79 lines
6.6 KiB
JavaScript
79 lines
6.6 KiB
JavaScript
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/**
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* Secure SMTP Server Utility Functions
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* Provides helper functions for creating and managing secure TLS server
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*/
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import * as plugins from '../../../plugins.js';
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import { loadCertificatesFromString, generateSelfSignedCertificates, createTlsOptions } from './certificate-utils.js';
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import { SmtpLogger } from './utils/logging.js';
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/**
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* Create a secure TLS server for direct TLS connections
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* @param options - TLS certificate options
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* @returns A configured TLS server or undefined if TLS is not available
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*/
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export function createSecureTlsServer(options) {
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try {
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// Log the creation attempt
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SmtpLogger.info('Creating secure TLS server for direct connections');
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// Load certificates from strings
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let certificates;
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try {
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certificates = loadCertificatesFromString({
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key: options.key,
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cert: options.cert,
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ca: options.ca
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});
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SmtpLogger.info('Successfully loaded TLS certificates for secure server');
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}
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catch (certificateError) {
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SmtpLogger.warn(`Failed to load certificates, using self-signed: ${certificateError instanceof Error ? certificateError.message : String(certificateError)}`);
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certificates = generateSelfSignedCertificates();
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}
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// Create server-side TLS options
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const tlsOptions = createTlsOptions(certificates, true);
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// Log details for debugging
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SmtpLogger.debug('Creating secure server with options', {
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certificates: {
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keyLength: certificates.key.length,
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certLength: certificates.cert.length,
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caLength: certificates.ca ? certificates.ca.length : 0
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},
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tlsOptions: {
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minVersion: tlsOptions.minVersion,
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maxVersion: tlsOptions.maxVersion,
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ciphers: tlsOptions.ciphers?.substring(0, 50) + '...' // Truncate long cipher list
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}
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});
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// Create the TLS server
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const server = new plugins.tls.Server(tlsOptions);
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// Set up error handlers
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server.on('error', (err) => {
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SmtpLogger.error(`Secure server error: ${err.message}`, {
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component: 'secure-server',
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error: err,
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stack: err.stack
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});
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});
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// Log secure connections
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server.on('secureConnection', (socket) => {
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const protocol = socket.getProtocol();
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const cipher = socket.getCipher();
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SmtpLogger.info('New direct TLS connection established', {
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component: 'secure-server',
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remoteAddress: socket.remoteAddress,
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remotePort: socket.remotePort,
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protocol: protocol || 'unknown',
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cipher: cipher?.name || 'unknown'
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});
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});
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return server;
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}
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catch (error) {
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SmtpLogger.error(`Failed to create secure TLS server: ${error instanceof Error ? error.message : String(error)}`, {
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component: 'secure-server',
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error: error instanceof Error ? error : new Error(String(error)),
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stack: error instanceof Error ? error.stack : 'No stack trace available'
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});
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return undefined;
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}
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}
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