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|
// Copyright 2010-2012 Mikeal Rogers
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
var http = require('http')
, https = false
, tls = false
, url = require('url')
, util = require('util')
, stream = require('stream')
, qs = require('querystring')
, mimetypes = require('./mimetypes')
, oauth = require('./oauth')
, uuid = require('./uuid')
, ForeverAgent = require('./forever')
, Cookie = require('./vendor/cookie')
, CookieJar = require('./vendor/cookie/jar')
, cookieJar = new CookieJar
, tunnel = require('./tunnel')
;
if (process.logging) {
var log = process.logging('request')
}
try {
https = require('https')
} catch (e) {}
try {
tls = require('tls')
} catch (e) {}
function toBase64 (str) {
return (new Buffer(str || "", "ascii")).toString("base64")
}
// Hacky fix for pre-0.4.4 https
if (https && !https.Agent) {
https.Agent = function (options) {
http.Agent.call(this, options)
}
util.inherits(https.Agent, http.Agent)
https.Agent.prototype._getConnection = function(host, port, cb) {
var s = tls.connect(port, host, this.options, function() {
// do other checks here?
if (cb) cb()
})
return s
}
}
function isReadStream (rs) {
if (rs.readable && rs.path && rs.mode) {
return true
}
}
function copy (obj) {
var o = {}
Object.keys(obj).forEach(function (i) {
o[i] = obj[i]
})
return o
}
var isUrl = /^https?:/
var globalPool = {}
function Request (options) {
stream.Stream.call(this)
this.readable = true
this.writable = true
if (typeof options === 'string') {
options = {uri:options}
}
var reserved = Object.keys(Request.prototype)
for (var i in options) {
if (reserved.indexOf(i) === -1) {
this[i] = options[i]
} else {
if (typeof options[i] === 'function') {
delete options[i]
}
}
}
options = copy(options)
this.init(options)
}
util.inherits(Request, stream.Stream)
Request.prototype.init = function (options) {
var self = this
if (!options) options = {}
if (!self.pool) self.pool = globalPool
self.dests = []
self.__isRequestRequest = true
// Protect against double callback
if (!self._callback && self.callback) {
self._callback = self.callback
self.callback = function () {
if (self._callbackCalled) return // Print a warning maybe?
self._callback.apply(self, arguments)
self._callbackCalled = true
}
}
if (self.url) {
// People use this property instead all the time so why not just support it.
self.uri = self.url
delete self.url
}
if (!self.uri) {
throw new Error("options.uri is a required argument")
} else {
if (typeof self.uri == "string") self.uri = url.parse(self.uri)
}
if (self.proxy) {
if (typeof self.proxy == 'string') self.proxy = url.parse(self.proxy)
// do the HTTP CONNECT dance using koichik/node-tunnel
if (http.globalAgent && self.uri.protocol === "https:") {
self.tunnel = true
var tunnelFn = self.proxy.protocol === "http:"
? tunnel.httpsOverHttp : tunnel.httpsOverHttps
var tunnelOptions = { proxy: { host: self.proxy.hostname
, port: +self.proxy.port }
, ca: this.ca }
self.agent = tunnelFn(tunnelOptions)
self.tunnel = true
}
}
self._redirectsFollowed = self._redirectsFollowed || 0
self.maxRedirects = (self.maxRedirects !== undefined) ? self.maxRedirects : 10
self.followRedirect = (self.followRedirect !== undefined) ? self.followRedirect : true
self.followAllRedirects = (self.followAllRedirects !== undefined) ? self.followAllRedirects : false;
if (self.followRedirect || self.followAllRedirects)
self.redirects = self.redirects || []
self.headers = self.headers ? copy(self.headers) : {}
self.setHost = false
if (!self.headers.host) {
self.headers.host = self.uri.hostname
if (self.uri.port) {
if ( !(self.uri.port === 80 && self.uri.protocol === 'http:') &&
!(self.uri.port === 443 && self.uri.protocol === 'https:') )
self.headers.host += (':'+self.uri.port)
}
self.setHost = true
}
self.jar(options.jar)
if (!self.uri.pathname) {self.uri.pathname = '/'}
if (!self.uri.port) {
if (self.uri.protocol == 'http:') {self.uri.port = 80}
else if (self.uri.protocol == 'https:') {self.uri.port = 443}
}
if (self.proxy && !self.tunnel) {
self.port = self.proxy.port
self.host = self.proxy.hostname
} else {
self.port = self.uri.port
self.host = self.uri.hostname
}
if (self.onResponse === true) {
self.onResponse = self.callback
delete self.callback
}
self.clientErrorHandler = function (error) {
if (self._aborted) return
if (self.setHost) delete self.headers.host
if (self.req._reusedSocket && error.code === 'ECONNRESET'
&& self.agent.addRequestNoreuse) {
self.agent = { addRequest: self.agent.addRequestNoreuse.bind(self.agent) }
self.start()
self.req.end()
return
}
if (self.timeout && self.timeoutTimer) {
clearTimeout(self.timeoutTimer);
self.timeoutTimer = null;
}
self.emit('error', error)
}
if (self.onResponse) self.on('error', function (e) {self.onResponse(e)})
if (self.callback) self.on('error', function (e) {self.callback(e)})
if (options.form) {
self.form(options.form)
}
if (options.oauth) {
self.oauth(options.oauth)
}
if (self.uri.auth && !self.headers.authorization) {
self.headers.authorization = "Basic " + toBase64(self.uri.auth.split(':').map(function(item){ return qs.unescape(item)}).join(':'))
}
if (self.proxy && self.proxy.auth && !self.headers['proxy-authorization'] && !self.tunnel) {
self.headers['proxy-authorization'] = "Basic " + toBase64(self.proxy.auth.split(':').map(function(item){ return qs.unescape(item)}).join(':'))
}
if (options.qs) self.qs(options.qs)
if (self.uri.path) {
self.path = self.uri.path
} else {
self.path = self.uri.pathname + (self.uri.search || "")
}
if (self.path.length === 0) self.path = '/'
if (self.proxy && !self.tunnel) self.path = (self.uri.protocol + '//' + self.uri.host + self.path)
if (options.json) {
self.json(options.json)
} else if (options.multipart) {
self.multipart(options.multipart)
}
if (self.body) {
var length = 0
if (!Buffer.isBuffer(self.body)) {
if (Array.isArray(self.body)) {
for (var i = 0; i < self.body.length; i++) {
length += self.body[i].length
}
} else {
self.body = new Buffer(self.body)
length = self.body.length
}
} else {
length = self.body.length
}
if (length) {
self.headers['content-length'] = length
} else {
throw new Error('Argument error, options.body.')
}
}
var protocol = self.proxy && !self.tunnel ? self.proxy.protocol : self.uri.protocol
, defaultModules = {'http:':http, 'https:':https}
, httpModules = self.httpModules || {}
;
self.httpModule = httpModules[protocol] || defaultModules[protocol]
if (!self.httpModule) throw new Error("Invalid protocol")
if (options.ca) self.ca = options.ca
if (!self.agent) {
if (options.agentOptions) self.agentOptions = options.agentOptions
if (options.agentClass) {
self.agentClass = options.agentClass
} else if (options.forever) {
self.agentClass = protocol === 'http:' ? ForeverAgent : ForeverAgent.SSL
} else {
self.agentClass = self.httpModule.Agent
}
}
if (self.pool === false) {
self.agent = false
} else {
self.agent = self.agent || self.getAgent()
if (self.maxSockets) {
// Don't use our pooling if node has the refactored client
self.agent.maxSockets = self.maxSockets
}
if (self.pool.maxSockets) {
// Don't use our pooling if node has the refactored client
self.agent.maxSockets = self.pool.maxSockets
}
}
self.once('pipe', function (src) {
if (self.ntick) throw new Error("You cannot pipe to this stream after the first nextTick() after creation of the request stream.")
self.src = src
if (isReadStream(src)) {
if (!self.headers['content-type'] && !self.headers['Content-Type'])
self.headers['content-type'] = mimetypes.lookup(src.path.slice(src.path.lastIndexOf('.')+1))
} else {
if (src.headers) {
for (var i in src.headers) {
if (!self.headers[i]) {
self.headers[i] = src.headers[i]
}
}
}
if (src.method && !self.method) {
self.method = src.method
}
}
self.on('pipe', function () {
console.error("You have already piped to this stream. Pipeing twice is likely to break the request.")
})
})
process.nextTick(function () {
if (self._aborted) return
if (self.body) {
if (Array.isArray(self.body)) {
self.body.forEach(function(part) {
self.write(part)
})
} else {
self.write(self.body)
}
self.end()
} else if (self.requestBodyStream) {
console.warn("options.requestBodyStream is deprecated, please pass the request object to stream.pipe.")
self.requestBodyStream.pipe(self)
} else if (!self.src) {
self.headers['content-length'] = 0
self.end()
}
self.ntick = true
})
}
Request.prototype.getAgent = function () {
var Agent = this.agentClass
var options = {}
if (this.agentOptions) {
for (var i in this.agentOptions) {
options[i] = this.agentOptions[i]
}
}
if (this.ca) options.ca = this.ca
var poolKey = ''
// different types of agents are in different pools
if (Agent !== this.httpModule.Agent) {
poolKey += Agent.name
}
if (!this.httpModule.globalAgent) {
// node 0.4.x
options.host = this.host
options.port = this.port
if (poolKey) poolKey += ':'
poolKey += this.host + ':' + this.port
}
if (options.ca) {
if (poolKey) poolKey += ':'
poolKey += options.ca
}
if (!poolKey && Agent === this.httpModule.Agent && this.httpModule.globalAgent) {
// not doing anything special. Use the globalAgent
return this.httpModule.globalAgent
}
// already generated an agent for this setting
if (this.pool[poolKey]) return this.pool[poolKey]
return this.pool[poolKey] = new Agent(options)
}
Request.prototype.start = function () {
var self = this
if (self._aborted) return
self._started = true
self.method = self.method || 'GET'
self.href = self.uri.href
if (log) log('%method %href', self)
self.req = self.httpModule.request(self, function (response) {
if (self._aborted) return
if (self._paused) response.pause()
self.response = response
response.request = self
if (self.httpModule === https &&
self.strictSSL &&
!response.client.authorized) {
var sslErr = response.client.authorizationError
self.emit('error', new Error('SSL Error: '+ sslErr))
return
}
if (self.setHost) delete self.headers.host
if (self.timeout && self.timeoutTimer) {
clearTimeout(self.timeoutTimer);
self.timeoutTimer = null;
}
if (response.headers['set-cookie'] && (!self._disableCookies)) {
response.headers['set-cookie'].forEach(function(cookie) {
if (self._jar) self._jar.add(new Cookie(cookie))
else cookieJar.add(new Cookie(cookie))
})
}
if (response.statusCode >= 300 && response.statusCode < 400 &&
(self.followAllRedirects ||
(self.followRedirect && (self.method !== 'PUT' && self.method !== 'POST' && self.method !== 'DELETE'))) &&
response.headers.location) {
if (self._redirectsFollowed >= self.maxRedirects) {
self.emit('error', new Error("Exceeded maxRedirects. Probably stuck in a redirect loop."))
return
}
self._redirectsFollowed += 1
if (!isUrl.test(response.headers.location)) {
response.headers.location = url.resolve(self.uri.href, response.headers.location)
}
self.uri = response.headers.location
self.redirects.push(
{ statusCode : response.statusCode
, redirectUri: response.headers.location
}
)
self.method = 'GET'; // Force all redirects to use GET
delete self.req
delete self.agent
delete self._started
if (self.headers) {
delete self.headers.host
}
if (log) log('Redirect to %uri', self)
self.init()
return // Ignore the rest of the response
} else {
self._redirectsFollowed = self._redirectsFollowed || 0
// Be a good stream and emit end when the response is finished.
// Hack to emit end on close because of a core bug that never fires end
response.on('close', function () {
if (!self._ended) self.response.emit('end')
})
if (self.encoding) {
if (self.dests.length !== 0) {
console.error("Ingoring encoding parameter as this stream is being piped to another stream which makes the encoding option invalid.")
} else {
response.setEncoding(self.encoding)
}
}
self.dests.forEach(function (dest) {
self.pipeDest(dest)
})
response.on("data", function (chunk) {
self._destdata = true
self.emit("data", chunk)
})
response.on("end", function (chunk) {
self._ended = true
self.emit("end", chunk)
})
response.on("close", function () {self.emit("close")})
self.emit('response', response)
if (self.onResponse) {
self.onResponse(null, response)
}
if (self.callback) {
var buffer = []
var bodyLen = 0
self.on("data", function (chunk) {
buffer.push(chunk)
bodyLen += chunk.length
})
self.on("end", function () {
if (self._aborted) return
if (buffer.length && Buffer.isBuffer(buffer[0])) {
var body = new Buffer(bodyLen)
var i = 0
buffer.forEach(function (chunk) {
chunk.copy(body, i, 0, chunk.length)
i += chunk.length
})
if (self.encoding === null) {
response.body = body
} else {
response.body = body.toString()
}
} else if (buffer.length) {
response.body = buffer.join('')
}
if (self._json) {
try {
response.body = JSON.parse(response.body)
} catch (e) {}
}
self.callback(null, response, response.body)
})
}
}
})
if (self.timeout && !self.timeoutTimer) {
self.timeoutTimer = setTimeout(function() {
self.req.abort()
var e = new Error("ETIMEDOUT")
e.code = "ETIMEDOUT"
self.emit("error", e)
}, self.timeout)
// Set additional timeout on socket - in case if remote
// server freeze after sending headers
if (self.req.setTimeout) { // only works on node 0.6+
self.req.setTimeout(self.timeout, function(){
if (self.req) {
self.req.abort()
var e = new Error("ESOCKETTIMEDOUT")
e.code = "ESOCKETTIMEDOUT"
self.emit("error", e)
}
})
}
}
self.req.on('error', self.clientErrorHandler)
self.emit('request', self.req)
}
Request.prototype.abort = function() {
this._aborted = true;
if (this.req) {
this.req.abort()
}
else if (this.response) {
this.response.abort()
}
this.emit("abort")
}
Request.prototype.pipeDest = function (dest) {
var response = this.response
// Called after the response is received
if (dest.headers) {
dest.headers['content-type'] = response.headers['content-type']
if (response.headers['content-length']) {
dest.headers['content-length'] = response.headers['content-length']
}
}
if (dest.setHeader) {
for (var i in response.headers) {
dest.setHeader(i, response.headers[i])
}
dest.statusCode = response.statusCode
}
if (this.pipefilter) this.pipefilter(response, dest)
}
// Composable API
Request.prototype.setHeader = function (name, value, clobber) {
if (clobber === undefined) clobber = true
if (clobber || !this.headers.hasOwnProperty(name)) this.headers[name] = value
else this.headers[name] += ',' + value
return this
}
Request.prototype.setHeaders = function (headers) {
for (i in headers) {this.setHeader(i, headers[i])}
return this
}
Request.prototype.qs = function (q, clobber) {
var uri = {
protocol: this.uri.protocol,
host: this.uri.host,
pathname: this.uri.pathname,
query: clobber ? q : qs.parse(this.uri.query),
hash: this.uri.hash
};
if (!clobber) for (var i in q) uri.query[i] = q[i]
this.uri= url.parse(url.format(uri))
return this
}
Request.prototype.form = function (form) {
this.headers['content-type'] = 'application/x-www-form-urlencoded; charset=utf-8'
this.body = qs.stringify(form).toString('utf8')
return this
}
Request.prototype.multipart = function (multipart) {
var self = this
self.body = []
if (!self.headers['content-type']) {
self.headers['content-type'] = 'multipart/related;boundary="frontier"';
} else {
self.headers['content-type'] = self.headers['content-type'].split(';')[0] + ';boundary="frontier"';
}
if (!multipart.forEach) throw new Error('Argument error, options.multipart.')
multipart.forEach(function (part) {
var body = part.body
if(!body) throw Error('Body attribute missing in multipart.')
delete part.body
var preamble = '--frontier\r\n'
Object.keys(part).forEach(function(key){
preamble += key + ': ' + part[key] + '\r\n'
})
preamble += '\r\n'
self.body.push(new Buffer(preamble))
self.body.push(new Buffer(body))
self.body.push(new Buffer('\r\n'))
})
self.body.push(new Buffer('--frontier--'))
return self
}
Request.prototype.json = function (val) {
this.setHeader('content-type', 'application/json')
this.setHeader('accept', 'application/json')
this._json = true
if (typeof val === 'boolean') {
if (typeof this.body === 'object') this.body = JSON.stringify(this.body)
} else {
this.body = JSON.stringify(val)
}
return this
}
Request.prototype.oauth = function (_oauth) {
var form
if (this.headers['content-type'] &&
this.headers['content-type'].slice(0, 'application/x-www-form-urlencoded'.length) ===
'application/x-www-form-urlencoded'
) {
form = qs.parse(this.body)
}
if (this.uri.query) {
form = qs.parse(this.uri.query)
}
if (!form) form = {}
var oa = {}
for (var i in form) oa[i] = form[i]
for (var i in _oauth) oa['oauth_'+i] = _oauth[i]
if (!oa.oauth_version) oa.oauth_version = '1.0'
if (!oa.oauth_timestamp) oa.oauth_timestamp = Math.floor( (new Date()).getTime() / 1000 ).toString()
if (!oa.oauth_nonce) oa.oauth_nonce = uuid().replace(/-/g, '')
oa.oauth_signature_method = 'HMAC-SHA1'
var consumer_secret = oa.oauth_consumer_secret
delete oa.oauth_consumer_secret
var token_secret = oa.oauth_token_secret
delete oa.oauth_token_secret
var baseurl = this.uri.protocol + '//' + this.uri.host + this.uri.pathname
var signature = oauth.hmacsign(this.method, baseurl, oa, consumer_secret, token_secret)
// oa.oauth_signature = signature
for (var i in form) {
if ( i.slice(0, 'oauth_') in _oauth) {
// skip
} else {
delete oa['oauth_'+i]
}
}
this.headers.authorization =
'OAuth '+Object.keys(oa).sort().map(function (i) {return i+'="'+oauth.rfc3986(oa[i])+'"'}).join(',')
this.headers.authorization += ',oauth_signature="'+oauth.rfc3986(signature)+'"'
return this
}
Request.prototype.jar = function (jar) {
var cookies
if (this._redirectsFollowed === 0) {
this.originalCookieHeader = this.headers.cookie
}
if (jar === false) {
// disable cookies
cookies = false;
this._disableCookies = true;
} else if (jar) {
// fetch cookie from the user defined cookie jar
cookies = jar.get({ url: this.uri.href })
} else {
// fetch cookie from the global cookie jar
cookies = cookieJar.get({ url: this.uri.href })
}
if (cookies && cookies.length) {
var cookieString = cookies.map(function (c) {
return c.name + "=" + c.value
}).join("; ")
if (this.originalCookieHeader) {
// Don't overwrite existing Cookie header
this.headers.cookie = this.originalCookieHeader + '; ' + cookieString
} else {
this.headers.cookie = cookieString
}
}
this._jar = jar
return this
}
// Stream API
Request.prototype.pipe = function (dest, opts) {
if (this.response) {
if (this._destdata) {
throw new Error("You cannot pipe after data has been emitted from the response.")
} else if (this._ended) {
throw new Error("You cannot pipe after the response has been ended.")
} else {
stream.Stream.prototype.pipe.call(this, dest, opts)
this.pipeDest(dest)
return dest
}
} else {
this.dests.push(dest)
stream.Stream.prototype.pipe.call(this, dest, opts)
return dest
}
}
Request.prototype.write = function () {
if (!this._started) this.start()
this.req.write.apply(this.req, arguments)
}
Request.prototype.end = function (chunk) {
if (chunk) this.write(chunk)
if (!this._started) this.start()
this.req.end()
}
Request.prototype.pause = function () {
if (!this.response) this._paused = true
else this.response.pause.apply(this.response, arguments)
}
Request.prototype.resume = function () {
if (!this.response) this._paused = false
else this.response.resume.apply(this.response, arguments)
}
Request.prototype.destroy = function () {
if (!this._ended) this.end()
}
// organize params for post, put, head, del
function initParams(uri, options, callback) {
if ((typeof options === 'function') && !callback) callback = options;
if (typeof options === 'object') {
options.uri = uri;
} else if (typeof uri === 'string') {
options = {uri:uri};
} else {
options = uri;
uri = options.uri;
}
return { uri: uri, options: options, callback: callback };
}
function request (uri, options, callback) {
if ((typeof options === 'function') && !callback) callback = options;
if (typeof options === 'object') {
options.uri = uri;
} else if (typeof uri === 'string') {
options = {uri:uri};
} else {
options = uri;
}
if (callback) options.callback = callback;
var r = new Request(options)
return r
}
module.exports = request
request.defaults = function (options) {
var def = function (method) {
var d = function (uri, opts, callback) {
var params = initParams(uri, opts, callback);
for (var i in options) {
if (params.options[i] === undefined) params.options[i] = options[i]
}
return method(params.uri, params.options, params.callback)
}
return d
}
var de = def(request)
de.get = def(request.get)
de.post = def(request.post)
de.put = def(request.put)
de.head = def(request.head)
de.del = def(request.del)
de.cookie = def(request.cookie)
de.jar = def(request.jar)
return de
}
request.forever = function (agentOptions, optionsArg) {
var options = {}
if (optionsArg) {
for (option in optionsArg) {
options[option] = optionsArg[option]
}
}
if (agentOptions) options.agentOptions = agentOptions
options.forever = true
return request.defaults(options)
}
request.get = request
request.post = function (uri, options, callback) {
var params = initParams(uri, options, callback);
params.options.method = 'POST';
return request(params.uri, params.options, params.callback)
}
request.put = function (uri, options, callback) {
var params = initParams(uri, options, callback);
params.options.method = 'PUT'
return request(params.uri, params.options, params.callback)
}
request.head = function (uri, options, callback) {
var params = initParams(uri, options, callback);
params.options.method = 'HEAD'
if (params.options.body ||
params.options.requestBodyStream ||
(params.options.json && typeof params.options.json !== 'boolean') ||
params.options.multipart) {
throw new Error("HTTP HEAD requests MUST NOT include a request body.")
}
return request(params.uri, params.options, params.callback)
}
request.del = function (uri, options, callback) {
var params = initParams(uri, options, callback);
params.options.method = 'DELETE'
return request(params.uri, params.options, params.callback)
}
request.jar = function () {
return new CookieJar
}
request.cookie = function (str) {
if (str && str.uri) str = str.uri
if (typeof str !== 'string') throw new Error("The cookie function only accepts STRING as param")
return new Cookie(str)
}
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