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/*
* Copyright (C) 2012-2014 Dominik Schürmann <dominik@dominikschuermann.de>
* Copyright (C) 2010-2014 Thialfihar <thi@thialfihar.org>
*
* This program 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 3 of the License, or
* (at your option) any later version.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.sufficientlysecure.keychain.ui;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.api.OpenKeychainIntents;
import org.sufficientlysecure.keychain.compatibility.ClipboardReflection;
import org.sufficientlysecure.keychain.pgp.PgpHelper;
import org.sufficientlysecure.keychain.util.Log;
import org.sufficientlysecure.keychain.util.Notify;
import java.util.regex.Matcher;
public class DecryptTextActivity extends ActionBarActivity {
/* Intents */
public static final String ACTION_DECRYPT_TEXT = OpenKeychainIntents.DECRYPT_TEXT;
public static final String EXTRA_TEXT = OpenKeychainIntents.DECRYPT_EXTRA_TEXT;
// intern
public static final String ACTION_DECRYPT_FROM_CLIPBOARD = Constants.INTENT_PREFIX + "DECRYPT_TEXT_FROM_CLIPBOARD";
DecryptTextFragment mFragment;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.decrypt_text_activity);
// Handle intent actions
handleActions(savedInstanceState, getIntent());
}
/**
* Handles all actions with this intent
*
* @param intent
*/
private void handleActions(Bundle savedInstanceState, Intent intent) {
String action = intent.getAction();
Bundle extras = intent.getExtras();
String type = intent.getType();
if (extras == null) {
extras = new Bundle();
}
String textData = null;
/*
* Android's Action
*/
if (Intent.ACTION_SEND.equals(action) && type != null) {
// When sending to Keychain Decrypt via share menu
if ("text/plain".equals(type)) {
// Plain text
String sharedText = intent.getStringExtra(Intent.EXTRA_TEXT);
if (sharedText != null) {
// handle like normal text decryption, override action and extras to later
// executeServiceMethod ACTION_DECRYPT_TEXT in main actions
textData = sharedText;
}
}
}
/**
* Main Actions
*/
textData = extras.getString(EXTRA_TEXT);
if (ACTION_DECRYPT_TEXT.equals(action) && textData != null) {
Log.d(Constants.TAG, "textData not null, matching text ...");
Matcher matcher = PgpHelper.PGP_MESSAGE.matcher(textData);
if (matcher.matches()) {
Log.d(Constants.TAG, "PGP_MESSAGE matched");
textData = matcher.group(1);
// replace non breakable spaces
textData = textData.replaceAll("\\xa0", " ");
} else {
matcher = PgpHelper.PGP_CLEARTEXT_SIGNATURE.matcher(textData);
if (matcher.matches()) {
Log.d(Constants.TAG, "PGP_CLEARTEXT_SIGNATURE matched");
textData = matcher.group(1);
// replace non breakable spaces
textData = textData.replaceAll("\\xa0", " ");
} else {
Notify.showNotify(this, R.string.error_invalid_data, Notify.Style.ERROR);
Log.d(Constants.TAG, "Nothing matched!");
}
}
} else if (ACTION_DECRYPT_FROM_CLIPBOARD.equals(action)) {
CharSequence clipboardText = ClipboardReflection.getClipboardText(this);
// only decrypt if clipboard content is available and a pgp message or cleartext signature
if (clipboardText != null) {
Matcher matcher = PgpHelper.PGP_MESSAGE.matcher(clipboardText);
if (!matcher.matches()) {
matcher = PgpHelper.PGP_CLEARTEXT_SIGNATURE.matcher(clipboardText);
}
if (matcher.matches()) {
textData = matcher.group(1);
} else {
Notify.showNotify(this, R.string.error_invalid_data, Notify.Style.ERROR);
}
} else {
Notify.showNotify(this, R.string.error_invalid_data, Notify.Style.ERROR);
}
} else if (ACTION_DECRYPT_TEXT.equals(action)) {
Log.e(Constants.TAG,
"Include the extra 'text' in your Intent!");
}
loadFragment(savedInstanceState, textData);
}
private void loadFragment(Bundle savedInstanceState, String ciphertext) {
// However, if we're being restored from a previous state,
// then we don't need to do anything and should return or else
// we could end up with overlapping fragments.
if (savedInstanceState != null) {
return;
}
// Create an instance of the fragment
mFragment = DecryptTextFragment.newInstance(ciphertext);
// Add the fragment to the 'fragment_container' FrameLayout
// NOTE: We use commitAllowingStateLoss() to prevent weird crashes!
getSupportFragmentManager().beginTransaction()
.replace(R.id.decrypt_text_fragment_container, mFragment)
.commitAllowingStateLoss();
// do it immediately!
getSupportFragmentManager().executePendingTransactions();
}
}
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