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51 lines
1.6 KiB
Go
51 lines
1.6 KiB
Go
package caching
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import (
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"fmt"
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"time"
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"github.com/matrix-org/gomatrixserverlib"
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)
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const (
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ServerKeyCacheName = "server_key"
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ServerKeyCacheMaxEntries = 4096
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ServerKeyCacheMutable = true
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)
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// ServerKeyCache contains the subset of functions needed for
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// a server key cache.
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type ServerKeyCache interface {
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GetServerKey(request gomatrixserverlib.PublicKeyLookupRequest) (response gomatrixserverlib.PublicKeyLookupResult, ok bool)
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StoreServerKey(request gomatrixserverlib.PublicKeyLookupRequest, response gomatrixserverlib.PublicKeyLookupResult)
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}
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func (c Caches) GetServerKey(
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request gomatrixserverlib.PublicKeyLookupRequest,
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) (gomatrixserverlib.PublicKeyLookupResult, bool) {
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key := fmt.Sprintf("%s/%s", request.ServerName, request.KeyID)
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now := gomatrixserverlib.AsTimestamp(time.Now())
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val, found := c.ServerKeys.Get(key)
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if found && val != nil {
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if keyLookupResult, ok := val.(gomatrixserverlib.PublicKeyLookupResult); ok {
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if !keyLookupResult.WasValidAt(now, true) {
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// We appear to be past the key validity so don't return this
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// with the results. This ensures that the cache doesn't return
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// values that are not useful to us.
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c.ServerKeys.Unset(key)
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return gomatrixserverlib.PublicKeyLookupResult{}, false
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}
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return keyLookupResult, true
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}
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}
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return gomatrixserverlib.PublicKeyLookupResult{}, false
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}
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func (c Caches) StoreServerKey(
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request gomatrixserverlib.PublicKeyLookupRequest,
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response gomatrixserverlib.PublicKeyLookupResult,
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) {
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key := fmt.Sprintf("%s/%s", request.ServerName, request.KeyID)
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c.ServerKeys.Set(key, response)
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}
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