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Merge "Don't touch the VFS during window relayout." into gingerbread

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This commit is contained in:
Brad Fitzpatrick
2010-08-23 19:38:16 -07:00
committed by Android (Google) Code Review
parent 97b5b76502 9088100518
commit d132892a75
1 changed files with 36 additions and 31 deletions
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67
core/java/com/android/internal/widget/LockPatternUtils.java
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@@ -19,6 +19,7 @@ package com.android.internal.widget;
import android.app.admin.DevicePolicyManager;
import android.content.ContentResolver;
import android.content.Context;
import android.os.FileObserver;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.os.SystemClock;
@@ -33,6 +34,7 @@ import com.android.internal.R;
import com.android.internal.telephony.ITelephony;
import com.google.android.collect.Lists;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.RandomAccessFile;
@@ -40,6 +42,7 @@ import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.atomic.AtomicBoolean;
/**
* Utilities for the lock patten and its settings.
@@ -48,8 +51,9 @@ public class LockPatternUtils {
private static final String TAG = "LockPatternUtils";
private static final String LOCK_PATTERN_FILE = "/system/gesture.key";
private static final String LOCK_PASSWORD_FILE = "/system/password.key";
private static final String SYSTEM_DIRECTORY = "/system/";
private static final String LOCK_PATTERN_FILE = "gesture.key";
private static final String LOCK_PASSWORD_FILE = "password.key";
/**
* The maximum number of incorrect attempts before the user is prevented
@@ -98,6 +102,10 @@ public class LockPatternUtils {
private static String sLockPatternFilename;
private static String sLockPasswordFilename;
private static final AtomicBoolean sHaveNonZeroPatternFile = new AtomicBoolean(false);
private static final AtomicBoolean sHaveNonZeroPasswordFile = new AtomicBoolean(false);
private static FileObserver sPasswordObserver;
public DevicePolicyManager getDevicePolicyManager() {
if (mDevicePolicyManager == null) {
mDevicePolicyManager =
@@ -115,14 +123,31 @@ public class LockPatternUtils {
public LockPatternUtils(Context context) {
mContext = context;
mContentResolver = context.getContentResolver();
// Initialize the location of gesture lock file
if (sLockPatternFilename == null) {
sLockPatternFilename = android.os.Environment.getDataDirectory()
.getAbsolutePath() + LOCK_PATTERN_FILE;
sLockPasswordFilename = android.os.Environment.getDataDirectory()
.getAbsolutePath() + LOCK_PASSWORD_FILE;
}
// Initialize the location of gesture & PIN lock files
if (sLockPatternFilename == null) {
String dataSystemDirectory =
android.os.Environment.getDataDirectory().getAbsolutePath() +
SYSTEM_DIRECTORY;
sLockPatternFilename = dataSystemDirectory + LOCK_PATTERN_FILE;
sLockPasswordFilename = dataSystemDirectory + LOCK_PASSWORD_FILE;
sHaveNonZeroPatternFile.set(new File(sLockPatternFilename).length() > 0);
sHaveNonZeroPasswordFile.set(new File(sLockPasswordFilename).length() > 0);
int fileObserverMask = FileObserver.CLOSE_WRITE | FileObserver.DELETE |
FileObserver.MOVED_TO | FileObserver.CREATE;
sPasswordObserver = new FileObserver(dataSystemDirectory, fileObserverMask) {
public void onEvent(int event, String path) {
if (LOCK_PATTERN_FILE.equals(path)) {
Log.d(TAG, "lock pattern file changed");
sHaveNonZeroPatternFile.set(new File(sLockPatternFilename).length() > 0);
} else if (LOCK_PASSWORD_FILE.equals(path)) {
Log.d(TAG, "lock password file changed");
sHaveNonZeroPasswordFile.set(new File(sLockPasswordFilename).length() > 0);
}
}
};
sPasswordObserver.startWatching();
}
}
public int getRequestedMinimumPasswordLength() {
@@ -201,32 +226,12 @@ public class LockPatternUtils {
}
}
/**
* Checks to see if the given file exists and contains any data. Returns true if it does,
* false otherwise.
* @param filename
* @return true if file exists and is non-empty.
*/
private boolean nonEmptyFileExists(String filename) {
try {
// Check if we can read a byte from the file
RandomAccessFile raf = new RandomAccessFile(filename, "r");
raf.readByte();
raf.close();
return true;
} catch (FileNotFoundException fnfe) {
return false;
} catch (IOException ioe) {
return false;
}
}
/**
* Check to see if the user has stored a lock pattern.
* @return Whether a saved pattern exists.
*/
public boolean savedPatternExists() {
return nonEmptyFileExists(sLockPatternFilename);
return sHaveNonZeroPatternFile.get();
}
/**
@@ -234,7 +239,7 @@ public class LockPatternUtils {
* @return Whether a saved pattern exists.
*/
public boolean savedPasswordExists() {
return nonEmptyFileExists(sLockPasswordFilename);
return sHaveNonZeroPasswordFile.get();
}
/**