internal static extern CSecurityStatus AcquireCredentialsHandle(
string principleName,
string packageName,
CCredentialUse credentialUse,
IntPtr loginId,
IntPtr packageData,
IntPtr getKeyFunc,
IntPtr getKeyData,
ref CRawSspiHandle credentialHandle,
ref CTimeStamp expiry
);
private void Init(CCredentialUse use)
{
string packageName;
CTimeStamp rawExpiry = new CTimeStamp();
CSecurityStatus status = CSecurityStatus.InternalError;
// -- Package --
// Copy off for the call, since this.SecurityPackage is a property.
packageName = this.SecurityPackage;
this.Handle = new CSafeCredentialHandle();
// The finally clause is the actual constrained region. The VM pre-allocates any stack space,
// performs any allocations it needs to prepare methods for execution, and postpones any
// instances of the 'uncatchable' exceptions (ThreadAbort, StackOverflow, OutOfMemory).
RuntimeHelpers.PrepareConstrainedRegions();
try { }
finally
{
status = CCredentialNativeMethods.AcquireCredentialsHandle(
null,
packageName,
use,
IntPtr.Zero,
IntPtr.Zero,
IntPtr.Zero,
IntPtr.Zero,
ref this.Handle.rawHandle,
ref rawExpiry
);
}
if (status != CSecurityStatus.OK)
{
throw new CSSPIException("Failed to call AcquireCredentialHandle", status);
}
this.Expiry = rawExpiry.ToDateTime();
}
/// <summary>
/// Initializes a new instance of the CurrentCredential class.
/// </summary>
/// <param name="securityPackage">The security package to acquire the credential handle
/// from.</param>
/// <param name="use">The manner in which the credentials will be used - Inbound typically
/// represents servers, outbound typically represent clients.</param>
public CCurrentCredential(string securityPackage, CCredentialUse use) :
base(securityPackage)
{
Init(use);
}