--- loncom/interface/lonfeedback.pm 2001/02/05 17:38:17 1.2 +++ loncom/interface/lonfeedback.pm 2004/04/28 21:13:13 1.78 @@ -1,153 +1,1006 @@ # The LearningOnline Network # Feedback # -# (Internal Server Error Handler +# $Id: lonfeedback.pm,v 1.78 2004/04/28 21:13:13 raeburn 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). # -# 3/1,2/3,2/5 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; -sub handler { - my $r = shift; - $r->content_type('text/html'); - $r->send_http_header; - return OK if $r->header_only; - - my $feedurl=$ENV{'form.postdata'}; - $feedurl=~s/^http\:\/\///; - $feedurl=~s/^$ENV{'SERVER_NAME'}//; - $feedurl=~s/^$ENV{'HTTP_HOST'}//; +sub list_discussion { + my ($mode,$status,$symb)=@_; +# &Apache::lonnet::logthis("status is $status"); + if (!($status eq 'CAN_ANSWER' || $status eq 'CANNOT_ANSWER' + || $status eq 'OPEN')) { + return ''; + } + 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 ''; } - if (($feedurl=~/^\/res/) || ($ENV{'request.course.id'})) { -# --------------------------------------------------- Print login screen header - unless ($ENV{'form.sendit'}) { - my $options=''; - if ($feedurl=~/^\/res/) { - $options= - '

Feedback to resource author'; - } - if ($ENV{'course.'.$ENV{'request.course.id'}.'.question.email'}) { - $options.= - '
Question about resource content'; - } - if ($ENV{'course.'.$ENV{'request.course.id'}.'.comment.email'}) { - $options.= - '
'. - 'Question/Comment/Feedback about course content'; - } - if ($ENV{'course.'.$ENV{'request.course.id'}.'.policy.email'}) { - $options.= - '
'. - 'Question/Comment/Feedback about course policy'; + my %dischash = &Apache::lonnet::restore($symb,$ENV{'request.course.id'}.'_discuss',$ENV{'user.domain'},$ENV{'user.name'}); + my %readids = (); + my $showonlyunread; + foreach my $key (keys %dischash) { + if ($key eq 'showonlyunread') { + $showonlyunread = $dischash{$key}; + } else { + if ($dischash{$key} eq 'read') { + $readids{$key} = 1; + } } - $r->print(<$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/\
/g; + $message=&Apache::lontexconvert::msgtexconverted($message); + my $subject=$contrib{$idx.':subject'}; + if (defined($subject)) { + $subject=~s/\n/\
/g; + $subject=&Apache::lontexconvert::msgtexconverted($subject); + } + if ($contrib{$idx.':attachmenturl'}) { + my ($fname,$ft) + =($contrib{$idx.':attachmenturl'}=~/\/(\w+)\.(\w+)$/); + $message.='

'.&mt('Attachment').': '.$fname.'.'.$ft.'

'; + } + if ($message) { + if ($hidden) { + $message=''.$message.''; + } + 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.=' '.&mt('Make Visible').''; + } else { + $sender.=' '.&mt('Hide').''; + } + $sender.=' '.&mt('Delete').''; + } + } else { + if ($screenname) { + $sender=''.$screenname.''; + } + } + if (&Apache::lonnet::allowed('pch', + $ENV{'request.course.id'}. + ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))) { + $sender.=' '.&mt('Reply').''; + } + my $vgrlink; + my $ctlink; + if ($readids{$idx} == 1) { + $ctlink = ''.&mt('Mark unread').'? '. + ''; + } else { + $ctlink = ''.&mt('Mark read').'? '. + ''; + } + if ($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]='

'. + ''; + if ($showonlyunread && $readids{$idx}) { + $discussionitems[$idx] .= '
'.$subject.'  '. + $sender.' '.$vgrlink.' ('. + localtime($contrib{$idx.':timestamp'}). + ')  '.$ctlink.'
Check "Show all posts?" or "Mark unread?", then "Save read settings" to display message
'; + } else { + $discussionitems[$idx] .= '

'.$message.'

'; + } + } + } + } + } + my $discussion=''; + if ($visible) { +# Print a the discusssion + $discussion .= '
'; + $discussion.=''; + if ($visible>2) { + my $colspan=$maxdepth+1; +my $showoption = ''; + } else { + $showoption .= 'Show only unread posts?'; + } + $discussion.=$showoption; + $discussion.=''; + } + + foreach (sort { $a <=> $b } keys %alldiscussion) { + $discussion.="\n"; + my $thisdepth=$depth[$alldiscussion{$_}]; + for (1..$thisdepth) { + $discussion.=''; + } + my $colspan=$maxdepth-$thisdepth+1; + $discussion.=''; + } + my $colspan=$maxdepth+1; + $discussion.=''; + $discussion .= '
'; + my $showflag = 'all'; + if ($showonlyunread) { + $showoption .= 'Show all posts?
'. + ''. + '
'. + ''.&mt('Threaded View').'  '. + ''.&mt('Chronological View').'  '.&mt('Mark all read').'  '. + ''.&mt('Mark all unread').'  '. + '
   '. + $discussionitems[$alldiscussion{$_}]. + '

'. ''. + '


'; + } + if ($discussiononly) { + $discussion.=(< + + + + +
+Note: in anonymous discussion, your name is visible only to +course faculty
+Title: 

+ +

+Attachment (128 KB max size): +

+ +ENDDISCUSS + $discussion.=&generate_preview_button(); + } else { + if (&Apache::lonnet::allowed('pch', + $ENV{'request.course.id'}. + ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))) { + $discussion.='
'. + ''. + &mt('Post Discussion').'
'; + } + } + 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 $subject = ''; + if ($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/\
/g; + $quote='
'.&Apache::lontexconvert::msgtexconverted($message).'
'; + $subject = 'Re: '.$contrib{$idx.':subject'}; + } + } + my $latexHelp = Apache::loncommon::helpLatexCheatsheet(); + my $send=&mt('Send'); + $r->print(< The LearningOnline Network with CAPA + + - - -

Feedback

-

$feedurl

-
- -Please check at least one of the following: -$options
-My question/comment/feedback:

-

- +$bodytag +

$title

+ + + +Please check at least one of the following feedback types: +$options
+$quote +

My question/comment/feedback:

+

+$latexHelp +Title:

+

+

+

+Attachment (128 KB max size): +

+

+ + +

- - ENDDOCUMENT -} else { - my $symb=&Apache::lonnet::symbread($feedurl); - my $prevattempts=''; - if ($symb) { - my $answer=&Apache::lonnet::reply( - "restore:".$ENV{'user.domain'}.':'.$ENV{'user.name'}.':'. - $ENV{'request.course.id'}.':'. - &Apache::lonnet::escape($symb), - $ENV{'user.home'}); - my %returnhash=(); - map { - my ($name,$value)=split(/\=/,$_); - $returnhash{&Apache::lonnet::unescape($name)}= - &Apache::lonnet::unescape($value); - } split(/\&/,$answer); - my %lasthash=(); - my $version; - for ($version=1;$version<=$returnhash{'version'};$version++) { - map { - $lasthash{$_}=$returnhash{$version.':'.$_}; - } split(/\:/,$returnhash{$version.':keys'}); - } - $prevattempts=''; - map { - $prevattempts.=''; - } keys %lasthash; - for ($version=1;$version<=$returnhash{'version'};$version++) { - $prevattempts.=''; - map { - $prevattempts.=''; - } keys %lasthash; - } - $prevattempts.=''; - map { - $prevattempts.=''; - } keys %lasthash; - $prevattempts.='
History'.$_.'
Attempt '.$version.''.$returnhash{$version.':'.$_}.'
Current'.$lasthash{$_}.'
'; - } - my $usersaw=&Apache::lonnet::ssi($feedurl); - $usersaw=~s/\]*\>//gi; - $usersaw=~s/\<\/body\>//gi; - $usersaw=~s/\//gi; - $usersaw=~s/\<\/html\>//gi; - $usersaw=~s/\//gi; - $usersaw=~s/\<\/head\>//gi; - $usersaw=~s/action\s*\=/would_be_action\=/gi; -# - - print (<Feedback sent - +$r->print(&generate_preview_button().''); +} + +sub fail_redirect { + my ($r,$feedurl) = @_; + if ($feedurl=~/^\/adm\//) { $feedurl.='?register=1' }; + $r->print (< +Feedback not sent + + + -Feedback sent ... -$prevattempts -
-$usersaw + +Sorry, no recipients ... + + +ENDFAILREDIR +} + +sub redirect_back { + my ($r,$feedurl,$typestyle,$sendsomething,$sendposts,$status) = @_; + if ($feedurl=~/^\/adm\//) { $feedurl.='?register=1' }; + $r->print (< + +Feedback sent + + + + + +$typestyle +Sent $sendsomething message(s), and $sendposts post(s). +$status +
+
ENDREDIR } -} else { - print (<print (< Feedback not sent - + +ENDNOREDIR + + if ($feedurl!~/^\/adm\/feedback/) { + $r->print(''); + } + + $r->print (< - - -Sorry, no feedback possible on this resource ... + + +Sorry, no feedback possible on this resource ... -ENDNOREDIR +ENDNOREDIRTWO } - return OK; -} -1; -__END__ +sub screen_header { + my ($feedurl) = @_; + my $msgoptions=''; + my $discussoptions=''; + unless ($ENV{'form.replydisc'}) { + if (($feedurl=~/^\/res\//) && ($feedurl!~/^\/res\/adm/)) { + $msgoptions= + '

'. + &mt('Feedback to resource author').'

'; + } + if (&feedback_available(1)) { + $msgoptions.= + '
'. + &mt('Question about resource content'); + } + if (&feedback_available(0,1)) { + $msgoptions.= + '
'. + &mt('Question/Comment/Feedback about course content'); + } + if (&feedback_available(0,0,1)) { + $msgoptions.= + '
'. + &mt('Question/Comment/Feedback about course policy'); + } + } + if ($ENV{'request.course.id'}) { + if (&Apache::lonnet::allowed('pch', + $ENV{'request.course.id'}. + ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))) { + $discussoptions=' '. + &mt('Contribution to course discussion of resource'); + $discussoptions.='
'. + &mt('Anonymous contribution to course discussion of resource'). + ' ('.&mt('name only visible to course faculty').')'; + } + } + if ($msgoptions) { $msgoptions='

'.&mt('Sending Messages').'

'.$msgoptions; } + if ($discussoptions) { + $discussoptions='

'.&mt('Discussion Contributions').'

'.$discussoptions; } + return $msgoptions.$discussoptions; +} +sub resource_output { + my ($feedurl) = @_; + my $usersaw=&Apache::lonnet::ssi_body($feedurl); + $usersaw=~s/\]*\>//gi; + $usersaw=~s/\<\/body\>//gi; + $usersaw=~s/\//gi; + $usersaw=~s/\<\/html\>//gi; + $usersaw=~s/\//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


      • + #
        + 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/(\]*)\>/ + {($html{uc($2)}&&(length($1)<1000))?"$1\>":"$1\>"}/ge; + } else { + $message=~s/\/\>\;/g; + } + return $message; +} +sub assemble_email { + my ($feedurl,$message,$prevattempts,$usersaw,$useranswer)=@_; + my $email=<<"ENDEMAIL"; +Refers to $feedurl + +$message +ENDEMAIL + my $citations=<<"ENDCITE"; +

        Previous attempts of student (if applicable)

        +$prevattempts +
        +

        Original screen output (if applicable)

        +$usersaw +

        Correct Answer(s) (if applicable)

        +$useranswer +ENDCITE + return ($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
        '; + $feedurl=~/^\/res\/(\w+)\/(\w+)\//; + $to{$2.':'.$1}=1; + } + if ($ENV{'form.question'}||$question) { + $typestyle.='Submitting as Question
        '; + 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
        '; + 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
        '; + 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/) { + $status.='
        '.&mt('Error sending message to').' '.$_.'
        '; + } 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') { + $status.='
        '.&mt('Not registered').'
        '; + } + } + + return ($status,$sendsomething); +} + +sub adddiscuss { + my ($symb,$email,$anon,$attachmenturl,$subject)=@_; + 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, + '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.='
        '.&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.='
        '.&mt('Registering').': '. + &Apache::lonnet::cstore(\%newrecord,'_discussion'); + } + } else { + $status.='Failed.'; + } + return $status.'
        '; +} + +# ----------------------------------------------------------- Preview function + +sub show_preview { + my $r=shift; + my $message=&clear_out_html($ENV{'form.comment'}); + $message=~s/\n/\
        /g; + $message=&Apache::lontexconvert::msgtexconverted($message); + my $subject=&clear_out_html($ENV{'form.subject'}); + $subject=~s/\n/\
        /g; + $subject=&Apache::lontexconvert::msgtexconverted($subject); + $r->print('
        '. + 'Subject: '.$subject.'

        '. + $message.'
        '); +} + +sub generate_preview_button { + my $pre=&mt("Show Preview"); + return(< + + + + +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']); + ['hide','unhide','deldisc','postdata','preview','replydisc','threadedon','threadedoff','markread','markunread','storereads','onlyunread','allposts','chgreads']); + + if (($ENV{'form.markread'}) || ($ENV{'form.markunread'})) { +# ----------------------------------------------------------------- Modify read/unread for all + &Apache::loncommon::content_type($r,'text/html'); + $r->send_http_header; + my $symb=$ENV{'form.markread'}?$ENV{'form.markread'}:$ENV{'form.markunread'}; + my $ressymb = $symb; + my ($map,$ind,$url)=&Apache::lonnet::decode_symb($symb); + $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 %readinghash = (); + + if ($contrib{'version'}) { + for (my $id=1;$id<=$contrib{'version'};$id++) { + my $msgid = $id.':message'; + if (defined($contrib{$msgid})) { + if ($ENV{'form.markread'}) { + $readinghash{$id} = 'read'; + } else { + $readinghash{$id} = 'unread'; + } + } + } + if ($ENV{'form.allposts'}) { + $readinghash{'showonlyunread'} = 0; + } elsif ($ENV{'form.onlyunread'}) { + $readinghash{'showonlyunread'} = 1; + } + &Apache::lonnet::cstore(\%readinghash,$symb,$ENV{'request.course.id'}.'_discuss',$ENV{'user.domain'},$ENV{'user.name'}); + } + + &redirect_back($r,&Apache::lonnet::clutter($url),&mt('Changed reading status'),'0','0'); + return OK; + } else { + my $symb = $ENV{'form.discsymb'}; + my %readinghash = (); + my $chgcount = 0; + foreach my $key (keys %ENV) { + if ($key =~ m/^form\.postunread_(\d+)/) { + $readinghash{$1} = 'unread'; + $chgcount ++; + } elsif ($key =~ m/^form\.postread_(\d+)/) { + $readinghash{$1} = 'read'; + $chgcount ++; + } + } + if ($ENV{'form.allposts'}) { + $readinghash{'showonlyunread'} = 0; + $chgcount ++; + } elsif ($ENV{'form.onlyunread'}) { + $readinghash{'showonlyunread'} = 1; + $chgcount ++; + } + + if ($chgcount > 0) { + &Apache::lonnet::cstore(\%readinghash,$symb,$ENV{'request.course.id'}.'_discuss',$ENV{'user.domain'},$ENV{'user.name'}); + } + } + + if ($ENV{'form.chgreads'}) { + &Apache::loncommon::content_type($r,'text/html'); + $r->send_http_header; + my ($map,$ind,$url)=&Apache::lonnet::decode_symb($ENV{'form.chgreads'}); + &redirect_back($r,&Apache::lonnet::clutter($url), + &mt('Changed read status').'
        ','0','0'); + } elsif (($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 read status').'
        ','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').'
        ','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').'
        ','0','0'); + } 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'); + } + } +# 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,$status); + + } + } else { +# Unable to give feedback + &no_redirect_back($r,$feedurl); + } + } else { +# Ambiguous Problem Resource + if ( &Apache::lonnet::mod_perl_version() == 2 ) { + &Apache::lonnet::cleanenv(); + } + $r->internal_redirect('/adm/ambiguous'); + } +} + return OK; +} + +1; +__END__