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352
test/suite/smtpclient_commands/test.ccmd-07.response-parsing.ts
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352
test/suite/smtpclient_commands/test.ccmd-07.response-parsing.ts
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import { tap, expect } from '@git.zone/tstest/tapbundle';
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import { startTestSmtpServer } from '../../helpers/server.loader.js';
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import { createSmtpClient } from '../../helpers/smtp.client.js';
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let testServer: any;
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tap.test('setup test SMTP server', async () => {
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testServer = await startTestSmtpServer();
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expect(testServer).toBeTruthy();
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expect(testServer.port).toBeGreaterThan(0);
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});
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tap.test('CCMD-07: Parse single-line responses', async () => {
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const smtpClient = createSmtpClient({
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host: testServer.hostname,
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port: testServer.port,
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secure: false,
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connectionTimeout: 5000,
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debug: true
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});
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await smtpClient.connect();
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// Test various single-line responses
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const testCases = [
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{ command: 'NOOP', expectedCode: '250', expectedText: /OK/ },
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{ command: 'RSET', expectedCode: '250', expectedText: /Reset/ },
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{ command: 'HELP', expectedCode: '214', expectedText: /Help/ }
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];
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for (const test of testCases) {
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const response = await smtpClient.sendCommand(test.command);
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// Parse response code and text
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const codeMatch = response.match(/^(\d{3})\s+(.*)$/m);
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expect(codeMatch).toBeTruthy();
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if (codeMatch) {
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const [, code, text] = codeMatch;
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expect(code).toEqual(test.expectedCode);
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expect(text).toMatch(test.expectedText);
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console.log(`${test.command}: ${code} ${text}`);
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}
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}
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await smtpClient.close();
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});
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tap.test('CCMD-07: Parse multi-line responses', async () => {
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const smtpClient = createSmtpClient({
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host: testServer.hostname,
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port: testServer.port,
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secure: false,
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connectionTimeout: 5000,
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debug: true
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});
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await smtpClient.connect();
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// EHLO typically returns multi-line response
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const ehloResponse = await smtpClient.sendCommand('EHLO testclient.example.com');
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// Parse multi-line response
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const lines = ehloResponse.split('\r\n').filter(line => line.length > 0);
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let capabilities: string[] = [];
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let finalCode = '';
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lines.forEach((line, index) => {
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const multiLineMatch = line.match(/^(\d{3})-(.*)$/); // 250-CAPABILITY
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const finalLineMatch = line.match(/^(\d{3})\s+(.*)$/); // 250 CAPABILITY
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if (multiLineMatch) {
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const [, code, capability] = multiLineMatch;
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expect(code).toEqual('250');
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capabilities.push(capability);
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} else if (finalLineMatch) {
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const [, code, capability] = finalLineMatch;
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expect(code).toEqual('250');
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finalCode = code;
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capabilities.push(capability);
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}
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});
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expect(finalCode).toEqual('250');
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expect(capabilities.length).toBeGreaterThan(0);
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console.log('Parsed capabilities:', capabilities);
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// Common capabilities to check for
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const commonCapabilities = ['PIPELINING', 'SIZE', '8BITMIME'];
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const foundCapabilities = commonCapabilities.filter(cap =>
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capabilities.some(c => c.includes(cap))
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);
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console.log('Found common capabilities:', foundCapabilities);
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await smtpClient.close();
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});
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tap.test('CCMD-07: Parse error response codes', async () => {
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const smtpClient = createSmtpClient({
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host: testServer.hostname,
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port: testServer.port,
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secure: false,
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connectionTimeout: 5000,
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debug: true
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});
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await smtpClient.connect();
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await smtpClient.sendCommand('EHLO testclient.example.com');
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// Test various error conditions
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const errorTests = [
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{
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command: 'RCPT TO:<recipient@example.com>', // Without MAIL FROM
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expectedCodeRange: [500, 599],
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description: 'RCPT without MAIL FROM'
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},
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{
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command: 'INVALID_COMMAND',
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expectedCodeRange: [500, 502],
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description: 'Invalid command'
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},
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{
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command: 'MAIL FROM:<invalid email format>',
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expectedCodeRange: [501, 553],
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description: 'Invalid email format'
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}
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];
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for (const test of errorTests) {
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try {
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const response = await smtpClient.sendCommand(test.command);
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const codeMatch = response.match(/^(\d{3})/);
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if (codeMatch) {
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const code = parseInt(codeMatch[1]);
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console.log(`${test.description}: ${code} ${response.trim()}`);
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expect(code).toBeGreaterThanOrEqual(test.expectedCodeRange[0]);
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expect(code).toBeLessThanOrEqual(test.expectedCodeRange[1]);
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}
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} catch (error) {
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console.log(`${test.description}: Error caught - ${error.message}`);
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}
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}
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await smtpClient.sendCommand('RSET');
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await smtpClient.close();
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});
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tap.test('CCMD-07: Parse enhanced status codes', async () => {
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const smtpClient = createSmtpClient({
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host: testServer.hostname,
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port: testServer.port,
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secure: false,
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connectionTimeout: 5000,
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debug: true
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});
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await smtpClient.connect();
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await smtpClient.sendCommand('EHLO testclient.example.com');
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// Send commands that might return enhanced status codes
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await smtpClient.sendCommand('MAIL FROM:<sender@example.com>');
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// Try to send to a potentially problematic address
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const response = await smtpClient.sendCommand('RCPT TO:<postmaster@[127.0.0.1]>');
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// Parse for enhanced status codes (X.Y.Z format)
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const enhancedMatch = response.match(/\b(\d\.\d+\.\d+)\b/);
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if (enhancedMatch) {
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const [, enhancedCode] = enhancedMatch;
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console.log(`Found enhanced status code: ${enhancedCode}`);
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// Parse enhanced code components
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const [classCode, subjectCode, detailCode] = enhancedCode.split('.').map(Number);
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expect(classCode).toBeGreaterThanOrEqual(2);
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expect(classCode).toBeLessThanOrEqual(5);
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expect(subjectCode).toBeGreaterThanOrEqual(0);
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expect(detailCode).toBeGreaterThanOrEqual(0);
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// Interpret the enhanced code
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const classDescriptions = {
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2: 'Success',
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3: 'Temporary Failure',
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4: 'Persistent Transient Failure',
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5: 'Permanent Failure'
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};
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console.log(`Enhanced code ${enhancedCode} means: ${classDescriptions[classCode] || 'Unknown'}`);
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} else {
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console.log('No enhanced status code found in response');
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}
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await smtpClient.sendCommand('RSET');
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await smtpClient.close();
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});
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tap.test('CCMD-07: Parse response timing and delays', async () => {
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const smtpClient = createSmtpClient({
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host: testServer.hostname,
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port: testServer.port,
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secure: false,
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connectionTimeout: 10000,
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debug: true
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});
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await smtpClient.connect();
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await smtpClient.sendCommand('EHLO testclient.example.com');
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// Measure response times for different commands
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const timingTests = [
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'NOOP',
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'HELP',
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'MAIL FROM:<sender@example.com>',
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'RSET'
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];
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const timings: { command: string; time: number; code: string }[] = [];
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for (const command of timingTests) {
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const startTime = Date.now();
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const response = await smtpClient.sendCommand(command);
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const elapsed = Date.now() - startTime;
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const codeMatch = response.match(/^(\d{3})/);
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const code = codeMatch ? codeMatch[1] : 'unknown';
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timings.push({ command, time: elapsed, code });
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}
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// Analyze timings
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console.log('\nCommand response times:');
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timings.forEach(t => {
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console.log(` ${t.command}: ${t.time}ms (${t.code})`);
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});
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const avgTime = timings.reduce((sum, t) => sum + t.time, 0) / timings.length;
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console.log(`Average response time: ${avgTime.toFixed(2)}ms`);
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// All commands should respond quickly (under 1 second)
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timings.forEach(t => {
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expect(t.time).toBeLessThan(1000);
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});
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await smtpClient.close();
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});
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tap.test('CCMD-07: Parse continuation responses', async () => {
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const smtpClient = createSmtpClient({
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host: testServer.hostname,
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port: testServer.port,
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secure: false,
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connectionTimeout: 10000,
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debug: true
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});
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await smtpClient.connect();
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await smtpClient.sendCommand('EHLO testclient.example.com');
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await smtpClient.sendCommand('MAIL FROM:<sender@example.com>');
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await smtpClient.sendCommand('RCPT TO:<recipient@example.com>');
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// DATA command returns a continuation response (354)
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const dataResponse = await smtpClient.sendCommand('DATA');
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// Parse continuation response
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const contMatch = dataResponse.match(/^(\d{3})[\s-](.*)$/);
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expect(contMatch).toBeTruthy();
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if (contMatch) {
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const [, code, text] = contMatch;
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expect(code).toEqual('354');
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expect(text).toMatch(/mail input|end with/i);
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console.log(`Continuation response: ${code} ${text}`);
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}
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// Send message data
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const messageData = 'Subject: Test\r\n\r\nTest message\r\n.';
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const finalResponse = await smtpClient.sendCommand(messageData);
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// Parse final response
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const finalMatch = finalResponse.match(/^(\d{3})/);
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expect(finalMatch).toBeTruthy();
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expect(finalMatch![1]).toEqual('250');
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await smtpClient.close();
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});
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tap.test('CCMD-07: Parse response text variations', async () => {
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const smtpClient = createSmtpClient({
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host: testServer.hostname,
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port: testServer.port,
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secure: false,
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connectionTimeout: 5000,
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debug: true
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});
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await smtpClient.connect();
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// Different servers may have different response text
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const response = await smtpClient.sendCommand('EHLO testclient.example.com');
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// Extract server identification from first line
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const firstLineMatch = response.match(/^250[\s-](.+?)(?:\r?\n|$)/);
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if (firstLineMatch) {
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const serverIdent = firstLineMatch[1];
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console.log(`Server identification: ${serverIdent}`);
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// Check for common patterns
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const patterns = [
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{ pattern: /ESMTP/, description: 'Extended SMTP' },
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{ pattern: /ready|ok|hello/i, description: 'Greeting' },
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{ pattern: /\d+\.\d+/, description: 'Version number' },
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{ pattern: /[a-zA-Z0-9.-]+/, description: 'Hostname' }
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];
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patterns.forEach(p => {
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if (p.pattern.test(serverIdent)) {
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console.log(` Found: ${p.description}`);
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}
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});
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}
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// Test QUIT response variations
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const quitResponse = await smtpClient.sendCommand('QUIT');
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const quitMatch = quitResponse.match(/^(\d{3})\s+(.*)$/);
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if (quitMatch) {
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const [, code, text] = quitMatch;
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expect(code).toEqual('221');
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// Common QUIT response patterns
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const quitPatterns = ['bye', 'closing', 'goodbye', 'terminating'];
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const foundPattern = quitPatterns.some(p => text.toLowerCase().includes(p));
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console.log(`QUIT response: ${text} (matches pattern: ${foundPattern})`);
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}
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});
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tap.test('cleanup test SMTP server', async () => {
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if (testServer) {
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await testServer.stop();
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}
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});
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export default tap.start();
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