mirror of
https://github.com/matrix-construct/construct
synced 2024-09-09 02:01:32 +02:00
218 lines
4.9 KiB
C++
218 lines
4.9 KiB
C++
/*
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* charybdis: 21st Century IRC++d
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*
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* Copyright (C) 2016 Charybdis Development Team
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* Copyright (C) 2016 Jason Volk <jason@zemos.net>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice is present in all copies.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#pragma once
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#define HAVE_IRCD_M_ID_H
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namespace ircd::m
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{
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IRCD_M_EXCEPTION(error, INVALID_MXID, http::BAD_REQUEST)
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IRCD_M_EXCEPTION(INVALID_MXID, BAD_SIGIL, http::BAD_REQUEST)
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IRCD_OVERLOAD(generate)
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struct id;
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}
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//
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// Interface to a string representing an mxid. The m::id itself is just a
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// string_view over some existing data. m::id::buf is an m::id with an
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// internal array providing the buffer.
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//
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struct ircd::m::id
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:string_view
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{
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struct event;
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struct user;
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struct room;
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struct alias;
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template<class T, size_t SIZE = 256> struct buf;
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struct parser;
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struct generator;
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enum sigil :char;
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protected:
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struct parser static const parser;
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public:
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// Extract elements
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string_view local() const { return split(*this, ':').first; }
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string_view host() const { return split(*this, ':').second; }
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string_view name() const { return lstrip(local(), at(0)); }
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string_view hostname() const;
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uint16_t hostport() const;
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IRCD_USING_OVERLOAD(generate, m::generate);
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id(const enum sigil &, const mutable_buffer &, const generate_t &, const string_view &host);
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id(const enum sigil &, const mutable_buffer &, const string_view &name, const string_view &host);
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id(const enum sigil &, const mutable_buffer &, const string_view &id);
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id(const enum sigil &, const string_view &id);
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id(const string_view &id);
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id() = default;
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};
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enum ircd::m::id::sigil
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:char
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{
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EVENT = '$',
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USER = '@',
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ROOM = '!',
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ALIAS = '#',
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};
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namespace ircd::m
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{
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id::sigil sigil(const char &c);
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id::sigil sigil(const string_view &id);
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const char *reflect(const id::sigil &);
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// Checks
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bool valid_sigil(const char &c);
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bool valid_sigil(const string_view &id);
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bool valid(const id::sigil &, const string_view &) noexcept;
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bool valid_local(const id::sigil &, const string_view &); // Local part is valid
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void validate(const id::sigil &, const string_view &); // valid() | throws
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}
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//
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// convenience typedefs
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//
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struct ircd::m::id::event
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:ircd::m::id
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{
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using buf = m::id::buf<event>;
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template<class... args> event(args&&... a) :m::id{EVENT, std::forward<args>(a)...} {}
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event() = default;
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};
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struct ircd::m::id::user
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:ircd::m::id
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{
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using buf = m::id::buf<user>;
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template<class... args> user(args&&... a) :m::id{USER, std::forward<args>(a)...} {}
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user() = default;
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};
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struct ircd::m::id::room
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:ircd::m::id
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{
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using buf = m::id::buf<room>;
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template<class... args> room(args&&... a) :m::id{ROOM, std::forward<args>(a)...} {}
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room() = default;
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};
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struct ircd::m::id::alias
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:ircd::m::id
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{
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using buf = m::id::buf<alias>;
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template<class... args> alias(args&&... a) :m::id{ALIAS, std::forward<args>(a)...} {}
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alias() = default;
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};
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/// ID object backed by an internal buffer of wost-case size.
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///
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template<class T,
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size_t MAX = 256>
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struct ircd::m::id::buf
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:T
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{
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static constexpr const size_t SIZE
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{
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MAX
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};
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private:
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fixed_buffer<mutable_buffer, SIZE> b;
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public:
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operator const fixed_buffer<mutable_buffer, SIZE> &() const
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{
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return b;
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}
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operator mutable_buffer()
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{
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return b;
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}
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template<class... args>
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buf(args&&... a)
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:T{b, std::forward<args>(a)...}
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{}
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buf() = default;
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buf(buf &&other) noexcept
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:T{b, std::move(other)}
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{}
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buf(const buf &other)
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:T{b, other}
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{}
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buf &operator=(const buf &other)
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{
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static_cast<T &>(*this) = T{b, other};
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return *this;
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}
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buf &operator=(buf &&other) noexcept
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{
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static_cast<T &>(*this) = T{b, std::move(other)};
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return *this;
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}
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buf &operator=(const string_view &s)
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{
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static_cast<T &>(*this) = T{b, s};
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return *this;
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}
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};
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inline uint16_t
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ircd::m::id::hostport()
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const try
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{
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const auto port
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{
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split(host(), ':').second
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};
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return port? lex_cast<uint16_t>(port) : 8448;
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}
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catch(const std::exception &e)
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{
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return 8448;
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}
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inline ircd::string_view
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ircd::m::id::hostname()
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const
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{
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return split(host(), ':').first;
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}
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