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Mini Shell
Mini Shell
'use strict'
const { URL } = require('url')
const Minipass = require('minipass')
const Headers = require('./headers.js')
const { exportNodeCompatibleHeaders } = Headers
const Body = require('./body.js')
const { clone, extractContentType, getTotalBytes } = Body
const version = require('../package.json').version
const defaultUserAgent =
`minipass-fetch/${version} (+https://github.com/isaacs/minipass-fetch)`
const INTERNALS = Symbol('Request internals')
const isRequest = input =>
typeof input === 'object' && typeof input[INTERNALS] === 'object'
const isAbortSignal = signal => {
const proto = (
signal
&& typeof signal === 'object'
&& Object.getPrototypeOf(signal)
)
return !!(proto && proto.constructor.name === 'AbortSignal')
}
class Request extends Body {
constructor (input, init = {}) {
const parsedURL = isRequest(input) ? new URL(input.url)
: input && input.href ? new URL(input.href)
: new URL(`${input}`)
if (isRequest(input)) {
init = { ...input[INTERNALS], ...init }
} else if (!input || typeof input === 'string') {
input = {}
}
const method = (init.method || input.method || 'GET').toUpperCase()
const isGETHEAD = method === 'GET' || method === 'HEAD'
if ((init.body !== null && init.body !== undefined ||
isRequest(input) && input.body !== null) && isGETHEAD) {
throw new TypeError('Request with GET/HEAD method cannot have body')
}
const inputBody = init.body !== null && init.body !== undefined ? init.body
: isRequest(input) && input.body !== null ? clone(input)
: null
super(inputBody, {
timeout: init.timeout || input.timeout || 0,
size: init.size || input.size || 0,
})
const headers = new Headers(init.headers || input.headers || {})
if (inputBody !== null && inputBody !== undefined &&
!headers.has('Content-Type')) {
const contentType = extractContentType(inputBody)
if (contentType) {
headers.append('Content-Type', contentType)
}
}
const signal = 'signal' in init ? init.signal
: null
if (signal !== null && signal !== undefined && !isAbortSignal(signal)) {
throw new TypeError('Expected signal must be an instanceof AbortSignal')
}
// TLS specific options that are handled by node
const {
ca,
cert,
ciphers,
clientCertEngine,
crl,
dhparam,
ecdhCurve,
family,
honorCipherOrder,
key,
passphrase,
pfx,
rejectUnauthorized = process.env.NODE_TLS_REJECT_UNAUTHORIZED !== '0',
secureOptions,
secureProtocol,
servername,
sessionIdContext,
} = init
this[INTERNALS] = {
method,
redirect: init.redirect || input.redirect || 'follow',
headers,
parsedURL,
signal,
ca,
cert,
ciphers,
clientCertEngine,
crl,
dhparam,
ecdhCurve,
family,
honorCipherOrder,
key,
passphrase,
pfx,
rejectUnauthorized,
secureOptions,
secureProtocol,
servername,
sessionIdContext,
}
// node-fetch-only options
this.follow = init.follow !== undefined ? init.follow
: input.follow !== undefined ? input.follow
: 20
this.compress = init.compress !== undefined ? init.compress
: input.compress !== undefined ? input.compress
: true
this.counter = init.counter || input.counter || 0
this.agent = init.agent || input.agent
}
get method () {
return this[INTERNALS].method
}
get url () {
return this[INTERNALS].parsedURL.toString()
}
get headers () {
return this[INTERNALS].headers
}
get redirect () {
return this[INTERNALS].redirect
}
get signal () {
return this[INTERNALS].signal
}
clone () {
return new Request(this)
}
get [Symbol.toStringTag] () {
return 'Request'
}
static getNodeRequestOptions (request) {
const parsedURL = request[INTERNALS].parsedURL
const headers = new Headers(request[INTERNALS].headers)
// fetch step 1.3
if (!headers.has('Accept')) {
headers.set('Accept', '*/*')
}
// Basic fetch
if (!/^https?:$/.test(parsedURL.protocol)) {
throw new TypeError('Only HTTP(S) protocols are supported')
}
if (request.signal &&
Minipass.isStream(request.body) &&
typeof request.body.destroy !== 'function') {
throw new Error(
'Cancellation of streamed requests with AbortSignal is not supported')
}
// HTTP-network-or-cache fetch steps 2.4-2.7
const contentLengthValue =
(request.body === null || request.body === undefined) &&
/^(POST|PUT)$/i.test(request.method) ? '0'
: request.body !== null && request.body !== undefined
? getTotalBytes(request)
: null
if (contentLengthValue) {
headers.set('Content-Length', contentLengthValue + '')
}
// HTTP-network-or-cache fetch step 2.11
if (!headers.has('User-Agent')) {
headers.set('User-Agent', defaultUserAgent)
}
// HTTP-network-or-cache fetch step 2.15
if (request.compress && !headers.has('Accept-Encoding')) {
headers.set('Accept-Encoding', 'gzip,deflate')
}
const agent = typeof request.agent === 'function'
? request.agent(parsedURL)
: request.agent
if (!headers.has('Connection') && !agent) {
headers.set('Connection', 'close')
}
// TLS specific options that are handled by node
const {
ca,
cert,
ciphers,
clientCertEngine,
crl,
dhparam,
ecdhCurve,
family,
honorCipherOrder,
key,
passphrase,
pfx,
rejectUnauthorized,
secureOptions,
secureProtocol,
servername,
sessionIdContext,
} = request[INTERNALS]
// HTTP-network fetch step 4.2
// chunked encoding is handled by Node.js
// we cannot spread parsedURL directly, so we have to read each property one-by-one
// and map them to the equivalent https?.request() method options
const urlProps = {
auth: parsedURL.username || parsedURL.password
? `${parsedURL.username}:${parsedURL.password}`
: '',
host: parsedURL.host,
hostname: parsedURL.hostname,
path: `${parsedURL.pathname}${parsedURL.search}`,
port: parsedURL.port,
protocol: parsedURL.protocol,
}
return {
...urlProps,
method: request.method,
headers: exportNodeCompatibleHeaders(headers),
agent,
ca,
cert,
ciphers,
clientCertEngine,
crl,
dhparam,
ecdhCurve,
family,
honorCipherOrder,
key,
passphrase,
pfx,
rejectUnauthorized,
secureOptions,
secureProtocol,
servername,
sessionIdContext,
}
}
}
module.exports = Request
Object.defineProperties(Request.prototype, {
method: { enumerable: true },
url: { enumerable: true },
headers: { enumerable: true },
redirect: { enumerable: true },
clone: { enumerable: true },
signal: { enumerable: true },
})
Zerion Mini Shell 1.0