SQL Server

SCP Download Text File to String Variable

See more SCP Examples

Downloads a file using the SCP protocol (Secure Copy Protocol over SSH), from a specific remote directory located on the SSH server directly into a string variable. 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
    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 @ssh int
    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:
    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
    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

    -- This downloads a file from the "repositor/xml/" subdirectory (relative to the SSH user account's HOME directory).  
    DECLARE @remotePath nvarchar(4000)
    SELECT @remotePath = 'repository/xml/hamlet.xml'

    -- The byte representation of the remote text file (i.e. the charset) must be
    -- indicated to allow the receiving software to correctly interpret the incoming
    -- bytes as the correct chars.
    -- See https://www.chilkatsoft.com/p/p_463.asp for a list of valid charset names.
    DECLARE @charset nvarchar(4000)
    SELECT @charset = 'utf-8'

    DECLARE @fileContents nvarchar(4000)
    EXEC sp_OAMethod @scp, 'DownloadString', @fileContents OUT, @remotePath, @charset
    EXEC sp_OAGetProperty @scp, 'LastMethodSuccess', @iTmp0 OUT
    IF @iTmp0 <> 1
      BEGIN
        EXEC sp_OAGetProperty @scp, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @ssh
        EXEC @hr = sp_OADestroy @scp
        RETURN
      END


    PRINT 'Received file:'

    PRINT @fileContents


    PRINT 'SCP download string success.'

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

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


END
GO