--- loncom/auth/migrateuser.pm	2014/10/06 00:48:44	1.23
+++ loncom/auth/migrateuser.pm	2018/11/24 16:19:04	1.35
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Starts a user off based of an existing token.
 #
-# $Id: migrateuser.pm,v 1.23 2014/10/06 00:48:44 raeburn Exp $
+# $Id: migrateuser.pm,v 1.35 2018/11/24 16:19:04 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -35,21 +35,29 @@ use Apache::lonauth;
 use Apache::lonnet;
 use Apache::lonlocal;
 use Apache::lonlogin();
+use Apache::ltiauth;
+use CGI::Cookie;
 
 sub goto_login {
-    my ($r) = @_;
-    &Apache::loncommon::content_type($r,'text/html');
-    $r->send_http_header;
-    $r->print(&Apache::loncommon::start_page('Going to login',undef,
-					     {'redirect' =>
-						  [0,'/adm/login'],}).
-	      '<h1>'.&mt('One moment please...').'</h1>'.
-	      '<p>'.&mt('Transferring to login page.').'</p>'.
-	      &Apache::loncommon::end_page());
+    my ($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;
@@ -61,10 +69,54 @@ 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;
 }
 
+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'} = $data->{'lti.rosterurl'};
+        }
+    }
+    return \%lti_env;
+}
+
 sub ip_changed {
     my ($r,$udom,$camefrom,$dataref) = @_;
     &Apache::loncommon::content_type($r,'text/html');
@@ -168,15 +220,23 @@ sub ip_changed {
                     }
                 }
             }
+            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'          => $dataref->{'domain'},
+                    'domain'          => $udom,
                     'username'        => $dataref->{'username'},
                     'role'            => $dataref->{'role'},
                     'sessionserver'   => $lonhost,
@@ -189,7 +249,8 @@ sub ip_changed {
         }
         my $iptoken = &Apache::lonnet::tmpput(\%info,$switchto);
         unless ($iptoken eq 'conlost') {
-            $url .= '?iptoken='.$iptoken;
+            $url .= ($url =~ /\?/) ? '&' : '?';
+            $url .= 'iptoken='.$iptoken;
         }
         $r->print(&Apache::loncommon::start_page($title,undef,
                                                  {'redirect' =>
@@ -203,6 +264,66 @@ sub ip_changed {
     return OK;
 }
 
+sub logout {
+    my ($r,$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 $ENV{'REMOTE_ADDR'}");
+
+    &Apache::loncommon::content_type($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') {
+        %lti_info = %{$lti_env};
+    }
+    my $lonhost = $r->dir_config('lonHostID');
+    if (ref($data) eq 'HASH') {
+        %user_info=('ip'       => $ENV{'REMOTE_ADDR'},
+                    'domain'   => $data->{'domain'},
+                    'username' => $data->{'username'},
+                    '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());
+    $r->register_cleanup(\&flush_course_logs);
+    return;
+}
+
+sub flush_course_logs {
+    &Apache::lonnet::flushcourselogs();
+    return OK;
+}
+
 sub handler {
     my ($r) = @_;
     
@@ -216,21 +337,35 @@ sub handler {
     &Apache::lonlocal::get_language_handle($r);
 
     if ($delete ne 'ok') {
-	return &goto_login($r);
+	return &goto_login($r,undef,\%data);
     }
 
     if (!defined($data{'username'}) || !defined($data{'domain'})) {
-        return &goto_login($r);
+        return &goto_login($r,undef,\%data);
     }
     if ($data{'ip'} ne $ENV{'REMOTE_ADDR'}) {
+        &Apache::lonnet::logthis('IP change when session migration requested -- was: '.
+                 $data{'ip'}.'; now: '.$ENV{'REMOTE_ADDR'}.' 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'},$data{'domain'});
-    if ($home =~ /(con_lost|no_such_host)/) { return &goto_login($r); }
+    my $udom;
+    if (&Apache::lonnet::domain($data{'domain'})) {
+        $udom=$data{'domain'};
+    }
+    if ($home =~ /(con_lost|no_such_host)/) { return &goto_login($r,$udom,\%data); }
 
-    my $extra_env = &sso_check(\%data);
+    my $sso_env = &sso_check(\%data);
+    my $lti_env = &lti_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;
+    }
 
     my %form;
     if ($data{'symb'} ne '') {
@@ -239,13 +374,92 @@ sub handler {
     if ($data{'iptoken'} ne '') {
         $form{'iptoken'} = $data{'iptoken'};
     }
+    if ($data{'noloadbalance'} ne '') {
+        $form{'noloadbalance'} = $data{'noloadbalance'};
+    }
 
     if (!$data{'role'}) {
 	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 '') {
+            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($r,$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 '') {
                 $r->internal_redirect($data{'origurl'});
             } elsif ($env{'request.course.id'}) {
                 $r->internal_redirect('/adm/navmaps');
@@ -256,18 +470,33 @@ sub handler {
             my $desturl = '/adm/roles';
             if ($data{'origurl'} ne '') {
                 $desturl = $data{'origurl'};
+                if ($data{'lti.login'}) {
+                    $desturl = $data{'origurl'};
+                    if ($desturl =~ m{/default_\d+\.sequence$}) {
+                        $desturl .= (($desturl =~/\?/)?'&':'?').'navmap=1';
+                    }
+                }
+            }
+            my $skipcritical;
+            if (($data{'lti.login'}) && ($data{'lti.reqcrs'}) &&
+                ($data{'lti.reqrole'} eq 'cc')) {
+                $skipcritical = 1;
             }
 	    &Apache::lonauth::success($r,$data{'username'},$data{'domain'},
-				      $home,$desturl,$extra_env,\%form);
-
+				      $home,$desturl,$extra_env,\%form,$skipcritical);
 	}
 	return OK;
-
     }
 
-    my $next_url='/adm/roles?selectrole=1&amp;'.&escape($data{'role'}).'=1';
+    my $next_url='/adm/roles?selectrole=1&'.&escape($data{'role'}).'=1';
     if ($data{'origurl'} ne '') {
-        $next_url .= '&amp;orgurl='.&escape($data{'origurl'});
+        $next_url .= '&orgurl='.&escape($data{'origurl'});
+        if ($data{'lti.login'}) {
+            if (($data{'origurl'} =~ m{/default_\d+\.sequence$}) ||
+                ($data{'origurl'} =~ m{^/res/.+\.sequence$})) {
+                $next_url .= '&navmap=1';
+            }
+        }
     }
     &Apache::lonauth::success($r,$data{'username'},$data{'domain'},$home,
 			      $next_url,$extra_env,\%form);