1/*
2 * Copyright (C) 2023 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16#include "permission_util.h"
17
18#include "accesstoken_kit.h"
19#include "data_storage_log_wrapper.h"
20#include "ipc_skeleton.h"
21
22namespace OHOS {
23namespace Telephony {
24using namespace Security::AccessToken;
25
26/**
27 * @brief Permission check by callingUid.
28 * @param permissionName permission name.
29 * @return Returns true on success, false on failure.
30 */
31bool PermissionUtil::CheckPermission(const std::string &permissionName)
32{
33    if (permissionName.empty()) {
34        DATA_STORAGE_LOGD("permission check failed, permission name is empty.");
35        return false;
36    }
37
38    auto callerToken = IPCSkeleton::GetCallingTokenID();
39    int result = AccessTokenKit::VerifyAccessToken(callerToken, permissionName);
40    if (result != PermissionState::PERMISSION_GRANTED) {
41        DATA_STORAGE_LOGD("permission check failed, permission:%{public}s, callerToken:%{public}u",
42            permissionName.c_str(), callerToken);
43        return false;
44    }
45    return true;
46}
47} // namespace Telephony
48} // namespace OHOS
49