mirror of
https://github.com/denoland/deno.git
synced 2024-10-30 09:08:00 -04:00
412 lines
13 KiB
TypeScript
412 lines
13 KiB
TypeScript
// Copyright 2018 the Deno authors. All rights reserved. MIT license.
|
|
import { assert, createResolvable, notImplemented, isTypedArray } from "./util";
|
|
import * as flatbuffers from "./flatbuffers";
|
|
import { sendAsync } from "./dispatch";
|
|
import * as msg from "gen/msg_generated";
|
|
import * as domTypes from "./dom_types";
|
|
import { TextDecoder, TextEncoder } from "./text_encoding";
|
|
import { DenoBlob } from "./blob";
|
|
import { Headers } from "./headers";
|
|
import * as io from "./io";
|
|
import { read, close } from "./files";
|
|
import { Buffer } from "./buffer";
|
|
import { FormData } from "./form_data";
|
|
|
|
function getHeaderValueParams(value: string): Map<string, string> {
|
|
const params = new Map();
|
|
// Forced to do so for some Map constructor param mismatch
|
|
value
|
|
.split(";")
|
|
.slice(1)
|
|
.map(s => s.trim().split("="))
|
|
.filter(arr => arr.length > 1)
|
|
.map(([k, v]) => [k, v.replace(/^"([^"]*)"$/, "$1")])
|
|
.forEach(([k, v]) => params.set(k, v));
|
|
return params;
|
|
}
|
|
|
|
function hasHeaderValueOf(s: string, value: string) {
|
|
return new RegExp(`^${value}[\t\s]*;?`).test(s);
|
|
}
|
|
|
|
class Body implements domTypes.Body, domTypes.ReadableStream, io.ReadCloser {
|
|
bodyUsed = false;
|
|
private _bodyPromise: null | Promise<ArrayBuffer> = null;
|
|
private _data: ArrayBuffer | null = null;
|
|
readonly locked: boolean = false; // TODO
|
|
readonly body: null | Body = this;
|
|
|
|
constructor(private rid: number, readonly contentType: string) {}
|
|
|
|
private async _bodyBuffer(): Promise<ArrayBuffer> {
|
|
assert(this._bodyPromise == null);
|
|
const buf = new Buffer();
|
|
try {
|
|
const nread = await buf.readFrom(this);
|
|
const ui8 = buf.bytes();
|
|
assert(ui8.byteLength === nread);
|
|
this._data = ui8.buffer.slice(
|
|
ui8.byteOffset,
|
|
ui8.byteOffset + nread
|
|
) as ArrayBuffer;
|
|
assert(this._data.byteLength === nread);
|
|
} finally {
|
|
this.close();
|
|
}
|
|
|
|
return this._data;
|
|
}
|
|
|
|
async arrayBuffer(): Promise<ArrayBuffer> {
|
|
// If we've already bufferred the response, just return it.
|
|
if (this._data != null) {
|
|
return this._data;
|
|
}
|
|
|
|
// If there is no _bodyPromise yet, start it.
|
|
if (this._bodyPromise == null) {
|
|
this._bodyPromise = this._bodyBuffer();
|
|
}
|
|
|
|
return this._bodyPromise;
|
|
}
|
|
|
|
async blob(): Promise<domTypes.Blob> {
|
|
const arrayBuffer = await this.arrayBuffer();
|
|
return new DenoBlob([arrayBuffer], {
|
|
type: this.contentType
|
|
});
|
|
}
|
|
|
|
// ref: https://fetch.spec.whatwg.org/#body-mixin
|
|
async formData(): Promise<domTypes.FormData> {
|
|
const formData = new FormData();
|
|
const enc = new TextEncoder();
|
|
if (hasHeaderValueOf(this.contentType, "multipart/form-data")) {
|
|
const params = getHeaderValueParams(this.contentType);
|
|
if (!params.has("boundary")) {
|
|
// TypeError is required by spec
|
|
throw new TypeError("multipart/form-data must provide a boundary");
|
|
}
|
|
// ref: https://tools.ietf.org/html/rfc2046#section-5.1
|
|
const boundary = params.get("boundary")!;
|
|
const dashBoundary = `--${boundary}`;
|
|
const delimiter = `\r\n${dashBoundary}`;
|
|
const closeDelimiter = `${delimiter}--`;
|
|
|
|
const body = await this.text();
|
|
let bodyParts: string[];
|
|
const bodyEpilogueSplit = body.split(closeDelimiter);
|
|
if (bodyEpilogueSplit.length < 2) {
|
|
bodyParts = [];
|
|
} else {
|
|
// discard epilogue
|
|
const bodyEpilogueTrimmed = bodyEpilogueSplit[0];
|
|
// first boundary treated special due to optional prefixed \r\n
|
|
const firstBoundaryIndex = bodyEpilogueTrimmed.indexOf(dashBoundary);
|
|
if (firstBoundaryIndex < 0) {
|
|
throw new TypeError("Invalid boundary");
|
|
}
|
|
const bodyPreambleTrimmed = bodyEpilogueTrimmed
|
|
.slice(firstBoundaryIndex + dashBoundary.length)
|
|
.replace(/^[\s\r\n\t]+/, ""); // remove transport-padding CRLF
|
|
// trimStart might not be available
|
|
// Be careful! body-part allows trailing \r\n!
|
|
// (as long as it is not part of `delimiter`)
|
|
bodyParts = bodyPreambleTrimmed
|
|
.split(delimiter)
|
|
.map(s => s.replace(/^[\s\r\n\t]+/, ""));
|
|
// TODO: LWSP definition is actually trickier,
|
|
// but should be fine in our case since without headers
|
|
// we should just discard the part
|
|
}
|
|
for (const bodyPart of bodyParts) {
|
|
const headers = new Headers();
|
|
const headerOctetSeperatorIndex = bodyPart.indexOf("\r\n\r\n");
|
|
if (headerOctetSeperatorIndex < 0) {
|
|
continue; // Skip unknown part
|
|
}
|
|
const headerText = bodyPart.slice(0, headerOctetSeperatorIndex);
|
|
const octets = bodyPart.slice(headerOctetSeperatorIndex + 4);
|
|
|
|
// TODO: use textproto.readMIMEHeader from deno_std
|
|
const rawHeaders = headerText.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);
|
|
}
|
|
if (!headers.has("content-disposition")) {
|
|
continue; // Skip unknown part
|
|
}
|
|
// Content-Transfer-Encoding Deprecated
|
|
const contentDisposition = headers.get("content-disposition")!;
|
|
const partContentType = headers.get("content-type") || "text/plain";
|
|
// TODO: custom charset encoding (needs TextEncoder support)
|
|
// const contentTypeCharset =
|
|
// getHeaderValueParams(partContentType).get("charset") || "";
|
|
if (!hasHeaderValueOf(contentDisposition, "form-data")) {
|
|
continue; // Skip, might not be form-data
|
|
}
|
|
const dispositionParams = getHeaderValueParams(contentDisposition);
|
|
if (!dispositionParams.has("name")) {
|
|
continue; // Skip, unknown name
|
|
}
|
|
const dispositionName = dispositionParams.get("name")!;
|
|
if (dispositionParams.has("filename")) {
|
|
const filename = dispositionParams.get("filename")!;
|
|
const blob = new DenoBlob([enc.encode(octets)], {
|
|
type: partContentType
|
|
});
|
|
// TODO: based on spec
|
|
// https://xhr.spec.whatwg.org/#dom-formdata-append
|
|
// https://xhr.spec.whatwg.org/#create-an-entry
|
|
// Currently it does not meantion how I could pass content-type
|
|
// to the internally created file object...
|
|
formData.append(dispositionName, blob, filename);
|
|
} else {
|
|
formData.append(dispositionName, octets);
|
|
}
|
|
}
|
|
return formData;
|
|
} 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");
|
|
}
|
|
}
|
|
|
|
// tslint:disable-next-line:no-any
|
|
async json(): Promise<any> {
|
|
const text = await this.text();
|
|
return JSON.parse(text);
|
|
}
|
|
|
|
async text(): Promise<string> {
|
|
const ab = await this.arrayBuffer();
|
|
const decoder = new TextDecoder("utf-8");
|
|
return decoder.decode(ab);
|
|
}
|
|
|
|
read(p: Uint8Array): Promise<io.ReadResult> {
|
|
return read(this.rid, p);
|
|
}
|
|
|
|
close(): void {
|
|
close(this.rid);
|
|
}
|
|
|
|
async cancel(): Promise<void> {
|
|
return notImplemented();
|
|
}
|
|
|
|
getReader(): domTypes.ReadableStreamReader {
|
|
return notImplemented();
|
|
}
|
|
}
|
|
|
|
class Response implements domTypes.Response {
|
|
readonly url: string = "";
|
|
statusText = "FIXME"; // TODO
|
|
readonly type = "basic"; // TODO
|
|
redirected = false; // TODO
|
|
headers: domTypes.Headers;
|
|
readonly trailer: Promise<domTypes.Headers>;
|
|
bodyUsed = false;
|
|
readonly body: Body;
|
|
|
|
constructor(
|
|
readonly status: number,
|
|
headersList: Array<[string, string]>,
|
|
rid: number,
|
|
body_: null | Body = null
|
|
) {
|
|
this.trailer = createResolvable();
|
|
this.headers = new Headers(headersList);
|
|
const contentType = this.headers.get("content-type") || "";
|
|
|
|
if (body_ == null) {
|
|
this.body = new Body(rid, contentType);
|
|
} else {
|
|
this.body = body_;
|
|
}
|
|
}
|
|
|
|
async arrayBuffer(): Promise<ArrayBuffer> {
|
|
return this.body.arrayBuffer();
|
|
}
|
|
|
|
async blob(): Promise<domTypes.Blob> {
|
|
return this.body.blob();
|
|
}
|
|
|
|
async formData(): Promise<domTypes.FormData> {
|
|
return this.body.formData();
|
|
}
|
|
|
|
// tslint:disable-next-line:no-any
|
|
async json(): Promise<any> {
|
|
return this.body.json();
|
|
}
|
|
|
|
async text(): Promise<string> {
|
|
return this.body.text();
|
|
}
|
|
|
|
get ok(): boolean {
|
|
return 200 <= this.status && this.status < 300;
|
|
}
|
|
|
|
clone(): domTypes.Response {
|
|
if (this.bodyUsed) {
|
|
throw new TypeError(
|
|
"Failed to execute 'clone' on 'Response': Response body is already used"
|
|
);
|
|
}
|
|
|
|
const iterators = this.headers.entries();
|
|
const headersList: Array<[string, string]> = [];
|
|
for (const header of iterators) {
|
|
headersList.push(header);
|
|
}
|
|
|
|
return new Response(this.status, headersList, -1, this.body);
|
|
}
|
|
}
|
|
|
|
function msgHttpRequest(
|
|
builder: flatbuffers.Builder,
|
|
url: string,
|
|
method: null | string,
|
|
headers: null | domTypes.Headers
|
|
): flatbuffers.Offset {
|
|
const methodOffset = !method ? -1 : builder.createString(method);
|
|
let fieldsOffset: flatbuffers.Offset = -1;
|
|
const urlOffset = builder.createString(url);
|
|
if (headers) {
|
|
const kvOffsets: flatbuffers.Offset[] = [];
|
|
for (const [key, val] of headers.entries()) {
|
|
const keyOffset = builder.createString(key);
|
|
const valOffset = builder.createString(val);
|
|
msg.KeyValue.startKeyValue(builder);
|
|
msg.KeyValue.addKey(builder, keyOffset);
|
|
msg.KeyValue.addValue(builder, valOffset);
|
|
kvOffsets.push(msg.KeyValue.endKeyValue(builder));
|
|
}
|
|
fieldsOffset = msg.HttpHeader.createFieldsVector(builder, kvOffsets);
|
|
} else {
|
|
}
|
|
msg.HttpHeader.startHttpHeader(builder);
|
|
msg.HttpHeader.addIsRequest(builder, true);
|
|
msg.HttpHeader.addUrl(builder, urlOffset);
|
|
if (methodOffset >= 0) {
|
|
msg.HttpHeader.addMethod(builder, methodOffset);
|
|
}
|
|
if (fieldsOffset >= 0) {
|
|
msg.HttpHeader.addFields(builder, fieldsOffset);
|
|
}
|
|
return msg.HttpHeader.endHttpHeader(builder);
|
|
}
|
|
|
|
/** Fetch a resource from the network. */
|
|
export async function fetch(
|
|
input: domTypes.Request | string,
|
|
init?: domTypes.RequestInit
|
|
): Promise<Response> {
|
|
let url: string;
|
|
let method: string | null = null;
|
|
let headers: domTypes.Headers | null = null;
|
|
let body: ArrayBufferView | undefined;
|
|
|
|
if (typeof input === "string") {
|
|
url = input;
|
|
if (init != null) {
|
|
method = init.method || null;
|
|
if (init.headers) {
|
|
headers =
|
|
init.headers instanceof Headers
|
|
? init.headers
|
|
: new Headers(init.headers);
|
|
} else {
|
|
headers = null;
|
|
}
|
|
|
|
if (init.body) {
|
|
if (typeof init.body === "string") {
|
|
body = new TextEncoder().encode(init.body);
|
|
} else if (isTypedArray(init.body)) {
|
|
body = init.body;
|
|
} else {
|
|
notImplemented();
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
url = input.url;
|
|
method = input.method;
|
|
headers = input.headers;
|
|
}
|
|
|
|
// Send Fetch message
|
|
const builder = flatbuffers.createBuilder();
|
|
const headerOff = msgHttpRequest(builder, url, method, headers);
|
|
msg.Fetch.startFetch(builder);
|
|
msg.Fetch.addHeader(builder, headerOff);
|
|
const resBase = await sendAsync(
|
|
builder,
|
|
msg.Any.Fetch,
|
|
msg.Fetch.endFetch(builder),
|
|
body
|
|
);
|
|
|
|
// Decode FetchRes
|
|
assert(msg.Any.FetchRes === resBase.innerType());
|
|
const inner = new msg.FetchRes();
|
|
assert(resBase.inner(inner) != null);
|
|
|
|
const header = inner.header()!;
|
|
const bodyRid = inner.bodyRid();
|
|
assert(!header.isRequest());
|
|
const status = header.status();
|
|
|
|
const headersList = deserializeHeaderFields(header);
|
|
|
|
const response = new Response(status, headersList, bodyRid);
|
|
return response;
|
|
}
|
|
|
|
function deserializeHeaderFields(m: msg.HttpHeader): Array<[string, string]> {
|
|
const out: Array<[string, string]> = [];
|
|
for (let i = 0; i < m.fieldsLength(); i++) {
|
|
const item = m.fields(i)!;
|
|
out.push([item.key()!, item.value()!]);
|
|
}
|
|
return out;
|
|
}
|