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Split platform specific code to its own file
PR #21368.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -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."); | ||
| } | ||
| }; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -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); | ||
|
|
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| return buf; | ||
| } | ||
|
|
||
| private: | ||
| FILE *m_randDev = nullptr; | ||
| }; | ||
| } |
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