Quadrotor

/*

 *

 * MIT License:

 * Copyright (c) 2011 Adrian McEwen

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to deal

 * in the Software without restriction, including without limitation the rights

 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

 * copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 * 

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 * 

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

 * THE SOFTWARE.

 *

 * adrianm@mcqn.com 1/1/2011

 */

#ifndef IPAddress_h

#define IPAddress_h

#include <Printable.h>

// A class to make it easier to handle and pass around IP addresses

class IPAddress : public Printable {

private:

    uint8_t _address[4];  // IPv4 address

    // Access the raw byte array containing the address.  Because this returns a pointer

    // to the internal structure rather than a copy of the address this function should only

    // be used when you know that the usage of the returned uint8_t* will be transient and not

    // stored.

    uint8_t* raw_address() { return _address; };

public:

    // Constructors

    IPAddress();

    IPAddress(uint8_t first_octet, uint8_t second_octet, uint8_t third_octet, uint8_t fourth_octet);

    IPAddress(uint32_t address);

    IPAddress(const uint8_t *address);

    // Overloaded cast operator to allow IPAddress objects to be used where a pointer

    // to a four-byte uint8_t array is expected

    operator uint32_t() { return *((uint32_t*)_address); };

    bool operator==(const IPAddress& addr) { return (*((uint32_t*)_address)) == (*((uint32_t*)addr._address)); };

    bool operator==(const uint8_t* addr);

    // Overloaded index operator to allow getting and setting individual octets of the address

    uint8_t operator[](int index) const { return _address[index]; };

    uint8_t& operator[](int index) { return _address[index]; };

    // Overloaded copy operators to allow initialisation of IPAddress objects from other types

    IPAddress& operator=(const uint8_t *address);

    IPAddress& operator=(uint32_t address);

    virtual size_t printTo(Print& p) const;

    friend class EthernetClass;

    friend class UDP;

    friend class Client;

    friend class Server;

    friend class DhcpClass;

    friend class DNSClient;

};

const IPAddress INADDR_NONE(0,0,0,0);

#endif