update

2025-05-24 14:39:48 +00:00
parent dc5c0b2584
commit 6e19e30f87
80 changed files with 0 additions and 0 deletions
--- a/test/suite/smtpserver_security/test.sec-07.content-scanning.ts
+++ b/test/suite/smtpserver_security/test.sec-07.content-scanning.ts
@ -0,0 +1,409 @@
+import { tap, expect } from '@git.zone/tstest/tapbundle';
+import * as plugins from '../../../ts/plugins.js';
+import * as net from 'net';
+import { startTestServer, stopTestServer } from '../../helpers/server.loader.js'
+import type { ITestServer } from '../../helpers/server.loader.js';
+
+const TEST_PORT = 2525;
+let testServer: ITestServer;
+
+// Helper to wait for SMTP response
+const waitForResponse = (socket: net.Socket, expectedCode?: string, timeout = 5000): Promise<string> => {
+  return new Promise((resolve, reject) => {
+    let buffer = '';
+    const timer = setTimeout(() => {
+      socket.removeListener('data', handler);
+      reject(new Error(`Timeout waiting for ${expectedCode || 'any'} response`));
+    }, timeout);
+    
+    const handler = (data: Buffer) => {
+      buffer += data.toString();
+      const lines = buffer.split('\r\n');
+      
+      for (const line of lines) {
+        if (expectedCode) {
+          if (line.startsWith(expectedCode + ' ')) {
+            clearTimeout(timer);
+            socket.removeListener('data', handler);
+            resolve(buffer);
+            return;
+          }
+        } else {
+          // Look for any complete response
+          if (line.match(/^\d{3} /)) {
+            clearTimeout(timer);
+            socket.removeListener('data', handler);
+            resolve(buffer);
+            return;
+          }
+        }
+      }
+    };
+    
+    socket.on('data', handler);
+  });
+};
+
+tap.test('setup - start test server', async (toolsArg) => {
+  testServer = await startTestServer({ port: TEST_PORT });
+  await toolsArg.delayFor(1000);
+});
+
+tap.test('Content Scanning - Suspicious content patterns', async (tools) => {
+  const socket = net.createConnection({
+    host: 'localhost',
+    port: TEST_PORT,
+    timeout: 30000
+  });
+  
+  try {
+    // Wait for greeting
+    await waitForResponse(socket, '220');
+    
+    // Send EHLO
+    socket.write('EHLO testclient\r\n');
+    await waitForResponse(socket, '250');
+    
+    // Send MAIL FROM
+    socket.write('MAIL FROM:<sender@example.com>\r\n');
+    await waitForResponse(socket, '250');
+    
+    // Send RCPT TO
+    socket.write('RCPT TO:<recipient@example.com>\r\n');
+    await waitForResponse(socket, '250');
+    
+    // Send DATA
+    socket.write('DATA\r\n');
+    await waitForResponse(socket, '354');
+    
+    // Email with suspicious content
+    const email = [
+      `From: sender@example.com`,
+      `To: recipient@example.com`,
+      `Subject: Content Scanning Test`,
+      `Date: ${new Date().toUTCString()}`,
+      `Message-ID: <content-scan-${Date.now()}@example.com>`,
+      '',
+      'This email contains suspicious content that should trigger content scanning:',
+      'VIRUS_TEST_STRING',
+      'SUSPICIOUS_ATTACHMENT_PATTERN',
+      'MALWARE_SIGNATURE_TEST',
+      'Click here for FREE MONEY!!!',
+      'Visit http://phishing-site.com/steal-data',
+      '.',
+      ''
+    ].join('\r\n');
+    
+    socket.write(email);
+    const dataResponse = await waitForResponse(socket);
+    
+    const accepted = dataResponse.startsWith('250');
+    const rejected = dataResponse.startsWith('550');
+    
+    console.log(`Suspicious content: accepted=${accepted}, rejected=${rejected}`);
+    
+    if (rejected) {
+      console.log('Content scanning active - suspicious content detected');
+    } else {
+      console.log('Content scanning operational - email processed');
+    }
+    
+    expect(accepted || rejected).toEqual(true);
+    
+    socket.write('QUIT\r\n');
+    await waitForResponse(socket, '221').catch(() => {});
+  } finally {
+    socket.destroy();
+  }
+});
+
+tap.test('Content Scanning - Malware patterns', async (tools) => {
+  const socket = net.createConnection({
+    host: 'localhost',
+    port: TEST_PORT,
+    timeout: 30000
+  });
+  
+  try {
+    // Wait for greeting
+    await waitForResponse(socket, '220');
+    
+    // Send EHLO
+    socket.write('EHLO testclient\r\n');
+    await waitForResponse(socket, '250');
+    
+    // Send MAIL FROM
+    socket.write('MAIL FROM:<sender@example.com>\r\n');
+    await waitForResponse(socket, '250');
+    
+    // Send RCPT TO
+    socket.write('RCPT TO:<recipient@example.com>\r\n');
+    await waitForResponse(socket, '250');
+    
+    // Send DATA
+    socket.write('DATA\r\n');
+    await waitForResponse(socket, '354');
+    
+    // Email with malware-like patterns
+    const email = [
+      `From: sender@example.com`,
+      `To: recipient@example.com`,
+      `Subject: Important Security Update`,
+      `Date: ${new Date().toUTCString()}`,
+      `Message-ID: <malware-test-${Date.now()}@example.com>`,
+      'Content-Type: multipart/mixed; boundary="malware-boundary"',
+      '',
+      '--malware-boundary',
+      'Content-Type: text/plain',
+      '',
+      'Please run the attached file to update your security software.',
+      '',
+      '--malware-boundary',
+      'Content-Type: application/x-msdownload; name="update.exe"',
+      'Content-Transfer-Encoding: base64',
+      'Content-Disposition: attachment; filename="update.exe"',
+      '',
+      'TVqQAAMAAAAEAAAA//8AALgAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA',
+      'AAAA4AAAAA4fug4AtAnNIbgBTM0hVGhpcyBwcm9ncmFtIGNhbm5vdCBiZSBydW4gaW4gRE9TIG1v',
+      '',
+      '--malware-boundary--',
+      '.',
+      ''
+    ].join('\r\n');
+    
+    socket.write(email);
+    const dataResponse = await waitForResponse(socket);
+    
+    const accepted = dataResponse.startsWith('250');
+    const rejected = dataResponse.startsWith('550');
+    
+    console.log(`Malware pattern email: ${accepted ? 'accepted' : 'rejected'}`);
+    
+    if (rejected) {
+      console.log('Content scanning active - malware patterns detected');
+    } else {
+      console.log('Content scanning operational - email processed');
+    }
+    
+    expect(accepted || rejected).toEqual(true);
+    
+    socket.write('QUIT\r\n');
+    await waitForResponse(socket, '221').catch(() => {});
+  } finally {
+    socket.destroy();
+  }
+});
+
+tap.test('Content Scanning - Spam keywords', async (tools) => {
+  const socket = net.createConnection({
+    host: 'localhost',
+    port: TEST_PORT,
+    timeout: 30000
+  });
+  
+  try {
+    // Wait for greeting
+    await waitForResponse(socket, '220');
+    
+    // Send EHLO
+    socket.write('EHLO testclient\r\n');
+    await waitForResponse(socket, '250');
+    
+    // Send MAIL FROM
+    socket.write('MAIL FROM:<sender@example.com>\r\n');
+    await waitForResponse(socket, '250');
+    
+    // Send RCPT TO
+    socket.write('RCPT TO:<recipient@example.com>\r\n');
+    await waitForResponse(socket, '250');
+    
+    // Send DATA
+    socket.write('DATA\r\n');
+    await waitForResponse(socket, '354');
+    
+    // Email with spam keywords
+    const email = [
+      `From: sender@example.com`,
+      `To: recipient@example.com`,
+      `Subject: URGENT!!! Act NOW!!! Limited Time OFFER!!!`,
+      `Date: ${new Date().toUTCString()}`,
+      `Message-ID: <spam-test-${Date.now()}@example.com>`,
+      '',
+      'CONGRATULATIONS!!! You have WON!!!',
+      'FREE FREE FREE!!!',
+      'VIAGRA CIALIS CHEAP MEDS!!!',
+      'MAKE $$$ FAST!!!',
+      'WORK FROM HOME!!!',
+      'NO CREDIT CHECK!!!',
+      'GUARANTEED WINNER!!!',
+      'CLICK HERE NOW!!!',
+      'This is NOT SPAM!!!',
+      '.',
+      ''
+    ].join('\r\n');
+    
+    socket.write(email);
+    const dataResponse = await waitForResponse(socket);
+    
+    const accepted = dataResponse.startsWith('250');
+    const rejected = dataResponse.startsWith('550');
+    
+    console.log(`Spam keyword email: ${accepted ? 'accepted' : 'rejected (spam detected)'}`);
+    
+    if (rejected) {
+      console.log('Content scanning active - spam keywords detected');
+    } else {
+      console.log('Content scanning operational - email processed');
+    }
+    
+    expect(accepted || rejected).toEqual(true);
+    
+    socket.write('QUIT\r\n');
+    await waitForResponse(socket, '221').catch(() => {});
+  } finally {
+    socket.destroy();
+  }
+});
+
+tap.test('Content Scanning - Clean legitimate email', async (tools) => {
+  const socket = net.createConnection({
+    host: 'localhost',
+    port: TEST_PORT,
+    timeout: 30000
+  });
+  
+  try {
+    // Wait for greeting
+    await waitForResponse(socket, '220');
+    
+    // Send EHLO
+    socket.write('EHLO testclient\r\n');
+    await waitForResponse(socket, '250');
+    
+    // Send MAIL FROM
+    socket.write('MAIL FROM:<sender@example.com>\r\n');
+    await waitForResponse(socket, '250');
+    
+    // Send RCPT TO
+    socket.write('RCPT TO:<recipient@example.com>\r\n');
+    await waitForResponse(socket, '250');
+    
+    // Send DATA
+    socket.write('DATA\r\n');
+    await waitForResponse(socket, '354');
+    
+    // Clean legitimate email
+    const email = [
+      `From: sender@example.com`,
+      `To: recipient@example.com`,
+      `Subject: Meeting Tomorrow`,
+      `Date: ${new Date().toUTCString()}`,
+      `Message-ID: <clean-email-${Date.now()}@example.com>`,
+      '',
+      'Hi,',
+      '',
+      'Just wanted to confirm our meeting for tomorrow at 2 PM.',
+      'Please let me know if you need to reschedule.',
+      '',
+      'Best regards,',
+      'John',
+      '.',
+      ''
+    ].join('\r\n');
+    
+    socket.write(email);
+    const dataResponse = await waitForResponse(socket, '250');
+    
+    console.log('Clean email accepted - content scanning allows legitimate emails');
+    expect(dataResponse.startsWith('250')).toEqual(true);
+    
+    socket.write('QUIT\r\n');
+    await waitForResponse(socket, '221').catch(() => {});
+  } finally {
+    socket.destroy();
+  }
+});
+
+tap.test('Content Scanning - Large attachment', async (tools) => {
+  const socket = net.createConnection({
+    host: 'localhost',
+    port: TEST_PORT,
+    timeout: 30000
+  });
+  
+  try {
+    // Wait for greeting
+    await waitForResponse(socket, '220');
+    
+    // Send EHLO
+    socket.write('EHLO testclient\r\n');
+    await waitForResponse(socket, '250');
+    
+    // Send MAIL FROM
+    socket.write('MAIL FROM:<sender@example.com>\r\n');
+    await waitForResponse(socket, '250');
+    
+    // Send RCPT TO
+    socket.write('RCPT TO:<recipient@example.com>\r\n');
+    await waitForResponse(socket, '250');
+    
+    // Send DATA
+    socket.write('DATA\r\n');
+    await waitForResponse(socket, '354');
+    
+    // Email with large attachment pattern
+    const largeData = 'A'.repeat(10000); // 10KB of data
+    
+    const email = [
+      `From: sender@example.com`,
+      `To: recipient@example.com`,
+      `Subject: Large Attachment Test`,
+      `Date: ${new Date().toUTCString()}`,
+      `Message-ID: <large-attach-${Date.now()}@example.com>`,
+      'Content-Type: multipart/mixed; boundary="boundary123"',
+      '',
+      '--boundary123',
+      'Content-Type: text/plain',
+      '',
+      'Please find the attached file.',
+      '',
+      '--boundary123',
+      'Content-Type: application/octet-stream; name="largefile.dat"',
+      'Content-Transfer-Encoding: base64',
+      'Content-Disposition: attachment; filename="largefile.dat"',
+      '',
+      Buffer.from(largeData).toString('base64'),
+      '',
+      '--boundary123--',
+      '.',
+      ''
+    ].join('\r\n');
+    
+    socket.write(email);
+    const dataResponse = await waitForResponse(socket);
+    
+    const accepted = dataResponse.startsWith('250');
+    const rejected = dataResponse.startsWith('550') || dataResponse.startsWith('552');
+    
+    console.log(`Large attachment: ${accepted ? 'accepted' : 'rejected (size or content issue)'}`);
+    
+    if (rejected) {
+      console.log('Content scanning active - large attachment blocked');
+    } else {
+      console.log('Content scanning operational - email processed');
+    }
+    
+    expect(accepted || rejected).toEqual(true);
+    
+    socket.write('QUIT\r\n');
+    await waitForResponse(socket, '221').catch(() => {});
+  } finally {
+    socket.destroy();
+  }
+});
+
+tap.test('cleanup - stop test server', async () => {
+  await stopTestServer(testServer);
+});
+
+tap.start();