dendrite/federationsender/internal/perform.go
2020-05-01 13:01:50 +01:00

121 lines
3.6 KiB
Go

package internal
import (
"context"
"fmt"
"time"
"github.com/matrix-org/dendrite/federationsender/api"
"github.com/matrix-org/dendrite/federationsender/internal/perform"
"github.com/matrix-org/dendrite/roomserver/version"
"github.com/matrix-org/gomatrixserverlib"
)
// PerformJoinRequest implements api.FederationSenderInternalAPI
func (r *FederationSenderInternalAPI) PerformJoin(
ctx context.Context,
request *api.PerformJoinRequest,
response *api.PerformJoinResponse,
) (err error) {
// Look up the supported room versions.
var supportedVersions []gomatrixserverlib.RoomVersion
for version := range version.SupportedRoomVersions() {
supportedVersions = append(supportedVersions, version)
}
// Try to perform a make_join using the information supplied in the
// request.
respMakeJoin, err := r.federation.MakeJoin(
ctx,
request.ServerName,
request.RoomID,
request.UserID,
supportedVersions,
)
if err != nil {
// TODO: Check if the user was not allowed to join the room.
return fmt.Errorf("r.federation.MakeJoin: %w", err)
}
// Set all the fields to be what they should be, this should be a no-op
// but it's possible that the remote server returned us something "odd"
respMakeJoin.JoinEvent.Type = "m.room.member"
respMakeJoin.JoinEvent.Sender = request.UserID
respMakeJoin.JoinEvent.StateKey = &request.UserID
respMakeJoin.JoinEvent.RoomID = request.RoomID
respMakeJoin.JoinEvent.Redacts = ""
if request.Content == nil {
request.Content = map[string]interface{}{}
}
request.Content["membership"] = "join"
if err = respMakeJoin.JoinEvent.SetContent(request.Content); err != nil {
return fmt.Errorf("respMakeJoin.JoinEvent.SetContent: %w", err)
}
if err = respMakeJoin.JoinEvent.SetUnsigned(struct{}{}); err != nil {
return fmt.Errorf("respMakeJoin.JoinEvent.SetUnsigned: %w", err)
}
// Work out if we support the room version that has been supplied in
// the make_join response.
if respMakeJoin.RoomVersion == "" {
respMakeJoin.RoomVersion = gomatrixserverlib.RoomVersionV1
}
if _, err = respMakeJoin.RoomVersion.EventFormat(); err != nil {
return fmt.Errorf("respMakeJoin.RoomVersion.EventFormat: %w", err)
}
// Build the join event.
event, err := respMakeJoin.JoinEvent.Build(
time.Now(),
r.cfg.Matrix.ServerName,
r.cfg.Matrix.KeyID,
r.cfg.Matrix.PrivateKey,
respMakeJoin.RoomVersion,
)
if err != nil {
return fmt.Errorf("respMakeJoin.JoinEvent.Build: %w", err)
}
// Try to perform a send_join using the newly built event.
respSendJoin, err := r.federation.SendJoin(
ctx,
request.ServerName,
event,
respMakeJoin.RoomVersion,
)
if err != nil {
return fmt.Errorf("r.federation.SendJoin: %w", err)
}
// Check that the send_join response was valid.
joinCtx := perform.JoinContext(r.federation, r.keyRing)
if err = joinCtx.CheckSendJoinResponse(
ctx, event, request.ServerName, respMakeJoin, respSendJoin,
); err != nil {
return fmt.Errorf("perform.JoinRequest.CheckSendJoinResponse: %w", err)
}
// If we successfully performed a send_join above then the other
// server now thinks we're a part of the room. Send the newly
// returned state to the roomserver to update our local view.
if err = r.producer.SendEventWithState(
ctx,
respSendJoin.ToRespState(),
event.Headered(respMakeJoin.RoomVersion),
); err != nil {
return fmt.Errorf("r.producer.SendEventWithState: %w", err)
}
// Everything went to plan.
return nil
}
// PerformLeaveRequest implements api.FederationSenderInternalAPI
func (r *FederationSenderInternalAPI) PerformLeave(
ctx context.Context,
request *api.PerformLeaveRequest,
response *api.PerformLeaveResponse,
) (err error) {
return nil
}