mirror of
https://github.com/matrix-org/dendrite
synced 2024-09-06 11:15:34 +02:00
* Generic-based internal HTTP API (tested out on a few endpoints in the federation API)
* Add `PerformInvite`
* More tweaks
* Fix metric name
* Fix LookupStateIDs
* Lots of changes to clients
* Some serverside stuff
* Some error handling
* Use paths as metric names
* Revert "Use paths as metric names"
This reverts commit a9323a6a34
.
* Namespace metric names
* Remove duplicate entry
* Remove another duplicate entry
* Tweak error handling
* Some more tweaks
* Update error behaviour
* Some more error tweaking
* Fix API path for `PerformDeleteKeys`
* Fix another path
* Tweak federation client proxying
* Fix another path
* Don't return typed nils
* Some more tweaks, not that it makes any difference
* Tweak federation client proxying
* Maybe fix the key backup test
713 lines
25 KiB
Go
713 lines
25 KiB
Go
// Copyright 2022 The Matrix.org Foundation C.I.C.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package perform
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import (
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"context"
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"encoding/json"
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"fmt"
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"time"
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"github.com/matrix-org/dendrite/internal/eventutil"
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"github.com/matrix-org/dendrite/roomserver/api"
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"github.com/matrix-org/dendrite/setup/config"
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"github.com/matrix-org/gomatrixserverlib"
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"github.com/matrix-org/util"
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"github.com/sirupsen/logrus"
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)
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type Upgrader struct {
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Cfg *config.RoomServer
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URSAPI api.RoomserverInternalAPI
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}
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// fledglingEvent is a helper representation of an event used when creating many events in succession.
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type fledglingEvent struct {
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Type string `json:"type"`
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StateKey string `json:"state_key"`
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Content interface{} `json:"content"`
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}
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// PerformRoomUpgrade upgrades a room from one version to another
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func (r *Upgrader) PerformRoomUpgrade(
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ctx context.Context,
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req *api.PerformRoomUpgradeRequest,
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res *api.PerformRoomUpgradeResponse,
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) error {
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res.NewRoomID, res.Error = r.performRoomUpgrade(ctx, req)
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if res.Error != nil {
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res.NewRoomID = ""
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logrus.WithContext(ctx).WithError(res.Error).Error("Room upgrade failed")
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}
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return nil
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}
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func (r *Upgrader) performRoomUpgrade(
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ctx context.Context,
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req *api.PerformRoomUpgradeRequest,
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) (string, *api.PerformError) {
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roomID := req.RoomID
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userID := req.UserID
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evTime := time.Now()
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// Return an immediate error if the room does not exist
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if err := r.validateRoomExists(ctx, roomID); err != nil {
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return "", &api.PerformError{
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Code: api.PerformErrorNoRoom,
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Msg: "Error validating that the room exists",
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}
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}
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// 1. Check if the user is authorized to actually perform the upgrade (can send m.room.tombstone)
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if !r.userIsAuthorized(ctx, userID, roomID) {
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return "", &api.PerformError{
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Code: api.PerformErrorNotAllowed,
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Msg: "You don't have permission to upgrade the room, power level too low.",
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}
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}
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// TODO (#267): Check room ID doesn't clash with an existing one, and we
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// probably shouldn't be using pseudo-random strings, maybe GUIDs?
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newRoomID := fmt.Sprintf("!%s:%s", util.RandomString(16), r.Cfg.Matrix.ServerName)
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// Get the existing room state for the old room.
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oldRoomReq := &api.QueryLatestEventsAndStateRequest{
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RoomID: roomID,
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}
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oldRoomRes := &api.QueryLatestEventsAndStateResponse{}
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if err := r.URSAPI.QueryLatestEventsAndState(ctx, oldRoomReq, oldRoomRes); err != nil {
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return "", &api.PerformError{
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Msg: fmt.Sprintf("Failed to get latest state: %s", err),
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}
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}
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// Make the tombstone event
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tombstoneEvent, pErr := r.makeTombstoneEvent(ctx, evTime, userID, roomID, newRoomID)
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if pErr != nil {
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return "", pErr
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}
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// Generate the initial events we need to send into the new room. This includes copied state events and bans
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// as well as the power level events needed to set up the room
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eventsToMake, pErr := r.generateInitialEvents(ctx, oldRoomRes, userID, roomID, string(req.RoomVersion), tombstoneEvent)
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if pErr != nil {
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return "", pErr
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}
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// Send the setup events to the new room
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if pErr = r.sendInitialEvents(ctx, evTime, userID, newRoomID, string(req.RoomVersion), eventsToMake); pErr != nil {
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return "", pErr
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}
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// 5. Send the tombstone event to the old room
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if pErr = r.sendHeaderedEvent(ctx, tombstoneEvent, string(r.Cfg.Matrix.ServerName)); pErr != nil {
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return "", pErr
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}
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// If the old room was public, make sure the new one is too
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if pErr = r.publishIfOldRoomWasPublic(ctx, roomID, newRoomID); pErr != nil {
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return "", pErr
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}
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// If the old room had a canonical alias event, it should be deleted in the old room
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if pErr = r.clearOldCanonicalAliasEvent(ctx, oldRoomRes, evTime, userID, roomID); pErr != nil {
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return "", pErr
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}
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// 4. Move local aliases to the new room
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if pErr = moveLocalAliases(ctx, roomID, newRoomID, userID, r.URSAPI); pErr != nil {
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return "", pErr
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}
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// 6. Restrict power levels in the old room
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if pErr = r.restrictOldRoomPowerLevels(ctx, evTime, userID, roomID); pErr != nil {
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return "", pErr
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}
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return newRoomID, nil
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}
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func (r *Upgrader) getRoomPowerLevels(ctx context.Context, roomID string) (*gomatrixserverlib.PowerLevelContent, *api.PerformError) {
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oldPowerLevelsEvent := api.GetStateEvent(ctx, r.URSAPI, roomID, gomatrixserverlib.StateKeyTuple{
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EventType: gomatrixserverlib.MRoomPowerLevels,
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StateKey: "",
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})
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powerLevelContent, err := oldPowerLevelsEvent.PowerLevels()
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if err != nil {
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util.GetLogger(ctx).WithError(err).Error()
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return nil, &api.PerformError{
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Msg: "Power level event was invalid or malformed",
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}
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}
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return powerLevelContent, nil
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}
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func (r *Upgrader) restrictOldRoomPowerLevels(ctx context.Context, evTime time.Time, userID, roomID string) *api.PerformError {
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restrictedPowerLevelContent, pErr := r.getRoomPowerLevels(ctx, roomID)
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if pErr != nil {
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return pErr
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}
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// From: https://spec.matrix.org/v1.2/client-server-api/#server-behaviour-16
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// If possible, the power levels in the old room should also be modified to
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// prevent sending of events and inviting new users. For example, setting
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// events_default and invite to the greater of 50 and users_default + 1.
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restrictedDefaultPowerLevel := int64(50)
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if restrictedPowerLevelContent.UsersDefault+1 > restrictedDefaultPowerLevel {
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restrictedDefaultPowerLevel = restrictedPowerLevelContent.UsersDefault + 1
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}
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restrictedPowerLevelContent.EventsDefault = restrictedDefaultPowerLevel
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restrictedPowerLevelContent.Invite = restrictedDefaultPowerLevel
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restrictedPowerLevelsHeadered, resErr := r.makeHeaderedEvent(ctx, evTime, userID, roomID, fledglingEvent{
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Type: gomatrixserverlib.MRoomPowerLevels,
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StateKey: "",
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Content: restrictedPowerLevelContent,
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})
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if resErr != nil {
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if resErr.Code == api.PerformErrorNotAllowed {
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util.GetLogger(ctx).WithField(logrus.ErrorKey, resErr).Warn("UpgradeRoom: Could not restrict power levels in old room")
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} else {
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return resErr
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}
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} else {
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if resErr = r.sendHeaderedEvent(ctx, restrictedPowerLevelsHeadered, api.DoNotSendToOtherServers); resErr != nil {
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return resErr
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}
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}
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return nil
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}
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func moveLocalAliases(ctx context.Context,
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roomID, newRoomID, userID string,
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URSAPI api.RoomserverInternalAPI) *api.PerformError {
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var err error
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aliasReq := api.GetAliasesForRoomIDRequest{RoomID: roomID}
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aliasRes := api.GetAliasesForRoomIDResponse{}
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if err = URSAPI.GetAliasesForRoomID(ctx, &aliasReq, &aliasRes); err != nil {
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return &api.PerformError{
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Msg: fmt.Sprintf("Failed to get old room aliases: %s", err),
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}
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}
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for _, alias := range aliasRes.Aliases {
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removeAliasReq := api.RemoveRoomAliasRequest{UserID: userID, Alias: alias}
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removeAliasRes := api.RemoveRoomAliasResponse{}
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if err = URSAPI.RemoveRoomAlias(ctx, &removeAliasReq, &removeAliasRes); err != nil {
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return &api.PerformError{
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Msg: fmt.Sprintf("Failed to remove old room alias: %s", err),
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}
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}
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setAliasReq := api.SetRoomAliasRequest{UserID: userID, Alias: alias, RoomID: newRoomID}
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setAliasRes := api.SetRoomAliasResponse{}
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if err = URSAPI.SetRoomAlias(ctx, &setAliasReq, &setAliasRes); err != nil {
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return &api.PerformError{
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Msg: fmt.Sprintf("Failed to set new room alias: %s", err),
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}
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}
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}
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return nil
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}
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func (r *Upgrader) clearOldCanonicalAliasEvent(ctx context.Context, oldRoom *api.QueryLatestEventsAndStateResponse, evTime time.Time, userID, roomID string) *api.PerformError {
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for _, event := range oldRoom.StateEvents {
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if event.Type() != gomatrixserverlib.MRoomCanonicalAlias || !event.StateKeyEquals("") {
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continue
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}
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var aliasContent struct {
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Alias string `json:"alias"`
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AltAliases []string `json:"alt_aliases"`
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}
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if err := json.Unmarshal(event.Content(), &aliasContent); err != nil {
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return &api.PerformError{
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Msg: fmt.Sprintf("Failed to unmarshal canonical aliases: %s", err),
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}
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}
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if aliasContent.Alias == "" && len(aliasContent.AltAliases) == 0 {
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// There are no canonical aliases to clear, therefore do nothing.
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return nil
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}
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}
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emptyCanonicalAliasEvent, resErr := r.makeHeaderedEvent(ctx, evTime, userID, roomID, fledglingEvent{
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Type: gomatrixserverlib.MRoomCanonicalAlias,
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Content: map[string]interface{}{},
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})
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if resErr != nil {
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if resErr.Code == api.PerformErrorNotAllowed {
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util.GetLogger(ctx).WithField(logrus.ErrorKey, resErr).Warn("UpgradeRoom: Could not set empty canonical alias event in old room")
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} else {
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return resErr
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}
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} else {
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if resErr = r.sendHeaderedEvent(ctx, emptyCanonicalAliasEvent, api.DoNotSendToOtherServers); resErr != nil {
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return resErr
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}
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}
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return nil
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}
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func (r *Upgrader) publishIfOldRoomWasPublic(ctx context.Context, roomID, newRoomID string) *api.PerformError {
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// check if the old room was published
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var pubQueryRes api.QueryPublishedRoomsResponse
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err := r.URSAPI.QueryPublishedRooms(ctx, &api.QueryPublishedRoomsRequest{
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RoomID: roomID,
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}, &pubQueryRes)
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if err != nil {
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return &api.PerformError{
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Msg: "QueryPublishedRooms failed",
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}
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}
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// if the old room is published (was public), publish the new room
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if len(pubQueryRes.RoomIDs) == 1 {
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publishNewRoomAndUnpublishOldRoom(ctx, r.URSAPI, roomID, newRoomID)
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}
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return nil
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}
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func publishNewRoomAndUnpublishOldRoom(
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ctx context.Context,
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URSAPI api.RoomserverInternalAPI,
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oldRoomID, newRoomID string,
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) {
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// expose this room in the published room list
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var pubNewRoomRes api.PerformPublishResponse
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if err := URSAPI.PerformPublish(ctx, &api.PerformPublishRequest{
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RoomID: newRoomID,
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Visibility: "public",
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}, &pubNewRoomRes); err != nil {
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util.GetLogger(ctx).WithError(err).Error("failed to reach internal API")
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} else if pubNewRoomRes.Error != nil {
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// treat as non-fatal since the room is already made by this point
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util.GetLogger(ctx).WithError(pubNewRoomRes.Error).Error("failed to visibility:public")
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}
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var unpubOldRoomRes api.PerformPublishResponse
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// remove the old room from the published room list
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if err := URSAPI.PerformPublish(ctx, &api.PerformPublishRequest{
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RoomID: oldRoomID,
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Visibility: "private",
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}, &unpubOldRoomRes); err != nil {
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util.GetLogger(ctx).WithError(err).Error("failed to reach internal API")
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} else if unpubOldRoomRes.Error != nil {
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// treat as non-fatal since the room is already made by this point
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util.GetLogger(ctx).WithError(unpubOldRoomRes.Error).Error("failed to visibility:private")
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}
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}
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func (r *Upgrader) validateRoomExists(ctx context.Context, roomID string) error {
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verReq := api.QueryRoomVersionForRoomRequest{RoomID: roomID}
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verRes := api.QueryRoomVersionForRoomResponse{}
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if err := r.URSAPI.QueryRoomVersionForRoom(ctx, &verReq, &verRes); err != nil {
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return &api.PerformError{
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Code: api.PerformErrorNoRoom,
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Msg: "Room does not exist",
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}
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}
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return nil
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}
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func (r *Upgrader) userIsAuthorized(ctx context.Context, userID, roomID string,
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) bool {
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plEvent := api.GetStateEvent(ctx, r.URSAPI, roomID, gomatrixserverlib.StateKeyTuple{
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EventType: gomatrixserverlib.MRoomPowerLevels,
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StateKey: "",
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})
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if plEvent == nil {
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return false
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}
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pl, err := plEvent.PowerLevels()
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if err != nil {
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return false
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}
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// Check for power level required to send tombstone event (marks the current room as obsolete),
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// if not found, use the StateDefault power level
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return pl.UserLevel(userID) >= pl.EventLevel("m.room.tombstone", true)
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}
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// nolint:gocyclo
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func (r *Upgrader) generateInitialEvents(ctx context.Context, oldRoom *api.QueryLatestEventsAndStateResponse, userID, roomID, newVersion string, tombstoneEvent *gomatrixserverlib.HeaderedEvent) ([]fledglingEvent, *api.PerformError) {
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state := make(map[gomatrixserverlib.StateKeyTuple]*gomatrixserverlib.HeaderedEvent, len(oldRoom.StateEvents))
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for _, event := range oldRoom.StateEvents {
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if event.StateKey() == nil {
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// This shouldn't ever happen, but better to be safe than sorry.
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continue
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}
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if event.Type() == gomatrixserverlib.MRoomMember && !event.StateKeyEquals(userID) {
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// With the exception of bans and invites which we do want to copy, we
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// should ignore membership events that aren't our own, as event auth will
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// prevent us from being able to create membership events on behalf of other
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// users anyway unless they are invites or bans.
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membership, err := event.Membership()
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if err != nil {
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continue
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}
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switch membership {
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case gomatrixserverlib.Ban:
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case gomatrixserverlib.Invite:
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default:
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continue
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}
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}
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state[gomatrixserverlib.StateKeyTuple{EventType: event.Type(), StateKey: *event.StateKey()}] = event
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}
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// The following events are ones that we are going to override manually
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// in the following section.
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override := map[gomatrixserverlib.StateKeyTuple]struct{}{
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{EventType: gomatrixserverlib.MRoomCreate, StateKey: ""}: {},
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{EventType: gomatrixserverlib.MRoomMember, StateKey: userID}: {},
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{EventType: gomatrixserverlib.MRoomPowerLevels, StateKey: ""}: {},
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{EventType: gomatrixserverlib.MRoomJoinRules, StateKey: ""}: {},
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}
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// The overridden events are essential events that must be present in the
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// old room state. Check that they are there.
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for tuple := range override {
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if _, ok := state[tuple]; !ok {
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return nil, &api.PerformError{
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Msg: fmt.Sprintf("Essential event of type %q state key %q is missing", tuple.EventType, tuple.StateKey),
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}
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}
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}
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oldCreateEvent := state[gomatrixserverlib.StateKeyTuple{EventType: gomatrixserverlib.MRoomCreate, StateKey: ""}]
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oldMembershipEvent := state[gomatrixserverlib.StateKeyTuple{EventType: gomatrixserverlib.MRoomMember, StateKey: userID}]
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oldPowerLevelsEvent := state[gomatrixserverlib.StateKeyTuple{EventType: gomatrixserverlib.MRoomPowerLevels, StateKey: ""}]
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oldJoinRulesEvent := state[gomatrixserverlib.StateKeyTuple{EventType: gomatrixserverlib.MRoomJoinRules, StateKey: ""}]
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// Create the new room create event. Using a map here instead of CreateContent
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// means that we preserve any other interesting fields that might be present
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// in the create event (such as for the room types MSC).
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newCreateContent := map[string]interface{}{}
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_ = json.Unmarshal(oldCreateEvent.Content(), &newCreateContent)
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newCreateContent["creator"] = userID
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newCreateContent["room_version"] = newVersion
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newCreateContent["predecessor"] = gomatrixserverlib.PreviousRoom{
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EventID: tombstoneEvent.EventID(),
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RoomID: roomID,
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}
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newCreateEvent := fledglingEvent{
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Type: gomatrixserverlib.MRoomCreate,
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StateKey: "",
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Content: newCreateContent,
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}
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// Now create the new membership event. Same rules apply as above, so
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// that we preserve fields we don't otherwise know about. We'll always
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// set the membership to join though, because that is necessary to auth
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// the events after it.
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newMembershipContent := map[string]interface{}{}
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_ = json.Unmarshal(oldMembershipEvent.Content(), &newMembershipContent)
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newMembershipContent["membership"] = gomatrixserverlib.Join
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newMembershipEvent := fledglingEvent{
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Type: gomatrixserverlib.MRoomMember,
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StateKey: userID,
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Content: newMembershipContent,
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}
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// We might need to temporarily give ourselves a higher power level
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// than we had in the old room in order to be able to send all of
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// the relevant state events. This function will return whether we
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// had to override the power level events or not — if we did, we
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// need to send the original power levels again later on.
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powerLevelContent, err := oldPowerLevelsEvent.PowerLevels()
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if err != nil {
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util.GetLogger(ctx).WithError(err).Error()
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return nil, &api.PerformError{
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Msg: "Power level event content was invalid",
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}
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}
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tempPowerLevelsEvent, powerLevelsOverridden := createTemporaryPowerLevels(powerLevelContent, userID)
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// Now do the join rules event, same as the create and membership
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// events. We'll set a sane default of "invite" so that if the
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// existing join rules contains garbage, the room can still be
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// upgraded.
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newJoinRulesContent := map[string]interface{}{
|
|
"join_rule": gomatrixserverlib.Invite, // sane default
|
|
}
|
|
_ = json.Unmarshal(oldJoinRulesEvent.Content(), &newJoinRulesContent)
|
|
newJoinRulesEvent := fledglingEvent{
|
|
Type: gomatrixserverlib.MRoomJoinRules,
|
|
StateKey: "",
|
|
Content: newJoinRulesContent,
|
|
}
|
|
|
|
eventsToMake := make([]fledglingEvent, 0, len(state))
|
|
eventsToMake = append(
|
|
eventsToMake, newCreateEvent, newMembershipEvent,
|
|
tempPowerLevelsEvent, newJoinRulesEvent,
|
|
)
|
|
|
|
// For some reason Sytest expects there to be a guest access event.
|
|
// Create one if it doesn't exist.
|
|
if _, ok := state[gomatrixserverlib.StateKeyTuple{EventType: gomatrixserverlib.MRoomGuestAccess, StateKey: ""}]; !ok {
|
|
eventsToMake = append(eventsToMake, fledglingEvent{
|
|
Type: gomatrixserverlib.MRoomGuestAccess,
|
|
Content: map[string]string{
|
|
"guest_access": "forbidden",
|
|
},
|
|
})
|
|
}
|
|
|
|
// Duplicate all of the old state events into the new room.
|
|
for tuple, event := range state {
|
|
if _, ok := override[tuple]; ok {
|
|
// Don't duplicate events we have overridden already. They
|
|
// are already in `eventsToMake`.
|
|
continue
|
|
}
|
|
newEvent := fledglingEvent{
|
|
Type: tuple.EventType,
|
|
StateKey: tuple.StateKey,
|
|
}
|
|
if err = json.Unmarshal(event.Content(), &newEvent.Content); err != nil {
|
|
logrus.WithError(err).Error("Failed to unmarshal old event")
|
|
continue
|
|
}
|
|
eventsToMake = append(eventsToMake, newEvent)
|
|
}
|
|
|
|
// If we sent a temporary power level event into the room before,
|
|
// override that now by restoring the original power levels.
|
|
if powerLevelsOverridden {
|
|
eventsToMake = append(eventsToMake, fledglingEvent{
|
|
Type: gomatrixserverlib.MRoomPowerLevels,
|
|
Content: powerLevelContent,
|
|
})
|
|
}
|
|
return eventsToMake, nil
|
|
}
|
|
|
|
func (r *Upgrader) sendInitialEvents(ctx context.Context, evTime time.Time, userID, newRoomID, newVersion string, eventsToMake []fledglingEvent) *api.PerformError {
|
|
var err error
|
|
var builtEvents []*gomatrixserverlib.HeaderedEvent
|
|
authEvents := gomatrixserverlib.NewAuthEvents(nil)
|
|
for i, e := range eventsToMake {
|
|
depth := i + 1 // depth starts at 1
|
|
|
|
builder := gomatrixserverlib.EventBuilder{
|
|
Sender: userID,
|
|
RoomID: newRoomID,
|
|
Type: e.Type,
|
|
StateKey: &e.StateKey,
|
|
Depth: int64(depth),
|
|
}
|
|
err = builder.SetContent(e.Content)
|
|
if err != nil {
|
|
return &api.PerformError{
|
|
Msg: fmt.Sprintf("Failed to set content of new %q event: %s", builder.Type, err),
|
|
}
|
|
}
|
|
if i > 0 {
|
|
builder.PrevEvents = []gomatrixserverlib.EventReference{builtEvents[i-1].EventReference()}
|
|
}
|
|
var event *gomatrixserverlib.Event
|
|
event, err = r.buildEvent(&builder, &authEvents, evTime, gomatrixserverlib.RoomVersion(newVersion))
|
|
if err != nil {
|
|
return &api.PerformError{
|
|
Msg: fmt.Sprintf("Failed to build new %q event: %s", builder.Type, err),
|
|
}
|
|
}
|
|
|
|
if err = gomatrixserverlib.Allowed(event, &authEvents); err != nil {
|
|
return &api.PerformError{
|
|
Msg: fmt.Sprintf("Failed to auth new %q event: %s", builder.Type, err),
|
|
}
|
|
}
|
|
|
|
// Add the event to the list of auth events
|
|
builtEvents = append(builtEvents, event.Headered(gomatrixserverlib.RoomVersion(newVersion)))
|
|
err = authEvents.AddEvent(event)
|
|
if err != nil {
|
|
return &api.PerformError{
|
|
Msg: fmt.Sprintf("Failed to add new %q event to auth set: %s", builder.Type, err),
|
|
}
|
|
}
|
|
}
|
|
|
|
inputs := make([]api.InputRoomEvent, 0, len(builtEvents))
|
|
for _, event := range builtEvents {
|
|
inputs = append(inputs, api.InputRoomEvent{
|
|
Kind: api.KindNew,
|
|
Event: event,
|
|
Origin: r.Cfg.Matrix.ServerName,
|
|
SendAsServer: api.DoNotSendToOtherServers,
|
|
})
|
|
}
|
|
if err = api.SendInputRoomEvents(ctx, r.URSAPI, inputs, false); err != nil {
|
|
return &api.PerformError{
|
|
Msg: fmt.Sprintf("Failed to send new room %q to roomserver: %s", newRoomID, err),
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (r *Upgrader) makeTombstoneEvent(
|
|
ctx context.Context,
|
|
evTime time.Time,
|
|
userID, roomID, newRoomID string,
|
|
) (*gomatrixserverlib.HeaderedEvent, *api.PerformError) {
|
|
content := map[string]interface{}{
|
|
"body": "This room has been replaced",
|
|
"replacement_room": newRoomID,
|
|
}
|
|
event := fledglingEvent{
|
|
Type: "m.room.tombstone",
|
|
Content: content,
|
|
}
|
|
return r.makeHeaderedEvent(ctx, evTime, userID, roomID, event)
|
|
}
|
|
|
|
func (r *Upgrader) makeHeaderedEvent(ctx context.Context, evTime time.Time, userID, roomID string, event fledglingEvent) (*gomatrixserverlib.HeaderedEvent, *api.PerformError) {
|
|
builder := gomatrixserverlib.EventBuilder{
|
|
Sender: userID,
|
|
RoomID: roomID,
|
|
Type: event.Type,
|
|
StateKey: &event.StateKey,
|
|
}
|
|
err := builder.SetContent(event.Content)
|
|
if err != nil {
|
|
return nil, &api.PerformError{
|
|
Msg: fmt.Sprintf("Failed to set new %q event content: %s", builder.Type, err),
|
|
}
|
|
}
|
|
var queryRes api.QueryLatestEventsAndStateResponse
|
|
headeredEvent, err := eventutil.QueryAndBuildEvent(ctx, &builder, r.Cfg.Matrix, evTime, r.URSAPI, &queryRes)
|
|
if err == eventutil.ErrRoomNoExists {
|
|
return nil, &api.PerformError{
|
|
Code: api.PerformErrorNoRoom,
|
|
Msg: "Room does not exist",
|
|
}
|
|
} else if e, ok := err.(gomatrixserverlib.BadJSONError); ok {
|
|
return nil, &api.PerformError{
|
|
Msg: e.Error(),
|
|
}
|
|
} else if e, ok := err.(gomatrixserverlib.EventValidationError); ok {
|
|
if e.Code == gomatrixserverlib.EventValidationTooLarge {
|
|
return nil, &api.PerformError{
|
|
Msg: e.Error(),
|
|
}
|
|
}
|
|
return nil, &api.PerformError{
|
|
Msg: e.Error(),
|
|
}
|
|
} else if err != nil {
|
|
return nil, &api.PerformError{
|
|
Msg: fmt.Sprintf("Failed to build new %q event: %s", builder.Type, err),
|
|
}
|
|
}
|
|
// check to see if this user can perform this operation
|
|
stateEvents := make([]*gomatrixserverlib.Event, len(queryRes.StateEvents))
|
|
for i := range queryRes.StateEvents {
|
|
stateEvents[i] = queryRes.StateEvents[i].Event
|
|
}
|
|
provider := gomatrixserverlib.NewAuthEvents(stateEvents)
|
|
if err = gomatrixserverlib.Allowed(headeredEvent.Event, &provider); err != nil {
|
|
return nil, &api.PerformError{
|
|
Code: api.PerformErrorNotAllowed,
|
|
Msg: fmt.Sprintf("Failed to auth new %q event: %s", builder.Type, err), // TODO: Is this error string comprehensible to the client?
|
|
}
|
|
}
|
|
|
|
return headeredEvent, nil
|
|
}
|
|
|
|
func createTemporaryPowerLevels(powerLevelContent *gomatrixserverlib.PowerLevelContent, userID string) (fledglingEvent, bool) {
|
|
// Work out what power level we need in order to be able to send events
|
|
// of all types into the room.
|
|
neededPowerLevel := powerLevelContent.StateDefault
|
|
for _, powerLevel := range powerLevelContent.Events {
|
|
if powerLevel > neededPowerLevel {
|
|
neededPowerLevel = powerLevel
|
|
}
|
|
}
|
|
|
|
// Make a copy of the existing power level content.
|
|
tempPowerLevelContent := *powerLevelContent
|
|
powerLevelsOverridden := false
|
|
|
|
// At this point, the "Users", "Events" and "Notifications" keys are all
|
|
// pointing to the map of the original PL content, so we will specifically
|
|
// override the users map with a new one and duplicate the values deeply,
|
|
// so that we can modify them without modifying the original.
|
|
tempPowerLevelContent.Users = make(map[string]int64, len(powerLevelContent.Users))
|
|
for key, value := range powerLevelContent.Users {
|
|
tempPowerLevelContent.Users[key] = value
|
|
}
|
|
|
|
// If the user who is upgrading the room doesn't already have sufficient
|
|
// power, then elevate their power levels.
|
|
if tempPowerLevelContent.UserLevel(userID) < neededPowerLevel {
|
|
tempPowerLevelContent.Users[userID] = neededPowerLevel
|
|
powerLevelsOverridden = true
|
|
}
|
|
|
|
// Then return the temporary power levels event.
|
|
return fledglingEvent{
|
|
Type: gomatrixserverlib.MRoomPowerLevels,
|
|
Content: tempPowerLevelContent,
|
|
}, powerLevelsOverridden
|
|
}
|
|
|
|
func (r *Upgrader) sendHeaderedEvent(
|
|
ctx context.Context,
|
|
headeredEvent *gomatrixserverlib.HeaderedEvent,
|
|
sendAsServer string,
|
|
) *api.PerformError {
|
|
var inputs []api.InputRoomEvent
|
|
inputs = append(inputs, api.InputRoomEvent{
|
|
Kind: api.KindNew,
|
|
Event: headeredEvent,
|
|
Origin: r.Cfg.Matrix.ServerName,
|
|
SendAsServer: sendAsServer,
|
|
})
|
|
if err := api.SendInputRoomEvents(ctx, r.URSAPI, inputs, false); err != nil {
|
|
return &api.PerformError{
|
|
Msg: fmt.Sprintf("Failed to send new %q event to roomserver: %s", headeredEvent.Type(), err),
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (r *Upgrader) buildEvent(
|
|
builder *gomatrixserverlib.EventBuilder,
|
|
provider gomatrixserverlib.AuthEventProvider,
|
|
evTime time.Time,
|
|
roomVersion gomatrixserverlib.RoomVersion,
|
|
) (*gomatrixserverlib.Event, error) {
|
|
eventsNeeded, err := gomatrixserverlib.StateNeededForEventBuilder(builder)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
refs, err := eventsNeeded.AuthEventReferences(provider)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
builder.AuthEvents = refs
|
|
event, err := builder.Build(
|
|
evTime, r.Cfg.Matrix.ServerName, r.Cfg.Matrix.KeyID,
|
|
r.Cfg.Matrix.PrivateKey, roomVersion,
|
|
)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return event, nil
|
|
}
|