Add IPv6 support to DNSBL lookups

Author: dwfreed

lib/dnsbl.js

@@ -29,6 +29,14 @@ var vasync = require('vasync');
 }
 */
 
+function to_revip(ip) {
+  if (ip.kind() === 'ipv6') {
+    return ip.toFixedLengthString().split(':').join('').split('').reverse().join('.');
+  } else {
+    return ip.toString().split('.').reverse().join('.');
+  }
+}
+
 function DNSBLQuery(options, cb) {
   if (!(this instanceof DNSBLQuery))
     return new DNSBLQuery(options, cb);
@@ -45,8 +53,7 @@ function DNSBLQuery(options, cb) {
 
   var q = this.dnsbl_parallel = vasync.queue(dnsblQuery, options.parallel || 4);
 
-  // TODO IPv6
-  var revip = options.ip.split('.').reverse().join('.');
+  var revip = to_revip(options.ip);
 
   var servers = Object.keys(options.servers);
 

lib/dnsfilter.js

@@ -77,7 +77,7 @@ DNSFilter.prototype._transform = function dnsfltrTransform(client, enc, cb) {
       },
       function dnsblQuery(next) {
         DNSBLQuery({
-          ip: client.remoteParsedAddressString,
+          ip: client.remoteParsedAddress,
           servers: self.dnsfltr_config.servers,
         }, next);
       },

package.json

@@ -24,7 +24,7 @@
   },
   "dependencies": {
     "bunyan": "^1.8.0",
-    "ipaddr.js": "^1.2.0",
+    "ipaddr.js": "^1.9.0",
     "lstream": "0.0.4",
     "socket.io": "^1.3.5",
     "vasync": "^1.6.3",