src/core/coreircchannel.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2005-2018 by the Quassel Project                        *
   3  *   devel@quassel-irc.org                                                 *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) version 3.                                           *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
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  18  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.         *
  19  ***************************************************************************/
  20
  21 #include "coreircchannel.h"
  22 #include "corenetwork.h"
  23
  24 CoreIrcChannel::CoreIrcChannel(const QString &channelname, Network *network)
  25     : IrcChannel(channelname, network),
  26     _receivedWelcomeMsg(false)
  27 {
  28 #ifdef HAVE_QCA2
  29     _cipher = nullptr;
  30
  31     // Get the cipher key from CoreNetwork if present
  32     CoreNetwork *coreNetwork = qobject_cast<CoreNetwork *>(network);
  33     if (coreNetwork) {
  34         QByteArray key = coreNetwork->readChannelCipherKey(channelname);
  35         if (!key.isEmpty()) {
  36             setEncrypted(cipher()->setKey(key));
  37         }
  38     }
  39 #endif
  40 }
  41
  42
  43 CoreIrcChannel::~CoreIrcChannel()
  44 {
  45 #ifdef HAVE_QCA2
  46     // Store the cipher key in CoreNetwork, including empty keys if a cipher
  47     // exists. There is no need to store the empty key if no cipher exists; no
  48     // key was present when instantiating and no key was set during the
  49     // channel's lifetime.
  50     CoreNetwork *coreNetwork = qobject_cast<CoreNetwork *>(network());
  51     if (coreNetwork && _cipher) {
  52         coreNetwork->storeChannelCipherKey(name(), _cipher->key());
  53     }
  54
  55     delete _cipher;
  56 #endif
  57 }
  58
  59
  60 #ifdef HAVE_QCA2
  61 Cipher *CoreIrcChannel::cipher() const
  62 {
  63     if (!_cipher)
  64         _cipher = new Cipher();
  65
  66     return _cipher;
  67 }
  68
  69
  70 void CoreIrcChannel::setEncrypted(bool e)
  71 {
  72     IrcChannel::setEncrypted(e);
  73
  74     if (!Cipher::neededFeaturesAvailable())
  75         return;
  76
  77     if (e) {
  78         if (topic().isEmpty())
  79             return;
  80
  81         QByteArray decrypted = cipher()->decryptTopic(topic().toLatin1());
  82         setTopic(decodeString(decrypted));
  83     }
  84 }
  85
  86
  87 #endif