mirror of
https://github.com/matrix-construct/construct
synced 2024-09-12 11:39:27 +02:00
191 lines
4.1 KiB
C++
191 lines
4.1 KiB
C++
// Matrix Construct
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//
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// Copyright (C) Matrix Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2019 Jason Volk <jason@zemos.net>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice is present in all copies. The
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// full license for this software is available in the LICENSE file.
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///////////////////////////////////////////////////////////////////////////////
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//
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// m/filter.h
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//
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//TODO: globular expression
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//TODO: tribool for contains_url; we currently ignore the false value.
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bool
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ircd::m::match(const room_event_filter &filter,
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const event &event)
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{
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if(json::get<"contains_url"_>(filter) == true)
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if(!at<"content"_>(event).has("url"))
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return false;
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for(const auto &room_id : json::get<"not_rooms"_>(filter))
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if(at<"room_id"_>(event) == unquote(room_id))
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return false;
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if(empty(json::get<"rooms"_>(filter)))
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return match(event_filter{filter}, event);
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for(const auto &room_id : json::get<"rooms"_>(filter))
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if(at<"room_id"_>(event) == unquote(room_id))
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return match(event_filter{filter}, event);
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return false;
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}
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//TODO: globular expression
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bool
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ircd::m::match(const event_filter &filter,
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const event &event)
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{
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for(const auto &type : json::get<"not_types"_>(filter))
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if(at<"type"_>(event) == unquote(type))
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return false;
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for(const auto &sender : json::get<"not_senders"_>(filter))
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if(at<"sender"_>(event) == unquote(sender))
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return false;
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if(empty(json::get<"senders"_>(filter)) && empty(json::get<"types"_>(filter)))
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return true;
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if(empty(json::get<"senders"_>(filter)))
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{
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for(const auto &type : json::get<"types"_>(filter))
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if(at<"type"_>(event) == unquote(type))
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return true;
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return false;
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}
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if(empty(json::get<"types"_>(filter)))
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{
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for(const auto &sender : json::get<"senders"_>(filter))
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if(at<"sender"_>(event) == unquote(sender))
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return true;
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return false;
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}
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return true;
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}
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//
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// filter
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//
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/// Convenience interface for filters out of common `?filter=` query string
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/// arguments. This function expects a raw urlencoded value of the filter
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/// query parameter. It detects if the value is an "inline" filter by being
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/// a valid JSON object; otherwise it considers the value an ID and fetches
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/// the filter stored previously by the user.
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std::string
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ircd::m::filter::get(const string_view &val,
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const m::user &user)
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{
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if(!val)
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return {};
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const bool is_inline
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{
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startswith(val, "{") || startswith(val, "%7B")
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};
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if(is_inline)
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return util::string(val.size(), [&val]
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(const mutable_buffer &buf)
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{
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return url::decode(buf, val);
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});
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if(!user.user_id)
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return {};
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char idbuf[m::event::STATE_KEY_MAX_SIZE];
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const string_view &id
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{
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url::decode(idbuf, val)
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};
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const m::user::filter filter
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{
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user
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};
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return filter.get(id);
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}
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//
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// filter::filter
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//
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ircd::m::filter::filter(const user &user,
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const string_view &filter_id,
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const mutable_buffer &buf)
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{
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const json::object &obj
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{
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user::filter(user).get(buf, filter_id)
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};
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new (this) m::filter
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{
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obj
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};
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}
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//
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// room_filter
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//
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ircd::m::room_filter::room_filter(const mutable_buffer &buf,
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const json::members &members)
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:super_type::tuple
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{
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json::stringify(mutable_buffer{buf}, members)
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}
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{
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}
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//
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// state_filter
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//
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ircd::m::state_filter::state_filter(const mutable_buffer &buf,
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const json::members &members)
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:super_type::tuple
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{
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json::stringify(mutable_buffer{buf}, members)
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}
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{
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}
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//
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// room_event_filter
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//
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ircd::m::room_event_filter::room_event_filter(const mutable_buffer &buf,
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const json::members &members)
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:super_type::tuple
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{
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json::stringify(mutable_buffer{buf}, members)
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}
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{
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}
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//
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// event_filter
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//
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ircd::m::event_filter::event_filter(const mutable_buffer &buf,
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const json::members &members)
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:super_type::tuple
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{
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json::stringify(mutable_buffer{buf}, members)
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}
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{
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}
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