SQL Server

PC/SC Find Inserted Smart Cards

See more SCard Examples

Get detailed information about each reader including whether or not a smart card is currently inserted in the reader. (Also includes USB tokens.)

Note: This functionality was introduced in Chilkat v9.5.0.87.

SQL Server

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @success int
    SELECT @success = 0

    -- This example requires the Chilkat API to have been previously unlocked.
    -- See Global Unlock Sample for sample code.

    DECLARE @scard int
    EXEC @hr = sp_OACreate 'Chilkat.SCard', @scard OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    -- First establish a context to the PC/SC Resource Manager
    EXEC sp_OAMethod @scard, 'EstablishContext', @success OUT, 'user'
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @scard, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @scard
        RETURN
      END

    -- Get JSON containing information about the smartcards currently inserted into readers.
    -- This also includes information about USB security tokens.
    DECLARE @json int
    EXEC @hr = sp_OACreate 'Chilkat.JsonObject', @json OUT

    EXEC sp_OAMethod @scard, 'FindSmartcards', @success OUT, @json
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @scard, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @scard
        EXEC @hr = sp_OADestroy @json
        RETURN
      END

    EXEC sp_OASetProperty @json, 'EmitCompact', 0
    EXEC sp_OAMethod @json, 'Emit', @sTmp0 OUT
    PRINT @sTmp0

    -- Here is sample output:
    -- See below for sample code to parse the JSON.

    -- You can see which readers have a card inserted by the "state".
    -- If the state contains "present", then a card is inserted into the reader.
    -- (USB tokens will typically always have a state containing "present")
    -- Also, the ATR of the card inserted into the reader is indicated by "atr".

    -- {
    --   "reader": [
    --     {
    --       "name": "Alcor Micro USB Smart Card Reader 0",
    --       "state": "present,inuse",
    --       "vendorName": "Alcor Micro",
    --       "systemName": "Alcor Micro USB Smart Card Reader 0",
    --       "card": {
    --         "atr": "3B7F96000080318065B0855956FB120FFE829000",
    --         "windows": {
    --           "miniDriver": "AxaltoCM.dll",
    --           "cryptoProvider": "Microsoft Base Smart Card Crypto Provider",
    --           "keyStorageProvider": "Microsoft Smart Card Key Storage Provider"
    --         }
    --       }
    --     },
    --     {
    --       "name": "FS USB Token 0",
    --       "state": "present,inuse",
    --       "vendorName": "FS",
    --       "serialNumber": "3F",
    --       "systemName": "FS USB Token 0",
    --       "card": {
    --         "atr": "3B9F958131FE9F006646530534002571DF000000000012",
    --         "windows": {
    --           "miniDriver": "eps2003csp11",
    --           "cryptoProvider": "Microsoft Base Smart Card Crypto Provider",
    --           "keyStorageProvider": "Microsoft Smart Card Key Storage Provider"
    --         }
    --       }
    --     },
    --     {
    --       "name": "FT Java Token 0",
    --       "state": "present",
    --       "vendorName": "FT",
    --       "serialNumber": "3F",
    --       "systemName": "FT Java Token 0",
    --       "card": {
    --         "atr": "3BFC180000813180459067464A00642D70C172FEE0FE",
    --         "windows": {
    --           "miniDriver": "tagliov70px.dll",
    --           "cryptoProvider": "Microsoft Base Smart Card Crypto Provider",
    --           "keyStorageProvider": "Microsoft Smart Card Key Storage Provider"
    --         }
    --       }
    --     },
    --     {
    --       "name": "SCM Microsystems Inc. SCR33x USB Smart Card Reader 0",
    --       "state": "present",
    --       "vendorName": "SCM Microsystems Inc.",
    --       "serialNumber": "333130303330",
    --       "systemName": "SCM Microsystems Inc. SCR33x USB Smart Card Reader 0",
    --       "card": {
    --         "atr": "3BFC180000813180459067464A00641606F2727E00E0",
    --         "windows": {
    --           "miniDriver": "tagliov70px.dll",
    --           "cryptoProvider": "Microsoft Base Smart Card Crypto Provider",
    --           "keyStorageProvider": "Microsoft Smart Card Key Storage Provider"
    --         }
    --       }
    --     },
    --     {
    --       "name": "Yubico YubiKey OTP+FIDO+CCID 0",
    --       "state": "present",
    --       "vendorName": "Yubico",
    --       "serialNumber": "3F",
    --       "systemName": "Yubico YubiKey OTP+FIDO+CCID 0",
    --       "card": {
    --         "atr": "3BFD1300008131FE158073C021C057597562694B657940",
    --         "windows": {
    --           "miniDriver": "msclmd.dll",
    --           "cryptoProvider": "Microsoft Base Smart Card Crypto Provider",
    --           "keyStorageProvider": "Microsoft Smart Card Key Storage Provider"
    --         }
    --       }
    --     }
    --   ]
    -- }

    -- Use this online tool to generate parsing code from sample JSON: 
    -- Generate Parsing Code from JSON

    DECLARE @name nvarchar(4000)

    DECLARE @state nvarchar(4000)

    DECLARE @vendorName nvarchar(4000)

    DECLARE @systemName nvarchar(4000)

    DECLARE @cardAtr nvarchar(4000)

    DECLARE @cardWindowsMiniDriver nvarchar(4000)

    DECLARE @cardWindowsCryptoProvider nvarchar(4000)

    DECLARE @cardWindowsKeyStorageProvider nvarchar(4000)

    DECLARE @serialNumber nvarchar(4000)

    DECLARE @i int
    SELECT @i = 0
    DECLARE @count_i int
    EXEC sp_OAMethod @json, 'SizeOfArray', @count_i OUT, 'reader'
    WHILE @i < @count_i
      BEGIN
        EXEC sp_OASetProperty @json, 'I', @i
        EXEC sp_OAMethod @json, 'StringOf', @name OUT, 'reader[i].name'
        EXEC sp_OAMethod @json, 'StringOf', @state OUT, 'reader[i].state'
        EXEC sp_OAMethod @json, 'StringOf', @vendorName OUT, 'reader[i].vendorName'
        EXEC sp_OAMethod @json, 'StringOf', @systemName OUT, 'reader[i].systemName'
        EXEC sp_OAMethod @json, 'StringOf', @cardAtr OUT, 'reader[i].card.atr'
        EXEC sp_OAMethod @json, 'StringOf', @cardWindowsMiniDriver OUT, 'reader[i].card.windows.miniDriver'
        EXEC sp_OAMethod @json, 'StringOf', @cardWindowsCryptoProvider OUT, 'reader[i].card.windows.cryptoProvider'
        EXEC sp_OAMethod @json, 'StringOf', @cardWindowsKeyStorageProvider OUT, 'reader[i].card.windows.keyStorageProvider'
        EXEC sp_OAMethod @json, 'StringOf', @serialNumber OUT, 'reader[i].serialNumber'
        SELECT @i = @i + 1
      END

    -- Applications should always release the context when finished.
    EXEC sp_OAMethod @scard, 'ReleaseContext', @success OUT
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @scard, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
      END

    EXEC @hr = sp_OADestroy @scard
    EXEC @hr = sp_OADestroy @json


END
GO