--- loncom/lonnet/perl/lonnet.pm	2007/05/17 09:25:31	1.878
+++ loncom/lonnet/perl/lonnet.pm	2007/06/25 23:31:33	1.890.2.2
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # TCP networking package
 #
-# $Id: lonnet.pm,v 1.878 2007/05/17 09:25:31 foxr Exp $
+# $Id: lonnet.pm,v 1.890.2.2 2007/06/25 23:31:33 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -149,7 +149,7 @@ sub create_connection {
 				     Type    => SOCK_STREAM,
 				     Timeout => 10);
     return 0 if (!$client);
-    print $client (join(':',$hostname,$lonid,&machine_ids($lonid))."\n");
+    print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
     my $result = <$client>;
     chomp($result);
     return 1 if ($result eq 'done');
@@ -770,7 +770,7 @@ sub get_dom {
         }
         return %returnhash;
     } else {
-        &logthis("get_dom failed - no homeserver and/or domain");
+        &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
     }
 }
 
@@ -1739,13 +1739,16 @@ sub extract_embedded_items {
     while (my $t=$p->get_token()) {
 	if ($t->[0] eq 'S') {
 	    my ($tagname, $attr) = ($t->[1],$t->[2]);
-	    push (@state, $tagname);
+	    push(@state, $tagname);
             if (lc($tagname) eq 'allow') {
                 &add_filetype($allfiles,$attr->{'src'},'src');
             }
 	    if (lc($tagname) eq 'img') {
 		&add_filetype($allfiles,$attr->{'src'},'src');
 	    }
+	    if (lc($tagname) eq 'a') {
+		&add_filetype($allfiles,$attr->{'href'},'href');
+	    }
             if (lc($tagname) eq 'script') {
                 if ($attr->{'archive'} =~ /\.jar$/i) {
                     &add_filetype($allfiles,$attr->{'archive'},'archive');
@@ -3133,7 +3136,7 @@ sub set_userprivs {
     if (keys(%{$allgroups}) > 0) {
         foreach my $role (keys %{$allroles}) {
             my ($trole,$area,$sec,$extendedarea);
-            if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)-) {
+            if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
                 $trole = $1;
                 $area = $2;
                 $sec = $3;
@@ -5977,7 +5980,21 @@ sub get_userresdata {
     }
     return $tmp;
 }
-
+#----------------------------------------------- resdata - return resource data
+#  Purpose:
+#    Return resource data for either users or for a course.
+#  Parameters:
+#     $name      - Course/user name.
+#     $domain    - Name of the domain the user/course is registered on.
+#     $type      - Type of thing $name is (must be 'course' or 'user'
+#     @which     - Array of names of resources desired.
+#  Returns:
+#     The value of the first reasource in @which that is found in the
+#     resource hash.
+#  Exceptional Conditions:
+#     If the $type passed in is not valid (not the string 'course' or 
+#     'user', an undefined  reference is returned.
+#     If none of the resources are found, an undef is returned
 sub resdata {
     my ($name,$domain,$type,@which)=@_;
     my $result;
@@ -6324,7 +6341,7 @@ sub packages_tab_default {
 	    $do_default=1;
 	} elsif ($pack_type eq 'extension') {
 	    push(@extension,[$package,$pack_type,$pack_part]);
-	} elsif ($pack_part eq $part) {
+	} elsif ($pack_part eq $part || $pack_type eq 'part') {
 	    # only look at packages defaults for packages that this id is
 	    push(@specifics,[$package,$pack_type,$pack_part]);
 	}
@@ -6541,13 +6558,18 @@ sub metadata {
 	    }
 	}
 	my ($extension) = ($uri =~ /\.(\w+)$/);
+	$extension = lc($extension);
+	if ($extension eq 'htm') { $extension='html'; }
+
 	foreach my $key (keys(%packagetab)) {
 	    #no specific packages #how's our extension
 	    if ($key!~/^extension_\Q$extension\E&/) { next; }
 	    &metadata_create_package_def($uri,$key,'extension_'.$extension,
 					 \%metathesekeys);
 	}
-	if (!exists($metaentry{':packages'})) {
+
+	if (!exists($metaentry{':packages'})
+	    || $packagetab{"import_defaults&extension_$extension"}) {
 	    foreach my $key (keys(%packagetab)) {
 		#no specific packages well let's get default then
 		if ($key!~/^default&/) { next; }
@@ -7496,6 +7518,7 @@ sub filelocation {
 	$file=~s-^/adm/wrapper/-/-;
 	$file=~s-^/adm/coursedocs/showdoc/-/-;
     }
+
     if ($file=~m:^/~:) { # is a contruction space reference
         $location = $file;
         $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
@@ -7516,6 +7539,8 @@ sub filelocation {
   	  $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
   	      $udom.'/'.$uname.'/'.$filename;
         }
+    } elsif ($file =~ m-^/adm/-) {
+	$location = $perlvar{'lonDocRoot'}.'/'.$file;
     } else {
         $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
         $file=~s:^/res/:/:;
@@ -7575,14 +7600,11 @@ sub machine_ids {
     my ($hostname) = @_;
     $hostname ||= &hostname($perlvar{'lonHostID'});
     my @ids;
-    my %hostname = &all_hostnames();
-    while( my($id, $name) = each(%hostname)) {
-#	&logthis("-$id-$name-$hostname-");
-	if ($hostname eq $name) {
-	    push(@ids,$id);
-	}
+    my %name_to_host = &all_names();
+    if (ref($name_to_host{$hostname}) eq 'ARRAY') {
+	return @{ $name_to_host{$hostname} };
     }
-    return @ids;
+    return;
 }
 
 sub additional_machine_domains {
@@ -7626,7 +7648,8 @@ sub declutter {
 
 sub clutter {
     my $thisfn='/'.&declutter(shift);
-    unless ($thisfn=~/^\/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)\//) { 
+    if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
+	|| $thisfn =~ m{^/adm/(includes|pages)} ) { 
        $thisfn='/res'.$thisfn; 
     }
     if ($thisfn !~m|/adm|) {
@@ -7809,6 +7832,7 @@ sub get_dns {
     my %hostdom;
     my %libserv;
     my $loaded;
+    my %name_to_host;
 
     sub parse_hosts_tab {
 	my ($file) = @_;
@@ -7820,6 +7844,7 @@ sub get_dns {
 	    $name=~s/\s//g;
 	    if ($id && $domain && $role && $name) {
 		$hostname{$id}=$name;
+		push(@{$name_to_host{$name}}, $id);
 		$hostdom{$id}=$domain;
 		if ($role eq 'library') { $libserv{$id}=$name; }
 	    }
@@ -7829,6 +7854,7 @@ sub get_dns {
     sub reset_hosts_info {
 	&reset_domain_info();
 	&reset_hosts_ip_info();
+	undef(%name_to_host);
 	undef(%hostname);
 	undef(%hostdom);
 	undef(%libserv);
@@ -7858,6 +7884,12 @@ sub get_dns {
 	return %hostname;
     }
 
+    sub all_names {
+	&load_hosts_tab() if (!$loaded);
+
+	return %name_to_host;
+    }
+
     sub is_library {
 	&load_hosts_tab() if (!$loaded);
 
@@ -7914,24 +7946,6 @@ sub get_dns {
     my %name_to_ip;
     my %lonid_to_ip;
 
-    my %valid_ip;
-    sub valid_ip {
-	my ($ip) = @_;
-	if (exists($iphost{$ip}) || exists($valid_ip{$ip})) {
-	    return 1;	
-	}
-	my $name = gethostbyip($ip);
-	my $lonid = &hostname($name);
-	if (defined($lonid)) {
-	    $valid_ip{$ip} = $lonid;
-	    return 1;
-	}
-	my %iphosts = &get_iphost();
-	if (ref($iphost{$ip})) {
-	    return 1;	
-	}
-    }
-
     sub get_hosts_from_ip {
 	my ($ip) = @_;
 	my %iphosts = &get_iphost();
@@ -7963,6 +7977,7 @@ sub get_dns {
     
     sub get_iphost {
 	my ($ignore_cache) = @_;
+
 	if (!$ignore_cache) {
 	    if (%iphost) {
 		return %iphost;
@@ -7976,27 +7991,43 @@ sub get_dns {
 		return %iphost;
 	    }
 	}
-	my %hostname = &all_hostnames();
-	foreach my $id (keys(%hostname)) {
-	    my $name=&hostname($id);
+
+	# get yesterday's info for fallback
+	my %old_name_to_ip;
+	my ($ip_info,$cached)=
+	    &Apache::lonnet::is_cached_new('iphost','iphost');
+	if ($cached) {
+	    %old_name_to_ip = %{$ip_info->[1]};
+	}
+
+	my %name_to_host = &all_names();
+	foreach my $name (keys(%name_to_host)) {
 	    my $ip;
 	    if (!exists($name_to_ip{$name})) {
 		$ip = gethostbyname($name);
 		if (!$ip || length($ip) ne 4) {
-		    &logthis("Skipping host $id name $name no IP found");
-		    next;
+		    if (defined($old_name_to_ip{$name})) {
+			$ip = $old_name_to_ip{$name};
+			&logthis("Can't find $name defaulting to old $ip");
+		    } else {
+			&logthis("Name $name no IP found");
+			next;
+		    }
+		} else {
+		    $ip=inet_ntoa($ip);
 		}
-		$ip=inet_ntoa($ip);
 		$name_to_ip{$name} = $ip;
 	    } else {
 		$ip = $name_to_ip{$name};
 	    }
-	    $lonid_to_ip{$id} = $ip;
-	    push(@{$iphost{$ip}},$id);
+	    foreach my $id (@{ $name_to_host{$name} }) {
+		$lonid_to_ip{$id} = $ip;
+	    }
+	    push(@{$iphost{$ip}},@{$name_to_host{$name}});
 	}
 	&Apache::lonnet::do_cache_new('iphost','iphost',
 				      [\%iphost,\%name_to_ip,\%lonid_to_ip],
-				      24*60*60);
+				      48*60*60);
 
 	return %iphost;
     }