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1070 lines
29 KiB
1070 lines
29 KiB
var fs = require('fs'),
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tls = require('tls'),
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zlib = require('zlib'),
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Socket = require('net').Socket,
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EventEmitter = require('events').EventEmitter,
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inherits = require('util').inherits,
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inspect = require('util').inspect;
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var Parser = require('./parser');
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var XRegExp = require('xregexp').XRegExp;
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var REX_TIMEVAL = XRegExp.cache('^(?<year>\\d{4})(?<month>\\d{2})(?<date>\\d{2})(?<hour>\\d{2})(?<minute>\\d{2})(?<second>\\d+)(?:.\\d+)?$'),
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RE_PASV = /([\d]+),([\d]+),([\d]+),([\d]+),([-\d]+),([-\d]+)/,
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RE_EOL = /\r?\n/g,
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RE_WD = /"(.+)"(?: |$)/,
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RE_SYST = /^([^ ]+)(?: |$)/;
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var /*TYPE = {
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SYNTAX: 0,
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INFO: 1,
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SOCKETS: 2,
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AUTH: 3,
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UNSPEC: 4,
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FILESYS: 5
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},*/
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RETVAL = {
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PRELIM: 1,
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OK: 2,
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WAITING: 3,
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ERR_TEMP: 4,
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ERR_PERM: 5
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},
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/*ERRORS = {
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421: 'Service not available, closing control connection',
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425: 'Can\'t open data connection',
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426: 'Connection closed; transfer aborted',
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450: 'Requested file action not taken / File unavailable (e.g., file busy)',
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451: 'Requested action aborted: local error in processing',
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452: 'Requested action not taken / Insufficient storage space in system',
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500: 'Syntax error / Command unrecognized',
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501: 'Syntax error in parameters or arguments',
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502: 'Command not implemented',
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503: 'Bad sequence of commands',
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504: 'Command not implemented for that parameter',
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530: 'Not logged in',
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532: 'Need account for storing files',
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550: 'Requested action not taken / File unavailable (e.g., file not found, no access)',
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551: 'Requested action aborted: page type unknown',
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552: 'Requested file action aborted / Exceeded storage allocation (for current directory or dataset)',
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553: 'Requested action not taken / File name not allowed'
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},*/
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bytesNOOP = new Buffer('NOOP\r\n');
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var FTP = module.exports = function() {
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if (!(this instanceof FTP))
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return new FTP();
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this._socket = undefined;
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this._pasvSock = undefined;
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this._feat = undefined;
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this._curReq = undefined;
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this._queue = [];
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this._secstate = undefined;
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this._debug = undefined;
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this._keepalive = undefined;
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this._ending = false;
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this._parser = undefined;
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this.options = {
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host: undefined,
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port: undefined,
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user: undefined,
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password: undefined,
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secure: false,
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secureOptions: undefined,
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connTimeout: undefined,
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pasvTimeout: undefined,
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aliveTimeout: undefined
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};
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this.connected = false;
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};
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inherits(FTP, EventEmitter);
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FTP.prototype.connect = function(options) {
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var self = this;
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if (typeof options !== 'object')
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options = {};
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this.connected = false;
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this.options.host = options.host || 'localhost';
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this.options.port = options.port || 21;
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this.options.user = options.user || 'anonymous';
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this.options.password = options.password || 'anonymous@';
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this.options.secure = options.secure || false;
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this.options.secureOptions = options.secureOptions;
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this.options.connTimeout = options.connTimeout || 10000;
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this.options.pasvTimeout = options.pasvTimeout || 10000;
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this.options.aliveTimeout = options.keepalive || 10000;
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if (typeof options.debug === 'function')
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this._debug = options.debug;
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var secureOptions,
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debug = this._debug,
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socket = new Socket();
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socket.setTimeout(0);
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socket.setKeepAlive(true);
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this._parser = new Parser({ debug: debug });
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this._parser.on('response', function(code, text) {
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var retval = code / 100 >> 0;
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if (retval === RETVAL.ERR_TEMP || retval === RETVAL.ERR_PERM) {
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if (self._curReq)
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self._curReq.cb(makeError(code, text), undefined, code);
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else
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self.emit('error', makeError(code, text));
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} else if (self._curReq)
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self._curReq.cb(undefined, text, code);
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// a hack to signal we're waiting for a PASV data connection to complete
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// first before executing any more queued requests ...
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//
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// also: don't forget our current request if we're expecting another
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// terminating response ....
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if (self._curReq && retval !== RETVAL.PRELIM) {
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self._curReq = undefined;
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self._send();
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}
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noopreq.cb();
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});
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if (this.options.secure) {
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secureOptions = {};
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secureOptions.host = this.options.host;
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for (var k in this.options.secureOptions)
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secureOptions[k] = this.options.secureOptions[k];
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secureOptions.socket = socket;
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this.options.secureOptions = secureOptions;
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}
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if (this.options.secure === 'implicit')
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this._socket = tls.connect(secureOptions, onconnect);
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else {
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socket.once('connect', onconnect);
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this._socket = socket;
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}
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var noopreq = {
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cmd: 'NOOP',
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cb: function() {
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clearTimeout(self._keepalive);
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self._keepalive = setTimeout(donoop, self.options.aliveTimeout);
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}
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};
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function donoop() {
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if (!self._socket || !self._socket.writable)
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clearTimeout(self._keepalive);
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else if (!self._curReq && self._queue.length === 0) {
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self._curReq = noopreq;
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debug&&debug('[connection] > NOOP');
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self._socket.write(bytesNOOP);
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} else
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noopreq.cb();
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}
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function onconnect() {
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clearTimeout(timer);
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clearTimeout(self._keepalive);
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self.connected = true;
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self._socket = socket; // re-assign for implicit secure connections
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var cmd;
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if (self._secstate) {
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if (self._secstate === 'upgraded-tls' && self.options.secure === true) {
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cmd = 'PBSZ';
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self._send('PBSZ 0', reentry, true);
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} else {
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cmd = 'USER';
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self._send('USER ' + self.options.user, reentry, true);
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}
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} else {
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self._curReq = {
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cmd: '',
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cb: reentry
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};
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}
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function reentry(err, text, code) {
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if (err && (!cmd || cmd === 'USER' || cmd === 'PASS' || cmd === 'TYPE')) {
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self.emit('error', err);
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return self._socket && self._socket.end();
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}
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if ((cmd === 'AUTH TLS' && code !== 234 && self.options.secure !== true)
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|| (cmd === 'AUTH SSL' && code !== 334)
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|| (cmd === 'PBSZ' && code !== 200)
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|| (cmd === 'PROT' && code !== 200)) {
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self.emit('error', makeError(code, 'Unable to secure connection(s)'));
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return self._socket && self._socket.end();
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}
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if (!cmd) {
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// sometimes the initial greeting can contain useful information
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// about authorized use, other limits, etc.
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self.emit('greeting', text);
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if (self.options.secure && self.options.secure !== 'implicit') {
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cmd = 'AUTH TLS';
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self._send(cmd, reentry, true);
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} else {
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cmd = 'USER';
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self._send('USER ' + self.options.user, reentry, true);
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}
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} else if (cmd === 'USER') {
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if (code !== 230) {
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// password required
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if (!self.options.password) {
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self.emit('error', makeError(code, 'Password required'));
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return self._socket && self._socket.end();
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}
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cmd = 'PASS';
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self._send('PASS ' + self.options.password, reentry, true);
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} else {
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// no password required
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cmd = 'PASS';
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reentry(undefined, text, code);
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}
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} else if (cmd === 'PASS') {
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cmd = 'FEAT';
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self._send(cmd, reentry, true);
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} else if (cmd === 'FEAT') {
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if (!err)
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self._feat = Parser.parseFeat(text);
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cmd = 'TYPE';
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self._send('TYPE I', reentry, true);
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} else if (cmd === 'TYPE')
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self.emit('ready');
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else if (cmd === 'PBSZ') {
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cmd = 'PROT';
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self._send('PROT P', reentry, true);
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} else if (cmd === 'PROT') {
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cmd = 'USER';
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self._send('USER ' + self.options.user, reentry, true);
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} else if (cmd.substr(0, 4) === 'AUTH') {
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if (cmd === 'AUTH TLS' && code !== 234) {
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cmd = 'AUTH SSL';
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return self._send(cmd, reentry, true);
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} else if (cmd === 'AUTH TLS')
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self._secstate = 'upgraded-tls';
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else if (cmd === 'AUTH SSL')
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self._secstate = 'upgraded-ssl';
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socket.removeAllListeners('data');
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socket.removeAllListeners('error');
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socket._decoder = null;
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self._curReq = null; // prevent queue from being processed during
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// TLS/SSL negotiation
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secureOptions.socket = self._socket;
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secureOptions.session = undefined;
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socket = tls.connect(secureOptions, onconnect);
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socket.setEncoding('binary');
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socket.on('data', ondata);
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socket.once('end', onend);
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socket.on('error', onerror);
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}
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}
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}
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socket.on('data', ondata);
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function ondata(chunk) {
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debug&&debug('[connection] < ' + inspect(chunk.toString('binary')));
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if (self._parser)
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self._parser.write(chunk);
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}
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socket.on('error', onerror);
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function onerror(err) {
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clearTimeout(timer);
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clearTimeout(self._keepalive);
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self.emit('error', err);
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}
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socket.once('end', onend);
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function onend() {
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ondone();
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self.emit('end');
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}
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socket.once('close', function(had_err) {
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ondone();
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self.emit('close', had_err);
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});
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var hasReset = false;
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function ondone() {
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if (!hasReset) {
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hasReset = true;
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clearTimeout(timer);
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self._reset();
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}
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}
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var timer = setTimeout(function() {
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self.emit('error', new Error('Timeout while connecting to server'));
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self._socket && self._socket.destroy();
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self._reset();
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}, this.options.connTimeout);
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this._socket.connect(this.options.port, this.options.host);
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};
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FTP.prototype.end = function() {
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if (this._queue.length)
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this._ending = true;
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else
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this._reset();
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};
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FTP.prototype.destroy = function() {
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this._reset();
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};
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// "Standard" (RFC 959) commands
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FTP.prototype.ascii = function(cb) {
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return this._send('TYPE A', cb);
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};
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FTP.prototype.binary = function(cb) {
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return this._send('TYPE I', cb);
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};
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FTP.prototype.abort = function(immediate, cb) {
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if (typeof immediate === 'function') {
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cb = immediate;
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immediate = true;
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}
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if (immediate)
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this._send('ABOR', cb, true);
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else
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this._send('ABOR', cb);
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};
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FTP.prototype.cwd = function(path, cb, promote) {
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this._send('CWD ' + path, function(err, text, code) {
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if (err)
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return cb(err);
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var m = RE_WD.exec(text);
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cb(undefined, m ? m[1] : undefined);
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}, promote);
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};
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FTP.prototype.delete = function(path, cb) {
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this._send('DELE ' + path, cb);
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};
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FTP.prototype.site = function(cmd, cb) {
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this._send('SITE ' + cmd, cb);
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};
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FTP.prototype.status = function(cb) {
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this._send('STAT', cb);
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};
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FTP.prototype.rename = function(from, to, cb) {
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var self = this;
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this._send('RNFR ' + from, function(err) {
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if (err)
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return cb(err);
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self._send('RNTO ' + to, cb, true);
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});
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};
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FTP.prototype.logout = function(cb) {
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this._send('QUIT', cb);
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};
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FTP.prototype.listSafe = function(path, zcomp, cb) {
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if (typeof path === 'string') {
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var self = this;
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// store current path
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this.pwd(function(err, origpath) {
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if (err) return cb(err);
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// change to destination path
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self.cwd(path, function(err) {
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if (err) return cb(err);
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// get dir listing
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self.list(zcomp || false, function(err, list) {
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// change back to original path
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if (err) return self.cwd(origpath, cb);
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self.cwd(origpath, function(err) {
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if (err) return cb(err);
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cb(err, list);
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});
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});
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});
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});
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} else
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this.list(path, zcomp, cb);
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};
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FTP.prototype.list = function(path, zcomp, cb) {
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var self = this, cmd;
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if (typeof path === 'function') {
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// list(function() {})
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cb = path;
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path = undefined;
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cmd = 'LIST';
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zcomp = false;
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} else if (typeof path === 'boolean') {
|
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// list(true, function() {})
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cb = zcomp;
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zcomp = path;
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path = undefined;
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cmd = 'LIST';
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} else if (typeof zcomp === 'function') {
|
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// list('/foo', function() {})
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cb = zcomp;
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cmd = 'LIST ' + path;
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zcomp = false;
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} else
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cmd = 'LIST ' + path;
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|
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this._pasv(function(err, sock) {
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if (err)
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return cb(err);
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if (self._queue[0] && self._queue[0].cmd === 'ABOR') {
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sock.destroy();
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return cb();
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}
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|
|
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var sockerr, done = false, replies = 0, entries, buffer = '', source = sock;
|
|
|
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if (zcomp) {
|
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source = zlib.createInflate();
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sock.pipe(source);
|
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}
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|
|
|
source.on('data', function(chunk) { buffer += chunk.toString('binary'); });
|
|
source.once('error', function(err) {
|
|
if (!sock.aborting)
|
|
sockerr = err;
|
|
});
|
|
source.once('end', ondone);
|
|
source.once('close', ondone);
|
|
|
|
function ondone() {
|
|
done = true;
|
|
final();
|
|
}
|
|
function final() {
|
|
if (done && replies === 2) {
|
|
replies = 3;
|
|
if (sockerr)
|
|
return cb(new Error('Unexpected data connection error: ' + sockerr));
|
|
if (sock.aborting)
|
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return cb();
|
|
|
|
// process received data
|
|
entries = buffer.split(RE_EOL);
|
|
entries.pop(); // ending EOL
|
|
var parsed = [];
|
|
for (var i = 0, len = entries.length; i < len; ++i) {
|
|
var parsedVal = Parser.parseListEntry(entries[i]);
|
|
if (parsedVal !== null)
|
|
parsed.push(parsedVal);
|
|
}
|
|
|
|
if (zcomp) {
|
|
self._send('MODE S', function() {
|
|
cb(undefined, parsed);
|
|
}, true);
|
|
} else
|
|
cb(undefined, parsed);
|
|
}
|
|
}
|
|
|
|
if (zcomp) {
|
|
self._send('MODE Z', function(err, text, code) {
|
|
if (err) {
|
|
sock.destroy();
|
|
return cb(makeError(code, 'Compression not supported'));
|
|
}
|
|
sendList();
|
|
}, true);
|
|
} else
|
|
sendList();
|
|
|
|
function sendList() {
|
|
// this callback will be executed multiple times, the first is when server
|
|
// replies with 150 and then a final reply to indicate whether the
|
|
// transfer was actually a success or not
|
|
self._send(cmd, function(err, text, code) {
|
|
if (err) {
|
|
sock.destroy();
|
|
if (zcomp) {
|
|
self._send('MODE S', function() {
|
|
cb(err);
|
|
}, true);
|
|
} else
|
|
cb(err);
|
|
return;
|
|
}
|
|
|
|
// some servers may not open a data connection for empty directories
|
|
if (++replies === 1 && code === 226) {
|
|
replies = 2;
|
|
sock.destroy();
|
|
final();
|
|
} else if (replies === 2)
|
|
final();
|
|
}, true);
|
|
}
|
|
});
|
|
};
|
|
|
|
FTP.prototype.get = function(path, zcomp, cb) {
|
|
var self = this;
|
|
if (typeof zcomp === 'function') {
|
|
cb = zcomp;
|
|
zcomp = false;
|
|
}
|
|
|
|
this._pasv(function(err, sock) {
|
|
if (err)
|
|
return cb(err);
|
|
|
|
if (self._queue[0] && self._queue[0].cmd === 'ABOR') {
|
|
sock.destroy();
|
|
return cb();
|
|
}
|
|
|
|
// modify behavior of socket events so that we can emit 'error' once for
|
|
// either a TCP-level error OR an FTP-level error response that we get when
|
|
// the socket is closed (e.g. the server ran out of space).
|
|
var sockerr, started = false, lastreply = false, done = false,
|
|
source = sock;
|
|
|
|
if (zcomp) {
|
|
source = zlib.createInflate();
|
|
sock.pipe(source);
|
|
sock._emit = sock.emit;
|
|
sock.emit = function(ev, arg1) {
|
|
if (ev === 'error') {
|
|
if (!sockerr)
|
|
sockerr = arg1;
|
|
return;
|
|
}
|
|
sock._emit.apply(sock, Array.prototype.slice.call(arguments));
|
|
};
|
|
}
|
|
|
|
source._emit = source.emit;
|
|
source.emit = function(ev, arg1) {
|
|
if (ev === 'error') {
|
|
if (!sockerr)
|
|
sockerr = arg1;
|
|
return;
|
|
} else if (ev === 'end' || ev === 'close') {
|
|
if (!done) {
|
|
done = true;
|
|
ondone();
|
|
}
|
|
return;
|
|
}
|
|
source._emit.apply(source, Array.prototype.slice.call(arguments));
|
|
};
|
|
|
|
function ondone() {
|
|
if (done && lastreply) {
|
|
self._send('MODE S', function() {
|
|
source._emit('end');
|
|
source._emit('close');
|
|
}, true);
|
|
}
|
|
}
|
|
|
|
sock.pause();
|
|
|
|
if (zcomp) {
|
|
self._send('MODE Z', function(err, text, code) {
|
|
if (err) {
|
|
sock.destroy();
|
|
return cb(makeError(code, 'Compression not supported'));
|
|
}
|
|
sendRetr();
|
|
}, true);
|
|
} else
|
|
sendRetr();
|
|
|
|
function sendRetr() {
|
|
// this callback will be executed multiple times, the first is when server
|
|
// replies with 150, then a final reply after the data connection closes
|
|
// to indicate whether the transfer was actually a success or not
|
|
self._send('RETR ' + path, function(err, text, code) {
|
|
if (sockerr || err) {
|
|
sock.destroy();
|
|
if (!started) {
|
|
if (zcomp) {
|
|
self._send('MODE S', function() {
|
|
cb(sockerr || err);
|
|
}, true);
|
|
} else
|
|
cb(sockerr || err);
|
|
} else {
|
|
source._emit('error', sockerr || err);
|
|
source._emit('close', true);
|
|
}
|
|
return;
|
|
}
|
|
// server returns 125 when data connection is already open; we treat it
|
|
// just like a 150
|
|
if (code === 150 || code === 125) {
|
|
started = true;
|
|
cb(undefined, source);
|
|
sock.resume();
|
|
} else {
|
|
lastreply = true;
|
|
ondone();
|
|
}
|
|
}, true);
|
|
}
|
|
});
|
|
};
|
|
|
|
FTP.prototype.put = function(input, path, zcomp, cb) {
|
|
this._store('STOR ' + path, input, zcomp, cb);
|
|
};
|
|
|
|
FTP.prototype.append = function(input, path, zcomp, cb) {
|
|
this._store('APPE ' + path, input, zcomp, cb);
|
|
};
|
|
|
|
FTP.prototype.pwd = function(cb) { // PWD is optional
|
|
var self = this;
|
|
this._send('PWD', function(err, text, code) {
|
|
if (code === 502) {
|
|
return self.cwd('.', function(cwderr, cwd) {
|
|
if (cwderr)
|
|
return cb(cwderr);
|
|
if (cwd === undefined)
|
|
cb(err);
|
|
else
|
|
cb(undefined, cwd);
|
|
}, true);
|
|
} else if (err)
|
|
return cb(err);
|
|
cb(undefined, RE_WD.exec(text)[1]);
|
|
});
|
|
};
|
|
|
|
FTP.prototype.cdup = function(cb) { // CDUP is optional
|
|
var self = this;
|
|
this._send('CDUP', function(err, text, code) {
|
|
if (code === 502)
|
|
self.cwd('..', cb, true);
|
|
else
|
|
cb(err);
|
|
});
|
|
};
|
|
|
|
FTP.prototype.mkdir = function(path, recursive, cb) { // MKD is optional
|
|
if (typeof recursive === 'function') {
|
|
cb = recursive;
|
|
recursive = false;
|
|
}
|
|
if (!recursive)
|
|
this._send('MKD ' + path, cb);
|
|
else {
|
|
var self = this, owd, abs, dirs, dirslen, i = -1, searching = true;
|
|
|
|
abs = (path[0] === '/');
|
|
|
|
var nextDir = function() {
|
|
if (++i === dirslen) {
|
|
// return to original working directory
|
|
return self._send('CWD ' + owd, cb, true);
|
|
}
|
|
if (searching) {
|
|
self._send('CWD ' + dirs[i], function(err, text, code) {
|
|
if (code === 550) {
|
|
searching = false;
|
|
--i;
|
|
} else if (err) {
|
|
// return to original working directory
|
|
return self._send('CWD ' + owd, function() {
|
|
cb(err);
|
|
}, true);
|
|
}
|
|
nextDir();
|
|
}, true);
|
|
} else {
|
|
self._send('MKD ' + dirs[i], function(err, text, code) {
|
|
if (err) {
|
|
// return to original working directory
|
|
return self._send('CWD ' + owd, function() {
|
|
cb(err);
|
|
}, true);
|
|
}
|
|
self._send('CWD ' + dirs[i], nextDir, true);
|
|
}, true);
|
|
}
|
|
};
|
|
this.pwd(function(err, cwd) {
|
|
if (err)
|
|
return cb(err);
|
|
owd = cwd;
|
|
if (abs)
|
|
path = path.substr(1);
|
|
if (path[path.length - 1] === '/')
|
|
path = path.substring(0, path.length - 1);
|
|
dirs = path.split('/');
|
|
dirslen = dirs.length;
|
|
if (abs)
|
|
self._send('CWD /', function(err) {
|
|
if (err)
|
|
return cb(err);
|
|
nextDir();
|
|
}, true);
|
|
else
|
|
nextDir();
|
|
});
|
|
}
|
|
};
|
|
|
|
FTP.prototype.rmdir = function(path, recursive, cb) { // RMD is optional
|
|
if (typeof recursive === 'function') {
|
|
cb = recursive;
|
|
recursive = false;
|
|
}
|
|
if (!recursive) {
|
|
return this._send('RMD ' + path, cb);
|
|
}
|
|
|
|
var self = this;
|
|
this.list(path, function(err, list) {
|
|
if (err) return cb(err);
|
|
var idx = 0;
|
|
|
|
// this function will be called once per listing entry
|
|
var deleteNextEntry;
|
|
deleteNextEntry = function(err) {
|
|
if (err) return cb(err);
|
|
if (idx >= list.length) {
|
|
if (list[0] && list[0].name === path) {
|
|
return cb(null);
|
|
} else {
|
|
return self.rmdir(path, cb);
|
|
}
|
|
}
|
|
|
|
var entry = list[idx++];
|
|
|
|
// get the path to the file
|
|
var subpath = null;
|
|
if (entry.name[0] === '/') {
|
|
// this will be the case when you call deleteRecursively() and pass
|
|
// the path to a plain file
|
|
subpath = entry.name;
|
|
} else {
|
|
if (path[path.length - 1] == '/') {
|
|
subpath = path + entry.name;
|
|
} else {
|
|
subpath = path + '/' + entry.name
|
|
}
|
|
}
|
|
|
|
// delete the entry (recursively) according to its type
|
|
if (entry.type === 'd') {
|
|
if (entry.name === "." || entry.name === "..") {
|
|
return deleteNextEntry();
|
|
}
|
|
self.rmdir(subpath, true, deleteNextEntry);
|
|
} else {
|
|
self.delete(subpath, deleteNextEntry);
|
|
}
|
|
}
|
|
deleteNextEntry();
|
|
});
|
|
};
|
|
|
|
FTP.prototype.system = function(cb) { // SYST is optional
|
|
this._send('SYST', function(err, text) {
|
|
if (err)
|
|
return cb(err);
|
|
cb(undefined, RE_SYST.exec(text)[1]);
|
|
});
|
|
};
|
|
|
|
// "Extended" (RFC 3659) commands
|
|
FTP.prototype.size = function(path, cb) {
|
|
var self = this;
|
|
this._send('SIZE ' + path, function(err, text, code) {
|
|
if (code === 502) {
|
|
// Note: this may cause a problem as list() is _appended_ to the queue
|
|
return self.list(path, function(err, list) {
|
|
if (err)
|
|
return cb(err);
|
|
if (list.length === 1)
|
|
cb(undefined, list[0].size);
|
|
else {
|
|
// path could have been a directory and we got a listing of its
|
|
// contents, but here we echo the behavior of the real SIZE and
|
|
// return 'File not found' for directories
|
|
cb(new Error('File not found'));
|
|
}
|
|
}, true);
|
|
} else if (err)
|
|
return cb(err);
|
|
cb(undefined, parseInt(text, 10));
|
|
});
|
|
};
|
|
|
|
FTP.prototype.lastMod = function(path, cb) {
|
|
var self = this;
|
|
this._send('MDTM ' + path, function(err, text, code) {
|
|
if (code === 502) {
|
|
return self.list(path, function(err, list) {
|
|
if (err)
|
|
return cb(err);
|
|
if (list.length === 1)
|
|
cb(undefined, list[0].date);
|
|
else
|
|
cb(new Error('File not found'));
|
|
}, true);
|
|
} else if (err)
|
|
return cb(err);
|
|
var val = XRegExp.exec(text, REX_TIMEVAL), ret;
|
|
if (!val)
|
|
return cb(new Error('Invalid date/time format from server'));
|
|
ret = new Date(val.year + '-' + val.month + '-' + val.date + 'T' + val.hour
|
|
+ ':' + val.minute + ':' + val.second);
|
|
cb(undefined, ret);
|
|
});
|
|
};
|
|
|
|
FTP.prototype.restart = function(offset, cb) {
|
|
this._send('REST ' + offset, cb);
|
|
};
|
|
|
|
|
|
|
|
// Private/Internal methods
|
|
FTP.prototype._pasv = function(cb) {
|
|
var self = this, first = true, ip, port;
|
|
this._send('PASV', function reentry(err, text) {
|
|
if (err)
|
|
return cb(err);
|
|
|
|
self._curReq = undefined;
|
|
|
|
if (first) {
|
|
var m = RE_PASV.exec(text);
|
|
if (!m)
|
|
return cb(new Error('Unable to parse PASV server response'));
|
|
ip = m[1];
|
|
ip += '.';
|
|
ip += m[2];
|
|
ip += '.';
|
|
ip += m[3];
|
|
ip += '.';
|
|
ip += m[4];
|
|
port = (parseInt(m[5], 10) * 256) + parseInt(m[6], 10);
|
|
|
|
first = false;
|
|
}
|
|
self._pasvConnect(ip, port, function(err, sock) {
|
|
if (err) {
|
|
// try the IP of the control connection if the server was somehow
|
|
// misconfigured and gave for example a LAN IP instead of WAN IP over
|
|
// the Internet
|
|
if (self._socket && ip !== self._socket.remoteAddress) {
|
|
ip = self._socket.remoteAddress;
|
|
return reentry();
|
|
}
|
|
|
|
// automatically abort PASV mode
|
|
self._send('ABOR', function() {
|
|
cb(err);
|
|
self._send();
|
|
}, true);
|
|
|
|
return;
|
|
}
|
|
cb(undefined, sock);
|
|
self._send();
|
|
});
|
|
});
|
|
};
|
|
|
|
FTP.prototype._pasvConnect = function(ip, port, cb) {
|
|
var self = this,
|
|
socket = new Socket(),
|
|
sockerr,
|
|
timedOut = false,
|
|
timer = setTimeout(function() {
|
|
timedOut = true;
|
|
socket.destroy();
|
|
cb(new Error('Timed out while making data connection'));
|
|
}, this.options.pasvTimeout);
|
|
|
|
socket.setTimeout(0);
|
|
|
|
socket.once('connect', function() {
|
|
self._debug&&self._debug('[connection] PASV socket connected');
|
|
if (self.options.secure === true) {
|
|
self.options.secureOptions.socket = socket;
|
|
self.options.secureOptions.session = self._socket.getSession();
|
|
//socket.removeAllListeners('error');
|
|
socket = tls.connect(self.options.secureOptions);
|
|
//socket.once('error', onerror);
|
|
socket.setTimeout(0);
|
|
}
|
|
clearTimeout(timer);
|
|
self._pasvSocket = socket;
|
|
cb(undefined, socket);
|
|
});
|
|
socket.once('error', onerror);
|
|
function onerror(err) {
|
|
sockerr = err;
|
|
}
|
|
socket.once('end', function() {
|
|
clearTimeout(timer);
|
|
});
|
|
socket.once('close', function(had_err) {
|
|
clearTimeout(timer);
|
|
if (!self._pasvSocket && !timedOut) {
|
|
var errmsg = 'Unable to make data connection';
|
|
if (sockerr) {
|
|
errmsg += '( ' + sockerr + ')';
|
|
sockerr = undefined;
|
|
}
|
|
cb(new Error(errmsg));
|
|
}
|
|
self._pasvSocket = undefined;
|
|
});
|
|
|
|
socket.connect(port, ip);
|
|
};
|
|
|
|
FTP.prototype._store = function(cmd, input, zcomp, cb) {
|
|
var isBuffer = Buffer.isBuffer(input);
|
|
|
|
if (!isBuffer && input.pause !== undefined)
|
|
input.pause();
|
|
|
|
if (typeof zcomp === 'function') {
|
|
cb = zcomp;
|
|
zcomp = false;
|
|
}
|
|
|
|
var self = this;
|
|
this._pasv(function(err, sock) {
|
|
if (err)
|
|
return cb(err);
|
|
|
|
if (self._queue[0] && self._queue[0].cmd === 'ABOR') {
|
|
sock.destroy();
|
|
return cb();
|
|
}
|
|
|
|
var sockerr, dest = sock;
|
|
sock.once('error', function(err) {
|
|
sockerr = err;
|
|
});
|
|
|
|
if (zcomp) {
|
|
self._send('MODE Z', function(err, text, code) {
|
|
if (err) {
|
|
sock.destroy();
|
|
return cb(makeError(code, 'Compression not supported'));
|
|
}
|
|
// draft-preston-ftpext-deflate-04 says min of 8 should be supported
|
|
dest = zlib.createDeflate({ level: 8 });
|
|
dest.pipe(sock);
|
|
sendStore();
|
|
}, true);
|
|
} else
|
|
sendStore();
|
|
|
|
function sendStore() {
|
|
// this callback will be executed multiple times, the first is when server
|
|
// replies with 150, then a final reply after the data connection closes
|
|
// to indicate whether the transfer was actually a success or not
|
|
self._send(cmd, function(err, text, code) {
|
|
if (sockerr || err) {
|
|
if (zcomp) {
|
|
self._send('MODE S', function() {
|
|
cb(sockerr || err);
|
|
}, true);
|
|
} else
|
|
cb(sockerr || err);
|
|
return;
|
|
}
|
|
|
|
if (code === 150 || code === 125) {
|
|
if (isBuffer)
|
|
dest.end(input);
|
|
else if (typeof input === 'string') {
|
|
// check if input is a file path or just string data to store
|
|
fs.stat(input, function(err, stats) {
|
|
if (err)
|
|
dest.end(input);
|
|
else
|
|
fs.createReadStream(input).pipe(dest);
|
|
});
|
|
} else {
|
|
input.pipe(dest);
|
|
input.resume();
|
|
}
|
|
} else {
|
|
if (zcomp)
|
|
self._send('MODE S', cb, true);
|
|
else
|
|
cb();
|
|
}
|
|
}, true);
|
|
}
|
|
});
|
|
};
|
|
|
|
FTP.prototype._send = function(cmd, cb, promote) {
|
|
clearTimeout(this._keepalive);
|
|
if (cmd !== undefined) {
|
|
if (promote)
|
|
this._queue.unshift({ cmd: cmd, cb: cb });
|
|
else
|
|
this._queue.push({ cmd: cmd, cb: cb });
|
|
}
|
|
var queueLen = this._queue.length;
|
|
if (!this._curReq && queueLen && this._socket && this._socket.readable) {
|
|
this._curReq = this._queue.shift();
|
|
if (this._curReq.cmd === 'ABOR' && this._pasvSocket)
|
|
this._pasvSocket.aborting = true;
|
|
this._debug&&this._debug('[connection] > ' + inspect(this._curReq.cmd));
|
|
this._socket.write(this._curReq.cmd + '\r\n');
|
|
} else if (!this._curReq && !queueLen && this._ending)
|
|
this._reset();
|
|
};
|
|
|
|
FTP.prototype._reset = function() {
|
|
if (this._pasvSock && this._pasvSock.writable)
|
|
this._pasvSock.end();
|
|
if (this._socket && this._socket.writable)
|
|
this._socket.end();
|
|
this._socket = undefined;
|
|
this._pasvSock = undefined;
|
|
this._feat = undefined;
|
|
this._curReq = undefined;
|
|
this._secstate = undefined;
|
|
clearTimeout(this._keepalive);
|
|
this._keepalive = undefined;
|
|
this._queue = [];
|
|
this._ending = false;
|
|
this._parser = undefined;
|
|
this.options.host = this.options.port = this.options.user
|
|
= this.options.password = this.options.secure
|
|
= this.options.connTimeout = this.options.pasvTimeout
|
|
= this.options.keepalive = this._debug = undefined;
|
|
this.connected = false;
|
|
};
|
|
|
|
// Utility functions
|
|
function makeError(code, text) {
|
|
var err = new Error(text);
|
|
err.code = code;
|
|
return err;
|
|
}
|
|
|