Many updates to read/write of packets of diff versions
This commit is contained in:
Bryan Ashby
parent
dec78e942d
commit
7b5ab029f9
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@ -18,11 +18,10 @@ var moment = require('moment');
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/*
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:TODO: things
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* Read/detect packet types: 2, 2.2, and 2+
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* Write packet types: 2, 2.2, and 2+
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* Test SAUCE ignore/extraction
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* FSP-1010 for netmail (see SBBS)
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* Syncronet apparently uses odd origin lines
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* Origin lines starting with "#" instead of "*" ?
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*/
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@ -39,7 +38,7 @@ const FTN_MESSAGE_KLUDGE_PREFIX = '\x01';
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//
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// Read/Write FTN packets with support for the following formats:
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//
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// * Type 1 FTS-0001 @ http://ftsc.org/docs/fts-0001.016 (Obsolete)
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// * Type 2 FTS-0001 @ http://ftsc.org/docs/fts-0001.016 (Obsolete)
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// * Type 2.2 FSC-0045 @ http://ftsc.org/docs/fsc-0045.001
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// * Type 2+ FSC-0039 and FSC-0048 @ http://ftsc.org/docs/fsc-0039.004
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// and http://ftsc.org/docs/fsc-0048.002
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@ -81,15 +80,18 @@ function FTNPacket() {
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.buffer('password', 8) // null padded C style string
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.word16lu('origZone')
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.word16lu('destZone')
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// Additions in FSC-0048.002 follow...
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//
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// The following is "filler" in FTS-0001, specifics in
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// FSC-0045 and FSC-0048
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//
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.word16lu('auxNet')
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.word16lu('capWordA')
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.word16lu('capWordValidate')
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.word8('prodCodeHi')
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.word8('prodRevHi')
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.word16lu('capWordB')
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.word16lu('capWord')
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.word16lu('origZone2')
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.word16lu('destZone2')
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.word16lu('originPoint')
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.word16lu('origPoint')
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.word16lu('destPoint')
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.word32lu('prodData')
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.tap(packetHeader => {
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@ -104,24 +106,38 @@ function FTNPacket() {
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//
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// What kind of packet do we really have here?
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//
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// :TODO: adjust values based on version discoverd
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if(FTN_PACKET_BAUD_TYPE_2_2 === packetHeader.baud) {
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packetHeader.packetVersion = '2.2';
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// See FSC-0045
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packetHeader.origPoint = packetHeader.year;
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packetHeader.destPoint = packetHeader.month;
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packetHeader.destDomain = packetHeader.origZone2;
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packetHeader.origDomain = packetHeader.auxNet;
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} else {
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//
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// See heuristics described in FSC-0048, "Receiving Type-2+ bundles"
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//
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const capWordASwapped =
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((packetHeader.capWordA & 0xff) << 8) |
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((packetHeader.capWordA >> 8) & 0xff);
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const capWordValidateSwapped =
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((packetHeader.capWordValidate & 0xff) << 8) |
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((packetHeader.capWordValidate >> 8) & 0xff);
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if(capWordASwapped === packetHeader.capWordB &&
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0 != packetHeader.capWordB &&
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packetHeader.capWordB & 0x0001)
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if(capWordValidateSwapped === packetHeader.capWord &&
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0 != packetHeader.capWord &&
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packetHeader.capWord & 0x0001)
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{
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packetHeader.packetVersion = '2+';
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// See FSC-0048
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if(-1 === packetHeader.origNet) {
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packetHeader.origNet = packetHeader.auxNet;
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}
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} else {
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packetHeader.packetVersion = '2';
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packetHeader.point
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// :TODO: should fill bytes be 0?
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}
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}
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@ -135,41 +151,74 @@ function FTNPacket() {
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});
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};
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this.writePacketHeader = function(headerInfo, ws) {
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this.writePacketHeader = function(packetHeader, ws) {
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let buffer = new Buffer(FTN_PACKET_HEADER_SIZE);
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buffer.writeUInt16LE(headerInfo.origNode, 0);
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buffer.writeUInt16LE(headerInfo.destNode, 2);
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buffer.writeUInt16LE(headerInfo.created.year(), 4);
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buffer.writeUInt16LE(headerInfo.created.month(), 6);
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buffer.writeUInt16LE(headerInfo.created.date(), 8);
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buffer.writeUInt16LE(headerInfo.created.hour(), 10);
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buffer.writeUInt16LE(headerInfo.created.minute(), 12);
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buffer.writeUInt16LE(headerInfo.created.second(), 14);
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buffer.writeUInt16LE(headerInfo.baud, 16);
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buffer.writeUInt16LE(FTN_PACKET_HEADER_TYPE, 18);
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buffer.writeUInt16LE(headerInfo.origNet, 20);
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buffer.writeUInt16LE(headerInfo.destNet, 22);
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buffer.writeUInt8(headerInfo.prodCodeLo, 24);
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buffer.writeUInt8(headerInfo.prodRevHi, 25);
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// :TODO: write 2, 2.2, or 2+ packet based on packetHeader.packetVersion (def=2+)
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const pass = ftn.stringToNullPaddedBuffer(headerInfo.password, 8);
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buffer.writeUInt16LE(packetHeader.origNode, 0);
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buffer.writeUInt16LE(packetHeader.destNode, 2);
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buffer.writeUInt16LE(packetHeader.created.year(), 4);
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buffer.writeUInt16LE(packetHeader.created.month(), 6);
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buffer.writeUInt16LE(packetHeader.created.date(), 8);
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buffer.writeUInt16LE(packetHeader.created.hour(), 10);
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buffer.writeUInt16LE(packetHeader.created.minute(), 12);
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buffer.writeUInt16LE(packetHeader.created.second(), 14);
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buffer.writeUInt16LE(packetHeader.baud, 16);
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buffer.writeUInt16LE(FTN_PACKET_HEADER_TYPE, 18);
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buffer.writeUInt16LE(packetHeader.origNet, 20);
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buffer.writeUInt16LE(packetHeader.destNet, 22);
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buffer.writeUInt8(packetHeader.prodCodeLo, 24);
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buffer.writeUInt8(packetHeader.prodRevHi, 25);
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const pass = ftn.stringToNullPaddedBuffer(packetHeader.password, 8);
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pass.copy(buffer, 26);
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buffer.writeUInt16LE(headerInfo.origZone, 34);
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buffer.writeUInt16LE(headerInfo.destZone, 36);
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buffer.writeUInt16LE(packetHeader.origZone, 34);
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buffer.writeUInt16LE(packetHeader.destZone, 36);
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// FSC-0048.002 additions...
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buffer.writeUInt16LE(headerInfo.auxNet, 38);
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buffer.writeUInt16LE(headerInfo.capWordA, 40);
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buffer.writeUInt8(headerInfo.prodCodeHi, 42);
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buffer.writeUInt8(headerInfo.prodRevLo, 43);
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buffer.writeUInt16LE(headerInfo.capWordB, 44);
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buffer.writeUInt16LE(headerInfo.origZone2, 46);
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buffer.writeUInt16LE(headerInfo.destZone2, 48);
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buffer.writeUInt16LE(headerInfo.origPoint, 50);
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buffer.writeUInt16LE(headerInfo.destPoint, 52);
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buffer.writeUInt32LE(headerInfo.prodData, 54);
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switch(packetHeader.packetType) {
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case '2' :
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// filler...
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packetHeader.auxNet = 0;
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packetHeader.capWordValidate = 0;
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packetHeader.prodCodeHi = 0;
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packetHeader.prodRevLo = 0;
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packetHeader.capWord = 0;
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packetHeader.origZone2 = 0;
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packetHeader.destZone2 = 0;
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packetHeader.origPoint = 0;
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packetHeader.destPoint = 0;
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break;
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case '2.2' :
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packetHeader.day = 0;
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packetHeader.hour = 0;
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packetHeader.minute = 0;
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packetHeader.second = 0;
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break;
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case '2+' :
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break;
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}
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buffer.writeUInt16LE(packetHeader.auxNet, 38);
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buffer.writeUInt16LE(packetHeader.capWordValidate, 40);
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buffer.writeUInt8(packetHeader.prodCodeHi, 42);
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buffer.writeUInt8(packetHeader.prodRevLo, 43);
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buffer.writeUInt16LE(packetHeader.capWord, 44);
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buffer.writeUInt16LE(packetHeader.origZone2, 46);
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buffer.writeUInt16LE(packetHeader.destZone2, 48);
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buffer.writeUInt16LE(packetHeader.origPoint, 50);
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buffer.writeUInt16LE(packetHeader.destPoint, 52);
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// Store in "ENiG" in prodData unless we already have something useful
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if(0 === packetHeader.prodData) {
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packetHeader.prodData = 0x47694e45;
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}
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buffer.writeUInt32LE(packetHeader.prodData, 54);
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ws.write(buffer);
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};
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@ -293,6 +342,8 @@ function FTNPacket() {
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this.parsePacketMessages = function(messagesBuffer, iterator, cb) {
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const NULL_TERM_BUFFER = new Buffer( [ 0 ] );
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var count = 0;
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binary.stream(messagesBuffer).loop(function looper(end, vars) {
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//
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// Some variable names used here match up directly with well known
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@ -316,16 +367,18 @@ function FTNPacket() {
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if(!msgData.ftn_orig_node) {
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// end marker -- no more messages
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end();
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cb(null);
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return;
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}
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if(FTN_PACKET_MESSAGE_TYPE != msgData.messageType) {
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end();
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// :TODO: This is probably a bug if we hit a bad message after at leats one iterate
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cb(new Error('Unsupported message type: ' + msgData.messageType));
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return;
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}
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++count;
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//
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// Convert null terminated arrays to strings
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//
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@ -386,6 +439,11 @@ function FTNPacket() {
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}
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iterator('message', msg);
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--count;
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if(0 === count) {
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cb(null);
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}
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})
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});
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});
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@ -439,7 +497,7 @@ function FTNPacket() {
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a = [ a ];
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}
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a.forEach(v => {
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msgBody += `${k}: ${v}\n`;
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msgBody += `${k}: ${v}\r`;
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});
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}
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}
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@ -450,13 +508,13 @@ function FTNPacket() {
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// Should be first line in a message
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//
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if(message.meta.FtnProperty.ftn_area) {
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msgBody += `AREA:${message.meta.FtnProperty.ftn_area}\n`;
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msgBody += `AREA:${message.meta.FtnProperty.ftn_area}\r`; // note: no ^A (0x01)
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}
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Object.keys(message.meta.FtnKludge).forEach(k => {
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// we want PATH to be last
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if('PATH' !== k) {
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appendMeta(k, message.meta.FtnKludge[k]);
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appendMeta(`\x01${k}`, message.meta.FtnKludge[k]);
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}
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});
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@ -477,8 +535,8 @@ function FTNPacket() {
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// FTN-0004.001 @ http://ftsc.org/docs/fts-0004.001
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// SEEN-BY and PATH should be the last lines of a message
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//
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appendMeta('SEEN-BY', message.meta.FtnProperty.ftn_seen_by);
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appendMeta('PATH', message.meta.FtnKludge['PATH']);
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appendMeta('SEEN-BY', message.meta.FtnProperty.ftn_seen_by); // note: no ^A (0x01)
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appendMeta('\x01PATH', message.meta.FtnKludge['PATH']);
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ws.write(iconv.encode(msgBody + '\0', 'CP437'));
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};
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@ -501,7 +559,7 @@ function FTNPacket() {
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callback);
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}
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],
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cb
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cb // complete
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);
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};
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}
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@ -522,16 +580,21 @@ FTNPacket.prototype.read = function(pathOrBuffer, iterator, cb) {
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}
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},
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function parseBuffer(callback) {
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self.parsePacketBuffer(pathOrBuffer, iterator, callback);
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self.parsePacketBuffer(pathOrBuffer, iterator, err => {
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callback(err);
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});
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}
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],
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cb // completion callback
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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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FTNPacket.prototype.write = function(path, headerInfo, messages, cb) {
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headerInfo.created = headerInfo.created || moment();
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headerInfo.baud = headerInfo.baud || 0;
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FTNPacket.prototype.write = function(path, packetHeader, messages, cb) {
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packetHeader.packetType = packetHeader.packetType || '2+';
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packetHeader.created = packetHeader.created || moment();
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packetHeader.baud = packetHeader.baud || 0;
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// :TODO: Other defaults?
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if(!_.isArray(messages)) {
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@ -539,17 +602,20 @@ FTNPacket.prototype.write = function(path, headerInfo, messages, cb) {
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}
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let ws = fs.createWriteStream(path);
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this.writePacketHeader(headerInfo, ws);
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this.writePacketHeader(packetHeader, ws);
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messages.forEach(msg => {
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this.writeMessage(msg, ws);
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});
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ws.write(new Buffer( [ 0 ] )); // final extra null term
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};
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var ftnPacket = new FTNPacket();
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var theHeader;
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var written = false;
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let messagesToWrite = [];
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ftnPacket.read(
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process.argv[2],
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function iterator(dataType, data) {
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@ -560,6 +626,9 @@ ftnPacket.read(
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const msg = data;
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console.log(msg);
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messagesToWrite.push(msg);
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/*
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if(!written) {
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written = true;
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@ -568,7 +637,7 @@ ftnPacket.read(
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});
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}
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}*/
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let address = {
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zone : 46,
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@ -586,6 +655,12 @@ ftnPacket.read(
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}
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},
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function completion(err) {
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console.log('complete!')
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console.log(err);
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console.log(messagesToWrite.length)
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ftnPacket.write('/home/nuskooler/Downloads/ftnout/test1.pkt', theHeader, messagesToWrite, err => {
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});
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}
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);
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