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harden-runner/src/cleanup.ts
2026-04-25 17:29:39 +02:00

349 lines
8.8 KiB
TypeScript

import * as fs from "fs";
import * as common from "./common";
import * as cp from "child_process";
import * as path from "path";
import isDocker from "is-docker";
import { isARCRunner } from "./arc-runner";
import { isGithubHosted } from "./tls-inspect";
import { context } from "@actions/github";
import { isPlatformSupported, isAgentInstalled, detectThirdPartyRunnerProvider } from "./utils";
(async () => {
console.log("[harden-runner] post-step");
const customProperties = context?.payload?.repository?.custom_properties || {};
if (customProperties["skip-harden-runner"] === "true") {
console.log("Skipping harden-runner: custom property 'skip-harden-runner' is set to 'true'");
return;
}
if (!isPlatformSupported(process.platform)) {
console.log(common.UNSUPPORTED_RUNNER_MESSAGE);
return;
}
if (isGithubHosted() && isDocker()) {
console.log(common.CONTAINER_MESSAGE);
return;
}
if (isGithubHosted() && process.platform === "linux" && !process.env.USER) {
console.log(common.UBUNTU_SLIM_MESSAGE);
return;
}
if (isARCRunner()) {
console.log(`[!] ${common.ARC_RUNNER_MESSAGE}`);
return;
}
const thirdPartyProvider = detectThirdPartyRunnerProvider();
if (process.env.STATE_selfHosted === "true") {
return;
}
if (process.env.STATE_customVMImage === "true") {
return;
}
if (
String(process.env.STATE_monitorStatusCode) ===
common.STATUS_HARDEN_RUNNER_UNAVAILABLE
) {
console.log(common.HARDEN_RUNNER_UNAVAILABLE_MESSAGE);
return;
}
switch (process.platform) {
case "linux":
if (thirdPartyProvider) {
await handleAgentBravoCleanup();
} else {
await handleLinuxCleanup();
}
break;
case "win32":
await handleWindowsCleanup();
break;
case "darwin":
await handleMacosCleanup();
break;
}
try {
await common.addSummary();
} catch (exception) {
console.log(exception);
}
})();
async function handleAgentBravoCleanup() {
cp.execFileSync("/usr/bin/echo", ["step_policy_jobend"]);
const doneFile = "/home/agent/done.json";
let counter = 0;
while (true) {
if (!fs.existsSync(doneFile)) {
counter++;
if (counter > 10) {
console.log("timed out");
break;
}
await sleep(1000);
} else {
console.log(fs.readFileSync(doneFile, "utf-8"));
break;
}
}
const log = "/home/agent/agent.log";
if (fs.existsSync(log)) {
console.log("log:");
console.log(fs.readFileSync(log, "utf-8"));
}
const status = "/home/agent/agent.status";
if (fs.existsSync(status)) {
console.log("status:");
console.log(fs.readFileSync(status, "utf-8"));
}
}
async function handleLinuxCleanup() {
if (process.env.STATE_isTLS === "false" && process.arch === "arm64") {
return;
}
if (isGithubHosted() && fs.existsSync("/home/agent/post_event.json")) {
console.log("Post step already executed, skipping");
return;
}
fs.writeFileSync(
"/home/agent/post_event.json",
JSON.stringify({ event: "post" })
);
const doneFile = "/home/agent/done.json";
let counter = 0;
while (true) {
if (!fs.existsSync(doneFile)) {
counter++;
if (counter > 10) {
console.log("timed out");
break;
}
await sleep(1000);
} else {
// The file *does* exist
break;
}
}
const log = "/home/agent/agent.log";
if (fs.existsSync(log)) {
console.log("log:");
var content = fs.readFileSync(log, "utf-8");
console.log(content);
}
const daemonLog = "/home/agent/daemon.log";
if (fs.existsSync(daemonLog)) {
console.log("daemonLog:");
var content = fs.readFileSync(daemonLog, "utf-8");
console.log(content);
}
var status = "/home/agent/agent.status";
if (fs.existsSync(status)) {
console.log("status:");
var content = fs.readFileSync(status, "utf-8");
console.log(content);
}
var disable_sudo = process.env.STATE_disableSudo;
var disable_sudo_and_containers = process.env.STATE_disableSudoAndContainers;
if (disable_sudo !== "true" && disable_sudo_and_containers !== "true") {
try {
var journalLog = cp.execSync(
"sudo journalctl -u agent.service --lines=1000",
{
encoding: "utf8",
maxBuffer: 1024 * 1024 * 10, // 10MB buffer
}
);
console.log("agent.service log:");
console.log(journalLog);
} catch (error) {
console.log("Warning: Could not fetch service logs:", error.message);
}
}
}
async function handleMacosCleanup() {
const post_event = "/opt/step-security/post_event.json";
if (isGithubHosted() && fs.existsSync(post_event)) {
console.log("Post step already executed, skipping");
return;
}
fs.writeFileSync(post_event, JSON.stringify({ event: "post" }));
// if agent is installed; wait for it to create done.json
if (isAgentInstalled(process.platform)) {
let macDone = "/opt/step-security/done.json";
let counter = 0;
while (true) {
if (!fs.existsSync(macDone)) {
counter++;
if (counter > 10) {
console.log("timed out");
break;
}
await sleep(1000);
} else {
// The file *does* exist
break;
}
}
}
let macAgentLog = "/opt/step-security/agent.log";
if (fs.existsSync(macAgentLog)) {
console.log("macAgentLog:");
var content = fs.readFileSync(macAgentLog, "utf-8");
console.log(content);
} else {
console.log("😭 macos agent.log file not found");
}
// Capture system log stream for harden-runner subsystem
try {
console.log("\nSystem log stream for io.stepsecurity.harden-runner:");
const logStreamOutput = cp.execSync(
"log show --predicate 'subsystem == \"io.stepsecurity.harden-runner\"' --info --last 10m",
{
encoding: "utf8",
maxBuffer: 1024 * 1024 * 10, // 10MB buffer
timeout: 5000, // 5 seconds timeout
}
);
console.log(logStreamOutput);
} catch (error) {
console.log("Warning: Could not fetch system log stream:", error.message);
}
}
async function handleWindowsCleanup() {
// windows cleanup
const agentDir = process.env.STATE_agentDir || "C:\\agent";
const postEventFile = path.join(agentDir, "post_event.json");
if (isGithubHosted() && fs.existsSync(postEventFile)) {
console.log("Windows post step already executed, skipping");
return;
}
if (process.arch === "arm64") {
console.log(common.ARM64_WINDOWS_RUNNER_MESSAGE);
return;
}
const p = cp.spawn(
"powershell.exe",
[
"-NoProfile",
"-NonInteractive",
"-Command",
"query user; exit $LASTEXITCODE",
],
{ stdio: ["ignore", "pipe", "pipe"], shell: false, windowsHide: true }
);
p.unref();
fs.writeFileSync(postEventFile, JSON.stringify({ event: "post" }));
// if agent is installed; wait for it to create done.json
if (isAgentInstalled(process.platform)) {
const doneFile = path.join(agentDir, "done.json");
let counter = 0;
while (true) {
if (!fs.existsSync(doneFile)) {
counter++;
if (counter > 10) {
console.log("timed out");
break;
}
await sleep(1000);
} else {
break;
}
}
}
console.log("stopping windows agent process...");
const pidFile = path.join(agentDir, "agent.pid");
try {
if (!fs.existsSync(pidFile)) {
console.log("PID file not found. Agent may not be running.");
return;
}
const pid = parseInt(fs.readFileSync(pidFile, "utf8").trim());
console.log(`agent PID from file: ${pid}`);
try {
process.kill(pid, 0); // signal 0 just checks if process exists
} catch {
console.log("agent process not running.");
fs.unlinkSync(pidFile);
return;
}
console.log(`stopping agent process (PID: ${pid})...`);
process.kill(pid, "SIGINT");
let gracefulShutdown = false;
for (let i = 0; i < 10; i++) {
await sleep(1000);
try {
process.kill(pid, 0); // check if still exists
} catch {
gracefulShutdown = true;
console.log("agent process stopped gracefully");
break;
}
}
if (!gracefulShutdown) {
console.log("graceful shutdown timeout (10s), forcing termination...");
process.kill(pid, "SIGKILL");
console.log("agent process terminated forcefully");
}
if (fs.existsSync(pidFile)) {
fs.unlinkSync(pidFile);
console.log("PID file cleaned up");
}
} catch (error) {
console.log("warning: error stopping agent process:", error.message);
}
const log = path.join(agentDir, "agent.log");
if (fs.existsSync(log)) {
console.log("agent log:");
const content = fs.readFileSync(log, "utf-8");
console.log(content);
}
}
function sleep(ms) {
return new Promise((resolve) => {
setTimeout(resolve, ms);
});
}