(Delphi DLL) Quickbooks Revoke OAuth2 Token

Demonstrates how to revoke a QuickBooks OAuth2 access token.

For more information, see https://developer.intuit.com/app/developer/qbo/docs/develop/authentication-and-authorization/oauth-2.0#revoke-token-disconnect

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

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

...

procedure TForm1.Button1Click(Sender: TObject);
var
jsonToken: HCkJsonObject;
success: Boolean;
http: HCkHttp;
json: HCkJsonObject;
url: PWideChar;
resp: HCkHttpResponse;

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

// This example assumes we previously obtained an OAuth2 access token for QuickBooks.

jsonToken := CkJsonObject_Create();
success := CkJsonObject_LoadFile(jsonToken,'qa_data/tokens/qb-access-token.json');
if (success <> True) then
  begin
    Memo1.Lines.Add('Failed to load qb-access-token.json');
    Exit;
  end;

// The access token JSON looks something like this:

// {
//   "expires_in": 3600,
//   "x_refresh_token_expires_in": 8726400,
//   "refresh_token": "L011546037639r ... 3vR2DrbOmg0Sdagw",
//   "access_token": "eyJlbmMiOiJBMTI4Q0 ... oETJEMbeggg",
//   "token_type": "bearer"
// }

// This code sends the following request:

// POST https://developer.api.intuit.com/v2/oauth2/tokens/revoke HTTP/1.1
// Accept: application/json
// Authorization: Basic UTM0dVB...wM1d2
// Content-Type: application/json
// 
// {
//     "token": "{bearerToken or refreshToken}"
// }

// Use this online tool to generate HTTP code from a sample request: 
// Generate Code from a Sample HTTP Request

http := CkHttp_Create();
CkHttp_SetRequestHeader(http,'Accept','application/json');
CkHttp_putBasicAuth(http,True);
CkHttp_putLogin(http,'QUICKBOOKS-CLIENT-ID');
CkHttp_putPassword(http,'QUICKBOOKS-CLIENT-SECRET');

json := CkJsonObject_Create();
CkJsonObject_UpdateString(json,'token',CkJsonObject__stringOf(jsonToken,'access_token'));

url := 'https://developer.api.intuit.com/v2/oauth2/tokens/revoke';
resp := CkHttp_PostJson3(http,url,'application/json',json);
if (CkHttp_getLastMethodSuccess(http) <> True) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

Memo1.Lines.Add('Response status code = ' + IntToStr(CkHttpResponse_getStatusCode(resp)));
Memo1.Lines.Add('Response body:');
Memo1.Lines.Add(CkHttpResponse__bodyStr(resp));
CkHttpResponse_Dispose(resp);

CkJsonObject_Dispose(jsonToken);
CkHttp_Dispose(http);
CkJsonObject_Dispose(json);

end;