* Progress on parsing/extracting FTN packets
This commit is contained in:
Bryan Ashby
parent
5e55ce4bee
commit
8f33a9a067
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@ -53,7 +53,7 @@ function FTNMailPacket(options) {
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};
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};
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this.getNetworkForAddress = function(addr) {
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this.getNetworkNameForAddress = 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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@ -67,7 +67,7 @@ function FTNMailPacket(options) {
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}
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};
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this.loadPacketHeader = function(packetBuffer, cb) {
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this.parseFtnPacketHeader = function(packetBuffer, cb) {
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assert(Buffer.isBuffer(packetBuffer));
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if(packetBuffer.length < 58) {
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@ -93,7 +93,7 @@ function FTNMailPacket(options) {
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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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// :TODO: Document the various specs/fields more
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.word16lu('auxNet')
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.word16lu('capWordA')
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.word8('prodCodeHi')
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@ -107,37 +107,131 @@ function FTNMailPacket(options) {
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.tap(function tapped(packetHeader) {
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packetHeader.password = ftn.stringFromFTN(packetHeader.password);
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// :TODO: Don't hard code magic # here
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if(2 !== packetHeader.packetType) {
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cb(new Error('Packet is not Type-2'));
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return;
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}
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// :TODO: validate & pass error if failure
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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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this.parseFtnMessageBody = function(msgBodyBuffer, cb) {
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};
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this.parseFtnMessages = function(buffer, cb) {
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var nullTermBuf = new Buffer( [ 0 ] );
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var fidoMessages = [];
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binary.stream(buffer).loop(function looper(end, vars) {
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this
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.word16lu('messageType')
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.word16lu('originNode')
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.word16lu('destNode')
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.word16lu('originNet')
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.word16lu('destNet')
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.word8('attrFlags1')
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.word8('attrFlags2')
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.word16lu('cost')
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.scan('modDateTime', nullTermBuf)
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.scan('toUserName', nullTermBuf)
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.scan('fromUserName', nullTermBuf)
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.scan('subject', nullTermBuf)
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.scan('message', nullTermBuf)
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.tap(function tapped(msgData) {
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if(!msgData.originNode) {
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end();
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cb(null, fidoMessages);
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return;
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}
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// buffer to string conversion
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// :TODO: What is the real encoding here?
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[ 'modDateTime', 'toUserName', 'fromUserName', 'subject', ].forEach(function field(f) {
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msgData[f] = msgData[f].toString();
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});
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fidoMessages.push(_.clone(msgData));
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});
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});
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};
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/*
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this.loadMessageHeader = function(msgHeaderBuffer, cb) {
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assert(Buffer.isBuffer(msgHeaderBuffer));
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if(msgHeaderBuffer.length < 14) {
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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(msgHeaderBuffer)
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.word16lu('messageType')
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.word16lu('originNode')
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.word16lu('destNode')
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.word16lu('originNet')
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.word16lu('destNet')
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.word8('attrFlags1')
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.word8('attrFlags2')
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.word16lu('cost')
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.tap(function tapped(msgHeader) {
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console.log(msgHeader)
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var nullTermBuf = new Buffer( [ 0 ] );
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var offset = 14;
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binary.parse(msgHeaderBuffer.slice(offset))
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.scan('modDateTime', nullTermBuf)
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.scan('toUserName', nullTermBuf)
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.tap(function tapped(varMsgHeader) {
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console.log(varMsgHeader.modDateTime.toString())
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console.log(varMsgHeader.toUserName.toString())
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});
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cb(null, msgHeader);
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});
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};
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this.loadMessage = function(buf, cb) {
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var bufPosition = 0;
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async.waterfall(
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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.loadMessageHeader(buf.slice(bufPosition), function headerLoaded(err, msgHeader) {
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callback(err, msgHeader);
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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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this.loadMessagesFromPacketBuffer = function(packetBuffer, cb) {
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async.waterfall(
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[
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function parseHeader(callback) {
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self.parseFtnPacketHeader(packetBuffer, function headerParsed(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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function validateDesinationAddress(callback) {
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self.localNetworkName = self.getNetworkNameForAddress(self.getPacketHeaderAddress());
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callback(self.localNetworkName ? null : new Error('Packet not addressed do this system'));
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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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function parseMessages(callback) {
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self.parseFtnMessages(packetBuffer.slice(58), function messagesParsed(err, fidoMessages) {
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callback(err, fidoMessages);
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});
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},
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function createMessageObjects(fidoMessages, callback) {
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fidoMessages.forEach(function msg(fmsg) {
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console.log(fmsg.subject);
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});
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}
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],
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function complete(err) {
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@ -185,6 +279,6 @@ var mailPacket = new FTNMailPacket(
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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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mailPacket.parse('/home/bashby/ownCloud/Projects/ENiGMA½ BBS/FTNPackets/27000425.pkt', function parsed(err, messages) {
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});
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@ -13,6 +13,8 @@ var util = require('util');
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exports.stringFromFTN = stringFromFTN;
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exports.getFormattedFTNAddress = getFormattedFTNAddress;
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// See list here: https://github.com/Mithgol/node-fidonet-jam
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function stringFromFTN(buf, encoding) {
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var nullPos = buf.length;
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@ -67,7 +69,7 @@ function getFormattedFTNAddress(address, dimensions) {
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return addr;
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}
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function getFTNMessageSerialNumber(messageId) {
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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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@ -75,6 +77,21 @@ function getFTNMessageID(messageId, areaId) {
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return messageId + '.' + areaId + '@' + getFTNAddress() + ' ' + getFTNMessageSerialNumber(messageId)
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}
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//
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// Specs:
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// * http://ftsc.org/docs/fts-0009.001
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// *
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//
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function getFtnMsgIdKludgeLine(origAddress, messageId) {
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if(_.isObject(origAddress)) {
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origAddress = getFormattedFTNAddress(origAddress, '5D');
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}
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return '\x01MSGID: ' + origAddress + ' ' + 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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