59 lines
1.6 KiB
TypeScript
59 lines
1.6 KiB
TypeScript
import { init } from "https://esm.sh/v131/node_events.js";
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import type {
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ProxyFetchRequest,
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ProxyFetchResponse,
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} from "../../common/proxy_fetch.ts";
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import {
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base64Decode,
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base64Encode,
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} from "../../plugos/asset_bundle/base64.ts";
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export async function sandboxFetch(
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reqInfo: RequestInfo,
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options?: ProxyFetchRequest,
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): Promise<ProxyFetchResponse> {
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if (typeof reqInfo !== "string") {
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// Request as first argument, let's deconstruct it
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// console.log("fetch", reqInfo);
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options = {
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method: reqInfo.method,
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headers: Object.fromEntries(reqInfo.headers.entries()),
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base64Body: reqInfo.body
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? base64Encode(
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new Uint8Array(await (new Response(reqInfo.body)).arrayBuffer()),
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)
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: undefined,
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};
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reqInfo = reqInfo.url;
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}
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// @ts-ignore: monkey patching fetch
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return syscall("sandboxFetch.fetch", reqInfo, options);
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}
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export function monkeyPatchFetch() {
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// @ts-ignore: monkey patching fetch
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globalThis.nativeFetch = globalThis.fetch;
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// @ts-ignore: monkey patching fetch
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globalThis.fetch = async function (
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reqInfo: RequestInfo,
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init?: RequestInit,
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): Promise<Response> {
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const r = await sandboxFetch(
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reqInfo,
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init && {
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method: init.method,
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headers: init.headers as Record<string, string>,
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base64Body: init.body
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? base64Encode(
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new Uint8Array(await (new Response(init.body)).arrayBuffer()),
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)
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: undefined,
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},
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);
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return new Response(r.base64Body ? base64Decode(r.base64Body) : null, {
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status: r.status,
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headers: r.headers,
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});
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};
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}
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