SQL Server

FTP Download File to a Stream

Demonstrates how to FTP download a file to a Chilkat stream. 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 assumes the Chilkat FTP2 API to have been previously unlocked.
    -- See FTP2 Unlock Sample for sample code.

    DECLARE @ftp int
    EXEC @hr = sp_OACreate 'Chilkat.Ftp2', @ftp OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    EXEC sp_OASetProperty @ftp, 'Hostname', 'my-ftp-server.com'
    EXEC sp_OASetProperty @ftp, 'Port', 21
    EXEC sp_OASetProperty @ftp, 'Username', 'mFtpLogin'
    EXEC sp_OASetProperty @ftp, 'Password', 'myFtpPassword'
    EXEC sp_OASetProperty @ftp, 'AuthTls', 1
    EXEC sp_OASetProperty @ftp, 'Passive', 1

    -- Connect and login to the FTP server using TLS.
    EXEC sp_OAMethod @ftp, 'Connect', @success OUT
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @ftp, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @ftp
        RETURN
      END

    -- Move to the sub-directory (from the FTP user's home directory) where the file is located.
    EXEC sp_OAMethod @ftp, 'ChangeRemoteDir', @success OUT, 'temp'
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @ftp, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @ftp
        RETURN
      END

    -- Stream to this local file:
    DECLARE @streamObj int
    EXEC @hr = sp_OACreate 'Chilkat.Stream', @streamObj OUT

    EXEC sp_OASetProperty @streamObj, 'SinkFile', 'c:/temp/qa_output/penguins2.jpg'

    EXEC sp_OAMethod @ftp, 'GetFileToStream', @success OUT, 'penguins2.jpg', @streamObj
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @ftp, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @ftp
        EXEC @hr = sp_OADestroy @streamObj
        RETURN
      END

    EXEC sp_OAMethod @ftp, 'Disconnect', @success OUT


    PRINT 'Success.'

    EXEC @hr = sp_OADestroy @ftp
    EXEC @hr = sp_OADestroy @streamObj


END
GO