--- loncom/auth/migrateuser.pm	2019/06/15 02:50:04	1.44
+++ loncom/auth/migrateuser.pm	2022/06/30 21:04:13	1.63
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Starts a user off based of an existing token.
 #
-# $Id: migrateuser.pm,v 1.44 2019/06/15 02:50:04 raeburn Exp $
+# $Id: migrateuser.pm,v 1.63 2022/06/30 21:04:13 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -30,7 +30,7 @@ package Apache::migrateuser;
 
 use strict;
 use LONCAPA qw(:DEFAULT :match);
-use Apache::Constants qw(:common :http :methods);
+use Apache::Constants qw(:common :http :methods :remotehost);
 use Apache::lonauth;
 use Apache::lonnet;
 use Apache::loncommon;
@@ -71,9 +71,6 @@ sub sso_check {
             $extra_env{'request.sso.reloginserver'} = 
                 $data->{'sso.reloginserver'};
         }
-        if (($data->{'balancer'}) && ($data->{'server'}) && ($data->{'balcookie'})) {
-            $extra_env{'request.balancercookie'} = $data->{'server'}.':'.$data->{'balcookie'};
-        }
     }
     return \%extra_env;
 }
@@ -115,9 +112,6 @@ sub lti_check {
         if ($data->{'lti.rosterurl'}) {
             $lti_env{'request.lti.rosterurl'} = $data->{'lti.rosterurl'};
         }
-        if (($data->{'balancer'}) && ($data->{'server'}) && ($data->{'balcookie'})) {
-            $lti_env{'request.balancercookie'} = $data->{'server'}.':'.$data->{'balcookie'};
-        }
     }
     return \%lti_env;
 }
@@ -259,6 +253,8 @@ sub ip_changed {
                 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 />'.
@@ -287,19 +283,17 @@ sub ip_changed {
         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 @names = ('origurl','symb','role','linkprotuser','linkprotexit','linkprot','linkkey');
+        foreach my $name (@names) {
+            if ($dataref->{$name} ne '') {
+                $info{$name} = $dataref->{$name};
+            }
         }
-        my $iptoken = &Apache::lonnet::tmpput(\%info,$switchto);
+        my $iptoken = &Apache::lonnet::tmpput(\%info,$switchto,'link');
         unless ($iptoken eq 'conlost') {
-            $url .= ($url =~ /\?/) ? '&' : '?';
-            $url .= 'iptoken='.$iptoken;
+            $url .= (($url =~ /\?/) ? '&' : '?') . 'iptoken='.$iptoken;
         }
         $r->print(&Apache::loncommon::start_page($title,undef,
                                                  {'redirect' =>
@@ -314,7 +308,7 @@ sub ip_changed {
 }
 
 sub logout {
-    my ($r,$handle,$data,$lti_env) = @_;
+    my ($r,$ip,$handle,$data,$lti_env,$linkprot_info) = @_;
     my $lonidsdir=$r->dir_config('lonIDsDir');
     if (unlink("$lonidsdir/$handle.id")) {
         if (($env{'user.linkedenv'} =~ /^[a-f0-9]+_linked$/) &&
@@ -328,7 +322,7 @@ sub logout {
     &Apache::lonnet::log($env{'user.domain'},
                          $env{'user.name'},
                          $env{'user.home'},
-                         "Logout $ENV{'REMOTE_ADDR'}");
+                         "Logout $ip");
 
     &Apache::loncommon::content_type($r,'text/html');
 
@@ -341,17 +335,10 @@ sub logout {
                                 -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 = $r->dir_config('lonHostID');
+    my ($url,$token,$delay,%info,%user_info);
     if (ref($data) eq 'HASH') {
-        %user_info=('ip'       => $ENV{'REMOTE_ADDR'},
+        %user_info=('ip'       => $ip,
                     'domain'   => $data->{'domain'},
                     'username' => $data->{'username'},
                     'home'     => $data->{'home'},
@@ -360,13 +347,39 @@ sub logout {
                     'symb'     => $data->{'symb'},
                     'server'   => $lonhost);
     }
-    %info = (%user_info,%lti_info);
-    my $token = &Apache::lonnet::tmpput(\%info,$lonhost);
-    my $url = '/adm/migrateuser?token='.$token;
+    $delay = 0.1;
+    if (ref($linkprot_info) eq 'HASH') {
+        if ($linkprot_info->{'linkprotuser'} ne '') {
+            $token = &Apache::lonnet::tmpput($linkprot_info,$lonhost);
+            $url = '/adm/login?ltoken='.$token;
+        } else {
+            foreach my $key (keys(%user_info)) {
+                if ($user_info{$key} eq '') {
+                    delete($user_info{$key});
+                }
+            }
+            %info = (%user_info,%{$linkprot_info});
+            $token = &Apache::lonnet::tmpput(\%info,$lonhost);
+            $url = '/adm/migrateuser?token='.$token;
+        }
+        $delay = 0;
+    } else {
+        my %lti_info;
+        if (ref($lti_env) eq 'HASH') {
+            foreach my $key (sort(keys(%{$lti_env}))) {
+                if ($key =~ /^request\.(.+)$/) {
+                    $lti_info{$1} = $lti_env->{$key};
+                }
+            }
+        }
+        %info = (%user_info,%lti_info);
+        $token = &Apache::lonnet::tmpput(\%info,$lonhost);
+        $url = '/adm/migrateuser?token='.$token;
+    }
     $r->send_http_header;
     $r->print(
         &Apache::loncommon::start_page('Updating Session ...',undef,
-                                       {'redirect'       => [0.1,$url],
+                                       {'redirect'       => [$delay,$url],
                                         'only_body'      => 1,}).
         &Apache::loncommon::end_page());
     if ($env{'request.balancercookie'}) {
@@ -547,7 +560,7 @@ sub do_server_switch {
 }
 
 sub log_switch {
-    my ($r,$data,$lti_env) = @_;
+    my ($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;
@@ -563,7 +576,7 @@ sub log_switch {
     } else {
         $logmsg .= " (no role)";
     }
-    $logmsg .= ' '.$ENV{'REMOTE_ADDR'};
+    $logmsg .= ' '.$ip;
     &Apache::lonnet::log($data->{'domain'},$data->{'username'},$data->{'home'},$logmsg);
 }
 
@@ -593,9 +606,10 @@ sub handler {
     }
     my ($home,@ids);
     @ids=&Apache::lonnet::current_machine_ids();
-    if ($data{'ip'} ne $ENV{'REMOTE_ADDR'}) {
+    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: '.
-                 $data{'ip'}.'; now: '.$ENV{'REMOTE_ADDR'}.' for '.$data{'username'}.':'.$data{'domain'});
+                 $data{'ip'}.'; now: '.$ip.' for '.$data{'username'}.':'.$data{'domain'});
 	return &ip_changed($r,$data{'domain'},$data{'server'},\@ids,\%data);
     }
     if ($data{'loncfail'}) {
@@ -659,18 +673,39 @@ sub handler {
     } 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,$extra_env);
+                &log_switch($r,\%data,$extra_env,$ip);
             }
         }
     }
 
-    my %form;
+    my (%form,$cid);
     if ($data{'symb'} ne '') {
         $form{'symb'} = $data{'symb'};
     }
@@ -680,17 +715,59 @@ sub handler {
     if ($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);
 
-    if (!$data{'role'}) {
-	my $handle = &Apache::lonnet::check_for_valid_session($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/$match_domain/\w+$}) {
+                unless ($env{'request.linkprot'} eq $data{'linkprot'}) {
+                    $checklaunch = 1;
+                }
+                unless ($env{'request.linkkey'} eq $data{'linkkey'}) {
+                    $checklaunch = 1;
+                }
+                unless ($env{'request.deeplink.login'} eq $data{'deeplink.login'}) {
+                    $checklaunch = 1;
+                }
+            }
             if ($data{'linkprot'} ne '') {
-                my ($linkprotector,$deeplink) = split(/:/,$data{'linkprot'},2);
-                if ($deeplink ne '') {
-                    &Apache::lonnet::appenv({'request.deeplink.login' => $deeplink});
+                if (($env{'user.name'} ne $data{'username'}) ||
+                    ($env{'user.domain'} ne $data{'domain'})) {
+                    my %linkprot_env;
+                    foreach my $item ('linkprot','deeplink.login') {
+                        if ($data{$item}) {
+                            $linkprot_env{$item} = $data{$item};
+                        }
+                    }
+                    &logout($r,$ip,$handle,\%data,undef,\%linkprot_env);
+                    return OK;
+                }
+                &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)) {
@@ -711,19 +788,23 @@ sub handler {
                 } else {
                     &Apache::lonnet::appenv({'user.linkproturi' => $deeplink});
                 }
-            } elsif ($data{'deeplink.login'}) {
+            } elsif ($data{'linkkey'} ne '') {
+                &Apache::lonnet::appenv({'request.linkkey' => $data{'linkkey'}});
+                if ($env{'request.linkprot'}) {
+                    &Apache::lonnet::delenv('request.linkprot');
+                }
                 my $deeplink = $data{'deeplink.login'};
-                if ($data{'linkkey'}) {
-                    my $linkkey = $data{'linkkey'};
-                    if ($env{'user.deeplinkkey'}) {
-                        my @linkkeys = split(/,/,$env{'user.deeplinkkey'});
-                        unless (grep(/^\Q$linkkey\E$/,@linkkeys)) {
-                            push(@linkkeys,$linkkey);
-                            &Apache::lonnet::appenv({'user.deeplinkkey' => join(',',sort(@linkkeys))});
-                        }
-                    } else {
-                        &Apache::lonnet::appenv({'user.deeplinkkey' => $linkkey});
+                my $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)) {
@@ -734,6 +815,8 @@ sub handler {
                         &Apache::lonnet::appenv({'user.keyedlinkuri' => $deeplink});
                     }
                 }
+            }
+            if ($data{'deeplink.login'}) {
                 &Apache::lonnet::appenv({'request.deeplink.login' => $data{'deeplink.login'}});
             }
             if ($data{'lti.login'}) {
@@ -750,7 +833,7 @@ sub handler {
 # (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,$handle,\%data,$lti_env);
+                    &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'} = $data{'lti.reqrole'};
@@ -813,7 +896,31 @@ sub handler {
                     }
                 }
             } elsif ($data{'origurl'} ne '') {
-                $r->internal_redirect($data{'origurl'});
+                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'};
+                        foreach my $item ('linkprotuser','linkprotexit') {
+                            if ($data{$item}) {
+                                $info{$item} = $data{$item};
+                            }
+                        }
+                    } 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') || ($token =~ /^error:/) ||
+                            ($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 {
@@ -821,37 +928,56 @@ sub handler {
 	    }
 	} else {
             my $desturl = '/adm/roles';
-            if ($data{'origurl'} ne '') {
-                $desturl = $data{'origurl'};
-                if ($data{'lti.login'}) {
-                    $desturl = $data{'origurl'};
+            if ($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,};
+                                          'user.linkproturi' => $linkuri,
+                                          'request.linkprot' => $data{'linkprot'}};
                         }
                     }
-                } elsif ($data{'deeplink.login'}) {
-                    if ($data{'linkkey'}) {
-                        if (ref($extra_env) eq 'HASH') {
-                            $extra_env->{'user.deeplinkkey'} = $data{'linkkey'};
-                            $extra_env->{'user.keyedlinkuri'} = $data{'deeplink.login'},
-                        } else {
-                            $extra_env = {'user.deeplinkkey' => $data{'linkkey'},
-                                          'user.keyedlinkuri' => $data{'deeplink.login'}};
+                    foreach my $item ('linkprotuser','linkprotexit') {
+                        if ($data{$item} ne '') {
+                            $form{$item} = $data{$item};
                         }
                     }
+                } elsif ($data{'linkkey'} ne '') {
                     if (ref($extra_env) eq 'HASH') {
-                        $extra_env->{'request.deeplink.login' => $data{'deeplink.login'}};
+                        $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' => $data{'deeplink.login'}};
                     }
@@ -866,7 +992,8 @@ sub handler {
                 }
             }
 	    &Apache::lonauth::success($r,$data{'username'},$data{'domain'},
-				      $home,$desturl,$extra_env,\%form,$skipcritical);
+				      $home,$desturl,$extra_env,\%form,$skipcritical,'',
+                                      $expirepub);
 	}
 	return OK;
     }
@@ -886,7 +1013,7 @@ sub handler {
                 $needslogout = 1;
             }
             if ($needslogout) {
-                &logout($r,$handle,\%data,$lti_env);
+                &logout($r,$ip,$handle,\%data,$lti_env);
                 return OK;
             }
         }
@@ -898,23 +1025,53 @@ sub handler {
         ($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'}) {
+            $next_url='/adm/roles?selectrole=1&'.&escape($data{'role'}).'=1';
+            if ($data{'origurl'} ne '') {
+                $next_url .= '&orgurl='.&escape($data{'origurl'});
+            }
+        } else {
+            $next_url='/adm/roles?selectrole=1&amp;'.&escape($data{'role'}).'=1';
+            if ($data{'origurl'} ne '') {
+                $next_url .= '&amp;orgurl='.&escape($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) {
+                $next_url .= '&amp;navmap=1';
+            } else {
+                $next_url .= '&navmap=1';
+            }
         }
     }
     if ($reuse_session) {
         $r->internal_redirect($next_url);
     } else {
+        if ($data{'deeplink.login'}) {
+            if (ref($extra_env) eq 'HASH') {
+                $extra_env->{'request.deeplink.login'} = $data{'deeplink.login'};
+            } else {
+                $extra_env = {'request.deeplink.login' => $data{'deeplink.login'}};
+            }
+            if ($data{'linkprot'}) {
+                $extra_env->{'request.linkprot'} = $data{'linkprot'};
+                foreach my $item ('linkprotuser','linkprotexit') {
+                    if ($data{$item}) {
+                        $form{'request.'.$item} = $data{$item};
+                    }
+                }
+            } elsif ($data{'linkkey'} ne '') {
+                $extra_env->{'request.linkkey'} = $data{'linkkey'};
+            }
+        }
         &Apache::lonauth::success($r,$data{'username'},$data{'domain'},$home,
-                                  $next_url,$extra_env,\%form);
+                                  $next_url,$extra_env,\%form,'',$cid);
     }
     return OK;
 }