setup query
This commit is contained in:
AJ ONeal
commit
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test/fixtures/*.json
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node_modules
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.*.sw*
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dig.js
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======
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Create and capture DNS and mDNS query and response packets to disk as binary and/or JSON.
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Options are similar to the Unix `dig` command.
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Install
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-------
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```bash
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npm install -g 'git+https://git@git.daplie.com/Daplie/dig.js.git#v1'
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```
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If you don't have `git` installed you can also try the npm repo:
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```bash
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npm install -g dig.js
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```
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Usage
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-----
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### Format
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```bash
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dig.js [TYPE] <domainname>
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```
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### Example
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```bash
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dig.js daplie.com
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```
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### mDNS Browser Example
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This is pretty much an mDNS browser
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```bash
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dig.js --mdns _services._dns-sd._udp.local
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```
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Really the `--mdns` option is just an alias for setting all of these options as the default:
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```bash
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dig.js -p 5353 @224.0.0.251 PTR _services._dns-sd._udp.local
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```
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### Moar Examples
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```bash
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dig.js A daplie.com
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dig.js -t A daplie.com
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dig.js @8.8.8.8 A daplie.com
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```
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Options
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-------
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```
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--debug
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--mdns
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-t <type> (superfluous)
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-c <class>
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-p <port>
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-q <query> (superfluous)
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```
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'use strict';
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var dnsjs = require('../../dns-lint');
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var cli = require('cli');
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cli.parse({
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// 'b': [ false, 'set source IP address (defaults to 0.0.0.0)', 'string' ]
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'class': [ 'c', 'class (defaults to IN)', 'string', 'IN' ]
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, 'debug': [ 'false', 'more verbose output', 'boolean', false ]
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//, 'insecure': [ false, 'turn off RaNDOm cAPS required for securing queries']
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//, 'ipv4': [ '4', 'use ipv4 exclusively (defaults to false)', 'boolean', false ]
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//, 'ipv6': [ '6', 'use ipv6 exclusively (defaults to false)', 'boolean', false ]
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//, 'json': [ false, 'output results as json', 'string' ]
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//, 'lint': [ false, 'attack (in the metaphorical sense) a nameserver with all sorts of queries to test for correct responses', 'string', false ]
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, 'mdns': [ false, "Alias for setting defaults to -p 5353 @224.0.0.251 -t PTR -q _services._dns-sd._udp.local and waiting for multiple responses", 'boolean', false ]
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, 'output': [ 'o', 'output prefix to use for writing query and response(s) to disk', 'file' ]
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, 'port': [ 'p', 'port (defaults to 53 for dns and 5353 for mdns)', 'int' ]
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//, 'serve': [ 's', 'path to json file with array of responses to issue for given queries', 'string' ]
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, 'type': [ 't', 'type (defaults to ANY for dns and PTR for mdns)', 'string' ]
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, 'query': [ 'q', 'a superfluous explicit option to set the query as a command line flag' ]
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});
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var PromiseA = require('bluebird');
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var fs = PromiseA.promisifyAll(require('fs'));
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var dgram = require('dgram');
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var commonTypes = [ 'A', 'AAAA', 'CNAME', 'MX', 'NS', 'PTR', 'SOA', 'SRV', 'TXT' ];
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function hexdump(ab) {
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var ui8 = new Uint8Array(ab);
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var bytecount = 0;
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var head = ' 0 1 2 3 4 5 6 7 8 9 A B C D E F';
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var trail;
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var str = [].slice.call(ui8).map(function (i) {
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var h = i.toString(16);
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if (h.length < 2) {
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h = '0' + h;
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}
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return h;
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}).join('').match(/.{1,2}/g).join(' ').match(/.{1,48}/g).map(function (str) {
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var lead = bytecount.toString(16);
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bytecount += 16;
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while (lead.length < 7) {
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lead = '0' + lead;
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}
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return lead + ' ' + str;
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}).join('\n');
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trail = ab.byteLength.toString(16);
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while (trail.length < 7) {
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trail = '0' + trail;
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}
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return head + '\n' + str + '\n' + trail;
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}
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cli.main(function (args, cli) {
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args.forEach(function (arg) {
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if (-1 !== commonTypes.indexOf(arg.toUpperCase())) {
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if (cli.type) {
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console.error("'type' was specified more than once");
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process.exit(1);
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return;
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}
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cli.type = cli.t = arg.toUpperCase();
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}
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if (/^@/.test(arg)) {
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if (cli.nameserver) {
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console.error("'@server' was specified more than once");
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process.exit(1);
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return;
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}
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cli.nameserver = cli.n = arg;
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}
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if (cli.query) {
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console.error("'@server' was specified more than once");
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process.exit(1);
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return;
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}
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cli.query = cli.q = arg;
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});
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if (cli.mdns) {
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if (!cli.type) {
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cli.type = cli.t = 'PTR';
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}
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if (!cli.port) {
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cli.port = cli.p = 5353;
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}
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}
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if (!cli.type) {
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cli.type = cli.t = 'ANY';
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}
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if (!cli.port) {
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cli.port = cli.p = 53;
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}
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if (!cli.class) {
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cli.class = cli.c = 'IN';
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}
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if (!cli.query) {
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console.error('');
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console.error('Usage:');
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console.error('dig.js [@server] [TYPE] [domain]');
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console.error('');
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console.error('Example:');
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console.error('dig.js daplie.com');
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console.error('');
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process.exit(1);
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}
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var query = {
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header: {
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id: require('crypto').randomBytes(2).readUInt16BE(0)
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, qr: 0
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, opcode: 0
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, aa: 0 // NA
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, tc: 0 // NA
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, rd: 1
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, ra: 0 // NA
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, rcode: 0 // NA
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}
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, question: [
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{ name: cli.query
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, typeName: cli.type
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, className: cli.class
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}
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]
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};
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var queryAb = dnsjs.DNSPacket.write(query);
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if (cli.debug) {
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console.log('');
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console.log('DNS Question:');
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console.log('');
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console.log(query);
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console.log('');
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console.log(hexdump(queryAb));
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console.log('');
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console.log(dnsjs.DNSPacket.parse(queryAb));
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console.log('');
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}
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process.exit(1);
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var server = dgram.createSocket({
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type: 'udp4'
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, reuseAddr: true
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});
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var handlers = {};
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handlers.onError = function (err) {
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console.error("error:", err.stack);
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server.close();
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};
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handlers.onMessage = function (buffer) {
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var path = require('path');
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var filename = type + '-' + count + '.mdns.bin';
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var fullpath = path.join('samples', filename);
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count += 1;
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fs.writeFileAsync(fullpath, buffer).then(function () {
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console.log('wrote ' + buffer.length + ' bytes to ' + fullpath);
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});
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};
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handlers.onListening = function () {
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/*jshint validthis:true*/
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var server = this;
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console.log(server.address());
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server.setBroadcast(true);
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server.addMembership('224.0.0.251');
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};
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server.on('error', handlers.onError);
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server.on('message', handlers.onMessage);
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server.on('listening', handlers.onListening);
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// 53 dns
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// 5353 mdns
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server.bind(5353);
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});
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@ -0,0 +1,26 @@
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{
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"name": "dig.js",
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"version": "1.0.0",
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"description": "Create and capture DNS and mDNS query and response packets to disk as binary and/or JSON. Options are similar to the Unix `dig` command.",
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"main": "index.js",
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"scripts": {
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"test": "echo \"Error: no test specified\" && exit 1"
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},
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"repository": {
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"type": "git",
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"url": "git@git.daplie.com:Daplie/dig.js.git"
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},
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"keywords": [
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"dig",
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"dns",
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"mdns",
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"lint",
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"capture",
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"create",
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"bin",
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"binary",
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"json"
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],
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"author": "AJ ONeal <coolaj86@gmail.com> (https://coolaj86.com/)",
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"license": "(MIT OR Apache-2.0)"
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}
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