version 1.3, 1999/12/16 20:30:55
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version 1.121.2.27, 2024/10/09 17:56:24
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# The LearningOnline Network |
# The LearningOnline Network |
# User Authentication Module |
# User Authentication Module |
# 5/21/99,5/22,5/25,5/26,5/27,5/29,6/2,6/11,6/14,6/15 |
# |
# 16/11,12/16 Gerd Kortemeyer |
# $Id$ |
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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::lonauth; |
package Apache::lonauth; |
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use strict; |
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use LONCAPA qw(:DEFAULT :match); |
use Apache::Constants qw(:common); |
use Apache::Constants qw(:common); |
use Apache::File; |
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use CGI qw(:standard); |
use CGI qw(:standard); |
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use Apache::loncommon(); |
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use Apache::lonnet; |
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use Apache::lonmenu(); |
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use Apache::createaccount; |
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use Fcntl qw(:flock); |
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use Apache::lonlocal; |
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use Apache::File(); |
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use HTML::Entities; |
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use Digest::MD5; |
use CGI::Cookie(); |
use CGI::Cookie(); |
use Apache::lonnet(); |
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# ------------------------------------------------------------ Successful login |
# ------------------------------------------------------------ Successful login |
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sub success { |
sub success { |
my ($r, $lowerurl, $username, $domain, $authhost) = @_; |
my ($r, $username, $domain, $authhost, $lowerurl, $extra_env, |
my $lonids=$r->dir_config('lonIDsDir'); |
$form,$cid,$expirepub) = @_; |
# See if old ID present, but overlooked |
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my $cookie; |
# ------------------------------------------------------------ Get cookie ready |
if ($cookie=<$lonids/$username\_*\_$domain\_$authhost.id>) { |
my $cookie = |
$cookie=~s/\.id//; |
&Apache::loncommon::init_user_environment($r, $username, $domain, |
$cookie=~s/$lonids\///; |
$authhost, $form, |
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{'extra_env' => $extra_env,}); |
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my $public=($username eq 'public' && $domain eq 'public'); |
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if ($public or $lowerurl eq 'noredirect') { return $cookie; } |
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# -------------------------------------------------------------------- Log this |
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my $ip = &Apache::lonnet::get_requestor_ip(); |
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&Apache::lonnet::log($domain,$username,$authhost, |
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"Login $ip"); |
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# ------------------------------------------------- Check for critical messages |
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my @what=&Apache::lonnet::dump('critical',$domain,$username); |
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if ($what[0]) { |
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if (($what[0] ne 'con_lost') && ($what[0]!~/^error\:/)) { |
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$lowerurl='/adm/email?critical=display'; |
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} |
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} |
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# ------------------------------------------------------------ Get cookies ready |
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my ($securecookie,$defaultcookie); |
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my $ssl = $r->subprocess_env('https'); |
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if ($ssl) { |
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$securecookie="lonSID=$cookie; path=/; HttpOnly; secure"; |
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my $lonidsdir=$r->dir_config('lonIDsDir'); |
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if (($lonidsdir) && (-e "$lonidsdir/$cookie.id")) { |
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my $linkname=substr(Digest::MD5::md5_hex(Digest::MD5::md5_hex(time(). {}. rand(). $$)), 0, 32).'_linked'; |
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if (-e "$lonidsdir/$linkname.id") { |
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unlink("$lonidsdir/$linkname.id"); |
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} |
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my $made_symlink = eval { symlink("$lonidsdir/$cookie.id", |
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"$lonidsdir/$linkname.id"); 1 }; |
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if ($made_symlink) { |
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$defaultcookie = "lonLinkID=$linkname; path=/; HttpOnly;"; |
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&Apache::lonnet::appenv({'user.linkedenv' => $linkname}); |
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} |
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} |
} else { |
} else { |
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$defaultcookie = "lonID=$cookie; path=/; HttpOnly;"; |
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} |
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# -------------------------------------------------------- Menu script and info |
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my $destination = $lowerurl; |
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if (defined($form->{role})) { |
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my $envkey = 'user.role.'.$form->{role}; |
my $now=time; |
my $now=time; |
$cookie="$username\_$now\_$domain\_$authhost"; |
my $then=$env{'user.login.time'}; |
my $userroles=Apache::lonnet::reply( |
my $refresh=$env{'user.refresh.time'}; |
"dump:$domain:$username:roles", |
my $update=$env{'user.update.time'}; |
$authhost); |
if (!$update) { |
$userroles=~s/&/\n/g; |
$update = $then; |
{ |
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my $idf=Apache::File->new(">$lonids/$cookie.id"); |
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print $idf "username=$username\n"; |
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print $idf "userdomain=$domain\n"; |
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print $idf "userhome=$authhost\n"; |
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print $idf "$userroles\n"; |
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} |
} |
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if (exists($env{$envkey})) { |
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my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus); |
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&Apache::lonnet::role_status($envkey,$update,$refresh,$now,\$role,\$where, |
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\$trolecode,\$tstatus,\$tstart,\$tend); |
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if ($tstatus eq 'is') { |
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$destination .= ($destination =~ /\?/) ? '&' : '?'; |
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my $newrole = &HTML::Entities::encode($form->{role},'"<>&'); |
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$destination .= 'selectrole=1&'.$newrole.'=1'; |
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} |
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} |
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} |
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if (defined($form->{symb})) { |
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my $destsymb = $form->{symb}; |
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my $encrypted; |
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if ($destsymb =~ m{^/enc/}) { |
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$encrypted = 1; |
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if ($cid) { |
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$destsymb = &Apache::lonenc::unencrypted($destsymb,$cid); |
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} |
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} |
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$destination .= ($destination =~ /\?/) ? '&' : '?'; |
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if ($destsymb =~ /___/) { |
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my ($map,$resid,$desturl)=split(/___/,$destsymb); |
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$desturl = &Apache::lonnet::clutter($desturl); |
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if ($encrypted) { |
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$desturl = &Apache::lonenc::encrypted($desturl,1,$cid); |
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$destsymb = $form->{symb}; |
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} |
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$desturl = &HTML::Entities::encode($desturl,'"<>&'); |
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$destsymb = &HTML::Entities::encode($destsymb,'"<>&'); |
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$destination .= 'destinationurl='.$desturl. |
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'&destsymb='.$destsymb; |
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} elsif (!$encrypted) { |
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$destsymb = &HTML::Entities::encode($destsymb,'"<>&'); |
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$destination .= 'destinationurl='.$destsymb; |
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} |
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} |
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if ($destination =~ m{^/adm/roles}) { |
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$destination .= ($destination =~ /\?/) ? '&' : '?'; |
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$destination .= 'source=login'; |
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} |
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my $windowinfo=&Apache::lonmenu::open($env{'browser.os'}); |
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if ($env{'environment.remote'} eq 'on') { |
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my $checkexempt; |
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if ($env{'user.loadbalexempt'} eq $r->dir_config('lonHostID')) { |
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if ($env{'user.loadbalcheck.time'} + 600 > time) { |
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$checkexempt = 1; |
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} |
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} |
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if ($env{'user.noloadbalance'} eq $r->dir_config('lonHostID')) { |
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$checkexempt = 1; |
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} |
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unless (($checkexempt) || |
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(($destination =~ m{^/adm/switchserver}) && (!$r->is_initial_req()))) { |
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my ($is_balancer,$otherserver) = |
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&Apache::lonnet::check_loadbalancing($env{'user.name'}, |
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$env{'user.domain'}); |
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if (($is_balancer) && ($otherserver ne '') && |
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($otherserver ne $r->dir_config('lonHostID'))) { |
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$env{'environment.remote'} = 'off'; |
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} |
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} |
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} |
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my $startupremote=&Apache::lonmenu::startupremote($destination); |
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my $remoteinfo=&Apache::lonmenu::load_remote_msg($lowerurl); |
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my $setflags=&Apache::lonmenu::setflags(); |
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my $maincall=&Apache::lonmenu::maincall(); |
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my $brcrum = [{'href' => '', |
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'text' => 'Successful Login'},]; |
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my $start_page=&Apache::loncommon::start_page('Successful Login', |
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$startupremote, |
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{'no_inline_link' => 1, |
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'bread_crumbs' => $brcrum,}); |
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my $end_page =&Apache::loncommon::end_page(); |
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my $continuelink; |
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if ($env{'environment.remote'} eq 'off') { |
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$continuelink='<a href="'.$destination.'">'.&mt('Continue').'</a>'; |
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} |
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# ------------------------------------------------- Output for successful login |
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&Apache::loncommon::content_type($r,'text/html'); |
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if ($securecookie) { |
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$r->headers_out->add('Set-cookie' => $securecookie); |
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} |
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if ($defaultcookie) { |
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$r->headers_out->add('Set-cookie' => $defaultcookie); |
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} |
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if ($expirepub) { |
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my $c = new CGI::Cookie(-name => 'lonPubID', |
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-value => '', |
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-expires => '-10y',); |
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$r->headers_out->add('Set-cookie' => $c); |
} |
} |
$cookie="lonID=$cookie; path=/"; |
$r->send_http_header; |
$r->send_cgi_header(<<ENDHEADER); |
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Content-type: text/html |
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Set-cookie: $cookie |
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ENDHEADER |
my %lt=&Apache::lonlocal::texthash( |
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'wel' => 'Welcome', |
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'pro' => 'Login problems?', |
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); |
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my $loginhelp = &loginhelpdisplay($domain); |
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if ($loginhelp) { |
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$loginhelp = '<p><a href="'.$loginhelp.'">'.$lt{'pro'}.'</a></p>'; |
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} |
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my $welcome = &mt('Welcome to the Learning[_1]Online[_2] Network with CAPA. Please wait while your session is being set up.','<i>','</i>'); |
$r->print(<<ENDSUCCESS); |
$r->print(<<ENDSUCCESS); |
<html> |
$start_page |
<head> |
$setflags |
<title>Successful Login to the LearningOnline Network</title> |
$windowinfo |
</head> |
<h1>$lt{'wel'}</h1> |
<frameset rows="80,*" border=0> |
$welcome |
<frame scrolling="no" name="loncontrol" src="/adm/menu"> |
$loginhelp |
<frame name="loncontent" src="$lowerurl"> |
$remoteinfo |
</frameset> |
$maincall |
</html> |
$continuelink |
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$end_page |
ENDSUCCESS |
ENDSUCCESS |
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return; |
} |
} |
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# --------------------------------------------------------------- Failed login! |
# --------------------------------------------------------------- Failed login! |
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sub failed { |
sub failed { |
my ($r,$message) = @_; |
my ($r,$message,$form,$authhost) = @_; |
$r->send_cgi_header(<<ENDFHEADER); |
(undef,undef,undef,my $clientmathml,my $clientunicode) = |
Content-type: text/html |
&Apache::loncommon::decode_user_agent(); |
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my $args = {}; |
ENDFHEADER |
if ($clientunicode && !$clientmathml) { |
$r->print(<<ENDFAILED); |
$args = {'browser.unicode' => 1}; |
<html> |
} |
<head> |
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<title>Unsuccessful Login to the LearningOnline Network</title> |
my $start_page = &Apache::loncommon::start_page('Unsuccessful Login',undef,$args); |
</head> |
my $uname = &Apache::loncommon::cleanup_html($form->{'uname'}); |
<html> |
my $udom = &Apache::loncommon::cleanup_html($form->{'udom'}); |
<body bgcolor="#FFFFFF"> |
if (&Apache::lonnet::domain($udom,'description') eq '') { |
<h1>Sorry ...</h1> |
undef($udom); |
<h2>$message to use the Learning<i>Online</i> Network</h2> |
} |
</body> |
my $retry = '/adm/login'; |
</html> |
if ($uname eq $form->{'uname'}) { |
ENDFAILED |
$retry .= '?username='.$uname; |
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} |
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if ($udom) { |
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$retry .= (($retry=~/\?/)?'&':'?').'domain='.$udom; |
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} |
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my $lonhost = $r->dir_config('lonHostID'); |
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my $querystr; |
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my $result = &set_retry_token($form,$lonhost,\$querystr); |
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if ($result eq 'fail') { |
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if (exists($form->{role})) { |
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my $role = &Apache::loncommon::cleanup_html($form->{role}); |
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if ($role ne '') { |
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$retry .= (($retry=~/\?/)?'&':'?').'role='.$role; |
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} |
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} |
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if (exists($form->{symb})) { |
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my $symb = &Apache::loncommon::cleanup_html($form->{symb}); |
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if ($symb ne '') { |
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$retry .= (($retry=~/\?/)?'&':'?').'symb='.$symb; |
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} |
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} |
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if (exists($form->{firsturl})) { |
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my $firsturl = &Apache::loncommon::cleanup_html($form->{firsturl}); |
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if ($firsturl ne '') { |
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$retry .= (($retry=~/\?/)?'&':'?').'firsturl='.$firsturl; |
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} |
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} |
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} elsif ($querystr ne '') { |
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$retry .= (($retry=~/\?/)?'&':'?').$querystr; |
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} |
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my $end_page = &Apache::loncommon::end_page(); |
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&Apache::loncommon::content_type($r,'text/html'); |
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$r->send_http_header; |
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my @actions = |
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(&mt('Please [_1]log in again[_2].','<a href="'.$retry.'">','</a>')); |
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my $loginhelp = &loginhelpdisplay($udom); |
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if ($loginhelp) { |
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push(@actions, '<a href="'.$loginhelp.'">'.&mt('Login problems?').'</a>'); |
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} |
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#FIXME: link to helpdesk might be added here |
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$r->print( |
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$start_page |
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.'<h2>'.&mt('Sorry ...').'</h2>' |
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.&Apache::lonhtmlcommon::confirm_success(&mt($message),1).'<br /><br />' |
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.&Apache::lonhtmlcommon::actionbox(\@actions) |
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.$end_page |
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); |
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} |
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# ------------------------------------------------------------------ Rerouting! |
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sub reroute { |
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my ($r) = @_; |
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&Apache::loncommon::content_type($r,'text/html'); |
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$r->send_http_header; |
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my $msg='<b>'.&mt('Sorry ...').'</b><br />' |
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.&mt('Please [_1]log in again[_2].'); |
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&Apache::loncommon::simple_error_page($r,'Rerouting',$msg,{'no_auto_mt_msg' => 1}); |
} |
} |
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# ---------------------------------------------------------------- Main handler |
# ---------------------------------------------------------------- Main handler |
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sub handler { |
sub handler { |
my $r = shift; |
my $r = shift; |
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my $londocroot = $r->dir_config('lonDocRoot'); |
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# Are we re-routing? |
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if (-e "$londocroot/lon-status/reroute.txt") { |
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&reroute($r); |
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return OK; |
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} |
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my $buffer; |
&Apache::lonlocal::get_language_handle($r); |
$r->read($buffer,$r->header_in('Content-length')); |
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my @pairs=split(/&/,$buffer); |
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my $pair; my $name; my $value; my %FORM; |
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foreach $pair (@pairs) { |
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($name,$value) = split(/=/,$pair); |
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$FORM{$name}=$value; |
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} |
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if ((!$FORM{'uname'}) || (!$FORM{'upass'}) || (!$FORM{'udom'})) { |
# -------------------------------- Prevent users from attempting to login twice |
failed($r,'Username, password and domain need to be specified'); |
my $handle = &Apache::lonnet::check_for_valid_session($r); |
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if ($handle ne '') { |
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my $lonidsdir=$r->dir_config('lonIDsDir'); |
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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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} else { |
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# Indeed, a valid token is found |
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&Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle); |
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&Apache::loncommon::content_type($r,'text/html'); |
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$r->send_http_header; |
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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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my $dest = '/adm/roles'; |
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my %form = &get_form_items($r); |
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if ($form{'logtoken'}) { |
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my $tmpinfo = &Apache::lonnet::reply('tmpget:'.$form{'logtoken'}, |
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$form{'serverid'}); |
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unless (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost') || |
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($tmpinfo eq 'no_such_host')) { |
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my ($des_key,$firsturl,@rest)=split(/&/,$tmpinfo); |
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$firsturl = &unescape($firsturl); |
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my %info; |
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foreach my $item (@rest) { |
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my ($key,$value) = split(/=/,$item); |
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$info{$key} = &unescape($value); |
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} |
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if ($firsturl ne '') { |
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$info{'firsturl'} = $firsturl; |
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$dest = $firsturl; |
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} |
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} |
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} |
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$r->print( |
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$start_page |
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.'<p class="LC_warning">'.&mt('You are already logged in!').'</p>' |
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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="'.$dest.'">','</a>','<a href="/adm/logout">','</a>') |
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.'</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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} |
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|
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# ---------------------------------------------------- No valid token, continue |
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|
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my %form = &get_form_items($r); |
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if ((!$form{'uname'}) || (!$form{'upass0'}) || (!$form{'udom'})) { |
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&failed($r,'Username, password and domain need to be specified.', |
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\%form); |
return OK; |
return OK; |
} |
} |
$FORM{'uname'} =~ s/\W//g; |
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$FORM{'upass'} =~ s/\W//g; |
# split user logging in and "su"-user |
$FORM{'udom'} =~ s/\W//g; |
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($form{'uname'},$form{'suname'},$form{'sudom'})=split(/\:/,$form{'uname'}); |
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$form{'uname'} = &LONCAPA::clean_username($form{'uname'}); |
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$form{'suname'}= &LONCAPA::clean_username($form{'suname'}); |
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$form{'udom'} = &LONCAPA::clean_domain($form{'udom'}); |
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$form{'sudom'} = &LONCAPA::clean_domain($form{'sudom'}); |
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my $role = $r->dir_config('lonRole'); |
my $role = $r->dir_config('lonRole'); |
my $domain = $r->dir_config('lonDefDomain'); |
my $domain = $r->dir_config('lonDefDomain'); |
my $prodir = $r->dir_config('lonUsersDir'); |
my $prodir = $r->dir_config('lonUsersDir'); |
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my $contact_name = &mt('LON-CAPA helpdesk'); |
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|
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# ---------------------------------------- Get the information from login token |
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|
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my $tmpinfo=Apache::lonnet::reply('tmpget:'.$form{'logtoken'}, |
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$form{'serverid'}); |
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|
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if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost') || |
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($tmpinfo eq 'no_such_host')) { |
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&failed($r,'Information needed to verify your login information is missing, inaccessible or expired.',\%form); |
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return OK; |
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} else { |
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my $reply = &Apache::lonnet::reply('tmpdel:'.$form{'logtoken'}, |
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$form{'serverid'}); |
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if ( $reply ne 'ok' ) { |
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&failed($r,'Session could not be opened.',\%form); |
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&Apache::lonnet::logthis("ERROR got a reply of $reply when trying to contact ". $form{'serverid'}." to get login token"); |
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return OK; |
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} |
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} |
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|
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if (!&Apache::lonnet::domain($form{'udom'})) { |
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&failed($r,'The domain you provided is not a valid LON-CAPA domain.',\%form); |
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return OK; |
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} |
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|
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my ($des_key,$firsturl,@rest)=split(/&/,$tmpinfo); |
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$firsturl = &unescape($firsturl); |
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foreach my $item (@rest) { |
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my ($key,$value) = split(/=/,$item); |
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$form{$key} = &unescape($value); |
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} |
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my $upass = &Apache::loncommon::des_decrypt($des_key,$form{'upass0'}); |
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# ---------------------------------------------------------------- Authenticate |
# ---------------------------------------------------------------- Authenticate |
my $authhost=Apache::lonnet::authenticate($FORM{'uname'}, |
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$FORM{'upass'}, |
my %domconfig = &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'}); |
$FORM{'udom'}); |
my ($cancreate,$statustocreate) = |
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&Apache::createaccount::get_creation_controls($form{'udom'},$domconfig{'usercreation'}); |
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my $defaultauth; |
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if (ref($cancreate) eq 'ARRAY') { |
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if (grep(/^login$/,@{$cancreate})) { |
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$defaultauth = 1; |
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} |
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} |
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my $clientcancheckhost = 1; |
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my $authhost=Apache::lonnet::authenticate($form{'uname'},$upass, |
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$form{'udom'},$defaultauth, |
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$clientcancheckhost); |
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# --------------------------------------------------------------------- Failed? |
# --------------------------------------------------------------------- Failed? |
|
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if ($authhost eq 'no_host') { |
if ($authhost eq 'no_host') { |
failed($r,'Username and/or password could not be authenticated'); |
my $pwdverify; |
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if (&Apache::lonnet::homeserver($form{'uname'},$form{'udom'}) eq 'no_host') { |
|
my %possunames = &alternate_unames_check($form{'uname'},$form{'udom'}); |
|
if (keys(%possunames) > 0) { |
|
foreach my $rulematch (keys(%possunames)) { |
|
my $possuname = $possunames{$rulematch}; |
|
if (($possuname ne '') && ($possuname =~ /^$match_username$/)) { |
|
$authhost=Apache::lonnet::authenticate($possuname,$upass, |
|
$form{'udom'},undef, |
|
$clientcancheckhost); |
|
if (($authhost eq 'no_host') || ($authhost eq 'no_account_on_host')) { |
|
next; |
|
} elsif (($authhost ne '') && (&Apache::lonnet::hostname($authhost) ne '')) { |
|
$pwdverify = 1; |
|
&Apache::lonnet::logthis("Authenticated user: $possuname was submitted as: $form{'uname'}"); |
|
$form{'uname'} = $possuname; |
|
last; |
|
} |
|
} |
|
} |
|
} |
|
} |
|
unless ($pwdverify) { |
|
&failed($r,'Username and/or password could not be authenticated.', |
|
\%form); |
|
return OK; |
|
} |
|
} elsif ($authhost eq 'no_account_on_host') { |
|
if ($defaultauth) { |
|
my $domdesc = &Apache::lonnet::domain($form{'udom'},'description'); |
|
unless (&check_can_host($r,\%form,'no_account_on_host',$domdesc)) { |
|
return OK; |
|
} |
|
my $start_page = |
|
&Apache::loncommon::start_page('Create a user account in LON-CAPA', |
|
'',{'no_inline_link' => 1,}); |
|
my $lonhost = $r->dir_config('lonHostID'); |
|
my $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'}; |
|
my $contacts = |
|
&Apache::loncommon::build_recipient_list(undef,'helpdeskmail', |
|
$form{'udom'},$origmail); |
|
my ($contact_email) = split(',',$contacts); |
|
my $output = |
|
&Apache::createaccount::username_check($form{'uname'},$form{'udom'}, |
|
$domdesc,'',$lonhost, |
|
$contact_email,$contact_name, |
|
undef,$statustocreate); |
|
&Apache::loncommon::content_type($r,'text/html'); |
|
$r->send_http_header; |
|
&Apache::createaccount::print_header($r,$start_page); |
|
$r->print('<h3>'.&mt('Account creation').'</h3>'. |
|
&mt('Although your username and password were authenticated, you do not currently have a LON-CAPA account at this institution.').'<br />'. |
|
$output.&Apache::loncommon::end_page()); |
|
return OK; |
|
} else { |
|
&failed($r,'Although your username and password were authenticated, you do not currently have a LON-CAPA account in this domain, and you are not permitted to create one.',\%form); |
|
return OK; |
|
} |
|
} |
|
|
|
if (($firsturl eq '') || |
|
($firsturl=~/^\/adm\/(logout|remote)/)) { |
|
$firsturl='/adm/roles'; |
|
} |
|
|
|
my ($hosthere,%sessiondata); |
|
if ($form{'iptoken'}) { |
|
%sessiondata = &Apache::lonnet::tmpget($form{'iptoken'}); |
|
my $delete = &Apache::lonnet::tmpdel($form{'iptoken'}); |
|
if (($sessiondata{'domain'} eq $form{'udom'}) && |
|
($sessiondata{'username'} eq $form{'uname'})) { |
|
$hosthere = 1; |
|
} |
|
} |
|
|
|
# --------------------------------- Are we attempting to login as somebody else? |
|
if ($form{'suname'}) { |
|
my ($suname,$sudom,$sudomref); |
|
$suname = $form{'suname'}; |
|
$sudom = $form{'udom'}; |
|
if ($form{'sudom'}) { |
|
unless ($sudom eq $form{'sudom'}) { |
|
if (&Apache::lonnet::domain($form{'sudom'})) { |
|
$sudomref = [$form{'sudom'}]; |
|
$sudom = $form{'sudom'}; |
|
} |
|
} |
|
} |
|
# ------------ see if the original user has enough privileges to pull this stunt |
|
if (&Apache::lonnet::privileged($form{'uname'},$form{'udom'},$sudomref)) { |
|
# ---------------------------------------------------- see if the su-user exists |
|
unless (&Apache::lonnet::homeserver($suname,$sudom) eq 'no_host') { |
|
# ------------------------------ see if the su-user is not too highly privileged |
|
if (&Apache::lonnet::privileged($suname,$sudom)) { |
|
&Apache::lonnet::logthis('Attempted switch user to privileged user'); |
|
} else { |
|
my $noprivswitch; |
|
# |
|
# su-user's home server and user's home server must have one of: |
|
# (a) same domain |
|
# (b) same primary library server for the two domains |
|
# (c) same "internet domain" for primary library server(s) for home servers' domains |
|
# |
|
my $suprim = &Apache::lonnet::domain($sudom,'primary'); |
|
my $suintdom = &Apache::lonnet::internet_dom($suprim); |
|
unless ($sudom eq $form{'udom'}) { |
|
my $uprim = &Apache::lonnet::domain($form{'udom'},'primary'); |
|
my $uintdom = &Apache::lonnet::internet_dom($uprim); |
|
unless ($suprim eq $uprim) { |
|
unless ($suintdom eq $uintdom) { |
|
&Apache::lonnet::logthis('Attempted switch user ' |
|
.'to user with different "internet domain".'); |
|
$noprivswitch = 1; |
|
} |
|
} |
|
} |
|
|
|
unless ($noprivswitch) { |
|
# |
|
# server where log-in occurs must have same "internet domain" as su-user's home |
|
# server |
|
# |
|
my $lonhost = $r->dir_config('lonHostID'); |
|
my $hostintdom = &Apache::lonnet::internet_dom($lonhost); |
|
if ($hostintdom ne $suintdom) { |
|
&Apache::lonnet::logthis('Attempted switch user on a ' |
|
.'server with a different "internet domain".'); |
|
} else { |
|
|
|
# -------------------------------------------------------- actually switch users |
|
|
|
&Apache::lonnet::logperm('User '.$form{'uname'}.' at '. |
|
$form{'udom'}.' logging in as '.$suname.':'.$sudom); |
|
$form{'uname'}=$suname; |
|
if ($form{'udom'} ne $sudom) { |
|
$form{'udom'}=$sudom; |
|
} |
|
} |
|
} |
|
} |
|
} |
|
} else { |
|
&Apache::lonnet::logthis('Non-privileged user attempting switch user'); |
|
} |
|
} |
|
|
|
my ($is_balancer,$otherserver); |
|
|
|
unless ($hosthere) { |
|
($is_balancer,$otherserver) = |
|
&Apache::lonnet::check_loadbalancing($form{'uname'},$form{'udom'},'login'); |
|
if ($is_balancer) { |
|
# 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); |
|
if (($found_server) && ($balancer_cookie =~ /^\Q$env{'user.domain'}\E_\Q$env{'user.name'}\E_/)) { |
|
$otherserver = $found_server; |
|
} |
|
if ($otherserver eq '') { |
|
my $lowest_load; |
|
($otherserver,undef,undef,undef,$lowest_load) = &Apache::lonnet::choose_server($form{'udom'}); |
|
if ($lowest_load > 100) { |
|
$otherserver = &Apache::lonnet::spareserver($r,$lowest_load,$lowest_load,1,$form{'udom'}); |
|
} |
|
} |
|
if ($otherserver ne '') { |
|
my @hosts = &Apache::lonnet::current_machine_ids(); |
|
if (grep(/^\Q$otherserver\E$/,@hosts)) { |
|
$hosthere = $otherserver; |
|
} |
|
} |
|
} |
|
} |
|
|
|
if (($is_balancer) && (!$hosthere)) { |
|
if ($otherserver) { |
|
&success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef, |
|
\%form); |
|
my $switchto = '/adm/switchserver?otherserver='.$otherserver; |
|
if (($firsturl) && ($firsturl ne '/adm/switchserver') && ($firsturl ne '/adm/roles')) { |
|
$switchto .= '&origurl='.$firsturl; |
|
} |
|
if ($form{'role'}) { |
|
$switchto .= '&role='.$form{'role'}; |
|
} |
|
if ($form{'symb'}) { |
|
$switchto .= '&symb='.$form{'symb'}; |
|
} |
|
$r->internal_redirect($switchto); |
|
} else { |
|
&Apache::loncommon::content_type($r,'text/html'); |
|
$r->send_http_header; |
|
$r->print(&noswitch()); |
|
} |
return OK; |
return OK; |
|
} else { |
|
if (!&check_can_host($r,\%form,$authhost)) { |
|
my ($otherserver) = &Apache::lonnet::choose_server($form{'udom'}); |
|
if ($otherserver) { |
|
&success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef, |
|
\%form); |
|
my $switchto = '/adm/switchserver?otherserver='.$otherserver; |
|
if (($firsturl) && ($firsturl ne '/adm/switchserver') && ($firsturl ne '/adm/roles')) { |
|
$switchto .= '&origurl='.$firsturl; |
|
} |
|
if ($form{'role'}) { |
|
$switchto .= '&role='.$form{'role'}; |
|
} |
|
if ($form{'symb'}) { |
|
$switchto .= '&symb='.$form{'symb'}; |
|
} |
|
$r->internal_redirect($switchto); |
|
} else { |
|
&Apache::loncommon::content_type($r,'text/html'); |
|
$r->send_http_header; |
|
$r->print(&noswitch()); |
|
} |
|
return OK; |
|
} |
|
|
|
# ------------------------------------------------------- Do the load balancing |
|
|
|
# ---------------------------------------------------------- Determine own load |
|
my $loadlim = $r->dir_config('lonLoadLim'); |
|
my $loadavg; |
|
{ |
|
my $loadfile=Apache::File->new('/proc/loadavg'); |
|
$loadavg=<$loadfile>; |
|
} |
|
$loadavg =~ s/\s.*//g; |
|
my $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim); |
|
my $userloadpercent=&Apache::lonnet::userload(); |
|
|
|
# ---------------------------------------------------------- Are we overloaded? |
|
if ((($userloadpercent>100.0)||($loadpercent>100.0))) { |
|
my $unloaded=Apache::lonnet::spareserver($r,$loadpercent,$userloadpercent,1,$form{'udom'}); |
|
if (!$unloaded) { |
|
($unloaded) = &Apache::lonnet::choose_server($form{'udom'}); |
|
} |
|
if ($unloaded) { |
|
&success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect', |
|
undef,\%form); |
|
$r->internal_redirect('/adm/switchserver?otherserver='.$unloaded.'&origurl='.$firsturl); |
|
return OK; |
|
} |
|
} |
|
if (($is_balancer) && ($hosthere)) { |
|
$form{'noloadbalance'} = $hosthere; |
|
} |
|
my $extra_env; |
|
if (($hosthere) && ($sessiondata{'sessionserver'} ne '')) { |
|
if ($sessiondata{'origurl'} ne '') { |
|
$firsturl = $sessiondata{'origurl'}; |
|
$form{'firsturl'} = $sessiondata{'origurl'}; |
|
my @names = ('role','symb','linkprot','linkkey'); |
|
foreach my $item (@names) { |
|
if ($sessiondata{$item} ne '') { |
|
$form{$item} = $sessiondata{$item}; |
|
} |
|
} |
|
} |
|
} |
|
&success($r,$form{'uname'},$form{'udom'},$authhost,$firsturl,undef, |
|
\%form); |
|
return OK; |
|
} |
|
} |
|
|
|
sub get_form_items { |
|
my ($r) = @_; |
|
my $buffer; |
|
if ($r->header_in('Content-length') > 0) { |
|
$r->read($buffer,$r->header_in('Content-length'),0); |
|
} |
|
my %form; |
|
foreach my $pair (split(/&/,$buffer)) { |
|
my ($name,$value) = split(/=/,$pair); |
|
$value =~ tr/+/ /; |
|
$value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg; |
|
$form{$name}=$value; |
|
} |
|
return %form; |
|
} |
|
|
|
sub set_retry_token { |
|
my ($form,$lonhost,$querystr) = @_; |
|
if (ref($form) eq 'HASH') { |
|
my ($firsturl,$token,$extras,@names); |
|
@names = ('role','symb','iptoken'); |
|
foreach my $name (@names) { |
|
if ($form->{$name} ne '') { |
|
$extras .= '&'.$name.'='.&escape($form->{$name}); |
|
last if ($name eq 'linkprot'); |
|
} |
|
} |
|
my $firsturl = $form->{'firsturl'}; |
|
if (($firsturl ne '') || ($extras ne '')) { |
|
$extras .= ':retry'; |
|
$token = &Apache::lonnet::reply('tmpput:'.&escape($firsturl). |
|
$extras,$lonhost); |
|
if (($token eq 'con_lost') || ($token eq 'no_such_host')) { |
|
return 'fail'; |
|
} else { |
|
if (ref($querystr)) { |
|
$$querystr = 'retry='.$token; |
|
} |
|
return 'ok'; |
|
} |
|
} |
|
} |
|
return; |
|
} |
|
|
|
sub check_can_host { |
|
my ($r,$form,$authhost,$domdesc) = @_; |
|
return unless (ref($form) eq 'HASH'); |
|
my $canhost = 1; |
|
my $lonhost = $r->dir_config('lonHostID'); |
|
my $udom = $form->{'udom'}; |
|
my @intdoms; |
|
my $internet_names = &Apache::lonnet::get_internet_names($lonhost); |
|
if (ref($internet_names) eq 'ARRAY') { |
|
@intdoms = @{$internet_names}; |
|
} |
|
my $uprimary_id = &Apache::lonnet::domain($udom,'primary'); |
|
my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id); |
|
unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) { |
|
my $machine_dom = &Apache::lonnet::host_domain($lonhost); |
|
my $hostname = &Apache::lonnet::hostname($lonhost); |
|
my $serverhomeID = &Apache::lonnet::get_server_homeID($hostname); |
|
my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID); |
|
my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom); |
|
my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom); |
|
my $loncaparev; |
|
if ($authhost eq 'no_account_on_host') { |
|
$loncaparev = &Apache::lonnet::get_server_loncaparev($machine_dom); |
|
} else { |
|
$loncaparev = &Apache::lonnet::get_server_loncaparev($machine_dom,$lonhost); |
|
} |
|
$canhost = &Apache::lonnet::can_host_session($udom,$lonhost,$loncaparev, |
|
$udomdefaults{'remotesessions'}, |
|
$defdomdefaults{'hostedsessions'}); |
|
} |
|
unless ($canhost) { |
|
if ($authhost eq 'no_account_on_host') { |
|
my $checkloginvia = 1; |
|
my ($login_host,$hostname) = |
|
&Apache::lonnet::choose_server($udom,$checkloginvia); |
|
&Apache::loncommon::content_type($r,'text/html'); |
|
$r->send_http_header; |
|
if ($login_host ne '') { |
|
my $protocol = $Apache::lonnet::protocol{$login_host}; |
|
$protocol = 'http' if ($protocol ne 'https'); |
|
my $alias = &Apache::lonnet::use_proxy_alias($r,$login_host); |
|
$hostname = $alias if ($alias ne ''); |
|
my $newurl = $protocol.'://'.$hostname.'/adm/createaccount'; |
|
$r->print(&Apache::loncommon::start_page('Create a user account in LON-CAPA'). |
|
'<h3>'.&mt('Account creation').'</h3>'. |
|
&mt('You do not currently have a LON-CAPA account at this institution.').'<br />'. |
|
'<p>'.&mt('You will be able to create one by logging into a LON-CAPA server within the [_1] domain.',$domdesc).'</p>'. |
|
'<p>'.&mt('[_1]Log in[_2]','<a href="'.$newurl.'">','</a>'). |
|
&Apache::loncommon::end_page()); |
|
} else { |
|
$r->print(&Apache::loncommon::start_page('Access to LON-CAPA unavailable'). |
|
'<h3>'.&mt('Account creation unavailable').'</h3>'. |
|
&mt('You do not currently have a LON-CAPA account at this institution.').'<br />'. |
|
'<p>'.&mt('Currently a LON-CAPA server is not available within the [_1] domain for you to log-in to, to create an account.',$domdesc).'</p>'. |
|
&Apache::loncommon::end_page()); |
|
} |
|
} else { |
|
&success($r,$form->{'uname'},$udom,$authhost,'noredirect',undef, |
|
$form); |
|
my ($otherserver) = &Apache::lonnet::choose_server($udom); |
|
$r->internal_redirect('/adm/switchserver?otherserver='.$otherserver); |
|
} |
} |
} |
|
return $canhost; |
|
} |
|
|
my %cookies=CGI::Cookie->parse($r->header_in('Cookie')); |
sub noswitch { |
my $lonurl=$cookies{'lonURL'}; |
my $result = &Apache::loncommon::start_page('Access to LON-CAPA unavailable'). |
if (!$lonurl) { failed($r,'Cookies need to be activated'); return OK; } |
'<h3>'.&mt('Session unavailable').'</h3>'. |
my $lowerurl=$lonurl->value; |
&mt('This LON-CAPA server is unable to host your session.').'<br />'. |
|
'<p>'.&mt('Currently no other LON-CAPA server is available to host your session either.').'</p>'. |
|
&Apache::loncommon::end_page(); |
|
return $result; |
|
} |
|
|
success($r,$lowerurl,$FORM{'uname'},$FORM{'udom'},$authhost); |
sub loginhelpdisplay { |
return OK; |
my ($authdomain) = @_; |
|
my $login_help = 1; |
|
my $lang = &Apache::lonlocal::current_language(); |
|
if ($login_help) { |
|
my $dom = $authdomain; |
|
if ($dom eq '') { |
|
$dom = &Apache::lonnet::default_login_domain(); |
|
} |
|
my %domconfhash = &Apache::loncommon::get_domainconf($dom); |
|
my $loginhelp_url; |
|
if ($lang) { |
|
$loginhelp_url = $domconfhash{$dom.'.login.helpurl_'.$lang}; |
|
if ($loginhelp_url ne '') { |
|
return $loginhelp_url; |
|
} |
|
} |
|
$loginhelp_url = $domconfhash{$dom.'.login.helpurl_nolang'}; |
|
if ($loginhelp_url ne '') { |
|
return $loginhelp_url; |
|
} else { |
|
return '/adm/loginproblems.html'; |
|
} |
|
} |
|
return; |
|
} |
|
|
|
sub alternate_unames_check { |
|
my ($uname,$udom) = @_; |
|
my %possunames; |
|
my %domdefs = &Apache::lonnet::get_domain_defaults($udom); |
|
if (ref($domdefs{'unamemap_rule'}) eq 'ARRAY') { |
|
if (@{$domdefs{'unamemap_rule'}} > 0) { |
|
%possunames = |
|
&Apache::lonnet::inst_rulecheck($udom,$uname,undef, |
|
'unamemap',$domdefs{'unamemap_rule'}); |
|
} |
|
} |
|
return %possunames; |
} |
} |
|
|
1; |
1; |
__END__ |
__END__ |
|
|
|
|