--- loncom/lonnet/perl/lonnet.pm	2002/12/05 23:13:54	1.307
+++ loncom/lonnet/perl/lonnet.pm	2003/01/09 22:45:51	1.314
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # TCP networking package
 #
-# $Id: lonnet.pm,v 1.307 2002/12/05 23:13:54 albertel Exp $
+# $Id: lonnet.pm,v 1.314 2003/01/09 22:45:51 www Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -80,7 +80,8 @@ use vars
 qw(%perlvar %hostname %homecache %badServerCache %hostip %iphost %spareid %hostdom 
    %libserv %pr %prp %metacache %packagetab %titlecache 
    %courselogs %accesshash $processmarker $dumpcount 
-   %coursedombuf %coursehombuf %courseresdatacache %domaindescription);
+   %coursedombuf %coursehombuf %courseresdatacache 
+   %domaindescription);
 use IO::Socket;
 use GDBM_File;
 use Apache::Constants qw(:common :http);
@@ -142,9 +143,9 @@ sub reply {
     unless (defined($hostname{$server})) { return 'no_such_host'; }
     my $answer=subreply($cmd,$server);
     if ($answer eq 'con_lost') {
-       #sleep 5; 
-       #$answer=subreply($cmd,$server);
-       #if ($answer eq 'con_lost') {
+        #sleep 5; 
+        #$answer=subreply($cmd,$server);
+        #if ($answer eq 'con_lost') {
 	#   &logthis("Second attempt con_lost on $server");
         #   my $peerfile="$perlvar{'lonSockDir'}/$server";
         #   my $client=IO::Socket::UNIX->new(Peer    =>"$peerfile",
@@ -202,7 +203,6 @@ sub critical {
                " Critical message to unknown server ($server)</font>");
         return 'no_such_host';
     }
-    sleep 2;
     my $answer=reply($cmd,$server);
     if ($answer eq 'con_lost') {
         my $pingreply=reply('ping',$server);
@@ -729,6 +729,7 @@ sub currentversion {
 
 sub subscribe {
     my $fname=shift;
+    if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
     my $author=$fname;
     $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
     my ($udom,$uname)=split(/\//,$author);
@@ -1863,6 +1864,12 @@ sub allowed {
        $thisallowed.=$1;
     }
 
+# URI is an uploaded document for this course
+
+    if (($priv eq 'bre') && 
+        ($uri=~/^uploaded\/$ENV{'course.'.$ENV{'request.course.id'}.'.domain'}\/$ENV{'course.'.$ENV{'request.course.id'}.'.num'}/)) {
+        return 'F';
+    }
 # Full access at system, domain or course-wide level? Exit.
 
     if ($thisallowed=~/F/) {
@@ -2349,10 +2356,15 @@ sub modifyuser {
        }
     }
 # -------------------------------------------------------------- Add names, etc
-    my %names=&get('environment',
+    my @tmp=&get('environment',
 		   ['firstname','middlename','lastname','generation'],
 		   $udom,$uname);
-    if ($names{'firstname'} =~ m/^error:.*/) { %names=(); }
+    my %names;
+    if ($tmp[0] =~ m/^error:.*/) { 
+        %names=(); 
+    } else {
+        %names = @tmp;
+    }
     if ($first)  { $names{'firstname'}  = $first; }
     if ($middle) { $names{'middlename'} = $middle; }
     if ($last)   { $names{'lastname'}   = $last; }
@@ -2848,25 +2860,35 @@ sub EXT {
 	    my $courselevelm=$courseid.'.'.$mapparm;
 
 # ----------------------------------------------------------- first, check user
-	    my %resourcedata=&get('resourcedata',
-				  [$courselevelr,$courselevelm,$courselevel],
-				 $udom,$uname);
-	    my ($tmp)=keys(%resourcedata);
-	    if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
-		if ($resourcedata{$courselevelr}) {
-		    return $resourcedata{$courselevelr}; }
-		if ($resourcedata{$courselevelm}) {
-		    return $resourcedata{$courselevelm}; }
-		if ($resourcedata{$courselevel}) {
-		    return $resourcedata{$courselevel}; }
-	    } else {
-		if ($tmp!~/No such file/) {
-		    &logthis("<font color=blue>WARNING:".
-			     " Trying to get resource data for ".
-			     $uname." at ".$udom.": ".
-			     $tmp."</font>");
-		} elsif ($tmp =~ /^(con_lost|no_such_host)/) {
-		  return $tmp;
+	    #most student don't have any data set, check if there is some data
+            #every thirty minutes
+	    if (!
+		(exists($ENV{'cache.studentresdata'})
+		    && (($ENV{'cache.studentresdata'}+1800) > time))) {
+		my %resourcedata=&get('resourcedata',
+				      [$courselevelr,$courselevelm,$courselevel],
+				      $udom,$uname);
+		my ($tmp)=keys(%resourcedata);
+		if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
+		    if ($resourcedata{$courselevelr}) {
+			return $resourcedata{$courselevelr}; }
+		    if ($resourcedata{$courselevelm}) {
+			return $resourcedata{$courselevelm}; }
+		    if ($resourcedata{$courselevel}) {
+			return $resourcedata{$courselevel}; }
+		} else {
+		    if ($tmp!~/No such file/) {
+			&logthis("<font color=blue>WARNING:".
+				 " Trying to get resource data for ".
+				 $uname." at ".$udom.": ".
+				 $tmp."</font>");
+		    } elsif ($tmp=~/error:No such file/) {
+			$ENV{'cache.studentresdata'}=time;
+			&appenv(('cache.studentresdata'=>
+				 $ENV{'cache.studentresdata'}));
+		    } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
+			return $tmp;
+		    }
 		}
 	    }