(SQL Server) Verify a Zip's Password

Demonstrates how to verify the password for an encrypted or password-protected zip archive.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

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

    DECLARE @zip int
    -- Use "Chilkat_9_5_0.Zip" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.Zip', @zip OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    -- To verify a password for a Zip, the Zip must be opened:
    DECLARE @success int
    EXEC sp_OAMethod @zip, 'OpenZip', @success OUT, 'myProtected.zip'
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @zip, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @zip
        RETURN
      END

    -- Set the password to be verified:
    EXEC sp_OASetProperty @zip, 'DecryptPassword', 'secret'

    DECLARE @passwordOk int

    EXEC sp_OAMethod @zip, 'VerifyPassword', @passwordOk OUT
    IF @passwordOk = 1
      BEGIN

        PRINT 'Password is correct.'
      END
    ELSE
      BEGIN

        PRINT 'Password is incorrect.'
      END

    EXEC sp_OAMethod @zip, 'CloseZip', NULL

    EXEC @hr = sp_OADestroy @zip


END
GO