--- loncom/auth/switchserver.pm	2017/02/25 20:00:36	1.36
+++ loncom/auth/switchserver.pm	2017/11/30 15:14:51	1.38
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Switch Servers Handler
 #
-# $Id: switchserver.pm,v 1.36 2017/02/25 20:00:36 raeburn Exp $
+# $Id: switchserver.pm,v 1.38 2017/11/30 15:14:51 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -129,8 +129,12 @@ sub handler {
                     $skip_canhost_check = 1;
                 }
             } elsif ($env{'form.role'} =~ m{^[ac]a\./($match_domain)/($match_username)$}) {
-                if (&Apache::lonnet::homeserver($2,$1) eq $env{'form.otherserver'}) {
-                    $skip_canhost_check = 1; 
+                my ($audom,$auname) = ($1,$2);
+                if (&Apache::lonnet::homeserver($auname,$audom) eq $env{'form.otherserver'}) {
+                    if ((&Apache::lonnet::will_trust('othcoau',$audom,$env{'user.domain'})) &&
+                        (&Apache::lonnet::will_trust('coremau',$env{'user.domain'},$audom))) {                             
+                        $skip_canhost_check = 1;
+                    }
                 }
             }
         }
@@ -224,6 +228,21 @@ sub handler {
     if ($env{'request.sso.reloginserver'}) {
         $info{'sso.reloginserver'} = $env{'request.sso.reloginserver'};
     }
+    if ($env{'request.lti.login'}) {
+        $info{'lti.login'} = $env{'request.lti.login'};
+    }
+    if ($env{'request.lti.passbackid'}) {
+        $info{'lti.passbackid'} = $env{'request.lti.passbackid'};
+    }
+    if ($env{'request.lti.passbackurl'}) {
+        $info{'lti.passbackurl'} = $env{'request.lti.passbackurl'};
+    }
+    if ($env{'request.lti.rosterid'}) {
+        $info{'lti.rosterid'} = $env{'request.lti.rosterid'};
+    }
+    if ($env{'request.lti.rosterurl'}) {
+        $info{'lti.rosterurl'} = $env{'request.lti.rosterurl'};
+    }
     my $token = &Apache::lonnet::tmpput(\%info,$env{'form.otherserver'});
     my $url =$protocol.'://'.$switch_to.'/adm/login?'.
 	'domain='.$env{'user.domain'}.