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Merge "Restrict device wakeup via PowerManager.ACQUIRE_CAUSES_WAKEUP." into tm-dev

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This commit is contained in:
Philip Junker
2022-03-24 10:02:49 +00:00
committed by Android (Google) Code Review
parent b5576b6110 f7c7f99619
commit 244a90bfe1
1 changed files with 63 additions and 6 deletions
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69
services/core/java/com/android/server/power/PowerManagerService.java
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@@ -40,12 +40,14 @@ import android.annotation.Nullable;
import android.annotation.RequiresPermission;
import android.annotation.UserIdInt;
import android.app.ActivityManager;
import android.app.AppOpsManager;
import android.app.SynchronousUserSwitchObserver;
import android.content.BroadcastReceiver;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.content.res.Resources;
import android.database.ContentObserver;
@@ -1454,6 +1456,15 @@ public final class PowerManagerService extends SystemService
private void acquireWakeLockInternal(IBinder lock, int displayId, int flags, String tag,
String packageName, WorkSource ws, String historyTag, int uid, int pid,
@Nullable IWakeLockCallback callback) {
boolean isCallerPrivileged = false;
try {
ApplicationInfo appInfo = mContext.getPackageManager().getApplicationInfo(packageName,
PackageManager.ApplicationInfoFlags.of(0));
isCallerPrivileged = appInfo.uid == uid && appInfo.isPrivilegedApp();
} catch (PackageManager.NameNotFoundException e) {
// assume app is not privileged
}
synchronized (mLock) {
if (displayId != Display.INVALID_DISPLAY) {
final DisplayInfo displayInfo =
@@ -1500,7 +1511,7 @@ public final class PowerManagerService extends SystemService
notifyAcquire = true;
}
applyWakeLockFlagsOnAcquireLocked(wakeLock, uid);
applyWakeLockFlagsOnAcquireLocked(wakeLock, isCallerPrivileged);
mDirty |= DIRTY_WAKE_LOCKS;
updatePowerStateLocked();
if (notifyAcquire) {
@@ -1539,8 +1550,34 @@ public final class PowerManagerService extends SystemService
return null;
}
private boolean isAcquireCausesWakeupFlagAllowed(String opPackageName, int opUid,
boolean isCallerPrivileged) {
if (opPackageName == null) {
return false;
}
if (isCallerPrivileged) {
if (DEBUG_SPEW) {
Slog.d(TAG, "Allowing device wake-up for privileged app, call attributed to "
+ opPackageName);
}
return true;
}
if (mContext.getSystemService(AppOpsManager.class).checkOpNoThrow(
AppOpsManager.OP_TURN_SCREEN_ON, opUid, opPackageName)
== AppOpsManager.MODE_ALLOWED) {
if (DEBUG_SPEW) {
Slog.d(TAG, "Allowing device wake-up for app with special access " + opPackageName);
}
return true;
}
if (DEBUG_SPEW) {
Slog.d(TAG, "Not allowing device wake-up for " + opPackageName);
}
return false;
}
@GuardedBy("mLock")
private void applyWakeLockFlagsOnAcquireLocked(WakeLock wakeLock, int uid) {
private void applyWakeLockFlagsOnAcquireLocked(WakeLock wakeLock, boolean isCallerPrivileged) {
if ((wakeLock.mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0
&& isScreenLock(wakeLock)) {
String opPackageName;
@@ -1560,10 +1597,30 @@ public final class PowerManagerService extends SystemService
opPackageName = wakeLock.mPackageName;
opUid = wakeLock.mOwnerUid;
}
for (int idx = 0; idx < mPowerGroups.size(); idx++) {
wakePowerGroupLocked(mPowerGroups.valueAt(idx), mClock.uptimeMillis(),
PowerManager.WAKE_REASON_APPLICATION, wakeLock.mTag, opUid, opPackageName,
opUid);
Integer powerGroupId = wakeLock.getPowerGroupId();
// powerGroupId is null if the wakelock associated display is no longer available
if (powerGroupId != null && isAcquireCausesWakeupFlagAllowed(opPackageName, opUid,
isCallerPrivileged)) {
if (powerGroupId == Display.INVALID_DISPLAY_GROUP) {
// wake up all display groups
if (DEBUG_SPEW) {
Slog.d(TAG, "Waking up all power groups");
}
for (int idx = 0; idx < mPowerGroups.size(); idx++) {
wakePowerGroupLocked(mPowerGroups.valueAt(idx), mClock.uptimeMillis(),
PowerManager.WAKE_REASON_APPLICATION, wakeLock.mTag, opUid,
opPackageName, opUid);
}
return;
}
if (mPowerGroups.contains(powerGroupId)) {
if (DEBUG_SPEW) {
Slog.d(TAG, "Waking up power group " + powerGroupId);
}
wakePowerGroupLocked(mPowerGroups.get(powerGroupId), mClock.uptimeMillis(),
PowerManager.WAKE_REASON_APPLICATION, wakeLock.mTag, opUid,
opPackageName, opUid);
}
}
}
}