File: /var/www/vhost/disk-apps/pwa.sports-crowd.com/node_modules/undici/lib/web/fetch/util.js
'use strict'
const { Transform } = require('node:stream')
const zlib = require('node:zlib')
const { redirectStatusSet, referrerPolicySet: referrerPolicyTokens, badPortsSet } = require('./constants')
const { getGlobalOrigin } = require('./global')
const { collectASequenceOfCodePoints, collectAnHTTPQuotedString, removeChars, parseMIMEType } = require('./data-url')
const { performance } = require('node:perf_hooks')
const { isBlobLike, ReadableStreamFrom, isValidHTTPToken, normalizedMethodRecordsBase } = require('../../core/util')
const assert = require('node:assert')
const { isUint8Array } = require('node:util/types')
const { webidl } = require('./webidl')
let supportedHashes = []
// https://nodejs.org/api/crypto.html#determining-if-crypto-support-is-unavailable
/** @type {import('crypto')} */
let crypto
try {
crypto = require('node:crypto')
const possibleRelevantHashes = ['sha256', 'sha384', 'sha512']
supportedHashes = crypto.getHashes().filter((hash) => possibleRelevantHashes.includes(hash))
/* c8 ignore next 3 */
} catch {
}
function responseURL (response) {
// https://fetch.spec.whatwg.org/#responses
// A response has an associated URL. It is a pointer to the last URL
// in response’s URL list and null if response’s URL list is empty.
const urlList = response.urlList
const length = urlList.length
return length === 0 ? null : urlList[length - 1].toString()
}
// https://fetch.spec.whatwg.org/#concept-response-location-url
function responseLocationURL (response, requestFragment) {
// 1. If response’s status is not a redirect status, then return null.
if (!redirectStatusSet.has(response.status)) {
return null
}
// 2. Let location be the result of extracting header list values given
// `Location` and response’s header list.
let location = response.headersList.get('location', true)
// 3. If location is a header value, then set location to the result of
// parsing location with response’s URL.
if (location !== null && isValidHeaderValue(location)) {
if (!isValidEncodedURL(location)) {
// Some websites respond location header in UTF-8 form without encoding them as ASCII
// and major browsers redirect them to correctly UTF-8 encoded addresses.
// Here, we handle that behavior in the same way.
location = normalizeBinaryStringToUtf8(location)
}
location = new URL(location, responseURL(response))
}
// 4. If location is a URL whose fragment is null, then set location’s
// fragment to requestFragment.
if (location && !location.hash) {
location.hash = requestFragment
}
// 5. Return location.
return location
}
/**
* @see https://www.rfc-editor.org/rfc/rfc1738#section-2.2
* @param {string} url
* @returns {boolean}
*/
function isValidEncodedURL (url) {
for (let i = 0; i < url.length; ++i) {
const code = url.charCodeAt(i)
if (
code > 0x7E || // Non-US-ASCII + DEL
code < 0x20 // Control characters NUL - US
) {
return false
}
}
return true
}
/**
* If string contains non-ASCII characters, assumes it's UTF-8 encoded and decodes it.
* Since UTF-8 is a superset of ASCII, this will work for ASCII strings as well.
* @param {string} value
* @returns {string}
*/
function normalizeBinaryStringToUtf8 (value) {
return Buffer.from(value, 'binary').toString('utf8')
}
/** @returns {URL} */
function requestCurrentURL (request) {
return request.urlList[request.urlList.length - 1]
}
function requestBadPort (request) {
// 1. Let url be request’s current URL.
const url = requestCurrentURL(request)
// 2. If url’s scheme is an HTTP(S) scheme and url’s port is a bad port,
// then return blocked.
if (urlIsHttpHttpsScheme(url) && badPortsSet.has(url.port)) {
return 'blocked'
}
// 3. Return allowed.
return 'allowed'
}
function isErrorLike (object) {
return object instanceof Error || (
object?.constructor?.name === 'Error' ||
object?.constructor?.name === 'DOMException'
)
}
// Check whether |statusText| is a ByteString and
// matches the Reason-Phrase token production.
// RFC 2616: https://tools.ietf.org/html/rfc2616
// RFC 7230: https://tools.ietf.org/html/rfc7230
// "reason-phrase = *( HTAB / SP / VCHAR / obs-text )"
// https://github.com/chromium/chromium/blob/94.0.4604.1/third_party/blink/renderer/core/fetch/response.cc#L116
function isValidReasonPhrase (statusText) {
for (let i = 0; i < statusText.length; ++i) {
const c = statusText.charCodeAt(i)
if (
!(
(
c === 0x09 || // HTAB
(c >= 0x20 && c <= 0x7e) || // SP / VCHAR
(c >= 0x80 && c <= 0xff)
) // obs-text
)
) {
return false
}
}
return true
}
/**
* @see https://fetch.spec.whatwg.org/#header-name
* @param {string} potentialValue
*/
const isValidHeaderName = isValidHTTPToken
/**
* @see https://fetch.spec.whatwg.org/#header-value
* @param {string} potentialValue
*/
function isValidHeaderValue (potentialValue) {
// - Has no leading or trailing HTTP tab or space bytes.
// - Contains no 0x00 (NUL) or HTTP newline bytes.
return (
potentialValue[0] === '\t' ||
potentialValue[0] === ' ' ||
potentialValue[potentialValue.length - 1] === '\t' ||
potentialValue[potentialValue.length - 1] === ' ' ||
potentialValue.includes('\n') ||
potentialValue.includes('\r') ||
potentialValue.includes('\0')
) === false
}
// https://w3c.github.io/webappsec-referrer-policy/#set-requests-referrer-policy-on-redirect
function setRequestReferrerPolicyOnRedirect (request, actualResponse) {
// Given a request request and a response actualResponse, this algorithm
// updates request’s referrer policy according to the Referrer-Policy
// header (if any) in actualResponse.
// 1. Let policy be the result of executing § 8.1 Parse a referrer policy
// from a Referrer-Policy header on actualResponse.
// 8.1 Parse a referrer policy from a Referrer-Policy header
// 1. Let policy-tokens be the result of extracting header list values given `Referrer-Policy` and response’s header list.
const { headersList } = actualResponse
// 2. Let policy be the empty string.
// 3. For each token in policy-tokens, if token is a referrer policy and token is not the empty string, then set policy to token.
// 4. Return policy.
const policyHeader = (headersList.get('referrer-policy', true) ?? '').split(',')
// Note: As the referrer-policy can contain multiple policies
// separated by comma, we need to loop through all of them
// and pick the first valid one.
// Ref: https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Referrer-Policy#specify_a_fallback_policy
let policy = ''
if (policyHeader.length > 0) {
// The right-most policy takes precedence.
// The left-most policy is the fallback.
for (let i = policyHeader.length; i !== 0; i--) {
const token = policyHeader[i - 1].trim()
if (referrerPolicyTokens.has(token)) {
policy = token
break
}
}
}
// 2. If policy is not the empty string, then set request’s referrer policy to policy.
if (policy !== '') {
request.referrerPolicy = policy
}
}
// https://fetch.spec.whatwg.org/#cross-origin-resource-policy-check
function crossOriginResourcePolicyCheck () {
// TODO
return 'allowed'
}
// https://fetch.spec.whatwg.org/#concept-cors-check
function corsCheck () {
// TODO
return 'success'
}
// https://fetch.spec.whatwg.org/#concept-tao-check
function TAOCheck () {
// TODO
return 'success'
}
function appendFetchMetadata (httpRequest) {
// https://w3c.github.io/webappsec-fetch-metadata/#sec-fetch-dest-header
// TODO
// https://w3c.github.io/webappsec-fetch-metadata/#sec-fetch-mode-header
// 1. Assert: r’s url is a potentially trustworthy URL.
// TODO
// 2. Let header be a Structured Header whose value is a token.
let header = null
// 3. Set header’s value to r’s mode.
header = httpRequest.mode
// 4. Set a structured field value `Sec-Fetch-Mode`/header in r’s header list.
httpRequest.headersList.set('sec-fetch-mode', header, true)
// https://w3c.github.io/webappsec-fetch-metadata/#sec-fetch-site-header
// TODO
// https://w3c.github.io/webappsec-fetch-metadata/#sec-fetch-user-header
// TODO
}
// https://fetch.spec.whatwg.org/#append-a-request-origin-header
function appendRequestOriginHeader (request) {
// 1. Let serializedOrigin be the result of byte-serializing a request origin
// with request.
// TODO: implement "byte-serializing a request origin"
let serializedOrigin = request.origin
// - "'client' is changed to an origin during fetching."
// This doesn't happen in undici (in most cases) because undici, by default,
// has no concept of origin.
// - request.origin can also be set to request.client.origin (client being
// an environment settings object), which is undefined without using
// setGlobalOrigin.
if (serializedOrigin === 'client' || serializedOrigin === undefined) {
return
}
// 2. If request’s response tainting is "cors" or request’s mode is "websocket",
// then append (`Origin`, serializedOrigin) to request’s header list.
// 3. Otherwise, if request’s method is neither `GET` nor `HEAD`, then:
if (request.responseTainting === 'cors' || request.mode === 'websocket') {
request.headersList.append('origin', serializedOrigin, true)
} else if (request.method !== 'GET' && request.method !== 'HEAD') {
// 1. Switch on request’s referrer policy:
switch (request.referrerPolicy) {
case 'no-referrer':
// Set serializedOrigin to `null`.
serializedOrigin = null
break
case 'no-referrer-when-downgrade':
case 'strict-origin':
case 'strict-origin-when-cross-origin':
// If request’s origin is a tuple origin, its scheme is "https", and
// request’s current URL’s scheme is not "https", then set
// serializedOrigin to `null`.
if (request.origin && urlHasHttpsScheme(request.origin) && !urlHasHttpsScheme(requestCurrentURL(request))) {
serializedOrigin = null
}
break
case 'same-origin':
// If request’s origin is not same origin with request’s current URL’s
// origin, then set serializedOrigin to `null`.
if (!sameOrigin(request, requestCurrentURL(request))) {
serializedOrigin = null
}
break
default:
// Do nothing.
}
// 2. Append (`Origin`, serializedOrigin) to request’s header list.
request.headersList.append('origin', serializedOrigin, true)
}
}
// https://w3c.github.io/hr-time/#dfn-coarsen-time
function coarsenTime (timestamp, crossOriginIsolatedCapability) {
// TODO
return timestamp
}
// https://fetch.spec.whatwg.org/#clamp-and-coarsen-connection-timing-info
function clampAndCoarsenConnectionTimingInfo (connectionTimingInfo, defaultStartTime, crossOriginIsolatedCapability) {
if (!connectionTimingInfo?.startTime || connectionTimingInfo.startTime < defaultStartTime) {
return {
domainLookupStartTime: defaultStartTime,
domainLookupEndTime: defaultStartTime,
connectionStartTime: defaultStartTime,
connectionEndTime: defaultStartTime,
secureConnectionStartTime: defaultStartTime,
ALPNNegotiatedProtocol: connectionTimingInfo?.ALPNNegotiatedProtocol
}
}
return {
domainLookupStartTime: coarsenTime(connectionTimingInfo.domainLookupStartTime, crossOriginIsolatedCapability),
domainLookupEndTime: coarsenTime(connectionTimingInfo.domainLookupEndTime, crossOriginIsolatedCapability),
connectionStartTime: coarsenTime(connectionTimingInfo.connectionStartTime, crossOriginIsolatedCapability),
connectionEndTime: coarsenTime(connectionTimingInfo.connectionEndTime, crossOriginIsolatedCapability),
secureConnectionStartTime: coarsenTime(connectionTimingInfo.secureConnectionStartTime, crossOriginIsolatedCapability),
ALPNNegotiatedProtocol: connectionTimingInfo.ALPNNegotiatedProtocol
}
}
// https://w3c.github.io/hr-time/#dfn-coarsened-shared-current-time
function coarsenedSharedCurrentTime (crossOriginIsolatedCapability) {
return coarsenTime(performance.now(), crossOriginIsolatedCapability)
}
// https://fetch.spec.whatwg.org/#create-an-opaque-timing-info
function createOpaqueTimingInfo (timingInfo) {
return {
startTime: timingInfo.startTime ?? 0,
redirectStartTime: 0,
redirectEndTime: 0,
postRedirectStartTime: timingInfo.startTime ?? 0,
finalServiceWorkerStartTime: 0,
finalNetworkResponseStartTime: 0,
finalNetworkRequestStartTime: 0,
endTime: 0,
encodedBodySize: 0,
decodedBodySize: 0,
finalConnectionTimingInfo: null
}
}
// https://html.spec.whatwg.org/multipage/origin.html#policy-container
function makePolicyContainer () {
// Note: the fetch spec doesn't make use of embedder policy or CSP list
return {
referrerPolicy: 'strict-origin-when-cross-origin'
}
}
// https://html.spec.whatwg.org/multipage/origin.html#clone-a-policy-container
function clonePolicyContainer (policyContainer) {
return {
referrerPolicy: policyContainer.referrerPolicy
}
}
// https://w3c.github.io/webappsec-referrer-policy/#determine-requests-referrer
function determineRequestsReferrer (request) {
// 1. Let policy be request's referrer policy.
const policy = request.referrerPolicy
// Note: policy cannot (shouldn't) be null or an empty string.
assert(policy)
// 2. Let environment be request’s client.
let referrerSource = null
// 3. Switch on request’s referrer:
if (request.referrer === 'client') {
// Note: node isn't a browser and doesn't implement document/iframes,
// so we bypass this step and replace it with our own.
const globalOrigin = getGlobalOrigin()
if (!globalOrigin || globalOrigin.origin === 'null') {
return 'no-referrer'
}
// note: we need to clone it as it's mutated
referrerSource = new URL(globalOrigin)
} else if (request.referrer instanceof URL) {
// Let referrerSource be request’s referrer.
referrerSource = request.referrer
}
// 4. Let request’s referrerURL be the result of stripping referrerSource for
// use as a referrer.
let referrerURL = stripURLForReferrer(referrerSource)
// 5. Let referrerOrigin be the result of stripping referrerSource for use as
// a referrer, with the origin-only flag set to true.
const referrerOrigin = stripURLForReferrer(referrerSource, true)
// 6. If the result of serializing referrerURL is a string whose length is
// greater than 4096, set referrerURL to referrerOrigin.
if (referrerURL.toString().length > 4096) {
referrerURL = referrerOrigin
}
const areSameOrigin = sameOrigin(request, referrerURL)
const isNonPotentiallyTrustWorthy = isURLPotentiallyTrustworthy(referrerURL) &&
!isURLPotentiallyTrustworthy(request.url)
// 8. Execute the switch statements corresponding to the value of policy:
switch (policy) {
case 'origin': return referrerOrigin != null ? referrerOrigin : stripURLForReferrer(referrerSource, true)
case 'unsafe-url': return referrerURL
case 'same-origin':
return areSameOrigin ? referrerOrigin : 'no-referrer'
case 'origin-when-cross-origin':
return areSameOrigin ? referrerURL : referrerOrigin
case 'strict-origin-when-cross-origin': {
const currentURL = requestCurrentURL(request)
// 1. If the origin of referrerURL and the origin of request’s current
// URL are the same, then return referrerURL.
if (sameOrigin(referrerURL, currentURL)) {
return referrerURL
}
// 2. If referrerURL is a potentially trustworthy URL and request’s
// current URL is not a potentially trustworthy URL, then return no
// referrer.
if (isURLPotentiallyTrustworthy(referrerURL) && !isURLPotentiallyTrustworthy(currentURL)) {
return 'no-referrer'
}
// 3. Return referrerOrigin.
return referrerOrigin
}
case 'strict-origin': // eslint-disable-line
/**
* 1. If referrerURL is a potentially trustworthy URL and
* request’s current URL is not a potentially trustworthy URL,
* then return no referrer.
* 2. Return referrerOrigin
*/
case 'no-referrer-when-downgrade': // eslint-disable-line
/**
* 1. If referrerURL is a potentially trustworthy URL and
* request’s current URL is not a potentially trustworthy URL,
* then return no referrer.
* 2. Return referrerOrigin
*/
default: // eslint-disable-line
return isNonPotentiallyTrustWorthy ? 'no-referrer' : referrerOrigin
}
}
/**
* @see https://w3c.github.io/webappsec-referrer-policy/#strip-url
* @param {URL} url
* @param {boolean|undefined} originOnly
*/
function stripURLForReferrer (url, originOnly) {
// 1. Assert: url is a URL.
assert(url instanceof URL)
url = new URL(url)
// 2. If url’s scheme is a local scheme, then return no referrer.
if (url.protocol === 'file:' || url.protocol === 'about:' || url.protocol === 'blank:') {
return 'no-referrer'
}
// 3. Set url’s username to the empty string.
url.username = ''
// 4. Set url’s password to the empty string.
url.password = ''
// 5. Set url’s fragment to null.
url.hash = ''
// 6. If the origin-only flag is true, then:
if (originOnly) {
// 1. Set url’s path to « the empty string ».
url.pathname = ''
// 2. Set url’s query to null.
url.search = ''
}
// 7. Return url.
return url
}
function isURLPotentiallyTrustworthy (url) {
if (!(url instanceof URL)) {
return false
}
// If child of about, return true
if (url.href === 'about:blank' || url.href === 'about:srcdoc') {
return true
}
// If scheme is data, return true
if (url.protocol === 'data:') return true
// If file, return true
if (url.protocol === 'file:') return true
return isOriginPotentiallyTrustworthy(url.origin)
function isOriginPotentiallyTrustworthy (origin) {
// If origin is explicitly null, return false
if (origin == null || origin === 'null') return false
const originAsURL = new URL(origin)
// If secure, return true
if (originAsURL.protocol === 'https:' || originAsURL.protocol === 'wss:') {
return true
}
// If localhost or variants, return true
if (/^127(?:\.[0-9]+){0,2}\.[0-9]+$|^\[(?:0*:)*?:?0*1\]$/.test(originAsURL.hostname) ||
(originAsURL.hostname === 'localhost' || originAsURL.hostname.includes('localhost.')) ||
(originAsURL.hostname.endsWith('.localhost'))) {
return true
}
// If any other, return false
return false
}
}
/**
* @see https://w3c.github.io/webappsec-subresource-integrity/#does-response-match-metadatalist
* @param {Uint8Array} bytes
* @param {string} metadataList
*/
function bytesMatch (bytes, metadataList) {
// If node is not built with OpenSSL support, we cannot check
// a request's integrity, so allow it by default (the spec will
// allow requests if an invalid hash is given, as precedence).
/* istanbul ignore if: only if node is built with --without-ssl */
if (crypto === undefined) {
return true
}
// 1. Let parsedMetadata be the result of parsing metadataList.
const parsedMetadata = parseMetadata(metadataList)
// 2. If parsedMetadata is no metadata, return true.
if (parsedMetadata === 'no metadata') {
return true
}
// 3. If response is not eligible for integrity validation, return false.
// TODO
// 4. If parsedMetadata is the empty set, return true.
if (parsedMetadata.length === 0) {
return true
}
// 5. Let metadata be the result of getting the strongest
// metadata from parsedMetadata.
const strongest = getStrongestMetadata(parsedMetadata)
const metadata = filterMetadataListByAlgorithm(parsedMetadata, strongest)
// 6. For each item in metadata:
for (const item of metadata) {
// 1. Let algorithm be the alg component of item.
const algorithm = item.algo
// 2. Let expectedValue be the val component of item.
const expectedValue = item.hash
// See https://github.com/web-platform-tests/wpt/commit/e4c5cc7a5e48093220528dfdd1c4012dc3837a0e
// "be liberal with padding". This is annoying, and it's not even in the spec.
// 3. Let actualValue be the result of applying algorithm to bytes.
let actualValue = crypto.createHash(algorithm).update(bytes).digest('base64')
if (actualValue[actualValue.length - 1] === '=') {
if (actualValue[actualValue.length - 2] === '=') {
actualValue = actualValue.slice(0, -2)
} else {
actualValue = actualValue.slice(0, -1)
}
}
// 4. If actualValue is a case-sensitive match for expectedValue,
// return true.
if (compareBase64Mixed(actualValue, expectedValue)) {
return true
}
}
// 7. Return false.
return false
}
// https://w3c.github.io/webappsec-subresource-integrity/#grammardef-hash-with-options
// https://www.w3.org/TR/CSP2/#source-list-syntax
// https://www.rfc-editor.org/rfc/rfc5234#appendix-B.1
const parseHashWithOptions = /(?<algo>sha256|sha384|sha512)-((?<hash>[A-Za-z0-9+/]+|[A-Za-z0-9_-]+)={0,2}(?:\s|$)( +[!-~]*)?)?/i
/**
* @see https://w3c.github.io/webappsec-subresource-integrity/#parse-metadata
* @param {string} metadata
*/
function parseMetadata (metadata) {
// 1. Let result be the empty set.
/** @type {{ algo: string, hash: string }[]} */
const result = []
// 2. Let empty be equal to true.
let empty = true
// 3. For each token returned by splitting metadata on spaces:
for (const token of metadata.split(' ')) {
// 1. Set empty to false.
empty = false
// 2. Parse token as a hash-with-options.
const parsedToken = parseHashWithOptions.exec(token)
// 3. If token does not parse, continue to the next token.
if (
parsedToken === null ||
parsedToken.groups === undefined ||
parsedToken.groups.algo === undefined
) {
// Note: Chromium blocks the request at this point, but Firefox
// gives a warning that an invalid integrity was given. The
// correct behavior is to ignore these, and subsequently not
// check the integrity of the resource.
continue
}
// 4. Let algorithm be the hash-algo component of token.
const algorithm = parsedToken.groups.algo.toLowerCase()
// 5. If algorithm is a hash function recognized by the user
// agent, add the parsed token to result.
if (supportedHashes.includes(algorithm)) {
result.push(parsedToken.groups)
}
}
// 4. Return no metadata if empty is true, otherwise return result.
if (empty === true) {
return 'no metadata'
}
return result
}
/**
* @param {{ algo: 'sha256' | 'sha384' | 'sha512' }[]} metadataList
*/
function getStrongestMetadata (metadataList) {
// Let algorithm be the algo component of the first item in metadataList.
// Can be sha256
let algorithm = metadataList[0].algo
// If the algorithm is sha512, then it is the strongest
// and we can return immediately
if (algorithm[3] === '5') {
return algorithm
}
for (let i = 1; i < metadataList.length; ++i) {
const metadata = metadataList[i]
// If the algorithm is sha512, then it is the strongest
// and we can break the loop immediately
if (metadata.algo[3] === '5') {
algorithm = 'sha512'
break
// If the algorithm is sha384, then a potential sha256 or sha384 is ignored
} else if (algorithm[3] === '3') {
continue
// algorithm is sha256, check if algorithm is sha384 and if so, set it as
// the strongest
} else if (metadata.algo[3] === '3') {
algorithm = 'sha384'
}
}
return algorithm
}
function filterMetadataListByAlgorithm (metadataList, algorithm) {
if (metadataList.length === 1) {
return metadataList
}
let pos = 0
for (let i = 0; i < metadataList.length; ++i) {
if (metadataList[i].algo === algorithm) {
metadataList[pos++] = metadataList[i]
}
}
metadataList.length = pos
return metadataList
}
/**
* Compares two base64 strings, allowing for base64url
* in the second string.
*
* @param {string} actualValue always base64
* @param {string} expectedValue base64 or base64url
* @returns {boolean}
*/
function compareBase64Mixed (actualValue, expectedValue) {
if (actualValue.length !== expectedValue.length) {
return false
}
for (let i = 0; i < actualValue.length; ++i) {
if (actualValue[i] !== expectedValue[i]) {
if (
(actualValue[i] === '+' && expectedValue[i] === '-') ||
(actualValue[i] === '/' && expectedValue[i] === '_')
) {
continue
}
return false
}
}
return true
}
// https://w3c.github.io/webappsec-upgrade-insecure-requests/#upgrade-request
function tryUpgradeRequestToAPotentiallyTrustworthyURL (request) {
// TODO
}
/**
* @link {https://html.spec.whatwg.org/multipage/origin.html#same-origin}
* @param {URL} A
* @param {URL} B
*/
function sameOrigin (A, B) {
// 1. If A and B are the same opaque origin, then return true.
if (A.origin === B.origin && A.origin === 'null') {
return true
}
// 2. If A and B are both tuple origins and their schemes,
// hosts, and port are identical, then return true.
if (A.protocol === B.protocol && A.hostname === B.hostname && A.port === B.port) {
return true
}
// 3. Return false.
return false
}
function createDeferredPromise () {
let res
let rej
const promise = new Promise((resolve, reject) => {
res = resolve
rej = reject
})
return { promise, resolve: res, reject: rej }
}
function isAborted (fetchParams) {
return fetchParams.controller.state === 'aborted'
}
function isCancelled (fetchParams) {
return fetchParams.controller.state === 'aborted' ||
fetchParams.controller.state === 'terminated'
}
/**
* @see https://fetch.spec.whatwg.org/#concept-method-normalize
* @param {string} method
*/
function normalizeMethod (method) {
return normalizedMethodRecordsBase[method.toLowerCase()] ?? method
}
// https://infra.spec.whatwg.org/#serialize-a-javascript-value-to-a-json-string
function serializeJavascriptValueToJSONString (value) {
// 1. Let result be ? Call(%JSON.stringify%, undefined, « value »).
const result = JSON.stringify(value)
// 2. If result is undefined, then throw a TypeError.
if (result === undefined) {
throw new TypeError('Value is not JSON serializable')
}
// 3. Assert: result is a string.
assert(typeof result === 'string')
// 4. Return result.
return result
}
// https://tc39.es/ecma262/#sec-%25iteratorprototype%25-object
const esIteratorPrototype = Object.getPrototypeOf(Object.getPrototypeOf([][Symbol.iterator]()))
/**
* @see https://webidl.spec.whatwg.org/#dfn-iterator-prototype-object
* @param {string} name name of the instance
* @param {symbol} kInternalIterator
* @param {string | number} [keyIndex]
* @param {string | number} [valueIndex]
*/
function createIterator (name, kInternalIterator, keyIndex = 0, valueIndex = 1) {
class FastIterableIterator {
/** @type {any} */
#target
/** @type {'key' | 'value' | 'key+value'} */
#kind
/** @type {number} */
#index
/**
* @see https://webidl.spec.whatwg.org/#dfn-default-iterator-object
* @param {unknown} target
* @param {'key' | 'value' | 'key+value'} kind
*/
constructor (target, kind) {
this.#target = target
this.#kind = kind
this.#index = 0
}
next () {
// 1. Let interface be the interface for which the iterator prototype object exists.
// 2. Let thisValue be the this value.
// 3. Let object be ? ToObject(thisValue).
// 4. If object is a platform object, then perform a security
// check, passing:
// 5. If object is not a default iterator object for interface,
// then throw a TypeError.
if (typeof this !== 'object' || this === null || !(#target in this)) {
throw new TypeError(
`'next' called on an object that does not implement interface ${name} Iterator.`
)
}
// 6. Let index be object’s index.
// 7. Let kind be object’s kind.
// 8. Let values be object’s target's value pairs to iterate over.
const index = this.#index
const values = this.#target[kInternalIterator]
// 9. Let len be the length of values.
const len = values.length
// 10. If index is greater than or equal to len, then return
// CreateIterResultObject(undefined, true).
if (index >= len) {
return {
value: undefined,
done: true
}
}
// 11. Let pair be the entry in values at index index.
const { [keyIndex]: key, [valueIndex]: value } = values[index]
// 12. Set object’s index to index + 1.
this.#index = index + 1
// 13. Return the iterator result for pair and kind.
// https://webidl.spec.whatwg.org/#iterator-result
// 1. Let result be a value determined by the value of kind:
let result
switch (this.#kind) {
case 'key':
// 1. Let idlKey be pair’s key.
// 2. Let key be the result of converting idlKey to an
// ECMAScript value.
// 3. result is key.
result = key
break
case 'value':
// 1. Let idlValue be pair’s value.
// 2. Let value be the result of converting idlValue to
// an ECMAScript value.
// 3. result is value.
result = value
break
case 'key+value':
// 1. Let idlKey be pair’s key.
// 2. Let idlValue be pair’s value.
// 3. Let key be the result of converting idlKey to an
// ECMAScript value.
// 4. Let value be the result of converting idlValue to
// an ECMAScript value.
// 5. Let array be ! ArrayCreate(2).
// 6. Call ! CreateDataProperty(array, "0", key).
// 7. Call ! CreateDataProperty(array, "1", value).
// 8. result is array.
result = [key, value]
break
}
// 2. Return CreateIterResultObject(result, false).
return {
value: result,
done: false
}
}
}
// https://webidl.spec.whatwg.org/#dfn-iterator-prototype-object
// @ts-ignore
delete FastIterableIterator.prototype.constructor
Object.setPrototypeOf(FastIterableIterator.prototype, esIteratorPrototype)
Object.defineProperties(FastIterableIterator.prototype, {
[Symbol.toStringTag]: {
writable: false,
enumerable: false,
configurable: true,
value: `${name} Iterator`
},
next: { writable: true, enumerable: true, configurable: true }
})
/**
* @param {unknown} target
* @param {'key' | 'value' | 'key+value'} kind
* @returns {IterableIterator<any>}
*/
return function (target, kind) {
return new FastIterableIterator(target, kind)
}
}
/**
* @see https://webidl.spec.whatwg.org/#dfn-iterator-prototype-object
* @param {string} name name of the instance
* @param {any} object class
* @param {symbol} kInternalIterator
* @param {string | number} [keyIndex]
* @param {string | number} [valueIndex]
*/
function iteratorMixin (name, object, kInternalIterator, keyIndex = 0, valueIndex = 1) {
const makeIterator = createIterator(name, kInternalIterator, keyIndex, valueIndex)
const properties = {
keys: {
writable: true,
enumerable: true,
configurable: true,
value: function keys () {
webidl.brandCheck(this, object)
return makeIterator(this, 'key')
}
},
values: {
writable: true,
enumerable: true,
configurable: true,
value: function values () {
webidl.brandCheck(this, object)
return makeIterator(this, 'value')
}
},
entries: {
writable: true,
enumerable: true,
configurable: true,
value: function entries () {
webidl.brandCheck(this, object)
return makeIterator(this, 'key+value')
}
},
forEach: {
writable: true,
enumerable: true,
configurable: true,
value: function forEach (callbackfn, thisArg = globalThis) {
webidl.brandCheck(this, object)
webidl.argumentLengthCheck(arguments, 1, `${name}.forEach`)
if (typeof callbackfn !== 'function') {
throw new TypeError(
`Failed to execute 'forEach' on '${name}': parameter 1 is not of type 'Function'.`
)
}
for (const { 0: key, 1: value } of makeIterator(this, 'key+value')) {
callbackfn.call(thisArg, value, key, this)
}
}
}
}
return Object.defineProperties(object.prototype, {
...properties,
[Symbol.iterator]: {
writable: true,
enumerable: false,
configurable: true,
value: properties.entries.value
}
})
}
/**
* @see https://fetch.spec.whatwg.org/#body-fully-read
*/
async function fullyReadBody (body, processBody, processBodyError) {
// 1. If taskDestination is null, then set taskDestination to
// the result of starting a new parallel queue.
// 2. Let successSteps given a byte sequence bytes be to queue a
// fetch task to run processBody given bytes, with taskDestination.
const successSteps = processBody
// 3. Let errorSteps be to queue a fetch task to run processBodyError,
// with taskDestination.
const errorSteps = processBodyError
// 4. Let reader be the result of getting a reader for body’s stream.
// If that threw an exception, then run errorSteps with that
// exception and return.
let reader
try {
reader = body.stream.getReader()
} catch (e) {
errorSteps(e)
return
}
// 5. Read all bytes from reader, given successSteps and errorSteps.
try {
successSteps(await readAllBytes(reader))
} catch (e) {
errorSteps(e)
}
}
function isReadableStreamLike (stream) {
return stream instanceof ReadableStream || (
stream[Symbol.toStringTag] === 'ReadableStream' &&
typeof stream.tee === 'function'
)
}
/**
* @param {ReadableStreamController<Uint8Array>} controller
*/
function readableStreamClose (controller) {
try {
controller.close()
controller.byobRequest?.respond(0)
} catch (err) {
// TODO: add comment explaining why this error occurs.
if (!err.message.includes('Controller is already closed') && !err.message.includes('ReadableStream is already closed')) {
throw err
}
}
}
const invalidIsomorphicEncodeValueRegex = /[^\x00-\xFF]/ // eslint-disable-line
/**
* @see https://infra.spec.whatwg.org/#isomorphic-encode
* @param {string} input
*/
function isomorphicEncode (input) {
// 1. Assert: input contains no code points greater than U+00FF.
assert(!invalidIsomorphicEncodeValueRegex.test(input))
// 2. Return a byte sequence whose length is equal to input’s code
// point length and whose bytes have the same values as the
// values of input’s code points, in the same order
return input
}
/**
* @see https://streams.spec.whatwg.org/#readablestreamdefaultreader-read-all-bytes
* @see https://streams.spec.whatwg.org/#read-loop
* @param {ReadableStreamDefaultReader} reader
*/
async function readAllBytes (reader) {
const bytes = []
let byteLength = 0
while (true) {
const { done, value: chunk } = await reader.read()
if (done) {
// 1. Call successSteps with bytes.
return Buffer.concat(bytes, byteLength)
}
// 1. If chunk is not a Uint8Array object, call failureSteps
// with a TypeError and abort these steps.
if (!isUint8Array(chunk)) {
throw new TypeError('Received non-Uint8Array chunk')
}
// 2. Append the bytes represented by chunk to bytes.
bytes.push(chunk)
byteLength += chunk.length
// 3. Read-loop given reader, bytes, successSteps, and failureSteps.
}
}
/**
* @see https://fetch.spec.whatwg.org/#is-local
* @param {URL} url
*/
function urlIsLocal (url) {
assert('protocol' in url) // ensure it's a url object
const protocol = url.protocol
return protocol === 'about:' || protocol === 'blob:' || protocol === 'data:'
}
/**
* @param {string|URL} url
* @returns {boolean}
*/
function urlHasHttpsScheme (url) {
return (
(
typeof url === 'string' &&
url[5] === ':' &&
url[0] === 'h' &&
url[1] === 't' &&
url[2] === 't' &&
url[3] === 'p' &&
url[4] === 's'
) ||
url.protocol === 'https:'
)
}
/**
* @see https://fetch.spec.whatwg.org/#http-scheme
* @param {URL} url
*/
function urlIsHttpHttpsScheme (url) {
assert('protocol' in url) // ensure it's a url object
const protocol = url.protocol
return protocol === 'http:' || protocol === 'https:'
}
/**
* @see https://fetch.spec.whatwg.org/#simple-range-header-value
* @param {string} value
* @param {boolean} allowWhitespace
*/
function simpleRangeHeaderValue (value, allowWhitespace) {
// 1. Let data be the isomorphic decoding of value.
// Note: isomorphic decoding takes a sequence of bytes (ie. a Uint8Array) and turns it into a string,
// nothing more. We obviously don't need to do that if value is a string already.
const data = value
// 2. If data does not start with "bytes", then return failure.
if (!data.startsWith('bytes')) {
return 'failure'
}
// 3. Let position be a position variable for data, initially pointing at the 5th code point of data.
const position = { position: 5 }
// 4. If allowWhitespace is true, collect a sequence of code points that are HTTP tab or space,
// from data given position.
if (allowWhitespace) {
collectASequenceOfCodePoints(
(char) => char === '\t' || char === ' ',
data,
position
)
}
// 5. If the code point at position within data is not U+003D (=), then return failure.
if (data.charCodeAt(position.position) !== 0x3D) {
return 'failure'
}
// 6. Advance position by 1.
position.position++
// 7. If allowWhitespace is true, collect a sequence of code points that are HTTP tab or space, from
// data given position.
if (allowWhitespace) {
collectASequenceOfCodePoints(
(char) => char === '\t' || char === ' ',
data,
position
)
}
// 8. Let rangeStart be the result of collecting a sequence of code points that are ASCII digits,
// from data given position.
const rangeStart = collectASequenceOfCodePoints(
(char) => {
const code = char.charCodeAt(0)
return code >= 0x30 && code <= 0x39
},
data,
position
)
// 9. Let rangeStartValue be rangeStart, interpreted as decimal number, if rangeStart is not the
// empty string; otherwise null.
const rangeStartValue = rangeStart.length ? Number(rangeStart) : null
// 10. If allowWhitespace is true, collect a sequence of code points that are HTTP tab or space,
// from data given position.
if (allowWhitespace) {
collectASequenceOfCodePoints(
(char) => char === '\t' || char === ' ',
data,
position
)
}
// 11. If the code point at position within data is not U+002D (-), then return failure.
if (data.charCodeAt(position.position) !== 0x2D) {
return 'failure'
}
// 12. Advance position by 1.
position.position++
// 13. If allowWhitespace is true, collect a sequence of code points that are HTTP tab
// or space, from data given position.
// Note from Khafra: its the same step as in #8 again lol
if (allowWhitespace) {
collectASequenceOfCodePoints(
(char) => char === '\t' || char === ' ',
data,
position
)
}
// 14. Let rangeEnd be the result of collecting a sequence of code points that are
// ASCII digits, from data given position.
// Note from Khafra: you wouldn't guess it, but this is also the same step as #8
const rangeEnd = collectASequenceOfCodePoints(
(char) => {
const code = char.charCodeAt(0)
return code >= 0x30 && code <= 0x39
},
data,
position
)
// 15. Let rangeEndValue be rangeEnd, interpreted as decimal number, if rangeEnd
// is not the empty string; otherwise null.
// Note from Khafra: THE SAME STEP, AGAIN!!!
// Note: why interpret as a decimal if we only collect ascii digits?
const rangeEndValue = rangeEnd.length ? Number(rangeEnd) : null
// 16. If position is not past the end of data, then return failure.
if (position.position < data.length) {
return 'failure'
}
// 17. If rangeEndValue and rangeStartValue are null, then return failure.
if (rangeEndValue === null && rangeStartValue === null) {
return 'failure'
}
// 18. If rangeStartValue and rangeEndValue are numbers, and rangeStartValue is
// greater than rangeEndValue, then return failure.
// Note: ... when can they not be numbers?
if (rangeStartValue > rangeEndValue) {
return 'failure'
}
// 19. Return (rangeStartValue, rangeEndValue).
return { rangeStartValue, rangeEndValue }
}
/**
* @see https://fetch.spec.whatwg.org/#build-a-content-range
* @param {number} rangeStart
* @param {number} rangeEnd
* @param {number} fullLength
*/
function buildContentRange (rangeStart, rangeEnd, fullLength) {
// 1. Let contentRange be `bytes `.
let contentRange = 'bytes '
// 2. Append rangeStart, serialized and isomorphic encoded, to contentRange.
contentRange += isomorphicEncode(`${rangeStart}`)
// 3. Append 0x2D (-) to contentRange.
contentRange += '-'
// 4. Append rangeEnd, serialized and isomorphic encoded to contentRange.
contentRange += isomorphicEncode(`${rangeEnd}`)
// 5. Append 0x2F (/) to contentRange.
contentRange += '/'
// 6. Append fullLength, serialized and isomorphic encoded to contentRange.
contentRange += isomorphicEncode(`${fullLength}`)
// 7. Return contentRange.
return contentRange
}
// A Stream, which pipes the response to zlib.createInflate() or
// zlib.createInflateRaw() depending on the first byte of the Buffer.
// If the lower byte of the first byte is 0x08, then the stream is
// interpreted as a zlib stream, otherwise it's interpreted as a
// raw deflate stream.
class InflateStream extends Transform {
_transform (chunk, encoding, callback) {
if (!this._inflateStream) {
if (chunk.length === 0) {
callback()
return
}
this._inflateStream = (chunk[0] & 0x0F) === 0x08
? zlib.createInflate()
: zlib.createInflateRaw()
this._inflateStream.on('data', this.push.bind(this))
this._inflateStream.on('end', () => this.push(null))
this._inflateStream.on('error', (err) => this.destroy(err))
}
this._inflateStream.write(chunk, encoding, callback)
}
_final (callback) {
if (this._inflateStream) {
this._inflateStream.end()
this._inflateStream = null
}
callback()
}
}
function createInflate () {
return new InflateStream()
}
/**
* @see https://fetch.spec.whatwg.org/#concept-header-extract-mime-type
* @param {import('./headers').HeadersList} headers
*/
function extractMimeType (headers) {
// 1. Let charset be null.
let charset = null
// 2. Let essence be null.
let essence = null
// 3. Let mimeType be null.
let mimeType = null
// 4. Let values be the result of getting, decoding, and splitting `Content-Type` from headers.
const values = getDecodeSplit('content-type', headers)
// 5. If values is null, then return failure.
if (values === null) {
return 'failure'
}
// 6. For each value of values:
for (const value of values) {
// 6.1. Let temporaryMimeType be the result of parsing value.
const temporaryMimeType = parseMIMEType(value)
// 6.2. If temporaryMimeType is failure or its essence is "*/*", then continue.
if (temporaryMimeType === 'failure' || temporaryMimeType.essence === '*/*') {
continue
}
// 6.3. Set mimeType to temporaryMimeType.
mimeType = temporaryMimeType
// 6.4. If mimeType’s essence is not essence, then:
if (mimeType.essence !== essence) {
// 6.4.1. Set charset to null.
charset = null
// 6.4.2. If mimeType’s parameters["charset"] exists, then set charset to
// mimeType’s parameters["charset"].
if (mimeType.parameters.has('charset')) {
charset = mimeType.parameters.get('charset')
}
// 6.4.3. Set essence to mimeType’s essence.
essence = mimeType.essence
} else if (!mimeType.parameters.has('charset') && charset !== null) {
// 6.5. Otherwise, if mimeType’s parameters["charset"] does not exist, and
// charset is non-null, set mimeType’s parameters["charset"] to charset.
mimeType.parameters.set('charset', charset)
}
}
// 7. If mimeType is null, then return failure.
if (mimeType == null) {
return 'failure'
}
// 8. Return mimeType.
return mimeType
}
/**
* @see https://fetch.spec.whatwg.org/#header-value-get-decode-and-split
* @param {string|null} value
*/
function gettingDecodingSplitting (value) {
// 1. Let input be the result of isomorphic decoding value.
const input = value
// 2. Let position be a position variable for input, initially pointing at the start of input.
const position = { position: 0 }
// 3. Let values be a list of strings, initially empty.
const values = []
// 4. Let temporaryValue be the empty string.
let temporaryValue = ''
// 5. While position is not past the end of input:
while (position.position < input.length) {
// 5.1. Append the result of collecting a sequence of code points that are not U+0022 (")
// or U+002C (,) from input, given position, to temporaryValue.
temporaryValue += collectASequenceOfCodePoints(
(char) => char !== '"' && char !== ',',
input,
position
)
// 5.2. If position is not past the end of input, then:
if (position.position < input.length) {
// 5.2.1. If the code point at position within input is U+0022 ("), then:
if (input.charCodeAt(position.position) === 0x22) {
// 5.2.1.1. Append the result of collecting an HTTP quoted string from input, given position, to temporaryValue.
temporaryValue += collectAnHTTPQuotedString(
input,
position
)
// 5.2.1.2. If position is not past the end of input, then continue.
if (position.position < input.length) {
continue
}
} else {
// 5.2.2. Otherwise:
// 5.2.2.1. Assert: the code point at position within input is U+002C (,).
assert(input.charCodeAt(position.position) === 0x2C)
// 5.2.2.2. Advance position by 1.
position.position++
}
}
// 5.3. Remove all HTTP tab or space from the start and end of temporaryValue.
temporaryValue = removeChars(temporaryValue, true, true, (char) => char === 0x9 || char === 0x20)
// 5.4. Append temporaryValue to values.
values.push(temporaryValue)
// 5.6. Set temporaryValue to the empty string.
temporaryValue = ''
}
// 6. Return values.
return values
}
/**
* @see https://fetch.spec.whatwg.org/#concept-header-list-get-decode-split
* @param {string} name lowercase header name
* @param {import('./headers').HeadersList} list
*/
function getDecodeSplit (name, list) {
// 1. Let value be the result of getting name from list.
const value = list.get(name, true)
// 2. If value is null, then return null.
if (value === null) {
return null
}
// 3. Return the result of getting, decoding, and splitting value.
return gettingDecodingSplitting(value)
}
const textDecoder = new TextDecoder()
/**
* @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-8’s
// decoder, ioQueue, output, and "replacement".
const output = textDecoder.decode(buffer)
// 4. Return output.
return output
}
class EnvironmentSettingsObjectBase {
get baseUrl () {
return getGlobalOrigin()
}
get origin () {
return this.baseUrl?.origin
}
policyContainer = makePolicyContainer()
}
class EnvironmentSettingsObject {
settingsObject = new EnvironmentSettingsObjectBase()
}
const environmentSettingsObject = new EnvironmentSettingsObject()
module.exports = {
isAborted,
isCancelled,
isValidEncodedURL,
createDeferredPromise,
ReadableStreamFrom,
tryUpgradeRequestToAPotentiallyTrustworthyURL,
clampAndCoarsenConnectionTimingInfo,
coarsenedSharedCurrentTime,
determineRequestsReferrer,
makePolicyContainer,
clonePolicyContainer,
appendFetchMetadata,
appendRequestOriginHeader,
TAOCheck,
corsCheck,
crossOriginResourcePolicyCheck,
createOpaqueTimingInfo,
setRequestReferrerPolicyOnRedirect,
isValidHTTPToken,
requestBadPort,
requestCurrentURL,
responseURL,
responseLocationURL,
isBlobLike,
isURLPotentiallyTrustworthy,
isValidReasonPhrase,
sameOrigin,
normalizeMethod,
serializeJavascriptValueToJSONString,
iteratorMixin,
createIterator,
isValidHeaderName,
isValidHeaderValue,
isErrorLike,
fullyReadBody,
bytesMatch,
isReadableStreamLike,
readableStreamClose,
isomorphicEncode,
urlIsLocal,
urlHasHttpsScheme,
urlIsHttpHttpsScheme,
readAllBytes,
simpleRangeHeaderValue,
buildContentRange,
parseMetadata,
createInflate,
extractMimeType,
getDecodeSplit,
utf8DecodeBytes,
environmentSettingsObject
}