mirror of
https://github.com/denoland/deno.git
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502 lines
14 KiB
JavaScript
502 lines
14 KiB
JavaScript
// Copyright 2018-2022 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="../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 core = window.Deno.core;
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const webidl = globalThis.__bootstrap.webidl;
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const { Blob, File } = globalThis.__bootstrap.file;
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const {
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ArrayPrototypeMap,
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ArrayPrototypePush,
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ArrayPrototypeSlice,
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ArrayPrototypeSplice,
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ArrayPrototypeFilter,
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ArrayPrototypeForEach,
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Map,
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MapPrototypeGet,
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MapPrototypeSet,
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MathRandom,
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Symbol,
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StringFromCharCode,
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StringPrototypeTrim,
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StringPrototypeSlice,
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StringPrototypeSplit,
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StringPrototypeReplace,
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StringPrototypeIndexOf,
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StringPrototypePadStart,
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StringPrototypeCodePointAt,
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StringPrototypeReplaceAll,
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TypeError,
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TypedArrayPrototypeSubarray,
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} = window.__bootstrap.primordials;
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const entryList = Symbol("entry list");
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/**
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* @param {string} name
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* @param {string | Blob} value
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* @param {string | undefined} filename
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* @returns {FormDataEntry}
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*/
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function createEntry(name, value, filename) {
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if (value instanceof Blob && !(value instanceof File)) {
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value = new File([value], "blob", { type: value.type });
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}
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if (value instanceof File && filename !== undefined) {
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value = new File([value], filename, {
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type: value.type,
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lastModified: value.lastModified,
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});
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}
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return {
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name,
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// @ts-expect-error because TS is not smart enough
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value,
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};
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}
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/**
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* @typedef FormDataEntry
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* @property {string} name
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* @property {FormDataEntryValue} value
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*/
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class FormData {
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/** @type {FormDataEntry[]} */
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[entryList] = [];
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/** @param {void} form */
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constructor(form) {
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if (form !== undefined) {
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webidl.illegalConstructor();
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}
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this[webidl.brand] = webidl.brand;
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}
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/**
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* @param {string} name
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* @param {string | Blob} valueOrBlobValue
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* @param {string} [filename]
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* @returns {void}
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*/
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append(name, valueOrBlobValue, filename) {
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webidl.assertBranded(this, FormData);
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const prefix = "Failed to execute 'append' on 'FormData'";
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webidl.requiredArguments(arguments.length, 2, { prefix });
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name = webidl.converters["USVString"](name, {
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prefix,
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context: "Argument 1",
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});
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if (valueOrBlobValue instanceof Blob) {
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valueOrBlobValue = webidl.converters["Blob"](valueOrBlobValue, {
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prefix,
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context: "Argument 2",
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});
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if (filename !== undefined) {
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filename = webidl.converters["USVString"](filename, {
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prefix,
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context: "Argument 3",
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});
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}
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} else {
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valueOrBlobValue = webidl.converters["USVString"](valueOrBlobValue, {
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prefix,
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context: "Argument 2",
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});
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}
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const entry = createEntry(name, valueOrBlobValue, filename);
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ArrayPrototypePush(this[entryList], entry);
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}
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/**
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* @param {string} name
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* @returns {void}
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*/
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delete(name) {
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webidl.assertBranded(this, FormData);
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const prefix = "Failed to execute 'name' on 'FormData'";
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webidl.requiredArguments(arguments.length, 1, { prefix });
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name = webidl.converters["USVString"](name, {
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prefix,
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context: "Argument 1",
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});
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const list = this[entryList];
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for (let i = 0; i < list.length; i++) {
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if (list[i].name === name) {
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ArrayPrototypeSplice(list, i, 1);
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i--;
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}
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}
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}
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/**
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* @param {string} name
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* @returns {FormDataEntryValue | null}
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*/
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get(name) {
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webidl.assertBranded(this, FormData);
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const prefix = "Failed to execute 'get' on 'FormData'";
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webidl.requiredArguments(arguments.length, 1, { prefix });
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name = webidl.converters["USVString"](name, {
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prefix,
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context: "Argument 1",
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});
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for (const entry of this[entryList]) {
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if (entry.name === name) return entry.value;
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}
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return null;
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}
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/**
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* @param {string} name
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* @returns {FormDataEntryValue[]}
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*/
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getAll(name) {
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webidl.assertBranded(this, FormData);
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const prefix = "Failed to execute 'getAll' on 'FormData'";
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webidl.requiredArguments(arguments.length, 1, { prefix });
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name = webidl.converters["USVString"](name, {
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prefix,
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context: "Argument 1",
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});
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const returnList = [];
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for (const entry of this[entryList]) {
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if (entry.name === name) ArrayPrototypePush(returnList, entry.value);
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}
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return returnList;
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}
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/**
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* @param {string} name
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* @returns {boolean}
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*/
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has(name) {
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webidl.assertBranded(this, FormData);
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const prefix = "Failed to execute 'has' on 'FormData'";
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webidl.requiredArguments(arguments.length, 1, { prefix });
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name = webidl.converters["USVString"](name, {
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prefix,
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context: "Argument 1",
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});
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for (const entry of this[entryList]) {
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if (entry.name === name) return true;
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}
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return false;
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}
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/**
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* @param {string} name
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* @param {string | Blob} valueOrBlobValue
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* @param {string} [filename]
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* @returns {void}
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*/
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set(name, valueOrBlobValue, filename) {
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webidl.assertBranded(this, FormData);
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const prefix = "Failed to execute 'set' on 'FormData'";
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webidl.requiredArguments(arguments.length, 2, { prefix });
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name = webidl.converters["USVString"](name, {
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prefix,
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context: "Argument 1",
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});
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if (valueOrBlobValue instanceof Blob) {
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valueOrBlobValue = webidl.converters["Blob"](valueOrBlobValue, {
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prefix,
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context: "Argument 2",
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});
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if (filename !== undefined) {
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filename = webidl.converters["USVString"](filename, {
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prefix,
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context: "Argument 3",
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});
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}
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} else {
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valueOrBlobValue = webidl.converters["USVString"](valueOrBlobValue, {
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prefix,
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context: "Argument 2",
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});
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}
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const entry = createEntry(name, valueOrBlobValue, filename);
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const list = this[entryList];
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let added = false;
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for (let i = 0; i < list.length; i++) {
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if (list[i].name === name) {
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if (!added) {
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list[i] = entry;
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added = true;
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} else {
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ArrayPrototypeSplice(list, i, 1);
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i--;
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}
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}
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}
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if (!added) {
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ArrayPrototypePush(list, entry);
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}
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}
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}
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webidl.mixinPairIterable("FormData", FormData, entryList, "name", "value");
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webidl.configurePrototype(FormData);
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const escape = (str, isFilename) =>
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StringPrototypeReplace(
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StringPrototypeReplace(
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StringPrototypeReplace(
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isFilename ? str : StringPrototypeReplace(str, /\r?\n|\r/g, "\r\n"),
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/\n/g,
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"%0A",
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),
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/\r/g,
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"%0D",
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),
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/"/g,
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"%22",
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);
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/**
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* convert FormData to a Blob synchronous without reading all of the files
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* @param {globalThis.FormData} formData
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*/
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function formDataToBlob(formData) {
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const boundary = StringPrototypePadStart(
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StringPrototypeSlice(
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StringPrototypeReplaceAll(`${MathRandom()}${MathRandom()}`, ".", ""),
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-28,
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),
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32,
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"-",
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);
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const chunks = [];
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const prefix = `--${boundary}\r\nContent-Disposition: form-data; name="`;
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for (const [name, value] of formData) {
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if (typeof value === "string") {
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ArrayPrototypePush(
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chunks,
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prefix + escape(name) + '"' + CRLF + CRLF +
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StringPrototypeReplace(value, /\r(?!\n)|(?<!\r)\n/g, CRLF) + CRLF,
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);
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} else {
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ArrayPrototypePush(
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chunks,
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prefix + escape(name) + `"; filename="${escape(value.name, true)}"` +
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CRLF +
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`Content-Type: ${value.type || "application/octet-stream"}\r\n\r\n`,
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value,
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CRLF,
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);
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}
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}
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ArrayPrototypePush(chunks, `--${boundary}--`);
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return new Blob(chunks, {
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type: "multipart/form-data; boundary=" + boundary,
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});
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}
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/**
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* @param {string} value
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* @returns {Map<string, string>}
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*/
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function parseContentDisposition(value) {
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/** @type {Map<string, string>} */
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const params = new Map();
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// Forced to do so for some Map constructor param mismatch
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ArrayPrototypeForEach(
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ArrayPrototypeMap(
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ArrayPrototypeFilter(
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ArrayPrototypeMap(
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ArrayPrototypeSlice(StringPrototypeSplit(value, ";"), 1),
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(s) => StringPrototypeSplit(StringPrototypeTrim(s), "="),
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),
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(arr) => arr.length > 1,
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),
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([k, v]) => [k, StringPrototypeReplace(v, /^"([^"]*)"$/, "$1")],
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),
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([k, v]) => MapPrototypeSet(params, k, v),
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);
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return params;
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}
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const CRLF = "\r\n";
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const LF = StringPrototypeCodePointAt(CRLF, 1);
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const CR = StringPrototypeCodePointAt(CRLF, 0);
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class MultipartParser {
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/**
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* @param {Uint8Array} body
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* @param {string | undefined} boundary
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*/
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constructor(body, boundary) {
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if (!boundary) {
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throw new TypeError("multipart/form-data must provide a boundary");
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}
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this.boundary = `--${boundary}`;
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this.body = body;
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this.boundaryChars = core.encode(this.boundary);
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}
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/**
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* @param {string} headersText
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* @returns {{ headers: Headers, disposition: Map<string, string> }}
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*/
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#parseHeaders(headersText) {
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const headers = new Headers();
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const rawHeaders = StringPrototypeSplit(headersText, "\r\n");
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for (const rawHeader of rawHeaders) {
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const sepIndex = StringPrototypeIndexOf(rawHeader, ":");
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if (sepIndex < 0) {
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continue; // Skip this header
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}
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const key = StringPrototypeSlice(rawHeader, 0, sepIndex);
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const value = StringPrototypeSlice(rawHeader, sepIndex + 1);
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headers.set(key, value);
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}
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const disposition = parseContentDisposition(
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headers.get("Content-Disposition") ?? "",
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);
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return { headers, disposition };
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}
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/**
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* @returns {FormData}
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*/
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parse() {
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// Body must be at least 2 boundaries + \r\n + -- on the last boundary.
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if (this.body.length < (this.boundary.length * 2) + 4) {
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throw new TypeError("Form data too short to be valid.");
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}
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const formData = new FormData();
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let headerText = "";
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let boundaryIndex = 0;
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let state = 0;
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let fileStart = 0;
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for (let i = 0; i < this.body.length; i++) {
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const byte = this.body[i];
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const prevByte = this.body[i - 1];
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const isNewLine = byte === LF && prevByte === CR;
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if (state === 1 || state === 2 || state == 3) {
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headerText += StringFromCharCode(byte);
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}
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if (state === 0 && isNewLine) {
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state = 1;
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} else if (state === 1 && isNewLine) {
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state = 2;
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const headersDone = this.body[i + 1] === CR &&
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this.body[i + 2] === LF;
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if (headersDone) {
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state = 3;
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}
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} else if (state === 2 && isNewLine) {
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state = 3;
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} else if (state === 3 && isNewLine) {
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state = 4;
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fileStart = i + 1;
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} else if (state === 4) {
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if (this.boundaryChars[boundaryIndex] !== byte) {
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boundaryIndex = 0;
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} else {
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boundaryIndex++;
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}
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if (boundaryIndex >= this.boundary.length) {
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const { headers, disposition } = this.#parseHeaders(headerText);
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const content = TypedArrayPrototypeSubarray(
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this.body,
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fileStart,
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i - boundaryIndex - 1,
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);
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// https://fetch.spec.whatwg.org/#ref-for-dom-body-formdata
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const filename = MapPrototypeGet(disposition, "filename");
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const name = MapPrototypeGet(disposition, "name");
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state = 5;
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// Reset
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boundaryIndex = 0;
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headerText = "";
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if (!name) {
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continue; // Skip, unknown name
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}
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if (filename) {
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const blob = new Blob([content], {
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type: headers.get("Content-Type") || "application/octet-stream",
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});
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formData.append(name, blob, filename);
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} else {
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formData.append(name, core.decode(content));
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}
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}
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} else if (state === 5 && isNewLine) {
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state = 1;
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}
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}
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return formData;
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}
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}
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/**
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* @param {Uint8Array} body
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* @param {string | undefined} boundary
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* @returns {FormData}
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*/
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function parseFormData(body, boundary) {
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const parser = new MultipartParser(body, boundary);
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return parser.parse();
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}
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/**
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* @param {FormDataEntry[]} entries
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* @returns {FormData}
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*/
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function formDataFromEntries(entries) {
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const fd = new FormData();
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fd[entryList] = entries;
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return fd;
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}
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webidl.converters["FormData"] = webidl
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.createInterfaceConverter("FormData", FormData);
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globalThis.__bootstrap.formData = {
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FormData,
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formDataToBlob,
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parseFormData,
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formDataFromEntries,
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};
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})(globalThis);
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