mirror of
https://github.com/matrix-construct/construct
synced 2024-09-08 17:55:47 +02:00
877 lines
17 KiB
C++
877 lines
17 KiB
C++
// The Construct
|
|
//
|
|
// Copyright (C) The Construct Developers, Authors & Contributors
|
|
// Copyright (C) 2016-2020 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. The
|
|
// full license for this software is available in the LICENSE file.
|
|
|
|
namespace ircd::m::bridge
|
|
{
|
|
static bool pick_alias(const config &, const event::idx &, const event &, const json::array &, const m::room::alias &);
|
|
static bool pick_alias(const config &, const event::idx &, const event &, const room &, const json::array &);
|
|
static bool pick_room(const config &, const event::idx &, const event &, const room &, const json::array &);
|
|
static bool pick_user(const config &, const event::idx &, const event &, const json::array &, const m::user::id &);
|
|
static bool pick_user(const config &, const event::idx &, const event &, const room &, const json::array &);
|
|
static bool pick(const config &, const event::idx &, const event &);
|
|
static bool append(const config &, json::stack::array &, events::range &, size_t &, const event::idx &, const event &);
|
|
static size_t make_txn(const config &, json::stack &, events::range &);
|
|
static event::idx worker_handle(const config &, const net::hostport &, const events::range &, window_buffer);
|
|
static void worker_loop(const config &, const rfc3986::uri &, const mutable_buffer &);
|
|
static void worker(std::string event, std::string event_id);
|
|
static bool start(const event &, const config &);
|
|
static bool stop(const string_view &id);
|
|
static void handle_event(const event &, vm::eval &);
|
|
static void handle_redact(const event &, vm::eval &);
|
|
static void handle_config(const event &, vm::eval &);
|
|
static void fini();
|
|
static void init();
|
|
|
|
extern conf::item<bool> enable;
|
|
extern conf::item<seconds> backoff;
|
|
extern conf::item<seconds> txn_timeout;
|
|
extern conf::item<size_t> txn_bufsize;
|
|
extern ctx::dock worker_dock;
|
|
extern std::map<std::string, context> workers;
|
|
extern hookfn<vm::eval &> config_hook;
|
|
extern hookfn<vm::eval &> redact_hook;
|
|
extern hookfn<vm::eval &> notify_hook;
|
|
extern ircd::run::changed quit_handler;
|
|
}
|
|
|
|
ircd::mapi::header
|
|
IRCD_MODULE
|
|
{
|
|
"Bridges (Application Services)",
|
|
ircd::m::bridge::init,
|
|
ircd::m::bridge::fini,
|
|
};
|
|
|
|
decltype(ircd::m::bridge::enable)
|
|
ircd::m::bridge::enable
|
|
{
|
|
{ "name", "ircd.m.bridge.enable" },
|
|
{ "default", true },
|
|
};
|
|
|
|
decltype(ircd::m::bridge::backoff)
|
|
ircd::m::bridge::backoff
|
|
{
|
|
{ "name", "ircd.m.bridge.backoff" },
|
|
{ "default", 15L },
|
|
};
|
|
|
|
decltype(ircd::m::bridge::txn_timeout)
|
|
ircd::m::bridge::txn_timeout
|
|
{
|
|
{ "name", "ircd.m.bridge.txn.timeout" },
|
|
{ "default", 10L },
|
|
};
|
|
|
|
decltype(ircd::m::bridge::txn_bufsize)
|
|
ircd::m::bridge::txn_bufsize
|
|
{
|
|
{ "name", "ircd.m.bridge.txn.buf.size" },
|
|
{ "default", long(event::MAX_SIZE * 8) },
|
|
};
|
|
|
|
decltype(ircd::m::bridge::worker_dock)
|
|
ircd::m::bridge::worker_dock;
|
|
|
|
decltype(ircd::m::bridge::workers)
|
|
ircd::m::bridge::workers;
|
|
|
|
decltype(ircd::m::bridge::config_hook)
|
|
ircd::m::bridge::config_hook
|
|
{
|
|
handle_config,
|
|
{
|
|
{ "_site", "vm.effect" },
|
|
{ "type", "ircd.bridge" },
|
|
{ "origin", my_host() },
|
|
}
|
|
};
|
|
|
|
decltype(ircd::m::bridge::redact_hook)
|
|
ircd::m::bridge::redact_hook
|
|
{
|
|
handle_redact,
|
|
{
|
|
{ "_site", "vm.effect" },
|
|
{ "type", "m.room.redaction" },
|
|
{ "origin", my_host() },
|
|
}
|
|
};
|
|
|
|
decltype(ircd::m::bridge::notify_hook)
|
|
ircd::m::bridge::notify_hook
|
|
{
|
|
handle_event,
|
|
{
|
|
{ "_site", "vm.notify" },
|
|
}
|
|
};
|
|
|
|
decltype(ircd::m::bridge::quit_handler)
|
|
ircd::m::bridge::quit_handler
|
|
{
|
|
run::level::QUIT, []
|
|
{
|
|
for(auto &[name, worker] : workers)
|
|
worker.terminate();
|
|
}
|
|
};
|
|
|
|
void
|
|
ircd::m::bridge::init()
|
|
{
|
|
config::for_each([]
|
|
(const event::idx &event_idx, const event &event, const config &config)
|
|
{
|
|
log::logf
|
|
{
|
|
log, log::level::DEBUG,
|
|
"Found configuration for '%s' in %s by %s",
|
|
json::get<"id"_>(config),
|
|
json::get<"room_id"_>(event),
|
|
string_view{event.event_id},
|
|
};
|
|
|
|
if(!enable)
|
|
return true;
|
|
|
|
start(event, config);
|
|
return true;
|
|
});
|
|
}
|
|
|
|
void
|
|
ircd::m::bridge::fini()
|
|
{
|
|
for(auto &[name, worker] : workers)
|
|
worker.terminate();
|
|
|
|
if(!workers.empty())
|
|
log::debug
|
|
{
|
|
log, "Waiting for %zu bridge workers...",
|
|
workers.size(),
|
|
};
|
|
|
|
for(auto &[name, worker] : workers)
|
|
worker.join();
|
|
}
|
|
|
|
void
|
|
ircd::m::bridge::handle_config(const m::event &event,
|
|
vm::eval &eval)
|
|
try
|
|
{
|
|
if(!enable)
|
|
return;
|
|
|
|
const config config
|
|
{
|
|
at<"content"_>(event)
|
|
};
|
|
|
|
// the state_key has to match the id for now
|
|
if(json::get<"id"_>(config) != json::get<"state_key"_>(event))
|
|
return;
|
|
|
|
const m::room::id room_id
|
|
{
|
|
json::get<"room_id"_>(event)
|
|
};
|
|
|
|
// Bridge's id and the room localpart have to match or this is a bogus
|
|
if(json::get<"id"_>(config) != room_id.localname())
|
|
return;
|
|
|
|
const m::user::id sender
|
|
{
|
|
json::get<"sender"_>(event)
|
|
};
|
|
|
|
if(!is_oper(sender))
|
|
return;
|
|
|
|
log::logf
|
|
{
|
|
log, log::level::DEBUG,
|
|
"Updating configuration for '%s' in %s by %s",
|
|
json::get<"id"_>(config),
|
|
json::get<"room_id"_>(event),
|
|
string_view{event.event_id},
|
|
};
|
|
|
|
const bool stopped
|
|
{
|
|
stop(at<"id"_>(config))
|
|
};
|
|
|
|
const bool started
|
|
{
|
|
start(event, config)
|
|
};
|
|
|
|
log::info
|
|
{
|
|
log, "Bridge '%s' [stop:%b start:%b] with updated configuration %s",
|
|
at<"id"_>(config),
|
|
stopped,
|
|
started,
|
|
string_view{event.event_id},
|
|
};
|
|
}
|
|
catch(const ctx::interrupted &)
|
|
{
|
|
throw;
|
|
}
|
|
catch(const std::exception &e)
|
|
{
|
|
log::error
|
|
{
|
|
log, "Failed to handle bridge config update in %s :%s",
|
|
string_view{event.event_id},
|
|
e.what(),
|
|
};
|
|
}
|
|
|
|
void
|
|
ircd::m::bridge::handle_redact(const m::event &event,
|
|
vm::eval &eval)
|
|
try
|
|
{
|
|
if(!enable)
|
|
return;
|
|
|
|
const m::room::id room_id
|
|
{
|
|
at<"room_id"_>(event)
|
|
};
|
|
|
|
if(!workers.count(room_id.localname()))
|
|
return;
|
|
|
|
const m::user::id sender
|
|
{
|
|
at<"sender"_>(event)
|
|
};
|
|
|
|
if(!is_oper(sender))
|
|
return;
|
|
|
|
const m::event::id event_id
|
|
{
|
|
at<"redacts"_>(event)
|
|
};
|
|
|
|
const m::event::fetch redacted
|
|
{
|
|
event_id
|
|
};
|
|
|
|
const config config
|
|
{
|
|
at<"content"_>(redacted)
|
|
};
|
|
|
|
// the state_key has to match the id for now
|
|
if(json::get<"id"_>(config) != json::get<"state_key"_>(redacted))
|
|
return;
|
|
|
|
// Bridge's id and the room localpart have to match or this is a bogus
|
|
if(json::get<"id"_>(config) != room_id.localname())
|
|
return;
|
|
|
|
const bool stopped
|
|
{
|
|
stop(at<"id"_>(config))
|
|
};
|
|
|
|
log::info
|
|
{
|
|
log, "Bridge worker '%s' terminated by redaction %s of config %s",
|
|
at<"id"_>(config),
|
|
string_view{event.event_id},
|
|
string_view{event_id},
|
|
};
|
|
}
|
|
catch(const ctx::interrupted &)
|
|
{
|
|
throw;
|
|
}
|
|
catch(const std::exception &e)
|
|
{
|
|
log::error
|
|
{
|
|
log, "Failed to handle bridge config redact in %s :%s",
|
|
string_view{event.event_id},
|
|
e.what(),
|
|
};
|
|
}
|
|
|
|
void
|
|
ircd::m::bridge::handle_event(const m::event &event,
|
|
vm::eval &eval)
|
|
try
|
|
{
|
|
if(eval.room_internal)
|
|
return;
|
|
|
|
if(!event.event_id)
|
|
return;
|
|
|
|
worker_dock.notify_all();
|
|
}
|
|
catch(const ctx::interrupted &)
|
|
{
|
|
throw;
|
|
}
|
|
catch(const std::exception &e)
|
|
{
|
|
log::critical
|
|
{
|
|
log, "Failed to handle %s notify :%s",
|
|
string_view{event.event_id},
|
|
e.what(),
|
|
};
|
|
}
|
|
|
|
bool
|
|
ircd::m::bridge::stop(const string_view &id)
|
|
{
|
|
const auto it
|
|
{
|
|
workers.find(id)
|
|
};
|
|
|
|
if(it == workers.end())
|
|
return false;
|
|
|
|
auto &context
|
|
{
|
|
it->second
|
|
};
|
|
|
|
context.terminate();
|
|
context.join();
|
|
workers.erase(it);
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
ircd::m::bridge::start(const m::event &event,
|
|
const config &config)
|
|
{
|
|
auto handle
|
|
{
|
|
std::bind(&bridge::worker, std::string(event.source), std::string(event.event_id))
|
|
};
|
|
|
|
const auto pit
|
|
{
|
|
workers.emplace
|
|
(
|
|
at<"id"_>(config), context
|
|
{
|
|
"m.bridge",
|
|
512_KiB,
|
|
context::POST,
|
|
std::move(handle),
|
|
}
|
|
)
|
|
};
|
|
|
|
return pit.second;
|
|
}
|
|
|
|
void
|
|
ircd::m::bridge::worker(const std::string event_,
|
|
const std::string event_id)
|
|
try
|
|
{
|
|
const m::event event
|
|
{
|
|
json::object{event_}, event_id
|
|
};
|
|
|
|
const bridge::config config
|
|
{
|
|
json::get<"content"_>(event)
|
|
};
|
|
|
|
const rfc3986::uri uri
|
|
{
|
|
at<"url"_>(config)
|
|
};
|
|
|
|
const unique_mutable_buffer buf
|
|
{
|
|
size_t(txn_bufsize)
|
|
};
|
|
|
|
log::notice
|
|
{
|
|
log, "Bridging to '%s' via %s by %s",
|
|
json::get<"id"_>(config),
|
|
uri.remote,
|
|
event_id,
|
|
};
|
|
|
|
run::barrier<ctx::interrupted> {};
|
|
const bool prelinking
|
|
{
|
|
server::prelink(uri.remote)
|
|
};
|
|
|
|
if(!prelinking)
|
|
log::warning
|
|
{
|
|
log, "Bridging to '%s' via %s may not be possible :%s",
|
|
json::get<"id"_>(config),
|
|
uri.remote,
|
|
server::errmsg(uri.remote),
|
|
};
|
|
|
|
worker_loop(config, uri, buf);
|
|
}
|
|
catch(const ctx::interrupted &)
|
|
{
|
|
throw;
|
|
}
|
|
catch(const std::exception &e)
|
|
{
|
|
log::error
|
|
{
|
|
log, "Worker failed to initialize :%s",
|
|
e.what(),
|
|
};
|
|
}
|
|
|
|
void
|
|
ircd::m::bridge::worker_loop(const config &config,
|
|
const rfc3986::uri &uri,
|
|
const mutable_buffer &buf)
|
|
try
|
|
{
|
|
const net::hostport target
|
|
{
|
|
uri.remote
|
|
};
|
|
|
|
auto since {vm::sequence::retired}; do
|
|
{
|
|
worker_dock.wait([&since]() noexcept
|
|
{
|
|
return since < vm::sequence::retired;
|
|
});
|
|
|
|
// Wait here if the bridge is down.
|
|
while(unlikely(server::errant(target)))
|
|
{
|
|
log::error
|
|
{
|
|
log, "Waiting for '%s' at %s with error :%s",
|
|
json::get<"id"_>(config),
|
|
uri.remote,
|
|
server::errmsg(target),
|
|
};
|
|
|
|
sleep(seconds(backoff));
|
|
continue;
|
|
}
|
|
|
|
const events::range range
|
|
{
|
|
since, vm::sequence::retired + 1
|
|
};
|
|
|
|
since = worker_handle(config, target, range, buf);
|
|
assert(since >= range.first);
|
|
assert(since <= range.second);
|
|
|
|
// Prevent spin for retrying the same range on handled exception.
|
|
if(unlikely(since == range.first))
|
|
{
|
|
sleep(seconds(backoff));
|
|
continue;
|
|
}
|
|
}
|
|
while(run::level == run::level::RUN);
|
|
}
|
|
catch(const ctx::interrupted &)
|
|
{
|
|
throw;
|
|
}
|
|
catch(const std::exception &e)
|
|
{
|
|
log::critical
|
|
{
|
|
log, "Worker unhandled :%s",
|
|
e.what(),
|
|
};
|
|
}
|
|
|
|
ircd::m::event::idx
|
|
ircd::m::bridge::worker_handle(const config &config,
|
|
const net::hostport &target,
|
|
const events::range &range_,
|
|
window_buffer buf)
|
|
try
|
|
{
|
|
size_t count {0};
|
|
auto range {range_};
|
|
buf([&config, &count, &range]
|
|
(const mutable_buffer &buf)
|
|
{
|
|
json::stack out
|
|
{
|
|
buf
|
|
};
|
|
|
|
count += make_txn(config, out, range);
|
|
return out.completed();
|
|
});
|
|
|
|
if(!count)
|
|
return range.second;
|
|
|
|
const json::object content
|
|
{
|
|
buf.completed()
|
|
};
|
|
|
|
buf = window_buffer
|
|
{
|
|
buf.remains()
|
|
};
|
|
|
|
// Generate URL for the PUT
|
|
char uribuf[448], txnidbuf[64];
|
|
const string_view url
|
|
{
|
|
make_uri(uribuf, config, fmt::sprintf
|
|
{
|
|
txnidbuf, "transactions/%lu", range.first,
|
|
})
|
|
};
|
|
|
|
log::debug
|
|
{
|
|
log, "[%s] PUT txn:%lu:%lu (%lu:%lu) events:%zu",
|
|
json::get<"id"_>(config),
|
|
range.first,
|
|
range.second,
|
|
range_.first,
|
|
range_.second,
|
|
count,
|
|
};
|
|
|
|
// HTTP request sans
|
|
http::request
|
|
{
|
|
buf,
|
|
host(target),
|
|
"PUT",
|
|
url,
|
|
size(string_view(content)),
|
|
"application/json; charset=utf-8"_sv,
|
|
};
|
|
|
|
// Outputs from consumed buffer
|
|
server::out out;
|
|
out.head = buf.completed();
|
|
out.content = content;
|
|
|
|
// Inputs to remaining buffer
|
|
server::in in;
|
|
in.head = buf.remains();
|
|
in.content = in.head;
|
|
|
|
// Send to bridge
|
|
server::request::opts sopts;
|
|
server::request req
|
|
{
|
|
target, std::move(out), std::move(in), &sopts
|
|
};
|
|
|
|
// Recv response
|
|
const auto code
|
|
{
|
|
req.get(seconds(txn_timeout))
|
|
};
|
|
|
|
log::logf
|
|
{
|
|
log, log::level::DEBUG,
|
|
"[%s] %u txn:%lu:%lu (%lu:%lu) events:%zu :%s",
|
|
json::get<"id"_>(config),
|
|
uint(code),
|
|
range.first,
|
|
range.second,
|
|
range_.first,
|
|
range_.second,
|
|
count,
|
|
http::status(code),
|
|
};
|
|
|
|
return range.second + 1;
|
|
}
|
|
catch(const ctx::interrupted &)
|
|
{
|
|
throw;
|
|
}
|
|
catch(const std::exception &e)
|
|
{
|
|
log::error
|
|
{
|
|
log, "worker handle range:%lu:%lu :%s",
|
|
range_.first,
|
|
range_.second,
|
|
e.what(),
|
|
};
|
|
|
|
return range_.first;
|
|
}
|
|
|
|
size_t
|
|
ircd::m::bridge::make_txn(const config &config,
|
|
json::stack &out,
|
|
events::range &range)
|
|
{
|
|
json::stack::object top
|
|
{
|
|
out
|
|
};
|
|
|
|
json::stack::array events
|
|
{
|
|
top, "events"
|
|
};
|
|
|
|
size_t count {0};
|
|
m::events::for_each(m::events::range{range}, [&]
|
|
(const event::idx &event_idx, const event &event)
|
|
{
|
|
if(!pick(config, event_idx, event))
|
|
return true;
|
|
|
|
if(!append(config, events, range, count, event_idx, event))
|
|
return false;
|
|
|
|
return true;
|
|
});
|
|
|
|
return count;
|
|
}
|
|
|
|
bool
|
|
ircd::m::bridge::append(const config &config,
|
|
json::stack::array &events,
|
|
events::range &range,
|
|
size_t &count,
|
|
const event::idx &event_idx,
|
|
const event &event)
|
|
{
|
|
event::append::opts opts;
|
|
opts.event_idx = &event_idx;
|
|
opts.query_txnid = false;
|
|
opts.query_prev_state = true;
|
|
opts.query_redacted = false;
|
|
event::append
|
|
{
|
|
events, event, opts
|
|
};
|
|
|
|
log::debug
|
|
{
|
|
log, "[%s] ADD %s in %s idx:%lu txn:%lu:%lu events:%zu buffer:%zu",
|
|
json::get<"id"_>(config),
|
|
string_view{event.event_id},
|
|
json::get<"room_id"_>(event),
|
|
event_idx,
|
|
range.first,
|
|
range.second,
|
|
count,
|
|
events.s->remaining(),
|
|
};
|
|
|
|
++count;
|
|
range.second = event_idx;
|
|
const bool sufficient_buffer
|
|
{
|
|
events.s->remaining() > event::MAX_SIZE + 16_KiB
|
|
};
|
|
|
|
return sufficient_buffer;
|
|
}
|
|
|
|
bool
|
|
ircd::m::bridge::pick(const config &config,
|
|
const event::idx &event_idx,
|
|
const event &event)
|
|
{
|
|
const room room
|
|
{
|
|
json::get<"room_id"_>(event)
|
|
};
|
|
|
|
if(internal(room))
|
|
return false;
|
|
|
|
const bridge::namespaces &namespaces
|
|
{
|
|
json::get<"namespaces"_>(config)
|
|
};
|
|
|
|
return false
|
|
|| pick_user(config, event_idx, event, room, json::get<"users"_>(namespaces))
|
|
|| pick_room(config, event_idx, event, room, json::get<"rooms"_>(namespaces))
|
|
|| pick_alias(config, event_idx, event, room, json::get<"aliases"_>(namespaces))
|
|
;
|
|
}
|
|
|
|
bool
|
|
ircd::m::bridge::pick_user(const config &config,
|
|
const event::idx &event_idx,
|
|
const event &event,
|
|
const room &room,
|
|
const json::array &namespaces)
|
|
{
|
|
const m::user::id &sender
|
|
{
|
|
json::get<"sender"_>(event)
|
|
};
|
|
|
|
// Bridged user is the sender
|
|
if(pick_user(config, event_idx, event, namespaces, sender))
|
|
return true;
|
|
|
|
// Bridged user is target of a membership state transition
|
|
if(json::get<"type"_>(event) == "m.room.member")
|
|
{
|
|
// event::conforms ensures this is always a valid user_id
|
|
const user::id &state_key
|
|
{
|
|
json::get<"state_key"_>(event)
|
|
};
|
|
|
|
if(pick_user(config, event_idx, event, namespaces, state_key))
|
|
return true;
|
|
}
|
|
|
|
const room::members members
|
|
{
|
|
room
|
|
};
|
|
|
|
// Bridged user is in the room.
|
|
return true
|
|
&& !namespaces.empty() // avoid this query io if there's nothing to match.
|
|
&& !members.for_each("join", my_host(), [&](const id::user &user_id)
|
|
{
|
|
return !pick_user(config, event_idx, event, namespaces, user_id);
|
|
});
|
|
}
|
|
|
|
bool
|
|
ircd::m::bridge::pick_user(const config &config,
|
|
const event::idx &event_idx,
|
|
const event &event,
|
|
const json::array &namespaces,
|
|
const user::id &user_id)
|
|
{
|
|
for(const json::object object : namespaces)
|
|
{
|
|
const bridge::namespace_ ns
|
|
{
|
|
object
|
|
};
|
|
|
|
const globular_imatch match
|
|
{
|
|
json::get<"regex"_>(ns)
|
|
};
|
|
|
|
if(match(user_id))
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
ircd::m::bridge::pick_room(const config &config,
|
|
const event::idx &event_idx,
|
|
const event &event,
|
|
const room &room,
|
|
const json::array &namespaces)
|
|
{
|
|
for(const json::object object : namespaces)
|
|
{
|
|
const bridge::namespace_ ns
|
|
{
|
|
object
|
|
};
|
|
|
|
const globular_imatch match
|
|
{
|
|
json::get<"regex"_>(ns)
|
|
};
|
|
|
|
if(match(room.room_id))
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
ircd::m::bridge::pick_alias(const config &config,
|
|
const event::idx &event_idx,
|
|
const event &event,
|
|
const room &room,
|
|
const json::array &namespaces)
|
|
{
|
|
const m::room::aliases aliases
|
|
{
|
|
room
|
|
};
|
|
|
|
return true
|
|
&& !namespaces.empty()
|
|
&& !aliases.for_each(my_host(), [&](const room::alias &alias)
|
|
{
|
|
return !pick_alias(config, event_idx, event, namespaces, alias);
|
|
});
|
|
}
|
|
|
|
bool
|
|
ircd::m::bridge::pick_alias(const config &config,
|
|
const event::idx &event_idx,
|
|
const event &event,
|
|
const json::array &namespaces,
|
|
const m::room::alias &room_alias)
|
|
{
|
|
for(const json::object object : namespaces)
|
|
{
|
|
const bridge::namespace_ ns
|
|
{
|
|
object
|
|
};
|
|
|
|
const globular_imatch match
|
|
{
|
|
json::get<"regex"_>(ns)
|
|
};
|
|
|
|
if(match(room_alias))
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|