keepass2android/src/keepass2android/PasswordActivity.cs

537 lines
15 KiB
C#

/*
This file is part of Keepass2Android, Copyright 2013 Philipp Crocoll. This file is based on Keepassdroid, Copyright Brian Pellin.
Keepass2Android is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
Keepass2Android is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Keepass2Android. If not, see <http://www.gnu.org/licenses/>.
*/
using System;
using System.Threading.Tasks;
using Android.App;
using Android.Content;
using Android.OS;
using Android.Runtime;
using Android.Views;
using Android.Widget;
using Java.Net;
using Android.Preferences;
using Java.IO;
using Android.Text;
using Android.Content.PM;
using KeePassLib.Keys;
using KeePassLib.Serialization;
using KeePassLib.Utility;
using MemoryStream = System.IO.MemoryStream;
namespace keepass2android
{
[Activity (Label = "@string/app_name",
ConfigurationChanges=ConfigChanges.Orientation|ConfigChanges.KeyboardHidden,
Theme="@style/Base")]
public class PasswordActivity : LockingActivity {
bool _showPassword;
public const String KeyDefaultFilename = "defaultFileName";
public const String KeyFilename = "fileName";
private const String KeyKeyfile = "keyFile";
private const String KeyServerusername = "serverCredUser";
private const String KeyServerpassword = "serverCredPwd";
private const String KeyServercredmode = "serverCredRememberMode";
private const String ViewIntent = "android.intent.action.VIEW";
private Task<MemoryStream> _loadDbTask;
private IOConnectionInfo _ioConnection;
private String _keyFile;
private bool _rememberKeyfile;
ISharedPreferences _prefs;
public PasswordActivity (IntPtr javaReference, JniHandleOwnership transfer)
: base(javaReference, transfer)
{
}
public PasswordActivity()
{
}
static void PutIoConnectionToIntent(IOConnectionInfo ioc, Intent i)
{
i.PutExtra(KeyFilename, ioc.Path);
i.PutExtra(KeyServerusername, ioc.UserName);
i.PutExtra(KeyServerpassword, ioc.Password);
i.PutExtra(KeyServercredmode, (int)ioc.CredSaveMode);
}
public static void SetIoConnectionFromIntent(IOConnectionInfo ioc, Intent i)
{
ioc.Path = i.GetStringExtra(KeyFilename);
ioc.UserName = i.GetStringExtra(KeyServerusername) ?? "";
ioc.Password = i.GetStringExtra(KeyServerpassword) ?? "";
ioc.CredSaveMode = (IOCredSaveMode)i.GetIntExtra(KeyServercredmode, (int) IOCredSaveMode.NoSave);
}
public static void Launch(Activity act, String fileName, AppTask appTask) {
File dbFile = new File(fileName);
if ( ! dbFile.Exists() ) {
throw new FileNotFoundException();
}
Intent i = new Intent(act, typeof(PasswordActivity));
i.PutExtra(KeyFilename, fileName);
appTask.ToIntent(i);
act.StartActivityForResult(i, 0);
}
public static void Launch(Activity act, String fileName) {
Launch(act, IOConnectionInfo.FromPath(fileName), null);
}
public static void Launch(Activity act, IOConnectionInfo ioc, AppTask appTask)
{
if (ioc.IsLocalFile())
{
Launch(act, ioc.Path, appTask);
return;
}
Intent i = new Intent(act, typeof(PasswordActivity));
PutIoConnectionToIntent(ioc, i);
appTask.ToIntent(i);
act.StartActivityForResult(i, 0);
}
public void LaunchNextActivity()
{
AppTask.AfterUnlockDatabase(this);
}
protected override void OnActivityResult(int requestCode, Result resultCode, Intent data)
{
base.OnActivityResult(requestCode, resultCode, data);
Kp2aLog.Log("PasswordActivity.OnActivityResult "+resultCode+"/"+requestCode);
//NOTE: original code from k eepassdroid used switch ((Android.App.Result)requestCode) { (but doesn't work here, although k eepassdroid works)
switch(resultCode) {
case KeePass.ExitLock:
// The database has already been locked, and the quick unlock screen will be shown if appropriate
break;
case KeePass.ExitForceLock:
App.Kp2a.LockDatabase(false);
break;
case KeePass.ExitForceLockAndChangeDb:
case KeePass.ExitChangeDb: // What's the difference between this and ExitForceLockAndChangeDb?
case KeePass.ExitNormal: // Returned to this screen using the Back key, treat as exiting the database
App.Kp2a.LockDatabase(false);
Finish();
break;
case KeePass.ExitCloseAfterTaskComplete:
SetResult(KeePass.ExitCloseAfterTaskComplete);
Finish();
break;
case KeePass.ExitQuickUnlock:
App.Kp2a.UnlockDatabase();
LaunchNextActivity();
break;
case KeePass.ExitReloadDb:
//if the activity was killed, fill password/keyfile so the user can directly hit load again
if (App.Kp2a.GetDb().Loaded)
{
if (App.Kp2a.GetDb().KpDatabase.MasterKey.ContainsType(typeof(KcpPassword)))
{
KcpPassword kcpPassword = (KcpPassword)App.Kp2a.GetDb().KpDatabase.MasterKey.GetUserKey(typeof(KcpPassword));
String password = kcpPassword.Password.ReadString();
SetEditText(Resource.Id.password, password);
}
if (App.Kp2a.GetDb().KpDatabase.MasterKey.ContainsType(typeof(KcpKeyFile)))
{
KcpKeyFile kcpKeyfile = (KcpKeyFile)App.Kp2a.GetDb().KpDatabase.MasterKey.GetUserKey(typeof(KcpKeyFile));
SetEditText(Resource.Id.pass_keyfile, kcpKeyfile.Path);
}
}
break;
case Result.Ok:
if (requestCode == Intents.RequestCodeFileBrowseForKeyfile) {
string filename = Util.IntentToFilename(data);
if (filename != null) {
if (filename.StartsWith("file://")) {
filename = filename.Substring(7);
}
filename = URLDecoder.Decode(filename);
EditText fn = (EditText) FindViewById(Resource.Id.pass_keyfile);
fn.Text = filename;
}
}
break;
}
}
internal AppTask AppTask;
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
Intent i = Intent;
String action = i.Action;
_prefs = PreferenceManager.GetDefaultSharedPreferences(this);
_rememberKeyfile = _prefs.GetBoolean(GetString(Resource.String.keyfile_key), Resources.GetBoolean(Resource.Boolean.keyfile_default));
_ioConnection = new IOConnectionInfo();
if (action != null && action.Equals(ViewIntent))
{
_ioConnection.Path = i.DataString;
if (! _ioConnection.Path.Substring(0, 7).Equals("file://"))
{
//TODO: this might no longer be required as we can handle http(s) and ftp as well (but we need server credentials therefore)
Toast.MakeText(this, Resource.String.error_can_not_handle_uri, ToastLength.Long).Show();
Finish();
return;
}
_ioConnection.Path = URLDecoder.Decode(_ioConnection.Path.Substring(7));
if (_ioConnection.Path.Length == 0)
{
// No file name
Toast.MakeText(this, Resource.String.FileNotFound, ToastLength.Long).Show();
Finish();
return;
}
File dbFile = new File(_ioConnection.Path);
if (! dbFile.Exists())
{
// File does not exist
Toast.MakeText(this, Resource.String.FileNotFound, ToastLength.Long).Show();
Finish();
return;
}
_keyFile = GetKeyFile(_ioConnection.Path);
} else
{
SetIoConnectionFromIntent(_ioConnection, i);
_keyFile = i.GetStringExtra(KeyKeyfile);
if (string.IsNullOrEmpty(_keyFile))
{
_keyFile = GetKeyFile(_ioConnection.Path);
}
}
AppTask = AppTask.GetTaskInOnCreate(savedInstanceState, Intent);
SetContentView(Resource.Layout.password);
PopulateView();
EditText passwordEdit = FindViewById<EditText>(Resource.Id.password);
passwordEdit.RequestFocus();
Window.SetSoftInputMode(SoftInput.StateVisible);
Button confirmButton = (Button)FindViewById(Resource.Id.pass_ok);
confirmButton.Click += (sender, e) =>
{
String pass = GetEditText(Resource.Id.password);
String key = GetEditText(Resource.Id.pass_keyfile);
if (pass.Length == 0 && key.Length == 0)
{
ErrorMessage(Resource.String.error_nopass);
return;
}
CheckBox cbQuickUnlock = (CheckBox)FindViewById(Resource.Id.enable_quickunlock);
App.Kp2a.SetQuickUnlockEnabled(cbQuickUnlock.Checked);
Handler handler = new Handler();
LoadDb task = new LoadDb(App.Kp2a, _ioConnection, _loadDbTask, pass, key, new AfterLoad(handler, this));
_loadDbTask = null; // prevent accidental re-use
ProgressTask pt = new ProgressTask(App.Kp2a, this, task);
pt.Run();
};
/*CheckBox checkBox = (CheckBox) FindViewById(Resource.Id.show_password);
// Show or hide password
checkBox.CheckedChange += delegate(object sender, CompoundButton.CheckedChangeEventArgs e) {
TextView password = (TextView) FindViewById(Resource.Id.password);
if ( e.IsChecked ) {
password.InputType = InputTypes.ClassText | InputTypes.TextVariationVisiblePassword;
} else {
password.InputType = InputTypes.ClassText | InputTypes.TextVariationPassword;
}
};
*/
ImageButton btnTogglePassword = (ImageButton)FindViewById(Resource.Id.toggle_password);
btnTogglePassword.Click += (sender, e) => {
_showPassword = !_showPassword;
TextView password = (TextView)FindViewById(Resource.Id.password);
if (_showPassword)
{
password.InputType = InputTypes.ClassText | InputTypes.TextVariationVisiblePassword;
} else
{
password.InputType = InputTypes.ClassText | InputTypes.TextVariationPassword;
}
};
CheckBox defaultCheck = (CheckBox)FindViewById(Resource.Id.default_database);
//Don't allow the current file to be the default if we don't have stored credentials
if ((_ioConnection.IsLocalFile() == false) && (_ioConnection.CredSaveMode != IOCredSaveMode.SaveCred))
{
defaultCheck.Enabled = false;
} else
{
defaultCheck.Enabled = true;
}
defaultCheck.CheckedChange += (sender, e) =>
{
String newDefaultFileName;
if (e.IsChecked)
{
newDefaultFileName = _ioConnection.Path;
} else
{
newDefaultFileName = "";
}
ISharedPreferencesEditor editor = _prefs.Edit();
editor.PutString(KeyDefaultFilename, newDefaultFileName);
EditorCompat.Apply(editor);
};
ImageButton browse = (ImageButton)FindViewById(Resource.Id.browse_button);
browse.Click += (sender, evt) =>
{
string filename = null;
if (!String.IsNullOrEmpty(_ioConnection.Path))
{
File keyfile = new File(_ioConnection.Path);
File parent = keyfile.ParentFile;
if (parent != null)
{
filename = parent.AbsolutePath;
}
}
Util.showBrowseDialog(filename, this, Intents.RequestCodeFileBrowseForKeyfile, false);
};
RetrieveSettings();
}
protected override void OnStart()
{
base.OnStart();
if (App.Kp2a.QuickUnlockEnabled && App.Kp2a.QuickLocked)
{
Intent i = new Intent(this, typeof(QuickUnlock));
PutIoConnectionToIntent(_ioConnection, i);
Kp2aLog.Log("Starting QuickUnlock");
StartActivityForResult(i, 0);
}
else
{
// Create task to kick off file loading while the user enters the password
_loadDbTask = Task.Factory.StartNew<MemoryStream>(LoadDbFile);
}
}
private MemoryStream LoadDbFile()
{
Kp2aLog.Log("Pre-loading database file starting");
var fileStorage = App.Kp2a.GetFileStorage(_ioConnection);
var stream = fileStorage.OpenFileForRead(_ioConnection);
var memoryStream = stream as MemoryStream;
if (memoryStream == null)
{
// Read the file into memory
int capacity = 4096; // Default initial capacity, if stream can't report it.
if (stream.CanSeek)
{
capacity = (int)stream.Length;
}
memoryStream = new MemoryStream(capacity);
MemUtil.CopyStream(stream, memoryStream);
stream.Close();
memoryStream.Seek(0, System.IO.SeekOrigin.Begin);
}
System.Threading.Thread.Sleep(3000);
Kp2aLog.Log("Pre-loading database file completed");
return memoryStream;
}
protected override void OnSaveInstanceState(Bundle outState)
{
base.OnSaveInstanceState(outState);
AppTask.ToBundle(outState);
}
/*
protected override void OnResume() {
base.OnResume();
if (_startedWithActivityResult)
return;
if (App.Kp2a.GetDb().Loaded && (App.Kp2a.GetDb().Ioc != null)
&& (_ioConnection != null) && (App.Kp2a.GetDb().Ioc.GetDisplayName() == _ioConnection.GetDisplayName()))
{
if (App.Kp2a.QuickLocked == false)
{
LaunchNextActivity();
}
else
{
TryStartQuickUnlock();
}
}
}
* */
private void RetrieveSettings() {
String defaultFilename = _prefs.GetString(KeyDefaultFilename, "");
if (!String.IsNullOrEmpty(_ioConnection.Path) && _ioConnection.Path.Equals(defaultFilename)) {
CheckBox checkbox = (CheckBox) FindViewById(Resource.Id.default_database);
checkbox.Checked = true;
}
CheckBox cbQuickUnlock = (CheckBox)FindViewById(Resource.Id.enable_quickunlock);
cbQuickUnlock.Checked = _prefs.GetBoolean(GetString(Resource.String.QuickUnlockDefaultEnabled_key), true);
}
private String GetKeyFile(String filename) {
if ( _rememberKeyfile ) {
FileDbHelper dbHelp = App.Kp2a.FileDbHelper;
String keyfile = dbHelp.GetFileByName(filename);
return keyfile;
} else {
return "";
}
}
private void PopulateView() {
SetEditText(Resource.Id.filename, _ioConnection.GetDisplayName());
SetEditText(Resource.Id.pass_keyfile, _keyFile);
}
/*
private void errorMessage(CharSequence text)
{
Toast.MakeText(this, text, ToastLength.Long).Show();
}
*/
private void ErrorMessage(int resId)
{
Toast.MakeText(this, resId, ToastLength.Long).Show();
}
private String GetEditText(int resId) {
return Util.GetEditText(this, resId);
}
private void SetEditText(int resId, String str) {
TextView te = (TextView) FindViewById(resId);
//assert(te == null);
if (te != null) {
te.Text = str;
}
}
public override bool OnCreateOptionsMenu(IMenu menu) {
base.OnCreateOptionsMenu(menu);
MenuInflater inflate = MenuInflater;
inflate.Inflate(Resource.Menu.password, menu);
return true;
}
public override bool OnOptionsItemSelected(IMenuItem item) {
switch ( item.ItemId ) {
case Resource.Id.menu_about:
AboutDialog dialog = new AboutDialog(this);
dialog.Show();
return true;
case Resource.Id.menu_app_settings:
AppSettingsActivity.Launch(this);
return true;
}
return base.OnOptionsItemSelected(item);
}
private class AfterLoad : OnFinish {
readonly PasswordActivity _act;
public AfterLoad(Handler handler, PasswordActivity act):base(handler) {
_act = act;
}
public override void Run() {
if ( Success ) {
_act.SetEditText(Resource.Id.password, "");
_act.LaunchNextActivity();
} else {
DisplayMessage(_act);
}
}
}
}
}