--- loncom/lond	2005/06/27 22:32:37	1.289
+++ loncom/lond	2005/10/06 20:48:33	1.298
@@ -2,7 +2,7 @@
 # The LearningOnline Network
 # lond "LON Daemon" Server (port "LOND" 5663)
 #
-# $Id: lond,v 1.289 2005/06/27 22:32:37 albertel Exp $
+# $Id: lond,v 1.298 2005/10/06 20:48:33 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -48,6 +48,7 @@ use localauth;
 use localenroll;
 use localstudentphoto;
 use File::Copy;
+use File::Find;
 use LONCAPA::ConfigFileEdit;
 use LONCAPA::lonlocal;
 use LONCAPA::lonssl;
@@ -58,7 +59,7 @@ my $DEBUG = 0;		       # Non zero to ena
 my $status='';
 my $lastlog='';
 
-my $VERSION='$Revision: 1.289 $'; #' stupid emacs
+my $VERSION='$Revision: 1.298 $'; #' stupid emacs
 my $remoteVERSION;
 my $currenthostid="default";
 my $currentdomainid;
@@ -1363,18 +1364,18 @@ sub du_handler {
     #  etc.
     #
     if (-d $ududir) {
-	#  And as Shakespeare would say to make
-	#  assurance double sure, 
-	# use execute_command to ensure that the command is not executed in
-	# a shell that can screw us up.
-
-	my $duout = execute_command("du -ks $ududir");
-	$duout=~s/[^\d]//g; #preserve only the numbers
-	&Reply($client,"$duout\n","$cmd:$ududir");
+	my $total_size=0;
+	my $code=sub { 
+	    if ($_=~/\.\d+\./) { return;} 
+	    if ($_=~/\.meta$/) { return;}
+	    $total_size+=(stat($_))[7];
+	};
+	chdir($ududir);
+	find($code,$ududir);
+	$total_size=int($total_size/1024);
+	&Reply($client,"$total_size\n","$cmd:$ududir");
     } else {
-
 	&Failure($client, "bad_directory:$ududir\n","$cmd:$ududir"); 
-
     }
     return 1;
 }
@@ -1413,7 +1414,8 @@ sub ls_handler {
 	if(-d $ulsdir) {
 	    if (opendir(LSDIR,$ulsdir)) {
 		while ($ulsfn=readdir(LSDIR)) {
-		    undef $obs, $rights; 
+		    undef($obs);
+		    undef($rights); 
 		    my @ulsstats=stat($ulsdir.'/'.$ulsfn);
 		    #We do some obsolete checking here
 		    if(-e $ulsdir.'/'.$ulsfn.".meta") { 
@@ -1480,7 +1482,8 @@ sub ls2_handler {
         if(-d $ulsdir) {
             if (opendir(LSDIR,$ulsdir)) {
                 while ($ulsfn=readdir(LSDIR)) {
-                    undef $obs, $rights; 
+                    undef($obs);
+		    undef($rights); 
                     my @ulsstats=stat($ulsdir.'/'.$ulsfn);
                     #We do some obsolete checking here
                     if(-e $ulsdir.'/'.$ulsfn.".meta") { 
@@ -1970,6 +1973,13 @@ sub update_resource_handler {
 			alarm(0);
 		    }
 		    rename($transname,$fname);
+		    use Cache::Memcached;
+		    my $memcache=
+			new Cache::Memcached({'servers'=>['127.0.0.1:11211']});
+		    my $url=$fname;
+		    $url=~s-^/home/httpd/html--;
+		    my $id=&escape('meta:'.$url);
+		    $memcache->delete($id);
 		}
 	    }
 	    &Reply( $client, "ok\n", $userinput);
@@ -4402,16 +4412,23 @@ sub ReadHostTable {
     open (CONFIG,"$perlvar{'lonTabDir'}/hosts.tab") || die "Can't read host file";
     my $myloncapaname = $perlvar{'lonHostID'};
     Debug("My loncapa name is : $myloncapaname");
+    my %name_to_ip;
     while (my $configline=<CONFIG>) {
 	if ($configline !~ /^\s*\#/ && $configline !~ /^\s*$/ ) {
 	    my ($id,$domain,$role,$name)=split(/:/,$configline);
 	    $name=~s/\s//g;
-	    my $ip = gethostbyname($name);
-	    if (length($ip) ne 4) {
-		&logthis("Skipping host $id name $name no IP $ip found\n");
-		next;
+	    my $ip;
+	    if (!exists($name_to_ip{$name})) {
+		$ip = gethostbyname($name);
+		if (!$ip || length($ip) ne 4) {
+		    &logthis("Skipping host $id name $name no IP found\n");
+		    next;
+		}
+		$ip=inet_ntoa($ip);
+		$name_to_ip{$name} = $ip;
+	    } else {
+		$ip = $name_to_ip{$name};
 	    }
-	    $ip=inet_ntoa($ip);
 	    $hostid{$ip}=$id;         # LonCAPA name of host by IP.
 	    $hostdom{$id}=$domain;    # LonCAPA domain name of host. 
 	    $hostip{$id}=$ip;         # IP address of host.
@@ -4855,7 +4872,7 @@ sub make_new_child {
 #        my $tmpsnum=0;            # Now global
 #---------------------------------------------------- kerberos 5 initialization
         &Authen::Krb5::init_context();
-	if ($dist ne 'fedora4') {
+	unless (($dist eq 'fedora4') || ($dist eq 'suse9.3')) {
 	    &Authen::Krb5::init_ets();
 	}
 
@@ -5466,7 +5483,7 @@ sub thisversion {
 sub subscribe {
     my ($userinput,$clientip)=@_;
     my $result;
-    my ($cmd,$fname)=split(/:/,$userinput);
+    my ($cmd,$fname)=split(/:/,$userinput,2);
     my $ownership=&ishome($fname);
     if ($ownership eq 'owner') {
 # explitly asking for the current version?