--- loncom/interface/domainprefs.pm	2010/02/22 18:28:13	1.127
+++ loncom/interface/domainprefs.pm	2010/03/03 16:43:41	1.128
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Handler to set domain-wide configuration settings
 #
-# $Id: domainprefs.pm,v 1.127 2010/02/22 18:28:13 raeburn Exp $
+# $Id: domainprefs.pm,v 1.128 2010/03/03 16:43:41 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -664,9 +664,12 @@ sub print_login {
         my %servers = &dom_servers($dom);
         my $choice = $choices{'disallowlogin'};
         $css_class = ' class="LC_odd_row"';
-        $datatable .= '<tr'.$css_class.'><td>'.$choices{'disallowlogin'}.'</td>'.
+        $datatable .= '<tr'.$css_class.'><td>'.$choice.'</td>'.
                       '<td align="right"><table><tr><th>'.$choices{'hostid'}.'</th>'.
-                      '<th>'.$choices{'serverurl'}.'</th></tr>'."\n";
+                      '<th>'.$choices{'server'}.'</th>'.
+                      '<th>'.$choices{'serverpath'}.'</th>'.
+                      '<th>'.$choices{'custompath'}.'</th>'.
+                      '<th><span class="LC_nobreak">'.$choices{'exempt'}.'</span></th></tr>'."\n";
         my %disallowed;
         if (ref($settings) eq 'HASH') {
             if (ref($settings->{'loginvia'}) eq 'HASH') {
@@ -675,23 +678,52 @@ sub print_login {
         }
         foreach my $lonhost (sort(keys(%servers))) {
             my $direct = 'selected="selected"';
-            if ($disallowed{$lonhost} eq '') {
-                $direct = '';
+            if (ref($disallowed{$lonhost}) eq 'HASH') {
+                if ($disallowed{$lonhost}{'server'} ne '') {
+                    $direct = '';
+                }
             }
             $datatable .= '<tr><td>'.$servers{$lonhost}.'</td>'.
-                          '<td><select name="'.$lonhost.'_serverurl">'.
+                          '<td><select name="'.$lonhost.'_server">'.
                           '<option value=""'.$direct.'>'.$choices{'directlogin'}.
                           '</option>';
             foreach my $hostid (keys(%servers)) {
                 next if ($servers{$hostid} eq $servers{$lonhost});
                 my $selected = '';
-                if ($hostid eq $disallowed{$lonhost}) {
-                    $selected = 'selected="selected"';
+                if (ref($disallowed{$lonhost}) eq 'HASH') {
+                    if ($hostid eq $disallowed{$lonhost}{'server'}) {
+                        $selected = 'selected="selected"';
+                    }
                 }
                 $datatable .= '<option value="'.$hostid.'"'.$selected.'>'.
                               $servers{$hostid}.'</option>';
             }
-            $datatable .= '</select></td></tr>';
+            $datatable .= '</select></td>'.
+                          '<td><select name="'.$lonhost.'_serverpath">';
+            foreach my $path ('','/','/adm/login','/adm/roles','custom') {
+                my $pathname = $path;
+                if ($path eq 'custom') {
+                    $pathname = &mt('Custom Path').' ->';
+                }
+                my $selected = '';
+                if (ref($disallowed{$lonhost}) eq 'HASH') {
+                    if ($path eq $disallowed{$lonhost}{'serverpath'}) {
+                        $selected = 'selected="selected"';
+                    }
+                } elsif ($path eq '') {
+                    $selected = 'selected="selected"';
+                }
+                $datatable .= '<option value="'.$path.'"'.$selected.'>'.$pathname.'</option>';
+            }
+            $datatable .= '</select></td>';
+            my ($custom,$exempt);
+            if (ref($disallowed{$lonhost}) eq 'HASH') {
+                $custom = $disallowed{$lonhost}{'custompath'};
+                $exempt = $disallowed{$lonhost}{'exempt'};
+            }
+            $datatable .= '<td><input type="text" name="'.$lonhost.'_custompath" size="6" value="'.$custom.'" /></td>'.
+                          '<td><input type="text" name="'.$lonhost.'_exempt" size="8" value="'.$exempt.'" /></td>'.
+                          '</tr>';
         }
         $datatable .= '</table></td></tr>';
         return $datatable;
@@ -835,7 +867,10 @@ sub login_choices {
             adminmail     => "Display Administrator's E-mail Address?",
             disallowlogin => "Login page requests redirected",
             hostid        => "Server",
-            serverurl     => "Redirect to log-in via:",
+            server        => "Redirect to:",
+            serverpath    => "Path",
+            custompath    => "Custom", 
+            exempt        => "Exempt IP(s)",
             directlogin   => "No redirect",
             newuser       => "Link to create a user account",
             img           => "Header",
@@ -3506,19 +3541,86 @@ sub modify_login {
     }
 
     my %servers = &dom_servers($dom);
+    my @loginvia_attribs = ('serverpath','custompath','exempt');
     if (keys(%servers) > 1) {
         foreach my $lonhost (keys(%servers)) {
-            next if ($env{'form.'.$lonhost.'_serverurl'} eq $lonhost);
-            if ($env{'form.'.$lonhost.'_serverurl'} eq $curr_loginvia{$lonhost}) {
-                $loginhash{login}{loginvia}{$lonhost} = $curr_loginvia{$lonhost};                next;
-            }
-            if ($curr_loginvia{$lonhost} ne '') {
-                $loginhash{login}{loginvia}{$lonhost} = $env{'form.'.$lonhost.'_serverurl'};
-                $changes{'loginvia'}{$lonhost} = 1;
+            next if ($env{'form.'.$lonhost.'_server'} eq $lonhost);
+            if (ref($curr_loginvia{$lonhost}) eq 'HASH') {
+                if ($env{'form.'.$lonhost.'_server'} eq $curr_loginvia{$lonhost}{'server'}) {
+                    $loginhash{login}{loginvia}{$lonhost}{'server'} = $curr_loginvia{$lonhost}{'server'};
+                } elsif ($curr_loginvia{$lonhost}{'server'} ne '') {
+                    if (defined($servers{$env{'form.'.$lonhost.'_server'}})) {
+                        $loginhash{login}{loginvia}{$lonhost}{'server'} = $env{'form.'.$lonhost.'_server'};
+                        $changes{'loginvia'}{$lonhost} = 1;
+                    } else {
+                        $loginhash{login}{loginvia}{$lonhost}{'server'} = '';
+                        $changes{'loginvia'}{$lonhost} = 1;
+                    }
+                } else {
+                    if (defined($servers{$env{'form.'.$lonhost.'_server'}})) {
+                        $loginhash{login}{loginvia}{$lonhost}{'server'} = $env{'form.'.$lonhost.'_server'};
+                        $changes{'loginvia'}{$lonhost} = 1;
+                    }
+                }
+                if ($loginhash{login}{loginvia}{$lonhost}{'server'} eq '') {
+                    foreach my $item (@loginvia_attribs) {
+                        $loginhash{login}{loginvia}{$lonhost}{$item} = '';
+                    }
+                } else {
+                    foreach my $item (@loginvia_attribs) {
+                        my $new = $env{'form.'.$lonhost.'_'.$item};
+                        if (($item eq 'serverpath') && ($new eq 'custom')) {
+                            $env{'form.'.$lonhost.'_custompath'} =~ s/\s+//g;
+                            if ($env{'form.'.$lonhost.'_custompath'} eq '') {
+                                $new = '/';
+                            }
+                        }
+                        if (($item eq 'custompath') && 
+                            ($env{'form.'.$lonhost.'_serverpath'} ne 'custom')) {
+                            $new = '';
+                        }
+                        if ($new ne $curr_loginvia{$lonhost}{$item}) {
+                            $changes{'loginvia'}{$lonhost} = 1;
+                        }
+                        if ($item eq 'exempt') {
+                            $new =~ s/^\s+//;
+                            $new =~ s/\s+$//;
+                            my @poss_ips = split(/\s*[,:]\s*/,$new);
+                            my @okips;
+                            foreach my $ip (@poss_ips) {
+                                if ($ip =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/) {
+                                    if (($1 <= 255) && ($2 <= 255) && ($3 <= 255) && ($4 <= 255)) {
+                                        push(@okips,$ip); 
+                                    }
+                                }
+                            }
+                            if (@okips > 0) {
+                                $new = join(',',@okips); 
+                            } else {
+                                $new = ''; 
+                            }
+                        }
+
+                        $loginhash{login}{loginvia}{$lonhost}{$item} = $new;
+                    }
+                }
             } else {
-                if (defined($servers{$env{'form.'.$lonhost.'_serverurl'}})) {
-                    $loginhash{login}{loginvia}{$lonhost} = $env{'form.'.$lonhost.'_serverurl'};
+                if (defined($servers{$env{'form.'.$lonhost.'_server'}})) {
+                    $loginhash{login}{loginvia}{$lonhost}{'server'} = $env{'form.'.$lonhost.'_server'};
                     $changes{'loginvia'}{$lonhost} = 1;
+                    foreach my $item (@loginvia_attribs) {
+                        my $new = $env{'form.'.$lonhost.'_'.$item};
+                        if (($item eq 'serverpath') && ($new eq 'custom')) {
+                            if ($env{'form.'.$lonhost.'_custompath'} eq '') {
+                                $new = '/';
+                            }
+                        }
+                        if (($item eq 'custompath') && 
+                            ($env{'form.'.$lonhost.'_serverpath'} ne 'custom')) {
+                            $new = '';
+                        }
+                        $loginhash{login}{loginvia}{$lonhost}{$item} = $new;
+                    }
                 }
             }
         }
@@ -3574,13 +3676,30 @@ sub modify_login {
                     if (ref($changes{$item}) eq 'HASH') {
                         $resulttext .= '<li>'.&mt('Log-in page availability:').'<ul>';
                         foreach my $lonhost (sort(keys(%{$changes{$item}}))) {
-                            if ($servers{$env{'form.'.$lonhost.'_serverurl'}} ne '') {
-                                $resulttext .= '<li>'.&mt('Server: [_1] log-in page now redirects to [_2]',$lonhost,$servers{$env{'form.'.$lonhost.'_serverurl'}}).'</li>';
+                            if (defined($servers{$loginhash{login}{loginvia}{$lonhost}{'server'}})) {
+                                if (ref($loginhash{login}{loginvia}{$lonhost}) eq 'HASH') {
+                                    my $protocol = $Apache::lonnet::protocol{$env{'form.'.$lonhost.'_server'}};
+                                    $protocol = 'http' if ($protocol ne 'https');
+                                    my $target = $protocol.'://'.$servers{$env{'form.'.$lonhost.'_server'}};
+
+                                    if ($loginhash{login}{loginvia}{$lonhost}{'serverpath'} eq 'custom') {
+                                        $target .= $loginhash{login}{loginvia}{$lonhost}{'custompath'};
+                                    } else {
+                                        $target .= $loginhash{login}{loginvia}{$lonhost}{'serverpath'}; 
+                                    }
+                                    $resulttext .= '<li>'.&mt('Server: [_1] log-in page redirects to [_2].',$servers{$lonhost},'<a href="'.$target.'">'.$target.'</a>');
+                                    if ($loginhash{login}{loginvia}{$lonhost}{'exempt'} ne '') {
+                                        $resulttext .= '&nbsp;'.&mt('No redirection for clients from following IPs:').'&nbsp;'.$loginhash{login}{loginvia}{$lonhost}{'exempt'};
+                                    }
+                                    $resulttext .= '</li>';
+                                } else {
+                                    $resulttext .= '<li>'.&mt('Server: [_1] has standard log-in page.',$lonhost).'</li>';
+                                }
                             } else {
-                                $resulttext .= '<li>'.&mt('Server: [_1] now has standard log-in page.',$lonhost).'</li>';
+                                $resulttext .= '<li>'.&mt('Server: [_1] has standard log-in page.',$servers{$lonhost}).'</li>';
                             }
                         }
-                        $resulttext .= '</ul></li>'; 
+                        $resulttext .= '</ul></li>';
                     }
                 } else {
                     $resulttext .= '<li>'.&mt("$title{$item} set to $offon[$env{'form.'.$item}]").'</li>';