1: # The LearningOnline Network
2: # Chat
3: #
4: # $Id: lonchat.pm,v 1.18 2009/02/25 16:39:54 hauer 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: use Apache::lonlocal;
36:
37: sub handler {
38: my $r = shift;
39: &Apache::loncommon::content_type($r,'text/html');
40: $r->send_http_header;
41: return OK if $r->header_only;
42:
43: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['group']);
44: my ($group,$group_elem);
45: if (defined($env{'form.group'})) {
46: $group = $env{'form.group'};
47: $group_elem = '<input type="hidden" name="group" value="'.$group.'" />';
48: if ((! &Apache::lonnet::allowed('pgc',$env{'request.course.id'}.'/'.
49: $group))
50: && (! &Apache::lonnet::allowed('vcg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:'')))) {
51: return HTTP_NOT_ACCEPTABLE;
52: }
53: } else {
54: if (! &Apache::lonnet::allowed('plc',$env{'request.course.id'}.
55: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:'')
56: )) {
57: return HTTP_NOT_ACCEPTABLE;
58: }
59: }
60:
61: if ($env{'form.newchat'}) {
62: &Apache::lonnet::chatsend(&Apache::lonfeedback::clear_out_html($env{'form.newchat'}),$env{'form.anonymous'},$group);
63: }
64: # --------------------------------------------------- Print login screen header
65: my $latexHelp = Apache::loncommon::helpLatexCheatsheet(undef,undef,1);
66: my %loaditems = (onload => 'this.document.chatentry.newchat.focus();');
67: my $start_page =
68: &Apache::loncommon::start_page('Chat Room',undef,
69: {'only_body' => 1,
70: 'add_entries' => \%loaditems,});
71: my $end_page = &Apache::loncommon::end_page();
72: my %lt = &Apache::lonlocal::texthash(
73: anon => 'Post Anonymous',
74: post => 'Post',
75: );
76: $r->print(<<ENDDOCUMENT);
77: $start_page
78: <form method="post" name="chatentry">
79: $latexHelp
80: <input type="text" size="60" name="newchat">
81: <input value="$lt{'anon'}" name="anonymous" type="submit">
82: <input value="$lt{'post'}" name="newentry" type="submit">
83: $group_elem
84: </form>
85: $end_page
86: ENDDOCUMENT
87: return OK;
88: }
89:
90: 1;
91: __END__
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