Pascal (Lazarus/Delphi)

Office365 IMAP with OAuth2 Authentication

See more Office365 Examples

Demonstrates how to authenticate using OAuth2 with outlook.office365.com. 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.Imap,
  Chilkat.JsonObject;

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

procedure RunDemo;
var
  success: Boolean;
  jsonToken: TJsonObject;
  imap: TImap;

begin
  success := False;

  //  An Office365 OAuth2 access token must first be obtained prior
  //  to running this code.

  //  Getting the OAuth2 access token for the 1st time requires the O365 account owner's 
  //  interactive authorizaition via a web browser.  Afterwards, the access token
  //  can be repeatedly refreshed automatically.

  //  See the following examples for getting and refreshing an OAuth2 access token

  //  Get Office365 SMTP/IMAP/POP3 OAuth2 Access Token
  //  Refresh Office365 SMTP/IMAP/POP3 OAuth2 Access Token

  //  First get our previously obtained OAuth2 access token.
  jsonToken := TJsonObject.Create;
  success := jsonToken.LoadFile('qa_data/tokens/office365.json');
  if (success = False) then
    begin
      WriteLn('Failed to open the office365 OAuth JSON file.');
      Exit;
    end;

  imap := TImap.Create;

  imap.Ssl := True;
  imap.Port := 993;

  //  Connect to the Office365 IMAP server.
  success := imap.Connect('outlook.office365.com');
  if (success <> True) then
    begin
      WriteLn(imap.LastErrorText);
      Exit;
    end;

  //  Use OAuth2 authentication.
  imap.AuthMethod := 'XOAUTH2';

  //  Login using our username (i.e. email address) and the access token for the password.
  success := imap.Login('OFFICE365_EMAIL_ADDRESS',jsonToken.StringOf('access_token'));
  if (success <> True) then
    begin
      WriteLn(imap.LastErrorText);
      Exit;
    end;

  WriteLn('O365 OAuth authentication is successful.');

  //  Do something...
  success := imap.SelectMailbox('Inbox');
  if (success <> True) then
    begin
      WriteLn(imap.LastErrorText);
      Exit;
    end;

  //  Your application can continue to do other things in the IMAP session....

  //  When finished, logout and close the connection.
  success := imap.Logout();
  success := imap.Disconnect();

  WriteLn('Finished.');


  jsonToken.Free;
  imap.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.