version 1.3, 2000/05/29 14:08:18
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version 1.122, 2009/05/22 17:01:28
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# The LearningOnline Network |
# The LearningOnline Network |
# Login Screen |
# Login Screen |
# 5/21/99,5/22,5/25,5/26,5/31,6/2,6/10,7/12,7/14, |
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# 1/14/00,5/29 Gerd Kortemeyer |
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# |
# |
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# $Id$ |
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# |
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# Copyright Michigan State University Board of Trustees |
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# |
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# This file is part of the LearningOnline Network with CAPA (LON-CAPA). |
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# |
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# LON-CAPA is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 2 of the License, or |
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# (at your option) any later version. |
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# |
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# LON-CAPA is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with LON-CAPA; if not, write to the Free Software |
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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# |
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# /home/httpd/html/adm/gpl.txt |
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# |
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# http://www.lon-capa.org/ |
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# |
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package Apache::lonlogin; |
package Apache::lonlogin; |
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use strict; |
use strict; |
use Apache::Constants qw(:common); |
use Apache::Constants qw(:common); |
use Apache::File (); |
use Apache::File (); |
use Apache::lonnet(); |
use Apache::lonnet; |
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use Apache::loncommon(); |
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use Apache::lonauth(); |
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use Apache::lonlocal; |
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use Apache::migrateuser(); |
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use lib '/home/httpd/lib/perl/'; |
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use LONCAPA; |
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sub handler { |
sub handler { |
my $r = shift; |
my $r = shift; |
$r->content_type('text/html'); |
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&Apache::loncommon::get_unprocessed_cgi |
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(join('&',$ENV{'QUERY_STRING'},$env{'request.querystring'}, |
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$ENV{'REDIRECT_QUERY_STRING'}), |
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['interface','username','domain','firsturl','localpath','localres', |
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'token']); |
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if (!defined($env{'form.firsturl'})) { |
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&Apache::lonacc::get_posted_cgi($r,['firsturl']); |
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} |
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# -- check if they are a migrating user |
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if (defined($env{'form.token'})) { |
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return &Apache::migrateuser::handler($r); |
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} |
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&Apache::loncommon::no_cache($r); |
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&Apache::lonlocal::get_language_handle($r); |
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&Apache::loncommon::content_type($r,'text/html'); |
$r->send_http_header; |
$r->send_http_header; |
return OK if $r->header_only; |
return OK if $r->header_only; |
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my $iconpath= $r->dir_config('lonIconsURL'); |
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my $domain = $r->dir_config('lonDefDomain'); |
# Are we re-routing? |
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if (-e '/home/httpd/html/lon-status/reroute.txt') { |
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&Apache::lonauth::reroute($r); |
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return OK; |
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} |
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# -------------------------------- Prevent users from attempting to login twice |
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my $handle = &Apache::lonnet::check_for_valid_session($r); |
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if ($handle=~/^publicuser\_/) { |
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# For "public user" - remove it, we apparently really want to login |
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unlink($r->dir_config('lonIDsDir')."/$handle.id"); |
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} elsif ($handle ne '') { |
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# Indeed, a valid token is found |
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my $start_page = |
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&Apache::loncommon::start_page('Already logged in'); |
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my $end_page = |
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&Apache::loncommon::end_page(); |
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$r->print( |
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$start_page |
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.'<h1>'.&mt('You are already logged in!').'</h1>' |
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.'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].', |
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'<a href="/adm/roles">','</a>','<a href="/adm/logout">','</a>').'</p>' |
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.'<p><a href="/adm/loginproblems.html">'.&mt('Login problems?').'</a></p>' |
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.$end_page |
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); |
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return OK; |
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} |
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# ---------------------------------------------------- No valid token, continue |
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# ---------------------------- Not possible to really login to domain "public" |
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if ($env{'form.domain'} eq 'public') { |
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$env{'form.domain'}=''; |
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$env{'form.username'}=''; |
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} |
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# ----------------------------------------------------------- Process Interface |
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$env{'form.interface'}=~s/\W//g; |
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my $httpbrowser=$ENV{"HTTP_USER_AGENT"}; |
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my $iconpath= |
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&Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL')); |
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my $domain = &Apache::lonnet::default_login_domain(); |
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if (($env{'form.domain'}) && |
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(&Apache::lonnet::domain($env{'form.domain'},'description'))) { |
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$domain=$env{'form.domain'}; |
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} |
my $role = $r->dir_config('lonRole'); |
my $role = $r->dir_config('lonRole'); |
my $loadlim = $r->dir_config('lonLoadLim'); |
my $loadlim = $r->dir_config('lonLoadLim'); |
my $servadm = $r->dir_config('lonAdmEMail'); |
my $servadm = $r->dir_config('lonAdmEMail'); |
my $sysadm = $r->dir_config('lonSysEMail'); |
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my $lonhost = $r->dir_config('lonHostID'); |
my $lonhost = $r->dir_config('lonHostID'); |
my $tabdir = $r->dir_config('lonTabDir'); |
my $tabdir = $r->dir_config('lonTabDir'); |
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my $include = $r->dir_config('lonIncludes'); |
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my $expire = $r->dir_config('lonExpire'); |
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my $version = $r->dir_config('lonVersion'); |
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my $host_name = &Apache::lonnet::hostname($lonhost); |
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# --------------------------------------------- Default values for login fields |
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my $authusername=($env{'form.username'}?$env{'form.username'}:''); |
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my $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain); |
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# ---------------------------------------------------------- Determine own load |
my $loadavg; |
my $loadavg; |
{ |
{ |
my $loadfile=Apache::File->new('/proc/loadavg'); |
my $loadfile=Apache::File->new('/proc/loadavg'); |
$loadavg=<$loadfile>; |
$loadavg=<$loadfile>; |
} |
} |
$loadavg =~ s/\s.*//g; |
$loadavg =~ s/\s.*//g; |
my $loadpercent=100*$loadavg/$loadlim; |
my $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim); |
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my $userloadpercent=&Apache::lonnet::userload(); |
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# ------------------------------------------------------- Do the load balancing |
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my $otherserver= &Apache::lonnet::absolute_url($host_name); |
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my $firsturl= |
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($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'}); |
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# ---------------------------------------------------------- Are we overloaded? |
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if ((($userloadpercent>100.0)||($loadpercent>100.0))) { |
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my $unloaded=Apache::lonnet::spareserver($loadpercent,$userloadpercent); |
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if ($unloaded) { $otherserver=$unloaded; } |
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} |
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# ----------------------------------------------------------- Get announcements |
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my $announcements=&Apache::lonnet::getannounce(); |
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# -------------------------------------------------------- Set login parameters |
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my @hexstr=('0','1','2','3','4','5','6','7', |
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'8','9','a','b','c','d','e','f'); |
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my $lkey=''; |
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for (0..7) { |
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$lkey.=$hexstr[rand(15)]; |
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} |
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my $ukey=''; |
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for (0..7) { |
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$ukey.=$hexstr[rand(15)]; |
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} |
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my $lextkey=hex($lkey); |
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if ($lextkey>2147483647) { $lextkey-=4294967296; } |
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my $uextkey=hex($ukey); |
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if ($uextkey>2147483647) { $uextkey-=4294967296; } |
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# -------------------------------------------------------- Store away log token |
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my $logtoken=Apache::lonnet::reply( |
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'tmpput:'.$ukey.$lkey.'&'.$firsturl, |
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$lonhost); |
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my $otherserver=''; |
# ------------------- If we cannot talk to ourselves, we are in serious trouble |
# ---------------------------------------- Are we access server and overloaded? |
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if (($role eq 'access') && ($loadpercent>100.0)) { |
if ($logtoken eq 'con_lost') { |
$otherserver=Apache::lonnet::spareserver(); |
my $spares=''; |
} |
my $last; |
# ---------------------------------------------------------- Print login screen |
foreach my $hostid (sort |
$r->print(<<ENDDOCUMENT); |
{ |
<html> |
&Apache::lonnet::hostname($a) cmp |
<head> |
&Apache::lonnet::hostname($b); |
<title>The LearningOnline Network with CAPA Login</title> |
} |
</head> |
keys(%Apache::lonnet::spareid)) { |
<body bgcolor="#FFFFFF"> |
next if ($hostid eq $lonhost); |
<table width=600> |
my $hostname = &Apache::lonnet::hostname($hostid); |
<tr><td><img src="$iconpath/lonlogo.gif"></td> |
next if ($last eq $hostname); |
<td bgcolor="#DDDDDD"> |
$spares.='<br /><font size="+1"><a href="http://'. |
<font size=+1><b>User Authentication</b></font><p> |
$hostname. |
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'/adm/login?domain='.$authdomain.'">'. |
<form action="$otherserver/adm/authenticate" method="post" target="_top"> |
$hostname.'</a>'. |
<table border=2 bgcolor="#BBBBBB"> |
' '.&mt('(preferred)').'</font>'.$/; |
<tr><td>Username:</td><td><input type=text size=10 name=uname></td></tr> |
$last=$hostname; |
<tr><td>Password:</td><td><input type=password size=10 name=upass></td></tr> |
} |
<tr><td>Domain:</td><td><input type=text size=10 value=$domain name=udom></td> |
$spares.= '<br />'; |
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my %all_hostnames = &Apache::lonnet::all_hostnames(); |
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foreach my $hostid (sort |
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{ |
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&Apache::lonnet::hostname($a) cmp |
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&Apache::lonnet::hostname($b); |
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} |
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keys(%all_hostnames)) { |
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next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid}); |
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my $hostname = &Apache::lonnet::hostname($hostid); |
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next if ($last eq $hostname); |
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$spares.='<br /><a href="http://'. |
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$hostname. |
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'/adm/login?domain='.$authdomain.'">'. |
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$hostname.'</a>'; |
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$last=$hostname; |
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} |
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$r->print( |
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'<html>' |
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.'<head><title>' |
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.&mt('The LearningOnline Network with CAPA') |
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.'</title></head>' |
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.'<body bgcolor="#FFFFFF">' |
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.'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>' |
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.'<img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />' |
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.'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>' |
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.'<p>'.&mt('Please attempt to login to one of the following servers:').'</p>' |
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.$spares |
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.'</body>' |
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.'</html>' |
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); |
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return OK; |
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} |
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# ----------------------------------------------- Apparently we are in business |
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$servadm=~s/\,/\<br \/\>/g; |
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# ----------------------------------------------------------- Front page design |
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my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain); |
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my $font=&Apache::loncommon::designparm('login.font',$domain); |
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my $link=&Apache::loncommon::designparm('login.link',$domain); |
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my $vlink=&Apache::loncommon::designparm('login.vlink',$domain); |
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my $alink=&Apache::loncommon::designparm('login.alink',$domain); |
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my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain); |
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my $logo=&Apache::loncommon::designparm('login.logo',$domain); |
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my $img=&Apache::loncommon::designparm('login.img',$domain); |
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my $domainlogo=&Apache::loncommon::domainlogo($domain); |
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my $login=&Apache::loncommon::designparm('login.login',$domain); |
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if ($login eq '') { |
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$login = $iconpath.'/'.&mt('userauthentication.gif'); |
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} |
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my $showbanner = 1; |
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my $showmainlogo = 1; |
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if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) { |
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$showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain); |
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} |
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if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) { |
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$showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain); |
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} |
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my $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain); |
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my $showcoursecat = |
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&Apache::loncommon::designparm('login.coursecatalog',$domain); |
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my $loginheader =&Apache::loncommon::designparm('login.loginheader',$domain); |
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my $shownewuserlink = |
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&Apache::loncommon::designparm('login.newuser',$domain); |
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my $now=time; |
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my $js = (<<ENDSCRIPT); |
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<script type="text/javascript" language="JavaScript"> |
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// <![CDATA[ |
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function send() |
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{ |
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this.document.server.elements.uname.value |
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=this.document.client.elements.uname.value; |
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this.document.server.elements.udom.value |
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=this.document.client.elements.udom.value; |
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uextkey=this.document.client.elements.uextkey.value; |
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lextkey=this.document.client.elements.lextkey.value; |
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initkeys(); |
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this.document.server.elements.upass0.value |
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=crypted(this.document.client.elements.upass$now.value.substr(0,15)); |
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this.document.server.elements.upass1.value |
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=crypted(this.document.client.elements.upass$now.value.substr(15,15)); |
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this.document.server.elements.upass2.value |
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=crypted(this.document.client.elements.upass$now.value.substr(30,15)); |
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this.document.client.elements.uname.value=''; |
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this.document.client.elements.upass$now.value=''; |
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this.document.server.submit(); |
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return false; |
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} |
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// ]]> |
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</script> |
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ENDSCRIPT |
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# --------------------------------------------------- Print login screen header |
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my %add_entries = ( |
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bgcolor => "$mainbg", |
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text => "$font", |
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link => "$link", |
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vlink => "$vlink", |
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alink => "$alink",); |
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$r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js, |
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{ 'redirect' => [$expire,'/adm/roles'], |
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'add_entries' => \%add_entries, |
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'only_body' => 1,})); |
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# ----------------------------------------------------------------------- Texts |
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my %lt=&Apache::lonlocal::texthash( |
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'un' => 'Username', |
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'pw' => 'Password', |
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'dom' => 'Domain', |
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'perc' => 'percent', |
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'load' => 'Server Load', |
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'userload' => 'User Load', |
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'catalog' => 'Course Catalog', |
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'log' => 'Log in', |
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'help' => 'Log-in Help', |
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'serv' => 'Server', |
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'servadm' => 'Server Administration', |
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'helpdesk' => 'Contact Helpdesk', |
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'forgotpw' => 'Forgot password?', |
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'newuser' => 'New User?', |
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); |
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# -------------------------------------------------- Change password field name |
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my $forgotpw = &forgotpwdisplay(%lt); |
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my $loginhelp = &loginhelpdisplay(%lt); |
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# ---------------------------------------------------- Serve out DES JavaScript |
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{ |
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my $jsh=Apache::File->new($include."/londes.js"); |
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$r->print(<$jsh>); |
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} |
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# ---------------------------------------------------------- Serve rest of page |
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$r->print( |
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'<div class="LC_loginpage_container">'); |
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# |
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# If the loadbalancing yielded just http:// because perhaps there's no loadbalancing? |
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# then just us a relative link to authenticate: |
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# |
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$r->print(<<ENDSERVERFORM); |
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<form name="server" action="$otherserver/adm/authenticate" method="post" target="_top"> |
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<input type="hidden" name="logtoken" value="$logtoken" /> |
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<input type="hidden" name="serverid" value="$lonhost" /> |
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<input type="hidden" name="uname" value="" /> |
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<input type="hidden" name="upass0" value="" /> |
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<input type="hidden" name="upass1" value="" /> |
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<input type="hidden" name="upass2" value="" /> |
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<input type="hidden" name="udom" value="" /> |
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<input type="hidden" name="localpath" value="$env{'form.localpath'}" /> |
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<input type="hidden" name="localres" value="$env{'form.localres'}" /> |
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</form> |
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ENDSERVERFORM |
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my $coursecatalog; |
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if (($showcoursecat eq '') || ($showcoursecat)) { |
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$coursecatalog = &coursecatalog_link($lt{'catalog'}); |
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} |
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my $newuserlink; |
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if ($shownewuserlink) { |
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$newuserlink = &newuser_link($lt{'newuser'}).'<br />'; |
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} |
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my $logintitle; |
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if ($loginheader eq 'text') { |
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$logintitle ='<h2>'.$lt{'log'}.'</h2>'; |
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} else { |
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$logintitle = '<img src="'.$login.'" alt="'. |
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&mt('User Authentication').'" />'; |
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} |
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my $noscript_warning='<noscript><span class="LC_warning"><b>' |
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.&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.') |
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.'</b></span></noscript>'; |
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my $helpdeskscript; |
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my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail, |
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$version,$authdomain,\$helpdeskscript); |
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my $loginform=(<<LFORM); |
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<form name="client" action="" onsubmit="return(send())"> |
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<input type="hidden" name="lextkey" value="$lextkey" /> |
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<input type="hidden" name="uextkey" value="$uextkey" /> |
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<b><label for="uname">$lt{'un'}</label>:</b><br /> |
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<input type="text" name="uname" size="15" value="$authusername" /><br /> |
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<b><label for="upass$now">$lt{'pw'}</label>:</b><br /> |
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<input type="password" name="upass$now" size="15" /><br /> |
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<b><label for="udom">$lt{'dom'}</label>:</b><br /> |
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<input type="text" name="udom" size="15" value="$authdomain" /><br /> |
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<input type="submit" value="$lt{'log'}" /> |
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</form> |
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LFORM |
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if ($showbanner) { |
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$r->print(<<HEADER); |
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<!-- The LON-CAPA Header --> |
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<table border="0" align="left" width="100%" cellspacing="0" cellpadding="1"> |
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<tr> |
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<td align="left" valign="top" bgcolor="$pgbg"> |
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<img src="$img" border="0" alt="The Learning Online Network with CAPA" /> |
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</td> |
</tr> |
</tr> |
<tr><td colspan=2><input type=submit value=Login></td></tr> |
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</table> |
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</form> |
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</td> |
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</tr><tr><td bgcolor="#DDDDDD"> |
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<table border=1 bgcolor="#BBBBBB"> |
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<tr><td><font size="-1"><b>Domain:</b></font></td> |
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<td><font size="-1"><tt>$domain</tt></font></td> |
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<td rowspan=3><font size="-1"><b>LON System Administration:</b><br> |
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<tt>$sysadm</tt><br> |
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<b>Server Administration:</b><br> |
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<tt>$servadm</tt></font></td></tr> |
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<tr><td><font size="-1"><b>Server:</b></font></td> |
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<td><font size="-1"><tt>$lonhost ($role)</tt></font></td></tr> |
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<tr><td><font size="-1"><b>Load:</b></font></td> |
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<td><font size="-1"><tt>$loadpercent</tt> percent</font></td></tr> |
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</table> |
</table> |
</td><td> |
HEADER |
<table align=right><tr><td><font size="+1"> |
} |
<b>L</b>aboratory for<br> |
$r->print(<<ENDTOP); |
<b>I</b>nstructional<br> |
<div class="LC_loginpage_space"> </div> |
<b>T</b>echnology in<br> |
<div class="LC_loginpage_floatLeft"> |
<b>E</b>ducation</td><td> |
<div class="LC_loginpage_loginContainer"> |
<img src="$iconpath/liteani.gif"></font></td></tr></table></tr></table> |
$logintitle |
</body> |
<table border="0" align="left" cellspacing="1" cellpadding="2" width="100%"> |
</html> |
<tr> |
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<td> |
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$loginform |
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</td> |
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</tr> |
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</table> |
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$noscript_warning |
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</div> |
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|
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<div class="LC_loginpage_loginInfo"> |
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$loginhelp<br /> |
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$forgotpw<br /> |
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$contactblock<br /> |
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$newuserlink |
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$coursecatalog |
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</div> |
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</div> |
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ENDTOP |
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if ($showmainlogo) { |
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$r->print(' <img src="'.$logo.'" alt="" />'."\n"); |
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} |
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$r->print(<<ENDTOP); |
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$announcements |
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$domainlogo |
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<div class="LC_loginpage_space"> </div> |
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ENDTOP |
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|
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$r->print(<<ENDDOCUMENT); |
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<table border="0" cellspacing="0" cellpadding="0"> |
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<tr> |
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<td align="left" valign="top"> |
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<small><b> $lt{'dom'}: </b></small> |
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</td> |
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<td align="left" valign="top"> |
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<small><tt> $domain</tt></small> |
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</td> |
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</tr> |
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<tr> |
|
<td align="left" valign="top"> |
|
<small><b> $lt{'serv'}: </b></small> |
|
</td> |
|
<td align="left" valign="top"> |
|
<small><tt> $lonhost ($role)</tt></small> |
|
</td> |
|
</tr> |
|
<tr> |
|
<td align="left" valign="top"> |
|
<small><b> $lt{'load'}: </b></small> |
|
</td> |
|
<td align="left" valign="top"> |
|
<small><tt> $loadpercent $lt{'perc'}</tt></small> |
|
</td> |
|
</tr> |
|
<tr> |
|
<td align="left" valign="top"> |
|
<small><b> $lt{'userload'}: </b></small> |
|
</td> |
|
<td align="left" valign="top"> |
|
<small><tt> $userloadpercent $lt{'perc'}</tt></small> |
|
</td> |
|
</tr> |
|
</table> |
|
</div> |
|
|
|
<script type="text/javascript"> |
|
// <![CDATA[ |
|
// the if prevents the script error if the browser can not handle this |
|
if ( document.client.uname ) { document.client.uname.focus(); } |
|
// ]]> |
|
</script> |
|
$helpdeskscript |
|
|
ENDDOCUMENT |
ENDDOCUMENT |
|
my %endargs = ( 'noredirectlink' => 1, ); |
|
$r->print(&Apache::loncommon::end_page(\%endargs)); |
return OK; |
return OK; |
} |
} |
|
|
|
sub contactdisplay { |
|
my ($lt,$servadm,$showadminmail,$version,$authdomain,$helpdeskscript) = @_; |
|
my $contactblock; |
|
my $showhelpdesk = 0; |
|
my $requestmail = $Apache::lonnet::perlvar{'lonSupportEMail'}; |
|
if ($requestmail =~ m/^[^\@]+\@[^\@]+$/) { |
|
$showhelpdesk = 1; |
|
} |
|
if ($servadm && $showadminmail) { |
|
$contactblock .= '<b> '.$$lt{'servadm'}.':</b><br />'. |
|
'<tt> '.$servadm.'</tt><br /> <br />'; |
|
} |
|
if ($showhelpdesk) { |
|
$contactblock .= '<a href="javascript:helpdesk()">'.$lt->{'helpdesk'}.'</a><br />'; |
|
my $thisurl = &escape('/adm/login'); |
|
$$helpdeskscript = <<"ENDSCRIPT"; |
|
<script type="text/javascript"> |
|
// <![CDATA[ |
|
function helpdesk() { |
|
var codedom = document.client.udom.value; |
|
if (codedom == '') { |
|
codedom = "$authdomain"; |
|
} |
|
var querystr = "origurl=$thisurl&codedom="+codedom; |
|
document.location.href = "/adm/helpdesk?"+querystr; |
|
return; |
|
} |
|
// ]]> |
|
</script> |
|
ENDSCRIPT |
|
} |
|
$contactblock .= <<"ENDBLOCK"; |
|
$version |
|
ENDBLOCK |
|
return $contactblock; |
|
} |
|
|
|
sub forgotpwdisplay { |
|
my (%lt) = @_; |
|
my $prompt_for_resetpw = 1; |
|
if ($prompt_for_resetpw) { |
|
return '<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a>'; |
|
} |
|
return; |
|
} |
|
|
|
sub loginhelpdisplay { |
|
my (%lt) = @_; |
|
my $login_help = 1; |
|
if ($login_help) { |
|
return '<a href="/adm/loginproblems.html">'.$lt{'help'}.'</a>'; |
|
} |
|
return; |
|
} |
|
|
|
sub coursecatalog_link { |
|
my ($linkname) = @_; |
|
return <<"END"; |
|
<a href="/adm/coursecatalog">$linkname</a> |
|
END |
|
} |
|
|
|
sub newuser_link { |
|
my ($linkname) = @_; |
|
return ' <a href="/adm/createaccount"><b>'.$linkname.'</b></a><br />'; |
|
} |
|
|
1; |
1; |
__END__ |
__END__ |