--- loncom/auth/lonlogin.pm 2004/02/10 19:23:11 1.55.4.1 +++ loncom/auth/lonlogin.pm 2022/06/26 04:03:47 1.200 @@ -1,548 +1,1296 @@ -# The LearningOnline Network -# Login Screen -# -# $Id: lonlogin.pm,v 1.55.4.1 2004/02/10 19:23:11 albertel 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 CGI::Cookie(); -use Apache::File (); -use Apache::lonnet(); -use Apache::loncommon(); -use Apache::lonauth(); -use Apache::lonlocal; - -sub handler { - my $r = shift; - &Apache::loncommon::no_cache($r); - &Apache::lonlocal::get_language_handle($r); - &Apache::loncommon::content_type($r,'text/html'); - $r->send_http_header; - return OK if $r->header_only; - - -# Are we re-routing? - if (-e '/home/httpd/html/lon-status/reroute.txt') { - &Apache::lonauth::reroute($r); - return OK; - } - -# -------------------------------- Prevent users from attempting to login twice - my %cookies=CGI::Cookie->parse($r->header_in('Cookie')); - my $lonid=$cookies{'lonID'}; - my $cookie; - if ($lonid) { - my $handle=$lonid->value; - $handle=~s/\W//g; - my $lonidsdir=$r->dir_config('lonIDsDir'); - if ((-e "$lonidsdir/$handle.id") && ($handle ne '')) { -# Indeed, a valid token is found - my $bodytag=&Apache::loncommon::bodytag('Already logged in'); - $r->print(< - -Already logged in - - -$bodytag -

You are already logged in

-

Please either continue the current session or -logout.

-

-Problems?

- - -ENDFAILED - return OK; - } - } - -# ---------------------------------------------------- No valid token, continue - - &Apache::loncommon::get_unprocessed_cgi - ($ENV{'QUERY_STRING'}.'&'.$ENV{'request.querystring'}, - ['interface','username','domain','firsturl','localpath','localres']); - - -# ----------------------------------------------------------- Process Interface - $ENV{'form.interface'}=~s/\W//g; - - my $textbrowsers=$r->dir_config('lonTextBrowsers'); - my $httpbrowser=$ENV{"HTTP_USER_AGENT"}; - - foreach (split(/\:/,$textbrowsers)) { - if ($httpbrowser=~/$_/i) { - $ENV{'form.interface'}='textual'; - } - } - - my $fullgraph=($ENV{'form.interface'} ne 'textual'); - my $port_to_use=$r->dir_config('lonhttpdPort'); - if (!defined($port_to_use)) { - $port_to_use='8080'; - } - my $iconpath= 'http://'.$ENV{'HTTP_HOST'}.':'.$port_to_use. - $r->dir_config('lonIconsURL'); - my $domain = $r->dir_config('lonDefDomain'); - my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0]; - foreach my $posdom (values(%Apache::lonnet::hostdom)) { - if ($posdom eq $testdomain) { $domain=$testdomain; } - } - if (($ENV{'form.domain'}) && - ($Apache::lonnet::domaindescription{$ENV{'form.domain'}})) { - $domain=$ENV{'form.domain'}; - } - 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 $expire = $r->dir_config('lonExpire'); - my $version = $r->dir_config('lonVersion'); - -# --------------------------------------------- Default values for login fields - - my $authusername=($ENV{'form.username'}?$ENV{'form.username'}:''); - my $authdomain=($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 $loadpercent=100*$loadavg/$loadlim; - my $userloadpercent=&Apache::lonnet::userload(); - -# ------------------------------------------------------- Do the load balancing - my $otherserver='http://'.$ENV{'SERVER_NAME'}; - my $firsturl= - ($ENV{'request.firsturl'}?$ENV{'request.firsturl'}:$ENV{'form.firsturl'}); -# ---------------------------------------- Are we access server and overloaded? - if (($role eq 'access') && - (($userloadpercent>100.0)||($loadpercent>100.0))) { - my $unloaded=Apache::lonnet::spareserver($loadpercent,$userloadpercent); - if ($unloaded) { $otherserver=$unloaded; } - } - -# ----------------------------------------------------------- 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 $logtoken=Apache::lonnet::reply( - 'tmpput:'.$ukey.$lkey.'&'.$firsturl, - $lonhost); - -# ------------------- If we cannot talk to ourselves, we are in serious trouble - - if ($logtoken eq 'con_lost') { - my $spares=''; - foreach (keys %Apache::lonnet::hostname) { - if ($_ ne $lonhost) { - $spares.='
'. - $Apache::lonnet::hostname{$_}.''; - if ($Apache::lonnet::spareid{$_}) { - $spares.=' (preferred)'; - } - } - } - $r->print(< -The LearningOnline Network with CAPA - - -

This LON-CAPA server is temporarily not available for login

-

Please attempt to login to one of the following servers:

$spares -

If the problem persists, please contact $servadm.

- - -ENDTROUBLE - return OK; - } - -# ----------------------------------------------- Apparently we are in business - - my $domainlogo=&Apache::loncommon::domainlogo($domain); - $servadm=~s/\,/\
/g; - $sysadm=~s/\,/\
/g; - -# --------------------------------------------------- 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 $pgbg= - ($fullgraph?&Apache::loncommon::designparm('login.pgbg',$domain):'#FFFFFF'); - my $font= - ($fullgraph?&Apache::loncommon::designparm('login.font',$domain):'#000000'); - my $link= - ($fullgraph?&Apache::loncommon::designparm('login.link',$domain):'#0000FF'); - my $vlink= - ($fullgraph?&Apache::loncommon::designparm('login.vlink',$domain):'#0000FF'); - my $alink=&Apache::loncommon::designparm('login.alink',$domain); - my $mainbg= - ($fullgraph?&Apache::loncommon::designparm('login.mainbg',$domain):'#FFFFFF'); - my $sidebg= - ($fullgraph?&Apache::loncommon::designparm('login.sidebg',$domain):'#FFFFFF'); - my $logo=&Apache::loncommon::designparm('login.logo',$domain); - my $img=&Apache::loncommon::designparm('login.img',$domain); - -# ----------------------------------------------------------------------- Texts - -my %lt=&Apache::lonlocal::texthash( - 'un' => 'Username', - 'pw' => 'Password', - 'dom' => 'Domain', - 'perc' => 'percent', - 'load' => 'Load', - 'userload' => 'User Load', - 'about' => 'aboutlon.gif', - 'access' => 'accessbutton.gif', - 'auth' => 'userauthentication.gif', - 'log' => 'Log in', - 'help' => 'Help', - 'serv' => 'Server', - 'servadm' => 'Server Administration', - 'sysadm' => 'System Administration'); - - -# ---------------------------------------------------------- Serve rest of page - $r->print(< - - -ENDSCRIPT - - if ($fullgraph) { - $r->print( - ''); - } - - $r->print(< - - - - - - - - - - - - - - - -ENDSERVERFORM - if ($fullgraph) { $r->print(< - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
The Learning Online Network with CAPA
 
- Accessibility Options -
- About LON-CAPA - 		-
- -
-
-ENDTOP -} else { - $r->print('

The LearningOnline Network with CAPA

Text-based Interface Login

'.$announcements); -} - $r->print('
'); - unless ($fullgraph) { - $r->print(<Select Accessibility Options - Suppress rendering of images
- Suppress Java applets
- Suppress rendering of embedded multimedia
- Increase font size
- Switch to black and white mode
-

If you have accessibility needs that are not addressed by this interface, -please -contact the system administrator at $sysadm.


- Remember these settings for next login
-ENDACCESSOPTIONS -} else { - $r->print(< - - - - - -ENDNOOPT -} - $r->print(< - - - - - - - - - - - - - - - - - - - - - -
User Authentication

   $lt{'un'}:
   $lt{'pw'}:
   $lt{'dom'}:
   $lt{'help'} -
- -
- - -ENDLOGIN - if ($fullgraph) { - $r->print(< - - -
$announcements
-
- - - - - - - - - - - - - - - - - -
-    $lt{'dom'}:  - -  $domain -
-    $lt{'serv'}:  - -  $lonhost ($role) -
-    $lt{'load'}:  - -  $loadpercent $lt{'perc'} -
-    $lt{'userload'}:  - -  $userloadpercent $lt{'perc'} -
-
- -    $lt{'sysadm'}:
-       $sysadm
-    $lt{'servadm'}:
-       $servadm
 
-    $version - - 		-$domainlogo -
 
- - - -ENDDOCUMENT -} - $r->print(''); - return OK; -} - -1; -__END__ +# The LearningOnline Network +# Login Screen +# +# $Id: lonlogin.pm,v 1.200 2022/06/26 04:03:47 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'}, + $ENV{'REDIRECT_QUERY_STRING'}), + ['interface','username','domain','firsturl','localpath','localres', + 'token','role','symb','iptoken','btoken','ltoken','ttoken','linkkey', + 'saml','sso','retry']); + +# -- check if they are a migrating user + if (defined($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'} = $info{'linkprot'}; + if ($info{'linkprotuser'} ne '') { + $env{'form.linkprotuser'} = $info{'linkprotuser'}; + } + } elsif ($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'}; + } + 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'} = $env{'form.linkprot'}; + if ($env{'form.linkprotuser'} ne '') { + $link_info{'linkprotuser'} = $env{'form.linkprotuser'}; + } + } elsif ($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($env{'form.btoken'}); + } + +# +# If browser sent an old cookie for which the session file had been removed +# check if configuration for user's domain has a portal URL set. If so +# switch user's log-in to the portal. +# + + if (($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); + if ($env{'form.ltoken'}) { + my %info = &Apache::lonnet::tmpget($env{'form.ltoken'}); + $linkprot = $info{'linkprot'}; + if ($info{'linkprotuser'} ne '') { + $linkprotuser = $info{'linkprotuser'}; + } + } else { + $linkprot = $env{'form.linkprot'}; + $linkprotuser = $env{'form.linkprotuser'}; + } + if ($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 => $linkprotuser, + ); + if ($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'}); + } + $r->print( + $start_page + .'

'.&mt('You are already logged in!').'

' + .'

'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].', + '','','','').'

' + .$end_page + ); + return OK; + } + +# ---------------------------------------------------- No valid token, continue + +# ---------------------------- Not possible to really login to domain "public" + if ($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','linkprot','linkkey'); + 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'}); + if ($info{'linkprotuser'}) { + $tokenextras .= '&linkprotuser='.&escape($info{'linkprotuser'}); + } + $tokentype = 'link'; + last; + } + } 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.='
'. + $hostname.''. + ' '.&mt('(preferred)').''.$/; + } + if ($spares) { + $spares.= '
'; + } + 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.='
'. + $hostname.''; + } + $r->print( + '' + .'' + .'' + .&mt('The LearningOnline Network with CAPA') + .'' + .'' + .'

'.&mt('The LearningOnline Network with CAPA').'

' + .'broken icon' + .'

'.&mt('This LON-CAPA server is temporarily not available for login.').'

'); + if ($spares) { + $r->print('

'.&mt('Please attempt to login to one of the following servers:') + .'

' + .$spares); + } + $r->print('' + .'' + ); + return OK; + } + +# ----------------------------------------------- Apparently we are in business + $servadm=~s/\,/\
/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 $js = (< +// + + +ENDSCRIPT + + my ($lonhost_in_use,@hosts,%defaultdomconf,$saml_prefix,$saml_landing, + $samlssotext,$samlnonsso,$samlssoimg,$samlssoalt,$samlssourl,$samltooltip); + %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_'.$lonhost_in_use}; + } + if ($saml_landing) { + if ($samlssotext eq '') { + $samlssotext = 'SSO Login'; + } + if ($samlnonsso eq '') { + $samlnonsso = 'Non-SSO Login'; + } + $js .= <<"ENDSAMLJS"; + + + +ENDSAMLJS + } + +# --------------------------------------------------- Print login screen header + + my %add_entries = ( + bgcolor => "$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 .= '
' if $forgotpw; + my $loginhelp = &Apache::lonauth::loginhelpdisplay($authdomain); + if ($loginhelp) { + $loginhelp = ''.$lt{'help'}.'
'; + } + +# ---------------------------------------------------- Serve out DES JavaScript + { + my $jsh=Apache::File->new($include."/londes.js"); + $r->print(<$jsh>); + } +# ---------------------------------------------------------- Serve rest of page + + $r->print( + '
' +); + + $r->print(< + + + + + + + + +ENDSERVERFORM + my $coursecatalog; + if (($showcoursecat eq '') || ($showcoursecat)) { + $coursecatalog = &coursecatalog_link($lt{'catalog'}).'
'; + } + my $newuserlink; + if ($shownewuserlink) { + $newuserlink = &newuser_link($lt{'newuser'}).'
'; + } + my $logintitle = + '

' + .$lt{'log'} + .'

'; + + my $noscript_warning=''; + my $helpdeskscript; + my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail, + $authdomain,\$helpdeskscript, + $showhelpdesk,\@possdoms); + + my $mobileargs; + if ($clientmobile) { + $mobileargs = 'autocapitalize="off" autocorrect="off"'; + } + my $loginform=(< + + + :
+
+ :
+
+ :
+
+ + +LFORM + + if ($showbanner) { + my $alttext = &Apache::loncommon::designparm('login.alttext_img',$domain); + if ($alttext eq '') { + $alttext = 'The Learning Online Network with CAPA'; + } + $r->print(< +
+ $alttext +
+HEADER + } + + my $stdauthformstyle = 'inline-block'; + my $ssoauthstyle = 'none'; + my $logintype; + $r->print('
'); + if ($saml_landing) { + $ssoauthstyle = 'inline-block'; + $stdauthformstyle = 'none'; + $logintype = $samlssotext; + my $ssologin = '/adm/sso'; + if ($samlssourl ne '') { + $ssologin = $samlssourl; + } + if (($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=~/\?/)?'&':'?') . $querystring; + } + } elsif ($logtoken ne '') { + $ssologin .= (($ssologin=~/\?/)?'&':'?') . 'logtoken='.$logtoken; + } + my $ssohref; + if ($samlssoimg ne '') { + $ssohref = ''. + ''.$samlssoalt.''; + } else { + $ssohref = ''.$samlssotext.''; + } + if (($env{'form.saml'} eq 'no') || + (($env{'form.username'} ne '') && ($env{'form.domain'} ne ''))) { + $ssoauthstyle = 'none'; + $stdauthformstyle = 'inline-block'; + $logintype = $samlnonsso; + } + $r->print(< +Log-in type: +$logintype
+$lt{'change'} +

+
+
+$ssohref +$noscript_warning +
+
+$loginhelp +$contactblock +$coursecatalog +
+
+ENDSAML + } else { + if ($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 = < +// + +ENDJS + } + } + + $r->print(< +
+ $logintitle + $loginform + $noscript_warning +
+ +
+ $loginhelp + $forgotpw + $contactblock + $newuserlink + $coursecatalog +
+
+ +ENDLOGIN + $r->print('
'."\n"); + if ($showmainlogo) { + my $alttext = &Apache::loncommon::designparm('login.alttext_logo',$domain); + $r->print(' '."\n"); + } +$r->print(< +
+ENDTOP + my ($domainrow,$serverrow,$loadrow,$userloadrow,$versionrow); + $domainrow = <<"END"; + + + $lt{'dom'}:  + + +  $domain + + +END + $serverrow = <<"END"; + + + $lt{'serv'}:  + + +  $lonhost ($role) + + +END + if ($loadlim) { + $loadrow = <<"END"; + + + $lt{'load'}:  + + +  $loadpercent $lt{'perc'} + + +END + } + if ($uloadlim) { + $userloadrow = <<"END"; + + + $lt{'userload'}:  + + +  $userloadpercent $lt{'perc'} + + +END + } + if (($version ne '') && ($version ne '')) { + $versionrow = <<"END"; + + + $version + + +END + } + + $r->print(< + +$domainrow +$serverrow +$loadrow +$userloadrow +$versionrow +
+
+
+ $domainlogo +
+
+ + +$in_frame_js + +$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'} = $env{'form.linkprot'}; + if ($env{'form.linkprotuser'}) { + $link_info{'linkprotuser'} = $env{'form.linkprotuser'}; + } + $args->{'only_body'} = 1; + } elsif ($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]; + 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 .= $$lt{'servadm'}.':
'. + ''.$servadm.'
'; + } + if ($showhelpdesk) { + $contactblock .= ''.$lt->{'helpdesk'}.'
'; + my $thisurl = &escape('/adm/login'); + $$helpdeskscript = <<"ENDSCRIPT"; + +ENDSCRIPT + } + return $contactblock; +} + +sub forgotpwdisplay { + my (%lt) = @_; + my $prompt_for_resetpw = 1; + if ($prompt_for_resetpw) { + return ''.$lt{'forgotpw'}.''; + } + return; +} + +sub coursecatalog_link { + my ($linkname) = @_; + return <<"END"; + $linkname +END +} + +sub newuser_link { + my ($linkname) = @_; + return ''.$linkname.''; +} + +sub decode_token { + my ($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__