--- loncom/interface/lonchatfetch.pm 2002/09/16 20:15:10 1.6
+++ loncom/interface/lonchatfetch.pm 2006/03/29 19:56:28 1.21
@@ -1,7 +1,7 @@
# The LearningOnline Network
# Chat Fetching
#
-# $Id: lonchatfetch.pm,v 1.6 2002/09/16 20:15:10 www Exp $
+# $Id: lonchatfetch.pm,v 1.21 2006/03/29 19:56:28 raeburn Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -29,7 +29,7 @@
package Apache::lonchatfetch;
use strict;
-use Apache::Constants qw(:common);
+use Apache::Constants qw(:common :http);
use Apache::lontexconvert;
use Apache::loncommon;
use Apache::lonnet;
@@ -37,106 +37,171 @@ use Apache::lonnet;
sub handler {
my $r = shift;
+ &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['lastid',
+ 'group']);
+ my ($group,$grouptitle);
+ my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
+ my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
+ if (defined($env{'form.group'})) {
+ $group = $env{'form.group'};
+ if (! &Apache::lonnet::allowed('pgc',$env{'request.course.id'}.'/'.
+ $group) ) {
+ return HTTP_NOT_ACCEPTABLE;
+ }
+ my %curr_groups;
+ my $numgroups = &Apache::loncommon::coursegroups(\%curr_groups,$cdom,
+ $cnum,$group);
+ if ($numgroups) {
+ my %group_info = &Apache::loncommon::get_group_settings(
+ $curr_groups{$group});
+ $grouptitle = '<b>'.&Apache::lonnet::unescape(
+ $group_info{description}).'</b><br />';
+ }
+ } elsif (! &Apache::lonnet::allowed('pch',$env{'request.course.id'}.
+ ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))
+ ) {
+ return HTTP_NOT_ACCEPTABLE;
+ }
+
my $loaderror=&Apache::lonnet::overloaderror($r);
if ($loaderror) { return $loaderror; }
$loaderror=
&Apache::lonnet::overloaderror($r,
- $ENV{'course.'.$ENV{'request.course.id'}.'.home'});
+ $env{'course.'.$env{'request.course.id'}.'.home'});
if ($loaderror) { return $loaderror; }
- $r->content_type('text/html');
+ &Apache::loncommon::content_type($r,'text/html');
$r->send_http_header;
return OK if $r->header_only;
# ------------------------------------------------------------ retrieve entries
- my $cnum=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
- my $cdom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
- my $chome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
+ my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
my @entries=split(/\:/,
- &Apache::lonnet::reply("chatretr:$cdom:$cnum",$chome));
- my ($lastid)=($entries[$#entries]=~/^(\w+)/);
- my ($thentime,$idnum)=split(/\_/,$lastid);
+ &Apache::lonnet::reply(
+ "chatretr:$cdom:$cnum:$env{'user.domain'}:$env{'user.name'}:$group",
+ $chome));
+# Figure out what the last valid entry-id is
+ my ($lastid,$thentime,$idnum);
+ foreach (@entries) {
+ $_=~/^(\w+)/;
+ if ($1 ne 'active_participant') {
+ $lastid=$1;
+ ($thentime,$idnum)=split(/\_/,$lastid);
+ }
+ }
# ----------------------------------------------------------- Can see identity?
- my $crs='/'.$ENV{'request.course.id'};
- if ($ENV{'request.course.sec'}) {
- $crs.='_'.$ENV{'request.course.sec'};
- }
- $crs=~s/\_/\//g;
- my $seeid=&Apache::lonnet::allowed('rin',$crs);
+ my $seeid = &get_seeid_status();
# -------------------------------------------------------- see which ones apply
- &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['lastid']);
my $include=0;
my $newstuff='';
my $bottomid='';
- unless ($ENV{'form.lastid'}) {
- $include=1;
- $newstuff='<html><body bgcolor="#FFFFFF">';
+ unless ($env{'form.lastid'}) {
+ $include=1;
+ $newstuff .=
+ &Apache::loncommon::start_page(undef,undef,
+ {'only_body' => 1,
+ 'bgcolor' => '#FFFFFF',
+ 'js_ready' => 1,});
}
+ my @participants=();
foreach (@entries) {
- if ($include) {
- my ($id,$msg)=split(/\:/,&Apache::lonnet::unescape($_));
- chomp($msg);
- my ($msgtime,$msgnum)=split(/\_/,$id);
- my ($sdom,$snum,$anon,$contrib)=split(/\:/,
- &Apache::lonnet::unescape($msg));
- $contrib=&Apache::lonnet::unescape($contrib);
- $contrib=~s/\n/\<br \/\>/g;
- $contrib=&Apache::lontexconvert::msgtexconverted($contrib);
- $contrib=~s/\n/ /g;
- $contrib=~s/\'/\&\#39\;/g;
- my $sender='';
- if ($seeid) {
- $sender=&Apache::loncommon::plainname($snum,$sdom);
- my $nick=&Apache::loncommon::nickname($snum,$sdom);
- if (($nick) && ($nick ne $sender)) {
- $sender.=' '.$nick;
- }
- if ($anon) { $sender.=' [Anon]' };
- } elsif (!$anon) {
- $sender=&Apache::loncommon::nickname($snum,$sdom);
- } else {
+ my ($id,$msg,$udom)=split(/\:/,&Apache::lonnet::unescape($_));
+ if ($id eq 'active_participant') {
+ chomp($udom);
+ my $participant= &Apache::loncommon::nickname($msg,$udom);
+ unless ($participant=~/\w/) { $participant=$msg.'@'.$udom; }
+ $participants[$#participants+1]=$participant;
+ } elsif ($include) {
+ chomp($msg);
+ my ($msgtime,$msgnum)=split(/\_/,$id);
+ my ($sdom,$snum,$anon,$contrib)=split(/\:/,
+ &Apache::lonnet::unescape($msg));
+ $contrib=&Apache::lonnet::unescape($contrib);
+ &Apache::lonfeedback::newline_to_br(\$contrib);
+ ($contrib,my $errors)=&Apache::lontexconvert::msgtexconverted($contrib);
+ if ($errors) { $contrib.="[Message not fully displayed due to incorrect embedded TeX]"; }
+ if ($errors && $snum eq $env{'user.name'} &&
+ $sdom eq $env{'user.domain'} ) {
+ $contrib.="<br />[TeX error message: $errors]";
+ }
+ $contrib=~s/\n/ /g;
+ $contrib=~s/\'/\&\#39\;/g;
+ my $sender='';
+ if ($seeid) {
+ $sender=&Apache::loncommon::plainname($snum,$sdom);
+ my $nick=&Apache::loncommon::nickname($snum,$sdom);
+ if (($nick) && ($nick ne $sender)) {
+ $sender.=' '.$nick;
+ }
+ unless ($sender) { $sender=$snum.'@'.$sdom; }
+ if ($anon) { $sender.=' [Anon]' };
+ } elsif (!$anon) {
+ $sender=&Apache::loncommon::nickname($snum,$sdom);
+ unless ($sender) { $sender=$snum.'@'.$sdom; }
+ } else {
$sender=&Apache::loncommon::screenname($snum,$sdom);
- unless ($sender) { $sender="Anonymous"; }
- }
- $sender=~s/\'/\"/g;
- my $color=$sender;
- $color=~tr/a-j/0-9/;
- $color=~tr/A-J/0-9/;
- $color=~tr/k-t/0-9/;
- $color=~tr/K-T/0-9/;
- $color=~tr/u-z/0-5/;
- $color=~tr/U-Z/0-5/;
- $color=~s/\D//g;
- $color=substr($color,0,6);
- my $timestamp=localtime($msgtime);
- my ($mhour,$mmin,$msec)=($timestamp=~/(\d\d)\:(\d\d)\:(\d\d)/);
+ unless ($sender) { $sender="Anonymous"; }
+ }
+ $sender=~s/\'/\&\#39\;/g;
+ my $color=$sender;
+ $color=~tr/a-j/0-9/;
+ $color=~tr/A-J/0-9/;
+ $color=~tr/k-t/0-9/;
+ $color=~tr/K-T/0-9/;
+ $color=~tr/u-z/0-5/;
+ $color=~tr/U-Z/0-5/;
+ $color=~s/\D//g;
+ $color=substr($color,0,6);
+ my $timestamp=localtime($msgtime);
+ my ($mhour,$mmin,$msec)=($timestamp=~/(\d\d)\:(\d\d)\:(\d\d)/);
$newstuff.='<font color="#'.$color.'"><a name="'.$id.'"><b>'.
- $sender.'</b> ('.$mhour.':'.$mmin.':'.$msec.'): '.
- $contrib."</font><br>";
- $bottomid=$id;
- } else {
- $_=~/^(\w+)/;
- if ($1 eq $ENV{'form.lastid'}) { $include=1; }
- }
+ $sender.'</b> ('.$mhour.':'.$mmin.':'.$msec.'): '.
+ $contrib."</font><br>";
+ $bottomid=$id;
+ } else {
+ $_=~/^(\w+)/;
+ if ($1 eq $env{'form.lastid'}) { $include=1; }
+ }
+ }
+ my $participant_output=join('<br />',sort @participants);
+ my $refresh_cmd = "/adm/chatfetch?lastid=$lastid";
+ if (defined($group)) {
+ $refresh_cmd .= "&group=$group";
}
+ my $start_page =
+ &Apache::loncommon::start_page('Chat',undef,
+ {'redirect' => [5,$refresh_cmd],
+ 'only_body' => 1,});
+ my $end_page = &Apache::loncommon::end_page();
$r->print(<<ENDDOCUMENT);
-<html>
-<head>
-<title>The LearningOnline Network with CAPA</title>
- <meta HTTP-EQUIV="Refresh" CONTENT="5; url=/adm/chatfetch?lastid=$lastid">
-</head>
-<body bgcolor="#FFFFFF">
-<script>
+$start_page
+<script type="text/javascript">
parent.chatout.document.writeln('$newstuff');
parent.chatout.scroll(0,10000000);
</script>
-</body>
-</html>
+$grouptitle
+$participant_output
+$end_page
ENDDOCUMENT
return OK;
-}
+}
+
+sub get_seeid_status{
+ my $crs='/'.$env{'request.course.id'};
+ my $seeid;
+ if (exists($env{'form.group'})) {
+ $seeid = &Apache::lonnet::allowed('rci',$crs.'/'.$env{'form.group'});
+ } else {
+ if ($env{'request.course.sec'}) {
+ $crs.='_'.$env{'request.course.sec'};
+ }
+ $crs=~s/\_/\//g;
+ $seeid=&Apache::lonnet::allowed('rin',$crs);
+ }
+ return $seeid;
+}
1;
__END__