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/*
* Copyright (C) 2019 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.
*/
package com.android.internal.os;
import android.metrics.LogMaker;
import android.os.Process;
import com.android.internal.logging.MetricsLogger;
import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
import com.android.internal.util.FrameworkStatsLog;
import dalvik.system.VMRuntime.HiddenApiUsageLogger;
class StatsdHiddenApiUsageLogger implements HiddenApiUsageLogger {
private final MetricsLogger mMetricsLogger = new MetricsLogger();
private static final StatsdHiddenApiUsageLogger sInstance = new StatsdHiddenApiUsageLogger();
private int mHiddenApiAccessLogSampleRate = 0;
private int mHiddenApiAccessStatslogSampleRate = 0;
static void setHiddenApiAccessLogSampleRates(int sampleRate, int newSampleRate) {
sInstance.mHiddenApiAccessLogSampleRate = sampleRate;
sInstance.mHiddenApiAccessStatslogSampleRate = newSampleRate;
}
static StatsdHiddenApiUsageLogger getInstance() {
return StatsdHiddenApiUsageLogger.sInstance;
}
public void hiddenApiUsed(int sampledValue, String packageName, String signature,
int accessMethod, boolean accessDenied) {
if (sampledValue < mHiddenApiAccessLogSampleRate) {
logUsage(packageName, signature, accessMethod, accessDenied);
}
if (sampledValue < mHiddenApiAccessStatslogSampleRate) {
newLogUsage(signature, accessMethod, accessDenied);
}
}
private void logUsage(String packageName, String signature, int accessMethod,
boolean accessDenied) {
int accessMethodMetric = HiddenApiUsageLogger.ACCESS_METHOD_NONE;
switch(accessMethod) {
case HiddenApiUsageLogger.ACCESS_METHOD_NONE:
accessMethodMetric = MetricsEvent.ACCESS_METHOD_NONE;
break;
case HiddenApiUsageLogger.ACCESS_METHOD_REFLECTION:
accessMethodMetric = MetricsEvent.ACCESS_METHOD_REFLECTION;
break;
case HiddenApiUsageLogger.ACCESS_METHOD_JNI:
accessMethodMetric = MetricsEvent.ACCESS_METHOD_JNI;
break;
case HiddenApiUsageLogger.ACCESS_METHOD_LINKING:
accessMethodMetric = MetricsEvent.ACCESS_METHOD_LINKING;
break;
}
LogMaker logMaker = new LogMaker(MetricsEvent.ACTION_HIDDEN_API_ACCESSED)
.setPackageName(packageName)
.addTaggedData(MetricsEvent.FIELD_HIDDEN_API_SIGNATURE, signature)
.addTaggedData(MetricsEvent.FIELD_HIDDEN_API_ACCESS_METHOD,
accessMethodMetric);
if (accessDenied) {
logMaker.addTaggedData(MetricsEvent.FIELD_HIDDEN_API_ACCESS_DENIED, 1);
}
mMetricsLogger.write(logMaker);
}
private void newLogUsage(String signature, int accessMethod, boolean accessDenied) {
int accessMethodProto = FrameworkStatsLog.HIDDEN_API_USED__ACCESS_METHOD__NONE;
switch(accessMethod) {
case HiddenApiUsageLogger.ACCESS_METHOD_NONE:
accessMethodProto = FrameworkStatsLog.HIDDEN_API_USED__ACCESS_METHOD__NONE;
break;
case HiddenApiUsageLogger.ACCESS_METHOD_REFLECTION:
accessMethodProto = FrameworkStatsLog.HIDDEN_API_USED__ACCESS_METHOD__REFLECTION;
break;
case HiddenApiUsageLogger.ACCESS_METHOD_JNI:
accessMethodProto = FrameworkStatsLog.HIDDEN_API_USED__ACCESS_METHOD__JNI;
break;
case HiddenApiUsageLogger.ACCESS_METHOD_LINKING:
accessMethodProto = FrameworkStatsLog.HIDDEN_API_USED__ACCESS_METHOD__LINKING;
break;
}
int uid = Process.myUid();
FrameworkStatsLog.write(FrameworkStatsLog.HIDDEN_API_USED, uid, signature,
accessMethodProto, accessDenied);
}
}
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