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Network.cpp
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/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the LICENSE file distributed with
* this work for additional information regarding copyright ownership.
*
* Also, if exists, check the Licenses directory for information about
* third-party modules.
*
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "Network.h"
#include "System.h"
#include <AutoPtr.h>
#include <IPTypes.h>
#include <IPHlpApi.h>
#pragma comment(lib, "iphlpapi.lib")
//-----------------------------------------------------------
namespace MX {
namespace Network {
HRESULT GetLocalIpAddresses(_Out_ TArrayListWithFree<LPCWSTR> &cStrListW, _In_ eLocalIpAddressesFlags nFlags)
{
TAutoFreePtr<IP_ADAPTER_ADDRESSES> cIpAddrBuffer;
PIP_ADAPTER_ADDRESSES lpCurrAdapter;
PIP_ADAPTER_UNICAST_ADDRESS lpCurrUnicastAddress;
DWORD dwBufLen, dwRetVal, dwRetryCount;
SIZE_T nIpV4InsertPos;
union {
sockaddr_in *lpAddrV4;
SOCKADDR_IN6_W2KSP1 *lpAddrV6;
SOCKADDR_INET *lpAddr;
} u;
CStringW cStrTempW;
HRESULT hRes;
cStrListW.RemoveAllElements();
//query addresses
dwBufLen = 16384;
for (dwRetryCount=20; dwRetryCount>0; dwRetryCount--)
{
cIpAddrBuffer.Attach((IP_ADAPTER_ADDRESSES*)MX_MALLOC(dwBufLen));
if (!cIpAddrBuffer)
return E_OUTOFMEMORY;
dwRetVal = ::GetAdaptersAddresses(AF_UNSPEC, GAA_FLAG_SKIP_ANYCAST|GAA_FLAG_SKIP_MULTICAST|GAA_FLAG_SKIP_DNS_SERVER|
GAA_FLAG_SKIP_FRIENDLY_NAME, NULL, cIpAddrBuffer.Get(), &dwBufLen);
if (dwRetVal != ERROR_BUFFER_OVERFLOW)
break;
}
if (dwRetVal != NO_ERROR)
return MX_HRESULT_FROM_WIN32(dwRetVal);
//enum addresses
nIpV4InsertPos = 0;
for (lpCurrAdapter=cIpAddrBuffer.Get(); lpCurrAdapter!=NULL; lpCurrAdapter=lpCurrAdapter->Next)
{
if (lpCurrAdapter->PhysicalAddressLength == 0)
continue;
if (lpCurrAdapter->IfType == IF_TYPE_SOFTWARE_LOOPBACK)
continue;
if (lpCurrAdapter->Description[0] == L'V')
continue; //VirtualBox VMnet
if (StrFindW(lpCurrAdapter->Description, L"loopback", FALSE, TRUE) != NULL)
continue;
for (lpCurrUnicastAddress=lpCurrAdapter->FirstUnicastAddress; lpCurrUnicastAddress!=NULL;
lpCurrUnicastAddress=lpCurrUnicastAddress->Next)
{
if ((lpCurrUnicastAddress->Flags & IP_ADAPTER_ADDRESS_DNS_ELIGIBLE) == 0)
continue;
if ((lpCurrUnicastAddress->Flags & IP_ADAPTER_ADDRESS_TRANSIENT) != 0)
continue;
switch (lpCurrUnicastAddress->Address.lpSockaddr->sa_family)
{
case AF_INET:
if ((nFlags & eLocalIpAddressesFlags::DontAddIpV4) != (eLocalIpAddressesFlags)0)
break;
u.lpAddrV4 = (sockaddr_in*)(lpCurrUnicastAddress->Address.lpSockaddr);
//ignore zero & local host
if (u.lpAddrV4->sin_addr.S_un.S_un_b.s_b2 == 0 && u.lpAddrV4->sin_addr.S_un.S_un_b.s_b3 == 0)
{
if ((u.lpAddrV4->sin_addr.S_un.S_un_b.s_b1 == 0 && u.lpAddrV4->sin_addr.S_un.S_un_b.s_b4 == 0) ||
(u.lpAddrV4->sin_addr.S_un.S_un_b.s_b1 == 127 && u.lpAddrV4->sin_addr.S_un.S_un_b.s_b4 == 1))
{
break;
}
}
//add
hRes = FormatIpAddress(cStrTempW, u.lpAddr);
if (FAILED(hRes))
return hRes;
if (cStrListW.InsertElementAt((LPWSTR)cStrTempW, nIpV4InsertPos) == FALSE)
return E_OUTOFMEMORY;
cStrTempW.Detach();
nIpV4InsertPos++;
break;
case AF_INET6:
if ((nFlags & eLocalIpAddressesFlags::DontAddIpV6) != (eLocalIpAddressesFlags)0)
break;
u.lpAddrV6 = (SOCKADDR_IN6_W2KSP1*)(lpCurrUnicastAddress->Address.lpSockaddr);
//ignore zero & localhost
if (u.lpAddrV6->sin6_addr.u.Word[0] == 0 && u.lpAddrV6->sin6_addr.u.Word[1] == 0 &&
u.lpAddrV6->sin6_addr.u.Word[2] == 0 && u.lpAddrV6->sin6_addr.u.Word[3] == 0 &&
u.lpAddrV6->sin6_addr.u.Word[4] == 0 && u.lpAddrV6->sin6_addr.u.Word[5] == 0 &&
u.lpAddrV6->sin6_addr.u.Word[6] == 0 && u.lpAddrV6->sin6_addr.u.Word[7] < 2)
{
break;
}
//ignore local
if (u.lpAddrV6->sin6_addr.u.Word[0] >= 0xFE80 && u.lpAddrV6->sin6_addr.u.Word[1] == 0xFEBF)
break;
//ignore special use
if (u.lpAddrV6->sin6_addr.u.Word[0] == 2001 && u.lpAddrV6->sin6_addr.u.Word[1] == 0)
break;
//add
hRes = FormatIpAddress(cStrTempW, u.lpAddr);
if (FAILED(hRes))
return hRes;
if (cStrListW.AddElement((LPWSTR)cStrTempW) == FALSE)
return E_OUTOFMEMORY;
cStrTempW.Detach();
break;
}
}
}
if ((nFlags & eLocalIpAddressesFlags::DontAddNetbiosName) == (eLocalIpAddressesFlags)0)
{
hRes = System::_GetComputerNameEx(ComputerNameDnsFullyQualified, cStrTempW);
if (FAILED(hRes))
return hRes;
if (cStrTempW.IsEmpty() == FALSE)
{
if (cStrListW.InsertElementAt((LPWSTR)cStrTempW, 0) == FALSE)
return E_OUTOFMEMORY;
cStrTempW.Detach();
}
}
//done
return (cStrListW.GetCount() > 0) ? S_OK : MX_E_NotFound;
}
HRESULT FormatIpAddress(_Out_ CStringW &cStrW, _In_ PSOCKADDR_INET lpAddr)
{
SIZE_T nIdx;
cStrW.Empty();
if (lpAddr == NULL)
return E_POINTER;
switch (lpAddr->si_family)
{
case AF_INET:
if (cStrW.Format(L"%lu.%lu.%lu.%lu", lpAddr->Ipv4.sin_addr.S_un.S_un_b.s_b1,
lpAddr->Ipv4.sin_addr.S_un.S_un_b.s_b2, lpAddr->Ipv4.sin_addr.S_un.S_un_b.s_b3,
lpAddr->Ipv4.sin_addr.S_un.S_un_b.s_b4) == FALSE)
{
return E_OUTOFMEMORY;
}
break;
case AF_INET6:
if (cStrW.CopyN(L"[", 1) == FALSE)
return E_OUTOFMEMORY;
for (nIdx=0; nIdx<8; nIdx++)
{
if (lpAddr->Ipv6.sin6_addr.u.Word[nIdx] == 0)
break;
if (cStrW.AppendFormat(L"%04X", lpAddr->Ipv6.sin6_addr.u.Word[nIdx]) == FALSE)
return E_OUTOFMEMORY;
if (nIdx < 8)
{
if (cStrW.ConcatN(L":", 1) == FALSE)
return E_OUTOFMEMORY;
}
}
if (nIdx < 8)
{
if (cStrW.ConcatN(L"::", 2) == FALSE)
return E_OUTOFMEMORY;
while (nIdx < 8 && lpAddr->Ipv6.sin6_addr.u.Word[nIdx] == 0)
nIdx++;
while (nIdx < 7)
{
if (cStrW.AppendFormat(L"%04X:", lpAddr->Ipv6.sin6_addr.u.Word[nIdx]) == FALSE)
return E_OUTOFMEMORY;
nIdx++;
}
if (nIdx < 8)
{
if (cStrW.AppendFormat(L"%04X", lpAddr->Ipv6.sin6_addr.u.Word[nIdx]) == FALSE)
return E_OUTOFMEMORY;
}
}
if (cStrW.ConcatN(L"]", 1) == FALSE)
return E_OUTOFMEMORY;
break;
default:
return MX_E_Unsupported;
}
return S_OK;
}
}; //namespace Network
}; //namespace MX