(Objective-C) UPS OAuth2 Client Credentials

See more UPS Examples

Get an OAuth2 access token for the UPS REST API using the client credentials flow (no interactivity with a web browser required).

For more information, see https://developer.ups.com/api/reference?loc=en_US#tag/OAuthClientCredentials_other

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

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

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

// Implements the following CURL command:

// curl -i -X POST \
//   -u 2498righ8wr6aihe98rt8rhowirtyw9er6twe80rtywrehrt:nerf254578uh8rgt7y3h57358ouyth387h8h53h6yyh80hh578per9y7u5ruyuy4 \
//   https://wwwcie.ups.com/security/v1/oauth/token \
//   -H 'Content-Type: application/x-www-form-urlencoded' \
//   -H 'x-merchant-id: 7B3027' \
//   -d grant_type=client_credentials

// Use the following online tool to generate HTTP code from a CURL command
// Convert a cURL Command to HTTP Source Code

http.BasicAuth = YES;
http.Login = @"2498righ8wr6aihe98rt8rhowirtyw9er6twe80rtywrehrt";
http.Password = @"nerf254578uh8rgt7y3h57358ouyth387h8h53h6yyh80hh578per9y7u5ruyuy4";

CkoHttpRequest *req = [[CkoHttpRequest alloc] init];
[req AddParam: @"grant_type" value: @"client_credentials"];

[req AddHeader: @"x-merchant-id" value: @"7B3027"];

CkoHttpResponse *resp = [http PostUrlEncoded: @"https://wwwcie.ups.com/security/v1/oauth/token" req: req];
if (http.LastMethodSuccess == NO) {
    NSLog(@"%@",http.LastErrorText);
    return;
}

CkoStringBuilder *sbResponseBody = [[CkoStringBuilder alloc] init];
[resp GetBodySb: sbResponseBody];

CkoJsonObject *jResp = [[CkoJsonObject alloc] init];
[jResp LoadSb: sbResponseBody];
jResp.EmitCompact = NO;

NSLog(@"%@",@"Response Body:");
NSLog(@"%@",[jResp Emit]);

int respStatusCode = [resp.StatusCode intValue];
NSLog(@"%@%d",@"Response Status Code = ",respStatusCode);
if (respStatusCode >= 400) {
    NSLog(@"%@",@"Response Header:");
    NSLog(@"%@",resp.Header);
    NSLog(@"%@",@"Failed.");

    return;
}

// Save the OAuth2 access token for other examples to use.
[jResp WriteFile: @"qa_data/tokens/ups_oauth2_token.json"];

// If successful, the OAuth2 access token JSON looks like this:

// {
//   "token_type": "Bearer",
//   "issued_at": "1686911985606",
//   "client_id": "2498righ8wr6aihe98rt8rhowirtyw9er6twe80rtywrehrt",
//   "access_token": "eyJraW......R2sbqrY",
//   "expires_in": "14399",
//   "status": "approved"
// }

NSString *token_type = [jResp StringOf: @"token_type"];
NSString *issued_at = [jResp StringOf: @"issued_at"];
NSString *client_id = [jResp StringOf: @"client_id"];
NSString *access_token = [jResp StringOf: @"access_token"];
NSString *expires_in = [jResp StringOf: @"expires_in"];
NSString *status = [jResp StringOf: @"status"];