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construct/ircd/m_room.cc
2019-03-31 15:12:38 -07:00

3113 lines
58 KiB
C++

// Matrix Construct
//
// Copyright (C) Matrix Construct Developers, Authors & Contributors
// Copyright (C) 2016-2018 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.
int64_t
ircd::m::depth(const id::room &room_id)
{
return std::get<int64_t>(top(room_id));
}
int64_t
ircd::m::depth(std::nothrow_t,
const id::room &room_id)
{
const auto it
{
dbs::room_events.begin(room_id)
};
if(!it)
return -1;
const auto part
{
dbs::room_events_key(it->first)
};
return std::get<0>(part);
}
ircd::m::event::idx
ircd::m::head_idx(const id::room &room_id)
{
return std::get<event::idx>(top(room_id));
}
ircd::m::event::idx
ircd::m::head_idx(std::nothrow_t,
const id::room &room_id)
{
const auto it
{
dbs::room_events.begin(room_id)
};
if(!it)
return 0;
const auto part
{
dbs::room_events_key(it->first)
};
return std::get<1>(part);
}
ircd::m::event::id::buf
ircd::m::head(const id::room &room_id)
{
return std::get<event::id::buf>(top(room_id));
}
ircd::m::event::id::buf
ircd::m::head(std::nothrow_t,
const id::room &room_id)
{
return std::get<event::id::buf>(top(std::nothrow, room_id));
}
std::tuple<ircd::m::event::id::buf, int64_t, ircd::m::event::idx>
ircd::m::top(const id::room &room_id)
{
const auto ret
{
top(std::nothrow, room_id)
};
if(std::get<int64_t>(ret) == -1)
throw m::NOT_FOUND
{
"No head for room %s", string_view{room_id}
};
return ret;
}
std::tuple<ircd::m::event::id::buf, int64_t, ircd::m::event::idx>
ircd::m::top(std::nothrow_t,
const id::room &room_id)
{
const auto it
{
dbs::room_events.begin(room_id)
};
if(!it)
return
{
event::id::buf{}, -1, 0
};
const auto part
{
dbs::room_events_key(it->first)
};
const int64_t &depth
{
int64_t(std::get<0>(part))
};
const event::idx &event_idx
{
std::get<1>(part)
};
std::tuple<event::id::buf, int64_t, event::idx> ret
{
event::id::buf{}, depth, event_idx
};
event::fetch::event_id(event_idx, std::nothrow, [&ret]
(const event::id &event_id)
{
std::get<event::id::buf>(ret) = event_id;
});
return ret;
}
ircd::string_view
ircd::m::version(const mutable_buffer &buf,
const room &room)
{
const auto ret
{
version(buf, room, std::nothrow)
};
if(!ret)
throw m::NOT_FOUND
{
"Failed to find room %s to query its version",
string_view{room.room_id}
};
return ret;
}
ircd::string_view
ircd::m::version(const mutable_buffer &buf,
const room &room,
std::nothrow_t)
{
string_view ret;
const auto event_idx
{
room.get(std::nothrow, "m.room.create", "")
};
if(!event_idx)
return ret;
m::get(std::nothrow, event_idx, "content", [&ret]
(const json::object &content)
{
ret = unquote(content.get("version", "1"));
});
return ret;
}
bool
ircd::m::creator(const id::room &room_id,
const id::user &user_id)
{
const auto creator_user_id
{
creator(room_id)
};
return creator_user_id == user_id;
}
ircd::m::id::user::buf
ircd::m::creator(const id::room &room_id)
{
// Query the sender field of the event to get the creator. This is for
// future compatibility if the content.creator field gets eliminated.
static const event::fetch::opts fopts
{
event::keys::include
{
"sender",
}
};
const room::state state
{
room_id, &fopts
};
id::user::buf ret;
state.get("m.room.create", "", [&ret]
(const m::event &event)
{
ret = user::id
{
json::get<"sender"_>(event)
};
});
return ret;
}
bool
ircd::m::federate(const id::room &room_id)
{
static const m::event::fetch::opts fopts
{
event::keys::include
{
"content",
}
};
const m::room::state state
{
room_id, &fopts
};
bool ret;
state.get("m.room.create", "", [&ret]
(const m::event &event)
{
ret = json::get<"content"_>(event).get("m.federate", true);
});
return ret;
}
bool
ircd::m::exists(const id::room &room_id)
{
const auto it
{
dbs::room_events.begin(room_id)
};
return bool(it);
}
bool
ircd::m::exists(const room &room)
{
return exists(room.room_id);
}
bool
ircd::m::my(const room &room)
{
return my(room.room_id);
}
//
// room
//
/// A room index is just the event::idx of its create event.
ircd::m::event::idx
ircd::m::room::index(const room::id &room_id)
{
const auto ret
{
index(room_id, std::nothrow)
};
if(!ret)
throw m::NOT_FOUND
{
"No index for room %s", string_view{room_id}
};
return ret;
}
ircd::m::event::idx
ircd::m::room::index(const room::id &room_id,
std::nothrow_t)
{
uint64_t depth{0};
room::messages it
{
room_id, depth
};
return it? it.event_idx() : 0;
}
//
// room::room
//
/// Test of the join_rule of the room is the argument.
bool
ircd::m::room::join_rule(const string_view &rule)
const
{
char buf[32];
return join_rule(mutable_buffer{buf}) == rule;
}
/// Receive the join_rule of the room into buffer of sufficient size.
/// The protocol does not specify a join_rule string longer than 7
/// characters but do be considerate of the future. This function
/// properly defaults the string as per the protocol spec.
ircd::string_view
ircd::m::room::join_rule(const mutable_buffer &out)
const
{
static const string_view default_join_rule
{
"invite"
};
string_view ret
{
default_join_rule
};
const event::keys::include keys
{
"content"
};
const m::event::fetch::opts fopts
{
keys, this->fopts? this->fopts->gopts : db::gopts{}
};
const room::state state
{
*this, &fopts
};
state.get(std::nothrow, "m.room.join_rules", "", [&ret, &out]
(const m::event &event)
{
const auto &content
{
json::get<"content"_>(event)
};
const string_view &rule
{
content.get("join_rule", default_join_rule)
};
ret = string_view
{
data(out), copy(out, unquote(rule))
};
});
return ret;
}
/// The only joined members are from our origin (local only). This indicates
/// we won't have any other federation servers to query for room data, nor do
/// we need to broadcast events to the federation. This is not an authority
/// about a room's type or ability to federate. Returned value changes to false
/// when another origin joins.
bool
ircd::m::room::lonly()
const
{
const origins origins(*this);
return origins.only(my_host());
}
bool
ircd::m::room::visible(const string_view &mxid,
const event *const &event)
const
{
if(event)
return m::visible(*event, mxid);
const m::event event_
{
{ "event_id", event_id },
{ "room_id", room_id },
};
return m::visible(event_, mxid);
}
bool
ircd::m::room::membership(const m::id::user &user_id,
const string_view &membership)
const
{
char buf[64];
return this->membership(buf, user_id) == membership;
}
ircd::string_view
ircd::m::room::membership(const mutable_buffer &out,
const m::id::user &user_id)
const
{
string_view ret;
const room::state state{*this};
state.get(std::nothrow, "m.room.member", user_id, [&out, &ret]
(const event::idx &event_idx)
{
m::get(std::nothrow, event_idx, "content", [&out, &ret]
(const json::object &content)
{
ret =
{
data(out), copy(out, unquote(content.get("membership")))
};
});
});
return ret;
}
bool
ircd::m::room::has(const string_view &type)
const
{
return get(std::nothrow, type, event::closure{});
}
void
ircd::m::room::get(const string_view &type,
const event::closure &closure)
const
{
if(!get(std::nothrow, type, closure))
throw m::NOT_FOUND
{
"No events of type '%s' found in '%s'",
type,
room_id
};
}
bool
ircd::m::room::get(std::nothrow_t,
const string_view &type,
const event::closure &closure)
const
{
bool ret{false};
for_each(type, event::closure_bool{[&ret, &closure]
(const event &event)
{
if(closure)
closure(event);
ret = true;
return false;
}});
return ret;
}
ircd::m::event::idx
ircd::m::room::get(const string_view &type,
const string_view &state_key)
const
{
return state(*this).get(type, state_key);
}
ircd::m::event::idx
ircd::m::room::get(std::nothrow_t,
const string_view &type,
const string_view &state_key)
const
{
return state(*this).get(std::nothrow, type, state_key);
}
void
ircd::m::room::get(const string_view &type,
const string_view &state_key,
const event::closure &closure)
const
{
const state state{*this};
state.get(type, state_key, closure);
}
bool
ircd::m::room::get(std::nothrow_t,
const string_view &type,
const string_view &state_key,
const event::closure &closure)
const
{
const state state{*this};
return state.get(std::nothrow, type, state_key, closure);
}
bool
ircd::m::room::has(const string_view &type,
const string_view &state_key)
const
{
const state state{*this};
return state.has(type, state_key);
}
void
ircd::m::room::for_each(const event::closure &closure)
const
{
for_each(string_view{}, closure);
}
bool
ircd::m::room::for_each(const event::closure_bool &closure)
const
{
return for_each(string_view{}, closure);
}
void
ircd::m::room::for_each(const event::id::closure &closure)
const
{
for_each(string_view{}, closure);
}
bool
ircd::m::room::for_each(const event::id::closure_bool &closure)
const
{
return for_each(string_view{}, closure);
}
void
ircd::m::room::for_each(const event::closure_idx &closure)
const
{
for_each(string_view{}, closure);
}
bool
ircd::m::room::for_each(const event::closure_idx_bool &closure)
const
{
return for_each(string_view{}, closure);
}
void
ircd::m::room::for_each(const string_view &type,
const event::closure &closure)
const
{
for_each(type, event::closure_bool{[&closure]
(const event &event)
{
closure(event);
return true;
}});
}
bool
ircd::m::room::for_each(const string_view &type,
const event::closure_bool &closure)
const
{
event::fetch event
{
fopts? *fopts : event::fetch::default_opts
};
return for_each(type, event::closure_idx_bool{[&closure, &event]
(const event::idx &event_idx)
{
if(!seek(event, event_idx, std::nothrow))
return true;
return closure(event);
}});
}
void
ircd::m::room::for_each(const string_view &type,
const event::id::closure &closure)
const
{
for_each(type, event::id::closure_bool{[&closure]
(const event::id &event_id)
{
closure(event_id);
return true;
}});
}
bool
ircd::m::room::for_each(const string_view &type,
const event::id::closure_bool &closure)
const
{
return for_each(type, event::closure_idx_bool{[&closure]
(const event::idx &idx)
{
bool ret{true};
event::fetch::event_id(idx, std::nothrow, [&ret, &closure]
(const event::id &event_id)
{
ret = closure(event_id);
});
return ret;
}});
}
void
ircd::m::room::for_each(const string_view &type,
const event::closure_idx &closure)
const
{
for_each(type, event::closure_idx_bool{[&closure]
(const event::idx &idx)
{
closure(idx);
return true;
}});
}
bool
ircd::m::room::for_each(const string_view &type,
const event::closure_idx_bool &closure)
const
{
static constexpr auto idx
{
json::indexof<event, "type"_>()
};
auto &column
{
dbs::event_column.at(idx)
};
messages it{*this};
for(; it; --it)
{
const auto &event_idx
{
it.event_idx()
};
bool match
{
empty(type) // allow empty type to always match and bypass query
};
if(!match)
column(byte_view<string_view>(event_idx), std::nothrow, [&match, &type]
(const string_view &value)
{
match = value == type;
});
if(match)
if(!closure(event_idx))
return false;
}
return true;
}
//
// room::messages
//
ircd::m::room::messages::messages(const m::room &room,
const event::fetch::opts *const &fopts)
:room{room}
,_event
{
fopts?
*fopts:
room.fopts?
*room.fopts:
event::fetch::default_opts
}
{
if(room.event_id)
seek(room.event_id);
else
seek();
}
ircd::m::room::messages::messages(const m::room &room,
const event::id &event_id,
const event::fetch::opts *const &fopts)
:room{room}
,_event
{
fopts?
*fopts:
room.fopts?
*room.fopts:
event::fetch::default_opts
}
{
seek(event_id);
}
ircd::m::room::messages::messages(const m::room &room,
const uint64_t &depth,
const event::fetch::opts *const &fopts)
:room{room}
,_event
{
fopts?
*fopts:
room.fopts?
*room.fopts:
event::fetch::default_opts
}
{
// As a special convenience for the ctor only, if the depth=0 and
// nothing is found another attempt is made for depth=1 for synapse
// rooms which start at depth=1.
if(!seek(depth) && depth == 0)
seek(1);
}
const ircd::m::event &
ircd::m::room::messages::operator*()
{
return fetch(std::nothrow);
};
bool
ircd::m::room::messages::seek(const event::id &event_id)
{
const event::idx &event_idx
{
m::index(event_id, std::nothrow)
};
return event_idx?
seek_idx(event_idx):
false;
}
bool
ircd::m::room::messages::seek(const uint64_t &depth)
{
char buf[dbs::ROOM_EVENTS_KEY_MAX_SIZE];
const string_view seek_key
{
depth != uint64_t(-1)?
dbs::room_events_key(buf, room.room_id, depth):
room.room_id
};
this->it = dbs::room_events.begin(seek_key);
return bool(*this);
}
bool
ircd::m::room::messages::seek_idx(const event::idx &event_idx)
try
{
uint64_t depth(0);
if(event_idx)
m::get(event_idx, "depth", mutable_buffer
{
reinterpret_cast<char *>(&depth), sizeof(depth)
});
char buf[dbs::ROOM_EVENTS_KEY_MAX_SIZE];
const auto &seek_key
{
dbs::room_events_key(buf, room.room_id, depth, event_idx)
};
this->it = dbs::room_events.begin(seek_key);
if(!bool(*this))
return false;
// Check if this event_idx is actually in this room
if(event_idx && event_idx != this->event_idx())
return false;
return true;
}
catch(const db::not_found &e)
{
return false;
}
ircd::m::event::id::buf
ircd::m::room::messages::event_id()
const
{
event::id::buf ret;
event::fetch::event_id(this->event_idx(), [&ret]
(const event::id &event_id)
{
ret = event_id;
});
return ret;
}
ircd::string_view
ircd::m::room::messages::state_root()
const
{
assert(bool(*this));
return it->second;
}
uint64_t
ircd::m::room::messages::depth()
const
{
assert(bool(*this));
const auto part
{
dbs::room_events_key(it->first)
};
return std::get<0>(part);
}
ircd::m::event::idx
ircd::m::room::messages::event_idx()
const
{
assert(bool(*this));
const auto part
{
dbs::room_events_key(it->first)
};
return std::get<1>(part);
}
const ircd::m::event &
ircd::m::room::messages::fetch()
{
m::seek(_event, event_idx());
return _event;
}
const ircd::m::event &
ircd::m::room::messages::fetch(std::nothrow_t)
{
m::seek(_event, event_idx(), std::nothrow);
return _event;
}
//
// room::state
//
decltype(ircd::m::room::state::disable_history)
ircd::m::room::state::disable_history
{
{ "name", "ircd.m.room.state.disable_history" },
{ "default", true },
};
decltype(ircd::m::room::state::readahead_size)
ircd::m::room::state::readahead_size
{
{ "name", "ircd.m.room.state.readahead_size" },
{ "default", 0L },
};
//
// room::state::state
//
ircd::m::room::state::state(const m::room &room,
const event::fetch::opts *const &fopts)
:room_id
{
room.room_id
}
,event_id
{
room.event_id?
event::id::buf{room.event_id}:
event::id::buf{}
}
,root_id
{
event_id && !bool(disable_history)?
dbs::state_root(root_id_buf, room_id, event_id):
m::state::id{}
}
,fopts
{
fopts?
fopts:
room.fopts
}
{
}
size_t
ircd::m::room::state::prefetch(const event::idx &start,
const event::idx &stop)
const
{
return prefetch(string_view{}, start, stop);
}
size_t
ircd::m::room::state::prefetch(const string_view &type,
const event::idx &start,
const event::idx &stop)
const
{
return prefetch(*this, type, event::idx_range{start, stop});
}
ircd::m::event::idx
ircd::m::room::state::get(const string_view &type,
const string_view &state_key)
const
{
event::idx ret;
get(type, state_key, event::closure_idx{[&ret]
(const event::idx &event_idx)
{
ret = event_idx;
}});
return ret;
}
ircd::m::event::idx
ircd::m::room::state::get(std::nothrow_t,
const string_view &type,
const string_view &state_key)
const
{
event::idx ret{0};
get(std::nothrow, type, state_key, event::closure_idx{[&ret]
(const event::idx &event_idx)
{
ret = event_idx;
}});
return ret;
}
void
ircd::m::room::state::get(const string_view &type,
const string_view &state_key,
const event::closure &closure)
const
{
get(type, state_key, event::closure_idx{[this, &closure]
(const event::idx &event_idx)
{
const event::fetch event
{
event_idx, fopts? *fopts : event::fetch::default_opts
};
closure(event);
}});
}
void
ircd::m::room::state::get(const string_view &type,
const string_view &state_key,
const event::id::closure &closure)
const try
{
if(!present())
return m::state::get(root_id, type, state_key, [&closure]
(const string_view &event_id)
{
closure(unquote(event_id));
});
get(type, state_key, event::closure_idx{[&closure]
(const event::idx &idx)
{
event::fetch::event_id(idx, closure);
}});
}
catch(const db::not_found &e)
{
throw m::NOT_FOUND
{
"(%s,%s) in %s :%s",
type,
state_key,
string_view{room_id},
e.what()
};
}
void
ircd::m::room::state::get(const string_view &type,
const string_view &state_key,
const event::closure_idx &closure)
const try
{
if(!present())
m::state::get(root_id, type, state_key, [&closure]
(const string_view &event_id)
{
closure(index(m::event::id(unquote(event_id))));
});
auto &column{dbs::room_state};
char key[dbs::ROOM_STATE_KEY_MAX_SIZE];
column(dbs::room_state_key(key, room_id, type, state_key), [&closure]
(const string_view &value)
{
closure(byte_view<event::idx>(value));
});
}
catch(const db::not_found &e)
{
throw m::NOT_FOUND
{
"(%s,%s) in %s :%s",
type,
state_key,
string_view{room_id},
e.what()
};
}
bool
ircd::m::room::state::get(std::nothrow_t,
const string_view &type,
const string_view &state_key,
const event::closure &closure)
const
{
return get(std::nothrow, type, state_key, event::closure_idx{[this, &closure]
(const event::idx &event_idx)
{
const event::fetch event
{
event_idx, std::nothrow, fopts? *fopts : event::fetch::default_opts
};
closure(event);
}});
}
bool
ircd::m::room::state::get(std::nothrow_t,
const string_view &type,
const string_view &state_key,
const event::id::closure &closure)
const
{
if(!present())
return m::state::get(std::nothrow, root_id, type, state_key, [&closure]
(const string_view &event_id)
{
closure(unquote(event_id));
});
return get(std::nothrow, type, state_key, event::closure_idx{[&closure]
(const event::idx &idx)
{
event::fetch::event_id(idx, std::nothrow, closure);
}});
}
bool
ircd::m::room::state::get(std::nothrow_t,
const string_view &type,
const string_view &state_key,
const event::closure_idx &closure)
const
{
if(!present())
return m::state::get(std::nothrow, root_id, type, state_key, [&closure]
(const string_view &event_id)
{
return closure(index(m::event::id(unquote(event_id)), std::nothrow));
});
auto &column{dbs::room_state};
char key[dbs::ROOM_STATE_KEY_MAX_SIZE];
return column(dbs::room_state_key(key, room_id, type, state_key), std::nothrow, [&closure]
(const string_view &value)
{
closure(byte_view<event::idx>(value));
});
}
bool
ircd::m::room::state::has(const string_view &type)
const
{
return for_each(type, event::id::closure_bool{[](const m::event::id &)
{
return true;
}});
}
bool
ircd::m::room::state::has(const string_view &type,
const string_view &state_key)
const
{
if(!present())
return m::state::get(std::nothrow, root_id, type, state_key, []
(const string_view &event_id)
{});
auto &column{dbs::room_state};
char key[dbs::ROOM_STATE_KEY_MAX_SIZE];
return db::has(column, dbs::room_state_key(key, room_id, type, state_key));
}
size_t
ircd::m::room::state::count()
const
{
return count(string_view{});
}
size_t
ircd::m::room::state::count(const string_view &type)
const
{
if(!present())
return m::state::count(root_id, type);
size_t ret{0};
for_each(type, event::closure_idx{[&ret]
(const event::idx &event_idx)
{
++ret;
}});
return ret;
}
void
ircd::m::room::state::for_each(const event::closure &closure)
const
{
for_each(event::closure_bool{[&closure]
(const m::event &event)
{
closure(event);
return true;
}});
}
bool
ircd::m::room::state::for_each(const event::closure_bool &closure)
const
{
event::fetch event
{
fopts? *fopts : event::fetch::default_opts
};
return for_each(event::closure_idx_bool{[&event, &closure]
(const event::idx &event_idx)
{
if(seek(event, event_idx, std::nothrow))
if(!closure(event))
return false;
return true;
}});
}
void
ircd::m::room::state::for_each(const event::id::closure &closure)
const
{
for_each(event::id::closure_bool{[&closure]
(const event::id &event_id)
{
closure(event_id);
return true;
}});
}
bool
ircd::m::room::state::for_each(const event::id::closure_bool &closure)
const
{
if(!present())
return m::state::for_each(root_id, m::state::iter_bool_closure{[&closure]
(const json::array &key, const string_view &event_id)
{
return closure(unquote(event_id));
}});
return for_each(event::closure_idx_bool{[&closure]
(const event::idx &idx)
{
bool ret{true};
event::fetch::event_id(idx, std::nothrow, [&ret, &closure]
(const event::id &id)
{
ret = closure(id);
});
return ret;
}});
}
void
ircd::m::room::state::for_each(const event::closure_idx &closure)
const
{
for_each(event::closure_idx_bool{[&closure]
(const event::idx &event_idx)
{
closure(event_idx);
return true;
}});
}
bool
ircd::m::room::state::for_each(const event::closure_idx_bool &closure)
const
{
return for_each(closure_bool{[&closure]
(const string_view &type, const string_view &state_key, const event::idx &event_idx)
{
return closure(event_idx);
}});
}
bool
ircd::m::room::state::for_each(const closure_bool &closure)
const
{
if(!present())
return m::state::for_each(root_id, m::state::iter_bool_closure{[&closure]
(const json::array &key, const string_view &event_id)
{
const auto idx(index(m::event::id(unquote(event_id)), std::nothrow));
return closure(key.at(0), key.at(1), idx);
}});
db::gopts opts
{
this->fopts? this->fopts->gopts : db::gopts{}
};
if(!opts.readahead)
opts.readahead = size_t(readahead_size);
auto &column{dbs::room_state};
for(auto it{column.begin(room_id, opts)}; bool(it); ++it)
{
const byte_view<event::idx> idx(it->second);
const auto key(dbs::room_state_key(it->first));
if(!closure(std::get<0>(key), std::get<1>(key), idx))
return false;
}
return true;
}
void
ircd::m::room::state::for_each(const string_view &type,
const event::closure &closure)
const
{
for_each(type, event::closure_bool{[&closure]
(const m::event &event)
{
closure(event);
return true;
}});
}
bool
ircd::m::room::state::for_each(const string_view &type,
const event::closure_bool &closure)
const
{
return type?
for_each(type, string_view{}, closure):
for_each(closure);
}
void
ircd::m::room::state::for_each(const string_view &type,
const event::id::closure &closure)
const
{
for_each(type, event::id::closure_bool{[&closure]
(const event::id &event_id)
{
closure(event_id);
return true;
}});
}
bool
ircd::m::room::state::for_each(const string_view &type,
const event::id::closure_bool &closure)
const
{
return type?
for_each(type, string_view{}, closure):
for_each(closure);
}
void
ircd::m::room::state::for_each(const string_view &type,
const event::closure_idx &closure)
const
{
for_each(type, event::closure_idx_bool{[&closure]
(const event::idx &event_idx)
{
closure(event_idx);
return true;
}});
}
bool
ircd::m::room::state::for_each(const string_view &type,
const event::closure_idx_bool &closure)
const
{
return type?
for_each(type, string_view{}, closure):
for_each(closure);
}
bool
ircd::m::room::state::for_each(const string_view &type,
const closure_bool &closure)
const
{
return type?
for_each(type, string_view{}, closure):
for_each(closure);
}
bool
ircd::m::room::state::for_each(const string_view &type,
const string_view &state_key_lb,
const event::closure_bool &closure)
const
{
event::fetch event
{
fopts? *fopts : event::fetch::default_opts
};
return for_each(type, state_key_lb, event::closure_idx_bool{[&event, &closure]
(const event::idx &event_idx)
{
if(seek(event, event_idx, std::nothrow))
if(!closure(event))
return false;
return true;
}});
}
bool
ircd::m::room::state::for_each(const string_view &type,
const string_view &state_key_lb,
const event::id::closure_bool &closure)
const
{
if(!present())
return m::state::for_each(root_id, type, state_key_lb, [&closure]
(const json::array &key, const string_view &event_id)
{
return closure(unquote(event_id));
});
return for_each(type, state_key_lb, event::closure_idx_bool{[&closure]
(const event::idx &idx)
{
bool ret{true};
event::fetch::event_id(idx, std::nothrow, [&ret, &closure]
(const event::id &id)
{
ret = closure(id);
});
return ret;
}});
}
bool
ircd::m::room::state::for_each(const string_view &type,
const string_view &state_key_lb,
const event::closure_idx_bool &closure)
const
{
return for_each(type, state_key_lb, closure_bool{[&closure]
(const string_view &type, const string_view &state_key, const event::idx &event_idx)
{
return closure(event_idx);
}});
}
bool
ircd::m::room::state::for_each(const string_view &type,
const string_view &state_key_lb,
const closure_bool &closure)
const
{
if(!present())
return m::state::for_each(root_id, type, state_key_lb, [&closure]
(const json::array &key, const string_view &event_id)
{
const auto idx(index(m::event::id(unquote(event_id)), std::nothrow));
return closure(key.at(0), key.at(1), idx);
});
char keybuf[dbs::ROOM_STATE_KEY_MAX_SIZE];
const auto &key
{
dbs::room_state_key(keybuf, room_id, type, state_key_lb)
};
db::gopts opts
{
this->fopts? this->fopts->gopts : db::gopts{}
};
if(!opts.readahead)
opts.readahead = size_t(readahead_size);
auto &column{dbs::room_state};
for(auto it{column.begin(key, opts)}; bool(it); ++it)
{
const auto key
{
dbs::room_state_key(it->first)
};
if(std::get<0>(key) != type)
break;
const byte_view<event::idx> idx(it->second);
if(!closure(std::get<0>(key), std::get<1>(key), idx))
return false;
}
return true;
}
void
ircd::m::room::state::for_each(const string_view &type,
const keys &closure)
const
{
for_each(type, keys_bool{[&closure]
(const string_view &key)
{
closure(key);
return true;
}});
}
bool
ircd::m::room::state::for_each(const string_view &type,
const keys_bool &closure)
const
{
return for_each(type, string_view{}, closure);
}
bool
ircd::m::room::state::for_each(const string_view &type,
const string_view &state_key_lb,
const keys_bool &closure)
const
{
if(!present())
return m::state::for_each(root_id, type, state_key_lb, [&closure]
(const json::array &key, const string_view &event_id)
{
assert(size(key) >= 2);
return closure(unquote(key.at(1)));
});
char keybuf[dbs::ROOM_STATE_KEY_MAX_SIZE];
const auto &key
{
dbs::room_state_key(keybuf, room_id, type, state_key_lb)
};
db::gopts opts
{
this->fopts? this->fopts->gopts : db::gopts{}
};
if(!opts.readahead)
opts.readahead = size_t(readahead_size);
auto &column{dbs::room_state};
for(auto it{column.begin(key, opts)}; bool(it); ++it)
{
const auto key
{
dbs::room_state_key(it->first)
};
if(std::get<0>(key) != type)
break;
if(!closure(std::get<1>(key)))
return false;
}
return true;
}
bool
ircd::m::room::state::for_each(const type_prefix &prefix,
const types_bool &closure)
const
{
bool ret(true), cont(true);
for_each(types_bool([&prefix, &closure, &ret, &cont]
(const string_view &type)
{
if(!startswith(type, string_view(prefix)))
return cont;
cont = false;
ret = closure(type);
return ret;
}));
return ret;
}
void
ircd::m::room::state::for_each(const types &closure)
const
{
for_each(types_bool{[&closure]
(const string_view &type)
{
closure(type);
return true;
}});
}
bool
ircd::m::room::state::for_each(const types_bool &closure)
const
{
string_view last;
char lastbuf[m::event::TYPE_MAX_SIZE];
if(!present())
{
m::state::for_each(root_id, m::state::iter_bool_closure{[&closure, &last, &lastbuf]
(const json::array &key, const string_view &)
{
assert(size(key) >= 2);
const auto type
{
unquote(key.at(0))
};
if(type == last)
return true;
last = strlcpy(lastbuf, type);
return closure(type);
}});
return true;
}
char keybuf[dbs::ROOM_STATE_KEY_MAX_SIZE];
const auto &key
{
dbs::room_state_key(keybuf, room_id, string_view{})
};
db::gopts opts
{
this->fopts? this->fopts->gopts : db::gopts{}
};
auto &column{dbs::room_state};
for(auto it{column.begin(key, opts)}; bool(it); ++it)
{
const auto part
{
dbs::room_state_key(it->first)
};
const auto &type
{
std::get<0>(part)
};
if(type == last)
continue;
last = strlcpy(lastbuf, type);
if(!closure(type))
return false;
}
return true;
}
/// Figure out if this instance of room::state is presenting the current
/// "present" state of the room or the state of the room at some previous
/// event. This is an important distinction because the present state of
/// the room should provide optimal performance for the functions of this
/// interface by using the present state table. Prior states will use the
/// state btree.
bool
ircd::m::room::state::present()
const
{
// When no event_id is passed to the state constructor that immediately
// indicates the present state of the room is sought.
if(!event_id)
return true;
// When an event_id is passed but no state btree root_id was found
// that means there is no state btree generated for this room or at
// this event_id. Right now we fall back to using the present state
// of the room, which may be confusing behavior. In production this
// shouldn't happen; if it does, the ctor should probably throw rather
// than this. We just fallback to considering present state here.
if(!root_id)
return true;
// Check the cached value from a previous false result of this function
// before doing any real work/IO below. If this function ever returned
// false it will never return true after.
if(_not_present)
return false;
const auto head_id
{
m::head(std::nothrow, room_id)
};
// If the event_id passed is exactly the latest event we can obviously
// consider this the present state.
if(!head_id || head_id == event_id)
return true;
m::state::id_buffer root_id_buf;
const auto head_root
{
dbs::state_root(root_id_buf, room_id, head_id)
};
// If the room's state has not changed between the event_id desired
// here and the latest event we can also consider this the present state.
if(head_root && head_root == root_id)
return true;
// This result is cacheable because once it's no longer the present
// it will never be again. Panta chorei kai ouden menei. Note that this
// is a const member function; the cache variable is an appropriate case
// for the 'mutable' keyword.
_not_present = true;
return false;
}
//
// room::members
//
size_t
ircd::m::room::members::count()
const
{
const room::state state
{
room
};
return state.count("m.room.member");
}
size_t
ircd::m::room::members::count(const string_view &membership)
const
{
// Allow empty membership string to count all memberships
if(!membership)
return count();
// joined members optimization. Only possible when seeking
// membership="join" on the present state of the room.
if(!room.event_id && membership == "join")
{
size_t ret{0};
const room::origins origins{room};
origins._for_each_([&ret](const string_view &)
{
++ret;
return true;
});
return ret;
}
// The list of event fields to fetch for the closure
static const event::keys::include keys
{
"event_id", // Added for any upstack usage (but may be unnecessary).
"content", // Required because synapse events randomly have no event.membership
};
const m::event::fetch::opts fopts
{
keys, room.fopts? room.fopts->gopts : db::gopts{}
};
const room::state state
{
room, &fopts
};
size_t ret{0};
state.for_each("m.room.member", event::closure{[&ret, &membership]
(const m::event &event)
{
ret += m::membership(event) == membership;
}});
return ret;
}
void
ircd::m::room::members::for_each(const closure &closure)
const
{
for_each(string_view{}, closure);
}
bool
ircd::m::room::members::for_each(const closure_bool &closure)
const
{
return for_each(string_view{}, closure);
}
void
ircd::m::room::members::for_each(const event::closure &closure)
const
{
for_each(string_view{}, closure);
}
bool
ircd::m::room::members::for_each(const event::closure_bool &closure)
const
{
const room::state state{room};
return state.for_each("m.room.member", event::closure_bool{[&closure]
(const m::event &event)
{
return closure(event);
}});
}
void
ircd::m::room::members::for_each(const string_view &membership,
const closure &closure)
const
{
for_each(membership, closure_bool{[&closure]
(const user::id &user_id)
{
closure(user_id);
return true;
}});
}
/// Iterate the mxid's of the users in the room, optionally with a specific
/// membership state. This query contains internal optimizations as the closure
/// only requires a user::id. The db::gopts set in the room.fopts pointer is
/// still used if provided.
bool
ircd::m::room::members::for_each(const string_view &membership,
const closure_bool &closure)
const
{
// Setup the list of event fields to fetch for the closure
static const event::keys::include keys
{
"event_id",
"state_key",
"content",
};
// In this case the fetch opts isn't static so it can maintain the
// previously given db::gopts, but it will use our keys list.
const m::event::fetch::opts fopts
{
keys, room.fopts? room.fopts->gopts : db::gopts{}
};
// Stack-over the the current fetch opts with our new opts for this query,
// putting them back when we're finished. This requires a const_cast which
// should be okay here.
auto &room(const_cast<m::room &>(this->room));
const auto theirs{room.fopts};
room.fopts = &fopts;
const unwind reset{[&room, &theirs]
{
room.fopts = theirs;
}};
return for_each(membership, event::closure_bool{[&closure]
(const event &event)
{
const user::id &user_id
{
at<"state_key"_>(event)
};
return closure(user_id);
}});
}
void
ircd::m::room::members::for_each(const string_view &membership,
const event::closure &closure)
const
{
for_each(membership, event::closure_bool{[&closure]
(const m::event &event)
{
closure(event);
return true;
}});
}
bool
ircd::m::room::members::for_each(const string_view &membership,
const event::closure_bool &closure)
const
{
if(empty(membership))
return for_each(closure);
// joined members optimization. Only possible when seeking
// membership="join" on the present state of the room.
if(!room.event_id && membership == "join")
{
const room::origins origins{room};
return origins._for_each_([&closure, this]
(const string_view &key)
{
const string_view &member
{
std::get<1>(dbs::room_joined_key(key))
};
bool ret{true};
room.get(std::nothrow, "m.room.member", member, event::closure{[&closure, &ret]
(const event &event)
{
ret = closure(event);
}});
return ret;
});
}
return for_each(event::closure_bool{[&membership, &closure]
(const event &event)
{
if(m::membership(event) == membership)
if(!closure(event))
return false;
return true;
}});
}
//
// room::origins
//
ircd::string_view
ircd::m::room::origins::random(const mutable_buffer &buf,
const closure_bool &proffer)
const
{
string_view ret;
const auto closure{[&buf, &proffer, &ret]
(const string_view &origin)
{
ret = { data(buf), copy(buf, origin) };
}};
random(closure, proffer);
return ret;
}
bool
ircd::m::room::origins::random(const closure &view,
const closure_bool &proffer)
const
{
return random(*this, view, proffer);
}
bool
ircd::m::room::origins::random(const origins &o,
const closure &view,
const closure_bool &proffer)
{
using prototype = bool (const origins &, const closure &, const closure_bool &);
static mods::import<prototype> call
{
"m_room", "ircd::m::room::origins::random"
};
return call(o, view, proffer);
}
size_t
ircd::m::room::origins::count()
const
{
size_t ret{0};
for_each([&ret](const string_view &)
{
++ret;
});
return ret;
}
/// Tests if argument is the only origin in the room.
/// If a zero or more than one origins exist, returns false. If the only origin
/// in the room is the argument origin, returns true.
bool
ircd::m::room::origins::only(const string_view &origin)
const
{
ushort ret{2};
for_each(closure_bool{[&ret, &origin]
(const string_view &origin_) -> bool
{
if(origin == origin_)
ret = 1;
else
ret = 0;
return ret;
}});
return ret == 1;
}
bool
ircd::m::room::origins::has(const string_view &origin)
const
{
db::index &index
{
dbs::room_joined
};
char querybuf[dbs::ROOM_JOINED_KEY_MAX_SIZE];
const auto query
{
dbs::room_joined_key(querybuf, room.room_id, origin)
};
auto it
{
index.begin(query)
};
if(!it)
return false;
const string_view &key
{
lstrip(it->first, "\0"_sv)
};
const string_view &key_origin
{
std::get<0>(dbs::room_joined_key(key))
};
return key_origin == origin;
}
void
ircd::m::room::origins::for_each(const closure &view)
const
{
for_each(closure_bool{[&view]
(const string_view &origin)
{
view(origin);
return true;
}});
}
bool
ircd::m::room::origins::for_each(const closure_bool &view)
const
{
string_view last;
char lastbuf[rfc1035::NAME_BUF_SIZE];
return _for_each_([&last, &lastbuf, &view]
(const string_view &key)
{
const string_view &origin
{
std::get<0>(dbs::room_joined_key(key))
};
if(origin == last)
return true;
if(!view(origin))
return false;
last = { lastbuf, copy(lastbuf, origin) };
return true;
});
}
bool
ircd::m::room::origins::_for_each_(const closure_bool &view)
const
{
db::index &index
{
dbs::room_joined
};
auto it
{
index.begin(room.room_id)
};
for(; bool(it); ++it)
{
const string_view &key
{
lstrip(it->first, "\0"_sv)
};
if(!view(key))
return false;
}
return true;
}
//
// room::head
//
std::pair<ircd::json::array, int64_t>
ircd::m::room::head::make_refs(const mutable_buffer &buf,
const size_t &limit,
const bool &need_top)
const
{
json::stack out{buf};
json::stack::array array{out};
const auto depth
{
make_refs(array, limit, need_top)
};
array.~array();
return
{
json::array{out.completed()},
depth
};
}
int64_t
ircd::m::room::head::make_refs(json::stack::array &out,
const size_t &limit,
const bool &need_top)
const
{
return make_refs(*this, out, limit, need_top);
}
size_t
ircd::m::room::head::count()
const
{
size_t ret(0);
for_each([&ret]
(const event::idx &event_idx, const event::id &event_id)
{
++ret;
});
return ret;
}
bool
ircd::m::room::head::has(const event::id &event_id)
const
{
bool ret{false};
for_each(closure_bool{[&ret, &event_id]
(const event::idx &event_idx, const event::id &event_id_)
{
ret = event_id_ == event_id;
return !ret; // for_each protocol: false to break
}});
return ret;
}
void
ircd::m::room::head::for_each(const closure &closure)
const
{
for_each(closure_bool{[&closure]
(const event::idx &event_idx, const event::id &event_id)
{
closure(event_idx, event_id);
return true;
}});
}
bool
ircd::m::room::head::for_each(const closure_bool &closure)
const
{
return for_each(*this, closure);
}
bool
ircd::m::room::head::for_each(const head &h,
const closure_bool &c)
{
using prototype = bool (const head &, const closure_bool &);
static mods::import<prototype> call
{
"m_room", "ircd::m::room::head::for_each"
};
return call(h, c);
}
int64_t
ircd::m::room::head::make_refs(const head &h,
json::stack::array &a,
const size_t &limit,
const bool &need_top)
{
using prototype = int64_t (const head &, json::stack::array &, const size_t &, const bool &);
static mods::import<prototype> call
{
"m_room", "ircd::m::room::head::make_refs"
};
return call(h, a, limit, need_top);
}
void
ircd::m::room::head::modify(const event::id &event_id,
const db::op &op,
const bool &refs)
{
using prototype = void (const event::id &, const db::op &, const bool &);
static mods::import<prototype> call
{
"m_room", "ircd::m::room::head::modify"
};
return call(event_id, op, refs);
}
size_t
ircd::m::room::head::rebuild(const head &h)
{
using prototype = size_t (const head &);
static mods::import<prototype> call
{
"m_room", "ircd::m::room::head::rebuild"
};
return call(h);
}
size_t
ircd::m::room::head::reset(const head &h)
{
using prototype = size_t (const head &);
static mods::import<prototype> call
{
"m_room", "ircd::m::room::head::reset"
};
return call(h);
}
//
// room::auth
//
void
ircd::m::room::auth::chain_eval(const auth &a,
const net::hostport &h)
{
using prototype = bool (const auth &, const net::hostport &);
static mods::import<prototype> call
{
"s_fetch", "ircd::m::room::auth::chain_eval"
};
call(a, h);
}
bool
ircd::m::room::auth::chain_fetch(const auth &a,
const net::hostport &h,
const fetch_closure &c)
{
using prototype = bool (const auth &, const net::hostport &, const fetch_closure &);
static mods::import<prototype> call
{
"s_fetch", "ircd::m::room::auth::chain_fetch"
};
return call(a, h, c);
}
ircd::json::array
ircd::m::room::auth::make_refs(const mutable_buffer &buf,
const types &types,
const m::id::user &user)
const
{
json::stack out{buf};
json::stack::array array{out};
make_refs(array, types, user);
array.~array();
return json::array{out.completed()};
}
void
ircd::m::room::auth::make_refs(json::stack::array &out,
const types &types,
const m::id::user &user)
const
{
make_refs(*this, out, types, user);
}
void
ircd::m::room::auth::for_each(const closure &c)
const
{
for_each(closure_bool{[this, &c]
(const auto &event_idx)
{
c(event_idx);
return true;
}});
}
bool
ircd::m::room::auth::for_each(const closure_bool &c)
const
{
return for_each(*this, c);
}
bool
ircd::m::room::auth::for_each(const auth &a,
const closure_bool &c)
{
using prototype = bool (const auth &, const closure_bool &);
static mods::import<prototype> call
{
"m_room", "ircd::m::room::auth::for_each"
};
return call(a, c);
}
void
ircd::m::room::auth::make_refs(const auth &a,
json::stack::array &out,
const types &t,
const m::id::user &u)
{
using prototype = void (const auth &, json::stack::array &, const types &, const m::id::user &);
static mods::import<prototype> call
{
"m_room", "ircd::m::room::auth::make_refs"
};
return call(a, out, t, u);
}
//
// room::aliases
//
size_t
ircd::m::room::aliases::count()
const
{
return count(string_view{});
}
size_t
ircd::m::room::aliases::count(const string_view &server)
const
{
size_t ret(0);
for_each(server, [&ret](const auto &a)
{
++ret;
return true;
});
return ret;
}
bool
ircd::m::room::aliases::has(const alias &alias)
const
{
return !for_each(alias.host(), [&alias]
(const id::room_alias &a)
{
assert(a.host() == alias.host());
return a == alias? false : true; // false to break on found
});
}
bool
ircd::m::room::aliases::for_each(const closure_bool &closure)
const
{
const room::state state
{
room
};
return state.for_each("m.room.aliases", room::state::keys_bool{[this, &closure]
(const string_view &state_key)
{
return for_each(state_key, closure);
}});
}
bool
ircd::m::room::aliases::for_each(const string_view &server,
const closure_bool &closure)
const
{
if(!server)
return for_each(closure);
return for_each(room, server, closure);
}
bool
ircd::m::room::aliases::for_each(const m::room &room,
const string_view &server,
const closure_bool &closure)
{
using prototype = bool (const m::room &, const string_view &, const closure_bool &);
static mods::import<prototype> call
{
"m_room_aliases", "ircd::m::room::aliases::for_each"
};
return call(room, server, closure);
}
//
// room::aliases::cache
//
bool
ircd::m::room::aliases::cache::del(const alias &a)
{
using prototype = bool (const alias &);
static mods::import<prototype> call
{
"m_room_aliases", "ircd::m::room::aliases::cache::del"
};
return call(a);
}
bool
ircd::m::room::aliases::cache::set(const alias &a,
const id &i)
{
using prototype = bool (const alias &, const id &);
static mods::import<prototype> call
{
"m_room_aliases", "ircd::m::room::aliases::cache::set"
};
return call(a, i);
}
bool
ircd::m::room::aliases::cache::fetch(std::nothrow_t,
const alias &a,
const net::hostport &hp)
try
{
fetch(a, hp);
return true;
}
catch(const std::exception &e)
{
thread_local char buf[384];
log::error
{
log, "Failed to fetch room_id for %s from %s :%s",
string_view{a},
string(buf, hp),
e.what(),
};
return false;
}
void
ircd::m::room::aliases::cache::fetch(const alias &a,
const net::hostport &hp)
{
using prototype = void (const alias &, const net::hostport &);
static mods::import<prototype> call
{
"m_room_aliases", "ircd::m::room::aliases::cache::fetch"
};
return call(a, hp);
}
ircd::m::room::id::buf
ircd::m::room::aliases::cache::get(const alias &a)
{
id::buf ret;
get(a, [&ret]
(const id &room_id)
{
ret = room_id;
});
return ret;
}
ircd::m::room::id::buf
ircd::m::room::aliases::cache::get(std::nothrow_t,
const alias &a)
{
id::buf ret;
get(std::nothrow, a, [&ret]
(const id &room_id)
{
ret = room_id;
});
return ret;
}
void
ircd::m::room::aliases::cache::get(const alias &a,
const id::closure &c)
{
if(!get(std::nothrow, a, c))
throw m::NOT_FOUND
{
"Cannot find room_id for %s",
string_view{a}
};
}
bool
ircd::m::room::aliases::cache::get(std::nothrow_t,
const alias &a,
const id::closure &c)
{
using prototype = bool (std::nothrow_t, const alias &, const id::closure &);
static mods::import<prototype> call
{
"m_room_aliases", "ircd::m::room::aliases::cache::get"
};
return call(std::nothrow, a, c);
}
bool
ircd::m::room::aliases::cache::has(const alias &a)
{
using prototype = bool (const alias &);
static mods::import<prototype> call
{
"m_room_aliases", "ircd::m::room::aliases::cache::has"
};
return call(a);
}
bool
ircd::m::room::aliases::cache::for_each(const closure_bool &c)
{
return for_each(string_view{}, c);
}
bool
ircd::m::room::aliases::cache::for_each(const string_view &s,
const closure_bool &c)
{
using prototype = bool (const string_view &, const closure_bool &);
static mods::import<prototype> call
{
"m_room_aliases", "ircd::m::room::aliases::cache::for_each"
};
return call(s, c);
}
//
// room::power
//
decltype(ircd::m::room::power::default_creator_level)
ircd::m::room::power::default_creator_level
{
100
};
decltype(ircd::m::room::power::default_power_level)
ircd::m::room::power::default_power_level
{
50
};
decltype(ircd::m::room::power::default_event_level)
ircd::m::room::power::default_event_level
{
0
};
decltype(ircd::m::room::power::default_user_level)
ircd::m::room::power::default_user_level
{
0
};
ircd::json::object
ircd::m::room::power::default_content(const mutable_buffer &out,
const m::user::id &creator)
{
using prototype = json::object (const mutable_buffer &, const m::user::id &);
static mods::import<prototype> call
{
"m_room", "ircd::m::room::power::default_content"
};
return call(out, creator);
}
//
// room::power::power
//
ircd::m::room::power::power(const m::room &room)
:power
{
room, room.get(std::nothrow, "m.room.power_levels", "")
}
{
}
ircd::m::room::power::power(const m::room &room,
const event::idx &power_event_idx)
:room
{
room
}
,power_event_idx
{
power_event_idx
}
{
}
ircd::m::room::power::power(const m::event &power_event,
const m::event &create_event)
:power
{
power_event, m::user::id(unquote(json::get<"content"_>(create_event).get("creator")))
}
{
}
ircd::m::room::power::power(const m::event &power_event,
const m::user::id &room_creator_id)
:power
{
json::get<"content"_>(power_event), room_creator_id
}
{
}
ircd::m::room::power::power(const json::object &power_event_content,
const m::user::id &room_creator_id)
:power_event_content
{
power_event_content
}
,room_creator_id
{
room_creator_id
}
{
}
bool
ircd::m::room::power::operator()(const m::user::id &user_id,
const string_view &prop,
const string_view &type,
const string_view &state_key)
const
{
const auto &user_level
{
level_user(user_id)
};
const auto &required_level
{
empty(prop) || prop == "events"?
level_event(type, state_key):
level(prop)
};
return user_level >= required_level;
}
int64_t
ircd::m::room::power::level_user(const m::user::id &user_id)
const try
{
int64_t ret
{
default_user_level
};
const auto closure{[&user_id, &ret]
(const json::object &content)
{
const auto users_default
{
content.get<int64_t>("users_default", default_user_level)
};
const json::object &users
{
content.get("users")
};
ret = users.get<int64_t>(user_id, users_default);
}};
const bool has_power_levels_event
{
view(closure)
};
if(!has_power_levels_event)
{
if(room_creator_id && user_id == room_creator_id)
ret = default_creator_level;
if(room.room_id && creator(room, user_id))
ret = default_creator_level;
}
return ret;
}
catch(const json::error &e)
{
return default_user_level;
}
int64_t
ircd::m::room::power::level_event(const string_view &type)
const try
{
int64_t ret
{
default_event_level
};
const auto closure{[&type, &ret]
(const json::object &content)
{
const auto &events_default
{
content.get<int64_t>("events_default", default_event_level)
};
const json::object &events
{
content.get("events")
};
ret = events.get<int64_t>(type, events_default);
}};
const bool has_power_levels_event
{
view(closure)
};
return ret;
}
catch(const json::error &e)
{
return default_event_level;
}
int64_t
ircd::m::room::power::level_event(const string_view &type,
const string_view &state_key)
const try
{
if(!defined(state_key))
return level_event(type);
int64_t ret
{
default_power_level
};
const auto closure{[&type, &ret]
(const json::object &content)
{
const auto &state_default
{
content.get<int64_t>("state_default", default_power_level)
};
const json::object &events
{
content.get("events")
};
ret = events.get<int64_t>(type, state_default);
}};
const bool has_power_levels_event
{
view(closure)
};
return ret;
}
catch(const json::error &e)
{
return default_power_level;
}
int64_t
ircd::m::room::power::level(const string_view &prop)
const try
{
int64_t ret
{
default_power_level
};
view([&prop, &ret]
(const json::object &content)
{
ret = content.at<int64_t>(prop);
});
return ret;
}
catch(const json::error &e)
{
return default_power_level;
}
size_t
ircd::m::room::power::count_levels()
const
{
size_t ret{0};
for_each([&ret]
(const string_view &, const int64_t &)
{
++ret;
});
return ret;
}
size_t
ircd::m::room::power::count_collections()
const
{
size_t ret{0};
view([&ret]
(const json::object &content)
{
for(const auto &member : content)
ret += json::type(member.second) == json::OBJECT;
});
return ret;
}
size_t
ircd::m::room::power::count(const string_view &prop)
const
{
size_t ret{0};
for_each(prop, [&ret]
(const string_view &, const int64_t &)
{
++ret;
});
return ret;
}
bool
ircd::m::room::power::has_event(const string_view &type)
const try
{
bool ret{false};
view([&type, &ret]
(const json::object &content)
{
const json::object &events
{
content.at("events")
};
const string_view &level
{
unquote(events.at(type))
};
ret = json::type(level) == json::NUMBER;
});
return ret;
}
catch(const json::error &)
{
return false;
}
bool
ircd::m::room::power::has_user(const m::user::id &user_id)
const try
{
bool ret{false};
view([&user_id, &ret]
(const json::object &content)
{
const json::object &users
{
content.at("users")
};
const string_view &level
{
unquote(users.at(user_id))
};
ret = json::type(level) == json::NUMBER;
});
return ret;
}
catch(const json::error &)
{
return false;
}
bool
ircd::m::room::power::has_collection(const string_view &prop)
const
{
bool ret{false};
view([&prop, &ret]
(const json::object &content)
{
const auto &value{content.get(prop)};
if(value && json::type(value) == json::OBJECT)
ret = true;
});
return ret;
}
bool
ircd::m::room::power::has_level(const string_view &prop)
const
{
bool ret{false};
view([&prop, &ret]
(const json::object &content)
{
const auto &value(unquote(content.get(prop)));
if(value && json::type(value) == json::NUMBER)
ret = true;
});
return ret;
}
void
ircd::m::room::power::for_each(const closure &closure)
const
{
for_each(string_view{}, closure);
}
bool
ircd::m::room::power::for_each(const closure_bool &closure)
const
{
return for_each(string_view{}, closure);
}
void
ircd::m::room::power::for_each(const string_view &prop,
const closure &closure)
const
{
for_each(prop, closure_bool{[&closure]
(const string_view &key, const int64_t &level)
{
closure(key, level);
return true;
}});
}
bool
ircd::m::room::power::for_each(const string_view &prop,
const closure_bool &closure)
const
{
bool ret{true};
view([&prop, &closure, &ret]
(const json::object &content)
{
const json::object &collection
{
// This little cmov gimmick sets collection to be the outer object
// itself if no property was given, allowing us to reuse this func
// for all iterations of key -> level mappings.
prop? json::object{content.get(prop)} : content
};
if(prop && json::type(string_view{collection}) != json::OBJECT)
return;
for(auto it(begin(collection)); it != end(collection) && ret; ++it)
{
const auto &member(*it);
if(json::type(unquote(member.second)) != json::NUMBER)
continue;
const auto &key
{
unquote(member.first)
};
const auto &val
{
lex_cast<int64_t>(member.second)
};
ret = closure(key, val);
}
});
return ret;
}
bool
ircd::m::room::power::view(const std::function<void (const json::object &)> &closure)
const
{
if(power_event_idx)
if(m::get(std::nothrow, power_event_idx, "content", closure))
return true;
closure(power_event_content);
return !empty(power_event_content);
}
//
// room::stats
//
size_t
ircd::m::room::stats::bytes_json_compressed(const m::room &room)
{
using prototype = size_t (const m::room &);
static mods::import<prototype> call
{
"m_room", "ircd::m::room::stats::bytes_json_compressed"
};
return call(room);
}
size_t
ircd::m::room::stats::bytes_json(const m::room &room)
{
using prototype = size_t (const m::room &);
static mods::import<prototype> call
{
"m_room", "ircd::m::room::stats::bytes_json"
};
return call(room);
}
size_t
ircd::m::room::stats::bytes_total_compressed(const m::room &room)
{
using prototype = size_t (const m::room &);
static mods::import<prototype> call
{
"m_room", "ircd::m::room::stats::bytes_total_compressed"
};
return call(room);
}
size_t
ircd::m::room::stats::bytes_total(const m::room &room)
{
using prototype = size_t (const m::room &);
static mods::import<prototype> call
{
"m_room", "ircd::m::room::stats::bytes_total"
};
return call(room);
}