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465 lines
13 KiB
JavaScript
465 lines
13 KiB
JavaScript
// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
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// @ts-check
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/// <reference path="../webidl/internal.d.ts" />
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/// <reference path="../web/internal.d.ts" />
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/// <reference path="../url/internal.d.ts" />
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/// <reference path="../web/lib.deno_web.d.ts" />
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/// <reference path="./internal.d.ts" />
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/// <reference path="../web/06_streams_types.d.ts" />
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/// <reference path="./lib.deno_fetch.d.ts" />
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/// <reference lib="esnext" />
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"use strict";
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((window) => {
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const { isProxy } = Deno.core;
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const webidl = window.__bootstrap.webidl;
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const consoleInternal = window.__bootstrap.console;
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const { HTTP_TAB_OR_SPACE, regexMatcher } = window.__bootstrap.infra;
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const { extractBody, mixinBody } = window.__bootstrap.fetchBody;
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const { getLocationHref } = window.__bootstrap.location;
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const mimesniff = window.__bootstrap.mimesniff;
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const { URL } = window.__bootstrap.url;
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const {
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getDecodeSplitHeader,
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headerListFromHeaders,
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headersFromHeaderList,
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guardFromHeaders,
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fillHeaders,
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} = window.__bootstrap.headers;
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const {
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ArrayPrototypeMap,
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ArrayPrototypePush,
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MapPrototypeHas,
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MapPrototypeGet,
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MapPrototypeSet,
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RangeError,
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RegExp,
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RegExpPrototypeTest,
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Symbol,
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SymbolFor,
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TypeError,
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} = window.__bootstrap.primordials;
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const VCHAR = ["\x21-\x7E"];
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const OBS_TEXT = ["\x80-\xFF"];
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const REASON_PHRASE = [...HTTP_TAB_OR_SPACE, ...VCHAR, ...OBS_TEXT];
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const REASON_PHRASE_MATCHER = regexMatcher(REASON_PHRASE);
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const REASON_PHRASE_RE = new RegExp(`^[${REASON_PHRASE_MATCHER}]*$`);
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const _response = Symbol("response");
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const _headers = Symbol("headers");
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const _mimeType = Symbol("mime type");
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const _body = Symbol("body");
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/**
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* @typedef InnerResponse
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* @property {"basic" | "cors" | "default" | "error" | "opaque" | "opaqueredirect"} type
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* @property {() => string | null} url
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* @property {string[]} urlList
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* @property {number} status
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* @property {string} statusMessage
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* @property {[string, string][]} headerList
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* @property {null | typeof __window.bootstrap.fetchBody.InnerBody} body
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* @property {boolean} aborted
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* @property {string} [error]
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*/
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/**
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* @param {number} status
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* @returns {boolean}
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*/
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function nullBodyStatus(status) {
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return status === 101 || status === 204 || status === 205 || status === 304;
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}
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/**
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* @param {number} status
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* @returns {boolean}
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*/
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function redirectStatus(status) {
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return status === 301 || status === 302 || status === 303 ||
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status === 307 || status === 308;
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}
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/**
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* https://fetch.spec.whatwg.org/#concept-response-clone
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* @param {InnerResponse} response
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* @returns {InnerResponse}
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*/
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function cloneInnerResponse(response) {
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const urlList = [...response.urlList];
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const headerList = [
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...ArrayPrototypeMap(response.headerList, (x) => [x[0], x[1]]),
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];
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let body = null;
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if (response.body !== null) {
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body = response.body.clone();
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}
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return {
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type: response.type,
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body,
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headerList,
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urlList,
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status: response.status,
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statusMessage: response.statusMessage,
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aborted: response.aborted,
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url() {
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if (this.urlList.length == 0) return null;
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return this.urlList[this.urlList.length - 1];
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},
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};
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}
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/**
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* @returns {InnerResponse}
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*/
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function newInnerResponse(status = 200, statusMessage = "") {
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return {
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type: "default",
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body: null,
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headerList: [],
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urlList: [],
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status,
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statusMessage,
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aborted: false,
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url() {
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if (this.urlList.length == 0) return null;
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return this.urlList[this.urlList.length - 1];
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},
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};
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}
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/**
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* @param {string} error
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* @returns {InnerResponse}
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*/
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function networkError(error) {
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const resp = newInnerResponse(0);
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resp.type = "error";
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resp.error = error;
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return resp;
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}
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/**
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* @returns {InnerResponse}
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*/
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function abortedNetworkError() {
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const resp = networkError("aborted");
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resp.aborted = true;
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return resp;
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}
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class Response {
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get [_mimeType]() {
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let charset = null;
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let essence = null;
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let mimeType = null;
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const headerList = headerListFromHeaders(this[_headers]);
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const values = getDecodeSplitHeader(headerList, "content-type");
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if (values === null) return null;
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for (const value of values) {
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const temporaryMimeType = mimesniff.parseMimeType(value);
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if (
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temporaryMimeType === null ||
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mimesniff.essence(temporaryMimeType) == "*/*"
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) {
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continue;
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}
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mimeType = temporaryMimeType;
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if (mimesniff.essence(mimeType) !== essence) {
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charset = null;
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const newCharset = MapPrototypeGet(mimeType.parameters, "charset");
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if (newCharset !== undefined) {
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charset = newCharset;
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}
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essence = mimesniff.essence(mimeType);
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} else {
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if (
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MapPrototypeHas(mimeType.parameters, "charset") === null &&
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charset !== null
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) {
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MapPrototypeSet(mimeType.parameters, "charset", charset);
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}
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}
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}
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if (mimeType === null) return null;
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return mimeType;
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}
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get [_body]() {
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return this[_response].body;
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}
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/**
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* @returns {Response}
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*/
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static error() {
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const inner = newInnerResponse(0);
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inner.type = "error";
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const response = webidl.createBranded(Response);
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response[_response] = inner;
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response[_headers] = headersFromHeaderList(
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response[_response].headerList,
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"immutable",
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);
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return response;
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}
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/**
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* @param {string} url
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* @param {number} status
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* @returns {Response}
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*/
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static redirect(url, status = 302) {
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const prefix = "Failed to call 'Response.redirect'";
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url = webidl.converters["USVString"](url, {
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prefix,
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context: "Argument 1",
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});
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status = webidl.converters["unsigned short"](status, {
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prefix,
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context: "Argument 2",
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});
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const baseURL = getLocationHref();
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const parsedURL = new URL(url, baseURL);
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if (!redirectStatus(status)) {
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throw new RangeError("Invalid redirect status code.");
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}
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const inner = newInnerResponse(status);
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inner.type = "default";
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ArrayPrototypePush(inner.headerList, ["location", parsedURL.href]);
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const response = webidl.createBranded(Response);
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response[_response] = inner;
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response[_headers] = headersFromHeaderList(
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response[_response].headerList,
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"immutable",
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);
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return response;
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}
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/**
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* @param {BodyInit | null} body
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* @param {ResponseInit} init
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*/
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constructor(body = null, init = {}) {
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const prefix = "Failed to construct 'Response'";
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body = webidl.converters["BodyInit_DOMString?"](body, {
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prefix,
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context: "Argument 1",
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});
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init = webidl.converters["ResponseInit_fast"](init, {
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prefix,
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context: "Argument 2",
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});
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if (init.status < 200 || init.status > 599) {
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throw new RangeError(
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`The status provided (${init.status}) is outside the range [200, 599].`,
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);
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}
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if (
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init.statusText &&
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!RegExpPrototypeTest(REASON_PHRASE_RE, init.statusText)
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) {
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throw new TypeError("Status text is not valid.");
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}
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this[webidl.brand] = webidl.brand;
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const response = newInnerResponse(init.status, init.statusText);
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/** @type {InnerResponse} */
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this[_response] = response;
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/** @type {Headers} */
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this[_headers] = headersFromHeaderList(response.headerList, "response");
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if (init.headers) {
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fillHeaders(this[_headers], init.headers);
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}
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if (body !== null) {
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if (nullBodyStatus(response.status)) {
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throw new TypeError(
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"Response with null body status cannot have body",
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);
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}
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const res = extractBody(body);
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response.body = res.body;
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if (res.contentType !== null && !this[_headers].has("content-type")) {
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this[_headers].append("Content-Type", res.contentType);
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}
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}
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}
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/**
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* @returns {"basic" | "cors" | "default" | "error" | "opaque" | "opaqueredirect"}
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*/
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get type() {
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webidl.assertBranded(this, Response);
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return this[_response].type;
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}
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/**
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* @returns {string}
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*/
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get url() {
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webidl.assertBranded(this, Response);
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const url = this[_response].url();
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if (url === null) return "";
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const newUrl = new URL(url);
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newUrl.hash = "";
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return newUrl.href;
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}
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/**
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* @returns {boolean}
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*/
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get redirected() {
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webidl.assertBranded(this, Response);
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return this[_response].urlList.length > 1;
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}
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/**
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* @returns {number}
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*/
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get status() {
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webidl.assertBranded(this, Response);
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return this[_response].status;
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}
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/**
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* @returns {boolean}
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*/
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get ok() {
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webidl.assertBranded(this, Response);
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const status = this[_response].status;
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return status >= 200 && status <= 299;
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}
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/**
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* @returns {string}
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*/
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get statusText() {
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webidl.assertBranded(this, Response);
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return this[_response].statusMessage;
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}
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/**
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* @returns {Headers}
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*/
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get headers() {
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webidl.assertBranded(this, Response);
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return this[_headers];
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}
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/**
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* @returns {Response}
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*/
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clone() {
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webidl.assertBranded(this, Response);
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if (this[_body] && this[_body].unusable()) {
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throw new TypeError("Body is unusable.");
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}
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const second = webidl.createBranded(Response);
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const newRes = cloneInnerResponse(this[_response]);
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second[_response] = newRes;
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second[_headers] = headersFromHeaderList(
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newRes.headerList,
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guardFromHeaders(this[_headers]),
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);
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return second;
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}
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[SymbolFor("Deno.customInspect")](inspect) {
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return inspect(consoleInternal.createFilteredInspectProxy({
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object: this,
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evaluate: this instanceof Response,
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keys: [
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"body",
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"bodyUsed",
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"headers",
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"ok",
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"redirected",
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"status",
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"statusText",
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"url",
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],
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}));
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}
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}
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mixinBody(Response, _body, _mimeType);
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webidl.configurePrototype(Response);
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webidl.converters["Response"] = webidl.createInterfaceConverter(
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"Response",
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Response,
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);
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webidl.converters["ResponseInit"] = webidl.createDictionaryConverter(
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"ResponseInit",
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[{
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key: "status",
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defaultValue: 200,
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converter: webidl.converters["unsigned short"],
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}, {
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key: "statusText",
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defaultValue: "",
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converter: webidl.converters["ByteString"],
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}, {
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key: "headers",
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converter: webidl.converters["HeadersInit"],
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}],
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);
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webidl.converters["ResponseInit_fast"] = function (init, opts) {
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if (init === undefined || init === null) {
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return { status: 200, statusText: "", headers: undefined };
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}
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// Fast path, if not a proxy
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if (typeof init === "object" && !isProxy(init)) {
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// Not a proxy fast path
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const status = init.status !== undefined
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? webidl.converters["unsigned short"](init.status)
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: 200;
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const statusText = init.statusText !== undefined
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? webidl.converters["ByteString"](init.statusText)
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: "";
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const headers = init.headers !== undefined
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? webidl.converters["HeadersInit"](init.headers)
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: undefined;
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return { status, statusText, headers };
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}
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// Slow default path
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return webidl.converters["ResponseInit"](init, opts);
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};
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/**
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* @param {Response} response
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* @returns {InnerResponse}
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*/
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function toInnerResponse(response) {
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return response[_response];
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}
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/**
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* @param {InnerResponse} inner
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* @param {"request" | "immutable" | "request-no-cors" | "response" | "none"} guard
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* @returns {Response}
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*/
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function fromInnerResponse(inner, guard) {
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const response = webidl.createBranded(Response);
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response[_response] = inner;
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response[_headers] = headersFromHeaderList(inner.headerList, guard);
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return response;
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}
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window.__bootstrap.fetch ??= {};
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window.__bootstrap.fetch.Response = Response;
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window.__bootstrap.fetch.newInnerResponse = newInnerResponse;
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window.__bootstrap.fetch.toInnerResponse = toInnerResponse;
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window.__bootstrap.fetch.fromInnerResponse = fromInnerResponse;
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window.__bootstrap.fetch.redirectStatus = redirectStatus;
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window.__bootstrap.fetch.nullBodyStatus = nullBodyStatus;
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window.__bootstrap.fetch.networkError = networkError;
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window.__bootstrap.fetch.abortedNetworkError = abortedNetworkError;
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})(globalThis);
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