442 lines
14 KiB
Java
442 lines
14 KiB
Java
/*
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* Copyright (C) 2012-2014 Dominik Schürmann <dominik@dominikschuermann.de>
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* Copyright (C) 2010-2014 Thialfihar <thi@thialfihar.org>
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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.content.Intent;
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import android.net.Uri;
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import android.os.Bundle;
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import android.support.v4.app.Fragment;
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import android.view.Menu;
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import android.view.MenuItem;
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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.api.OpenKeychainIntents;
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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.ui.util.Notify;
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import org.sufficientlysecure.keychain.util.Log;
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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.ArrayList;
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import java.util.HashSet;
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import java.util.Set;
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public class EncryptTextActivity extends EncryptActivity implements EncryptActivityInterface {
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/* Intents */
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public static final String ACTION_ENCRYPT_TEXT = OpenKeychainIntents.ENCRYPT_TEXT;
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/* EXTRA keys for input */
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public static final String EXTRA_TEXT = OpenKeychainIntents.ENCRYPT_EXTRA_TEXT;
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// preselect ids, for internal use
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public static final String EXTRA_SIGNATURE_KEY_ID = Constants.EXTRA_PREFIX + "EXTRA_SIGNATURE_KEY_ID";
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public static final String EXTRA_ENCRYPTION_KEY_IDS = Constants.EXTRA_PREFIX + "EXTRA_SIGNATURE_KEY_IDS";
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// view
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private int mCurrentMode = MODE_ASYMMETRIC;
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// tabs
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private static final int MODE_ASYMMETRIC = 0;
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private static final int MODE_SYMMETRIC = 1;
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// model used by fragments
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private boolean mShareAfterEncrypt = false;
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private boolean mUseCompression = true;
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private boolean mHiddenRecipients = false;
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private long mEncryptionKeyIds[] = null;
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private String mEncryptionUserIds[] = null;
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// TODO Constants.key.none? What's wrong with a null value?
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private long mSigningKeyId = Constants.key.none;
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private Passphrase mPassphrase = new Passphrase();
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private ArrayList<Uri> mInputUris;
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private ArrayList<Uri> mOutputUris;
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private String mMessage = "";
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public boolean isModeSymmetric() {
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return MODE_SYMMETRIC == mCurrentMode;
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}
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@Override
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public boolean isUseArmor() {
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return true;
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}
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@Override
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public boolean isEncryptFilenames() {
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return false;
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}
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@Override
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public boolean isUseCompression() {
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return mUseCompression;
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}
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@Override
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public boolean isHiddenRecipients() {
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return mHiddenRecipients;
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}
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@Override
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public long getSignatureKey() {
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return mSigningKeyId;
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}
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@Override
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public long[] getEncryptionKeys() {
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return mEncryptionKeyIds;
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}
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@Override
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public String[] getEncryptionUsers() {
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return mEncryptionUserIds;
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}
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@Override
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public void setSignatureKey(long signatureKey) {
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mSigningKeyId = signatureKey;
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notifyUpdate();
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}
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@Override
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public void setEncryptionKeys(long[] encryptionKeys) {
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mEncryptionKeyIds = encryptionKeys;
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notifyUpdate();
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}
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@Override
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public void setEncryptionUsers(String[] encryptionUsers) {
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mEncryptionUserIds = encryptionUsers;
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notifyUpdate();
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}
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@Override
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public void setPassphrase(Passphrase passphrase) {
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if (mPassphrase != null) {
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mPassphrase.removeFromMemory();
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}
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mPassphrase = passphrase;
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}
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@Override
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public ArrayList<Uri> getInputUris() {
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if (mInputUris == null) mInputUris = new ArrayList<>();
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return mInputUris;
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}
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@Override
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public ArrayList<Uri> getOutputUris() {
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if (mOutputUris == null) mOutputUris = new ArrayList<>();
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return mOutputUris;
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}
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@Override
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public void setInputUris(ArrayList<Uri> uris) {
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mInputUris = uris;
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notifyUpdate();
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}
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@Override
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public void setOutputUris(ArrayList<Uri> uris) {
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mOutputUris = uris;
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notifyUpdate();
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}
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@Override
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public String getMessage() {
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return mMessage;
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}
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@Override
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public void setMessage(String message) {
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mMessage = message;
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}
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@Override
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public void notifyUpdate() {
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for (Fragment fragment : getSupportFragmentManager().getFragments()) {
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if (fragment instanceof UpdateListener) {
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((UpdateListener) fragment).onNotifyUpdate();
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}
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}
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}
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@Override
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public void startEncrypt(boolean share) {
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mShareAfterEncrypt = share;
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startEncrypt();
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}
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@Override
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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(EncryptTextActivity.this).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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@Override
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protected SignEncryptParcel createEncryptBundle() {
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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(PgpConstants.OpenKeychainSymmetricKeyAlgorithmTags.USE_PREFERRED);
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data.setSignatureHashAlgorithm(PgpConstants.OpenKeychainSymmetricKeyAlgorithmTags.USE_PREFERRED);
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// Always use armor for messages
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data.setEnableAsciiArmorOutput(true);
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if (isModeSymmetric()) {
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Log.d(Constants.TAG, "Symmetric encryption enabled!");
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Passphrase passphrase = mPassphrase;
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if (passphrase.isEmpty()) {
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passphrase = null;
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}
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data.setSymmetricPassphrase(passphrase);
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} else {
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data.setEncryptionMasterKeyIds(mEncryptionKeyIds);
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data.setSignatureMasterKeyId(mSigningKeyId);
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data.setSignaturePassphrase(mSigningKeyPassphrase);
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data.setNfcState(mNfcHash, mNfcTimestamp);
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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(this, 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(this).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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if (!isModeSymmetric() && mEncryptionUserIds != null) {
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Set<String> users = new HashSet<>();
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for (String user : mEncryptionUserIds) {
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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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}
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return sendIntent;
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}
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protected boolean inputIsValid() {
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if (mMessage == null) {
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Notify.create(this, R.string.error_message, Notify.Style.ERROR)
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.show(getSupportFragmentManager().findFragmentById(R.id.encrypt_text_fragment));
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return false;
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}
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if (isModeSymmetric()) {
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// symmetric encryption checks
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if (mPassphrase == null) {
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Notify.create(this, R.string.passphrases_do_not_match, Notify.Style.ERROR)
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.show(getSupportFragmentManager().findFragmentById(R.id.encrypt_text_fragment));
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return false;
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}
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if (mPassphrase.isEmpty()) {
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Notify.create(this, R.string.passphrase_must_not_be_empty, Notify.Style.ERROR)
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.show(getSupportFragmentManager().findFragmentById(R.id.encrypt_text_fragment));
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return false;
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}
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} else {
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// asymmetric encryption checks
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boolean gotEncryptionKeys = (mEncryptionKeyIds != null
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&& mEncryptionKeyIds.length > 0);
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if (!gotEncryptionKeys && mSigningKeyId == 0) {
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Notify.create(this, R.string.select_encryption_or_signature_key, Notify.Style.ERROR)
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.show(getSupportFragmentManager().findFragmentById(R.id.encrypt_text_fragment));
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return false;
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}
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}
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return true;
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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 called with an intent action, do not init drawer navigation
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if (ACTION_ENCRYPT_TEXT.equals(getIntent().getAction())) {
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// lock drawer
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// deactivateDrawerNavigation();
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// TODO: back button to key?
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} else {
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// activateDrawerNavigation(savedInstanceState);
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}
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// Handle intent actions
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handleActions(getIntent());
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updateModeFragment();
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}
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@Override
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protected void initLayout() {
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setContentView(R.layout.encrypt_text_activity);
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}
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@Override
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public boolean onCreateOptionsMenu(Menu menu) {
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getMenuInflater().inflate(R.menu.encrypt_text_activity, menu);
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return super.onCreateOptionsMenu(menu);
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}
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private void updateModeFragment() {
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getSupportFragmentManager().beginTransaction()
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.replace(R.id.encrypt_pager_mode,
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mCurrentMode == MODE_SYMMETRIC
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? new EncryptSymmetricFragment()
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: new EncryptAsymmetricFragment()
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)
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.commitAllowingStateLoss();
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getSupportFragmentManager().executePendingTransactions();
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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_use_symmetric: {
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mCurrentMode = item.isChecked() ? MODE_SYMMETRIC : MODE_ASYMMETRIC;
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updateModeFragment();
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notifyUpdate();
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break;
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}
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case R.id.check_enable_compression: {
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mUseCompression = item.isChecked();
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notifyUpdate();
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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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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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/**
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* Handles all actions with this intent
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*
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* @param intent
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*/
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private void handleActions(Intent intent) {
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String action = intent.getAction();
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Bundle extras = intent.getExtras();
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String type = intent.getType();
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if (extras == null) {
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extras = new Bundle();
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}
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/*
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* Android's Action
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*/
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// When sending to OpenKeychain Encrypt via share menu
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if (Intent.ACTION_SEND.equals(action) && type != null) {
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Log.logDebugBundle(extras, "extras");
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// When sending to OpenKeychain Encrypt via share menu
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if ("text/plain".equals(type)) {
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String sharedText = extras.getString(Intent.EXTRA_TEXT);
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if (sharedText != null) {
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// handle like normal text encryption, override action and extras to later
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// executeServiceMethod ACTION_ENCRYPT_TEXT in main actions
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extras.putString(EXTRA_TEXT, sharedText);
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action = ACTION_ENCRYPT_TEXT;
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}
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}
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}
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String textData = extras.getString(EXTRA_TEXT);
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// preselect keys given by intent
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mSigningKeyId = extras.getLong(EXTRA_SIGNATURE_KEY_ID);
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mEncryptionKeyIds = extras.getLongArray(EXTRA_ENCRYPTION_KEY_IDS);
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/**
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* Main Actions
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*/
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if (ACTION_ENCRYPT_TEXT.equals(action) && textData != null) {
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mMessage = textData;
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} else if (ACTION_ENCRYPT_TEXT.equals(action)) {
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Log.e(Constants.TAG, "Include the extra 'text' in your Intent!");
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}
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}
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}
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