Added VERP support

services/test-server.js

@@ -0,0 +1,103 @@
+'use strict';
+
+let log = require('npmlog');
+let config = require('config');
+let crypto = require('crypto');
+
+let SMTPServer = require('smtp-server').SMTPServer;
+
+// Setup server
+let server = new SMTPServer({
+
+    // log to console
+    logger: false,
+
+    // not required but nice-to-have
+    banner: 'Welcome to My Awesome SMTP Server',
+
+    // disable STARTTLS to allow authentication in clear text mode
+    disabledCommands: ['STARTTLS'],
+
+    // By default only PLAIN and LOGIN are enabled
+    authMethods: ['PLAIN', 'LOGIN', 'CRAM-MD5'],
+
+    // Accept messages up to 10 MB
+    size: 10 * 1024 * 1024,
+
+    // Setup authentication
+    // Allow only users with username 'testuser' and password 'testpass'
+    onAuth: (auth, session, callback) => {
+        let username = 'testuser';
+        let password = 'testpass';
+
+        // check username and password
+        if (auth.username === username &&
+            (
+                auth.method === 'CRAM-MD5' ?
+                auth.validatePassword(password) : // if cram-md5, validate challenge response
+                auth.password === password // for other methods match plaintext passwords
+            )
+        ) {
+            return callback(null, {
+                user: 'userdata' // value could be an user id, or an user object etc. This value can be accessed from session.user afterwards
+            });
+        }
+
+        return callback(new Error('Authentication failed'));
+    },
+
+    // Validate MAIL FROM envelope address. Example allows all addresses that do not start with 'deny'
+    // If this method is not set, all addresses are allowed
+    onMailFrom: (address, session, callback) => {
+        if (/^deny/i.test(address.address)) {
+            return callback(new Error('Not accepted'));
+        }
+        callback();
+    },
+
+    // Validate RCPT TO envelope address. Example allows all addresses that do not start with 'deny'
+    // If this method is not set, all addresses are allowed
+    onRcptTo: (address, session, callback) => {
+        let err;
+
+        if (/^deny/i.test(address.address)) {
+            return callback(new Error('Not accepted'));
+        }
+
+        // Reject messages larger than 100 bytes to an over-quota user
+        if (/^full/i.test(address.address) && Number(session.envelope.mailFrom.args.SIZE) > 100) {
+            err = new Error('Insufficient channel storage: ' + address.address);
+            err.responseCode = 452;
+            return callback(err);
+        }
+
+        callback();
+    },
+
+    // Handle message stream
+    onData: (stream, session, callback) => {
+        let hash = crypto.createHash('md5');
+        stream.on('data', chunk => {
+            hash.update(chunk);
+        });
+        stream.on('end', () => {
+            let err;
+            if (stream.sizeExceeded) {
+                err = new Error('Error: message exceeds fixed maximum message size 10 MB');
+                err.responseCode = 552;
+                return callback(err);
+            }
+            callback(null, 'Message queued as ' + hash.digest('hex')); // accept the message once the stream is ended
+        });
+    }
+});
+
+server.on('error', err => {
+    log.error('TESTSERV', err.stack);
+});
+
+if (config.testserver.enabled) {
+    server.listen(config.testserver.port, config.testserver.host, () => {
+        log.info('TESTSERV', 'Server listening on port %s', config.testserver.port);
+    });
+}