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(SQL Server) POP3 Verify Signed (S/MIME) EmailDemonstrates how to download and verify digitally signed S/MIME email. Note: This example requires Chilkat v11.0.0 or greater.
-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls. -- CREATE PROCEDURE ChilkatSample AS BEGIN DECLARE @hr int DECLARE @iTmp0 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 @mailman int EXEC @hr = sp_OACreate 'Chilkat.MailMan', @mailman OUT IF @hr <> 0 BEGIN PRINT 'Failed to create ActiveX component' RETURN END -- Set the POP3 server's hostname EXEC sp_OASetProperty @mailman, 'MailHost', 'pop.example.com' -- Set the POP3 login/password. EXEC sp_OASetProperty @mailman, 'PopUsername', 'myLogin' EXEC sp_OASetProperty @mailman, 'PopPassword', 'myPassword' DECLARE @stUidls int EXEC @hr = sp_OACreate 'Chilkat.StringTable', @stUidls OUT EXEC sp_OAMethod @mailman, 'FetchUidls', @success OUT, @stUidls IF @success = 0 BEGIN EXEC sp_OAGetProperty @mailman, 'LastErrorText', @sTmp0 OUT PRINT @sTmp0 EXEC @hr = sp_OADestroy @mailman EXEC @hr = sp_OADestroy @stUidls RETURN END DECLARE @email int EXEC @hr = sp_OACreate 'Chilkat.Email', @email OUT DECLARE @cert int EXEC @hr = sp_OACreate 'Chilkat.Cert', @cert OUT DECLARE @count int EXEC sp_OAGetProperty @stUidls, 'Count', @count OUT DECLARE @i int SELECT @i = 0 WHILE @i < @count BEGIN -- Download the full email. EXEC sp_OAMethod @stUidls, 'StringAt', @sTmp0 OUT, @i EXEC sp_OAMethod @mailman, 'FetchByUidl', @success OUT, @sTmp0, 0, 0, @email IF @success = 0 BEGIN EXEC sp_OAGetProperty @mailman, 'LastErrorText', @sTmp0 OUT PRINT @sTmp0 EXEC @hr = sp_OADestroy @mailman EXEC @hr = sp_OADestroy @stUidls EXEC @hr = sp_OADestroy @email EXEC @hr = sp_OADestroy @cert RETURN END PRINT @i EXEC sp_OAGetProperty @email, 'From', @sTmp0 OUT PRINT 'From: ' + @sTmp0 EXEC sp_OAGetProperty @email, 'Subject', @sTmp0 OUT PRINT 'Subject: ' + @sTmp0 -- The security layers of signed and/or encrypted emails -- are automatically "unwrapped" when loaded into -- a Chilkat email object. -- An application only needs to check to see if an email -- was received signed or encrypted, and then examine -- the success/failure. For example: EXEC sp_OAGetProperty @email, 'ReceivedSigned', @iTmp0 OUT IF @iTmp0 = 1 BEGIN PRINT 'This email was signed.' -- Check to see if the signatures were verified. EXEC sp_OAGetProperty @email, 'SignaturesValid', @iTmp0 OUT IF @iTmp0 = 1 BEGIN PRINT 'Digital signature(s) verified.' EXEC sp_OAGetProperty @email, 'SignedBy', @sTmp0 OUT PRINT 'Signer: ' + @sTmp0 EXEC sp_OAMethod @email, 'LastSignerCert', @success OUT, 0, @cert IF @success = 0 BEGIN EXEC sp_OAGetProperty @email, 'LastErrorText', @sTmp0 OUT PRINT @sTmp0 EXEC @hr = sp_OADestroy @mailman EXEC @hr = sp_OADestroy @stUidls EXEC @hr = sp_OADestroy @email EXEC @hr = sp_OADestroy @cert RETURN END EXEC sp_OAGetProperty @cert, 'SubjectCN', @sTmp0 OUT PRINT 'Signing cert: ' + @sTmp0 END END ELSE BEGIN PRINT 'Digital signature verification failed.' END SELECT @i = @i + 1 END EXEC sp_OAMethod @mailman, 'Pop3EndSession', @success OUT EXEC @hr = sp_OADestroy @mailman EXEC @hr = sp_OADestroy @stUidls EXEC @hr = sp_OADestroy @email EXEC @hr = sp_OADestroy @cert END GO |
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