URL for Listing Objects

static void test_list_object_auth()
{
    // Create and initialize option.
    obs_options option;
    init_obs_options(&option);
    option.bucket_options.host_name = "<your-endpoint>";
    option.bucket_options.bucket_name = "<Your bucketname>";

    // Hard-coded or plaintext AK/SK are risky. For security purposes, encrypt your AK/SK and store them in the configuration file or environment variables. In this example, the AK/SK are stored in environment variables for identity authentication. Before running this example, configure environment variables ACCESS_KEY_ID and SECRET_ACCESS_KEY.
    // Obtain an AK/SK pair on the management console. For details, see https://support.huaweicloud.com/eu/usermanual-ca/ca_01_0003.html.
    option.bucket_options.access_key = getenv("ACCESS_KEY_ID");
    option.bucket_options.secret_access_key = getenv("SECRET_ACCESS_KEY");
    temp_auth_configure tempauth;
        
    tempAuthResult  ptrResult;
    memset_s(&ptrResult,sizeof(tempAuthResult),0,sizeof(tempAuthResult));
    // Callback data
    tempauth.callback_data = (void *)(&ptrResult);  
    // Validity period
    tempauth.expires = 10;
    // Callback function returns and generates the temporary URL.
    tempauth.temp_auth_callback = &tempAuthCallBack_getResult;
    option.temp_auth = &tempauth;
    // The maximum number of objects to be listed
    int maxkeys  =  100;
    obs_list_objects_handler list_bucket_objects_handler =
    {
            { &response_properties_callback, &list_object_complete_callback },
            &list_objects_callback
     };
    list_object_callback_data data;
    memset(&data, 0, sizeof(list_object_callback_data)); 
    list_bucket_objects(&option, NULL, data.next_marker,NULL, maxkeys, 
    &list_bucket_objects_handler, &data); 
    if (OBS_STATUS_OK == data.ret_status) {printf("the temporary signature url of list bucket objects generated successfully. The result is recorded in the tmpAuthUrl.txt file. \n");
    }
    else
    {
         printf("the temporary signature url of list bucket objects generation failed(%s).\n", 
                                obs_get_status_name(data.ret_status));
    }
}