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2025-11-02 22:52:08 +01:00
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'use strict';
// module to handle cookies
var urllib = require('url');
var SESSION_TIMEOUT = 1800; // 30 min
module.exports = Cookies;
/**
* Creates a biskviit cookie jar for managing cookie values in memory
*
* @constructor
* @param {Object} [options] Optional options object
*/
function Cookies(options) {
this.options = options || {};
this.cookies = [];
}
/**
* Stores a cookie string to the cookie storage
*
* @param {String} cookieStr Value from the 'Set-Cookie:' header
* @param {String} url Current URL
*/
Cookies.prototype.set = function (cookieStr, url) {
var urlparts = urllib.parse(url || '');
var cookie = this.parse(cookieStr);
var domain;
if (cookie.domain) {
domain = cookie.domain.replace(/^\./, '');
// do not allow cross origin cookies
if (
// can't be valid if the requested domain is shorter than current hostname
urlparts.hostname.length < domain.length ||
// prefix domains with dot to be sure that partial matches are not used
('.' + urlparts.hostname).substr(-domain.length + 1) !== ('.' + domain)) {
cookie.domain = urlparts.hostname;
}
} else {
cookie.domain = urlparts.hostname;
}
if (!cookie.path) {
cookie.path = this.getPath(urlparts.pathname);
}
// if no expire date, then use sessionTimeout value
if (!cookie.expires) {
cookie.expires = new Date(Date.now() + (Number(this.options.sessionTimeout || SESSION_TIMEOUT) || SESSION_TIMEOUT) * 1000);
}
return this.add(cookie);
};
/**
* Returns cookie string for the 'Cookie:' header.
*
* @param {String} url URL to check for
* @returns {String} Cookie header or empty string if no matches were found
*/
Cookies.prototype.get = function (url) {
return this.list(url).map(function (cookie) {
return cookie.name + '=' + cookie.value;
}).join('; ');
};
/**
* Lists all valied cookie objects for the specified URL
*
* @param {String} url URL to check for
* @returns {Array} An array of cookie objects
*/
Cookies.prototype.list = function (url) {
var result = [];
var i;
var cookie;
for (i = this.cookies.length - 1; i >= 0; i--) {
cookie = this.cookies[i];
if (this.isExpired(cookie)) {
this.cookies.splice(i, i);
continue;
}
if (this.match(cookie, url)) {
result.unshift(cookie);
}
}
return result;
};
/**
* Parses cookie string from the 'Set-Cookie:' header
*
* @param {String} cookieStr String from the 'Set-Cookie:' header
* @returns {Object} Cookie object
*/
Cookies.prototype.parse = function (cookieStr) {
var cookie = {};
(cookieStr || '').toString().split(';').forEach(function (cookiePart) {
var valueParts = cookiePart.split('=');
var key = valueParts.shift().trim().toLowerCase();
var value = valueParts.join('=').trim();
var domain;
if (!key) {
// skip empty parts
return;
}
switch (key) {
case 'expires':
value = new Date(value);
// ignore date if can not parse it
if (value.toString() !== 'Invalid Date') {
cookie.expires = value;
}
break;
case 'path':
cookie.path = value;
break;
case 'domain':
domain = value.toLowerCase();
if (domain.length && domain.charAt(0) !== '.') {
domain = '.' + domain; // ensure preceeding dot for user set domains
}
cookie.domain = domain;
break;
case 'max-age':
cookie.expires = new Date(Date.now() + (Number(value) || 0) * 1000);
break;
case 'secure':
cookie.secure = true;
break;
case 'httponly':
cookie.httponly = true;
break;
default:
if (!cookie.name) {
cookie.name = key;
cookie.value = value;
}
}
});
return cookie;
};
/**
* Checks if a cookie object is valid for a specified URL
*
* @param {Object} cookie Cookie object
* @param {String} url URL to check for
* @returns {Boolean} true if cookie is valid for specifiec URL
*/
Cookies.prototype.match = function (cookie, url) {
var urlparts = urllib.parse(url || '');
// check if hostname matches
// .foo.com also matches subdomains, foo.com does not
if (urlparts.hostname !== cookie.domain && (cookie.domain.charAt(0) !== '.' || ('.' + urlparts.hostname).substr(-cookie.domain.length) !== cookie.domain)) {
return false;
}
// check if path matches
var path = this.getPath(urlparts.pathname);
if (path.substr(0, cookie.path.length) !== cookie.path) {
return false;
}
// check secure argument
if (cookie.secure && urlparts.protocol !== 'https:') {
return false;
}
return true;
};
/**
* Adds (or updates/removes if needed) a cookie object to the cookie storage
*
* @param {Object} cookie Cookie value to be stored
*/
Cookies.prototype.add = function (cookie) {
var i;
var len;
// nothing to do here
if (!cookie || !cookie.name) {
return false;
}
// overwrite if has same params
for (i = 0, len = this.cookies.length; i < len; i++) {
if (this.compare(this.cookies[i], cookie)) {
// check if the cookie needs to be removed instead
if (this.isExpired(cookie)) {
this.cookies.splice(i, 1); // remove expired/unset cookie
return false;
}
this.cookies[i] = cookie;
return true;
}
}
// add as new if not already expired
if (!this.isExpired(cookie)) {
this.cookies.push(cookie);
}
return true;
};
/**
* Checks if two cookie objects are the same
*
* @param {Object} a Cookie to check against
* @param {Object} b Cookie to check against
* @returns {Boolean} True, if the cookies are the same
*/
Cookies.prototype.compare = function (a, b) {
return a.name === b.name && a.path === b.path && a.domain === b.domain && a.secure === b.secure && a.httponly === a.httponly;
};
/**
* Checks if a cookie is expired
*
* @param {Object} cookie Cookie object to check against
* @returns {Boolean} True, if the cookie is expired
*/
Cookies.prototype.isExpired = function (cookie) {
return (cookie.expires && cookie.expires < new Date()) || !cookie.value;
};
/**
* Returns normalized cookie path for an URL path argument
*
* @param {String} pathname
* @returns {String} Normalized path
*/
Cookies.prototype.getPath = function (pathname) {
var path = (pathname || '/').split('/');
path.pop(); // remove filename part
path = path.join('/').trim();
// ensure path prefix /
if (path.charAt(0) !== '/') {
path = '/' + path;
}
// ensure path suffix /
if (path.substr(-1) !== '/') {
path += '/';
}
return path;
};

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'use strict';
var http = require('http');
var https = require('https');
var urllib = require('url');
var zlib = require('zlib');
var PassThrough = require('stream').PassThrough;
var Cookies = require('./cookies');
var MAX_REDIRECTS = 5;
module.exports = function (url, options) {
return fetch(url, options);
};
module.exports.Cookies = Cookies;
function fetch(url, options) {
options = options || {};
options.fetchRes = options.fetchRes || new PassThrough();
options.cookies = options.cookies || new Cookies();
options.redirects = options.redirects || 0;
options.maxRedirects = isNaN(options.maxRedirects) ? MAX_REDIRECTS : options.maxRedirects;
if (options.cookie) {
[].concat(options.cookie || []).forEach(function (cookie) {
options.cookies.set(cookie, url);
});
options.cookie = false;
}
var fetchRes = options.fetchRes;
var parsed = urllib.parse(url);
var method = (options.method || '').toString().trim().toUpperCase() || 'GET';
var finished = false;
var cookies;
var body;
var handler = parsed.protocol === 'https:' ? https : http;
var headers = {
'accept-encoding': 'gzip,deflate'
};
Object.keys(options.headers || {}).forEach(function (key) {
headers[key.toLowerCase().trim()] = options.headers[key];
});
if (options.userAgent) {
headers['User-Agent'] = options.userAgent;
}
if (parsed.auth) {
headers.Authorization = 'Basic ' + new Buffer(parsed.auth).toString('base64');
}
if ((cookies = options.cookies.get(url))) {
headers.cookie = cookies;
}
if (options.body) {
if (options.contentType !== false) {
headers['Content-Type'] = options.contentType || 'application/x-www-form-urlencoded';
}
if (typeof options.body.pipe === 'function') {
// it's a stream
headers['Transfer-Encoding'] = 'chunked';
body = options.body;
body.on('error', function (err) {
if (finished) {
return;
}
finished = true;
fetchRes.emit('error', err);
});
} else {
if (options.body instanceof Buffer) {
body = options.body;
} else if (typeof options.body === 'object') {
body = new Buffer(Object.keys(options.body).map(function (key) {
var value = options.body[key].toString().trim();
return encodeURIComponent(key) + '=' + encodeURIComponent(value);
}).join('&'));
} else {
body = new Buffer(options.body.toString().trim());
}
headers['Content-Type'] = options.contentType || 'application/x-www-form-urlencoded';
headers['Content-Length'] = body.length;
}
// if method is not provided, use POST instead of GET
method = (options.method || '').toString().trim().toUpperCase() || 'POST';
}
var req;
var reqOptions = {
method: method,
host: parsed.hostname,
path: parsed.path,
port: parsed.port ? parsed.port : (parsed.protocol === 'https:' ? 443 : 80),
headers: headers,
rejectUnauthorized: false,
agent: false
};
if (options.tls) {
Object.keys(options.tls).forEach(function (key) {
reqOptions[key] = options.tls[key];
});
}
try {
req = handler.request(reqOptions);
} catch (E) {
finished = true;
setImmediate(function () {
fetchRes.emit('error', E);
});
return fetchRes;
}
if (options.timeout) {
req.setTimeout(options.timeout, function () {
if (finished) {
return;
}
finished = true;
req.abort();
fetchRes.emit('error', new Error('Request Tiemout'));
});
}
req.on('error', function (err) {
if (finished) {
return;
}
finished = true;
fetchRes.emit('error', err);
});
req.on('response', function (res) {
var inflate;
if (finished) {
return;
}
switch (res.headers['content-encoding']) {
case 'gzip':
case 'deflate':
inflate = zlib.createUnzip();
break;
}
if (res.headers['set-cookie']) {
[].concat(res.headers['set-cookie'] || []).forEach(function (cookie) {
options.cookies.set(cookie, url);
});
}
if ([301, 302, 303, 307, 308].indexOf(res.statusCode) >= 0 && res.headers.location) {
// redirect
options.redirects++;
if (options.redirects > options.maxRedirects) {
finished = true;
fetchRes.emit('error', new Error('Maximum redirect count exceeded'));
req.abort();
return;
}
return fetch(urllib.resolve(url, res.headers.location), options);
}
if (res.statusCode >= 300) {
finished = true;
fetchRes.emit('error', new Error('Invalid status code ' + res.statusCode));
req.abort();
return;
}
res.on('error', function (err) {
if (finished) {
return;
}
finished = true;
fetchRes.emit('error', err);
req.abort();
});
if (inflate) {
res.pipe(inflate).pipe(fetchRes);
inflate.on('error', function (err) {
if (finished) {
return;
}
finished = true;
fetchRes.emit('error', err);
req.abort();
});
} else {
res.pipe(fetchRes);
}
});
setImmediate(function () {
if (body) {
try {
if (typeof body.pipe === 'function') {
return body.pipe(req);
} else {
req.write(body);
}
} catch (err) {
finished = true;
fetchRes.emit('error', err);
return;
}
}
req.end();
});
return fetchRes;
}