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construct/include/ircd/resource.h
Jason Volk d9a4f06bf6 ircd: Employ namespace scope extensions from c++1z/gnu++14.
This is not a move to c++17. If the compiler happens to have support
for c++17 namespace scope resolution, they have been kind enough to
backport it to gnu++14. This limits our support for really old c++14
compilers, but that was limited anyway. GCC 6.1 and clang 3.6 tested.
2017-09-08 03:47:46 -07:00

133 lines
3.5 KiB
C++

/*
* Copyright (C) 2016 Charybdis Development Team
* Copyright (C) 2016 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.
*/
#pragma once
#define HAVE_IRCD_RESOURCE_H
namespace ircd
{
struct resource;
}
struct ircd::resource
{
IRCD_EXCEPTION(ircd::error, error)
struct method;
struct request;
struct response;
enum flag
{
DIRECTORY = 0x01,
};
struct opts
{
flag flags{flag(0)};
string_view description;
};
static std::map<string_view, resource *, iless> resources;
static std::map<std::string, client *, std::less<>> tokens; //TODO: XXX
string_view path;
string_view description;
flag flags;
std::map<string_view, method *> methods;
unique_const_iterator<decltype(resources)> resources_it;
private:
virtual void handle_request(client &, method &, resource::request &);
public:
method &operator[](const string_view &path);
void operator()(client &, parse::capstan &, const http::request::head &);
resource(const string_view &path, const string_view &description, opts = {{}});
resource(const string_view &path, opts = {{}});
resource() = default;
virtual ~resource() noexcept;
static resource &find(string_view path);
};
struct ircd::resource::request
:json::object
{
template<class> struct body;
const http::request::head &head;
http::request::content &content;
http::query::string query;
request(const http::request::head &head, http::request::content &content, http::query::string query);
};
template<class tuple>
struct ircd::resource::request::body
:tuple
{
body(const resource::request &);
};
struct ircd::resource::response
{
response(client &, const string_view &str, const string_view &ct = "text/plain; charset=utf8", const http::code & = http::OK);
response(client &, const json::object & = "{}", const http::code & = http::OK);
response(client &, const json::index &, const http::code & = http::OK);
response(client &, const http::code &, const json::index &);
response() = default;
};
struct ircd::resource::method
{
enum flag
{
REQUIRES_AUTH = 0x01,
RATE_LIMITED = 0x02,
};
struct opts
{
flag flags{flag(0)};
};
using handler = std::function<response (client &, request &)>;
string_view name;
struct resource *resource;
handler function;
flag flags;
unique_const_iterator<decltype(resource::methods)> methods_it;
public:
virtual response operator()(client &, request &);
method(struct resource &, const string_view &name, const handler &, opts = {{}});
virtual ~method() noexcept;
};
template<class tuple>
ircd::resource::request::body<tuple>::body(const resource::request &request)
:tuple{request}
{
}