--- loncom/interface/lonnavmaps.pm	2016/11/22 00:43:12	1.525
+++ loncom/interface/lonnavmaps.pm	2017/02/20 18:29:22	1.528
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Navigate Maps Handler
 #
-# $Id: lonnavmaps.pm,v 1.525 2016/11/22 00:43:12 raeburn Exp $
+# $Id: lonnavmaps.pm,v 1.528 2017/02/20 18:29:22 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -1684,6 +1684,18 @@ END
 	undef($args->{'sort'});
     }
 
+    # Determine if page will be served with https in case
+    # it contains a syllabus which uses an external URL
+    # which points at an http site.
+
+    my ($is_ssl,$cdom,$cnum);
+    if ($ENV{'SERVER_PORT'} == 443) {
+        $is_ssl = 1;
+    }
+    if ($env{'request.course.id'}) {
+        $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
+        $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
+    }
 
     while (1) {
 	if ($args->{'sort'}) {
@@ -1817,8 +1829,19 @@ END
 		$stack=$it->getStack();
 	    }
 	    ($src,$symb,$anchor)=getLinkForResource($stack);
+            my $srcHasQuestion = $src =~ /\?/;
+            if ($env{'request.course.id'}) {
+                if (($src =~ m{^\Q/public/$cdom/$cnum/syllabus\E($|\?)}) && ($is_ssl) &&
+                    ($env{'course.'.$env{'request.course.id'}.'.externalsyllabus'} =~ m{^http://})) {
+                    my $hostname = $r->hostname();
+                    if ($hostname ne '') {
+                        $src = 'http://'.$hostname.$src;
+                    }
+                    $src .= ($srcHasQuestion? '&' : '?') . 'usehttp=1';
+                    $srcHasQuestion = 1;
+                }
+            }
 	    if (defined($anchor)) { $anchor='#'.$anchor; }
-	    my $srcHasQuestion = $src =~ /\?/;
 	    $args->{"resourceLink"} = $src.
 		($srcHasQuestion?'&':'?') .
 		'symb=' . &escape($symb).$anchor;
@@ -2688,7 +2711,13 @@ sub parmval_real {
         }
         foreach my $item (@recurseup) {
             my $norecursechk=$usercourseprefix.'.'.$item.'___(all).'.$what;
-            last if (defined($$useropt{$norecursechk}));
+            if (defined($$useropt{$norecursechk})) {
+                if ($what =~ /\.(encrypturl|hiddenresource)$/) {
+                    return [$$useropt{$norecursechk},'map'];
+                } else {
+                    last;
+                }
+            }
             my $recursechk=$usercourseprefix.'.'.$item.'___(rec).'.$what;
             if (defined($$useropt{$recursechk})) { return [$$useropt{$recursechk},'map']; } 
         }
@@ -2706,7 +2735,13 @@ sub parmval_real {
         }
         foreach my $item (@recurseup) {
             my $norecursechk=$usercourseprefix.'.['.$cgroup.'].'.$item.'___(all).'.$what;
-            last if (defined($$courseopt{$norecursechk}));
+            if (defined($$courseopt{$norecursechk})) {
+                if ($what =~ /\.(encrypturl|hiddenresource)$/) {
+                    return [$$courseopt{$norecursechk},'map'];
+                } else {
+                   last;
+                }
+            }
             my $recursechk=$usercourseprefix.'.['.$cgroup.'].'.$item.'___(rec).'.$what;
             if (defined($$courseopt{$recursechk})) { return [$$courseopt{$recursechk},'map']; }      
         }
@@ -2723,7 +2758,13 @@ sub parmval_real {
         }
         foreach my $item (@recurseup) {
             my $norecursechk=$usercourseprefix.'.['.$csec.'].'.$item.'___(all).'.$what;
-            last if (defined($$courseopt{$norecursechk}));
+            if (defined($$courseopt{$norecursechk})) {
+                if ($what =~ /\.(encrypturl|hiddenresource)$/) {
+                    return [$$courseopt{$norecursechk},'map'];
+                } else {
+                    last;
+                }
+            }
             my $recursechk=$usercourseprefix.'.['.$csec.'].'.$item.'___(rec).'.$what;
             if (defined($$courseopt{$recursechk})) { return [$$courseopt{$recursechk},'map']; }
         }
@@ -2757,7 +2798,13 @@ sub parmval_real {
         }
         foreach my $item (@recurseup) {
             my $norecursechk=$usercourseprefix.'.'.$item.'___(all).'.$what;
-            last if (defined($$courseopt{$norecursechk}));
+            if (defined($$courseopt{$norecursechk})) {
+                if ($what =~ /\.(encrypturl|hiddenresource)$/) {
+                    return [$$courseopt{$norecursechk},'map'];
+                } else {
+                    last;
+                }
+            }
             my $recursechk=$usercourseprefix.'.'.$item.'___(rec).'.$what;
             if (defined($$courseopt{$recursechk})) {
                 return [$$courseopt{$recursechk},'map'];
@@ -2896,7 +2943,13 @@ sub get_mapparam {
         }
         foreach my $item (@recurseup) {
             my $norecursechk=$usercourseprefix.'.'.$item.'___(all).'.$what;
-            last if (defined($$useropt{$norecursechk}));
+            if (defined($$useropt{$norecursechk})) {
+                if ($what =~ /\.(encrypturl|hiddenresource)$/) {
+                    return $$useropt{$norecursechk};
+                } else {
+                    last;
+                }
+            }
             my $recursechk=$usercourseprefix.'.'.$item.'___(rec).'.$what;
             if (defined($$useropt{$recursechk})) {
                 return $$useropt{$recursechk};
@@ -2921,7 +2974,13 @@ sub get_mapparam {
         }
         foreach my $item (@recurseup) {
             my $norecursechk=$usercourseprefix.'.['.$cgroup.'].'.$item.'___(all).'.$what;
-            last if (defined($$courseopt{$norecursechk}));
+            if (defined($$courseopt{$norecursechk})) {
+                if ($what =~ /\.(encrypturl|hiddenresource)$/) {
+                    return $$courseopt{$norecursechk};
+                } else {
+                    last;
+                }
+            }
             my $recursechk=$usercourseprefix.'.['.$cgroup.'].'.$item.'___(rec).'.$what;
             if (defined($$courseopt{$recursechk})) {
                 return $$courseopt{$recursechk};
@@ -2945,7 +3004,13 @@ sub get_mapparam {
         }
         foreach my $item (@recurseup) {
             my $norecursechk=$usercourseprefix.'.['.$csec.'].'.$item.'___(all).'.$what;
-            last if (defined($$courseopt{$norecursechk}));
+            if (defined($$courseopt{$norecursechk})) {
+                if ($what =~ /\.(encrypturl|hiddenresource)$/) {
+                    return $$courseopt{$norecursechk};
+                } else {
+                    last;
+                }
+            }
             my $recursechk=$usercourseprefix.'.['.$csec.'].'.$item.'___(rec).'.$what;
             if (defined($$courseopt{$recursechk})) {
                 return $$courseopt{$recursechk};
@@ -2976,7 +3041,13 @@ sub get_mapparam {
         if (@recurseup) {
             foreach my $item (@recurseup) {
                 my $norecursechk=$usercourseprefix.'.'.$item.'___(all).'.$what;
-                last if (defined($$courseopt{$norecursechk}));
+                if (defined($$courseopt{$norecursechk})) {
+                    if ($what =~ /\.(encrypturl|hiddenresource)$/) {
+                        return $$courseopt{$norecursechk};
+                    } else {
+                        last;
+                    }
+                }
                 my $recursechk=$usercourseprefix.'.'.$item.'___(rec).'.$what;
                 if (defined($$courseopt{$recursechk})) {
                     return $$courseopt{$recursechk};