conduit/src/client_server/membership.rs

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use super::State;
use crate::{
client_server,
pdu::{PduBuilder, PduEvent},
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utils, ConduitResult, Database, Error, Result, Ruma,
};
use log::{error, info, warn};
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use ruma::{
api::{
client::{
error::ErrorKind,
r0::membership::{
ban_user, forget_room, get_member_events, invite_user, join_room_by_id,
join_room_by_id_or_alias, joined_members, joined_rooms, kick_user, leave_room,
unban_user, IncomingThirdPartySigned,
},
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},
federation,
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},
events::{pdu::Pdu, room::member, EventType},
serde::{to_canonical_value, CanonicalJsonObject, Raw},
EventId, RoomId, RoomVersionId, ServerName, UserId,
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};
use std::{collections::BTreeMap, convert::TryFrom, sync::Arc};
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#[cfg(feature = "conduit_bin")]
use rocket::{get, post};
#[cfg_attr(
feature = "conduit_bin",
post("/_matrix/client/r0/rooms/<_>/join", data = "<body>")
)]
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#[tracing::instrument(skip(db, body))]
pub async fn join_room_by_id_route(
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db: State<'_, Database>,
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body: Ruma<join_room_by_id::Request<'_>>,
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) -> ConduitResult<join_room_by_id::Response> {
join_room_by_id_helper(
&db,
body.sender_user.as_ref(),
&body.room_id,
&[body.room_id.server_name().to_owned()],
body.third_party_signed.as_ref(),
)
.await
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}
#[cfg_attr(
feature = "conduit_bin",
post("/_matrix/client/r0/join/<_>", data = "<body>")
)]
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#[tracing::instrument(skip(db, body))]
pub async fn join_room_by_id_or_alias_route(
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db: State<'_, Database>,
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body: Ruma<join_room_by_id_or_alias::Request<'_>>,
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) -> ConduitResult<join_room_by_id_or_alias::Response> {
let (servers, room_id) = match RoomId::try_from(body.room_id_or_alias.clone()) {
Ok(room_id) => (vec![room_id.server_name().to_owned()], room_id),
Err(room_alias) => {
let response = client_server::get_alias_helper(&db, &room_alias).await?;
(response.0.servers, response.0.room_id)
}
};
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let join_room_response = join_room_by_id_helper(
&db,
body.sender_user.as_ref(),
&room_id,
&servers,
body.third_party_signed.as_ref(),
)
.await?;
db.flush().await?;
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Ok(join_room_by_id_or_alias::Response {
room_id: join_room_response.0.room_id,
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}
.into())
}
#[cfg_attr(
feature = "conduit_bin",
post("/_matrix/client/r0/rooms/<_>/leave", data = "<body>")
)]
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#[tracing::instrument(skip(db, body))]
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pub async fn leave_room_route(
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db: State<'_, Database>,
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body: Ruma<leave_room::Request<'_>>,
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) -> ConduitResult<leave_room::Response> {
let sender_user = body.sender_user.as_ref().expect("user is authenticated");
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let mut event = serde_json::from_value::<Raw<member::MemberEventContent>>(
db.rooms
.room_state_get(
&body.room_id,
&EventType::RoomMember,
&sender_user.to_string(),
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)?
.ok_or(Error::BadRequest(
ErrorKind::BadState,
"Cannot leave a room you are not a member of.",
))?
.content,
)
.expect("from_value::<Raw<..>> can never fail")
.deserialize()
.map_err(|_| Error::bad_database("Invalid member event in database."))?;
event.membership = member::MembershipState::Leave;
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db.rooms.build_and_append_pdu(
PduBuilder {
event_type: EventType::RoomMember,
content: serde_json::to_value(event).expect("event is valid, we just created it"),
unsigned: None,
state_key: Some(sender_user.to_string()),
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redacts: None,
},
&sender_user,
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&body.room_id,
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&db,
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)?;
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db.flush().await?;
Ok(leave_room::Response::new().into())
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}
#[cfg_attr(
feature = "conduit_bin",
post("/_matrix/client/r0/rooms/<_>/invite", data = "<body>")
)]
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#[tracing::instrument(skip(db, body))]
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pub async fn invite_user_route(
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db: State<'_, Database>,
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body: Ruma<invite_user::Request<'_>>,
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) -> ConduitResult<invite_user::Response> {
let sender_user = body.sender_user.as_ref().expect("user is authenticated");
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if let invite_user::IncomingInvitationRecipient::UserId { user_id } = &body.recipient {
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db.rooms.build_and_append_pdu(
PduBuilder {
event_type: EventType::RoomMember,
content: serde_json::to_value(member::MemberEventContent {
membership: member::MembershipState::Invite,
displayname: db.users.displayname(&user_id)?,
avatar_url: db.users.avatar_url(&user_id)?,
is_direct: None,
third_party_invite: None,
})
.expect("event is valid, we just created it"),
unsigned: None,
state_key: Some(user_id.to_string()),
redacts: None,
},
&sender_user,
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&body.room_id,
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&db,
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)?;
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db.flush().await?;
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Ok(invite_user::Response.into())
} else {
Err(Error::BadRequest(ErrorKind::NotFound, "User not found."))
}
}
#[cfg_attr(
feature = "conduit_bin",
post("/_matrix/client/r0/rooms/<_>/kick", data = "<body>")
)]
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#[tracing::instrument(skip(db, body))]
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pub async fn kick_user_route(
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db: State<'_, Database>,
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body: Ruma<kick_user::Request<'_>>,
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) -> ConduitResult<kick_user::Response> {
let sender_user = body.sender_user.as_ref().expect("user is authenticated");
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let mut event = serde_json::from_value::<Raw<ruma::events::room::member::MemberEventContent>>(
db.rooms
.room_state_get(
&body.room_id,
&EventType::RoomMember,
&body.user_id.to_string(),
)?
.ok_or(Error::BadRequest(
ErrorKind::BadState,
"Cannot kick member that's not in the room.",
))?
.content,
)
.expect("Raw::from_value always works")
.deserialize()
.map_err(|_| Error::bad_database("Invalid member event in database."))?;
event.membership = ruma::events::room::member::MembershipState::Leave;
// TODO: reason
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db.rooms.build_and_append_pdu(
PduBuilder {
event_type: EventType::RoomMember,
content: serde_json::to_value(event).expect("event is valid, we just created it"),
unsigned: None,
state_key: Some(body.user_id.to_string()),
redacts: None,
},
&sender_user,
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&body.room_id,
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&db,
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)?;
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db.flush().await?;
Ok(kick_user::Response::new().into())
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}
#[cfg_attr(
feature = "conduit_bin",
post("/_matrix/client/r0/rooms/<_>/ban", data = "<body>")
)]
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#[tracing::instrument(skip(db, body))]
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pub async fn ban_user_route(
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db: State<'_, Database>,
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body: Ruma<ban_user::Request<'_>>,
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) -> ConduitResult<ban_user::Response> {
let sender_user = body.sender_user.as_ref().expect("user is authenticated");
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// TODO: reason
let event = db
.rooms
.room_state_get(
&body.room_id,
&EventType::RoomMember,
&body.user_id.to_string(),
)?
.map_or(
Ok::<_, Error>(member::MemberEventContent {
membership: member::MembershipState::Ban,
displayname: db.users.displayname(&body.user_id)?,
avatar_url: db.users.avatar_url(&body.user_id)?,
is_direct: None,
third_party_invite: None,
}),
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|event| {
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let mut event =
serde_json::from_value::<Raw<member::MemberEventContent>>(event.content)
.expect("Raw::from_value always works")
.deserialize()
.map_err(|_| Error::bad_database("Invalid member event in database."))?;
event.membership = ruma::events::room::member::MembershipState::Ban;
Ok(event)
},
)?;
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db.rooms.build_and_append_pdu(
PduBuilder {
event_type: EventType::RoomMember,
content: serde_json::to_value(event).expect("event is valid, we just created it"),
unsigned: None,
state_key: Some(body.user_id.to_string()),
redacts: None,
},
&sender_user,
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&body.room_id,
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&db,
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)?;
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db.flush().await?;
Ok(ban_user::Response::new().into())
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}
#[cfg_attr(
feature = "conduit_bin",
post("/_matrix/client/r0/rooms/<_>/unban", data = "<body>")
)]
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#[tracing::instrument(skip(db, body))]
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pub async fn unban_user_route(
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db: State<'_, Database>,
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body: Ruma<unban_user::Request<'_>>,
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) -> ConduitResult<unban_user::Response> {
let sender_user = body.sender_user.as_ref().expect("user is authenticated");
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let mut event = serde_json::from_value::<Raw<ruma::events::room::member::MemberEventContent>>(
db.rooms
.room_state_get(
&body.room_id,
&EventType::RoomMember,
&body.user_id.to_string(),
)?
.ok_or(Error::BadRequest(
ErrorKind::BadState,
"Cannot unban a user who is not banned.",
))?
.content,
)
.expect("from_value::<Raw<..>> can never fail")
.deserialize()
.map_err(|_| Error::bad_database("Invalid member event in database."))?;
event.membership = ruma::events::room::member::MembershipState::Leave;
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db.rooms.build_and_append_pdu(
PduBuilder {
event_type: EventType::RoomMember,
content: serde_json::to_value(event).expect("event is valid, we just created it"),
unsigned: None,
state_key: Some(body.user_id.to_string()),
redacts: None,
},
&sender_user,
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&body.room_id,
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&db,
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)?;
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db.flush().await?;
Ok(unban_user::Response::new().into())
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}
#[cfg_attr(
feature = "conduit_bin",
post("/_matrix/client/r0/rooms/<_>/forget", data = "<body>")
)]
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#[tracing::instrument(skip(db, body))]
pub async fn forget_room_route(
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db: State<'_, Database>,
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body: Ruma<forget_room::Request<'_>>,
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) -> ConduitResult<forget_room::Response> {
let sender_user = body.sender_user.as_ref().expect("user is authenticated");
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db.rooms.forget(&body.room_id, &sender_user)?;
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db.flush().await?;
Ok(forget_room::Response::new().into())
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}
#[cfg_attr(
feature = "conduit_bin",
get("/_matrix/client/r0/joined_rooms", data = "<body>")
)]
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#[tracing::instrument(skip(db, body))]
pub async fn joined_rooms_route(
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db: State<'_, Database>,
body: Ruma<joined_rooms::Request>,
) -> ConduitResult<joined_rooms::Response> {
let sender_user = body.sender_user.as_ref().expect("user is authenticated");
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Ok(joined_rooms::Response {
joined_rooms: db
.rooms
.rooms_joined(&sender_user)
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.filter_map(|r| r.ok())
.collect(),
}
.into())
}
#[cfg_attr(
feature = "conduit_bin",
get("/_matrix/client/r0/rooms/<_>/members", data = "<body>")
)]
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#[tracing::instrument(skip(db, body))]
pub async fn get_member_events_route(
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db: State<'_, Database>,
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body: Ruma<get_member_events::Request<'_>>,
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) -> ConduitResult<get_member_events::Response> {
let sender_user = body.sender_user.as_ref().expect("user is authenticated");
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if !db.rooms.is_joined(sender_user, &body.room_id)? {
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return Err(Error::BadRequest(
ErrorKind::Forbidden,
"You don't have permission to view this room.",
));
}
Ok(get_member_events::Response {
chunk: db
.rooms
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.room_state_full(&body.room_id)?
.iter()
.filter(|(key, _)| key.0 == EventType::RoomMember)
.map(|(_, pdu)| pdu.to_member_event())
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.collect(),
}
.into())
}
#[cfg_attr(
feature = "conduit_bin",
get("/_matrix/client/r0/rooms/<_>/joined_members", data = "<body>")
)]
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#[tracing::instrument(skip(db, body))]
pub async fn joined_members_route(
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db: State<'_, Database>,
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body: Ruma<joined_members::Request<'_>>,
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) -> ConduitResult<joined_members::Response> {
let sender_user = body.sender_user.as_ref().expect("user is authenticated");
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if !db
.rooms
.is_joined(&sender_user, &body.room_id)
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.unwrap_or(false)
{
return Err(Error::BadRequest(
ErrorKind::Forbidden,
"You aren't a member of the room.",
));
}
let mut joined = BTreeMap::new();
for user_id in db.rooms.room_members(&body.room_id).filter_map(|r| r.ok()) {
let display_name = db.users.displayname(&user_id)?;
let avatar_url = db.users.avatar_url(&user_id)?;
joined.insert(
user_id,
joined_members::RoomMember {
display_name,
avatar_url,
},
);
}
Ok(joined_members::Response { joined }.into())
}
#[tracing::instrument(skip(db))]
async fn join_room_by_id_helper(
db: &Database,
sender_user: Option<&UserId>,
room_id: &RoomId,
servers: &[Box<ServerName>],
_third_party_signed: Option<&IncomingThirdPartySigned>,
) -> ConduitResult<join_room_by_id::Response> {
let sender_user = sender_user.expect("user is authenticated");
// Ask a remote server if we don't have this room
if !db.rooms.exists(&room_id)? && room_id.server_name() != db.globals.server_name() {
let mut make_join_response_and_server = Err(Error::BadServerResponse(
"No server available to assist in joining.",
));
for remote_server in servers {
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let make_join_response = db
.sending
.send_federation_request(
&db.globals,
remote_server,
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federation::membership::create_join_event_template::v1::Request {
room_id,
user_id: sender_user,
ver: &[RoomVersionId::Version5, RoomVersionId::Version6],
},
)
.await;
make_join_response_and_server = make_join_response.map(|r| (r, remote_server));
if make_join_response_and_server.is_ok() {
break;
}
}
let (make_join_response, remote_server) = make_join_response_and_server?;
let mut join_event_stub =
serde_json::from_str::<CanonicalJsonObject>(make_join_response.event.json().get())
.map_err(|_| {
Error::BadServerResponse("Invalid make_join event json received from server.")
})?;
join_event_stub.insert(
"origin".to_owned(),
to_canonical_value(db.globals.server_name())
.map_err(|_| Error::bad_database("Invalid server name found"))?,
);
join_event_stub.insert(
"origin_server_ts".to_owned(),
to_canonical_value(utils::millis_since_unix_epoch())
.expect("Timestamp is valid js_int value"),
);
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join_event_stub.insert(
"content".to_owned(),
to_canonical_value(member::MemberEventContent {
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membership: member::MembershipState::Join,
displayname: db.users.displayname(&sender_user)?,
avatar_url: db.users.avatar_url(&sender_user)?,
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is_direct: None,
third_party_invite: None,
})
.expect("event is valid, we just created it"),
);
// We don't leave the event id in the pdu because that's only allowed in v1 or v2 rooms
join_event_stub.remove("event_id");
// In order to create a compatible ref hash (EventID) the `hashes` field needs to be present
ruma::signatures::hash_and_sign_event(
db.globals.server_name().as_str(),
db.globals.keypair(),
&mut join_event_stub,
&RoomVersionId::Version6,
)
.expect("event is valid, we just created it");
// Generate event id
let event_id = EventId::try_from(&*format!(
"${}",
ruma::signatures::reference_hash(&join_event_stub, &RoomVersionId::Version6)
.expect("ruma can calculate reference hashes")
))
.expect("ruma's reference hashes are valid event ids");
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// Add event_id back
join_event_stub.insert(
"event_id".to_owned(),
to_canonical_value(&event_id).expect("EventId is a valid CanonicalJsonValue"),
);
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// It has enough fields to be called a proper event now
let join_event = join_event_stub;
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let send_join_response = db
.sending
.send_federation_request(
&db.globals,
remote_server,
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federation::membership::create_join_event::v2::Request {
room_id,
event_id: &event_id,
pdu: PduEvent::convert_to_outgoing_federation_event(join_event.clone()),
},
)
.await?;
let add_event_id = |pdu: &Raw<Pdu>| -> Result<(EventId, CanonicalJsonObject)> {
let mut value = serde_json::from_str(pdu.json().get()).map_err(|e| {
error!("{:?}: {:?}", pdu, e);
Error::BadServerResponse("Invalid PDU in server response")
})?;
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let event_id = EventId::try_from(&*format!(
"${}",
ruma::signatures::reference_hash(&value, &RoomVersionId::Version6)
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.expect("ruma can calculate reference hashes")
))
.expect("ruma's reference hashes are valid event ids");
value.insert(
"event_id".to_owned(),
to_canonical_value(&event_id)
.expect("a valid EventId can be converted to CanonicalJsonValue"),
);
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Ok((event_id, value))
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};
let count = db.globals.next_count()?;
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let mut pdu_id = room_id.as_bytes().to_vec();
pdu_id.push(0xff);
pdu_id.extend_from_slice(&count.to_be_bytes());
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let pdu = PduEvent::from_id_val(&event_id, join_event.clone())
.map_err(|_| Error::BadServerResponse("Invalid PDU in send_join response."))?;
let mut state = BTreeMap::new();
for pdu in send_join_response
.room_state
.state
.iter()
.map(add_event_id)
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.map(|r| {
let (event_id, value) = r?;
PduEvent::from_id_val(&event_id, value.clone())
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.map(|ev| (event_id, Arc::new(ev)))
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.map_err(|e| {
warn!("{:?}: {}", value, e);
Error::BadServerResponse("Invalid PDU in send_join response.")
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})
})
{
let (id, pdu) = pdu?;
info!("adding {} to outliers: {:#?}", id, pdu);
db.rooms.add_pdu_outlier(&pdu)?;
if let Some(state_key) = &pdu.state_key {
if pdu.kind == EventType::RoomMember {
let target_user_id = UserId::try_from(state_key.clone()).map_err(|_| {
Error::BadServerResponse("Invalid user id in send_join response.")
})?;
// Update our membership info, we do this here incase a user is invited
// and immediately leaves we need the DB to record the invite event for auth
db.rooms.update_membership(
&pdu.room_id,
&target_user_id,
serde_json::from_value::<member::MemberEventContent>(pdu.content.clone())
.map_err(|_| {
Error::BadRequest(
ErrorKind::InvalidParam,
"Invalid member event content.",
)
})?,
&pdu.sender,
&db.account_data,
&db.globals,
)?;
}
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state.insert((pdu.kind.clone(), state_key.clone()), pdu.event_id.clone());
}
}
state.insert(
(
pdu.kind.clone(),
pdu.state_key.clone().expect("join event has state key"),
),
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pdu.event_id.clone(),
);
db.rooms.force_state(room_id, state, &db.globals)?;
for pdu in send_join_response
.room_state
.auth_chain
.iter()
.map(add_event_id)
.map(|r| {
let (event_id, value) = r?;
PduEvent::from_id_val(&event_id, value.clone())
.map(|ev| (event_id, Arc::new(ev)))
.map_err(|e| {
warn!("{:?}: {}", value, e);
Error::BadServerResponse("Invalid PDU in send_join response.")
})
})
{
let (id, pdu) = pdu?;
info!("adding {} to outliers: {:#?}", id, pdu);
db.rooms.add_pdu_outlier(&pdu)?;
}
// We append to state before appending the pdu, so we don't have a moment in time with the
// pdu without it's state. This is okay because append_pdu can't fail.
let statehashid = db.rooms.append_to_state(&pdu, &db.globals)?;
db.rooms.append_pdu(
&pdu,
utils::to_canonical_object(&pdu).expect("Pdu is valid canonical object"),
db.globals.next_count()?,
pdu_id.into(),
&[pdu.event_id.clone()],
db,
)?;
// We set the room state after inserting the pdu, so that we never have a moment in time
// where events in the current room state do not exist
db.rooms.set_room_state(&room_id, statehashid)?;
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} else {
let event = member::MemberEventContent {
membership: member::MembershipState::Join,
displayname: db.users.displayname(&sender_user)?,
avatar_url: db.users.avatar_url(&sender_user)?,
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is_direct: None,
third_party_invite: None,
};
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db.rooms.build_and_append_pdu(
PduBuilder {
event_type: EventType::RoomMember,
content: serde_json::to_value(event).expect("event is valid, we just created it"),
unsigned: None,
state_key: Some(sender_user.to_string()),
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redacts: None,
},
&sender_user,
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&room_id,
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&db,
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)?;
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}
Ok(join_room_by_id::Response::new(room_id.clone()).into())
}