34 lines
1.4 KiB
TypeScript
34 lines
1.4 KiB
TypeScript
// 沙箱子进程入口:先加载任务表,再撤销全部权限,然后从 stdin 读一条 {job, input},把 {ok, result | error} 写到 stdout。
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// 开发 / 测试由 deno run 直接跑本文件;编译二进制以 `<自身> --role sandbox` 拉起(main.ts 在加载其余模块前分派)。
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import { prepareJobs, SANDBOX_JOBS } from "./jobs.ts";
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const PERMISSIONS = ["read", "write", "net", "env", "run", "ffi", "sys"] as const;
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async function writeAll(bytes: Uint8Array) {
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let off = 0;
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while (off < bytes.length) off += await Deno.stdout.write(bytes.subarray(off));
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}
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export async function sandboxWorkerMain(): Promise<void> {
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await prepareJobs();
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for (const name of PERMISSIONS) {
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try {
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Deno.permissions.revokeSync({ name } as Deno.PermissionDescriptor);
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} catch {
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// 运行时不认识的权限名:跳过
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}
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}
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let out: unknown;
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try {
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const req = JSON.parse(await new Response(Deno.stdin.readable).text()) as { job: string; input: unknown };
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const fn = (SANDBOX_JOBS as Record<string, (i: unknown) => unknown>)[req.job];
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if (!fn) throw new Error(`没有这个沙箱任务：${req.job}`);
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out = { ok: true, result: await fn(req.input) };
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} catch (e) {
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out = { ok: false, error: `${(e as Error).name}: ${(e as Error).message}`.slice(0, 2000) };
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}
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await writeAll(new TextEncoder().encode(`${JSON.stringify(out)}\n`));
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}
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if (import.meta.main) await sandboxWorkerMain();
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