Authenticate an IMAP SSH Tunnel with a Private Key

See more IMAP Examples

Demonstrates the Chilkat Imap.SshAuthenticatePk method, which authenticates the SSH tunnel using a username and an SshKey private key. The first argument is the SSH login name and the second is the private key. Call SshOpenTunnel first; the matching public key must already be authorized for the login on the SSH server.

Note: The private-key path is relative to the application's current working directory. Supply the path to your own key file.

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.Imap,
  Chilkat.SshKey;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  imap: TImap;
  sshPort: Integer;
  privKey: TSshKey;
  keyStr: string;

begin
  success := False;

  //  Demonstrates the Imap.SshAuthenticatePk method, which authenticates the SSH tunnel using a
  //  username and a private key.  The 1st argument is the SSH login name and the 2nd is an SshKey
  //  private key.  Call SshOpenTunnel first.

  imap := TImap.Create;

  sshPort := 22;
  success := imap.SshOpenTunnel('ssh.example.com',sshPort);
  if (success = False) then
    begin
      WriteLn(imap.LastErrorText);
      Exit;
    end;

  //  Load the SSH private key.  LoadText returns the file's text, which is then imported.
  privKey := TSshKey.Create;
  keyStr := privKey.LoadText('qa_data/id_rsa');
  if (privKey.LastMethodSuccess = False) then
    begin
      WriteLn(privKey.LastErrorText);
      Exit;
    end;
  success := privKey.FromOpenSshPrivateKey(keyStr);
  if (success = False) then
    begin
      WriteLn(privKey.LastErrorText);
      Exit;
    end;

  //  Authenticate the SSH tunnel with the private key.  The matching public key must already be
  //  authorized for the login on the SSH server.
  success := imap.SshAuthenticatePk('sshUser',privKey);
  if (success = False) then
    begin
      WriteLn(imap.LastErrorText);
      Exit;
    end;

  //  With the SSH tunnel in place, connect and log in to the IMAP server as usual.  The IMAP
  //  traffic flows through the tunnel automatically.
  imap.Ssl := True;
  imap.Port := 993;
  success := imap.Connect('imap.example.com');
  if (success = False) then
    begin
      WriteLn(imap.LastErrorText);
      Exit;
    end;
  success := imap.Login('user@example.com','myPassword');
  if (success = False) then
    begin
      WriteLn(imap.LastErrorText);
      Exit;
    end;

  success := imap.Disconnect();
  if (success = False) then
    begin
      WriteLn(imap.LastErrorText);
      Exit;
    end;

  success := imap.SshCloseTunnel();
  if (success = False) then
    begin
      WriteLn(imap.LastErrorText);
      Exit;
    end;


  imap.Free;
  privKey.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.