# Copyright 2018 New Vector Ltd # Copyright 2020 The Matrix.org Foundation C.I.C. # # 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. openapi: 3.1.0 info: title: Matrix Federation Join Room API version: 1.0.0 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 description: The room ID that is about to be joined. required: true example: "!abc123:matrix.org" schema: type: string - in: path name: userId description: The user ID the join event will be for. required: true example: "@someone:example.org" schema: type: string - in: query name: ver description: |- The room versions the sending server has support for. Defaults to `[1]`. example: - "1" - "2" schema: type: array items: type: string responses: "200": description: |- A template to be used for the rest of the [Joining Rooms](/server-server-api/#joining-rooms) handshake. Note that events have a different format depending on the room version - check the [room version specification](/rooms) for precise event formats. **The response body here describes the common event fields in more detail and may be missing other required fields for a PDU.** content: application/json: schema: type: object properties: room_version: type: string description: |- The version of the room where the server is trying to join. If not provided, the room version is assumed to be either "1" or "2". example: "2" event: description: |- An unsigned template event. Note that events have a different format depending on the room version - check the [room version specification](/rooms) for precise event formats. type: object title: Event Template properties: 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 join_authorised_via_users_server: type: string x-addedInMatrixVersion: "1.2" description: |- Required if the room is [restricted](/client-server-api/#restricted-rooms) and is joining through one of the conditions available. If the user is responding to an invite, this is not required. An arbitrary user ID belonging to the resident server in the room being joined that is able to issue invites to other users. This is used in later validation of the auth rules for the `m.room.member` event. required: - membership required: - state_key - origin - origin_server_ts - type - content - sender examples: response: value: { "room_version": "2", "event": { "room_id": "!somewhere:example.org", "type": "m.room.member", "state_key": "@someone:example.org", "origin": "example.org", "origin_server_ts": 1549041175876, "sender": "@someone:example.org", "content": { "membership": "join", "join_authorised_via_users_server": "@anyone:resident.example.org" } } } "400": description: |- The request is invalid, the room the server is attempting to join has a version that is not listed in the `ver` parameters, or the server was unable to validate [restricted room conditions](#restricted-rooms). The error should be passed through to clients so that they may give better feedback to users. New in `v1.2`, the following error conditions might happen: If the room is [restricted](/client-server-api/#restricted-rooms) and none of the conditions can be validated by the server then the `errcode` `M_UNABLE_TO_AUTHORISE_JOIN` must be used. This can happen if the server does not know about any of the rooms listed as conditions, for example. `M_UNABLE_TO_GRANT_JOIN` is returned to denote that a different server should be attempted for the join. This is typically because the resident server can see that the joining user satisfies one or more conditions, such as in the case of [restricted rooms](/client-server-api/#restricted-rooms), but the resident server would be unable to meet the auth rules governing `join_authorised_via_users_server` on the resulting `m.room.member` event. content: application/json: 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: response: value: { "errcode": "M_INCOMPATIBLE_ROOM_VERSION", "error": "Your homeserver does not support the features required to join this room", "room_version": "3" } "403": description: |- The room that the joining server is attempting to join does not permit the user to join. content: application/json: schema: $ref: ../client-server/definitions/errors/error.yaml examples: response: value: { "errcode": "M_FORBIDDEN", "error": "You are not invited to this room" } "404": description: |- The room that the joining server is attempting to join is unknown to the receiving server. content: application/json: schema: $ref: ../client-server/definitions/errors/error.yaml examples: response: value: { "errcode": "M_NOT_FOUND", "error": "Unknown room" } "/send_join/{roomId}/{eventId}": put: deprecated: true summary: Submit a signed join event to a resident server description: |- **Note:** Servers should instead prefer to use the v2 `/send_join` endpoint. Submits a signed join event to the resident server for it to accept it into the room's graph. Note that events have a different format depending on the room version - check the [room version specification](/rooms) for precise event formats. **The request and response body here describe the common event fields in more detail and may be missing other required fields for a PDU.** operationId: sendJoinV1 security: - signedRequest: [] parameters: - in: path name: roomId description: The room ID that is about to be joined. required: true example: "!abc123:matrix.org" schema: type: string - in: path name: eventId description: The event ID for the join event. required: true example: $abc123:example.org schema: type: string requestBody: content: application/json: schema: type: object properties: 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 join_authorised_via_users_server: type: string x-addedInMatrixVersion: "1.2" description: |- Required if the room is [restricted](/client-server-api/#restricted-rooms) and is joining through one of the conditions available. If the user is responding to an invite, this is not required. An arbitrary user ID belonging to the resident server in the room being joined that is able to issue invites to other users. This is used in later validation of the auth rules for the `m.room.member` event. The resident server which owns the provided user ID must have a valid signature on the event. If the resident server is receiving the `/send_join` request, the signature must be added before sending or persisting the event to other servers. required: - membership required: - state_key - sender - origin - origin_server_ts - type - content required: true responses: "200": description: The join event has been accepted into the room. content: application/json: schema: type: array minItems: 2 maxItems: 2 items: anyOf: - 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 [server name](/appendices/#server-name). auth_chain: type: array description: |- The auth chain for the entire current room state prior to the join event. Note that events have a different format depending on the room version - check the [room version specification](/rooms) for precise event formats. items: type: object title: PDU description: |- The [PDUs](/server-server-api/#pdus) that make up the auth chain. The event format varies depending on the room version - check the [room version specification](/rooms) for precise event formats. state: type: array description: |- The resolved current room state prior to the join event. The event format varies depending on the room version - check the [room version specification](/rooms) for precise event formats. items: type: object title: PDU description: |- The [PDUs](/server-server-api/#pdus) for the fully resolved state of the room. The event format varies depending on the room version - check the [room version specification](/rooms) for precise event formats. required: - auth_chain - state - origin examples: response: value: [ 200, { "origin": "matrix.org", "auth_chain": [ { "$ref": "examples/minimal_pdu.json" } ], "state": [ { "$ref": "examples/minimal_pdu.json" } ], "event": { "$ref": "examples/pdu_v4_join_membership.json" } } ] servers: - url: "{protocol}://{hostname}{basePath}" variables: protocol: enum: - http - https default: https hostname: default: localhost:8448 basePath: default: /_matrix/federation/v1 components: securitySchemes: signedRequest: $ref: definitions/security.yaml#/signedRequest