mirror of
https://github.com/matrix-construct/construct
synced 2024-06-02 10:08:56 +02:00
426 lines
8.1 KiB
C++
426 lines
8.1 KiB
C++
/*
|
|
* charybdis: A slightly useful ircd.
|
|
* ircd.c: Starts up and runs the ircd.
|
|
*
|
|
* Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
|
|
* Copyright (C) 1996-2002 Hybrid Development Team
|
|
* Copyright (C) 2002-2008 ircd-ratbox development team
|
|
* Copyright (C) 2005-2013 charybdis development team
|
|
*
|
|
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
|
|
* USA
|
|
*/
|
|
|
|
#undef linux
|
|
#include <RB_INC_UNISTD_H
|
|
#include <RB_INC_SYS_SYSCALL_H
|
|
#include <RB_INC_SYS_EVENTFD_H
|
|
#include <RB_INC_LINUX_AIO_ABI_H
|
|
#include <RB_INC_BOOST_FILESYSTEM_HPP
|
|
#include <ircd/asio.h>
|
|
|
|
namespace ircd::fs
|
|
{
|
|
using namespace boost::filesystem;
|
|
|
|
enum
|
|
{
|
|
NAME = 0,
|
|
PATH = 1,
|
|
};
|
|
|
|
using ent = std::pair<std::string, std::string>;
|
|
extern const std::array<ent, num_of<index>()> paths;
|
|
}
|
|
|
|
decltype(ircd::fs::paths)
|
|
ircd::fs::paths
|
|
{{
|
|
{ "prefix", DPATH },
|
|
{ "binary dir", BINPATH },
|
|
{ "config", ETCPATH },
|
|
{ "log", LOGPATH },
|
|
{ "libexec dir", PKGLIBEXECDIR },
|
|
{ "modules", MODPATH },
|
|
{ "ircd.conf", CPATH },
|
|
{ "ircd binary", SPATH },
|
|
{ "db", DBPATH },
|
|
}};
|
|
|
|
ircd::fs::init::init()
|
|
:aio{std::make_unique<fs::aio>()}
|
|
{
|
|
}
|
|
|
|
ircd::fs::init::~init()
|
|
noexcept
|
|
{
|
|
}
|
|
|
|
bool
|
|
ircd::fs::write(const std::string &path,
|
|
const const_raw_buffer &buf)
|
|
{
|
|
if(fs::exists(path))
|
|
return false;
|
|
|
|
return overwrite(path, buf);
|
|
}
|
|
|
|
bool
|
|
ircd::fs::overwrite(const string_view &path,
|
|
const const_raw_buffer &buf)
|
|
{
|
|
return overwrite(std::string{path}, buf);
|
|
}
|
|
|
|
bool
|
|
ircd::fs::overwrite(const std::string &path,
|
|
const const_raw_buffer &buf)
|
|
{
|
|
std::ofstream file{path, std::ios::trunc};
|
|
file.write(reinterpret_cast<const char *>(data(buf)), size(buf));
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
ircd::fs::append(const std::string &path,
|
|
const const_raw_buffer &buf)
|
|
{
|
|
std::ofstream file{path, std::ios::app};
|
|
file.write(reinterpret_cast<const char *>(data(buf)), size(buf));
|
|
return true;
|
|
}
|
|
|
|
std::string
|
|
ircd::fs::read(const std::string &path)
|
|
{
|
|
std::ifstream file{path};
|
|
std::noskipws(file);
|
|
std::istream_iterator<char> b{file};
|
|
std::istream_iterator<char> e{};
|
|
return std::string{b, e};
|
|
}
|
|
|
|
ircd::string_view
|
|
ircd::fs::read(const string_view &path,
|
|
const mutable_raw_buffer &buf)
|
|
{
|
|
return ircd::fs::read(std::string{path}, buf);
|
|
}
|
|
|
|
ircd::string_view
|
|
ircd::fs::read(const std::string &path,
|
|
const mutable_raw_buffer &buf)
|
|
{
|
|
std::ifstream file{path};
|
|
if(!file.good())
|
|
return {};
|
|
|
|
file.read(reinterpret_cast<char *>(data(buf)), size(buf));
|
|
return { reinterpret_cast<const char *>(data(buf)), size_t(file.gcount()) };
|
|
}
|
|
|
|
void
|
|
ircd::fs::chdir(const std::string &path)
|
|
try
|
|
{
|
|
fs::current_path(path);
|
|
}
|
|
catch(const fs::filesystem_error &e)
|
|
{
|
|
throw filesystem_error("%s", e.what());
|
|
}
|
|
|
|
bool
|
|
ircd::fs::mkdir(const std::string &path)
|
|
try
|
|
{
|
|
return fs::create_directory(path);
|
|
}
|
|
catch(const fs::filesystem_error &e)
|
|
{
|
|
throw filesystem_error("%s", e.what());
|
|
}
|
|
|
|
std::string
|
|
ircd::fs::cwd()
|
|
try
|
|
{
|
|
return fs::current_path().string();
|
|
}
|
|
catch(const fs::filesystem_error &e)
|
|
{
|
|
throw filesystem_error("%s", e.what());
|
|
}
|
|
|
|
std::vector<std::string>
|
|
ircd::fs::ls_recursive(const std::string &path)
|
|
try
|
|
{
|
|
const fs::recursive_directory_iterator end;
|
|
fs::recursive_directory_iterator it(path);
|
|
|
|
std::vector<std::string> ret;
|
|
std::transform(it, end, std::back_inserter(ret), []
|
|
(const auto &ent)
|
|
{
|
|
return ent.path().string();
|
|
});
|
|
|
|
return ret;
|
|
}
|
|
catch(const fs::filesystem_error &e)
|
|
{
|
|
throw filesystem_error("%s", e.what());
|
|
}
|
|
|
|
std::vector<std::string>
|
|
ircd::fs::ls(const std::string &path)
|
|
try
|
|
{
|
|
static const fs::directory_iterator end;
|
|
fs::directory_iterator it(path);
|
|
|
|
std::vector<std::string> ret;
|
|
std::transform(it, end, std::back_inserter(ret), []
|
|
(const auto &ent)
|
|
{
|
|
return ent.path().string();
|
|
});
|
|
|
|
return ret;
|
|
}
|
|
catch(const fs::filesystem_error &e)
|
|
{
|
|
throw filesystem_error("%s", e.what());
|
|
}
|
|
|
|
size_t
|
|
ircd::fs::size(const string_view &path)
|
|
{
|
|
return ircd::fs::size(std::string{path});
|
|
}
|
|
|
|
size_t
|
|
ircd::fs::size(const std::string &path)
|
|
{
|
|
return fs::file_size(path);
|
|
}
|
|
|
|
bool
|
|
ircd::fs::is_reg(const std::string &path)
|
|
try
|
|
{
|
|
return fs::is_regular_file(path);
|
|
}
|
|
catch(const fs::filesystem_error &e)
|
|
{
|
|
throw filesystem_error("%s", e.what());
|
|
}
|
|
|
|
bool
|
|
ircd::fs::is_dir(const std::string &path)
|
|
try
|
|
{
|
|
return fs::is_directory(path);
|
|
}
|
|
catch(const fs::filesystem_error &e)
|
|
{
|
|
throw filesystem_error("%s", e.what());
|
|
}
|
|
|
|
bool
|
|
ircd::fs::exists(const std::string &path)
|
|
try
|
|
{
|
|
return boost::filesystem::exists(path);
|
|
}
|
|
catch(const fs::filesystem_error &e)
|
|
{
|
|
throw filesystem_error("%s", e.what());
|
|
}
|
|
|
|
std::string
|
|
ircd::fs::make_path(const std::initializer_list<std::string> &list)
|
|
{
|
|
fs::path ret;
|
|
for(const auto &s : list)
|
|
ret /= fs::path(s);
|
|
|
|
return ret.string();
|
|
}
|
|
|
|
const char *
|
|
ircd::fs::get(index index)
|
|
noexcept try
|
|
{
|
|
return std::get<PATH>(paths.at(index)).c_str();
|
|
}
|
|
catch(const std::out_of_range &e)
|
|
{
|
|
return nullptr;
|
|
}
|
|
|
|
const char *
|
|
ircd::fs::name(index index)
|
|
noexcept try
|
|
{
|
|
return std::get<NAME>(paths.at(index)).c_str();
|
|
}
|
|
catch(const std::out_of_range &e)
|
|
{
|
|
return nullptr;
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// linux aio
|
|
//
|
|
|
|
#ifndef IRCD_USE_AIO
|
|
|
|
struct ircd::fs::aio
|
|
{
|
|
aio() {}
|
|
~aio() noexcept {}
|
|
};
|
|
|
|
#else
|
|
|
|
struct ircd::fs::aio
|
|
{
|
|
static constexpr const size_t &MAX_EVENTS
|
|
{
|
|
64
|
|
};
|
|
|
|
asio::posix::stream_descriptor resfd
|
|
{
|
|
*ircd::ios, int(syscall(::eventfd, 0, EFD_NONBLOCK))
|
|
};
|
|
|
|
aio_context_t idp
|
|
{
|
|
0
|
|
};
|
|
|
|
void handle_ready(const error_code &ec)
|
|
noexcept
|
|
{
|
|
std::array<io_event, MAX_EVENTS> events;
|
|
|
|
const auto nr
|
|
{
|
|
syscall<SYS_io_getevents>(idp, 0, events.size(), events.data(), nullptr)
|
|
};
|
|
|
|
for(ssize_t i(0); i < nr; ++i)
|
|
{
|
|
auto &event{events[i]};
|
|
auto &ctx{*reinterpret_cast<ctx::ctx *>(event.data)};
|
|
auto &cb{*reinterpret_cast<iocb *>(event.obj)};
|
|
cb.aio_data = event.res;
|
|
ircd::ctx::notify(ctx);
|
|
}
|
|
}
|
|
|
|
std::string read(const std::string &path);
|
|
|
|
aio();
|
|
~aio() noexcept;
|
|
};
|
|
|
|
ircd::fs::aio::aio()
|
|
{
|
|
syscall<SYS_io_setup>(MAX_EVENTS, &idp);
|
|
resfd.async_wait(resfd.wait_read, std::bind(&aio::handle_ready, this, ph::_1));
|
|
|
|
auto test{[this]
|
|
{
|
|
const auto got{this->read("/etc/passwd")};
|
|
std::cout << "got: " << got << std::endl;
|
|
}};
|
|
|
|
ircd::context
|
|
{
|
|
"aiotest", context::POST | context::DETACH, test
|
|
};
|
|
}
|
|
|
|
ircd::fs::aio::~aio()
|
|
noexcept
|
|
{
|
|
syscall<SYS_io_destroy>(idp);
|
|
}
|
|
|
|
/// Reads the file at path into a string; yields your ircd::ctx.
|
|
///
|
|
std::string
|
|
ircd::fs::aio::read(const std::string &path)
|
|
{
|
|
const auto fd
|
|
{
|
|
syscall(::open, path.c_str(), O_CLOEXEC, O_RDONLY)
|
|
};
|
|
|
|
const unwind close{[&fd]
|
|
{
|
|
syscall(::close, fd);
|
|
}};
|
|
|
|
struct stat stat;
|
|
syscall(::fstat, fd, &stat);
|
|
const auto &size{stat.st_size};
|
|
|
|
std::string ret(size, char{});
|
|
const mutable_buffer buf
|
|
{
|
|
const_cast<char *>(ret.data()), ret.size()
|
|
};
|
|
|
|
struct iocb cb{0};
|
|
cb.aio_flags = IOCB_FLAG_RESFD;
|
|
cb.aio_reqprio = 0;
|
|
cb.aio_resfd = resfd.native_handle();
|
|
cb.aio_data = uintptr_t(ctx::current);
|
|
|
|
cb.aio_lio_opcode = IOCB_CMD_PREAD;
|
|
cb.aio_fildes = fd;
|
|
cb.aio_buf = uintptr_t(buffer::data(buf));
|
|
cb.aio_nbytes = buffer::size(buf);
|
|
cb.aio_offset = 0;
|
|
|
|
struct iocb *cbs[]
|
|
{
|
|
&cb
|
|
};
|
|
|
|
syscall<SYS_io_submit>(idp, 1, &cbs); // there
|
|
ctx::wait(); // back
|
|
|
|
const ssize_t &bytes
|
|
{
|
|
reinterpret_cast<const ssize_t &>(cb.aio_data)
|
|
};
|
|
|
|
assert(bytes >= 0);
|
|
ret.resize(size_t(bytes));
|
|
|
|
return ret;
|
|
}
|
|
|
|
#endif
|