From dbfdc2783156cfeede5114735ae018a925b3fa78 Mon Sep 17 00:00:00 2001
From: lgandx <lgandx@github.com>
Date: Wed, 18 Dec 2013 07:11:22 -0500
Subject: [PATCH] Removed bind to interface support for OsX. Responder for OsX
 can only listen on all interfaces.

---
 Responder.conf |  4 ----
 Responder.py   | 54 ++++++++++++++++++++++++++++++++++----------------
 2 files changed, 37 insertions(+), 21 deletions(-)

diff --git a/Responder.conf b/Responder.conf
index 93fb502..e0332bb 100644
--- a/Responder.conf
+++ b/Responder.conf
@@ -12,10 +12,6 @@ LDAP = On
 ;Set a custom challenge
 Challenge = 1122334455667788
 ;
-;Set a network interface if you want to bind responder to a specific network interface. 
-;Default is eth0, which means Responder will listen on eth0 interfaces.
-Bind_to = eth0
-;
 ;Set this to change the default logging file 
 SessionLog = Responder-Session.log
 ;
diff --git a/Responder.py b/Responder.py
index e6f3c11..2dff36c 100644
--- a/Responder.py
+++ b/Responder.py
@@ -52,7 +52,6 @@ config = ConfigParser.ConfigParser()
 config.read('Responder.conf')
 
 # Set some vars.
-BIND_TO_Interface = config.get('Responder Core', 'Bind_to')
 On_Off = config.get('Responder Core', 'HTTP').upper()
 SSL_On_Off = config.get('Responder Core', 'HTTPS').upper()
 SMB_On_Off = config.get('Responder Core', 'SMB').upper()
@@ -77,17 +76,34 @@ Basic = options.Basic.upper()
 Finger_On_Off = options.Finger.upper()
 INTERFACE = options.INTERFACE
 
-if BIND_TO_Interface == None:
-   BIND_TO_Interface = 'eth0'
-
 if INTERFACE != "Not set":
    BIND_TO_Interface = INTERFACE
 
+if INTERFACE == "Not set":
+   BIND_TO_Interface = "ALL" 
+
 if len(NumChal) is not 16:
    print "The challenge must be exactly 16 chars long.\nExample: -c 1122334455667788\n"
    parser.print_help()
    exit(-1)
 
+def IsOsX():
+   Os_version = sys.platform
+   if Os_version == "darwin":
+      return True
+   else:
+      return False
+
+def OsInterfaceIsSupported(INTERFACE):
+    if INTERFACE != "Not set":
+       if IsOsX():
+          print "OsX Bind to interface is not supported.. listening on all interfaces."
+          return False
+       else:
+          return True
+    if INTERFACE == "Not set":
+       return False
+
 #Logger
 import logging
 logging.basicConfig(filename=str(SessionLog),level=logging.INFO,format='%(asctime)s %(message)s', datefmt='%m/%d/%Y %I:%M:%S %p')
@@ -741,11 +757,12 @@ def RunLLMNR():
       MADDR = "224.0.0.252"
       MPORT = 5355
       sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDP)
-      try:
-         sock.setsockopt(socket.SOL_SOCKET, 25, BIND_TO_Interface+'\0')
-      except:
-         print "Non existant network interface provided in Responder.conf, please provide a valid interface."
-         sys.exit(1)
+      if OsInterfaceIsSupported(INTERFACE):
+         try:
+            sock.setsockopt(socket.SOL_SOCKET, 25, BIND_TO_Interface+'\0')
+         except:
+            print "Non existant network interface provided in Responder.conf, please provide a valid interface."
+            sys.exit(1)
       sock.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1)
       sock.bind((ALL,MPORT))
       sock.setsockopt(socket.IPPROTO_IP, socket.IP_MULTICAST_TTL, 255)
@@ -1507,19 +1524,21 @@ def Is_DNS_On(DNS_On_Off):
 class ThreadingUDPServer(ThreadingMixIn, UDPServer):
     
     def server_bind(self):
-        try:
-           self.socket.setsockopt(socket.SOL_SOCKET, 25, BIND_TO_Interface+'\0')
-        except:
-           print "Non existant network interface provided in Responder.conf, please provide a valid interface."
+        if OsInterfaceIsSupported(INTERFACE):
+           try:
+              self.socket.setsockopt(socket.SOL_SOCKET, 25, BIND_TO_Interface+'\0')
+           except:
+              print "Non existant network interface provided in Responder.conf, please provide a valid interface."
         UDPServer.server_bind(self)
 
 class ThreadingTCPServer(ThreadingMixIn, TCPServer):
     
     def server_bind(self):
-        try:
-           self.socket.setsockopt(socket.SOL_SOCKET, 25, BIND_TO_Interface+'\0')
-        except:
-           print "Non existant network interface provided in Responder.conf, please provide a valid interface."
+        if OsInterfaceIsSupported(INTERFACE):
+           try:
+              self.socket.setsockopt(socket.SOL_SOCKET, 25, BIND_TO_Interface+'\0')
+           except:
+              print "Non existant network interface provided in Responder.conf, please provide a valid interface."
         TCPServer.server_bind(self)
 
 ThreadingUDPServer.allow_reuse_address = 1
@@ -1575,3 +1594,4 @@ if __name__ == '__main__':
 
 
 
+