455 lines
18 KiB
Java
455 lines
18 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 java.io.BufferedWriter;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import java.io.OutputStreamWriter;
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import android.app.Activity;
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import android.app.ActivityOptions;
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import android.content.ClipData;
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import android.content.ClipboardManager;
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import android.content.Context;
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import android.content.Intent;
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import android.database.Cursor;
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import android.graphics.Bitmap;
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import android.graphics.PorterDuff;
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import android.net.Uri;
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import android.os.AsyncTask;
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import android.os.Build;
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import android.os.Bundle;
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import android.os.ParcelFileDescriptor;
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import android.support.v4.app.ActivityCompat;
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import android.support.v4.app.LoaderManager;
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import android.support.v4.content.CursorLoader;
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import android.support.v4.content.Loader;
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import android.support.v7.widget.CardView;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.View.OnLayoutChangeListener;
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import android.view.ViewGroup;
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import android.view.animation.AlphaAnimation;
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import android.widget.ImageButton;
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import android.widget.ImageView;
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import android.widget.TextView;
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import org.openintents.openpgp.util.OpenPgpUtils;
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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.pgp.KeyRing;
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import org.sufficientlysecure.keychain.pgp.exception.PgpGeneralException;
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import org.sufficientlysecure.keychain.pgp.exception.PgpKeyNotFoundException;
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import org.sufficientlysecure.keychain.provider.KeyRepository;
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import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
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import org.sufficientlysecure.keychain.provider.TemporaryFileProvider;
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import org.sufficientlysecure.keychain.ui.base.LoaderFragment;
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import org.sufficientlysecure.keychain.ui.util.FormattingUtils;
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import org.sufficientlysecure.keychain.ui.util.KeyFormattingUtils;
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import org.sufficientlysecure.keychain.ui.util.Notify;
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import org.sufficientlysecure.keychain.ui.util.Notify.Style;
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import org.sufficientlysecure.keychain.ui.util.QrCodeUtils;
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import org.sufficientlysecure.keychain.util.Log;
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public class ViewKeyAdvShareFragment extends LoaderFragment implements
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LoaderManager.LoaderCallbacks<Cursor> {
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public static final String ARG_DATA_URI = "uri";
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private ImageView mQrCode;
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private CardView mQrCodeLayout;
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private TextView mFingerprintView;
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private static final int LOADER_ID_UNIFIED = 0;
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private Uri mDataUri;
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private byte[] mFingerprint;
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private String mUserId;
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private Bitmap mQrCodeBitmapCache;
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@Override
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public View onCreateView(LayoutInflater inflater, ViewGroup superContainer, Bundle savedInstanceState) {
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View root = super.onCreateView(inflater, superContainer, savedInstanceState);
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View view = inflater.inflate(R.layout.view_key_adv_share_fragment, getContainer());
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mFingerprintView = (TextView) view.findViewById(R.id.view_key_fingerprint);
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mQrCode = (ImageView) view.findViewById(R.id.view_key_qr_code);
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// We cache the QR code bitmap in its smallest possible size, then scale
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// it manually for the correct size whenever the layout of the ImageView
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// changes. The fingerprint qr code loader which runs in the background
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// just calls requestLayout when it is finished, this way the loader and
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// background task are disconnected from any layouting the ImageView may
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// undergo. Please note how these six lines are perfectly right-aligned.
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mQrCode.addOnLayoutChangeListener(new OnLayoutChangeListener() {
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@Override
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public void onLayoutChange(View v, int left, int top, int right, int bottom, int oldLeft, int oldTop,
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int oldRight,
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int oldBottom) {
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// bitmap scaling is expensive, avoid doing it if we already have the correct size!
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int mCurrentWidth = 0, mCurrentHeight = 0;
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if (mQrCodeBitmapCache != null) {
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if (mCurrentWidth == mQrCode.getWidth() && mCurrentHeight == mQrCode.getHeight()) {
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return;
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}
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mCurrentWidth = mQrCode.getWidth();
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mCurrentHeight = mQrCode.getHeight();
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// scale the image up to our actual size. we do this in code rather
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// than let the ImageView do this because we don't require filtering.
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Bitmap scaled = Bitmap.createScaledBitmap(mQrCodeBitmapCache,
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mCurrentWidth, mCurrentHeight, false);
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mQrCode.setImageBitmap(scaled);
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}
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}
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});
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mQrCodeLayout = (CardView) view.findViewById(R.id.view_key_qr_code_layout);
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mQrCodeLayout.setOnClickListener(new View.OnClickListener() {
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@Override
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public void onClick(View v) {
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showQrCodeDialog();
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}
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});
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View vFingerprintShareButton = view.findViewById(R.id.view_key_action_fingerprint_share);
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View vFingerprintClipboardButton = view.findViewById(R.id.view_key_action_fingerprint_clipboard);
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View vKeyShareButton = view.findViewById(R.id.view_key_action_key_share);
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View vKeyClipboardButton = view.findViewById(R.id.view_key_action_key_clipboard);
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ImageButton vKeySafeSlingerButton = (ImageButton) view.findViewById(R.id.view_key_action_key_safeslinger);
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View vKeyUploadButton = view.findViewById(R.id.view_key_action_upload);
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vKeySafeSlingerButton.setColorFilter(FormattingUtils.getColorFromAttr(getActivity(), R.attr.colorTertiaryText),
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PorterDuff.Mode.SRC_IN);
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vFingerprintShareButton.setOnClickListener(new View.OnClickListener() {
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@Override
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public void onClick(View v) {
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shareFingerprint(false);
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}
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});
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vFingerprintClipboardButton.setOnClickListener(new View.OnClickListener() {
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@Override
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public void onClick(View v) {
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shareFingerprint(true);
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}
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});
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vKeyShareButton.setOnClickListener(new View.OnClickListener() {
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@Override
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public void onClick(View v) {
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shareKey(false);
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}
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});
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vKeyClipboardButton.setOnClickListener(new View.OnClickListener() {
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@Override
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public void onClick(View v) {
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shareKey(true);
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}
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});
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vKeySafeSlingerButton.setOnClickListener(new View.OnClickListener() {
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@Override
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public void onClick(View v) {
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startSafeSlinger(mDataUri);
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}
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});
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vKeyUploadButton.setOnClickListener(new View.OnClickListener() {
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@Override
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public void onClick(View v) {
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uploadToKeyserver();
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}
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});
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return root;
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}
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private void startSafeSlinger(Uri dataUri) {
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long keyId = 0;
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try {
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keyId = KeyRepository.createDatabaseInteractor(getContext())
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.getCachedPublicKeyRing(dataUri)
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.extractOrGetMasterKeyId();
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} catch (PgpKeyNotFoundException e) {
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Log.e(Constants.TAG, "key not found!", e);
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}
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Intent safeSlingerIntent = new Intent(getActivity(), SafeSlingerActivity.class);
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safeSlingerIntent.putExtra(SafeSlingerActivity.EXTRA_MASTER_KEY_ID, keyId);
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startActivityForResult(safeSlingerIntent, 0);
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}
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private void shareKey(boolean toClipboard) {
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Activity activity = getActivity();
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if (activity == null || mFingerprint == null) {
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return;
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}
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KeyRepository keyRepository =
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KeyRepository.createDatabaseInteractor(getContext());
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try {
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long masterKeyId = keyRepository.getCachedPublicKeyRing(mDataUri).extractOrGetMasterKeyId();
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String content = keyRepository.getPublicKeyRingAsArmoredString(masterKeyId);
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if (toClipboard) {
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ClipboardManager clipMan = (ClipboardManager) activity.getSystemService(Context.CLIPBOARD_SERVICE);
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if (clipMan == null) {
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Notify.create(activity, R.string.error_clipboard_copy, Style.ERROR);
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return;
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}
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ClipData clip = ClipData.newPlainText(Constants.CLIPBOARD_LABEL, content);
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clipMan.setPrimaryClip(clip);
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Notify.create(activity, R.string.key_copied_to_clipboard, Notify.Style.OK).show();
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return;
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}
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// let user choose application
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Intent sendIntent = new Intent(Intent.ACTION_SEND);
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sendIntent.setType(Constants.MIME_TYPE_KEYS);
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// NOTE: Don't use Intent.EXTRA_TEXT to send the key
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// better send it via a Uri!
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// example: Bluetooth Share will convert text/plain sent via Intent.EXTRA_TEXT to HTML
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try {
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TemporaryFileProvider shareFileProv = new TemporaryFileProvider();
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String filename = KeyFormattingUtils.convertFingerprintToHex(mFingerprint);
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OpenPgpUtils.UserId mainUserId = KeyRing.splitUserId(mUserId);
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if (mainUserId.name != null) {
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filename = mainUserId.name;
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}
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Uri contentUri = TemporaryFileProvider.createFile(activity, filename + Constants.FILE_EXTENSION_ASC);
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BufferedWriter contentWriter = new BufferedWriter(new OutputStreamWriter(
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new ParcelFileDescriptor.AutoCloseOutputStream(
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shareFileProv.openFile(contentUri, "w"))));
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contentWriter.write(content);
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contentWriter.close();
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sendIntent.putExtra(Intent.EXTRA_STREAM, contentUri);
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} catch (FileNotFoundException e) {
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Log.e(Constants.TAG, "Error creating temporary key share file!", e);
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// no need for a snackbar because one sharing option doesn't work
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// Notify.create(getActivity(), R.string.error_temp_file, Notify.Style.ERROR).show();
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}
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String title = getString(R.string.title_share_key);
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Intent shareChooser = Intent.createChooser(sendIntent, title);
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startActivity(shareChooser);
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} catch (PgpGeneralException | IOException e) {
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Log.e(Constants.TAG, "error processing key!", e);
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Notify.create(activity, R.string.error_key_processing, Notify.Style.ERROR).show();
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} catch (PgpKeyNotFoundException | KeyRepository.NotFoundException e) {
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Log.e(Constants.TAG, "key not found!", e);
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Notify.create(activity, R.string.error_key_not_found, Notify.Style.ERROR).show();
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}
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}
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private void shareFingerprint(boolean toClipboard) {
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Activity activity = getActivity();
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if (activity == null || mFingerprint == null) {
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return;
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}
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String content;
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String fingerprint = KeyFormattingUtils.convertFingerprintToHex(mFingerprint);
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if (!toClipboard) {
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content = Constants.FINGERPRINT_SCHEME + ":" + fingerprint;
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} else {
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content = fingerprint;
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}
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if (toClipboard) {
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ClipboardManager clipMan = (ClipboardManager) activity.getSystemService(Context.CLIPBOARD_SERVICE);
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if (clipMan == null) {
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Notify.create(activity, R.string.error_clipboard_copy, Style.ERROR);
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return;
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}
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ClipData clip = ClipData.newPlainText(Constants.CLIPBOARD_LABEL, content);
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clipMan.setPrimaryClip(clip);
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Notify.create(activity, R.string.fingerprint_copied_to_clipboard, Notify.Style.OK).show();
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return;
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}
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// let user choose application
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Intent sendIntent = new Intent(Intent.ACTION_SEND);
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sendIntent.putExtra(Intent.EXTRA_TEXT, content);
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sendIntent.setType("text/plain");
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String title = getString(R.string.title_share_fingerprint_with);
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Intent shareChooser = Intent.createChooser(sendIntent, title);
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startActivity(shareChooser);
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}
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private void showQrCodeDialog() {
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Intent qrCodeIntent = new Intent(getActivity(), QrCodeViewActivity.class);
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// create the transition animation - the images in the layouts
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// of both activities are defined with android:transitionName="qr_code"
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Bundle opts = null;
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
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ActivityOptions options = ActivityOptions
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.makeSceneTransitionAnimation(getActivity(), mQrCodeLayout, "qr_code");
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opts = options.toBundle();
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}
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qrCodeIntent.setData(mDataUri);
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ActivityCompat.startActivity(getActivity(), qrCodeIntent, opts);
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}
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@Override
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public void onViewCreated(View view, Bundle savedInstanceState) {
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super.onViewCreated(view, savedInstanceState);
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Uri dataUri = getArguments().getParcelable(ARG_DATA_URI);
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if (dataUri == null) {
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Log.e(Constants.TAG, "Data missing. Should be Uri of key!");
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getActivity().finish();
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return;
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}
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loadData(dataUri);
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}
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private void loadData(Uri dataUri) {
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mDataUri = dataUri;
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// Prepare the loaders. Either re-connect with an existing ones,
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// or start new ones.
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getLoaderManager().initLoader(LOADER_ID_UNIFIED, null, this);
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}
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static final String[] UNIFIED_PROJECTION = new String[]{
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KeyRings._ID, KeyRings.FINGERPRINT, KeyRings.USER_ID
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};
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static final int INDEX_UNIFIED_FINGERPRINT = 1;
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static final int INDEX_UNIFIED_USER_ID = 2;
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public Loader<Cursor> onCreateLoader(int id, Bundle args) {
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setContentShown(false);
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switch (id) {
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case LOADER_ID_UNIFIED: {
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Uri baseUri = KeyRings.buildUnifiedKeyRingUri(mDataUri);
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return new CursorLoader(getActivity(), baseUri, UNIFIED_PROJECTION, null, null, null);
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}
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default:
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return null;
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}
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}
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public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
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// Avoid NullPointerExceptions...
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if (data == null || data.getCount() == 0) {
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return;
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}
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// Swap the new cursor in. (The framework will take care of closing the
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// old cursor once we return.)
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switch (loader.getId()) {
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case LOADER_ID_UNIFIED: {
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if (data.moveToFirst()) {
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byte[] fingerprintBlob = data.getBlob(INDEX_UNIFIED_FINGERPRINT);
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setFingerprint(fingerprintBlob);
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mUserId = data.getString(INDEX_UNIFIED_USER_ID);
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break;
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}
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}
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}
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setContentShown(true);
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}
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/**
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* This is called when the last Cursor provided to onLoadFinished() above is about to be closed.
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* We need to make sure we are no longer using it.
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*/
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public void onLoaderReset(Loader<Cursor> loader) {
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mFingerprint = null;
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mQrCodeBitmapCache = null;
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}
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/**
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* Load QR Code asynchronously and with a fade in animation
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*/
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private void setFingerprint(byte[] fingerprintBlob) {
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mFingerprint = fingerprintBlob;
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final String fingerprint = KeyFormattingUtils.convertFingerprintToHex(fingerprintBlob);
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mFingerprintView.setText(KeyFormattingUtils.colorizeFingerprint(fingerprint));
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if (mQrCodeBitmapCache != null) {
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return;
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}
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AsyncTask<Void, Void, Bitmap> loadTask =
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new AsyncTask<Void, Void, Bitmap>() {
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protected Bitmap doInBackground(Void... unused) {
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Uri uri = new Uri.Builder()
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.scheme(Constants.FINGERPRINT_SCHEME)
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.opaquePart(fingerprint)
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.build();
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// render with minimal size
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return QrCodeUtils.getQRCodeBitmap(uri, 0);
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}
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protected void onPostExecute(Bitmap qrCode) {
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// cache for later, and if we are attached request re-layout
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mQrCodeBitmapCache = qrCode;
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if (ViewKeyAdvShareFragment.this.isAdded()) {
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mQrCode.requestLayout();
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// simple fade-in animation
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AlphaAnimation anim = new AlphaAnimation(0.0f, 1.0f);
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anim.setDuration(200);
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mQrCode.startAnimation(anim);
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}
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}
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};
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loadTask.execute();
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}
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private void uploadToKeyserver() {
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long keyId;
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try {
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keyId = KeyRepository.createDatabaseInteractor(getContext())
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.getCachedPublicKeyRing(mDataUri)
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.extractOrGetMasterKeyId();
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} catch (PgpKeyNotFoundException e) {
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Log.e(Constants.TAG, "key not found!", e);
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Notify.create(getActivity(), "key not found", Style.ERROR).show();
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return;
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}
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Intent uploadIntent = new Intent(getActivity(), UploadKeyActivity.class);
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uploadIntent.setData(mDataUri);
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uploadIntent.putExtra(MultiUserIdsFragment.EXTRA_KEY_IDS, new long[]{keyId});
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startActivityForResult(uploadIntent, 0);
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}
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}
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