mirror of
https://github.com/denoland/deno.git
synced 2024-12-25 16:49:18 -05:00
1391 lines
38 KiB
JavaScript
1391 lines
38 KiB
JavaScript
// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
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((window) => {
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const core = window.Deno.core;
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// provided by "deno_web"
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const { URLSearchParams } = window.__bootstrap.url;
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const { requiredArguments } = window.__bootstrap.fetchUtil;
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const { ReadableStream, isReadableStreamDisturbed } =
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window.__bootstrap.streams;
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const { DomIterableMixin } = window.__bootstrap.domIterable;
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const { Headers } = window.__bootstrap.headers;
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// FIXME(bartlomieju): stubbed out, needed in blob
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const build = {
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os: "",
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};
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const MAX_SIZE = 2 ** 32 - 2;
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// `off` is the offset into `dst` where it will at which to begin writing values
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// from `src`.
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// Returns the number of bytes copied.
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function copyBytes(src, dst, off = 0) {
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const r = dst.byteLength - off;
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if (src.byteLength > r) {
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src = src.subarray(0, r);
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}
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dst.set(src, off);
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return src.byteLength;
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}
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class Buffer {
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#buf = null; // contents are the bytes buf[off : len(buf)]
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#off = 0; // read at buf[off], write at buf[buf.byteLength]
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constructor(ab) {
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if (ab == null) {
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this.#buf = new Uint8Array(0);
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return;
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}
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this.#buf = new Uint8Array(ab);
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}
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bytes(options = { copy: true }) {
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if (options.copy === false) return this.#buf.subarray(this.#off);
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return this.#buf.slice(this.#off);
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}
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empty() {
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return this.#buf.byteLength <= this.#off;
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}
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get length() {
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return this.#buf.byteLength - this.#off;
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}
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get capacity() {
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return this.#buf.buffer.byteLength;
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}
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reset() {
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this.#reslice(0);
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this.#off = 0;
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}
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#tryGrowByReslice = (n) => {
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const l = this.#buf.byteLength;
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if (n <= this.capacity - l) {
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this.#reslice(l + n);
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return l;
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}
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return -1;
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};
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#reslice = (len) => {
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if (!(len <= this.#buf.buffer.byteLength)) {
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throw new Error("assert");
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}
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this.#buf = new Uint8Array(this.#buf.buffer, 0, len);
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};
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writeSync(p) {
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const m = this.#grow(p.byteLength);
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return copyBytes(p, this.#buf, m);
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}
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write(p) {
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const n = this.writeSync(p);
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return Promise.resolve(n);
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}
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#grow = (n) => {
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const m = this.length;
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// If buffer is empty, reset to recover space.
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if (m === 0 && this.#off !== 0) {
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this.reset();
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}
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// Fast: Try to grow by means of a reslice.
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const i = this.#tryGrowByReslice(n);
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if (i >= 0) {
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return i;
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}
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const c = this.capacity;
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if (n <= Math.floor(c / 2) - m) {
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// We can slide things down instead of allocating a new
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// ArrayBuffer. We only need m+n <= c to slide, but
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// we instead let capacity get twice as large so we
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// don't spend all our time copying.
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copyBytes(this.#buf.subarray(this.#off), this.#buf);
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} else if (c + n > MAX_SIZE) {
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throw new Error("The buffer cannot be grown beyond the maximum size.");
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} else {
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// Not enough space anywhere, we need to allocate.
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const buf = new Uint8Array(Math.min(2 * c + n, MAX_SIZE));
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copyBytes(this.#buf.subarray(this.#off), buf);
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this.#buf = buf;
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}
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// Restore this.#off and len(this.#buf).
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this.#off = 0;
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this.#reslice(Math.min(m + n, MAX_SIZE));
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return m;
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};
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grow(n) {
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if (n < 0) {
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throw Error("Buffer.grow: negative count");
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}
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const m = this.#grow(n);
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this.#reslice(m);
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}
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}
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function isTypedArray(x) {
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return ArrayBuffer.isView(x) && !(x instanceof DataView);
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}
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function hasHeaderValueOf(s, value) {
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return new RegExp(`^${value}[\t\s]*;?`).test(s);
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}
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function getHeaderValueParams(value) {
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const params = new Map();
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// Forced to do so for some Map constructor param mismatch
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value
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.split(";")
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.slice(1)
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.map((s) => s.trim().split("="))
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.filter((arr) => arr.length > 1)
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.map(([k, v]) => [k, v.replace(/^"([^"]*)"$/, "$1")])
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.forEach(([k, v]) => params.set(k, v));
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return params;
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}
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const decoder = new TextDecoder();
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const encoder = new TextEncoder();
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const CR = "\r".charCodeAt(0);
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const LF = "\n".charCodeAt(0);
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const dataSymbol = Symbol("data");
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const bytesSymbol = Symbol("bytes");
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function containsOnlyASCII(str) {
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if (typeof str !== "string") {
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return false;
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}
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return /^[\x00-\x7F]*$/.test(str);
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}
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function convertLineEndingsToNative(s) {
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const nativeLineEnd = build.os == "windows" ? "\r\n" : "\n";
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let position = 0;
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let collectionResult = collectSequenceNotCRLF(s, position);
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let token = collectionResult.collected;
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position = collectionResult.newPosition;
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let result = token;
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while (position < s.length) {
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const c = s.charAt(position);
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if (c == "\r") {
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result += nativeLineEnd;
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position++;
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if (position < s.length && s.charAt(position) == "\n") {
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position++;
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}
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} else if (c == "\n") {
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position++;
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result += nativeLineEnd;
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}
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collectionResult = collectSequenceNotCRLF(s, position);
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token = collectionResult.collected;
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position = collectionResult.newPosition;
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result += token;
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}
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return result;
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}
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function collectSequenceNotCRLF(
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s,
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position,
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) {
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const start = position;
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for (
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let c = s.charAt(position);
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position < s.length && !(c == "\r" || c == "\n");
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c = s.charAt(++position)
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);
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return { collected: s.slice(start, position), newPosition: position };
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}
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function toUint8Arrays(
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blobParts,
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doNormalizeLineEndingsToNative,
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) {
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const ret = [];
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const enc = new TextEncoder();
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for (const element of blobParts) {
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if (typeof element === "string") {
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let str = element;
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if (doNormalizeLineEndingsToNative) {
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str = convertLineEndingsToNative(element);
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}
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ret.push(enc.encode(str));
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// eslint-disable-next-line @typescript-eslint/no-use-before-define
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} else if (element instanceof Blob) {
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ret.push(element[bytesSymbol]);
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} else if (element instanceof Uint8Array) {
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ret.push(element);
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} else if (element instanceof Uint16Array) {
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const uint8 = new Uint8Array(element.buffer);
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ret.push(uint8);
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} else if (element instanceof Uint32Array) {
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const uint8 = new Uint8Array(element.buffer);
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ret.push(uint8);
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} else if (ArrayBuffer.isView(element)) {
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// Convert view to Uint8Array.
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const uint8 = new Uint8Array(element.buffer);
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ret.push(uint8);
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} else if (element instanceof ArrayBuffer) {
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// Create a new Uint8Array view for the given ArrayBuffer.
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const uint8 = new Uint8Array(element);
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ret.push(uint8);
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} else {
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ret.push(enc.encode(String(element)));
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}
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}
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return ret;
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}
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function processBlobParts(
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blobParts,
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options,
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) {
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const normalizeLineEndingsToNative = options.ending === "native";
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// ArrayBuffer.transfer is not yet implemented in V8, so we just have to
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// pre compute size of the array buffer and do some sort of static allocation
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// instead of dynamic allocation.
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const uint8Arrays = toUint8Arrays(blobParts, normalizeLineEndingsToNative);
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const byteLength = uint8Arrays
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.map((u8) => u8.byteLength)
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.reduce((a, b) => a + b, 0);
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const ab = new ArrayBuffer(byteLength);
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const bytes = new Uint8Array(ab);
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let courser = 0;
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for (const u8 of uint8Arrays) {
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bytes.set(u8, courser);
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courser += u8.byteLength;
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}
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return bytes;
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}
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function getStream(blobBytes) {
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// TODO: Align to spec https://fetch.spec.whatwg.org/#concept-construct-readablestream
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return new ReadableStream({
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type: "bytes",
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start: (controller) => {
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controller.enqueue(blobBytes);
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controller.close();
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},
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});
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}
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async function readBytes(
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reader,
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) {
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const chunks = [];
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while (true) {
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const { done, value } = await reader.read();
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if (!done && value instanceof Uint8Array) {
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chunks.push(value);
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} else if (done) {
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const size = chunks.reduce((p, i) => p + i.byteLength, 0);
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const bytes = new Uint8Array(size);
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let offs = 0;
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for (const chunk of chunks) {
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bytes.set(chunk, offs);
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offs += chunk.byteLength;
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}
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return bytes.buffer;
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} else {
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throw new TypeError("Invalid reader result.");
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}
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}
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}
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// A WeakMap holding blob to byte array mapping.
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// Ensures it does not impact garbage collection.
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// const blobBytesWeakMap = new WeakMap();
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class Blob {
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constructor(blobParts, options) {
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if (arguments.length === 0) {
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this[bytesSymbol] = new Uint8Array();
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return;
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}
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const { ending = "transparent", type = "" } = options ?? {};
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// Normalize options.type.
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let normalizedType = type;
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if (!containsOnlyASCII(type)) {
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normalizedType = "";
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} else {
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if (type.length) {
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for (let i = 0; i < type.length; ++i) {
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const char = type[i];
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if (char < "\u0020" || char > "\u007E") {
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normalizedType = "";
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break;
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}
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}
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normalizedType = type.toLowerCase();
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}
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}
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const bytes = processBlobParts(blobParts, { ending, type });
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// Set Blob object's properties.
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this[bytesSymbol] = bytes;
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this.size = bytes.byteLength;
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this.type = normalizedType;
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}
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slice(start, end, contentType) {
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return new Blob([this[bytesSymbol].slice(start, end)], {
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type: contentType || this.type,
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});
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}
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stream() {
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return getStream(this[bytesSymbol]);
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}
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async text() {
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const reader = getStream(this[bytesSymbol]).getReader();
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const decoder = new TextDecoder();
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return decoder.decode(await readBytes(reader));
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}
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arrayBuffer() {
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return readBytes(getStream(this[bytesSymbol]).getReader());
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}
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}
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class DomFile extends Blob {
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constructor(
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fileBits,
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fileName,
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options,
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) {
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const { lastModified = Date.now(), ...blobPropertyBag } = options ?? {};
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super(fileBits, blobPropertyBag);
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// 4.1.2.1 Replace any "/" character (U+002F SOLIDUS)
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// with a ":" (U + 003A COLON)
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this.name = String(fileName).replace(/\u002F/g, "\u003A");
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// 4.1.3.3 If lastModified is not provided, set lastModified to the current
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// date and time represented in number of milliseconds since the Unix Epoch.
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this.lastModified = lastModified;
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}
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}
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function parseFormDataValue(value, filename) {
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if (value instanceof DomFile) {
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return new DomFile([value], filename || value.name, {
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type: value.type,
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lastModified: value.lastModified,
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});
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} else if (value instanceof Blob) {
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return new DomFile([value], filename || "blob", {
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type: value.type,
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});
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} else {
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return String(value);
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}
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}
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class FormDataBase {
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[dataSymbol] = [];
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append(name, value, filename) {
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requiredArguments("FormData.append", arguments.length, 2);
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name = String(name);
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this[dataSymbol].push([name, parseFormDataValue(value, filename)]);
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}
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delete(name) {
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requiredArguments("FormData.delete", arguments.length, 1);
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name = String(name);
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let i = 0;
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while (i < this[dataSymbol].length) {
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if (this[dataSymbol][i][0] === name) {
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this[dataSymbol].splice(i, 1);
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} else {
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i++;
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}
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}
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}
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getAll(name) {
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requiredArguments("FormData.getAll", arguments.length, 1);
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name = String(name);
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const values = [];
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for (const entry of this[dataSymbol]) {
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if (entry[0] === name) {
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values.push(entry[1]);
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}
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}
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return values;
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}
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get(name) {
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requiredArguments("FormData.get", arguments.length, 1);
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name = String(name);
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for (const entry of this[dataSymbol]) {
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if (entry[0] === name) {
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return entry[1];
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}
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}
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return null;
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}
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has(name) {
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requiredArguments("FormData.has", arguments.length, 1);
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name = String(name);
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return this[dataSymbol].some((entry) => entry[0] === name);
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}
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set(name, value, filename) {
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requiredArguments("FormData.set", arguments.length, 2);
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name = String(name);
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// If there are any entries in the context object’s entry list whose name
|
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// is name, replace the first such entry with entry and remove the others
|
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let found = false;
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let i = 0;
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while (i < this[dataSymbol].length) {
|
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if (this[dataSymbol][i][0] === name) {
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if (!found) {
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this[dataSymbol][i][1] = parseFormDataValue(value, filename);
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found = true;
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} else {
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this[dataSymbol].splice(i, 1);
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continue;
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}
|
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}
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i++;
|
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}
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|
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// Otherwise, append entry to the context object’s entry list.
|
||
if (!found) {
|
||
this[dataSymbol].push([name, parseFormDataValue(value, filename)]);
|
||
}
|
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}
|
||
|
||
get [Symbol.toStringTag]() {
|
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return "FormData";
|
||
}
|
||
}
|
||
|
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class FormData extends DomIterableMixin(FormDataBase, dataSymbol) {}
|
||
|
||
class MultipartBuilder {
|
||
constructor(formData, boundary) {
|
||
this.formData = formData;
|
||
this.boundary = boundary ?? this.#createBoundary();
|
||
this.writer = new Buffer();
|
||
}
|
||
|
||
getContentType() {
|
||
return `multipart/form-data; boundary=${this.boundary}`;
|
||
}
|
||
|
||
getBody() {
|
||
for (const [fieldName, fieldValue] of this.formData.entries()) {
|
||
if (fieldValue instanceof DomFile) {
|
||
this.#writeFile(fieldName, fieldValue);
|
||
} else this.#writeField(fieldName, fieldValue);
|
||
}
|
||
|
||
this.writer.writeSync(encoder.encode(`\r\n--${this.boundary}--`));
|
||
|
||
return this.writer.bytes();
|
||
}
|
||
|
||
#createBoundary = () => {
|
||
return (
|
||
"----------" +
|
||
Array.from(Array(32))
|
||
.map(() => Math.random().toString(36)[2] || 0)
|
||
.join("")
|
||
);
|
||
};
|
||
|
||
#writeHeaders = (headers) => {
|
||
let buf = this.writer.empty() ? "" : "\r\n";
|
||
|
||
buf += `--${this.boundary}\r\n`;
|
||
for (const [key, value] of headers) {
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buf += `${key}: ${value}\r\n`;
|
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}
|
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buf += `\r\n`;
|
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|
||
// FIXME(Bartlomieju): this should use `writeSync()`
|
||
this.writer.write(encoder.encode(buf));
|
||
};
|
||
|
||
#writeFileHeaders = (
|
||
field,
|
||
filename,
|
||
type,
|
||
) => {
|
||
const headers = [
|
||
[
|
||
"Content-Disposition",
|
||
`form-data; name="${field}"; filename="${filename}"`,
|
||
],
|
||
["Content-Type", type || "application/octet-stream"],
|
||
];
|
||
return this.#writeHeaders(headers);
|
||
};
|
||
|
||
#writeFieldHeaders = (field) => {
|
||
const headers = [["Content-Disposition", `form-data; name="${field}"`]];
|
||
return this.#writeHeaders(headers);
|
||
};
|
||
|
||
#writeField = (field, value) => {
|
||
this.#writeFieldHeaders(field);
|
||
this.writer.writeSync(encoder.encode(value));
|
||
};
|
||
|
||
#writeFile = (field, value) => {
|
||
this.#writeFileHeaders(field, value.name, value.type);
|
||
this.writer.writeSync(value[bytesSymbol]);
|
||
};
|
||
}
|
||
|
||
class MultipartParser {
|
||
constructor(body, boundary) {
|
||
if (!boundary) {
|
||
throw new TypeError("multipart/form-data must provide a boundary");
|
||
}
|
||
|
||
this.boundary = `--${boundary}`;
|
||
this.body = body;
|
||
this.boundaryChars = encoder.encode(this.boundary);
|
||
}
|
||
|
||
#parseHeaders = (headersText) => {
|
||
const headers = new Headers();
|
||
const rawHeaders = headersText.split("\r\n");
|
||
for (const rawHeader of rawHeaders) {
|
||
const sepIndex = rawHeader.indexOf(":");
|
||
if (sepIndex < 0) {
|
||
continue; // Skip this header
|
||
}
|
||
const key = rawHeader.slice(0, sepIndex);
|
||
const value = rawHeader.slice(sepIndex + 1);
|
||
headers.set(key, value);
|
||
}
|
||
|
||
return {
|
||
headers,
|
||
disposition: getHeaderValueParams(
|
||
headers.get("Content-Disposition") ?? "",
|
||
),
|
||
};
|
||
};
|
||
|
||
parse() {
|
||
const formData = new FormData();
|
||
let headerText = "";
|
||
let boundaryIndex = 0;
|
||
let state = 0;
|
||
let fileStart = 0;
|
||
|
||
for (let i = 0; i < this.body.length; i++) {
|
||
const byte = this.body[i];
|
||
const prevByte = this.body[i - 1];
|
||
const isNewLine = byte === LF && prevByte === CR;
|
||
|
||
if (state === 1 || state === 2 || state == 3) {
|
||
headerText += String.fromCharCode(byte);
|
||
}
|
||
if (state === 0 && isNewLine) {
|
||
state = 1;
|
||
} else if (state === 1 && isNewLine) {
|
||
state = 2;
|
||
const headersDone = this.body[i + 1] === CR &&
|
||
this.body[i + 2] === LF;
|
||
|
||
if (headersDone) {
|
||
state = 3;
|
||
}
|
||
} else if (state === 2 && isNewLine) {
|
||
state = 3;
|
||
} else if (state === 3 && isNewLine) {
|
||
state = 4;
|
||
fileStart = i + 1;
|
||
} else if (state === 4) {
|
||
if (this.boundaryChars[boundaryIndex] !== byte) {
|
||
boundaryIndex = 0;
|
||
} else {
|
||
boundaryIndex++;
|
||
}
|
||
|
||
if (boundaryIndex >= this.boundary.length) {
|
||
const { headers, disposition } = this.#parseHeaders(headerText);
|
||
const content = this.body.subarray(
|
||
fileStart,
|
||
i - boundaryIndex - 1,
|
||
);
|
||
// https://fetch.spec.whatwg.org/#ref-for-dom-body-formdata
|
||
const filename = disposition.get("filename");
|
||
const name = disposition.get("name");
|
||
|
||
state = 5;
|
||
// Reset
|
||
boundaryIndex = 0;
|
||
headerText = "";
|
||
|
||
if (!name) {
|
||
continue; // Skip, unknown name
|
||
}
|
||
|
||
if (filename) {
|
||
const blob = new Blob([content], {
|
||
type: headers.get("Content-Type") || "application/octet-stream",
|
||
});
|
||
formData.append(name, blob, filename);
|
||
} else {
|
||
formData.append(name, decoder.decode(content));
|
||
}
|
||
}
|
||
} else if (state === 5 && isNewLine) {
|
||
state = 1;
|
||
}
|
||
}
|
||
|
||
return formData;
|
||
}
|
||
}
|
||
|
||
function validateBodyType(owner, bodySource) {
|
||
if (isTypedArray(bodySource)) {
|
||
return true;
|
||
} else if (bodySource instanceof ArrayBuffer) {
|
||
return true;
|
||
} else if (typeof bodySource === "string") {
|
||
return true;
|
||
} else if (bodySource instanceof ReadableStream) {
|
||
return true;
|
||
} else if (bodySource instanceof FormData) {
|
||
return true;
|
||
} else if (bodySource instanceof URLSearchParams) {
|
||
return true;
|
||
} else if (!bodySource) {
|
||
return true; // null body is fine
|
||
}
|
||
throw new Error(
|
||
`Bad ${owner.constructor.name} body type: ${bodySource.constructor.name}`,
|
||
);
|
||
}
|
||
|
||
async function bufferFromStream(
|
||
stream,
|
||
size,
|
||
) {
|
||
const encoder = new TextEncoder();
|
||
const buffer = new Buffer();
|
||
|
||
if (size) {
|
||
// grow to avoid unnecessary allocations & copies
|
||
buffer.grow(size);
|
||
}
|
||
|
||
while (true) {
|
||
const { done, value } = await stream.read();
|
||
|
||
if (done) break;
|
||
|
||
if (typeof value === "string") {
|
||
buffer.writeSync(encoder.encode(value));
|
||
} else if (value instanceof ArrayBuffer) {
|
||
buffer.writeSync(new Uint8Array(value));
|
||
} else if (value instanceof Uint8Array) {
|
||
buffer.writeSync(value);
|
||
} else if (!value) {
|
||
// noop for undefined
|
||
} else {
|
||
throw new Error("unhandled type on stream read");
|
||
}
|
||
}
|
||
|
||
return buffer.bytes().buffer;
|
||
}
|
||
|
||
function bodyToArrayBuffer(bodySource) {
|
||
if (isTypedArray(bodySource)) {
|
||
return bodySource.buffer;
|
||
} else if (bodySource instanceof ArrayBuffer) {
|
||
return bodySource;
|
||
} else if (typeof bodySource === "string") {
|
||
const enc = new TextEncoder();
|
||
return enc.encode(bodySource).buffer;
|
||
} else if (bodySource instanceof ReadableStream) {
|
||
throw new Error(
|
||
`Can't convert stream to ArrayBuffer (try bufferFromStream)`,
|
||
);
|
||
} else if (
|
||
bodySource instanceof FormData ||
|
||
bodySource instanceof URLSearchParams
|
||
) {
|
||
const enc = new TextEncoder();
|
||
return enc.encode(bodySource.toString()).buffer;
|
||
} else if (!bodySource) {
|
||
return new ArrayBuffer(0);
|
||
}
|
||
throw new Error(
|
||
`Body type not implemented: ${bodySource.constructor.name}`,
|
||
);
|
||
}
|
||
|
||
const BodyUsedError =
|
||
"Failed to execute 'clone' on 'Body': body is already used";
|
||
|
||
class Body {
|
||
#contentType = "";
|
||
#size = undefined;
|
||
|
||
constructor(_bodySource, meta) {
|
||
validateBodyType(this, _bodySource);
|
||
this._bodySource = _bodySource;
|
||
this.#contentType = meta.contentType;
|
||
this.#size = meta.size;
|
||
this._stream = null;
|
||
}
|
||
|
||
get body() {
|
||
if (this._stream) {
|
||
return this._stream;
|
||
}
|
||
|
||
if (!this._bodySource) {
|
||
return null;
|
||
} else if (this._bodySource instanceof ReadableStream) {
|
||
this._stream = this._bodySource;
|
||
} else {
|
||
const buf = bodyToArrayBuffer(this._bodySource);
|
||
if (!(buf instanceof ArrayBuffer)) {
|
||
throw new Error(
|
||
`Expected ArrayBuffer from body`,
|
||
);
|
||
}
|
||
|
||
this._stream = new ReadableStream({
|
||
start(controller) {
|
||
controller.enqueue(buf);
|
||
controller.close();
|
||
},
|
||
});
|
||
}
|
||
|
||
return this._stream;
|
||
}
|
||
|
||
get bodyUsed() {
|
||
if (this.body && isReadableStreamDisturbed(this.body)) {
|
||
return true;
|
||
}
|
||
return false;
|
||
}
|
||
|
||
async blob() {
|
||
return new Blob([await this.arrayBuffer()], {
|
||
type: this.#contentType,
|
||
});
|
||
}
|
||
|
||
// ref: https://fetch.spec.whatwg.org/#body-mixin
|
||
async formData() {
|
||
const formData = new FormData();
|
||
if (hasHeaderValueOf(this.#contentType, "multipart/form-data")) {
|
||
const params = getHeaderValueParams(this.#contentType);
|
||
|
||
// ref: https://tools.ietf.org/html/rfc2046#section-5.1
|
||
const boundary = params.get("boundary");
|
||
const body = new Uint8Array(await this.arrayBuffer());
|
||
const multipartParser = new MultipartParser(body, boundary);
|
||
|
||
return multipartParser.parse();
|
||
} else if (
|
||
hasHeaderValueOf(this.#contentType, "application/x-www-form-urlencoded")
|
||
) {
|
||
// From https://github.com/github/fetch/blob/master/fetch.js
|
||
// Copyright (c) 2014-2016 GitHub, Inc. MIT License
|
||
const body = await this.text();
|
||
try {
|
||
body
|
||
.trim()
|
||
.split("&")
|
||
.forEach((bytes) => {
|
||
if (bytes) {
|
||
const split = bytes.split("=");
|
||
const name = split.shift().replace(/\+/g, " ");
|
||
const value = split.join("=").replace(/\+/g, " ");
|
||
formData.append(
|
||
decodeURIComponent(name),
|
||
decodeURIComponent(value),
|
||
);
|
||
}
|
||
});
|
||
} catch (e) {
|
||
throw new TypeError("Invalid form urlencoded format");
|
||
}
|
||
return formData;
|
||
} else {
|
||
throw new TypeError("Invalid form data");
|
||
}
|
||
}
|
||
|
||
async text() {
|
||
if (typeof this._bodySource === "string") {
|
||
return this._bodySource;
|
||
}
|
||
|
||
const ab = await this.arrayBuffer();
|
||
const decoder = new TextDecoder("utf-8");
|
||
return decoder.decode(ab);
|
||
}
|
||
|
||
async json() {
|
||
const raw = await this.text();
|
||
return JSON.parse(raw);
|
||
}
|
||
|
||
arrayBuffer() {
|
||
if (this._bodySource instanceof ReadableStream) {
|
||
return bufferFromStream(this._bodySource.getReader(), this.#size);
|
||
}
|
||
return Promise.resolve(bodyToArrayBuffer(this._bodySource));
|
||
}
|
||
}
|
||
|
||
function createHttpClient(options) {
|
||
return new HttpClient(opCreateHttpClient(options));
|
||
}
|
||
|
||
function opCreateHttpClient(args) {
|
||
return core.jsonOpSync("op_create_http_client", args);
|
||
}
|
||
|
||
class HttpClient {
|
||
constructor(rid) {
|
||
this.rid = rid;
|
||
}
|
||
close() {
|
||
core.close(this.rid);
|
||
}
|
||
}
|
||
|
||
function opFetch(args, body) {
|
||
let zeroCopy;
|
||
if (body != null) {
|
||
zeroCopy = new Uint8Array(body.buffer, body.byteOffset, body.byteLength);
|
||
}
|
||
|
||
return core.jsonOpAsync("op_fetch", args, ...(zeroCopy ? [zeroCopy] : []));
|
||
}
|
||
|
||
const NULL_BODY_STATUS = [101, 204, 205, 304];
|
||
const REDIRECT_STATUS = [301, 302, 303, 307, 308];
|
||
|
||
function byteUpperCase(s) {
|
||
return String(s).replace(/[a-z]/g, function byteUpperCaseReplace(c) {
|
||
return c.toUpperCase();
|
||
});
|
||
}
|
||
|
||
function normalizeMethod(m) {
|
||
const u = byteUpperCase(m);
|
||
if (
|
||
u === "DELETE" ||
|
||
u === "GET" ||
|
||
u === "HEAD" ||
|
||
u === "OPTIONS" ||
|
||
u === "POST" ||
|
||
u === "PUT"
|
||
) {
|
||
return u;
|
||
}
|
||
return m;
|
||
}
|
||
|
||
class Request extends Body {
|
||
constructor(input, init) {
|
||
if (arguments.length < 1) {
|
||
throw TypeError("Not enough arguments");
|
||
}
|
||
|
||
if (!init) {
|
||
init = {};
|
||
}
|
||
|
||
let b;
|
||
|
||
// prefer body from init
|
||
if (init.body) {
|
||
b = init.body;
|
||
} else if (input instanceof Request && input._bodySource) {
|
||
if (input.bodyUsed) {
|
||
throw TypeError(BodyUsedError);
|
||
}
|
||
b = input._bodySource;
|
||
} else if (typeof input === "object" && "body" in input && input.body) {
|
||
if (input.bodyUsed) {
|
||
throw TypeError(BodyUsedError);
|
||
}
|
||
b = input.body;
|
||
} else {
|
||
b = "";
|
||
}
|
||
|
||
let headers;
|
||
|
||
// prefer headers from init
|
||
if (init.headers) {
|
||
headers = new Headers(init.headers);
|
||
} else if (input instanceof Request) {
|
||
headers = input.headers;
|
||
} else {
|
||
headers = new Headers();
|
||
}
|
||
|
||
const contentType = headers.get("content-type") || "";
|
||
super(b, { contentType });
|
||
this.headers = headers;
|
||
|
||
// readonly attribute ByteString method;
|
||
this.method = "GET";
|
||
|
||
// readonly attribute USVString url;
|
||
this.url = "";
|
||
|
||
// readonly attribute RequestCredentials credentials;
|
||
this.credentials = "omit";
|
||
|
||
if (input instanceof Request) {
|
||
if (input.bodyUsed) {
|
||
throw TypeError(BodyUsedError);
|
||
}
|
||
this.method = input.method;
|
||
this.url = input.url;
|
||
this.headers = new Headers(input.headers);
|
||
this.credentials = input.credentials;
|
||
this._stream = input._stream;
|
||
} else {
|
||
// TODO(nayeemrmn): Base from `--location` when implemented and set.
|
||
this.url = new URL(String(input)).href;
|
||
}
|
||
|
||
if (init && "method" in init) {
|
||
this.method = normalizeMethod(init.method);
|
||
}
|
||
|
||
if (
|
||
init &&
|
||
"credentials" in init &&
|
||
init.credentials &&
|
||
["omit", "same-origin", "include"].indexOf(init.credentials) !== -1
|
||
) {
|
||
this.credentials = init.credentials;
|
||
}
|
||
}
|
||
|
||
clone() {
|
||
if (this.bodyUsed) {
|
||
throw TypeError(BodyUsedError);
|
||
}
|
||
|
||
const iterators = this.headers.entries();
|
||
const headersList = [];
|
||
for (const header of iterators) {
|
||
headersList.push(header);
|
||
}
|
||
|
||
let body2 = this._bodySource;
|
||
|
||
if (this._bodySource instanceof ReadableStream) {
|
||
const tees = this._bodySource.tee();
|
||
this._stream = this._bodySource = tees[0];
|
||
body2 = tees[1];
|
||
}
|
||
|
||
return new Request(this.url, {
|
||
body: body2,
|
||
method: this.method,
|
||
headers: new Headers(headersList),
|
||
credentials: this.credentials,
|
||
});
|
||
}
|
||
}
|
||
|
||
const responseData = new WeakMap();
|
||
class Response extends Body {
|
||
constructor(body = null, init) {
|
||
init = init ?? {};
|
||
|
||
if (typeof init !== "object") {
|
||
throw new TypeError(`'init' is not an object`);
|
||
}
|
||
|
||
const extraInit = responseData.get(init) || {};
|
||
let { type = "default", url = "" } = extraInit;
|
||
|
||
let status = init.status === undefined ? 200 : Number(init.status || 0);
|
||
let statusText = init.statusText ?? "";
|
||
let headers = init.headers instanceof Headers
|
||
? init.headers
|
||
: new Headers(init.headers);
|
||
|
||
if (init.status !== undefined && (status < 200 || status > 599)) {
|
||
throw new RangeError(
|
||
`The status provided (${init.status}) is outside the range [200, 599]`,
|
||
);
|
||
}
|
||
|
||
// null body status
|
||
if (body && NULL_BODY_STATUS.includes(status)) {
|
||
throw new TypeError("Response with null body status cannot have body");
|
||
}
|
||
|
||
if (!type) {
|
||
type = "default";
|
||
} else {
|
||
if (type == "error") {
|
||
// spec: https://fetch.spec.whatwg.org/#concept-network-error
|
||
status = 0;
|
||
statusText = "";
|
||
headers = new Headers();
|
||
body = null;
|
||
/* spec for other Response types:
|
||
https://fetch.spec.whatwg.org/#concept-filtered-response-basic
|
||
Please note that type "basic" is not the same thing as "default".*/
|
||
} else if (type == "basic") {
|
||
for (const h of headers) {
|
||
/* Forbidden Response-Header Names:
|
||
https://fetch.spec.whatwg.org/#forbidden-response-header-name */
|
||
if (["set-cookie", "set-cookie2"].includes(h[0].toLowerCase())) {
|
||
headers.delete(h[0]);
|
||
}
|
||
}
|
||
} else if (type == "cors") {
|
||
/* CORS-safelisted Response-Header Names:
|
||
https://fetch.spec.whatwg.org/#cors-safelisted-response-header-name */
|
||
const allowedHeaders = [
|
||
"Cache-Control",
|
||
"Content-Language",
|
||
"Content-Length",
|
||
"Content-Type",
|
||
"Expires",
|
||
"Last-Modified",
|
||
"Pragma",
|
||
].map((c) => c.toLowerCase());
|
||
for (const h of headers) {
|
||
/* Technically this is still not standards compliant because we are
|
||
supposed to allow headers allowed in the
|
||
'Access-Control-Expose-Headers' header in the 'internal response'
|
||
However, this implementation of response doesn't seem to have an
|
||
easy way to access the internal response, so we ignore that
|
||
header.
|
||
TODO(serverhiccups): change how internal responses are handled
|
||
so we can do this properly. */
|
||
if (!allowedHeaders.includes(h[0].toLowerCase())) {
|
||
headers.delete(h[0]);
|
||
}
|
||
}
|
||
/* TODO(serverhiccups): Once I fix the 'internal response' thing,
|
||
these actually need to treat the internal response differently */
|
||
} else if (type == "opaque" || type == "opaqueredirect") {
|
||
url = "";
|
||
status = 0;
|
||
statusText = "";
|
||
headers = new Headers();
|
||
body = null;
|
||
}
|
||
}
|
||
|
||
const contentType = headers.get("content-type") || "";
|
||
const size = Number(headers.get("content-length")) || undefined;
|
||
|
||
super(body, { contentType, size });
|
||
|
||
this.url = url;
|
||
this.statusText = statusText;
|
||
this.status = extraInit.status || status;
|
||
this.headers = headers;
|
||
this.redirected = extraInit.redirected || false;
|
||
this.type = type;
|
||
}
|
||
|
||
get ok() {
|
||
return 200 <= this.status && this.status < 300;
|
||
}
|
||
|
||
clone() {
|
||
if (this.bodyUsed) {
|
||
throw TypeError(BodyUsedError);
|
||
}
|
||
|
||
const iterators = this.headers.entries();
|
||
const headersList = [];
|
||
for (const header of iterators) {
|
||
headersList.push(header);
|
||
}
|
||
|
||
let resBody = this._bodySource;
|
||
|
||
if (this._bodySource instanceof ReadableStream) {
|
||
const tees = this._bodySource.tee();
|
||
this._stream = this._bodySource = tees[0];
|
||
resBody = tees[1];
|
||
}
|
||
|
||
return new Response(resBody, {
|
||
status: this.status,
|
||
statusText: this.statusText,
|
||
headers: new Headers(headersList),
|
||
});
|
||
}
|
||
|
||
static redirect(url, status) {
|
||
if (![301, 302, 303, 307, 308].includes(status)) {
|
||
throw new RangeError(
|
||
"The redirection status must be one of 301, 302, 303, 307 and 308.",
|
||
);
|
||
}
|
||
return new Response(null, {
|
||
status,
|
||
statusText: "",
|
||
headers: [["Location", typeof url === "string" ? url : url.toString()]],
|
||
});
|
||
}
|
||
}
|
||
|
||
function sendFetchReq(url, method, headers, body, clientRid) {
|
||
let headerArray = [];
|
||
if (headers) {
|
||
headerArray = Array.from(headers.entries());
|
||
}
|
||
|
||
const args = {
|
||
method,
|
||
url,
|
||
headers: headerArray,
|
||
clientRid,
|
||
};
|
||
|
||
return opFetch(args, body);
|
||
}
|
||
|
||
async function fetch(input, init) {
|
||
let url;
|
||
let method = null;
|
||
let headers = null;
|
||
let body;
|
||
let clientRid = null;
|
||
let redirected = false;
|
||
let remRedirectCount = 20; // TODO: use a better way to handle
|
||
|
||
if (typeof input === "string" || input instanceof URL) {
|
||
url = typeof input === "string" ? input : input.href;
|
||
if (init != null) {
|
||
method = init.method || null;
|
||
if (init.headers) {
|
||
headers = init.headers instanceof Headers
|
||
? init.headers
|
||
: new Headers(init.headers);
|
||
} else {
|
||
headers = null;
|
||
}
|
||
|
||
// ref: https://fetch.spec.whatwg.org/#body-mixin
|
||
// Body should have been a mixin
|
||
// but we are treating it as a separate class
|
||
if (init.body) {
|
||
if (!headers) {
|
||
headers = new Headers();
|
||
}
|
||
let contentType = "";
|
||
if (typeof init.body === "string") {
|
||
body = new TextEncoder().encode(init.body);
|
||
contentType = "text/plain;charset=UTF-8";
|
||
} else if (isTypedArray(init.body)) {
|
||
body = init.body;
|
||
} else if (init.body instanceof ArrayBuffer) {
|
||
body = new Uint8Array(init.body);
|
||
} else if (init.body instanceof URLSearchParams) {
|
||
body = new TextEncoder().encode(init.body.toString());
|
||
contentType = "application/x-www-form-urlencoded;charset=UTF-8";
|
||
} else if (init.body instanceof Blob) {
|
||
body = init.body[bytesSymbol];
|
||
contentType = init.body.type;
|
||
} else if (init.body instanceof FormData) {
|
||
let boundary;
|
||
if (headers.has("content-type")) {
|
||
const params = getHeaderValueParams("content-type");
|
||
boundary = params.get("boundary");
|
||
}
|
||
const multipartBuilder = new MultipartBuilder(
|
||
init.body,
|
||
boundary,
|
||
);
|
||
body = multipartBuilder.getBody();
|
||
contentType = multipartBuilder.getContentType();
|
||
} else {
|
||
// TODO: ReadableStream
|
||
throw new Error("Not implemented");
|
||
}
|
||
if (contentType && !headers.has("content-type")) {
|
||
headers.set("content-type", contentType);
|
||
}
|
||
}
|
||
|
||
if (init.client instanceof HttpClient) {
|
||
clientRid = init.client.rid;
|
||
}
|
||
}
|
||
} else {
|
||
url = input.url;
|
||
method = input.method;
|
||
headers = input.headers;
|
||
|
||
if (input._bodySource) {
|
||
body = new DataView(await input.arrayBuffer());
|
||
}
|
||
}
|
||
|
||
let responseBody;
|
||
let responseInit = {};
|
||
while (remRedirectCount) {
|
||
const fetchResponse = await sendFetchReq(
|
||
url,
|
||
method,
|
||
headers,
|
||
body,
|
||
clientRid,
|
||
);
|
||
const rid = fetchResponse.bodyRid;
|
||
|
||
if (
|
||
NULL_BODY_STATUS.includes(fetchResponse.status) ||
|
||
REDIRECT_STATUS.includes(fetchResponse.status)
|
||
) {
|
||
// We won't use body of received response, so close it now
|
||
// otherwise it will be kept in resource table.
|
||
core.close(fetchResponse.bodyRid);
|
||
responseBody = null;
|
||
} else {
|
||
responseBody = new ReadableStream({
|
||
type: "bytes",
|
||
async pull(controller) {
|
||
try {
|
||
const result = await core.jsonOpAsync("op_fetch_read", { rid });
|
||
if (!result || !result.chunk) {
|
||
controller.close();
|
||
core.close(rid);
|
||
} else {
|
||
// TODO(ry) This is terribly inefficient. Make this zero-copy.
|
||
const chunk = new Uint8Array(result.chunk);
|
||
controller.enqueue(chunk);
|
||
}
|
||
} catch (e) {
|
||
controller.error(e);
|
||
controller.close();
|
||
core.close(rid);
|
||
}
|
||
},
|
||
cancel() {
|
||
// When reader.cancel() is called
|
||
core.close(rid);
|
||
},
|
||
});
|
||
}
|
||
|
||
responseInit = {
|
||
status: 200,
|
||
statusText: fetchResponse.statusText,
|
||
headers: fetchResponse.headers,
|
||
};
|
||
|
||
responseData.set(responseInit, {
|
||
redirected,
|
||
rid: fetchResponse.bodyRid,
|
||
status: fetchResponse.status,
|
||
url,
|
||
});
|
||
|
||
const response = new Response(responseBody, responseInit);
|
||
|
||
if (REDIRECT_STATUS.includes(fetchResponse.status)) {
|
||
// We're in a redirect status
|
||
switch ((init && init.redirect) || "follow") {
|
||
case "error":
|
||
responseInit = {};
|
||
responseData.set(responseInit, {
|
||
type: "error",
|
||
redirected: false,
|
||
url: "",
|
||
});
|
||
return new Response(null, responseInit);
|
||
case "manual":
|
||
responseInit = {};
|
||
responseData.set(responseInit, {
|
||
type: "opaqueredirect",
|
||
redirected: false,
|
||
url: "",
|
||
});
|
||
return new Response(null, responseInit);
|
||
case "follow":
|
||
default:
|
||
let redirectUrl = response.headers.get("Location");
|
||
if (redirectUrl == null) {
|
||
return response; // Unspecified
|
||
}
|
||
if (
|
||
!redirectUrl.startsWith("http://") &&
|
||
!redirectUrl.startsWith("https://")
|
||
) {
|
||
redirectUrl = new URL(redirectUrl, url).href;
|
||
}
|
||
url = redirectUrl;
|
||
redirected = true;
|
||
remRedirectCount--;
|
||
}
|
||
} else {
|
||
return response;
|
||
}
|
||
}
|
||
|
||
responseData.set(responseInit, {
|
||
type: "error",
|
||
redirected: false,
|
||
url: "",
|
||
});
|
||
|
||
return new Response(null, responseInit);
|
||
}
|
||
|
||
window.__bootstrap.fetch = {
|
||
Blob,
|
||
DomFile,
|
||
FormData,
|
||
fetch,
|
||
Request,
|
||
Response,
|
||
HttpClient,
|
||
createHttpClient,
|
||
};
|
||
})(this);
|