64 lines
1.5 KiB
Rust
64 lines
1.5 KiB
Rust
use std::{borrow::Borrow, iter::once};
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use axum::extract::State;
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use conduwuit::{Err, Result, at, err, info};
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use futures::{StreamExt, TryStreamExt};
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use ruma::{OwnedEventId, api::federation::event::get_room_state_ids};
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use super::AccessCheck;
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use crate::Ruma;
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/// # `GET /_matrix/federation/v1/state_ids/{roomId}`
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///
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/// Retrieves a snapshot of a room's state at a given event, in the form of
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/// event IDs.
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pub(crate) async fn get_room_state_ids_route(
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State(services): State<crate::State>,
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body: Ruma<get_room_state_ids::v1::Request>,
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) -> Result<get_room_state_ids::v1::Response> {
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AccessCheck {
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services: &services,
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origin: body.origin(),
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room_id: &body.room_id,
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event_id: None,
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}
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.check()
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.await?;
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if !services
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.rooms
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.state_cache
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.server_in_room(services.globals.server_name(), &body.room_id)
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.await
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{
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info!(
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origin = body.origin().as_str(),
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"Refusing to serve state for room we aren't participating in"
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);
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return Err!(Request(NotFound("This server is not participating in that room.")));
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}
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let shortstatehash = services
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.rooms
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.state_accessor
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.pdu_shortstatehash(&body.event_id)
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.await
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.map_err(|_| err!(Request(NotFound("Pdu state not found."))))?;
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let pdu_ids: Vec<OwnedEventId> = services
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.rooms
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.state_accessor
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.state_full_ids(shortstatehash)
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.map(at!(1))
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.collect()
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.await;
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let auth_chain_ids = services
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.rooms
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.auth_chain
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.event_ids_iter(&body.room_id, once(body.event_id.borrow()))
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.try_collect()
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.await?;
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Ok(get_room_state_ids::v1::Response { auth_chain_ids, pdu_ids })
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}
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