--- loncom/auth/migrateuser.pm	2018/12/07 23:33:55	1.41
+++ loncom/auth/migrateuser.pm	2018/12/26 20:10:21	1.42
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Starts a user off based of an existing token.
 #
-# $Id: migrateuser.pm,v 1.41 2018/12/07 23:33:55 raeburn Exp $
+# $Id: migrateuser.pm,v 1.42 2018/12/26 20:10:21 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -672,6 +672,29 @@ sub handler {
 	if ($handle) {
 	    &Apache::lonnet::transfer_profile_to_env($r->dir_config('lonIDsDir'),
 						     $handle);
+            if ($data{'linkprot'} ne '') {
+                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' => $deeplink});
+                }
+            }
             if ($data{'lti.login'}) {
                 my $needslogout;
                 if ($env{'request.lti.login'}) {
@@ -765,6 +788,18 @@ sub handler {
                         $desturl .= (($desturl =~/\?/)?'&':'?').'navmap=1';
                     }
                 }
+                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;
+                        } else {
+                            $extra_env = {'user.linkprotector' => $linkprotector,
+                                          'user.linkproturi' => $linkuri,};
+                        }
+                    }
+                }
             }
             my $skipcritical;
             if (($data{'lti.login'}) && ($data{'lti.reqcrs'}) &&