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IpAddressImpl.cpp
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IpAddressImpl.cpp
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// Copyright (C) 2015 Jérôme Leclercq
// This file is part of the "Nazara Engine - Network module"
// For conditions of distribution and use, see copyright notice in Config.hpp
#include <Nazara/Network/Win32/IpAddressImpl.hpp>
#include <Nazara/Core/CallOnExit.hpp>
#include <Nazara/Core/Error.hpp>
#include <Nazara/Network/Win32/SocketImpl.hpp>
#include <cstring>
#include <Nazara/Network/Debug.hpp>
namespace Nz
{
namespace Detail
{
#if NAZARA_CORE_WINDOWS_VISTA
using addrinfoImpl = addrinfoW;
int GetAddressInfo(const String& hostname, const String& service, const addrinfoImpl* hints, addrinfoImpl** results)
{
return GetAddrInfoW(hostname.GetWideString().c_str(), service.GetWideString().c_str(), &hints, &servinfo);
}
int GetHostnameInfo(sockaddr* socketAddress, socklen_t socketLen, String* hostname, String* service, INT flags)
{
std::array<wchar_t, NI_MAXHOST> hostnameBuffer;
std::array<wchar_t, NI_MAXSERV> serviceBuffer;
int result = GetNameInfoW(socketAddress, socketLen, hostnameBuffer.data(), hostnameBuffer.size(), serviceBuffer.data(), serviceBuffer.size(), flags);
if (result == 0)
{
if (hostname)
hostname->Set(hostnameBuffer.data());
if (service)
service->Set(serviceBuffer.data());
}
return result;
}
void FreeAddressInfo(addrinfoImpl* results)
{
FreeAddrInfoW(results);
}
#else
using addrinfoImpl = addrinfo;
int GetAddressInfo(const String& hostname, const String& service, const addrinfoImpl* hints, addrinfoImpl** results)
{
return getaddrinfo(hostname.GetConstBuffer(), service.GetConstBuffer(), hints, results);
}
int GetHostnameInfo(sockaddr* socketAddress, socklen_t socketLen, String* hostname, String* service, INT flags)
{
std::array<char, NI_MAXHOST> hostnameBuffer;
std::array<char, NI_MAXSERV> serviceBuffer;
int result = getnameinfo(socketAddress, socketLen, hostnameBuffer.data(), hostnameBuffer.size(), serviceBuffer.data(), serviceBuffer.size(), flags);
if (result == 0)
{
if (hostname)
hostname->Set(hostnameBuffer.data());
if (service)
service->Set(serviceBuffer.data());
}
return result;
}
void FreeAddressInfo(addrinfoImpl* results)
{
freeaddrinfo(results);
}
#endif
}
IpAddress IpAddressImpl::FromAddrinfo(const addrinfo* info)
{
switch (info->ai_family)
{
case AF_INET:
{
sockaddr_in* ipv4 = reinterpret_cast<sockaddr_in*>(info->ai_addr);
auto& rawIpV4 = ipv4->sin_addr.S_un.S_un_b;
return IpAddress(rawIpV4.s_b1, rawIpV4.s_b2, rawIpV4.s_b3, rawIpV4.s_b4, ntohs(ipv4->sin_port));
}
case AF_INET6:
{
sockaddr_in6* ipv6 = reinterpret_cast<sockaddr_in6*>(info->ai_addr);
auto& rawIpV6 = ipv6->sin6_addr.u.Word;
return IpAddress(rawIpV6[0], rawIpV6[1], rawIpV6[2], rawIpV6[3], rawIpV6[4], rawIpV6[5], rawIpV6[6], rawIpV6[7], ntohs(ipv6->sin6_port));
}
}
return IpAddress::Invalid;
}
IpAddress IpAddressImpl::FromAddrinfo(const addrinfoW* info)
{
switch (info->ai_family)
{
case AF_INET:
{
sockaddr_in* ipv4 = reinterpret_cast<sockaddr_in*>(info->ai_addr);
return FromSockAddr(ipv4);
}
case AF_INET6:
{
sockaddr_in6* ipv6 = reinterpret_cast<sockaddr_in6*>(info->ai_addr);
return FromSockAddr(ipv6);
}
}
return IpAddress::Invalid;
}
IpAddress IpAddressImpl::FromSockAddr(const sockaddr* address)
{
switch (address->sa_family)
{
case AF_INET:
return FromSockAddr(reinterpret_cast<const sockaddr_in*>(address));
case AF_INET6:
return FromSockAddr(reinterpret_cast<const sockaddr_in6*>(address));
}
return IpAddress::Invalid;
}
IpAddress IpAddressImpl::FromSockAddr(const sockaddr_in* addressv4)
{
auto& rawIpV4 = addressv4->sin_addr.S_un.S_un_b;
return IpAddress(rawIpV4.s_b1, rawIpV4.s_b2, rawIpV4.s_b3, rawIpV4.s_b4, ntohs(addressv4->sin_port));
}
IpAddress IpAddressImpl::FromSockAddr(const sockaddr_in6* addressv6)
{
auto& rawIpV6 = addressv6->sin6_addr.u.Word;
return IpAddress(rawIpV6[0], rawIpV6[1], rawIpV6[2], rawIpV6[3], rawIpV6[4], rawIpV6[5], rawIpV6[6], rawIpV6[7], ntohs(addressv6->sin6_port));
}
bool IpAddressImpl::ResolveAddress(const IpAddress& ipAddress, String* hostname, String* service, ResolveError* error)
{
SockAddrBuffer socketAddress;
socklen_t socketAddressLen = ToSockAddr(ipAddress, socketAddress.data());
if (Detail::GetHostnameInfo(reinterpret_cast<sockaddr*>(socketAddress.data()), socketAddressLen, hostname, service, NI_NUMERICSERV) != 0)
{
if (error)
*error = TranslateWSAErrorToResolveError(WSAGetLastError());
return false;
}
if (error)
*error = ResolveError_NoError;
return true;
}
std::vector<HostnameInfo> IpAddressImpl::ResolveHostname(NetProtocol procol, const String& hostname, const String& service, ResolveError* error)
{
std::vector<HostnameInfo> results;
Detail::addrinfoImpl hints;
std::memset(&hints, 0, sizeof(Detail::addrinfoImpl));
hints.ai_family = SocketImpl::TranslateNetProtocolToAF(procol);
hints.ai_flags = AI_CANONNAME;
hints.ai_socktype = SOCK_STREAM;
Detail::addrinfoImpl* servinfo;
if (Detail::GetAddressInfo(hostname, service, &hints, &servinfo) != 0)
{
if (error)
*error = TranslateWSAErrorToResolveError(WSAGetLastError());
return results;
}
CallOnExit onExit([servinfo]()
{
Detail::FreeAddressInfo(servinfo);
});
// loop through all the results and connect to the first we can
for (Detail::addrinfoImpl* p = servinfo; p != nullptr; p = p->ai_next)
{
HostnameInfo result;
result.address = FromAddrinfo(p);
result.canonicalName = String::Unicode(p->ai_canonname);
result.protocol = TranslatePFToNetProtocol(p->ai_family);
result.socketType = TranslateSockToNetProtocol(p->ai_socktype);
results.push_back(result);
}
if (error)
*error = ResolveError_NoError;
return results;
}
socklen_t IpAddressImpl::ToSockAddr(const IpAddress& ipAddress, void* buffer)
{
if (ipAddress.IsValid())
{
switch (ipAddress.GetProtocol())
{
case NetProtocol_IPv4:
{
sockaddr_in* socketAddress = reinterpret_cast<sockaddr_in*>(buffer);
std::memset(socketAddress, 0, sizeof(sockaddr_in));
socketAddress->sin_family = AF_INET;
socketAddress->sin_port = htons(ipAddress.GetPort());
socketAddress->sin_addr.S_un.S_addr = htonl(ipAddress.ToUInt32());
return sizeof(sockaddr_in);
}
case NetProtocol_IPv6:
{
sockaddr_in6* socketAddress = reinterpret_cast<sockaddr_in6*>(buffer);
std::memset(socketAddress, 0, sizeof(sockaddr_in6));
socketAddress->sin6_family = AF_INET6;
socketAddress->sin6_port = htons(ipAddress.GetPort());
IpAddress::IPv6 address = ipAddress.ToIPv6();
for (unsigned int i = 0; i < 8; ++i)
socketAddress->sin6_addr.u.Word[i] = htons(address[i]);
return sizeof(sockaddr_in6);
}
default:
NazaraInternalError("Unhandled ip protocol (0x" + String::Number(ipAddress.GetProtocol()) + ')');
break;
}
}
NazaraError("Invalid ip address");
return 0;
}
NetProtocol IpAddressImpl::TranslatePFToNetProtocol(int family)
{
switch (family)
{
case PF_INET:
return NetProtocol_IPv4;
case PF_INET6:
return NetProtocol_IPv6;
default:
return NetProtocol_Unknown;
}
}
SocketType IpAddressImpl::TranslateSockToNetProtocol(int socketType)
{
switch (socketType)
{
case SOCK_STREAM:
return SocketType_TCP;
case SOCK_DGRAM:
return SocketType_UDP;
case SOCK_RAW:
return SocketType_Raw;
default:
return SocketType_Unknown;
}
}
ResolveError IpAddressImpl::TranslateWSAErrorToResolveError(int error)
{
switch (error)
{
case 0:
return ResolveError_NoError;
// Engine error
case WSAEFAULT:
case WSAEINVAL:
return ResolveError_Internal;
case WSAEAFNOSUPPORT:
case WSAESOCKTNOSUPPORT:
case WSASERVICE_NOT_FOUND:
return ResolveError_ProtocolNotSupported;
case WSAHOST_NOT_FOUND:
return ResolveError_NotFound;
case WSANO_RECOVERY:
return ResolveError_NonRecoverable;
case WSANOTINITIALISED:
return ResolveError_NotInitialized;
case WSA_NOT_ENOUGH_MEMORY:
return ResolveError_ResourceError;
case WSATRY_AGAIN:
return ResolveError_TemporaryFailure;
}
NazaraWarning("Unhandled WinSock error: " + Error::GetLastSystemError(error) + " (" + String::Number(error) + ')');
return ResolveError_Unknown;
}
}