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