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2025-11-26 12:16:50 +00:00
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ts/classes/caddy.ts Normal file
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/**
* Caddy Manager for Onebox
*
* Manages Caddy binary download, process lifecycle, and Admin API configuration.
* Caddy is used as the reverse proxy with native SNI support.
*/
import { logger } from '../logging.ts';
import { getErrorMessage } from '../utils/error.ts';
const CADDY_VERSION = '2.10.2';
const CADDY_DOWNLOAD_URL = `https://github.com/caddyserver/caddy/releases/download/v${CADDY_VERSION}/caddy_${CADDY_VERSION}_linux_amd64.tar.gz`;
export interface ICaddyRoute {
domain: string;
upstream: string; // e.g., "10.0.1.40:80"
}
export interface ICaddyCertificate {
domain: string;
certPath: string;
keyPath: string;
}
interface ICaddyLoggingConfig {
logs: {
[name: string]: {
writer: {
output: string;
address?: string;
dial_timeout?: string;
soft_start?: boolean;
};
encoder?: { format: string };
level?: string;
include?: string[];
};
};
}
interface ICaddyConfig {
admin: {
listen: string;
};
logging?: ICaddyLoggingConfig;
apps: {
http: {
servers: {
[key: string]: {
listen: string[];
routes: ICaddyRouteConfig[];
automatic_https?: {
disable?: boolean;
disable_redirects?: boolean;
};
logs?: {
default_logger_name: string;
};
};
};
};
tls?: {
automation?: {
policies: Array<{ issuers: never[] }>;
};
certificates?: {
load_files?: Array<{
certificate: string;
key: string;
tags?: string[];
}>;
};
};
};
}
interface ICaddyRouteConfig {
match: Array<{ host: string[] }>;
handle: Array<{
handler: string;
upstreams?: Array<{ dial: string }>;
routes?: ICaddyRouteConfig[];
}>;
terminal?: boolean;
}
export class CaddyManager {
private process: Deno.ChildProcess | null = null;
private binaryPath: string;
private certsDir: string;
private adminUrl: string;
private httpPort: number;
private httpsPort: number;
private logReceiverPort: number;
private loggingEnabled: boolean;
private routes: Map<string, ICaddyRoute> = new Map();
private certificates: Map<string, ICaddyCertificate> = new Map();
constructor(options?: {
binaryPath?: string;
certsDir?: string;
adminPort?: number;
httpPort?: number;
httpsPort?: number;
logReceiverPort?: number;
loggingEnabled?: boolean;
}) {
this.binaryPath = options?.binaryPath || './.nogit/caddy';
this.certsDir = options?.certsDir || './.nogit/certs';
this.adminUrl = `http://localhost:${options?.adminPort || 2019}`;
this.httpPort = options?.httpPort || 8080;
this.httpsPort = options?.httpsPort || 8443;
this.logReceiverPort = options?.logReceiverPort || 9999;
this.loggingEnabled = options?.loggingEnabled ?? true;
}
/**
* Update listening ports (must call reloadConfig after if running)
*/
setPorts(httpPort: number, httpsPort: number): void {
this.httpPort = httpPort;
this.httpsPort = httpsPort;
}
/**
* Ensure Caddy binary is downloaded and executable
*/
async ensureBinary(): Promise<void> {
try {
// Check if binary exists
try {
const stat = await Deno.stat(this.binaryPath);
if (stat.isFile) {
// Verify it's executable by checking version
const cmd = new Deno.Command(this.binaryPath, {
args: ['version'],
stdout: 'piped',
stderr: 'piped',
});
const result = await cmd.output();
if (result.success) {
const version = new TextDecoder().decode(result.stdout).trim();
logger.info(`Caddy binary found: ${version}`);
return;
}
}
} catch {
// Binary doesn't exist, need to download
}
logger.info(`Downloading Caddy v${CADDY_VERSION}...`);
// Create directory if needed
const dir = this.binaryPath.substring(0, this.binaryPath.lastIndexOf('/'));
await Deno.mkdir(dir, { recursive: true });
// Download tar.gz
const response = await fetch(CADDY_DOWNLOAD_URL);
if (!response.ok) {
throw new Error(`Failed to download Caddy: ${response.status} ${response.statusText}`);
}
const tarGzPath = `${this.binaryPath}.tar.gz`;
const data = new Uint8Array(await response.arrayBuffer());
await Deno.writeFile(tarGzPath, data);
// Extract using tar command
const extractCmd = new Deno.Command('tar', {
args: ['-xzf', tarGzPath, '-C', dir, 'caddy'],
stdout: 'piped',
stderr: 'piped',
});
const extractResult = await extractCmd.output();
if (!extractResult.success) {
throw new Error(`Failed to extract Caddy: ${new TextDecoder().decode(extractResult.stderr)}`);
}
// Clean up tar.gz
await Deno.remove(tarGzPath);
// Make executable
await Deno.chmod(this.binaryPath, 0o755);
logger.success(`Caddy v${CADDY_VERSION} downloaded to ${this.binaryPath}`);
} catch (error) {
logger.error(`Failed to ensure Caddy binary: ${getErrorMessage(error)}`);
throw error;
}
}
/**
* Start Caddy process with minimal config, then configure via Admin API
*/
async start(): Promise<void> {
if (this.process) {
logger.warn('Caddy is already running');
return;
}
try {
// Create certs directory
await Deno.mkdir(this.certsDir, { recursive: true });
logger.info('Starting Caddy server...');
// Start Caddy with blank config - Admin API is available immediately
// We'll push the full configuration via Admin API after it's ready
const cmd = new Deno.Command(this.binaryPath, {
args: ['run'],
stdin: 'null',
stdout: 'piped',
stderr: 'piped',
});
this.process = cmd.spawn();
// Start log readers (non-blocking)
this.readProcessOutput();
// Wait for Admin API to be ready
await this.waitForReady();
// Now configure via Admin API with current routes and certificates
await this.reloadConfig();
logger.success(`Caddy started (HTTP: ${this.httpPort}, HTTPS: ${this.httpsPort}, Admin: ${this.adminUrl})`);
} catch (error) {
logger.error(`Failed to start Caddy: ${getErrorMessage(error)}`);
throw error;
}
}
/**
* Read process stdout/stderr and log
*/
private async readProcessOutput(): Promise<void> {
if (!this.process) return;
// Read stderr (Caddy logs to stderr by default)
const stderrReader = this.process.stderr.getReader();
(async () => {
try {
while (true) {
const { done, value } = await stderrReader.read();
if (done) break;
const text = new TextDecoder().decode(value).trim();
if (text) {
// Parse Caddy's JSON log format or just log as-is
for (const line of text.split('\n')) {
if (line.includes('"level":"error"')) {
logger.error(`[Caddy] ${line}`);
} else if (line.includes('"level":"warn"')) {
logger.warn(`[Caddy] ${line}`);
} else {
logger.debug(`[Caddy] ${line}`);
}
}
}
}
} catch {
// Process ended
}
})();
}
/**
* Wait for Caddy to be ready by polling admin API
*/
private async waitForReady(maxAttempts = 50, intervalMs = 100): Promise<void> {
for (let i = 0; i < maxAttempts; i++) {
try {
const response = await fetch(`${this.adminUrl}/config/`);
if (response.ok) {
return;
}
} catch {
// Not ready yet
}
await new Promise((resolve) => setTimeout(resolve, intervalMs));
}
throw new Error('Caddy failed to start within timeout');
}
/**
* Stop Caddy process
*/
async stop(): Promise<void> {
if (!this.process) {
return;
}
try {
logger.info('Stopping Caddy...');
// Try graceful shutdown via API first
try {
await fetch(`${this.adminUrl}/stop`, { method: 'POST' });
// Wait for process to exit
await Promise.race([
this.process.status,
new Promise((resolve) => setTimeout(resolve, 5000)),
]);
} catch {
// API not available, kill directly
}
// Force kill if still running
try {
this.process.kill('SIGTERM');
} catch {
// Already dead
}
this.process = null;
logger.info('Caddy stopped');
} catch (error) {
logger.error(`Failed to stop Caddy: ${getErrorMessage(error)}`);
}
}
/**
* Check if Caddy is healthy
*/
async isHealthy(): Promise<boolean> {
try {
const response = await fetch(`${this.adminUrl}/config/`);
return response.ok;
} catch {
return false;
}
}
/**
* Build Caddy JSON configuration from current routes and certificates
*/
private buildConfig(): ICaddyConfig {
const routes: ICaddyRouteConfig[] = [];
// Add routes
for (const [domain, route] of this.routes) {
routes.push({
match: [{ host: [domain] }],
handle: [
{
handler: 'reverse_proxy',
upstreams: [{ dial: route.upstream }],
},
],
terminal: true,
});
}
// Build certificate load_files
const loadFiles: Array<{ certificate: string; key: string; tags?: string[] }> = [];
for (const [domain, cert] of this.certificates) {
loadFiles.push({
certificate: cert.certPath,
key: cert.keyPath,
tags: [domain],
});
}
const config: ICaddyConfig = {
admin: {
listen: this.adminUrl.replace('http://', ''),
},
apps: {
http: {
servers: {
main: {
listen: [`:${this.httpPort}`, `:${this.httpsPort}`],
routes,
// Disable automatic HTTPS to prevent Caddy from trying to bind to port 80/443
automatic_https: {
disable: true,
},
},
},
},
},
};
// Add access logging configuration if enabled
if (this.loggingEnabled) {
config.logging = {
logs: {
access: {
writer: {
output: 'net',
address: `tcp/localhost:${this.logReceiverPort}`,
dial_timeout: '5s',
soft_start: true, // Continue even if log receiver is down
},
encoder: { format: 'json' },
level: 'INFO',
include: ['http.log.access'],
},
},
};
// Associate server with access logger
config.apps.http.servers.main.logs = {
default_logger_name: 'access',
};
}
// Add TLS config if we have certificates
if (loadFiles.length > 0) {
config.apps.tls = {
automation: {
// Disable automatic HTTPS - we manage certs ourselves
policies: [{ issuers: [] }],
},
certificates: {
load_files: loadFiles,
},
};
}
return config;
}
/**
* Reload Caddy configuration via Admin API
*/
async reloadConfig(): Promise<void> {
if (!this.process) {
logger.warn('Caddy not running, cannot reload config');
return;
}
const config = this.buildConfig();
try {
const response = await fetch(`${this.adminUrl}/load`, {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify(config),
});
if (!response.ok) {
const text = await response.text();
throw new Error(`Failed to reload Caddy config: ${response.status} ${text}`);
}
logger.debug('Caddy configuration reloaded');
} catch (error) {
logger.error(`Failed to reload Caddy config: ${getErrorMessage(error)}`);
throw error;
}
}
/**
* Add or update a route
*/
async addRoute(domain: string, upstream: string): Promise<void> {
this.routes.set(domain, { domain, upstream });
if (this.process) {
await this.reloadConfig();
}
logger.success(`Added Caddy route: ${domain} -> ${upstream}`);
}
/**
* Remove a route
*/
async removeRoute(domain: string): Promise<void> {
if (this.routes.delete(domain)) {
if (this.process) {
await this.reloadConfig();
}
logger.success(`Removed Caddy route: ${domain}`);
}
}
/**
* Add or update a TLS certificate
* Writes PEM files to disk and updates config
*/
async addCertificate(domain: string, certPem: string, keyPem: string): Promise<void> {
// Write PEM files
const certPath = `${this.certsDir}/${domain}.crt`;
const keyPath = `${this.certsDir}/${domain}.key`;
await Deno.mkdir(this.certsDir, { recursive: true });
await Deno.writeTextFile(certPath, certPem);
await Deno.writeTextFile(keyPath, keyPem);
// Use absolute paths for Caddy
const absoluteCertPath = await Deno.realPath(certPath);
const absoluteKeyPath = await Deno.realPath(keyPath);
this.certificates.set(domain, {
domain,
certPath: absoluteCertPath,
keyPath: absoluteKeyPath,
});
if (this.process) {
await this.reloadConfig();
}
logger.success(`Added TLS certificate for ${domain}`);
}
/**
* Remove a TLS certificate
*/
async removeCertificate(domain: string): Promise<void> {
const cert = this.certificates.get(domain);
if (cert) {
this.certificates.delete(domain);
// Remove files
try {
await Deno.remove(cert.certPath);
await Deno.remove(cert.keyPath);
} catch {
// Files may not exist
}
if (this.process) {
await this.reloadConfig();
}
logger.success(`Removed TLS certificate for ${domain}`);
}
}
/**
* Get all current routes
*/
getRoutes(): ICaddyRoute[] {
return Array.from(this.routes.values());
}
/**
* Get all current certificates
*/
getCertificates(): ICaddyCertificate[] {
return Array.from(this.certificates.values());
}
/**
* Clear all routes and certificates (useful for reload from database)
*/
clear(): void {
this.routes.clear();
this.certificates.clear();
}
/**
* Get status
*/
getStatus(): {
running: boolean;
httpPort: number;
httpsPort: number;
routes: number;
certificates: number;
} {
return {
running: this.process !== null,
httpPort: this.httpPort,
httpsPort: this.httpsPort,
routes: this.routes.size,
certificates: this.certificates.size,
};
}
}