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construct/ircd/resource.cc
2017-03-13 14:43:27 -07:00

239 lines
7.1 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.
*/
#include <ircd/socket.h>
namespace ircd {
IRCD_INIT_PRIORITY(STD_CONTAINER)
decltype(resource::resources)
resource::resources
{};
} // namespace ircd
ircd::resource::resource(const char *const &name,
const char *const &description)
:name{name}
,description{description}
,resources_it{[this, &name]
{
const auto iit(resources.emplace(this->name, this));
if(!iit.second)
throw error("resource \"%s\" already registered", name);
return iit.first;
}()}
{
log::info("Registered resource \"%s\" by handler @ %p", name, this);
}
ircd::resource::~resource()
noexcept
{
resources.erase(resources_it);
log::info("Unregistered resource \"%s\" by handler @ %p", name, this);
}
void
ircd::resource::operator()(client &client,
parse::context &pc,
const http::request::head &head)
const try
{
const auto &method(*methods.at(head.method));
http::request::body content{pc, head};
resource::request request
{
head, content
};
response r(method(client, request));
}
catch(const std::out_of_range &e)
{
throw http::error(http::METHOD_NOT_ALLOWED);
}
ircd::resource::method::method(struct resource &resource,
const char *const &name,
const handler &handler,
const std::initializer_list<member *> &members)
:function{handler}
,name{name}
,resource{&resource}
,methods_it{[this, &name]
{
const auto iit(this->resource->methods.emplace(this->name, this));
if(!iit.second)
throw error("resource \"%s\" already registered", name);
return iit.first;
}()}
{
for(const auto &member : members)
this->members.emplace(member->name, member);
}
ircd::resource::method::~method()
noexcept
{
resource->methods.erase(methods_it);
}
ircd::resource::response::response(client &client,
const json::obj &doc,
const http::code &code)
{
char cbuf[1024];
mutable_buffer buf(cbuf, sizeof(cbuf));
response(client, serialize(doc, data(buf), data(buf) + size(buf)), code);
}
ircd::resource::response::response(client &client,
const json::doc &doc,
const http::code &code)
{
char status_line[64]; const auto status_line_len
{
snprintf(status_line, sizeof(status_line), "HTTP/1.1 %u %s\r\n",
uint(code),
http::reason[code].data())
};
char server_line[128]; const auto server_line_len
{
snprintf(server_line, sizeof(server_line), "Server: %s (IRCd) %s\r\n",
BRANDING_NAME,
BRANDING_VERSION)
};
const time_t ltime(time(nullptr));
struct tm *const tm(localtime(&ltime));
char date_line[64]; const auto date_line_len
{
strftime(date_line, sizeof(date_line), "Date: %a, %d %b %Y %T %z\r\n", tm)
};
char content_len[64]; const auto content_len_len
{
snprintf(content_len, sizeof(content_len), "Content-Length: %zu\r\n",
doc.size())
};
const const_buffers iov
{
{ status_line, size_t(status_line_len) },
{ server_line, size_t(server_line_len) },
{ date_line, size_t(date_line_len) },
{ content_len, size_t(content_len_len) },
{ "\r\n", 2 },
{ doc.data(), doc.size() }
};
client.sock->write(iov);
}
ircd::resource::response::~response()
noexcept
{
}
ircd::resource::member::member(const char *const &name,
const enum json::type &type,
validator valid)
:name{name}
,type{type}
,valid{std::move(valid)}
{
}
//
// Museum of historical comments
//
// parse.c (1990 - 2016)
//
/* ok, fake prefix happens naturally during a burst on a nick
* collision with TS5, we cant kill them because one client has to
* survive, so we just send an error.
*/
/* meepfoo is a nickname (ignore)
* #XXXXXXXX is a UID (KILL)
* #XX is a SID (SQUIT)
* meep.foo is a server (SQUIT)
*/
/*
* *WARNING*
* Numerics are mostly error reports. If there is something
* wrong with the message, just *DROP* it! Don't even think of
* sending back a neat error message -- big danger of creating
* a ping pong error message...
*/
/*
* Prepare the parameter portion of the message into 'buffer'.
* (Because the buffer is twice as large as the message buffer
* for the socket, no overflow can occur here... ...on current
* assumptions--bets are off, if these are changed --msa)
* Note: if buffer is non-empty, it will begin with SPACE.
*/
/*
* We shouldn't get numerics sent to us,
* any numerics we do get indicate a bug somewhere..
*/
/* ugh. this is here because of nick collisions. when two servers
* relink, they burst each other their nicks, then perform collides.
* if there is a nick collision, BOTH servers will kill their own
* nicks, and BOTH will kill the other servers nick, which wont exist,
* because it will have been already killed by the local server.
*
* unfortunately, as we cant guarantee other servers will do the
* "right thing" on a nick collision, we have to keep both kills.
* ergo we need to ignore ERR_NOSUCHNICK. --fl_
*/
/* quick comment. This _was_ tried. i.e. assume the other servers
* will do the "right thing" and kill a nick that is colliding.
* unfortunately, it did not work. --Dianora
*/
/* note, now we send PING on server connect, we can
* also get ERR_NOSUCHSERVER..
*/
/* This message changed direction (nick collision?)
* ignore it.
*/
/* csircd will send out unknown umode flag for +a (admin), drop it here. */
/* Fake it for server hiding, if its our client */
/* bit of a hack.
* I don't =really= want to waste a bit in a flag
* number_of_nick_changes is only really valid after the client
* is fully registered..
*/