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[NETCFGX] Read IpAddress, SubnetMask, DefaultGateway and DefaultGatewayMetric from the registry

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This commit is contained in:
Eric Kohl
2026-06-24 19:11:04 +02:00
parent 546297fe86
commit 4369126acc
1 changed files with 258 additions and 65 deletions
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dll/win32/netcfgx/tcpipconf_notify.c
+258 -65
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@@ -536,7 +536,7 @@ ExtractParameterValue(
PWSTR pToken, pStart, pEnd, pBuffer;
INT length = 0;
ERR("ExtractParameterValue(%S, %S)\n", pszParameters, pszParameter);
TRACE("ExtractParameterValue(%S, %S)\n", pszParameters, pszParameter);
pToken = wcsstr(pszParameters, pszParameter);
if (pToken == NULL)
@@ -3084,63 +3084,6 @@ InitializeTcpipBasicDlgCtrls(
return S_OK;
}
HRESULT
CopyIpAddrString(
IP_ADDR_STRING * pSrc,
IP_ADDR ** pTarget,
COPY_TYPE Type,
LPWSTR szMetric)
{
IP_ADDR_STRING * pCurrent;
IP_ADDR *pNew, *pLast;
pCurrent = pSrc;
pLast = NULL;
while(pCurrent)
{
pNew = CoTaskMemAlloc(sizeof(IP_ADDR));
if (!pNew)
{
break;
}
ZeroMemory(pNew, sizeof(IP_ADDR));
pNew->IpAddress = GetIpAddressFromStringA(pCurrent->IpAddress.String);
if (!pNew->IpAddress)
{
CoTaskMemFree(pNew);
return E_FAIL;
}
if (Type == SUBMASK)
{
pNew->u.SubnetMask = GetIpAddressFromStringA(pCurrent->IpMask.String);
pNew->NTEContext = pCurrent->Context;
}
else if (Type == METRIC)
{
if (szMetric && szMetric[0] != L'\0')
{
pNew->u.Metric = _wtoi(szMetric);
szMetric += wcslen(szMetric) + 1;
}
}
if (!pLast)
*pTarget = pNew;
else
pLast->Next = pNew;
pLast = pNew;
pCurrent = pCurrent->Next;
}
pLast->Next = NULL;
return S_OK;
}
INT_PTR
CALLBACK
TcpipBasicDlg(
@@ -3621,7 +3564,251 @@ done:
}
HRESULT
ParseNameServer(
LoadAddressSetings(
HKEY hAdapterKey,
AdapterSettings *pAdapter)
{
PWSTR pszBuffer1 = NULL, pszBuffer2 = NULL, pStart1, pStart2, pEnd1, pEnd2;
DWORD dwSize;
IN_ADDR Address, SubnetMask;
IP_ADDR *pNewAddrEntry, *pOldAddrEntry, *pNewLast = NULL, *pOldLast = NULL;
HRESULT hr = S_OK;
NTSTATUS Status;
TRACE("LoadAddressSettings()\n");
dwSize = 0;
RegQueryValueExW(hAdapterKey, L"IpAddress", NULL, NULL, NULL, &dwSize);
if (dwSize == 0)
return S_OK;
pszBuffer1 = CoTaskMemAlloc(dwSize);
if (pszBuffer1 == NULL)
{
hr = E_OUTOFMEMORY;
goto done;
}
if (RegQueryValueExW(hAdapterKey, L"IpAddress", NULL, NULL, (PBYTE)pszBuffer1, &dwSize) != ERROR_SUCCESS)
{
hr = E_FAIL;
goto done;
}
dwSize = 0;
RegQueryValueExW(hAdapterKey, L"SubnetMask", NULL, NULL, NULL, &dwSize);
if (dwSize == 0)
return S_OK;
pszBuffer2 = CoTaskMemAlloc(dwSize);
if (pszBuffer2 == NULL)
{
hr = E_OUTOFMEMORY;
goto done;
}
if (RegQueryValueExW(hAdapterKey, L"SubnetMask", NULL, NULL, (PBYTE)pszBuffer2, &dwSize) != ERROR_SUCCESS)
{
hr = E_FAIL;
goto done;
}
pStart1 = pszBuffer1;
pStart2 = pszBuffer2;
for (;;)
{
TRACE("Start1: %S\n", pStart1);
TRACE("Start2: %S\n", pStart2);
Status = RtlIpv4StringToAddressW(pStart1, TRUE, (LPCWSTR *)&pEnd1, &Address);
if (Status != 0)
{
ERR("RtlIpv4StringToAddressW Status 0x%08lx\n", Status);
hr = E_FAIL;
break;
}
TRACE("Adress: %lx\n", Address.S_un.S_addr);
Status = RtlIpv4StringToAddressW(pStart2, TRUE, (LPCWSTR *)&pEnd2, &SubnetMask);
if (Status != 0)
{
ERR("RtlIpv4StringToAddressW Status 0x%08lx\n", Status);
hr = E_FAIL;
break;
}
TRACE("SubnetMask: %lx\n", SubnetMask.S_un.S_addr);
pNewAddrEntry = CoTaskMemAlloc(sizeof(IP_ADDR));
if (pNewAddrEntry)
{
ZeroMemory(pNewAddrEntry, sizeof(IP_ADDR));
pNewAddrEntry->IpAddress = ntohl(Address.S_un.S_addr);
pNewAddrEntry->u.SubnetMask = ntohl(SubnetMask.S_un.S_addr);;
if (!pNewLast)
pAdapter->NewIp = pNewAddrEntry;
else
pNewLast->Next = pNewAddrEntry;
pNewLast = pNewAddrEntry;
}
pOldAddrEntry = CoTaskMemAlloc(sizeof(IP_ADDR));
if (pOldAddrEntry)
{
ZeroMemory(pOldAddrEntry, sizeof(IP_ADDR));
pOldAddrEntry->IpAddress = ntohl(Address.S_un.S_addr);
pOldAddrEntry->u.SubnetMask = ntohl(SubnetMask.S_un.S_addr);;
if (!pOldLast)
pAdapter->OldIp = pOldAddrEntry;
else
pOldLast->Next = pOldAddrEntry;
pOldLast = pOldAddrEntry;
}
pStart1 = pEnd1 + 1;
pStart2 = pEnd2 + 1;
if ((*pStart1 == UNICODE_NULL) || (*pStart2 == UNICODE_NULL))
break;
}
done:
if (pszBuffer1)
CoTaskMemFree(pszBuffer1);
if (pszBuffer2)
CoTaskMemFree(pszBuffer2);
return hr;
}
HRESULT
LoadGatewaySettings(
HKEY hAdapterKey,
AdapterSettings *pAdapter)
{
PWSTR pszBuffer1 = NULL, pszBuffer2 = NULL, pStart1, pStart2, pEnd1, pEnd2;
DWORD dwSize, dwMetric;
IN_ADDR Address;
IP_ADDR *pNewAddrEntry, *pOldAddrEntry, *pNewLast = NULL, *pOldLast = NULL;
HRESULT hr = S_OK;
NTSTATUS Status;
TRACE("LoadGatewaySettings()\n");
dwSize = 0;
RegQueryValueExW(hAdapterKey, L"DefaultGateway", NULL, NULL, NULL, &dwSize);
if (dwSize == 0)
return S_OK;
pszBuffer1 = CoTaskMemAlloc(dwSize);
if (pszBuffer1 == NULL)
{
hr = E_OUTOFMEMORY;
goto done;
}
if (RegQueryValueExW(hAdapterKey, L"DefaultGateway", NULL, NULL, (PBYTE)pszBuffer1, &dwSize) != ERROR_SUCCESS)
{
hr = E_FAIL;
goto done;
}
dwSize = 0;
RegQueryValueExW(hAdapterKey, L"DefaultGatewayMetric", NULL, NULL, NULL, &dwSize);
if (dwSize == 0)
return S_OK;
pszBuffer2 = CoTaskMemAlloc(dwSize);
if (pszBuffer2 == NULL)
{
hr = E_OUTOFMEMORY;
goto done;
}
if (RegQueryValueExW(hAdapterKey, L"DefaultGatewayMetric", NULL, NULL, (PBYTE)pszBuffer2, &dwSize) != ERROR_SUCCESS)
{
hr = E_FAIL;
goto done;
}
pStart1 = pszBuffer1;
pStart2 = pszBuffer2;
for (;;)
{
TRACE("Start1: %S\n", pStart1);
TRACE("Start2: %S\n", pStart2);
Status = RtlIpv4StringToAddressW(pStart1, TRUE, (LPCWSTR *)&pEnd1, &Address);
if (Status != 0)
{
ERR("RtlIpv4StringToAddressW Status 0x%08lx\n", Status);
hr = E_FAIL;
break;
}
TRACE("Adress: %lx\n", Address.S_un.S_addr);
dwMetric = wcstoul(pStart2, &pEnd2, 10);
if (dwMetric > 9999)
dwMetric = 9999;
TRACE("Metric: %lu\n", dwMetric);
pNewAddrEntry = CoTaskMemAlloc(sizeof(IP_ADDR));
if (pNewAddrEntry)
{
ZeroMemory(pNewAddrEntry, sizeof(IP_ADDR));
pNewAddrEntry->IpAddress = ntohl(Address.S_un.S_addr);
pNewAddrEntry->u.Metric = (USHORT)dwMetric;
if (!pNewLast)
pAdapter->NewGw = pNewAddrEntry;
else
pNewLast->Next = pNewAddrEntry;
pNewLast = pNewAddrEntry;
}
pOldAddrEntry = CoTaskMemAlloc(sizeof(IP_ADDR));
if (pOldAddrEntry)
{
ZeroMemory(pOldAddrEntry, sizeof(IP_ADDR));
pOldAddrEntry->IpAddress = ntohl(Address.S_un.S_addr);
pOldAddrEntry->u.Metric = (USHORT)dwMetric;
if (!pOldLast)
pAdapter->OldGw = pOldAddrEntry;
else
pOldLast->Next = pOldAddrEntry;
pOldLast = pOldAddrEntry;
}
pStart1 = pEnd1 + 1;
pStart2 = pEnd2 + 1;
if ((*pStart1 == UNICODE_NULL) || (*pStart2 == UNICODE_NULL))
break;
}
done:
if (pszBuffer1)
CoTaskMemFree(pszBuffer1);
if (pszBuffer2)
CoTaskMemFree(pszBuffer2);
return hr;
}
HRESULT
LoadNameServerSettings(
HKEY hAdapterKey,
AdapterSettings *pAdapter)
{
@@ -3654,9 +3841,9 @@ ParseNameServer(
for (;;)
{
Status = RtlIpv4StringToAddressW(pStart, TRUE, (LPCWSTR *)&pEnd, &Address);
TRACE("RtlIpv4StringToAddressW Status 0x%08lx\n", Status);
if (Status != 0)
{
ERR("RtlIpv4StringToAddressW Status 0x%08lx\n", Status);
hr = E_FAIL;
break;
}
@@ -3716,6 +3903,8 @@ LoadAdapterSettings(
DWORD dwSize;
HRESULT hr = S_OK;
TRACE("LoadAdapterSettings()\n");
pAdapter = (AdapterSettings*)CoTaskMemAlloc(sizeof(AdapterSettings));
if (!pAdapter)
return E_FAIL;
@@ -3738,14 +3927,18 @@ LoadAdapterSettings(
if (!pAdapterInfo->DhcpEnabled)
{
CopyIpAddrString(&pAdapterInfo->IpAddressList, &pAdapter->NewIp, SUBMASK, NULL);
CopyIpAddrString(&pAdapterInfo->IpAddressList, &pAdapter->OldIp, SUBMASK, NULL);
hr = LoadAddressSetings(hAdapterKey, pAdapter);
if (FAILED(hr))
goto done;
}
CopyIpAddrString(&pAdapterInfo->GatewayList, &pAdapter->NewGw, METRIC, NULL);
CopyIpAddrString(&pAdapterInfo->GatewayList, &pAdapter->OldGw, METRIC, NULL);
hr = LoadGatewaySettings(hAdapterKey, pAdapter);
if (FAILED(hr))
goto done;
ParseNameServer(hAdapterKey, pAdapter);
hr = LoadNameServerSettings(hAdapterKey, pAdapter);
if (FAILED(hr))
goto done;
pAdapter->DnsDhcpEnabled = (pAdapter->NewDhcpEnabled && (pAdapter->NewNs == NULL));