--- loncom/interface/lonfeedback.pm	2001/01/03 16:20:59	1.1
+++ loncom/interface/lonfeedback.pm	2004/06/04 19:27:33	1.92
@@ -1,40 +1,1204 @@
 # The LearningOnline Network
 # Feedback
 #
-# (Internal Server Error Handler
+# $Id: lonfeedback.pm,v 1.92 2004/06/04 19:27:33 albertel Exp $
 #
-# (Login Screen
-# 5/21/99,5/22,5/25,5/26,5/31,6/2,6/10,7/12,7/14,
-# 1/14/00,5/29,5/30,6/1,6/29,7/1,11/9 Gerd Kortemeyer)
+# Copyright Michigan State University Board of Trustees
 #
-# 3/1/1 Gerd Kortemeyer)
+# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
 #
-# 3/1 Gerd Kortemeyer
+# LON-CAPA is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
 #
+# LON-CAPA is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with LON-CAPA; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+#
+# /home/httpd/html/adm/gpl.txt
+#
+# http://www.lon-capa.org/
+#
+###
+
 package Apache::lonfeedback;
 
 use strict;
 use Apache::Constants qw(:common);
+use Apache::lonmsg();
+use Apache::loncommon();
+use Apache::lontexconvert();
+use Apache::lonlocal; # must not have ()
+use Apache::lonhtmlcommon();
 
-sub handler {
-    my $r = shift;
-    $r->content_type('text/html');
-    $r->send_http_header;
-    return OK if $r->header_only;
+sub discussion_open {
+    my ($status)=@_;
+    if (defined($status) &&
+	!($status eq 'CAN_ANSWER' || $status eq 'CANNOT_ANSWER'
+	  || $status eq 'OPEN')) {
+	&Apache::lonnet::logthis(" no open due to status $status");
+	return 0;
+    }
+    my $close=&Apache::lonnet::EXT('resource.0.discussend');
+    if (defined($close) && $close ne '' && $close < time) {
+	&Apache::lonnet::logthis(" no open due to time ");
+	return 0;
+    }
+    &Apache::lonnet::logthis(" open ");
+    return 1;
+}
 
-# --------------------------------------------------- Print login screen header
-    $r->print(<<ENDDOCUMENT);
+sub discussion_visible {
+    my ($status)=@_;
+    if (not &discussion_open($status)) {
+	my $hidden=&Apache::lonnet::EXT('resource.0.discusshide');
+	if (lc($hidden) eq 'yes' or $hidden eq '' or !defined($hidden))  {
+	    &Apache::lonnet::logthis(" hidden ");
+	    return 0;
+	}
+    }
+    &Apache::lonnet::logthis(" visible ");
+    return 1;
+}
+
+sub list_discussion {
+    my ($mode,$status,$symb)=@_;
+
+    if (not &discussion_visible($status)) { return ''; }
+    my @bgcols = ("#cccccc","#eeeeee");
+    my $discussiononly=0;
+    if ($mode eq 'board') { $discussiononly=1; }
+    unless ($ENV{'request.course.id'}) { return ''; }
+    my $crs='/'.$ENV{'request.course.id'};
+    if ($ENV{'request.course.sec'}) {
+	$crs.='_'.$ENV{'request.course.sec'};
+    }                 
+    $crs=~s/\_/\//g;
+    unless ($symb) {
+	$symb=&Apache::lonnet::symbread();
+    }
+    unless ($symb) { return ''; }
+
+# backward compatibility (bulletin boards used to be 'wrapped')
+    my $ressymb=$symb;
+    if ($mode eq 'board') {
+        unless ($ressymb =~ m|bulletin___\d+___adm/wrapper|) {
+            $ressymb=~s|(bulletin___\d+___)|$1adm/wrapper|;
+        }
+    }
+
+# Get discussion display settings for this discussion
+    my $lastkey = $ressymb.'_lastread';
+    my $showkey = $ressymb.'_showonlyunread';
+    my $visitkey = $ressymb.'_visit';
+    my $ondispkey = $ressymb.'_markondisp';
+    my %dischash = &Apache::lonnet::get('nohist_'.$ENV{'request.course.id'}.'_discuss',[$lastkey,$showkey,$visitkey,$ondispkey],$ENV{'user.domain'},$ENV{'user.name'});
+    my %discinfo = ();
+    my $showonlyunread = 0;
+    my $markondisp = 0;
+    my $prevread = 0;
+    my $previous = 0;
+    my $visit = 0;
+    my $newpostsflag = 0;
+
+# Retain identification of "NEW" posts identified in last display, if continuing 'previous' browsing of posts.
+    &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['previous']);
+    $previous = $ENV{'form.previous'};
+    if ($previous > 0) {
+        $prevread = $previous;
+    } elsif (defined($dischash{$lastkey})) {
+        unless ($dischash{$lastkey} eq '') {
+            $prevread = $dischash{$lastkey};
+        }
+    }
+
+# Get discussion display default settings for user
+    my %userenv = &Apache::lonnet::get('environment',['discdisplay','discmarkread'],$ENV{'user.domain'},$ENV{'user.name'});
+    my $discdisplay=$userenv{'discdisplay'};
+    if ($discdisplay eq 'unread') {
+        $showonlyunread = 1;
+    }
+    my $discmarkread=$userenv{'discmarkread'};
+    if ($discmarkread eq 'ondisp') {
+        $markondisp = 1;
+    }
+
+# Override user's default if user specified display setting for this discussion
+    if (defined($dischash{$ondispkey})) {
+        $markondisp = $dischash{$ondispkey};
+    }
+    if ($markondisp) {
+        $discinfo{$lastkey} = time;
+    }
+
+    if (defined($dischash{$showkey})) {
+        $showonlyunread = $dischash{$showkey};
+    }
+
+    if (defined($dischash{$visitkey})) {
+        $visit = $dischash{$visitkey};
+    }
+    $visit ++;
+
+    my $seeid=&Apache::lonnet::allowed('rin',$crs);
+    my $viewgrades=(&Apache::lonnet::allowed('vgr',$crs)
+	&& ($symb=~/\.(problem|exam|quiz|assess|survey|form)$/));
+    my @discussionitems=();
+    my %contrib=&Apache::lonnet::restore($ressymb,$ENV{'request.course.id'},
+			  $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
+			  $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
+    my $visible=0;
+    my @depth=();
+    my @original=();
+    my @index=();
+    my @replies=();
+    my %alldiscussion=();
+    my %notshown = ();
+    my %newitem = ();
+    my $maxdepth=0;
+
+    my $target='';
+    unless ($ENV{'browser.interface'} eq 'textual' ||
+	    $ENV{'environment.remote'} eq 'off' ) {
+	$target='target="LONcom"';
+    }
+    
+    my $now = time;
+    $discinfo{$visitkey} = $visit;
+
+    &Apache::lonnet::put('nohist_'.$ENV{'request.course.id'}.'_discuss',\%discinfo,$ENV{'user.domain'},$ENV{'user.name'});
+
+    if ($contrib{'version'}) {
+        my $oldest = $contrib{'1:timestamp'};
+        if ($prevread eq '0') {
+            $prevread = $oldest-1;
+        }
+	for (my $id=1;$id<=$contrib{'version'};$id++) {
+	    my $idx=$id;
+            my $posttime = $contrib{$idx.':timestamp'};
+            if ($prevread <= $posttime) {
+                $newpostsflag = 1;
+            }
+	    my $hidden=($contrib{'hidden'}=~/\.$idx\./);
+	    my $deleted=($contrib{'deleted'}=~/\.$idx\./);
+	    my $origindex='0.';
+	    if (($contrib{$idx.':replyto'}) && ($ENV{'environment.threadeddiscussion'})) {
+# this is a follow-up message
+		$original[$idx]=$original[$contrib{$idx.':replyto'}];
+		$depth[$idx]=$depth[$contrib{$idx.':replyto'}]+1;
+		$origindex=$index[$contrib{$idx.':replyto'}];
+		if ($depth[$idx]>$maxdepth) { $maxdepth=$depth[$idx]; }
+	    } else {
+# this is an original message
+		$original[$idx]=0;
+		$depth[$idx]=0;
+	    }
+	    if ($replies[$depth[$idx]]) {
+		$replies[$depth[$idx]]++;
+	    } else {
+		$replies[$depth[$idx]]=1;
+	    }
+	    unless ((($hidden) && (!$seeid)) || ($deleted)) {
+		$visible++;
+		my $message=$contrib{$idx.':message'};
+		$message=~s/\n/\<br \/\>/g;
+		$message=&Apache::lontexconvert::msgtexconverted($message);
+                my $subject=$contrib{$idx.':subject'};
+                if (defined($subject)) {
+                    $subject=~s/\n/\<br \/\>/g;
+                    $subject=&Apache::lontexconvert::msgtexconverted($subject);
+                }
+		if ($contrib{$idx.':attachmenturl'}) {
+		    my ($fname)
+                        =($contrib{$idx.':attachmenturl'}=~m|/([^/]+)$|);
+		    &Apache::lonnet::allowuploaded('/adm/feedback',
+					   $contrib{$idx.':attachmenturl'});
+		    $message.='<p>'.&mt('Attachment').
+			': <a href="'.$contrib{$idx.':attachmenturl'}.'"><tt>'.
+			$fname.'</tt></a></p>';
+		}
+		if ($message) {
+		    if ($hidden) {
+			$message='<font color="#888888">'.$message.'</font>';
+		    }
+		    my $screenname=&Apache::loncommon::screenname(
+					    $contrib{$idx.':sendername'},
+					    $contrib{$idx.':senderdomain'});
+		    my $plainname=&Apache::loncommon::nickname(
+					    $contrib{$idx.':sendername'},
+					    $contrib{$idx.':senderdomain'});
+		    
+		    my $sender=&mt('Anonymous');
+		    if ((!$contrib{$idx.':anonymous'}) || ($seeid)) {
+			$sender=&Apache::loncommon::aboutmewrapper(
+					 $plainname,
+					 $contrib{$idx.':sendername'},
+					 $contrib{$idx.':senderdomain'}).' ('.
+					 $contrib{$idx.':sendername'}.' at '.
+					 $contrib{$idx.':senderdomain'}.')';
+			if ($contrib{$idx.':anonymous'}) {
+			    $sender.=' ['.&mt('anonymous').'] '.
+				$screenname;
+			}
+			if ($seeid) {
+			    if ($hidden) {
+				$sender.=' <a href="/adm/feedback?unhide='.
+				    $ressymb.':::'.$idx;
+                                if ($newpostsflag) {
+                                    $sender .= '&previous='.$prevread;
+                                }
+                                $sender .= '">'.&mt('Make Visible').'</a>';
+			    } else {
+				$sender.=' <a href="/adm/feedback?hide='.
+				    $ressymb.':::'.$idx;
+                                if ($newpostsflag) {
+                                    $sender .= '&previous='.$prevread;
+                                }
+                                $sender .= '">'.&mt('Hide').'</a>';
+			    }                     
+			    $sender.=' <a href="/adm/feedback?deldisc='.
+				$ressymb.':::'.$idx;
+                                if ($newpostsflag) {
+                                    $sender .= '&previous='.$prevread;
+                                }
+                                $sender .= '">'.&mt('Delete').'</a>';
+			}
+		    } else {
+			if ($screenname) {
+			    $sender='<i>'.$screenname.'</i>';
+			}
+		    }
+		    if (&discussion_open($status) &&
+			&Apache::lonnet::allowed('pch',
+						 $ENV{'request.course.id'}.
+						 ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))) {
+			$sender.=' <a href="/adm/feedback?replydisc='.
+			    $ressymb.':::'.$idx;
+                        if ($newpostsflag) {
+                            $sender .= '&previous='.$prevread;
+                        }
+                        $sender .= '" '.$target.'>'.&mt('Reply').'</a>';
+		    }
+		    my $vgrlink;
+		    if ($viewgrades) {
+			$vgrlink=&Apache::loncommon::submlink('Submissions',
+            $contrib{$idx.':sendername'},$contrib{$idx.':senderdomain'},$symb);
+		    }
+#figure out at what position this needs to print
+		    my $thisindex=$idx;
+		    if ($ENV{'environment.threadeddiscussion'}) {
+			$thisindex=$origindex.substr('00'.$replies[$depth[$idx]],-2,2);	
+		    }
+		    $alldiscussion{$thisindex}=$idx;
+		    $index[$idx]=$thisindex;
+                    my $spansize = 2;
+                    if ($showonlyunread && $prevread > $posttime) {
+                        $notshown{$idx} = 1;
+                    } else {
+                        if ($prevread > 0 && $prevread <= $posttime) {
+                            $newitem{$idx} = 1;
+                            $discussionitems[$idx] .= '
+                             <p><table border="0" width="100%">
+                              <tr><td align="left"><font color="#FF0000"><b>NEW</b></font></td>';
+                        } else {
+                            $newitem{$idx} = 0;
+                            $discussionitems[$idx] .= '
+                             <p><table border="0" width="100%">
+                              <tr><td align="left">&nbsp;</td>';
+                        }
+                        $discussionitems[$idx] .= '<td align ="left">&nbsp;&nbsp;'.
+                            '<b>'.$subject.'</b>&nbsp;&nbsp;'.
+                            $sender.'</b> '.$vgrlink.' ('.
+                            localtime($posttime).')</td></tr>'.
+                            '</table><blockquote>'.$message.'</blockquote></p>';
+                    }
+                }
+            }
+	}
+    }
+
+    my $discussion='';
+
+    my $function = &Apache::loncommon::get_users_function();
+    my $color = &Apache::loncommon::designparm($function.'.tabbg',
+                                                    $ENV{'user.domain'});
+    my %lt = &Apache::lonlocal::texthash(
+        'cuse' => 'Current settings for this discussion',
+        'allposts' => 'All posts',
+        'unread' => 'New posts only',
+        'ondisp' => 'Once displayed',
+        'onmark' => 'Once marked read',
+        'disa' => 'Posts to be displayed',
+        'npce' => 'Posts cease to be marked "NEW"',
+        'chgt' => 'Change to ',
+    );
+
+    my $currdisp = $lt{'allposts'};
+    my $currmark = $lt{'onmark'};
+    my $dispchange = $lt{'unread'};
+    my $markchange = $lt{'ondisp'};
+    my $displink = '/adm/feedback?onlyunread='.$ressymb;
+    my $marklink = '/adm/feedback?markondisp='.$ressymb;
+
+    if ($markondisp) {
+        $currmark = $lt{'ondisp'};
+        $markchange = $lt{'onmark'};
+        $marklink = '/adm/feedback?markonread='.$ressymb;
+        if ($newpostsflag) {
+            $marklink .= '&previous='.$prevread;
+        }
+    }
+
+    if ($showonlyunread) {
+        $currdisp = $lt{'unread'};
+        $dispchange = $lt{'allposts'};
+        $displink = '/adm/feedback?allposts='.$ressymb;
+    }
+
+    if ($newpostsflag) {
+        $displink .= '&previous='.$prevread;
+    }
+
+    if ($visible) {
+# Print the discusssion
+	$discussion.='<table bgcolor="#AAAAAA" cellpadding="2" cellspacing="2" border="0">';
+	my $colspan=$maxdepth+1;
+        $discussion .= '<tr bgcolor="#FFFFFF"><td colspan="'.$colspan.'" valign="top">'.
+        '<table border="0" bgcolor="#FFFFFF" width="100%" cellspacing="2" cellpadding="2">'.
+        '<tr><td align="left"><b>'.$lt{'cuse'}.'</b></td><td>&nbsp;&nbsp;&nbsp;&nbsp;</td><td align="right"><b>'.$lt{'chgt'}.'</b></td></tr>'.
+        '<tr><td>'.$lt{'disa'}.':&nbsp;<i>'.$currdisp.'</i></td><td>&nbsp;&nbsp;&nbsp;&nbsp;</td><td align="right"><a href="'.$displink.'">'.$dispchange.'</a></td></tr>'.
+        '<tr><td>'.$lt{'npce'}.':&nbsp;<i>'.$currmark.'</i></td><td>&nbsp;&nbsp;&nbsp;&nbsp;</td><td align="right"><a href="'.$marklink.'">'.$markchange.'</a></td></tr>'.
+        '</table></td></tr>'.
+        '<tr><td bgcolor="#DDDDBB" colspan="'.$colspan.'">'.
+        '<table border="0" width="100%" bgcolor="#DDDDBB"><tr>';
+        if ($visible>2) {
+	    $discussion.='<td align="left">'.
+            '<a href="/adm/feedback?threadedon='.$ressymb;
+            if ($newpostsflag) {
+                $discussion .= '&previous='.$prevread;
+            }
+            $discussion .='">'.&mt('Threaded View').'</a>&nbsp;&nbsp;'.
+            '<a href="/adm/feedback?threadedoff='.$ressymb;
+            if ($newpostsflag) {
+                $discussion .= '&previous='.$prevread;
+            }
+            $discussion .='">'.&mt('Chronological View').'</a>&nbsp;&nbsp;</td>';
+	} 
+        if ($newpostsflag) {
+            if (!$markondisp) {
+                $discussion .='<td align="right"><a href="/adm/feedback?markread='.$ressymb.'">'.&mt('Mark new posts as read').'</a>&nbsp;&nbsp;';
+            } else {
+                $discussion .= '<td>&nbsp;</td>';
+            }
+        } else {
+            $discussion .= '<td>&nbsp;</td>';
+        }
+        $discussion .= '</tr></table></td></tr>';
+
+        my $numhidden = keys %notshown;
+        if ($numhidden > 0) {
+            my $colspan = $maxdepth+1;
+            $discussion.="\n".'<tr><td bgcolor="#CCCCCC" colspan="'.$colspan.'">'.
+                         '<a href="/adm/feedback?allposts='.$ressymb;
+            if ($newpostsflag) {
+                $discussion .= '&previous='.$prevread;
+            }
+            $discussion .= '">'.&mt('Show all posts').'</a> '.&mt('to display').' '.
+                         $numhidden.' '.&mt('previously viewed posts').
+                         '<br/></td></tr>';
+        }
+	foreach (sort { $a <=> $b } keys %alldiscussion) {
+            unless ($notshown{$alldiscussion{$_}} eq '1') {
+	        $discussion.="\n<tr>";
+	        my $thisdepth=$depth[$alldiscussion{$_}];
+	        for (1..$thisdepth) {
+		    $discussion.='<td>&nbsp;&nbsp;&nbsp;</td>';
+	        }
+	        my $colspan=$maxdepth-$thisdepth+1;
+                $discussion.='<td  bgcolor="'.$bgcols[$newitem{$alldiscussion{$_}}].'" colspan="'.$colspan.'">'.
+                             $discussionitems[$alldiscussion{$_}].
+	                     '</td></tr>';
+	    }
+        }
+        $discussion.='</table><br /><br />';
+    }
+    if ($discussiononly) {
+	$discussion.=(<<ENDDISCUSS);
+<form action="/adm/feedback" method="post" name="mailform" enctype="multipart/form-data">
+<input type="submit" name="discuss" value="Post Discussion" />
+<input type="submit" name="anondiscuss" value="Post Anonymous Discussion" />
+<input type="hidden" name="symb" value="$ressymb" />
+<input type="hidden" name="sendit" value="true" />
+<br />
+<font size="1">Note: in anonymous discussion, your name is visible only to
+course faculty</font><br />
+<b>Title:</b>&nbsp;<input type="text" name="subject" value="" size="30" /><br /><br />
+<textarea name="comment" cols="60" rows="12" wrap="hard"></textarea>
+<p>
+Attachment (128 KB max size): <input type="file" name="attachment" />
+</p>
+</form>
+ENDDISCUSS
+      $discussion.=&generate_preview_button();
+    } else {
+	if (&discussion_open($status) &&
+	    &Apache::lonnet::allowed('pch',
+				   $ENV{'request.course.id'}.
+	($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))) {
+			    $discussion.='<table bgcolor="#BBBBBB"><tr><td><a href="/adm/feedback?replydisc='.
+				$symb.':::" '.$target.'>'.
+				'<img src="/adm/lonMisc/chat.gif" border="0" />'.
+				&mt('Post Discussion').'</a></td></tr></table>';
+			}
+    }
+   return $discussion;
+}
+
+sub mail_screen {
+  my ($r,$feedurl,$options) = @_;
+  my $bodytag=&Apache::loncommon::bodytag('Resource Feedback and Discussion',
+                                          '','onLoad="window.focus();"');
+  my $title=&Apache::lonnet::gettitle($feedurl);
+  if (!$title) { $title = $feedurl; }
+  my $quote='';
+  my $subject = '';
+  my $prevtag = '';
+  if ($ENV{'form.replydisc'}) {
+      my ($symb,$idx)=split(/\:\:\:/,$ENV{'form.replydisc'});
+      my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
+					   $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
+					   $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
+      unless (($contrib{'hidden'}=~/\.$idx\./) || ($contrib{'deleted'}=~/\.$idx\./)) {
+	  my $message=$contrib{$idx.':message'};
+	  $message=~s/\n/\<br \/\>/g;
+	  $quote='<blockquote>'.&Apache::lontexconvert::msgtexconverted($message).'</blockquote>';
+          if ($idx > 0) {
+              $subject = 'Re: '.$contrib{$idx.':subject'};
+          }
+      }
+      if ($ENV{'form.previous'}) {
+          $prevtag = '<input type="hidden" name="previous" value="'.$ENV{'form.previous'}.'" />';
+      }
+  }
+  my $latexHelp=&Apache::loncommon::helpLatexCheatsheet();
+  my $htmlheader=&Apache::lonhtmlcommon::htmlareaheaders();
+  my $send=&mt('Send');
+  $r->print(<<ENDDOCUMENT);
 <html>
 <head>
 <title>The LearningOnline Network with CAPA</title>
+<meta http-equiv="pragma" content="no-cache"></meta>
+$htmlheader
+<script type="text/javascript">
+//<!--
+    function gosubmit() {
+        var rec=0;
+        if (typeof(document.mailform.elements.author)!="undefined") {
+          if (document.mailform.elements.author.checked) {
+             rec=1;
+          } 
+        }
+        if (typeof(document.mailform.elements.question)!="undefined") {
+          if (document.mailform.elements.question.checked) {
+             rec=1;
+          } 
+        }
+        if (typeof(document.mailform.elements.course)!="undefined") {
+          if (document.mailform.elements.course.checked) {
+             rec=1;
+          } 
+        }
+        if (typeof(document.mailform.elements.policy)!="undefined") {
+          if (document.mailform.elements.policy.checked) {
+             rec=1;
+          } 
+        }
+        if (typeof(document.mailform.elements.discuss)!="undefined") {
+          if (document.mailform.elements.discuss.checked) {
+             rec=1;
+          } 
+        }
+        if (typeof(document.mailform.elements.anondiscuss)!="undefined") {
+          if (document.mailform.elements.anondiscuss.checked) {
+             rec=1;
+          } 
+        }
+
+        if (rec) {
+	    document.mailform.onsubmit();
+	    document.mailform.submit();
+        } else {
+            alert('Please check a feedback type.');
+	}
+    }
+//-->
+</script>
+</head>
+$bodytag
+<h2><tt>$title</tt></h2>
+<form action="/adm/feedback" method="post" name="mailform"
+enctype="multipart/form-data">
+$prevtag
+<input type="hidden" name="postdata" value="$feedurl" />
+<input type="hidden" name="replydisc" value="$ENV{'form.replydisc'}" />
+Please check at least one of the following feedback types:
+$options<hr />
+$quote
+<p>My question/comment/feedback:</p>
+<p>
+$latexHelp
+Title: <input type="text" name="subject" size="30" value="$subject" /></p>
+<p>
+<textarea name="comment" cols="60" rows="10" wrap="hard">
+</textarea></p>
+<p>
+Attachment (128 KB max size): <input type="file" name="attachment" />
+</p>
+<p>
+<input type="hidden" name="sendit" value="1" />
+<input type="button" value="$send" onClick='gosubmit();' />
+</p>
+</form>
+ENDDOCUMENT
+$r->print(&generate_preview_button().
+&Apache::lonhtmlcommon::htmlareaactive().
+'</body></html>');
+}
+
+sub fail_redirect {
+  my ($r,$feedurl) = @_;
+  if ($feedurl=~/^\/adm\//) { $feedurl.='?register=1' };
+  $r->print (<<ENDFAILREDIR);
+<html>
+<head><title>Feedback not sent</title>
+<meta http-equiv="pragma" content="no-cache" />
+<meta HTTP-EQUIV="Refresh" CONTENT="2; url=$feedurl" />
 </head>
 <body bgcolor="#FFFFFF">
-<h1>Feedback</h1>
-<img src="/adm/lonKaputt/lonconstruct.gif">
+<img align="right" src="/adm/lonIcons/lonlogos.gif" />
+<b>Sorry, no recipients  ...</b>
 </body>
 </html>
-ENDDOCUMENT
-    return OK;
+ENDFAILREDIR
+}
+
+sub redirect_back {
+  my ($r,$feedurl,$typestyle,$sendsomething,$sendposts,$status,$previous) = @_;
+  my $prevtag = '';
+  my $qrystr = '';
+  if ($feedurl=~/^\/adm\//) { $feedurl.='?register=1' };
+  if ($previous > 0) {
+      $qrystr = 'previous='.$previous;
+      if ($feedurl =~ /\?register=1/) {
+          $feedurl .= '&'.$qrystr;
+      } else {
+          $feedurl .= '?'.$qrystr;
+      }
+      $prevtag = '<input type="hidden" name="previous" value="'.$previous.'" />';
+  }
+  $r->print (<<ENDREDIR);
+<html>
+<head>
+<title>Feedback sent</title>
+<meta http-equiv="pragma" content="no-cache" />
+<meta HTTP-EQUIV="Refresh" CONTENT="2; url=$feedurl" />
+</head>
+<body bgcolor="#FFFFFF" onLoad='if (window.name!="loncapaclient") { this.document.reldt.submit(); self.close(); }'>
+<img align="right" src="/adm/lonIcons/lonlogos.gif" />
+$typestyle
+<b>Sent $sendsomething message(s), and $sendposts post(s).</b>
+<font color="red">$status</font>
+<form name="reldt" action="$feedurl" target="loncapaclient">
+$prevtag
+</form>
+</body>
+</html>
+ENDREDIR
+}
+
+sub no_redirect_back {
+  my ($r,$feedurl) = @_;
+  $r->print (<<ENDNOREDIR);
+<html>
+<head><title>Feedback not sent</title>
+<meta http-equiv="pragma" content="no-cache" />
+ENDNOREDIR
+
+  if ($feedurl!~/^\/adm\/feedback/) { 
+    $r->print('<meta HTTP-EQUIV="Refresh" CONTENT="2; url='.$feedurl.'">');
+  }
+  
+  $r->print (<<ENDNOREDIRTWO);
+</head>
+<body bgcolor="#FFFFFF" onLoad='if (window.name!="loncapaclient") { self.close(); }'>
+<img align="right" src="/adm/lonIcons/lonlogos.gif" />
+<b>Sorry, no feedback possible on this resource  ...</b>
+</body>
+</html>
+ENDNOREDIRTWO
+}
+
+sub screen_header {
+    my ($feedurl) = @_;
+    my $msgoptions='';
+    my $discussoptions='';
+    unless ($ENV{'form.replydisc'}) {
+	if (($feedurl=~/^\/res\//) && ($feedurl!~/^\/res\/adm/)) {
+	    $msgoptions= 
+		'<p><input type="checkbox" name="author" /> '.
+		&mt('Feedback to resource author').'</p>';
+	}
+	if (&feedback_available(1)) {
+	    $msgoptions.=
+		'<br /><input type="checkbox" name="question" /> '.
+		&mt('Question about resource content');
+	}
+	if (&feedback_available(0,1)) {
+	    $msgoptions.=
+		'<br /><input type="checkbox" name="course" /> '.
+		&mt('Question/Comment/Feedback about course content');
+	}
+	if (&feedback_available(0,0,1)) {
+	    $msgoptions.=
+		'<br /><input type="checkbox" name="policy" /> '.
+		&mt('Question/Comment/Feedback about course policy');
+	}
+    }
+    if ($ENV{'request.course.id'}) {
+	if (&discussion_open() &&
+	    &Apache::lonnet::allowed('pch',
+				     $ENV{'request.course.id'}.
+				     ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))) {
+	    $discussoptions='<input type="checkbox" name="discuss" onClick="this.form.anondiscuss.checked=false;" '.
+		($ENV{'form.replydisc'}?' checked="1"':'').' /> '.
+		&mt('Contribution to course discussion of resource');
+	    $discussoptions.='<br /><input type="checkbox" name="anondiscuss" onClick="this.form.discuss.checked=false;" /> '.
+		&mt('Anonymous contribution to course discussion of resource').
+		' <i>('.&mt('name only visible to course faculty').')</i>';
+      }
+    }
+    if ($msgoptions) { $msgoptions='<h2><img src="/adm/lonMisc/feedback.gif" />'.&mt('Sending Messages').'</h2>'.$msgoptions; }
+    if ($discussoptions) { 
+	$discussoptions='<h2><img src="/adm/lonMisc/chat.gif" />'.&mt('Discussion Contributions').'</h2>'.$discussoptions; }
+    return $msgoptions.$discussoptions;
+}
+
+sub resource_output {
+  my ($feedurl) = @_;
+  my $usersaw=&Apache::lonnet::ssi_body($feedurl);
+  $usersaw=~s/\<body[^\>]*\>//gi;
+  $usersaw=~s/\<\/body\>//gi;
+  $usersaw=~s/\<html\>//gi;
+  $usersaw=~s/\<\/html\>//gi;
+  $usersaw=~s/\<head\>//gi;
+  $usersaw=~s/\<\/head\>//gi;
+  $usersaw=~s/action\s*\=/would_be_action\=/gi;
+  return $usersaw;
+}
+
+sub clear_out_html {
+  my ($message,$override)=@_;
+  unless (&Apache::lonhtmlcommon::htmlareablocked()) { return $message; }
+  my $cid=$ENV{'request.course.id'};
+  if (($ENV{"course.$cid.allow_limited_html_in_feedback"} =~ m/yes/i) ||
+      ($override)) {
+      # allows <B> <I> <P> <A> <LI> <OL> <UL> <EM> <BR> <TT> <STRONG> 
+      # <BLOCKQUOTE> <DIV .*> <DIV> <IMG> <M> <SPAN> <H1> <H2> <H3> <H4> <SUB>
+      # <SUP>
+      my %html=(B=>1, I=>1, P=>1, A=>1, LI=>1, OL=>1, UL=>1, EM=>1,
+		BR=>1, TT=>1, STRONG=>1, BLOCKQUOTE=>1, DIV=>1, IMG=>1,
+                M=>1, SUB=>1, SUP=>1, SPAN=>1, 
+		H1=>1, H2=>1, H3=>1, H4=>1, H5=>1);
+
+      $message =~ s/\<(\/?\s*(\w+)[^\>\<]*)/
+	  {($html{uc($2)}&&(length($1)<1000))?"\<$1":"\&lt;$1"}/ge;
+      $message =~ s/(\<?\s*(\w+)[^\<\>]*)\>/
+	  {($html{uc($2)}&&(length($1)<1000))?"$1\>":"$1\&gt;"}/ge;
+  } else {
+      $message=~s/\</\&lt\;/g;
+      $message=~s/\>/\&gt\;/g;
+  }
+  return $message;
+}
+
+sub assemble_email {
+  my ($feedurl,$message,$prevattempts,$usersaw,$useranswer)=@_;
+  my $email=<<"ENDEMAIL";
+Refers to <a href="$feedurl">$feedurl</a>
+
+$message
+ENDEMAIL
+    my $citations=<<"ENDCITE";
+<h2>Previous attempts of student (if applicable)</h2>
+$prevattempts
+<br /><hr />
+<h2>Original screen output (if applicable)</h2>
+$usersaw
+<h2>Correct Answer(s) (if applicable)</h2>
+$useranswer
+ENDCITE
+  return ($email,$citations);
+}
+
+sub secapply {
+    my $rec=shift;
+    my $defaultflag=shift;
+    $rec=~s/\s+//g;
+    $rec=~s/\@/\:/g;
+    my ($adr,$sections)=($rec=~/^([^\(]+)\(([^\)]+)\)/);
+    if ($sections) {
+	foreach (split(/\;/,$sections)) {
+            if (($_ eq $ENV{'request.course.sec'}) ||
+                ($defaultflag && ($_ eq '*'))) {
+                return $adr; 
+            }
+        }
+    } else {
+       return $rec;
+    }
+    return '';
+}
+
+sub decide_receiver {
+  my ($feedurl,$author,$question,$course,$policy,$defaultflag) = @_;
+  my $typestyle='';
+  my %to=();
+  if ($ENV{'form.author'}||$author) {
+    $typestyle.='Submitting as Author Feedback<br>';
+    $feedurl=~/^\/res\/(\w+)\/(\w+)\//;
+    $to{$2.':'.$1}=1;
+  }
+  if ($ENV{'form.question'}||$question) {
+    $typestyle.='Submitting as Question<br>';
+    foreach (split(/\,/,
+		   $ENV{'course.'.$ENV{'request.course.id'}.'.question.email'})
+	     ) {
+	my $rec=&secapply($_,$defaultflag);
+        if ($rec) { $to{$rec}=1; }
+    } 
+  }
+  if ($ENV{'form.course'}||$course) {
+    $typestyle.='Submitting as Comment<br />';
+    foreach (split(/\,/,
+		   $ENV{'course.'.$ENV{'request.course.id'}.'.comment.email'})
+	     ) {
+	my $rec=&secapply($_,$defaultflag);
+        if ($rec) { $to{$rec}=1; }
+    } 
+  }
+  if ($ENV{'form.policy'}||$policy) {
+    $typestyle.='Submitting as Policy Feedback<br />';
+    foreach (split(/\,/,
+		   $ENV{'course.'.$ENV{'request.course.id'}.'.policy.email'})
+	     ) {
+	my $rec=&secapply($_,$defaultflag);
+        if ($rec) { $to{$rec}=1; }
+    } 
+  }
+  if ((scalar(%to) eq '0') && (!$defaultflag)) {
+     ($typestyle,%to)=
+	 &decide_receiver($feedurl,$author,$question,$course,$policy,1);
+  }
+  return ($typestyle,%to);
+}
+
+sub feedback_available {
+    my ($question,$course,$policy)=@_;
+    my ($typestyle,%to)=&decide_receiver('',0,$question,$course,$policy);
+    return scalar(%to);
+}
+
+sub send_msg {
+  my ($feedurl,$email,$citations,$attachmenturl,%to)=@_;
+  my $status='';
+  my $sendsomething=0;
+  foreach (keys %to) {
+    if ($_) {
+      my $declutter=&Apache::lonnet::declutter($feedurl);
+      unless (&Apache::lonmsg::user_normal_msg(split(/\:/,$_),
+               'Feedback ['.$declutter.']',$email,$citations,$feedurl,
+                $attachmenturl)=~/ok/) {
+	$status.='<br />'.&mt('Error sending message to').' '.$_.'<br />';
+      } else {
+	$sendsomething++;
+      }
+    }
+  }
+
+    my %record=&Apache::lonnet::restore('_feedback');
+    my ($temp)=keys %record;
+    unless ($temp=~/^error\:/) {
+       my %newrecord=();
+       $newrecord{'resource'}=$feedurl;
+       $newrecord{'subnumber'}=$record{'subnumber'}+1;
+       unless (&Apache::lonnet::cstore(\%newrecord,'_feedback') eq 'ok') {
+	   $status.='<br />'.&mt('Not registered').'<br />';
+       }
+    }
+       
+  return ($status,$sendsomething);
+}
+
+sub adddiscuss {
+    my ($symb,$email,$anon,$attachmenturl,$subject)=@_;
+    my $status='';
+    if (&discussion_open() &&
+	&Apache::lonnet::allowed('pch',$ENV{'request.course.id'}.
+        ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))) {
+
+    my %contrib=('message'      => $email,
+                 'sendername'   => $ENV{'user.name'},
+                 'senderdomain' => $ENV{'user.domain'},
+                 'screenname'   => $ENV{'environment.screenname'},
+                 'plainname'    => $ENV{'environment.firstname'}.' '.
+		                   $ENV{'environment.middlename'}.' '.
+                                   $ENV{'environment.lastname'}.' '.
+                                   $ENV{'enrironment.generation'},
+                 'attachmenturl'=> $attachmenturl,
+                 'subject'      => $subject);
+    if ($ENV{'form.replydisc'}) {
+	$contrib{'replyto'}=(split(/\:\:\:/,$ENV{'form.replydisc'}))[1];
+    }
+    if ($anon) {
+	$contrib{'anonymous'}='true';
+    }
+    if (($symb) && ($email)) {
+       $status='Adding to class discussion'.($anon?' (anonymous)':'').': '.
+        &Apache::lonnet::store(\%contrib,$symb,$ENV{'request.course.id'},
+                     $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
+		     $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
+        my %storenewentry=($symb => time);
+        $status.='<br />'.&mt('Updating discussion time').': '.
+        &Apache::lonnet::put('discussiontimes',\%storenewentry,
+                     $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
+		     $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
+    }
+    my %record=&Apache::lonnet::restore('_discussion');
+    my ($temp)=keys %record;
+    unless ($temp=~/^error\:/) {
+       my %newrecord=();
+       $newrecord{'resource'}=$symb;
+       $newrecord{'subnumber'}=$record{'subnumber'}+1;
+       $status.='<br />'.&mt('Registering').': '.
+               &Apache::lonnet::cstore(\%newrecord,'_discussion');
+    }
+    } else {
+	$status.='Failed.';
+    }
+    return $status.'<br />';   
+}
+
+# ----------------------------------------------------------- Preview function
+
+sub show_preview {
+    my $r=shift;
+    my $message=&clear_out_html($ENV{'form.comment'});
+    $message=~s/\n/\<br \/\>/g;
+    $message=&Apache::lontexconvert::msgtexconverted($message);
+    my $subject=&clear_out_html($ENV{'form.subject'});
+    $subject=~s/\n/\<br \/\>/g;
+    $subject=&Apache::lontexconvert::msgtexconverted($subject);
+    $r->print('<table border="2"><tr><td>'.
+       '<b>Subject:</b> '.$subject.'<br /><br />'.
+       $message.'</td></tr></table>');
+}
+
+sub generate_preview_button {
+    my $pre=&mt("Show Preview");
+    return(<<ENDPREVIEW);
+<form name="preview" action="/adm/feedback?preview=1" method="post" target="preview">
+<input type="hidden" name="subject">
+<input type="hidden" name="comment" />
+<input type="button" value="$pre"
+onClick="document.mailform.onsubmit();this.form.comment.value=document.mailform.comment.value;this.form.subject.value=document.mailform.subject.value;this.form.submit();" />
+</form>
+ENDPREVIEW
+}
+
+sub handler {
+  my $r = shift;
+  if ($r->header_only) {
+     &Apache::loncommon::content_type($r,'text/html');
+     $r->send_http_header;
+     return OK;
+  }
+
+# --------------------------- Get query string for limited number of parameters
+
+   &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
+         ['hide','unhide','deldisc','postdata','preview','replydisc','threadedon','threadedoff','onlyunread','allposts','previous','markread','markonread','markondisp']);
+
+  if (($ENV{'form.markondisp'}) || ($ENV{'form.markonread'})) {
+# ---------------------- Modify setting for identification of 'NEW' posts in this discussion
+
+      &Apache::loncommon::content_type($r,'text/html');
+      $r->send_http_header;
+      my $symb=$ENV{'form.markondisp'}?$ENV{'form.markondisp'}:$ENV{'form.markonread'};
+      my $ressymb = $symb;
+      my ($map,$ind,$url)=&Apache::lonnet::decode_symb($symb);
+      unless ($ressymb =~ m|bulletin___\d+___adm/wrapper|) {
+          $ressymb=~s|(bulletin___\d+___)|$1adm/wrapper|;
+      }
+                                                                                          
+      my %discinfo = ();
+      my $lastkey = $ressymb.'_lastread';
+      my $ondispkey = $ressymb.'_markondisp';
+      if ($ENV{'form.markondisp'}) {
+          $discinfo{$lastkey} = time;
+          $discinfo{$ondispkey} = 1;
+      } elsif ($ENV{'form.markonread'}) {
+          if ( defined($ENV{'previous'}) ) {
+              $discinfo{$lastkey} = $ENV{'previous'};
+          }
+          $discinfo{$ondispkey} = 0;
+      }
+      &Apache::lonnet::put('nohist_'.$ENV{'request.course.id'}.'_discuss',\%discinfo,$ENV{'user.domain'},$ENV{'user.name'});
+      if ($ENV{'form.markondisp'}) {
+          &redirect_back($r,&Apache::lonnet::clutter($url),&mt('Changed display status').'<br />','0','0');
+      } else {
+          &redirect_back($r,&Apache::lonnet::clutter($url),&mt('Changed display status').'<br />','0','0','',$ENV{'form.previous'});
+      }
+      return OK;
+  } elsif (($ENV{'form.allposts'}) || ($ENV{'form.onlyunread'})) {
+# ----------------------------------------------------------------- Modify display setting for this discussion 
+      &Apache::loncommon::content_type($r,'text/html');
+      $r->send_http_header;
+      my $symb=$ENV{'form.allposts'}?$ENV{'form.allposts'}:$ENV{'form.onlyunread'};
+      my $ressymb = $symb;
+      my ($map,$ind,$url)=&Apache::lonnet::decode_symb($symb);
+      unless ($ressymb =~ m|bulletin___\d+___adm/wrapper|) {
+          $ressymb=~s|(bulletin___\d+___)|$1adm/wrapper|;
+      }
+      my %discinfo = ();
+      if ($ENV{'form.allposts'}) {
+          $discinfo{$ressymb.'_showonlyunread'} = 0;
+      } elsif ($ENV{'form.onlyunread'}) {
+          $discinfo{$ressymb.'_showonlyunread'} = 1;
+      }
+      &Apache::lonnet::put('nohist_'.$ENV{'request.course.id'}.'_discuss',\%discinfo,$ENV{'user.domain'},$ENV{'user.name'});
+      &redirect_back($r,&Apache::lonnet::clutter($url),&mt('Changed display status').'<br />','0','0','',$ENV{'form.previous'});
+      return OK;
+  } elsif ($ENV{'form.markread'}) {
+# ----------------------------------------------------------------- Mark new posts as read
+      &Apache::loncommon::content_type($r,'text/html');
+      $r->send_http_header;
+      my $symb=$ENV{'form.markread'};
+      my $ressymb = $symb;
+      my ($map,$ind,$url)=&Apache::lonnet::decode_symb($symb);
+      unless ($ressymb =~ m|bulletin___\d+___adm/wrapper|) {
+          $ressymb=~s|(bulletin___\d+___)|$1adm/wrapper|;
+      }
+      my %discinfo = ();
+      my $lastkey = $ressymb.'_lastread';
+      $discinfo{$lastkey} = time;
+      &Apache::lonnet::put('nohist_'.$ENV{'request.course.id'}.'_discuss',\%discinfo,$ENV{'user.domain'},$ENV{'user.name'});
+      &redirect_back($r,&Apache::lonnet::clutter($url),&mt('Changed reading status').'<br />','0','0');
+      return OK;
+  } elsif (($ENV{'form.hide'}) || ($ENV{'form.unhide'})) {
+# ----------------------------------------------------------------- Hide/unhide
+    &Apache::loncommon::content_type($r,'text/html');
+    $r->send_http_header;
+
+    my $entry=$ENV{'form.hide'}?$ENV{'form.hide'}:$ENV{'form.unhide'};
+
+    my ($symb,$idx)=split(/\:\:\:/,$entry);
+    my ($map,$ind,$url)=&Apache::lonnet::decode_symb($symb);
+
+    my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
+                     $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
+		     $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
+
+        
+    my $currenthidden=$contrib{'hidden'};
+    
+    if ($ENV{'form.hide'}) {
+	$currenthidden.='.'.$idx.'.';
+    } else {
+        $currenthidden=~s/\.$idx\.//g;
+    }
+    my %newhash=('hidden' => $currenthidden);
+
+    &Apache::lonnet::store(\%newhash,$symb,$ENV{'request.course.id'},
+                     $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
+		     $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
+
+    &redirect_back($r,&Apache::lonnet::clutter($url),
+       &mt('Changed discussion status').'<br />','0','0','',$ENV{'form.previous'});
+  } elsif (($ENV{'form.threadedon'}) || ($ENV{'form.threadedoff'})) {
+      &Apache::loncommon::content_type($r,'text/html');
+      $r->send_http_header;
+      if ($ENV{'form.threadedon'}) {
+	  &Apache::lonnet::put('environment',{'threadeddiscussion' => 'on'});
+	  &Apache::lonnet::appenv('environment.threadeddiscussion' => 'on');
+      } else {
+ 	  &Apache::lonnet::del('environment',['threadeddiscussion']);
+	  &Apache::lonnet::delenv('environment\.threadeddiscussion');
+      }
+      my $symb=$ENV{'form.threadedon'}?$ENV{'form.threadedon'}:$ENV{'form.threadedoff'};
+      my ($map,$ind,$url)=&Apache::lonnet::decode_symb($symb);
+      &redirect_back($r,&Apache::lonnet::clutter($url),
+		     &mt('Changed discussion view mode').'<br />','0','0','',$ENV{'form.previous'});
+  } elsif ($ENV{'form.deldisc'}) {
+# --------------------------------------------------------------- Hide for good
+    &Apache::loncommon::content_type($r,'text/html');
+    $r->send_http_header;
+
+    my $entry=$ENV{'form.deldisc'};
+
+    my ($symb,$idx)=split(/\:\:\:/,$entry);
+    my ($map,$ind,$url)=&Apache::lonnet::decode_symb($symb);
+
+    my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
+                     $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
+		     $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
+
+        
+    my $currentdeleted=$contrib{'deleted'};
+    
+    $currentdeleted.='.'.$idx.'.';
+
+    my %newhash=('deleted' => $currentdeleted);
+
+    &Apache::lonnet::store(\%newhash,$symb,$ENV{'request.course.id'},
+                     $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
+		     $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
+
+    &redirect_back($r,&Apache::lonnet::clutter($url),
+       &mt('Changed discussion status').'<br />','0','0','',$ENV{'form.previous'});
+  } elsif ($ENV{'form.preview'}) {
+# -------------------------------------------------------- User wants a preview
+      $r->content_type('text/html');
+      $r->send_http_header;
+      &show_preview($r);
+  } else {
+# ------------------------------------------------------------- Normal feedback
+  my $feedurl=$ENV{'form.postdata'};
+  $feedurl=~s/^http\:\/\///;
+  $feedurl=~s/^$ENV{'SERVER_NAME'}//;
+  $feedurl=~s/^$ENV{'HTTP_HOST'}//;
+  $feedurl=~s/\?.+$//;
+
+  my $symb;
+  if ($ENV{'form.replydisc'}) {
+      $symb=(split(/\:\:\:/,$ENV{'form.replydisc'}))[0];
+      my ($map,$id,$url)=&Apache::lonnet::decode_symb($symb);
+      $feedurl=&Apache::lonnet::clutter($url);
+  } else {
+      $symb=&Apache::lonnet::symbread($feedurl);
+  }
+  unless ($symb) {
+      $symb=$ENV{'form.symb'};
+      if ($symb) {
+	  my ($map,$id,$url)=&Apache::lonnet::decode_symb($symb);
+          $feedurl=&Apache::lonnet::clutter($url);
+      }
+  }
+  my $goahead=1;
+  if ($feedurl=~/\.(problem|exam|quiz|assess|survey|form)$/) {
+      unless ($symb) { $goahead=0; }
+  }
+  # backward compatibility (bulltin boards used to be 'wrapped')
+  if ($feedurl=~m|^/adm/wrapper/adm/.*/bulletinboard$|) {
+      $feedurl=~s|^/adm/wrapper||;
+  }
+  if ($goahead) {
+# Go ahead with feedback, no ambiguous reference
+    &Apache::loncommon::content_type($r,'text/html');
+    $r->send_http_header;
+  
+    if (
+      (
+       ($feedurl=~m:^/res:) && ($feedurl!~m:^/res/adm:)
+      ) 
+      || 
+      ($ENV{'request.course.id'} && ($feedurl!~m:^/adm:))
+      ||
+      ($ENV{'request.course.id'} && ($symb=~/^bulletin\_\_\_/))
+     ) {
+# --------------------------------------------------- Print login screen header
+    unless ($ENV{'form.sendit'}) {
+      my $options=&screen_header($feedurl);
+      if ($options) {
+	&mail_screen($r,$feedurl,$options);
+      } else {
+	&fail_redirect($r,$feedurl);
+      }
+    } else {
+      
+# Get previous user input
+      my $prevattempts=&Apache::loncommon::get_previous_attempt(
+            $symb,$ENV{'user.name'},$ENV{'user.domain'},
+            $ENV{'request.course.id'});
+
+# Get output from resource
+      my $usersaw=&resource_output($feedurl);
+
+# Get resource answer (need to allow student to view grades for this to work)
+      &Apache::lonnet::appenv(('allowed.vgr'=>'F'));
+      my $useranswer=&Apache::loncommon::get_student_answers(
+                       $symb,$ENV{'user.name'},$ENV{'user.domain'},
+		       $ENV{'request.course.id'});
+      &Apache::lonnet::delenv('allowed.vgr');
+# Get attachments, if any, and not too large
+      my $attachmenturl='';
+      if ($ENV{'form.attachment.filename'}) {
+	  unless (length($ENV{'form.attachment'})>131072) {
+	      $attachmenturl=&Apache::lonnet::userfileupload('attachment',undef,'feedback');
+	  }
+      }
+# Filter HTML out of message (could be nasty)
+      my $message=&clear_out_html($ENV{'form.comment'});
+
+# Assemble email
+      my ($email,$citations)=&assemble_email($feedurl,$message,$prevattempts,
+          $usersaw,$useranswer);
+ 
+# Who gets this?
+      my ($typestyle,%to) = &decide_receiver($feedurl);
+
+# Actually send mail
+      my ($status,$numsent)=&send_msg($feedurl,$email,$citations,
+          $attachmenturl,%to);
+
+# Discussion? Store that.
+
+      my $numpost=0;
+      if ($ENV{'form.discuss'}) {
+          my $subject = &clear_out_html($ENV{'form.subject'});
+	  $typestyle.=&adddiscuss($symb,$message,0,$attachmenturl,$subject);
+	  $numpost++;
+      }
+
+      if ($ENV{'form.anondiscuss'}) {
+          my $subject = &clear_out_html($ENV{'form.subject'});
+	  $typestyle.=&adddiscuss($symb,$message,1,$attachmenturl,$subject);
+	  $numpost++;
+      }
+
+
+# Receipt screen and redirect back to where came from
+      &redirect_back($r,$feedurl,$typestyle,$numsent,$numpost,$status,$ENV{'form.previous'});
+
+    }
+   } else {
+# Unable to give feedback
+    &no_redirect_back($r,$feedurl);
+   }
+  } else {
+# Ambiguous Problem Resource
+      if ( &Apache::lonnet::mod_perl_version() == 2 ) {
+	  &Apache::lonnet::cleanenv();
+      }
+      $r->internal_redirect('/adm/ambiguous');
+  }
+}
+  return OK;
 } 
 
 1;