parse_traffic(char *buf, int len, char *port, uint64_t *traffic)
{
    char *data = get_data(buf, len);
    char error_buf[512];
    json_settings settings = { 0 };

    if (data == NULL) {
        LOGE("No data found");
        return -1;
    }

    json_value *obj = json_parse_ex(&settings, data, strlen(data), error_buf);
    if (obj == NULL) {
        LOGE("%s", error_buf);
        return -1;
    }

    if (obj->type == json_object) {
        int i = 0;
        for (i = 0; i < obj->u.object.length; i++) {
            char *name        = obj->u.object.values[i].name;
            json_value *value = obj->u.object.values[i].value;
            if (value->type == json_integer) {
                strncpy(port, name, 8);
                *traffic = value->u.integer;
            }
        }
    }

    json_value_free(obj);
    return 0;
}

The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.