(Delphi ActiveX) SCP Upload Contents of String to Remote File

Demonstrates how to upload the contents of a string variable using the SCP protocol (Secure Copy Protocol over SSH). The text is uploaded to a file in specific remote directory. If the file did not already exist, it is created. If it already existed, it is overwritten.

Chilkat for Delphi Downloads Chilkat ActiveX DLL for Delphi Chilkat non-ActiveX DLL for Delphi * The examples here use the ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
ssh: TChilkatSsh;
hostname: WideString;
port: Integer;
success: Integer;
scp: TChilkatScp;
content: WideString;
remotePath: WideString;
charset: WideString;

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

ssh := TChilkatSsh.Create(Self);

// Connect to an SSH server:

// Hostname may be an IP address or hostname:
hostname := 'www.some-ssh-server.com';
port := 22;

success := ssh.Connect(hostname,port);
if (success <> 1) then
  begin
    Memo1.Lines.Add(ssh.LastErrorText);
    Exit;
  end;

// Wait a max of 5 seconds when reading responses..
ssh.IdleTimeoutMs := 5000;

// Authenticate using login/password:
success := ssh.AuthenticatePw('myLogin','myPassword');
if (success <> 1) then
  begin
    Memo1.Lines.Add(ssh.LastErrorText);
    Exit;
  end;

// Once the SSH object is connected and authenticated, we use it
// as the underlying transport in our SCP object.
scp := TChilkatScp.Create(Self);

success := scp.UseSsh(ssh.ControlInterface);
if (success <> 1) then
  begin
    Memo1.Lines.Add(scp.LastErrorText);
    Exit;
  end;

content := 'This string will be the contents of the remote file.';
remotePath := 'uploads/text/testUtf8.txt';

// The utf-8 byte representation of the string will be uploaded.
// See https://www.chilkatsoft.com/p/p_463.asp for a list of valid charsets.
charset := 'utf-8';

// This uploads to the "uploads/text" directory relative to the HOME
// directory of the SSH user account.  
// Note: The remote target directory must already exist on the SSH server.
success := scp.UploadString(remotePath,content,charset);
if (success <> 1) then
  begin
    Memo1.Lines.Add(scp.LastErrorText);
    Exit;
  end;

remotePath := 'uploads/text/testUtf8_withBOM.txt';

// To include the utf-8 preamble (also known as the BOM),
// prefix the charset name with "bom:".  Any charset that can 
// optionally include a BOM can be specified in this way.
charset := 'bom:utf-8';

// Uploads to a remote file that contains text in the 
// utf-8 representation, including the BOM at the start of the file.
success := scp.UploadString(remotePath,content,charset);
if (success <> 1) then
  begin
    Memo1.Lines.Add(scp.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add('SCP upload string success.');

// Disconnect
ssh.Disconnect();
end;