59 lines
2.3 KiB
C++
59 lines
2.3 KiB
C++
/*
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* Copyright (C) 2023 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <binder/IPCThreadState.h>
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#include <gui/LayerStatePermissions.h>
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#include <private/android_filesystem_config.h>
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#ifndef __ANDROID_VNDK__
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#include <binder/PermissionCache.h>
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#endif // __ANDROID_VNDK__
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#include <gui/LayerState.h>
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namespace android {
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std::unordered_map<std::string, int> LayerStatePermissions::mPermissionMap = {
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// If caller has ACCESS_SURFACE_FLINGER, they automatically get ROTATE_SURFACE_FLINGER
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// permission, as well
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{"android.permission.ACCESS_SURFACE_FLINGER",
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layer_state_t::Permission::ACCESS_SURFACE_FLINGER |
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layer_state_t::Permission::ROTATE_SURFACE_FLINGER},
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{"android.permission.ROTATE_SURFACE_FLINGER",
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layer_state_t::Permission::ROTATE_SURFACE_FLINGER},
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{"android.permission.INTERNAL_SYSTEM_WINDOW",
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layer_state_t::Permission::INTERNAL_SYSTEM_WINDOW},
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};
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static bool callingThreadHasPermission(const std::string& permission __attribute__((unused)),
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int pid __attribute__((unused)),
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int uid __attribute__((unused))) {
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#ifndef __ANDROID_VNDK__
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return uid == AID_GRAPHICS || uid == AID_SYSTEM ||
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PermissionCache::checkPermission(String16(permission.c_str()), pid, uid);
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#endif // __ANDROID_VNDK__
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return false;
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}
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uint32_t LayerStatePermissions::getTransactionPermissions(int pid, int uid) {
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uint32_t permissions = 0;
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for (auto [permissionName, permissionVal] : mPermissionMap) {
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if (callingThreadHasPermission(permissionName, pid, uid)) {
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permissions |= permissionVal;
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}
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}
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return permissions;
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}
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} // namespace android
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