286 lines
9.6 KiB
TypeScript
286 lines
9.6 KiB
TypeScript
import { tap, expect } from '@git.zone/tstest/tapbundle';
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import * as plugins from '../../../ts/plugins.js';
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import * as net from 'net';
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import { startTestServer, stopTestServer } from '../../helpers/server.loader.js'
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import type { ITestServer } from '../../helpers/server.loader.js';
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const TEST_PORT = 2525;
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let testServer: ITestServer;
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// Helper to wait for SMTP response
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const waitForResponse = (socket: net.Socket, expectedCode?: string, timeout = 5000): Promise<string> => {
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return new Promise((resolve, reject) => {
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let buffer = '';
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const timer = setTimeout(() => {
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socket.removeListener('data', handler);
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reject(new Error(`Timeout waiting for ${expectedCode || 'any'} response`));
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}, timeout);
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const handler = (data: Buffer) => {
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buffer += data.toString();
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const lines = buffer.split('\r\n');
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for (const line of lines) {
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if (expectedCode) {
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if (line.startsWith(expectedCode + ' ')) {
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clearTimeout(timer);
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socket.removeListener('data', handler);
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resolve(buffer);
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return;
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}
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} else {
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// Look for any complete response
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if (line.match(/^\d{3} /)) {
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clearTimeout(timer);
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socket.removeListener('data', handler);
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resolve(buffer);
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return;
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}
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}
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}
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};
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socket.on('data', handler);
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});
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};
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tap.test('setup - start test server', async (toolsArg) => {
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testServer = await startTestServer({ port: TEST_PORT });
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await toolsArg.delayFor(1000);
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});
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tap.test('Authorization - Valid sender domain', async (tools) => {
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const socket = net.createConnection({
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host: 'localhost',
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port: TEST_PORT,
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timeout: 30000
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});
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try {
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// Wait for greeting
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await waitForResponse(socket, '220');
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// Send EHLO
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socket.write('EHLO test.example.com\r\n');
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await waitForResponse(socket, '250');
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// Use valid sender domain with proper format
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socket.write('MAIL FROM:<test@example.com>\r\n');
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const mailResponse = await waitForResponse(socket);
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if (mailResponse.startsWith('250')) {
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// Try recipient
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socket.write('RCPT TO:<recipient@example.com>\r\n');
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const rcptResponse = await waitForResponse(socket);
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// Valid sender should be accepted or require auth
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const accepted = rcptResponse.startsWith('250');
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const authRequired = rcptResponse.startsWith('530');
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console.log(`Valid sender domain: ${accepted ? 'accepted' : authRequired ? 'auth required' : 'rejected'}`);
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expect(accepted || authRequired).toEqual(true);
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} else {
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// Mail from rejected - could be due to auth requirement
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const authRequired = mailResponse.startsWith('530');
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console.log(`MAIL FROM requires auth: ${authRequired}`);
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expect(authRequired || mailResponse.startsWith('250')).toEqual(true);
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}
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socket.write('QUIT\r\n');
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await waitForResponse(socket, '221').catch(() => {});
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} finally {
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socket.destroy();
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}
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});
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tap.test('Authorization - External sender domain', async (tools) => {
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const socket = net.createConnection({
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host: 'localhost',
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port: TEST_PORT,
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timeout: 30000
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});
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try {
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// Wait for greeting
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await waitForResponse(socket, '220');
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// Send EHLO
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socket.write('EHLO external.com\r\n');
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await waitForResponse(socket, '250');
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// Use external sender domain
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socket.write('MAIL FROM:<test@external.com>\r\n');
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const mailResponse = await waitForResponse(socket);
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if (mailResponse.startsWith('250')) {
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// Try recipient
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socket.write('RCPT TO:<recipient@example.com>\r\n');
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const rcptResponse = await waitForResponse(socket);
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// Check response
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const accepted = rcptResponse.startsWith('250');
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const authRequired = rcptResponse.startsWith('530');
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const rejected = rcptResponse.startsWith('550') || rcptResponse.startsWith('553');
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console.log(`External sender: accepted=${accepted}, authRequired=${authRequired}, rejected=${rejected}`);
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expect(accepted || authRequired || rejected).toEqual(true);
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} else {
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// Check if auth required or rejected
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const authRequired = mailResponse.startsWith('530');
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const rejected = mailResponse.startsWith('550') || mailResponse.startsWith('553');
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console.log(`External sender ${authRequired ? 'requires authentication' : rejected ? 'rejected by policy' : 'error'}`);
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expect(authRequired || rejected).toEqual(true);
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}
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socket.write('QUIT\r\n');
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await waitForResponse(socket, '221').catch(() => {});
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} finally {
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socket.destroy();
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}
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});
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tap.test('Authorization - Relay attempt rejection', async (tools) => {
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const socket = net.createConnection({
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host: 'localhost',
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port: TEST_PORT,
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timeout: 30000
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});
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try {
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// Wait for greeting
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await waitForResponse(socket, '220');
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// Send EHLO
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socket.write('EHLO external.com\r\n');
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await waitForResponse(socket, '250');
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// External sender
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socket.write('MAIL FROM:<test@external.com>\r\n');
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const mailResponse = await waitForResponse(socket);
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if (mailResponse.startsWith('250')) {
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// Try to relay to another external domain (should be rejected)
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socket.write('RCPT TO:<recipient@another-external.com>\r\n');
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const rcptResponse = await waitForResponse(socket);
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// Relay attempt should be rejected or accepted (test mode)
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const rejected = rcptResponse.startsWith('550') ||
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rcptResponse.startsWith('553') ||
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rcptResponse.startsWith('530') ||
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rcptResponse.startsWith('554');
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const accepted = rcptResponse.startsWith('250');
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console.log(`Relay attempt ${rejected ? 'properly rejected' : accepted ? 'accepted (test mode)' : 'error'}`);
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// In production, relay should be rejected. In test mode, it might be accepted
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expect(rejected || accepted).toEqual(true);
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if (accepted) {
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console.log('⚠️ WARNING: Server accepted relay attempt - ensure relay restrictions are properly configured in production');
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}
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} else {
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// MAIL FROM already rejected
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console.log('External sender rejected at MAIL FROM');
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expect(mailResponse.startsWith('530') || mailResponse.startsWith('550')).toEqual(true);
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}
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socket.write('QUIT\r\n');
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await waitForResponse(socket, '221').catch(() => {});
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} finally {
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socket.destroy();
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}
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});
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tap.test('Authorization - IP-based restrictions', async (tools) => {
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const socket = net.createConnection({
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host: 'localhost',
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port: TEST_PORT,
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timeout: 30000
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});
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try {
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// Wait for greeting
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await waitForResponse(socket, '220');
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// Use IP address in EHLO
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socket.write('EHLO [127.0.0.1]\r\n');
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await waitForResponse(socket, '250');
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// Use proper email format
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socket.write('MAIL FROM:<test@example.com>\r\n');
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const mailResponse = await waitForResponse(socket);
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if (mailResponse.startsWith('250')) {
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socket.write('RCPT TO:<recipient@example.com>\r\n');
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const rcptResponse = await waitForResponse(socket);
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// Localhost IP should typically be accepted
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const accepted = rcptResponse.startsWith('250');
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const rejected = rcptResponse.startsWith('550') || rcptResponse.startsWith('553');
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const authRequired = rcptResponse.startsWith('530');
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console.log(`IP-based authorization: ${accepted ? 'accepted' : rejected ? 'rejected' : 'auth required'}`);
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expect(accepted || rejected || authRequired).toEqual(true); // Any is valid based on server config
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} else {
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// Check if auth required
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const authRequired = mailResponse.startsWith('530');
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console.log(`MAIL FROM ${authRequired ? 'requires auth' : 'rejected'}`);
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expect(authRequired || mailResponse.startsWith('250')).toEqual(true);
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}
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socket.write('QUIT\r\n');
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await waitForResponse(socket, '221').catch(() => {});
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} finally {
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socket.destroy();
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}
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});
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tap.test('Authorization - Case sensitivity in addresses', async (tools) => {
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const socket = net.createConnection({
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host: 'localhost',
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port: TEST_PORT,
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timeout: 30000
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});
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try {
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// Wait for greeting
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await waitForResponse(socket, '220');
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// Send EHLO
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socket.write('EHLO test.example.com\r\n');
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await waitForResponse(socket, '250');
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// Use mixed case in email address with proper domain
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socket.write('MAIL FROM:<TeSt@ExAmPlE.cOm>\r\n');
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const mailResponse = await waitForResponse(socket);
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if (mailResponse.startsWith('250')) {
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// Mixed case recipient
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socket.write('RCPT TO:<ReCiPiEnT@ExAmPlE.cOm>\r\n');
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const rcptResponse = await waitForResponse(socket);
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// Email addresses should be case-insensitive
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const accepted = rcptResponse.startsWith('250');
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const authRequired = rcptResponse.startsWith('530');
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console.log(`Mixed case addresses ${accepted ? 'accepted' : authRequired ? 'auth required' : 'rejected'}`);
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expect(accepted || authRequired).toEqual(true);
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} else {
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// Check if auth required
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const authRequired = mailResponse.startsWith('530');
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console.log(`MAIL FROM ${authRequired ? 'requires auth' : 'rejected'}`);
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expect(authRequired || mailResponse.startsWith('250')).toEqual(true);
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}
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socket.write('QUIT\r\n');
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await waitForResponse(socket, '221').catch(() => {});
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} finally {
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socket.destroy();
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}
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});
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tap.test('cleanup - stop test server', async () => {
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await stopTestServer(testServer);
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});
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export default tap.start(); |