coolaj86
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dig.js
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WIP recursively resolve

This commit is contained in:
AJ ONeal 2017-09-20 12:29:43 -06:00
parent 36d7aaccbb
commit 03e3e527dc
1 changed files with 19 additions and 5 deletions
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24
bin/digd.js
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@ -1,11 +1,13 @@
'use strict'; 'use strict';
var cli = require('cli'); var cli = require('cli');
var dns = require('dns');
var dgram = require('dgram'); var dgram = require('dgram');
var dnsjs = require('dns-suite'); var dnsjs = require('dns-suite');
var hexdump = require('../hexdump'); var hexdump = require('../hexdump');
var crypto = require('crypto'); var crypto = require('crypto');
var common = require('../common'); var common = require('../common');
var defaultNameservers = require('dns').getServers();
cli.parse({ cli.parse({
// 'b': [ false, 'set source IP address (defaults to 0.0.0.0)', 'string' ] // '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' ] , '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' ] , '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' ] , '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' ] //, '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' ] , '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' ] , '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.writeQuery(cli, query, queryAb);
//common.writeResponse(opts, query, nb, packet); //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 () { handlers.onListening = function () {
/*jshint validthis:true*/ /*jshint validthis:true*/
var server = this; var server = this;
var nameserver = cli.nameserver; var nameserver = cli.nameserver;
var nameservers;
var index; var index;
if (!nameserver) { if (!nameserver) {
nameservers = require('dns').getServers(); index = crypto.randomBytes(2).readUInt16BE(0) % defaultNameservers.length;
index = crypto.randomBytes(2).readUInt16BE(0) % nameservers.length; nameserver = defaultNameservers[index];
nameserver = nameservers[index];
if (cli.debug) { if (cli.debug) {
console.log(index, nameservers); console.log(index, defaultNameservers);
} }
} }