package org.briarproject.android; import static android.view.View.GONE; import static android.view.View.VISIBLE; import java.io.File; import java.util.concurrent.Executor; import javax.inject.Inject; import org.briarproject.R; import org.briarproject.android.util.BriarIOUtils; import org.briarproject.api.crypto.CryptoComponent; import org.briarproject.api.crypto.CryptoExecutor; import org.briarproject.api.crypto.SecretKey; import org.briarproject.api.db.DatabaseConfig; import org.briarproject.util.StringUtils; import android.app.AlertDialog; import android.content.DialogInterface; import android.os.Bundle; import android.text.Editable; import android.view.KeyEvent; import android.view.View; import android.view.inputmethod.EditorInfo; import android.widget.Button; import android.widget.EditText; import android.widget.ProgressBar; import android.widget.TextView; import android.widget.TextView.OnEditorActionListener; public class PasswordActivity extends BaseActivity { @Inject @CryptoExecutor private Executor cryptoExecutor; private Button mSignInButton; private ProgressBar mProgress; private TextView mTitle; private EditText mPassword; private byte[] encrypted; // Fields that are accessed from background threads must be volatile @Inject private volatile CryptoComponent crypto; @Inject private volatile DatabaseConfig databaseConfig; @Override public void onCreate(Bundle state) { super.onCreate(state); String hex = this.getDbKeyInHex(); if (hex == null || !databaseConfig.databaseExists()) { this.clearDbPrefs(); return; } this.encrypted = StringUtils.fromHexString(hex); this.setContentView(R.layout.activity_password); this.mSignInButton = (Button)findViewById(R.id.btn_sign_in); this.mProgress = (ProgressBar)findViewById(R.id.progress_wheel); this.mTitle = (TextView)findViewById(R.id.title_password); this.mPassword = (EditText)findViewById(R.id.edit_password); this.mPassword.setOnEditorActionListener(new OnEditorActionListener() { @Override public boolean onEditorAction(TextView v, int actionId, KeyEvent event) { if (actionId == EditorInfo.IME_ACTION_DONE) { validatePassword(encrypted, PasswordActivity.this.mPassword.getText()); } return false; } }); } @Override protected void clearDbPrefs() { super.clearDbPrefs(); BriarIOUtils.deleteFileOrDir(databaseConfig.getDatabaseDirectory()); this.gotoAndFinish(SetupActivity.class, RESULT_CANCELED); } public void onSignInClick(View v) { this.validatePassword(this.encrypted, this.mPassword.getText()); } public void onForgottenPasswordClick(View v) { // TODO Encapsulate the dialog in a re-usable fragment AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setTitle(R.string.dialog_title_lost_password); builder.setMessage(R.string.dialog_message_lost_password); builder.setNegativeButton(R.string.no, null); builder.setPositiveButton(R.string.yes, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { PasswordActivity.this.clearDbPrefs(); } }); AlertDialog dialog = builder.create(); dialog.show(); } private void validatePassword(final byte[] encrypted, Editable e) { this.hideSoftKeyboard(); // Replace the button with a progress bar this.mSignInButton.setVisibility(View.INVISIBLE); this.mProgress.setVisibility(VISIBLE); // Decrypt the database key in a background thread final String password = e.toString(); cryptoExecutor.execute(new Runnable() { public void run() { byte[] key = crypto.decryptWithPassword(encrypted, password); if (key == null) { tryAgain(); } else { databaseConfig.setEncryptionKey(new SecretKey(key)); setResultAndFinish(); } } }); } private void tryAgain() { runOnUiThread(new Runnable() { public void run() { PasswordActivity.this.mTitle.setText(R.string.try_again); PasswordActivity.this.mSignInButton.setVisibility(VISIBLE); PasswordActivity.this.mProgress.setVisibility(GONE); PasswordActivity.this.mPassword.setText(""); } }); } private void setResultAndFinish() { runOnUiThread(new Runnable() { public void run() { setResult(RESULT_OK); finish(); } }); } }