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(SQL Server) SSH to Cisco Switch - Processing "More" Responses

Demonstrates connecting to a Cisco switch, running a command to enable privileged mode, then running a command to get a paged response requiring the SPACE char to be sent to process "--More--".

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
    DECLARE @iTmp0 int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    -- This example assumes 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

    DECLARE @success int
    EXEC sp_OAMethod @ssh, 'Connect', @success OUT, 'SSH_SERVER_DOMAIN_OR_IP_ADDRESS', 22
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @ssh, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @ssh
        RETURN
      END

    -- 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

    -- Start a shell session.
    DECLARE @channelNum int
    EXEC sp_OAMethod @ssh, 'QuickShell', @channelNum OUT
    IF @channelNum < 0
      BEGIN
        EXEC sp_OAGetProperty @ssh, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @ssh
        RETURN
      END

    -- If the CISCO switch returns a prompt with ">", then read until we get the prompt.
    -- (It's not actually required that we do this, but it helps to know that all is OK at this point..)
    EXEC sp_OAMethod @ssh, 'ChannelReceiveUntilMatch', @success OUT, @channelNum, '>', 'utf-8', 1
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @ssh, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @ssh
        RETURN
      END

    -- Show what we received so far:
    EXEC sp_OAMethod @ssh, 'GetReceivedText', @sTmp0 OUT, @channelNum, 'utf-8'
    PRINT @sTmp0

    -- Send the "ena" command to enable privileged mode.
    -- (For the Cisco switch, terminate command with a single CR char.)
    EXEC sp_OAMethod @ssh, 'ChannelSendString', @success OUT, @channelNum, 'ena' + CHAR(13), 'utf-8'
    -- Assume success for this example to make it shorter..

    -- Read to the "Password:" prompt.
    EXEC sp_OAMethod @ssh, 'ChannelReceiveUntilMatch', @success OUT, @channelNum, 'Password:', 'utf-8', 1
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @ssh, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @ssh
        RETURN
      END

    -- Show what we received...
    EXEC sp_OAMethod @ssh, 'GetReceivedText', @sTmp0 OUT, @channelNum, 'utf-8'
    PRINT @sTmp0

    -- Send the password.
    EXEC sp_OAMethod @ssh, 'ChannelSendString', @success OUT, @channelNum, 'MY_PASSWORD_FOR_ELEVATED_PRIVILEGE' + CHAR(13), 'utf-8'

    -- The prompt now changes from "Something>" to "Something#>
    -- Read until the new prompt..
    EXEC sp_OAMethod @ssh, 'ChannelReceiveUntilMatch', @success OUT, @channelNum, '#', 'utf-8', 1
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @ssh, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @ssh
        RETURN
      END

    -- Show what we received...
    EXEC sp_OAMethod @ssh, 'GetReceivedText', @sTmp0 OUT, @channelNum, 'utf-8'
    PRINT @sTmp0

    -- Send the "show running-config" command.
    -- The response will be in multiple pages, each ending with "--More--" and requiring a SPACE bar to be sent
    -- to get the next page.
    EXEC sp_OAMethod @ssh, 'ChannelSendString', @success OUT, @channelNum, 'show running-config' + CHAR(13), 'utf-8'

    -- Consume the response until we end with another prompt.
    DECLARE @saMatch int
    -- Use "Chilkat_9_5_0.StringArray" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.StringArray', @saMatch OUT

    -- Change "YOUR_PROMPT" to your actual prompt.  We don't want to check for only "#" because
    -- it's not specific enough.  The data in the response could contain the "#" char...
    EXEC sp_OAMethod @saMatch, 'Append', @success OUT, 'YOUR_PROMPT#'
    EXEC sp_OAMethod @saMatch, 'Append', @success OUT, '--More--'

    DECLARE @sbReceived int
    -- Use "Chilkat_9_5_0.StringBuilder" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sbReceived OUT

    DECLARE @moreComing int
    SELECT @moreComing = 1
    WHILE (@moreComing = 1)
      BEGIN

        EXEC sp_OAMethod @ssh, 'ChannelReceiveUntilMatchN', @success OUT, @channelNum, @saMatch, 'utf-8', 1
        IF @success <> 1
          BEGIN
            EXEC sp_OAGetProperty @ssh, 'LastErrorText', @sTmp0 OUT
            PRINT @sTmp0
            EXEC @hr = sp_OADestroy @ssh
            EXEC @hr = sp_OADestroy @saMatch
            EXEC @hr = sp_OADestroy @sbReceived
            RETURN
          END

        SELECT @moreComing = 0

        EXEC sp_OAMethod @sbReceived, 'Clear', NULL
        EXEC sp_OAMethod @ssh, 'GetReceivedText', @sTmp0 OUT, @channelNum, 'utf-8'
        EXEC sp_OAMethod @sbReceived, 'Append', @success OUT, @sTmp0

        EXEC sp_OAMethod @sbReceived, 'GetAsString', @sTmp0 OUT
        PRINT @sTmp0

        EXEC sp_OAMethod @sbReceived, 'Contains', @iTmp0 OUT, '--More--', 1
        IF @iTmp0 = 1
          BEGIN
            SELECT @moreComing = 1

            -- Send a SPACE char just as if we were interactively pressing the SPACE key to get more output.
            EXEC sp_OAMethod @ssh, 'ChannelSendString', @success OUT, @channelNum, ' ', 'utf-8'
          END

      END

    EXEC sp_OAMethod @ssh, 'Disconnect', NULL

    EXEC @hr = sp_OADestroy @ssh
    EXEC @hr = sp_OADestroy @saMatch
    EXEC @hr = sp_OADestroy @sbReceived


END
GO

 

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