FingerprintUtils: Migrate old fp config xml to new one on HIDL/AIDL switch (a53cdbd6) · Commits · e / os / android_frameworks_base

services/core/java/com/android/server/biometrics/sensors/fingerprint/FingerprintUtils.java

+24 −1

Original line number	Diff line number	Diff line
		@@ -31,12 +31,15 @@ import android.annotation.Nullable;
		import android.content.Context;
		import android.hardware.biometrics.fingerprint.V2_1.FingerprintError;
		import android.hardware.fingerprint.Fingerprint;
		import android.os.Environment;
		import android.text.TextUtils;
		import android.util.Log;
		import android.util.SparseArray;

		import com.android.internal.annotations.GuardedBy;
		import com.android.server.biometrics.sensors.BiometricUtils;

		import java.io.File;
		import java.util.List;

		/**
		@@ -48,10 +51,11 @@ public class FingerprintUtils implements BiometricUtils<Fingerprint> {
		// Map<SensorId, FingerprintUtils>
		private static SparseArray<FingerprintUtils> sInstances;
		private static final String LEGACY_FINGERPRINT_FILE = "settings_fingerprint.xml";
		private static final String TAG = "FingerprintUtils";

		@GuardedBy("this")
		private final SparseArray<FingerprintUserState> mUserStates;
		private final String mFileName;
		private String mFileName;

		/**
		* Retrieves an instance for the specified sensorId.
		@@ -160,6 +164,25 @@ public class FingerprintUtils implements BiometricUtils<Fingerprint> {
		synchronized (this) {
		FingerprintUserState state = mUserStates.get(userId);
		if (state == null) {
		if (mFileName.matches("settings_fingerprint_\\d+.xml")) {
		// Check if this file is empty or does not exist
		File legacyFile = new File(Environment.getUserSystemDirectory(userId),
		LEGACY_FINGERPRINT_FILE);
		File file = new File(Environment.getUserSystemDirectory(userId), mFileName);
		if (legacyFile.length() > 0 && file.length() == 0) {
		Log.i(TAG, "Migration needed for " + mFileName);
		if (file.exists()) {
		// File exists and the length is 0, delete it
		if (!file.delete()) {
		Log.i(TAG, "Failed to delete empty file: " + file);
		}
		}
		if (!legacyFile.renameTo(file)) {
		Log.i(TAG, "Failed to rename file: " + legacyFile + " to " + file);
		mFileName = LEGACY_FINGERPRINT_FILE;
		}
		}
		}
		state = new FingerprintUserState(ctx, userId, mFileName);
		mUserStates.put(userId, state);
		}