--- loncom/auth/migrateuser.pm	2020/10/23 20:58:08	1.25.2.3
+++ loncom/auth/migrateuser.pm	2022/02/24 00:50:10	1.25.2.5.2.3
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Starts a user off based of an existing token.
 #
-# $Id: migrateuser.pm,v 1.25.2.3 2020/10/23 20:58:08 raeburn Exp $
+# $Id: migrateuser.pm,v 1.25.2.5.2.3 2022/02/24 00:50:10 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -30,11 +30,12 @@ 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::lonlocal;
 use Apache::lonlogin();
+use CGI::Cookie;
 
 sub goto_login {
     my ($r,$domain) = @_;
@@ -52,7 +53,6 @@ sub goto_login {
     return OK;
 }
 
-
 sub sso_check {
     my ($data) = @_;
     my %extra_env;
@@ -161,6 +161,8 @@ sub ip_changed {
                 if ($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 />'.
@@ -189,19 +191,17 @@ 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','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' =>
@@ -215,9 +215,76 @@ sub ip_changed {
     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);
+        }
+    }
+    $r->register_cleanup(\&flush_course_logs);
+    return;
+}
+
 sub handler {
     my ($r) = @_;
-    
+
     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['token']);
     my %data =   &Apache::lonnet::tmpget($env{'form.token'});
     if (keys(%data) == 0) {
@@ -234,9 +301,10 @@ sub handler {
     if (!defined($data{'username'}) || !defined($data{'domain'})) {
         return &goto_login($r);
     }
-    if ($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'},\%data);
     }
 
@@ -288,12 +356,124 @@ sub handler {
             }
         }
     } else {
-	my $handle = &Apache::lonnet::check_for_valid_session($r);
+        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/$match_domain/\w+$}) {
+                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 '') {
+                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}) {
+                            $linkprot_env{'request.'.$item} = $data{$item};
+                        }
+                    }
+                    &logout($r,$ip,$handle,\%data,\%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$/,@protectors)) {
+                        push(@protectors,$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{'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'} = $env{'request.linkprot'};
+                    } elsif ($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 {
@@ -303,19 +483,61 @@ sub handler {
             my $desturl = '/adm/roles';
             if ($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'}) {
+                    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' => $data{'deeplink.login'}};
+                    }
+                }
             }
 	    &Apache::lonauth::success($r,$data{'username'},$data{'domain'},
-				      $home,$desturl,$extra_env,\%form);
-
+				      $home,$desturl,$extra_env,\%form,'',
+                                      $expirepub);
 	}
 	return OK;
-
     }
 
     my $next_url='/adm/roles?selectrole=1&amp;'.&escape($data{'role'}).'=1';
     if ($data{'origurl'} ne '') {
         $next_url .= '&amp;orgurl='.&escape($data{'origurl'});
     }
+    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'} = $data{'linkprot'};
+        } elsif ($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;