1: # The LearningOnline Network
2: # Chat
3: #
4: # $Id: lonchat.pm,v 1.12 2006/03/29 19:56:28 raeburn 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::lonchat;
30:
31: use strict;
32: use Apache::Constants qw(:common :http);
33: use Apache::loncommon;
34: use Apache::lonnet;
35:
36: sub handler {
37: my $r = shift;
38: &Apache::loncommon::content_type($r,'text/html');
39: $r->send_http_header;
40: return OK if $r->header_only;
41:
42: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['group']);
43: my ($group,$group_elem);
44: if (defined($env{'form.group'})) {
45: $group = $env{'form.group'};
46: $group_elem = '<input type="hidden" name="group" value="'.$group.'" />';
47: if (! &Apache::lonnet::allowed('pgc',$env{'request.course.id'}.'/'.
48: $group) ) {
49: return HTTP_NOT_ACCEPTABLE;
50: }
51: } else {
52: if (! &Apache::lonnet::allowed('plc',$env{'request.course.id'}.
53: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:'')
54: )) {
55: return HTTP_NOT_ACCEPTABLE;
56: }
57: }
58:
59: if ($env{'form.newchat'}) {
60: &Apache::lonnet::chatsend(&Apache::lonfeedback::clear_out_html($env{'form.newchat'}),$env{'form.anonymous'},$group);
61: }
62: # --------------------------------------------------- Print login screen header
63: my $latexHelp = Apache::loncommon::helpLatexCheatsheet();
64: my $loaditems = 'onLoad="this.document.chatentry.newchat.focus();"';
65: my $start_page =
66: &Apache::loncommon::start_page('Chat',undef,
67: {'only_body' => 1,
68: 'add_entries' => $loaditems,});
69: my $end_page = &Apache::loncommon::end_page();
70: $r->print(<<ENDDOCUMENT);
71: $start_page
72: <form method="post" name="chatentry">
73: $latexHelp
74: <input type="text" size="60" name="newchat">
75: <input value="Post Anonymous" name="anonymous" type="submit">
76: <input value="Post" name="newentry" type="submit">
77: $group_elem
78: </form>
79: $end_page
80: ENDDOCUMENT
81: return OK;
82: }
83:
84: 1;
85: __END__
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