Annotation of loncom/interface/lonchatfetch.pm, revision 1.18
1.1 www 1: # The LearningOnline Network
2: # Chat Fetching
3: #
1.18 ! albertel 4: # $Id: lonchatfetch.pm,v 1.17 2005/04/07 06:56:22 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 $r = shift;
1.12 matthew 39:
1.17 albertel 40: if (! &Apache::lonnet::allowed('pch',$env{'request.course.id'}.
41: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))
1.12 matthew 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,
1.17 albertel 50: $env{'course.'.$env{'request.course.id'}.'.home'});
1.6 www 51: if ($loaderror) { return $loaderror; }
52:
1.16 albertel 53: &Apache::loncommon::content_type($r,'text/html');
1.1 www 54: $r->send_http_header;
55: return OK if $r->header_only;
56:
57: # ------------------------------------------------------------ retrieve entries
58:
1.17 albertel 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.'.$env{'request.course.id'}.'.home'};
1.4 www 62:
1.1 www 63: my @entries=split(/\:/,
1.8 www 64: &Apache::lonnet::reply(
1.17 albertel 65: "chatretr:$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?
1.17 albertel 76: my $crs='/'.$env{'request.course.id'};
77: if ($env{'request.course.sec'}) {
78: $crs.='_'.$env{'request.course.sec'};
1.4 www 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 $bottomid='';
1.17 albertel 87: unless ($env{'form.lastid'}) {
1.2 www 88: $include=1;
1.15 albertel 89: my $html=&Apache::lonxml::xmlbegin();
90: $newstuff=$html.'<head></head><body bgcolor="#FFFFFF">';
1.2 www 91: }
1.9 www 92: my @participants=();
1.1 www 93: foreach (@entries) {
1.9 www 94: my ($id,$msg,$udom)=split(/\:/,&Apache::lonnet::unescape($_));
95: if ($id eq 'active_participant') {
96: chomp($udom);
1.14 www 97: my $participant= &Apache::loncommon::nickname($msg,$udom);
98: unless ($participant=~/\w/) { $participant=$msg.'@'.$udom; }
99: $participants[$#participants+1]=$participant;
1.9 www 100: } elsif ($include) {
101: chomp($msg);
102: my ($msgtime,$msgnum)=split(/\_/,$id);
103: my ($sdom,$snum,$anon,$contrib)=split(/\:/,
104: &Apache::lonnet::unescape($msg));
105: $contrib=&Apache::lonnet::unescape($contrib);
1.18 ! albertel 106: &Apache::lonfeedback::newline_to_br(\$contrib);
1.11 albertel 107: ($contrib,my $errors)=&Apache::lontexconvert::msgtexconverted($contrib);
108: if ($errors) { $contrib.="[Message not fully displayed due to incorrect embedded TeX]"; }
1.17 albertel 109: if ($errors && $snum eq $env{'user.name'} &&
110: $sdom eq $env{'user.domain'} ) {
1.11 albertel 111: $contrib.="<br />[TeX error message: $errors]";
112: }
1.9 www 113: $contrib=~s/\n/ /g;
114: $contrib=~s/\'/\&\#39\;/g;
115: my $sender='';
116: if ($seeid) {
117: $sender=&Apache::loncommon::plainname($snum,$sdom);
118: my $nick=&Apache::loncommon::nickname($snum,$sdom);
119: if (($nick) && ($nick ne $sender)) {
120: $sender.=' '.$nick;
121: }
1.14 www 122: unless ($sender) { $sender=$snum.'@'.$sdom; }
1.9 www 123: if ($anon) { $sender.=' [Anon]' };
124: } elsif (!$anon) {
125: $sender=&Apache::loncommon::nickname($snum,$sdom);
1.14 www 126: unless ($sender) { $sender=$snum.'@'.$sdom; }
1.7 www 127: } else {
1.9 www 128: $sender=&Apache::loncommon::screenname($snum,$sdom);
129: unless ($sender) { $sender="Anonymous"; }
1.7 www 130: }
1.13 www 131: $sender=~s/\'/\&\#39\;/g;
1.9 www 132: my $color=$sender;
133: $color=~tr/a-j/0-9/;
134: $color=~tr/A-J/0-9/;
135: $color=~tr/k-t/0-9/;
136: $color=~tr/K-T/0-9/;
137: $color=~tr/u-z/0-5/;
138: $color=~tr/U-Z/0-5/;
139: $color=~s/\D//g;
140: $color=substr($color,0,6);
141: my $timestamp=localtime($msgtime);
142: my ($mhour,$mmin,$msec)=($timestamp=~/(\d\d)\:(\d\d)\:(\d\d)/);
143: $newstuff.='<font color="#'.$color.'"><a name="'.$id.'"><b>'.
144: $sender.'</b> ('.$mhour.':'.$mmin.':'.$msec.'): '.
145: $contrib."</font><br>";
146: $bottomid=$id;
147: } else {
148: $_=~/^(\w+)/;
1.17 albertel 149: if ($1 eq $env{'form.lastid'}) { $include=1; }
1.9 www 150: }
1.1 www 151: }
1.9 www 152: my $participant_output=join('<br />',sort @participants);
1.15 albertel 153: my $html=&Apache::lonxml::xmlbegin();
1.1 www 154: $r->print(<<ENDDOCUMENT);
1.15 albertel 155: $html
1.1 www 156: <head>
157: <title>The LearningOnline Network with CAPA</title>
158: <meta HTTP-EQUIV="Refresh" CONTENT="5; url=/adm/chatfetch?lastid=$lastid">
159: </head>
160: <body bgcolor="#FFFFFF">
161: <script>
162: parent.chatout.document.writeln('$newstuff');
1.3 www 163: parent.chatout.scroll(0,10000000);
1.1 www 164: </script>
1.9 www 165: $participant_output
1.1 www 166: </body>
167: </html>
168: ENDDOCUMENT
169: return OK;
170: }
171:
172: 1;
173: __END__
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