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(PowerBuilder) Multiple Hop SSH to SFTP

Demonstrates how to SFTP through an intermediate SSH server (multiple hop). The scheme looks like this:

Application => ServerSSH1 => ServerSFtp

The ConnectThroughSsh method is added in Chilkat version 9.5.0.55 to accomplish this task.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

integer li_rc
oleobject loo_Ssh1
string ls_Hostname
string ls_Port
integer li_Success
oleobject loo_Sftp
string ls_RemoteFilePath
string ls_LocalFilePath

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

loo_Ssh1 = create oleobject
li_rc = loo_Ssh1.ConnectToNewObject("Chilkat_9_5_0.Ssh")
if li_rc < 0 then
    destroy loo_Ssh1
    MessageBox("Error","Connecting to COM object failed")
    return
end if

// Hostname may be an IP address or domain name:
ls_Hostname = "192.168.1.111"
ls_Port = 22

// Connect directly to the 1st SSH server:
li_Success = loo_Ssh1.Connect(ls_Hostname,ls_Port)
if li_Success <> 1 then
    Write-Debug loo_Ssh1.LastErrorText
    destroy loo_Ssh1
    return
end if

// Authenticate using login/password:
li_Success = loo_Ssh1.AuthenticatePw("myLogin","myPassword")
if li_Success <> 1 then
    Write-Debug loo_Ssh1.LastErrorText
    destroy loo_Ssh1
    return
end if

// Connect through the 1st SSH connection to reach a 2nd SSH server (for SFTP)
// Note: Any number of connections may be simultaneously tunneled through a single
// existing SSH connection.
loo_Sftp = create oleobject
li_rc = loo_Sftp.ConnectToNewObject("Chilkat_9_5_0.SFtp")

// Connect to some SSH/SFTP server through ssh1.
li_Success = loo_Sftp.ConnectThroughSsh(loo_Ssh1,"sftp.someremoteserver.com",22)
if li_Success <> 1 then
    Write-Debug loo_Sftp.LastErrorText
    destroy loo_Ssh1
    destroy loo_Sftp
    return
end if

// Authenticate with the SFTP server. 
li_Success = loo_Sftp.AuthenticatePw("myLogin","myPassword")
if li_Success <> 1 then
    Write-Debug loo_Sftp.LastErrorText
    destroy loo_Ssh1
    destroy loo_Sftp
    return
end if

// After authenticating, the SFTP subsystem must be initialized:
li_Success = loo_Sftp.InitializeSftp()
if li_Success <> 1 then
    Write-Debug loo_Sftp.LastErrorText
    destroy loo_Ssh1
    destroy loo_Sftp
    return
end if

// Upload from the local file to the SSH server.
// Important -- the remote filepath is the 1st argument,
// the local filepath is the 2nd argument;
ls_RemoteFilePath = "hamlet.xml"
ls_LocalFilePath = "c:/temp/hamlet.xml"

li_Success = loo_Sftp.UploadFileByName(ls_RemoteFilePath,ls_LocalFilePath)
if li_Success <> 1 then
    Write-Debug loo_Sftp.LastErrorText
    destroy loo_Ssh1
    destroy loo_Sftp
    return
end if

Write-Debug "Success."

// Close the connection with the SFTP server.(This closes the the tunnel through ssh1.)
// The connection with ssh1 is still alive, and may be used for more connections.
loo_Sftp.Disconnect()

// ...
// ...
// ...

loo_Ssh1.Disconnect()


destroy loo_Ssh1
destroy loo_Sftp

 

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