loncom/interface/lonchatfetch.pm - view

File: [LON-CAPA] / loncom / interface / lonchatfetch.pm
Revision 1.6: download - view: text, annotated - select for diffs
Mon Sep 16 20:15:10 2002 UTC (21 years, 9 months ago) by www
Branches: MAIN
CVS tags: version_0_6_2, version_0_6, HEAD

Overload protection - frivolous to generate all of these hits if machine
overloaded.

1: # The LearningOnline Network 2: # Chat Fetching 3: # 4: # $Id: lonchatfetch.pm,v 1.6 2002/09/16 20:15:10 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.'.$ENV{'request.course.id'}.'.home'}; 56: 57: my @entries=split(/\:/, 58: &Apache::lonnet::reply("chatretr:$cdom:$cnum",$chome)); 59: my ($lastid)=($entries[$#entries]=~/^(\w+)/); 60: my ($thentime,$idnum)=split(/\_/,$lastid); 61: # ----------------------------------------------------------- Can see identity? 62: my $crs='/'.$ENV{'request.course.id'}; 63: if ($ENV{'request.course.sec'}) { 64: $crs.='_'.$ENV{'request.course.sec'}; 65: } 66: $crs=~s/\_/\//g; 67: my $seeid=&Apache::lonnet::allowed('rin',$crs); 68: # -------------------------------------------------------- see which ones apply 69: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['lastid']); 70: my $include=0; 71: my $newstuff=''; 72: my $bottomid=''; 73: unless ($ENV{'form.lastid'}) { 74: $include=1; 75: $newstuff='<html><body bgcolor="#FFFFFF">'; 76: } 77: foreach (@entries) { 78: if ($include) { 79: my ($id,$msg)=split(/\:/,&Apache::lonnet::unescape($_)); 80: chomp($msg); 81: my ($msgtime,$msgnum)=split(/\_/,$id); 82: my ($sdom,$snum,$anon,$contrib)=split(/\:/, 83: &Apache::lonnet::unescape($msg)); 84: $contrib=&Apache::lonnet::unescape($contrib); 85: $contrib=~s/\n/\<br \/\>/g; 86: $contrib=&Apache::lontexconvert::msgtexconverted($contrib); 87: $contrib=~s/\n/ /g; 88: $contrib=~s/\'/\&\#39\;/g; 89: my $sender=''; 90: if ($seeid) { 91: $sender=&Apache::loncommon::plainname($snum,$sdom); 92: my $nick=&Apache::loncommon::nickname($snum,$sdom); 93: if (($nick) && ($nick ne $sender)) { 94: $sender.=' '.$nick; 95: } 96: if ($anon) { $sender.=' [Anon]' }; 97: } elsif (!$anon) { 98: $sender=&Apache::loncommon::nickname($snum,$sdom); 99: } else { 100: $sender=&Apache::loncommon::screenname($snum,$sdom); 101: unless ($sender) { $sender="Anonymous"; } 102: } 103: $sender=~s/\'/\"/g; 104: my $color=$sender; 105: $color=~tr/a-j/0-9/; 106: $color=~tr/A-J/0-9/; 107: $color=~tr/k-t/0-9/; 108: $color=~tr/K-T/0-9/; 109: $color=~tr/u-z/0-5/; 110: $color=~tr/U-Z/0-5/; 111: $color=~s/\D//g; 112: $color=substr($color,0,6); 113: my $timestamp=localtime($msgtime); 114: my ($mhour,$mmin,$msec)=($timestamp=~/(\d\d)\:(\d\d)\:(\d\d)/); 115: $newstuff.='<font color="#'.$color.'"><a name="'.$id.'"><b>'. 116: $sender.'</b> ('.$mhour.':'.$mmin.':'.$msec.'): '. 117: $contrib."</font><br>"; 118: $bottomid=$id; 119: } else { 120: $_=~/^(\w+)/; 121: if ($1 eq $ENV{'form.lastid'}) { $include=1; } 122: } 123: } 124: $r->print(<<ENDDOCUMENT); 125: <html> 126: <head> 127: <title>The LearningOnline Network with CAPA</title> 128: <meta HTTP-EQUIV="Refresh" CONTENT="5; url=/adm/chatfetch?lastid=$lastid"> 129: </head> 130: <body bgcolor="#FFFFFF"> 131: <script> 132: parent.chatout.document.writeln('$newstuff'); 133: parent.chatout.scroll(0,10000000); 134: </script> 135: </body> 136: </html> 137: ENDDOCUMENT 138: return OK; 139: } 140: 141: 1; 142: __END__