Files

344 lines
10 KiB
JavaScript

import { spawn, spawnSync } from 'child_process';
import {
createExecutableSearchEnv,
resolveExecutableLaunchTarget,
} from './tunnels/executable-search.js';
import { getTunnelDependencyInstallInfo } from './tunnels/install-help.js';
import { TUNNEL_PROVIDER_NGROK } from './tunnels/types.js';
const DEFAULT_STARTUP_TIMEOUT_MS = 30000;
const NGROK_API_URL = 'http://127.0.0.1:4040/api/tunnels';
const NGROK_PUBLIC_URL_REGEX = /https:\/\/[^\s"']+/i;
const NGROK_AUTHTOKEN_HELP = 'Run: ngrok config add-authtoken <your-ngrok-token>';
const getNgrokInstallInfo = () => getTunnelDependencyInstallInfo(TUNNEL_PROVIDER_NGROK);
export async function checkNgrokAvailable() {
const target = resolveExecutableLaunchTarget('ngrok');
if (target) {
try {
const result = spawnSync(target.command, ['version'], {
encoding: 'utf8',
stdio: ['pipe', 'pipe', 'pipe'],
windowsHide: true,
env: target.env,
});
if (result.status === 0) {
return { available: true, path: target.command, version: result.stdout.trim() || result.stderr.trim() };
}
} catch {
// Ignore and report unavailable below.
}
}
return { available: false, path: null, version: null };
}
export async function checkNgrokAuthtokenConfigured(ngrokPath = null) {
if (typeof process.env.NGROK_AUTHTOKEN === 'string' && process.env.NGROK_AUTHTOKEN.trim().length > 0) {
return { configured: true, detail: 'NGROK_AUTHTOKEN is set.' };
}
const target = ngrokPath
? { command: ngrokPath, env: createExecutableSearchEnv() }
: resolveExecutableLaunchTarget('ngrok');
if (!target) {
return { configured: false, detail: getNgrokInstallInfo().message };
}
try {
const result = spawnSync(target.command, ['config', 'check'], {
encoding: 'utf8',
stdio: ['pipe', 'pipe', 'pipe'],
windowsHide: true,
env: target.env,
});
const output = `${result.stdout || ''}${result.stderr || ''}`.trim();
if (result.status === 0) {
return { configured: true, detail: output || 'ngrok config is valid.' };
}
return { configured: false, detail: output || NGROK_AUTHTOKEN_HELP };
} catch (error) {
return {
configured: false,
detail: error instanceof Error ? error.message : String(error),
};
}
}
export async function checkNgrokApiReachability({ fetchImpl = globalThis.fetch, timeoutMs = 5000 } = {}) {
if (typeof fetchImpl !== 'function') {
return { reachable: false, status: null, error: 'Fetch API is unavailable in this runtime.' };
}
const controller = new AbortController();
const timeout = setTimeout(() => controller.abort(), timeoutMs);
try {
const response = await fetchImpl('https://api.ngrok.com/', {
method: 'GET',
signal: controller.signal,
});
return { reachable: true, status: response.status, error: null };
} catch (error) {
return {
reachable: false,
status: null,
error: error instanceof Error ? error.message : String(error),
};
} finally {
clearTimeout(timeout);
}
}
const spawnNgrok = (args, resolvedBinaryPath = 'ngrok') => spawn(resolvedBinaryPath, args, {
stdio: ['ignore', 'pipe', 'pipe'],
windowsHide: true,
env: createExecutableSearchEnv(),
killSignal: 'SIGINT',
});
const normalizeNgrokPublicUrl = (value) => {
if (typeof value !== 'string' || value.trim().length === 0) {
return null;
}
const trimmed = value.trim();
try {
const parsed = new URL(trimmed);
if (parsed.protocol === 'https:' && parsed.hostname.includes('ngrok')) {
return parsed.toString().replace(/\/$/, '');
}
} catch {
return null;
}
return null;
};
export function extractNgrokPublicUrlFromText(text) {
if (typeof text !== 'string' || text.trim().length === 0) {
return null;
}
const lines = text.split(/\r?\n/).map((line) => line.trim()).filter(Boolean);
for (const line of lines) {
try {
const parsed = JSON.parse(line);
const parsedUrl = normalizeNgrokPublicUrl(parsed?.url) || normalizeNgrokPublicUrl(parsed?.public_url);
if (parsedUrl) {
return parsedUrl;
}
} catch {
// ngrok may emit non-JSON diagnostics even when log-format=json.
}
const match = line.match(NGROK_PUBLIC_URL_REGEX);
const matchedUrl = normalizeNgrokPublicUrl(match?.[0]);
if (matchedUrl) {
return matchedUrl;
}
}
return null;
}
const normalizeNgrokDiagnosticText = (value) => {
if (typeof value !== 'string') {
return '';
}
return value
.replace(/\r/g, '')
.split('\n')
.map((line) => line.trim())
.filter(Boolean)
.join(' ')
.replace(/\s+/g, ' ')
.trim();
};
export const summarizeNgrokOutput = (lines) => {
const nonEmptyLines = Array.isArray(lines)
? lines.map((line) => String(line || '').trim()).filter(Boolean)
: [];
if (nonEmptyLines.length === 0) {
return '';
}
for (const line of [...nonEmptyLines].reverse()) {
try {
const parsed = JSON.parse(line);
const level = typeof parsed?.lvl === 'string' ? parsed.lvl.toLowerCase() : '';
if (level !== 'eror' && level !== 'error' && level !== 'crit') {
continue;
}
const err = normalizeNgrokDiagnosticText(parsed?.err);
if (err && err !== '<nil>') {
return err;
}
} catch {
// Not a JSON ngrok log line.
}
}
for (const line of [...nonEmptyLines].reverse()) {
try {
const parsed = JSON.parse(line);
const err = normalizeNgrokDiagnosticText(parsed?.err);
if (err && err !== '<nil>' && !/context canceled/i.test(err)) {
return err;
}
const msg = normalizeNgrokDiagnosticText(parsed?.msg);
if (msg && /failed|error|invalid|auth/i.test(msg)) {
return msg;
}
} catch {
// Not a JSON ngrok log line.
}
}
const errorLines = nonEmptyLines
.filter((line) => /^ERROR:/i.test(line))
.map((line) => normalizeNgrokDiagnosticText(line.replace(/^ERROR:\s*/i, '')))
.filter(Boolean);
if (errorLines.length > 0) {
return errorLines.slice(0, 4).join(' ');
}
const lastLine = [...nonEmptyLines].reverse().find((line) => line.trim().length > 0);
if (!lastLine) {
return '';
}
try {
const parsed = JSON.parse(lastLine);
if (typeof parsed?.err === 'string' && parsed.err.trim().length > 0) {
return normalizeNgrokDiagnosticText(parsed.err);
}
if (typeof parsed?.msg === 'string' && parsed.msg.trim().length > 0) {
return normalizeNgrokDiagnosticText(parsed.msg);
}
} catch {
// Fall through to plain text output.
}
return normalizeNgrokDiagnosticText(lastLine);
};
const appendNgrokOutputSummary = (message, lines) => {
const summary = summarizeNgrokOutput(lines);
return summary ? `${message}: ${summary}` : message;
};
async function fetchNgrokPublicUrl(fetchImpl = globalThis.fetch) {
if (typeof fetchImpl !== 'function') {
return null;
}
try {
const response = await fetchImpl(NGROK_API_URL, { method: 'GET' });
if (!response.ok) {
return null;
}
const payload = await response.json();
const tunnels = Array.isArray(payload?.tunnels) ? payload.tunnels : [];
const httpsTunnel = tunnels.find((entry) => entry?.proto === 'https' && normalizeNgrokPublicUrl(entry?.public_url));
const fallbackTunnel = tunnels.find((entry) => normalizeNgrokPublicUrl(entry?.public_url));
return normalizeNgrokPublicUrl(httpsTunnel?.public_url) || normalizeNgrokPublicUrl(fallbackTunnel?.public_url);
} catch {
return null;
}
}
export async function startNgrokQuickTunnel({ port }) {
const ngrokCheck = await checkNgrokAvailable();
if (!ngrokCheck.available) {
throw new Error(getNgrokInstallInfo().message);
}
const authtokenCheck = await checkNgrokAuthtokenConfigured(ngrokCheck.path);
if (!authtokenCheck.configured) {
throw new Error(`ngrok authtoken is not configured. ${authtokenCheck.detail || NGROK_AUTHTOKEN_HELP}`);
}
if (!Number.isFinite(port)) {
throw new Error('A local port is required to start an ngrok tunnel');
}
const child = spawnNgrok(['http', '--log=stdout', '--log-format=json', `127.0.0.1:${port}`], ngrokCheck.path);
let publicUrl = null;
const recentOutput = [];
const captureOutput = (chunk) => {
const text = chunk.toString('utf8');
const parsedUrl = extractNgrokPublicUrlFromText(text);
if (parsedUrl) {
publicUrl = parsedUrl;
}
for (const line of text.split(/\r?\n/)) {
const trimmed = line.trim();
if (!trimmed) {
continue;
}
recentOutput.push(trimmed);
if (recentOutput.length > 200) {
recentOutput.shift();
}
}
return text;
};
child.stdout.on('data', (chunk) => {
captureOutput(chunk);
});
child.stderr.on('data', (chunk) => {
const text = captureOutput(chunk);
process.stderr.write(text);
});
await new Promise((resolve, reject) => {
let settled = false;
const finish = (handler, value) => {
if (settled) {
return;
}
settled = true;
clearTimeout(timeout);
clearInterval(checkReady);
child.off('error', onError);
child.off('exit', onExit);
handler(value);
};
const timeout = setTimeout(() => {
try { child.kill('SIGINT'); } catch { /* ignore */ }
finish(reject, new Error(appendNgrokOutputSummary('Ngrok tunnel URL not received within 30 seconds', recentOutput)));
}, DEFAULT_STARTUP_TIMEOUT_MS);
const checkReady = setInterval(async () => {
publicUrl = publicUrl || await fetchNgrokPublicUrl();
if (publicUrl) {
finish(resolve, null);
}
}, 250);
const onError = (error) => {
finish(reject, new Error(`Ngrok failed to start: ${error.message}`));
};
const onExit = (code) => {
finish(reject, new Error(appendNgrokOutputSummary(`Ngrok exited while starting (code ${code ?? 'unknown'})`, recentOutput)));
};
child.once('error', onError);
child.once('exit', onExit);
});
return {
mode: 'quick',
stop: () => {
try {
child.kill('SIGINT');
} catch {
// Ignore.
}
},
process: child,
getPublicUrl: () => publicUrl,
};
}