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109 lines
3.2 KiB
C++
109 lines
3.2 KiB
C++
/*
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* Copyright (c) 2010-2013 BitTorrent, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#include <winsock2.h>
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#include <ws2tcpip.h>
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#include "libutp_inet_ntop.h"
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//######################################################################
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const char *libutp::inet_ntop(int af, const void *src, char *dest, size_t length)
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{
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if (af != AF_INET && af != AF_INET6)
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{
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return NULL;
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}
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SOCKADDR_STORAGE address;
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DWORD address_length;
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if (af == AF_INET)
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{
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address_length = sizeof(sockaddr_in);
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sockaddr_in* ipv4_address = (sockaddr_in*)(&address);
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ipv4_address->sin_family = AF_INET;
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ipv4_address->sin_port = 0;
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memcpy(&ipv4_address->sin_addr, src, sizeof(in_addr));
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}
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else // AF_INET6
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{
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address_length = sizeof(sockaddr_in6);
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sockaddr_in6* ipv6_address = (sockaddr_in6*)(&address);
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ipv6_address->sin6_family = AF_INET6;
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ipv6_address->sin6_port = 0;
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ipv6_address->sin6_flowinfo = 0;
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// hmmm
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ipv6_address->sin6_scope_id = 0;
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memcpy(&ipv6_address->sin6_addr, src, sizeof(in6_addr));
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}
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DWORD string_length = (DWORD)(length);
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int result;
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result = WSAAddressToStringA((sockaddr*)(&address),
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address_length, 0, dest,
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&string_length);
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// one common reason for this to fail is that ipv6 is not installed
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return result == SOCKET_ERROR ? NULL : dest;
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}
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//######################################################################
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int libutp::inet_pton(int af, const char* src, void* dest)
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{
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if (af != AF_INET && af != AF_INET6)
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{
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return -1;
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}
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SOCKADDR_STORAGE address;
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int address_length = sizeof(SOCKADDR_STORAGE);
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int result = WSAStringToAddressA((char*)(src), af, 0,
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(sockaddr*)(&address),
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&address_length);
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if (af == AF_INET)
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{
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if (result != SOCKET_ERROR)
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{
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sockaddr_in* ipv4_address =(sockaddr_in*)(&address);
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memcpy(dest, &ipv4_address->sin_addr, sizeof(in_addr));
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}
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else if (strcmp(src, "255.255.255.255") == 0)
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{
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((in_addr*)(dest))->s_addr = INADDR_NONE;
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}
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}
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else // AF_INET6
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{
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if (result != SOCKET_ERROR)
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{
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sockaddr_in6* ipv6_address = (sockaddr_in6*)(&address);
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memcpy(dest, &ipv6_address->sin6_addr, sizeof(in6_addr));
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}
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}
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return result == SOCKET_ERROR ? -1 : 1;
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}
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