--- loncom/lonnet/perl/lonnet.pm	2000/10/10 18:46:53	1.42
+++ loncom/lonnet/perl/lonnet.pm	2000/10/16 09:42:50	1.46
@@ -42,12 +42,13 @@
 # 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
+# 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
 # filelocation(dir,file) : returns a farily clean absolute reference to file 
 #                          from the directory dir
+# hreflocation(dir,file) : same as filelocation, but for hrefs
 #
 # 6/1/99,6/2,6/10,6/11,6/12,6/14,6/26,6/28,6/29,6/30,
 # 7/1,7/2,7/9,7/10,7/12,7/14,7/15,7/19,
@@ -62,7 +63,7 @@
 # 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 Gerd Kortemeyer
+# 10/06,10/09,10/10,10/11,10/14 Gerd Kortemeyer
 
 package Apache::lonnet;
 
@@ -431,7 +432,7 @@ sub log {
 sub store {
     my %storehash=@_;
     my $symb;
-    unless ($symb=escape(&symbread($ENV{'request.filename'}))) { return ''; }
+    unless ($symb=escape(&symbread())) { return ''; }
     my $namespace;
     unless ($namespace=$ENV{'request.course.id'}) { return ''; }
     my $namevalue='';
@@ -448,7 +449,7 @@ sub store {
 
 sub restore {
     my $symb;
-    unless ($symb=escape(&symbread($ENV{'request.filename'}))) { return ''; }
+    unless ($symb=escape(&symbread())) { return ''; }
     my $namespace;
     unless ($namespace=$ENV{'request.course.id'}) { return ''; }
     my $answer=reply(
@@ -1029,11 +1030,15 @@ sub symblist {
 # ------------------------------------------------------ Return symb list entry
 
 sub symbread {
-    my $thisfn=declutter(shift);
+    my $thisfn=shift;
+    unless ($thisfn) {
+	$thisfn=$ENV{'request.filename'};
+    }
+    $thisfn=declutter($thisfn);
     my %hash;
     my %bighash;
     my $syval='';
-    if (($ENV{'request.course.fn'}) && ($ENV{'request.filename'})) {
+    if (($ENV{'request.course.fn'}) && ($thisfn)) {
         if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',
                       &GDBM_READER,0640)) {
 	    $syval=$hash{$thisfn};
@@ -1043,6 +1048,7 @@ sub symbread {
         if ($syval) {
            unless ($syval=~/\_\d+$/) {
 	       unless ($ENV{'form.request.prefix'}=~/\.(\d+)\_$/) {
+                  &appenv('request.ambiguous' => $thisfn);
                   return '';
                }    
                $syval.=$1;
@@ -1082,6 +1088,7 @@ sub symbread {
         }
         if ($syval) { return $syval.'___'.$thisfn; }
     }
+    &appenv('request.ambiguous' => $thisfn);
     return '';
 }
 
@@ -1101,7 +1108,7 @@ sub numval {
 
 sub rndseed {
     my $symb;
-    unless ($symb=&symbread($ENV{'request.filename'})) { return ''; }
+    unless ($symb=&symbread()) { return time; }
     my $symbchck=unpack("%32C*",$symb);
     my $symbseed=numval($symb)%$symbchck;
     my $namechck=unpack("%32C*",$ENV{'user.name'});
@@ -1138,11 +1145,21 @@ sub filelocation {
     $location = '/home/httpd/html/res'.$file;
   }
   $location=~s://+:/:g; # remove duplicate /
-  while ($location=~m:/../:) {$location=~ s:/[^/]+/\.\./:/:g;} #remove dir/..
-
+  while ($location=~m:/\.\./:) {$location=~ s:/[^/]+/\.\./:/:g;} #remove dir/..
   return $location;
 }
 
+sub hreflocation {
+    my ($dir,$file)=@_;
+    unless (($_=~/^http:\/\//i) || ($_=~/^\//)) {
+       my $finalpath=filelocation($dir,$file);
+       $finalpath=~s/^\/home\/httpd\/html//;
+       return $finalpath;
+    } else {
+       return $file;
+    }
+}
+
 # ------------------------------------------------------------- Declutters URLs
 
 sub declutter {