Merge pull request #20 from yiannist/feature-expose-hw-addr

Expose packet's HW addr

netfilterqueue.pxd

@@ -170,6 +170,7 @@ cdef class Packet:
     cdef nfq_q_handle *_qh
     cdef nfq_data *_nfa
     cdef nfqnl_msg_packet_hdr *_hdr
+    cdef nfqnl_msg_packet_hw *_hw
     cdef bint _verdict_is_set # True if verdict has been issued,
         # false otherwise
     cdef bint _mark_is_set # True if a mark has been given, false otherwise
@@ -186,6 +187,8 @@ cdef class Packet:
     cdef Py_ssize_t payload_len
     cdef readonly char *payload
     cdef timeval timestamp
+    cdef u_int8_t hw_addr[8]
+
     # TODO: implement these
     #cdef u_int8_t hw_addr[8] # A eui64-formatted address?
     #cdef readonly u_int32_t nfmark

netfilterqueue.pyx

@@ -57,10 +57,12 @@ cdef class Packet:
         self._qh = qh
         self._nfa = nfa
         self._hdr = nfq_get_msg_packet_hdr(nfa)
+        self._hw = nfq_get_packet_hw(nfa)
 
         self.id = ntohl(self._hdr.packet_id)
         self.hw_protocol = ntohs(self._hdr.hw_protocol)
         self.hook = self._hdr.hook
+        self.hw_addr = self._hw.hw_addr
 
         self.payload_len = nfq_get_payload(self._nfa, &self.payload)
         if self.payload_len < 0:
@@ -97,6 +99,15 @@ cdef class Packet:
 
         self._verdict_is_set = True
 
+    def get_hw(self):
+        """Return the hardware address as Python string."""
+        cdef object py_string
+        if cpython.version.PY_MAJOR_VERSION >= 3:
+            py_string = PyBytes_FromStringAndSize(<char*>self.hw_addr, 8)
+        else:
+            py_string = PyString_FromStringAndSize(<char*>self.hw_addr, 8)
+        return py_string
+
     def get_payload(self):
         """Return payload as Python string."""
         cdef object py_string