Example #1
0
void IRC_Client::process_command(std::string command, Host & host)
{
	std::smatch result;
	std::string datagram_id = host.get_name();
    if (std::regex_search(command, result, std::regex("^CONNECT ([\\w\\d]+)\\s+(\\d+)$")))
    { // precisa de DNS
    	datagram_id = datagram_id + "." + std::to_string(host.get_count_and_add());
    	std::string content = std::string(result[1]) + " A IN";
    	host.add_to_send_datagram_queue(Datagram(host.ip_, host.dns_server_ip_, new UDP_Segment(DNS_CLIENT_PORT, DNS_SERVER_PORT, content), datagram_id));
    	commands_waiting_for_dns.push_back(command);
    }
    else if (std::regex_search(command, result, std::regex("^CONNECT ([\\d\\.]+)\\s+(\\d+)$")))
    { // não precisa de DNS
    	datagram_id = datagram_id + "." + std::to_string(host.get_count_and_add());
    	std::string content = "CONNECT";
    	std::string destination_ip = result[1];
    	int destination_port = stoi(result[2]);
    	std::string source_ip = host.ip_;
    	int source_port = IRC_CLIENT_PORT;

    	host.add_to_send_datagram_queue(Datagram(source_ip, destination_ip, new UDP_Segment(source_port, destination_port, content), datagram_id));
    }
    else if (std::regex_search(command, result, std::regex("^USER ([\\w\\d]+)$"))
    	|| std::regex_search(command, result, std::regex("^QUIT$")))
    {
    	if (!connected_server_ip.empty() && connected_server_port != -1)
    	{
    		datagram_id = datagram_id + "." + std::to_string(host.get_count_and_add());
	    	std::string source_ip = host.ip_;
	    	int source_port = IRC_CLIENT_PORT;
	    	std::string destination_ip = connected_server_ip;
	    	int destination_port = connected_server_port;
	    	host.add_to_send_datagram_queue(Datagram(source_ip, destination_ip, new UDP_Segment(source_port, destination_port, command), datagram_id));
	    }
	    else
	    	printf("Cliente IRC não conectado a nenhum servidor\n");
    }
    else
    	printf("Comando desconhecido no %s\n", host.get_name().c_str());
}
Example #2
0
void IRC_Server::receive_datagram(Datagram datagram, Host & host)
{
	std::smatch result;
    std::string datagram_id = host.get_name();
	std::string message = datagram.get_message();
    if (std::regex_search(message, result, std::regex("^CONNECT$"))
    	|| std::regex_search(message, result, std::regex("^USER [\\w\\d]+$"))
    	|| std::regex_search(message, result, std::regex("^QUIT$"))
    	)
    {
        datagram_id = datagram_id + "." + std::to_string(host.get_count_and_add());
    	std::string source_ip = host.ip_;
        int source_port = IRC_SERVER_PORT;
		std::string destination_ip = datagram.get_source_ip();
        int destination_port = datagram.get_source_port();
		std::string content = ":" + host.get_name() + " " + message;
    	host.add_to_send_datagram_queue(Datagram(source_ip, destination_ip, new UDP_Segment(source_port, destination_port, content), datagram_id));
    }
}