system: there is no dnscache

src/etc/inc/ipsec.inc

@@ -525,7 +525,6 @@ function ipsec_configure()
 
             if (!is_ipaddr($rg)) {
                 $filterdns_list[] = "{$rg}";
-                add_hostname_to_watch($rg);
                 if(! file_exists("/var/run/booting")) {
                     $rg = resolve_retry($rg);
                 }

src/etc/inc/pfsense-utils.inc

@@ -215,39 +215,6 @@ function reload_ttys()
     exec('/bin/kill -HUP 1');
 }
 
-function add_hostname_to_watch($hostname) {
-    if (!is_dir("/var/db/dnscache")) {
-        mkdir("/var/db/dnscache");
-    }
-    $result = array();
-    if((is_fqdn($hostname)) && (!is_ipaddr($hostname))) {
-        $domrecords = array();
-        $domips = array();
-        exec("host -t A " . escapeshellarg($hostname), $domrecords, $rethost);
-        if($rethost == 0) {
-            foreach($domrecords as $domr) {
-                $doml = explode(" ", $domr);
-                $domip = $doml[3];
-                /* fill array with domain ip addresses */
-                if(is_ipaddr($domip)) {
-                    $domips[] = $domip;
-                }
-            }
-        }
-        sort($domips);
-        $contents = "";
-        if(! empty($domips)) {
-            foreach($domips as $ip) {
-                $contents .= "$ip\n";
-            }
-        }
-        file_put_contents("/var/db/dnscache/$hostname", $contents);
-        /* Remove empty elements */
-        $result = array_filter(explode("\n", $contents), 'strlen');
-    }
-    return $result;
-}
-
 function is_fqdn($fqdn) {
     $hostname = false;
     if (preg_match("/[-A-Z0-9\.]+\.[-A-Z0-9\.]+/i", $fqdn)) {

src/etc/inc/system.inc

@@ -2,6 +2,7 @@
 
 /*
     Copyright (C) 2016 Franco Fichtner <franco@opnsense.org>
+    Copyright (C) 2004-2007 Scott Ullrich <sullrich@gmail.com>
     Copyright (C) 2003-2004 Manuel Kasper <mk@neon1.net>
     All rights reserved.
 
@@ -583,19 +584,10 @@ function system_routing_configure($interface = '')
     return 0;
 }
 
-/* Compare the current hostname DNS to the DNS cache we made
- * if it has changed we return the old records
- * if no change we return false */
-function compare_hostname_to_dnscache($hostname) {
-    if(!is_dir("/var/db/dnscache")) {
-        mkdir("/var/db/dnscache");
-    }
-    $hostname = trim($hostname);
-    if(is_readable("/var/db/dnscache/{$hostname}")) {
-        $oldcontents = file_get_contents("/var/db/dnscache/{$hostname}");
-    } else {
-        $oldcontents = "";
-    }
+function add_hostname_to_watch($hostname)
+{
+    $result = array();
+
     if((is_fqdn($hostname)) && (!is_ipaddr($hostname))) {
         $domrecords = array();
         $domips = array();
@@ -617,14 +609,12 @@ function compare_hostname_to_dnscache($hostname) {
                 $contents .= "$ip\n";
             }
         }
-    }
 
-    if(trim($oldcontents) != trim($contents)) {
-        log_error(sprintf('DNSCACHE: Found old IP %s and new IP %s', $oldcontents, $contents));
-        return ($oldcontents);
-    } else {
-        return false;
+        /* Remove empty elements */
+        $result = array_filter(explode("\n", $contents), 'strlen');
     }
+
+    return $result;
 }
 
 function system_staticroutes_configure($interface = '')