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 #include "ext_permission_manager.h"
16 
17 #include "accesstoken_kit.h"
18 #include "hilog_wrapper.h"
19 #include "ipc_skeleton.h"
20 #include "tokenid_kit.h"
21 
22 namespace OHOS {
23 namespace ExternalDeviceManager {
24 using namespace OHOS::Security::AccessToken;
25 
VerifyPermission(std::string permissionName)26 bool ExtPermissionManager::VerifyPermission(std::string permissionName)
27 {
28     AccessTokenID callerToken = IPCSkeleton::GetCallingTokenID();
29     int result = AccessTokenKit::VerifyAccessToken(callerToken, permissionName);
30     if (result == PERMISSION_GRANTED) {
31         EDM_LOGI(MODULE_DEV_MGR, "%{public}s VerifyAccessToken: %{public}d", __func__, result);
32         return true;
33     }
34     return false;
35 }
36 
IsSystemApp()37 bool ExtPermissionManager::IsSystemApp()
38 {
39     uint64_t fullTokenId = IPCSkeleton::GetCallingFullTokenID();
40     if (TokenIdKit::IsSystemAppByFullTokenID(fullTokenId)) {
41         return true;
42     }
43     AccessTokenID callerToken = IPCSkeleton::GetCallingTokenID();
44     ATokenTypeEnum tokenType = AccessTokenKit::GetTokenTypeFlag(callerToken);
45     return tokenType != ATokenTypeEnum::TOKEN_HAP;
46 }
47 } // namespace ExternalDeviceManager
48 } // namespace OHOS