Objective-C

Azure OAuth2 Client Credentials Grant Flow

See more OAuth2 Examples

Demonstrates how to get an OAuth2 access token for an Azure Registered App using the Client Credentials Grant Flow.

Note: Your Azure app must be registered as a single-tenant app to use client credentials.

Objective-C

#import <CkoHttp.h>
#import <CkoHttpRequest.h>
#import <NSString.h>
#import <CkoHttpResponse.h>
#import <CkoJsonObject.h>

BOOL success = NO;

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

CkoHttp *http = [[CkoHttp alloc] init];

CkoHttpRequest *req = [[CkoHttpRequest alloc] init];
[req AddParam: @"client_secret" value: @"CLIENT_SECRET"];
[req AddParam: @"client_id" value: @"CLIENT_ID"];

// See Understanding Scopes in Azure OAuth2 Client Credentials Flow
[req AddParam: @"scope" value: @"https://graph.microsoft.com/.default"];

[req AddParam: @"grant_type" value: @"client_credentials"];

// Note: Your Azure app must be registered as a single-tenant app to use client credentials.
// Use your own tenant ID, for example 4d8fdd66-66d1-43b0-ae5c-e31b4b7de5cd
NSString *url = @"https://login.microsoftonline.com/TENANT_ID/oauth2/v2.0/token";

req.HttpVerb = @"POST";
req.ContentType = @"application/x-www-form-urlencoded";

CkoHttpResponse *resp = [[CkoHttpResponse alloc] init];
success = [http HttpReq: url request: req response: resp];
if (success == NO) {
    NSLog(@"%@",http.LastErrorText);
    return;
}

int statusCode = [resp.StatusCode intValue];
NSLog(@"%@%d",@"Response status code = ",statusCode);

CkoJsonObject *json = [[CkoJsonObject alloc] init];
[json Load: resp.BodyStr];

json.EmitCompact = NO;
NSLog(@"%@",[json Emit]);

// Sample successful output:

// {
//   "token_type": "Bearer",
//   "expires_in": 3599,
//   "ext_expires_in": 3599,
//   "access_token": "eyJ0eX...K0jOERg"
// }

if (statusCode == 200) {
    [json WriteFile: @"qa_data/tokens/azureClientCredentialsToken.json"];
    NSLog(@"%@",@"Success.");
}
else {
    NSLog(@"%@",@"Failed.");
}