Pascal (Lazarus/Delphi)

SFTP Get/Set File Permission

See more SFTP Examples

Demonstrates how to set the permissions of a file on the SFTP server. Pascal (Lazarus/Delphi)

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.SFtp;

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

procedure RunDemo;
var
  success: Boolean;
  sftp: TSFtp;
  hostname: string;
  port: Integer;
  isHandle: Boolean;
  followLinks: Boolean;
  permVal: Integer;

begin
  success := False;

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

  sftp := TSFtp.Create;

  //  Connect to the SSH/SFTP server.  
  hostname := 'sftp.example.com';
  port := 22;
  success := sftp.Connect(hostname,port);
  if (success <> True) then
    begin
      WriteLn(sftp.LastErrorText);
      Exit;
    end;

  //  Authenticate with the SSH server.  Chilkat SFTP supports
  //  both password-based authenication as well as public-key
  //  authentication.  This example uses password authenication.
  success := sftp.AuthenticatePw('myLogin','myPassword');
  if (success <> True) then
    begin
      WriteLn(sftp.LastErrorText);
      Exit;
    end;

  //  After authenticating, the SFTP subsystem must be initialized:
  success := sftp.InitializeSftp();
  if (success <> True) then
    begin
      WriteLn(sftp.LastErrorText);
      Exit;
    end;

  //  Get the file permissions for the "hamlet.xml" file on the server.
  //  The hamlet.xml file is located in the qa_data directory found under the HOME directory of the SSH user account.
  //  We are passing the remote file path (we are not passing a file handle returned by a previous call to OpenFile).
  isHandle := False;
  followLinks := True;
  permVal := sftp.GetFilePermissions('qa_data/hamlet.xml',followLinks,isHandle);
  if (permVal < 0) then
    begin
      WriteLn(sftp.LastErrorText);
      Exit;
    end;

  //  Note: Filesystem permissions on Linux/Unix/MacOSX are typically written in octal (POSIX file permissions).  For example 0644 is octal.
  //  To convert to decimal: octal 644 = 6*8^2 + 4*8 + 4 = 420 (decimal)
  //  
  //  The server may return a permissions value (in octal) such as 100644.
  //  The "100" indicates the file type, such as regular file or directory. 

  //  Show the decimal value of the permissions
  WriteLn('decimal permissions value: ' + permVal);

  //  To set the file permissions, pass the integer value.
  //  Let's change the permissions to 0664, which is 6*8^2 + 6*8 + 4 = 436 (decimal)
  success := sftp.SetPermissions('qa_data/hamlet.xml',isHandle,436);
  if (success <> True) then
    begin
      WriteLn(sftp.LastErrorText);
      Exit;
    end;

  WriteLn('Success.');


  sftp.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.