mirror of
https://github.com/matrix-construct/construct
synced 2024-11-01 03:18:54 +01:00
315 lines
7 KiB
C++
315 lines
7 KiB
C++
// Matrix Construct
|
|
//
|
|
// Copyright (C) Matrix Construct Developers, Authors & Contributors
|
|
// Copyright (C) 2016-2019 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
|
|
{
|
|
extern const event::keys::exclude event_append_exclude_keys;
|
|
extern const event::keys event_append_default_keys;
|
|
extern conf::item<bool> event_append_info;
|
|
extern log::log event_append_log;
|
|
}
|
|
|
|
decltype(ircd::m::event_append_log)
|
|
ircd::m::event_append_log
|
|
{
|
|
"m.event.append"
|
|
};
|
|
|
|
decltype(ircd::m::event_append_info)
|
|
ircd::m::event_append_info
|
|
{
|
|
{ "name", "ircd.m.event.append.info" },
|
|
{ "default", false },
|
|
{ "persist", false },
|
|
};
|
|
|
|
/// Default event property mask of keys which we strip from the event sent
|
|
/// to the client. This mask is applied only if the caller of event::append{}
|
|
/// did not supply their mask to apply. It is also inferior to the user's
|
|
/// filter if supplied.
|
|
decltype(ircd::m::event_append_exclude_keys)
|
|
ircd::m::event_append_exclude_keys
|
|
{
|
|
"auth_events",
|
|
"hashes",
|
|
"membership",
|
|
"origin",
|
|
"prev_state",
|
|
"signatures",
|
|
};
|
|
|
|
decltype(ircd::m::event_append_default_keys)
|
|
ircd::m::event_append_default_keys
|
|
{
|
|
event_append_exclude_keys
|
|
};
|
|
|
|
IRCD_MODULE_EXPORT
|
|
ircd::m::event::append::append(json::stack::array &array,
|
|
const event &event_,
|
|
const opts &opts)
|
|
:boolean{[&]
|
|
{
|
|
json::stack::object object
|
|
{
|
|
array
|
|
};
|
|
|
|
const bool ret
|
|
{
|
|
append
|
|
{
|
|
object, event_, opts
|
|
}
|
|
};
|
|
|
|
return ret;
|
|
}}
|
|
{
|
|
}
|
|
|
|
IRCD_MODULE_EXPORT
|
|
ircd::m::event::append::append(json::stack::object &object,
|
|
const event &event,
|
|
const opts &opts)
|
|
:boolean{[&]
|
|
{
|
|
const bool has_event_idx
|
|
{
|
|
opts.event_idx && *opts.event_idx
|
|
};
|
|
|
|
const bool has_client_txnid
|
|
{
|
|
opts.client_txnid && *opts.client_txnid
|
|
};
|
|
|
|
const bool has_user
|
|
{
|
|
opts.user_id && opts.user_room
|
|
};
|
|
|
|
const bool sender_is_user
|
|
{
|
|
has_user && json::get<"sender"_>(event) == *opts.user_id
|
|
};
|
|
|
|
const auto txnid_idx
|
|
{
|
|
!has_client_txnid && sender_is_user && opts.query_txnid?
|
|
opts.user_room->get(std::nothrow, "ircd.client.txnid", event.event_id):
|
|
0UL
|
|
};
|
|
|
|
#if defined(RB_DEBUG) && 0
|
|
if(!has_client_txnid && !txnid_idx && sender_is_user && opts.query_txnid)
|
|
log::dwarning
|
|
{
|
|
log, "Could not find transaction_id for %s from %s in %s",
|
|
string_view{event.event_id},
|
|
json::get<"sender"_>(event),
|
|
json::get<"room_id"_>(event)
|
|
};
|
|
#endif
|
|
|
|
// Assertions that the event being appended has some required fields. This
|
|
// is a central butt-end test of data coming through the system to here.
|
|
assert(event.event_id);
|
|
assert(defined(json::get<"type"_>(event)));
|
|
assert(defined(json::get<"sender"_>(event)));
|
|
//assert(json::get<"origin_server_ts"_>(event));
|
|
//assert(json::get<"origin_server_ts"_>(event) != json::undefined_number);
|
|
if(unlikely(!defined(json::get<"type"_>(event))))
|
|
return false;
|
|
|
|
if(unlikely(!defined(json::get<"sender"_>(event))))
|
|
return false;
|
|
|
|
const bool is_state
|
|
{
|
|
defined(json::get<"state_key"_>(event))
|
|
};
|
|
|
|
const bool query_redacted
|
|
{
|
|
has_event_idx &&
|
|
opts.query_redacted &&
|
|
!is_state &&
|
|
(!opts.room_depth || *opts.room_depth > json::get<"depth"_>(event))
|
|
};
|
|
|
|
if(query_redacted && m::redacted(*opts.event_idx))
|
|
{
|
|
log::debug
|
|
{
|
|
log, "Not sending event '%s' because redacted.",
|
|
string_view{event.event_id},
|
|
};
|
|
|
|
return false;
|
|
}
|
|
|
|
const bool check_ignores
|
|
{
|
|
has_user && !is_state
|
|
};
|
|
|
|
if(check_ignores && *opts.user_id != json::get<"sender"_>(event))
|
|
{
|
|
const m::user::ignores ignores
|
|
{
|
|
*opts.user_id
|
|
};
|
|
|
|
if(ignores.enforce("events") && ignores.has(json::get<"sender"_>(event)))
|
|
{
|
|
log::debug
|
|
{
|
|
log, "Not sending event '%s' because '%s' is ignored by '%s'",
|
|
string_view{event.event_id},
|
|
json::get<"sender"_>(event),
|
|
string_view{*opts.user_id}
|
|
};
|
|
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if(!json::get<"event_id"_>(event))
|
|
json::stack::member
|
|
{
|
|
object, "event_id", event.event_id
|
|
};
|
|
|
|
const bool query_prev_state
|
|
{
|
|
has_event_idx && opts.query_prev_state && is_state
|
|
};
|
|
|
|
if(query_prev_state)
|
|
{
|
|
const auto prev_idx
|
|
{
|
|
room::state::prev(*opts.event_idx)
|
|
};
|
|
|
|
m::get(std::nothrow, prev_idx, "content", [&object]
|
|
(const json::object &content)
|
|
{
|
|
json::stack::member
|
|
{
|
|
object, "prev_content", content
|
|
};
|
|
});
|
|
}
|
|
|
|
// Get the list of properties to send to the client so we can strip
|
|
// the remaining and save b/w
|
|
// TODO: m::filter
|
|
const event::keys &keys
|
|
{
|
|
opts.keys?
|
|
*opts.keys:
|
|
event_append_default_keys
|
|
};
|
|
|
|
// Append the event members
|
|
for_each(event, [&keys, &object]
|
|
(const auto &key, const auto &val_)
|
|
{
|
|
if(!keys.has(key) && key != "redacts"_sv)
|
|
return true;
|
|
|
|
const json::value val
|
|
{
|
|
val_
|
|
};
|
|
|
|
if(!defined(val))
|
|
return true;
|
|
|
|
json::stack::member
|
|
{
|
|
object, key, val
|
|
};
|
|
|
|
return true;
|
|
});
|
|
|
|
json::stack::object unsigned_
|
|
{
|
|
object, "unsigned"
|
|
};
|
|
|
|
const json::value age
|
|
{
|
|
// When the opts give an explicit age, use it.
|
|
opts.age != std::numeric_limits<long>::min()?
|
|
opts.age:
|
|
|
|
// If we have depth information, craft a value based on the
|
|
// distance to the head depth; if this is 0 in riot the event will
|
|
// "stick" at the bottom of the timeline. This may be advantageous
|
|
// in the future but for now we make sure the result is non-zero.
|
|
json::get<"depth"_>(event) >= 0 && opts.room_depth && *opts.room_depth >= 0L?
|
|
(*opts.room_depth + 1 - json::get<"depth"_>(event)) + 1:
|
|
|
|
// We don't have depth information, so we use the origin_server_ts.
|
|
// It is bad if it conflicts with other appends in the room which
|
|
// did have depth information.
|
|
!opts.room_depth && json::get<"origin_server_ts"_>(event)?
|
|
ircd::time<milliseconds>() - json::get<"origin_server_ts"_>(event):
|
|
|
|
// Finally, this special value will eliminate the age altogether
|
|
// during serialization.
|
|
json::undefined_number
|
|
};
|
|
|
|
json::stack::member
|
|
{
|
|
unsigned_, "age", age
|
|
};
|
|
|
|
if(has_client_txnid)
|
|
json::stack::member
|
|
{
|
|
unsigned_, "transaction_id", *opts.client_txnid
|
|
};
|
|
|
|
if(txnid_idx)
|
|
m::get(std::nothrow, txnid_idx, "content", [&unsigned_]
|
|
(const json::object &content)
|
|
{
|
|
json::stack::member
|
|
{
|
|
unsigned_, "transaction_id", unquote(content.get("transaction_id"))
|
|
};
|
|
});
|
|
|
|
if(unlikely(event_append_info))
|
|
log::info
|
|
{
|
|
event_append_log, "%s %s idx:%lu in %s depth:%ld txnid:%s idx:%lu age:%ld %s,%s",
|
|
opts.user_id? string_view{*opts.user_id} : string_view{},
|
|
string_view{event.event_id},
|
|
opts.event_idx? *opts.event_idx : 0UL,
|
|
json::get<"room_id"_>(event),
|
|
json::get<"depth"_>(event),
|
|
has_client_txnid? *opts.client_txnid : string_view{},
|
|
txnid_idx,
|
|
int64_t(age),
|
|
json::get<"type"_>(event),
|
|
json::get<"state_key"_>(event),
|
|
};
|
|
|
|
return true;
|
|
}}
|
|
{
|
|
}
|