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/*
* Copyright (C) 2017 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.settingslib.development;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.os.SystemProperties;
import android.support.annotation.VisibleForTesting;
import android.support.v4.content.LocalBroadcastManager;
import android.support.v7.preference.ListPreference;
import android.support.v7.preference.Preference;
import android.support.v7.preference.PreferenceScreen;
import android.text.TextUtils;
import com.android.settingslib.R;
import com.android.settingslib.core.ConfirmationDialogController;
import com.android.settingslib.core.lifecycle.Lifecycle;
import com.android.settingslib.core.lifecycle.LifecycleObserver;
import com.android.settingslib.core.lifecycle.events.OnCreate;
import com.android.settingslib.core.lifecycle.events.OnDestroy;
public abstract class AbstractLogpersistPreferenceController extends
DeveloperOptionsPreferenceController implements Preference.OnPreferenceChangeListener,
LifecycleObserver, OnCreate, OnDestroy, ConfirmationDialogController {
private static final String SELECT_LOGPERSIST_KEY = "select_logpersist";
private static final String SELECT_LOGPERSIST_PROPERTY = "persist.logd.logpersistd";
@VisibleForTesting
static final String ACTUAL_LOGPERSIST_PROPERTY = "logd.logpersistd";
@VisibleForTesting
static final String SELECT_LOGPERSIST_PROPERTY_SERVICE = "logcatd";
private static final String SELECT_LOGPERSIST_PROPERTY_CLEAR = "clear";
private static final String SELECT_LOGPERSIST_PROPERTY_STOP = "stop";
private static final String SELECT_LOGPERSIST_PROPERTY_BUFFER =
"persist.logd.logpersistd.buffer";
@VisibleForTesting
static final String ACTUAL_LOGPERSIST_PROPERTY_BUFFER = "logd.logpersistd.buffer";
private static final String ACTUAL_LOGPERSIST_PROPERTY_ENABLE = "logd.logpersistd.enable";
private ListPreference mLogpersist;
private boolean mLogpersistCleared;
private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
final String currentValue = intent.getStringExtra(
AbstractLogdSizePreferenceController.EXTRA_CURRENT_LOGD_VALUE);
onLogdSizeSettingUpdate(currentValue);
}
};
public AbstractLogpersistPreferenceController(Context context, Lifecycle lifecycle) {
super(context);
if (isAvailable() && lifecycle != null) {
lifecycle.addObserver(this);
}
}
@Override
public boolean isAvailable() {
return TextUtils.equals(SystemProperties.get("ro.debuggable", "0"), "1");
}
@Override
public String getPreferenceKey() {
return SELECT_LOGPERSIST_KEY;
}
@Override
public void displayPreference(PreferenceScreen screen) {
super.displayPreference(screen);
if (isAvailable()) {
mLogpersist = (ListPreference) screen.findPreference(SELECT_LOGPERSIST_KEY);
}
}
@Override
public boolean onPreferenceChange(Preference preference, Object newValue) {
if (preference == mLogpersist) {
writeLogpersistOption(newValue, false);
return true;
} else {
return false;
}
}
@Override
public void onCreate(Bundle savedInstanceState) {
LocalBroadcastManager.getInstance(mContext).registerReceiver(mReceiver,
new IntentFilter(AbstractLogdSizePreferenceController.ACTION_LOGD_SIZE_UPDATED));
}
@Override
public void onDestroy() {
LocalBroadcastManager.getInstance(mContext).unregisterReceiver(mReceiver);
}
public void enablePreference(boolean enabled) {
if (isAvailable()) {
mLogpersist.setEnabled(enabled);
}
}
private void onLogdSizeSettingUpdate(String currentValue) {
if (mLogpersist != null) {
String currentLogpersistEnable
= SystemProperties.get(ACTUAL_LOGPERSIST_PROPERTY_ENABLE);
if ((currentLogpersistEnable == null)
|| !currentLogpersistEnable.equals("true")
|| currentValue.equals(
AbstractLogdSizePreferenceController.SELECT_LOGD_OFF_SIZE_MARKER_VALUE)) {
writeLogpersistOption(null, true);
mLogpersist.setEnabled(false);
} else if (DevelopmentSettingsEnabler.isDevelopmentSettingsEnabled(mContext)) {
mLogpersist.setEnabled(true);
}
}
}
public void updateLogpersistValues() {
if (mLogpersist == null) {
return;
}
String currentValue = SystemProperties.get(ACTUAL_LOGPERSIST_PROPERTY);
if (currentValue == null) {
currentValue = "";
}
String currentBuffers = SystemProperties.get(ACTUAL_LOGPERSIST_PROPERTY_BUFFER);
if ((currentBuffers == null) || (currentBuffers.length() == 0)) {
currentBuffers = "all";
}
int index = 0;
if (currentValue.equals(SELECT_LOGPERSIST_PROPERTY_SERVICE)) {
index = 1;
if (currentBuffers.equals("kernel")) {
index = 3;
} else if (!currentBuffers.equals("all") &&
!currentBuffers.contains("radio") &&
currentBuffers.contains("security") &&
currentBuffers.contains("kernel")) {
index = 2;
if (!currentBuffers.contains("default")) {
String[] contains = {"main", "events", "system", "crash"};
for (String type : contains) {
if (!currentBuffers.contains(type)) {
index = 1;
break;
}
}
}
}
}
mLogpersist.setValue(
mContext.getResources().getStringArray(R.array.select_logpersist_values)[index]);
mLogpersist.setSummary(
mContext.getResources().getStringArray(R.array.select_logpersist_summaries)[index]);
if (index != 0) {
mLogpersistCleared = false;
} else if (!mLogpersistCleared) {
// would File.delete() directly but need to switch uid/gid to access
SystemProperties.set(ACTUAL_LOGPERSIST_PROPERTY, SELECT_LOGPERSIST_PROPERTY_CLEAR);
SystemPropPoker.getInstance().poke();
mLogpersistCleared = true;
}
}
protected void setLogpersistOff(boolean update) {
SystemProperties.set(SELECT_LOGPERSIST_PROPERTY_BUFFER, "");
// deal with trampoline of empty properties
SystemProperties.set(ACTUAL_LOGPERSIST_PROPERTY_BUFFER, "");
SystemProperties.set(SELECT_LOGPERSIST_PROPERTY, "");
SystemProperties.set(ACTUAL_LOGPERSIST_PROPERTY,
update ? "" : SELECT_LOGPERSIST_PROPERTY_STOP);
SystemPropPoker.getInstance().poke();
if (update) {
updateLogpersistValues();
} else {
for (int i = 0; i < 3; i++) {
String currentValue = SystemProperties.get(ACTUAL_LOGPERSIST_PROPERTY);
if ((currentValue == null) || currentValue.equals("")) {
break;
}
try {
Thread.sleep(100);
} catch (InterruptedException e) {
// Ignore
}
}
}
}
public void writeLogpersistOption(Object newValue, boolean skipWarning) {
if (mLogpersist == null) {
return;
}
String currentTag = SystemProperties.get(
AbstractLogdSizePreferenceController.SELECT_LOGD_TAG_PROPERTY);
if ((currentTag != null) && currentTag.startsWith(
AbstractLogdSizePreferenceController.SELECT_LOGD_TAG_SILENCE)) {
newValue = null;
skipWarning = true;
}
if ((newValue == null) || newValue.toString().equals("")) {
if (skipWarning) {
mLogpersistCleared = false;
} else if (!mLogpersistCleared) {
// if transitioning from on to off, pop up an are you sure?
String currentValue = SystemProperties.get(ACTUAL_LOGPERSIST_PROPERTY);
if ((currentValue != null) &&
currentValue.equals(SELECT_LOGPERSIST_PROPERTY_SERVICE)) {
showConfirmationDialog(mLogpersist);
return;
}
}
setLogpersistOff(true);
return;
}
String currentBuffer = SystemProperties.get(ACTUAL_LOGPERSIST_PROPERTY_BUFFER);
if ((currentBuffer != null) && !currentBuffer.equals(newValue.toString())) {
setLogpersistOff(false);
}
SystemProperties.set(SELECT_LOGPERSIST_PROPERTY_BUFFER, newValue.toString());
SystemProperties.set(SELECT_LOGPERSIST_PROPERTY, SELECT_LOGPERSIST_PROPERTY_SERVICE);
SystemPropPoker.getInstance().poke();
for (int i = 0; i < 3; i++) {
String currentValue = SystemProperties.get(ACTUAL_LOGPERSIST_PROPERTY);
if ((currentValue != null)
&& currentValue.equals(SELECT_LOGPERSIST_PROPERTY_SERVICE)) {
break;
}
try {
Thread.sleep(100);
} catch (InterruptedException e) {
// Ignore
}
}
updateLogpersistValues();
}
}
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