113 lines
3.3 KiB
Go
113 lines
3.3 KiB
Go
// Copyright 2020 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 version
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import (
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"errors"
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"github.com/matrix-org/dendrite/roomserver/state"
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)
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type RoomVersionID int
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type EventFormatID int
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const (
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RoomVersionV1 RoomVersionID = iota + 1
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RoomVersionV2
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RoomVersionV3
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RoomVersionV4
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RoomVersionV5
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)
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const (
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EventFormatV1 EventFormatID = iota + 1 // original event ID formatting
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EventFormatV2 // event ID is event hash
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EventFormatV3 // event ID is URL-safe base64 event hash
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)
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type RoomVersionDescription struct {
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Supported bool
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Stable bool
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StateResolution state.StateResolutionVersion
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EventFormat EventFormatID
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EnforceSigningKeyValidity bool
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}
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var roomVersions = map[RoomVersionID]RoomVersionDescription{
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RoomVersionV1: RoomVersionDescription{
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Supported: true,
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Stable: true,
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StateResolution: state.StateResolutionAlgorithmV1,
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EventFormat: EventFormatV1,
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EnforceSigningKeyValidity: false,
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},
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RoomVersionV2: RoomVersionDescription{
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Supported: false,
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Stable: true,
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StateResolution: state.StateResolutionAlgorithmV2,
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EventFormat: EventFormatV1,
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EnforceSigningKeyValidity: false,
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},
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RoomVersionV3: RoomVersionDescription{
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Supported: false,
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Stable: true,
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StateResolution: state.StateResolutionAlgorithmV2,
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EventFormat: EventFormatV2,
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EnforceSigningKeyValidity: false,
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},
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RoomVersionV4: RoomVersionDescription{
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Supported: false,
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Stable: true,
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StateResolution: state.StateResolutionAlgorithmV2,
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EventFormat: EventFormatV3,
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EnforceSigningKeyValidity: false,
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},
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RoomVersionV5: RoomVersionDescription{
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Supported: false,
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Stable: true,
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StateResolution: state.StateResolutionAlgorithmV2,
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EventFormat: EventFormatV3,
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EnforceSigningKeyValidity: true,
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},
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}
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func GetDefaultRoomVersion() RoomVersionID {
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return RoomVersionV1
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}
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func GetRoomVersions() map[RoomVersionID]RoomVersionDescription {
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return roomVersions
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}
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func GetSupportedRoomVersions() map[RoomVersionID]RoomVersionDescription {
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versions := make(map[RoomVersionID]RoomVersionDescription)
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for id, version := range GetRoomVersions() {
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if version.Supported {
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versions[id] = version
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}
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}
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return versions
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}
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func GetSupportedRoomVersion(version RoomVersionID) (desc RoomVersionDescription, err error) {
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if version, ok := roomVersions[version]; ok {
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desc = version
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}
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if !desc.Supported {
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err = errors.New("unsupported room version")
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}
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return
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}
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