fix: media thumbnail calculation and appservice detection

src/client_server/membership.rs

@@ -4,7 +4,7 @@ use crate::{
     pdu::{PduBuilder, PduEvent},
     utils, ConduitResult, Database, Error, Result, Ruma,
 };
-use log::{info, warn};
+use log::{error, info, warn};
 use ruma::{
     api::{
         client::{
@@ -544,8 +544,10 @@ async fn join_room_by_id_helper(
             .await?;
 
         let add_event_id = |pdu: &Raw<Pdu>| -> Result<(EventId, CanonicalJsonObject)> {
-            let mut value = serde_json::from_str(pdu.json().get())
-                .expect("converting raw jsons to values always works");
+            let mut value = serde_json::from_str(pdu.json().get()).map_err(|e| {
+                error!("{:?}: {:?}", pdu, e);
+                Error::BadServerResponse("Invalid PDU in server response")
+            })?;
             let event_id = EventId::try_from(&*format!(
                 "${}",
                 ruma::signatures::reference_hash(&value, &RoomVersionId::Version6)

src/database/media.rs

@@ -226,16 +226,17 @@ impl Media {
                 }
 
                 let thumbnail = if crop {
-                    image.resize_to_fill(width, height, FilterType::Triangle)
+                    image.resize_to_fill(width, height, FilterType::CatmullRom)
                 } else {
                     let (exact_width, exact_height) = {
                         // Copied from image::dynimage::resize_dimensions
                         let ratio = u64::from(original_width) * u64::from(height);
                         let nratio = u64::from(width) * u64::from(original_height);
 
-                        let use_width = nratio > ratio;
+                        let use_width = nratio <= ratio;
                         let intermediate = if use_width {
-                            u64::from(original_height) * u64::from(width) / u64::from(width)
+                            u64::from(original_height) * u64::from(width)
+                                / u64::from(original_width)
                         } else {
                             u64::from(original_width) * u64::from(height)
                                 / u64::from(original_height)
@@ -261,7 +262,7 @@ impl Media {
                         }
                     };
 
-                    image.thumbnail_exact(exact_width, exact_height)
+                    image.thumbnail_exact(dbg!(exact_width), dbg!(exact_height))
                 };
 
                 let mut thumbnail_bytes = Vec::new();

src/database/rooms.rs

@@ -1193,6 +1193,9 @@ impl Rooms {
                                 .state_key
                                 .as_ref()
                                 .map_or(false, |state_key| users.is_match(&state_key))
+                        || db.rooms.room_members(&room_id).any(|userid| {
+                            userid.map_or(false, |userid| users.is_match(userid.as_str()))
+                        })
                 };
                 let matching_aliases = |aliases: &Regex| {
                     self.room_aliases(&room_id)
@@ -1201,9 +1204,9 @@ impl Rooms {
                 };
 
                 if bridge_user_id.map_or(false, user_is_joined)
-                    || users.iter().any(matching_users)
                     || aliases.iter().any(matching_aliases)
                     || rooms.map_or(false, |rooms| rooms.contains(&room_id.as_str().into()))
+                    || users.iter().any(matching_users)
                 {
                     db.sending.send_pdu_appservice(&appservice.0, &pdu_id)?;
                 }

src/pdu.rs

@@ -1,4 +1,5 @@
 use crate::Error;
+use log::error;
 use ruma::{
     events::{
         pdu::EventHash, room::member::MemberEventContent, AnyEvent, AnyRoomEvent, AnyStateEvent,
@@ -322,8 +323,11 @@ impl Ord for PduEvent {
 /// Returns a tuple of the new `EventId` and the PDU as a `BTreeMap<String, CanonicalJsonValue>`.
 pub(crate) fn gen_event_id_canonical_json(
     pdu: &Raw<ruma::events::pdu::Pdu>,
-) -> (EventId, CanonicalJsonObject) {
-    let value = serde_json::from_str(pdu.json().get()).expect("A Raw<...> is always valid JSON");
+) -> crate::Result<(EventId, CanonicalJsonObject)> {
+    let value = serde_json::from_str(pdu.json().get()).map_err(|e| {
+        error!("{:?}: {:?}", pdu, e);
+        Error::BadServerResponse("Invalid PDU in server response")
+    })?;
 
     let event_id = EventId::try_from(&*format!(
         "${}",
@@ -332,7 +336,7 @@ pub(crate) fn gen_event_id_canonical_json(
     ))
     .expect("ruma's reference hashes are valid event ids");
 
-    (event_id, value)
+    Ok((event_id, value))
 }
 
 /// Build the start of a PDU in order to add it to the `Database`.

src/server_server.rs

@@ -556,7 +556,13 @@ pub async fn send_transaction_message_route<'a>(
             // 1. Is a valid event, otherwise it is dropped.
             // Ruma/PduEvent/StateEvent satisfies this
             // We do not add the event_id field to the pdu here because of signature and hashes checks
-            let (event_id, value) = crate::pdu::gen_event_id_canonical_json(pdu);
+            let (event_id, value) = match crate::pdu::gen_event_id_canonical_json(pdu) {
+                Ok(t) => t,
+                Err(_) => {
+                    // Event could not be converted to canonical json
+                    return None;
+                }
+            };
 
             // If we have no idea about this room skip the PDU
             let room_id = match value
@@ -1138,7 +1144,7 @@ pub(crate) async fn fetch_events(
                         Ok(res) => {
                             debug!("Got event over federation: {:?}", res);
                             let (event_id, value) =
-                                crate::pdu::gen_event_id_canonical_json(&res.pdu);
+                                crate::pdu::gen_event_id_canonical_json(&res.pdu)?;
                             let (pdu, _) =
                                 validate_event(db, value, event_id, key_map, origin, auth_cache)
                                     .await