| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| #define LOG_TAG "KeystoreOperation" |
| |
| #include "operation.h" |
| |
| #include <algorithm> |
| |
| namespace keystore { |
| |
| OperationMap::OperationMap(IBinder::DeathRecipient* deathRecipient) |
| : mDeathRecipient(deathRecipient) {} |
| |
| sp<IBinder> OperationMap::addOperation(uint64_t handle, uint64_t keyid, KeyPurpose purpose, |
| const sp<Keymaster>& dev, const sp<IBinder>& appToken, |
| KeyCharacteristics&& characteristics, |
| const hidl_vec<KeyParameter>& params, bool pruneable) { |
| sp<IBinder> token = new ::android::BBinder(); |
| mMap.emplace(token, Operation(handle, keyid, purpose, dev, std::move(characteristics), appToken, |
| params)); |
| if (pruneable) mLru.push_back(token); |
| if (mAppTokenMap.find(appToken) == mAppTokenMap.end()) appToken->linkToDeath(mDeathRecipient); |
| mAppTokenMap[appToken].push_back(token); |
| return token; |
| } |
| |
| NullOr<const Operation&> OperationMap::getOperation(const sp<IBinder>& token) { |
| auto entry = mMap.find(token); |
| if (entry == mMap.end()) return {}; |
| |
| updateLru(token); |
| return entry->second; |
| } |
| |
| void OperationMap::updateLru(const sp<IBinder>& token) { |
| auto lruEntry = std::find(mLru.begin(), mLru.end(), token); |
| if (lruEntry != mLru.end()) { |
| mLru.erase(lruEntry); |
| mLru.push_back(token); |
| } |
| } |
| |
| NullOr<Operation> OperationMap::removeOperation(const sp<IBinder>& token, bool wasSuccessful) { |
| auto entry = mMap.find(token); |
| if (entry == mMap.end()) return {}; |
| |
| Operation op = std::move(entry->second); |
| uploadOpAsProto(op, wasSuccessful); |
| mMap.erase(entry); |
| |
| auto lruEntry = std::find(mLru.begin(), mLru.end(), token); |
| if (lruEntry != mLru.end()) mLru.erase(lruEntry); |
| removeOperationTracking(token, op.appToken); |
| return op; |
| } |
| |
| void OperationMap::removeOperationTracking(const sp<IBinder>& token, const sp<IBinder>& appToken) { |
| auto appEntry = mAppTokenMap.find(appToken); |
| if (appEntry == mAppTokenMap.end()) { |
| ALOGE("Entry for %p contains unmapped application token %p", token.get(), appToken.get()); |
| return; |
| } |
| auto tokenEntry = std::find(appEntry->second.begin(), appEntry->second.end(), token); |
| appEntry->second.erase(tokenEntry); |
| // Stop listening for death if all operations tied to the token have finished. |
| if (appEntry->second.size() == 0) { |
| appToken->unlinkToDeath(mDeathRecipient); |
| mAppTokenMap.erase(appEntry); |
| } |
| } |
| |
| bool OperationMap::hasPruneableOperation() const { |
| return !mLru.empty(); |
| } |
| |
| size_t OperationMap::getPruneableOperationCount() const { |
| return mLru.size(); |
| } |
| |
| sp<IBinder> OperationMap::getOldestPruneableOperation() { |
| if (!hasPruneableOperation()) return sp<IBinder>(nullptr); |
| return mLru.front(); |
| } |
| |
| void OperationMap::setOperationAuthToken(const sp<IBinder>& token, HardwareAuthToken authToken) { |
| auto entry = mMap.find(token); |
| if (entry == mMap.end()) return; |
| |
| entry->second.authToken = std::move(authToken); |
| } |
| |
| void OperationMap::setOperationVerificationToken(const sp<IBinder>& token, |
| VerificationToken verificationToken) { |
| auto entry = mMap.find(token); |
| if (entry == mMap.end()) return; |
| |
| entry->second.verificationToken = std::move(verificationToken); |
| } |
| |
| std::vector<sp<IBinder>> OperationMap::getOperationsForToken(const sp<IBinder>& appToken) { |
| auto appEntry = mAppTokenMap.find(appToken); |
| if (appEntry == mAppTokenMap.end()) return {}; |
| return appEntry->second; |
| } |
| |
| } // namespace keystore |