--- rat/lonuserstate.pm	2003/10/23 21:01:54	1.63
+++ rat/lonuserstate.pm	2004/04/23 15:43:41	1.74
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Construct and maintain state and binary representation of course for user
 #
-# $Id: lonuserstate.pm,v 1.63 2003/10/23 21:01:54 albertel Exp $
+# $Id: lonuserstate.pm,v 1.74 2004/04/23 15:43:41 www Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -25,22 +25,6 @@
 #
 # http://www.lon-capa.org/
 #
-# (Server for RAT Maps
-#
-# (Edit Handler for RAT Maps
-# (TeX Content Handler
-#
-# YEAR=2000
-# 05/29/00,05/30 Gerd Kortemeyer)
-# 7/1 Gerd Kortemeyer)
-# 7/1,7/3,7/4,7/7,7/8,7/10 Gerd Kortemeyer)
-#
-# 7/15,7/17,7/18,8/1,8/2,8/4,8/5,8/21,8/22,8/23,8/30,
-# 9/2,9/4,9/29,9/30,10/2,10/11,10/30,10/31,
-# 11/1,11/2,11/14,11/16,11/22,12/28,
-# YEAR=2001
-# 07/05/01,08/30,08/31 Gerd Kortemeyer
-#
 ###
 
 package Apache::lonuserstate;
@@ -57,6 +41,7 @@ use Apache::lonmsg;
 use Safe;
 use Safe::Hole;
 use Opcode;
+use Apache::lonenc;
 
 # ---------------------------------------------------- Globals for this package
 
@@ -68,6 +53,8 @@ my $errtext; # variable with all errors
 my $retfurl; # variable with the very first URL in the course
 my %randompick; # randomly picked resources
 my %randompickseed; # optional seed for randomly picking resources
+my %encurl; # URLs in this folder are supposed to be encrypted
+my %hiddenurl; # this URL (or complete folder) is supposed to be hidden
 
 # ----------------------------------- Remove version from URL and store in hash
 
@@ -89,7 +76,10 @@ sub putinversion {
     my $uri=shift;
     if ($hash{'version_'.$uri}) {
 	my $version=$hash{'version_'.$uri};
-	if ($version eq 'current') { return $uri; }
+	if ($version eq 'mostrecent') { return $uri; }
+	if ($version eq &Apache::lonnet::getversion(
+			&Apache::lonnet::filelocation('',$uri))) 
+	             { return $uri; }
 	$uri=~s/\.(\w+)$/\.$version\.$1/;
     }
     return $uri;
@@ -98,7 +88,7 @@ sub putinversion {
 # ----------------------------------------- Processing versions file for course
 
 sub processversionfile {
-    my %cenv=shift;
+    my %cenv=@_;
     my %versions=&Apache::lonnet::dump('resourceversions',
 				       $cenv{'domain'},
 				       $cenv{'num'});
@@ -172,21 +162,28 @@ sub loadmap {
                         } elsif ($turi=~/^\/*uploaded\//) { # uploaded
 			    if (($embstyle eq 'img') || ($embstyle eq 'emb')
                              || ($embstyle eq 'ssi')) {
-                                $turi='/adm/wrapper'.$turi;
+                                unless ($turi =~/\.page$/) {
+                                    $turi='/adm/wrapper'.$turi;
+                                }
                             } elsif ($turi!~/\.(sequence|page)$/) {
 				$turi='/adm/coursedocs/showdoc'.$turi;
                             }
-                        } else { # normal internal resource
-                           if (($embstyle eq 'img') || ($embstyle eq 'emb')) {
-			       $turi='/adm/wrapper'.$turi;
-                           }
+                        } elsif ($turi=~/\S/) { # normal non-empty internal resource
+			    my $mapdir=$uri;
+			    $mapdir=~s/[^\/]+$//;
+			    $turi=&Apache::lonnet::hreflocation($mapdir,$turi);
+			    if (($embstyle eq 'img') || ($embstyle eq 'emb')) {
+				$turi='/adm/wrapper'.$turi;
+			    }
                         }
 		    }
-
-                    if (defined($hash{'ids_'.$turi})) {
-                        $hash{'ids_'.$turi}.=','.$rid;
+# Store reverse lookup, remove query string
+		    my $idsuri=$turi;
+		    $idsuri=~s/\?.+$//;
+                    if (defined($hash{'ids_'.$idsuri})) {
+                        $hash{'ids_'.$idsuri}.=','.$rid;
                     } else {
-                        $hash{'ids_'.$turi}=''.$rid;
+                        $hash{'ids_'.$idsuri}=''.$rid;
                     }
                
                     if
@@ -291,6 +288,16 @@ sub loadmap {
                     if ($token->[2]->{'name'} eq 'parameter_randompickseed') {
 			$randompick{$referid}=$token->[2]->{'value'};
                     }
+                    if ($token->[2]->{'name'} eq 'parameter_encrypturl') {
+			if ($token->[2]->{'value'}=~/^yes$/i) {
+			    $encurl{$referid}=1;
+			}
+                    }
+                    if ($token->[2]->{'name'} eq 'parameter_hiddenresource') {
+			if ($token->[2]->{'value'}=~/^yes$/i) {
+			    $hiddenurl{$referid}=1;
+			}
+                    }
                 } 
 
             }
@@ -460,9 +467,9 @@ sub accinit {
                             "request.course.uri" => $courseuri); 
 }
 
-# ------------------------------------- Selectively delete from randompick maps
+# ---------------- Selectively delete from randompick maps and hidden url parms
 
-sub pickrandom {
+sub hiddenurls {
     my $randomoutentry='';
     foreach my $rid (keys %randompick) {
         my $rndpick=$randompick{$rid};
@@ -504,6 +511,18 @@ sub pickrandom {
             }
         }
     }
+# ------------------------------ take care of explicitly hidden urls or folders
+    foreach my $rid (keys %hiddenurl) {
+	$hash{'randomout_'.$rid}=1;
+	my ($mapid,$resid)=split(/\./,$rid);
+	$randomoutentry.='&'.
+	    &Apache::lonnet::symbclean(
+		         &Apache::lonnet::declutter($hash{'map_id_'.$mapid}).
+				       '___'.$resid.'___'.
+		    &Apache::lonnet::declutter($hash{'src_'.$rid})
+				       ).'&';
+    }
+# --------------------------------------- append randomout entry to environment
     if ($randomoutentry) {
 	&Apache::lonnet::appenv('acc.randomout' => $randomoutentry);
     }
@@ -529,6 +548,8 @@ sub readmap {
    unlink($fn.'.state');
    unlink($fn.'parms.db');
    undef %randompick;
+   undef %hiddenurl;
+   undef %encurl;
    $retfurl='';
    if ((tie(%hash,'GDBM_File',"$fn.db",&GDBM_WRCREAT(),0640)) &&
        (tie(%parmhash,'GDBM_File',$fn.'_parms.db',&GDBM_WRCREAT(),0640))) {
@@ -546,7 +567,7 @@ sub readmap {
     if (defined($hash{'map_start_'.$uri})) {
         &traceroute('0',$hash{'map_start_'.$uri},'&');
         &accinit($uri,$short,$fn);
-        &pickrandom();
+        &hiddenurls();
     }
 # ------------------------------------------------------- Put versions into src
     foreach (keys %hash) {
@@ -554,10 +575,17 @@ sub readmap {
 	    $hash{$_}=&putinversion($hash{$_});
 	}
     }
+# ---------------------------------------------------------------- Encrypt URLs
+    foreach (keys %encurl) {
+	$hash{'src_'.$_}=&Apache::lonenc::encrypted($hash{'src_'.$_});
+    }
+# ----------------------------------------------- Close hashes to finally store
+# --------------------------------- Routine must pass this point, no early outs
     unless ((untie(%hash)) && (untie(%parmhash))) {
       &Apache::lonnet::logthis("<font color=blue>WARNING: ".
                        "Could not untie coursemap $fn for $uri.</font>"); 
     }
+# ---------------------------------------------------- Store away initial state
     {
      my $cfh;
      if ($cfh=Apache::File->new(">$fn.state")) {