--- loncom/interface/lonmsg.pm	2000/10/19 14:20:17	1.1
+++ loncom/interface/lonmsg.pm	2001/07/26 20:26:43	1.8
@@ -10,26 +10,40 @@
 #
 # 10/05 Gerd Kortemeyer)
 #
-# 10/19 Gerd Kortemeyer
+# 10/19,10/20,10/30,
+# 02/06/01 Gerd Kortemeyer
 
 package Apache::lonmsg;
 
 use strict;
 use Apache::lonnet();
-
+use vars qw($msgcount);
+use HTML::TokeParser;
+use Apache::Constants qw(:common);
 
 # ===================================================================== Package
 
-sub package {
-    var ($subject,$message)=@_;
+sub packagemsg {
+    my ($subject,$message,$citation)=@_;
     $message=~s/\</\&lt\;/g;
     $message=~s/\>/\&gt\;/g;
+    $citation=~s/\</\&lt\;/g;
+    $citation=~s/\>/\&gt\;/g;
     $subject=~s/\</\&lt\;/g;
     $subject=~s/\>/\&gt\;/g;
-    return '<sendername>'.$ENV{'user.name'}.'</sendername>'.
+    my $now=time;
+    $msgcount++;
+    my $partsubj=$subject;
+    $partsubj=&Apache::lonnet::escape($partsubj);
+    $partsubj=substr($partsubj,0,50);
+    my $msgid=&Apache::lonnet::escape(
+           $now.':'.$partsubj.':'.$ENV{'user.name'}.':'.
+           $ENV{'user.domain'}.':'.$msgcount.':'.$$);
+    return $msgid,
+           '<sendername>'.$ENV{'user.name'}.'</sendername>'.
            '<senderdomain>'.$ENV{'user.domain'}.'</senderdomain>'.
            '<subject>'.$subject.'</subject>'.
-	   '<time>'.localtime().'</time>'.
+	   '<time>'.localtime($now).'</time>'.
 	   '<servername>'.$ENV{'SERVER_NAME'}.'</servername>'.
            '<host>'.$ENV{'HTTP_HOST'}.'</host>'.
 	   '<client>'.$ENV{'REMOTE_ADDR'}.'</client>'.
@@ -41,26 +55,258 @@ sub package {
 	   '<courseid>'.$ENV{'request.course.id'}.'</courseid>'.
 	   '<role>'.$ENV{'request.role'}.'</role>'.
 	   '<resource>'.$ENV{'request.filename'}.'</resource>'.
-	   '<message>'.$message.'</message>';
+           '<msgid>'.$msgid.'</msgid>'.
+	   '<message>'.$message.'</message>'.
+	   '<citation>'.$citation.'</citation>';
+}
+
+# ================================================== Unpack message into a hash
+
+sub unpackagemsg {
+    my $message=shift;
+    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;
+       }
+    }
+    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});
+} 
+
 # =============================== Automated message to the author of a resource
 
 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);
-       &Apache::lonnet::put('res_msgs',$filename.'_'.$id => package($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';
 }
 
 # ================================================== Critical message to a user
 
 sub user_crit_msg {
     my ($user,$domain,$subject,$message)=@_;
+# 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') {
+       my $msgid;
+       ($msgid,$message)=&packagemsg($subject,$message);
+       $status=&Apache::lonnet::critical(
+           'put:'.$domain.':'.$user.':critical:'.
+           &Apache::lonnet::escape($msgid).'='.
+           &Apache::lonnet::escape($message),$homeserver);
+    } else {
+       $status='no_host';
+    }
+    &Apache::lonnet::logthis(
+      'Sending critical email '.$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;
+}
+
+# =================================================== Critical message received
+
+sub user_crit_received {
+    my $message=shift;
+    my %contents=&unpackagemsg($message);
+    my $status='rec: '.
+     &user_normal_msg($contents{'sendername'},$contents{'senderdomain'},
+                     'Receipt: '.$ENV{'user.name'}.' at '.$ENV{'user.domain'},
+                     'User '.$ENV{'user.name'}.' at '.$ENV{'user.domain'}.
+                     ' acknowledged receipt of message "'.
+                     $contents{'subject'}.'" dated '.$contents{'time'}.".\n\n"
+                     .'Message ID: '.$contents{'msgid'});
+    $status.=' trans: '.
+     &Apache::lonnet::put('nohist_email',$contents{'msgid'} => $message);
+    $status.=' del: '.
+     &Apache::lonnet::del('critical',$contents{'msgid'});
+    &Apache::lonnet::log($ENV{'user.domain'},$ENV{'user.name'},
+                         $ENV{'user.home'},'Received critical message '.
+                         $contents{'msgid'}.
+                         ', '.$status);
+}
+
+# ======================================================== Normal communication
+
+sub user_normal_msg {
+    my ($user,$domain,$subject,$message,$citation)=@_;
+# 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') {
+       my $msgid;
+       ($msgid,$message)=&packagemsg($subject,$message,$citation);
+       $status=&Apache::lonnet::critical(
+           'put:'.$domain.':'.$user.':nohist_email:'.
+           &Apache::lonnet::escape($msgid).'='.
+           &Apache::lonnet::escape($message),$homeserver);
+    } else {
+       $status='no_host';
+    }
+    &Apache::lonnet::log($ENV{'user.domain'},$ENV{'user.name'},
+                         $ENV{'user.home'},
+      'Sending '.$msgid.' to '.$user.' at '.$domain.' with status: '.$status);
+    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));
+    }
+}
+# ===================================================================== Handler
+
+sub handler {
+    my $r=shift;
+
+# ----------------------------------------------------------- Set document type
+
+  $r->content_type('text/html');
+  $r->send_http_header;
+
+  return OK if $r->header_only;
+
+# --------------------------- Get query string for limited number of parameters
+
+    map {
+       my ($name, $value) = split(/=/,$_);
+       $value =~ tr/+/ /;
+       $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
+       if (($name eq 'display') || ($name eq 'replyto') || 
+           ($name eq 'forward') || ($name eq 'mark') ||
+           ($name eq 'sendreply')) {
+           unless ($ENV{'form.'.$name}) {
+              $ENV{'form.'.$name}=$value;
+	   }
+       }
+    } (split(/&/,$ENV{'QUERY_STRING'}));
+
+# --------------------------------------------------------------- Render Output
+  
+  $r->print('<html><head><title>EMail and Messaging</title></head>');
+  $r->print(
+   '<body bgcolor="#FFFFFF"><img align=right src=/adm/lonIcons/lonlogos.gif>');
+  $r->print('<h1>EMail</h1>');
+  if ($ENV{'form.display'}) {
+      my $msgid=$ENV{'form.display'};
+      &statuschange($msgid,'read');
+      my %message=&Apache::lonnet::get('nohist_email',[$msgid]);
+      my %content=&unpackagemsg($message{$msgid});
+      $r->print('<b>Subject:</b> '.$content{'subject'}.
+             '<br><b>From:</b> '.$content{'sendername'}.' at '.
+                                 $content{'senderdomain'}.
+             '<br><b>Time:</b> '.$content{'time'}.'<hr>Functions: '.
+             '<a href="/adm/email?replyto='.&Apache::lonnet::escape($msgid).
+             '"><b>Reply</b></a><hr><pre>'.
+             $content{'message'}.'</pre><hr>'.$content{'citation'});
+  } elsif ($ENV{'form.replyto'}) {
+      my $msgid=$ENV{'form.replyto'};
+      my %message=&Apache::lonnet::get('nohist_email',[$msgid]);
+      my %content=&unpackagemsg($message{$msgid});
+      my $quotemsg='> '.$content{'message'};
+      $quotemsg=~s/\r/\n/g;
+      $quotemsg=~s/\f/\n/g;
+      $quotemsg=~s/\n+/\n\> /g;
+      my $subject='Re: '.$content{'subject'};
+      $r->print(<<"ENDREPLY");
+<form action="/adm/email" method=post>
+<input type=hidden name=sendreply value="$msgid">
+Subject: <input type=text size=50 name=subject value="$subject"><p>
+<textarea name=message cols=60 rows=10>
+$quotemsg
+</textarea><p>
+<input type=submit value="Send Reply">
+</form>
+ENDREPLY
+  } elsif ($ENV{'form.sendreply'}) {
+      my $msgid=$ENV{'form.sendreply'};
+      my %message=&Apache::lonnet::get('nohist_email',[$msgid]);
+      my %content=&unpackagemsg($message{$msgid});
+      &statuschange($msgid,'replied');
+      $r->print('Sending: '.&user_normal_msg($content{'sendername'},
+                                 $content{'senderdomain'},
+                                 $ENV{'form.subject'},
+                                 $ENV{'form.message'}));
+  } elsif ($ENV{'form.forward'}) {
+  } elsif ($ENV{'form.mark'}) {
+  } else {
+    $r->print('<table border=2><tr><th>&nbsp</th><th>Date</th>'.
+     '<th>Username</th><th>Domain</th><th>Subject</th><th>Status</th></tr>');
+    map {
+        my ($sendtime,$shortsubj,$fromname,$fromdomain,$status)=
+	    &Apache::lonmsg::unpackmsgid($_);
+        if ($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">');
+        }
+        $r->print('<td><a href="/adm/email?display='.$_.
+                  '">Open</a></td><td>'.localtime($sendtime).'</td><td>'.
+                  $fromname.'</td><td>'.$fromdomain.'</td><td>'.
+		      &Apache::lonnet::unescape($shortsubj).'</td><td>'.
+                      $status.'</td></tr>');
+    } sort split(/\&/,&Apache::lonnet::reply('keys:'.
+					$ENV{'user.domain'}.':'.
+                                        $ENV{'user.name'}.':nohist_email',
+                                        $ENV{'user.home'}));
+    $r->print('</table></body></html>');
+
+  }
+  $r->print('</body></html>');
+  return OK;
+
+}
+# ================================================= Main program, reset counter
+
+sub BEGIN {
+    $msgcount=0;
 }
 
 1;