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Protect txnReq.newEvents with mutex (#1587)
* Protect txnReq.newEvents and txnReq.haveEvents with mutex * Missing defer * Remove t.haveEventsMutex
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@ -112,6 +112,7 @@ type txnReq struct {
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haveEvents map[string]*gomatrixserverlib.HeaderedEvent
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// new events which the roomserver does not know about
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newEvents map[string]bool
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newEventsMutex sync.RWMutex
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}
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// A subset of FederationClient functionality that txn requires. Useful for testing.
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@ -264,6 +265,8 @@ func (e missingPrevEventsError) Error() string {
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}
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func (t *txnReq) haveEventIDs() map[string]bool {
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t.newEventsMutex.RLock()
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defer t.newEventsMutex.RUnlock()
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result := make(map[string]bool, len(t.haveEvents))
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for eventID := range t.haveEvents {
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if t.newEvents[eventID] {
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@ -1144,6 +1147,8 @@ func (t *txnReq) lookupEvent(ctx context.Context, roomVersion gomatrixserverlib.
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return nil, verifySigError{event.EventID(), err}
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}
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h := event.Headered(roomVersion)
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t.newEventsMutex.Lock()
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t.newEvents[h.EventID()] = true
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t.newEventsMutex.Unlock()
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return h, nil
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}
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