1: # The LearningOnline Network
2: # Chat Fetching
3: #
4: # $Id: lonchatfetch.pm,v 1.9 2003/03/29 01:39:10 www Exp $
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;
32: use Apache::Constants qw(:common);
33: use Apache::lontexconvert;
34: use Apache::loncommon;
35: use Apache::lonnet;
36:
37: sub handler {
38: my $r = shift;
39:
40: my $loaderror=&Apache::lonnet::overloaderror($r);
41: if ($loaderror) { return $loaderror; }
42: $loaderror=
43: &Apache::lonnet::overloaderror($r,
44: $ENV{'course.'.$ENV{'request.course.id'}.'.home'});
45: if ($loaderror) { return $loaderror; }
46:
47: $r->content_type('text/html');
48: $r->send_http_header;
49: return OK if $r->header_only;
50:
51: # ------------------------------------------------------------ retrieve entries
52:
53: my $cnum=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
54: my $cdom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
55: my $chome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
56:
57: my @entries=split(/\:/,
58: &Apache::lonnet::reply(
59: "chatretr:$cdom:$cnum:$ENV{'user.domain'}:$ENV{'user.name'}",$chome));
60: my ($lastid)=($entries[$#entries]=~/^(\w+)/);
61: my ($thentime,$idnum)=split(/\_/,$lastid);
62: # ----------------------------------------------------------- Can see identity?
63: my $crs='/'.$ENV{'request.course.id'};
64: if ($ENV{'request.course.sec'}) {
65: $crs.='_'.$ENV{'request.course.sec'};
66: }
67: $crs=~s/\_/\//g;
68: my $seeid=&Apache::lonnet::allowed('rin',$crs);
69: # -------------------------------------------------------- see which ones apply
70: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['lastid']);
71: my $include=0;
72: my $newstuff='';
73: my $bottomid='';
74: unless ($ENV{'form.lastid'}) {
75: $include=1;
76: $newstuff='<html><body bgcolor="#FFFFFF">';
77: }
78: my @participants=();
79: foreach (@entries) {
80: my ($id,$msg,$udom)=split(/\:/,&Apache::lonnet::unescape($_));
81: if ($id eq 'active_participant') {
82: chomp($udom);
83: $participants[$#participants+1]=
84: &Apache::loncommon::nickname($msg,$udom);
85: } elsif ($include) {
86: chomp($msg);
87: my ($msgtime,$msgnum)=split(/\_/,$id);
88: my ($sdom,$snum,$anon,$contrib)=split(/\:/,
89: &Apache::lonnet::unescape($msg));
90: $contrib=&Apache::lonnet::unescape($contrib);
91: $contrib=~s/\n/\<br \/\>/g;
92: $contrib=&Apache::lontexconvert::msgtexconverted($contrib);
93: $contrib=~s/\n/ /g;
94: $contrib=~s/\'/\&\#39\;/g;
95: my $sender='';
96: if ($seeid) {
97: $sender=&Apache::loncommon::plainname($snum,$sdom);
98: my $nick=&Apache::loncommon::nickname($snum,$sdom);
99: if (($nick) && ($nick ne $sender)) {
100: $sender.=' '.$nick;
101: }
102: if ($anon) { $sender.=' [Anon]' };
103: } elsif (!$anon) {
104: $sender=&Apache::loncommon::nickname($snum,$sdom);
105: } else {
106: $sender=&Apache::loncommon::screenname($snum,$sdom);
107: unless ($sender) { $sender="Anonymous"; }
108: }
109: $sender=~s/\'/\"/g;
110: my $color=$sender;
111: $color=~tr/a-j/0-9/;
112: $color=~tr/A-J/0-9/;
113: $color=~tr/k-t/0-9/;
114: $color=~tr/K-T/0-9/;
115: $color=~tr/u-z/0-5/;
116: $color=~tr/U-Z/0-5/;
117: $color=~s/\D//g;
118: $color=substr($color,0,6);
119: my $timestamp=localtime($msgtime);
120: my ($mhour,$mmin,$msec)=($timestamp=~/(\d\d)\:(\d\d)\:(\d\d)/);
121: $newstuff.='<font color="#'.$color.'"><a name="'.$id.'"><b>'.
122: $sender.'</b> ('.$mhour.':'.$mmin.':'.$msec.'): '.
123: $contrib."</font><br>";
124: $bottomid=$id;
125: } else {
126: $_=~/^(\w+)/;
127: if ($1 eq $ENV{'form.lastid'}) { $include=1; }
128: }
129: }
130: my $participant_output=join('<br />',sort @participants);
131: $r->print(<<ENDDOCUMENT);
132: <html>
133: <head>
134: <title>The LearningOnline Network with CAPA</title>
135: <meta HTTP-EQUIV="Refresh" CONTENT="5; url=/adm/chatfetch?lastid=$lastid">
136: </head>
137: <body bgcolor="#FFFFFF">
138: <script>
139: parent.chatout.document.writeln('$newstuff');
140: parent.chatout.scroll(0,10000000);
141: </script>
142: $participant_output
143: </body>
144: </html>
145: ENDDOCUMENT
146: return OK;
147: }
148:
149: 1;
150: __END__
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