# The LearningOnline Network
# Login Screen
#
# $Id: lonlogin.pm,v 1.208 2024/09/18 15:11:31 raeburn 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/
#
package Apache::lonlogin;
use strict;
use Apache::Constants qw(:common);
use Apache::File ();
use Apache::lonnet;
use Apache::loncommon();
use Apache::lonauth();
use Apache::lonlocal;
use Apache::migrateuser();
use lib '/home/httpd/lib/perl/';
use LONCAPA qw(:DEFAULT :match);
use URI::Escape;
use HTML::Entities();
use CGI::Cookie();
sub handler {
my $r = shift;
&Apache::loncommon::get_unprocessed_cgi
(join('&',$ENV{'QUERY_STRING'},$env{'request.querystring'},
$ENV{'REDIRECT_QUERY_STRING'}),
['interface','username','domain','firsturl','localpath','localres',
'token','role','symb','iptoken','btoken','ltoken','ttoken','linkkey',
'saml','sso','retry','display']);
# -- check if they are a migrating user
if (defined($env{'form.token'})) {
return &Apache::migrateuser::handler($r);
}
my $lonhost = $r->dir_config('lonHostID');
if ($env{'form.ttoken'}) {
my %info = &Apache::lonnet::tmpget($env{'form.ttoken'});
&Apache::lonnet::tmpdel($env{'form.ttoken'});
if ($info{'origurl'}) {
$env{'form.firsturl'} = $info{'origurl'};
}
if ($info{'ltoken'}) {
$env{'form.ltoken'} = $info{'ltoken'};
} elsif ($info{'linkprot'}) {
$env{'form.linkprot'} = $info{'linkprot'};
foreach my $item ('linkprotuser','linkprotexit','linkprotpbid','linkprotpburl') {
if ($info{$item} ne '') {
$env{'form.'.$item} = $info{$item};
}
}
} elsif ($info{'linkkey'} ne '') {
$env{'form.linkkey'} = $info{'linkkey'};
}
} elsif (($env{'form.sso'}) || ($env{'form.retry'})) {
my $infotoken;
if ($env{'form.sso'}) {
$infotoken = $env{'form.sso'};
} else {
$infotoken = $env{'form.retry'};
}
my $data = &Apache::lonnet::reply('tmpget:'.$infotoken,$lonhost);
unless (($data=~/^error/) || ($data eq 'con_lost') ||
($data eq 'no_such_host')) {
my %info = &decode_token($data);
foreach my $item (keys(%info)) {
$env{'form.'.$item} = $info{$item};
}
&Apache::lonnet::tmpdel($infotoken);
}
} else {
if (!defined($env{'form.firsturl'})) {
&Apache::lonacc::get_posted_cgi($r,['firsturl']);
}
if (!defined($env{'form.firsturl'})) {
if ($ENV{'REDIRECT_URL'} =~ m{^/+tiny/+$LONCAPA::match_domain/+\w+$}) {
$env{'form.firsturl'} = $ENV{'REDIRECT_URL'};
}
}
if (($env{'form.firsturl'} =~ m{^/+tiny/+$LONCAPA::match_domain/+\w+$}) &&
(!$env{'form.ltoken'}) && (!$env{'form.linkprot'}) && (!$env{'form.linkkey'})) {
&Apache::lonacc::get_posted_cgi($r,['linkkey']);
}
if ($env{'form.firsturl'} eq '/adm/logout') {
delete($env{'form.firsturl'});
}
}
# For "public user" - remove any exising "public" cookie, as user really wants to log-in
my ($handle,$lonidsdir,$expirepub,$userdom);
$lonidsdir=$r->dir_config('lonIDsDir');
unless ($r->header_only) {
$handle = &Apache::lonnet::check_for_valid_session($r,'lonID',undef,\$userdom);
if ($handle ne '') {
if ($handle=~/^publicuser\_/) {
unlink($r->dir_config('lonIDsDir')."/$handle.id");
undef($handle);
undef($userdom);
$expirepub = 1;
}
}
}
&Apache::loncommon::no_cache($r);
&Apache::lonlocal::get_language_handle($r);
&Apache::loncommon::content_type($r,'text/html');
if ($expirepub) {
my $c = new CGI::Cookie(-name => 'lonPubID',
-value => '',
-expires => '-10y',);
$r->header_out('Set-cookie' => $c);
} elsif (($handle eq '') && ($userdom ne '')) {
my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
foreach my $name (keys(%cookies)) {
next unless ($name =~ /^lon(|S|Link|Pub)ID$/);
my $c = new CGI::Cookie(-name => $name,
-value => '',
-expires => '-10y',);
$r->headers_out->add('Set-cookie' => $c);
}
}
$r->send_http_header;
return OK if $r->header_only;
# Are we re-routing?
my $londocroot = $r->dir_config('lonDocRoot');
if (-e "$londocroot/lon-status/reroute.txt") {
&Apache::lonauth::reroute($r);
return OK;
}
# Check if browser sent a LON-CAPA load balancer cookie (and this is a balancer)
my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r,1);
if ($found_server) {
my $hostname = &Apache::lonnet::hostname($found_server);
if ($hostname ne '') {
my $protocol = $Apache::lonnet::protocol{$found_server};
$protocol = 'http' if ($protocol ne 'https');
my $dest = '/adm/roles';
if ($env{'form.firsturl'} ne '') {
$dest = &HTML::Entities::encode($env{'form.firsturl'},'\'"<>&');
}
my %info = (
balcookie => $lonhost.':'.$balancer_cookie,
);
if ($env{'form.role'}) {
$info{'role'} = $env{'form.role'};
}
if ($env{'form.symb'}) {
$info{'symb'} = $env{'form.symb'};
}
if (($env{'form.firsturl'} eq '/adm/email') && ($env{'form.display'} ne '')) {
if ($env{'form.sso'}) {
if ($env{'form.mailrecip'}) {
$info{'display'} = &escape($env{'form.display'});
$info{'mailrecip'} = &escape($env{'form.mailrecip'});
}
} else {
if (($env{'form.username'}) && ($env{'form.domain'})) {
$info{'display'} = &escape($env{'form.display'});
$info{'mailrecip'} = &escape($env{'form.username'}.':'.$env{'form.domain'});
}
}
}
my $balancer_token = &Apache::lonnet::tmpput(\%info,$found_server);
unless (($balancer_token eq 'con_lost') || ($balancer_token eq 'refused') ||
($balancer_token eq 'unknown_cmd') || ($balancer_token eq 'no_such_host')) {
$dest .= (($dest=~/\?/)?'&':'?') . 'btoken='.$balancer_token;
}
if ($env{'form.firsturl'} =~ m{^/tiny/$match_domain/\w+$}) {
my %link_info;
if ($env{'form.ltoken'}) {
$link_info{'ltoken'} = $env{'form.ltoken'};
} elsif ($env{'form.linkprot'}) {
$link_info{'linkprot'} = $env{'form.linkprot'};
foreach my $item ('linkprotuser','linkprotexit','linkprotpbid','linkprotpburl') {
if ($env{'form.'.$item} ne '') {
$link_info{$item} = $env{'form.'.$item};
}
}
} elsif ($env{'form.linkkey'} ne '') {
$link_info{'linkkey'} = $env{'form.linkkey'};
}
if (keys(%link_info)) {
$link_info{'origurl'} = $env{'form.firsturl'};
my $token = &Apache::lonnet::tmpput(\%link_info,$found_server,'link');
unless (($token eq 'con_lost') || ($token eq 'refused') ||
($token eq 'unknown_cmd') || ($token eq 'no_such_host')) {
$dest .= (($dest=~/\?/)?'&':'?') . 'ttoken='.$token;
}
}
}
unless ($found_server eq $lonhost) {
my $alias = &Apache::lonnet::use_proxy_alias($r,$found_server);
$hostname = $alias if ($alias ne '');
}
my $url = $protocol.'://'.$hostname.$dest;
my $start_page =
&Apache::loncommon::start_page('Switching Server ...',undef,
{'redirect' => [0,$url],});
my $end_page = &Apache::loncommon::end_page();
$r->print($start_page.$end_page);
return OK;
}
}
#
# Check if a LON-CAPA load balancer sent user here because user's browser sent
# it a balancer cookie for an active session on this server.
#
my $balcookie;
if ($env{'form.btoken'}) {
my %info = &Apache::lonnet::tmpget($env{'form.btoken'});
$balcookie = $info{'balcookie'};
&Apache::lonnet::tmpdel($env{'form.btoken'});
delete($env{'form.btoken'});
if (($env{'form.firsturl'} eq '/adm/email') &&
(exists($info{'display'})) && (exists($info{'mailrecip'}))) {
$env{'form.display'} = &unescape($info{'display'});
$env{'form.mailrecip'} = &unescape($info{'mailrecip'});
}
}
#
# If browser sent an old cookie for which the session file had been removed
# check if configuration for user's domain has a portal URL set. If so
# switch user's log-in to the portal.
#
if (($handle eq '') && ($userdom ne '')) {
my %domdefaults = &Apache::lonnet::get_domain_defaults($userdom);
if ($domdefaults{'portal_def'} =~ /^https?\:/) {
my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,
{'redirect' => [0,$domdefaults{'portal_def'}],});
my $end_page = &Apache::loncommon::end_page();
$r->print($start_page.$end_page);
return OK;
}
}
# -------------------------------- Prevent users from attempting to login twice
if ($handle ne '') {
&Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
my $start_page =
&Apache::loncommon::start_page('Already logged in');
my $end_page =
&Apache::loncommon::end_page();
my $dest = '/adm/roles';
if ($env{'form.firsturl'} ne '') {
$dest = &HTML::Entities::encode($env{'form.firsturl'},'\'"<>&');
}
if (($env{'form.ltoken'}) || ($env{'form.linkprot'})) {
my ($linkprot,$linkprotuser,$linkprotexit,$linkprotpbid,$linkprotpburl);
if ($env{'form.ltoken'}) {
my %info = &Apache::lonnet::tmpget($env{'form.ltoken'});
$linkprot = $info{'linkprot'};
if ($info{'linkprotuser'} ne '') {
$linkprotuser = $info{'linkprotuser'};
}
if ($info{'linkprotexit'} ne '') {
$linkprotexit = $info{'linkprotexit'};
}
if ($info{'linkprotpbid'} ne '') {
$linkprotpbid = $info{'linkprotpbid'};
}
if ($info{'linkprotpburl'} ne '') {
$linkprotpburl = $info{'linkprotpburl'};
}
} else {
$linkprot = $env{'form.linkprot'};
$linkprotuser = $env{'form.linkprotuser'};
$linkprotexit = $env{'form.linkprotexit'};
$linkprotpbid = $env{'form.linkprotpbid'};
$linkprotpburl = $env{'form.linkprotpburl'};
}
if ($linkprot) {
my ($linkprotector,$deeplink) = split(/:/,$linkprot,2);
if (($deeplink =~ m{^/tiny/$match_domain/\w+$}) &&
($linkprotuser ne '') && ($linkprotuser ne $env{'user.name'}.':'.$env{'user.domain'})) {
my $ip = &Apache::lonnet::get_requestor_ip();
my %linkprotinfo = (
origurl => $deeplink,
linkprot => $linkprot,
linkprotuser => $linkprotuser,
linkprotexit => $linkprotexit,
linkprotpbid => $linkprotpbid,
linkprotpburl => $linkprotpburl,
);
if ($env{'form.ltoken'}) {
my $delete = &Apache::lonnet::tmpdel($env{'form.ltoken'});
}
&Apache::migrateuser::logout($r,$ip,$handle,undef,undef,\%linkprotinfo);
return OK;
}
if ($env{'user.linkprotector'}) {
my @protectors = split(/,/,$env{'user.linkprotector'});
unless (grep(/^\Q$linkprotector\E$/,@protectors)) {
push(@protectors,$linkprotector);
@protectors = sort { $a <=> $b } @protectors;
&Apache::lonnet::appenv({'user.linkprotector' => join(',',@protectors)});
}
} else {
&Apache::lonnet::appenv({'user.linkprotector' => $linkprotector });
}
if ($env{'user.linkproturi'}) {
my @proturis = split(/,/,$env{'user.linkproturi'});
unless (grep(/^\Q$deeplink\E$/,@proturis)) {
push(@proturis,$deeplink);
@proturis = sort @proturis;
&Apache::lonnet::appenv({'user.linkproturi' => join(',',@proturis)});
}
} else {
&Apache::lonnet::appenv({'user.linkproturi' => $deeplink});
}
}
} elsif ($env{'form.linkkey'} ne '') {
if ($env{'form.firsturl'} =~ m{^/tiny/$match_domain/\w+$}) {
my $linkkey = $env{'form.linkkey'};
if ($env{'user.deeplinkkey'}) {
my @linkkeys = split(/,/,$env{'user.deeplinkkey'});
unless (grep(/^\Q$linkkey\E$/,@linkkeys)) {
push(@linkkeys,$linkkey);
&Apache::lonnet::appenv({'user.deeplinkkey' => join(',',sort(@linkkeys))});
}
} else {
&Apache::lonnet::appenv({'user.deeplinkkey' => $linkkey});
}
my $deeplink = $env{'form.firsturl'};
if ($env{'user.keyedlinkuri'}) {
my @keyeduris = split(/,/,$env{'user.keyedlinkuri'});
unless (grep(/^\Q$deeplink\E$/,@keyeduris)) {
push(@keyeduris,$deeplink);
&Apache::lonnet::appenv({'user.keyedlinkuri' => join(',',sort(@keyeduris))});
}
} else {
&Apache::lonnet::appenv({'user.keyedlinkuri' => $deeplink});
}
}
}
if ($env{'form.ltoken'}) {
my $delete = &Apache::lonnet::tmpdel($env{'form.ltoken'});
}
if (($env{'form.firsturl'} eq '/adm/email') && ($env{'form.display'})) {
if ($env{'form.mailrecip'}) {
if ($env{'form.mailrecip'} eq "$env{'user.name'}:$env{'user.domain'}") {
$dest .= (($dest=~/\?/)?'&':'?') . 'display='.&escape($env{'form.display'}).
'&mailrecip='.&escape($env{'form.mailrecip'});
}
} elsif (($env{'form.username'} eq $env{'user.name'}) && ($env{'form.domain'} eq $env{'user.domain'})) {
$dest .= (($dest=~/\?/)?'&':'?') . 'display='.&escape($env{'form.display'}).
'&mailrecip='.&escape("$env{'user.name'}:$env{'form.domain'}");
}
}
$r->print(
$start_page
.'<p class="LC_warning">'.&mt('You are already logged in!').'</p>'
.'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].',
'<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>'
.$end_page
);
return OK;
}
# ---------------------------------------------------- No valid token, continue
# ---------------------------- Not possible to really login to domain "public"
if ($env{'form.domain'} eq 'public') {
$env{'form.domain'}='';
$env{'form.username'}='';
}
# ------ Is this page requested because /adm/migrateuser detected an IP change?
my %sessiondata;
if ($env{'form.iptoken'}) {
%sessiondata = &Apache::lonnet::tmpget($env{'form.iptoken'});
unless ($sessiondata{'sessionserver'}) {
my $delete = &Apache::lonnet::tmpdel($env{'form.iptoken'});
delete($env{'form.iptoken'});
}
}
# ----------------------------------------------------------- Process Interface
$env{'form.interface'}=~s/\W//g;
(undef,undef,undef,undef,undef,undef,my $clientmobile) =
&Apache::loncommon::decode_user_agent($r);
my $iconpath=
&Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL'));
my $domain = &Apache::lonnet::default_login_domain();
my $defdom = $domain;
if ($lonhost ne '') {
unless ($sessiondata{'sessionserver'}) {
my $redirect = &check_loginvia($domain,$lonhost,$lonidsdir,$balcookie);
if ($redirect) {
$r->print($redirect);
return OK;
}
}
}
if (($sessiondata{'domain'}) &&
(&Apache::lonnet::domain($sessiondata{'domain'},'description'))) {
$domain=$sessiondata{'domain'};
} elsif (($env{'form.domain'}) &&
(&Apache::lonnet::domain($env{'form.domain'},'description'))) {
$domain=$env{'form.domain'};
}
my $role = $r->dir_config('lonRole');
my $loadlim = $r->dir_config('lonLoadLim');
my $uloadlim= $r->dir_config('lonUserLoadLim');
my $servadm = $r->dir_config('lonAdmEMail');
my $tabdir = $r->dir_config('lonTabDir');
my $include = $r->dir_config('lonIncludes');
my $expire = $r->dir_config('lonExpire');
my $version = $r->dir_config('lonVersion');
my $host_name = &Apache::lonnet::hostname($lonhost);
# --------------------------------------------- Default values for login fields
my ($authusername,$authdomain);
if ($sessiondata{'username'}) {
$authusername=$sessiondata{'username'};
} else {
$env{'form.username'} = &Apache::loncommon::cleanup_html($env{'form.username'});
$authusername=($env{'form.username'}?$env{'form.username'}:'');
}
if ($sessiondata{'domain'}) {
$authdomain=$sessiondata{'domain'};
} else {
$env{'form.domain'} = &Apache::loncommon::cleanup_html($env{'form.domain'});
$authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);
}
# ---------------------------------------------------------- Determine own load
my $loadavg;
{
my $loadfile=Apache::File->new('/proc/loadavg');
$loadavg=<$loadfile>;
}
$loadavg =~ s/\s.*//g;
my ($loadpercent,$userloadpercent);
if ($loadlim) {
$loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
}
if ($uloadlim) {
$userloadpercent=&Apache::lonnet::userload();
}
my $firsturl=
($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});
# ----------------------------------------------------------- Get announcements
my $announcements=&Apache::lonnet::getannounce();
# -------------------------------------------------------- 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) { $uextkey-=4294967296; }
# -------------------------------------------------------- Store away log token
my ($tokenextras,$tokentype,$linkprot_for_login);
my @names = ('role','symb','iptoken','ltoken','linkprotuser','linkprotexit',
'linkprot','linkkey','display','linkprotpbid','linkprotpburl');
foreach my $name (@names) {
if ($env{'form.'.$name} ne '') {
if ($name eq 'ltoken') {
my %info = &Apache::lonnet::tmpget($env{'form.'.$name});
if ($info{'linkprot'}) {
$linkprot_for_login = $info{'linkprot'};
$tokenextras .= '&linkprot='.&escape($info{'linkprot'});
foreach my $item ('linkprotuser','linkprotexit','linkprotpbid','linkprotpburl') {
if ($info{$item}) {
$tokenextras .= '&'.$item.'='.&escape($info{$item});
}
}
$tokentype = 'link';
last;
}
} elsif ($env{'form.display'} && ($env{'form.firsturl'} eq '/adm/email')) {
if (($env{'form.mailrecip'}) ||
($env{'form.username'} =~ /^$match_username$/) && ($env{'form.domain'} =~ /^$match_domain$/)) {
$tokenextras .= '&'.$name.'='.&escape($env{'form.display'});
if ($env{'form.mailrecip'}) {
$tokenextras .= '&mailrecip='.&escape($env{'form.mailrecip'});
} else {
$tokenextras .= '&mailrecip='.&escape($env{'form.username'}.':'.$env{'form.domain'});
}
}
} else {
$tokenextras .= '&'.$name.'='.&escape($env{'form.'.$name});
if (($name eq 'linkkey') || ($name eq 'linkprot')) {
if ((($env{'form.retry'}) || ($env{'form.sso'})) &&
(!$env{'form.ltoken'}) && ($name eq 'linkprot')) {
$linkprot_for_login = $env{'form.linkprot'};
}
$tokentype = 'link';
}
}
}
}
if ($tokentype) {
$tokenextras .= ":$tokentype";
}
my $logtoken=Apache::lonnet::reply(
'tmpput:'.$ukey.$lkey.'&'.&escape($firsturl).$tokenextras,
$lonhost);
# -- If we cannot talk to ourselves, or hostID does not map to a hostname
# we are in serious trouble
if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) {
if ($logtoken eq 'no_such_host') {
&Apache::lonnet::logthis('No valid logtoken for log-in page -- unable to determine hostname for hostID: '.$lonhost.'. Check entry in hosts.tab');
}
if ($env{'form.ltoken'}) {
&Apache::lonnet::tmpdel($env{'form.ltoken'});
delete($env{'form.ltoken'});
}
my $spares='';
my (@sparehosts,%spareservers);
my $sparesref = &Apache::lonnet::this_host_spares($defdom);
if (ref($sparesref) eq 'HASH') {
foreach my $key (keys(%{$sparesref})) {
if (ref($sparesref->{$key}) eq 'ARRAY') {
my @sorted = sort { &Apache::lonnet::hostname($a) cmp
&Apache::lonnet::hostname($b);
} @{$sparesref->{$key}};
if (@sorted) {
if ($key eq 'primary') {
unshift(@sparehosts,@sorted);
} elsif ($key eq 'default') {
push(@sparehosts,@sorted);
}
}
}
}
}
foreach my $hostid (@sparehosts) {
next if ($hostid eq $lonhost);
my $hostname = &Apache::lonnet::hostname($hostid);
next if (($hostname eq '') || ($spareservers{$hostname}));
$spareservers{$hostname} = 1;
my $protocol = $Apache::lonnet::protocol{$hostid};
$protocol = 'http' if ($protocol ne 'https');
$spares.='<br /><span style="font-size: larger;"><a href="'.$protocol.'://'.
$hostname.
'/adm/login?domain='.$authdomain.'">'.
$hostname.'</a>'.
' '.&mt('(preferred)').'</span>'.$/;
}
if ($spares) {
$spares.= '<br />';
}
my %all_hostnames = &Apache::lonnet::all_hostnames();
foreach my $hostid (sort
{
&Apache::lonnet::hostname($a) cmp
&Apache::lonnet::hostname($b);
}
keys(%all_hostnames)) {
next if ($hostid eq $lonhost);
my $hostname = &Apache::lonnet::hostname($hostid);
next if (($hostname eq '') || ($spareservers{$hostname}));
$spareservers{$hostname} = 1;
my $protocol = $Apache::lonnet::protocol{$hostid};
$protocol = 'http' if ($protocol ne 'https');
$spares.='<br /><a href="'.$protocol.'://'.
$hostname.
'/adm/login?domain='.$authdomain.'">'.
$hostname.'</a>';
}
$r->print(
'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">'
.'<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">'
.'<head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>'
.&mt('The LearningOnline Network with CAPA')
.'</title></head>'
.'<body bgcolor="#FFFFFF">'
.'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>'
.'<img src="/adm/lonKaputt/lonlogo_broken.gif" alt="broken icon" align="right" />'
.'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>');
if ($spares) {
$r->print('<p>'.&mt('Please attempt to login to one of the following servers:')
.'</p>'
.$spares);
}
$r->print('</body>'
.'</html>'
);
return OK;
}
# ----------------------------------------------- Apparently we are in business
$servadm=~s/\,/\<br \/\>/g;
# ----------------------------------------------------------- Front page design
my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain);
my $font=&Apache::loncommon::designparm('login.font',$domain);
my $link=&Apache::loncommon::designparm('login.link',$domain);
my $vlink=&Apache::loncommon::designparm('login.vlink',$domain);
my $alink=&Apache::loncommon::designparm('login.alink',$domain);
my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain);
my $loginbox_bg=&Apache::loncommon::designparm('login.sidebg',$domain);
my $loginbox_header_bgcol=&Apache::loncommon::designparm('login.bgcol',$domain);
my $loginbox_header_textcol=&Apache::loncommon::designparm('login.textcol',$domain);
my $logo=&Apache::loncommon::designparm('login.logo',$domain);
my $img=&Apache::loncommon::designparm('login.img',$domain);
my $domainlogo=&Apache::loncommon::domainlogo($domain);
my $showbanner = 1;
my $showmainlogo = 1;
if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) {
$showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain);
}
if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) {
$showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain);
}
my $showadminmail;
my @possdoms = &Apache::lonnet::current_machine_domains();
if (grep(/^\Q$domain\E$/,@possdoms)) {
$showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain);
}
my $showcoursecat =
&Apache::loncommon::designparm('login.coursecatalog',$domain);
my $shownewuserlink =
&Apache::loncommon::designparm('login.newuser',$domain);
my $showhelpdesk =
&Apache::loncommon::designparm('login.helpdesk',$domain);
my $now=time;
my $js = (<<ENDSCRIPT);
<script type="text/javascript" language="JavaScript">
// <![CDATA[
function send()
{
this.document.server.elements.uname.value
=this.document.client.elements.uname.value;
this.document.server.elements.udom.value
=this.document.client.elements.udom.value;
uextkey=this.document.client.elements.uextkey.value;
lextkey=this.document.client.elements.lextkey.value;
initkeys();
if(this.document.server.action.substr(0,5) === 'http:'){
this.document.server.elements.upass0.value
=getCrypted(this.document.client.elements.upass$now.value);
} else {
this.document.server.elements.upass0.value
=this.document.client.elements.upass$now.value;
}
this.document.client.elements.uname.value='';
this.document.client.elements.upass$now.value='';
this.document.server.submit();
return false;
}
function enableInput() {
this.document.client.elements.upass$now.removeAttribute("readOnly");
this.document.client.elements.uname.removeAttribute("readOnly");
this.document.client.elements.udom.removeAttribute("readOnly");
return;
}
// ]]>
</script>
ENDSCRIPT
my ($lonhost_in_use,@hosts,%defaultdomconf,$saml_prefix,$saml_landing,
$samlssotext,$samlnonsso,$samlssoimg,$samlssoalt,$samlssourl,$samltooltip,
$samlwindow);
%defaultdomconf = &Apache::loncommon::get_domainconf($defdom);
@hosts = &Apache::lonnet::current_machine_ids();
$lonhost_in_use = $lonhost;
if (@hosts > 1) {
foreach my $hostid (@hosts) {
if (&Apache::lonnet::host_domain($hostid) eq $defdom) {
$lonhost_in_use = $hostid;
last;
}
}
}
$saml_prefix = $defdom.'.login.saml_';
if ($defaultdomconf{$saml_prefix.$lonhost_in_use}) {
$saml_landing = 1;
$samlssotext = $defaultdomconf{$saml_prefix.'text_'.$lonhost_in_use};
$samlnonsso = $defaultdomconf{$saml_prefix.'notsso_'.$lonhost_in_use};
$samlssoimg = $defaultdomconf{$saml_prefix.'img_'.$lonhost_in_use};
$samlssoalt = $defaultdomconf{$saml_prefix.'alt_'.$lonhost_in_use};
$samlssourl = $defaultdomconf{$saml_prefix.'url_'.$lonhost_in_use};
$samltooltip = $defaultdomconf{$saml_prefix.'title_'.$lonhost_in_use};
$samlwindow = $defaultdomconf{$saml_prefix.'window_'.$lonhost_in_use};
}
if ($saml_landing) {
if ($samlssotext eq '') {
$samlssotext = 'SSO Login';
}
if ($samlnonsso eq '') {
$samlnonsso = 'Non-SSO Login';
}
$js .= <<"ENDSAMLJS";
<script type="text/javascript">
// <![CDATA[
function toggleLClogin() {
if (document.getElementById('LC_standard_login')) {
if (document.getElementById('LC_standard_login').style.display == 'none') {
document.getElementById('LC_standard_login').style.display = 'inline-block';
if (document.getElementById('LC_login_text')) {
document.getElementById('LC_login_text').innerHTML = '$samlnonsso';
}
if ( document.client.uname ) { document.client.uname.focus(); }
if (document.getElementById('LC_SSO_login')) {
document.getElementById('LC_SSO_login').style.display = 'none';
}
} else {
document.getElementById('LC_standard_login').style.display = 'none';
if (document.getElementById('LC_login_text')) {
document.getElementById('LC_login_text').innerHTML = '$samlssotext';
}
if (document.getElementById('LC_SSO_login')) {
document.getElementById('LC_SSO_login').style.display = 'inline-block';
}
}
}
return;
}
// ]]>
</script>
ENDSAMLJS
}
# --------------------------------------------------- Print login screen header
my %add_entries = (
bgcolor => "$mainbg",
text => "$font",
link => "$link",
vlink => "$vlink",
alink => "$alink",
onload => 'javascript:enableInput();',);
my ($headextra,$headextra_exempt);
$headextra = $defaultdomconf{$defdom.'.login.headtag_'.$lonhost_in_use};
$headextra_exempt = $defaultdomconf{$domain.'.login.headtag_exempt_'.$lonhost_in_use};
if ($headextra) {
my $omitextra;
if ($headextra_exempt ne '') {
my @exempt = split(',',$headextra_exempt);
my $ip = &Apache::lonnet::get_requestor_ip();
if (grep(/^\Q$ip\E$/,@exempt)) {
$omitextra = 1;
}
}
unless ($omitextra) {
my $confname = $defdom.'-domainconfig';
if ($headextra =~ m{^\Q/res/$defdom/$confname/login/headtag/$lonhost_in_use/\E}) {
my $extra = &Apache::lonnet::getfile(&Apache::lonnet::filelocation("",$headextra));
unless ($extra eq '-1') {
$js .= "\n".$extra."\n";
}
}
}
}
$r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,
{ 'redirect' => [$expire,'/adm/roles'],
'add_entries' => \%add_entries,
'only_body' => 1,}));
# ----------------------------------------------------------------------- Texts
my %lt=&Apache::lonlocal::texthash(
'un' => 'Username',
'pw' => 'Password',
'dom' => 'Domain',
'perc' => 'percent',
'load' => 'Server Load',
'userload' => 'User Load',
'catalog' => 'Course/Community Catalog',
'log' => 'Log in',
'help' => 'Log-in Help',
'serv' => 'Server',
'servadm' => 'Server Administration',
'helpdesk' => 'Contact Helpdesk',
'forgotpw' => 'Forgot password?',
'newuser' => 'New User?',
'change' => 'Change?',
);
# -------------------------------------------------- Change password field name
my $forgotpw = &forgotpwdisplay(%lt);
$forgotpw .= '<br />' if $forgotpw;
my $loginhelp = &Apache::lonauth::loginhelpdisplay($authdomain);
if ($loginhelp) {
$loginhelp = '<a href="'.$loginhelp.'">'.$lt{'help'}.'</a><br />';
}
# ---------------------------------------------------- Serve out DES JavaScript
{
my $jsh=Apache::File->new($include."/londes.js");
$r->print(<$jsh>);
}
# ---------------------------------------------------------- Serve rest of page
$r->print(
'<div class="LC_Box"'
.' style="margin:0 auto; padding:10px; width:90%; height: auto; background-color:#FFFFFF;">'
);
my $target = '_top';
if ($sessiondata{'linkprot'}) {
my ($linkprotector,$deeplink) = split(/:/,$sessiondata{'linkprot'},2);
if (($deeplink eq $sessiondata{'origurl'}) &&
(($sessiondata{'linkprotuser'} eq $sessiondata{'username'}.':'.$sessiondata{'domain'}) ||
($sessiondata{'linkprotuser'} eq $sessiondata{'username'}))) {
$target = '_self';
}
}
$r->print(<<ENDSERVERFORM);
<form name="server" action="/adm/authenticate" method="post" target="$target">
<input type="hidden" name="logtoken" value="$logtoken" />
<input type="hidden" name="serverid" value="$lonhost" />
<input type="hidden" name="uname" value="" />
<input type="hidden" name="upass0" value="" />
<input type="hidden" name="udom" value="" />
<input type="hidden" name="localpath" value="$env{'form.localpath'}" />
<input type="hidden" name="localres" value="$env{'form.localres'}" />
</form>
ENDSERVERFORM
my $coursecatalog;
if (($showcoursecat eq '') || ($showcoursecat)) {
$coursecatalog = &coursecatalog_link($lt{'catalog'}).'<br />';
}
my $newuserlink;
if ($shownewuserlink) {
$newuserlink = &newuser_link($lt{'newuser'}).'<br />';
}
my $logintitle =
'<h2 class="LC_hcell"'
.' style="background:'.$loginbox_header_bgcol.';'
.' color:'.$loginbox_header_textcol.'">'
.$lt{'log'}
.'</h2>';
my $noscript_warning='<noscript><span class="LC_warning"><b>'
.&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')
.'</b></span></noscript>';
my $helpdeskscript;
my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,
$authdomain,\$helpdeskscript,
$showhelpdesk,\@possdoms);
my $mobileargs;
if ($clientmobile) {
$mobileargs = 'autocapitalize="off" autocorrect="off"';
}
my $loginform=(<<LFORM);
<form name="client" action="" onsubmit="return(send())" id="lclogin">
<input type="hidden" name="lextkey" value="$lextkey" />
<input type="hidden" name="uextkey" value="$uextkey" />
<b><label for="uname">$lt{'un'}</label>:</b><br />
<input type="text" name="uname" id="uname" size="15" value="$authusername" readonly="readonly" $mobileargs /><br />
<b><label for="upass$now">$lt{'pw'}</label>:</b><br />
<input type="password" name="upass$now" id="upass$now" size="15" readonly="readonly" /><br />
<b><label for="udom">$lt{'dom'}</label>:</b><br />
<input type="text" name="udom" id="udom" size="15" value="$authdomain" readonly="readonly" $mobileargs /><br />
<input type="submit" value="$lt{'log'}" />
</form>
LFORM
if ($showbanner) {
my $alttext = &Apache::loncommon::designparm('login.alttext_img',$domain);
if ($alttext eq '') {
$alttext = 'The Learning Online Network with CAPA';
}
$r->print(<<HEADER);
<!-- The LON-CAPA Header -->
<div style="background:$pgbg;margin:0;width:100%;">
<img src="$img" border="0" alt="$alttext" class="LC_maxwidth" id="lcloginbanner" />
</div>
HEADER
}
my $stdauthformstyle = 'inline-block';
my $ssoauthstyle = 'none';
my $sso_onclick;
my $logintype;
$r->print('<div style="float:left;margin-top:0;">');
if ($saml_landing) {
$ssoauthstyle = 'inline-block';
$stdauthformstyle = 'none';
$logintype = $samlssotext;
my $ssologin = '/adm/sso';
if ($samlssourl ne '') {
$ssologin = $samlssourl;
}
my $ssologin_for_js = &js_escape($ssologin);
my $querystr_for_js;
if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) {
my $querystring;
if ($env{'form.firsturl'} ne '') {
$querystring = 'origurl=';
if ($env{'form.firsturl'} =~ /[^\x00-\xFF]/) {
$querystring .= &uri_escape_utf8($env{'form.firsturl'});
} else {
$querystring .= &uri_escape($env{'form.firsturl'});
}
$querystring = &HTML::Entities::encode($querystring,"'");
}
if ($env{'form.ltoken'} ne '') {
$querystring .= (($querystring eq '')?'':'&') . 'ltoken='.
&HTML::Entities::encode(&uri_escape($env{'form.ltoken'}));
} elsif ($env{'form.linkkey'}) {
$querystring .= (($querystring eq '')?'':'&') . 'linkkey='.
&HTML::Entities::encode(&uri_escape($env{'form.linkkey'}));
}
if ($querystring ne '') {
$ssologin .= (($ssologin=~/\?/)?'&':'?') . $querystring;
$querystr_for_js = &js_escape($querystring);
}
} elsif ($logtoken ne '') {
$ssologin .= (($ssologin=~/\?/)?'&':'?') . 'logtoken='.$logtoken;
$querystr_for_js = &js_escape('logtoken='.$logtoken);
}
my $ssohref;
if ($samlwindow) {
$sso_onclick = <<"ENDJS";
if (document.getElementById('LC_sso_login_link')) {
var ssoelem = document.getElementById('LC_sso_login_link')
ssoelem.addEventListener('click',samlWinFunction,false);
var windows = {};
function samlWinFunction(evt) {
evt.preventDefault();
var url = '$ssologin_for_js';
var name = 'lcssowin';
var querystr = '$querystr_for_js';
if (querystr) {
url += '?'+querystr+'&lcssowin=1';
} else {
url += '?lcssowin=1';
}
if ((typeof windows[name] !== 'undefined') && (!windows[name].closed)) {
windows[name].close();
}
windows[name]=window.open(url,name,'width=350,height=600');
windows[name].focus();
return false;
}
}
ENDJS
}
if ($samlssoimg ne '') {
$ssohref = '<a href="'.$ssologin.'" title="'.$samltooltip.'" id="LC_sso_login_link">'.
'<img src="'.$samlssoimg.'" alt="'.$samlssoalt.'" id="lcssobutton" /></a>';
} else {
$ssohref = '<a href="'.$ssologin.'" id="LC_sso_login_link">'.$samlssotext.'</a>';
}
if (($env{'form.saml'} eq 'no') ||
(($env{'form.username'} ne '') && ($env{'form.domain'} ne ''))) {
$ssoauthstyle = 'none';
$stdauthformstyle = 'inline-block';
$logintype = $samlnonsso;
}
$r->print(<<ENDSAML);
<p>
Log-in type:
<span style="font-weight:bold" id="LC_login_text">$logintype</span><br />
<span><a href="javascript:toggleLClogin();" style="color:#000000">$lt{'change'}</a></span>
</p>
<div style="display:$ssoauthstyle" id="LC_SSO_login">
<div class="LC_Box" style="padding-top: 10px;">
$ssohref
$noscript_warning
</div>
<div class="LC_Box" style="padding-top: 10px;">
$loginhelp
$contactblock
$coursecatalog
</div>
</div>
ENDSAML
} else {
if ($env{'form.ltoken'}) {
&Apache::lonnet::tmpdel($env{'form.ltoken'});
delete($env{'form.ltoken'});
}
}
my $in_frame_js;
if ($linkprot_for_login) {
my ($linkprotector,$linkproturi) = split(/:/,$linkprot_for_login,2);
if (($linkprotector =~ /^\d+(c|d)$/) && ($linkproturi =~ m{^/+tiny/+$LONCAPA::match_domain/+\w+$})) {
my $set_target;
if (($env{'form.retry'}) || ($env{'form.sso'})) {
if ($linkproturi eq $env{'form.firsturl'}) {
$set_target = " document.server.target = '_self';";
}
} else {
$set_target = <<ENDTARG;
var linkproturi = '$linkproturi';
var path = document.location.pathname.replace( new RegExp('^/adm/launch'),'');
if (linkproturi == path) {
document.server.target = '_self';
}
ENDTARG
}
$in_frame_js = <<ENDJS;
<script type="text/javascript">
// <![CDATA[
if ((window.self !== window.top) && (document.server.target != '_self')) {
$set_target
$sso_onclick
}
// ]]>
</script>
ENDJS
}
} elsif ($samlwindow) {
$in_frame_js = <<ENDJS;
<script type="text/javascript">
// <![CDATA[
if ((window.self !== window.top) && (document.server.target != '_self')) {
$sso_onclick
}
// ]]>
</script>
ENDJS
}
$r->print(<<ENDLOGIN);
<div style="display:$stdauthformstyle;" id="LC_standard_login">
<div class="LC_Box" style="background:$loginbox_bg;">
$logintitle
$loginform
$noscript_warning
</div>
<div class="LC_Box" style="padding-top: 10px;">
$loginhelp
$forgotpw
$contactblock
$newuserlink
$coursecatalog
</div>
</div>
ENDLOGIN
$r->print('</div><div>'."\n");
if ($showmainlogo) {
my $alttext = &Apache::loncommon::designparm('login.alttext_logo',$domain);
$r->print(' <img src="'.$logo.'" alt="'.$alttext.'" class="LC_maxwidth" id="lcloginmainlogo" />'."\n");
}
$r->print(<<ENDTOP);
$announcements
</div>
<hr style="clear:both;" />
ENDTOP
my ($domainrow,$serverrow,$loadrow,$userloadrow,$versionrow);
$domainrow = <<"END";
<tr>
<td align="left" valign="top">
<small><b>$lt{'dom'}: </b></small>
</td>
<td align="left" valign="top">
<small><tt> $domain</tt></small>
</td>
</tr>
END
$serverrow = <<"END";
<tr>
<td align="left" valign="top">
<small><b>$lt{'serv'}: </b></small>
</td>
<td align="left" valign="top">
<small><tt> $lonhost ($role)</tt></small>
</td>
</tr>
END
if ($loadlim) {
$loadrow = <<"END";
<tr>
<td align="left" valign="top">
<small><b>$lt{'load'}: </b></small>
</td>
<td align="left" valign="top">
<small><tt> $loadpercent $lt{'perc'}</tt></small>
</td>
</tr>
END
}
if ($uloadlim) {
$userloadrow = <<"END";
<tr>
<td align="left" valign="top">
<small><b>$lt{'userload'}: </b></small>
</td>
<td align="left" valign="top">
<small><tt> $userloadpercent $lt{'perc'}</tt></small>
</td>
</tr>
END
}
if (($version ne '') && ($version ne '<!-- VERSION -->')) {
$versionrow = <<"END";
<tr>
<td colspan="2" align="left">
<small>$version</small>
</td>
</tr>
END
}
$r->print(<<ENDDOCUMENT);
<div style="float: left;">
<table border="0" cellspacing="0" cellpadding="0">
$domainrow
$serverrow
$loadrow
$userloadrow
$versionrow
</table>
</div>
<div style="float: right;">
$domainlogo
</div>
<br style="clear:both;" />
</div>
$in_frame_js
<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
my %endargs = ( 'noredirectlink' => 1, );
$r->print(&Apache::loncommon::end_page(\%endargs));
return OK;
}
sub check_loginvia {
my ($domain,$lonhost,$lonidsdir,$balcookie) = @_;
if ($domain eq '' || $lonhost eq '' || $lonidsdir eq '') {
return;
}
my %domconfhash = &Apache::loncommon::get_domainconf($domain);
my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost};
my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost};
my $output;
if ($loginvia ne '') {
my $noredirect;
my $ip = &Apache::lonnet::get_requestor_ip();
if ($ip eq '127.0.0.1') {
$noredirect = 1;
} else {
if ($loginvia_exempt ne '') {
my @exempt = split(',',$loginvia_exempt);
if (grep(/^\Q$ip\E$/,@exempt)) {
$noredirect = 1;
}
}
}
unless ($noredirect) {
my ($newhost,$path);
if ($loginvia =~ /:/) {
($newhost,$path) = split(':',$loginvia);
} else {
$newhost = $loginvia;
}
if ($newhost ne $lonhost) {
if (&Apache::lonnet::hostname($newhost) ne '') {
if ($balcookie) {
my ($balancer,$cookie) = split(/:/,$balcookie);
if ($cookie =~ /^($match_domain)_($match_username)_([a-f0-9]+)$/) {
my ($udom,$uname,$cookieid) = ($1,$2,$3);
unless (&Apache::lonnet::delbalcookie($cookie,$balancer) eq 'ok') {
if ((-d $lonidsdir) && (opendir(my $dh,$lonidsdir))) {
while (my $filename=readdir($dh)) {
if ($filename=~/^(\Q$uname\E_\d+_\Q$udom\E_$match_lonid)\.id$/) {
my $handle = $1;
my %hash =
&Apache::lonnet::get_sessionfile_vars($handle,$lonidsdir,
['request.balancercookie',
'user.linkedenv']);
if ($hash{'request.balancercookie'} eq "$balancer:$cookieid") {
if (unlink("$lonidsdir/$filename")) {
if (($hash{'user.linkedenv'} =~ /^[a-f0-9]+_linked$/) &&
(-l "$lonidsdir/$hash{'user.linkedenv'}.id") &&
(readlink("$lonidsdir/$hash{'user.linkedenv'}.id") eq "$lonidsdir/$filename")) {
unlink("$lonidsdir/$hash{'user.linkedenv'}.id");
}
}
}
last;
}
}
closedir($dh);
}
}
}
}
$output = &redirect_page($newhost,$path);
}
}
}
}
return $output;
}
sub redirect_page {
my ($desthost,$path) = @_;
my $hostname = &Apache::lonnet::hostname($desthost);
my $protocol = $Apache::lonnet::protocol{$desthost};
$protocol = 'http' if ($protocol ne 'https');
unless ($path =~ m{^/}) {
$path = '/'.$path;
}
my $url = $protocol.'://'.$hostname.$path;
my $args = {};
if ($env{'form.firsturl'} =~ m{^/tiny/$match_domain/\w+$}) {
$url = $protocol.'://'.$hostname.$env{'form.firsturl'};
if (($env{'form.ltoken'}) || ($env{'form.linkprot'} ne '') ||
($env{'form.linkkey'} ne '')) {
my %link_info;
if ($env{'form.ltoken'}) {
%link_info = &Apache::lonnet::tmpget($env{'form.ltoken'});
&Apache::lonnet::tmpdel($env{'form.ltoken'});
$args->{'only_body'} = 1;
} elsif ($env{'form.linkprot'}) {
$link_info{'linkprot'} = $env{'form.linkprot'};
foreach my $item ('linkprotuser','linkprotexit','linkprotpbid','linkprotpburl') {
if ($env{'form.'.$item}) {
$link_info{$item} = $env{'form.'.$item};
}
}
$args->{'only_body'} = 1;
} elsif ($env{'form.linkkey'} ne '') {
$link_info{'linkkey'} = $env{'form.linkkey'};
}
my $token = &Apache::lonnet::tmpput(\%link_info,$desthost,'link');
unless (($token eq 'con_lost') || ($token eq 'refused') ||
($token eq 'unknown_cmd') || ($token eq 'no_such_host')) {
$url .= '?ltoken='.$token;
}
}
} else {
my $querystring;
if ($env{'form.firsturl'} ne '') {
if ($env{'form.firsturl'} =~ /[^\x00-\xFF]/) {
$querystring = &uri_escape_utf8($env{'form.firsturl'});
} else {
$querystring = &uri_escape($env{'form.firsturl'});
}
$querystring = &HTML::Entities::encode($querystring,"'");
$querystring = '?firsturl='.$querystring;
}
if ($env{'form.ltoken'}) {
my %link_info = &Apache::lonnet::tmpget($env{'form.ltoken'});
&Apache::lonnet::tmpdel($env{'form.ltoken'});
my $token = &Apache::lonnet::tmpput(\%link_info,$desthost,'link');
unless (($token eq 'con_lost') || ($token eq 'refused') || ($token =~ /^error:/) ||
($token eq 'unknown_cmd') || ($token eq 'no_such_host')) {
unless (($path eq '/adm/roles') || ($path eq '/adm/login')) {
$url = $protocol.'://'.$hostname.'/adm/roles';
}
$querystring .= (($querystring =~/^\?/)?'&':'?') . 'ttoken='.$token;
}
}
$url .= $querystring;
}
$args->{'redirect'} = [0,$url,'','',1];
my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,$args);
my $end_page = &Apache::loncommon::end_page();
return $start_page.$end_page;
}
sub contactdisplay {
my ($lt,$servadm,$showadminmail,$authdomain,$helpdeskscript,$showhelpdesk,
$possdoms) = @_;
my $contactblock;
my $origmail;
if (ref($possdoms) eq 'ARRAY') {
if (grep(/^\Q$authdomain\E$/,@{$possdoms})) {
$origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
}
}
my $requestmail =
&Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
$authdomain,$origmail);
unless ($showhelpdesk eq '0') {
if ($requestmail =~ m/[^\@]+\@[^\@]+/) {
$showhelpdesk = 1;
} else {
$showhelpdesk = 0;
}
}
if ($servadm && $showadminmail) {
$contactblock .= $$lt{'servadm'}.':<br />'.
'<tt>'.$servadm.'</tt><br />';
}
if ($showhelpdesk) {
$contactblock .= '<a href="javascript:helpdesk()">'.$lt->{'helpdesk'}.'</a><br />';
my $thisurl = &escape('/adm/login');
$$helpdeskscript = <<"ENDSCRIPT";
<script type="text/javascript">
// <![CDATA[
function helpdesk() {
var possdom = document.client.udom.value;
var codedom = possdom.replace( new RegExp("[^A-Za-z0-9.\\-]","g"),'');
if (codedom == '') {
codedom = "$authdomain";
}
var querystr = "origurl=$thisurl&codedom="+codedom;
document.location.href = "/adm/helpdesk?"+querystr;
return;
}
// ]]>
</script>
ENDSCRIPT
}
return $contactblock;
}
sub forgotpwdisplay {
my (%lt) = @_;
my $prompt_for_resetpw = 1;
if ($prompt_for_resetpw) {
return '<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a>';
}
return;
}
sub coursecatalog_link {
my ($linkname) = @_;
return <<"END";
<a href="/adm/coursecatalog">$linkname</a>
END
}
sub newuser_link {
my ($linkname) = @_;
return '<a href="/adm/createaccount">'.$linkname.'</a>';
}
sub decode_token {
my ($info) = @_;
my ($firsturl,@rest)=split(/\&/,$info);
my %form;
if ($firsturl ne '') {
$form{'firsturl'} = &unescape($firsturl);
}
foreach my $item (@rest) {
my ($key,$value) = split(/=/,$item);
$form{$key} = &unescape($value);
}
return %form;
}
1;
__END__
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