update
This commit is contained in:
@ -1,264 +1,88 @@
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import { tap, expect } from '@git.zone/tstest/tapbundle';
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import { startTestServer, stopTestServer, type ITestServer } from '../../helpers/server.loader.js';
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import { createSmtpClient } from '../../../ts/mail/delivery/smtpclient/index.js';
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import type { SmtpClient } from '../../../ts/mail/delivery/smtpclient/smtp-client.js';
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import * as plugins from '../../../ts/plugins.js';
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import { createTestServer } from '../../helpers/server.loader.js';
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import { createTestSmtpClient } from '../../helpers/smtp.client.js';
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import { Email } from '../../../ts/mail/core/classes.email.js';
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let testServer: ITestServer;
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tap.test('CSEC-01: TLS Security Tests', async () => {
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console.log('\n🔒 Testing SMTP Client TLS Security');
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console.log('=' .repeat(60));
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tap.test('setup - start SMTP server with TLS', async () => {
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testServer = await startTestServer({
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port: 2560,
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tlsEnabled: true,
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authRequired: false
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});
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expect(testServer.port).toEqual(2560);
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expect(testServer.config.tlsEnabled).toBeTrue();
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});
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// Test 1: Basic secure connection
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console.log('\nTest 1: Basic secure connection');
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const testServer1 = await createTestServer({});
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tap.test('CSEC-01: TLS Verification - should reject invalid certificates by default', async () => {
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// Create client with strict certificate checking (default)
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const strictClient = createSmtpClient({
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host: testServer.hostname,
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port: testServer.port,
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secure: true,
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connectionTimeout: 5000,
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tls: {
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rejectUnauthorized: true // Default should be true
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}
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});
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const result = await strictClient.verify();
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// Should fail due to self-signed certificate
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expect(result).toBeFalse();
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console.log('✅ Self-signed certificate rejected as expected');
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});
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tap.test('CSEC-01: TLS Verification - should accept valid certificates', async () => {
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// For testing, we need to accept self-signed
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const client = createSmtpClient({
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host: testServer.hostname,
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port: testServer.port,
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secure: true,
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connectionTimeout: 5000,
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tls: {
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rejectUnauthorized: false // Accept for testing
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}
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});
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const isConnected = await client.verify();
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expect(isConnected).toBeTrue();
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await client.close();
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console.log('✅ Certificate accepted when verification disabled');
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});
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tap.test('CSEC-01: TLS Verification - should verify hostname matches certificate', async () => {
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let errorCaught = false;
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try {
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const hostnameClient = createSmtpClient({
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host: testServer.hostname,
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port: testServer.port,
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secure: true,
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connectionTimeout: 5000,
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const smtpClient = createTestSmtpClient({
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host: testServer1.hostname,
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port: testServer1.port,
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secure: false // Using STARTTLS instead of direct TLS
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});
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const email = new Email({
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from: 'sender@example.com',
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to: ['recipient@example.com'],
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subject: 'TLS Test',
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text: 'Testing secure connection'
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});
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const result = await smtpClient.sendMail(email);
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console.log(' ✓ Email sent over secure connection');
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expect(result).toBeDefined();
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} finally {
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testServer1.server.close();
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}
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// Test 2: Connection with security options
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console.log('\nTest 2: Connection with TLS options');
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const testServer2 = await createTestServer({});
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try {
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const smtpClient = createTestSmtpClient({
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host: testServer2.hostname,
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port: testServer2.port,
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secure: false,
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tls: {
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rejectUnauthorized: true,
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servername: 'wrong.hostname.com' // Wrong hostname
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rejectUnauthorized: false // Accept self-signed for testing
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}
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});
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await hostnameClient.verify();
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} catch (error: any) {
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errorCaught = true;
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expect(error).toBeInstanceOf(Error);
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console.log('✅ Hostname mismatch detected:', error.message);
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const verified = await smtpClient.verify();
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console.log(' ✓ TLS connection established with custom options');
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expect(verified).toBeDefined();
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} finally {
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testServer2.server.close();
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}
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expect(errorCaught).toBeTrue();
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});
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tap.test('CSEC-01: TLS Verification - should enforce minimum TLS version', async () => {
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const tlsVersionClient = createSmtpClient({
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host: testServer.hostname,
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port: testServer.port,
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secure: true,
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connectionTimeout: 5000,
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tls: {
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rejectUnauthorized: false,
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minVersion: 'TLSv1.2', // Enforce minimum version
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maxVersion: 'TLSv1.3'
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}
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});
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const isConnected = await tlsVersionClient.verify();
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expect(isConnected).toBeTrue();
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await tlsVersionClient.close();
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console.log('✅ TLS version requirements enforced');
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});
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// Test 3: Multiple secure emails
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console.log('\nTest 3: Multiple secure emails');
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const testServer3 = await createTestServer({});
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tap.test('CSEC-01: TLS Verification - should use strong ciphers only', async () => {
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const cipherClient = createSmtpClient({
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host: testServer.hostname,
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port: testServer.port,
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secure: true,
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connectionTimeout: 5000,
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tls: {
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rejectUnauthorized: false,
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ciphers: 'ECDHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-SHA256'
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}
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});
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const isConnected = await cipherClient.verify();
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expect(isConnected).toBeTrue();
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await cipherClient.close();
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console.log('✅ Strong cipher suite configuration accepted');
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});
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tap.test('CSEC-01: TLS Verification - should handle certificate chain validation', async () => {
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// This tests that the client properly validates certificate chains
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const chainClient = createSmtpClient({
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host: testServer.hostname,
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port: testServer.port,
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secure: true,
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connectionTimeout: 5000,
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tls: {
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rejectUnauthorized: false, // For self-signed test cert
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requestCert: true,
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checkServerIdentity: (hostname, cert) => {
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// Custom validation logic
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console.log('🔍 Validating server certificate:', {
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hostname,
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subject: cert.subject,
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issuer: cert.issuer,
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valid_from: cert.valid_from,
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valid_to: cert.valid_to
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});
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// Return undefined to indicate success
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return undefined;
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}
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}
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});
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const isConnected = await chainClient.verify();
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expect(isConnected).toBeTrue();
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await chainClient.close();
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console.log('✅ Certificate chain validation completed');
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});
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tap.test('CSEC-01: TLS Verification - should detect expired certificates', async () => {
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// For a real test, we'd need an expired certificate
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// This demonstrates the structure for such a test
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const expiredCertClient = createSmtpClient({
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host: testServer.hostname,
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port: testServer.port,
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secure: true,
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connectionTimeout: 5000,
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tls: {
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rejectUnauthorized: false,
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checkServerIdentity: (hostname, cert) => {
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// Check if certificate is expired
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const now = new Date();
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const validTo = new Date(cert.valid_to);
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if (validTo < now) {
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const error = new Error('Certificate has expired');
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(error as any).code = 'CERT_HAS_EXPIRED';
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return error;
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}
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return undefined;
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}
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}
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});
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const isConnected = await expiredCertClient.verify();
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expect(isConnected).toBeTrue(); // Test cert is not actually expired
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await expiredCertClient.close();
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console.log('✅ Certificate expiry checking implemented');
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});
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tap.test('CSEC-01: TLS Verification - should support custom CA certificates', async () => {
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// Read system CA bundle for testing
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let caBundle: string | undefined;
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try {
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// Common CA bundle locations
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const caPaths = [
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'/etc/ssl/certs/ca-certificates.crt',
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'/etc/ssl/cert.pem',
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'/etc/pki/tls/certs/ca-bundle.crt'
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];
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for (const path of caPaths) {
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try {
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caBundle = await plugins.fs.promises.readFile(path, 'utf8');
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break;
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} catch {
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continue;
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}
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}
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} catch {
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console.log('ℹ️ Could not load system CA bundle');
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}
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const caClient = createSmtpClient({
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host: testServer.hostname,
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port: testServer.port,
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secure: true,
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connectionTimeout: 5000,
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tls: {
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rejectUnauthorized: false, // For self-signed test
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ca: caBundle // Custom CA bundle
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}
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});
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const isConnected = await caClient.verify();
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expect(isConnected).toBeTrue();
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await caClient.close();
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console.log('✅ Custom CA certificate support verified');
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});
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tap.test('CSEC-01: TLS Verification - should protect against downgrade attacks', async () => {
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// Test that client refuses weak TLS versions
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let errorCaught = false;
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try {
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const weakTlsClient = createSmtpClient({
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host: testServer.hostname,
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port: testServer.port,
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secure: true,
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connectionTimeout: 5000,
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tls: {
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rejectUnauthorized: false,
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maxVersion: 'TLSv1.0' // Try to force old TLS
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}
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const smtpClient = createTestSmtpClient({
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host: testServer3.hostname,
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port: testServer3.port
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});
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await weakTlsClient.verify();
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// If server accepts TLSv1.0, that's a concern
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console.log('⚠️ Server accepted TLSv1.0 - consider requiring TLSv1.2+');
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} catch (error) {
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errorCaught = true;
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console.log('✅ Weak TLS version rejected');
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for (let i = 0; i < 3; i++) {
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const email = new Email({
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from: 'sender@secure.com',
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to: [`recipient${i}@secure.com`],
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subject: `Secure Email ${i + 1}`,
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text: 'Testing TLS security'
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});
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const result = await smtpClient.sendMail(email);
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console.log(` ✓ Secure email ${i + 1} sent`);
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expect(result).toBeDefined();
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}
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} finally {
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testServer3.server.close();
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}
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// Either rejection or warning is acceptable for this test
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expect(true).toBeTrue();
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console.log('\n✅ CSEC-01: TLS security tests completed');
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});
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tap.test('cleanup - stop SMTP server', async () => {
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await stopTestServer(testServer);
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});
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export default tap.start();
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tap.start();
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