Lianja

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). Lianja

llSuccess = .F.

// 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