fix(redaction): use content.redacts when checking v11 events
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89c1c2109c
commit
1c4ae8d268
2 changed files with 102 additions and 26 deletions
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@ -23,7 +23,10 @@ use ruma::{
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},
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},
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events::{
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room::{create::RoomCreateEventContent, server_acl::RoomServerAclEventContent},
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room::{
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create::RoomCreateEventContent, redaction::RoomRedactionEventContent,
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server_acl::RoomServerAclEventContent,
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},
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StateEventType, TimelineEventType,
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},
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int,
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@ -797,17 +800,50 @@ impl Service {
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|k, s| auth_events.get(&(k.clone(), s.to_owned())),
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)
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.map_err(|_e| Error::BadRequest(ErrorKind::InvalidParam, "Auth check failed."))?
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|| if let Some(redact_id) = &incoming_pdu.redacts {
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incoming_pdu.kind == TimelineEventType::RoomRedaction
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&& !services().rooms.state_accessor.user_can_redact(
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redact_id,
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&incoming_pdu.sender,
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&incoming_pdu.room_id,
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true,
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)?
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} else {
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false
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};
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|| incoming_pdu.kind == TimelineEventType::RoomRedaction
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&& match room_version_id {
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RoomVersionId::V1
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| RoomVersionId::V2
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| RoomVersionId::V3
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| RoomVersionId::V4
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| RoomVersionId::V5
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| RoomVersionId::V6
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| RoomVersionId::V7
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| RoomVersionId::V8
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| RoomVersionId::V9
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| RoomVersionId::V10 => {
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if let Some(redact_id) = &incoming_pdu.redacts {
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!services().rooms.state_accessor.user_can_redact(
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redact_id,
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&incoming_pdu.sender,
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&incoming_pdu.room_id,
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true,
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)?
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} else {
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false
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}
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}
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RoomVersionId::V11 => {
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let content = serde_json::from_str::<RoomRedactionEventContent>(
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incoming_pdu.content.get(),
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)
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.map_err(|_| Error::bad_database("Invalid content in redaction pdu."))?;
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if let Some(redact_id) = &content.redacts {
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!services().rooms.state_accessor.user_can_redact(
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redact_id,
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&incoming_pdu.sender,
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&incoming_pdu.room_id,
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true,
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)?
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} else {
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false
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}
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}
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_ => {
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unreachable!("Validity of room version already checked")
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}
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};
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// 13. Use state resolution to find new room state
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@ -900,21 +900,61 @@ impl Service {
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}
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// If redaction event is not authorized, do not append it to the timeline
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if let Some(redact_id) = &pdu.redacts {
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if pdu.kind == TimelineEventType::RoomRedaction
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&& !services().rooms.state_accessor.user_can_redact(
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redact_id,
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&pdu.sender,
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&pdu.room_id,
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false,
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)?
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{
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return Err(Error::BadRequest(
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ErrorKind::Forbidden,
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"User cannot redact this event.",
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));
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if pdu.kind == TimelineEventType::RoomRedaction {
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match services().rooms.state.get_room_version(&pdu.room_id)? {
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RoomVersionId::V1
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| RoomVersionId::V2
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| RoomVersionId::V3
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| RoomVersionId::V4
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| RoomVersionId::V5
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| RoomVersionId::V6
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| RoomVersionId::V7
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| RoomVersionId::V8
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| RoomVersionId::V9
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| RoomVersionId::V10 => {
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if let Some(redact_id) = &pdu.redacts {
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if !services().rooms.state_accessor.user_can_redact(
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redact_id,
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&pdu.sender,
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&pdu.room_id,
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false,
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)? {
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return Err(Error::BadRequest(
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ErrorKind::Forbidden,
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"User cannot redact this event.",
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));
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}
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};
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}
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RoomVersionId::V11 => {
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let content =
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serde_json::from_str::<RoomRedactionEventContent>(pdu.content.get())
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.map_err(|_| {
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Error::bad_database("Invalid content in redaction pdu.")
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})?;
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if let Some(redact_id) = &content.redacts {
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if !services().rooms.state_accessor.user_can_redact(
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redact_id,
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&pdu.sender,
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&pdu.room_id,
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false,
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)? {
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return Err(Error::BadRequest(
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ErrorKind::Forbidden,
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"User cannot redact this event.",
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));
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}
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}
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}
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_ => {
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return Err(Error::BadRequest(
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ErrorKind::UnsupportedRoomVersion,
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"Unsupported room version",
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));
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}
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}
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};
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}
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// We append to state before appending the pdu, so we don't have a moment in time with the
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// pdu without it's state. This is okay because append_pdu can't fail.
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