matrix-spec/api/server-server/joins.yaml

# Copyright 2018 New Vector Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

swagger: '2.0'
info:
  title: "Matrix Federation Join Room API"
  version: "1.0.0"
host: localhost:8448
schemes:
  - https
basePath: /_matrix/federation/%SERVER_MAJOR_VERSION%
consumes:
  - application/json
produces:
  - application/json
securityDefinitions:
  $ref: definitions/security.yaml
paths:
  "/make_join/{roomId}/{userId}":
    get:
      summary: Get information required to make a join event for a room
      description: |-
        Asks the receiving server to return information that the sending
        server will need to prepare a join event to get into the room.
      operationId: makeJoin
      security:
        - signedRequest: []
      parameters:
        - in: path
          name: roomId
          type: string
          description: The room ID that is about to be joined.
          required: true
          x-example: "!abc123:matrix.org"
        - in: path
          name: userId
          type: string
          description: The user ID the join event will be for.
          required: true
          x-example: "@someone:example.org"
        - in: query
          type: array
          items:
            type: string
          name: ver
          description: |-
            The room versions the sending server has support for. Defaults
            to ``[1]``.
          x-example: ["1", "2"]
      responses:
        200:
          description: |-
            An unsigned event that the server may now use as a template
            for the rest of the `Joining Rooms`_ handshake.
          schema:
            allOf:
              - $ref: "definitions/unsigned_pdu.yaml"
              - type: object
                properties:
                  # Note: we override a bunch of parameters to change their descriptions
                  sender:
                    type: string
                    description: The user ID of the joining member.
                    example: "@someone:example.org"
                  origin:
                    type: string
                    description: The name of the resident homeserver.
                    example: "matrix.org"    
                  origin_server_ts:
                    type: integer
                    format: int64
                    description: A timestamp added by the resident homeserver.
                    example: 1234567890
                  type:
                    type: string
                    description: The value ``m.room.member``.
                    example: "m.room.member"
                  state_key:
                    type: string
                    description: The user ID of the joining member.
                    example: "@someone:example.org"
                  content:
                    type: object
                    title: Membership Event Content
                    description: The content of the event.
                    example: {"membership": "join"}
                    properties:
                      membership:
                        type: string
                        description: The value ``join``.
                        example: "join"
                    required: ['membership']
                  depth:
                    type: integer
                    description: This field must be present but is ignored; it may be 0.
                    example: 12
                  auth_events:
                    type: array
                    description: |-
                      An event reference list containing the authorization events that would
                      allow the member to join the room. This should normally be the 
                      ``m.room.create``, ``m.room.power_levels``, and ``m.room.join_rules``
                      events.
                    items:
                      type: array
                      maxItems: 2
                      minItems: 2
                      items:
                        - type: string
                          title: Event ID
                          example: "$abc123:matrix.org"
                        - type: object
                          title: Event Hash
                          example: {
                            "sha256": "abase64encodedsha256hashshouldbe43byteslong"
                          }
                          properties:
                            sha256:
                              type: string
                              description: The event hash.
                              example: abase64encodedsha256hashshouldbe43byteslong
                          required: ['sha256']
                  redacts:
                    type: string
                    description: Not used.
                required:
                  # Every other field is already flagged as required by the $ref
                  - state_key
          examples:
            application/json: {
              "$ref": "examples/unsigned_pdu.json",
              "type": "m.room.member",
              "state_key": "@someone:example.org",
              "content": {
                  "membership": "join"
              },
              "auth_events": [
                ["$room_cre4te_3vent:matrix.org", {"sha256": "abase64encodedsha256hashshouldbe43byteslong"}],
                ["$room_j0in_rul3s_3vent:matrix.org", {"sha256": "abase64encodedsha256hashshouldbe43byteslong"}],
                ["$room_p0wer_l3vels_3vent:matrix.org", {"sha256": "abase64encodedsha256hashshouldbe43byteslong"}]
              ]
            }
        400:
          description: |-
            The request is invalid or the room the server is attempting
            to join has a version that is not listed in the ``ver``
            parameters.

            The error should be passed through to clients so that they
            may give better feedback to users.
          schema:
            allOf:
              - $ref: "../client-server/definitions/errors/error.yaml"
              - type: object
                properties:
                  room_version:
                    type: string
                    description: |-
                      The version of the room. Required if the ``errcode``
                      is ``M_INCOMPATIBLE_ROOM_VERSION``.
          examples:
            application/json: {
              "errcode": "M_INCOMPATIBLE_ROOM_VERSION",
              "error": "Your homeserver does not support the features required to join this room",
              "room_version": "3"
            }
  "/send_join/{roomId}/{eventId}":
    put:
      summary: Submit a signed join event to a resident server
      description: |-
        Submits a signed join event to the resident server for it
        to accept it into the room's graph.
      operationId: sendJoin
      security:
        - signedRequest: []
      parameters:
        - in: path
          name: roomId
          type: string
          description: The room ID that is about to be joined.
          required: true
          x-example: "!abc123:matrix.org"
        - in: path
          name: eventId
          type: string
          description: The event ID for the join event.
          required: true
          x-example: "$abc123:example.org"
        - in: body
          name: body
          type: object
          required: true
          schema:
            allOf:
              - $ref: "definitions/pdu.yaml"
              - type: object
                properties:
                  # Note: we override a bunch of parameters to change their descriptions
                  sender:
                    type: string
                    description: The user ID of the joining member.
                    example: "@someone:example.org"
                  origin:
                    type: string
                    description: The name of the joining homeserver.
                    example: "matrix.org"    
                  origin_server_ts:
                    type: integer
                    format: int64
                    description: A timestamp added by the joining homeserver.
                    example: 1234567890
                  type:
                    type: string
                    description: The value ``m.room.member``.
                    example: "m.room.member"
                  state_key:
                    type: string
                    description: The user ID of the joining member.
                    example: "@someone:example.org"
                  content:
                    type: object
                    title: Membership Event Content
                    description: The content of the event.
                    example: {"membership": "join"}
                    properties:
                      membership:
                        type: string
                        description: The value ``join``.
                        example: "join"
                    required: ['membership']
                  depth:
                    type: integer
                    description: This field must be present but is ignored; it may be 0.
                    example: 12
                  auth_events:
                    type: array
                    description: |-
                      An event reference list containing the authorization events that would
                      allow the member to join the room.
                    items:
                      type: array
                      maxItems: 2
                      minItems: 2
                      items:
                        - type: string
                          title: Event ID
                          example: "$abc123:matrix.org"
                        - type: object
                          title: Event Hash
                          example: {
                            "sha256": "abase64encodedsha256hashshouldbe43byteslong"
                          }
                          properties:
                            sha256:
                              type: string
                              description: The event hash.
                              example: abase64encodedsha256hashshouldbe43byteslong
                          required: ['sha256']
                  redacts:
                    type: string
                    description: Not used.
                required:
                  # Every other field is already flagged as required by the $ref
                  - state_key
          example: {
            "$ref": "examples/pdu.json",
            "type": "m.room.member",
            "state_key": "@someone:example.org",
            "content": {
                "membership": "join"
            }
          }
      responses:
        200:
          description: |-
            The full state for the room, having accepted the join event.
          schema:
            type: array
            minItems: 2
            maxItems: 2
            items:
              - type: integer
                description: The value ``200``.
                example: 200
              - type: object
                title: Room State
                description: The state for the room.
                properties:
                  origin:
                    type: string
                    description: The resident server's DNS name.
                  auth_chain:
                    type: array
                    description: The auth chain.
                    items:
                      type: object
                      schema:
                        $ref: "definitions/pdu.yaml"
                  state:
                    type: array
                    description: The room state.
                    items:
                      type: object
                      schema:
                        $ref: "definitions/pdu.yaml"
                required: ["auth_chain", "state", "origin"]
          examples:
            application/json: [
              200,
              {
                "origin": "matrix.org",
                "auth_chain": [{"$ref": "examples/pdu.json"}],
                "state": [{"$ref": "examples/pdu.json"}]
              }
            ]