private static string GetResourceNetworkName(SafeHResource hResource)
{
uint nSize = 0x40;
StringBuilder lpBuffer = new StringBuilder((int) nSize);
bool flag = SafeNativeMethods.GetClusterResourceNetworkName(hResource, lpBuffer, ref nSize);
int num2 = Marshal.GetLastWin32Error();
if (!flag)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ConfigurationProviderException(Microsoft.Transactions.SR.GetString("GetClusterResourceNetworkNameFailed", new object[] { num2 })));
}
return lpBuffer.ToString();
}
private static string GetResourceNetworkName(SafeHResource hResource)
{
uint nSize = 0x40;
StringBuilder lpBuffer = new StringBuilder((int)nSize);
bool flag = SafeNativeMethods.GetClusterResourceNetworkName(hResource, lpBuffer, ref nSize);
int num2 = Marshal.GetLastWin32Error();
if (!flag)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ConfigurationProviderException(Microsoft.Transactions.SR.GetString("GetClusterResourceNetworkNameFailed", new object[] { num2 })));
}
return(lpBuffer.ToString());
}
public ClusterRegistryConfigurationProvider(SafeHResource hResource)
{
this.hKey = Microsoft.Transactions.Wsat.Clusters.SafeNativeMethods.GetClusterResourceKey(hResource, RegistryRights.ExecuteKey);
if (this.hKey.IsInvalid)
{
int num = Marshal.GetLastWin32Error();
this.hKey.SetHandleAsInvalid();
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ConfigurationProviderException(Microsoft.Transactions.SR.GetString("GetClusterResourceKeyFailed", new object[] { num })));
}
if (DebugTrace.Verbose)
{
DebugTrace.Trace(TraceLevel.Verbose, "Opened cluster resource key");
}
}
public ClusterRegistryConfigurationProvider(SafeHResource hResource)
{
this.hKey = Microsoft.Transactions.Wsat.Clusters.SafeNativeMethods.GetClusterResourceKey(hResource, RegistryRights.ExecuteKey);
if (this.hKey.IsInvalid)
{
int num = Marshal.GetLastWin32Error();
this.hKey.SetHandleAsInvalid();
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ConfigurationProviderException(Microsoft.Transactions.SR.GetString("GetClusterResourceKeyFailed", new object[] { num })));
}
if (DebugTrace.Verbose)
{
DebugTrace.Trace(TraceLevel.Verbose, "Opened cluster resource key");
}
}
private static string IssueClusterResourceControlString(SafeHResource hResource, ClusterResourceControlCode code)
{
string str;
byte[] bytes = IssueClusterResourceControl(hResource, code);
try
{
str = Encoding.Unicode.GetString(bytes, 0, bytes.Length - 2);
}
catch (ArgumentException exception)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ConfigurationProviderException(Microsoft.Transactions.SR.GetString("ClusterResourceControlInvalidResults", new object[] { code }), exception));
}
return(str);
}
public static SafeHResource GetTransactionManagerClusterResource(string virtualServerName, string transactionManagerResourceType)
{
if (DebugTrace.Info)
{
DebugTrace.Trace(TraceLevel.Info, "Looking for cluster resource of type {0} dependent on network name {1}", transactionManagerResourceType, virtualServerName);
}
SafeHCluster hCluster = SafeNativeMethods.OpenCluster(null);
if (hCluster.IsInvalid)
{
int num = Marshal.GetLastWin32Error();
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ConfigurationProviderException(Microsoft.Transactions.SR.GetString("OpenClusterFailed", new object[] { num })));
}
using (hCluster)
{
SafeHClusEnum hEnum = SafeNativeMethods.ClusterOpenEnum(hCluster, ClusterEnum.Resource);
if (hEnum.IsInvalid)
{
int num2 = Marshal.GetLastWin32Error();
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ConfigurationProviderException(Microsoft.Transactions.SR.GetString("ClusterOpenEnumFailed", new object[] { num2 })));
}
using (hEnum)
{
uint index = 0;
while (true)
{
SafeHResource hResource = GetResourceFromEnumeration(hCluster, hEnum, index);
if (hResource == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ConfigurationProviderException(Microsoft.Transactions.SR.GetString("ClusterResourceNotFound", new object[] { virtualServerName })));
}
try
{
if (IsTransactionManager(hResource, virtualServerName, transactionManagerResourceType))
{
return(hResource);
}
}
catch
{
hResource.Dispose();
throw;
}
index++;
}
}
}
}
private static byte[] IssueClusterResourceControl(SafeHResource hResource, ClusterResourceControlCode code)
{
uint lpcbBytesReturned = 0;
uint num2 = SafeNativeMethods.ClusterResourceControl(hResource, IntPtr.Zero, code, IntPtr.Zero, 0, null, 0, ref lpcbBytesReturned);
switch (num2)
{
case 0:
case 0xea:
{
byte[] buffer = new byte[lpcbBytesReturned];
num2 = SafeNativeMethods.ClusterResourceControl(hResource, IntPtr.Zero, code, IntPtr.Zero, 0, buffer, lpcbBytesReturned, ref lpcbBytesReturned);
if (num2 == 0)
{
return(buffer);
}
break;
}
}
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ConfigurationProviderException(Microsoft.Transactions.SR.GetString("ClusterResourceControlFailed", new object[] { code, num2 })));
}
private static bool IsTransactionManager(SafeHResource hResource, string virtualServerName, string transactionManagerResourceType)
{
string resourceType = GetResourceType(hResource);
if (DebugTrace.Verbose)
{
DebugTrace.Trace(TraceLevel.Verbose, "Examining cluster resource of type {0}", resourceType);
}
if (string.Compare(resourceType, transactionManagerResourceType, StringComparison.OrdinalIgnoreCase) == 0)
{
string resourceNetworkName = GetResourceNetworkName(hResource);
if (DebugTrace.Verbose)
{
DebugTrace.Trace(TraceLevel.Verbose, "Dependent network name is {0}", resourceNetworkName);
}
if (string.Compare(resourceNetworkName, virtualServerName, StringComparison.OrdinalIgnoreCase) == 0)
{
return(true);
}
}
return(false);
}
private static SafeHResource GetResourceFromEnumeration(SafeHCluster hCluster, SafeHClusEnum hEnum, uint index)
{
uint num;
uint lpcchName = 0;
uint num3 = SafeNativeMethods.ClusterEnum(hEnum, index, out num, null, ref lpcchName);
switch (num3)
{
case 0x103:
return(null);
case 0:
case 0xea:
{
StringBuilder lpszName = new StringBuilder((int)(++lpcchName));
num3 = SafeNativeMethods.ClusterEnum(hEnum, index, out num, lpszName, ref lpcchName);
if (num3 == 0)
{
string str = lpszName.ToString();
if (DebugTrace.Verbose)
{
DebugTrace.Trace(TraceLevel.Verbose, "Opening cluster resource {0}", str);
}
SafeHResource resource = SafeNativeMethods.OpenClusterResource(hCluster, str);
if (resource.IsInvalid)
{
int num4 = Marshal.GetLastWin32Error();
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ConfigurationProviderException(Microsoft.Transactions.SR.GetString("OpenClusterResourceFailed", new object[] { num4 })));
}
return(resource);
}
break;
}
}
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ConfigurationProviderException(Microsoft.Transactions.SR.GetString("ClusterEnumFailed", new object[] { num3 })));
}
public static extern uint ClusterResourceControl([In] SafeHResource hResource, [In] IntPtr hHostNode, [In] ClusterResourceControlCode dwControlCode, [In] IntPtr lpInBuffer, [In] uint cbInBufferSize, [In, Out, MarshalAs(UnmanagedType.LPArray)] byte[] buffer, [In] uint cbOutBufferSize, [In, Out] ref uint lpcbBytesReturned);
private static string GetResourceType(SafeHResource hResource)
{
return(IssueClusterResourceControlString(hResource, ClusterResourceControlCode.GetResourceType));
}
private static string IssueClusterResourceControlString(SafeHResource hResource, ClusterResourceControlCode code)
{
string str;
byte[] bytes = IssueClusterResourceControl(hResource, code);
try
{
str = Encoding.Unicode.GetString(bytes, 0, bytes.Length - 2);
}
catch (ArgumentException exception)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ConfigurationProviderException(Microsoft.Transactions.SR.GetString("ClusterResourceControlInvalidResults", new object[] { code }), exception));
}
return str;
}
private static string GetResourceType(SafeHResource hResource)
{
return IssueClusterResourceControlString(hResource, ClusterResourceControlCode.GetResourceType);
}
private static bool IsTransactionManager(SafeHResource hResource, string virtualServerName, string transactionManagerResourceType)
{
string resourceType = GetResourceType(hResource);
if (DebugTrace.Verbose)
{
DebugTrace.Trace(TraceLevel.Verbose, "Examining cluster resource of type {0}", resourceType);
}
if (string.Compare(resourceType, transactionManagerResourceType, StringComparison.OrdinalIgnoreCase) == 0)
{
string resourceNetworkName = GetResourceNetworkName(hResource);
if (DebugTrace.Verbose)
{
DebugTrace.Trace(TraceLevel.Verbose, "Dependent network name is {0}", resourceNetworkName);
}
if (string.Compare(resourceNetworkName, virtualServerName, StringComparison.OrdinalIgnoreCase) == 0)
{
return true;
}
}
return false;
}
public static extern SafeHKey GetClusterResourceKey([In] SafeHResource hResource, [In] RegistryRights samDesired);
public static extern bool GetClusterResourceNetworkName([In] SafeHResource hResource, [Out] StringBuilder lpBuffer, [In, Out] ref uint nSize);
private static byte[] IssueClusterResourceControl(SafeHResource hResource, ClusterResourceControlCode code)
{
uint lpcbBytesReturned = 0;
uint num2 = SafeNativeMethods.ClusterResourceControl(hResource, IntPtr.Zero, code, IntPtr.Zero, 0, null, 0, ref lpcbBytesReturned);
switch (num2)
{
case 0:
case 0xea:
{
byte[] buffer = new byte[lpcbBytesReturned];
num2 = SafeNativeMethods.ClusterResourceControl(hResource, IntPtr.Zero, code, IntPtr.Zero, 0, buffer, lpcbBytesReturned, ref lpcbBytesReturned);
if (num2 == 0)
{
return buffer;
}
break;
}
}
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ConfigurationProviderException(Microsoft.Transactions.SR.GetString("ClusterResourceControlFailed", new object[] { code, num2 })));
}
