Lianja

Multiple Hop SSH to SFTP

See more SFTP Examples

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.

Lianja

llSuccess = .F.

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

loSsh1 = createobject("CkSsh")

// Hostname may be an IP address or domain name:
lcHostname = "192.168.1.111"
lcPort = 22

// Connect directly to the 1st SSH server:
llSuccess = loSsh1.Connect(lcHostname,lcPort)
if (llSuccess <> .T.) then
    ? loSsh1.LastErrorText
    release loSsh1
    return
endif

// Authenticate using login/password:
llSuccess = loSsh1.AuthenticatePw("myLogin","myPassword")
if (llSuccess <> .T.) then
    ? loSsh1.LastErrorText
    release loSsh1
    return
endif

// 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.
loSftp = createobject("CkSFtp")

// Connect to some SSH/SFTP server through ssh1.
llSuccess = loSftp.ConnectThroughSsh(loSsh1,"sftp.someremoteserver.com",22)
if (llSuccess <> .T.) then
    ? loSftp.LastErrorText
    release loSsh1
    release loSftp
    return
endif

// Authenticate with the SFTP server. 
llSuccess = loSftp.AuthenticatePw("myLogin","myPassword")
if (llSuccess <> .T.) then
    ? loSftp.LastErrorText
    release loSsh1
    release loSftp
    return
endif

// After authenticating, the SFTP subsystem must be initialized:
llSuccess = loSftp.InitializeSftp()
if (llSuccess <> .T.) then
    ? loSftp.LastErrorText
    release loSsh1
    release loSftp
    return
endif

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

llSuccess = loSftp.UploadFileByName(lcRemoteFilePath,lcLocalFilePath)
if (llSuccess <> .T.) then
    ? loSftp.LastErrorText
    release loSsh1
    release loSftp
    return
endif

? "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.
loSftp.Disconnect()

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

loSsh1.Disconnect()


release loSsh1
release loSftp