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events: Don't fail event content parsing on invalid relation

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Jonas Platte 2023-11-16 13:33:48 +01:00
parent 6602782a15
commit 740f357e97
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9 changed files with 103 additions and 112 deletions
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10
crates/ruma-events/CHANGELOG.md
View File

@ -1,5 +1,15 @@
# [unreleased]
Breaking changes:
- Remove `event_id` methods from relation types
Improvements:
- Don't fail event content parsing on invalid relation
- We previously already accepted custom or slightly malformed relations
- Now, even invalid / missing `rel_type` and `event_id` are accepted
# 0.27.9
Bug fixes:

15
crates/ruma-events/src/relation.rs
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@ -316,14 +316,11 @@ pub enum RelationType {
/// The payload for a custom relation.
#[doc(hidden)]
#[derive(Clone, Debug, Deserialize, Serialize)]
pub struct CustomRelation {
/// A custom relation type.
pub(super) rel_type: String,
#[serde(transparent)]
pub struct CustomRelation(pub(super) JsonObject);
/// The ID of the event this relation applies to.
pub(super) event_id: OwnedEventId,
/// Remaining event content.
#[serde(flatten)]
pub(super) data: JsonObject,
impl CustomRelation {
pub(super) fn rel_type(&self) -> Option<RelationType> {
Some(self.0.get("rel_type")?.as_str()?.into())
}
}

29
crates/ruma-events/src/room/encrypted.rs
View File

@ -5,7 +5,7 @@
use std::{borrow::Cow, collections::BTreeMap};
use js_int::UInt;
use ruma_common::{serde::JsonObject, EventId, OwnedDeviceId, OwnedEventId};
use ruma_common::{serde::JsonObject, OwnedDeviceId, OwnedEventId};
use ruma_macros::EventContent;
use serde::{Deserialize, Serialize};
@ -118,36 +118,21 @@ impl Relation {
Relation::Reference(_) => Some(RelationType::Reference),
Relation::Annotation(_) => Some(RelationType::Annotation),
Relation::Thread(_) => Some(RelationType::Thread),
Relation::_Custom(c) => Some(c.rel_type.as_str().into()),
}
}
/// The ID of the event this relates to.
///
/// This is the `event_id` field at the root of an `m.relates_to` object, except in the case of
/// a reply relation where it's the `event_id` field in the `m.in_reply_to` object.
pub fn event_id(&self) -> &EventId {
match self {
Relation::Reply { in_reply_to } => &in_reply_to.event_id,
Relation::Replacement(r) => &r.event_id,
Relation::Reference(r) => &r.event_id,
Relation::Annotation(a) => &a.event_id,
Relation::Thread(t) => &t.event_id,
Relation::_Custom(c) => &c.event_id,
Relation::_Custom(c) => c.rel_type(),
}
}
/// The associated data.
///
/// The returned JSON object won't contain the `rel_type` field, use
/// [`.rel_type()`][Self::rel_type] to access it. It also won't contain data
/// outside of `m.relates_to` (e.g. `m.new_content` for `m.replace` relations).
/// The returned JSON object holds the contents of `m.relates_to`, including `rel_type` and
/// `event_id` if present, but not things like `m.new_content` for `m.replace` relations that
/// live next to `m.relates_to`.
///
/// Prefer to use the public variants of `Relation` where possible; this method is meant to
/// be used for custom relations only.
pub fn data(&self) -> Cow<'_, JsonObject> {
if let Relation::_Custom(c) = self {
Cow::Borrowed(&c.data)
if let Relation::_Custom(CustomRelation(data)) = self {
Cow::Borrowed(data)
} else {
Cow::Owned(self.serialize_data())
}

3
crates/ruma-events/src/room/encrypted/relation_serde.rs
View File

@ -2,7 +2,7 @@ use ruma_common::{
serde::{from_raw_json_value, JsonObject},
OwnedEventId,
};
use serde::{de, ser::SerializeStruct, Deserialize, Deserializer, Serialize};
use serde::{ser::SerializeStruct, Deserialize, Deserializer, Serialize};
use serde_json::{value::RawValue as RawJsonValue, Value as JsonValue};
use super::{InReplyTo, Relation, Thread};
@ -17,7 +17,6 @@ impl<'de> Deserialize<'de> for Relation {
let RelationDeHelper { in_reply_to, rel_type } = from_raw_json_value(&json)?;
let rel = match (in_reply_to, rel_type.as_deref()) {
(None, None) => return Err(de::Error::missing_field("m.in_reply_to or rel_type")),
(_, Some("m.thread")) => Relation::Thread(from_raw_json_value(&json)?),
(in_reply_to, Some("io.element.thread")) => {
let ThreadUnstableDeHelper { event_id, is_falling_back } =

50
crates/ruma-events/src/room/message/relation.rs
View File

@ -1,6 +1,6 @@
use std::borrow::Cow;
use ruma_common::{serde::JsonObject, EventId};
use ruma_common::serde::JsonObject;
use crate::relation::{CustomRelation, InReplyTo, RelationType, Replacement, Thread};
@ -34,28 +34,15 @@ impl<C> Relation<C> {
Relation::Reply { .. } => None,
Relation::Replacement(_) => Some(RelationType::Replacement),
Relation::Thread(_) => Some(RelationType::Thread),
Relation::_Custom(c) => Some(c.rel_type.as_str().into()),
}
}
/// The ID of the event this relates to.
///
/// This is the `event_id` field at the root of an `m.relates_to` object, except in the case of
/// a reply relation where it's the `event_id` field in the `m.in_reply_to` object.
pub fn event_id(&self) -> &EventId {
match self {
Relation::Reply { in_reply_to } => &in_reply_to.event_id,
Relation::Replacement(r) => &r.event_id,
Relation::Thread(t) => &t.event_id,
Relation::_Custom(c) => &c.event_id,
Relation::_Custom(c) => c.rel_type(),
}
}
/// The associated data.
///
/// The returned JSON object won't contain the `rel_type` field, use
/// [`.rel_type()`][Self::rel_type] to access it. It also won't contain data
/// outside of `m.relates_to` (e.g. `m.new_content` for `m.replace` relations).
/// The returned JSON object holds the contents of `m.relates_to`, including `rel_type` and
/// `event_id` if present, but not things like `m.new_content` for `m.replace` relations that
/// live next to `m.relates_to`.
///
/// Prefer to use the public variants of `Relation` where possible; this method is meant to
/// be used for custom relations only.
@ -63,8 +50,8 @@ impl<C> Relation<C> {
where
C: Clone,
{
if let Relation::_Custom(c) = self {
Cow::Borrowed(&c.data)
if let Relation::_Custom(CustomRelation(data)) = self {
Cow::Borrowed(data)
} else {
Cow::Owned(self.serialize_data())
}
@ -97,32 +84,21 @@ impl RelationWithoutReplacement {
match self {
Self::Reply { .. } => None,
Self::Thread(_) => Some(RelationType::Thread),
Self::_Custom(c) => Some(c.rel_type.as_str().into()),
}
}
/// The ID of the event this relates to.
///
/// This is the `event_id` field at the root of an `m.relates_to` object, except in the case of
/// a reply relation where it's the `event_id` field in the `m.in_reply_to` object.
pub fn event_id(&self) -> &EventId {
match self {
Self::Reply { in_reply_to } => &in_reply_to.event_id,
Self::Thread(t) => &t.event_id,
Self::_Custom(c) => &c.event_id,
Self::_Custom(c) => c.rel_type(),
}
}
/// The associated data.
///
/// The returned JSON object won't contain the `rel_type` field, use
/// [`.rel_type()`][Self::rel_type] to access it.
/// The returned JSON object holds the contents of `m.relates_to`, including `rel_type` and
/// `event_id` if present, but not things like `m.new_content` for `m.replace` relations that
/// live next to `m.relates_to`.
///
/// Prefer to use the public variants of `Relation` where possible; this method is meant to
/// be used for custom relations only.
pub fn data(&self) -> Cow<'_, JsonObject> {
if let Self::_Custom(c) = self {
Cow::Borrowed(&c.data)
if let Self::_Custom(CustomRelation(data)) = self {
Cow::Borrowed(data)
} else {
Cow::Owned(self.serialize_data())
}

30
crates/ruma-events/src/room/message/relation_serde.rs
View File

@ -35,8 +35,8 @@ where
let RelatesToDeHelper { in_reply_to, relation } = relates_to;
let rel = if let Some(RelationDeHelper::Known(relation)) = relation {
match relation {
let rel = match relation {
RelationDeHelper::Known(relation) => match relation {
KnownRelationDeHelper::Replacement(ReplacementJsonRepr { event_id }) => {
match new_content {
Some(new_content) => {
@ -50,13 +50,14 @@ where
event_id,
is_falling_back,
}) => Relation::Thread(Thread { event_id, in_reply_to, is_falling_back }),
}
} else if let Some(in_reply_to) = in_reply_to {
},
RelationDeHelper::Unknown(c) => {
if let Some(in_reply_to) = in_reply_to {
Relation::Reply { in_reply_to }
} else if let Some(RelationDeHelper::Unknown(c)) = relation {
Relation::_Custom(c)
} else {
return Err(de::Error::missing_field("m.in_reply_to or rel_type"));
Relation::_Custom(c)
}
}
};
Ok(Some(rel))
@ -91,7 +92,7 @@ pub(crate) struct RelatesToDeHelper {
in_reply_to: Option<InReplyTo>,
#[serde(flatten)]
relation: Option<RelationDeHelper>,
relation: RelationDeHelper,
}
#[derive(Deserialize)]
@ -200,26 +201,19 @@ pub(super) struct CustomSerHelper {
#[serde(rename = "m.in_reply_to", skip_serializing_if = "Option::is_none")]
in_reply_to: Option<InReplyTo>,
#[serde(skip_serializing_if = "Option::is_none")]
rel_type: Option<String>,
#[serde(skip_serializing_if = "Option::is_none")]
event_id: Option<OwnedEventId>,
#[serde(flatten, skip_serializing_if = "JsonObject::is_empty")]
data: JsonObject,
}
impl From<InReplyTo> for CustomSerHelper {
fn from(value: InReplyTo) -> Self {
Self { in_reply_to: Some(value), ..Default::default() }
Self { in_reply_to: Some(value), data: JsonObject::new() }
}
}
impl From<CustomRelation> for CustomSerHelper {
fn from(value: CustomRelation) -> Self {
let CustomRelation { rel_type, event_id, data } = value;
Self { rel_type: Some(rel_type), event_id: Some(event_id), data, ..Default::default() }
fn from(CustomRelation(data): CustomRelation) -> Self {
Self { in_reply_to: None, data }
}
}

23
crates/ruma-events/tests/it/encrypted.rs
View File

@ -7,7 +7,9 @@ use ruma_events::{
RoomEncryptedEventContent,
},
};
use serde_json::{from_value as from_json_value, json, to_value as to_json_value};
use serde_json::{
from_value as from_json_value, json, to_value as to_json_value, Value as JsonValue,
};
fn encrypted_scheme() -> EncryptedEventScheme {
EncryptedEventScheme::MegolmV1AesSha2(
@ -429,7 +431,12 @@ fn content_annotation_deserialization() {
#[test]
fn custom_relation_deserialization() {
let json = json!({
let relation_json = json!({
"rel_type": "io.ruma.custom",
"event_id": "$related_event",
"field": "value",
});
let content_json = json!({
"algorithm": "m.megolm.v1.aes-sha2",
"sender_key": "aV9BpqYFqJpKYmgERyGv/6QyKMcgLqxM05V0gvzg9Yk",
"ciphertext": "AwgAEpABjy6BHczo7UZE3alyej6y2YQ5v+L9eB+fBqL7yteCPv8Jig\
@ -440,14 +447,10 @@ fn custom_relation_deserialization() {
lDl5mzVO3tPnJMKZ0hn+AF",
"session_id": "IkwqWxT2zy3DI1E/zM2Wq+CE8tr3eEpsxsVGjGrMPdw",
"device_id": "DEVICE",
"m.relates_to": {
"rel_type": "io.ruma.custom",
"event_id": "$related_event",
"field": "value",
},
"m.relates_to": relation_json,
});
let content = from_json_value::<RoomEncryptedEventContent>(json).unwrap();
let content = from_json_value::<RoomEncryptedEventContent>(content_json).unwrap();
assert_matches!(content.scheme, EncryptedEventScheme::MegolmV1AesSha2(encrypted_content));
assert_eq!(encrypted_content.session_id, "IkwqWxT2zy3DI1E/zM2Wq+CE8tr3eEpsxsVGjGrMPdw");
@ -463,9 +466,7 @@ fn custom_relation_deserialization() {
let relation = content.relates_to.unwrap();
assert_eq!(relation.rel_type().unwrap().as_str(), "io.ruma.custom");
assert_eq!(relation.event_id(), "$related_event");
let data = relation.data();
assert_eq!(data.get("field").unwrap().as_str(), Some("value"));
assert_eq!(JsonValue::Object(relation.data().into_owned()), relation_json);
}
#[test]

21
crates/ruma-events/tests/it/relations.rs
View File

@ -5,7 +5,9 @@ use ruma_events::{
relation::{CustomRelation, InReplyTo, Replacement, Thread},
room::message::{MessageType, Relation, RoomMessageEventContent},
};
use serde_json::{from_value as from_json_value, json, to_value as to_json_value};
use serde_json::{
from_value as from_json_value, json, to_value as to_json_value, Value as JsonValue,
};
#[test]
fn reply_deserialize() {
@ -250,18 +252,19 @@ fn thread_unstable_deserialize() {
#[test]
fn custom_deserialize() {
let json = json!({
"msgtype": "m.text",
"body": "<text msg>",
"m.relates_to": {
let relation_json = json!({
"rel_type": "io.ruma.unknown",
"event_id": "$related_event",
"key": "value",
},
});
let content_json = json!({
"msgtype": "m.text",
"body": "<text msg>",
"m.relates_to": relation_json,
});
assert_matches!(
from_json_value::<RoomMessageEventContent>(json),
from_json_value::<RoomMessageEventContent>(content_json),
Ok(RoomMessageEventContent {
msgtype: MessageType::Text(_),
relates_to: Some(relation),
@ -269,9 +272,7 @@ fn custom_deserialize() {
})
);
assert_eq!(relation.rel_type().unwrap().as_str(), "io.ruma.unknown");
assert_eq!(relation.event_id().as_str(), "$related_event");
let data = relation.data();
assert_eq!(data.get("key").unwrap().as_str(), Some("value"));
assert_eq!(JsonValue::Object(relation.data().into_owned()), relation_json);
}
#[test]

30
crates/ruma-events/tests/it/room_message.rs
View File

@ -21,7 +21,9 @@ use ruma_events::{
},
AnySyncTimelineEvent, Mentions, MessageLikeUnsigned,
};
use serde_json::{from_value as from_json_value, json, to_value as to_json_value};
use serde_json::{
from_value as from_json_value, json, to_value as to_json_value, Value as JsonValue,
};
macro_rules! json_object {
( $($tt:tt)+ ) => {
@ -1230,3 +1232,29 @@ fn mentions_room_deserialization() {
let mentions = content.mentions.unwrap();
assert!(mentions.room);
}
#[test]
fn invalid_replacement() {
// As generated by Element Web: https://github.com/vector-im/element-web/issues/26554
let relation = json!({
"rel_type": "m.replace",
"event_id": "~!kCCQTCfnABLKGGvQjo:matrix.org:m1699715385559.77",
});
let json_data = json!({
"msgtype": "m.text",
"body": " * edited text",
"m.new_content": {
"msgtype": "m.text",
"body": "edited text",
"m.mentions": {},
},
"m.mentions": {},
"m.relates_to": relation
});
let content = from_json_value::<RoomMessageEventContent>(json_data).unwrap();
let relates_to = content.relates_to.unwrap();
let data = relates_to.data();
assert_matches!(&data, Cow::Borrowed(_)); // data is stored in JSON form because it's invalid
assert_eq!(JsonValue::Object(data.into_owned()), relation);
}