--- loncom/interface/lonfeedback.pm 2001/01/03 16:20:59 1.1
+++ loncom/interface/lonfeedback.pm 2003/11/27 09:43:42 1.73
@@ -1,6 +1,30 @@
# The LearningOnline Network
# Feedback
#
+# $Id: lonfeedback.pm,v 1.73 2003/11/27 09:43:42 albertel Exp $
+#
+# Copyright Michigan State University Board of Trustees
+#
+# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
+#
+# LON-CAPA is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# LON-CAPA is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with LON-CAPA; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+#
+# /home/httpd/html/adm/gpl.txt
+#
+# http://www.lon-capa.org/
+#
# (Internal Server Error Handler
#
# (Login Screen
@@ -9,32 +33,837 @@
#
# 3/1/1 Gerd Kortemeyer)
#
-# 3/1 Gerd Kortemeyer
+# 3/1,2/3,2/5,2/6,2/8 Gerd Kortemeyer
+# 2/9 Guy Albertelli
+# 2/10 Gerd Kortemeyer
+# 2/13 Guy Albertelli
+# 7/25 Gerd Kortemeyer
+# 7/26 Guy Albertelli
+# 7/26,8/10,10/1,11/5,11/6,12/27,12/29 Gerd Kortemeyer
+# YEAR=2002
+# 1/1,1/16 Gerd Kortemeyer
#
+
package Apache::lonfeedback;
use strict;
use Apache::Constants qw(:common);
+use Apache::lonmsg();
+use Apache::loncommon();
+use Apache::lontexconvert();
+use Apache::lonlocal;
-sub handler {
- my $r = shift;
- $r->content_type('text/html');
- $r->send_http_header;
- return OK if $r->header_only;
+sub list_discussion {
+ my ($mode,$status,$symb)=@_;
+ 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 ''; }
+ my $seeid=&Apache::lonnet::allowed('rin',$crs);
+ my $viewgrades=&Apache::lonnet::allowed('vgr',$crs);
+ my @discussionitems=();
+ # backward compatability (bulltein boards used to be 'wrapped')
+ my $ressymb=$symb;
+ if ($mode eq 'board') {
+ $ressymb=~s|(bulletin___\d+___)|$1adm/wrapper|;
+ }
+ my %contrib=&Apache::lonnet::restore($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 $maxdepth=0;
-# --------------------------------------------------- Print login screen header
- $r->print(<<ENDDOCUMENT);
+ my $target='';
+ unless ($ENV{'browser.interface'} eq 'textual' ||
+ $ENV{'environment.remote'} eq 'off' ) {
+ $target='target="LONcom"';
+ }
+ if ($contrib{'version'}) {
+ for (my $id=1;$id<=$contrib{'version'};$id++) {
+ my $idx=$id;
+ 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);
+ if ($contrib{$idx.':attachmenturl'}) {
+ my ($fname,$ft)
+ =($contrib{$idx.':attachmenturl'}=~/\/(\w+)\.(\w+)$/);
+ $message.='<p>'.&mt('Attachment').': <a href="'.
+ &Apache::lonnet::tokenwrapper(
+ $contrib{$idx.':attachmenturl'}).
+ '"><tt>'.$fname.'.'.$ft.'</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='.
+ $symb.':::'.$idx.'">'.&mt('Make Visible').'</a>';
+ } else {
+ $sender.=' <a href="/adm/feedback?hide='.
+ $symb.':::'.$idx.'">'.&mt('Hide').'</a>';
+ }
+ $sender.=' <a href="/adm/feedback?deldisc='.
+ $symb.':::'.$idx.'">'.&mt('Delete').'</a>';
+ }
+ if (&Apache::lonnet::allowed('pch',
+ $ENV{'request.course.id'}.
+ ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))) {
+ $sender.=' <a href="/adm/feedback?replydisc='.
+ $symb.':::'.$idx.'" '.$target.'>'.&mt('Reply').'</a>';
+ }
+ } else {
+ if ($screenname) {
+ $sender='<i>'.$screenname.'</i>';
+ }
+ }
+ 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;
+ $discussionitems[$idx]='<p><b>'.$sender.'</b> '.$vgrlink.' ('.
+ localtime($contrib{$idx.':timestamp'}).
+ '):<blockquote>'.$message.
+ '</blockquote></p>';
+ }
+ }
+ }
+ }
+ my $discussion='';
+ if ($visible) {
+# Print a the discusssion
+ $discussion.='<table bgcolor="#AAAAAA" cellpadding="2" cellspacing="2" border="0">';
+ if ($visible>2) {
+ my $colspan=$maxdepth+1;
+ $discussion.='<tr><td bgcolor="DDDDBB" colspan="'.$colspan.'">'.
+ '<a href="/adm/feedback?threadedon='.$symb.'">'.&mt('Threaded View').'</a> '.
+ '<a href="/adm/feedback?threadedoff='.$symb.'">'.&mt('Chronological View').'</a>'.
+ '</td></tr>';
+ }
+
+ foreach (sort { $a <=> $b } keys %alldiscussion) {
+ $discussion.="\n<tr>";
+ my $thisdepth=$depth[$alldiscussion{$_}];
+ for (1..$thisdepth) {
+ $discussion.='<td> </td>';
+ }
+ my $colspan=$maxdepth-$thisdepth+1;
+ $discussion.="<td bgcolor='#CCCCCC' colspan='".$colspan."'>".$discussionitems[$alldiscussion{$_}].
+ "</td></tr>";
+ }
+ $discussion.='</table>';
+ }
+ if ($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 />
+<textarea name="comment" cols="60" rows="10" wrap="hard"></textarea>
+<p>
+Attachment (128 KB max size): <input type="file" name="attachment" />
+</p>
+</form>
+ENDDISCUSS
+ $discussion.=&generate_preview_button();
+ }
+ 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 $quote='';
+ if ($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>';
+ }
+ }
+ my $latexHelp = Apache::loncommon::helpLatexCheatsheet();
+ $r->print(<<ENDDOCUMENT);
<html>
<head>
<title>The LearningOnline Network with CAPA</title>
+<meta http-equiv="pragma" content="no-cache"></meta>
+<script type="text/javascript">
+//<!--
+ function gosubmit() {
+ var rec=0;
+ if (typeof(document.mailform.elements.author)!="undefined") {
+ if (document.mailform.elements.author.checked) {
+ rec=1;
+ }
+ }
+ if (typeof(document.mailform.elements.question)!="undefined") {
+ if (document.mailform.elements.question.checked) {
+ rec=1;
+ }
+ }
+ if (typeof(document.mailform.elements.course)!="undefined") {
+ if (document.mailform.elements.course.checked) {
+ rec=1;
+ }
+ }
+ if (typeof(document.mailform.elements.policy)!="undefined") {
+ if (document.mailform.elements.policy.checked) {
+ rec=1;
+ }
+ }
+ if (typeof(document.mailform.elements.discuss)!="undefined") {
+ if (document.mailform.elements.discuss.checked) {
+ rec=1;
+ }
+ }
+ if (typeof(document.mailform.elements.anondiscuss)!="undefined") {
+ if (document.mailform.elements.anondiscuss.checked) {
+ rec=1;
+ }
+ }
+
+ if (rec) {
+ document.mailform.submit();
+ } else {
+ alert('Please check a feedback type.');
+ }
+ }
+//-->
+</script>
+</head>
+$bodytag
+<h2><tt>$title</tt></h2>
+<form action="/adm/feedback" method="post" name="mailform"
+enctype="multipart/form-data">
+<input type="hidden" name="postdata" value="$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
+<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 Feedback" onClick='gosubmit();' />
+</p>
+</form>
+ENDDOCUMENT
+$r->print(&generate_preview_button().'</body></html>');
+}
+
+sub fail_redirect {
+ my ($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) = @_;
+ if ($feedurl=~/^\/adm\//) { $feedurl.='?register=1' };
+ $r->print (<<ENDREDIR);
+<html>
+<head>
+<title>Feedback sent</title>
+<meta http-equiv="pragma" content="no-cache" />
+<meta HTTP-EQUIV="Refresh" CONTENT="2; url=$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="$feedurl" target="loncapaclient">
+</form>
+</body>
+</html>
+ENDREDIR
+}
+
+sub no_redirect_back {
+ my ($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 (&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;" /> '.
+ &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) { $msgoptions='<h2>'.&mt('Sending Messages').'</h2>'.$msgoptions; }
+ if ($discussoptions) {
+ $discussoptions='<h2>'.&mt('Discussion Contributions').'</h2>'.$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)=@_;
+ 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>
+ 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);
+
+ $message =~ s/\<(\/?\s*(\w+)[^\>\<]*)/
+ {($html{uc($2)}&&(length($1)<1000))?"\<$1":"\<$1"}/ge;
+ $message =~ s/(\<?\s*(\w+)[^\<\>]*)\>/
+ {($html{uc($2)}&&(length($1)<1000))?"$1\>":"$1\>"}/ge;
+ } else {
+ $message=~s/\</\<\;/g;
+ $message=~s/\>/\>\;/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)=@_;
+ my $status='';
+ if (&Apache::lonnet::allowed('pch',$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'=> $attachmenturl);
+ if ($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);
+ $r->print('<table border="2"><tr><td>'.
+ $message.'</td></tr></table>');
+}
+
+sub generate_preview_button {
+ my $pre=&mt("Show Preview");
+ return(<<ENDPREVIEW);
+<form name="preview" action="/adm/feedback?preview=1" method="post" target="preview">
+<input type="hidden" name="comment" />
+<input type="button" value="$pre"
+onClick="this.form.comment.value=document.mailform.comment.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']);
+
+ if (($ENV{'form.hide'}) || ($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');
+ } 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');
+ } 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');
+ } elsif ($ENV{'form.preview'}) {
+# -------------------------------------------------------- User wants a preview
+ &show_preview($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) { $goahead=0; }
+ }
+ # backward compatability (bulltein boards used to be 'wrapped')
+ if ($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');
+ }
+ }
+# 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'}) {
+ $typestyle.=&adddiscuss($symb,$message,0,$attachmenturl);
+ $numpost++;
+ }
+
+ if ($ENV{'form.anondiscuss'}) {
+ $typestyle.=&adddiscuss($symb,$message,1,$attachmenturl);
+ $numpost++;
+ }
+
+
+# Receipt screen and redirect back to where came from
+ &redirect_back($r,$feedurl,$typestyle,$numsent,$numpost,$status);
+
+ }
+ } else {
+# Unable to give feedback
+ &no_redirect_back($r,$feedurl);
+ }
+ } else {
+# Ambiguous Problem Resource
+ if ( &Apache::lonnet::mod_perl_version() == 2 ) {
+ &Apache::lonnet::cleanenv();
+ }
+ $r->internal_redirect('/adm/ambiguous');
+ }
+}
+ return OK;
}
1;