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construct/matrix/push.cc

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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.
decltype(ircd::m::push::log)
ircd::m::push::log
{
"m.push"
};
decltype(ircd::m::push::pusher::type_prefix)
ircd::m::push::pusher::type_prefix
{
"ircd.push.pusher"
};
decltype(ircd::m::push::rule::type_prefix)
ircd::m::push::rule::type_prefix
{
"ircd.push.rule"
};
//
// request
//
template<>
decltype(ircd::util::instance_list<ircd::m::push::request>::allocator)
ircd::util::instance_list<ircd::m::push::request>::allocator
{};
template<>
decltype(ircd::util::instance_list<ircd::m::push::request>::list)
ircd::util::instance_list<ircd::m::push::request>::list
{
allocator
};
decltype(ircd::m::push::request::enable)
ircd::m::push::request::enable
{
{ "name", "ircd.m.push.request.enable" },
{ "default", true },
};
decltype(ircd::m::push::request::timeout)
ircd::m::push::request::timeout
{
{ "name", "ircd.m.push.request.timeout" },
{ "default", 8L },
};
decltype(ircd::m::push::request::mutex)
ircd::m::push::request::mutex;
decltype(ircd::m::push::request::dock)
ircd::m::push::request::dock;
decltype(ircd::m::push::request::id_ctr)
ircd::m::push::request::id_ctr;
//
// match
//
namespace ircd::m::push
{
static bool unknown_condition_kind(const event &, const cond &, const match::opts &);
static bool sender_notification_permission(const event &, const cond &, const match::opts &);
static bool contains_display_name(const event &, const cond &, const match::opts &);
static bool state_key_user_mxid(const event &, const cond &, const match::opts &);
static bool contains_user_mxid(const event &, const cond &, const match::opts &);
static bool room_member_count(const event &, const cond &, const match::opts &);
static bool event_match(const event &, const cond &, const match::opts &);
}
decltype(ircd::m::push::match::cond_kind)
ircd::m::push::match::cond_kind
{
event_match,
room_member_count,
contains_user_mxid,
state_key_user_mxid,
contains_display_name,
sender_notification_permission,
unknown_condition_kind,
};
decltype(ircd::m::push::match::cond_kind_name)
ircd::m::push::match::cond_kind_name
{
"event_match",
"room_member_count",
"contains_user_mxid",
"state_key_user_mxid",
"contains_display_name",
"sender_notification_permission",
};
//
// match::match
//
ircd::m::push::match::match(const event &event,
const rule &rule,
const match::opts &opts)
:boolean{[&event, &rule, &opts]
{
if(json::get<"pattern"_>(rule))
{
const push::cond cond
{
{ "kind", "event_match" },
{ "key", "content.body" },
{ "pattern", json::get<"pattern"_>(rule) },
};
if(!match(event, cond, opts))
return false;
}
for(const json::object cond : json::get<"conditions"_>(rule))
if(!match(event, push::cond(cond), opts))
return false;
return true;
}}
{
}
ircd::m::push::match::match(const event &event,
const cond &cond,
const match::opts &opts)
:boolean{[&event, &cond, &opts]
{
const string_view &kind
{
json::get<"kind"_>(cond)
};
const auto pos
{
indexof(kind, string_views(cond_kind_name))
};
assert(pos <= sizeof(cond_kind_name) / sizeof(string_view));
const auto &func
{
cond_kind[pos]
};
return func(event, cond, opts);
}}
{
}
//
// push::match condition functors (internal)
//
bool
ircd::m::push::event_match(const event &event,
const cond &cond,
const match::opts &opts)
try
{
assert(json::get<"kind"_>(cond) == "event_match");
const auto &[top, path]
{
split(json::get<"key"_>(cond), '.')
};
string_view value
{
json::get(event, top, json::object{})
};
tokens(path, '.', [&value]
(const string_view &key)
{
if(!json::type(value, json::OBJECT))
return false;
value = json::object(value)[key];
if(likely(!json::type(value, json::STRING)))
return true;
value = json::string(value);
return false;
});
//TODO: XXX spec leading/trailing; not imatch
const globular_imatch pattern
{
json::get<"pattern"_>(cond)
};
return pattern(value);
}
catch(const ctx::interrupted &)
{
throw;
}
catch(const std::exception &e)
{
log::error
{
log, "Push condition 'event_match' %s :%s",
string_view{event.event_id},
e.what(),
};
return false;
}
bool
ircd::m::push::contains_user_mxid(const event &event,
const cond &cond,
const match::opts &opts)
try
{
assert(json::get<"kind"_>(cond) == "contains_user_mxid");
assert(opts.user_id);
if(unlikely(!opts.user_id))
return false;
const json::object &content
{
json::get<"content"_>(event)
};
const json::string &body
{
content["body"]
};
if(has(body, opts.user_id))
return true;
const json::string &formatted_body
{
content["formatted_body"]
};
if(has(formatted_body, opts.user_id))
return true;
return false;
}
catch(const ctx::interrupted &)
{
throw;
}
catch(const std::exception &e)
{
log::error
{
log, "Push condition 'contains_user_mxid' %s :%s",
string_view{event.event_id},
e.what(),
};
return false;
}
bool
ircd::m::push::state_key_user_mxid(const event &event,
const cond &cond,
const match::opts &opts)
try
{
assert(json::get<"kind"_>(cond) == "state_key_user_mxid");
const auto &state_key
{
json::get<"state_key"_>(event)
};
assert(opts.user_id);
return state_key == opts.user_id;
}
catch(const ctx::interrupted &)
{
throw;
}
catch(const std::exception &e)
{
log::error
{
log, "Push condition 'state_key_user_mxid' %s :%s",
string_view{event.event_id},
e.what(),
};
return false;
}
bool
ircd::m::push::contains_display_name(const event &event,
const cond &cond,
const match::opts &opts)
try
{
assert(json::get<"kind"_>(cond) == "contains_display_name");
const json::object &content
{
json::get<"content"_>(event)
};
const json::string &body
{
content["body"]
};
if(!body)
return false;
assert(opts.user_id);
if(unlikely(!opts.user_id))
return false;
const m::user::profile profile
{
opts.user_id
};
bool ret{false};
profile.get(std::nothrow, "displayname", [&ret, &body]
(const string_view &, const json::string &displayname)
{
ret = displayname && has(body, displayname);
});
return ret;
}
catch(const ctx::interrupted &)
{
throw;
}
catch(const std::exception &e)
{
log::error
{
log, "Push condition 'contains_display_name' %s :%s",
string_view{event.event_id},
e.what(),
};
return false;
}
bool
ircd::m::push::sender_notification_permission(const event &event,
const cond &cond,
const match::opts &opts)
try
{
assert(json::get<"kind"_>(cond) == "sender_notification_permission");
const auto &key
{
json::get<"key"_>(cond)
};
const m::room room
{
at<"room_id"_>(event)
};
const room::power power
{
room
};
const auto &user_level
{
power.level_user(at<"sender"_>(event))
};
int64_t required_level
{
room::power::default_power_level
};
power.for_each("notifications", [&required_level, &key]
(const auto &name, const auto &level) noexcept
{
if(name == key)
{
required_level = level;
return false;
}
else return true;
});
const bool ret
{
user_level >= required_level
};
if(!ret)
log::dwarning
{
log, "Insufficient power level %ld for %s to notify '%s' to %s (require:%ld).",
user_level,
string_view{json::get<"sender"_>(event)},
key,
string_view{room.room_id},
required_level
};
return ret;
}
catch(const ctx::interrupted &)
{
throw;
}
catch(const std::exception &e)
{
log::error
{
log, "Push condition 'sender_notification_permission' %s :%s",
string_view{event.event_id},
e.what(),
};
return false;
}
bool
ircd::m::push::room_member_count(const event &event,
const cond &cond,
const match::opts &opts)
try
{
assert(json::get<"kind"_>(cond) == "room_member_count");
const m::room room
{
json::get<"room_id"_>(event)
};
const m::room::members members
{
room
};
const auto &is
{
json::get<"is"_>(cond)
};
string_view valstr(is);
while(valstr && !all_of<std::isdigit>(valstr))
valstr.pop_front();
const ulong val
{
lex_cast<ulong>(valstr)
};
const string_view op
{
begin(is), begin(valstr)
};
switch(hash(op))
{
default:
case "=="_:
return
val?
members.count("join") == val:
members.empty("join");
case ">="_:
return
val?
members.count("join") >= val:
true;
case "<="_:
return
val?
members.count("join") <= val:
members.empty("join");
case ">"_:
return
val?
members.count("join") > val:
!members.empty("join");
case "<"_:
return
val > 1?
members.count("join") < val:
val == 1?
members.empty("join"):
false;
};
}
catch(const ctx::interrupted &)
{
throw;
}
catch(const std::exception &e)
{
log::error
{
log, "Push condition 'room_member_count' %s :%s",
string_view{event.event_id},
e.what(),
};
return false;
}
bool
ircd::m::push::unknown_condition_kind(const event &event,
const cond &cond,
const match::opts &opts)
{
const string_view &kind
{
json::get<"kind"_>(cond)
};
log::derror
{
log, "Push condition for %s by %s :unknown kind '%s' rule always fails...",
string_view{event.event_id},
string_view{opts.user_id},
kind,
};
return false;
}
//
// rule
//
bool
ircd::m::push::rule::for_each(const path &path,
const closure_bool &closure)
{
using json::at;
char typebuf[event::TYPE_MAX_SIZE];
const string_view &type
{
make_type(typebuf, path)
};
return events::type::for_each_in(type, [&closure]
(const string_view &type, const event::idx &event_idx)
{
static const event::fetch::opts fopts
{
event::keys::include
{
"content",
"room_id",
"sender",
"state_key",
}
};
if(!m::room::state::present(event_idx))
return true;
const m::event::fetch event
{
std::nothrow, event_idx, fopts
};
if(!event.valid)
return true;
const m::user::id &sender
{
at<"sender"_>(event)
};
const m::room::id &room_id
{
at<"room_id"_>(event)
};
if(!my(sender) || !m::user::room::is(room_id, sender))
return true;
const push::path path
{
make_path(type, at<"state_key"_>(event))
};
return closure(at<"sender"_>(event), path, at<"content"_>(event));
});
}
bool
ircd::m::push::notifying(const rule &rule)
{
const json::array &actions
{
json::get<"actions"_>(rule)
};
for(const string_view &action : actions)
{
if(!json::type(action, json::STRING))
continue;
const json::string &string
{
action
};
if(string == "notify")
return true;
if(string == "coalesce")
return true;
}
return false;
}
bool
ircd::m::push::highlighting(const rule &rule)
{
const json::array &actions
{
json::get<"actions"_>(rule)
};
for(const string_view &action : actions)
{
if(!json::type(action, json::OBJECT))
continue;
const json::object &object
{
action
};
const json::string set_tweak
{
object["set_tweak"]
};
if(set_tweak != "highlight")
continue;
const auto &value
{
object["value"]
};
// Spec sez: If a highlight tweak is given with no value, its value is
// defined to be true. If no highlight tweak is given at all then the
// value of highlight is defined to be false.
return !value || value == "true";
}
return false;
}
//
// path
//
ircd::m::push::path
ircd::m::push::make_path(const event &event)
{
return make_path(at<"type"_>(event), at<"state_key"_>(event));
}
ircd::m::push::path
ircd::m::push::make_path(const string_view &type,
const string_view &state_key)
{
if(unlikely(!startswith(type, rule::type_prefix)))
throw NOT_A_RULE
{
"Type '%s' does not start with prefix '%s'",
type,
rule::type_prefix,
};
const auto unprefixed
{
lstrip(lstrip(type, rule::type_prefix), '.')
};
const auto &[scope, kind]
{
split(unprefixed, '.')
};
return path
{
scope, kind, state_key
};
}
ircd::string_view
ircd::m::push::make_type(const mutable_buffer &buf,
const path &path)
{
const auto &[scope, kind, ruleid]
{
path
};
if(!scope)
return fmt::sprintf
{
buf, "%s.",
rule::type_prefix,
};
else if(!kind)
return fmt::sprintf
{
buf, "%s.%s.",
rule::type_prefix,
scope,
};
return fmt::sprintf
{
buf, "%s.%s.%s",
rule::type_prefix,
scope,
kind,
};
}
decltype(ircd::m::push::rules::defaults)
ircd::m::push::rules::defaults{R"(
{
"override":
[
{
"rule_id": ".m.rule.master",
"default": true,
"enabled": false,
"conditions": [],
"actions":
[
"dont_notify"
]
},
{
"rule_id": ".m.rule.suppress_notices",
"default": true,
"enabled": true,
"conditions":
[
{
"kind": "event_match",
"key": "content.msgtype",
"pattern": "m.notice"
}
],
"actions":
[
"dont_notify"
]
},
{
"rule_id": ".m.rule.invite_for_me",
"default": true,
"enabled": true,
"conditions":
[
{
"key": "type",
"kind": "event_match",
"pattern": "m.room.member"
},
{
"key": "content.membership",
"kind": "event_match",
"pattern": "invite"
},
{
"kind": "state_key_user_mxid"
}
],
"actions":
[
"notify",
{
"set_tweak": "sound",
"value": "default"
},
{
"set_tweak": "highlight",
"value": false
}
]
},
{
"rule_id": ".m.rule.member_event",
"default": true,
"enabled": true,
"conditions":
[
{
"key": "type",
"kind": "event_match",
"pattern": "m.room.member"
}
],
"actions":
[
"dont_notify"
]
},
{
"rule_id": ".m.rule.contains_display_name",
"default": true,
"enabled": true,
"conditions":
[
{
"kind": "contains_display_name"
}
],
"actions":
[
"notify",
{
"set_tweak": "sound",
"value": "default"
},
{
"set_tweak": "highlight"
}
]
},
{
"rule_id": ".m.rule.tombstone",
"default": true,
"enabled": true,
"conditions":
[
{
"kind": "event_match",
"key": "type",
"pattern": "m.room.tombstone"
},
{
"kind": "event_match",
"key": "state_key",
"pattern": ""
}
],
"actions":
[
"notify",
{
"set_tweak": "highlight",
"value": true
}
]
},
{
"rule_id": ".m.rule.roomnotif",
"default": true,
"enabled": true,
"conditions":
[
{
"kind": "event_match",
"key": "content.body",
"pattern": "@room"
},
{
"kind": "sender_notification_permission",
"key": "room"
}
],
"actions":
[
"notify",
{
"set_tweak": "highlight",
"value": true
}
]
},
{
"rule_id": ".m.rule.reaction",
"default": true,
"enabled": true,
"conditions":
[
{
"kind": "event_match",
"key": "type",
"pattern": "m.reaction"
}
],
"actions":
[
"dont_notify"
]
}
],
"content":
[
{
"rule_id": ".m.rule.contains_user_name",
"default": true,
"enabled": true,
"conditions":
[
{
"kind": "contains_user_mxid"
}
],
"actions":
[
"notify",
{
"set_tweak": "sound",
"value": "default"
},
{
"set_tweak": "highlight",
"value": true
}
]
}
],
"underride":
[
{
"rule_id": ".m.rule.call",
"default": true,
"enabled": true,
"conditions":
[
{
"key": "type",
"kind": "event_match",
"pattern": "m.call.invite"
}
],
"actions":
[
"notify",
{
"set_tweak": "sound",
"value": "ring"
},
{
"set_tweak": "highlight",
"value": false
}
]
},
{
"rule_id": ".m.rule.encrypted_room_one_to_one",
"default": true,
"enabled": true,
"conditions":
[
{
"kind": "event_match",
"key": "type",
"pattern": "m.room.encrypted"
},
{
"kind": "room_member_count",
"is": "2"
}
],
"actions":
[
"notify",
{
"set_tweak": "sound",
"value": "default"
},
{
"set_tweak": "highlight",
"value": false
}
]
},
{
"rule_id": ".m.rule.room_one_to_one",
"default": true,
"enabled": true,
"conditions":
[
{
"kind": "event_match",
"key": "type",
"pattern": "m.room.message"
},
{
"kind": "room_member_count",
"is": "2"
}
],
"actions":
[
"notify",
{
"set_tweak": "sound",
"value": "default"
},
{
"set_tweak": "highlight",
"value": false
}
]
},
{
"rule_id": ".m.rule.message",
"default": true,
"enabled": false,
"conditions":
[
{
"kind": "event_match",
"key": "type",
"pattern": "m.room.message"
}
],
"actions":
[
"notify",
{
"set_tweak": "highlight",
"value": false
}
]
},
{
"rule_id": ".m.rule.encrypted",
"default": true,
"enabled": true,
"conditions":
[
{
"kind": "event_match",
"key": "type",
"pattern": "m.room.encrypted"
}
],
"actions":
[
"notify",
{
"set_tweak": "highlight",
"value": false
}
]
}
]
}
)"};