(Lianja) SCP Download/Upload Binary Files as Encoded Strings

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

Chilkat Lianja Extension Download Chilkat Lianja Extension

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

loSsh = createobject("CkSsh")

// Hostname may be an IP address or hostname:
lcHostname = "www.some-ssh-server.com"
lnPort = 22

// Connect to an SSH server:
llSuccess = loSsh.Connect(lcHostname,lnPort)
if (llSuccess <> .T.) then
    ? loSsh.LastErrorText
    release loSsh
    return
endif

// Wait a max of 5 seconds when reading responses..
loSsh.IdleTimeoutMs = 5000

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

// Once the SSH object is connected and authenticated, we use it
// in our SCP object.
loScp = createobject("CkScp")

llSuccess = loScp.UseSsh(loSsh)
if (llSuccess <> .T.) then
    ? loScp.LastErrorText
    release loSsh
    release loScp
    return
endif

lcRemotePath = "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.
lcEncodedJpg = loScp.DownloadBinaryEncoded(lcRemotePath,"base64")
if (loScp.LastMethodSuccess <> .T.) then
    ? loScp.LastErrorText
    release loSsh
    release loScp
    return
endif

lcRemotePath = "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
llSuccess = loScp.UploadBinaryEncoded(lcRemotePath,lcEncodedJpg,"base64")
if (llSuccess <> .T.) then
    ? loScp.LastErrorText
    release loSsh
    release loScp
    return
endif

? "SCP download/upload binary encoded success."

// Disconnect
loSsh.Disconnect()


release loSsh
release loScp