--- loncom/lonnet/perl/lonnet.pm	2000/10/05 19:27:23	1.36
+++ loncom/lonnet/perl/lonnet.pm	2000/10/12 02:11:16	1.45
@@ -28,7 +28,7 @@
 # restore            : returns hash for this url
 # eget(namesp,array) : returns hash with keys from array filled in from namesp
 # get(namesp,array)  : returns hash with keys from array filled in from namesp
-# del(namesp,array)  : deletes keys out of arry from namesp
+# del(namesp,array)  : deletes keys out of array from namesp
 # put(namesp,hash)   : stores hash in namesp
 # dump(namesp)       : dumps the complete namespace into a hash
 # ssi(url,hash)      : does a complete request cycle on url to localhost, posts
@@ -36,10 +36,13 @@
 # coursedescription(id) : returns and caches course description for id
 # repcopy(filename)  : replicate file
 # dirlist(url)       : gets a directory listing
+# directcondval(index) : reading condition value of single condition from 
+#                        state string
 # condval(index)     : value of condition index based on state
 # varval(name)       : value of a variable
 # refreshstate()     : refresh the state information string
 # symblist(map,hash) : Updates symbolic storage links
+# symbread([filename]) : returns the data handle (filename optional)
 # rndseed()          : returns a random seed  
 # getfile(filename)  : returns the contents of filename, or a -1 if it can't
 #                      be found, replicates and subscribes to the file
@@ -59,7 +62,7 @@
 # 08/22,08/28,08/31,09/01,09/02,09/04,09/05,09/25,09/28,09/30 Gerd Kortemeyer
 # 10/04 Gerd Kortemeyer
 # 10/04 Guy Albertelli
-
+# 10/06,10/09,10/10,10/11 Gerd Kortemeyer
 
 package Apache::lonnet;
 
@@ -487,7 +490,7 @@ sub coursedescription {
            } split(/\&/,$rep);
            $returnhash{'url'}='/res/'.declutter($returnhash{'url'});
            $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
-	       $ENV{'user.name.'}.'_'.$cdomain.'_'.$cnum;
+	       $ENV{'user.name'}.'_'.$cdomain.'_'.$cnum;
 	   put ('coursedescriptions',%cachehash);
            return %returnhash;
        }
@@ -593,10 +596,11 @@ sub get {
                  $ENV{'user.home'});
    my @pairs=split(/\&/,$rep);
    my %returnhash=();
+   my $i=0;
    map {
-      my ($key,$value)=split(/=/,$_);
-      $returnhash{unescape($key)}=unescape($value);
-   } @pairs;
+      $returnhash{$_}=unescape($pairs[$i]);
+      $i++;
+   } @storearr;
    return %returnhash;
 }
 
@@ -654,10 +658,11 @@ sub eget {
                  $ENV{'user.home'});
    my @pairs=split(/\&/,$rep);
    my %returnhash=();
+   my $i=0;
    map {
-      my ($key,$value)=split(/=/,$_);
-      $returnhash{unescape($key)}=unescape($value);
-   } @pairs;
+      $returnhash{$_}=unescape($pairs[$i]);
+      $i++;
+   } @storearr;
    return %returnhash;
 }
 
@@ -756,7 +761,7 @@ sub allowed {
 # Restricted by state?
 
            if ($thisallowed=~/X/) {
-	      if (&condval($uricond)>1) {
+	      if (&condval($uricond)) {
 	         return '2';
               } else {
                  return '';
@@ -939,6 +944,15 @@ sub dirlist {
 
 # -------------------------------------------------------- Value of a Condition
 
+sub directcondval {
+    my $number=shift;
+    if ($ENV{'user.state.'.$ENV{'request.course.id'}}) {
+       return substr($ENV{'user.state.'.$ENV{'request.course.id'}},$number,1);
+    } else {
+       return 2;
+    }
+}
+
 sub condval {
     my $condidx=shift;
     my $result=0;
@@ -959,8 +973,7 @@ sub condval {
               } elsif (($_ eq '&') || ($_ eq '|')) {
                   $operand=$_;
               } else {
-                  my $new=
-                    substr($ENV{'user.state.'.$ENV{'request.course.id'}},$_,1);
+                  my $new=directcondval($_);
                   if ($operand eq '&') {
                      $result=$result>$new?$new:$result;
                   } else {
@@ -1016,25 +1029,65 @@ sub symblist {
 # ------------------------------------------------------ Return symb list entry
 
 sub symbread {
+    my $thisfn=shift;
+    unless ($thisfn) {
+	$thisfn=$ENV{'request.filename'};
+    }
+    $thisfn=declutter($thisfn);
     my %hash;
-    my $syval;
-    if (($ENV{'request.course.fn'}) && ($ENV{'request.filename'})) {
+    my %bighash;
+    my $syval='';
+    if (($ENV{'request.course.fn'}) && ($thisfn)) {
         if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',
                       &GDBM_READER,0640)) {
-            my $thisfn=declutter($ENV{'request.filename'});
 	    $syval=$hash{$thisfn};
-            if (untie(%hash)) {
-                unless ($syval=~/\_\d+$/) {
-		   unless ($ENV{'form.request.prefix'}=~/\.(\d+)\_$/) {
-                      return '';
-                   }    
-                   $syval.=$1;
-	        }
-                $syval.='___'.$thisfn;
-		return $syval;
-            }
+            untie(%hash);
         }
+# ---------------------------------------------------------- There was an entry
+        if ($syval) {
+           unless ($syval=~/\_\d+$/) {
+	       unless ($ENV{'form.request.prefix'}=~/\.(\d+)\_$/) {
+                  &appenv('request.ambiguous' => $thisfn);
+                  return '';
+               }    
+               $syval.=$1;
+	   }
+        } else {
+# ------------------------------------------------------- Was not in symb table
+           if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
+                            &GDBM_READER,0640)) {
+# ---------------------------------------------- Get ID(s) for current resource
+              my $ids=$bighash{'ids_/res/'.$thisfn};
+              if ($ids) {
+# ------------------------------------------------------------------- Has ID(s)
+                 my @possibilities=split(/\,/,$ids);
+                 if ($#possibilities==0) {
+# ----------------------------------------------- There is only one possibility
+		     my ($mapid,$resid)=split(/\./,$ids);
+                     $syval=declutter($bighash{'map_id_'.$mapid}).'___'.$resid;
+                 } else {
+# ------------------------------------------ There is more than one possibility
+                     my $realpossible=0;
+                     map {
+			 my $file=$bighash{'src_'.$_};
+                         if (&allowed('bre',$file)) {
+         		    my ($mapid,$resid)=split(/\./,$_);
+                            if ($bighash{'map_type_'.$mapid} ne 'page') {
+				$realpossible++;
+                                $syval=declutter($bighash{'map_id_'.$mapid}).
+                                       '___'.$resid;
+                            }
+			 }
+                     } @possibilities;
+		     if ($realpossible!=1) { $syval=''; }
+                 }
+	      }
+              untie(%bighash)
+           } 
+        }
+        if ($syval) { return $syval.'___'.$thisfn; }
     }
+    &appenv('request.ambiguous' => $thisfn);
     return '';
 }
 
@@ -1054,7 +1107,7 @@ sub numval {
 
 sub rndseed {
     my $symb;
-    unless ($symb=&symbread()) { return ''; }
+    unless ($symb=&symbread()) { return time; }
     my $symbchck=unpack("%32C*",$symb);
     my $symbseed=numval($symb)%$symbchck;
     my $namechck=unpack("%32C*",$ENV{'user.name'});
@@ -1071,10 +1124,7 @@ sub rndseed {
 # returns either the contents of the file or a -1
 sub getfile {
   my $file=shift;
-  if (! -e $file ) {
-    &subscribe($file);
-    &repcopy($file);
-  }
+  &repcopy($file);
   if (! -e $file ) { return -1; };
   my $fh=Apache::File->new($file);
   my $a='';