Ruby

SCP Download/Upload Binary Files as Encoded Strings

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Demonstrates how to upload and download binary files as encoded strings (base64, hex, etc.) using the SCP protocol (Secure Copy Protocol over SSH). Ruby

require 'chilkat'

success = false

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

ssh = Chilkat::CkSsh.new()

# Hostname may be an IP address or hostname:
hostname = "www.some-ssh-server.com"
port = 22

# Connect to an SSH server:
success = ssh.Connect(hostname,port)
if (success != true)
    print ssh.lastErrorText() + "\n";
    exit
end

# Wait a max of 5 seconds when reading responses..
ssh.put_IdleTimeoutMs(5000)

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

# Once the SSH object is connected and authenticated, we use it
# in our SCP object.
scp = Chilkat::CkScp.new()

success = scp.UseSsh(ssh)
if (success != true)
    print scp.lastErrorText() + "\n";
    exit
end

remotePath = "images/starfish.jpg"

# Download the binary file and return as a base64 string.
# See <a href="http://www.cknotes.com/chilkat-binary-encoding-list/">List of Encodings</a> for a list of possible encodings.
encodedJpg = scp.downloadBinaryEncoded(remotePath,"base64")
if (scp.get_LastMethodSuccess() != true)
    print scp.lastErrorText() + "\n";
    exit
end

remotePath = "images/starfish2.jpg"

# Now upload from the base64 string to the SSH server.
# Insided the call to UploadBinaryEncoded, the base64 string is decoded,
# and the decoded bytes are uploaded.  The resulting starfish2.jpg on the
# server will be identical to the original starfish.jpg
success = scp.UploadBinaryEncoded(remotePath,encodedJpg,"base64")
if (success != true)
    print scp.lastErrorText() + "\n";
    exit
end

print "SCP download/upload binary encoded success." + "\n";

# Disconnect
ssh.Disconnect()