(Delphi DLL) Dynamics CRM Oauth2 Client Credentials

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

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, HttpRequest, HttpResponse, JsonObject;

...

procedure TForm1.Button1Click(Sender: TObject);
var
http: HCkHttp;
req: HCkHttpRequest;
url: PWideChar;
resp: HCkHttpResponse;
statusCode: Integer;
json: HCkJsonObject;

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

http := CkHttp_Create();

// Pass the client ID/secret using Basic HTTP authentication.
CkHttp_putLogin(http,'CLIENT_ID');
CkHttp_putPassword(http,'CLIENT_SECRET');
CkHttp_putBasicAuth(http,True);

req := CkHttpRequest_Create();
CkHttpRequest_AddParam(req,'client_secret','CLIENT_SECRET');
CkHttpRequest_AddParam(req,'client_id','CLIENT_ID');
CkHttpRequest_AddParam(req,'scope','https://yourdynamicsdomain.crm3.dynamics.com/.default');
CkHttpRequest_AddParam(req,'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 := CkHttp_PostUrlEncoded(http,url,req);
if (CkHttp_getLastMethodSuccess(http) <> True) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

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

json := CkJsonObject_Create();
CkJsonObject_Load(json,CkHttpResponse__bodyStr(resp));
CkHttpResponse_Dispose(resp);

CkJsonObject_putEmitCompact(json,False);
Memo1.Lines.Add(CkJsonObject__emit(json));

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

CkHttp_Dispose(http);
CkHttpRequest_Dispose(req);
CkJsonObject_Dispose(json);

end;