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bugfix: E2EE device keys could sometimes not be sent to remote servers (#2466)

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* Fix flakey sytest 'Local device key changes get to remote servers'

* Debug logs

* Remove internal/test and use /test only

Remove a lot of ancient code too.

* Use FederationRoomserverAPI in more places

* Use more interfaces in federationapi; begin adding regression test

* Linting

* Add regression test

* Unbreak tests

* ALL THE LOGS

* Fix a race condition which could cause events to not be sent to servers

If a new room event which rewrites state arrives, we remove all joined hosts
then re-calculate them. This wasn't done in a transaction so for a brief period
we would have no joined hosts. During this interim, key change events which arrive
would not be sent to destination servers. This would sporadically fail on sytest.

* Unbreak new tests

* Linting
This commit is contained in:
kegsay 2022-05-17 13:23:35 +01:00 • committed by GitHub
parent cd82460513
commit 6de29c1cd2
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48 changed files with 566 additions and 618 deletions
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40
federationapi/api/api.go
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@ -12,12 +12,16 @@ import (
// FederationInternalAPI is used to query information from the federation sender.
type FederationInternalAPI interface {
FederationClient
gomatrixserverlib.FederatedStateClient
KeyserverFederationAPI
gomatrixserverlib.KeyDatabase
ClientFederationAPI
RoomserverFederationAPI
QueryServerKeys(ctx context.Context, request *QueryServerKeysRequest, response *QueryServerKeysResponse) error
LookupServerKeys(ctx context.Context, s gomatrixserverlib.ServerName, keyRequests map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.Timestamp) ([]gomatrixserverlib.ServerKeys, error)
MSC2836EventRelationships(ctx context.Context, dst gomatrixserverlib.ServerName, r gomatrixserverlib.MSC2836EventRelationshipsRequest, roomVersion gomatrixserverlib.RoomVersion) (res gomatrixserverlib.MSC2836EventRelationshipsResponse, err error)
MSC2946Spaces(ctx context.Context, dst gomatrixserverlib.ServerName, roomID string, suggestedOnly bool) (res gomatrixserverlib.MSC2946SpacesResponse, err error)
// Broadcasts an EDU to all servers in rooms we are joined to. Used in the yggdrasil demos.
PerformBroadcastEDU(
@ -60,17 +64,43 @@ type RoomserverFederationAPI interface {
LookupMissingEvents(ctx context.Context, s gomatrixserverlib.ServerName, roomID string, missing gomatrixserverlib.MissingEvents, roomVersion gomatrixserverlib.RoomVersion) (res gomatrixserverlib.RespMissingEvents, err error)
}
// FederationClient is a subset of gomatrixserverlib.FederationClient functions which the fedsender
// KeyserverFederationAPI is a subset of gomatrixserverlib.FederationClient functions which the keyserver
// implements as proxy calls, with built-in backoff/retries/etc. Errors returned from functions in
// this interface are of type FederationClientError
type FederationClient interface {
gomatrixserverlib.FederatedStateClient
type KeyserverFederationAPI interface {
GetUserDevices(ctx context.Context, s gomatrixserverlib.ServerName, userID string) (res gomatrixserverlib.RespUserDevices, err error)
ClaimKeys(ctx context.Context, s gomatrixserverlib.ServerName, oneTimeKeys map[string]map[string]string) (res gomatrixserverlib.RespClaimKeys, err error)
QueryKeys(ctx context.Context, s gomatrixserverlib.ServerName, keys map[string][]string) (res gomatrixserverlib.RespQueryKeys, err error)
}
// an interface for gmsl.FederationClient - contains functions called by federationapi only.
type FederationClient interface {
gomatrixserverlib.KeyClient
SendTransaction(ctx context.Context, t gomatrixserverlib.Transaction) (res gomatrixserverlib.RespSend, err error)
// Perform operations
LookupRoomAlias(ctx context.Context, s gomatrixserverlib.ServerName, roomAlias string) (res gomatrixserverlib.RespDirectory, err error)
Peek(ctx context.Context, s gomatrixserverlib.ServerName, roomID, peekID string, roomVersions []gomatrixserverlib.RoomVersion) (res gomatrixserverlib.RespPeek, err error)
MakeJoin(ctx context.Context, s gomatrixserverlib.ServerName, roomID, userID string, roomVersions []gomatrixserverlib.RoomVersion) (res gomatrixserverlib.RespMakeJoin, err error)
SendJoin(ctx context.Context, s gomatrixserverlib.ServerName, event *gomatrixserverlib.Event) (res gomatrixserverlib.RespSendJoin, err error)
MakeLeave(ctx context.Context, s gomatrixserverlib.ServerName, roomID, userID string) (res gomatrixserverlib.RespMakeLeave, err error)
SendLeave(ctx context.Context, s gomatrixserverlib.ServerName, event *gomatrixserverlib.Event) (err error)
SendInviteV2(ctx context.Context, s gomatrixserverlib.ServerName, request gomatrixserverlib.InviteV2Request) (res gomatrixserverlib.RespInviteV2, err error)
GetEvent(ctx context.Context, s gomatrixserverlib.ServerName, eventID string) (res gomatrixserverlib.Transaction, err error)
GetEventAuth(ctx context.Context, s gomatrixserverlib.ServerName, roomVersion gomatrixserverlib.RoomVersion, roomID, eventID string) (res gomatrixserverlib.RespEventAuth, err error)
GetUserDevices(ctx context.Context, s gomatrixserverlib.ServerName, userID string) (gomatrixserverlib.RespUserDevices, error)
ClaimKeys(ctx context.Context, s gomatrixserverlib.ServerName, oneTimeKeys map[string]map[string]string) (gomatrixserverlib.RespClaimKeys, error)
QueryKeys(ctx context.Context, s gomatrixserverlib.ServerName, keys map[string][]string) (gomatrixserverlib.RespQueryKeys, error)
Backfill(ctx context.Context, s gomatrixserverlib.ServerName, roomID string, limit int, eventIDs []string) (res gomatrixserverlib.Transaction, err error)
MSC2836EventRelationships(ctx context.Context, dst gomatrixserverlib.ServerName, r gomatrixserverlib.MSC2836EventRelationshipsRequest, roomVersion gomatrixserverlib.RoomVersion) (res gomatrixserverlib.MSC2836EventRelationshipsResponse, err error)
MSC2946Spaces(ctx context.Context, dst gomatrixserverlib.ServerName, roomID string, suggestedOnly bool) (res gomatrixserverlib.MSC2946SpacesResponse, err error)
LookupServerKeys(ctx context.Context, s gomatrixserverlib.ServerName, keyRequests map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.Timestamp) ([]gomatrixserverlib.ServerKeys, error)
ExchangeThirdPartyInvite(ctx context.Context, s gomatrixserverlib.ServerName, builder gomatrixserverlib.EventBuilder) (err error)
LookupState(ctx context.Context, s gomatrixserverlib.ServerName, roomID string, eventID string, roomVersion gomatrixserverlib.RoomVersion) (res gomatrixserverlib.RespState, err error)
LookupStateIDs(ctx context.Context, s gomatrixserverlib.ServerName, roomID string, eventID string) (res gomatrixserverlib.RespStateIDs, err error)
LookupMissingEvents(ctx context.Context, s gomatrixserverlib.ServerName, roomID string, missing gomatrixserverlib.MissingEvents, roomVersion gomatrixserverlib.RoomVersion) (res gomatrixserverlib.RespMissingEvents, err error)
}
// FederationClientError is returned from FederationClient methods in the event of a problem.