--- loncom/interface/domainprefs.pm	2010/03/21 20:33:47	1.132
+++ loncom/interface/domainprefs.pm	2011/03/10 23:39:22	1.138.2.8
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Handler to set domain-wide configuration settings
 #
-# $Id: domainprefs.pm,v 1.132 2010/03/21 20:33:47 raeburn Exp $
+# $Id: domainprefs.pm,v 1.138.2.8 2011/03/10 23:39:22 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -140,7 +140,7 @@ autolimit
 
 =over
  
-- course requests will be processed autoatically up to a limit of
+- course requests will be processed automatically up to a limit of
 N requests for the course type for the particular requestor.
 If N is undefined, there is no limit to the number of course requests
 which a course owner may submit and have processed automatically. 
@@ -202,13 +202,13 @@ sub handler {
                 'quotas','autoenroll','autoupdate','autocreate',
                 'directorysrch','usercreation','usermodification',
                 'contacts','defaults','scantron','coursecategories',
-                'serverstatuses','requestcourses','helpsettings',
-                'coursedefaults'],$dom);
+                'serverstatuses','requestcourses','coursedefaults',
+                'usersessions'],$dom);
     my @prefs_order = ('rolecolors','login','defaults','quotas','autoenroll',
                        'autoupdate','autocreate','directorysrch','contacts',
                        'usercreation','usermodification','scantron',
-                       'requestcourses','coursecategories','serverstatuses','helpsettings',
-                       'coursedefaults');
+                       'requestcourses','coursecategories','serverstatuses',
+                       'coursedefaults','usersessions');
     my %prefs = (
         'rolecolors' =>
                    { text => 'Default color schemes',
@@ -230,13 +230,13 @@ sub handler {
                     },
 
         'defaults' => 
-                    { text => 'Default authentication/language/timezone',
+                    { text => 'Default authentication/language/timezone/portal',
                       help => 'Domain_Configuration_LangTZAuth',
                       header => [{col1 => 'Setting',
                                   col2 => 'Value'}],
                     },
         'quotas' => 
-                    { text => 'User blogs, personal information pages and portfolios',
+                    { text => 'User blogs, personal information pages, portfolios',
                       help => 'Domain_Configuration_Quotas',
                       header => [{col1 => 'User affiliation',
                                   col2 => 'Available tools',
@@ -337,10 +337,10 @@ sub handler {
                              {col1 => 'Unauthenticated Help Settings',
                               col2 => ''}],
                  },
-        'coursedefaults' => 
+        'coursedefaults' =>
                  {text => 'Course/Community defaults',
                   help => 'Domain_Configuration_Course_Defaults',
-                  header => [{col1 => 'Setting',
+                  header => [{col1 => 'Defaults which can be overridden for each course by a DC',
                               col2 => 'Value',}],
                  },
         'privacy' => 
@@ -349,6 +349,14 @@ sub handler {
                   header => [{col1 => 'Setting',
                               col2 => 'Value',}],
                  },
+         'usersessions' =>
+                 {text  => 'User session hosting',
+                  help  => 'Domain_Configuration_User_Sessions',
+                  header => [{col1 => 'Hosting of users from other domains',
+                              col2 => 'Rules'},
+                             {col1 => "Hosting domain's own users elsewhere",
+                              col2 => 'Rules'}],
+                 },
     );
     my %servers = &dom_servers($dom);
     if (keys(%servers) > 1) {
@@ -364,7 +372,7 @@ sub handler {
     my @actions = &Apache::loncommon::get_env_multiple('form.actions');
     &Apache::lonhtmlcommon::add_breadcrumb
     ({href=>"javascript:changePage(document.$phase,'pickactions')",
-      text=>"Pick functionality"});
+      text=>"Settings to display/modify"});
     my $confname = $dom.'-domainconfig';
     if ($phase eq 'process') {
         &Apache::lonconfigsettings::make_changes($r,$dom,$phase,$context,\@prefs_order,\%prefs,\%domconfig,$confname,\@roles);
@@ -447,10 +455,10 @@ sub process_changes {
         $output = &modify_serverstatuses($dom,%domconfig);
     } elsif ($action eq 'requestcourses') {
         $output = &modify_quotas($dom,$action,%domconfig);
-    } elsif ($action eq 'helpsettings') {
-        $output = &modify_helpsettings($r,$dom,$confname,%domconfig);
     } elsif ($action eq 'coursedefaults') {
         $output = &modify_coursedefaults($dom,%domconfig);
+    } elsif ($action eq 'usersessions') {
+        $output = &modify_usersessions($dom,%domconfig);
     }
     return $output;
 }
@@ -503,6 +511,8 @@ sub print_config_box {
             $output .= &print_quotas($dom,$settings,\$rowtotal,$action);
         } elsif ($action eq 'helpsettings') {
             $output .= &print_helpsettings('top',$dom,$confname,$settings,\$rowtotal);
+        } elsif ($action eq 'usersessions') {
+            $output .= &print_usersessions('top',$dom,$settings,\$rowtotal);
         } elsif ($action eq 'rolecolors') {
             $output .= &print_rolecolors($phase,'student',$dom,$confname,$settings,\$rowtotal);
         }
@@ -566,6 +576,8 @@ sub print_config_box {
             $output .= &print_courserequestmail($dom,$settings,\$rowtotal);
         } elsif ($action eq 'helpsettings') {
             $output .= &print_helpsettings('bottom',$dom,$confname,$settings,\$rowtotal);
+        } elsif ($action eq 'usersessions') {
+            $output .= &print_usersessions('bottom',$dom,$settings,\$rowtotal);
         } elsif ($action eq 'rolecolors') {
             $output .= &print_rolecolors($phase,'coordinator',$dom,$confname,$settings,\$rowtotal).'
            </table>
@@ -652,10 +664,8 @@ sub print_config_box {
             $output .= &print_scantronformat($r,$dom,$confname,$settings,\$rowtotal);
         } elsif ($action eq 'serverstatuses') {
             $output .= &print_serverstatuses($dom,$settings,\$rowtotal);
-        } elsif ($action eq 'helpsettings') {
-            $output .= &print_helpsettings('top',$dom,$confname,$settings,\$rowtotal);
-    	} elsif ($action eq 'coursedefaults') {
-            $output .= &print_coursedefaults($dom,$settings,\$rowtotal);
+        } elsif ($action eq 'coursedefaults') {
+            $output .= &print_coursedefaults('bottom',$dom,$settings,\$rowtotal);
         }
     }
     $output .= '
@@ -756,7 +766,6 @@ sub print_login {
             $checkedon{$item} = ' ';
         }
     }
-    my $loginheader = 'image';
     my @images = ('img','logo','domlogo','login');
     my @logintext = ('textcol','bgcol');
     my @bgs = ('pgbg','mainbg','sidebg');
@@ -805,9 +814,6 @@ sub print_login {
                 $is_custom{$item} = 1;
             }
         }
-        if ($settings->{'loginheader'} ne '') {
-            $loginheader = $settings->{'loginheader'};
-        }
         if ($settings->{'font'} ne '') {
             $designs{'font'} = $settings->{'font'};
             $is_custom{'font'} = 1;
@@ -853,7 +859,6 @@ sub print_login {
                                                   domlogo => 'Domain Logo',
                                                   login => 'Login box');
     my $itemcount = 1;
-    my ($css_class,$datatable);
     foreach my $item (@toggles) {
         $css_class = $itemcount%2?' class="LC_odd_row"':'';
         $datatable .=  
@@ -866,7 +871,7 @@ sub print_login {
             '</tr>';
         $itemcount ++;
     }
-    $datatable .= &display_color_options($dom,$confname,$phase,'login',$itemcount,\%choices,\%is_custom,\%defaults,\%designs,\@images,\@bgs,\@links,\%alt_text,$rowtotal,\@logintext,$loginheader);
+    $datatable .= &display_color_options($dom,$confname,$phase,'login',$itemcount,\%choices,\%is_custom,\%defaults,\%designs,\@images,\@bgs,\@links,\%alt_text,$rowtotal,\@logintext);
     $datatable .= '</tr></table></td></tr>';
     return $datatable;
 }
@@ -986,9 +991,9 @@ sub print_rolecolors {
 
 sub display_color_options {
     my ($dom,$confname,$phase,$role,$itemcount,$choices,$is_custom,$defaults,$designs,
-        $images,$bgs,$links,$alt_text,$rowtotal,$logintext,$loginheader) = @_;
+        $images,$bgs,$links,$alt_text,$rowtotal,$logintext) = @_;
     my $css_class = $itemcount%2?' class="LC_odd_row"':'';
-    my $datatable = '<tr>'.
+    my $datatable = '<tr'.$css_class.'>'.
         '<td>'.$choices->{'font'}.'</td>';
     if (!$is_custom->{'font'}) {
         $datatable .=  '<td>'.&mt('Default in use:').'&nbsp;<span id="css_default_'.$role.'_font" style="color: '.$defaults->{'font'}.';">'.$defaults->{'font'}.'</span></td>';
@@ -1028,8 +1033,7 @@ sub display_color_options {
         if ($role eq 'login') {
             if ($img eq 'login') {
                 $login_hdr_pick =
-                    &login_header_options($img,$role,$defaults,$is_custom,$choices,
-                                          $loginheader);
+                    &login_header_options($img,$role,$defaults,$is_custom,$choices);
                 $logincolors =
                     &login_text_colors($img,$role,$logintext,$phase,$choices,
                                             $designs);
@@ -1106,8 +1110,8 @@ sub display_color_options {
                 }
                 $datatable .= '<td>';
                 if ($img eq 'login') {
-                    $datatable .= $login_hdr_pick;    
-                }
+                    $datatable .= $login_hdr_pick;
+                } 
                 $datatable .= &image_changes($is_custom->{$img},$alt_text->{$img},$img_import,
                                              $showfile,$fullsize,$role,$img,$imgfile,$logincolors);
             } else {
@@ -1121,7 +1125,9 @@ sub display_color_options {
         if ($switchserver) {
             $datatable .= &mt('Upload to library server: [_1]',$switchserver);
         } else {
-            $datatable .='&nbsp;<input type="file" name="'.$role.'_'.$img.'" />';
+            if ($img ne 'login') { # suppress file selection for Log-in header
+                $datatable .='&nbsp;<input type="file" name="'.$role.'_'.$img.'" />';
+            }
         }
         $datatable .= '</td></tr>';
     }
@@ -1210,20 +1216,10 @@ sub logo_display_options {
 }
 
 sub login_header_options  {
-    my ($img,$role,$defaults,$is_custom,$choices,$loginheader) = @_;
-    my $image_checked = ' checked="checked" ';
-    my $text_checked = ' ';
-    if ($loginheader eq 'text') {
-        $image_checked = ' ';
-        $text_checked = ' checked="checked" ';
-    }
-    my $output = '<span class="LC_nobreak"><label><input type="radio" name="'.
-              'loginheader" value="image" '.$image_checked.'/>'.
-              &mt('use image').'</label>&nbsp;&nbsp;&nbsp;'.
-              '<label><input type="radio" name="loginheader" value="text"'.
-              $text_checked.'/>'.&mt('use text').'</label><br />'."\n";
+    my ($img,$role,$defaults,$is_custom,$choices) = @_;
+    my $output = '';
     if ((!$is_custom->{'textcol'}) || (!$is_custom->{'bgcol'})) {
-        $output .= &mt('Text default(s)').':<br />';
+        $output .= &mt('Text default(s):').'<br />';
         if (!$is_custom->{'textcol'}) {
             $output .= $choices->{'textcol'}.':&nbsp;'.$defaults->{'logintext'}{'textcol'}.
                        '&nbsp;&nbsp;&nbsp;';
@@ -1259,25 +1255,31 @@ sub login_text_colors {
 sub image_changes {
     my ($is_custom,$alt_text,$img_import,$showfile,$fullsize,$role,$img,$imgfile,$logincolors) = @_;
     my $output;
-    if (!$is_custom) {
+    if ($img eq 'login') {
+            # suppress image for Log-in header
+    } elsif (!$is_custom) {
         if ($img ne 'domlogo') {
             $output .= &mt('Default image:').'<br />';
         } else {
             $output .= &mt('Default in use:').'<br />';
         }
     }
-    if ($img_import) {
-        $output .= '<input type="hidden" name="'.$role.'_import_'.$img.'" value="'.$imgfile.'" />';
-    }
-    $output .= '<a href="'.$fullsize.'" target="_blank"><img src="'.
-               $showfile.'" alt="'.$alt_text.'" border="0" /></a></td>';
-    if ($is_custom) {
-        $output .= '<td>'.$logincolors.'<span class="LC_nobreak"><label>'.
-                   '<input type="checkbox" name="'.
-                   $role.'_del_'.$img.'" value="1" />'.&mt('Delete?').
-                   '</label>&nbsp;'.&mt('Replace:').'</span><br />';
+    if ($img eq 'login') { # suppress image for Log-in header
+        $output .= '<td>'.$logincolors;
     } else {
-        $output .= '<td valign="bottom">'.$logincolors.&mt('Upload:').'<br />';
+        if ($img_import) {
+            $output .= '<input type="hidden" name="'.$role.'_import_'.$img.'" value="'.$imgfile.'" />';
+        }
+        $output .= '<a href="'.$fullsize.'" target="_blank"><img src="'.
+                   $showfile.'" alt="'.$alt_text.'" border="0" /></a></td>';
+        if ($is_custom) {
+            $output .= '<td>'.$logincolors.'<span class="LC_nobreak"><label>'.
+                       '<input type="checkbox" name="'.
+                       $role.'_del_'.$img.'" value="1" />'.&mt('Delete?').
+                       '</label>&nbsp;'.&mt('Replace:').'</span><br />';
+        } else {
+            $output .= '<td valign="bottom">'.$logincolors.&mt('Upload:').'<br />';
+        }
     }
     return $output;
 }
@@ -1876,24 +1878,23 @@ sub print_autocreate {
                   '<input type="radio" name="autocreate_xml"'.
                   $createon{'xml'}.' value="1" />'.&mt('Yes').'</label>&nbsp;'.
                   '<label><input type="radio" name="autocreate_xml"'.
-                  $createoff{'xml'}.' value="0" />'.&mt('No').'</label></span>';
+                  $createoff{'xml'}.' value="0" />'.&mt('No').'</label></span>'.
+                  '</td></tr><tr>'.
+                  '<td>'.&mt('Create pending requests for official courses (if validated)').'</td>'.
+                  '<td class="LC_right_item"><span class="LC_nobreak"><label>'.
+                  '<input type="radio" name="autocreate_req"'.
+                  $createon{'req'}.' value="1" />'.&mt('Yes').'</label>&nbsp;'.
+                  '<label><input type="radio" name="autocreate_req"'.
+                  $createoff{'req'}.' value="0" />'.&mt('No').'</label></span>';
     my ($numdc,$dctable) = &active_dc_picker($dom,$curr_dc);
     if ($numdc > 1) {
-        $datatable .= '</td><tr><td>'.
-                      &mt('XML files processed as: (choose Dom. Coord.)'). 
-                      '</td><td class="LC_left_item">'.$dctable.'</td></tr>'.
-                      '<tr class="LC_odd_row">';
+        $datatable .= '</td></tr><tr class="LC_odd_row"><td>'.
+                      &mt('Course creation processed as: (choose Dom. Coord.)'). 
+                      '</td><td class="LC_left_item">'.$dctable.'</td></tr>';
         $$rowtotal ++ ;
     } else {
-        $datatable .= '</td></tr><tr>';
+        $datatable .= $dctable.'</td></tr>';
     }
-    $datatable .= '<td>'.&mt('Create pending requests for official courses (if validated)').'</td>'.
-                  '<td class="LC_right_item"><span class="LC_nobreak"><label>'.
-                  '<input type="radio" name="autocreate_req"'.
-                  $createon{'req'}.' value="1" />'.&mt('Yes').'</label>&nbsp;'.
-                  '<label><input type="radio" name="autocreate_req"'.
-                  $createoff{'req'}.' value="0" />'.&mt('No').'</label></span></td>'.
-                  '</tr>';
     return $datatable;
 }
 
@@ -2014,12 +2015,13 @@ sub print_contacts {
     my ($dom,$settings,$rowtotal) = @_;
     my $datatable;
     my @contacts = ('adminemail','supportemail');
-    my (%checked,%to,%otheremails);
+    my (%checked,%to,%otheremails,%bccemails);
     my @mailings = ('errormail','packagesmail','lonstatusmail','helpdeskmail',
                     'requestsmail');
     foreach my $type (@mailings) {
         $otheremails{$type} = '';
     }
+    $bccemails{'helpdeskmail'} = '';
     if (ref($settings) eq 'HASH') {
         foreach my $item (@contacts) {
             if (exists($settings->{$item})) {
@@ -2035,6 +2037,9 @@ sub print_contacts {
                         }
                     }
                     $otheremails{$type} = $settings->{$type}{'others'};
+                    if ($type eq 'helpdeskmail') {
+                        $bccemails{$type} = $settings->{$type}{'bcc'};
+                    }
                 }
             } elsif ($type eq 'lonstatusmail') {
                 $checked{'lonstatusmail'}{'adminemail'} = ' checked="checked" ';
@@ -2078,8 +2083,13 @@ sub print_contacts {
         }
         $datatable .= '</span><br />'.&mt('Others').':&nbsp;&nbsp;'.
                       '<input type="text" name="'.$type.'_others" '.
-                      'value="'.$otheremails{$type}.'"  />'.
-                      '</td></tr>'."\n";
+                      'value="'.$otheremails{$type}.'"  />';
+        if ($type eq 'helpdeskmail') {
+            $datatable .= '<br />'.&mt('Bcc:').('&nbsp;'x6).
+                          '<input type="text" name="'.$type.'_bcc" '.
+                          'value="'.$bccemails{$type}.'"  />';
+        }
+        $datatable .= '</td></tr>'."\n";
     }
     $$rowtotal += $rownum;
     return $datatable;
@@ -2224,22 +2234,216 @@ sub radiobutton_prefs {
 }
 
 sub print_coursedefaults {
-    my ($dom,$settings,$rowtotal) = @_;
+    my ($position,$dom,$settings,$rowtotal) = @_;
     my ($css_class,$datatable);
     my $itemcount = 1;
-    my (%checkedon,%checkedoff,%choices,%defaultchecked,@toggles);
-    %choices =
-        &Apache::lonlocal::texthash (
-            canuse_pdfforms => 'Course/Community users can create/upload PDF forms',
-    );
-    %defaultchecked = ('canuse_pdfforms' => 'off');
-    @toggles = ('canuse_pdfforms',);
-    ($datatable,$itemcount) = &radiobutton_prefs($settings,\@toggles,\%defaultchecked,
+    if ($position eq 'top') {
+        my (%checkedon,%checkedoff,%choices,%defaultchecked,@toggles);
+        %choices =
+            &Apache::lonlocal::texthash (
+                canuse_pdfforms => 'Course/Community users can create/upload PDF forms',
+        );
+        %defaultchecked = ('canuse_pdfforms' => 'off');
+        @toggles = ('canuse_pdfforms',);
+        ($datatable,$itemcount) = &radiobutton_prefs($settings,\@toggles,\%defaultchecked,
                                                  \%choices,$itemcount);
+        $$rowtotal += $itemcount;
+    } else {
+        $css_class = $itemcount%2 ? ' class="LC_odd_row"' : '';
+        my %choices =
+            &Apache::lonlocal::texthash (
+                anonsurvey_threshold => 'Responder count needed before showing submissions for anonymous surveys',
+        );
+        my $currdefresponder;
+        if (ref($settings) eq 'HASH') {
+            $currdefresponder = $settings->{'anonsurvey_threshold'};
+        }
+        if (!$currdefresponder) {
+            $currdefresponder = 10;
+        } elsif ($currdefresponder < 1) {
+            $currdefresponder = 1;
+        }
+        $datatable .=
+               '<tr'.$css_class.'><td><span class="LC_nobreak">'.$choices{'anonsurvey_threshold'}.
+                '</span></td>'.
+                '<td class="LC_right_item"><span class="LC_nobreak">'.
+                '<input type="text" name="anonsurvey_threshold"'.
+                ' value="'.$currdefresponder.'" size="5" /></span>'.
+                '</td></tr>';
+    }
+    return $datatable;
+}
+
+sub print_usersessions {
+    my ($position,$dom,$settings,$rowtotal) = @_;
+    my ($css_class,$datatable,%checked,%choices);
+    my (%by_ip,%by_location,@intdoms);
+    &build_location_hashes(\@intdoms,\%by_ip,\%by_location);
+    if (keys(%by_location) == 0) {
+        if ($position eq 'top') {
+            $datatable .= '<tr'.$css_class.'><td colspan="2">'.
+                          &mt('Nothing to set here, as the cluster to which this domain belongs only contains this institution.');
+        }
+    }
+    my %lt = &usersession_titles();
+    my $itemcount = 1;
+    my $numinrow = 5;
+    my $prefix;
+    my @types;
+    if ($position eq 'top') {
+        $prefix = 'hosted';
+        @types = ('excludedomain','includedomain');
+    } else {
+        $prefix = 'remote';
+        @types = ('version','excludedomain','includedomain');
+    }
+    my (%current,%checkedon,%checkedoff);
+    my @lcversions = &Apache::lonnet::all_loncaparevs();
+    my @locations = sort(keys(%by_location));
+    foreach my $type (@types) {
+        $checkedon{$type} = '';
+        $checkedoff{$type} = ' checked="checked"';
+    }
+    if (ref($settings) eq 'HASH') {
+        if (ref($settings->{$prefix}) eq 'HASH') {
+            foreach my $key (keys(%{$settings->{$prefix}})) {
+                $current{$key} = $settings->{$prefix}{$key};
+                if ($key eq 'version') {
+                    if ($current{$key} ne '') {
+                        $checkedon{$key} = ' checked="checked"';
+                        $checkedoff{$key} = '';
+                    }
+                } elsif (ref($current{$key}) eq 'ARRAY') {
+                    $checkedon{$key} = ' checked="checked"';
+                    $checkedoff{$key} = '';
+                }
+            }
+        }
+    }
+    foreach my $type (@types) {
+        next if ($type ne 'version' && !@locations);
+        $css_class = $itemcount%2 ? ' class="LC_odd_row"' : '';
+        $datatable .= '<tr'.$css_class.'>
+                       <td><span class="LC_nobreak">'.$lt{$type}.'</span><br />
+                           <span class="LC_nobreak">&nbsp;
+                           <label><input type="radio" name="'.$prefix.'_'.$type.'_inuse" '.$checkedoff{$type}.' value="0" />'.&mt('Not in use').'</label>&nbsp;
+                           <label><input type="radio" name="'.$prefix.'_'.$type.'_inuse" '.$checkedon{$type}.' value="1" />'.&mt('In use').'</label></span></td><td>';
+        if ($type eq 'version') {
+            my $selector = '<select name="'.$prefix.'_version">';
+            foreach my $version (@lcversions) {
+                my $selected = '';
+                if ($current{'version'} eq $version) {
+                    $selected = ' selected="selected"';
+                }
+                $selector .= ' <option value="'.$version.'"'.
+                             $selected.'>'.$version.'</option>';
+            }
+            $selector .= '</select> ';
+            $datatable .= &mt('remote server must be version: [_1] or later',$selector);
+        } else {
+            $datatable.= '<div><input type="button" value="'.&mt('check all').'" '.
+                         'onclick="javascript:checkAll(document.display.'.$prefix.'_'.$type.')"'.
+                         ' />'.('&nbsp;'x2).
+                         '<input type="button" value="'.&mt('uncheck all').'" '.
+                         'onclick="javascript:uncheckAll(document.display.'.$prefix.'_'.$type.')" />'.
+                         "\n".
+                         '</div><div><table>';
+            my $rem;
+            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);
+                if ($rem == 0) {
+                    if ($i > 0) {
+                        $datatable .= '</tr>';
+                    }
+                    $datatable .= '<tr>';
+                }
+                $datatable .= '<td class="LC_left_item">'.
+                              '<span class="LC_nobreak"><label>'.
+                              '<input type="checkbox" name="'.$prefix.'_'.$type.
+                              '" value="'.$value.'"'.$checkedtype.' />'.$showloc.
+                              '</label></span></td>';
+            }
+            $rem = @locations%($numinrow);
+            my $colsleft = $numinrow - $rem;
+            if ($colsleft > 1 ) {
+                $datatable .= '<td colspan="'.$colsleft.'" class="LC_left_item">'.
+                              '&nbsp;</td>';
+            } elsif ($colsleft == 1) {
+                $datatable .= '<td class="LC_left_item">&nbsp;</td>';
+            }
+            $datatable .= '</tr></table>';
+        }
+        $datatable .= '</td></tr>';
+        $itemcount ++;
+    }
     $$rowtotal += $itemcount;
     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} = [$ip];
+            }
+        }
+    }
+    return;
+}
+
 sub contact_titles {
     my %titles = &Apache::lonlocal::texthash (
                    'supportemail' => 'Support E-mail address',
@@ -2611,9 +2815,9 @@ sub print_usermodification {
 sub print_defaults {
     my ($dom,$rowtotal) = @_;
     my @items = ('auth_def','auth_arg_def','lang_def','timezone_def',
-                 'datelocale_def');
+                 'datelocale_def','portal_def');
     my %domdefaults = &Apache::lonnet::get_domain_defaults($dom);
-    my $titles = &defaults_titles();
+    my $titles = &defaults_titles($dom);
     my $rownum = 0;
     my ($datatable,$css_class);
     foreach my $item (@items) {
@@ -2650,8 +2854,12 @@ sub print_defaults {
             my $includeempty = 1;
             $datatable .= &Apache::loncommon::select_datelocale($item,$domdefaults{$item},undef,$includeempty);
         } else {
+            my $size;
+            if ($item eq 'portal_def') {
+                $size = ' size="25"';
+            }
             $datatable .= '<input type="text" name="'.$item.'" value="'.
-                          $domdefaults{$item}.'" />';
+                          $domdefaults{$item}.'"'.$size.' />';
         }
         $datatable .= '</td></tr>';
         $rownum ++;
@@ -2661,13 +2869,25 @@ sub print_defaults {
 }
 
 sub defaults_titles {
+    my ($dom) = @_;
     my %titles = &Apache::lonlocal::texthash (
                    'auth_def'      => 'Default authentication type',
                    'auth_arg_def'  => 'Default authentication argument',
                    'lang_def'      => 'Default language',
                    'timezone_def'  => 'Default timezone',
                    'datelocale_def' => 'Default locale for dates',
+                   'portal_def'     => 'Portal/Default URL',
                  );
+    if ($dom) {
+        my $uprimary_id = &Apache::lonnet::domain($dom,'primary');
+        my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
+        my $protocol = $Apache::lonnet::protocol{$uprimary_id};
+        $protocol = 'http' if ($protocol ne 'https');
+        if ($uint_dom) {
+            $titles{'portal_def'} .= ' '.&mt('(for example: [_1])',$protocol.'://loncapa.'.
+                                         $uint_dom);
+        }
+    }
     return (\%titles);
 }
 
@@ -3699,22 +3919,12 @@ sub modify_login {
                     }
                 }
             }
-            if (($domconfig{'login'}{'loginheader'} eq 'text') && 
-                ($env{'form.loginheader'} eq 'image')) {
-                $changes{'loginheader'} = 1;
-            } elsif (($domconfig{'login'}{'loginheader'} eq '' ||
-                      $domconfig{'login'}{'loginheader'} eq 'image') &&
-                     ($env{'form.loginheader'} eq 'text')) {
-                $changes{'loginheader'} = 1;
-            }
         }
         if (keys(%changes) > 0 || $colchgtext) {
             &Apache::loncommon::devalidate_domconfig_cache($dom);
             $resulttext = &mt('Changes made:').'<ul>';
             foreach my $item (sort(keys(%changes))) {
-                if ($item eq 'loginheader') {
-                    $resulttext .= '<li>'.&mt("$title{$item} set to $env{'form.loginheader'}").'</li>';
-                } elsif ($item eq 'loginvia') {
+                if ($item eq 'loginvia') {
                     if (ref($changes{$item}) eq 'HASH') {
                         $resulttext .= '<li>'.&mt('Log-in page availability:').'<ul>';
                         foreach my $lonhost (sort(keys(%{$changes{$item}}))) {
@@ -4769,7 +4979,7 @@ sub modify_autoupdate {
                         middlename => 'Middle Name',
                         generation => 'Generation',
                       );
-    my $othertitle = &mt('All users');
+    $othertitle = &mt('All users');
     if (keys(%{$usertypes}) >  0) {
         $othertitle = &mt('Other users');
     }
@@ -5186,7 +5396,7 @@ sub modify_contacts {
             $currsetting{$key} = $domconfig{'contacts'}{$key};
         }
     }
-    my (%others,%to);
+    my (%others,%to,%bcc);
     my @contacts = ('supportemail','adminemail');
     my @mailings = ('errormail','packagesmail','helpdeskmail','lonstatusmail',
                     'requestsmail');
@@ -5202,6 +5412,10 @@ sub modify_contacts {
         }  
         $others{$type} = $env{'form.'.$type.'_others'};
         $contacts_hash{contacts}{$type}{'others'} = $others{$type};
+        if ($type eq 'helpdeskmail') {
+            $bcc{$type} = $env{'form.'.$type.'_bcc'};
+            $contacts_hash{contacts}{$type}{'bcc'} = $bcc{$type};
+        }
     }
     foreach my $item (@contacts) {
         $to{$item} = $env{'form.'.$item};
@@ -5226,6 +5440,11 @@ sub modify_contacts {
             if ($others{$type} ne $currsetting{$type}{'others'}) {
                 push(@{$changes{$type}},'others');
             }
+            if ($type eq 'helpdeskmail') {   
+                if ($bcc{$type} ne $currsetting{$type}{'bcc'}) {
+                    push(@{$changes{$type}},'bcc'); 
+                }
+            }
         }
     } else {
         my %default;
@@ -5248,7 +5467,12 @@ sub modify_contacts {
             }
             if ($others{$type} ne '') {
                 push(@{$changes{$type}},'others');
-            } 
+            }
+            if ($type eq 'helpdeskmail') {
+                if ($bcc{$type} ne '') {
+                    push(@{$changes{$type}},'bcc');
+                }
+            }
         }
     }
     my $putresult = &Apache::lonnet::put_dom('configuration',\%contacts_hash,
@@ -5276,7 +5500,13 @@ sub modify_contacts {
                         push(@text,$others{$type});
                     }
                     $resulttext .= '<span class="LC_cusr_emph">'.
-                                   join(', ',@text).'</span></li>';
+                                   join(', ',@text).'</span>';
+                    if ($type eq 'helpdeskmail') {
+                        if ($bcc{$type} ne '') {
+                            $resulttext .= '&nbsp;'.&mt('with Bcc to').': <span class="LC_cusr_emph">'.$bcc{$type}.'</span>';
+                        }
+                    }
+                    $resulttext .= '</li>';
                 }
             }
             $resulttext .= '</ul>';
@@ -5793,7 +6023,7 @@ sub modify_defaults {
     my ($dom,$r) = @_;
     my ($resulttext,$mailmsgtxt,%newvalues,%changes,@errors);
     my %domdefaults = &Apache::lonnet::get_domain_defaults($dom);
-    my @items = ('auth_def','auth_arg_def','lang_def','timezone_def','datelocale_def');
+    my @items = ('auth_def','auth_arg_def','lang_def','timezone_def','datelocale_def','portal_def');
     my @authtypes = ('internal','krb4','krb5','localauth');
     foreach my $item (@items) {
         $newvalues{$item} = $env{'form.'.$item};
@@ -5829,6 +6059,12 @@ sub modify_defaults {
                     push(@errors,$item);
                 }
             }
+        } elsif ($item eq 'portal_def') {
+            if ($newvalues{$item} ne '') {
+                unless ($newvalues{$item} =~ /^https?\:\/\/(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])\.)*([A-Za-z]|[A-Za-z][A-Za-z0-9\-]*[A-Za-z0-9])\/?$/) {
+                    push(@errors,$item);
+                }
+            }
         }
         if (grep(/^\Q$item\E$/,@errors)) {
             $newvalues{$item} = $domdefaults{$item};
@@ -6245,7 +6481,6 @@ sub modify_serverstatuses {
     my %serverstatushash =  (
                                 serverstatuses => \%newserverstatus,
                             );
-    my %changes;
     foreach my $type (@pages) {
         foreach my $setting ('namedusers','machines') {
             my (@current,@new);
@@ -6446,7 +6681,7 @@ sub modify_coursedefaults {
     my ($resulttext,$errors,%changes,%defaultshash);
     my %defaultchecked = ('canuse_pdfforms' => 'off');
     my @offon = ('off','on');
-    my @toggles = ('canuse_pdfforms');
+    my @toggles = ();
 
     $defaultshash{'coursedefaults'} = {};
 
@@ -6475,6 +6710,18 @@ sub modify_coursedefaults {
             }
             $defaultshash{'coursedefaults'}{$item} = $env{'form.'.$item};
         }
+        my $currdefresponder = $domconfig{'coursedefaults'}{'anonsurvey_threshold'};
+        my $newdefresponder = $env{'form.anonsurvey_threshold'};
+        $newdefresponder =~ s/\D//g;
+        if ($newdefresponder eq '' || $newdefresponder < 1) {
+            $newdefresponder = 1;
+        }
+        $defaultshash{'coursedefaults'}{'anonsurvey_threshold'} = $newdefresponder;
+        if ($currdefresponder ne $newdefresponder) {
+            unless ($currdefresponder eq '' && $newdefresponder == 10) {
+                $changes{'anonsurvey_threshold'} = 1;
+            }
+        }
     }
     my $putresult = &Apache::lonnet::put_dom('configuration',\%defaultshash,
                                              $dom);
@@ -6494,6 +6741,8 @@ sub modify_coursedefaults {
                     } else {
                         $resulttext .= '<li>'.&mt('Course/Community users can create/upload PDF forms set to "off"').'</li>';
                     }
+                } elsif ($item eq 'anonsurvey_threshold') {
+                        $resulttext .= '<li>'.&mt('Responder count required for display of anonymous survey submissions set to [_1].',$defaultshash{'coursedefaults'}{'anonsurvey_threshold'}).'</li>';
                 }
             }
             $resulttext .= '</ul>';
@@ -6507,6 +6756,175 @@ sub modify_coursedefaults {
     return $resulttext;
 }
 
+sub modify_usersessions {
+    my ($dom,%domconfig) = @_;
+    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.'_'.$type.'_inuse'};
+            if ($type eq 'version') {
+                my $value = $env{'form.'.$prefix.'_'.$type};
+                my $okvalue;
+                if ($value ne '') {
+                    if (grep(/^\Q$value\E$/,@lcversions)) {
+                        $okvalue = $value;
+                    }
+                }
+                if (ref($domconfig{'usersessions'}) eq 'HASH') {
+                    if (ref($domconfig{'usersessions'}{$prefix}) eq 'HASH') {
+                        if ($domconfig{'usersessions'}{$prefix}{$type} ne '') {
+                            if ($inuse == 0) {
+                                $changes{$prefix}{$type} = 1;
+                            } else {
+                                if ($okvalue ne $domconfig{'usersessions'}{$prefix}{$type}) {
+                                    $changes{$prefix}{$type} = 1;
+                                }
+                                if ($okvalue ne '') {
+                                    $defaultshash{'usersessions'}{$prefix}{$type} = $okvalue;
+                                } 
+                            }
+                        } else {
+                            if (($inuse == 1) && ($okvalue ne '')) {
+                                $defaultshash{'usersessions'}{$prefix}{$type} = $okvalue;
+                                $changes{$prefix}{$type} = 1;
+                            }
+                        }
+                    } else {
+                        if (($inuse == 1) && ($okvalue ne '')) {
+                            $defaultshash{'usersessions'}{$prefix}{$type} = $okvalue;
+                            $changes{$prefix}{$type} = 1;
+                        }
+                    }
+                } else {
+                    if (($inuse == 1) && ($okvalue ne '')) {
+                        $defaultshash{'usersessions'}{$prefix}{$type} = $okvalue;
+                        $changes{$prefix}{$type} = 1;
+                    }
+                }
+            } else {
+                my @vals = &Apache::loncommon::get_env_multiple('form.'.$prefix.'_'.$type);
+                my @okvals;
+                foreach my $val (@vals) {
+                    if ($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,$val);
+                        }
+                    }
+                }
+                @okvals = sort(@okvals);
+                if (ref($domconfig{'usersessions'}) eq 'HASH') {
+                    if (ref($domconfig{'usersessions'}{$prefix}) eq 'HASH') {
+                        if (ref($domconfig{'usersessions'}{$prefix}{$type}) eq 'ARRAY') {
+                            if ($inuse == 0) {
+                                $changes{$prefix}{$type} = 1; 
+                            } else {
+                                $defaultshash{'usersessions'}{$prefix}{$type} = \@okvals;
+                                my @changed = &Apache::loncommon::compare_arrays($domconfig{'usersessions'}{$prefix}{$type},$defaultshash{'usersessions'}{$prefix}{$type});
+                                if (@changed > 0) {
+                                    $changes{$prefix}{$type} = 1;
+                                }
+                            }
+                        } else {
+                            if ($inuse == 1) {
+                                $defaultshash{'usersessions'}{$prefix}{$type} = \@okvals;
+                                $changes{$prefix}{$type} = 1;
+                            }
+                        } 
+                    } else {
+                        if ($inuse == 1) {
+                            $defaultshash{'usersessions'}{$prefix}{$type} = \@okvals;
+                            $changes{$prefix}{$type} = 1;
+                        }
+                    }
+                } else {
+                    if ($inuse == 1) {
+                        $defaultshash{'usersessions'}{$prefix}{$type} = \@okvals;
+                        $changes{$prefix}{$type} = 1;
+                    }
+                }
+            }
+        }
+    }
+    if (keys(%changes) > 0) {
+        my $putresult = &Apache::lonnet::put_dom('configuration',\%defaultshash,
+                                                 $dom);
+        if ($putresult eq 'ok') {
+            if (ref($defaultshash{'usersessions'}) eq 'HASH') {
+                if (ref($defaultshash{'usersessions'}{'remote'}) eq 'HASH') {
+                    $domdefaults{'remotesessions'} = $defaultshash{'usersessions'}{'remote'};
+                }
+                if (ref($defaultshash{'usersessions'}{'hosted'}) eq 'HASH') {
+                    $domdefaults{'hostedsessions'} = $defaultshash{'usersessions'}{'hosted'};
+                }
+            }
+            my $cachetime = 24*60*60;
+            &Apache::lonnet::do_cache_new('domdefaults',$dom,\%domdefaults,$cachetime);
+            my %lt = &usersession_titles();
+            $resulttext = &mt('Changes made:').'<ul>';
+            foreach my $prefix (@prefixes) {
+                if (ref($changes{$prefix}) eq 'HASH') {
+                    $resulttext .= '<li>'.$lt{$prefix}.'<ul>';
+                    foreach my $type (@types) {
+                        if (defined($changes{$prefix}{$type})) {
+                            my $newvalue;
+                            if (ref($defaultshash{'usersessions'}) eq 'HASH') {
+                                if (ref($defaultshash{'usersessions'}{$prefix})) {
+                                    if ($type eq 'version') {
+                                        $newvalue = $defaultshash{'usersessions'}{$prefix}{$type};
+                                    } elsif (ref($defaultshash{'usersessions'}{$prefix}{$type}) eq 'ARRAY') {
+                                        if (@{$defaultshash{'usersessions'}{$prefix}{$type}} > 0) {
+                                            $newvalue = join(', ',@{$defaultshash{'usersessions'}{$prefix}{$type}});
+                                        }
+                                    }
+                                }
+                            }
+                            if ($newvalue eq '') {
+                                if ($type eq 'version') {
+                                    $resulttext .= '<li>'.&mt('[_1] set to: off',$lt{$type}).'</li>';
+                                } else {
+                                    $resulttext .= '<li>'.&mt('[_1] set to: none',$lt{$type}).'</li>';
+                                }
+                            } else {
+                                if ($type eq 'version') {
+                                    $newvalue .= ' '.&mt('(or later)'); 
+                                } 
+                                $resulttext .= '<li>'.&mt('[_1] set to: [_2].',$lt{$type},$newvalue).'</li>'; 
+                            }
+                        }
+                    }
+                    $resulttext .= '</ul>';
+                }
+            }
+            $resulttext .= '</ul>';
+        } else {
+            $resulttext = '<span class="LC_error">'.
+                          &mt('An error occurred: [_1]',$putresult).'</span>';
+        }
+    } else {
+        $resulttext =  &mt('No changes made to settings for user session hosting.');
+    }
+    return $resulttext;
+}
+
 sub recurse_check {
     my ($chkcats,$categories,$depth,$name) = @_;
     if (ref($chkcats->[$depth]{$name}) eq 'ARRAY') {
@@ -6650,4 +7068,15 @@ sub active_dc_picker {
     return ($numdcs,$datatable);
 }
 
+sub usersession_titles {
+    return &Apache::lonlocal::texthash(
+               hosted => 'Hosting of sessions for users from other domains on servers in this domain',
+
+               remote => 'Hosting of sessions for users in this domain on servers in other domains',
+               version => 'LON-CAPA version requirement',
+               excludedomain => 'Allow all, but exclude specific domains',
+               includedomain => 'Deny all, but include specific domains',
+           );
+}
+
 1;