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(SQL Server) SSH Quick/Simple Shell Session

Demonstrates the simplified way to run multiple commands in a shell session on an SSH server.

Note: This example requires Chilkat v9.5.0.65 or greater.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @sTmp0 nvarchar(4000)
    --  This example assumes Chilkat SSH/SFTP to have been previously unlocked.
    --  See Unlock SSH for sample code.

    DECLARE @ssh int
    EXEC @hr = sp_OACreate 'Chilkat_9_5_0.Ssh', @ssh OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    DECLARE @port int
    SELECT @port = 22
    DECLARE @success int
    EXEC sp_OAMethod @ssh, 'Connect', @success OUT, 'the-ssh-server.com', @port
    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, 'theSshLogin', 'theSshPassword'
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @ssh, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @ssh
        RETURN
      END

    --  Start a shell session.
    --  (The QuickShell method was added in Chilkat v9.5.0.65)
    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

    --  Construct a StringBuilder with multiple commands, one per line.
    --  Note: The line-endings are potentially important.  Some SSH servers may
    --  require either LF or CRLF line endings.  (Unix/Linux/OSX servers typically
    --  use bare-LF line endings.  Windows servers likely use CRLF line endings.)
    DECLARE @sbCommands int
    EXEC @hr = sp_OACreate 'Chilkat_9_5_0.StringBuilder', @sbCommands OUT

    EXEC sp_OAMethod @sbCommands, 'Append', @success OUT, 'echo hello world' + CHAR(10)
    EXEC sp_OAMethod @sbCommands, 'Append', @success OUT, 'date' + CHAR(10)
    EXEC sp_OAMethod @sbCommands, 'Append', @success OUT, 'df' + CHAR(10)

    --  For our last command, we're going to echo a marker string that
    --  we'll use in ChannelReceiveUntilMatch below.
    --  The use of single quotes around 'IS' is a trick so that the output
    --  of the command is "THIS IS THE END OF THE SCRIPT", but the terminal echo
    --  includes the single quotes.  This allows us to read until we see the actual
    --  output of the last command.
    EXEC sp_OAMethod @sbCommands, 'Append', @success OUT, 'echo THIS ''IS'' THE END OF THE SCRIPT' + CHAR(10)

    --  Send the commands..
    EXEC sp_OAMethod @sbCommands, 'GetAsString', @sTmp0 OUT
    EXEC sp_OAMethod @ssh, 'ChannelSendString', @success OUT, @channelNum, @sTmp0, 'ansi'
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @ssh, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @ssh
        EXEC @hr = sp_OADestroy @sbCommands
        RETURN
      END

    --  Send an EOF to indicate no more commands will be sent.
    --  For brevity, we're not checking the return values of each method call.
    --  Your code should check the success/failure of each call.
    EXEC sp_OAMethod @ssh, 'ChannelSendEof', @success OUT, @channelNum

    --  Receive output up to our marker.
    EXEC sp_OAMethod @ssh, 'ChannelReceiveUntilMatch', @success OUT, @channelNum, 'THIS IS THE END OF THE SCRIPT', 'ansi', 1

    --  Close the channel.
    --  It is important to close the channel only after receiving the desired output.
    EXEC sp_OAMethod @ssh, 'ChannelSendClose', @success OUT, @channelNum

    --  Get any remaining output..
    EXEC sp_OAMethod @ssh, 'ChannelReceiveToClose', @success OUT, @channelNum

    --  Get the complete output for all the commands in the session.

    PRINT '--- output ----'
    EXEC sp_OAMethod @ssh, 'GetReceivedText', @sTmp0 OUT, @channelNum, 'ansi'
    PRINT @sTmp0

    --  Here's our actual sample output:

    -- 	Last login: Thu Dec 22 20:19:09 2016 from chilkat13
    -- 
    -- 	echo hello world
    -- 	date
    -- 	df
    -- 	echo THIS 'IS' THE END OF THE SCRIPT
    -- 	chilkatosx:~ chilkat$ echo hello world
    -- 	hello world
    -- 	chilkatosx:~ chilkat$ date
    -- 	Thu Dec 22 20:30:48 CST 2016
    -- 	chilkatosx:~ chilkat$ df
    -- 	Filesystem    512-blocks      Used  Available Capacity  iused     ifree %iused  Mounted on
    -- 	/dev/disk2    2176716032 265768928 1910435104    13% 33285114 238804388   12%   /
    -- 	devfs                383       383          0   100%      664         0  100%   /dev
    -- 	map -hosts             0         0          0   100%        0         0  100%   /net
    -- 	map auto_home          0         0          0   100%        0         0  100%   /home
    -- 	/dev/disk3s2      374668    374668          0   100%    93665         0  100%   /Volumes/Google Chrome
    -- 	chilkatosx:~ chilkat$ echo THIS 'IS' THE END OF THE SCRIPT
    -- 	THIS IS THE END OF THE SCRIPT
    -- 	chilkatosx:~ chilkat$

    EXEC @hr = sp_OADestroy @ssh
    EXEC @hr = sp_OADestroy @sbCommands


END
GO

 

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