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