) {
+		&statuschange(&Apache::lonnet::unescape($1),'deleted',$folder);
 		$total++;
 	    }
 	}
 	&printheader($r,'','Deleted Messages');
 	$r->print('Deleted '.$total.' message(s)<p>');
-	&disall($r);
-    } elsif ($ENV{'form.markunread'}) {
+	&Apache::loncommunicate::menu($r);
+	&disall($r,($folder?$folder:$dismode));
+    } elsif ($env{'form.markunread'}) {
 	&printheader($r,'','Marked Message as Unread');
-	&statuschange($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'}) {
-	    &printheader($r,'','Messages being sent.');
-	    $r->rflush();
-	    my %content=();
-	    undef %content;
-	    if ($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{$_}; }
-		my $thismsg;    
-		if ((($ENV{'form.critmsg'}) || ($ENV{'form.sendbck'})) && 
-		    (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'}))) {
-		    $r->print(&mt('Sending critical message').' '.$recuname.'@'.$recdomain.': ');
-		    $thismsg=&user_crit_msg($recuname,$recdomain,
-						    &Apache::lonfeedback::clear_out_html($ENV{'form.subject'}),
-						    $msgtxt,
-						    $ENV{'form.sendbck'});
-		} else {
-		    $r->print(&mt('Sending').' '.$recuname.'@'.$recdomain.': ');
-		    $thismsg=&user_normal_msg($recuname,$recdomain,
-						      &Apache::lonfeedback::clear_out_html($ENV{'form.subject'}),
-						      $msgtxt,
-						      $content{'citation'});
-		}
-		$r->print($thismsg.'<br />');
-		$sendstatus.=' '.$thismsg;
-	    }
+	&statuschange($env{'form.markunread'},'new');
+	&Apache::loncommunicate::menu($r);
+	&disall($r,($folder?$folder:$dismode));
+    } elsif ($env{'form.compose'}) {
+	&compout($r,'','',$env{'form.compose'});
+    } elsif ($env{'form.recordftf'}) {
+	&facetoface($r,$env{'form.recordftf'});
+    } elsif ($env{'form.block'}) {
+        &examblock($r,$env{'form.block'});
+    } elsif ($env{'form.sendmail'}) {
+	&sendoffmail($r,$folder);
+	if ($env{'form.storebasecomment'}) {
+	    &storecomment($r);
 	}
-	if ($sendstatus=~/^(\s*(?:ok|con_delayed)\s*)*$/) {
-	    $r->print('<br /><font color="green">'.&mt('Completed.').'</font>');
-	    if ($ENV{'form.displayedcrit'}) {
-		&discrit($r);
-	    } else {
-		&disall($r);
-	    }
-	} else {
-	    $r->print(
-		      '<h2><font color="red">'.&mt('Could not deliver message').'</font></h2>'.
-		      &mt('Please use the browser "Back" button and correct the recipient addresses')
-		      );
+	if (($env{'form.rsspost'}) && ($env{'request.course.id'})) {
+	    &Apache::lonrss::addentry($env{'course.'.$env{'request.course.id'}.'.num'},
+				      $env{'course.'.$env{'request.course.id'}.'.domain'},
+				      'Course_Announcements',
+				      $env{'form.subject'},
+				      $env{'form.message'},'/adm/communicate','public');
 	}
+	&disall($r,($folder?$folder:$dismode));
+    } elsif ($env{'form.newfolder'}) {
+	&printheader($r,'','New Folder');
+	&makefolder($env{'form.newfolder'});
+	&Apache::loncommunicate::menu($r);
+	&disall($r,$env{'form.newfolder'});
+    } elsif ($env{'form.showcommentbaseurl'}) {
+	&storedcommentlisting($r);
     } else {
 	&printheader($r,'','Display All Messages');
-	&disall($r);
+	&Apache::loncommunicate::menu($r); 
+	&disall($r,($folder?$folder:$dismode));
     }
-    $r->print('</body></html>');
+    $r->print(&Apache::loncommon::endbodytag().'</html>');
     return OK;
 }
 # ================================================= Main program, reset counter