(SQL Server) SCP Download File

Demonstrates how to download a file using the SCP protocol (Secure Copy Protocol over SSH).

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

    -- Hostname may be an IP address or hostname:
    DECLARE @hostname nvarchar(4000)
    SELECT @hostname = 'www.some-ssh-server.com'
    DECLARE @port int
    SELECT @port = 22

    -- Connect to an SSH server:
    DECLARE @success int
    EXEC sp_OAMethod @ssh, 'Connect', @success OUT, @hostname, @port
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @ssh, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @ssh
        RETURN
      END

    -- Wait a max of 5 seconds when reading responses..
    EXEC sp_OASetProperty @ssh, 'IdleTimeoutMs', 5000

    -- Authenticate using login/password:
    EXEC sp_OAMethod @ssh, 'AuthenticatePw', @success OUT, 'myLogin', 'myPassword'
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @ssh, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @ssh
        RETURN
      END

    -- Once the SSH object is connected and authenticated, we use it
    -- in our SCP object.
    DECLARE @scp int
    -- Use "Chilkat_9_5_0.Scp" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.Scp', @scp OUT

    EXEC sp_OAMethod @scp, 'UseSsh', @success OUT, @ssh
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @scp, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @ssh
        EXEC @hr = sp_OADestroy @scp
        RETURN
      END

    DECLARE @remotePath nvarchar(4000)
    SELECT @remotePath = 'test.txt'
    DECLARE @localPath nvarchar(4000)
    SELECT @localPath = '/home/bob/test.txt'
    EXEC sp_OAMethod @scp, 'DownloadFile', @success OUT, @remotePath, @localPath
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @scp, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @ssh
        EXEC @hr = sp_OADestroy @scp
        RETURN
      END


    PRINT 'SCP download file success.'

    -- Disconnect
    EXEC sp_OAMethod @ssh, 'Disconnect', NULL

    EXEC @hr = sp_OADestroy @ssh
    EXEC @hr = sp_OADestroy @scp


END
GO