--- loncom/interface/lonmsg.pm 2000/10/20 14:40:26 1.3
+++ loncom/interface/lonmsg.pm 2006/04/08 06:53:37 1.180
@@ -1,60 +1,145 @@
# The LearningOnline Network with CAPA
-#
# Routines for messaging
#
-# (Routines to control the menu
+# $Id: lonmsg.pm,v 1.180 2006/04/08 06:53:37 albertel Exp $
+#
+# Copyright Michigan State University Board of Trustees
+#
+# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
#
-# (TeX Conversion Module
+# 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.
#
-# 05/29/00,05/30 Gerd Kortemeyer)
+# 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.
#
-# 10/05 Gerd Kortemeyer)
+# 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/
#
-# 10/19,10/20 Gerd Kortemeyer
package Apache::lonmsg;
use strict;
-use Apache::lonnet();
-use vars qw($msgcount);
-use HTML::TokeParser;
+use Apache::lonnet;
+use HTML::TokeParser();
+use Apache::lonlocal;
+use Mail::Send;
+
+{
+ my $uniq;
+ sub get_uniq {
+ $uniq++;
+ return $uniq;
+ }
+}
# ===================================================================== Package
sub packagemsg {
- my ($subject,$message)=@_;
- $message=~s/\</\<\;/g;
- $message=~s/\>/\>\;/g;
- $subject=~s/\</\<\;/g;
- $subject=~s/\>/\>\;/g;
+ my ($subject,$message,$citation,$baseurl,$attachmenturl,
+ $recuser,$recdomain,$msgid,$type,$crsmsgid)=@_;
+ $message =&HTML::Entities::encode($message,'<>&"');
+ $citation=&HTML::Entities::encode($citation,'<>&"');
+ $subject =&HTML::Entities::encode($subject,'<>&"');
+ #remove machine specification
+ $baseurl =~ s|^http://[^/]+/|/|;
+ $baseurl =&HTML::Entities::encode($baseurl,'<>&"');
+ #remove machine specification
+ $attachmenturl =~ s|^http://[^/]+/|/|;
+ $attachmenturl =&HTML::Entities::encode($attachmenturl,'<>&"');
+ my $course_context;
+ if (defined($env{'form.replyid'})) {
+ my ($sendtime,$shortsubj,$fromname,$fromdomain,$count,$origcid)=
+ split(/\:/,&Apache::lonnet::unescape($env{'form.replyid'}));
+ $course_context = $origcid;
+ }
+ foreach my $key (keys(%env)) {
+ if ($key=~/^form\.(rep)?rec\_(.*)$/) {
+ my ($sendtime,$shortsubj,$fromname,$fromdomain,$count,$origcid) =
+ split(/\:/,&Apache::lonnet::unescape($2));
+ $course_context = $origcid;
+ last;
+ }
+ }
+ unless(defined($course_context)) {
+ $course_context = $env{'request.course.id'};
+ }
my $now=time;
- $msgcount++;
- my $msgid=$now.'_'.$ENV{'user.name'}.'_'.
- $ENV{'user.domain'}.'_'.$msgcount.'_'.$$;
- return $msgid,
- '<sendername>'.$ENV{'user.name'}.'</sendername>'.
- '<senderdomain>'.$ENV{'user.domain'}.'</senderdomain>'.
+ my $msgcount = &get_uniq();
+ unless(defined($msgid)) {
+ $msgid = &buildmsgid($now,$subject,$env{'user.name'},$env{'user.domain'},
+ $msgcount,$course_context,$$);
+ }
+ my $result = '<sendername>'.$env{'user.name'}.'</sendername>'.
+ '<senderdomain>'.$env{'user.domain'}.'</senderdomain>'.
'<subject>'.$subject.'</subject>'.
- '<time>'.localtime($now).'</time>'.
- '<servername>'.$ENV{'SERVER_NAME'}.'</servername>'.
+ '<time>'.&Apache::lonlocal::locallocaltime($now).'</time>';
+ if (defined($crsmsgid)) {
+ $result.= '<courseid>'.$course_context.'</courseid>'.
+ '<coursesec>'.$env{'request.course.sec'}.'</coursesec>'.
+ '<msgid>'.$msgid.'</msgid>'.
+ '<coursemsgid>'.$crsmsgid.'</coursemsgid>'.
+ '<message>'.$message.'</message>';
+ return ($msgid,$result);
+ }
+ $result .= '<servername>'.$ENV{'SERVER_NAME'}.'</servername>'.
'<host>'.$ENV{'HTTP_HOST'}.'</host>'.
'<client>'.$ENV{'REMOTE_ADDR'}.'</client>'.
- '<browsertype>'.$ENV{'browser.type'}.'</browsertype>'.
- '<browseros>'.$ENV{'browser.os'}.'</browseros>'.
- '<browserversion>'.$ENV{'browser.version'}.'</browserversion>'.
- '<browsermathml>'.$ENV{'browser.mathml'}.'</browsermathml>'.
+ '<browsertype>'.$env{'browser.type'}.'</browsertype>'.
+ '<browseros>'.$env{'browser.os'}.'</browseros>'.
+ '<browserversion>'.$env{'browser.version'}.'</browserversion>'.
+ '<browsermathml>'.$env{'browser.mathml'}.'</browsermathml>'.
'<browserraw>'.$ENV{'HTTP_USER_AGENT'}.'</browserraw>'.
- '<courseid>'.$ENV{'request.course.id'}.'</courseid>'.
- '<role>'.$ENV{'request.role'}.'</role>'.
- '<resource>'.$ENV{'request.filename'}.'</resource>'.
- '<msgid>'.$msgid.'</msgid>'.
- '<message>'.$message.'</message>';
+ '<courseid>'.$course_context.'</courseid>'.
+ '<coursesec>'.$env{'request.course.sec'}.'</coursesec>'.
+ '<role>'.$env{'request.role'}.'</role>'.
+ '<resource>'.$env{'request.filename'}.'</resource>'.
+ '<msgid>'.$msgid.'</msgid>';
+ if (ref($recuser) eq 'ARRAY') {
+ for (my $i=0; $i<@{$recuser}; $i++) {
+ if ($type eq 'dcmail') {
+ my ($username,$email) = split(/:/,$$recuser[$i]);
+ $username = &Apache::lonnet::unescape($username);
+ $email = &Apache::lonnet::unescape($email);
+ $username = &HTML::Entities::encode($username,'<>&"');
+ $email = &HTML::Entities::encode($email,'<>&"');
+ $result .= '<recipient username="'.$username.'">'.
+ $email.'</recipient>';
+ } else {
+ $result .= '<recuser>'.$$recuser[$i].'</recuser>'.
+ '<recdomain>'.$$recdomain[$i].'</recdomain>';
+ }
+ }
+ } else {
+ $result .= '<recuser>'.$recuser.'</recuser>'.
+ '<recdomain>'.$recdomain.'</recdomain>';
+ }
+ $result .= '<message>'.$message.'</message>';
+ if (defined($citation)) {
+ $result.='<citation>'.$citation.'</citation>';
+ }
+ if (defined($baseurl)) {
+ $result.= '<baseurl>'.$baseurl.'</baseurl>';
+ }
+ if (defined($attachmenturl)) {
+ $result.= '<attachmenturl>'.$attachmenturl.'</attachmenturl>';
+ }
+ return $msgid,$result;
}
# ================================================== Unpack message into a hash
sub unpackagemsg {
- my $message=shift;
+ my ($message,$notoken)=@_;
my %content=();
my $parser=HTML::TokeParser->new(\$message);
my $token;
@@ -62,14 +147,129 @@ sub unpackagemsg {
if ($token->[0] eq 'S') {
my $entry=$token->[1];
my $value=$parser->get_text('/'.$entry);
- $content{$entry}=$value;
+ if (($entry eq 'recuser') || ($entry eq 'recdomain')) {
+ push(@{$content{$entry}},$value);
+ } elsif ($entry eq 'recipient') {
+ my $username = $token->[2]{'username'};
+ $username = &HTML::Entities::decode($username,'<>&"');
+ $content{$entry}{$username} = $value;
+ } else {
+ $content{$entry}=$value;
+ }
+ }
+ }
+ if (!exists($content{'recuser'})) { $content{'recuser'} = []; }
+ if ($content{'attachmenturl'}) {
+ my ($fname)=($content{'attachmenturl'}=~m|/([^/]+)$|);
+ if ($notoken) {
+ $content{'message'}.='<p>'.&mt('Attachment').': <tt>'.$fname.'</tt>';
+ } else {
+ &Apache::lonnet::allowuploaded('/adm/msg',
+ $content{'attachmenturl'});
+ $content{'message'}.='<p>'.&mt('Attachment').
+ ': <a href="'.$content{'attachmenturl'}.'"><tt>'.
+ $fname.'</tt></a>';
}
}
return %content;
}
+# ======================================================= Get info out of msgid
+
+sub buildmsgid {
+ my ($now,$subject,$uname,$udom,$msgcount,$course_context,$pid) = @_;
+ $subject=&Apache::lonnet::escape($subject);
+ return(&Apache::lonnet::escape($now.':'.$subject.':'.$uname.':'.
+ $udom.':'.$msgcount.':'.$course_context.':'.$pid));
+}
+
+sub unpackmsgid {
+ my ($msgid,$folder,$skipstatus,$status_cache)=@_;
+ $msgid=&Apache::lonnet::unescape($msgid);
+ my ($sendtime,$shortsubj,$fromname,$fromdomain,$count,$fromcid,
+ $processid)=split(/\:/,&Apache::lonnet::unescape($msgid));
+ if (!defined($processid)) { $fromcid = ''; }
+ my %status=();
+ unless ($skipstatus) {
+ if (ref($status_cache)) {
+ $status{$msgid} = $status_cache->{$msgid};
+ } else {
+ my $suffix=&foldersuffix($folder);
+ %status=&Apache::lonnet::get('email_status'.$suffix,[$msgid]);
+ }
+ if ($status{$msgid}=~/^error\:/) { $status{$msgid}=''; }
+ unless ($status{$msgid}) { $status{$msgid}='new'; }
+ }
+ return ($sendtime,$shortsubj,$fromname,$fromdomain,$status{$msgid},$fromcid);
+}
+
+
+sub sendemail {
+ my ($to,$subject,$body)=@_;
+ $body=
+ "*** ".&mt('This is an automatic message generated by the LON-CAPA system.')."\n".
+ "*** ".&mt('Please do not reply to this address.')."\n\n".$body;
+ my $msg = new Mail::Send;
+ $msg->to($to);
+ $msg->subject('[LON-CAPA] '.$subject);
+ if (my $fh = $msg->open()) {
+ print $fh $body;
+ $fh->close;
+ }
+}
+
+# ==================================================== Send notification emails
+
+sub sendnotification {
+ my ($to,$touname,$toudom,$subj,$crit,$text)=@_;
+ my $sender=$env{'environment.firstname'}.' '.$env{'environment.lastname'};
+ unless ($sender=~/\w/) {
+ $sender=$env{'user.name'}.'@'.$env{'user.domain'};
+ }
+ my $critical=($crit?' critical':'');
+ $text=~s/\<\;/\</gs;
+ $text=~s/\>\;/\>/gs;
+ $text=~s/\<\/*[^\>]+\>//gs;
+ my $url='http://'.
+ $Apache::lonnet::hostname{&Apache::lonnet::homeserver($touname,$toudom)}.
+ '/adm/email?username='.$touname.'&domain='.$toudom;
+ my $body=(<<ENDMSG);
+You received a$critical message from $sender in LON-CAPA. The subject is
+
+ $subj
+
+=== Excerpt ============================================================
+$text
+========================================================================
+
+Use
+
+ $url
+
+to access the full message.
+ENDMSG
+ &sendemail($to,'New'.$critical.' message from '.$sender,$body);
+}
+# ============================================================= Check for email
+
+sub newmail {
+ if ((time-$env{'user.mailcheck.time'})>300) {
+ my %what=&Apache::lonnet::get('email_status',['recnewemail']);
+ &Apache::lonnet::appenv('user.mailcheck.time'=>time);
+ if ($what{'recnewemail'}>0) { return 1; }
+ }
+ return 0;
+}
+
# =============================== Automated message to the author of a resource
+=pod
+
+=item * B<author_res_msg($filename, $message)>: Sends message $message to the owner
+ of the resource with the URI $filename.
+
+=cut
+
sub author_res_msg {
my ($filename,$message)=@_;
unless ($message) { return 'empty'; }
@@ -88,73 +288,285 @@ sub author_res_msg {
return 'no_host';
}
+# =========================================== Retrieve author resource messages
+
+sub retrieve_author_res_msg {
+ my $url=shift;
+ $url=&Apache::lonnet::declutter($url);
+ my ($domain,$author)=($url=~/^(\w+)\/(\w+)\//);
+ my %errormsgs=&Apache::lonnet::dump('nohist_res_msgs',$domain,$author);
+ my $msgs='';
+ foreach (keys %errormsgs) {
+ if ($_=~/^\Q$url\E\_\d+$/) {
+ my %content=&unpackagemsg($errormsgs{$_});
+ $msgs.='<p><img src="/adm/lonMisc/bomb.gif" /><b>'.
+ $content{'time'}.'</b>: '.$content{'message'}.
+ '<br /></p>';
+ }
+ }
+ return $msgs;
+}
+
+
+# =============================== Delete all author messages related to one URL
+
+sub del_url_author_res_msg {
+ my $url=shift;
+ $url=&Apache::lonnet::declutter($url);
+ my ($domain,$author)=($url=~/^(\w+)\/(\w+)\//);
+ my @delmsgs=();
+ foreach (&Apache::lonnet::getkeys('nohist_res_msgs',$domain,$author)) {
+ if ($_=~/^\Q$url\E\_\d+$/) {
+ push (@delmsgs,$_);
+ }
+ }
+ return &Apache::lonnet::del('nohist_res_msgs',\@delmsgs,$domain,$author);
+}
+# =================================== Clear out all author messages in URL path
+
+sub clear_author_res_msg {
+ my $url=shift;
+ $url=&Apache::lonnet::declutter($url);
+ my ($domain,$author)=($url=~/^(\w+)\/(\w+)\//);
+ my @delmsgs=();
+ foreach (&Apache::lonnet::getkeys('nohist_res_msgs',$domain,$author)) {
+ if ($_=~/^\Q$url\E/) {
+ push (@delmsgs,$_);
+ }
+ }
+ return &Apache::lonnet::del('nohist_res_msgs',\@delmsgs,$domain,$author);
+}
+# ================= Return hash with URLs for which there is a resource message
+
+sub all_url_author_res_msg {
+ my ($author,$domain)=@_;
+ my %returnhash=();
+ foreach (&Apache::lonnet::getkeys('nohist_res_msgs',$domain,$author)) {
+ $_=~/^(.+)\_\d+/;
+ $returnhash{$1}=1;
+ }
+ return %returnhash;
+}
+
# ================================================== Critical message to a user
-sub user_crit_msg {
- my ($user,$domain,$subject,$message)=@_;
+sub user_crit_msg_raw {
+ my ($user,$domain,$subject,$message,$sendback,$toperm,$sentmessage)=@_;
# Check if allowed missing
my $status='';
my $msgid='undefined';
unless (($message)&&($user)&&($domain)) { $status='empty'; };
+ my $text=$message;
my $homeserver=&Apache::lonnet::homeserver($user,$domain);
if ($homeserver ne 'no_host') {
- my $msgid;
($msgid,$message)=&packagemsg($subject,$message);
- $status=&Apache::lonnet::cput('critical',$msgid => $message);
+ if ($sendback) { $message.='<sendback>true</sendback>'; }
+ $status=&Apache::lonnet::critical(
+ 'put:'.$domain.':'.$user.':critical:'.
+ &Apache::lonnet::escape($msgid).'='.
+ &Apache::lonnet::escape($message),$homeserver);
+ if (defined($sentmessage)) {
+ $$sentmessage = $message;
+ }
} else {
$status='no_host';
}
+# Notifications
+ my %userenv = &Apache::lonnet::get('environment',['critnotification',
+ 'permanentemail'],
+ $domain,$user);
+ if ($userenv{'critnotification'}) {
+ &sendnotification($userenv{'critnotification'},$user,$domain,$subject,1,
+ $text);
+ }
+ if ($toperm && $userenv{'permanentemail'}) {
+ &sendnotification($userenv{'permanentemail'},$user,$domain,$subject,1,
+ $text);
+ }
+# Log this
&Apache::lonnet::logthis(
- '<font color=yellow>INFO: Sending critical email '.$msgid.
+ 'Sending critical email '.$msgid.
', log status: '.
- &Apache::lonnet::log($ENV{'user.domain'},$ENV{'user.name'},
- $ENV{'user.home'},
+ &Apache::lonnet::log($env{'user.domain'},$env{'user.name'},
+ $env{'user.home'},
'Sending critical '.$msgid.' to '.$user.' at '.$domain.' with status: '
- .$status).'</font>');
+ .$status));
+ return $status;
+}
+
+# New routine that respects "forward" and calls old routine
+
+=pod
+
+=item * B<user_crit_msg($user, $domain, $subject, $message, $sendback)>: Sends
+ a critical message $message to the $user at $domain. If $sendback is true,
+ a reciept will be sent to the current user when $user recieves the message.
+
+=cut
+
+sub user_crit_msg {
+ my ($user,$domain,$subject,$message,$sendback,$toperm,$sentmessage)=@_;
+ my $status='';
+ my %userenv = &Apache::lonnet::get('environment',['msgforward'],
+ $domain,$user);
+ my $msgforward=$userenv{'msgforward'};
+ if ($msgforward) {
+ foreach (split(/\,/,$msgforward)) {
+ my ($forwuser,$forwdomain)=split(/\:/,$_);
+ $status.=
+ &user_crit_msg_raw($forwuser,$forwdomain,$subject,$message,
+ $sendback,$toperm,$sentmessage).' ';
+ }
+ } else {
+ $status=&user_crit_msg_raw($user,$domain,$subject,$message,$sendback,$toperm,$sentmessage);
+ }
return $status;
}
# =================================================== Critical message received
sub user_crit_received {
- my $message=shift;
-
+ my $msgid=shift;
+ my %message=&Apache::lonnet::get('critical',[$msgid]);
+ my %contents=&unpackagemsg($message{$msgid},1);
+ my $status='rec: '.($contents{'sendback'}?
+ &user_normal_msg($contents{'sendername'},$contents{'senderdomain'},
+ &mt('Receipt').': '.$env{'user.name'}.' '.&mt('at').' '.$env{'user.domain'}.', '.$contents{'subject'},
+ &mt('User').' '.$env{'user.name'}.' '.&mt('at').' '.$env{'user.domain'}.
+ ' acknowledged receipt of message'."\n".' "'.
+ $contents{'subject'}.'"'."\n".&mt('dated').' '.
+ $contents{'time'}.".\n"
+ ):'no msg req');
+ $status.=' trans: '.
+ &Apache::lonnet::put(
+ 'nohist_email',{$contents{'msgid'} => $message{$msgid}});
+ $status.=' del: '.
+ &Apache::lonnet::del('critical',[$contents{'msgid'}]);
+ &Apache::lonnet::log($env{'user.domain'},$env{'user.name'},
+ $env{'user.home'},'Received critical message '.
+ $contents{'msgid'}.
+ ', '.$status);
+ return $status;
}
# ======================================================== Normal communication
-sub user_normal_msg {
- my ($user,$domain,$subject,$message)=@_;
+sub user_normal_msg_raw {
+ my ($user,$domain,$subject,$message,$citation,$baseurl,$attachmenturl,
+ $toperm,$currid,$newid,$sentmessage,$crsmsgid)=@_;
# Check if allowed missing
- my $status='';
+ my ($status,$packed_message);
my $msgid='undefined';
+ my $text=$message;
unless (($message)&&($user)&&($domain)) { $status='empty'; };
my $homeserver=&Apache::lonnet::homeserver($user,$domain);
if ($homeserver ne 'no_host') {
- my $msgid;
- ($msgid,$message)=&packagemsg($subject,$message);
- $status=&Apache::lonnet::cput('nohist_email',$msgid => $message);
+ ($msgid,$packed_message)=
+ &packagemsg($subject,$message,$citation,$baseurl,
+ $attachmenturl,$user,$domain,$currid,
+ undef,$crsmsgid);
+
+# Store in user folder
+ $status=&Apache::lonnet::critical(
+ 'put:'.$domain.':'.$user.':nohist_email:'.
+ &Apache::lonnet::escape($msgid).'='.
+ &Apache::lonnet::escape($packed_message),$homeserver);
+# Save new message received time
+ &Apache::lonnet::put
+ ('email_status',{'recnewemail'=>time},$domain,$user);
+# Into sent-mail folder unless a broadcast message or critical message
+ unless (($env{'request.course.id'}) &&
+ (($env{'form.sendmode'} eq 'group') ||
+ (($env{'form.critmsg'}) || ($env{'form.sendbck'})) &&
+ (&Apache::lonnet::allowed('srm',$env{'request.course.id'})
+ || &Apache::lonnet::allowed('srm',$env{'request.course.id'}.
+ '/'.$env{'request.course.sec'})))) {
+ (undef, my $packed_message_no_citation)=
+ &packagemsg($subject,$message,undef ,$baseurl,
+ $attachmenturl,$user,$domain,$currid,
+ undef,$crsmsgid);
+
+ $status .= &store_sent_mail($msgid,$packed_message_no_citation);
+ }
} else {
$status='no_host';
}
- &Apache::lonnet::log($ENV{'user.domain'},$ENV{'user.name'},
- $ENV{'user.home'},
+ if (defined($newid)) {
+ $$newid = $msgid;
+ }
+ if (defined($sentmessage)) {
+ $$sentmessage = $packed_message;
+ }
+
+# Notifications
+ my %userenv = &Apache::lonnet::get('environment',['notification',
+ 'permanentemail'],
+ $domain,$user);
+ if ($userenv{'notification'}) {
+ &sendnotification($userenv{'notification'},$user,$domain,$subject,0,
+ $text);
+ }
+ if ($toperm && $userenv{'permanentemail'}) {
+ &sendnotification($userenv{'permanentemail'},$user,$domain,$subject,0,
+ $text);
+ }
+ &Apache::lonnet::log($env{'user.domain'},$env{'user.name'},
+ $env{'user.home'},
'Sending '.$msgid.' to '.$user.' at '.$domain.' with status: '.$status);
return $status;
}
-# ================================================= Main program, reset counter
+# New routine that respects "forward" and calls old routine
-sub BEGIN {
- $msgcount=0;
-}
+=pod
-1;
-__END__
+=item * B<user_normal_msg($user, $domain, $subject, $message,
+ $citation, $baseurl, $attachmenturl)>: Sends a message to the
+ $user at $domain, with subject $subject and message $message.
+=cut
+sub user_normal_msg {
+ my ($user,$domain,$subject,$message,$citation,$baseurl,$attachmenturl,
+ $toperm,$sentmessage)=@_;
+ my $status='';
+ my %userenv = &Apache::lonnet::get('environment',['msgforward'],
+ $domain,$user);
+ my $msgforward=$userenv{'msgforward'};
+ if ($msgforward) {
+ foreach (split(/\,/,$msgforward)) {
+ my ($forwuser,$forwdomain)=split(/\:/,$_);
+ $status.=
+ &user_normal_msg_raw($forwuser,$forwdomain,$subject,$message,
+ $citation,$baseurl,$attachmenturl,$toperm,
+ undef,undef,$sentmessage).' ';
+ }
+ } else {
+ $status=&user_normal_msg_raw($user,$domain,$subject,$message,
+ $citation,$baseurl,$attachmenturl,$toperm,
+ undef,undef,$sentmessage);
+ }
+ return $status;
+}
+sub store_sent_mail {
+ my ($msgid,$message) = @_;
+ my $status =' '.&Apache::lonnet::critical(
+ 'put:'.$env{'user.domain'}.':'.$env{'user.name'}.
+ ':nohist_email_sent:'.
+ &Apache::lonnet::escape($msgid).'='.
+ &Apache::lonnet::escape($message),$env{'user.home'});
+ return $status;
+}
+# =============================================================== Folder suffix
+sub foldersuffix {
+ my $folder=shift;
+ unless ($folder) { return ''; }
+ return '_'.&Apache::lonnet::escape($folder);
+}
+1;
+__END__