feat: add native Codex hook integration

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ZacharyZhang-NY committed 2026-07-19 02:15:40 -04:00
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import assert from 'node:assert/strict';
import { spawn } from 'node:child_process';
import { mkdtemp, mkdir, readFile, rm, writeFile } from 'node:fs/promises';
import os from 'node:os';
import path from 'node:path';
import test from 'node:test';
import { pathToFileURL } from 'node:url';
const pluginModuleUrl = pathToFileURL(path.resolve('dist/plugins/codex.js')).href;
const registryModuleUrl = pathToFileURL(path.resolve('dist/plugins/registry.js')).href;
function runNode(args, env, input = '') {
return new Promise((resolve, reject) => {
const child = spawn(process.execPath, args, {
env: { ...process.env, ...env },
stdio: ['pipe', 'pipe', 'pipe'],
});
let stdout = '';
let stderr = '';
child.stdout.on('data', (chunk) => { stdout += chunk; });
child.stderr.on('data', (chunk) => { stderr += chunk; });
child.once('error', reject);
child.once('close', (code) => resolve({ code, stdout, stderr }));
child.stdin.end(input);
});
}
function runCommand(command, input = '') {
return new Promise((resolve, reject) => {
const child = spawn(command, {
shell: true,
stdio: ['pipe', 'pipe', 'pipe'],
});
let stdout = '';
let stderr = '';
child.stdout.on('data', (chunk) => { stdout += chunk; });
child.stderr.on('data', (chunk) => { stderr += chunk; });
child.once('error', reject);
child.once('close', (code) => resolve({ code, stdout, stderr }));
child.stdin.end(input);
});
}
function findHandler(settings, event, statusMessage) {
for (const group of settings.hooks?.[event] ?? []) {
const handler = group.hooks?.find((item) => item.statusMessage === statusMessage);
if (handler) return handler;
}
return undefined;
}
async function runPlugin(homeDir, method, argument) {
const script = `
import { codexPlugin } from ${JSON.stringify(pluginModuleUrl)};
const argument = JSON.parse(process.env.ELYDORA_TEST_ARGUMENT);
const result = await codexPlugin[process.env.ELYDORA_TEST_METHOD](argument);
if (result !== undefined) console.log(JSON.stringify(result));
`;
return runNode(
['--input-type=module', '--eval', script],
{
HOME: homeDir,
USERPROFILE: homeDir,
ELYDORA_TEST_ARGUMENT: JSON.stringify(argument),
ELYDORA_TEST_METHOD: method,
},
);
}
async function createFixture({ guardSource, hookSource, existingSettings } = {}) {
const homeDir = await mkdtemp(path.join(os.tmpdir(), 'elydora-codex-'));
const agentDir = path.join(homeDir, '.elydora', 'agent-1');
const configDir = path.join(homeDir, '.codex');
await mkdir(agentDir, { recursive: true });
await mkdir(configDir, { recursive: true });
const guardScriptPath = path.join(agentDir, 'guard.js');
const hookScriptPath = path.join(agentDir, 'hook.js');
await writeFile(
guardScriptPath,
guardSource ?? "process.stderr.write('Agent is frozen by Elydora.'); process.exit(2);\n",
);
await writeFile(hookScriptPath, hookSource ?? 'process.exit(0);\n');
await writeFile(path.join(agentDir, 'config.json'), JSON.stringify({
agent_id: 'agent-1',
agent_name: 'codex',
}));
const configPath = path.join(configDir, 'hooks.json');
if (existingSettings !== undefined) {
await writeFile(configPath, typeof existingSettings === 'string'
? existingSettings
: JSON.stringify(existingSettings, null, 2));
}
const installResult = await runPlugin(homeDir, 'install', {
agentName: 'codex',
agentId: 'agent-1',
baseUrl: 'https://api.elydora.com',
guardScriptPath,
hookScriptPath,
});
return {
agentDir,
configPath,
guardScriptPath,
homeDir,
hookScriptPath,
installResult,
async close() {
await rm(homeDir, { recursive: true, force: true });
},
};
}
test('Codex is registered as a native hook integration', async () => {
const { SUPPORTED_AGENTS } = await import(registryModuleUrl);
assert.deepEqual(SUPPORTED_AGENTS.get('codex'), {
name: 'OpenAI Codex',
configDir: '~/.codex',
configFile: 'hooks.json',
});
});
test('Codex install preserves existing hooks and is idempotent', async () => {
const existing = {
description: 'Workspace hooks',
hooks: {
SessionStart: [{ hooks: [{ type: 'command', command: 'existing-command' }] }],
},
};
const fixture = await createFixture({ existingSettings: existing });
try {
assert.equal(fixture.installResult.code, 0, fixture.installResult.stderr);
assert.match(fixture.installResult.stdout, /run \/hooks to review and trust/i);
const secondInstall = await runPlugin(fixture.homeDir, 'install', {
agentName: 'codex',
agentId: 'agent-1',
baseUrl: 'https://api.elydora.com',
guardScriptPath: fixture.guardScriptPath,
hookScriptPath: fixture.hookScriptPath,
});
assert.equal(secondInstall.code, 0, secondInstall.stderr);
const settings = JSON.parse(await readFile(fixture.configPath, 'utf-8'));
assert.equal(settings.description, 'Workspace hooks');
assert.equal(settings.hooks.SessionStart[0].hooks[0].command, 'existing-command');
assert.equal(settings.hooks.PreToolUse.length, 1);
assert.equal(settings.hooks.PostToolUse.length, 1);
assert.equal(settings.hooks.PreToolUse[0].matcher, '*');
assert.equal(settings.hooks.PostToolUse[0].matcher, '*');
} finally {
await fixture.close();
}
});
test('Codex hook commands enforce freezes and forward the official event payload', async () => {
const capturePath = path.join(os.tmpdir(), `elydora-codex-event-${process.pid}-${Date.now()}.json`);
const hookSource = `
const fs = require('node:fs');
const chunks = [];
process.stdin.on('data', (chunk) => chunks.push(chunk));
process.stdin.on('end', () => fs.writeFileSync(${JSON.stringify(capturePath)}, Buffer.concat(chunks)));
`;
const fixture = await createFixture({ hookSource });
try {
assert.equal(fixture.installResult.code, 0, fixture.installResult.stderr);
const settings = JSON.parse(await readFile(fixture.configPath, 'utf-8'));
const guard = findHandler(settings, 'PreToolUse', 'Checking Elydora agent state');
const audit = findHandler(settings, 'PostToolUse', 'Recording Elydora tool use');
assert(guard);
assert(audit);
const commandKey = process.platform === 'win32' ? 'commandWindows' : 'command';
const guardResult = await runCommand(guard[commandKey], JSON.stringify({
hook_event_name: 'PreToolUse',
session_id: 'session-1',
tool_name: 'Bash',
tool_input: { command: 'echo test' },
}));
assert.equal(guardResult.code, 2);
assert.match(guardResult.stderr, /Agent is frozen by Elydora/);
const payload = {
hook_event_name: 'PostToolUse',
session_id: 'session-1',
tool_name: 'Bash',
tool_use_id: 'call-1',
tool_input: { command: 'echo test' },
tool_response: { output: 'test' },
};
const auditResult = await runCommand(audit[commandKey], JSON.stringify(payload));
assert.equal(auditResult.code, 0, auditResult.stderr);
assert.deepEqual(JSON.parse(await readFile(capturePath, 'utf-8')), payload);
} finally {
await fixture.close();
await rm(capturePath, { force: true });
}
});
test('Codex status requires both runtime scripts and uninstall preserves other hooks', async () => {
const fixture = await createFixture({ existingSettings: {
hooks: { PreToolUse: [{ hooks: [{ type: 'command', command: 'existing-command' }] }] },
} });
try {
assert.equal(fixture.installResult.code, 0, fixture.installResult.stderr);
const status = await runPlugin(fixture.homeDir, 'status', null);
assert.equal(status.code, 0, status.stderr);
assert.equal(JSON.parse(status.stdout).installed, true);
await rm(fixture.guardScriptPath);
const degradedStatus = await runPlugin(fixture.homeDir, 'status', null);
assert.equal(JSON.parse(degradedStatus.stdout).installed, false);
const uninstall = await runPlugin(fixture.homeDir, 'uninstall', 'agent-1');
assert.equal(uninstall.code, 0, uninstall.stderr);
const settings = JSON.parse(await readFile(fixture.configPath, 'utf-8'));
assert.equal(settings.hooks.PreToolUse.length, 1);
assert.equal(settings.hooks.PreToolUse[0].hooks[0].command, 'existing-command');
assert.deepEqual(settings.hooks.PostToolUse, []);
} finally {
await fixture.close();
}
});
test('Codex install preserves malformed config for recovery', async () => {
const fixture = await createFixture({ existingSettings: '{ malformed' });
try {
assert.equal(fixture.installResult.code, 1);
assert.match(fixture.installResult.stderr, /parse Codex hooks config/i);
assert.equal(await readFile(fixture.configPath, 'utf-8'), '{ malformed');
} finally {
await fixture.close();
}
});