action-debian-package/node_modules/undici/lib/fetch/body.js

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2024-01-06 12:51:02 +00:00
'use strict'
const Busboy = require('@fastify/busboy')
const util = require('../core/util')
const {
ReadableStreamFrom,
isBlobLike,
isReadableStreamLike,
readableStreamClose,
createDeferredPromise,
fullyReadBody
} = require('./util')
const { FormData } = require('./formdata')
const { kState } = require('./symbols')
const { webidl } = require('./webidl')
const { DOMException, structuredClone } = require('./constants')
const { Blob, File: NativeFile } = require('buffer')
const { kBodyUsed } = require('../core/symbols')
const assert = require('assert')
const { isErrored } = require('../core/util')
const { isUint8Array, isArrayBuffer } = require('util/types')
const { File: UndiciFile } = require('./file')
const { parseMIMEType, serializeAMimeType } = require('./dataURL')
let ReadableStream = globalThis.ReadableStream
/** @type {globalThis['File']} */
const File = NativeFile ?? UndiciFile
const textEncoder = new TextEncoder()
const textDecoder = new TextDecoder()
// https://fetch.spec.whatwg.org/#concept-bodyinit-extract
function extractBody (object, keepalive = false) {
if (!ReadableStream) {
ReadableStream = require('stream/web').ReadableStream
}
// 1. Let stream be null.
let stream = null
// 2. If object is a ReadableStream object, then set stream to object.
if (object instanceof ReadableStream) {
stream = object
} else if (isBlobLike(object)) {
// 3. Otherwise, if object is a Blob object, set stream to the
// result of running objects get stream.
stream = object.stream()
} else {
// 4. Otherwise, set stream to a new ReadableStream object, and set
// up stream.
stream = new ReadableStream({
async pull (controller) {
controller.enqueue(
typeof source === 'string' ? textEncoder.encode(source) : source
)
queueMicrotask(() => readableStreamClose(controller))
},
start () {},
type: undefined
})
}
// 5. Assert: stream is a ReadableStream object.
assert(isReadableStreamLike(stream))
// 6. Let action be null.
let action = null
// 7. Let source be null.
let source = null
// 8. Let length be null.
let length = null
// 9. Let type be null.
let type = null
// 10. Switch on object:
if (typeof object === 'string') {
// Set source to the UTF-8 encoding of object.
// Note: setting source to a Uint8Array here breaks some mocking assumptions.
source = object
// Set type to `text/plain;charset=UTF-8`.
type = 'text/plain;charset=UTF-8'
} else if (object instanceof URLSearchParams) {
// URLSearchParams
// spec says to run application/x-www-form-urlencoded on body.list
// this is implemented in Node.js as apart of an URLSearchParams instance toString method
// See: https://github.com/nodejs/node/blob/e46c680bf2b211bbd52cf959ca17ee98c7f657f5/lib/internal/url.js#L490
// and https://github.com/nodejs/node/blob/e46c680bf2b211bbd52cf959ca17ee98c7f657f5/lib/internal/url.js#L1100
// Set source to the result of running the application/x-www-form-urlencoded serializer with objects list.
source = object.toString()
// Set type to `application/x-www-form-urlencoded;charset=UTF-8`.
type = 'application/x-www-form-urlencoded;charset=UTF-8'
} else if (isArrayBuffer(object)) {
// BufferSource/ArrayBuffer
// Set source to a copy of the bytes held by object.
source = new Uint8Array(object.slice())
} else if (ArrayBuffer.isView(object)) {
// BufferSource/ArrayBufferView
// Set source to a copy of the bytes held by object.
source = new Uint8Array(object.buffer.slice(object.byteOffset, object.byteOffset + object.byteLength))
} else if (util.isFormDataLike(object)) {
const boundary = `----formdata-undici-0${`${Math.floor(Math.random() * 1e11)}`.padStart(11, '0')}`
const prefix = `--${boundary}\r\nContent-Disposition: form-data`
/*! formdata-polyfill. MIT License. Jimmy Wärting <https://jimmy.warting.se/opensource> */
const escape = (str) =>
str.replace(/\n/g, '%0A').replace(/\r/g, '%0D').replace(/"/g, '%22')
const normalizeLinefeeds = (value) => value.replace(/\r?\n|\r/g, '\r\n')
// Set action to this step: run the multipart/form-data
// encoding algorithm, with objects entry list and UTF-8.
// - This ensures that the body is immutable and can't be changed afterwords
// - That the content-length is calculated in advance.
// - And that all parts are pre-encoded and ready to be sent.
const blobParts = []
const rn = new Uint8Array([13, 10]) // '\r\n'
length = 0
let hasUnknownSizeValue = false
for (const [name, value] of object) {
if (typeof value === 'string') {
const chunk = textEncoder.encode(prefix +
`; name="${escape(normalizeLinefeeds(name))}"` +
`\r\n\r\n${normalizeLinefeeds(value)}\r\n`)
blobParts.push(chunk)
length += chunk.byteLength
} else {
const chunk = textEncoder.encode(`${prefix}; name="${escape(normalizeLinefeeds(name))}"` +
(value.name ? `; filename="${escape(value.name)}"` : '') + '\r\n' +
`Content-Type: ${
value.type || 'application/octet-stream'
}\r\n\r\n`)
blobParts.push(chunk, value, rn)
if (typeof value.size === 'number') {
length += chunk.byteLength + value.size + rn.byteLength
} else {
hasUnknownSizeValue = true
}
}
}
const chunk = textEncoder.encode(`--${boundary}--`)
blobParts.push(chunk)
length += chunk.byteLength
if (hasUnknownSizeValue) {
length = null
}
// Set source to object.
source = object
action = async function * () {
for (const part of blobParts) {
if (part.stream) {
yield * part.stream()
} else {
yield part
}
}
}
// Set type to `multipart/form-data; boundary=`,
// followed by the multipart/form-data boundary string generated
// by the multipart/form-data encoding algorithm.
type = 'multipart/form-data; boundary=' + boundary
} else if (isBlobLike(object)) {
// Blob
// Set source to object.
source = object
// Set length to objects size.
length = object.size
// If objects type attribute is not the empty byte sequence, set
// type to its value.
if (object.type) {
type = object.type
}
} else if (typeof object[Symbol.asyncIterator] === 'function') {
// If keepalive is true, then throw a TypeError.
if (keepalive) {
throw new TypeError('keepalive')
}
// If object is disturbed or locked, then throw a TypeError.
if (util.isDisturbed(object) || object.locked) {
throw new TypeError(
'Response body object should not be disturbed or locked'
)
}
stream =
object instanceof ReadableStream ? object : ReadableStreamFrom(object)
}
// 11. If source is a byte sequence, then set action to a
// step that returns source and length to sources length.
if (typeof source === 'string' || util.isBuffer(source)) {
length = Buffer.byteLength(source)
}
// 12. If action is non-null, then run these steps in in parallel:
if (action != null) {
// Run action.
let iterator
stream = new ReadableStream({
async start () {
iterator = action(object)[Symbol.asyncIterator]()
},
async pull (controller) {
const { value, done } = await iterator.next()
if (done) {
// When running action is done, close stream.
queueMicrotask(() => {
controller.close()
})
} else {
// Whenever one or more bytes are available and stream is not errored,
// enqueue a Uint8Array wrapping an ArrayBuffer containing the available
// bytes into stream.
if (!isErrored(stream)) {
controller.enqueue(new Uint8Array(value))
}
}
return controller.desiredSize > 0
},
async cancel (reason) {
await iterator.return()
},
type: undefined
})
}
// 13. Let body be a body whose stream is stream, source is source,
// and length is length.
const body = { stream, source, length }
// 14. Return (body, type).
return [body, type]
}
// https://fetch.spec.whatwg.org/#bodyinit-safely-extract
function safelyExtractBody (object, keepalive = false) {
if (!ReadableStream) {
// istanbul ignore next
ReadableStream = require('stream/web').ReadableStream
}
// To safely extract a body and a `Content-Type` value from
// a byte sequence or BodyInit object object, run these steps:
// 1. If object is a ReadableStream object, then:
if (object instanceof ReadableStream) {
// Assert: object is neither disturbed nor locked.
// istanbul ignore next
assert(!util.isDisturbed(object), 'The body has already been consumed.')
// istanbul ignore next
assert(!object.locked, 'The stream is locked.')
}
// 2. Return the results of extracting object.
return extractBody(object, keepalive)
}
function cloneBody (body) {
// To clone a body body, run these steps:
// https://fetch.spec.whatwg.org/#concept-body-clone
// 1. Let « out1, out2 » be the result of teeing bodys stream.
const [out1, out2] = body.stream.tee()
const out2Clone = structuredClone(out2, { transfer: [out2] })
// This, for whatever reasons, unrefs out2Clone which allows
// the process to exit by itself.
const [, finalClone] = out2Clone.tee()
// 2. Set bodys stream to out1.
body.stream = out1
// 3. Return a body whose stream is out2 and other members are copied from body.
return {
stream: finalClone,
length: body.length,
source: body.source
}
}
async function * consumeBody (body) {
if (body) {
if (isUint8Array(body)) {
yield body
} else {
const stream = body.stream
if (util.isDisturbed(stream)) {
throw new TypeError('The body has already been consumed.')
}
if (stream.locked) {
throw new TypeError('The stream is locked.')
}
// Compat.
stream[kBodyUsed] = true
yield * stream
}
}
}
function throwIfAborted (state) {
if (state.aborted) {
throw new DOMException('The operation was aborted.', 'AbortError')
}
}
function bodyMixinMethods (instance) {
const methods = {
blob () {
// The blob() method steps are to return the result of
// running consume body with this and the following step
// given a byte sequence bytes: return a Blob whose
// contents are bytes and whose type attribute is thiss
// MIME type.
return specConsumeBody(this, (bytes) => {
let mimeType = bodyMimeType(this)
if (mimeType === 'failure') {
mimeType = ''
} else if (mimeType) {
mimeType = serializeAMimeType(mimeType)
}
// Return a Blob whose contents are bytes and type attribute
// is mimeType.
return new Blob([bytes], { type: mimeType })
}, instance)
},
arrayBuffer () {
// The arrayBuffer() method steps are to return the result
// of running consume body with this and the following step
// given a byte sequence bytes: return a new ArrayBuffer
// whose contents are bytes.
return specConsumeBody(this, (bytes) => {
return new Uint8Array(bytes).buffer
}, instance)
},
text () {
// The text() method steps are to return the result of running
// consume body with this and UTF-8 decode.
return specConsumeBody(this, utf8DecodeBytes, instance)
},
json () {
// The json() method steps are to return the result of running
// consume body with this and parse JSON from bytes.
return specConsumeBody(this, parseJSONFromBytes, instance)
},
async formData () {
webidl.brandCheck(this, instance)
throwIfAborted(this[kState])
const contentType = this.headers.get('Content-Type')
// If mimeTypes essence is "multipart/form-data", then:
if (/multipart\/form-data/.test(contentType)) {
const headers = {}
for (const [key, value] of this.headers) headers[key.toLowerCase()] = value
const responseFormData = new FormData()
let busboy
try {
busboy = new Busboy({
headers,
preservePath: true
})
} catch (err) {
throw new DOMException(`${err}`, 'AbortError')
}
busboy.on('field', (name, value) => {
responseFormData.append(name, value)
})
busboy.on('file', (name, value, filename, encoding, mimeType) => {
const chunks = []
if (encoding === 'base64' || encoding.toLowerCase() === 'base64') {
let base64chunk = ''
value.on('data', (chunk) => {
base64chunk += chunk.toString().replace(/[\r\n]/gm, '')
const end = base64chunk.length - base64chunk.length % 4
chunks.push(Buffer.from(base64chunk.slice(0, end), 'base64'))
base64chunk = base64chunk.slice(end)
})
value.on('end', () => {
chunks.push(Buffer.from(base64chunk, 'base64'))
responseFormData.append(name, new File(chunks, filename, { type: mimeType }))
})
} else {
value.on('data', (chunk) => {
chunks.push(chunk)
})
value.on('end', () => {
responseFormData.append(name, new File(chunks, filename, { type: mimeType }))
})
}
})
const busboyResolve = new Promise((resolve, reject) => {
busboy.on('finish', resolve)
busboy.on('error', (err) => reject(new TypeError(err)))
})
if (this.body !== null) for await (const chunk of consumeBody(this[kState].body)) busboy.write(chunk)
busboy.end()
await busboyResolve
return responseFormData
} else if (/application\/x-www-form-urlencoded/.test(contentType)) {
// Otherwise, if mimeTypes essence is "application/x-www-form-urlencoded", then:
// 1. Let entries be the result of parsing bytes.
let entries
try {
let text = ''
// application/x-www-form-urlencoded parser will keep the BOM.
// https://url.spec.whatwg.org/#concept-urlencoded-parser
// Note that streaming decoder is stateful and cannot be reused
const streamingDecoder = new TextDecoder('utf-8', { ignoreBOM: true })
for await (const chunk of consumeBody(this[kState].body)) {
if (!isUint8Array(chunk)) {
throw new TypeError('Expected Uint8Array chunk')
}
text += streamingDecoder.decode(chunk, { stream: true })
}
text += streamingDecoder.decode()
entries = new URLSearchParams(text)
} catch (err) {
// istanbul ignore next: Unclear when new URLSearchParams can fail on a string.
// 2. If entries is failure, then throw a TypeError.
throw Object.assign(new TypeError(), { cause: err })
}
// 3. Return a new FormData object whose entries are entries.
const formData = new FormData()
for (const [name, value] of entries) {
formData.append(name, value)
}
return formData
} else {
// Wait a tick before checking if the request has been aborted.
// Otherwise, a TypeError can be thrown when an AbortError should.
await Promise.resolve()
throwIfAborted(this[kState])
// Otherwise, throw a TypeError.
throw webidl.errors.exception({
header: `${instance.name}.formData`,
message: 'Could not parse content as FormData.'
})
}
}
}
return methods
}
function mixinBody (prototype) {
Object.assign(prototype.prototype, bodyMixinMethods(prototype))
}
/**
* @see https://fetch.spec.whatwg.org/#concept-body-consume-body
* @param {Response|Request} object
* @param {(value: unknown) => unknown} convertBytesToJSValue
* @param {Response|Request} instance
*/
async function specConsumeBody (object, convertBytesToJSValue, instance) {
webidl.brandCheck(object, instance)
throwIfAborted(object[kState])
// 1. If object is unusable, then return a promise rejected
// with a TypeError.
if (bodyUnusable(object[kState].body)) {
throw new TypeError('Body is unusable')
}
// 2. Let promise be a new promise.
const promise = createDeferredPromise()
// 3. Let errorSteps given error be to reject promise with error.
const errorSteps = (error) => promise.reject(error)
// 4. Let successSteps given a byte sequence data be to resolve
// promise with the result of running convertBytesToJSValue
// with data. If that threw an exception, then run errorSteps
// with that exception.
const successSteps = (data) => {
try {
promise.resolve(convertBytesToJSValue(data))
} catch (e) {
errorSteps(e)
}
}
// 5. If objects body is null, then run successSteps with an
// empty byte sequence.
if (object[kState].body == null) {
successSteps(new Uint8Array())
return promise.promise
}
// 6. Otherwise, fully read objects body given successSteps,
// errorSteps, and objects relevant global object.
await fullyReadBody(object[kState].body, successSteps, errorSteps)
// 7. Return promise.
return promise.promise
}
// https://fetch.spec.whatwg.org/#body-unusable
function bodyUnusable (body) {
// An object including the Body interface mixin is
// said to be unusable if its body is non-null and
// its bodys stream is disturbed or locked.
return body != null && (body.stream.locked || util.isDisturbed(body.stream))
}
/**
* @see https://encoding.spec.whatwg.org/#utf-8-decode
* @param {Buffer} buffer
*/
function utf8DecodeBytes (buffer) {
if (buffer.length === 0) {
return ''
}
// 1. Let buffer be the result of peeking three bytes from
// ioQueue, converted to a byte sequence.
// 2. If buffer is 0xEF 0xBB 0xBF, then read three
// bytes from ioQueue. (Do nothing with those bytes.)
if (buffer[0] === 0xEF && buffer[1] === 0xBB && buffer[2] === 0xBF) {
buffer = buffer.subarray(3)
}
// 3. Process a queue with an instance of UTF-8s
// decoder, ioQueue, output, and "replacement".
const output = textDecoder.decode(buffer)
// 4. Return output.
return output
}
/**
* @see https://infra.spec.whatwg.org/#parse-json-bytes-to-a-javascript-value
* @param {Uint8Array} bytes
*/
function parseJSONFromBytes (bytes) {
return JSON.parse(utf8DecodeBytes(bytes))
}
/**
* @see https://fetch.spec.whatwg.org/#concept-body-mime-type
* @param {import('./response').Response|import('./request').Request} object
*/
function bodyMimeType (object) {
const { headersList } = object[kState]
const contentType = headersList.get('content-type')
if (contentType === null) {
return 'failure'
}
return parseMIMEType(contentType)
}
module.exports = {
extractBody,
safelyExtractBody,
cloneBody,
mixinBody
}