forked from townforge/townforge
82 lines
2.6 KiB
C++
82 lines
2.6 KiB
C++
// Copyright (c) 2006-2013, Andrey N. Sabelnikov, www.sabelnikov.net
|
|
// All rights reserved.
|
|
//
|
|
// Redistribution and use in source and binary forms, with or without
|
|
// modification, are permitted provided that the following conditions are met:
|
|
// * Redistributions of source code must retain the above copyright
|
|
// notice, this list of conditions and the following disclaimer.
|
|
// * Redistributions in binary form must reproduce the above copyright
|
|
// notice, this list of conditions and the following disclaimer in the
|
|
// documentation and/or other materials provided with the distribution.
|
|
// * Neither the name of the Andrey N. Sabelnikov nor the
|
|
// names of its contributors may be used to endorse or promote products
|
|
// derived from this software without specific prior written permission.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
|
|
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER BE LIABLE FOR ANY
|
|
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
|
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
//
|
|
|
|
|
|
#pragma once
|
|
|
|
#include <string>
|
|
#include "int-util.h"
|
|
|
|
// IP addresses are kept in network byte order
|
|
// Masks below are little endian
|
|
// -> convert from network byte order to host byte order before comparing
|
|
|
|
namespace epee
|
|
{
|
|
namespace net_utils
|
|
{
|
|
inline
|
|
bool is_ip_local(uint32_t ip)
|
|
{
|
|
ip = SWAP32LE(ip);
|
|
/*
|
|
local ip area
|
|
10.0.0.0 — 10.255.255.255
|
|
172.16.0.0 — 172.31.255.255
|
|
192.168.0.0 — 192.168.255.255
|
|
*/
|
|
if( (ip | 0xffffff00) == 0xffffff0a)
|
|
return true;
|
|
|
|
if( (ip | 0xffff0000) == 0xffffa8c0)
|
|
return true;
|
|
|
|
if( (ip | 0xffffff00) == 0xffffffac)
|
|
{
|
|
uint32_t second_num = (ip >> 8) & 0xff;
|
|
if(second_num >= 16 && second_num <= 31 )
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
inline
|
|
bool is_ip_loopback(uint32_t ip)
|
|
{
|
|
ip = SWAP32LE(ip);
|
|
if( (ip | 0xffffff00) == 0xffffff7f)
|
|
return true;
|
|
//MAKE_IP
|
|
/*
|
|
loopback ip
|
|
127.0.0.0 — 127.255.255.255
|
|
*/
|
|
return false;
|
|
}
|
|
|
|
}
|
|
}
|
|
|