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Code Issues Releases Wiki Activity

implemented Fingerprint QuickUnlock

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This commit is contained in:
Philipp Crocoll 2016-01-02 21:29:26 +01:00
parent 756f6971f1
commit b3416410f0
3 changed files with 153 additions and 16 deletions
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8
src/keepass2android/PasswordActivity.cs
View File

@ -21,6 +21,7 @@ using System.IO;
using System.Threading.Tasks;
using System.Xml;
using System.Xml.Serialization;
using Android;
using Android.App;
using Android.Content;
using Android.Database;
@ -908,7 +909,8 @@ namespace keepass2android
this._measureArgs = args;
};
RequestPermissions(new[] { Android.Manifest.Permission.UseFingerprint }, FingerprintPermissionRequestCode);
if ((int)Build.VERSION.SdkInt >= 23)
RequestPermissions(new[] { Manifest.Permission.UseFingerprint }, FingerprintPermissionRequestCode);
}
const int FingerprintPermissionRequestCode = 0;
@ -1600,10 +1602,6 @@ namespace keepass2android
outState.PutString(OtpInfoKey, sw.ToString());
}
//more OTP TODO:
// * Caching of aux file
// * -> implement IFileStorage in JavaFileStorage based on ListFiles
// * -> Sync
}
protected override void OnNewIntent(Intent intent)

151
src/keepass2android/QuickUnlock.cs
View File

@ -16,6 +16,7 @@ This file is part of Keepass2Android, Copyright 2013 Philipp Crocoll.
*/
using System;
using Android;
using Android.App;
using Android.Content;
using Android.OS;
@ -36,11 +37,15 @@ namespace keepass2android
WindowSoftInputMode = SoftInput.AdjustResize,
MainLauncher = false,
Theme = "@style/MyTheme_Blue")]
public class QuickUnlock : LifecycleDebugActivity
public class QuickUnlock : LifecycleDebugActivity, IFingerprintAuthCallback
{
private IOConnectionInfo _ioc;
private QuickUnlockBroadcastReceiver _intentReceiver;
private ActivityDesign _design;
private bool _fingerprintPermissionGranted;
private FingerprintDecryption _fingerprintDec;
private int _quickUnlockLength;
private const int FingerprintPermissionRequestCode = 0;
public QuickUnlock()
{
@ -100,18 +105,18 @@ namespace keepass2android
TextView txtLabel = (TextView) FindViewById(Resource.Id.QuickUnlock_label);
int quickUnlockLength = App.Kp2a.QuickUnlockKeyLength;
_quickUnlockLength = App.Kp2a.QuickUnlockKeyLength;
txtLabel.Text = GetString(Resource.String.QuickUnlock_label, new Java.Lang.Object[] {quickUnlockLength});
txtLabel.Text = GetString(Resource.String.QuickUnlock_label, new Java.Lang.Object[] {_quickUnlockLength});
EditText pwd = (EditText) FindViewById(Resource.Id.QuickUnlock_password);
pwd.SetEms(quickUnlockLength);
pwd.SetEms(_quickUnlockLength);
Button btnUnlock = (Button) FindViewById(Resource.Id.QuickUnlock_button);
btnUnlock.Click += (object sender, EventArgs e) =>
{
OnUnlock(quickUnlockLength, pwd);
OnUnlock(_quickUnlockLength, pwd);
};
@ -126,23 +131,124 @@ namespace keepass2android
pwd.EditorAction += (sender, args) =>
{
if ((args.ActionId == ImeAction.Done) || ((args.ActionId == ImeAction.ImeNull) && (args.Event.Action == KeyEventActions.Down)))
OnUnlock(quickUnlockLength, pwd);
OnUnlock(_quickUnlockLength, pwd);
};
_intentReceiver = new QuickUnlockBroadcastReceiver(this);
IntentFilter filter = new IntentFilter();
filter.AddAction(Intents.DatabaseLocked);
RegisterReceiver(_intentReceiver, filter);
if ((int)Build.VERSION.SdkInt >= 23)
RequestPermissions(new[] { Manifest.Permission.UseFingerprint }, FingerprintPermissionRequestCode);
}
public override void OnRequestPermissionsResult(int requestCode, string[] permissions, Permission[] grantResults)
{
if (requestCode == FingerprintPermissionRequestCode && grantResults[0] == Permission.Granted)
{
var btn = FindViewById<ImageButton>(Resource.Id.fingerprintbtn);
btn.Click += (sender, args) =>
{
AlertDialog.Builder b = new AlertDialog.Builder(this);
b.SetTitle(Resource.String.fingerprint_prefs);
b.SetMessage(btn.Tag.ToString());
b.SetPositiveButton(Android.Resource.String.Ok, (o, eventArgs) => ((Dialog)o).Dismiss());
b.Show();
};
_fingerprintPermissionGranted = true;
}
}
public void OnFingerprintError(string message)
{
var btn = FindViewById<ImageButton>(Resource.Id.fingerprintbtn);
btn.SetImageResource(Resource.Drawable.ic_fingerprint_error);
btn.PostDelayed(() =>
{
btn.SetImageResource(Resource.Drawable.ic_fp_40px);
btn.Tag = GetString(Resource.String.fingerprint_unlock_hint);
}, 1300);
Toast.MakeText(this, message, ToastLength.Long).Show();
}
public void OnFingerprintAuthSucceeded()
{
var btn = FindViewById<ImageButton>(Resource.Id.fingerprintbtn);
btn.SetImageResource(Resource.Drawable.ic_fingerprint_success);
EditText pwd = (EditText)FindViewById(Resource.Id.QuickUnlock_password);
pwd.Text = ExpectedPasswordPart;
btn.PostDelayed(() =>
{
App.Kp2a.UnlockDatabase();
Finish();
}, 500);
}
private void InitFingerprintUnlock()
{
var btn = FindViewById<ImageButton>(Resource.Id.fingerprintbtn);
try
{
FingerprintUnlockMode um;
Enum.TryParse(PreferenceManager.GetDefaultSharedPreferences(this).GetString(App.Kp2a.GetDb().CurrentFingerprintModePrefKey, ""), out um);
btn.Visibility = (um == FingerprintUnlockMode.FullUnlock) ? ViewStates.Visible : ViewStates.Gone;
if (um != FingerprintUnlockMode.FullUnlock)
{
return;
}
FingerprintModule fpModule = new FingerprintModule(this);
_fingerprintDec = new FingerprintDecryption(fpModule, App.Kp2a.GetDb().CurrentFingerprintPrefKey, this,
App.Kp2a.GetDb().CurrentFingerprintPrefKey);
btn.Tag = GetString(Resource.String.fingerprint_unlock_hint);
if (_fingerprintDec.InitCipher())
{
btn.SetImageResource(Resource.Drawable.ic_fp_40px);
_fingerprintDec.StartListening(new FingerprintAuthCallbackAdapter(this, this));
}
else
{
//key invalidated permanently
btn.SetImageResource(Resource.Drawable.ic_fingerprint_error);
btn.Tag = GetString(Resource.String.fingerprint_unlock_failed);
_fingerprintDec = null;
ClearFingerprintUnlockData();
}
}
catch (Exception e)
{
btn.SetImageResource(Resource.Drawable.ic_fingerprint_error);
btn.Tag = "Error initializing Fingerprint Unlock: " + e;
_fingerprintDec = null;
}
}
private void ClearFingerprintUnlockData()
{
ISharedPreferencesEditor edit = PreferenceManager.GetDefaultSharedPreferences(this).Edit();
edit.PutString(App.Kp2a.GetDb().CurrentFingerprintPrefKey, "");
edit.PutString(App.Kp2a.GetDb().CurrentFingerprintModePrefKey, FingerprintUnlockMode.Disabled.ToString());
edit.Commit();
}
private void OnUnlock(int quickUnlockLength, EditText pwd)
{
KcpPassword kcpPassword = (KcpPassword) App.Kp2a.GetDb().KpDatabase.MasterKey.GetUserKey(typeof (KcpPassword));
String password = kcpPassword.Password.ReadString();
String expectedPasswordPart = password.Substring(Math.Max(0, password.Length - quickUnlockLength),
Math.Min(password.Length, quickUnlockLength));
var expectedPasswordPart = ExpectedPasswordPart;
if (pwd.Text == expectedPasswordPart)
{
App.Kp2a.UnlockDatabase();
@ -155,6 +261,18 @@ namespace keepass2android
Finish();
}
private string ExpectedPasswordPart
{
get
{
KcpPassword kcpPassword = (KcpPassword) App.Kp2a.GetDb().KpDatabase.MasterKey.GetUserKey(typeof (KcpPassword));
String password = kcpPassword.Password.ReadString();
String expectedPasswordPart = password.Substring(Math.Max(0, password.Length - _quickUnlockLength),
Math.Min(password.Length, _quickUnlockLength));
return expectedPasswordPart;
}
}
private void OnLockDatabase()
{
CheckIfUnloaded();
@ -173,6 +291,17 @@ namespace keepass2android
InputMethodManager keyboard = (InputMethodManager) GetSystemService(Context.InputMethodService);
keyboard.ShowSoftInput(pwd, 0);
}, 50);
if (_fingerprintPermissionGranted)
{
InitFingerprintUnlock();
}
else
{
FindViewById<ImageButton>(Resource.Id.fingerprintbtn).Visibility = ViewStates.Gone;
}
}
protected override void OnDestroy()

10
src/keepass2android/Resources/layout/QuickUnlock.xml
View File

@ -138,6 +138,16 @@ android:paddingRight="16dp"
android:textSize="20sp"
android:focusable="true"
android:focusableInTouchMode="true" />
<ImageButton
android:id="@+id/fingerprintbtn"
android:layout_width="32dp"
android:layout_height="32dp"
android:layout_margin="4dp"
android:layout_alignParentBottom="true"
android:src="@drawable/ic_fp_40px"
android:scaleType="fitXY"
android:background="?android:selectableItemBackground" />