Annotation of loncom/interface/lonchatfetch.pm, revision 1.20
1.1 www 1: # The LearningOnline Network
2: # Chat Fetching
3: #
1.20 ! albertel 4: # $Id: lonchatfetch.pm,v 1.19 2006/03/19 22:48:53 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'}) {
1.20 ! albertel 88: $include=1;
! 89: $newstuff .=
! 90: &Apache::loncommon::start_page(undef,undef,
! 91: {'only_body' => 1,
! 92: 'bgcolor' => '#FFFFFF',
! 93: 'js_ready' => 1,});
1.2 www 94: }
1.9 www 95: my @participants=();
1.1 www 96: foreach (@entries) {
1.9 www 97: my ($id,$msg,$udom)=split(/\:/,&Apache::lonnet::unescape($_));
98: if ($id eq 'active_participant') {
99: chomp($udom);
1.14 www 100: my $participant= &Apache::loncommon::nickname($msg,$udom);
101: unless ($participant=~/\w/) { $participant=$msg.'@'.$udom; }
102: $participants[$#participants+1]=$participant;
1.9 www 103: } elsif ($include) {
104: chomp($msg);
105: my ($msgtime,$msgnum)=split(/\_/,$id);
106: my ($sdom,$snum,$anon,$contrib)=split(/\:/,
107: &Apache::lonnet::unescape($msg));
108: $contrib=&Apache::lonnet::unescape($contrib);
1.18 albertel 109: &Apache::lonfeedback::newline_to_br(\$contrib);
1.11 albertel 110: ($contrib,my $errors)=&Apache::lontexconvert::msgtexconverted($contrib);
111: if ($errors) { $contrib.="[Message not fully displayed due to incorrect embedded TeX]"; }
1.17 albertel 112: if ($errors && $snum eq $env{'user.name'} &&
113: $sdom eq $env{'user.domain'} ) {
1.11 albertel 114: $contrib.="<br />[TeX error message: $errors]";
115: }
1.9 www 116: $contrib=~s/\n/ /g;
117: $contrib=~s/\'/\&\#39\;/g;
118: my $sender='';
119: if ($seeid) {
120: $sender=&Apache::loncommon::plainname($snum,$sdom);
121: my $nick=&Apache::loncommon::nickname($snum,$sdom);
122: if (($nick) && ($nick ne $sender)) {
123: $sender.=' '.$nick;
124: }
1.14 www 125: unless ($sender) { $sender=$snum.'@'.$sdom; }
1.9 www 126: if ($anon) { $sender.=' [Anon]' };
127: } elsif (!$anon) {
128: $sender=&Apache::loncommon::nickname($snum,$sdom);
1.14 www 129: unless ($sender) { $sender=$snum.'@'.$sdom; }
1.7 www 130: } else {
1.9 www 131: $sender=&Apache::loncommon::screenname($snum,$sdom);
132: unless ($sender) { $sender="Anonymous"; }
1.7 www 133: }
1.13 www 134: $sender=~s/\'/\&\#39\;/g;
1.9 www 135: my $color=$sender;
136: $color=~tr/a-j/0-9/;
137: $color=~tr/A-J/0-9/;
138: $color=~tr/k-t/0-9/;
139: $color=~tr/K-T/0-9/;
140: $color=~tr/u-z/0-5/;
141: $color=~tr/U-Z/0-5/;
142: $color=~s/\D//g;
143: $color=substr($color,0,6);
144: my $timestamp=localtime($msgtime);
145: my ($mhour,$mmin,$msec)=($timestamp=~/(\d\d)\:(\d\d)\:(\d\d)/);
146: $newstuff.='<font color="#'.$color.'"><a name="'.$id.'"><b>'.
147: $sender.'</b> ('.$mhour.':'.$mmin.':'.$msec.'): '.
148: $contrib."</font><br>";
149: $bottomid=$id;
150: } else {
151: $_=~/^(\w+)/;
1.17 albertel 152: if ($1 eq $env{'form.lastid'}) { $include=1; }
1.9 www 153: }
1.1 www 154: }
1.9 www 155: my $participant_output=join('<br />',sort @participants);
1.19 albertel 156: my $start_page =
157: &Apache::loncommon::start_page('Chat',undef,
158: {'redirect' => [5,"/adm/chatfetch?lastid=$lastid"],
159: 'only_body' => 1,});
160: my $end_page = &Apache::loncommon::end_page();
1.1 www 161: $r->print(<<ENDDOCUMENT);
1.19 albertel 162: $start_page
163: <script type="text/javascript">
1.1 www 164: parent.chatout.document.writeln('$newstuff');
1.3 www 165: parent.chatout.scroll(0,10000000);
1.1 www 166: </script>
1.9 www 167: $participant_output
1.19 albertel 168: $end_page
1.1 www 169: ENDDOCUMENT
170: return OK;
171: }
172:
173: 1;
174: __END__
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