* Some WIP FTN packet processing
This commit is contained in:
Bryan Ashby
parent
f51b6c7098
commit
5e55ce4bee
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@ -123,5 +123,19 @@ function getDefaultConfig() {
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dsaPrivateKey : paths.join(__dirname, './../misc/default_key.dsa'),
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}
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},
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networks : {
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/*
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networkName : { // e.g. fidoNet
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address : {
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zone : 0,
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net : 0,
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node : 0,
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point : 0,
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domain : 'l33t.codes'
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}
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}
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*/
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},
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};
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}
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@ -1,84 +0,0 @@
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/* jslint node: true */
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'use strict';
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var Config = require('./config.js').config;
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var _ = require('lodash');
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var assert = require('assert');
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var binary = require('binary');
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function getFTNAddress = function() {
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return 'TODO';
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}
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function getFTNMessageSerialNumber(messageId) {
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return ((Math.floor((Date.now() - Date.UTC(2015, 01, 01)) / 1000) + messageId)).toString(16);
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}
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function getFTNMessageID(messageId, areaId) {
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return messageId + '.' + areaId + '@' + getFTNAddress() + ' ' + getFTNMessageSerialNumber(messageId)
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}
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function getFTNOriginLine = function() {
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//
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// Specs:
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// http://ftsc.org/docs/fts-0004.001
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//
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return ' * Origin: ' + Config.general.boardName + '(' + getFidoNetAddress() + ')';
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}
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//
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// References
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// https://github.com/M-griffin/PyPacketMail/blob/master/PyPacketMail.py
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//
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function extractMessageFromFTNPacketBuffer(options, cb) {
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// options.networkAddress
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// options.packetBuffer
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assert(_.isBuffer(options.packetBuffer));
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// :TODO: check size
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// :TODO: big/little endian?
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binary.parse(options.packetBuffer)
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.word16('origNode')
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.word16('destNode')
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.word16('year')
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.word16('month')
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.word16('day')
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.word16('hour')
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.word16('minute')
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.word16('second')
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.word16('baud')
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.word16('packetType')
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.word16('originNet')
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.word16('destNet')
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.word8('prodCodeLo')
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.word8('revisionMajor') // aka serialNo
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.buffer('password', 8)
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.word16('origZone')
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.word16('destZone')
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// where is the rest of the spec?
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.word16('auxNet')
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.word16('capWordA')
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.word8('prodCodeHi')
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.word8('revisionMinor')
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.word16('capWordB')
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.word16('originZone2')
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.word16('destZone2')
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.word16('originPoint')
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.word16('destPoint')
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.word32u('prodData')
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.tap(function tapped(vars) {
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}
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);
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}
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function extractMessagesFromFTNPacketFile(options) {
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//
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// options.path
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// options.networkAddress
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//
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}
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@ -0,0 +1,190 @@
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/* jslint node: true */
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'use strict';
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var Config = require('./config.js').config;
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var ftn = require('./ftn_util.js');
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var _ = require('lodash');
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var assert = require('assert');
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var binary = require('binary');
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var fs = require('fs');
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var util = require('util');
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var async = require('async');
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//
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// References
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// https://github.com/M-griffin/PyPacketMail/blob/master/PyPacketMail.py
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//
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function FTNMailPacket(options) {
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//
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// Map of networkName -> { zone, net, node, point, ... }
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//
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//
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// :TODO: ...
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// options.nodeAddresses
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var self = this;
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this.nodeAddresses = options.nodeAddresses || {};
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/*
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this.loadNodeAddresses = function() {
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if(Config.networks) {
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for(var name in Config.networks) {
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if(!Config.networks[name].address) {
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continue;
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}
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this.nodeAddresses[name] = Config.networks[name].address;
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}
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}
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};
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this.loadNodeAddresses();
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*/
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this.getPacketHeaderAddress = function() {
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return {
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zone : self.packetHeader.destZone,
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net : self.packetHeader.destNet,
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node : self.packetHeader.destNode,
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point : self.packetHeader.destPoint,
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};
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};
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this.getNetworkForAddress = function(addr) {
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var nodeAddr;
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for(var network in self.nodeAddresses) {
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nodeAddr = self.nodeAddresses[network];
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if(nodeAddr.zone === addr.zone &&
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nodeAddr.net === addr.net &&
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nodeAddr.node === addr.node &&
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nodeAddr.point === addr.point)
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{
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return network;
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}
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}
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};
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this.loadPacketHeader = function(packetBuffer, cb) {
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assert(Buffer.isBuffer(packetBuffer));
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if(packetBuffer.length < 58) {
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cb(new Error('Buffer too small'));
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return;
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}
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binary.parse(packetBuffer)
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.word16lu('origNode')
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.word16lu('destNode')
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.word16lu('year')
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.word16lu('month')
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.word16lu('day')
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.word16lu('hour')
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.word16lu('minute')
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.word16lu('second')
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.word16lu('baud')
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.word16lu('packetType')
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.word16lu('originNet')
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.word16lu('destNet')
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.word8('prodCodeLo')
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.word8('revisionMajor') // aka serialNo
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.buffer('password', 8) // null terminated C style string
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.word16lu('origZone')
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.word16lu('destZone')
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// where is the rest of the spec?
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.word16lu('auxNet')
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.word16lu('capWordA')
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.word8('prodCodeHi')
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.word8('revisionMinor')
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.word16lu('capWordB')
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.word16lu('originZone2')
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.word16lu('destZone2')
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.word16lu('originPoint')
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.word16lu('destPoint')
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.word32lu('prodData')
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.tap(function tapped(packetHeader) {
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packetHeader.password = ftn.stringFromFTN(packetHeader.password);
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cb(null, packetHeader);
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});
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};
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this.loadMessagesFromPacketBuffer = function(packetBuffer, cb) {
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async.series(
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[
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function loadHdr(callback) {
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self.loadPacketHeader(packetBuffer, function headerLoaded(err, packetHeader) {
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self.packetHeader = packetHeader;
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callback(err);
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});
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},
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function validateType(callback) {
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// :TODO: don't use a magic # here....
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if(2 !== self.packetHeader.packetType) {
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callback(new Error('Packet is not Type-2'));
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} else {
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callback(null);
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}
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},
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function checkAddress(callback) {
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/*
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if(0 !== self.packetHeader.destPoint) {
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self.packetNodeAddress = ftn.getFormattedFTNAddress(self.getPacketHeaderAddress(), '4D');
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} else {
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self.packetNodeAddress = ftn.getFormattedFTNAddress(self.getPacketHeaderAddress(), '3D');
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}*/
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var network = self.getNetworkForAddress(self.getPacketHeaderAddress());
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callback(network ? null : new Error('Packet not addressed do this system'));
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}
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],
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function complete(err) {
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cb(err);
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}
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);
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};
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}
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FTNMailPacket.prototype.parse = function(path, cb) {
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var self = this;
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async.waterfall(
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[
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function readFromFile(callback) {
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fs.readFile(path, function packetData(err, data) {
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callback(err, data);
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});
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},
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function extractMessages(data, callback) {
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self.loadMessagesFromPacketBuffer(data, function extracted(err, messages) {
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callback(err, messages);
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});
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}
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],
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function complete(err, messages) {
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cb(err, messages);
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}
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);
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};
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var mailPacket = new FTNMailPacket(
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{
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nodeAddresses : {
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fidoNet : {
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zone : 46,
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net : 1,
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node : 140,
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point : 0,
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domain : ''
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}
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}
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}
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);
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mailPacket.parse('/home/nuskooler/ownCloud/Projects/ENiGMA½ BBS/FTNPackets/27000425.pkt', function parsed(err, messages) {
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});
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@ -0,0 +1,84 @@
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/* jslint node: true */
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'use strict';
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var Config = require('./config.js').config;
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var _ = require('lodash');
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var assert = require('assert');
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var binary = require('binary');
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var fs = require('fs');
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var util = require('util');
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exports.stringFromFTN = stringFromFTN;
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exports.getFormattedFTNAddress = getFormattedFTNAddress;
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function stringFromFTN(buf, encoding) {
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var nullPos = buf.length;
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for(var i = 0; i < buf.length; ++i) {
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if(0x00 === buf[i]) {
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nullPos = i;
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break;
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}
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}
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return buf.slice(0, nullPos).toString(encoding || 'utf-8');
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}
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function getFormattedFTNAddress3D(zone, net, node) {
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return util.format('%d:%d/%d', zone, net, node);
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}
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function getFormattedFTNAddress4D(zone, net, node, point) {
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return util.format('%d:%d/%d.%d', zone, net, node, point);
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}
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function getFormattedFTNAddress5D(zone, net, node, point, domain) {
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// :TODO:
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}
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function getFormattedFTNAddress(address, dimensions) {
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var addr = util.format('%d:%d', address.zone, address.net);
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switch(dimensions) {
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case 2 :
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case '2D' :
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// above
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break;
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case 3 :
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case '3D' :
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addr += util.format('/%d', address.node);
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break;
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case 4 :
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case '4D':
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addr += util.format('.%d', address.point || 0); // missing and 0 are equiv for point
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break;
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case 5 :
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case '5D' :
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if(address.domain) {
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addr += util.format('@%s', address.domain);
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}
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break;
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}
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return addr;
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}
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function getFTNMessageSerialNumber(messageId) {
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return ((Math.floor((Date.now() - Date.UTC(2015, 1, 1)) / 1000) + messageId)).toString(16);
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}
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function getFTNMessageID(messageId, areaId) {
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return messageId + '.' + areaId + '@' + getFTNAddress() + ' ' + getFTNMessageSerialNumber(messageId)
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}
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function getFTNOriginLine() {
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//
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// Specs:
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// http://ftsc.org/docs/fts-0004.001
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//
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return ' * Origin: ' + Config.general.boardName + '(' + getFidoNetAddress() + ')';
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}
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