Ruby

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.

Ruby

require 'chilkat'

success = false

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

ssh1 = Chilkat::CkSsh.new()

# Hostname may be an IP address or domain name:
hostname = "192.168.1.111"
port = 22

# Connect directly to the 1st SSH server:
success = ssh1.Connect(hostname,port)
if (success != true)
    print ssh1.lastErrorText() + "\n";
    exit
end

# Authenticate using login/password:
success = ssh1.AuthenticatePw("myLogin","myPassword")
if (success != true)
    print ssh1.lastErrorText() + "\n";
    exit
end

# 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.
sftp = Chilkat::CkSFtp.new()

# Connect to some SSH/SFTP server through ssh1.
success = sftp.ConnectThroughSsh(ssh1,"sftp.someremoteserver.com",22)
if (success != true)
    print sftp.lastErrorText() + "\n";
    exit
end

# Authenticate with the SFTP server. 
success = sftp.AuthenticatePw("myLogin","myPassword")
if (success != true)
    print sftp.lastErrorText() + "\n";
    exit
end

# After authenticating, the SFTP subsystem must be initialized:
success = sftp.InitializeSftp()
if (success != true)
    print sftp.lastErrorText() + "\n";
    exit
end

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

success = sftp.UploadFileByName(remoteFilePath,localFilePath)
if (success != true)
    print sftp.lastErrorText() + "\n";
    exit
end

print "Success." + "\n";

# 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.
sftp.Disconnect()

# ...
# ...
# ...

ssh1.Disconnect()