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Add closest_parent method to Rooms Db insert in order /send pdus

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Devin Ragotzy 2020-11-08 14:44:02 -05:00 committed by Timo Kösters
parent 96dd3b2880
commit db8a0c5d69
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GPG Key ID: 24DA7517711A2BA4
4 changed files with 334 additions and 28 deletions
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1
Cargo.lock generated
View File

@ -2258,6 +2258,7 @@ checksum = "7345c971d1ef21ffdbd103a75990a15eb03604fc8b8852ca8cb418ee1a099028"
[[package]]
name = "state-res"
version = "0.1.0"
source = "git+https://github.com/ruma/state-res?branch=timo-spec-comp#1cd1a16cdefabb126a781a50b3d5eb1fdb3d3afb"
dependencies = [
"itertools",
"js_int",

8
Cargo.toml
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@ -24,7 +24,7 @@ ruma = { git = "https://github.com/DevinR528/ruma", features = ["rand", "client-
# Used when doing state resolution
# state-res = { git = "https://github.com/timokoesters/state-res", branch = "spec-comp", features = ["unstable-pre-spec"] }
state-res = { git = "https://github.com/ruma/state-res", branch = "timo-spec-comp", features = ["unstable-pre-spec"] }
state-res = { git = "https://github.com/ruma/state-res", branch = "timo-spec-comp", features = ["unstable-pre-spec", "gen-eventid"] }
# state-res = { path = "../../state-res", features = ["unstable-pre-spec"] }
# Used for long polling
@ -78,6 +78,6 @@ path = "src/lib.rs"
# ruma = { path = "../ruma/ruma", features = ["rand", "client-api", "federation-api", "unstable-exhaustive-types", "unstable-pre-spec", "unstable-synapse-quirks"] }
# # ruma = { git = "https://github.com/ruma/ruma", rev = "64b9c646d15a359d62ab464a95176ff94adb2554", features = ["rand", "client-api", "federation-api", "unstable-exhaustive-types", "unstable-pre-spec", "unstable-synapse-quirks"]}
[patch."https://github.com/ruma/state-res"]
state-res = { path = "../../state-res", features = ["unstable-pre-spec"] }
# state-res = { git = "https://github.com/ruma/state-res", branch = "timo-spec-comp" }
# [patch."https://github.com/ruma/state-res"]
# state-res = { path = "../../state-res", features = ["unstable-pre-spec", "gen-eventid"] }
# # state-res = { git = "https://github.com/ruma/state-res", branch = "timo-spec-comp" }

57
src/database/rooms.rs
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@ -35,6 +35,11 @@ use super::admin::AdminCommand;
/// hashing the entire state.
pub type StateHashId = IVec;
pub enum ClosestParent {
Append,
Insert(u64),
}
#[derive(Clone)]
pub struct Rooms {
pub edus: edus::RoomEdus,
@ -74,7 +79,10 @@ impl StateStore for Rooms {
.get_pdu_id(event_id)
.map_err(StateError::custom)?
.ok_or_else(|| {
StateError::NotFound("PDU via room_id and event_id not found in the db.".into())
StateError::NotFound(format!(
"PDU via room_id and event_id not found in the db.\n{}",
event_id.as_str()
))
})?;
serde_json::from_slice(
@ -395,6 +403,47 @@ impl Rooms {
}
}
pub fn get_closest_parent(
&self,
incoming_prev_ids: &[EventId],
their_state: &BTreeMap<EventId, Arc<StateEvent>>,
) -> Result<Option<ClosestParent>> {
match self.pduid_pdu.last()? {
Some(val)
if incoming_prev_ids.contains(
&serde_json::from_slice::<PduEvent>(&val.1)
.map_err(|_| {
Error::bad_database("last DB entry contains invalid PDU bytes")
})?
.event_id,
) =>
{
Ok(Some(ClosestParent::Append))
}
_ => {
let mut prev_ids = incoming_prev_ids.to_vec();
while let Some(id) = prev_ids.pop() {
match self.get_pdu_id(&id)? {
Some(pdu_id) => {
return Ok(Some(ClosestParent::Insert(self.pdu_count(&pdu_id)?)));
}
None => {
prev_ids.extend(their_state.get(&id).map_or(
Err(Error::BadServerResponse(
"Failed to find previous event for PDU in state",
)),
// `prev_event_ids` will return an empty Vec instead of failing
// so it works perfect for our use here
|pdu| Ok(pdu.prev_event_ids()),
)?);
}
}
}
Ok(None)
}
}
}
/// Returns the leaf pdus of a room.
pub fn get_pdu_leaves(&self, room_id: &RoomId) -> Result<Vec<EventId>> {
let mut prefix = room_id.as_bytes().to_vec();
@ -438,6 +487,9 @@ impl Rooms {
#[allow(clippy::too_many_arguments)]
/// Creates a new persisted data unit and adds it to a room.
///
/// By this point the incoming event should be fully authenticated, no auth happens
/// in `append_pdu`.
pub fn append_pdu(
&self,
pdu: &PduEvent,
@ -554,6 +606,7 @@ impl Rooms {
self.stateid_pduid
.scan_prefix(&prefix)
.filter_map(|pdu| pdu.map_err(|e| error!("{}", e)).ok())
// Chop the old state_hash out leaving behind the (EventType, StateKey)
.map(|(k, v)| (k.subslice(prefix.len(), k.len() - prefix.len()), v))
.collect::<HashMap<IVec, IVec>>()
} else {
@ -851,7 +904,7 @@ impl Rooms {
.filter_map(|r| r.ok())
.filter(|server| &**server != globals.server_name())
{
sending.send_pdu(server, &pdu_id)?;
sending.send_pdu(&server, &pdu_id)?;
}
Ok(pdu.event_id)

294
src/server_server.rs
View File

@ -1,4 +1,7 @@
use crate::{client_server, ConduitResult, Database, Error, PduEvent, Result, Ruma};
use crate::{
client_server, database::rooms::ClosestParent, utils, ConduitResult, Database, Error, PduEvent,
Result, Ruma,
};
use get_profile_information::v1::ProfileField;
use http::header::{HeaderValue, AUTHORIZATION, HOST};
use log::warn;
@ -381,44 +384,266 @@ pub async fn send_transaction_message_route<'a>(
}
//dbg!(&*body);
// TODO: For RoomVersion6 we must check that Raw<..> is canonical do we?
// SPEC:
// Servers MUST strictly enforce the JSON format specified in the appendices.
// This translates to a 400 M_BAD_JSON error on most endpoints, or discarding of
// events over federation. For example, the Federation API's /send endpoint would
// discard the event whereas the Client Server API's /send/{eventType} endpoint
// would return a M_BAD_JSON error.
let mut resolved_map = BTreeMap::new();
for pdu in &body.pdus {
let mut value = serde_json::from_str(pdu.json().get())
.expect("converting raw jsons to values always works");
let event_id = EventId::try_from(&*format!(
"${}",
ruma::signatures::reference_hash(&value).expect("ruma can calculate reference hashes")
))
.expect("ruma's reference hashes are valid event ids");
value
.as_object_mut()
.expect("ruma pdus are json objects")
.insert("event_id".to_owned(), event_id.to_string().into());
println!("LOOP");
let (event_id, value) = process_incoming_pdu(pdu);
let pdu = serde_json::from_value::<PduEvent>(value.clone())
.expect("all ruma pdus are conduit pdus");
if db.rooms.exists(&pdu.room_id)? {
let room_id = &pdu.room_id;
if value.get("state_key").is_none() {
if !db.rooms.is_joined(&pdu.sender, &pdu.room_id)? {
// TODO: auth rules apply to all events, not only those with a state key
log::error!("Unauthorized {}", pdu.kind);
return Err(Error::BadRequest(
ruma::api::client::error::ErrorKind::Forbidden,
"Event is not authorized",
));
}
// TODO: We should be doing the same get_closest_parent thing here too?
// same as for state events ~100 lines down
let count = db.globals.next_count()?;
let mut pdu_id = pdu.room_id.as_bytes().to_vec();
pdu_id.push(0xff);
pdu_id.extend_from_slice(&count.to_be_bytes());
db.rooms.append_to_state(&pdu_id, &pdu)?;
db.rooms.append_pdu(
&pdu,
&value,
count,
pdu_id.clone().into(),
pdu_id.into(),
&db.globals,
&db.account_data,
&db.admin,
)?;
resolved_map.insert(event_id, Ok::<(), String>(()));
continue;
}
let now = std::time::Instant::now();
let get_state_response = match send_request(
&db.globals,
body.body.origin.clone(),
ruma::api::federation::event::get_room_state::v1::Request {
room_id,
event_id: &event_id,
},
)
.await
{
Ok(res) => res,
// We can't hard fail because there are some valid errors, just
// keep checking PDU's
//
// As an example a possible error
// {"errcode":"M_FORBIDDEN","error":"Host not in room."}
Err(err) => {
log::error!("Request failed: {}", err);
resolved_map.insert(event_id, Err(err.to_string()));
dbg!(now.elapsed());
continue;
}
Ok(send_transaction_message::v1::Response {
pdus: BTreeMap::new(),
};
dbg!(now.elapsed());
let their_current_state = get_state_response
.pdus
.iter()
.chain(get_state_response.auth_chain.iter()) // add auth events
.map(|pdu| {
let (event_id, json) = process_incoming_pdu(pdu);
(
event_id.clone(),
std::sync::Arc::new(
// When creating a StateEvent the event_id arg will be used
// over any found in the json and it will not use ruma::reference_hash
// to generate one
state_res::StateEvent::from_id_value(event_id, json)
.expect("valid pdu json"),
),
)
})
.collect::<BTreeMap<_, _>>();
if value.get("state_key").is_none() {
if !db.rooms.is_joined(&pdu.sender, &pdu.room_id)? {
// TODO: auth rules apply to all events, not only those with a state key
log::error!("Sender is not joined {}", pdu.kind);
resolved_map.insert(event_id, Err("User is not in this room".into()));
continue;
}
.into())
// // TODO: We should be doing the same get_closest_parent thing here too?
// // same as for state events ~100 lines down
// let count = db.globals.next_count()?;
// let mut pdu_id = pdu.room_id.as_bytes().to_vec();
// pdu_id.push(0xff);
// pdu_id.extend_from_slice(&count.to_be_bytes());
// db.rooms.append_pdu(
// &pdu,
// &value,
// count,
// pdu_id.into(),
// &db.globals,
// &db.account_data,
// &db.sending,
// )?;
// If the event is older than the last event in pduid_pdu Tree then find the
// closest ancestor we know of and insert after the known ancestor by
// altering the known events pduid to = same roomID + same count bytes + 0x1
// pushing a single byte every time a simple append cannot be done.
match db
.rooms
.get_closest_parent(&pdu.prev_events, &their_current_state)?
{
Some(ClosestParent::Append) => {
let count = db.globals.next_count()?;
dbg!(&count);
let mut pdu_id = room_id.as_bytes().to_vec();
pdu_id.push(0xff);
pdu_id.extend_from_slice(&count.to_be_bytes());
db.rooms.append_pdu(
&pdu,
&value,
count,
pdu_id.into(),
&db.globals,
&db.account_data,
&db.sending,
)?;
}
Some(ClosestParent::Insert(old_count)) => {
let count = old_count;
let mut pdu_id = room_id.as_bytes().to_vec();
pdu_id.push(0xff);
pdu_id.extend_from_slice(&count.to_be_bytes());
// Create a new count that is after old_count but before
// the pdu appended after
pdu_id.push(1);
db.rooms.append_pdu(
&pdu,
&value,
count,
pdu_id.into(),
&db.globals,
&db.account_data,
&db.sending,
)?;
}
_ => panic!("Not a sequential event or no parents found"),
};
resolved_map.insert(event_id, Ok::<(), String>(()));
continue;
}
let our_current_state = db.rooms.room_state_full(room_id)?;
match state_res::StateResolution::resolve(
room_id,
&ruma::RoomVersionId::Version6,
&[
our_current_state
.iter()
.map(|((ev, sk), v)| ((ev.clone(), sk.to_owned()), v.event_id.clone()))
.collect::<BTreeMap<_, _>>(),
// TODO we may not want the auth events chained in here for resolution?
their_current_state
.iter()
.map(|(_id, v)| ((v.kind(), v.state_key()), v.event_id().clone()))
.collect::<BTreeMap<_, _>>(),
],
Some(
our_current_state
.iter()
.map(|(_k, v)| (v.event_id.clone(), v.convert_for_state_res()))
.chain(
their_current_state
.iter()
.map(|(id, ev)| (id.clone(), ev.clone())),
)
.collect::<BTreeMap<_, _>>(),
),
&db.rooms,
) {
Ok(resolved) if resolved.values().any(|id| &event_id == id) => {
// If the event is older than the last event in pduid_pdu Tree then find the
// closest ancestor we know of and insert after the known ancestor by
// altering the known events pduid to = same roomID + same count bytes + 0x1
// pushing a single byte every time a simple append cannot be done.
match db
.rooms
.get_closest_parent(&pdu.prev_events, &their_current_state)?
{
Some(ClosestParent::Append) => {
let count = db.globals.next_count()?;
dbg!(&count);
let mut pdu_id = room_id.as_bytes().to_vec();
pdu_id.push(0xff);
pdu_id.extend_from_slice(&count.to_be_bytes());
db.rooms.append_pdu(
&pdu,
&value,
count,
pdu_id.into(),
&db.globals,
&db.account_data,
&db.sending,
)?;
}
Some(ClosestParent::Insert(old_count)) => {
println!("INSERT PDU FOUND {}", old_count);
let count = old_count;
let mut pdu_id = room_id.as_bytes().to_vec();
pdu_id.push(0xff);
pdu_id.extend_from_slice(&count.to_be_bytes());
// Create a new count that is after old_count but before
// the pdu appended after
pdu_id.push(1);
db.rooms.append_pdu(
&pdu,
&value,
count,
pdu_id.into(),
&db.globals,
&db.account_data,
&db.sending,
)?;
}
_ => panic!("Not a sequential event or no parents found"),
}
resolved_map.insert(event_id, Ok::<(), String>(()));
}
// If the eventId is not found in the resolved state auth has failed
Ok(_) => {
// TODO have state_res give the actual auth error in this case
resolved_map.insert(
event_id,
Err("This event failed authentication, not found in resolved set".into()),
);
}
Err(e) => {
resolved_map.insert(event_id, Err(e.to_string()));
}
};
}
Ok(send_transaction_message::v1::Response { pdus: resolved_map }.into())
}
#[cfg_attr(
@ -529,3 +754,30 @@ pub fn get_user_devices_route<'a>(
.into())
}
*/
/// Generates a correct eventId for the incoming pdu.
///
/// Returns a `state_res::StateEvent` which can be converted freely and has accessor methods.
fn process_incoming_pdu(pdu: &ruma::Raw<ruma::events::pdu::Pdu>) -> (EventId, serde_json::Value) {
let mut value = serde_json::from_str(pdu.json().get())
.expect("converting raw jsons to values always works");
let event_id = EventId::try_from(&*format!(
"${}",
ruma::signatures::reference_hash(&value, &RoomVersionId::Version6)
.expect("ruma can calculate reference hashes")
))
.expect("ruma's reference hashes are valid event ids");
value.insert(
"event_id".to_owned(),
serde_json::json!(event_id)
.try_into()
.expect("EventId is a valid CanonicalJsonValue"),
);
(
event_id,
serde_json::to_value(value).expect("JSON Value is a CanonicalJsonValue"),
)
}