373 lines
13 KiB
Java
373 lines
13 KiB
Java
/*
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* Copyright (C) 2014-2015 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.Message;
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import android.os.Messenger;
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import android.text.Editable;
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import android.text.TextWatcher;
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import android.view.LayoutInflater;
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import android.view.Menu;
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import android.view.MenuInflater;
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import android.view.MenuItem;
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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.spongycastle.bcpg.CompressionAlgorithmTags;
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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.operations.results.SignEncryptResult;
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import org.sufficientlysecure.keychain.pgp.KeyRing;
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import org.sufficientlysecure.keychain.pgp.PgpConstants;
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import org.sufficientlysecure.keychain.pgp.SignEncryptParcel;
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import org.sufficientlysecure.keychain.service.KeychainIntentService;
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import org.sufficientlysecure.keychain.service.ServiceProgressHandler;
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import org.sufficientlysecure.keychain.service.input.CryptoInputParcel;
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import org.sufficientlysecure.keychain.ui.base.CachingCryptoOperationFragment;
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import org.sufficientlysecure.keychain.ui.dialog.ProgressDialogFragment;
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import org.sufficientlysecure.keychain.ui.util.Notify;
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import org.sufficientlysecure.keychain.util.Passphrase;
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import org.sufficientlysecure.keychain.util.ShareHelper;
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import java.util.HashSet;
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import java.util.Set;
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public class EncryptTextFragment extends CachingCryptoOperationFragment<SignEncryptParcel> {
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public static final String ARG_TEXT = "text";
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public static final String ARG_USE_COMPRESSION = "use_compression";
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private boolean mShareAfterEncrypt;
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private boolean mUseCompression;
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private boolean mHiddenRecipients = false;
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private String mMessage = "";
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/**
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* Creates new instance of this fragment
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*/
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public static EncryptTextFragment newInstance(String text) {
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EncryptTextFragment frag = new EncryptTextFragment();
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Bundle args = new Bundle();
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args.putString(ARG_TEXT, text);
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frag.setArguments(args);
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return frag;
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}
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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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if ( ! (activity instanceof EncryptActivity) ) {
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throw new AssertionError(activity + " must inherit from EncryptionActivity");
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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_text_fragment, container, false);
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TextView textView = (TextView) view.findViewById(R.id.encrypt_text_text);
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textView.addTextChangedListener(new TextWatcher() {
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@Override
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public void beforeTextChanged(CharSequence s, int start, int count, int after) {
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}
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@Override
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public void onTextChanged(CharSequence s, int start, int before, int count) {
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}
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@Override
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public void afterTextChanged(Editable s) {
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mMessage = s.toString();
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}
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});
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// set initial text
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if (mMessage != null) {
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textView.setText(mMessage);
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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 onSaveInstanceState(Bundle outState) {
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super.onSaveInstanceState(outState);
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outState.putBoolean(ARG_USE_COMPRESSION, mUseCompression);
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}
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@Override
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public void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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if (savedInstanceState == null) {
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mMessage = getArguments().getString(ARG_TEXT);
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}
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Bundle args = savedInstanceState == null ? getArguments() : savedInstanceState;
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mUseCompression = args.getBoolean(ARG_USE_COMPRESSION, true);
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setHasOptionsMenu(true);
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}
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@Override
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public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
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super.onCreateOptionsMenu(menu, inflater);
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inflater.inflate(R.menu.encrypt_text_fragment, menu);
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menu.findItem(R.id.check_enable_compression).setChecked(mUseCompression);
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}
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@Override
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public boolean onOptionsItemSelected(MenuItem item) {
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if (item.isCheckable()) {
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item.setChecked(!item.isChecked());
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}
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switch (item.getItemId()) {
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case R.id.check_enable_compression: {
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mUseCompression = item.isChecked();
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break;
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}
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// case R.id.check_hidden_recipients: {
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// mHiddenRecipients = item.isChecked();
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// notifyUpdate();
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// break;
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// }
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case R.id.encrypt_copy: {
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cryptoOperation(false);
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break;
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}
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case R.id.encrypt_share: {
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cryptoOperation(true);
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break;
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}
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default: {
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return super.onOptionsItemSelected(item);
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}
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}
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return true;
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}
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protected void onEncryptSuccess(SignEncryptResult result) {
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if (mShareAfterEncrypt) {
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// Share encrypted message/file
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startActivity(sendWithChooserExcludingEncrypt(result.getResultBytes()));
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} else {
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// Copy to clipboard
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copyToClipboard(result.getResultBytes());
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result.createNotify(getActivity()).show();
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// Notify.create(EncryptTextActivity.this,
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// R.string.encrypt_sign_clipboard_successful, Notify.Style.OK)
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// .show(getSupportFragmentManager().findFragmentById(R.id.encrypt_text_fragment));
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}
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}
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protected SignEncryptParcel createEncryptBundle() {
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if (mMessage == null || mMessage.isEmpty()) {
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Notify.create(getActivity(), R.string.error_empty_text, Notify.Style.ERROR)
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.show(this);
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return null;
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}
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// fill values for this action
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SignEncryptParcel data = new SignEncryptParcel();
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data.setBytes(mMessage.getBytes());
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data.setCleartextSignature(true);
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if (mUseCompression) {
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data.setCompressionId(PgpConstants.sPreferredCompressionAlgorithms.get(0));
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} else {
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data.setCompressionId(CompressionAlgorithmTags.UNCOMPRESSED);
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}
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data.setHiddenRecipients(mHiddenRecipients);
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data.setSymmetricEncryptionAlgorithm(
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PgpConstants.OpenKeychainSymmetricKeyAlgorithmTags.USE_PREFERRED);
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data.setSignatureHashAlgorithm(
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PgpConstants.OpenKeychainSymmetricKeyAlgorithmTags.USE_PREFERRED);
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// Always use armor for messages
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data.setEnableAsciiArmorOutput(true);
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EncryptActivity modeInterface = (EncryptActivity) getActivity();
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EncryptModeFragment modeFragment = modeInterface.getModeFragment();
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if (modeFragment.isAsymmetric()) {
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long[] encryptionKeyIds = modeFragment.getAsymmetricEncryptionKeyIds();
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long signingKeyId = modeFragment.getAsymmetricSigningKeyId();
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boolean gotEncryptionKeys = (encryptionKeyIds != null
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&& encryptionKeyIds.length > 0);
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if (!gotEncryptionKeys && signingKeyId == 0L) {
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Notify.create(getActivity(), R.string.select_encryption_or_signature_key, Notify.Style.ERROR)
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.show(this);
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return null;
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}
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data.setEncryptionMasterKeyIds(encryptionKeyIds);
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data.setSignatureMasterKeyId(signingKeyId);
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} else {
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Passphrase passphrase = modeFragment.getSymmetricPassphrase();
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if (passphrase == null) {
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Notify.create(getActivity(), R.string.passphrases_do_not_match, Notify.Style.ERROR)
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.show(this);
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return null;
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}
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if (passphrase.isEmpty()) {
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Notify.create(getActivity(), R.string.passphrase_must_not_be_empty, Notify.Style.ERROR)
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.show(this);
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return null;
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}
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data.setSymmetricPassphrase(passphrase);
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}
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return data;
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}
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private void copyToClipboard(byte[] resultBytes) {
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ClipboardReflection.copyToClipboard(getActivity(), new String(resultBytes));
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}
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/**
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* Create Intent Chooser but exclude OK's EncryptActivity.
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*/
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private Intent sendWithChooserExcludingEncrypt(byte[] resultBytes) {
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Intent prototype = createSendIntent(resultBytes);
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String title = getString(R.string.title_share_message);
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// we don't want to encrypt the encrypted, no inception ;)
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String[] blacklist = new String[]{
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Constants.PACKAGE_NAME + ".ui.EncryptTextActivity",
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"org.thialfihar.android.apg.ui.EncryptActivity"
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};
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return new ShareHelper(getActivity()).createChooserExcluding(prototype, title, blacklist);
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}
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private Intent createSendIntent(byte[] resultBytes) {
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Intent sendIntent;
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sendIntent = new Intent(Intent.ACTION_SEND);
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sendIntent.setType(Constants.ENCRYPTED_TEXT_MIME);
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sendIntent.putExtra(Intent.EXTRA_TEXT, new String(resultBytes));
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EncryptActivity modeInterface = (EncryptActivity) getActivity();
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EncryptModeFragment modeFragment = modeInterface.getModeFragment();
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if (!modeFragment.isAsymmetric()) {
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return sendIntent;
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}
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String[] encryptionUserIds = modeFragment.getAsymmetricEncryptionUserIds();
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if (encryptionUserIds == null) {
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return sendIntent;
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}
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Set<String> users = new HashSet<>();
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for (String user : encryptionUserIds) {
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KeyRing.UserId userId = KeyRing.splitUserId(user);
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if (userId.email != null) {
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users.add(userId.email);
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}
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}
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// pass trough email addresses as extra for email applications
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sendIntent.putExtra(Intent.EXTRA_EMAIL, users.toArray(new String[users.size()]));
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return sendIntent;
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}
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public void cryptoOperation(boolean share) {
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mShareAfterEncrypt = share;
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cryptoOperation();
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}
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@Override
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protected void cryptoOperation(CryptoInputParcel cryptoInput, SignEncryptParcel actionsParcel) {
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if (actionsParcel == null) {
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actionsParcel = createEncryptBundle();
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// this is null if invalid, just return in that case
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if (actionsParcel == null) {
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// Notify was created by inputIsValid.
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return;
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}
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cacheActionsParcel(actionsParcel);
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}
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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_SIGN_ENCRYPT);
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Bundle data = new Bundle();
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data.putParcelable(KeychainIntentService.SIGN_ENCRYPT_PARCEL, actionsParcel);
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data.putParcelable(KeychainIntentService.EXTRA_CRYPTO_INPUT, cryptoInput);
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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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ServiceProgressHandler serviceHandler = new ServiceProgressHandler(
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getActivity(),
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getString(R.string.progress_encrypting),
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ProgressDialog.STYLE_HORIZONTAL
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) {
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@Override
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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 (handlePendingMessage(message)) {
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return;
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}
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if (message.arg1 == MessageStatus.OKAY.ordinal()) {
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SignEncryptResult result =
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message.getData().getParcelable(SignEncryptResult.EXTRA_RESULT);
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if (result.success()) {
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onEncryptSuccess(result);
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} else {
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result.createNotify(getActivity()).show();
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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(serviceHandler);
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intent.putExtra(KeychainIntentService.EXTRA_MESSENGER, messenger);
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// show progress dialog
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serviceHandler.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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