--- loncom/lonnet/perl/lonnet.pm	2000/10/12 02:11:16	1.45
+++ loncom/lonnet/perl/lonnet.pm	2000/10/25 20:52:31	1.49
@@ -25,11 +25,13 @@
 # revokecustomrole (udom,uname,url,rdom,rnam,rolename) : Revoke a custom role
 # appenv(hash)       : adds hash to session environment
 # store(hash)        : stores hash permanently for this url
+# cstore(hash)       : critical store
 # 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 array from namesp
 # put(namesp,hash)   : stores hash in namesp
+# cput(namesp,hash)  : critical put
 # dump(namesp)       : dumps the complete namespace into a hash
 # ssi(url,hash)      : does a complete request cycle on url to localhost, posts
 #                      hash
@@ -48,6 +50,8 @@
 #                      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
+# log(domain,user,home,msg) : write to permanent log for user
 #
 # 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 +66,7 @@
 # 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
+# 10/06,10/09,10/10,10/11,10/14,10/20,10/23,10/25 Gerd Kortemeyer
 
 package Apache::lonnet;
 
@@ -423,7 +427,7 @@ sub ssi {
 
 sub log {
     my ($dom,$nam,$hom,$what)=@_;
-    return reply("log:$dom:$nam:$what",$hom);
+    return critical("log:$dom:$nam:$what",$hom);
 }
 
 # ----------------------------------------------------------------------- Store
@@ -444,6 +448,24 @@ sub store {
 		 "$ENV{'user.home'}");
 }
 
+# -------------------------------------------------------------- Critical Store
+
+sub cstore {
+    my %storehash=@_;
+    my $symb;
+    unless ($symb=escape(&symbread())) { return ''; }
+    my $namespace;
+    unless ($namespace=$ENV{'request.course.id'}) { return ''; }
+    my $namevalue='';
+    map {
+        $namevalue.=escape($_).'='.escape($storehash{$_}).'&';
+    } keys %storehash;
+    $namevalue=~s/\&$//;
+    return critical(
+     "store:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$symb:$namevalue",
+		 "$ENV{'user.home'}");
+}
+
 # --------------------------------------------------------------------- Restore
 
 sub restore {
@@ -470,6 +492,7 @@ sub restore {
 sub coursedescription {
     my $courseid=shift;
     $courseid=~s/^\///;
+    $courseid=~s/\_/\//g;
     my ($cdomain,$cnum)=split(/\//,$courseid);
     my $chome=homeserver($cnum,$cdomain);
     if ($chome ne 'no_host') {
@@ -645,6 +668,20 @@ sub put {
                  $ENV{'user.home'});
 }
 
+# ------------------------------------------------------ critical put interface
+
+sub cput {
+   my ($namespace,%storehash)=@_;
+   my $items='';
+   map {
+       $items.=escape($_).'='.escape($storehash{$_}).'&';
+   } keys %storehash;
+   $items=~s/\&$//;
+   return critical
+           ("put:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$items",
+                 $ENV{'user.home'});
+}
+
 # -------------------------------------------------------------- eget interface
 
 sub eget {
@@ -990,20 +1027,84 @@ sub condval {
 # --------------------------------------------------------- Value of a Variable
 
 sub varval {
-    my ($realm,$space,@components)=split(/\./,shift);
-    my $value='';
+    my $varname=shift;
+    my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
+    my $rest;
+    if ($therest[0]) {
+       $rest=join('.',@therest);
+    } else {
+       $rest='';
+    }
     if ($realm eq 'user') {
-	if ($space=~/^resource/) {
-	    $space=~s/^resource\[//;
-            $space=~s/\]$//;
-
+# --------------------------------------------------------------- user.resource
+	if ($space eq 'resource') {
+# ----------------------------------------------------------------- user.access
+        } elsif ($space eq 'access') {
+            return &allowed($qualifier,$rest);
+# ------------------------------------------ user.preferences, user.environment
+        } elsif (($space eq 'preferences') || ($space eq 'environment')) {
+            return $ENV{join('.',('environment',$qualifier,$rest))};
+# ----------------------------------------------------------------- user.course
+        } elsif ($space eq 'course') {
+            return $ENV{join('.',('request.course',$qualifier))};
+# ------------------------------------------------------------------- user.role
+        } elsif ($space eq 'role') {
+            my ($role,$where)=split(/\./,$ENV{'request.role'});
+            if ($qualifier eq 'value') {
+		return $role;
+            } elsif ($qualifier eq 'extent') {
+                return $where;
+            }
+# ----------------------------------------------------------------- user.domain
+        } elsif ($space eq 'domain') {
+            return $ENV{'user.domain'};
+# ------------------------------------------------------------------- user.name
+        } elsif ($space eq 'name') {
+            return $ENV{'user.name'};
+# ---------------------------------------------------- Any other user namespace
         } else {
+            my $item=($rest)?$qualifier.'.'.$rest:$qualifier;
+            my %reply=&get($space,$item);
+            return $reply{$item};
+        }
+    } elsif ($realm eq 'request') {
+# ------------------------------------------------------------- request.browser
+        if ($space eq 'browser') {
+	    return $ENV{'browser.'.$qualifier};
+        } elsif ($space eq 'filename') {
+            return $ENV{'request.filename'};
         }
     } elsif ($realm eq 'course') {
-    } elsif ($realm eq 'session') {
+# ---------------------------------------------------------- course.description
+        if ($space eq 'description') {
+            my %reply=&coursedescription($ENV{'request.course.id'});
+            return $reply{'description'};
+# ------------------------------------------------------------------- course.id
+        } elsif ($space eq 'id') {
+            return $ENV{'request.course.id'};
+# -------------------------------------------------- Any other course namespace
+        } else {
+	    my ($cdom,$cnam)=split(/\_/,$ENV{'request.course.id'});
+	    my $chome=&homeserver($cnam,$cdom);
+            my $item=join('.',($qualifier,$rest));
+            return &unescape
+                   (&reply('get:'.$cdom.':'.$cnam.':'.&escape($space).':'.
+			   &escape($item),$chome));
+        }
+    } elsif ($realm eq 'userdata') {
+        my $uhome=&homeserver($qualifier,$space);
+# ----------------------------------------------- userdata.domain.name.resource
+# ---------------------------------------------------- Any other user namespace
+    } elsif ($realm eq 'environment') {
+# ----------------------------------------------------------------- environment
+        return $ENV{join('.',($space,$qualifier,$rest))};
     } elsif ($realm eq 'system') {
+# ----------------------------------------------------------------- system.time
+	if ($space eq 'time') {
+	    return time;
+        }
     }
-    return $value;
+    return '';
 }
 
 # ------------------------------------------------- Update symbolic store links
@@ -1144,11 +1245,21 @@ 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 {