From 03e3e527dcc3110b8259cfddbfd5ec26f30ea0ab Mon Sep 17 00:00:00 2001
From: AJ ONeal <aj@daplie.com>
Date: Wed, 20 Sep 2017 12:29:43 -0600
Subject: [PATCH] WIP recursively resolve

---
 bin/digd.js | 24 +++++++++++++++++++-----
 1 file changed, 19 insertions(+), 5 deletions(-)

diff --git a/bin/digd.js b/bin/digd.js
index 8d973cc..de3f662 100644
--- a/bin/digd.js
+++ b/bin/digd.js
@@ -1,11 +1,13 @@
 'use strict';
 
 var cli = require('cli');
+var dns = require('dns');
 var dgram = require('dgram');
 var dnsjs = require('dns-suite');
 var hexdump = require('../hexdump');
 var crypto = require('crypto');
 var common = require('../common');
+var defaultNameservers = require('dns').getServers();
 
 cli.parse({
 //  'b': [ false, 'set source IP address (defaults to 0.0.0.0)', 'string' ]
@@ -21,6 +23,7 @@ cli.parse({
 , 'output': [ 'o', 'output prefix to use for writing query and response(s) to disk', 'file' ]
 , 'address': [ false, 'ip address(es) to listen on (defaults to 0.0.0.0,::0)', 'string' ]
 , 'port': [ 'p', 'port (defaults to 53 for dns and 5353 for mdns)', 'int' ]
+, 'nameserver': [ false, 'the nameserver(s) to use for recursive lookups (defaults to ' + defaultNameservers.join(',') + ')', 'string' ]
 //, 'serve': [ 's', 'path to json file with array of responses to issue for given queries', 'string' ]
 , 'type': [ 't', 'type (defaults to ANY for dns and PTR for mdns)', 'string' ]
 , 'query': [ 'q', 'a superfluous explicit option to set the query as a command line flag' ]
@@ -128,20 +131,31 @@ cli.main(function (args, cli) {
       common.writeQuery(cli, query, queryAb);
       //common.writeResponse(opts, query, nb, packet);
     }
+
+    if (!cli.norecurse) {
+      // ANY, A, AAAA, CNAME, MX, NAPTR, NS, PTR, SOA, SRV, TXT
+      var count = query.question.length;
+      query.question.forEach(function (q) {
+        dns.resolve(q.name, q.typeName, function () {
+          count -= 1;
+          if (!count) {
+          }
+        });
+        console.log(';' + q.name + '.', ' ', q.className, q.typeName);
+      });
+    }
   };
   handlers.onListening = function () {
     /*jshint validthis:true*/
     var server = this;
     var nameserver = cli.nameserver;
-    var nameservers;
     var index;
 
     if (!nameserver) {
-      nameservers = require('dns').getServers();
-      index = crypto.randomBytes(2).readUInt16BE(0) % nameservers.length;
-      nameserver = nameservers[index];
+      index = crypto.randomBytes(2).readUInt16BE(0) % defaultNameservers.length;
+      nameserver = defaultNameservers[index];
       if (cli.debug) {
-        console.log(index, nameservers);
+        console.log(index, defaultNameservers);
       }
     }