Example #1
0
int main(){
  
  char ip[50];
  generate_ip(ip);
  
  printf("%s\n", ip);
  return 0;
  
}
Example #2
0
      void run(void *)
      {//this keeps the program alive
      	
		 //debug_->debug("%u --- counter = %d\n", radio_->id(), counter);         
         if (mode==1)
         {//if you are not in the network 
            if (counter>=0)
            {//if the counter is positive
               counter++;
               if (counter==4)
               {//if the counter is 4 then you can come in the network
                  debug_->debug("%u:: i'm going in!!\n", radio_->id());
                  send_hello_message();//send hello message
                  mode=0;//change your mode, now you are in the network
               }
               else if (counter!=-1)
               {//if counter is not -1 send participation message (it will not be ofcourse)
                  debug_->debug("(%u - %s - %s)sending participation message %i\n",radio_->id(),my_ip,my_host,counter);
                  send_participate_message();
               }
            }
            else 
            {//else
               if (counter==-1)//if counter is -1, well.. we fix this in other position doesnot need here.. anyway.
               {
                  debug_->debug("oops must resolve it!!!\n");
               }
               generate_ip();
            }
            timer_->set_timer<Zeroconf, &Zeroconf::run>( 5000, this, 0 );//recall run function after 5000miliseconds
         }
         else if (mode==0)
         {//if you are in the network...
            timer_->set_timer<Zeroconf, &Zeroconf::run>( 1000, this, 0 );//recall run function after 5000 miliseconds
			//here we will add code for searching for services if needed, and advertise new services if any.
         }	
      }
Example #3
0
	void handle_participate_message(zeroconf_msg& message)
	{
		msg_data m_data;
		
		memcpy(&m_data, message.payload(), message.payload_size() );


		debug_->debug("receive participate(%u) from (%s)\n",radio_->id(),(char *)message.source());
                  
               if (mode==0)//if node is in the network
	       {//if you receive an other message
                  if (!strcmp((char *)message.destination(),my_ip) || !strcmp(m_data.dest_host,my_host))
                  {//you are the destination
                     //debug_->debug("%s got a message wow!:)(%s)\n",my_ip,message.source_ip);
                     if (!strcmp((char *)message.source(),"0.0.0.0")) //someone is trying to connect with my ip
                     {//if the sender is one whos trying to come in                        
			debug_->debug("found an outsider, i must reply to him\n");
			set_node_message_id(my_MACC,++msgID);
			zeroconf_msg reply;
 			memset(&reply,0,sizeof(reply));
			reply.set_type(TYPE_LEN * sizeof(char), (Os::Radio::block_data_t *) &("participate"));
			reply.set_source(IP_LEN * sizeof(char),(Os::Radio::block_data_t *) &my_ip);
	 		reply.set_destination(IP_LEN * sizeof(char),(Os::Radio::block_data_t *) &("ANY"));
         		reply.set_source_mac(MAC_LEN * sizeof(char),(Os::Radio::block_data_t *) &my_MACC );
	 		reply.set_msg_id(msgID);

			msg_data reply_data;
			strcpy(reply_data.source_host,my_host);
	 		
			reply.set_payload(sizeof(msg_data),(Os::Radio::block_data_t *) &reply_data);
			radio_->send( Os::Radio::BROADCAST_ADDRESS, sizeof(zeroconf_msg), (Os::Radio::block_data_t *)&reply);
                     }
                  } 
                  else 
                  {//else forward the message
                     //strcpy(message.not_ip,my_ip);
                     radio_->send( Os::Radio::BROADCAST_ADDRESS, sizeof(zeroconf_msg), (Os::Radio::block_data_t *)&message);
                  }
               } 
               else if (mode == 1) 
               {//if node is not in the network
				debug_->debug("eimai o 0:m_data.source_host=%s\n",m_data.source_host);	
                  if (!strcmp((char *)message.source(),my_ip)) 
                  {//if you receive message from someone with your ip
                     counter=0;
                     debug_->debug("(%u)WOW someone has my ip.... i must change it?\n",radio_->id());
                     generate_ip();//generate new ip
                  }
						
                  if (!strcmp(m_data.source_host,my_host))
                  {//if you receive message from someone with your hostname
                     debug_->debug("%u === my_host = %s & source_host = %s \n", radio_->id(), my_host, m_data.source_host);
                     counter=0;
                     //generate_hostname();//generate new hostname
					 debug_->debug("(%u)WOW someone has my hostname.... i must change it?\n",radio_->id());
                     resolve_hostname(my_host, trial_num);
                     trial_num = 1;
                  }

                  //someone is claiming the hostname i want at the same time  
                  if (!strcmp(m_data.dest_host,my_host) && strcmp((char *)message.source_mac(),my_MACC))
                  {
                     counter=0;

		     resolve_hostname(my_host, trial_num);
                  }
                  if (!strcmp((char *)message.destination(),my_ip) && strcmp((char *)message.source_mac(),my_MACC))
                  {
                     counter=0;
		     generate_ip();
                  }
                  
               }

	}