# The LearningOnline Network
# Starts a user off based of an existing token.
#
# $Id: migrateuser.pm,v 1.56 2021/11/18 20:25:27 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 :remotehost);
use Apache::lonauth;
use Apache::lonnet;
use Apache::loncommon;
use Apache::lonlocal;
use Apache::lonlogin();
use Apache::ltiauth;
use Apache::switchserver;
use CGI::Cookie;
sub goto_login {
my ($r,$domain,$data) = @_;
if ((ref($data) eq 'HASH') && ($data->{'lti.login'})) {
&Apache::ltiauth::invalid_request($r,'22');
} else {
&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'} =
$data->{'sso.reloginserver'};
}
}
return \%extra_env;
}
sub lti_check {
my ($data) = @_;
my %lti_env;
if (ref($data) eq 'HASH') {
if ($data->{'lti.login'}) {
$lti_env{'request.lti.login'} = $data->{'lti.login'};
if ($data->{'lti.reqcrs'}) {
$lti_env{'request.lti.reqcrs'} = $data->{'lti.reqcrs'};
}
if ($data->{'lti.reqrole'}) {
$lti_env{'request.lti.reqrole'} = $data->{'lti.reqrole'};
}
if ($data->{'lti.selfenrollrole'}) {
$lti_env{'request.lti.selfenrollrole'} = $data->{'lti.selfenrollrole'};
}
if ($data->{'lti.uri'}) {
$lti_env{'request.lti.uri'} = $data->{'lti.uri'};
}
if ($data->{'lti.target'}) {
$lti_env{'request.lti.target'} = $data->{'lti.target'};
}
if ($data->{'lti.sourcecrs'}) {
$lti_env{'request.lti.sourcecrs'} = $data->{'lti.sourcecrs'};
}
}
if ($data->{'lti.passbackid'}) {
$lti_env{'request.lti.passbackid'} = $data->{'lti.passbackid'};
}
if ($data->{'lti.passbackurl'}) {
$lti_env{'request.lti.passbackurl'} = $data->{'lti.passbackurl'};
}
if ($data->{'lti.rosterid'}) {
$lti_env{'request.lti.rosterid'} = $data->{'lti.rosterid'};
}
if ($data->{'lti.rosterurl'}) {
$lti_env{'request.lti.rosterurl'} = $data->{'lti.rosterurl'};
}
}
return \%lti_env;
}
sub canhost {
my ($uname,$udom,$lonhost,$loncaparev) = @_;
my $canhost;
if (&Apache::lonnet::is_library($lonhost)) {
my @possdoms = &Apache::lonnet::current_machine_domains();
my %roleshash = &Apache::lonnet::get_my_roles($uname,$udom,'userroles','',['ca','aa'],\@possdoms);
if (keys(%roleshash)) {
foreach my $key (keys(%roleshash)) {
my $audom = (split(/:/,$key))[1];
if ((&Apache::lonnet::will_trust('othcoau',$udom,$audom)) &&
(&Apache::lonnet::will_trust('coaurem',$audom,$udom))) {
$canhost = 1;
last;
}
}
}
}
unless ($canhost) {
my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
my @intdoms;
my $internet_names = &Apache::lonnet::get_internet_names($lonhost);
if (ref($internet_names) eq 'ARRAY') {
@intdoms = @{$internet_names};
}
if ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
$canhost = 1;
} else {
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);
$canhost =
&Apache::lonnet::can_host_session($udom,$lonhost,$loncaparev,
$udomdefaults{'remotesessions'},
$defdomdefaults{'hostedsessions'});
}
}
return $canhost;
}
sub ip_changed {
my ($r,$udom,$camefrom,$idsref,$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 ($hosthere,@ids);
if (ref($idsref) eq 'ARRAY') {
@ids=@{$idsref};
}
unless ($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');
my $alias = &Apache::lonnet::use_proxy_alias($r,$switchto);
$hostname = $alias if ($alias ne '');
$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'},
'sessionserver' => $lonhost,
);
my @names = ('origurl','symb','role','linkprot','linkkey');
foreach my $name (@names) {
if ($dataref->{$name} ne '') {
$info{$name} = $dataref->{$name};
}
}
my $iptoken = &Apache::lonnet::tmpput(\%info,$switchto,'link');
unless ($iptoken eq 'conlost') {
$url .= (($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($r);
}
return OK;
}
sub logout {
my ($r,$ip,$handle,$data,$lti_env) = @_;
my $lonidsdir=$r->dir_config('lonIDsDir');
if (unlink("$lonidsdir/$handle.id")) {
if (($env{'user.linkedenv'} =~ /^[a-f0-9]+_linked$/) &&
(-l "$lonidsdir/$env{'user.linkedenv'}.id") &&
(readlink("$lonidsdir/$env{'user.linkedenv'}.id") eq "$lonidsdir/$handle.id")) {
unlink("$lonidsdir/$env{'user.linkedenv'}.id");
}
}
my %temp=('logout' => time);
&Apache::lonnet::put('email_status',\%temp);
&Apache::lonnet::log($env{'user.domain'},
$env{'user.name'},
$env{'user.home'},
"Logout $ip");
&Apache::loncommon::content_type($r,'text/html');
#expire the cookies
my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
foreach my $name (keys(%cookies)) {
next unless ($name =~ /^lon(|S|Link|Pub)ID$/);
my $c = new CGI::Cookie(-name => $name,
-value => '',
-expires => '-10y',);
$r->headers_out->add('Set-cookie' => $c);
}
my (%info,%user_info,%lti_info);
if (ref($lti_env) eq 'HASH') {
foreach my $key (sort(keys(%{$lti_env}))) {
if ($key =~ /^request\.(.+)$/) {
$lti_info{$1} = $lti_env->{$key};
}
}
}
my $lonhost = $r->dir_config('lonHostID');
if (ref($data) eq 'HASH') {
%user_info=('ip' => $ip,
'domain' => $data->{'domain'},
'username' => $data->{'username'},
'home' => $data->{'home'},
'role' => $data->{'role'},
'origurl' => $data->{'origurl'},
'symb' => $data->{'symb'},
'server' => $lonhost);
}
%info = (%user_info,%lti_info);
my $token = &Apache::lonnet::tmpput(\%info,$lonhost);
my $url = '/adm/migrateuser?token='.$token;
$r->send_http_header;
$r->print(
&Apache::loncommon::start_page('Updating Session ...',undef,
{'redirect' => [0.1,$url],
'only_body' => 1,}).
&Apache::loncommon::end_page());
if ($env{'request.balancercookie'}) {
my ($balancer,$cookie) = split(/:/,$env{'request.balancercookie'});
if ((&Apache::lonnet::hostname($balancer)) && ($cookie =~ /^[a-f0-9]{32}$/)) {
$cookie = $env{'user.domain'}.'_'.$env{'user.name'}.'_'.$cookie;
&Apache::lonnet::delbalcookie($cookie,$balancer);
}
}
$r->register_cleanup(\&flush_course_logs);
return;
}
sub conlost_userhome {
my ($r,$idsref,$dataref) = @_;
return unless ((ref($idsref) eq 'ARRAY') && (ref($dataref) eq 'HASH'));
my @ids = @{$idsref};
my %data = %{$dataref};
my ($lonhost,$lowest_load,$otherserver,$is_balancer,%conlost,%posstargets);
$lonhost = $r->dir_config('lonHostID');
if (grep(/^\Q$lonhost\E$/,split(/,/,$data{'dom_balancers'}))) {
$is_balancer = 1;
}
$lowest_load = 30000;
if ($data{'conlost'} ne '') {
map { $conlost{$_} = 1; } split(/,/,$data{'conlost'});
}
if ($data{'loncfail'}) {
if ($lonhost ne $data{'from_balancer'}) {
my ($is_balancer,$posshost,$setcookie,$offloadto,$dom_balancers) =
&Apache::lonnet::check_loadbalancing($data{'username'},$data{'domain'});
if ($is_balancer) {
if (ref($offloadto) eq 'HASH') {
$data{'offloadto'} = '';
foreach my $key (keys(%{$offloadto})) {
if (ref($offloadto->{$key}) eq 'ARRAY') {
$data{'offloadto'} .= $key.'='.join(',',@{$offloadto->{$key}}).'&';
}
}
$data{'offloadto'} =~ s/\&$//;
} elsif (ref($offloadto) eq 'ARRAY') {
$data{'offloadto'} = join(',',@{$offloadto});
}
}
}
} else {
$conlost{$lonhost} = 1;
$data{'conlost'} = join(',',sort(keys(%conlost)));
}
if ($data{'offloadto'} =~ /\&/) {
foreach my $item (split(/\&/,$data{'offloadto'})) {
my ($type,$targets) = split(/\=/,$item);
@{$posstargets{$type}} = split(/,/,$targets);
}
} elsif ($data{'offloadto'} =~ /=/) {
my ($type,$targets) = split(/\=/,$data{'offloadto'});
@{$posstargets{$type}} = split(/,/,$targets);
} else {
@{$posstargets{'default'}} = split(/,/,$data{'offloadto'});
}
if (ref($posstargets{'primary'}) eq 'ARRAY') {
foreach my $try_server (@{$posstargets{'primary'}}) {
next if ($conlost{$try_server});
next if ((grep(/^\Q$try_server\E$/,@ids)) && !$data{'loncfail'});
($otherserver,$lowest_load) =
&Apache::lonnet::compare_server_load($try_server,
$otherserver,
$lowest_load);
}
}
my $found_server = ($otherserver ne '' && $lowest_load < 100);
if (!$found_server) {
if (ref($posstargets{'default'}) eq 'ARRAY') {
foreach my $try_server (@{$posstargets{'default'}}) {
next if ($conlost{$try_server});
next if ((grep(/^\Q$try_server\E$/,@ids)) && !$data{'loncfail'});
($otherserver,$lowest_load) =
&Apache::lonnet::compare_server_load($try_server,
$otherserver,
$lowest_load);
}
}
}
if ($otherserver ne '') {
my $switchto = &Apache::lonnet::hostname($otherserver);
if ($switchto ne '') {
$data{'server'} = $lonhost;
if ($data{'loncfail'}) {
delete($data{'loncfail'});
}
if (grep(/^\Q$otherserver\E$/,split(/,/,$data{'dom_balancers'}))) {
$data{'noloadbalance'} = $otherserver;
}
&do_server_switch($r,$otherserver,$switchto,$is_balancer,\%data);
return $otherserver;
} else {
#FIXME Contents of $data{offloadto} contains invalid hostID.
}
} else {
my (%poss_balancers,%tried_balancers);
map { $poss_balancers{$_} = 1; } split(/,/,$data{'dom_balancers'});
map { $tried_balancers{$_} = 1; } split(/,/,$data{'tried_balancers'});
if (keys(%poss_balancers)) {
foreach my $try_server (sort(keys(%poss_balancers))) {
next if (grep(/^\Q$try_server\E$/,@ids));
next if (($data{'loncfail'}) && ($tried_balancers{$try_server}));
my $alreadytried;
foreach my $key (keys(%posstargets)) {
if ((ref($posstargets{$key}) eq 'ARRAY') &&
(grep(/^\Q$try_server\E$/,@{$posstargets{$key}}))) {
$alreadytried = 1;
last;
}
}
unless ($alreadytried) {
if (&Apache::lonnet::reply('ping',$try_server) eq $try_server) {
$otherserver = $try_server;
last;
}
}
}
}
if ($otherserver ne '') {
my $switchto = &Apache::lonnet::hostname($otherserver);
if ($switchto ne '') {
$data{'server'} = $lonhost;
$data{'loncfail'} = $lonhost;
$tried_balancers{$otherserver} = 1;
$data{'tried_balancers'} = join(',',sort(keys(%tried_balancers)));
&do_server_switch($r,$otherserver,$switchto,$is_balancer,\%data);
return $otherserver;
} else {
#FIXME Contents of $data{'dom_balancers'} contains invalid hostID.
}
} else {
if ($data{'loncfail'}) {
#FIXME Nowhere to go.
} else {
# FIXME Send back to a balancer (no token); different balancer if this is a balancer.
# Send command to balancer to exclude this host using http instead on lonc/lond
}
}
}
return;
}
sub do_server_switch {
my ($r,$otherserver,$switchto,$is_balancer,$dataref) = @_;
if (ref($dataref) eq 'HASH') {
my $domain = $dataref->{'domain'};
my $username = $dataref->{'username'};
# If this is a balancer set a balancer cookie unless browser already sent
# LON-CAPA load balancer cookie which points at the target server.
if ($is_balancer) {
my $newcookieid;
my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r,1);
unless (($found_server eq $otherserver) &&
($balancer_cookie =~ /^\Q$domain\E_\Q$username\E_/)) {
$newcookieid =
&Apache::switchserver::balancer_cookieid($r,$otherserver,$username,$domain);
if ($newcookieid) {
$dataref->{'balcookie'} = $newcookieid;
}
}
}
my $token = &Apache::lonnet::tmpput($dataref,$otherserver);
my $protocol = $Apache::lonnet::protocol{$otherserver};
$protocol = 'http' if ($protocol ne 'https');
my $url = $protocol.'://'.$switchto.'/adm/login?domain='.$domain.
'&username='.$username.'&token='.$token;
$r->send_http_header;
$r->print(
&Apache::loncommon::start_page('Switching Server ...',undef,
{'redirect' => [0.1,$url]}).
&Apache::loncommon::end_page());
}
return;
}
sub log_switch {
my ($r,$data,$lti_env,$ip) = @_;
my $lonhost = $r->dir_config('lonHostID');
return unless ((ref($data) eq 'HASH') && (ref($lti_env) eq 'HASH'));
my $now = time;
my %temp=('switchserver' => $now.':'.$lonhost,$data->{'role'});
&Apache::lonnet::put('email_status',\%temp);
my $logmsg = "Switch Server to $lonhost";
if ($data->{'role'}) {
$logmsg .= " with role: ".$data->{'role'};
} elsif (($lti_env->{'reqcrs'}) && ($lti_env->{'reqrole'} eq 'cc')) {
$logmsg .= " to create new LTI course";
} elsif ($lti_env->{'selfenrollrole'}) {
$logmsg .= " to selfenroll with role: ".$lti_env->{'selfenrollrole'};
} else {
$logmsg .= " (no role)";
}
$logmsg .= ' '.$ip;
&Apache::lonnet::log($data->{'domain'},$data->{'username'},$data->{'home'},$logmsg);
}
sub flush_course_logs {
&Apache::lonnet::flushcourselogs();
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($r,undef,\%data);
}
if (!defined($data{'username'}) || !defined($data{'domain'})) {
return &goto_login($r,undef,\%data);
}
my ($home,@ids);
@ids=&Apache::lonnet::current_machine_ids();
my $ip = &Apache::lonnet::get_requestor_ip($r,REMOTE_NOLOOKUP);
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'},$data{'server'},\@ids,\%data);
}
if ($data{'loncfail'}) {
&Apache::lonnet::logthis('Returned from '.$data{'server'}.' -- no connection to library node or other access node(s)');
my $otherserver = &conlost_userhome($r,\@ids,\%data);
if ($otherserver ne '') {
&Apache::lonnet::logthis("Switching to $otherserver");
}
return OK;
} else {
$home=&Apache::lonnet::homeserver($data{'username'},$data{'domain'});
if ($home eq 'no_host') {
if (($data{'home'} ne '') && (&Apache::lonnet::hostname($data{'home'}))) {
&Apache::lonnet::reconlonc($data{'home'});
$home=&Apache::lonnet::homeserver($data{'username'},$data{'domain'});
if ($home eq 'no_host') {
unless (grep(/^\Q$data{'home'}\E$/,@ids)) {
if (&Apache::lonnet::reply('ping',$data{'home'}) eq 'con_lost') {
my $otherserver = &conlost_userhome($r,\@ids,\%data);
if ($otherserver ne '') {
&Apache::lonnet::logthis("No connection to home server ($data{'home'}) for $data{'username'}:$data{'domain'}. Switching to $otherserver");
}
return OK;
}
}
}
}
}
}
my $udom;
if (&Apache::lonnet::domain($data{'domain'})) {
$udom=$data{'domain'};
}
if ($home eq 'no_host') { return &goto_login($r,$udom,\%data); }
if (&Apache::lonnet::hostname($home) eq '') { return &goto_login($r,$udom,\%data); }
unless (grep(/^\Q$home\E$/,@ids)) {
my $lonhost = $r->dir_config('lonHostID');
my $loncaparev = $r->dir_config('lonVersion');
unless (&canhost($data{'username'},$data{'domain'},$lonhost,$loncaparev)) {
return &goto_login($r,$udom,\%data);
}
}
my $rolemsg;
if ($data{'role'}) {
$rolemsg = "role: $data{'role'}";
} else {
$rolemsg = '(no role)';
}
&Apache::lonnet::logthis("Allowing access for $data{'username'}:$data{'domain'} $rolemsg");
my $sso_env = &sso_check(\%data);
my $lti_env = <i_check(\%data);
my $extra_env;
if ((ref($sso_env) eq 'HASH') && (keys(%{$sso_env}))) {
$extra_env = $sso_env;
} elsif ((ref($lti_env) eq 'HASH') && (keys(%{$lti_env}))) {
$extra_env = $lti_env;
}
if (($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' => $data{'otherbalcookie'} };
}
}
}
}
if (($data{'conlost'}) && ($data{'server'})) {
my @conlosts = split(/,/,$data{'conlost'});
my $switchfrom = $data{'server'};
if (@conlosts) {
if (grep(/^\Q$switchfrom\E$/,@conlosts)) {
&log_switch($r,\%data,$extra_env,$ip);
}
}
}
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,$expirepub);
$handle = &Apache::lonnet::check_for_valid_session($r);
# For "public user" - remove any existing "public" cookie so actual user is logged in.
if ($handle) {
if ($handle=~/^publicuser\_/) {
my $lonidsdir=$r->dir_config('lonIDsDir');
if ($lonidsdir ne '') {
unlink("$lonidsdir/$handle.id");
}
undef($handle);
$expirepub = 1;
}
}
if ($handle) {
&Apache::lonnet::transfer_profile_to_env($r->dir_config('lonIDsDir'),
$handle);
my $checklaunch;
if ($data{'origurl'} =~ m{^/tiny/$match_domain/\w+$}) {
if ($env{'request.linkprot'} ne '') {
unless ($env{'request.linkprot'} eq $data{'linkprot'}) {
$checklaunch = 1;
}
}
if ($env{'request.linkkey'} ne '') {
unless ($env{'request.linkkey'} eq $data{'linkkey'}) {
$checklaunch = 1;
}
}
if ($env{'request.deeplink.login'}) {
unless ($env{'request.deeplink.login'} eq $data{'deeplink.login'}) {
$checklaunch = 1;
}
}
}
if ($data{'linkprot'} ne '') {
&Apache::lonnet::appenv({'request.linkprot' => $data{'linkprot'}});
if ($env{'request.linkkey'}) {
&Apache::lonnet::delenv('request.linkkey');
}
my ($linkprotector,$deeplink) = split(/:/,$data{'linkprot'},2);
if ($env{'user.linkprotector'}) {
my @protectors = split(/,/,$env{'user.linkprotector'});
unless (grep(/^\Q$linkprotector\E$/,@protectors)) {
push(@protectors,$linkprotector);
@protectors = sort { $a <=> $b } @protectors;
&Apache::lonnet::appenv({'user.linkprotector' => join(',',@protectors)});
}
} else {
&Apache::lonnet::appenv({'user.linkprotector' => $linkprotector });
}
if ($env{'user.linkproturi'}) {
my @proturis = split(/,/,$env{'user.linkproturi'});
unless(grep(/^\Q$deeplink\E$/,@proturis)) {
push(@proturis,$deeplink);
@proturis = sort @proturis;
&Apache::lonnet::appenv({'user.linkproturi' => join(',',@proturis)});
}
} else {
&Apache::lonnet::appenv({'user.linkproturi' => $deeplink});
}
} elsif ($data{'linkkey'} ne '') {
&Apache::lonnet::appenv({'request.linkkey' => $data{'linkkey'}});
if ($env{'request.linkprot'}) {
&Apache::lonnet::delenv('request.linkprot');
}
my $deeplink = $data{'deeplink.login'};
my $linkkey = $data{'linkkey'};
if ($env{'user.deeplinkkey'} ne '') {
my @linkkeys = split(/,/,$env{'user.deeplinkkey'});
unless (grep(/^\Q$linkkey\E$/,@linkkeys)) {
push(@linkkeys,$linkkey);
&Apache::lonnet::appenv({'user.deeplinkkey' => join(',',sort(@linkkeys))});
}
} else {
&Apache::lonnet::appenv({'user.deeplinkkey' => $linkkey});
}
if ($deeplink) {
if ($env{'user.keyedlinkuri'}) {
my @keyeduris = split(/,/,$env{'user.keyedlinkuri'});
unless (grep(/^\Q$deeplink\E$/,@keyeduris)) {
push(@keyeduris,$deeplink);
&Apache::lonnet::appenv({'user.keyedlinkuri' => join(',',sort(@keyeduris))});
}
} else {
&Apache::lonnet::appenv({'user.keyedlinkuri' => $deeplink});
}
}
}
if ($data{'deeplink.login'}) {
&Apache::lonnet::appenv({'request.deeplink.login' => $data{'deeplink.login'}});
}
if ($data{'lti.login'}) {
my $needslogout;
if ($env{'request.lti.login'}) {
if (($env{'user.name'} ne $data{'username'}) ||
($env{'user.domain'} ne $data{'domain'})) {
$needslogout = 1;
}
} else {
$needslogout = 1;
}
# If access is via LTI, and user already has a non-LTI session cookie
# (and session) or has an LTI session cookie for a different username,
# logout the existing session, and start a new one
if ($needslogout) {
&logout($r,$ip,$handle,\%data,$lti_env);
} elsif (($data{'lti.reqcrs'}) && ($data{'lti.reqrole'} eq 'cc')) {
$form{'lti.reqcrs'} = $data{'lti.reqcrs'};
$form{'lti.reqrole'} = $data{'lti.reqrole'};
$form{'lti.sourcecrs'} = $data{'lti.sourcecrs'};
$form{'lti.uri'} = $data{'lti.uri'};
if ($data{'lti.passbackid'}) {
$form{'lti.passbackid'} = $data{'lti.passbackid'};
}
if ($data{'lti.passbackurl'}) {
$form{'lti.passbackurl'} = $data{'lti.passbackurl'};
}
if ($data{'lti.rosterid'}) {
$form{'lti.rosterid'} = $data{'lti.rosterid'};
}
if ($data{'lti.rosterurl'}) {
$form{'lti.rosterurl'} = $data{'lti.rosterurl'};
}
if ($data{'lti.target'}) {
$form{'lti.target'} = $data{'lti.target'};
}
&Apache::loncommon::content_type($r,'text/html');
$r->send_http_header;
&Apache::ltiauth::lti_reqcrs($r,$data{'domain'},\%form,$data{'username'},$data{'domain'});
} else {
if (ref($lti_env) eq 'HASH') {
delete($lti_env->{'reqcrs'});
delete($lti_env->{'reqrole'});
delete($lti_env->{'selfenrollrole'});
}
if ($data{'lti.selfenrollrole'}) {
if (&Apache::ltiauth::lti_enroll($data{'username'},$data{'domain'},
$data{'lti.selfenrollrole'}) eq 'ok') {
my $url = '/adm/roles?selectrole=1&'.
&escape($data{'lti.selfenrollrole'}).'=1';
if ($data{'origurl'} =~ m{/default_\d+\.sequence$}) {
$url .= '&orgurl='.$data{'origurl'}.'&navmap=1';
} elsif ($data{'origurl'} ne '') {
$url .= '&orgurl='.$data{'origurl'};
}
if (ref($lti_env) eq 'HASH') {
&Apache::lonnet::appenv($lti_env);
}
$r->internal_redirect($url);
} else {
&Apache::ltiauth::invalid_request($r,23);
}
} elsif ($data{'origurl'} ne '') {
my $url = $data{'origurl'};
if ($url =~ m{/default_\d+\.sequence$}) {
$url .= (($url =~/\?/)?'&':'?').'navmap=1';
}
if (ref($lti_env) eq 'HASH') {
&Apache::lonnet::appenv($lti_env);
}
$r->internal_redirect($url);
} else {
if (ref($lti_env) eq 'HASH') {
&Apache::lonnet::appenv($lti_env);
}
}
}
} elsif ($data{'origurl'} ne '') {
my $dest = $data{'origurl'};
if (($env{'request.deeplink.login'} eq $data{'origurl'}) &&
(($env{'request.linkprot'}) || ($env{'request.linkkey'} ne ''))) {
my %info;
if ($env{'request.linkprot'}) {
$info{'linkprot'} = $env{'request.linkprot'};
} elsif ($env{'request.linkkey'} ne '') {
$info{'linkkey'} = $env{'request.linkkey'};
}
$info{'origurl'} = $data{'origurl'};
if ($checklaunch) {
$info{'checklaunch'} = 1;
}
my $token = &Apache::lonnet::tmpput(\%info,$r->dir_config('lonHostID'),'link');
unless (($token eq 'con_lost') || ($token eq 'refused') ||
($token eq 'unknown_cmd') || ($token eq 'no_such_host')) {
$dest .= (($dest =~ /\?/) ? '&' : '?') . 'ttoken='.$token;
}
}
$r->internal_redirect($dest);
} elsif ($env{'request.course.id'}) {
$r->internal_redirect('/adm/navmaps');
} else {
$r->internal_redirect('/adm/roles');
}
} else {
my $desturl = '/adm/roles';
if ($data{'lti.login'}) {
if ($data{'lti.selfenrollrole'}) {
$desturl .= '?selectrole=1&'.
&escape($data{'lti.selfenrollrole'}).'=1';
if ($data{'origurl'} ne '') {
$desturl .= '&orgurl='.$data{'origurl'};
if ($data{'origurl'} =~ m{/default_\d+\.sequence$}) {
$desturl .= '&navmap=1';
}
}
} elsif ($data{'origurl'} ne '') {
$desturl = $data{'origurl'};
if ($desturl =~ m{/default_\d+\.sequence$}) {
$desturl .= (($desturl =~/\?/)?'&':'?').'navmap=1';
}
}
} elsif ($data{'origurl'} ne '') {
$desturl = $data{'origurl'};
if ($data{'linkprot'}) {
my ($linkprotector,$linkuri) = split(/:/,$data{'linkprot'},2);
if ($linkprotector) {
if (ref($extra_env) eq 'HASH') {
$extra_env->{'user.linkprotector'} = $linkprotector;
$extra_env->{'user.linkproturi'} = $linkuri;
$extra_env->{'request.linkprot'} = $data{'linkprot'};
} else {
$extra_env = {'user.linkprotector' => $linkprotector,
'user.linkproturi' => $linkuri,
'request.linkprot' => $data{'linkprot'}};
}
}
} elsif ($data{'linkkey'} ne '') {
if (ref($extra_env) eq 'HASH') {
$extra_env->{'user.deeplinkkey'} = $data{'linkkey'};
$extra_env->{'user.keyedlinkuri'} = $data{'deeplink.login'};
$extra_env->{'request.linkkey'} = $data{'linkkey'};
} else {
$extra_env = {'user.deeplinkkey' => $data{'linkkey'},
'user.keyedlinkuri' => $data{'deeplink.login'},
'request.linkkey' => $data{'linkkey'}};
}
}
if ($data{'deeplink.login'}) {
if (ref($extra_env) eq 'HASH') {
$extra_env->{'request.deeplink.login'} = $data{'deeplink.login'};
} else {
$extra_env = {'request.deeplink.login' => $data{'deeplink.login'}};
}
}
}
my $skipcritical;
if ($data{'lti.login'}) {
if ((($data{'lti.reqcrs'}) &&
($data{'lti.reqrole'} eq 'cc')) ||
($data{'lti.selfenrollrole'})) {
$skipcritical = 1;
}
}
&Apache::lonauth::success($r,$data{'username'},$data{'domain'},
$home,$desturl,$extra_env,\%form,$skipcritical,'',
$expirepub);
}
return OK;
}
if ($data{'lti.login'}) {
my $handle = &Apache::lonnet::check_for_valid_session($r);
if ($handle) {
&Apache::lonnet::transfer_profile_to_env($r->dir_config('lonIDsDir'),
$handle);
my $needslogout;
if ($env{'request.lti.login'}) {
if (($env{'user.name'} ne $data{'username'}) ||
($env{'user.domain'} ne $data{'domain'})) {
$needslogout = 1;
}
} else {
$needslogout = 1;
}
if ($needslogout) {
&logout($r,$ip,$handle,\%data,$lti_env);
return OK;
}
}
}
# check if current user, and role match those expected.
my ($next_url,$reuse_session);
if (($env{'user.name'} eq $data{'username'}) && ($env{'user.domain'} eq $data{'domain'}) &&
($env{'request.role'} eq $data{'role'}) && ($data{'origurl'} ne '')) {
$next_url = $data{'origurl'};
$reuse_session = 1;
} elsif ($data{'origurl'} =~ m{^/tiny/$match_domain/\w+$}) {
$next_url=$data{'origurl'};
} else {
$next_url='/adm/roles?selectrole=1&'.&escape($data{'role'}).'=1';
if ($data{'origurl'} ne '') {
$next_url .= '&orgurl='.&escape($data{'origurl'});
}
}
if ($data{'lti.login'}) {
if (($data{'origurl'} =~ m{/default_\d+\.sequence$}) ||
($data{'origurl'} =~ m{^/res/.+\.sequence$})) {
$next_url .= '&navmap=1';
}
}
if ($reuse_session) {
$r->internal_redirect($next_url);
} elsif ($data{'deeplink.login'}) {
if (ref($extra_env) eq 'HASH') {
$extra_env->{'request.deeplink.login'} = $data{'deeplink.login'};
} else {
$extra_env = {'request.deeplink.login' => $data{'deeplink.login'}};
}
if ($data{'linkprot'}) {
$extra_env->{'request.linkprot'} = $data{'linkprot'};
} elsif ($data{'linkkey'} ne '') {
$extra_env->{'request.linkkey'} = $data{'linkkey'};
}
&Apache::lonauth::success($r,$data{'username'},$data{'domain'},$home,
$next_url,$extra_env,\%form,'',$cid);
}
return OK;
}
1;
__END__
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