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WMRMLicenseStateData.Dates
The Dates property retrieves an array of start and/or expiration dates.
Syntax
SAFEARRAY = WMRMLicenseStateData.Dates
Parameters
This property takes no parameters.
Return Values
If the property succeeds, it returns a SAFEARRAY of Variants, indicating remaining dates in a license. If it fails, it returns a number in the error object.
Remarks
The number of dates in the array depends on the license state category. For example, the license might contain only an expiration date, or both a start date and an expiration date, or remaining play counts. For more information, see the Category property.
This property is read-only.
Example Code
' Declare variables.
Dim ChallengeObj ' WMRMChallenge object
Dim ChainCollObj ' WMRMUplinkCollection object
Dim ChainObj ' WMRMUplink object
Dim LeafLicenseStateObj ' WMRMLicenseStateData object
Dim RootLicenseStateObj ' WMRMLicenseStateData object
Dim HeaderObj ' WMRMHeader object
Dim ContentServerPubKey ' Public key of the content server
Dim Seed ' License key seed
Dim LicChain ' License chain flag
Dim strLicenseRequested ' License request string
Dim varClientInfo ' Client information
Dim varHeader ' Content header
Dim blnResult ' Signature verification
Dim SimpleLeafKID ' Key ID of a simple license or leaf license
Dim IndiVersion ' Security version of the DRM component
Dim RootKID ' Key ID of the root license
Dim RootCat ' License state data for root licenses
Dim RCountArray ' Count array
Dim RDateArray ' Date array
Dim RStreamID ' Stream ID
Dim RVague ' Vagueness
Dim IssueRoot ' Root license flag
Dim Rcounts ' Remaining counts
Dim RstartDate ' Start date
Dim RExpDate ' Expiration date
Dim LeafCat ' License state data for leaf licenses
Dim LCountArray ' Count array
Dim LDateArray ' Date array
Dim LStreamID ' Stream ID
Dim LVague ' Vagueness
Dim IssueLeaf ' Leaf license flag
Dim Lcounts ' Remaining counts
Dim LstartDate ' Start date
Dim LExpDate ' Expiration date
'"""""""""""""""""""""""""""""""""""""""""""""""""""""
' Set variables.
'"""""""""""""""""""""""""""""""""""""""""""""""""""""
ContentServerPubKey = Application("contentserverpubkey")
Seed = Application("seed")
LicChain = ""
'"""""""""""""""""""""""""""""""""""""""""""""""""""""
' Retrieve the license request. Get the client information and content header.
'"""""""""""""""""""""""""""""""""""""""""""""""""""""
Set ChallengeObj = Server.CreateObject("WMRMObjs.WMRMchallenge")
strLicenseRequested = Request.Form("challenge")
ChallengeObj.Challenge = strLicenseRequested
varClientInfo = ChallengeObj.ClientInfo
varHeader = ChallengeObj.Header
'"""""""""""""""""""""""""""""""""""""""""""""""""""""
' Put the content header into the header object. Retrieve
' the KID and required individualization version.
'"""""""""""""""""""""""""""""""""""""""""""""""""""""
Set HeaderObj = Server.CreateObject("WMRMObjs.WMRMheader")
HeaderObj.Header = varHeader
blnResult = HeaderObj.Verify(ContentServerPubKey)
SimpleLeafKID = HeaderObj.KeyID
IndiVersion = HeaderObj.IndividualizedVersion
' If IndividualizedVersion is not specified, an error
' might be set.
'"""""""""""""""""""""""""""""""""""""""""""""""""""""
' If this is a chained license, retrieve the root license KID.
'"""""""""""""""""""""""""""""""""""""""""""""""""""""
Set ChainCollObj = ChallengeObj.Uplinks
If (Err.Number = 0) Then ' Request for a license chain.
LicChain = "chain"
' Get license state data and key ID for the root license.
Set ChainObj = ChainCollObj.item(1)
RootKID = ChainObj.KID
' Get license state data to determine whether to issue
' a root license.
Set RootLicenseStateObj = ChainObj.LicenseState
RootCat = cstr(RootLicenseStateObj.Category)
Select Case RootCat
case 0 ' The root license has no rights.
IssueRoot = True
case 1 ' The root license has unlimited play counts.
IssueRoot = False
case 2 ' The root license has remaining play counts.
RCountArray = RootLicenseStateObj.Counts
RCounts = cstr(RCountArray(0))
IssueRoot = False
case 3 ' The root license has a start date.
RDateArray = RootLicenseStateObj.Dates
RStartDate = cstr(RDateArray(0))
IssueRoot = False
case 4 ' The root license has an expiration date.
RDateArray = RootLicenseStateObj.Dates
RExpDate = cstr(RDateArray(0))
IssueRoot = False
case 5 ' The root license has start and expiration dates.
RDateArray = RootLicenseStateObj.Dates
RStartDate = cstr(RDateArray(0))
RExpDate = cstr(RDateArray(1))
IssueRoot = False
case 6 ' The root license has a start date and
' remaining play counts.
RDateArray = RootLicenseStateObj.Dates
RStartDate = cstr(RDateArray(0))
RCountArray = RootLicenseStateObj.Counts
RCounts = cstr(RCountArray(0))
IssueRoot = False
case 7 ' The root license has an expiration date and
' remaining play counts.
RDateArray = RootLicenseStateObj.Dates
RExpDate = cstr(RDateArray(0))
RCountArray = RootLicenseStateObj.Counts
RCounts = cstr(RCountArray(0))
IssueRoot = False
case 8 ' The root license has start and expiration
' dates, and remaining play counts.
RDateArray = RootLicenseStateObj.Dates
RStartDate = cstr(RDateArray(0))
RExpDate = cstr(RDateArray(1))
RCountArray = RootLicenseStateObj.Counts
RCounts = cstr(RCountArray(0))
IssueRoot = False
case 9 ' The root license expires after first use.
IssueRoot = False
End Select
RStreamID = RootLicenseStateObj.StreamID ' This value is always 0.
RVague = RootLicenseStateObj.Vagueness
' Get license state data to determine whether to issue
' a leaf license.
Set ChainObj = ChainCollObj.item(0)
Set LeafLicenseStateObj = ChainObj.LicenseState
LeafCat = cstr(LeafLicenseStateObj.Category)
Select Case LeafCat
case 0 ' The leaf license has no rights.
IssueLeaf = True
case 1 ' The leaf license has unlimited play counts.
IssueLeaf = False
case 2 ' The leaf license has remaining play counts.
LCountArray = LeafLicenseStateObj.Counts
LCounts = cstr(LCountArray(0))
IssueLeaf = False
case 3 ' The leaf license has a start date.
LDateArray = LeafLicenseStateObj.Dates
LStartDate = cstr(LDateArray(0))
IssueLeaf = False
case 4 ' The leaf license has an expiration date.
LDateArray = LeafLicenseStateObj.Dates
LExpDate = cstr(LDateArray(0))
IssueLeaf = False
case 5 ' The leaf license has start and expiration dates.
LDateArray = LeafLicenseStateObj.Dates
LStartDate = cstr(LDateArray(0))
LExpDate = cstr(LDateArray(1))
IssueLeaf = False
case 6 ' The leaf license has a start date and
' remaining play counts.
LDateArray = LeafLicenseStateObj.Dates
LStartDate = cstr(LDateArray(0))
LCountArray = LeafLicenseStateObj.Counts
LCounts = cstr(LCountArray(0))
IssueLeaf = False
case 7 ' The leaf license has an expiration date and
' remaining play counts.
LDateArray = LeafLicenseStateObj.Dates
LExpDate = cstr(LDateArray(0))
LCountArray = LeafLicenseStateObj.Counts
LCounts = cstr(LCountArray(0))
IssueLeaf = False
case 8 ' The leaf license has start and expiration
' dates, and remaining play counts.
LDateArray = LeafLicenseStateObj.Dates
LStartDate = cstr(LDateArray(0))
LExpDate = cstr(LDateArray(1))
LCountArray = LeafLicenseStateObj.Counts
LCounts = cstr(LCountArray(0))
IssueLeaf = False
case 9 ' The root license expires after first use.
IssueLeaf = False
End Select
LStreamID = LeafLicenseStateObj.StreamID ' This value is always 0.
LVague = LeafLicenseStateObj.Vagueness
Else ' An error indicates a request for a simple license.
err.clear
LicChain = "simple"
End If
' Continue generating the license.
Requirements
Version: Windows Media Rights Manager 10 SDK
Reference: wmrmobjs 1.0 Type Library
Library: wmrmobjs.dll
Platform: Windows Server 2003
See Also