coolaj86/dns-suite.js
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changed examples to use dns-suite instead of dns-js

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This commit is contained in:
tigerbot 2017-05-22 14:14:18 -06:00
parent 8fc78f35f0
commit 53cae83af4
6 changed files with 58 additions and 42 deletions
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9
dns.packer.js
View File

@ -37,6 +37,11 @@ var dnspack = exports.DNS_PACKER = {
if (!r.className) {
throw new Error("no className");
}
if (!classes[r.className]) {
console.warn("ignoring invalid class '" + r.className + "' for '" + r.name);
} else {
r.class = classes[r.className];
}
}
if (!r.type) {
@ -44,7 +49,9 @@ var dnspack = exports.DNS_PACKER = {
throw new Error("no typeName");
}
if (!types[r.typeName]) {
console.warn("ignoring invalid type '" + r.type + "' for '" + r.name + "', ignoring");
console.warn("ignoring invalid type '" + r.typeName + "' for '" + r.name);
} else {
r.type = types[r.typeName];
}
}
}

63
examples/cloud-respond.js
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@ -1,20 +1,44 @@
'use strict';
module.exports.respond = function (socket, packets, rinfo) {
var dns = require('dns-js');
var dns = require('../');
var os = require('os');
var queryname = '_cloud._tcp.local';
console.log(packets);
packets.forEach(function (packet) {
// Only respond to queries, otherwise we'll end up responding to ourselves forever.
if (packet.header.qr !== 0) {
return;
}
packet.question.forEach(function (q) {
if (queryname !== q.name) {
return;
}
console.log('question', q.name, q.typeName, q.className, q.flag, q);
var rpacket = new dns.DNSPacket();
var rpacket = {
header: {
id: packet.header.id
, qr: 1
, opcode: 0
, aa: 1
, tc: 0
, rd: 0
, ra: 0
, res1: 0
, res2: 0
, res3: 0
, rcode: 0
, }
, question: [q]
, answer: []
, authority: []
, additional: []
, edns_options: []
};
var ifaces = os.networkInterfaces();
//var llRe = /^(fe80|169)/i; // link-local
@ -29,9 +53,9 @@ module.exports.respond = function (socket, packets, rinfo) {
iface.forEach(function (pface) {
rpacket.additional.push({
name: q.name
, type: ('IPv4' === pface.family ? dns.DNSRecord.Type.A : dns.DNSRecord.Type.AAAA)
, typeName: ('IPv4' === pface.family ? 'A' : 'AAAA')
, ttl: 10
, class: dns.DNSRecord.Class.IN
, className: 'IN'
, address: pface.address // '_workstation._tcp.local'
});
});
@ -40,43 +64,33 @@ module.exports.respond = function (socket, packets, rinfo) {
var myRndId = 'be1af7a';
rpacket.answer.push({
name: q.name
, type: dns.DNSRecord.Type.PTR
, typeName: 'PTR'
, ttl: 10
, class: dns.DNSRecord.Class.IN
, className: 'IN'
, data: myRndId + '.' + queryname
});
rpacket.question.push(new dns.DNSRecord(
queryname // Name
, dns.DNSRecord.Type.PTR // Type
, dns.DNSRecord.Class.IN // Class
//, null // TTL
));
rpacket.additional.push({
name: myRndId + '.' + queryname
, type: dns.DNSRecord.Type.SRV
, typeName: 'SRV'
, ttl: 10
, class: dns.DNSRecord.Class.IN
, priority: 0
, className: 'IN'
, priority: 1
, weight: 0
, port: 443
, target: myRndId + ".local"
, target: myRndId + ".local"
});
rpacket.additional.push({
name: myRndId + '.' + '_device-info._tcp.local'
, type: dns.DNSRecord.Type.TXT
, typeName: 'TXT'
, ttl: 10
, class: dns.DNSRecord.Class.IN
, className: 'IN'
, data: ["model=CloudHome1,1", "dappsvers=1"]
});
rpacket.header.id = packet.header.id;
rpacket.header.aa = 1;
rpacket.header.qr = 1;
rpacket.header.rd = 0;
console.log('');
console.log('START JSON PACKET');
console.log(rpacket);
var buf = dns.DNSPacket.toBuffer(rpacket);
var buf = dns.DNSPacket.write(rpacket);
console.log(buf.toString('hex'));
console.log('END JSON PACKET');
console.log('');
@ -89,8 +103,7 @@ module.exports.respond = function (socket, packets, rinfo) {
console.log('');
socket.send(buf, rinfo.port, rinfo.address);
});
/*
*/
packet.answer.forEach(function (a) {
console.log('answer', a.name, a.typeName, a.className, a.flag, a);
});

3
examples/dns_test.js
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@ -1,7 +1,6 @@
'use strict';
var dgram = require('dgram');
var dnsjs = require('dns-js');
// SO_REUSEADDR and SO_REUSEPORT are set because
// the system mDNS Responder may already be listening on this port
@ -22,4 +21,4 @@ socket.bind(port, function () {
socket.addMembership(broadcast);
// ... more stuff
});
});

11
examples/listen.js
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@ -5,7 +5,7 @@ var socket = dgram.createSocket({
type: 'udp4'
, reuseAddr: true
});
var dns = require('dns-js');
var dns = require('../');
//var DNSPacket = dns.DNSPacket;
var broadcast = '224.0.0.251'; // mdns
@ -31,17 +31,14 @@ return binString;
}
socket.on('message', function (message, rinfo) {
console.log('Received %d bytes from %s:%d\n',
message.length, rinfo.address, rinfo.port);
console.log('Received %d bytes from %s:%d', message.length, rinfo.address, rinfo.port);
//console.log(msg.toString('utf8'));
message.forEach(function(byte){
console.log(pad(byte.toString(2), 8,'0'));
console.log(pad(byte.toString(2), 8, '0'));
});
// console.log(message.toString('hex'));
// console.log(message.toString('ascii'));
var packets;

6
packer/type.srv.js
View File

@ -3,7 +3,7 @@
// SRV RDATA contains:
// Priority: The relative priority of this service. 16-bit (range 0-65535)
// Weight: Used when more than one serivice has the same priority. 16-bit
// Weight: Used when more than one serivice has the same priority. 16-bit
// (range 0-65535)
// Port: Port number assigned to the symbolic service. 16-bit (range 0-65535)
// Target: The name of the host that will provide service.
@ -31,7 +31,7 @@ exports.DNS_PACKER_TYPE_SRV = function (ab, dv, total, record) {
// console.log("record port is: " + record.port);
// console.log("record target is: " + record.target);
// console.log("total length currently is: " + total);
var srvLen = 6; // 16-bit priority, weight and port = 6 Bytes
var rdLenIndex = total;
@ -62,7 +62,7 @@ exports.DNS_PACKER_TYPE_SRV = function (ab, dv, total, record) {
// RDLENGTH
dv.setUint16(rdLenIndex, srvLen, false);
return total;
};

8
parser/type.soa.js
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@ -24,12 +24,12 @@ exports.DNS_PARSER_TYPE_SOA = function (ab, packet, record) {
// Primary NS
record.name_server = unpackLabels(new Uint8Array(ab), record.rdstart, { byteLength: 0, cpcount: 0, labels: [], name: '' }).name;
// if there exists compression pointers in the rdata
if (cpcount > 0){
// do something awesome with compression pointers to get the email address
// I need the length of all the data before the email address starts.
// if there are compression pointers then there will be a byte to indicate the length of each label, the label,
// if there are compression pointers then there will be a byte to indicate the length of each label, the label,
// then there will be a compression pointer to grab the longest label.
var start = 2; // start or email_addr. take into account compression pointer and address length
@ -41,7 +41,7 @@ exports.DNS_PARSER_TYPE_SOA = function (ab, packet, record) {
if(parseInt(dv.getUint8(start - 2), 10) === 192){
record.email_addr = unpackLabels(new Uint8Array(ab), record.rdstart + start ,{ byteLength: 0, cpcount: 0, labels: [], name: '' }).name;
}
}
}
} // if there are no compression pointers, we can get the email address directly from the offset
else {
@ -57,7 +57,7 @@ exports.DNS_PARSER_TYPE_SOA = function (ab, packet, record) {
record.ex = dv.getUint32(dv.byteLength - 8, false);
// Minimum TTL
record.nx = dv.getUint32(dv.byteLength - 4, false);
return record;