tmk_core/protocol/usb_hid/arduino-1.0.1/cores/arduino/IPAddress.h

   1 /*
   2  *
   3  * MIT License:
   4  * Copyright (c) 2011 Adrian McEwen
   5  * Permission is hereby granted, free of charge, to any person obtaining a copy
   6  * of this software and associated documentation files (the "Software"), to deal
   7  * in the Software without restriction, including without limitation the rights
   8  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   9  * copies of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included in
  13  * all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  18  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  21  * THE SOFTWARE.
  22  *
  23  * adrianm@mcqn.com 1/1/2011
  24  */
  25
  26 #ifndef IPAddress_h
  27 #define IPAddress_h
  28
  29 #include <Printable.h>
  30
  31 // A class to make it easier to handle and pass around IP addresses
  32
  33 class IPAddress : public Printable {
  34 private:
  35     uint8_t _address[4];  // IPv4 address
  36     // Access the raw byte array containing the address.  Because this returns a pointer
  37     // to the internal structure rather than a copy of the address this function should only
  38     // be used when you know that the usage of the returned uint8_t* will be transient and not
  39     // stored.
  40     uint8_t* raw_address() { return _address; };
  41
  42 public:
  43     // Constructors
  44     IPAddress();
  45     IPAddress(uint8_t first_octet, uint8_t second_octet, uint8_t third_octet, uint8_t fourth_octet);
  46     IPAddress(uint32_t address);
  47     IPAddress(const uint8_t *address);
  48
  49     // Overloaded cast operator to allow IPAddress objects to be used where a pointer
  50     // to a four-byte uint8_t array is expected
  51     operator uint32_t() { return *((uint32_t*)_address); };
  52     bool operator==(const IPAddress& addr) { return (*((uint32_t*)_address)) == (*((uint32_t*)addr._address)); };
  53     bool operator==(const uint8_t* addr);
  54
  55     // Overloaded index operator to allow getting and setting individual octets of the address
  56     uint8_t operator[](int index) const { return _address[index]; };
  57     uint8_t& operator[](int index) { return _address[index]; };
  58
  59     // Overloaded copy operators to allow initialisation of IPAddress objects from other types
  60     IPAddress& operator=(const uint8_t *address);
  61     IPAddress& operator=(uint32_t address);
  62
  63     virtual size_t printTo(Print& p) const;
  64
  65     friend class EthernetClass;
  66     friend class UDP;
  67     friend class Client;
  68     friend class Server;
  69     friend class DhcpClass;
  70     friend class DNSClient;
  71 };
  72
  73 const IPAddress INADDR_NONE(0,0,0,0);
  74
  75
  76 #endif