53 lines
2.4 KiB
JavaScript
53 lines
2.4 KiB
JavaScript
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"use strict";
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const fs = require("node:fs");
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const net = require("node:net");
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const { execFile } = require("node:child_process");
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const SOCKET_PATH = process.env.LAKE_LAMP_ACTION_SOCKET || "/run/guanghu/action-broker.sock";
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const SSH_CONFIG = process.env.LAKE_LAMP_SSH_CONFIG || "/etc/guanghu/action-broker-ssh-config";
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const ACTIONS = Object.freeze({
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"JD-FD-PRIMARY:inspect-services": () => run("/usr/bin/ssh", [
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"-F", SSH_CONFIG,
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"-o", "BatchMode=yes",
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"-o", "ConnectTimeout=10",
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"enterprise-lighthouse",
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"printf 'HOST='; hostname; printf 'SSH='; systemctl is-active ssh 2>/dev/null || systemctl is-active sshd 2>/dev/null; printf 'LIGHTHOUSE='; systemctl is-active guanghu-enterprise-lighthouse.service 2>/dev/null || true"
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])
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});
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function run(file, args) {
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return new Promise(resolve => execFile(file, args, { timeout: 30000, maxBuffer: 100000 }, (error, stdout, stderr) => resolve({
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ok: !error,
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exit_code: error ? (Number.isInteger(error.code) ? error.code : 1) : 0,
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stdout: String(stdout || "").slice(0, 100000),
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stderr: String(stderr || "").slice(0, 10000),
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})));
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}
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function reply(socket, value) { socket.end(`${JSON.stringify(value)}\n`); }
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if (require.main === module) {
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fs.mkdirSync(require("node:path").dirname(SOCKET_PATH), { recursive: true, mode: 0o755 });
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try { fs.unlinkSync(SOCKET_PATH); } catch (error) { if (error.code !== "ENOENT") throw error; }
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const server = net.createServer({ allowHalfOpen: true }, socket => {
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let input = "";
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socket.setTimeout(5000, () => socket.destroy());
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socket.on("data", chunk => { input += chunk.toString("utf8"); if (input.length > 4096) socket.destroy(); });
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socket.on("end", async () => {
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let request;
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try { request = JSON.parse(input); } catch { return reply(socket, { ok: false, error: "invalid_request" }); }
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if (!request || request.cmd || request.command || request.shell || request.args) return reply(socket, { ok: false, error: "arbitrary_command_forbidden" });
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const action = ACTIONS[`${request.target}:${request.action}`];
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if (!action) return reply(socket, { ok: false, error: "action_not_registered" });
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reply(socket, await action());
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});
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});
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server.listen(SOCKET_PATH, () => {
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fs.chownSync(SOCKET_PATH, 0, Number(process.env.LAKE_LAMP_AUTHZ_GID || 0));
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fs.chmodSync(SOCKET_PATH, 0o660);
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});
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}
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module.exports = { ACTIONS };
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