diff options
Diffstat (limited to 'g4f/Provider/npm/node_modules/undici/lib/fetch/util.js')
| -rw-r--r-- | g4f/Provider/npm/node_modules/undici/lib/fetch/util.js | 1046 |
1 files changed, 0 insertions, 1046 deletions
diff --git a/g4f/Provider/npm/node_modules/undici/lib/fetch/util.js b/g4f/Provider/npm/node_modules/undici/lib/fetch/util.js deleted file mode 100644 index 033fa206..00000000 --- a/g4f/Provider/npm/node_modules/undici/lib/fetch/util.js +++ /dev/null @@ -1,1046 +0,0 @@ -'use strict' - -const { redirectStatusSet, referrerPolicySet: referrerPolicyTokens, badPortsSet } = require('./constants') -const { getGlobalOrigin } = require('./global') -const { performance } = require('perf_hooks') -const { isBlobLike, toUSVString, ReadableStreamFrom } = require('../core/util') -const assert = require('assert') -const { isUint8Array } = require('util/types') - -// https://nodejs.org/api/crypto.html#determining-if-crypto-support-is-unavailable -/** @type {import('crypto')|undefined} */ -let crypto - -try { - crypto = require('crypto') -} 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') - - // 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)) { - 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 -} - -/** @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 -} - -function isTokenChar (c) { - return !( - c >= 0x7f || - c <= 0x20 || - c === '(' || - c === ')' || - c === '<' || - c === '>' || - c === '@' || - c === ',' || - c === ';' || - c === ':' || - c === '\\' || - c === '"' || - c === '/' || - c === '[' || - c === ']' || - c === '?' || - c === '=' || - c === '{' || - c === '}' - ) -} - -// See RFC 7230, Section 3.2.6. -// https://github.com/chromium/chromium/blob/d7da0240cae77824d1eda25745c4022757499131/third_party/blink/renderer/platform/network/http_parsers.cc#L321 -function isValidHTTPToken (characters) { - if (!characters || typeof characters !== 'string') { - return false - } - for (let i = 0; i < characters.length; ++i) { - const c = characters.charCodeAt(i) - if (c > 0x7f || !isTokenChar(c)) { - return false - } - } - return true -} - -// https://fetch.spec.whatwg.org/#header-name -// https://github.com/chromium/chromium/blob/b3d37e6f94f87d59e44662d6078f6a12de845d17/net/http/http_util.cc#L342 -function isValidHeaderName (potentialValue) { - if (potentialValue.length === 0) { - return false - } - - return isValidHTTPToken(potentialValue) -} - -/** - * @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. - if ( - potentialValue.startsWith('\t') || - potentialValue.startsWith(' ') || - potentialValue.endsWith('\t') || - potentialValue.endsWith(' ') - ) { - return false - } - - if ( - potentialValue.includes('\0') || - potentialValue.includes('\r') || - potentialValue.includes('\n') - ) { - return false - } - - return true -} - -// 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') ?? '').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) - - // 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. - let serializedOrigin = request.origin - - // 2. If request’s response tainting is "cors" or request’s mode is "websocket", then append (`Origin`, serializedOrigin) to request’s header list. - if (request.responseTainting === 'cors' || request.mode === 'websocket') { - if (serializedOrigin) { - request.headersList.append('origin', serializedOrigin) - } - - // 3. Otherwise, if request’s method is neither `GET` nor `HEAD`, then: - } 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. - } - - if (serializedOrigin) { - // 2. Append (`Origin`, serializedOrigin) to request’s header list. - request.headersList.append('origin', serializedOrigin) - } - } -} - -function coarsenedSharedCurrentTime (crossOriginIsolatedCapability) { - // TODO - return performance.now() -} - -// 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) - - // 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 parsedMetadata is the empty set, return true. - if (parsedMetadata.length === 0) { - return true - } - - // 4. Let metadata be the result of getting the strongest - // metadata from parsedMetadata. - const list = parsedMetadata.sort((c, d) => d.algo.localeCompare(c.algo)) - // get the strongest algorithm - const strongest = list[0].algo - // get all entries that use the strongest algorithm; ignore weaker - const metadata = list.filter((item) => item.algo === strongest) - - // 5. 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. - let 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. - - if (expectedValue.endsWith('==')) { - expectedValue = expectedValue.slice(0, -2) - } - - // 3. Let actualValue be the result of applying algorithm to bytes. - let actualValue = crypto.createHash(algorithm).update(bytes).digest('base64') - - if (actualValue.endsWith('==')) { - actualValue = actualValue.slice(0, -2) - } - - // 4. If actualValue is a case-sensitive match for expectedValue, - // return true. - if (actualValue === expectedValue) { - return true - } - - let actualBase64URL = crypto.createHash(algorithm).update(bytes).digest('base64url') - - if (actualBase64URL.endsWith('==')) { - actualBase64URL = actualBase64URL.slice(0, -2) - } - - if (actualBase64URL === expectedValue) { - return true - } - } - - // 6. 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-z0-9+/]{1}.*={0,2}))( +[\x21-\x7e]?)?/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 - - const supportedHashes = crypto.getHashes() - - // 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) { - // 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 - - // 5. If algorithm is a hash function recognized by the user - // agent, add the parsed token to result. - if (supportedHashes.includes(algorithm.toLowerCase())) { - result.push(parsedToken.groups) - } - } - - // 4. Return no metadata if empty is true, otherwise return result. - if (empty === true) { - return 'no metadata' - } - - return result -} - -// 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' -} - -// https://fetch.spec.whatwg.org/#concept-method-normalize -function normalizeMethod (method) { - return /^(DELETE|GET|HEAD|OPTIONS|POST|PUT)$/i.test(method) - ? method.toUpperCase() - : 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 {() => unknown[]} iterator - * @param {string} name name of the instance - * @param {'key'|'value'|'key+value'} kind - */ -function makeIterator (iterator, name, kind) { - const object = { - index: 0, - kind, - target: iterator - } - - const i = { - 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 (Object.getPrototypeOf(this) !== i) { - throw new TypeError( - `'next' called on an object that does not implement interface ${name} Iterator.` - ) - } - - // 6. Let index be object’s index. - // 7. Let kind be object’s kind. - // 8. Let values be object’s target's value pairs to iterate over. - const { index, kind, target } = object - const values = target() - - // 9. Let len be the length of values. - const len = values.length - - // 10. If index is greater than or equal to len, then return - // CreateIterResultObject(undefined, true). - if (index >= len) { - return { value: undefined, done: true } - } - - // 11. Let pair be the entry in values at index index. - const pair = values[index] - - // 12. Set object’s index to index + 1. - object.index = index + 1 - - // 13. Return the iterator result for pair and kind. - return iteratorResult(pair, kind) - }, - // The class string of an iterator prototype object for a given interface is the - // result of concatenating the identifier of the interface and the string " Iterator". - [Symbol.toStringTag]: `${name} Iterator` - } - - // The [[Prototype]] internal slot of an iterator prototype object must be %IteratorPrototype%. - Object.setPrototypeOf(i, esIteratorPrototype) - // esIteratorPrototype needs to be the prototype of i - // which is the prototype of an empty object. Yes, it's confusing. - return Object.setPrototypeOf({}, i) -} - -// https://webidl.spec.whatwg.org/#iterator-result -function iteratorResult (pair, kind) { - let result - - // 1. Let result be a value determined by the value of kind: - switch (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 = pair[0] - 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 = pair[1] - 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 = pair - break - } - } - - // 2. Return CreateIterResultObject(result, false). - return { value: result, done: false } -} - -/** - * @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 { - const result = await readAllBytes(reader) - successSteps(result) - } catch (e) { - errorSteps(e) - } -} - -/** @type {ReadableStream} */ -let ReadableStream = globalThis.ReadableStream - -function isReadableStreamLike (stream) { - if (!ReadableStream) { - ReadableStream = require('stream/web').ReadableStream - } - - return stream instanceof ReadableStream || ( - stream[Symbol.toStringTag] === 'ReadableStream' && - typeof stream.tee === 'function' - ) -} - -const MAXIMUM_ARGUMENT_LENGTH = 65535 - -/** - * @see https://infra.spec.whatwg.org/#isomorphic-decode - * @param {number[]|Uint8Array} input - */ -function isomorphicDecode (input) { - // 1. To isomorphic decode a byte sequence input, return a string whose code point - // length is equal to input’s length and whose code points have the same values - // as the values of input’s bytes, in the same order. - - if (input.length < MAXIMUM_ARGUMENT_LENGTH) { - return String.fromCharCode(...input) - } - - return input.reduce((previous, current) => previous + String.fromCharCode(current), '') -} - -/** - * @param {ReadableStreamController<Uint8Array>} controller - */ -function readableStreamClose (controller) { - try { - controller.close() - } catch (err) { - // TODO: add comment explaining why this error occurs. - if (!err.message.includes('Controller is already closed')) { - throw err - } - } -} - -/** - * @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. - for (let i = 0; i < input.length; i++) { - assert(input.charCodeAt(i) <= 0xFF) - } - - // 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 - */ -function urlHasHttpsScheme (url) { - if (typeof url === 'string') { - return url.startsWith('https:') - } - - return 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:' -} - -/** - * Fetch supports node >= 16.8.0, but Object.hasOwn was added in v16.9.0. - */ -const hasOwn = Object.hasOwn || ((dict, key) => Object.prototype.hasOwnProperty.call(dict, key)) - -module.exports = { - isAborted, - isCancelled, - createDeferredPromise, - ReadableStreamFrom, - toUSVString, - tryUpgradeRequestToAPotentiallyTrustworthyURL, - coarsenedSharedCurrentTime, - determineRequestsReferrer, - makePolicyContainer, - clonePolicyContainer, - appendFetchMetadata, - appendRequestOriginHeader, - TAOCheck, - corsCheck, - crossOriginResourcePolicyCheck, - createOpaqueTimingInfo, - setRequestReferrerPolicyOnRedirect, - isValidHTTPToken, - requestBadPort, - requestCurrentURL, - responseURL, - responseLocationURL, - isBlobLike, - isURLPotentiallyTrustworthy, - isValidReasonPhrase, - sameOrigin, - normalizeMethod, - serializeJavascriptValueToJSONString, - makeIterator, - isValidHeaderName, - isValidHeaderValue, - hasOwn, - isErrorLike, - fullyReadBody, - bytesMatch, - isReadableStreamLike, - readableStreamClose, - isomorphicEncode, - isomorphicDecode, - urlIsLocal, - urlHasHttpsScheme, - urlIsHttpHttpsScheme, - readAllBytes -} |