# The LearningOnline Network
# Starts a user off based of an existing token.
#
# $Id: migrateuser.pm,v 1.25.2.4 2021/01/04 03:52:32 raeburn Exp $
#
# Copyright Michigan State University Board of Trustees
#
# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
#
# LON-CAPA is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# LON-CAPA is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with LON-CAPA; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# /home/httpd/html/adm/gpl.txt
#
# http://www.lon-capa.org/
#
package Apache::migrateuser;
use strict;
use LONCAPA qw(:DEFAULT :match);
use Apache::Constants qw(:common :http :methods);
use Apache::lonauth;
use Apache::lonnet;
use Apache::lonlocal;
use Apache::lonlogin();
sub goto_login {
my ($r,$domain) = @_;
&Apache::loncommon::content_type($r,'text/html');
$r->send_http_header;
my $url = '/adm/login';
if ($domain) {
$url .= '?domain='.$domain;
}
$r->print(&Apache::loncommon::start_page('Going to login',undef,
{'redirect' => [0,$url],}).
'<h1>'.&mt('One moment please...').'</h1>'.
'<p>'.&mt('Transferring to login page.').'</p>'.
&Apache::loncommon::end_page());
return OK;
}
sub sso_check {
my ($data) = @_;
my %extra_env;
if (ref($data) eq 'HASH') {
if ($data->{'sso.login'}) {
$extra_env{'request.sso.login'} = $data->{'sso.login'};
}
if ($data->{'sso.reloginserver'}) {
$extra_env{'request.sso.reloginserver'} =
$data->{'sso.reloginserver'};
}
}
return \%extra_env;
}
sub ip_changed {
my ($r,$udom,$camefrom,$dataref) = @_;
&Apache::loncommon::content_type($r,'text/html');
$r->send_http_header;
if (ref($dataref) eq 'HASH') {
my $title = 'LON-CAPA Session redirected';
my $message = &mt('Your internet address has changed since you logged in.');
my $rule_in_effect;
if ($dataref->{'balancer'}) {
my $baldom = &Apache::lonnet::host_domain($camefrom);
my $balprimaryid = &Apache::lonnet::domain($baldom,'primary');
my $balintdom = &Apache::lonnet::internet_dom($balprimaryid);
my $uprimaryid = &Apache::lonnet::domain($udom,'primary');
my $uintdom = &Apache::lonnet::internet_dom($uprimaryid);
my $dom_in_use;
if (($uintdom ne '') && ($uintdom eq $balintdom)) {
$dom_in_use = $udom;
} else {
$dom_in_use = $baldom;
}
my ($result,$cached)=&Apache::lonnet::is_cached_new('loadbalancing',$dom_in_use);
unless (defined($cached)) {
my $cachetime = 60*60*24;
my %domconfig =
&Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
$result = &Apache::lonnet::do_cache_new('loadbalancing',$dom_in_use,
$domconfig{'loadbalancing'},$cachetime);
}
}
if (ref($result) eq 'HASH') {
(undef,my $currtargets,my $currrules) =
&Apache::lonnet::check_balancer_result($result,$dataref->{'server'});
if (ref($currrules) eq 'HASH') {
if ($dataref->{'sso.login'}) {
if ($currrules->{'_LC_ipchangesso'} ne '') {
$rule_in_effect = $currrules->{'_LC_ipchangesso'};
}
} else {
if ($currrules->{'_LC_ipchange'} ne '') {
$rule_in_effect = $currrules->{'_LC_ipchange'};
}
}
}
}
}
my $url;
my $lonhost= $r->dir_config('lonHostID');
my $switchto = $lonhost;
if ($rule_in_effect ne 'offloadedto') {
my $hosthere;
my @ids=&Apache::lonnet::current_machine_ids();
unless ($rule_in_effect eq 'balancer') {
if (grep(/^\Q$rule_in_effect\E$/,@ids)) {
$hosthere = 1;
}
}
unless ($hosthere) {
if ($dataref->{'role'}) {
my ($adom,$aname);
if ($dataref->{'role'} =~ m{^au\./($match_domain)/$}) {
$adom = $1;
$aname = $dataref->{'username'};
} elsif ($dataref->{'role'} =~ m{^(?:ca|aa)\./($match_domain)/($match_username)$}) {
$adom = $1;
$aname = $2;
}
if ($adom ne '' && $aname ne '') {
my $ahome = &Apache::lonnet::homeserver($aname,$adom);
unless ($ahome eq 'no_host') {
if ($ahome && grep(/^\Q$ahome\E$/,@ids)) {
$hosthere = 1;
}
}
}
}
}
unless ($hosthere) {
my $hostname;
if ($rule_in_effect eq 'balancer') {
$hostname = &Apache::lonnet::hostname($dataref->{'server'});
if ($hostname) {
$switchto = $dataref->{'server'};
}
} else {
$hostname = &Apache::lonnet::hostname($rule_in_effect);
if ($hostname) {
$switchto = $rule_in_effect;
}
}
if ($hostname) {
my $protocol = $Apache::lonnet::protocol{$switchto};
$protocol = 'http' if ($protocol ne 'https');
$url = $protocol.'://'.$hostname;
if ($rule_in_effect eq 'balancer') {
$message .= '<br />'.
&mt('As a result, your LON-CAPA session is being redirected to the server where you originally logged in.');
} else {
$message .= '<br />'.
&mt('As a result, your LON-CAPA session is being redirected.');
}
}
}
unless ($hosthere) {
if (($dataref->{'balancer'}) && ($dataref->{'balcookie'})) {
&Apache::lonnet::delbalcookie($dataref->{'balcookie'},$dataref->{'balancer'});
}
}
}
if ($dataref->{'sso.login'}) {
$url .= '/adm/roles';
} else {
$url .= '/adm/login';
if ($udom) {
$url .= '?domain='.$udom;
}
$message .= '<br />'.&mt('You will need to provide your password one more time.');
}
my %info= (
'domain' => $udom,
'username' => $dataref->{'username'},
'role' => $dataref->{'role'},
'sessionserver' => $lonhost,
);
if ($dataref->{'origurl'}) {
$info{'origurl'} = $dataref->{'origurl'};
}
if ($dataref->{'symb'}) {
$info{'symb'} = $dataref->{'symb'};
}
my $iptoken = &Apache::lonnet::tmpput(\%info,$switchto);
unless ($iptoken eq 'conlost') {
$url .= ($url =~ /\?/) ? '&' : '?';
$url .= 'iptoken='.$iptoken;
}
$r->print(&Apache::loncommon::start_page($title,undef,
{'redirect' =>
[2,$url],}).
'<h1>'.&mt('One moment please...').'</h1>'.
'<p class="LC_warning">'.$message.'</p>'.
&Apache::loncommon::end_page());
} else {
return &goto_login($r);
}
return OK;
}
sub handler {
my ($r) = @_;
&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['token']);
my %data = &Apache::lonnet::tmpget($env{'form.token'});
if (keys(%data) == 0) {
return &goto_login($r);
}
my $delete = &Apache::lonnet::tmpdel($env{'form.token'});
&Apache::lonlocal::get_language_handle($r);
if ($delete ne 'ok') {
return &goto_login($r);
}
if (!defined($data{'username'}) || !defined($data{'domain'})) {
return &goto_login($r);
}
my $ip = &Apache::lonnet::get_requestor_ip();
if ($data{'ip'} ne $ip) {
&Apache::lonnet::logthis('IP change when session migration requested -- was: '.
$data{'ip'}.'; now: '.$ip.' for '.$data{'username'}.':'.$data{'domain'});
return &ip_changed($r,$data{'domain'},$data{'server'},\%data);
}
&Apache::lonnet::logthis("Allowing access for $data{'username'}:$data{'domain'} to $data{'role'}");
my $home=&Apache::lonnet::homeserver($data{'username'},$data{'domain'});
my $udom;
if (&Apache::lonnet::domain($data{'domain'})) {
$udom=$data{'domain'};
}
if ($home =~ /(con_lost|no_such_host)/) { return &goto_login($r,$udom); }
my $extra_env = &sso_check(\%data);
if (($data{'balancer'}) && ($data{'server'}) && ($data{'balcookie'})) {
if (ref($extra_env) eq 'HASH') {
$extra_env->{'request.balancercookie'} = $data{'server'}.':'.$data{'balcookie'};
} else {
$extra_env = { 'request.balancercookie' => $data{'server'}.':'.$data{'balcookie'} };
}
} elsif (($data{'server'}) && ($data{'otherbalcookie'})) {
my ($balancer,$balcookie) = split(/:/,$data{'otherbalcookie'});
if (defined(&Apache::lonnet::hostname($balancer)) && $balcookie =~ /^[a-f0-9]{32}$/) {
my $baldom = &Apache::lonnet::host_domain($balancer);
if (&Apache::lonnet::shared_institution($baldom)) {
my $cookieid = join('_',$udom,$data{'username'},$balcookie);
&Apache::lonnet::updatebalcookie($cookieid,$balancer,$data{'server'});
if (ref($extra_env) eq 'HASH') {
$extra_env->{'request.balancercookie'} = $data{'otherbalcookie'};
} else {
$extra_env = { 'request.balancercookie' => $data{'otherbalcookie'} };
}
}
}
}
my (%form,$cid);
if ($data{'symb'} ne '') {
$form{'symb'} = $data{'symb'};
}
if ($data{'iptoken'} ne '') {
$form{'iptoken'} = $data{'iptoken'};
}
if ($data{'noloadbalance'} ne '') {
$form{'noloadbalance'} = $data{'noloadbalance'};
}
if ($data{'role'}) {
if ($data{'role'} =~ m{\./($match_domain)/($match_courseid)(?:/\w+|$)}) {
unless (&Apache::lonnet::homeserver($2,$1) eq 'no_host') {
$cid = $1.'_'.$2;
}
}
} else {
my $handle = &Apache::lonnet::check_for_valid_session($r);
if ($handle) {
&Apache::lonnet::transfer_profile_to_env($r->dir_config('lonIDsDir'),
$handle);
if ($data{'origurl'} ne '') {
$r->internal_redirect($data{'origurl'});
} elsif ($env{'request.course.id'}) {
$r->internal_redirect('/adm/navmaps');
} else {
$r->internal_redirect('/adm/roles');
}
} else {
my $desturl = '/adm/roles';
if ($data{'origurl'} ne '') {
$desturl = $data{'origurl'};
}
&Apache::lonauth::success($r,$data{'username'},$data{'domain'},
$home,$desturl,$extra_env,\%form);
}
return OK;
}
my $next_url='/adm/roles?selectrole=1&'.&escape($data{'role'}).'=1';
if ($data{'origurl'} ne '') {
$next_url .= '&orgurl='.&escape($data{'origurl'});
}
&Apache::lonauth::success($r,$data{'username'},$data{'domain'},$home,
$next_url,$extra_env,\%form,$cid);
return OK;
}
1;
__END__
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>