151 lines
6.5 KiB
Java
151 lines
6.5 KiB
Java
/*
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* Copyright (C) 2017 Schürmann & Breitmoser GbR
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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.util;
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import android.app.Activity;
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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.net.Uri;
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import android.os.ParcelFileDescriptor;
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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.daos.KeyRepository;
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import org.sufficientlysecure.keychain.model.SubKey.UnifiedKeyInfo;
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import org.sufficientlysecure.keychain.pgp.CanonicalizedPublicKey;
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import org.sufficientlysecure.keychain.pgp.SshPublicKey;
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import org.sufficientlysecure.keychain.pgp.exception.PgpGeneralException;
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import org.sufficientlysecure.keychain.provider.TemporaryFileProvider;
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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 timber.log.Timber;
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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 java.security.NoSuchAlgorithmException;
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public class ShareKeyHelper {
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private static String getShareKeyContent(Activity activity, UnifiedKeyInfo unifiedKeyInfo, boolean asSshKey)
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throws KeyRepository.NotFoundException, IOException, PgpGeneralException, NoSuchAlgorithmException {
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KeyRepository keyRepository = KeyRepository.create(activity);
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String content;
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if (asSshKey) {
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long authSubKeyId = unifiedKeyInfo.has_auth_key_int();
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CanonicalizedPublicKey publicKey = keyRepository.getCanonicalizedPublicKeyRing(unifiedKeyInfo.master_key_id())
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.getPublicKey(authSubKeyId);
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SshPublicKey sshPublicKey = new SshPublicKey(publicKey);
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content = sshPublicKey.getEncodedKey();
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} else {
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content = keyRepository.getPublicKeyRingAsArmoredString(unifiedKeyInfo.master_key_id());
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}
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return content;
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}
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private static void shareKey(Activity activity, UnifiedKeyInfo unifiedKeyInfo, boolean toClipboard, boolean asSshKey) {
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if (activity == null || unifiedKeyInfo == null) {
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return;
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}
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if (asSshKey && !unifiedKeyInfo.has_auth_key()) {
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Notify.create(activity, R.string.authentication_subkey_not_found, Notify.Style.ERROR).show();
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return;
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}
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try {
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String content = getShareKeyContent(activity, unifiedKeyInfo, asSshKey);
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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, Notify.Style.ERROR).show();
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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;
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if (unifiedKeyInfo.name() != null) {
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filename = unifiedKeyInfo.name();
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} else {
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filename = KeyFormattingUtils.convertFingerprintToHex(unifiedKeyInfo.fingerprint());
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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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Timber.e(e, "Error creating temporary key share file!");
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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 = activity.getString(R.string.title_share_key);
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Intent shareChooser = Intent.createChooser(sendIntent, title);
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activity.startActivity(shareChooser);
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} catch (PgpGeneralException | IOException | NoSuchAlgorithmException e) {
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Timber.e(e, "error processing key!");
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Notify.create(activity, R.string.error_key_processing, Notify.Style.ERROR).show();
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} catch (KeyRepository.NotFoundException e) {
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Timber.e(e, "key not found!");
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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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public static void shareKeyToClipboard(Activity activity, UnifiedKeyInfo unifiedKeyInfo) {
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shareKey(activity, unifiedKeyInfo, true, false);
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}
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public static void shareKey(Activity activity, UnifiedKeyInfo unifiedKeyInfo) {
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shareKey(activity, unifiedKeyInfo, false, false);
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}
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public static void shareSshKey(Activity activity, UnifiedKeyInfo unifiedKeyInfo) {
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shareKey(activity, unifiedKeyInfo, false, true);
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}
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public static void shareSshKeyToClipboard(Activity activity, UnifiedKeyInfo unifiedKeyInfo) {
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shareKey(activity, unifiedKeyInfo, true, true);
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}
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}
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