Diff: EthernetInterface/EthernetInterface.h

Revision:

125:96003ae6f1d8

Parent:

5:445d2fc04784

Child:

127:476fed453d4d

--- a/EthernetInterface/EthernetInterface.h	Wed Nov 27 10:20:00 2013 +0000
+++ b/EthernetInterface/EthernetInterface.h	Thu Nov 28 13:53:18 2013 +0000
@@ -43,6 +43,14 @@
 #ifdef __cplusplus    
 }
 #endif
+
+typedef enum
+{
+    INPUT_FILTER,
+    OUTPUT_FILTER
+}filter_type;
+
+#define PORT_ANY    (0)
  /** Interface using Ethernet to connect to an IP-based network
  *
  */
@@ -98,6 +106,38 @@
    */
   static int setDnsServer(const char *);
   
+  /**
+  * Creates a custom rule for dropping packets.
+  * If an incoming packet is destined for our stack and an input filter that matches
+  * input_src & filter_mask == filter_src & filter_mask and the ports are the same, port = 0 means any port and also filters icmp.
+  * the packet will be dropped.
+  * The same thing for an output filter.
+  * If we try to send a packet and 
+  * output_dst & filter_mask == filter_dst & filter_mask and the ports are the same, 
+  * the packet will be dropped.
+  * return > 0 if success, the number is the filter identifier and it will be used later to destroy the filter.
+  * return < 0 error.
+  */
+  static int createIpFilter(char *ipAddress, char * netmask, int port, filter_type filter);
+  
+  /*
+  * This will create a custom filter, more complex than the previous one.
+  * A packet will be dropped if 
+  * packet.port(s) == filter.port(s)
+  * packet.src & filter.src_mask == filter.src & filter.src_mask
+  * packet.dst & filter.dst_mask == filter.dst & filter.dst_mask
+  * if a value is passed null or 0.0.0.0 for address or 0 for port, will be considered as 
+  * accept any.
+  * return > 0 if success, the number is the filter identifier and it will be used later to destroy the filter.
+  * return < 0 error.
+  */
+  
+  static int createIpFilter(char *src, char * src_netmask, int src_port, char *dst, char * dst_netmask, int dst_port);
+  /*
+  * Destroy a custom filter.
+  */
+  static int destroyIpFilter(int filter_id);
+  
 };
 
 #include "TCPSocketConnection.h"