255 lines
9.9 KiB
Java
255 lines
9.9 KiB
Java
/*
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* Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.sufficientlysecure.keychain.ui;
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import android.app.Activity;
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import android.app.ProgressDialog;
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import android.content.Intent;
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import android.os.Bundle;
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import android.os.Handler;
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import android.os.Message;
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import android.os.Messenger;
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import android.support.v4.app.Fragment;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.TextView;
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import org.sufficientlysecure.keychain.Constants;
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import org.sufficientlysecure.keychain.R;
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import org.sufficientlysecure.keychain.compatibility.ClipboardReflection;
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import org.sufficientlysecure.keychain.helper.Preferences;
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import org.sufficientlysecure.keychain.service.KeychainIntentService;
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import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
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import org.sufficientlysecure.keychain.service.PassphraseCacheService;
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import org.sufficientlysecure.keychain.ui.dialog.PassphraseDialogFragment;
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import org.sufficientlysecure.keychain.util.Log;
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import org.sufficientlysecure.keychain.util.Notify;
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public class EncryptMessageFragment extends Fragment {
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public static final String ARG_TEXT = "text";
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private TextView mMessage = null;
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private View mEncryptShare;
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private View mEncryptClipboard;
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private EncryptActivityInterface mEncryptInterface;
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@Override
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public void onAttach(Activity activity) {
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super.onAttach(activity);
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try {
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mEncryptInterface = (EncryptActivityInterface) activity;
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} catch (ClassCastException e) {
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throw new ClassCastException(activity.toString() + " must implement EncryptActivityInterface");
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}
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}
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/**
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* Inflate the layout for this fragment
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*/
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@Override
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public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
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View view = inflater.inflate(R.layout.encrypt_message_fragment, container, false);
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mMessage = (TextView) view.findViewById(R.id.message);
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mEncryptClipboard = view.findViewById(R.id.action_encrypt_clipboard);
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mEncryptShare = view.findViewById(R.id.action_encrypt_share);
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mEncryptClipboard.setOnClickListener(new View.OnClickListener() {
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@Override
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public void onClick(View v) {
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encryptClicked(true);
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}
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});
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mEncryptShare.setOnClickListener(new View.OnClickListener() {
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@Override
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public void onClick(View v) {
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encryptClicked(false);
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}
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});
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return view;
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}
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@Override
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public void onActivityCreated(Bundle savedInstanceState) {
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super.onActivityCreated(savedInstanceState);
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String text = getArguments().getString(ARG_TEXT);
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if (text != null) {
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mMessage.setText(text);
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}
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}
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/**
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* Fixes bad message characters for gmail
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*
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* @param message
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* @return
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*/
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private String fixBadCharactersForGmail(String message) {
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// fix the message a bit, trailing spaces and newlines break stuff,
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// because GMail sends as HTML and such things fuck up the
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// signature,
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// TODO: things like "<" and ">" also fuck up the signature
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message = message.replaceAll(" +\n", "\n");
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message = message.replaceAll("\n\n+", "\n\n");
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message = message.replaceFirst("^\n+", "");
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// make sure there'll be exactly one newline at the end
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message = message.replaceFirst("\n*$", "\n");
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return message;
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}
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private void encryptClicked(final boolean toClipboard) {
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if (mEncryptInterface.isModeSymmetric()) {
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// symmetric encryption
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boolean gotPassphrase = (mEncryptInterface.getPassphrase() != null
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&& mEncryptInterface.getPassphrase().length() != 0);
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if (!gotPassphrase) {
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Notify.showNotify(getActivity(), R.string.passphrase_must_not_be_empty, Notify.Style.ERROR);
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return;
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}
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if (!mEncryptInterface.getPassphrase().equals(mEncryptInterface.getPassphraseAgain())) {
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Notify.showNotify(getActivity(), R.string.passphrases_do_not_match, Notify.Style.ERROR);
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return;
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}
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} else {
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// asymmetric encryption
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boolean gotEncryptionKeys = (mEncryptInterface.getEncryptionKeys() != null
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&& mEncryptInterface.getEncryptionKeys().length > 0);
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if (!gotEncryptionKeys && mEncryptInterface.getSignatureKey() == 0) {
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Notify.showNotify(getActivity(), R.string.select_encryption_or_signature_key,
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Notify.Style.ERROR);
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return;
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}
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if (mEncryptInterface.getSignatureKey() != 0 &&
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PassphraseCacheService.getCachedPassphrase(getActivity(),
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mEncryptInterface.getSignatureKey()) == null) {
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PassphraseDialogFragment.show(getActivity(), mEncryptInterface.getSignatureKey(),
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new Handler() {
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@Override
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public void handleMessage(Message message) {
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if (message.what == PassphraseDialogFragment.MESSAGE_OKAY) {
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encryptStart(toClipboard);
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}
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}
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});
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return;
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}
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}
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encryptStart(toClipboard);
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}
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private void encryptStart(final boolean toClipboard) {
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// Send all information needed to service to edit key in other thread
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Intent intent = new Intent(getActivity(), KeychainIntentService.class);
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intent.setAction(KeychainIntentService.ACTION_ENCRYPT_SIGN);
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// fill values for this action
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Bundle data = new Bundle();
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data.putInt(KeychainIntentService.TARGET, KeychainIntentService.IO_BYTES);
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String message = mMessage.getText().toString();
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if (mEncryptInterface.isModeSymmetric()) {
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Log.d(Constants.TAG, "Symmetric encryption enabled!");
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String passphrase = mEncryptInterface.getPassphrase();
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if (passphrase.length() == 0) {
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passphrase = null;
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}
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data.putString(KeychainIntentService.ENCRYPT_SYMMETRIC_PASSPHRASE, passphrase);
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} else {
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data.putLong(KeychainIntentService.ENCRYPT_SIGNATURE_KEY_ID,
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mEncryptInterface.getSignatureKey());
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data.putLongArray(KeychainIntentService.ENCRYPT_ENCRYPTION_KEYS_IDS,
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mEncryptInterface.getEncryptionKeys());
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boolean signOnly = (mEncryptInterface.getEncryptionKeys() == null
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|| mEncryptInterface.getEncryptionKeys().length == 0);
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if (signOnly) {
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message = fixBadCharactersForGmail(message);
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}
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}
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data.putByteArray(KeychainIntentService.ENCRYPT_MESSAGE_BYTES, message.getBytes());
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data.putBoolean(KeychainIntentService.ENCRYPT_USE_ASCII_ARMOR, true);
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int compressionId = Preferences.getPreferences(getActivity()).getDefaultMessageCompression();
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data.putInt(KeychainIntentService.ENCRYPT_COMPRESSION_ID, compressionId);
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intent.putExtra(KeychainIntentService.EXTRA_DATA, data);
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// Message is received after encrypting is done in KeychainIntentService
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KeychainIntentServiceHandler saveHandler = new KeychainIntentServiceHandler(getActivity(),
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getString(R.string.progress_encrypting), ProgressDialog.STYLE_HORIZONTAL) {
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public void handleMessage(Message message) {
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// handle messages by standard KeychainIntentServiceHandler first
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super.handleMessage(message);
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if (message.arg1 == KeychainIntentServiceHandler.MESSAGE_OKAY) {
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// get returned data bundle
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Bundle data = message.getData();
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String output = new String(data.getByteArray(KeychainIntentService.RESULT_BYTES));
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Log.d(Constants.TAG, "output: " + output);
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if (toClipboard) {
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ClipboardReflection.copyToClipboard(getActivity(), output);
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Notify.showNotify(getActivity(),
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R.string.encrypt_sign_clipboard_successful, Notify.Style.INFO);
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} else {
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Intent sendIntent = new Intent(Intent.ACTION_SEND);
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// Type is set to text/plain so that encrypted messages can
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// be sent with Whatsapp, Hangouts, SMS etc...
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sendIntent.setType("text/plain");
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sendIntent.putExtra(Intent.EXTRA_TEXT, output);
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startActivity(Intent.createChooser(sendIntent,
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getString(R.string.title_share_with)));
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}
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}
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}
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};
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// Create a new Messenger for the communication back
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Messenger messenger = new Messenger(saveHandler);
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intent.putExtra(KeychainIntentService.EXTRA_MESSENGER, messenger);
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// show progress dialog
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saveHandler.showProgressDialog(getActivity());
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// start service with intent
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getActivity().startService(intent);
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}
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}
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