| /* |
| ** Copyright 2018, 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. |
| */ |
| |
| #include <unistd.h> |
| |
| #define LOG_TAG "wait_for_strongbox" |
| #include <android-base/logging.h> |
| |
| #include <keymasterV4_1/Keymaster.h> |
| |
| using android::hardware::keymaster::V4_1::SecurityLevel; |
| using android::hardware::keymaster::V4_1::support::Keymaster; |
| |
| useconds_t kWaitTimeMicroseconds = 1 * 1000; // 1 milliseconds |
| |
| int main() { |
| for (unsigned cycleCount = 0; /* Forever */; ++cycleCount) { |
| auto keymasters = Keymaster::enumerateAvailableDevices(); |
| |
| bool foundStrongBox = false; |
| bool foundTee = false; |
| for (auto &dev : keymasters) { |
| SecurityLevel securityLevel = dev->halVersion().securityLevel; |
| uint8_t majorVersion = dev->halVersion().majorVersion; |
| if (securityLevel == SecurityLevel::STRONGBOX && majorVersion == 4) { |
| foundStrongBox = true; |
| } |
| if (securityLevel == SecurityLevel::TRUSTED_ENVIRONMENT && majorVersion == 4) { |
| foundTee = true; |
| } |
| } |
| |
| if (foundTee && foundStrongBox) { |
| return 0; |
| } |
| if (cycleCount % 10 == 1) { |
| if (!foundStrongBox) { |
| LOG(WARNING) << "Still waiting for StrongBox Keymaster"; |
| } |
| if (!foundTee) { |
| LOG(WARNING) << "Still waiting for TEE Keymaster"; |
| } |
| } |
| usleep(kWaitTimeMicroseconds); |
| } |
| } |