src/core/oidentdconfiggenerator.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     *
  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/types.h>
  23 #  include <sys/stat.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
  39 OidentdConfigGenerator::~OidentdConfigGenerator()
  40 {
  41     _quasselConfig.clear();
  42     writeConfig();
  43     _configFile->deleteLater();
  44 }
  45
  46
  47 bool OidentdConfigGenerator::init()
  48 {
  49     _configDir = QDir::homePath();
  50     _configFileName = ".oidentd.conf";
  51
  52     if (Quassel::isOptionSet("oidentd-conffile"))
  53         _configPath = Quassel::optionValue("oidentd-conffile");
  54     else
  55         _configPath = _configDir.absoluteFilePath(_configFileName);
  56
  57     _configTag = " stanza created by Quassel";
  58
  59     _configFile = new QFile(_configPath);
  60
  61     // Rx has to match Template in order for cleanup to work.
  62     // Template should be enhanced with the "from" parameter as soon as Quassel gains
  63     // the ability to bind to an IP on client sockets.
  64
  65     _quasselStanzaTemplate = QString("lport %1 { reply \"%2\" } #%3\n");
  66     _quasselStanzaRx = QRegExp(QString(R"(^lport .* \{ .* \} #%1\r?\n)").arg(_configTag));
  67
  68     // initially remove all Quassel stanzas that might be present
  69     if (parseConfig(false) && writeConfig())
  70         _initialized = true;
  71
  72     return _initialized;
  73 }
  74
  75
  76 QString OidentdConfigGenerator::sysIdentForIdentity(const CoreIdentity *identity) const {
  77     // Make sure the identity's ident complies with strict mode if enabled
  78     const CoreNetwork *network = qobject_cast<CoreNetwork *>(sender());
  79     return network->coreSession()->strictCompliantIdent(identity);
  80 }
  81
  82
  83 bool OidentdConfigGenerator::addSocket(const CoreIdentity *identity,
  84                                        const QHostAddress &localAddress, quint16 localPort,
  85                                        const QHostAddress &peerAddress, quint16 peerPort,
  86                                        qint64 socketId)
  87 {
  88     Q_UNUSED(localAddress)
  89     Q_UNUSED(peerAddress)
  90     Q_UNUSED(peerPort)
  91     Q_UNUSED(socketId)
  92
  93     const QString ident = sysIdentForIdentity(identity);
  94
  95     _quasselConfig.append(_quasselStanzaTemplate.arg(localPort).arg(ident).arg(_configTag).toLatin1());
  96
  97     bool ret = writeConfig();
  98
  99     return ret;
 100 }
 101
 102
 103 //! not yet implemented
 104 bool OidentdConfigGenerator::removeSocket(const CoreIdentity *identity,
 105                                           const QHostAddress &localAddress, quint16 localPort,
 106                                           const QHostAddress &peerAddress, 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
 120 bool OidentdConfigGenerator::parseConfig(bool readQuasselStanzas)
 121 {
 122     if (!_configFile->exists())
 123         return true;
 124
 125     if (!_configFile->isOpen() && !_configFile->open(QIODevice::ReadOnly))
 126         return false;
 127     _mutex.lock();
 128
 129     _parsedConfig.clear();
 130     _configFile->seek(0);
 131     while (!_configFile->atEnd()) {
 132         QByteArray line = _configFile->readLine();
 133
 134         if (!lineByUs(line))
 135             _parsedConfig.append(line);
 136         else if (readQuasselStanzas)
 137             _quasselConfig.append(line);
 138     }
 139
 140     _configFile->close();
 141     _mutex.unlock();
 142     return true;
 143 }
 144
 145
 146 bool OidentdConfigGenerator::writeConfig()
 147 {
 148 #ifdef HAVE_UMASK
 149     mode_t prev_umask = umask(S_IXUSR | S_IWGRP | S_IXGRP | S_IWOTH | S_IXOTH); // == 0133, rw-r--r--
 150 #endif
 151     bool not_open = (!_configFile->isOpen() && !_configFile->open(QIODevice::ReadWrite | QIODevice::Text));
 152 #ifdef HAVE_UMASK
 153     umask(prev_umask);
 154 #endif
 155
 156     if (not_open)
 157         return false;
 158
 159     _mutex.lock();
 160
 161     _configFile->seek(0);
 162     _configFile->resize(0);
 163     _configFile->write(_parsedConfig);
 164     _configFile->write(_quasselConfig);
 165
 166     _configFile->close();
 167     _mutex.unlock();
 168     return true;
 169 }
 170
 171
 172 bool OidentdConfigGenerator::lineByUs(const QByteArray &line)
 173 {
 174     return _quasselStanzaRx.exactMatch(line);
 175 }