src/core/oidentdconfiggenerator.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2005-2019 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     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.         *
  19  ***************************************************************************/
  20
  21 #ifdef HAVE_UMASK
  22 #    include <sys/stat.h>
  23 #    include <sys/types.h>
  24 #endif /* HAVE_UMASK */
  25
  26 #include <QString>
  27
  28 #include "corenetwork.h"
  29 #include "oidentdconfiggenerator.h"
  30
  31 OidentdConfigGenerator::OidentdConfigGenerator(QObject* parent)
  32     : QObject(parent)
  33 {
  34     if (!_initialized)
  35         init();
  36 }
  37
  38 OidentdConfigGenerator::~OidentdConfigGenerator()
  39 {
  40     _quasselConfig.clear();
  41     writeConfig();
  42     _configFile->deleteLater();
  43 }
  44
  45 bool OidentdConfigGenerator::init()
  46 {
  47     _configDir.setPath(QDir::homePath());
  48     _configFileName = ".oidentd.conf";
  49
  50     if (Quassel::isOptionSet("oidentd-conffile"))
  51         _configPath = Quassel::optionValue("oidentd-conffile");
  52     else
  53         _configPath = _configDir.absoluteFilePath(_configFileName);
  54
  55     _configTag = " stanza created by Quassel";
  56
  57     _configFile = new QFile(_configPath);
  58
  59     // Rx has to match Template in order for cleanup to work.
  60     // Template should be enhanced with the "from" parameter as soon as Quassel gains
  61     // the ability to bind to an IP on client sockets.
  62
  63     _quasselStanzaTemplate = QString("lport %1 { reply \"%2\" } #%3\n");
  64     _quasselStanzaRx = QRegExp(QString(R"(^lport .* \{ .* \} #%1\r?\n)").arg(_configTag));
  65
  66     // initially remove all Quassel stanzas that might be present
  67     if (parseConfig(false) && writeConfig())
  68         _initialized = true;
  69
  70     return _initialized;
  71 }
  72
  73 QString OidentdConfigGenerator::sysIdentForIdentity(const CoreIdentity* identity) const
  74 {
  75     // Make sure the identity's ident complies with strict mode if enabled
  76     const CoreNetwork* network = qobject_cast<CoreNetwork*>(sender());
  77     return network->coreSession()->strictCompliantIdent(identity);
  78 }
  79
  80 bool OidentdConfigGenerator::addSocket(const CoreIdentity* identity,
  81                                        const QHostAddress& localAddress,
  82                                        quint16 localPort,
  83                                        const QHostAddress& peerAddress,
  84                                        quint16 peerPort,
  85                                        qint64 socketId)
  86 {
  87     Q_UNUSED(localAddress)
  88     Q_UNUSED(peerAddress)
  89     Q_UNUSED(peerPort)
  90     Q_UNUSED(socketId)
  91
  92     const QString ident = sysIdentForIdentity(identity);
  93
  94     _quasselConfig.append(_quasselStanzaTemplate.arg(localPort).arg(ident).arg(_configTag).toLatin1());
  95
  96     bool ret = writeConfig();
  97
  98     return ret;
  99 }
 100
 101 //! not yet implemented
 102 bool OidentdConfigGenerator::removeSocket(const CoreIdentity* identity,
 103                                           const QHostAddress& localAddress,
 104                                           quint16 localPort,
 105                                           const QHostAddress& peerAddress,
 106                                           quint16 peerPort,
 107                                           qint64 socketId)
 108 {
 109     Q_UNUSED(identity)
 110     Q_UNUSED(localAddress)
 111     Q_UNUSED(localPort)
 112     Q_UNUSED(peerAddress)
 113     Q_UNUSED(peerPort)
 114     Q_UNUSED(socketId)
 115
 116     return true;
 117 }
 118
 119 bool OidentdConfigGenerator::parseConfig(bool readQuasselStanzas)
 120 {
 121     if (!_configFile->exists())
 122         return true;
 123
 124     if (!_configFile->isOpen() && !_configFile->open(QIODevice::ReadOnly))
 125         return false;
 126     _mutex.lock();
 127
 128     _parsedConfig.clear();
 129     _configFile->seek(0);
 130     while (!_configFile->atEnd()) {
 131         QByteArray line = _configFile->readLine();
 132
 133         if (!lineByUs(line))
 134             _parsedConfig.append(line);
 135         else if (readQuasselStanzas)
 136             _quasselConfig.append(line);
 137     }
 138
 139     _configFile->close();
 140     _mutex.unlock();
 141     return true;
 142 }
 143
 144 bool OidentdConfigGenerator::writeConfig()
 145 {
 146 #ifdef HAVE_UMASK
 147     mode_t prev_umask = umask(S_IXUSR | S_IWGRP | S_IXGRP | S_IWOTH | S_IXOTH);  // == 0133, rw-r--r--
 148 #endif
 149     bool not_open = (!_configFile->isOpen() && !_configFile->open(QIODevice::ReadWrite | QIODevice::Text));
 150 #ifdef HAVE_UMASK
 151     umask(prev_umask);
 152 #endif
 153
 154     if (not_open)
 155         return false;
 156
 157     _mutex.lock();
 158
 159     _configFile->seek(0);
 160     _configFile->resize(0);
 161     _configFile->write(_parsedConfig);
 162     _configFile->write(_quasselConfig);
 163
 164     _configFile->close();
 165     _mutex.unlock();
 166     return true;
 167 }
 168
 169 bool OidentdConfigGenerator::lineByUs(const QByteArray& line)
 170 {
 171     return _quasselStanzaRx.exactMatch(line);
 172 }