Allow commenting out of hosts file entries

net/CHANGELOG

@@ -77,3 +77,5 @@ Added support for IPv6, DHCP and new ethernet device names on FreeBSD.
 Added support for configuring intefaces with the "ip" command, as seen on RHEL 7, CentOS 7 and other new Linux distributions.
 ---- Changes since 1.760 ----
 On CentOS, Fedora and Redhat systems, the DNSn lines in ifcfg-* files are now updated in sync with resolv.conf.
+---- Changes since 1.910 ----
+Added an option to disable (comment out) hosts file entries.

net/edit_host.cgi

@@ -7,6 +7,7 @@ $access{'hosts'} == 2 || &error($text{'hosts_ecannot'});
 &ReadParse();
 if ($in{'new'}) {
 	&ui_print_header(undef, $text{'hosts_create'}, "");
+	$h = { 'active' => 1 };
 	}
 else {
 	&ui_print_header(undef, $text{'hosts_edit'}, "");
@@ -20,6 +21,10 @@ print &ui_hidden("new", $in{'new'});
 print &ui_hidden("idx", $in{'idx'});
 print &ui_table_start($text{'hosts_detail'}, undef, 2);
 
+# Active?
+print &ui_table_row($text{'hosts_active'},
+	&ui_yesno_radio("active", $h->{'active'}));
+
 # IP address
 print &ui_table_row($text{'hosts_ip'},
 	&ui_textbox("address", $h->{'address'}, 30));

net/lang/en

@@ -221,6 +221,7 @@ dns_hoststoo=Update hostname in host addresses if changed?
 dns_dhcp=Hostname is set by DHCP server?
 
 hosts_title=Host Addresses
+hosts_active=Enabled?
 hosts_ip=IP Address
 hosts_host=Hostnames
 hosts_add=Add a new host address.

net/list_hosts.cgi

@@ -16,16 +16,21 @@ if ($access{'hosts'} == 2) {
 	}
 print &ui_columns_start([ $access{'hosts'} == 2 ? ( "" ) : ( ),
 			  $text{'hosts_ip'},
+			  $text{'hosts_active'},
 			  $text{'hosts_host'} ], undef, 0, \@tds);
 foreach $h (&list_hosts()) {
 	local @cols;
+	local $lnk;
 	if ($access{'hosts'} == 2) {
-		push(@cols, "<a href=\"edit_host.cgi?idx=$h->{'index'}\">".
-			    &html_escape($h->{'address'})."</a>");
+		$lnk = &ui_link("edit_host.cgi?idx=$h->{'index'}",
+			        &html_escape($h->{'address'}));
 		}
 	else {
-		push(@cols, &html_escape($h->{'address'}));
+		$lnk = &html_escape($h->{'address'});
 		}
+	push(@cols, $lnk);
+	push(@cols, $h->{'active'} ? $text{'yes'}
+				   : "<font color=red>$text{'no'}</font>");
 	push(@cols, join(" , ", map { &html_escape($_) }
 				    @{$h->{'hosts'}}));
 	if ($access{'hosts'} == 2) {

net/net-lib.pl

@@ -39,14 +39,19 @@ local $line="";
 
 &open_readfile(HOSTS, $config{'hosts_file'});
 while($line=<HOSTS>) {
+	local $comment = 0;
 	$line =~ s/\r|\n//g;
+	if ($line =~ s/^\s*#+\s*//) {
+		$comment = 1;
+		}
 	$line =~ s/#.*$//g;
 	$line =~ s/\s+$//g;
-	local(@f)=split(/\s+/, $line);
-	local($ipaddr)=shift(@f);
+	local @f = split(/\s+/, $line);
+	local $ipaddr = shift(@f);
 	if (check_ipaddress_any($ipaddr)) {
 		push(@rv, { 'address' => $ipaddr,
 			    'hosts' => [ @f ],
+			    'active' => !$comment,
 			    'line', $lnum,
 			    'index', scalar(@rv) });
 		}
@@ -56,12 +61,22 @@ close(HOSTS);
 return @rv;
 }
 
+# make_host_line(&host)
+# Internal function to return a line for the hosts file
+sub make_host_line
+{
+local ($host) = @_;
+return ($host->{'active'} ? "" : "# ").
+       $host->{'address'}."\t".join(" ",@{$host->{'hosts'}})."\n";
+}
+
 # create_host(&host)
 # Add a new host to /etc/hosts
 sub create_host
 {
+local ($host) = @_;
 &open_tempfile(HOSTS, ">>$config{'hosts_file'}");
-&print_tempfile(HOSTS, $_[0]->{'address'},"\t",join(" ",@{$_[0]->{'hosts'}}),"\n");
+&print_tempfile(HOSTS, &make_host_line($host));
 &close_tempfile(HOSTS);
 }
 
@@ -69,16 +84,17 @@ sub create_host
 # Update the address and hosts of a line in /etc/hosts
 sub modify_host
 {
+local ($host) = @_;
 &replace_file_line($config{'hosts_file'},
-		   $_[0]->{'line'},
-		   $_[0]->{'address'}."\t".join(" ",@{$_[0]->{'hosts'}})."\n");
+		   $_[0]->{'line'}, &make_host_line($host));
 }
 
 # delete_host(&host)
 # Delete a host from /etc/hosts
 sub delete_host
 {
-&replace_file_line($config{'hosts_file'}, $_[0]->{'line'});
+local ($host) = @_;
+&replace_file_line($config{'hosts_file'}, $host->{'line'});
 }
 
 # list_ipnodes()

net/save_host.cgi

@@ -26,7 +26,8 @@ else {
 	if ($in{'new'}) {
 		# saving a host
 		$host = { 'address' => $in{'address'},
-			  'hosts' => \@h };
+			  'hosts' => \@h,
+			  'active' => $in{'active'} };
 		&create_host($host);
 		}
 	else {
@@ -34,6 +35,7 @@ else {
 		$host = $hosts[$in{'idx'}];
 		$host->{'address'} = $in{'address'};
 		$host->{'hosts'} = \@h;
+		$host->{'active'} = $in{'active'};
 		&modify_host($host);
 		}
 	}