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DRMGetServiceLocation function (msdrm.h)

  • Article

[The AD RMS SDK leveraging functionality exposed by

the client in Msdrm.dll is available for use in Windows Server 2008, Windows Vista, Windows Server 2008 R2, Windows 7, Windows Server 2012, and Windows 8. It may be altered or

unavailable in subsequent versions. Instead, use Active Directory Rights Management Services SDK 2.1,

which leverages functionality exposed by the client in Msipc.dll.]

The DRMGetServiceLocation function retrieves the URL of a server that can perform various rights management services, such as activation or license acquisition.

Syntax

DRMEXPORT HRESULT UDAPICALL DRMGetServiceLocation(
  [in, optional] DRMHSESSION hClient,
  [in]           UINT        uServiceType,
  [in]           UINT        uServiceLocation,
  [in]           PWSTR       wszIssuanceLicense,
  [in, out]      UINT        *puServiceURLLength,
  [out]          PWSTR       wszServiceURL
);

Parameters

[in, optional] hClient

A handle to a client session. The handle can be obtained by using the DRMCreateClientSession function. The handle is optional and can be NULL.

[in] uServiceType

Specifies the type of service desired. This can be one of the following values.

DRM_SERVICE_TYPE_ACTIVATION

Retrieve the computer activation service.

DRM_SERVICE_TYPE_CERTIFICATION

Retrieve the rights account certificate service.

DRM_SERVICE_TYPE_CLIENTLICENSOR

Retrieve the client licensor certificates service (for offline publishing).

DRM_SERVICE_TYPE_PUBLISHING

Retrieve the issuance license signing service (for online publishing).

DRM_SERVICE_TYPE_SILENT

Suppresses the appearance of any user-interface dialog boxes when the request is made to retrieve the service location.

[in] uServiceLocation

Specifies where to find the AD RMS server. This can be one of the following values.

DRM_SERVICE_LOCATION_ENTERPRISE

Look within the enterprise for an AD RMS server.

DRM_SERVICE_LOCATION_INTERNET

Look on the Internet for an AD RMS server.

[in] wszIssuanceLicense

A pointer to a null-terminated Unicode string that contains a signed issuance license. This parameter can be NULL. For more information, see Remarks.

[in, out] puServiceURLLength

A pointer to a UINT that, on input, contains the size, in characters, of the wszServiceURL buffer. This value includes the terminating null character.

After the function returns, this UINT contains the number of characters, including the terminating null character, that were copied to the wszServiceURL buffer.

If wszServiceURL is NULL, this UINT receives the number of characters, including the terminating null character, that are required for the server URL.

[out] wszServiceURL

A pointer to a Unicode string buffer that receives the URL of the server. The puServiceURLLength parameter contains the size, in characters, including the terminating null character, of this buffer.

If this parameter is NULL, puServiceURLLength receives the number of characters, including the terminating null character, that are required for the server URL.

Return value

If the function succeeds, the function returns S_OK.

If the function fails, it returns an HRESULT value that indicates the error. Possible values include, but are not limited to, those in the following list. For a list of common error codes, see Common HRESULT Values.

Remarks

Discovery of the service URL depends on the interaction between the uServiceType, uServiceLocation, and wszIssuanceLicense parameters in the following manner.

If you set the uServiceType parameter to DRM_SERVICE_TYPE_CERTIFICATION or to DRM_SERVICE_TYPE_ACTIVATION and:

  • You pass a signed issuance license to the wszIssuanceLicense parameter. The licensing URL is retrieved from the signed issuance license, a call is made to the licensing server to discover the certification URL that corresponds with the calling user, and the function returns the certification URL.
  • You set the wszIssuanceLicense parameter to NULL and the uServiceLocation parameter to DRM_SERVICE_LOCATION_INTERNET, the function returns an error code of E_DRM_USE_DEFAULT.
  • You set the wszIssuanceLicense parameter to NULL, and the uServiceLocation parameter to DRM_SERVICE_LOCATION_ENTERPRISE, the URL is retrieved from the registry or from Active Directory (AD).

If you set the uServiceType parameter to DRM_SERVICE_TYPE_PUBLISHING or to DRM_SERVICE_TYPE_CLIENTLICENSOR and:

  • You set the uServiceLocation parameter to DRM_SERVICE_LOCATION_INTERNET, the Passport service is supported to retrieve a service URL from the web.
  • You set the uServiceLocation parameter to DRM_SERVICE_LOCATION_ENTERPRISE and the wszIssuanceLicense parameter to NULL, the licensing service URL is retrieved from the registry and returned by the function call. Or, in the absence of a registry entry, the certification URL is retrieved from the service connection point in Active Directory (AD), a call is made to the certification server to discover the licensing service URL, and the function returns the licensing service URL.
  • You set the uServiceLocation parameter to DRM_SERVICE_LOCATION_ENTERPRISE and pass a signed issuance license to the wszIssuanceLicense parameter, the function attempts to retrieve the configured licensing URL from the registry. If this attempt fails, the licensing URL is retrieved from the signed issuance license and a call is made to the licensing server to discover the user's specific licensing URL.

For the preceding cases where the function searches the registry, you can force your application to find a specific URL by adding the appropriate registry key in the following list, along with the URL, as a string value called (default). Do not add the .asmx page to the URL.

Registry key Description
  • 32-bit application on a 32-bit computer
  • 64-bit application on a 64-bit computer
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSDRM\ServiceLocation\Activation
  • 32-bit application on a 64-bit computer
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\MSDRM\ServiceLocation\Activation 		For RMS v1.0, set this registry value to the URL of a computer activation service. To use this value for certification, set it to the certification virtual root of the enterprise.

Beginning with RMS v1.0 SP1, this value can only be used to discover a certification service. Therefore, set it to the URL of the rights account virtual root, http://ServerName/_wmcs/certification.
  • 32-bit application on a 32-bit computer
  • 64-bit application on a 64-bit computer
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSDRM\ServiceLocation\EnterprisePublishing
  • 32-bit application on a 64-bit computer
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\MSDRM\ServiceLocation\EnterprisePublishing 		Set this registry value to the URL of a service that signs issuance licenses within an enterprise network.
  • 32-bit application on a 32-bit computer
  • 64-bit application on a 64-bit computer
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSDRM\ServiceLocation\CloudPublishing
  • 32-bit application on a 64-bit computer
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\MSDRM\ServiceLocation\CloudPublishing 		Set this registry value to the URL of a service that signs issuance licenses over the Internet.
 

The application is responsible for allocating and freeing memory for the retrieved data. To find the buffer size required, call the function with NULL in the wszServiceURL parameter. The buffer size will be passed back to you through the puServiceURLLength parameter.

For a service discovery code example, see OnlineSigning_GetServiceURL.cpp. There is no service discovery for acquiring end-user licenses because this information can be stored in the issuance license used to acquire the end-user license.

Requirements

Requirement Value
Target Platform Windows
Header msdrm.h
Library Msdrm.lib
DLL Msdrm.dll

See also

AD RMS Functions

DRMActivate

OnlineSigning_GetServiceURL.cpp