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Fix exploit where can hide the fact that a location was mocked

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am: a206a0f17e

Change-Id: Ib3af056919a4b909d3d11dd3fe2b46eaa7cdf0f4
This commit is contained in:
Tom O'Neill
2016-12-22 16:58:33 +00:00
committed by android-build-merger
parent a5affb045e a206a0f17e
commit d417e54872
1 changed files with 16 additions and 1 deletions
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17
services/java/com/android/server/LocationManagerService.java
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@@ -57,6 +57,8 @@ import android.os.SystemClock;
import android.os.UserHandle;
import android.os.WorkSource;
import android.provider.Settings;
import android.text.TextUtils;
import android.util.EventLog;
import android.util.Log;
import android.util.Slog;
import com.android.internal.content.PackageMonitor;
@@ -2247,9 +2249,22 @@ public class LocationManagerService extends ILocationManager.Stub {
if (mockProvider == null) {
throw new IllegalArgumentException("Provider \"" + provider + "\" unknown");
}
// Ensure that the location is marked as being mock. There's some logic to do this in
// handleLocationChanged(), but it fails if loc has the wrong provider (bug 33091107).
Location mock = new Location(loc);
mock.setIsFromMockProvider(true);
if (!TextUtils.isEmpty(loc.getProvider()) && !provider.equals(loc.getProvider())) {
// The location has an explicit provider that is different from the mock provider
// name. The caller may be trying to fool us via bug 33091107.
EventLog.writeEvent(0x534e4554, "33091107", Binder.getCallingUid(),
provider + "!=" + loc.getProvider());
}
// clear calling identity so INSTALL_LOCATION_PROVIDER permission is not required
long identity = Binder.clearCallingIdentity();
mockProvider.setLocation(loc);
mockProvider.setLocation(mock);
Binder.restoreCallingIdentity(identity);
}
}