Java tutorial
/* * Copyright (C) 2012-2014 Dominik Schrmann <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.net.Uri; import android.os.Bundle; import android.support.v4.view.PagerTabStrip; import android.support.v4.view.ViewPager; import android.widget.Toast; import org.sufficientlysecure.keychain.Constants; import org.sufficientlysecure.keychain.R; import org.sufficientlysecure.keychain.helper.FileHelper; import org.sufficientlysecure.keychain.pgp.PgpHelper; import org.sufficientlysecure.keychain.ui.adapter.PagerTabStripAdapter; import org.sufficientlysecure.keychain.util.Log; import java.util.regex.Matcher; public class DecryptActivity extends DrawerActivity { /* Intents */ public static final String ACTION_DECRYPT = Constants.INTENT_PREFIX + "DECRYPT"; /* EXTRA keys for input */ public static final String EXTRA_TEXT = "text"; ViewPager mViewPager; PagerTabStrip mPagerTabStrip; PagerTabStripAdapter mTabsAdapter; Bundle mMessageFragmentBundle = new Bundle(); Bundle mFileFragmentBundle = new Bundle(); int mSwitchToTab = PAGER_TAB_MESSAGE; private static final int PAGER_TAB_MESSAGE = 0; private static final int PAGER_TAB_FILE = 1; private void initView() { mViewPager = (ViewPager) findViewById(R.id.decrypt_pager); mPagerTabStrip = (PagerTabStrip) findViewById(R.id.decrypt_pager_tab_strip); mTabsAdapter = new PagerTabStripAdapter(this); mViewPager.setAdapter(mTabsAdapter); } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.decrypt_activity); initView(); setupDrawerNavigation(savedInstanceState); // Handle intent actions, maybe changes the bundles handleActions(getIntent()); mTabsAdapter.addTab(DecryptMessageFragment.class, mMessageFragmentBundle, getString(R.string.label_message)); mTabsAdapter.addTab(DecryptFileFragment.class, mFileFragmentBundle, getString(R.string.label_file)); mViewPager.setCurrentItem(mSwitchToTab); } /** * Handles all actions with this intent * * @param intent */ private void handleActions(Intent intent) { String action = intent.getAction(); Bundle extras = intent.getExtras(); String type = intent.getType(); Uri uri = intent.getData(); if (extras == null) { extras = new Bundle(); } /* * 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 in main actions extras.putString(EXTRA_TEXT, sharedText); action = ACTION_DECRYPT; } } else { // Binary via content provider (could also be files) // override uri to get stream from send uri = (Uri) intent.getParcelableExtra(Intent.EXTRA_STREAM); action = ACTION_DECRYPT; } } else if (Intent.ACTION_VIEW.equals(action)) { // Android's Action when opening file associated to Keychain (see AndroidManifest.xml) // override action action = ACTION_DECRYPT; } String textData = extras.getString(EXTRA_TEXT); /** * Main Actions */ if (ACTION_DECRYPT.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", " "); mMessageFragmentBundle.putString(DecryptMessageFragment.ARG_CIPHERTEXT, textData); mSwitchToTab = PAGER_TAB_MESSAGE; } 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", " "); mMessageFragmentBundle.putString(DecryptMessageFragment.ARG_CIPHERTEXT, textData); mSwitchToTab = PAGER_TAB_MESSAGE; } else { Log.d(Constants.TAG, "Nothing matched!"); } } } else if (ACTION_DECRYPT.equals(action) && uri != null) { // get file path from uri String path = FileHelper.getPath(this, uri); if (path != null) { mFileFragmentBundle.putString(DecryptFileFragment.ARG_FILENAME, path); mSwitchToTab = PAGER_TAB_FILE; } else { Log.e(Constants.TAG, "Direct binary data without actual file in filesystem is not supported. " + "Please use the Remote Service API!"); Toast.makeText(this, R.string.error_only_files_are_supported, Toast.LENGTH_LONG).show(); // end activity finish(); } } else { Log.e(Constants.TAG, "Include the extra 'text' or an Uri with setData() in your Intent!"); } } }