alexion
6081e3e325
Imported as a linear vendor commit so forge rebases do not replay the upstream root tree. git-subtree-dir: third_party/pi git-subtree-split: 71023aec1546d6d677a65669c5665c0927ce0dd0
49 lines
1.6 KiB
TypeScript
49 lines
1.6 KiB
TypeScript
/**
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* A stand-in for a daemon released before `hello.features`: it answers `hello` without `features` and refuses every
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* other operation as an unknown one, as such a daemon refuses `listFiles`. Started as `node old-daemon.ts serve --token
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* <hex>`.
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*/
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const token = process.argv[process.argv.indexOf("--token") + 1];
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process.stdout.write(`PI-ENV ${token}\n`);
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function send(type: number, id: number, json: Record<string, unknown>): void {
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const body = Buffer.from(JSON.stringify(json), "utf8");
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const header = Buffer.alloc(13);
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header.writeUInt32BE(9 + body.length, 0);
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header.writeUInt8(type, 4);
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header.writeUInt32BE(id, 5);
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header.writeUInt32BE(body.length, 9);
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process.stdout.write(Buffer.concat([header, body]));
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}
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let buffered = Buffer.alloc(0);
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process.stdin.on("data", (chunk: Buffer) => {
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buffered = Buffer.concat([buffered, chunk]);
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while (buffered.length >= 4 && buffered.length >= 4 + buffered.readUInt32BE(0)) {
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const length = buffered.readUInt32BE(0);
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const type = buffered.readUInt8(4);
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const id = buffered.readUInt32BE(5);
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const jsonLength = buffered.readUInt32BE(9);
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const json = JSON.parse(buffered.subarray(13, 13 + jsonLength).toString("utf8")) as { op?: string };
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buffered = buffered.subarray(4 + length);
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if (type !== 1) continue;
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if (json.op === "hello") {
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send(2, id, {
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protocol: 1,
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version: "1.1.0",
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os: "linux",
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arch: "x86_64",
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home: "/",
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separator: "/",
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tmpdir: "/tmp",
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cwd: "/",
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driveCwds: {},
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pid: process.pid,
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});
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} else {
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send(3, id, { code: "EINVAL", message: `unknown operation ${json.op}` });
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}
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}
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});
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process.stdin.on("end", () => process.exit(0));
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