Annotation of loncom/interface/lonchatfetch.pm, revision 1.12
1.1 www 1: # The LearningOnline Network
2: # Chat Fetching
3: #
1.12 ! matthew 4: # $Id: lonchatfetch.pm,v 1.11 2003/06/23 21:30:42 albertel Exp $
1.1 www 5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28:
29: package Apache::lonchatfetch;
30:
31: use strict;
1.12 ! matthew 32: use Apache::Constants qw(:common :http);
1.1 www 33: use Apache::lontexconvert;
1.4 www 34: use Apache::loncommon;
35: use Apache::lonnet;
1.1 www 36:
37: sub handler {
38: my $r = shift;
1.12 ! matthew 39:
! 40: if (! &Apache::lonnet::allowed('pch',$ENV{'request.course.id'}.
! 41: ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))
! 42: ) {
! 43: return HTTP_NOT_ACCEPTABLE;
! 44: }
1.6 www 45:
46: my $loaderror=&Apache::lonnet::overloaderror($r);
47: if ($loaderror) { return $loaderror; }
48: $loaderror=
49: &Apache::lonnet::overloaderror($r,
50: $ENV{'course.'.$ENV{'request.course.id'}.'.home'});
51: if ($loaderror) { return $loaderror; }
52:
1.1 www 53: $r->content_type('text/html');
54: $r->send_http_header;
55: return OK if $r->header_only;
56:
57: # ------------------------------------------------------------ retrieve entries
58:
59: my $cnum=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
60: my $cdom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
61: my $chome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
1.4 www 62:
1.1 www 63: my @entries=split(/\:/,
1.8 www 64: &Apache::lonnet::reply(
65: "chatretr:$cdom:$cnum:$ENV{'user.domain'}:$ENV{'user.name'}",$chome));
1.10 www 66: # Figure out what the last valid entry-id is
67: my ($lastid,$thentime,$idnum);
68: foreach (@entries) {
69: $_=~/^(\w+)/;
70: if ($1 ne 'active_participant') {
71: $lastid=$1;
72: ($thentime,$idnum)=split(/\_/,$lastid);
73: }
74: }
1.4 www 75: # ----------------------------------------------------------- Can see identity?
76: my $crs='/'.$ENV{'request.course.id'};
77: if ($ENV{'request.course.sec'}) {
78: $crs.='_'.$ENV{'request.course.sec'};
79: }
80: $crs=~s/\_/\//g;
81: my $seeid=&Apache::lonnet::allowed('rin',$crs);
1.1 www 82: # -------------------------------------------------------- see which ones apply
83: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['lastid']);
84: my $include=0;
85: my $newstuff='';
1.3 www 86: my $bottomid='';
1.2 www 87: unless ($ENV{'form.lastid'}) {
88: $include=1;
89: $newstuff='<html><body bgcolor="#FFFFFF">';
90: }
1.9 www 91: my @participants=();
1.1 www 92: foreach (@entries) {
1.9 www 93: my ($id,$msg,$udom)=split(/\:/,&Apache::lonnet::unescape($_));
94: if ($id eq 'active_participant') {
95: chomp($udom);
96: $participants[$#participants+1]=
97: &Apache::loncommon::nickname($msg,$udom);
98: } elsif ($include) {
99: chomp($msg);
100: my ($msgtime,$msgnum)=split(/\_/,$id);
101: my ($sdom,$snum,$anon,$contrib)=split(/\:/,
102: &Apache::lonnet::unescape($msg));
103: $contrib=&Apache::lonnet::unescape($contrib);
104: $contrib=~s/\n/\<br \/\>/g;
1.11 albertel 105: ($contrib,my $errors)=&Apache::lontexconvert::msgtexconverted($contrib);
106: if ($errors) { $contrib.="[Message not fully displayed due to incorrect embedded TeX]"; }
107: if ($errors && $snum eq $ENV{'user.name'} &&
108: $sdom eq $ENV{'user.domain'} ) {
109: $contrib.="<br />[TeX error message: $errors]";
110: }
1.9 www 111: $contrib=~s/\n/ /g;
112: $contrib=~s/\'/\&\#39\;/g;
113: my $sender='';
114: if ($seeid) {
115: $sender=&Apache::loncommon::plainname($snum,$sdom);
116: my $nick=&Apache::loncommon::nickname($snum,$sdom);
117: if (($nick) && ($nick ne $sender)) {
118: $sender.=' '.$nick;
119: }
120: if ($anon) { $sender.=' [Anon]' };
121: } elsif (!$anon) {
122: $sender=&Apache::loncommon::nickname($snum,$sdom);
1.7 www 123: } else {
1.9 www 124: $sender=&Apache::loncommon::screenname($snum,$sdom);
125: unless ($sender) { $sender="Anonymous"; }
1.7 www 126: }
1.9 www 127: $sender=~s/\'/\"/g;
128: my $color=$sender;
129: $color=~tr/a-j/0-9/;
130: $color=~tr/A-J/0-9/;
131: $color=~tr/k-t/0-9/;
132: $color=~tr/K-T/0-9/;
133: $color=~tr/u-z/0-5/;
134: $color=~tr/U-Z/0-5/;
135: $color=~s/\D//g;
136: $color=substr($color,0,6);
137: my $timestamp=localtime($msgtime);
138: my ($mhour,$mmin,$msec)=($timestamp=~/(\d\d)\:(\d\d)\:(\d\d)/);
139: $newstuff.='<font color="#'.$color.'"><a name="'.$id.'"><b>'.
140: $sender.'</b> ('.$mhour.':'.$mmin.':'.$msec.'): '.
141: $contrib."</font><br>";
142: $bottomid=$id;
143: } else {
144: $_=~/^(\w+)/;
145: if ($1 eq $ENV{'form.lastid'}) { $include=1; }
146: }
1.1 www 147: }
1.9 www 148: my $participant_output=join('<br />',sort @participants);
1.1 www 149: $r->print(<<ENDDOCUMENT);
150: <html>
151: <head>
152: <title>The LearningOnline Network with CAPA</title>
153: <meta HTTP-EQUIV="Refresh" CONTENT="5; url=/adm/chatfetch?lastid=$lastid">
154: </head>
155: <body bgcolor="#FFFFFF">
156: <script>
157: parent.chatout.document.writeln('$newstuff');
1.3 www 158: parent.chatout.scroll(0,10000000);
1.1 www 159: </script>
1.9 www 160: $participant_output
1.1 www 161: </body>
162: </html>
163: ENDDOCUMENT
164: return OK;
165: }
166:
167: 1;
168: __END__
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