version 1.2, 1999/11/16 19:14:15
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version 1.145, 2017/08/08 17:01:25
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# The LearningOnline Network |
# The LearningOnline Network
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# User Authentication Module |
# User Authentication Module
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# 5/21/99,5/22,5/25,5/26,5/27,5/29,6/2,6/11,6/14,6/15 |
#
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# 16/11 Gerd Kortemeyer |
# $Id$
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#
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package Apache::lonauth; |
# Copyright Michigan State University Board of Trustees
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#
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use Apache::Constants qw(:common); |
# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
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use Apache::File; |
#
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use CGI qw(:standard); |
# LON-CAPA is free software; you can redistribute it and/or modify
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use CGI::Cookie(); |
# it under the terms of the GNU General Public License as published by
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use Apache::lonnet(); |
# 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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# ------------------------------------------------------------ Successful login |
#
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# LON-CAPA is distributed in the hope that it will be useful,
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sub success { |
# but WITHOUT ANY WARRANTY; without even the implied warranty of
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my ($r, $lowerurl, $username, $domain, $authhost) = @_; |
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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my $lonids=$r->dir_config('lonIDsDir'); |
# GNU General Public License for more details.
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# See if old ID present, but overlooked |
#
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my $cookie; |
# You should have received a copy of the GNU General Public License
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if ($cookie=<$lonids/$username\_*\_$domain\_$authhost.id>) { |
# along with LON-CAPA; if not, write to the Free Software
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$cookie=~s/\.id//; |
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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$cookie=~s/$lonids\///; |
#
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} else { |
# /home/httpd/html/adm/gpl.txt
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my $now=time; |
#
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$cookie="$username\_$now\_$domain\_$authhost"; |
# http://www.lon-capa.org/
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{ |
#
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my $idf=Apache::File->new(">$lonids/$cookie.id"); |
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print $idf "username=$username\n"; |
package Apache::lonauth;
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print $idf "userdomain=$domain\n"; |
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print $idf "userhome=$authhost\n"; |
use strict;
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} |
use LONCAPA qw(:DEFAULT :match);
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} |
use Apache::Constants qw(:common);
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$cookie="lonID=$cookie; path=/"; |
use CGI qw(:standard);
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$r->send_cgi_header(<<ENDHEADER); |
use Apache::loncommon();
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Content-type: text/html |
use Apache::lonnet;
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Set-cookie: $cookie |
use Apache::lonmenu();
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use Apache::createaccount;
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ENDHEADER |
use Fcntl qw(:flock);
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$r->print(<<ENDSUCCESS); |
use Apache::lonlocal;
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<html> |
use Apache::File();
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<head> |
use HTML::Entities;
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<title>Successful Login to the LearningOnline Network</title> |
use Digest::MD5;
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</head> |
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<frameset rows="80,*" border=0> |
# ------------------------------------------------------------ Successful login
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<frame scrolling="no" name="loncontrol" src="/adm/menu"> |
sub success {
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<frame name="loncontent" src="$lowerurl"> |
my ($r, $username, $domain, $authhost, $lowerurl, $extra_env,
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</frameset> |
$form) = @_;
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</html> |
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ENDSUCCESS |
# ------------------------------------------------------------ Get cookie ready
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} |
my $cookie =
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&Apache::loncommon::init_user_environment($r, $username, $domain,
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# --------------------------------------------------------------- Failed login! |
$authhost, $form,
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{'extra_env' => $extra_env,});
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sub failed { |
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my ($r,$message) = @_; |
my $public=($username eq 'public' && $domain eq 'public');
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$r->send_cgi_header(<<ENDFHEADER); |
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Content-type: text/html |
if ($public or $lowerurl eq 'noredirect') { return $cookie; }
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ENDFHEADER |
# -------------------------------------------------------------------- Log this
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$r->print(<<ENDFAILED); |
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<html> |
&Apache::lonnet::log($domain,$username,$authhost,
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<head> |
"Login $ENV{'REMOTE_ADDR'}");
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<title>Unsuccessful Login to the LearningOnline Network</title> |
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</head> |
# ------------------------------------------------- Check for critical messages
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<html> |
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<body bgcolor="#FFFFFF"> |
my @what=&Apache::lonnet::dump('critical',$domain,$username);
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<h1>Sorry ...</h1> |
if ($what[0]) {
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<h2>$message to use the Learning<i>Online</i> Network</h2> |
if (($what[0] ne 'con_lost') && ($what[0]!~/^error\:/)) {
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</body> |
$lowerurl='/adm/email?critical=display';
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</html> |
}
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ENDFAILED |
}
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} |
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# ----------------------------------------------------------- Get cookies ready
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# ---------------------------------------------------------------- Main handler |
my ($securecookie,$defaultcookie);
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if ($ENV{'SERVER_PORT'} == 443) {
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sub handler { |
$securecookie="lonID=$cookie; path=/; HttpOnly; secure";
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my $r = shift; |
my $lonidsdir=$r->dir_config('lonIDsDir');
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if (($lonidsdir) && (-e "$lonidsdir/$cookie.id")) {
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my $buffer; |
my $linkname=substr(Digest::MD5::md5_hex(Digest::MD5::md5_hex(time(). {}. rand(). $$)), 0, 32).'_linked';
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$r->read($buffer,$r->header_in('Content-length')); |
if (-e "$lonidsdir/$linkname.id") {
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my @pairs=split(/&/,$buffer); |
unlink("$lonidsdir/$linkname.id");
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my $pair; my $name; my $value; my %FORM; |
}
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foreach $pair (@pairs) { |
my $made_symlink = eval { symlink("$lonidsdir/$cookie.id",
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($name,$value) = split(/=/,$pair); |
"$lonidsdir/$linkname.id"); 1 };
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$FORM{$name}=$value; |
if ($made_symlink) {
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} |
$defaultcookie = "lonLinkID=$linkname; path=/; HttpOnly;";
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&Apache::lonnet::appenv({'user.linkedenv' => "$lonidsdir/$linkname.id"});
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if ((!$FORM{'uname'}) || (!$FORM{'upass'}) || (!$FORM{'udom'})) { |
}
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failed($r,'Username, password and domain need to be specified'); |
}
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return OK; |
} else {
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} |
$defaultcookie = "lonID=$cookie; path=/; HttpOnly;";
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$FORM{'uname'} =~ s/\W//g; |
}
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$FORM{'upass'} =~ s/\W//g; |
# -------------------------------------------------------- Menu script and info
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$FORM{'udom'} =~ s/\W//g; |
my $destination = $lowerurl;
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my $role = $r->dir_config('lonRole'); |
if (defined($form->{role})) {
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my $domain = $r->dir_config('lonDefDomain'); |
my $envkey = 'user.role.'.$form->{role};
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my $prodir = $r->dir_config('lonUsersDir'); |
my $now=time;
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my $then=$env{'user.login.time'};
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# ---------------------------------------------------------------- Authenticate |
my $refresh=$env{'user.refresh.time'};
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my $authhost=Apache::lonnet::authenticate($FORM{'uname'}, |
my $update=$env{'user.update.time'};
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$FORM{'upass'}, |
if (!$update) {
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$FORM{'udom'}); |
$update = $then;
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}
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# --------------------------------------------------------------------- Failed? |
if (exists($env{$envkey})) {
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my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus);
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if ($authhost eq 'no_host') { |
&Apache::lonnet::role_status($envkey,$update,$refresh,$now,\$role,\$where,
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failed($r,'Username and/or password could not be authenticated'); |
\$trolecode,\$tstatus,\$tstart,\$tend);
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return OK; |
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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my %cookies=CGI::Cookie->parse($r->header_in('Cookie')); |
$destination .= 'selectrole=1&'.$newrole.'=1';
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my $lonurl=$cookies{'lonURL'}; |
}
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if (!$lonurl) { failed($r,'Cookies need to be activated'); return OK; } |
}
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my $lowerurl=$lonurl->value; |
}
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if (defined($form->{symb})) {
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success($r,$lowerurl,$FORM{'uname'},$FORM{'udom'},$authhost); |
my $destsymb = $form->{symb};
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return OK; |
$destination .= ($destination =~ /\?/) ? '&' : '?';
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} |
if ($destsymb =~ /___/) {
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# FIXME Need to deal with encrypted symbs and urls as needed.
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1; |
my ($map,$resid,$desturl)=split(/___/,$destsymb);
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__END__ |
$desturl = &Apache::lonnet::clutter($desturl);
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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='.$destsymb;
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} else {
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$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::lonhtmlcommon::scripttag('self.name="loncapaclient";');
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my $header = '<meta HTTP-EQUIV="Refresh" CONTENT="0; url='.$destination.'" />';
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my $brcrum = [{'href' => '',
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'text' => 'Successful Login'},];
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my $args = {'bread_crumbs' => $brcrum,};
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unless ((defined($form->{role})) || (defined($form->{symb}))) {
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my $update=$env{'user.update.time'};
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if (!$update) {
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$update = $env{'user.login.time'};
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}
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my %roles_in_env;
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my $showcount = &Apache::lonroles::roles_from_env(\%roles_in_env,$update);
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if ($showcount == 1) {
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foreach my $rolecode (keys(%roles_in_env)) {
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my ($cid) = ($rolecode =~ m{^\Quser.role.st./\E($match_domain/$match_courseid)(?:/|$)});
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if ($cid) {
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my %coursedescription =
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&Apache::lonnet::coursedescription($cid,{'one_time' => '1'});
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if ($coursedescription{'type'} eq 'Placement') {
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$args->{'crstype'} = 'Placement';
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}
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last;
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}
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}
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}
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}
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my $start_page=&Apache::loncommon::start_page('Successful Login',
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$header,$args);
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my $end_page =&Apache::loncommon::end_page();
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my $continuelink='<a href="'.$destination.'">'.&mt('Continue').'</a>';
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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' => $defaultcookie);
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}
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$r->send_http_header;
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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 $welcome = &mt('Welcome to the Learning[_1]Online[_2] Network with CAPA. Please wait while your session is being set up.','<i>','</i>');
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$r->print(<<ENDSUCCESS);
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$start_page
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$windowinfo
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<h1>$lt{'wel'}</h1>
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$welcome
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$loginhelp
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$continuelink
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$end_page
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ENDSUCCESS
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return;
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}
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# --------------------------------------------------------------- Failed login!
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sub failed {
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my ($r,$message,$form) = @_;
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(undef,undef,undef,my $clientmathml,my $clientunicode) =
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&Apache::loncommon::decode_user_agent();
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my $args = {};
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if ($clientunicode && !$clientmathml) {
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$args = {'browser.unicode' => 1};
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}
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my $start_page = &Apache::loncommon::start_page('Unsuccessful Login',undef,$args);
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my $uname = &Apache::loncommon::cleanup_html($form->{'uname'});
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my $udom = &Apache::loncommon::cleanup_html($form->{'udom'});
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if (&Apache::lonnet::domain($udom,'description') eq '') {
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undef($udom);
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}
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my $retry = '/adm/login';
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if ($uname eq $form->{'uname'}) {
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$retry .= '?username='.$uname;
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}
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if ($udom) {
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$retry .= (($retry=~/\?/)?'&':'?').'domain='.$udom;
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}
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if (exists($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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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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}
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# ---------------------------------------------------------------- Main handler
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sub handler {
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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($r);
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return OK;
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}
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&Apache::lonlocal::get_language_handle($r);
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# -------------------------------- Prevent users from attempting to login twice
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my $handle = &Apache::lonnet::check_for_valid_session($r);
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if ($handle 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 $dest = '/adm/roles';
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if ($env{'form.firsturl'} ne '') {
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$dest = $env{'form.firsturl'};
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}
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$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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# ---------------------------------------------------- No valid token, continue
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my $buffer;
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if ($r->header_in('Content-length') > 0) {
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$r->read($buffer,$r->header_in('Content-length'),0);
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}
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my %form;
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foreach my $pair (split(/&/,$buffer)) {
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my ($name,$value) = split(/=/,$pair);
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$value =~ tr/+/ /;
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$value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
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$form{$name}=$value;
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}
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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);
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return OK;
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}
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# split user logging in and "su"-user
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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');
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my $domain = $r->dir_config('lonDefDomain');
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my $prodir = $r->dir_config('lonUsersDir');
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my $contact_name = &mt('LON-CAPA helpdesk');
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# ---------------------------------------- Get the information from login token
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my $tmpinfo=Apache::lonnet::reply('tmpget:'.$form{'logtoken'},
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$form{'serverid'});
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if (($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 ". $form{'serverid'}." to get login token");
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return OK;
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}
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}
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if (!&Apache::lonnet::domain($form{'udom'})) {
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&failed($r,'The domain you provided is not a valid LON-CAPA domain.',\%form);
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return OK;
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}
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my ($key,$firsturl,$rolestr,$symbstr,$iptokenstr)=split(/&/,$tmpinfo);
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if ($rolestr) {
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$rolestr = &unescape($rolestr);
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}
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if ($symbstr) {
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$symbstr= &unescape($symbstr);
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}
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if ($iptokenstr) {
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$iptokenstr = &unescape($iptokenstr);
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}
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if ($rolestr =~ /^role=/) {
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(undef,$form{'role'}) = split('=',$rolestr);
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}
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if ($symbstr =~ /^symb=/) {
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(undef,$form{'symb'}) = split('=',$symbstr);
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}
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if ($iptokenstr =~ /^iptoken=/) {
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(undef,$form{'iptoken'}) = split('=',$iptokenstr);
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}
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my $upass = $ENV{HTTPS} ? $form{'upass0'}
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: &Apache::loncommon::des_decrypt($key,$form{'upass0'});
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# ---------------------------------------------------------------- Authenticate
|
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my %domconfig = &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'});
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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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}
|
|
my $clientcancheckhost = 1;
|
|
my $authhost=Apache::lonnet::authenticate($form{'uname'},$upass,
|
|
$form{'udom'},$defaultauth,
|
|
$clientcancheckhost);
|
|
|
|
# --------------------------------------------------------------------- Failed?
|
|
|
|
if ($authhost eq 'no_host') {
|
|
&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');
|
|
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 $hosthere;
|
|
if ($form{'iptoken'}) {
|
|
my %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') {
|
|
&Apache::lonnet::logthis(&Apache::lonnet::homeserver($suname,$sudom));
|
|
# ------------------------------ see if the su-user is not too highly privileged
|
|
unless (&Apache::lonnet::privileged($suname,$sudom)) {
|
|
#
|
|
# su-user's home server and user's home server must have one of:
|
|
# (a) same internet dom
|
|
# (b) same primary library server for home server's domain
|
|
# (c) same "internet domain" for primary library server for home server's domain
|
|
#
|
|
unless ($sudom eq $form{'udom'}) {
|
|
my $suprim = &Apache::lonnet::domain($sudom,'primary');
|
|
my $uprim = &Apache::lonnet::domain($sudom,'primary');
|
|
unless ($suprim eq $uprim) {
|
|
my $suintdom = &Apache::lonnet::internet_dom($suprim);
|
|
my $uintdom = &Apache::lonnet::internet_dom($uprim);
|
|
unless ($suintdom eq $uintdom) {
|
|
&Apache::lonnet::logthis('Attempted switch user '
|
|
.'to privileged user');
|
|
}
|
|
}
|
|
}
|
|
|
|
# -------------------------------------------------------- actually switch users
|
|
|
|
&Apache::lonnet::logperm('User '.$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('Attempted switch user to privileged user');
|
|
}
|
|
}
|
|
} 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) {
|
|
if ($otherserver eq '') {
|
|
my $lowest_load;
|
|
($otherserver,undef,undef,undef,$lowest_load) = &Apache::lonnet::choose_server($form{'udom'});
|
|
if ($lowest_load > 100) {
|
|
$otherserver = &Apache::lonnet::spareserver($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 {
|
|
$r->print(&noswitch());
|
|
}
|
|
return OK;
|
|
} else {
|
|
if (!&check_can_host($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 {
|
|
$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 $unloaded=Apache::lonnet::spareserver($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'} = $hosthere;
|
|
}
|
|
&success($r,$form{'uname'},$form{'udom'},$authhost,$firsturl,undef,
|
|
\%form);
|
|
return OK;
|
|
}
|
|
}
|
|
|
|
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 $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;
|
|
}
|
|
|
|
sub noswitch {
|
|
my $result = &Apache::loncommon::start_page('Access to LON-CAPA unavailable').
|
|
'<h3>'.&mt('Session unavailable').'</h3>'.
|
|
&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 $result;
|
|
}
|
|
|
|
sub loginhelpdisplay {
|
|
my ($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;
|
|
}
|
|
|
|
1;
|
|
__END__
|
|
|
|
|