--- loncom/interface/domainprefs.pm	2010/07/17 20:02:07	1.137
+++ loncom/interface/domainprefs.pm	2010/07/20 02:42:40	1.138
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Handler to set domain-wide configuration settings
 #
-# $Id: domainprefs.pm,v 1.137 2010/07/17 20:02:07 raeburn Exp $
+# $Id: domainprefs.pm,v 1.138 2010/07/20 02:42:40 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -2270,10 +2270,12 @@ sub print_usersessions {
     } else {
         $prefix = 'remote';
         @types = ('version','excludedomain','includedomain');
-    } 
+    }
     my (%current,%checkedon,%checkedoff);
     my @lcversions = &Apache::lonnet::all_loncaparevs();
-    my @alldoms = sort(&Apache::lonnet::all_domains());
+    my (%by_ip,%by_location,@intdoms);
+    &build_location_hashes(\@intdoms,\%by_ip,\%by_location);
+    my @locations = sort(keys(%by_location));
     foreach my $type (@types) {
         $checkedon{$type} = '';
         $checkedoff{$type} = ' checked="checked"';
@@ -2322,12 +2324,21 @@ sub print_usersessions {
                          "\n".
                          '</div><div><table>';
             my $rem;
-            for (my $i=0; $i<@alldoms; $i++) {
-                next if ($alldoms[$i] eq $dom);
-                my $checkedtype;
-                if (ref($current{$type}) eq 'ARRAY') {
-                    if (grep(/^\Q$alldoms[$i]\E$/,@{$current{$type}})) {
-                        $checkedtype = ' checked="checked"';
+            for (my $i=0; $i<@locations; $i++) {
+                my ($showloc,$value,$checkedtype);
+                if (ref($by_location{$locations[$i]}) eq 'ARRAY') {
+                    my $ip = $by_location{$locations[$i]}->[0];
+                    if (ref($by_ip{$ip}) eq 'ARRAY') {
+                        $value = join(':',@{$by_ip{$ip}});
+                        $showloc = join(', ',@{$by_ip{$ip}});
+                        if (ref($current{$type}) eq 'ARRAY') {
+                            foreach my $loc (@{$by_ip{$ip}}) {  
+                                if (grep(/^\Q$loc\E$/,@{$current{$type}})) {
+                                    $checkedtype = ' checked="checked"';
+                                    last;
+                                }
+                            }
+                        }
                     }
                 }
                 $rem = $i%($numinrow);
@@ -2340,10 +2351,10 @@ sub print_usersessions {
                 $datatable .= '<td class="LC_left_item">'.
                               '<span class="LC_nobreak"><label>'.
                               '<input type="checkbox" name="'.$prefix.'_'.$type.
-                              '" value="'.$alldoms[$i].'"'.$checkedtype.' />'.$alldoms[$i].
+                              '" value="'.$value.'"'.$checkedtype.' />'.$showloc.
                               '</label></span></td>';
             }
-            $rem = @alldoms%($numinrow);
+            $rem = @locations%($numinrow);
             my $colsleft = $numinrow - $rem;
             if ($colsleft > 1 ) {
                 $datatable .= '<td colspan="'.$colsleft.'" class="LC_left_item">'.
@@ -2360,6 +2371,54 @@ sub print_usersessions {
     return $datatable;
 }
 
+sub build_location_hashes {
+    my ($intdoms,$by_ip,$by_location) = @_;
+    return unless((ref($intdoms) eq 'ARRAY') && (ref($by_ip) eq 'HASH') &&
+                  (ref($by_location) eq 'HASH')); 
+    my %iphost = &Apache::lonnet::get_iphost();
+    my $primary_id = &Apache::lonnet::domain($env{'request.role.domain'},'primary');
+    my $primary_ip = &Apache::lonnet::get_host_ip($primary_id);
+    if (ref($iphost{$primary_ip}) eq 'ARRAY') {
+        foreach my $id (@{$iphost{$primary_ip}}) {
+            my $intdom = &Apache::lonnet::internet_dom($id);
+            unless(grep(/^\Q$intdom\E$/,@{$intdoms})) {
+                push(@{$intdoms},$intdom);
+            }
+        }
+    }
+    foreach my $ip (keys(%iphost)) {
+        if (ref($iphost{$ip}) eq 'ARRAY') {
+            foreach my $id (@{$iphost{$ip}}) {
+                my $location = &Apache::lonnet::internet_dom($id);
+                if ($location) {
+                    next if (grep(/^\Q$location\E$/,@{$intdoms}));
+                    if (ref($by_ip->{$ip}) eq 'ARRAY') {
+                        unless(grep(/^\Q$location\E$/,@{$by_ip->{$ip}})) {
+                            push(@{$by_ip->{$ip}},$location);
+                        }
+                    } else {
+                        $by_ip->{$ip} = [$location];
+                    }
+                }
+            }
+        }
+    }
+    foreach my $ip (sort(keys(%{$by_ip}))) {
+        if (ref($by_ip->{$ip}) eq 'ARRAY') {
+            @{$by_ip->{$ip}} = sort(@{$by_ip->{$ip}});
+            my $first = $by_ip->{$ip}->[0];
+            if (ref($by_location->{$first}) eq 'ARRAY') {
+                unless (grep(/^\Q$ip\E$/,@{$by_location->{$first}})) {
+                    push(@{$by_location->{$first}},$ip);
+                }
+            } else {
+                $by_location->{$first} = [$ip];
+            }
+        }
+    }
+    return;
+}
+
 sub contact_titles {
     my %titles = &Apache::lonlocal::texthash (
                    'supportemail' => 'Support E-mail address',
@@ -6642,12 +6701,16 @@ sub modify_usersessions {
     my @types = ('version','excludedomain','includedomain');
     my @prefixes = ('remote','hosted');
     my @lcversions = &Apache::lonnet::all_loncaparevs();
+    my (%by_ip,%by_location,@intdoms);
+    &build_location_hashes(\@intdoms,\%by_ip,\%by_location);
+    my @locations = sort(keys(%by_location));
     my (%defaultshash,%changes);
     foreach my $prefix (@prefixes) {
         $defaultshash{'usersessions'}{$prefix} = {};
     }
     my %domdefaults = &Apache::lonnet::get_domain_defaults($dom);
     my $resulttext;
+    my %iphost = &Apache::lonnet::get_iphost();
     foreach my $prefix (@prefixes) {
         foreach my $type (@types) {
             my $inuse = $env{'form.'.$prefix.'_'.$type.'_inuse'};
@@ -6694,8 +6757,17 @@ sub modify_usersessions {
                 my @vals = &Apache::loncommon::get_env_multiple('form.'.$prefix.'_'.$type);
                 my @okvals;
                 foreach my $val (@vals) {
-                    if (&Apache::lonnet::domain($val) ne '') {
-                        push(@okvals,$val);
+                    if ($val =~ /:/) {
+                        my @items = split(/:/,$val);
+                        foreach my $item (@items) {
+                            if (ref($by_location{$item}) eq 'ARRAY') {
+                                push(@okvals,$item);
+                            }
+                        }
+                    } else {
+                        if (ref($by_location{$val}) eq 'ARRAY') {
+                            push(@okvals,$val);
+                        }
                     }
                 }
                 @okvals = sort(@okvals);
@@ -6942,8 +7014,8 @@ sub usersession_titles {
 
                remote => 'Hosting of sessions for users in this domain on servers in other domains',
                version => 'LON-CAPA version requirement',
-               excludedomain => 'Specific domains excluded',
-               includedomain => 'Specific domains included',
+               excludedomain => 'Allow all, but exclude specific domains',
+               includedomain => 'Deny all, but include specific domains',
            );
 }