729 lines
23 KiB
Rust
729 lines
23 KiB
Rust
use crate::{
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client_server::invite_helper, database::DatabaseGuard, pdu::PduBuilder, ConduitResult, Error,
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Ruma,
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};
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use ruma::{
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api::client::{
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error::ErrorKind,
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r0::room::{self, aliases, create_room, get_room_event, upgrade_room},
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},
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events::{
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room::{
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canonical_alias::RoomCanonicalAliasEventContent,
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create::RoomCreateEventContent,
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guest_access::{GuestAccess, RoomGuestAccessEventContent},
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history_visibility::{HistoryVisibility, RoomHistoryVisibilityEventContent},
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join_rules::{JoinRule, RoomJoinRulesEventContent},
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member::{MembershipState, RoomMemberEventContent},
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name::RoomNameEventContent,
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power_levels::RoomPowerLevelsEventContent,
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tombstone::RoomTombstoneEventContent,
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topic::RoomTopicEventContent,
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},
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EventType,
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},
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int,
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serde::{CanonicalJsonObject, JsonObject},
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RoomAliasId, RoomId, RoomVersionId,
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};
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use serde_json::{json, value::to_raw_value};
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use std::{cmp::max, collections::BTreeMap, convert::TryInto, sync::Arc};
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use tracing::{info, warn};
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#[cfg(feature = "conduit_bin")]
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use rocket::{get, post};
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/// # `POST /_matrix/client/r0/createRoom`
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///
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/// Creates a new room.
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///
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/// - Room ID is randomly generated
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/// - Create alias if room_alias_name is set
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/// - Send create event
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/// - Join sender user
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/// - Send power levels event
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/// - Send canonical room alias
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/// - Send join rules
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/// - Send history visibility
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/// - Send guest access
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/// - Send events listed in initial state
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/// - Send events implied by `name` and `topic`
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/// - Send invite events
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#[cfg_attr(
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feature = "conduit_bin",
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post("/_matrix/client/r0/createRoom", data = "<body>")
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)]
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#[tracing::instrument(skip(db, body))]
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pub async fn create_room_route(
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db: DatabaseGuard,
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body: Ruma<create_room::Request<'_>>,
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) -> ConduitResult<create_room::Response> {
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let sender_user = body.sender_user.as_ref().expect("user is authenticated");
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let room_id = RoomId::new(db.globals.server_name());
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db.rooms.get_or_create_shortroomid(&room_id, &db.globals)?;
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let mutex_state = Arc::clone(
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db.globals
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.roomid_mutex_state
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.write()
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.unwrap()
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.entry(room_id.clone())
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.or_default(),
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);
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let state_lock = mutex_state.lock().await;
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if !db.globals.allow_room_creation()
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&& !body.from_appservice
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&& !db.users.is_admin(sender_user, &db.rooms, &db.globals)?
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{
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return Err(Error::BadRequest(
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ErrorKind::Forbidden,
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"Room creation has been disabled.",
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));
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}
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let alias: Option<Box<RoomAliasId>> =
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body.room_alias_name
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.as_ref()
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.map_or(Ok(None), |localpart| {
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// TODO: Check for invalid characters and maximum length
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let alias =
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RoomAliasId::parse(format!("#{}:{}", localpart, db.globals.server_name()))
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.map_err(|_| {
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Error::BadRequest(ErrorKind::InvalidParam, "Invalid alias.")
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})?;
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if db.rooms.id_from_alias(&alias)?.is_some() {
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Err(Error::BadRequest(
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ErrorKind::RoomInUse,
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"Room alias already exists.",
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))
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} else {
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Ok(Some(alias))
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}
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})?;
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let room_version = match body.room_version.clone() {
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Some(room_version) => {
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if room_version == RoomVersionId::V5 || room_version == RoomVersionId::V6 {
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room_version
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} else {
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return Err(Error::BadRequest(
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ErrorKind::UnsupportedRoomVersion,
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"This server does not support that room version.",
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));
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}
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}
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None => RoomVersionId::V6,
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};
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let content = match &body.creation_content {
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Some(content) => {
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let mut content = content
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.deserialize_as::<CanonicalJsonObject>()
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.expect("Invalid creation content");
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content.insert(
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"creator".into(),
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json!(&sender_user).try_into().map_err(|_| {
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Error::BadRequest(ErrorKind::BadJson, "Invalid creation content")
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})?,
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);
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content.insert(
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"room_version".into(),
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json!(room_version.as_str()).try_into().map_err(|_| {
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Error::BadRequest(ErrorKind::BadJson, "Invalid creation content")
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})?,
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);
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content
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}
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None => {
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let mut content = serde_json::from_str::<CanonicalJsonObject>(
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to_raw_value(&RoomCreateEventContent::new(sender_user.clone()))
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.map_err(|_| Error::BadRequest(ErrorKind::BadJson, "Invalid creation content"))?
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.get(),
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)
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.unwrap();
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content.insert(
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"room_version".into(),
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json!(room_version.as_str()).try_into().map_err(|_| {
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Error::BadRequest(ErrorKind::BadJson, "Invalid creation content")
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})?,
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);
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content
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}
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};
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// Validate creation content
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let de_result = serde_json::from_str::<CanonicalJsonObject>(
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to_raw_value(&content)
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.expect("Invalid creation content")
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.get(),
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);
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if de_result.is_err() {
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return Err(Error::BadRequest(
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ErrorKind::BadJson,
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"Invalid creation content",
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));
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}
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// 1. The room create event
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db.rooms.build_and_append_pdu(
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PduBuilder {
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event_type: EventType::RoomCreate,
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content: to_raw_value(&content).expect("event is valid, we just created it"),
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unsigned: None,
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state_key: Some("".to_owned()),
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redacts: None,
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},
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sender_user,
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&room_id,
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&db,
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&state_lock,
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)?;
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// 2. Let the room creator join
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db.rooms.build_and_append_pdu(
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PduBuilder {
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event_type: EventType::RoomMember,
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content: to_raw_value(&RoomMemberEventContent {
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membership: MembershipState::Join,
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displayname: db.users.displayname(sender_user)?,
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avatar_url: db.users.avatar_url(sender_user)?,
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is_direct: Some(body.is_direct),
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third_party_invite: None,
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blurhash: db.users.blurhash(sender_user)?,
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reason: None,
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join_authorized_via_users_server: None,
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})
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.expect("event is valid, we just created it"),
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unsigned: None,
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state_key: Some(sender_user.to_string()),
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redacts: None,
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},
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sender_user,
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&room_id,
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&db,
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&state_lock,
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)?;
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// 3. Power levels
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// Figure out preset. We need it for preset specific events
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let preset = body
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.preset
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.clone()
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.unwrap_or_else(|| match &body.visibility {
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room::Visibility::Private => create_room::RoomPreset::PrivateChat,
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room::Visibility::Public => create_room::RoomPreset::PublicChat,
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_ => create_room::RoomPreset::PrivateChat, // Room visibility should not be custom
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});
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let mut users = BTreeMap::new();
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users.insert(sender_user.clone(), int!(100));
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if preset == create_room::RoomPreset::TrustedPrivateChat {
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for invite_ in &body.invite {
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users.insert(invite_.clone(), int!(100));
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}
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}
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let mut power_levels_content = serde_json::to_value(RoomPowerLevelsEventContent {
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users,
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..Default::default()
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})
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.expect("event is valid, we just created it");
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if let Some(power_level_content_override) = &body.power_level_content_override {
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let json: JsonObject = serde_json::from_str(power_level_content_override.json().get())
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.map_err(|_| {
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Error::BadRequest(ErrorKind::BadJson, "Invalid power_level_content_override.")
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})?;
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for (key, value) in json {
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power_levels_content[key] = value;
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}
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}
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db.rooms.build_and_append_pdu(
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PduBuilder {
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event_type: EventType::RoomPowerLevels,
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content: to_raw_value(&power_levels_content)
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.expect("to_raw_value always works on serde_json::Value"),
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unsigned: None,
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state_key: Some("".to_owned()),
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redacts: None,
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},
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sender_user,
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&room_id,
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&db,
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&state_lock,
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)?;
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// 4. Canonical room alias
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if let Some(room_alias_id) = &alias {
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db.rooms.build_and_append_pdu(
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PduBuilder {
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event_type: EventType::RoomCanonicalAlias,
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content: to_raw_value(&RoomCanonicalAliasEventContent {
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alias: Some(room_alias_id.to_owned()),
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alt_aliases: vec![],
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})
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.expect("We checked that alias earlier, it must be fine"),
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unsigned: None,
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state_key: Some("".to_owned()),
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redacts: None,
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},
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sender_user,
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&room_id,
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&db,
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&state_lock,
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)?;
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}
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// 5. Events set by preset
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// 5.1 Join Rules
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db.rooms.build_and_append_pdu(
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PduBuilder {
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event_type: EventType::RoomJoinRules,
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content: to_raw_value(&RoomJoinRulesEventContent::new(match preset {
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create_room::RoomPreset::PublicChat => JoinRule::Public,
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// according to spec "invite" is the default
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_ => JoinRule::Invite,
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}))
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.expect("event is valid, we just created it"),
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unsigned: None,
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state_key: Some("".to_owned()),
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redacts: None,
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},
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sender_user,
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&room_id,
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&db,
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&state_lock,
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)?;
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// 5.2 History Visibility
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db.rooms.build_and_append_pdu(
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PduBuilder {
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event_type: EventType::RoomHistoryVisibility,
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content: to_raw_value(&RoomHistoryVisibilityEventContent::new(
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HistoryVisibility::Shared,
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))
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.expect("event is valid, we just created it"),
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unsigned: None,
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state_key: Some("".to_owned()),
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redacts: None,
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},
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sender_user,
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&room_id,
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&db,
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&state_lock,
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)?;
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// 5.3 Guest Access
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db.rooms.build_and_append_pdu(
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PduBuilder {
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event_type: EventType::RoomGuestAccess,
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content: to_raw_value(&RoomGuestAccessEventContent::new(match preset {
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create_room::RoomPreset::PublicChat => GuestAccess::Forbidden,
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_ => GuestAccess::CanJoin,
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}))
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.expect("event is valid, we just created it"),
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unsigned: None,
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state_key: Some("".to_owned()),
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redacts: None,
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},
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sender_user,
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&room_id,
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&db,
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&state_lock,
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)?;
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// 6. Events listed in initial_state
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for event in &body.initial_state {
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let pdu_builder = PduBuilder::from(event.deserialize().map_err(|e| {
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warn!("Invalid initial state event: {:?}", e);
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Error::BadRequest(ErrorKind::InvalidParam, "Invalid initial state event.")
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})?);
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// Silently skip encryption events if they are not allowed
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if pdu_builder.event_type == EventType::RoomEncryption && !db.globals.allow_encryption() {
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continue;
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}
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db.rooms
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.build_and_append_pdu(pdu_builder, sender_user, &room_id, &db, &state_lock)?;
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}
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// 7. Events implied by name and topic
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if let Some(name) = &body.name {
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db.rooms.build_and_append_pdu(
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PduBuilder {
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event_type: EventType::RoomName,
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content: to_raw_value(&RoomNameEventContent::new(Some(name.clone())))
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.expect("event is valid, we just created it"),
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unsigned: None,
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state_key: Some("".to_owned()),
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redacts: None,
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},
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sender_user,
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&room_id,
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&db,
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&state_lock,
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)?;
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}
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if let Some(topic) = &body.topic {
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db.rooms.build_and_append_pdu(
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PduBuilder {
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event_type: EventType::RoomTopic,
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content: to_raw_value(&RoomTopicEventContent {
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topic: topic.clone(),
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})
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.expect("event is valid, we just created it"),
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unsigned: None,
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state_key: Some("".to_owned()),
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redacts: None,
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},
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sender_user,
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&room_id,
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&db,
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&state_lock,
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)?;
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}
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// 8. Events implied by invite (and TODO: invite_3pid)
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drop(state_lock);
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for user_id in &body.invite {
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let _ = invite_helper(sender_user, user_id, &room_id, &db, body.is_direct).await;
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}
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// Homeserver specific stuff
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if let Some(alias) = alias {
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db.rooms.set_alias(&alias, Some(&room_id), &db.globals)?;
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}
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if body.visibility == room::Visibility::Public {
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db.rooms.set_public(&room_id, true)?;
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}
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info!("{} created a room", sender_user);
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db.flush()?;
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Ok(create_room::Response::new(room_id).into())
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}
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/// # `GET /_matrix/client/r0/rooms/{roomId}/event/{eventId}`
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///
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/// Gets a single event.
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///
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/// - You have to currently be joined to the room (TODO: Respect history visibility)
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#[cfg_attr(
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feature = "conduit_bin",
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get("/_matrix/client/r0/rooms/<_>/event/<_>", data = "<body>")
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)]
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#[tracing::instrument(skip(db, body))]
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pub async fn get_room_event_route(
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db: DatabaseGuard,
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body: Ruma<get_room_event::Request<'_>>,
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) -> ConduitResult<get_room_event::Response> {
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let sender_user = body.sender_user.as_ref().expect("user is authenticated");
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|
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if !db.rooms.is_joined(sender_user, &body.room_id)? {
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return Err(Error::BadRequest(
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ErrorKind::Forbidden,
|
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"You don't have permission to view this room.",
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));
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}
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Ok(get_room_event::Response {
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event: db
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.rooms
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.get_pdu(&body.event_id)?
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.ok_or(Error::BadRequest(ErrorKind::NotFound, "Event not found."))?
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.to_room_event(),
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}
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.into())
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}
|
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|
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/// # `GET /_matrix/client/r0/rooms/{roomId}/aliases`
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///
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/// Lists all aliases of the room.
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///
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/// - Only users joined to the room are allowed to call this TODO: Allow any user to call it if history_visibility is world readable
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#[cfg_attr(
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feature = "conduit_bin",
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get("/_matrix/client/r0/rooms/<_>/aliases", data = "<body>")
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)]
|
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#[tracing::instrument(skip(db, body))]
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pub async fn get_room_aliases_route(
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db: DatabaseGuard,
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body: Ruma<aliases::Request<'_>>,
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) -> ConduitResult<aliases::Response> {
|
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let sender_user = body.sender_user.as_ref().expect("user is authenticated");
|
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|
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if !db.rooms.is_joined(sender_user, &body.room_id)? {
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return Err(Error::BadRequest(
|
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ErrorKind::Forbidden,
|
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"You don't have permission to view this room.",
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));
|
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}
|
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|
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Ok(aliases::Response {
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aliases: db
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.rooms
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.room_aliases(&body.room_id)
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.filter_map(|a| a.ok())
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.collect(),
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}
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.into())
|
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}
|
|
|
|
/// # `POST /_matrix/client/r0/rooms/{roomId}/upgrade`
|
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///
|
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/// Upgrades the room.
|
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///
|
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/// - Creates a replacement room
|
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/// - Sends a tombstone event into the current room
|
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/// - Sender user joins the room
|
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/// - Transfers some state events
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/// - Moves local aliases
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/// - Modifies old room power levels to prevent users from speaking
|
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#[cfg_attr(
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feature = "conduit_bin",
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post("/_matrix/client/r0/rooms/<_>/upgrade", data = "<body>")
|
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)]
|
|
#[tracing::instrument(skip(db, body))]
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|
pub async fn upgrade_room_route(
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db: DatabaseGuard,
|
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body: Ruma<upgrade_room::Request<'_>>,
|
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) -> ConduitResult<upgrade_room::Response> {
|
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let sender_user = body.sender_user.as_ref().expect("user is authenticated");
|
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|
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if !matches!(body.new_version, RoomVersionId::V5 | RoomVersionId::V6) {
|
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return Err(Error::BadRequest(
|
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ErrorKind::UnsupportedRoomVersion,
|
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"This server does not support that room version.",
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));
|
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}
|
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|
|
// Create a replacement room
|
|
let replacement_room = RoomId::new(db.globals.server_name());
|
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db.rooms
|
|
.get_or_create_shortroomid(&replacement_room, &db.globals)?;
|
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|
|
let mutex_state = Arc::clone(
|
|
db.globals
|
|
.roomid_mutex_state
|
|
.write()
|
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.unwrap()
|
|
.entry(body.room_id.clone())
|
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.or_default(),
|
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);
|
|
let state_lock = mutex_state.lock().await;
|
|
|
|
// Send a m.room.tombstone event to the old room to indicate that it is not intended to be used any further
|
|
// Fail if the sender does not have the required permissions
|
|
let tombstone_event_id = db.rooms.build_and_append_pdu(
|
|
PduBuilder {
|
|
event_type: EventType::RoomTombstone,
|
|
content: to_raw_value(&RoomTombstoneEventContent {
|
|
body: "This room has been replaced".to_owned(),
|
|
replacement_room: replacement_room.clone(),
|
|
})
|
|
.expect("event is valid, we just created it"),
|
|
unsigned: None,
|
|
state_key: Some("".to_owned()),
|
|
redacts: None,
|
|
},
|
|
sender_user,
|
|
&body.room_id,
|
|
&db,
|
|
&state_lock,
|
|
)?;
|
|
|
|
// Change lock to replacement room
|
|
drop(state_lock);
|
|
let mutex_state = Arc::clone(
|
|
db.globals
|
|
.roomid_mutex_state
|
|
.write()
|
|
.unwrap()
|
|
.entry(replacement_room.clone())
|
|
.or_default(),
|
|
);
|
|
let state_lock = mutex_state.lock().await;
|
|
|
|
// Get the old room creation event
|
|
let mut create_event_content = serde_json::from_str::<CanonicalJsonObject>(
|
|
db.rooms
|
|
.room_state_get(&body.room_id, &EventType::RoomCreate, "")?
|
|
.ok_or_else(|| Error::bad_database("Found room without m.room.create event."))?
|
|
.content
|
|
.get(),
|
|
)
|
|
.map_err(|_| Error::bad_database("Invalid room event in database."))?;
|
|
|
|
// Use the m.room.tombstone event as the predecessor
|
|
let predecessor = Some(ruma::events::room::create::PreviousRoom::new(
|
|
body.room_id.clone(),
|
|
(*tombstone_event_id).to_owned(),
|
|
));
|
|
|
|
// Send a m.room.create event containing a predecessor field and the applicable room_version
|
|
create_event_content.insert(
|
|
"creator".into(),
|
|
json!(&sender_user)
|
|
.try_into()
|
|
.map_err(|_| Error::BadRequest(ErrorKind::BadJson, "Error forming creation event"))?,
|
|
);
|
|
create_event_content.insert(
|
|
"room_version".into(),
|
|
json!(&body.new_version)
|
|
.try_into()
|
|
.map_err(|_| Error::BadRequest(ErrorKind::BadJson, "Error forming creation event"))?,
|
|
);
|
|
create_event_content.insert(
|
|
"predecessor".into(),
|
|
json!(predecessor)
|
|
.try_into()
|
|
.map_err(|_| Error::BadRequest(ErrorKind::BadJson, "Error forming creation event"))?,
|
|
);
|
|
|
|
// Validate creation event content
|
|
let de_result = serde_json::from_str::<CanonicalJsonObject>(
|
|
to_raw_value(&create_event_content)
|
|
.expect("Error forming creation event")
|
|
.get(),
|
|
);
|
|
|
|
if de_result.is_err() {
|
|
return Err(Error::BadRequest(
|
|
ErrorKind::BadJson,
|
|
"Error forming creation event",
|
|
));
|
|
}
|
|
|
|
db.rooms.build_and_append_pdu(
|
|
PduBuilder {
|
|
event_type: EventType::RoomCreate,
|
|
content: to_raw_value(&create_event_content)
|
|
.expect("event is valid, we just created it"),
|
|
unsigned: None,
|
|
state_key: Some("".to_owned()),
|
|
redacts: None,
|
|
},
|
|
sender_user,
|
|
&replacement_room,
|
|
&db,
|
|
&state_lock,
|
|
)?;
|
|
|
|
// Join the new room
|
|
db.rooms.build_and_append_pdu(
|
|
PduBuilder {
|
|
event_type: EventType::RoomMember,
|
|
content: to_raw_value(&RoomMemberEventContent {
|
|
membership: MembershipState::Join,
|
|
displayname: db.users.displayname(sender_user)?,
|
|
avatar_url: db.users.avatar_url(sender_user)?,
|
|
is_direct: None,
|
|
third_party_invite: None,
|
|
blurhash: db.users.blurhash(sender_user)?,
|
|
reason: None,
|
|
join_authorized_via_users_server: None,
|
|
})
|
|
.expect("event is valid, we just created it"),
|
|
unsigned: None,
|
|
state_key: Some(sender_user.to_string()),
|
|
redacts: None,
|
|
},
|
|
sender_user,
|
|
&replacement_room,
|
|
&db,
|
|
&state_lock,
|
|
)?;
|
|
|
|
// Recommended transferable state events list from the specs
|
|
let transferable_state_events = vec![
|
|
EventType::RoomServerAcl,
|
|
EventType::RoomEncryption,
|
|
EventType::RoomName,
|
|
EventType::RoomAvatar,
|
|
EventType::RoomTopic,
|
|
EventType::RoomGuestAccess,
|
|
EventType::RoomHistoryVisibility,
|
|
EventType::RoomJoinRules,
|
|
EventType::RoomPowerLevels,
|
|
];
|
|
|
|
// Replicate transferable state events to the new room
|
|
for event_type in transferable_state_events {
|
|
let event_content = match db.rooms.room_state_get(&body.room_id, &event_type, "")? {
|
|
Some(v) => v.content.clone(),
|
|
None => continue, // Skipping missing events.
|
|
};
|
|
|
|
db.rooms.build_and_append_pdu(
|
|
PduBuilder {
|
|
event_type,
|
|
content: event_content,
|
|
unsigned: None,
|
|
state_key: Some("".to_owned()),
|
|
redacts: None,
|
|
},
|
|
sender_user,
|
|
&replacement_room,
|
|
&db,
|
|
&state_lock,
|
|
)?;
|
|
}
|
|
|
|
// Moves any local aliases to the new room
|
|
for alias in db.rooms.room_aliases(&body.room_id).filter_map(|r| r.ok()) {
|
|
db.rooms
|
|
.set_alias(&alias, Some(&replacement_room), &db.globals)?;
|
|
}
|
|
|
|
// Get the old room power levels
|
|
let mut power_levels_event_content: RoomPowerLevelsEventContent = serde_json::from_str(
|
|
db.rooms
|
|
.room_state_get(&body.room_id, &EventType::RoomPowerLevels, "")?
|
|
.ok_or_else(|| Error::bad_database("Found room without m.room.create event."))?
|
|
.content
|
|
.get(),
|
|
)
|
|
.map_err(|_| Error::bad_database("Invalid room event in database."))?;
|
|
|
|
// Setting events_default and invite to the greater of 50 and users_default + 1
|
|
let new_level = max(int!(50), power_levels_event_content.users_default + int!(1));
|
|
power_levels_event_content.events_default = new_level;
|
|
power_levels_event_content.invite = new_level;
|
|
|
|
// Modify the power levels in the old room to prevent sending of events and inviting new users
|
|
let _ = db.rooms.build_and_append_pdu(
|
|
PduBuilder {
|
|
event_type: EventType::RoomPowerLevels,
|
|
content: to_raw_value(&power_levels_event_content)
|
|
.expect("event is valid, we just created it"),
|
|
unsigned: None,
|
|
state_key: Some("".to_owned()),
|
|
redacts: None,
|
|
},
|
|
sender_user,
|
|
&body.room_id,
|
|
&db,
|
|
&state_lock,
|
|
)?;
|
|
|
|
drop(state_lock);
|
|
|
|
db.flush()?;
|
|
|
|
// Return the replacement room id
|
|
Ok(upgrade_room::Response { replacement_room }.into())
|
|
}
|