--- loncom/lonnet/perl/lonnet.pm	2003/05/08 21:50:54	1.370
+++ loncom/lonnet/perl/lonnet.pm	2003/06/17 01:38:14	1.380
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # TCP networking package
 #
-# $Id: lonnet.pm,v 1.370 2003/05/08 21:50:54 albertel Exp $
+# $Id: lonnet.pm,v 1.380 2003/06/17 01:38:14 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -243,6 +243,26 @@ sub critical {
     }
     return $answer;
 }
+ 
+# ------------------------------------------- Transfer profile into environment
+
+sub transfer_profile_to_env {
+    my ($lonidsdir,$handle)=@_;
+    my @profile;
+    {
+	my $idf=Apache::File->new("$lonidsdir/$handle.id");
+	flock($idf,LOCK_SH);
+	@profile=<$idf>;
+	$idf->close();
+    }
+    my $envi;
+    for ($envi=0;$envi<=$#profile;$envi++) {
+	chomp($profile[$envi]);
+	my ($envname,$envvalue)=split(/=/,$profile[$envi]);
+	$ENV{$envname} = $envvalue;
+    }
+    $ENV{'user.environment'} = "$lonidsdir/$handle.id";
+}
 
 # ---------------------------------------------------------- Append Environment
 
@@ -358,15 +378,16 @@ sub userload {
 	while ($filename=readdir(LONIDS)) {
 	    if ($filename eq '.' || $filename eq '..') {next;}
 	    my ($atime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[8];
-	    if ($curtime-$atime < 3600) { $num_users++; }
+	    if ($curtime-$atime < 3600) { $numusers++; }
 	}
 	closedir(LONIDS);
     }
     my $userloadpercent=0;
     my $maxuserload=$perlvar{'lonUserLoadLim'};
     if ($maxuserload) {
-	$userloadpercent=100*$num_users/$maxuserload;
+	$userloadpercent=100*$numusers/$maxuserload;
     }
+    $userloadpercent=sprintf("%.2f",$userloadpercent);
     return $userloadpercent;
 }
 
@@ -1259,8 +1280,8 @@ sub get_course_adv_roles {
         } else {
             $returnhash{$key}=$username.':'.$domain;
         }
-    }
-    return sort %returnhash;
+     }
+    return %returnhash;
 }
 
 # ---------------------------------------------------------- Course ID routines
@@ -1622,7 +1643,7 @@ sub tmpreset {
   my ($symb,$namespace,$domain,$stuname) = @_;
   if (!$symb) {
     $symb=&symbread();
-    if (!$symb) { $symb= $ENV{'REQUEST_URI'}; }
+    if (!$symb) { $symb= $ENV{'request.url'}; }
   }
   $symb=escape($symb);
 
@@ -2640,7 +2661,7 @@ sub assignrole {
     } else {
         my $cwosec=$url;
         $cwosec=~s/^\/(\w+)\/(\w+)\/.*/$1\/$2/;
-        unless (&allowed('c'.$role,$cwosec)) { 
+        unless ((&allowed('c'.$role,$cwosec)) || &allowed('c'.$role,$udom)) { 
            &logthis('Refused assignrole: '.
              $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
 		    $ENV{'user.name'}.' at '.$ENV{'user.domain'});
@@ -2660,10 +2681,11 @@ sub assignrole {
     }
 # actually delete
     if ($deleteflag) {
-	if (&allowed('dro',$udom)) {
+	if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
 # modify command to delete the role
            $command="encrypt:rolesdel:$ENV{'user.domain'}:$ENV{'user.name'}:".
                 "$udom:$uname:$url".'_'."$mrole";
+	   &logthis("$ENV{'user.name'} at $ENV{'user.domain'} deletes $mrole in $url for $uname at $udom"); 
 # set start and finish to negative values for userrolelog
            $start=-1;
            $end=-1;
@@ -3062,12 +3084,12 @@ sub GetFileTimestamp {
     $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
     my $proname="$studentDomain/$subdir/$studentName";
     $proname .= '/'.$filename;
-    my @dir = &Apache::lonnet::dirlist($proname, $studentDomain, $studentName,
-                                       $root);
-    my $fileStat = $dir[0];
+    my ($fileStat) = &Apache::lonnet::dirlist($proname, $studentDomain, 
+                                              $studentName, $root);
     my @stats = split('&', $fileStat);
     if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
-        return $stats[9];
+        # @stats contains first the filename, then the stat output
+        return $stats[10]; # so this is 10 instead of 9.
     } else {
         return -1;
     }
@@ -3163,10 +3185,34 @@ sub courseresdata {
     return undef;
 }
 
-# --------------------------------------------------------- Value of a Variable
+#
+# EXT resource caching routines
+#
 
+sub clear_EXT_cache_status {
+    &delenv('cache.');
+}
+
+sub EXT_cache_status {
+    my ($target_domain,$target_user) = @_;
+    my $cachename = 'cache.'.$target_user.'.'.$target_domain;
+    if (exists($ENV{$cachename}) && ($ENV{$cachename}+1800) > time) {
+        # We know already the user has no data
+        return 1;
+    } else {
+        return 0;
+    }
+}
+
+sub EXT_cache_set {
+    my ($target_domain,$target_user) = @_;
+    my $cachename = 'cache.'.$target_user.'.'.$target_domain;
+    &appenv($cachename => time);
+}
+
+# --------------------------------------------------------- Value of a Variable
 sub EXT {
-    my ($varname,$symbparm,$udom,$uname,)=@_;
+    my ($varname,$symbparm,$udom,$uname,$usection)=@_;
 
     unless ($varname) { return ''; }
     #get real user name/domain, courseid and symb
@@ -3174,7 +3220,7 @@ sub EXT {
     my $publicuser;
     if (!($uname && $udom)) {
       (my $cursymb,$courseid,$udom,$uname,$publicuser)=
-	  &Apache::lonxml::whichuser();
+	  &Apache::lonxml::whichuser($symbparm);
       if (!$symbparm) {	$symbparm=$cursymb; }
     } else {
 	$courseid=$ENV{'request.course.id'};
@@ -3252,7 +3298,7 @@ sub EXT {
     } elsif ($realm eq 'query') {
 # ---------------------------------------------- pull stuff out of query string
         &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},[$space]);
-	return $ENV{'form.'.$space}; 
+	return $ENV{'form.'.$spacequalifierrest}; 
    } elsif ($realm eq 'request') {
 # ------------------------------------------------------------- request.browser
         if ($space eq 'browser') {
@@ -3283,7 +3329,11 @@ sub EXT {
 		($ENV{'user.domain'} eq $udom)) {
 		$section=$ENV{'request.course.sec'};
 	    } else {
-		$section=&usection($udom,$uname,$courseid);
+                if (! defined($usection)) {
+                    $section=&usection($udom,$uname,$courseid);
+                } else {
+                    $section = $usection;
+                }
 	    }
 
 	    my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
@@ -3295,11 +3345,9 @@ sub EXT {
 	    my $courselevelm=$courseid.'.'.$mapparm;
 
 # ----------------------------------------------------------- first, check user
-	    #most student don't have any data set, check if there is some data
+	    #most student don\'t have any data set, check if there is some data
             #every thirty minutes
-	    if (!
-		(exists($ENV{'cache.studentresdata'})
-		    && (($ENV{'cache.studentresdata'}+1800) > time))) {
+	    if (! &EXT_cache_status($udom,$uname)) {
 		my %resourcedata=&get('resourcedata',
 				      [$courselevelr,$courselevelm,$courselevel],
 				      $udom,$uname);
@@ -3318,9 +3366,7 @@ sub EXT {
 				 $uname." at ".$udom.": ".
 				 $tmp."</font>");
 		    } elsif ($tmp=~/error:No such file/) {
-			$ENV{'cache.studentresdata'}=time;
-			&appenv(('cache.studentresdata'=>
-				 $ENV{'cache.studentresdata'}));
+                        &EXT_cache_set($udom,$uname);
 		    } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
 			return $tmp;
 		    }