50 lines
1.1 KiB
JavaScript
50 lines
1.1 KiB
JavaScript
import { spawn } from "child_process";
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import { promises as fs } from "fs";
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import process from "process";
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import { quote } from "shell-quote";
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import { getUUID } from "./util.js";
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import {
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privilegedSetup,
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privilegedSpawn,
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privilegedTeardown,
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run,
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} from "./util.js";
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function die(msg) {
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console.error(msg);
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process.exit(1);
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}
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function log(msg) {
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console.log(msg);
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}
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async function main() {
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const sandboxScript = await fs.readFile("backend/sandbox.bash", "utf-8");
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const lang = process.env.L;
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if (!lang) {
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die("environment variable unset: $L");
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}
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const uuid = getUUID();
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await run(privilegedSetup({ uuid }), log);
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const args = privilegedSpawn({ uuid }, [
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"bash",
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"-c",
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`exec env L='${lang}' bash --rcfile <(cat <<< ${quote([sandboxScript])})`,
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]);
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const proc = spawn(args[0], args.slice(1), {
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stdio: "inherit",
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});
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await new Promise((resolve, reject) => {
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proc.on("error", reject);
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proc.on("close", resolve);
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});
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await run(privilegedTeardown({ uuid }), log);
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await returnUser();
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}
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main().catch(die);
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