pcapdnet.py 文件源码

def get_if_raw_hwaddr(iff):
    err = create_string_buffer(PCAP_ERRBUF_SIZE)
    devs = POINTER(pcap_if_t)()
    ret = b"\0\0\0\0\0\0"
    if pcap_findalldevs(byref(devs), err) < 0:
      return ret
    try:
      p = devs
      while p:
        if p.contents.name.endswith(iff.encode('ascii')):
          a = p.contents.addresses
          while a:
            if hasattr(socket, 'AF_LINK') and a.contents.addr.contents.sa_family == socket.AF_LINK:
              ap = a.contents.addr
              val = cast(ap, POINTER(sockaddr_dl))
              ret = bytes(val.contents.sdl_data[ val.contents.sdl_nlen : val.contents.sdl_nlen + val.contents.sdl_alen ])
            a = a.contents.next
          break
        p = p.contents.next
      return ret
    finally:
      pcap_freealldevs(devs)