mirror of
https://github.com/oxen-io/session-android.git
synced 2023-12-14 02:53:01 +01:00
5602a3dfc0
1) Switch to new TextSecureAddress addressing, rather than mixing long-based recipient IDs into libtextsecure. 2) Get rid of RecipientFormattingException throws in calls to RecipientFactory. Closes #2570
89 lines
4.6 KiB
Java
89 lines
4.6 KiB
Java
/**
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* Copyright (C) 2011 Whisper Systems
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* Copyright (C) 2013 Open Whisper Systems
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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.thoughtcrime.securesms.crypto;
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import android.app.AlertDialog;
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import android.content.Context;
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import android.content.DialogInterface;
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import org.thoughtcrime.securesms.R;
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import org.thoughtcrime.securesms.crypto.storage.TextSecureIdentityKeyStore;
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import org.thoughtcrime.securesms.crypto.storage.TextSecurePreKeyStore;
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import org.thoughtcrime.securesms.crypto.storage.TextSecureSessionStore;
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import org.thoughtcrime.securesms.recipients.Recipient;
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import org.thoughtcrime.securesms.sms.MessageSender;
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import org.thoughtcrime.securesms.sms.OutgoingKeyExchangeMessage;
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import org.thoughtcrime.securesms.util.Base64;
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import org.thoughtcrime.securesms.util.Dialogs;
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import org.whispersystems.libaxolotl.AxolotlAddress;
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import org.whispersystems.libaxolotl.SessionBuilder;
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import org.whispersystems.libaxolotl.protocol.KeyExchangeMessage;
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import org.whispersystems.libaxolotl.state.IdentityKeyStore;
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import org.whispersystems.libaxolotl.state.PreKeyStore;
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import org.whispersystems.libaxolotl.state.SessionRecord;
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import org.whispersystems.libaxolotl.state.SessionStore;
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import org.whispersystems.libaxolotl.state.SignedPreKeyStore;
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import org.whispersystems.textsecure.api.push.TextSecureAddress;
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public class KeyExchangeInitiator {
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public static void initiate(final Context context, final MasterSecret masterSecret, final Recipient recipient, boolean promptOnExisting) {
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if (promptOnExisting && hasInitiatedSession(context, masterSecret, recipient)) {
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AlertDialog.Builder dialog = new AlertDialog.Builder(context);
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dialog.setTitle(R.string.KeyExchangeInitiator_initiate_despite_existing_request_question);
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dialog.setMessage(R.string.KeyExchangeInitiator_youve_already_sent_a_session_initiation_request_to_this_recipient_are_you_sure);
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dialog.setIcon(Dialogs.resolveIcon(context, R.attr.dialog_alert_icon));
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dialog.setCancelable(true);
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dialog.setPositiveButton(R.string.KeyExchangeInitiator_send, new DialogInterface.OnClickListener() {
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public void onClick(DialogInterface dialog, int which) {
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initiateKeyExchange(context, masterSecret, recipient);
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}
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});
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dialog.setNegativeButton(android.R.string.cancel, null);
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dialog.show();
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} else {
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initiateKeyExchange(context, masterSecret, recipient);
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}
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}
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private static void initiateKeyExchange(Context context, MasterSecret masterSecret, Recipient recipient) {
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SessionStore sessionStore = new TextSecureSessionStore(context, masterSecret);
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PreKeyStore preKeyStore = new TextSecurePreKeyStore(context, masterSecret);
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SignedPreKeyStore signedPreKeyStore = new TextSecurePreKeyStore(context, masterSecret);
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IdentityKeyStore identityKeyStore = new TextSecureIdentityKeyStore(context, masterSecret);
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SessionBuilder sessionBuilder = new SessionBuilder(sessionStore, preKeyStore, signedPreKeyStore,
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identityKeyStore, new AxolotlAddress(recipient.getNumber(),
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TextSecureAddress.DEFAULT_DEVICE_ID));
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KeyExchangeMessage keyExchangeMessage = sessionBuilder.process();
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String serializedMessage = Base64.encodeBytesWithoutPadding(keyExchangeMessage.serialize());
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OutgoingKeyExchangeMessage textMessage = new OutgoingKeyExchangeMessage(recipient, serializedMessage);
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MessageSender.send(context, masterSecret, textMessage, -1, false);
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}
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private static boolean hasInitiatedSession(Context context, MasterSecret masterSecret,
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Recipient recipient)
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{
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SessionStore sessionStore = new TextSecureSessionStore(context, masterSecret);
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SessionRecord sessionRecord = sessionStore.loadSession(new AxolotlAddress(recipient.getNumber(), TextSecureAddress.DEFAULT_DEVICE_ID));
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return sessionRecord.getSessionState().hasPendingKeyExchange();
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}
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}
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