forked from Telodendria/Telodendria
Begin prototyping state resolution API.
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85
src/State.c
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85
src/State.c
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/*
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* Copyright (C) 2022-2023 Jordan Bancino <@jordan:bancino.net>
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <State.h>
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#include <HashMap.h>
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#include <Array.h>
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#include <Room.h>
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#include <Event.h>
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static HashMap *
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StateResolveV1(Array *states)
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{
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return NULL;
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}
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static HashMap *
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StateResolveV2(Array *states)
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{
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return NULL;
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}
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HashMap *
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StateResolve(Room *room, HashMap *event)
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{
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Array *states;
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size_t i;
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Array *prevEvents;
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if (!room || !event)
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{
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return NULL;
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}
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/* TODO: Return cached state if it exists */
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states = ArrayCreate();
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if (!states)
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{
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return NULL;
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}
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prevEvents = HashMapGet(event, "prev_events");
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for (i = 0; i < ArraySize(prevEvents); i++)
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{
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HashMap *prevEvent = ArrayGet(prevEvents, i);
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HashMap *state = StateResolve(room, prevEvent);
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/* TODO: Apply prevEvent to state if it is a state event */
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ArrayAdd(states, state);
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}
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switch (RoomVersionGet(room))
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{
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case 1:
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return StateResolveV1(states);
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default:
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return StateResolveV2(states);
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}
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}
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@ -49,6 +49,7 @@ extern char * EventContentHash(HashMap *);
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* an event comes in from the federation APIs or the
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* homeserver has finished generating a PDU for a client
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* event.
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*/
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extern char * EventIdGet(Room *, HashMap *);
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#endif /* TELODENDRIA_EVENT_H */
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46
src/include/State.h
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46
src/include/State.h
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/*
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* Copyright (C) 2022-2023 Jordan Bancino <@jordan:bancino.net>
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef TELODENDRIA_STATE_H
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#define TELODENDRIA_STATE_H
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/***
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* @Nm State
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* @Nd The Matrix state resolution algorithms.
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* @Dd July 6 2023
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*
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* .Nm implements the state resolution algorithms required
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* to maintain room state.
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*/
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#include <HashMap.h>
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#include <Room.h>
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/**
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* Compute the room state before the specified event was sent.
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*/
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extern HashMap * StateResolve(Room *, HashMap *);
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#endif /* TELODENDRIA_STATE_H */
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