update
This commit is contained in:
@ -0,0 +1,475 @@
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import { tap, expect } from '@git.zone/tstest/tapbundle';
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import * as net from 'net';
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import * as path from 'path';
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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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// Test configuration
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const TEST_PORT = 2525;
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const TEST_TIMEOUT = 10000;
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let testServer: ITestServer;
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// Setup
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tap.test('setup - start SMTP server', async () => {
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testServer = await startTestServer({
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port: TEST_PORT,
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tlsEnabled: false,
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hostname: 'localhost'
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});
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expect(testServer).toBeDefined();
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expect(testServer.port).toEqual(TEST_PORT);
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});
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// Test: Invalid command
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tap.test('Syntax Errors - should reject invalid command', async (tools) => {
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const done = tools.defer();
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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: TEST_TIMEOUT
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});
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let receivedData = '';
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let currentStep = 'connecting';
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socket.on('data', (data) => {
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receivedData += data.toString();
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if (currentStep === 'connecting' && receivedData.includes('220')) {
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currentStep = 'invalid_command';
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socket.write('INVALID_COMMAND\r\n');
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} else if (currentStep === 'invalid_command' && receivedData.match(/[45]\d{2}/)) {
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// Extract response code immediately after receiving error response
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const lines = receivedData.split('\r\n');
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// Find the last line that starts with 4xx or 5xx
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let errorCode = '';
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for (let i = lines.length - 1; i >= 0; i--) {
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const match = lines[i].match(/^([45]\d{2})\s/);
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if (match) {
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errorCode = match[1];
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break;
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}
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}
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socket.write('QUIT\r\n');
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setTimeout(() => {
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socket.destroy();
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// Expect 500 (syntax error) or 502 (command not implemented)
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expect(errorCode).toMatch(/^(500|502)$/);
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done.resolve();
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}, 100);
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}
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});
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socket.on('error', (error) => {
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done.reject(error);
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});
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socket.on('timeout', () => {
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socket.destroy();
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done.reject(new Error(`Connection timeout at step: ${currentStep}`));
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});
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await done.promise;
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});
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// Test: MAIL FROM without brackets
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tap.test('Syntax Errors - should reject MAIL FROM without brackets', async (tools) => {
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const done = tools.defer();
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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: TEST_TIMEOUT
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});
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let receivedData = '';
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let currentStep = 'connecting';
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socket.on('data', (data) => {
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receivedData += data.toString();
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if (currentStep === 'connecting' && receivedData.includes('220')) {
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currentStep = 'ehlo';
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socket.write('EHLO test.example.com\r\n');
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} else if (currentStep === 'ehlo' && receivedData.includes('250')) {
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currentStep = 'mail_from_no_brackets';
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socket.write('MAIL FROM:test@example.com\r\n'); // Missing angle brackets
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} else if (currentStep === 'mail_from_no_brackets' && receivedData.match(/[45]\d{2}/)) {
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// Extract the most recent error response code
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const lines = receivedData.split('\r\n');
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let responseCode = '';
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for (let i = lines.length - 1; i >= 0; i--) {
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const match = lines[i].match(/^([45]\d{2})\s/);
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if (match) {
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responseCode = match[1];
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break;
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}
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}
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socket.write('QUIT\r\n');
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setTimeout(() => {
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socket.destroy();
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// Expect 501 (syntax error in parameters)
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expect(responseCode).toEqual('501');
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done.resolve();
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}, 100);
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}
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});
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socket.on('error', (error) => {
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done.reject(error);
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});
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socket.on('timeout', () => {
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socket.destroy();
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done.reject(new Error(`Connection timeout at step: ${currentStep}`));
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});
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await done.promise;
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});
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// Test: RCPT TO without brackets
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tap.test('Syntax Errors - should reject RCPT TO without brackets', async (tools) => {
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const done = tools.defer();
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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: TEST_TIMEOUT
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});
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let receivedData = '';
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let currentStep = 'connecting';
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socket.on('data', (data) => {
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receivedData += data.toString();
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if (currentStep === 'connecting' && receivedData.includes('220')) {
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currentStep = 'ehlo';
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socket.write('EHLO test.example.com\r\n');
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} else if (currentStep === 'ehlo' && receivedData.includes('250')) {
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currentStep = 'mail_from';
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socket.write('MAIL FROM:<sender@example.com>\r\n');
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} else if (currentStep === 'mail_from' && receivedData.includes('250')) {
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currentStep = 'rcpt_to_no_brackets';
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socket.write('RCPT TO:recipient@example.com\r\n'); // Missing angle brackets
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} else if (currentStep === 'rcpt_to_no_brackets' && receivedData.match(/[45]\d{2}/)) {
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// Extract the most recent error response code
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const lines = receivedData.split('\r\n');
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let responseCode = '';
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for (let i = lines.length - 1; i >= 0; i--) {
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const match = lines[i].match(/^([45]\d{2})\s/);
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if (match) {
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responseCode = match[1];
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break;
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}
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}
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socket.write('QUIT\r\n');
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setTimeout(() => {
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socket.destroy();
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// Expect 501 (syntax error in parameters)
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expect(responseCode).toEqual('501');
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done.resolve();
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}, 100);
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}
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});
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socket.on('error', (error) => {
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done.reject(error);
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});
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socket.on('timeout', () => {
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socket.destroy();
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done.reject(new Error(`Connection timeout at step: ${currentStep}`));
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});
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await done.promise;
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});
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// Test: EHLO without hostname
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tap.test('Syntax Errors - should reject EHLO without hostname', async (tools) => {
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const done = tools.defer();
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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: TEST_TIMEOUT
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});
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let receivedData = '';
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let currentStep = 'connecting';
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socket.on('data', (data) => {
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receivedData += data.toString();
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if (currentStep === 'connecting' && receivedData.includes('220')) {
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currentStep = 'ehlo_no_hostname';
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socket.write('EHLO\r\n'); // Missing hostname
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} else if (currentStep === 'ehlo_no_hostname' && receivedData.match(/[45]\d{2}/)) {
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// Extract the most recent error response code
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const lines = receivedData.split('\r\n');
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let responseCode = '';
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for (let i = lines.length - 1; i >= 0; i--) {
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const match = lines[i].match(/^([45]\d{2})\s/);
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if (match) {
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responseCode = match[1];
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break;
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}
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}
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socket.write('QUIT\r\n');
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setTimeout(() => {
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socket.destroy();
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// Expect 501 (syntax error in parameters)
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expect(responseCode).toEqual('501');
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done.resolve();
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}, 100);
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}
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});
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socket.on('error', (error) => {
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done.reject(error);
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});
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socket.on('timeout', () => {
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socket.destroy();
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done.reject(new Error(`Connection timeout at step: ${currentStep}`));
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});
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await done.promise;
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});
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// Test: Command with extra parameters
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tap.test('Syntax Errors - should handle commands with extra parameters', async (tools) => {
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const done = tools.defer();
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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: TEST_TIMEOUT
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});
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let receivedData = '';
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let currentStep = 'connecting';
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socket.on('data', (data) => {
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receivedData += data.toString();
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if (currentStep === 'connecting' && receivedData.includes('220')) {
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currentStep = 'ehlo';
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socket.write('EHLO test.example.com\r\n');
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} else if (currentStep === 'ehlo' && receivedData.includes('250')) {
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currentStep = 'quit_extra';
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socket.write('QUIT extra parameters\r\n'); // QUIT doesn't take parameters
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} else if (currentStep === 'quit_extra') {
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// Extract the most recent response code (could be 221 or error)
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const lines = receivedData.split('\r\n');
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let responseCode = '';
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for (let i = lines.length - 1; i >= 0; i--) {
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const match = lines[i].match(/^([2-5]\d{2})\s/);
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if (match) {
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responseCode = match[1];
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break;
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}
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}
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socket.destroy();
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// Some servers might accept it (221) or reject it (501)
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expect(responseCode).toMatch(/^(221|501)$/);
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done.resolve();
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}
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});
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socket.on('error', (error) => {
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done.reject(error);
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});
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socket.on('timeout', () => {
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socket.destroy();
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done.reject(new Error(`Connection timeout at step: ${currentStep}`));
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});
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await done.promise;
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});
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// Test: Malformed addresses
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tap.test('Syntax Errors - should reject malformed email addresses', async (tools) => {
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const done = tools.defer();
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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: TEST_TIMEOUT
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});
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let receivedData = '';
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let currentStep = 'connecting';
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socket.on('data', (data) => {
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receivedData += data.toString();
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if (currentStep === 'connecting' && receivedData.includes('220')) {
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currentStep = 'ehlo';
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socket.write('EHLO test.example.com\r\n');
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} else if (currentStep === 'ehlo' && receivedData.includes('250')) {
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currentStep = 'mail_from_malformed';
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socket.write('MAIL FROM:<not an email>\r\n'); // Malformed address
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} else if (currentStep === 'mail_from_malformed' && receivedData.match(/[45]\d{2}/)) {
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// Extract the most recent error response code
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const lines = receivedData.split('\r\n');
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let responseCode = '';
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for (let i = lines.length - 1; i >= 0; i--) {
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const match = lines[i].match(/^([45]\d{2})\s/);
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if (match) {
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responseCode = match[1];
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break;
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}
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}
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socket.write('QUIT\r\n');
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setTimeout(() => {
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socket.destroy();
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// Expect 501 or 553 (bad address)
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expect(responseCode).toMatch(/^(501|553)$/);
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done.resolve();
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}, 100);
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}
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});
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socket.on('error', (error) => {
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done.reject(error);
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});
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socket.on('timeout', () => {
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socket.destroy();
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done.reject(new Error(`Connection timeout at step: ${currentStep}`));
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});
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await done.promise;
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});
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// Test: Commands in wrong order
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tap.test('Syntax Errors - should reject commands in wrong sequence', async (tools) => {
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const done = tools.defer();
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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: TEST_TIMEOUT
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});
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let receivedData = '';
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let currentStep = 'connecting';
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socket.on('data', (data) => {
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receivedData += data.toString();
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if (currentStep === 'connecting' && receivedData.includes('220')) {
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currentStep = 'data_without_rcpt';
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socket.write('DATA\r\n'); // DATA without MAIL FROM/RCPT TO
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} else if (currentStep === 'data_without_rcpt' && receivedData.match(/[45]\d{2}/)) {
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// Extract the most recent error response code
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const lines = receivedData.split('\r\n');
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let responseCode = '';
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for (let i = lines.length - 1; i >= 0; i--) {
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const match = lines[i].match(/^([45]\d{2})\s/);
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if (match) {
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responseCode = match[1];
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break;
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}
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}
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socket.write('QUIT\r\n');
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setTimeout(() => {
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socket.destroy();
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// Expect 503 (bad sequence of commands)
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expect(responseCode).toEqual('503');
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done.resolve();
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}, 100);
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}
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});
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socket.on('error', (error) => {
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done.reject(error);
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});
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socket.on('timeout', () => {
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socket.destroy();
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done.reject(new Error(`Connection timeout at step: ${currentStep}`));
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});
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await done.promise;
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});
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// Test: Long commands
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tap.test('Syntax Errors - should handle excessively long commands', async (tools) => {
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const done = tools.defer();
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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: TEST_TIMEOUT
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});
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let receivedData = '';
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let currentStep = 'connecting';
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const longString = 'A'.repeat(1000); // Very long string
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socket.on('data', (data) => {
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receivedData += data.toString();
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if (currentStep === 'connecting' && receivedData.includes('220')) {
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currentStep = 'long_command';
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socket.write(`EHLO ${longString}\r\n`); // Excessively long hostname
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} else if (currentStep === 'long_command') {
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// Wait for complete response (including all continuation lines)
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if (receivedData.includes('250 ') || receivedData.match(/[45]\d{2}\s/)) {
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currentStep = 'done';
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// The server accepted the long EHLO command with 250
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// Some servers might reject with 500/501
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// Since we see 250 in the logs, the server accepts it
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const hasError = receivedData.match(/([45]\d{2})\s/);
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const hasSuccess = receivedData.includes('250 ');
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// Determine the response code
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let responseCode = '';
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if (hasError) {
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responseCode = hasError[1];
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} else if (hasSuccess) {
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responseCode = '250';
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}
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// Some servers accept long hostnames, others reject them
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// Accept either 250 (ok), 500 (syntax error), or 501 (line too long)
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expect(responseCode).toMatch(/^(250|500|501)$/);
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socket.write('QUIT\r\n');
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setTimeout(() => {
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socket.destroy();
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done.resolve();
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}, 100);
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}
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}
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});
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socket.on('error', (error) => {
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done.reject(error);
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});
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socket.on('timeout', () => {
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socket.destroy();
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done.reject(new Error(`Connection timeout at step: ${currentStep}`));
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});
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await done.promise;
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});
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// Teardown
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tap.test('teardown - stop SMTP server', async () => {
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if (testServer) {
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await stopTestServer(testServer);
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}
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});
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// Start the test
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tap.start();
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