loncom/interface/lonchatfetch.pm - view

File: [LON-CAPA] / loncom / interface / lonchatfetch.pm
Revision 1.12: download - view: text, annotated - select for diffs
Thu Jul 24 17:53:59 2003 UTC (20 years, 10 months ago) by matthew
Branches: MAIN
CVS tags: version_1_1_X, version_1_1_99_0, version_1_1_3, version_1_1_2, version_1_1_1, version_1_1_0, version_1_0_99_3, version_1_0_99_2, version_1_0_99_1, version_1_0_99, version_1_0_3, version_1_0_2, version_1_0_1, version_1_0_0, version_0_99_5, version_0_99_4, HEAD

Bug 679: Need to be able to disable chatroom.
   Added plc (permission for live chat).
   lonchat.pm and lonchatfetch.pm now both call &lonnet::allowed('plc',...)
   lonparmset.pm, loncreatecourse.pm, and course.initialization.helper
       now all allow setting $ENV{'course.'.$courseid.'.plc.roles.deny'}
       lonparmset.pm also allows the user to set
       $ENV{'course.'.$courseid.'.plc.users.deny'}
   lonmenu.pm was modified to allow us to require the user both be in
       a course AND have permissions.
   mydesk.tab, roles.tab, and rolesplain.tab were modified to include the
       new role.

1: # The LearningOnline Network 2: # Chat Fetching 3: # 4: # $Id: lonchatfetch.pm,v 1.12 2003/07/24 17:53:59 matthew 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 :http); 33: use Apache::lontexconvert; 34: use Apache::loncommon; 35: use Apache::lonnet; 36: 37: sub handler { 38: my $r = shift; 39: 40: if (! &Apache::lonnet::allowed('pch',$ENV{'request.course.id'}. 41: ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:'')) 42: ) { 43: return HTTP_NOT_ACCEPTABLE; 44: } 45: 46: my $loaderror=&Apache::lonnet::overloaderror($r); 47: if ($loaderror) { return $loaderror; } 48: $loaderror= 49: &Apache::lonnet::overloaderror($r, 50: $ENV{'course.'.$ENV{'request.course.id'}.'.home'}); 51: if ($loaderror) { return $loaderror; } 52: 53: $r->content_type('text/html'); 54: $r->send_http_header; 55: return OK if $r->header_only; 56: 57: # ------------------------------------------------------------ retrieve entries 58: 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.'.$ENV{'request.course.id'}.'.home'}; 62: 63: my @entries=split(/\:/, 64: &Apache::lonnet::reply( 65: "chatretr:$cdom:$cnum:$ENV{'user.domain'}:$ENV{'user.name'}",$chome)); 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: } 75: # ----------------------------------------------------------- Can see identity? 76: my $crs='/'.$ENV{'request.course.id'}; 77: if ($ENV{'request.course.sec'}) { 78: $crs.='_'.$ENV{'request.course.sec'}; 79: } 80: $crs=~s/\_/\//g; 81: my $seeid=&Apache::lonnet::allowed('rin',$crs); 82: # -------------------------------------------------------- see which ones apply 83: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['lastid']); 84: my $include=0; 85: my $newstuff=''; 86: my $bottomid=''; 87: unless ($ENV{'form.lastid'}) { 88: $include=1; 89: $newstuff='<html><body bgcolor="#FFFFFF">'; 90: } 91: my @participants=(); 92: foreach (@entries) { 93: my ($id,$msg,$udom)=split(/\:/,&Apache::lonnet::unescape($_)); 94: if ($id eq 'active_participant') { 95: chomp($udom); 96: $participants[$#participants+1]= 97: &Apache::loncommon::nickname($msg,$udom); 98: } elsif ($include) { 99: chomp($msg); 100: my ($msgtime,$msgnum)=split(/\_/,$id); 101: my ($sdom,$snum,$anon,$contrib)=split(/\:/, 102: &Apache::lonnet::unescape($msg)); 103: $contrib=&Apache::lonnet::unescape($contrib); 104: $contrib=~s/\n/\<br \/\>/g; 105: ($contrib,my $errors)=&Apache::lontexconvert::msgtexconverted($contrib); 106: if ($errors) { $contrib.="[Message not fully displayed due to incorrect embedded TeX]"; } 107: if ($errors && $snum eq $ENV{'user.name'} && 108: $sdom eq $ENV{'user.domain'} ) { 109: $contrib.="<br />[TeX error message: $errors]"; 110: } 111: $contrib=~s/\n/ /g; 112: $contrib=~s/\'/\&\#39\;/g; 113: my $sender=''; 114: if ($seeid) { 115: $sender=&Apache::loncommon::plainname($snum,$sdom); 116: my $nick=&Apache::loncommon::nickname($snum,$sdom); 117: if (($nick) && ($nick ne $sender)) { 118: $sender.=' '.$nick; 119: } 120: if ($anon) { $sender.=' [Anon]' }; 121: } elsif (!$anon) { 122: $sender=&Apache::loncommon::nickname($snum,$sdom); 123: } else { 124: $sender=&Apache::loncommon::screenname($snum,$sdom); 125: unless ($sender) { $sender="Anonymous"; } 126: } 127: $sender=~s/\'/\"/g; 128: my $color=$sender; 129: $color=~tr/a-j/0-9/; 130: $color=~tr/A-J/0-9/; 131: $color=~tr/k-t/0-9/; 132: $color=~tr/K-T/0-9/; 133: $color=~tr/u-z/0-5/; 134: $color=~tr/U-Z/0-5/; 135: $color=~s/\D//g; 136: $color=substr($color,0,6); 137: my $timestamp=localtime($msgtime); 138: my ($mhour,$mmin,$msec)=($timestamp=~/(\d\d)\:(\d\d)\:(\d\d)/); 139: $newstuff.='<font color="#'.$color.'"><a name="'.$id.'"><b>'. 140: $sender.'</b> ('.$mhour.':'.$mmin.':'.$msec.'): '. 141: $contrib."</font><br>"; 142: $bottomid=$id; 143: } else { 144: $_=~/^(\w+)/; 145: if ($1 eq $ENV{'form.lastid'}) { $include=1; } 146: } 147: } 148: my $participant_output=join('<br />',sort @participants); 149: $r->print(<<ENDDOCUMENT); 150: <html> 151: <head> 152: <title>The LearningOnline Network with CAPA</title> 153: <meta HTTP-EQUIV="Refresh" CONTENT="5; url=/adm/chatfetch?lastid=$lastid"> 154: </head> 155: <body bgcolor="#FFFFFF"> 156: <script> 157: parent.chatout.document.writeln('$newstuff'); 158: parent.chatout.scroll(0,10000000); 159: </script> 160: $participant_output 161: </body> 162: </html> 163: ENDDOCUMENT 164: return OK; 165: } 166: 167: 1; 168: __END__