--- loncom/lonnet/perl/lonnet.pm	2016/01/31 21:25:57	1.1300
+++ loncom/lonnet/perl/lonnet.pm	2016/03/02 14:14:14	1.1301
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # TCP networking package
 #
-# $Id: lonnet.pm,v 1.1300 2016/01/31 21:25:57 raeburn Exp $
+# $Id: lonnet.pm,v 1.1301 2016/03/02 14:14:14 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -10312,6 +10312,13 @@ sub get_userresdata {
 #     $name      - Course/user name.
 #     $domain    - Name of the domain the user/course is registered on.
 #     $type      - Type of thing $name is (must be 'course' or 'user'
+#     $mapp      - decluttered URL of enclosing map  
+#     $recursed  - Ref to scalar -- set to 1, if nested maps have been recursed.
+#     $recurseup - Ref to array of map URLs, starting with map containing
+#                  $mapp up through hierarchy of nested maps to top level map.  
+#     $courseid  - CourseID (first part of param identifier).
+#     $modifier  - Middle part of param identifier.
+#     $what      - Last part of param identifier.
 #     @which     - Array of names of resources desired.
 #  Returns:
 #     The value of the first reasource in @which that is found in the
@@ -10321,7 +10328,8 @@ sub get_userresdata {
 #     'user', an undefined  reference is returned.
 #     If none of the resources are found, an undef is returned
 sub resdata {
-    my ($name,$domain,$type,@which)=@_;
+    my ($name,$domain,$type,$mapp,$recursed,$recurseup,$courseid,
+        $modifier,$what,@which)=@_;
     my $result;
     if ($type eq 'course') {
 	$result=&get_courseresdata($name,$domain);
@@ -10330,7 +10338,21 @@ sub resdata {
     }
     if (!ref($result)) { return $result; }    
     foreach my $item (@which) {
-	if (defined($result->{$item->[0]})) {
+        if ($item->[1] eq 'course') {
+            if ((ref($recurseup) eq 'ARRAY') && (ref($recursed) eq 'SCALAR')) {
+                unless ($$recursed) {
+                    @{$recurseup} = &get_map_hierarchy($mapp);
+                    $$recursed = 1;
+                }
+                foreach my $item (@${recurseup}) {
+                    my $norecursechk=$courseid.$modifier.$item.'___(all).'.$what;
+                    last if (defined($result->{$norecursechk}));
+                    my $recursechk=$courseid.$modifier.$item.'___(rec).'.$what;
+                    if (defined($result->{$recursechk})) { return [$result->{$recursechk},'map']; }
+                }
+            }
+        }
+        if (defined($result->{$item->[0]})) {
 	    return [$result->{$item->[0]},$item->[1]];
 	}
     }
@@ -10557,8 +10579,8 @@ sub EXT {
             }
         }
 
-	my ($section, $group, @groups);
-	my ($courselevelm,$courselevel);
+	my ($section, $group, @groups, @recurseup, $recursed);
+	my ($courselevelm,$courseleveli,$courselevel,$mapp);
         if (($courseid eq '') && ($cid)) {
             $courseid = $cid;
         }
@@ -10569,11 +10591,11 @@ sub EXT {
 
 # ----------------------------------------------------- Cascading lookup scheme
 	    my $symbp=$symbparm;
-	    my $mapp=&deversion((&decode_symb($symbp))[0]);
-
+	    $mapp=&deversion((&decode_symb($symbp))[0]);
+            @recurseup=();
 	    my $symbparm=$symbp.'.'.$spacequalifierrest;
+            my $recurseparm=$mapp.'___(rec).'.$spacequalifierrest;
 	    my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
-
 	    if (($env{'user.name'} eq $uname) &&
 		($env{'user.domain'} eq $udom)) {
 		$section=$env{'request.course.sec'};
@@ -10590,17 +10612,21 @@ sub EXT {
 
 	    my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
 	    my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
+            my $secleveli=$courseid.'.['.$section.'].'.$recurseparm;
 	    my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
 
 	    $courselevel=$courseid.'.'.$spacequalifierrest;
 	    my $courselevelr=$courseid.'.'.$symbparm;
+            $courseleveli=$courseid.'.'.$recurseparm;
 	    $courselevelm=$courseid.'.'.$mapparm;
 
 # ----------------------------------------------------------- first, check user
 
-	    my $userreply=&resdata($uname,$udom,'user',
+	    my $userreply=&resdata($uname,$udom,'user',$mapp,\$recursed,
+                                   \@recurseup,$courseid,'.',$spacequalifierrest, 
 				       ([$courselevelr,'resource'],
 					[$courselevelm,'map'     ],
+                                        [$courseleveli,'map'     ],
 					[$courselevel, 'course'  ]));
 	    if (defined($userreply)) { return &get_reply($userreply); }
 
@@ -10608,15 +10634,18 @@ sub EXT {
             my $coursereply;
             if (@groups > 0) {
                 $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
-                                       $mapparm,$spacequalifierrest);
-                if (defined($coursereply)) { return &get_reply($coursereply); }
+                                       $recurseparm,$mapparm,$spacequalifierrest,
+                                       $mapp,\$recursed,\@recurseup);
+                if (defined($coursereply)) { return &get_reply($coursereply); } 
             }
 
 	    $coursereply=&resdata($env{'course.'.$courseid.'.num'},
 				  $env{'course.'.$courseid.'.domain'},
-				  'course',
+				  'course',$mapp,\$recursed,\@recurseup,
+                                  $courseid,'.['.$section.'].',$spacequalifierrest,
 				  ([$seclevelr,   'resource'],
 				   [$seclevelm,   'map'     ],
+                                   [$secleveli,   'map'     ],
 				   [$seclevel,    'course'  ],
 				   [$courselevelr,'resource']));
 	    if (defined($coursereply)) { return &get_reply($coursereply); }
@@ -10633,8 +10662,9 @@ sub EXT {
 	    if ($thisparm) { return &get_reply([$thisparm,'resource']); }
 	}
 # ------------------------------------------ fourth, look in resource metadata
-
-	$spacequalifierrest=~s/\./\_/;
+ 
+        my $what = $spacequalifierrest;
+	$what=~s/\./\_/;
 	my $filename;
 	if (!$symbparm) { $symbparm=&symbread(); }
 	if ($symbparm) {
@@ -10642,18 +10672,20 @@ sub EXT {
 	} else {
 	    $filename=$env{'request.filename'};
 	}
-	my $metadata=&metadata($filename,$spacequalifierrest);
+	my $metadata=&metadata($filename,$what);
 	if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
-	$metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
+	$metadata=&metadata($filename,'parameter_'.$what);
 	if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
 
-# ---------------------------------------------- fourth, look in rest of course
+# ----------------------------------------------- fifth, look in rest of course
 	if ($symbparm && defined($courseid) && 
 	    $courseid eq $env{'request.course.id'}) {
 	    my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
 				     $env{'course.'.$courseid.'.domain'},
-				     'course',
+				     'course',$mapp,\$recursed,\@recurseup,
+                                     $courseid,'.',$spacequalifierrest,
 				     ([$courselevelm,'map'   ],
+                                      [$courseleveli,'map'   ],
 				      [$courselevel, 'course']));
 	    if (defined($coursereply)) { return &get_reply($coursereply); }
 	}
@@ -10710,22 +10742,40 @@ sub get_reply {
 }
 
 sub check_group_parms {
-    my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
-    my @groupitems = ();
-    my $resultitem;
-    my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
+    my ($courseid,$groups,$symbparm,$recurseparm,$mapparm,$what,$mapp,
+        $recursed,$recurseupref) = @_;
+    my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$recurseparm,'map'],
+                  [$what,'course']);
+    my $coursereply;
     foreach my $group (@{$groups}) {
+        my @groupitems = ();
         foreach my $level (@levels) {
              my $item = $courseid.'.['.$group.'].'.$level->[0];
              push(@groupitems,[$item,$level->[1]]);
         }
+        my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
+                                   $env{'course.'.$courseid.'.domain'},
+                                   'course',$mapp,$recursed,$recurseupref,
+                                   $courseid,'.['.$group.'].',$what,
+                                   @groupitems);
+        last if (defined($coursereply));
     }
-    my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
-                            $env{'course.'.$courseid.'.domain'},
-                                     'course',@groupitems);
     return $coursereply;
 }
 
+sub get_map_hierarchy {
+    my ($mapname) = @_;
+    my @recurseup = (); 
+    if ($mapname) {
+        my $navmap = Apache::lonnavmaps::navmap->new();
+        if (ref($navmap)) {
+            @recurseup = $navmap->recurseup_maps($mapname);
+            undef($navmap);
+        }
+    }
+    return @recurseup;
+}
+
 sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
     my ($courseid,@groups) = @_;
     @groups = sort(@groups);