mirror of
https://github.com/oxen-io/session-android.git
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b8f663b69c
1) Move all the crypto classes from securesms.crypto. 2) Move all the crypto storage from securesms.database.keys 3) Replace the old imported BC code with spongycastle.
118 lines
4.1 KiB
Java
118 lines
4.1 KiB
Java
/**
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* Copyright (C) 2011 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;
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import android.app.Activity;
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import android.content.Context;
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import android.content.SharedPreferences;
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import android.os.Bundle;
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import android.preference.PreferenceManager;
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import android.util.Log;
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import android.view.View;
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import android.widget.Button;
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import org.thoughtcrime.securesms.crypto.KeyExchangeInitiator;
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import org.whispersystems.textsecure.crypto.MasterSecret;
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import org.whispersystems.textsecure.storage.LocalKeyRecord;
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import org.whispersystems.textsecure.storage.RemoteKeyRecord;
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import org.thoughtcrime.securesms.protocol.Tag;
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import org.thoughtcrime.securesms.recipients.Recipient;
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import org.thoughtcrime.securesms.util.MemoryCleaner;
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/**
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* Activity which prompts the user to initiate a secure
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* session. Initiated by whitespace tag detection from
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* the remote endpoint.
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*
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* @author Moxie Marlinspike
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*
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*/
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public class AutoInitiateActivity extends Activity {
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private long threadId;
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private Recipient recipient;
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private MasterSecret masterSecret;
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@Override
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public void onCreate(Bundle icicle) {
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super.onCreate(icicle);
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setContentView(R.layout.auto_initiate_activity);
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initializeResources();
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}
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@Override
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public void onDestroy() {
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MemoryCleaner.clean(masterSecret);
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super.onDestroy();
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}
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private void initializeResources() {
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this.threadId = this.getIntent().getLongExtra("threadId", -1);
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this.recipient = (Recipient)this.getIntent().getParcelableExtra("recipient");
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this.masterSecret = (MasterSecret)this.getIntent().getParcelableExtra("masterSecret");
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((Button)findViewById(R.id.initiate_button)).setOnClickListener(new OkListener());
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((Button)findViewById(R.id.cancel_button)).setOnClickListener(new CancelListener());
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}
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private void initiateKeyExchange() {
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KeyExchangeInitiator.initiate(this, masterSecret, recipient, true);
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finish();
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}
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private class OkListener implements View.OnClickListener {
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@Override
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public void onClick(View v) {
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initiateKeyExchange();
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}
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}
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private class CancelListener implements View.OnClickListener {
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@Override
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public void onClick(View v) {
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Log.w("AutoInitiateActivity", "Exempting threadID: " + threadId);
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exemptThread(AutoInitiateActivity.this, threadId);
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AutoInitiateActivity.this.finish();
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}
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}
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public static void exemptThread(Context context, long threadId) {
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SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(context);
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sp.edit().putBoolean("pref_thread_auto_init_exempt_" + threadId, true).commit();
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}
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public static boolean isValidAutoInitiateSituation(Context context, MasterSecret masterSecret,
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Recipient recipient, String message, long threadId)
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{
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return
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Tag.isTagged(message) &&
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isThreadQualified(context, threadId) &&
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isExchangeQualified(context, masterSecret, recipient);
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}
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private static boolean isThreadQualified(Context context, long threadId) {
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SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(context);
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return !sp.getBoolean("pref_thread_auto_init_exempt_" + threadId, false);
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}
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private static boolean isExchangeQualified(Context context, MasterSecret masterSecret, Recipient recipient) {
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return
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(new RemoteKeyRecord(context,recipient).getCurrentRemoteKey() == null) &&
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(new LocalKeyRecord(context, masterSecret, recipient).getCurrentKeyPair() == null);
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}
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}
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