Objective-C Requires Chilkat v11.5.0+

Box: Refresh and Save Rotated OAuth Tokens

See more Box Examples

Refresh the user token saved by the authorization example. Box refresh tokens are single-use and expire after 60 days. Serialize refreshes for a token pair and save the replacement immediately; do not run concurrent refresh jobs.

See the Box API guide for setup and the complete workflow.

Objective-C

#import <CkoJsonObject.h>
#import <CkoOAuth2.h>

BOOL success = NO;

//  Requires Chilkat 11.5.0 or later and a previously unlocked Chilkat bundle.
//  See Global Unlock Sample.
//  Guide: Box API Guide.

success = NO;

CkoJsonObject *tokens = [[CkoJsonObject alloc] init];
success = [tokens LoadFile: @"qa_data/tokens/box_oauth.json"];
if (success != YES) {
    NSLog(@"%@",tokens.LastErrorText);
    return;
}

CkoOAuth2 *oauth2 = [[CkoOAuth2 alloc] init];
oauth2.TokenEndpoint = @"https://api.box.com/oauth2/token";
oauth2.ClientId = @"BOX_CLIENT_ID";
oauth2.ClientSecret = @"BOX_CLIENT_SECRET";
oauth2.RefreshToken = [tokens StringOf: @"refresh_token"];
success = [oauth2 RefreshAccessToken];
if (success != YES) {
    NSLog(@"%@",oauth2.LastErrorText);
    return;
}

success = [tokens Load: oauth2.AccessTokenResponse];
if (success != YES) {
    NSLog(@"%@",tokens.LastErrorText);
    return;
}

//  The previous refresh token is now invalid. Preserve this response even if
//  your normal token-store write fails. Do not retry with the old refresh token.
success = [tokens WriteFile: @"qa_data/tokens/box_oauth.json"];
if (success != YES) {
    NSLog(@"%@",tokens.LastErrorText);
    return;
}

NSLog(@"%@",@"New access and refresh tokens saved. Do not log their values.");