1 /*
2 * Copyright (C) 2021 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 "telephony_permission.h"
17
18 #include "bundle_mgr_interface.h"
19 #include "if_system_ability_manager.h"
20 #include "ipc_skeleton.h"
21 #include "iservice_registry.h"
22 #include "system_ability_definition.h"
23 #include "accesstoken_kit.h"
24 #include "privacy_kit.h"
25
26 #include "telephony_log_wrapper.h"
27
28 namespace OHOS {
29 namespace Telephony {
30 using namespace Security::AccessToken;
31
32 /**
33 * @brief Get bundleName by callingUid.
34 * @param callingUid.
35 * @param bundleName.
36 * @return Returns true on success, false on failure.
37 */
GetBundleNameByUid(int32_t uid,std::string & bundleName)38 bool TelephonyPermission::GetBundleNameByUid(int32_t uid, std::string &bundleName)
39 {
40 OHOS::sptr<OHOS::ISystemAbilityManager> systemAbilityManager =
41 OHOS::SystemAbilityManagerClient::GetInstance().GetSystemAbilityManager();
42 OHOS::sptr<OHOS::IRemoteObject> remoteObject =
43 systemAbilityManager->GetSystemAbility(BUNDLE_MGR_SERVICE_SYS_ABILITY_ID);
44
45 sptr<AppExecFwk::IBundleMgr> iBundleMgr = OHOS::iface_cast<AppExecFwk::IBundleMgr>(remoteObject);
46 if (iBundleMgr == nullptr) {
47 TELEPHONY_LOGE(" permission check failed, cannot get IBundleMgr.");
48 return false;
49 }
50 return iBundleMgr->GetBundleNameForUid(uid, bundleName);
51 }
52
53 /**
54 * @brief Permission check by callingUid.
55 * @param permissionName permission name.
56 * @return Returns true on success, false on failure.
57 */
CheckPermission(const std::string & permissionName)58 bool TelephonyPermission::CheckPermission(const std::string &permissionName)
59 {
60 if (permissionName.empty()) {
61 TELEPHONY_LOGE("permission check failed，permission name is empty.");
62 return false;
63 }
64
65 auto callerToken = IPCSkeleton::GetCallingTokenID();
66 auto tokenType = AccessTokenKit::GetTokenTypeFlag(callerToken);
67 int result = PermissionState::PERMISSION_DENIED;
68 if (tokenType == ATokenTypeEnum::TOKEN_NATIVE) {
69 result = PermissionState::PERMISSION_GRANTED;
70 } else if (tokenType == ATokenTypeEnum::TOKEN_HAP) {
71 result = AccessTokenKit::VerifyAccessToken(callerToken, permissionName);
72 } else {
73 TELEPHONY_LOGE("permission check failed, callerToken:%{public}u, tokenType:%{public}d",
74 callerToken, tokenType);
75 }
76
77 if (permissionName == Permission::ANSWER_CALL || permissionName == Permission::READ_CALL_LOG
78 || permissionName == Permission::READ_CONTACTS || permissionName == Permission::WRITE_CONTACTS
79 || permissionName == Permission::SEND_MESSAGES) {
80 if (tokenType == ATokenTypeEnum::TOKEN_HAP) {
81 bool status = result == PermissionState::PERMISSION_GRANTED;
82 int32_t successCount = status ? 1 : 0;
83 int32_t failCount = status ? 0 : 1;
84 int32_t ret = PrivacyKit::AddPermissionUsedRecord(callerToken, permissionName, successCount, failCount);
85 if (ret != 0) {
86 TELEPHONY_LOGE("AddPermissionUsedRecord failed, permission:%{public}s, "
87 "successCount:%{public}d, failCount:%{public}d", permissionName.c_str(), successCount, failCount);
88 }
89 }
90 }
91
92 if (result != PermissionState::PERMISSION_GRANTED) {
93 TELEPHONY_LOGE("permission check failed, permission:%{public}s, callerToken:%{public}u, tokenType:%{public}d",
94 permissionName.c_str(), callerToken, tokenType);
95 return false;
96 }
97 return true;
98 }
99 } // namespace Telephony
100 } // namespace OHOS