internal static int DRMCreateBoundLicense(
SafeRightsManagementEnvironmentHandle environmentHandle,
BoundLicenseParams boundLicenseParams,
string licenseChain,
out SafeRightsManagementHandle boundLicenseHandle,
out uint errorLogHandle)
{
SecurityHelper.DemandRightsManagementPermission();
int res = UnsafeNativeMethods.DRMCreateBoundLicense(
environmentHandle,
boundLicenseParams,
licenseChain,
out boundLicenseHandle,
out errorLogHandle);
// on some platforms in the failure cases the out parameter is being created with the value 0
// in order to simplify error handling and Disposing of those handles we will just close them as
// soon as we detect such case
if ((boundLicenseHandle != null) && boundLicenseHandle.IsInvalid)
{
boundLicenseHandle.Dispose();
boundLicenseHandle = null;
}
return(res);
}
internal static extern int DRMCreateBoundLicense(
[In] SafeRightsManagementEnvironmentHandle environmentHandle,
[In, MarshalAs(UnmanagedType.LPStruct)] BoundLicenseParams boundLicenseParams,
[In, MarshalAs(UnmanagedType.LPWStr)] string licenseChain,
[Out] out SafeRightsManagementHandle boundLicenseHandle,
[Out, MarshalAs(UnmanagedType.U4)] out uint errorLogHandle);
// This function attempts to bind License to a given Identity
// It will try to bind all rights One-by-one in order to eliminate
// grants that may have been expired, so it will only bind The ones that are still valid
private CryptoProvider BindUseLicense(string serializedUseLicense,
List<RightNameExpirationInfoPair> unboundRightsList,
BoundLicenseParams boundLicenseParams,
out int theFirstHrFailureCode)
{
Debug.Assert(serializedUseLicense != null);
Debug.Assert(unboundRightsList != null);
Debug.Assert(boundLicenseParams != null);
List<SafeRightsManagementHandle> successfullyBoundLicenseHandleList =
new List<SafeRightsManagementHandle>(unboundRightsList.Count);
List<RightNameExpirationInfoPair> successfullyBoundRightsList =
new List<RightNameExpirationInfoPair>(unboundRightsList.Count);
try
{
uint errorLogHandle;
// we neeed to return the first failure code, that is the one that will communicate to the user
int hr;
theFirstHrFailureCode = 0;
SafeRightsManagementHandle boundLicenseHandle;
// first we are enumerating all rights one-by-one and preserving the ones that can be bound
// we are going through the list of "recognised rights"
foreach (RightNameExpirationInfoPair rightInfo in unboundRightsList)
{
boundLicenseParams.wszRightsRequested = rightInfo.RightName;
boundLicenseHandle = null;
errorLogHandle = 0;
hr = SafeNativeMethods.DRMCreateBoundLicense(
_envHandle,
boundLicenseParams,
serializedUseLicense,
out boundLicenseHandle,
out errorLogHandle);
if (boundLicenseHandle != null && (hr == 0))
{
// we got a successful bound let's copy the whole grant
// the only thing that we need to substitute in the grant is the User identity
// along with the original right name (prior to binding), as unmanaged SDK
// messes up right names and their expiration
// in case of multiple expiration dates and additional rights granted to an owner
successfullyBoundLicenseHandleList.Add(boundLicenseHandle);
successfullyBoundRightsList.Add(rightInfo);
}
// preserve the first encountered error code
if ((theFirstHrFailureCode == 0) && (hr != 0))
{
theFirstHrFailureCode = hr;
}
}
// At this point we have a list of potential "Right" -candidates
// if it is empty we can get out
if (successfullyBoundLicenseHandleList.Count > 0)
{
ContentUser user = ExtractUserFromCertificateChain(boundLicenseParams.wszDefaultEnablingPrincipalCredentials);
CryptoProvider cryptoProvider = new CryptoProvider(successfullyBoundLicenseHandleList,
successfullyBoundRightsList,
user);
CryptoProviderList.Add(cryptoProvider);
return cryptoProvider;
}
else
{
return null;
}
}
catch
{
// In case of a failure we should clean up handle that have been accumulated
// otherwise the list of handles is either empty or given to the CryptoProvider
// to be taken care of
foreach (SafeRightsManagementHandle handle in successfullyBoundLicenseHandleList)
{
handle.Dispose();
}
throw;
}
}
internal CryptoProvider TryBindUseLicenseToAllIdentites(string serializedUseLicense)
{
CheckDisposed();
Invariant.Assert(serializedUseLicense != null);
int hr = 0;
int theFirstHrFailureCode = 0;
///////////////////////////
// prepare bound license param structure
///////////////////////////
//prepare for binding (enumerate unbound rights)
string rightsGroupName;
List<RightNameExpirationInfoPair> unboundRightsList =
GetRightsInfoFromUseLicense(serializedUseLicense, out rightsGroupName);
BoundLicenseParams boundLicenseParams = new BoundLicenseParams();
boundLicenseParams.uVersion = 0;
boundLicenseParams.hEnablingPrincipal = 0;
boundLicenseParams.hSecureStore = 0;
boundLicenseParams.wszRightsGroup = rightsGroupName;
string contentId;
string contentIdType;
GetContentIdFromLicense(serializedUseLicense, out contentId, out contentIdType);
boundLicenseParams.DRMIDuVersion = 0;
boundLicenseParams.DRMIDIdType = contentIdType;
boundLicenseParams.DRMIDId = contentId;
boundLicenseParams.cAuthenticatorCount = 0;//reserved.should be 0.
boundLicenseParams.rghAuthenticators = IntPtr.Zero;
string userCertificate = GetGroupIdentityCert();
boundLicenseParams.wszDefaultEnablingPrincipalCredentials = userCertificate;
boundLicenseParams.dwFlags = 0;
// let's try to bind this using currently provided user first
CryptoProvider cryptoProvider = BindUseLicense(serializedUseLicense,
unboundRightsList,
boundLicenseParams,
out hr);
if (cryptoProvider != null)
{
return cryptoProvider;
}
// preserve the first encountered error code
if ((theFirstHrFailureCode == 0) && (hr != 0))
{
theFirstHrFailureCode = hr;
}
// now if the current user failed we can try to enumerate all the userr certificates
// and go through them one-by-one
int userCertIndex = 0;
while (true)
{
userCertificate = EnumerateLicense(EnumerateLicenseFlags.GroupIdentity, userCertIndex);
if (userCertificate == null)
{
// we have to enumerate all of the user certs . . .
break;
}
userCertIndex++;
boundLicenseParams.wszDefaultEnablingPrincipalCredentials = userCertificate;
cryptoProvider = BindUseLicense(serializedUseLicense,
unboundRightsList,
boundLicenseParams,
out hr);
if (cryptoProvider != null)
{
return cryptoProvider;
}
// preserve the first encountered error code
if ((theFirstHrFailureCode == 0) && (hr != 0))
{
theFirstHrFailureCode = hr;
}
}
// at this point we can only translate failure into some meaningfull exception
Invariant.Assert(theFirstHrFailureCode != 0); // it must contain an error as a succesfull return above should take of non-failure cases
Errors.ThrowOnErrorCode(theFirstHrFailureCode);
return null;
}
internal static int DRMCreateBoundLicense(
SafeRightsManagementEnvironmentHandle environmentHandle,
BoundLicenseParams boundLicenseParams,
string licenseChain,
out SafeRightsManagementHandle boundLicenseHandle,
out uint errorLogHandle)
{
SecurityHelper.DemandRightsManagementPermission();
int res = UnsafeNativeMethods.DRMCreateBoundLicense(
environmentHandle,
boundLicenseParams,
licenseChain,
out boundLicenseHandle,
out errorLogHandle);
// on some platforms in the failure cases the out parameter is being created with the value 0
// in order to simplify error handling and Disposing of those handles we will just close them as
// soon as we detect such case
if ((boundLicenseHandle != null) && boundLicenseHandle.IsInvalid)
{
boundLicenseHandle.Dispose();
boundLicenseHandle = null;
}
return res;
}