The LearningOnline Network with CAPA Login

# The LearningOnline Network # Login Screen # # $Id: lonlogin.pm,v 1.29 2003/01/31 21:51:36 www Exp $ # # Copyright Michigan State University Board of Trustees # # This file is part of the LearningOnline Network with CAPA (LON-CAPA). # # LON-CAPA is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # LON-CAPA is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with LON-CAPA; if not, write to the Free Software # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA # # /home/httpd/html/adm/gpl.txt # # http://www.lon-capa.org/ # # 5/21/99,5/22,5/25,5/26,5/31,6/2,6/10,7/12,7/14, # 1/14/00,5/29,5/30,6/1,6/29,7/1,11/9, # 1/17/01 Gerd Kortemeyer # # 2/7/02,2/8,2/12,2/14,2/15,2/19 Josh Brunskole # # 7/10/02 Jeremy Bowers package Apache::lonlogin; use strict; use Apache::Constants qw(:common); use Apache::File (); use Apache::lonnet(); use Apache::loncommon(); sub handler { my $r = shift; $r->content_type('text/html'); &Apache::loncommon::no_cache($r); $r->send_http_header; return OK if $r->header_only; &Apache::loncommon::get_unprocessed_cgi ($ENV{'QUERY_STRING'},['interface']); $ENV{'form.interface'}=~s/\W//g; my $fullgraph=($ENV{'form.interface'} ne 'textual'); my $iconpath= 'http://'.$ENV{'HTTP_HOST'}.':8080'. $r->dir_config('lonIconsURL'); my $domain = $r->dir_config('lonDefDomain'); my $role = $r->dir_config('lonRole'); my $loadlim = $r->dir_config('lonLoadLim'); my $servadm = $r->dir_config('lonAdmEMail'); my $sysadm = $r->dir_config('lonSysEMail'); my $lonhost = $r->dir_config('lonHostID'); my $tabdir = $r->dir_config('lonTabDir'); my $include = $r->dir_config('lonIncludes'); my $loadavg; { my $loadfile=Apache::File->new('/proc/loadavg'); $loadavg=<$loadfile>; } $loadavg =~ s/\s.*//g; my $loadpercent=100*$loadavg/$loadlim; my $otherserver='http://'.$ENV{'SERVER_NAME'}; my $firsturl=$ENV{'request.firsturl'}; # ---------------------------------------- Are we access server and overloaded? if (($role eq 'access') && ($loadpercent>100.0)) { $otherserver=Apache::lonnet::spareserver($loadpercent); } # -------------------------------------------------------- Set login parameters my @hexstr=('0','1','2','3','4','5','6','7', '8','9','a','b','c','d','e','f'); my $lkey=''; for (0..7) { $lkey.=$hexstr[rand(15)]; } my $ukey=''; for (0..7) { $ukey.=$hexstr[rand(15)]; } my $lextkey=hex($lkey); if ($lextkey>2147483647) { $lextkey-=4294967296; } my $uextkey=hex($ukey); if ($uextkey>2147483647) { $uextkey-=4294967296; } my $logtoken=Apache::lonnet::reply( 'tmpput:'.$ukey.$lkey.'&'.$firsturl, $lonhost); my $domainlogo=&Apache::loncommon::domainlogo(); # --------------------------------------------------- Print login screen header $r->print(< The LearningOnline Network with CAPA Login ENDHEADER # ---------------------------------------------------- Serve out DES JavaScript { my $jsh=Apache::File->new($include."/londes.js"); $r->print(<$jsh>); } # ----------------------------------------------------------- Front page design my $pgbg=&Apache::loncommon::designparm('login.pgbg'); my $font=&Apache::loncommon::designparm('login.font'); my $link=&Apache::loncommon::designparm('login.link'); my $vlink=&Apache::loncommon::designparm('login.vlink'); my $alink=&Apache::loncommon::designparm('login.alink'); my $mainbg=&Apache::loncommon::designparm('login.mainbg'); my $sidebg=&Apache::loncommon::designparm('login.sidebg'); my $logo=&Apache::loncommon::designparm('login.logo'); my $img=&Apache::loncommon::designparm('login.img'); # ---------------------------------------------------------- Serve rest of page $r->print(< ENDSCRIPT if ($fullgraph) { $r->print( ''); } $r->print(< ENDSERVERFORM if ($fullgraph) { $r->print(<