src/core/coreircchannel.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2005-2020 by the Quassel Project                        *
   3  *   devel@quassel-irc.org                                                 *
   4  *                                                                         *
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   8  *   (at your option) version 3.                                           *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
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  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
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  14  *                                                                         *
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  19  ***************************************************************************/
  20
  21 #include "coreircchannel.h"
  22
  23 #include "corenetwork.h"
  24
  25 CoreIrcChannel::CoreIrcChannel(const QString& channelname, Network* network)
  26     : IrcChannel(channelname, network)
  27     , _receivedWelcomeMsg(false)
  28 {
  29 #ifdef HAVE_QCA2
  30     _cipher = nullptr;
  31
  32     // Get the cipher key from CoreNetwork if present
  33     auto* coreNetwork = qobject_cast<CoreNetwork*>(network);
  34     if (coreNetwork) {
  35         QByteArray key = coreNetwork->readChannelCipherKey(channelname);
  36         if (!key.isEmpty()) {
  37             setEncrypted(cipher()->setKey(key));
  38         }
  39     }
  40 #endif
  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     auto* 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 #ifdef HAVE_QCA2
  60 Cipher* CoreIrcChannel::cipher() const
  61 {
  62     if (!_cipher)
  63         _cipher = new Cipher();
  64
  65     return _cipher;
  66 }
  67
  68 void CoreIrcChannel::setEncrypted(bool e)
  69 {
  70     IrcChannel::setEncrypted(e);
  71
  72     if (!Cipher::neededFeaturesAvailable())
  73         return;
  74
  75     if (e) {
  76         if (topic().isEmpty())
  77             return;
  78
  79         QByteArray decrypted = cipher()->decryptTopic(topic().toLatin1());
  80         setTopic(decodeString(decrypted));
  81     }
  82 }
  83
  84 #endif