mirror of
https://github.com/matrix-construct/construct
synced 2024-11-16 15:00:51 +01:00
142 lines
3.2 KiB
C++
142 lines
3.2 KiB
C++
/*
|
|
* Copyright (C) 2017 Charybdis Development Team
|
|
* Copyright (C) 2017 Jason Volk <jason@zemos.net>
|
|
*
|
|
* Permission to use, copy, modify, and/or distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice is present in all copies.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
|
|
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
|
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// hash.h
|
|
//
|
|
|
|
ircd::crh::hash::~hash()
|
|
noexcept
|
|
{
|
|
}
|
|
|
|
ircd::crh::hash &
|
|
ircd::crh::hash::operator+=(const const_buffer &buf)
|
|
{
|
|
update(buf);
|
|
return *this;
|
|
}
|
|
|
|
void
|
|
ircd::crh::hash::operator()(const mutable_raw_buffer &out,
|
|
const const_buffer &in)
|
|
{
|
|
update(in);
|
|
finalize(out);
|
|
}
|
|
|
|
void
|
|
ircd::crh::hash::finalize(const mutable_raw_buffer &buf)
|
|
const
|
|
{
|
|
extract(buf);
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// rand.h
|
|
//
|
|
|
|
decltype(ircd::rand::device) ircd::rand::device
|
|
{
|
|
// on linux: uses RDRND or /dev/urandom
|
|
// on windows: TODO: verify construction source
|
|
};
|
|
|
|
decltype(ircd::rand::mt) ircd::rand::mt
|
|
{
|
|
device()
|
|
};
|
|
|
|
decltype(ircd::rand::dict::alnum) ircd::rand::dict::alnum
|
|
{
|
|
"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
|
|
};
|
|
|
|
decltype(ircd::rand::dict::alpha) ircd::rand::dict::alpha
|
|
{
|
|
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
|
|
};
|
|
|
|
decltype(ircd::rand::dict::upper) ircd::rand::dict::upper
|
|
{
|
|
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
|
|
};
|
|
|
|
decltype(ircd::rand::dict::lower) ircd::rand::dict::lower
|
|
{
|
|
"abcdefghijklmnopqrstuvwxyz"
|
|
};
|
|
|
|
decltype(ircd::rand::dict::numeric) ircd::rand::dict::numeric
|
|
{
|
|
"0123456789"
|
|
};
|
|
|
|
std::string
|
|
ircd::rand::string(const std::string &dict,
|
|
const size_t &len)
|
|
{
|
|
std::string ret(len, char());
|
|
string(dict, len, reinterpret_cast<uint8_t *>(&ret.front()));
|
|
return ret;
|
|
}
|
|
|
|
ircd::string_view
|
|
ircd::rand::string(const std::string &dict,
|
|
const size_t &len,
|
|
char *const &buf,
|
|
const size_t &max)
|
|
{
|
|
if(unlikely(!max))
|
|
return { buf, max };
|
|
|
|
const auto size
|
|
{
|
|
std::min(len, max - 1)
|
|
};
|
|
|
|
buf[size] = '\0';
|
|
return string(dict, size, reinterpret_cast<uint8_t *>(buf));
|
|
}
|
|
|
|
ircd::string_view
|
|
ircd::rand::string(const std::string &dict,
|
|
const size_t &len,
|
|
uint8_t *const &buf)
|
|
{
|
|
std::uniform_int_distribution<size_t> dist
|
|
{
|
|
0, dict.size() - 1
|
|
};
|
|
|
|
std::generate(buf, buf + len, [&dict, &dist]
|
|
() -> uint8_t
|
|
{
|
|
return dict.at(dist(mt));
|
|
});
|
|
|
|
return string_view
|
|
{
|
|
reinterpret_cast<const char *>(buf), len
|
|
};
|
|
}
|