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Persist the parent room_id/servers in edge metadata

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Other events cannot assert the true room_id/servers for the
parent event, only make claims to them, hence why this is
edge metadata.
This commit is contained in:
Kegan Dougal 2020-11-18 10:22:12 +00:00
parent f33e2258f6
commit b52a383250
2 changed files with 33 additions and 8 deletions
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10
internal/mscs/msc2836/msc2836.go
View file

@ -188,7 +188,7 @@ func eventRelationshipHandler(db Database, rsAPI roomserver.RoomserverInternalAP
}
// Can the user see (according to history visibility) event_id? If no, reject the request, else continue.
event := rc.getEventIfVisible(relation.EventID)
event := rc.getEventIfVisible(relation.EventID, nil)
if event == nil {
return util.JSONResponse{
Code: 403,
@ -249,7 +249,7 @@ func (rc *reqCtx) includeParent(event *gomatrixserverlib.HeaderedEvent) (parent
if parentID == "" {
return nil
}
return rc.getEventIfVisible(parentID)
return rc.getEventIfVisible(parentID, event)
}
// If include_children: true, lookup all events which have event_id as an m.relationship
@ -264,7 +264,7 @@ func (rc *reqCtx) includeChildren(db Database, parentID string, limit int, recen
}
var childEvents []*gomatrixserverlib.HeaderedEvent
for _, child := range children {
childEvent := rc.getEventIfVisible(child.EventID)
childEvent := rc.getEventIfVisible(child.EventID, nil)
if childEvent != nil {
childEvents = append(childEvents, childEvent)
}
@ -302,7 +302,7 @@ func walkThread(
}
// Process the event.
event := rc.getEventIfVisible(wi.EventID)
event := rc.getEventIfVisible(wi.EventID, nil)
if event != nil {
result = append(result, event)
}
@ -317,7 +317,7 @@ func walkThread(
return result, limited
}
func (rc *reqCtx) getEventIfVisible(eventID string) *gomatrixserverlib.HeaderedEvent {
func (rc *reqCtx) getEventIfVisible(eventID string, child *gomatrixserverlib.HeaderedEvent) *gomatrixserverlib.HeaderedEvent {
event, joinedToRoom := getEventIfVisible(rc.ctx, rc.rsAPI, eventID, rc.userID)
if event == nil {
return nil

31
internal/mscs/msc2836/storage.go
View file

@ -14,6 +14,7 @@ type eventInfo struct {
EventID string
OriginServerTS gomatrixserverlib.Timestamp
RoomID string
Servers []string
}
type Database interface {
@ -56,6 +57,8 @@ func newPostgresDatabase(dbOpts *config.DatabaseOptions) (Database, error) {
parent_event_id TEXT NOT NULL,
child_event_id TEXT NOT NULL,
rel_type TEXT NOT NULL,
parent_room_id TEXT NOT NULL,
parent_servers TEXT NOT NULL,
CONSTRAINT msc2836_edges_uniq UNIQUE (parent_event_id, child_event_id, rel_type)
);
@ -69,7 +72,7 @@ func newPostgresDatabase(dbOpts *config.DatabaseOptions) (Database, error) {
return nil, err
}
if d.insertEdgeStmt, err = d.db.Prepare(`
INSERT INTO msc2836_edges(parent_event_id, child_event_id, rel_type) VALUES($1, $2, $3) ON CONFLICT DO NOTHING
INSERT INTO msc2836_edges(parent_event_id, child_event_id, rel_type, parent_room_id, parent_servers) VALUES($1, $2, $3, $4, $5) ON CONFLICT DO NOTHING
`); err != nil {
return nil, err
}
@ -106,6 +109,8 @@ func newSQLiteDatabase(dbOpts *config.DatabaseOptions) (Database, error) {
parent_event_id TEXT NOT NULL,
child_event_id TEXT NOT NULL,
rel_type TEXT NOT NULL,
parent_room_id TEXT NOT NULL,
parent_servers TEXT NOT NULL,
UNIQUE (parent_event_id, child_event_id, rel_type)
);
@ -119,7 +124,7 @@ func newSQLiteDatabase(dbOpts *config.DatabaseOptions) (Database, error) {
return nil, err
}
if d.insertEdgeStmt, err = d.db.Prepare(`
INSERT INTO msc2836_edges(parent_event_id, child_event_id, rel_type) VALUES($1, $2, $3) ON CONFLICT (parent_event_id, child_event_id, rel_type) DO NOTHING
INSERT INTO msc2836_edges(parent_event_id, child_event_id, rel_type, parent_room_id, parent_servers) VALUES($1, $2, $3, $4, $5) ON CONFLICT (parent_event_id, child_event_id, rel_type) DO NOTHING
`); err != nil {
return nil, err
}
@ -148,8 +153,13 @@ func (p *DB) StoreRelation(ctx context.Context, ev *gomatrixserverlib.HeaderedEv
if parent == "" || child == "" {
return nil
}
relationRoomID, relationServers := roomIDAndServers(ev)
relationServersJSON, err := json.Marshal(relationServers)
if err != nil {
return err
}
return p.writer.Do(p.db, nil, func(txn *sql.Tx) error {
_, err := txn.Stmt(p.insertEdgeStmt).ExecContext(ctx, parent, child, relType)
_, err := txn.Stmt(p.insertEdgeStmt).ExecContext(ctx, parent, child, relType, relationRoomID, string(relationServersJSON))
if err != nil {
return err
}
@ -199,3 +209,18 @@ func parentChildEventIDs(ev *gomatrixserverlib.HeaderedEvent) (parent, child, re
}
return body.Relationship.EventID, ev.EventID(), body.Relationship.RelType
}
func roomIDAndServers(ev *gomatrixserverlib.HeaderedEvent) (roomID string, servers []string) {
servers = []string{}
if ev == nil {
return
}
body := struct {
RoomID string `json:"relationship_room_id"`
Servers []string `json:"relationship_servers"`
}{}
if err := json.Unmarshal(ev.Unsigned(), &body); err != nil {
return
}
return body.RoomID, body.Servers
}