286 lines
9.7 KiB
JavaScript
286 lines
9.7 KiB
JavaScript
/* jslint node: true */
|
|
'use strict';
|
|
|
|
// ENiGMA½
|
|
const Address = require('./ftn_address.js');
|
|
const Errors = require('./enig_error.js').Errors;
|
|
const EnigAssert = require('./enigma_assert.js');
|
|
|
|
// deps
|
|
const fs = require('graceful-fs');
|
|
const CRC32 = require('./crc.js').CRC32;
|
|
const _ = require('lodash');
|
|
const async = require('async');
|
|
const paths = require('path');
|
|
const crypto = require('crypto');
|
|
|
|
//
|
|
// Class to read and hold information from a TIC file
|
|
//
|
|
// * FTS-5006.001 @ http://www.filegate.net/ftsc/FTS-5006.001
|
|
// * FSP-1039.001 @ http://ftsc.org/docs/old/fsp-1039.001
|
|
// * FSC-0087.001 @ http://ftsc.org/docs/fsc-0087.001
|
|
//
|
|
module.exports = class TicFileInfo {
|
|
constructor() {
|
|
this.entries = new Map();
|
|
}
|
|
|
|
static get requiredFields() {
|
|
return [
|
|
'Area', 'Origin', 'From', 'File', 'Crc',
|
|
// :TODO: validate this:
|
|
//'Path', 'Seenby' // these two are questionable; some systems don't send them?
|
|
];
|
|
}
|
|
|
|
get(key) {
|
|
return this.entries.get(key.toLowerCase());
|
|
}
|
|
|
|
getAsString(key, joinWith) {
|
|
const value = this.get(key);
|
|
if(value) {
|
|
//
|
|
// We call toString() on values to ensure numbers, addresses, etc. are converted
|
|
//
|
|
joinWith = joinWith || '';
|
|
if(Array.isArray(value)) {
|
|
return value.map(v => v.toString() ).join(joinWith);
|
|
}
|
|
|
|
return value.toString();
|
|
}
|
|
}
|
|
|
|
get filePath() {
|
|
return paths.join(paths.dirname(this.path), this.getAsString('File'));
|
|
}
|
|
|
|
get longFileName() {
|
|
return this.getAsString('Lfile') || this.getAsString('Fullname') || this.getAsString('File');
|
|
}
|
|
|
|
hasRequiredFields() {
|
|
const req = TicFileInfo.requiredFields;
|
|
return req.every( f => this.get(f) );
|
|
}
|
|
|
|
validate(config, cb) {
|
|
// config.nodes
|
|
// config.defaultPassword (optional)
|
|
// config.localAreaTags
|
|
EnigAssert(config.nodes && config.localAreaTags);
|
|
|
|
const self = this;
|
|
|
|
async.waterfall(
|
|
[
|
|
function initial(callback) {
|
|
if(!self.hasRequiredFields()) {
|
|
return callback(Errors.Invalid('One or more required fields missing from TIC'));
|
|
}
|
|
|
|
const area = self.getAsString('Area').toUpperCase();
|
|
|
|
const localInfo = {
|
|
areaTag : config.localAreaTags.find( areaTag => areaTag.toUpperCase() === area ),
|
|
};
|
|
|
|
if(!localInfo.areaTag) {
|
|
return callback(Errors.Invalid(`No local area for "Area" of ${area}`));
|
|
}
|
|
|
|
const from = Address.fromString(self.getAsString('From'));
|
|
if(!from.isValid()) {
|
|
return callback(Errors.Invalid(`Invalid "From" address: ${self.getAsString('From')}`));
|
|
}
|
|
|
|
// note that our config may have wildcards, such as "80:774/*"
|
|
localInfo.node = Object.keys(config.nodes).find( nodeAddrWildcard => from.isPatternMatch(nodeAddrWildcard) );
|
|
|
|
if(!localInfo.node) {
|
|
return callback(Errors.Invalid('TIC is not from a known node'));
|
|
}
|
|
|
|
// if we require a password, "PW" must match
|
|
const passActual = _.get(config.nodes, [ localInfo.node, 'tic', 'password' ] ) || config.defaultPassword;
|
|
if(!passActual) {
|
|
return callback(null, localInfo); // no pw validation
|
|
}
|
|
|
|
const passTic = self.getAsString('Pw');
|
|
if(passTic !== passActual) {
|
|
return callback(Errors.Invalid('Bad TIC password'));
|
|
}
|
|
|
|
return callback(null, localInfo);
|
|
},
|
|
function checksumAndSize(localInfo, callback) {
|
|
const crcTic = self.get('Crc');
|
|
const stream = fs.createReadStream(self.filePath);
|
|
const crc = new CRC32();
|
|
let sizeActual = 0;
|
|
|
|
let sha256Tic = self.getAsString('Sha256');
|
|
let sha256;
|
|
if(sha256Tic) {
|
|
sha256Tic = sha256Tic.toLowerCase();
|
|
sha256 = crypto.createHash('sha256');
|
|
}
|
|
|
|
stream.on('data', data => {
|
|
sizeActual += data.length;
|
|
|
|
// sha256 if possible, else crc32
|
|
if(sha256) {
|
|
sha256.update(data);
|
|
} else {
|
|
crc.update(data);
|
|
}
|
|
});
|
|
|
|
stream.on('end', () => {
|
|
// again, use sha256 if possible
|
|
if(sha256) {
|
|
const sha256Actual = sha256.digest('hex');
|
|
if(sha256Tic != sha256Actual) {
|
|
return callback(Errors.Invalid(`TIC "Sha256" of ${sha256Tic} does not match actual SHA-256 of ${sha256Actual}`));
|
|
}
|
|
|
|
localInfo.sha256 = sha256Actual;
|
|
} else {
|
|
const crcActual = crc.finalize();
|
|
if(crcActual !== crcTic) {
|
|
return callback(Errors.Invalid(`TIC "Crc" of ${crcTic} does not match actual CRC-32 of ${crcActual}`));
|
|
}
|
|
localInfo.crc32 = crcActual;
|
|
}
|
|
|
|
const sizeTic = self.get('Size');
|
|
if(_.isUndefined(sizeTic)) {
|
|
return callback(null, localInfo);
|
|
}
|
|
|
|
if(sizeTic !== sizeActual) {
|
|
return callback(Errors.Invalid(`TIC "Size" of ${sizeTic} does not match actual size of ${sizeActual}`));
|
|
}
|
|
|
|
return callback(null, localInfo);
|
|
});
|
|
|
|
stream.on('error', err => {
|
|
return callback(err);
|
|
});
|
|
}
|
|
],
|
|
(err, localInfo) => {
|
|
return cb(err, localInfo);
|
|
}
|
|
);
|
|
}
|
|
|
|
isToAddress(address, allowNonExplicit) {
|
|
//
|
|
// FSP-1039.001:
|
|
// "This keyword specifies the FTN address of the system where to
|
|
// send the file to be distributed and the accompanying TIC file.
|
|
// Some File processors (Allfix) only insert a line with this
|
|
// keyword when the file and the associated TIC file are to be
|
|
// file routed through a third sysem instead of being processed
|
|
// by a file processor on that system. Others always insert it.
|
|
// Note that the To keyword may cause problems when the TIC file
|
|
// is proecessed by software that does not recognise it and
|
|
// passes the line "as is" to other systems.
|
|
//
|
|
// Example: To 292/854
|
|
//
|
|
// This is an optional keyword."
|
|
//
|
|
const to = this.get('To');
|
|
|
|
if(!to) {
|
|
return allowNonExplicit;
|
|
}
|
|
|
|
return address.isEqual(to);
|
|
}
|
|
|
|
static createFromFile(path, cb) {
|
|
fs.readFile(path, 'utf8', (err, ticData) => {
|
|
if(err) {
|
|
return cb(err);
|
|
}
|
|
|
|
const ticFileInfo = new TicFileInfo();
|
|
ticFileInfo.path = path;
|
|
|
|
//
|
|
// Lines in a TIC file should be separated by CRLF (DOS)
|
|
// may be separated by LF (UNIX)
|
|
//
|
|
const lines = ticData.split(/\r\n|\n/g);
|
|
let keyEnd;
|
|
let key;
|
|
let value;
|
|
let entry;
|
|
|
|
lines.forEach(line => {
|
|
keyEnd = line.search(/\s/);
|
|
|
|
if(keyEnd < 0) {
|
|
keyEnd = line.length;
|
|
}
|
|
|
|
key = line.substr(0, keyEnd).toLowerCase();
|
|
|
|
if(0 === key.length) {
|
|
return;
|
|
}
|
|
|
|
value = line.substr(keyEnd + 1);
|
|
|
|
// don't trim Ldesc; may mess with FILE_ID.DIZ type descriptions
|
|
if('ldesc' !== key) {
|
|
value = value.trim();
|
|
}
|
|
|
|
// convert well known keys to a more reasonable format
|
|
switch(key) {
|
|
case 'origin' :
|
|
case 'from' :
|
|
case 'seenby' :
|
|
case 'to' :
|
|
value = Address.fromString(value);
|
|
break;
|
|
|
|
case 'crc' :
|
|
value = parseInt(value, 16);
|
|
break;
|
|
|
|
case 'size' :
|
|
value = parseInt(value, 10);
|
|
break;
|
|
|
|
default :
|
|
break;
|
|
}
|
|
|
|
entry = ticFileInfo.entries.get(key);
|
|
|
|
if(entry) {
|
|
if(!Array.isArray(entry)) {
|
|
entry = [ entry ];
|
|
ticFileInfo.entries.set(key, entry);
|
|
}
|
|
entry.push(value);
|
|
} else {
|
|
ticFileInfo.entries.set(key, value);
|
|
}
|
|
});
|
|
|
|
return cb(null, ticFileInfo);
|
|
});
|
|
}
|
|
};
|