internal static bool IsMachineDC(string computerName)
{
int num;
bool flag;
bool machineRole;
IntPtr zero = IntPtr.Zero;
try
{
if (computerName != null)
{
num = UnsafeNativeMethods.DsRoleGetPrimaryDomainInformation(computerName, UnsafeNativeMethods.DSROLE_PRIMARY_DOMAIN_INFO_LEVEL.DsRolePrimaryDomainInfoBasic, out zero);
}
else
{
num = UnsafeNativeMethods.DsRoleGetPrimaryDomainInformation(IntPtr.Zero, UnsafeNativeMethods.DSROLE_PRIMARY_DOMAIN_INFO_LEVEL.DsRolePrimaryDomainInfoBasic, out zero);
}
if (num == 0)
{
UnsafeNativeMethods.DSROLE_PRIMARY_DOMAIN_INFO_BASIC structure = (UnsafeNativeMethods.DSROLE_PRIMARY_DOMAIN_INFO_BASIC)Marshal.PtrToStructure(zero, typeof(UnsafeNativeMethods.DSROLE_PRIMARY_DOMAIN_INFO_BASIC));
if (structure.MachineRole == UnsafeNativeMethods.DSROLE_MACHINE_ROLE.DsRole_RoleBackupDomainController)
{
machineRole = true;
}
else
{
machineRole = structure.MachineRole == UnsafeNativeMethods.DSROLE_MACHINE_ROLE.DsRole_RolePrimaryDomainController;
}
flag = machineRole;
}
else
{
object[] objArray = new object[1];
objArray[0] = num;
throw new PrincipalOperationException(string.Format(CultureInfo.CurrentCulture, StringResources.UnableToRetrieveDomainInfo, objArray));
}
}
finally
{
if (zero != IntPtr.Zero)
{
UnsafeNativeMethods.DsRoleFreeMemory(zero);
}
}
return(flag);
}
internal static bool IsMachineDC(String computerName)
{
IntPtr dsRoleInfoPtr = IntPtr.Zero;
int err = -1;
try
{
if (null == computerName)
{
err = UnsafeNativeMethods.DsRoleGetPrimaryDomainInformation(IntPtr.Zero, UnsafeNativeMethods.DSROLE_PRIMARY_DOMAIN_INFO_LEVEL.DsRolePrimaryDomainInfoBasic, out dsRoleInfoPtr);
}
else
{
err = UnsafeNativeMethods.DsRoleGetPrimaryDomainInformation(computerName, UnsafeNativeMethods.DSROLE_PRIMARY_DOMAIN_INFO_LEVEL.DsRolePrimaryDomainInfoBasic, out dsRoleInfoPtr);
}
if (err != 0)
{
GlobalDebug.WriteLineIf(GlobalDebug.Error, "Utils", "IsMachineDC: DsRoleGetPrimaryDomainInformation failed, err=" + err);
throw new PrincipalOperationException(
String.Format(
CultureInfo.CurrentCulture,
StringResources.UnableToRetrieveDomainInfo,
err));
}
UnsafeNativeMethods.DSROLE_PRIMARY_DOMAIN_INFO_BASIC dsRolePrimaryDomainInfo =
(UnsafeNativeMethods.DSROLE_PRIMARY_DOMAIN_INFO_BASIC)Marshal.PtrToStructure(dsRoleInfoPtr, typeof(UnsafeNativeMethods.DSROLE_PRIMARY_DOMAIN_INFO_BASIC));
return(dsRolePrimaryDomainInfo.MachineRole == UnsafeNativeMethods.DSROLE_MACHINE_ROLE.DsRole_RoleBackupDomainController ||
dsRolePrimaryDomainInfo.MachineRole == UnsafeNativeMethods.DSROLE_MACHINE_ROLE.DsRole_RolePrimaryDomainController);
}
finally
{
if (dsRoleInfoPtr != IntPtr.Zero)
{
UnsafeNativeMethods.DsRoleFreeMemory(dsRoleInfoPtr);
}
}
}