(Delphi ActiveX) Dynamics CRM Oauth2 Client Credentials

Get an OAuth2 access token for Dynamics CRM using client credentials.

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
http: TChilkatHttp;
req: TChilkatHttpRequest;
url: WideString;
resp: IChilkatHttpResponse;
statusCode: Integer;
json: TChilkatJsonObject;

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

http := TChilkatHttp.Create(Self);

// Pass the client ID/secret using Basic HTTP authentication.
http.Login := 'CLIENT_ID';
http.Password := 'CLIENT_SECRET';
http.BasicAuth := 1;

req := TChilkatHttpRequest.Create(Self);
req.AddParam('client_secret','CLIENT_SECRET');
req.AddParam('client_id','CLIENT_ID');
req.AddParam('scope','https://yourdynamicsdomain.crm3.dynamics.com/.default');
req.AddParam('grant_type','client_credentials');

// Use your own tenant ID, for example 4d8fdd66-66d1-43b0-ae5c-e31b4b7de5cd
url := 'https://login.microsoftonline.com/TENANT_ID/oauth2/v2.0/token';
resp := http.PostUrlEncoded(url,req.ControlInterface);
if (http.LastMethodSuccess <> 1) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

statusCode := resp.StatusCode;
Memo1.Lines.Add('Response status code = ' + IntToStr(statusCode));

json := TChilkatJsonObject.Create(Self);
json.Load(resp.BodyStr);

json.EmitCompact := 0;
Memo1.Lines.Add(json.Emit());

if (statusCode = 200) then
  begin
    json.WriteFile('qa_data/tokens/dynamicsCrmClientCredentialsToken.json');
    Memo1.Lines.Add('Success.');
  end
else
  begin
    Memo1.Lines.Add('Failed.');
  end;
end;