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Split platform specific code to its own file

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PR #21368.
This commit is contained in:
Chocobo1 2024-09-22 14:28:40 +08:00 • committed by GitHub
parent 8a6207d3fc
commit a23f45cc70
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5 changed files with 240 additions and 137 deletions
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142
src/base/utils/random.cpp
View file

@ -1,6 +1,6 @@
/*
* Bittorrent Client using Qt and libtorrent.
* Copyright (C) 2017 Mike Tzou
* Copyright (C) 2017-2024 Mike Tzou (Chocobo1)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
@ -30,146 +30,16 @@
#include <random>
#include <QtLogging>
#include <QtSystemDetection>
#if defined(Q_OS_WIN)
#include <windows.h>
#include "base/global.h"
#include "base/utils/os.h"
#elif defined(Q_OS_LINUX)
#include <cerrno>
#include <cstring>
#include <sys/random.h>
#if defined(Q_OS_LINUX)
#include "randomlayer_linux.cpp"
#elif defined(Q_OS_WIN)
#include "randomlayer_win.cpp"
#else
#include <cerrno>
#include <cstdio>
#include <cstring>
#include "randomlayer_other.cpp"
#endif
namespace
{
#if defined(Q_OS_WIN)
class RandomLayer
{
// need to satisfy UniformRandomBitGenerator requirements
public:
using result_type = uint32_t;
RandomLayer()
: m_processPrng {Utils::OS::loadWinAPI<PPROCESSPRNG>(u"BCryptPrimitives.dll"_s, "ProcessPrng")}
{
if (!m_processPrng)
qFatal("Failed to load ProcessPrng().");
}
static constexpr result_type min()
{
return std::numeric_limits<result_type>::min();
}
static constexpr result_type max()
{
return std::numeric_limits<result_type>::max();
}
result_type operator()()
{
result_type buf = 0;
const bool result = m_processPrng(reinterpret_cast<PBYTE>(&buf), sizeof(buf));
if (!result)
qFatal("ProcessPrng() failed.");
return buf;
}
private:
using PPROCESSPRNG = BOOL (WINAPI *)(PBYTE, SIZE_T);
const PPROCESSPRNG m_processPrng;
};
#elif defined(Q_OS_LINUX)
class RandomLayer
{
// need to satisfy UniformRandomBitGenerator requirements
public:
using result_type = uint32_t;
RandomLayer()
{
}
static constexpr result_type min()
{
return std::numeric_limits<result_type>::min();
}
static constexpr result_type max()
{
return std::numeric_limits<result_type>::max();
}
result_type operator()()
{
const int RETRY_MAX = 3;
for (int i = 0; i < RETRY_MAX; ++i)
{
result_type buf = 0;
const ssize_t result = ::getrandom(&buf, sizeof(buf), 0);
if (result == sizeof(buf)) // success
return buf;
if (result < 0)
qFatal("getrandom() error. Reason: %s. Error code: %d.", std::strerror(errno), errno);
}
qFatal("getrandom() failed. Reason: too many retries.");
}
};
#else
class RandomLayer
{
// need to satisfy UniformRandomBitGenerator requirements
public:
using result_type = uint32_t;
RandomLayer()
: m_randDev {fopen("/dev/urandom", "rb")}
{
if (!m_randDev)
qFatal("Failed to open /dev/urandom. Reason: %s. Error code: %d.", std::strerror(errno), errno);
}
~RandomLayer()
{
fclose(m_randDev);
}
static constexpr result_type min()
{
return std::numeric_limits<result_type>::min();
}
static constexpr result_type max()
{
return std::numeric_limits<result_type>::max();
}
result_type operator()() const
{
result_type buf = 0;
if (fread(&buf, sizeof(buf), 1, m_randDev) != 1)
qFatal("Read /dev/urandom error. Reason: %s. Error code: %d.", std::strerror(errno), errno);
return buf;
}
private:
FILE *m_randDev = nullptr;
};
#endif
}
uint32_t Utils::Random::rand(const uint32_t min, const uint32_t max)
{
static RandomLayer layer;

2
src/base/utils/random.h
View file

@ -1,6 +1,6 @@
/*
* Bittorrent Client using Qt and libtorrent.
* Copyright (C) 2017 Mike Tzou
* Copyright (C) 2017-2024 Mike Tzou (Chocobo1)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License

77
src/base/utils/randomlayer_linux.cpp Normal file
View file

@ -0,0 +1,77 @@
/*
* Bittorrent Client using Qt and libtorrent.
* Copyright (C) 2024 Mike Tzou (Chocobo1)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* In addition, as a special exception, the copyright holders give permission to
* link this program with the OpenSSL project's "OpenSSL" library (or with
* modified versions of it that use the same license as the "OpenSSL" library),
* and distribute the linked executables. You must obey the GNU General Public
* License in all respects for all of the code used other than "OpenSSL". If you
* modify file(s), you may extend this exception to your version of the file(s),
* but you are not obligated to do so. If you do not wish to do so, delete this
* exception statement from your version.
*/
#include <cerrno>
#include <cstring>
#include <limits>
#include <sys/random.h>
#include <QtLogging>
namespace
{
class RandomLayer
{
// need to satisfy UniformRandomBitGenerator requirements
public:
using result_type = uint32_t;
RandomLayer()
{
}
static constexpr result_type min()
{
return std::numeric_limits<result_type>::min();
}
static constexpr result_type max()
{
return std::numeric_limits<result_type>::max();
}
result_type operator()()
{
const int RETRY_MAX = 3;
for (int i = 0; i < RETRY_MAX; ++i)
{
result_type buf = 0;
const ssize_t result = ::getrandom(&buf, sizeof(buf), 0);
if (result == sizeof(buf)) // success
return buf;
if (result < 0)
qFatal("getrandom() error. Reason: %s. Error code: %d.", std::strerror(errno), errno);
}
qFatal("getrandom() failed. Reason: too many retries.");
}
};
}

79
src/base/utils/randomlayer_other.cpp Normal file
View file

@ -0,0 +1,79 @@
/*
* Bittorrent Client using Qt and libtorrent.
* Copyright (C) 2024 Mike Tzou (Chocobo1)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* In addition, as a special exception, the copyright holders give permission to
* link this program with the OpenSSL project's "OpenSSL" library (or with
* modified versions of it that use the same license as the "OpenSSL" library),
* and distribute the linked executables. You must obey the GNU General Public
* License in all respects for all of the code used other than "OpenSSL". If you
* modify file(s), you may extend this exception to your version of the file(s),
* but you are not obligated to do so. If you do not wish to do so, delete this
* exception statement from your version.
*/
#include <limits>
#include <cerrno>
#include <cstdio>
#include <cstring>
#include <QtLogging>
namespace
{
class RandomLayer
{
// need to satisfy UniformRandomBitGenerator requirements
public:
using result_type = uint32_t;
RandomLayer()
: m_randDev {fopen("/dev/urandom", "rb")}
{
if (!m_randDev)
qFatal("Failed to open /dev/urandom. Reason: %s. Error code: %d.", std::strerror(errno), errno);
}
~RandomLayer()
{
fclose(m_randDev);
}
static constexpr result_type min()
{
return std::numeric_limits<result_type>::min();
}
static constexpr result_type max()
{
return std::numeric_limits<result_type>::max();
}
result_type operator()() const
{
result_type buf = 0;
if (fread(&buf, sizeof(buf), 1, m_randDev) != 1)
qFatal("Read /dev/urandom error. Reason: %s. Error code: %d.", std::strerror(errno), errno);
return buf;
}
private:
FILE *m_randDev = nullptr;
};
}

77
src/base/utils/randomlayer_win.cpp Normal file
View file

@ -0,0 +1,77 @@
/*
* Bittorrent Client using Qt and libtorrent.
* Copyright (C) 2024 Mike Tzou (Chocobo1)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* In addition, as a special exception, the copyright holders give permission to
* link this program with the OpenSSL project's "OpenSSL" library (or with
* modified versions of it that use the same license as the "OpenSSL" library),
* and distribute the linked executables. You must obey the GNU General Public
* License in all respects for all of the code used other than "OpenSSL". If you
* modify file(s), you may extend this exception to your version of the file(s),
* but you are not obligated to do so. If you do not wish to do so, delete this
* exception statement from your version.
*/
#include <limits>
#include <windows.h>
#include <QtLogging>
#include "base/global.h"
#include "base/utils/os.h"
namespace
{
class RandomLayer
{
// need to satisfy UniformRandomBitGenerator requirements
public:
using result_type = uint32_t;
RandomLayer()
: m_processPrng {Utils::OS::loadWinAPI<PPROCESSPRNG>(u"BCryptPrimitives.dll"_s, "ProcessPrng")}
{
if (!m_processPrng)
qFatal("Failed to load ProcessPrng().");
}
static constexpr result_type min()
{
return std::numeric_limits<result_type>::min();
}
static constexpr result_type max()
{
return std::numeric_limits<result_type>::max();
}
result_type operator()()
{
result_type buf = 0;
const bool result = m_processPrng(reinterpret_cast<PBYTE>(&buf), sizeof(buf));
if (!result)
qFatal("ProcessPrng() failed.");
return buf;
}
private:
using PPROCESSPRNG = BOOL (WINAPI *)(PBYTE, SIZE_T);
const PPROCESSPRNG m_processPrng = nullptr;
};
}