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8
api/application-service/application_service.yaml
View file

@ -214,7 +214,7 @@ paths:
This API is called by the homeserver when it wants to present clients
with specific information about the various third party networks that
an application service supports.
operationId: queryMetadata
operationId: getProtocolMetadata
parameters:
- in: path
name: protocol
@ -270,7 +270,7 @@ paths:
required: true
x-example: irc
- in: query
name: field1, field2...
name: fields...
type: string
description: |-
One or more custom fields that are passed to the application
@ -321,7 +321,7 @@ paths:
required: true
x-example: irc
- in: query
name: field1, field2...
name: fields...
type: string
description: |-
One or more custom fields that are passed to the application
@ -446,4 +446,4 @@ paths:
"errcode": "COM.EXAMPLE.MYAPPSERVICE_NOT_FOUND"
}
schema:
$ref: ../client-server/definitions/errors/error.yaml
$ref: ../client-server/definitions/errors/error.yaml

2
api/application-service/definitions/protocol_metadata.yaml
View file

@ -13,6 +13,8 @@
# limitations under the License.
type: object
description: Dictionary of supported third party protocols.
additionalProperties:
$ref: protocol.yaml
example: {
"irc": {
"user_fields": ["network", "nickname"],

2
api/application-service/definitions/user.yaml
View file

@ -27,5 +27,5 @@ properties:
type: object
example:
"user": "jim"
title: Location
title: User
type: object

22
api/client-server/third_party_lookup.yaml
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@ -34,7 +34,9 @@ paths:
Fetches the overall metadata about protocols supported by the
homeserver. Includes both the available protocols and all fields
required for queries against each protocol.
operationId: queryMetadata
operationId: getProtocols
security:
- accessToken: []
responses:
200:
description: The protocols supported by the homeserver.
@ -45,7 +47,9 @@ paths:
summary: Retrieve metadata about a specific protocol that the homeserver supports.
description: |-
Fetches the metadata from the homeserver about a particular third party protocol.
operationId: queryMetadata
operationId: getProtocolMetadata
security:
- accessToken: []
parameters:
- in: path
name: protocol
@ -80,6 +84,8 @@ paths:
identifier. It should attempt to canonicalise the identifier as much
as reasonably possible given the network type.
operationId: queryLocationByProtocol
security:
- accessToken: []
parameters:
- in: path
name: protocol
@ -113,6 +119,8 @@ paths:
Retrieve a Matrix User ID linked to a user on the third party service, given
a set of user parameters.
operationId: queryUserByProtocol
security:
- accessToken: []
parameters:
- in: path
name: protocol
@ -122,7 +130,7 @@ paths:
required: true
x-example: irc
- in: query
name: field1, field2...
name: fields...
type: string
description: |-
One or more custom fields that are passed to the AS to help identify the user.
@ -146,12 +154,15 @@ paths:
Retreive an array of third party network locations from a Matrix room
alias.
operationId: queryLocationByAlias
security:
- accessToken: []
parameters:
- in: query
name: alias
type: string
description: The Matrix room alias to look up.
required: true
x-example: "#matrix:matrix.org"
responses:
200:
description: |-
@ -172,12 +183,15 @@ paths:
description: |-
Retreive an array of third party users from a Matrix User ID.
operationId: queryUserByID
security:
- accessToken: []
parameters:
- in: query
name: userid
type: string
description: The Matrix User ID to look up.
required: true
x-example: "@bob:matrix.org"
responses:
200:
description: |-
@ -191,4 +205,4 @@ paths:
"errcode": "M_NOT_FOUND"
}
schema:
$ref: definitions/errors/error.yaml
$ref: definitions/errors/error.yaml

23
api/openapi_extensions.md Normal file
View file

@ -0,0 +1,23 @@
# OpenAPI Extensions
For some functionality that is not directly provided by the OpenAPI v2
specification, some extensions have been added that are to be consistent
across the specification. The defined extensions are listed below. Extensions
should not break parsers, however if extra functionality is required, aware
parsers should be able to take advantage of the added syntax.
## Extensible Query Parameters
<!-- TODO: Remove and change instances to 'explode' after OpenAPI/Swagger v3 update -->
If a unknown amount of query parameters can be added to a request, the `name`
must be `fields...`, with the trailing ellipses representing the possibility
of more fields.
Example:
```
- in: query
name: fields...
type: string
```

54
api/server-server/definitions/keys.yaml
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@ -20,50 +20,62 @@ properties:
server_name:
type: string
description: DNS name of the homeserver.
required: true # TODO: Verify
required: true
example: "example.org"
verify_keys:
type: object
description: Public keys of the homeserver for verifying digital signatures.
required: true # TODO: Verify
description: |-
Public keys of the homeserver for verifying digital signatures.
The object's key is the algorithm and version combined (``ed25519`` being the
algorithm and ``abc123`` being the version in the example below). Together,
this forms the Key ID. The version must have characters matching the regular
expression ``[a-zA-Z0-9_]``.
required: true
additionalProperties:
type: object
title: Verify Key
example: {
"ed25519:auto2": {
"key": "Base+64+Encoded+Signature+Verification+Key"
"ed25519:abc123": {
"key": "VGhpcyBzaG91bGQgYmUgYSByZWFsIGVkMjU1MTkgcGF5bG9hZA"
}
}
properties:
key:
type: string
description: The key
description: The `Unpadded Base64`_ encoded key.
required: true
example: "Base+64+Encoded+Signature+Verification+Key"
example: "VGhpcyBzaG91bGQgYmUgYSByZWFsIGVkMjU1MTkgcGF5bG9hZA"
old_verify_keys:
type: object
description: The public keys that the server used to use and when it stopped using them.
description: |-
The public keys that the server used to use and when it stopped using them.
The object's key is the algorithm and version combined (``ed25519`` being the
algorithm and ``0ldK3y`` being the version in the example below). Together,
this forms the Key ID. The version must have characters matching the regular
expression ``[a-zA-Z0-9_]``.
additionalProperties:
type: object
title: Old Verify Key
example: {
"ed25519:auto1": {
"expired_ts": 922834800000,
"key": "Base+64+Encoded+Signature+Verification+Key"
"ed25519:0ldK3y": {
"expired_ts": 1532645052628,
"key": "VGhpcyBzaG91bGQgYmUgeW91ciBvbGQga2V5J3MgZWQyNTUxOSBwYXlsb2FkLg"
}
}
properties:
expired_ts:
type: integer
format: int64
description: The expiration time.
description: POSIX timestamp in milliseconds for when this key expired.
required: true
example: 922834800000
example: 1532645052628
key:
type: string
description: The key.
description: The `Unpadded Base64`_ encoded key.
required: true
example: "Base+64+Encoded+Signature+Verification+Key"
example: "VGhpcyBzaG91bGQgYmUgeW91ciBvbGQga2V5J3MgZWQyNTUxOSBwYXlsb2FkLg"
signatures:
type: object
description: Digital signatures for this object signed using the ``verify_keys``.
@ -72,7 +84,7 @@ properties:
title: Signed Server
example: {
"example.org": {
"ad25519:auto2": "Base+64+Encoded+Signature+Verification+Key"
"ad25519:abc123": "VGhpcyBzaG91bGQgYWN0dWFsbHkgYmUgYSBzaWduYXR1cmU"
}
}
additionalProperties:
@ -80,17 +92,19 @@ properties:
name: Encoded Signature Verification Key
tls_fingerprints:
type: array
description: Hashes of X.509 TLS certificates used by this server encoded as `Unpadded Base64`_.
description: Hashes of X.509 TLS certificates used by this server.
items:
type: object
title: TLS Fingerprint
properties:
sha256:
type: string
description: The encoded fingerprint.
example: Base+64+Encoded+SHA-256-Fingerprint
description: The `Unpadded Base64`_ encoded fingerprint.
example: "VGhpcyBpcyBoYXNoIHdoaWNoIHNob3VsZCBiZSBieXRlcw"
valid_until_ts:
type: integer
format: int64
description: POSIX timestamp when the list of valid keys should be refreshed.
description: |-
POSIX timestamp when the list of valid keys should be refreshed. Keys used beyond this
timestamp are no longer valid.
example: 1052262000000

4
api/server-server/definitions/keys_query_response.yaml
View file

@ -15,13 +15,13 @@ type: object
description: Server keys
example: {
"server_keys": [{
$ref: "../examples/server_key.json"
$ref: "../examples/server_key_notary_signed.json"
}]
}
properties:
server_keys:
type: array
title: Server Keys
description: The server keys.
description: The queried server's keys, signed by the notary server.
items:
$ref: "keys.yaml"

8
api/server-server/definitions/transaction.yaml
View file

@ -25,11 +25,13 @@ properties:
origin_server_ts:
type: integer
format: int64
description: Timestamp in milliseconds on originating homeserver when this transaction started.
example: 1234567890
description: |-
POSIX timestamp in milliseconds on originating homeserver when this
transaction started.
example: 1532991320875
pdus:
type: array
description: List of persistent updates to rooms.
items:
$ref: "pdu.yaml"
required: ['origin', 'origin_server_ts', 'pdus']
required: ['origin', 'origin_server_ts', 'pdus']

76
api/server-server/events.yaml
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@ -27,7 +27,7 @@ paths:
get:
summary: Get all the state of a given room
description: |-
Retrieves a snapshot of the entire current state of the given room.
Retrieves a snapshot of a room's state at a given event.
operationId: getRoomState
parameters:
- in: path
@ -36,11 +36,81 @@ paths:
description: The room ID to get state for.
required: true
x-example: "!abc123:matrix.org"
- in: query
name: event_id
type: string
description: An event ID in the room to retrieve the state at.
required: true
x-example: "$helloworld:matrix.org"
responses:
200:
description: The room state for the room (kept under ``pdus``).
description: |-
The fully resolved state for the room, including the authorization
chain for the events.
schema:
$ref: "definitions/transaction.yaml"
type: object
properties:
auth_chain:
type: array
description: |-
The full set of authorization events that make up the state
of the room, and their authorization events, recursively.
items:
$ref: "definitions/pdu.yaml"
example: [{"$ref": "examples/pdu.json"}]
pdus:
type: array
description: |-
The fully resolved state of the room at the given event.
items:
$ref: "definitions/pdu.yaml"
example: [{"$ref": "examples/pdu.json"}]
required: ['auth_chain', 'pdus']
"/state_ids/{roomId}":
get:
summary: Get all the state event IDs of a given room
description: |-
Retrieves a snapshot of a room's state at a given event, in the form of
event IDs. This performs the same function as calling ``/state/{roomId}``,
however this returns just the event IDs rather than the full events.
operationId: getRoomStateIds
parameters:
- in: path
name: roomId
type: string
description: The room ID to get state for.
required: true
x-example: "!abc123:matrix.org"
- in: query
name: event_id
type: string
description: An event ID in the room to retrieve the state at.
required: true
x-example: "$helloworld:matrix.org"
responses:
200:
description: |-
The fully resolved state for the room, including the authorization
chain for the events.
schema:
type: object
properties:
auth_chain_ids:
type: array
description: |-
The full set of authorization events that make up the state
of the room, and their authorization events, recursively.
items:
type: string
example: ["$an_event:domain.com"]
pdu_ids:
type: array
description: |-
The fully resolved state of the room at the given event.
items:
type: string
example: ["$an_event:domain.com"]
required: ['auth_chain_ids', 'pdu_ids']
"/event/{eventId}":
get:
summary: Get a single event

16
api/server-server/examples/server_key.json
View file

@ -1,23 +1,23 @@
{
"server_name": "example.org",
"verify_keys": {
"ed25519:auto2": {
"key": "Base+64+Encoded+Signature+Verification+Key"
"ed25519:abc123": {
"key": "VGhpcyBzaG91bGQgYmUgYSByZWFsIGVkMjU1MTkgcGF5bG9hZA"
}
},
"old_verify_keys": {
"ed25519:auto1": {
"expired_ts": 922834800000,
"key": "Base+64+Encoded+Old+Verify+Key"
"ed25519:0ldk3y": {
"expired_ts": 1532645052628,
"key": "VGhpcyBzaG91bGQgYmUgeW91ciBvbGQga2V5J3MgZWQyNTUxOSBwYXlsb2FkLg"
}
},
"signatures": {
"example.org": {
"ed25519:auto2": "Base+64+Encoded+Signature"
"ed25519:auto2": "VGhpcyBzaG91bGQgYWN0dWFsbHkgYmUgYSBzaWduYXR1cmU"
}
},
"tls_fingerprints": [{
"sha256": "Base+64+Encoded+SHA-256-Fingerprint"
"sha256": "VGhpcyBpcyBoYXNoIHdoaWNoIHNob3VsZCBiZSBieXRlcw"
}],
"valid_until_ts": 1052262000000
"valid_until_ts": 1652262000000
}

11
api/server-server/examples/server_key_notary_signed.json Normal file
View file

@ -0,0 +1,11 @@
{
"$ref": "server_key.json",
"signatures": {
"example.org": {
"ed25519:abc123": "VGhpcyBzaG91bGQgYWN0dWFsbHkgYmUgYSBzaWduYXR1cmU"
},
"notary.server.com": {
"ed25519:010203": "VGhpcyBpcyBhbm90aGVyIHNpZ25hdHVyZQ"
}
}
}

31
api/server-server/joins.yaml
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@ -29,7 +29,6 @@ paths:
description: |-
Asks the receiving server to return information that the sending
server will need to prepare a join event to get into the room.
This is part of the `Joining Rooms`_ handshake.
operationId: makeJoin
parameters:
- in: path
@ -95,7 +94,9 @@ paths:
type: array
description: |-
An event reference list containing the authorization events that would
allow the member to join the room.
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
@ -128,7 +129,12 @@ paths:
"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"}]
]
}
"/send_join/{roomId}/{eventId}":
put:
@ -250,27 +256,30 @@ paths:
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
properties: {}
# TODO: Verify schema
schema:
$ref: "definitions/pdu.yaml"
state:
type: array
description: The room state.
items:
type: object
properties: {}
# TODO: Verify schema
required: ["auth_chain", "state"]
schema:
$ref: "definitions/pdu.yaml"
required: ["auth_chain", "state", "origin"]
examples:
application/json: [
200,
{
# TODO: Use the appropriate refs (see TODOs in schema)
"auth_chain": [],
"state": []
"origin": "matrix.org",
"auth_chain": [{"$ref": "examples/pdu.json"}],
"state": [{"$ref": "examples/pdu.json"}]
}
]

66
api/server-server/keys_query.yaml
View file

@ -25,49 +25,61 @@ produces:
paths:
"/query/{serverName}/{keyId}":
get:
summary: Retrieve a server key.
description: Retrieve a server key.
summary: Query for another server's keys
description: |-
Query for another server's keys. The receiving (notary) server must
sign the keys returned by the queried server.
operationId: perspectivesKeyQuery
parameters:
- in: path
name: serverName
type: string
description: Server name.
description: The server's DNS name to query
required: true
x-example: matrix.org
- in: path
name: keyId
type: string
description: Key ID.
required: true
x-example: TODO # No examples in spec so far
description: |-
**Deprecated**. Servers should not use this parameter and instead
opt to return all keys, not just the requested one. The key ID to
look up.
required: false
x-example: "ed25519:abc123"
- in: query
name: minimum_valid_until_ts
type: integer
format: int64
description: Minimum Valid Until Milliseconds.
required: true # TODO: Verify
description: |-
A millisecond POSIX timestamp in milliseconds indicating when the returned
certificates will need to be valid until to be useful to the requesting server.
If not supplied, the current time as determined by the notary server is used.
required: false
x-example: 1234567890
responses:
200:
description: The keys for the server
description: |-
The keys for the server, or an empty array if the server could not be reached
and no cached keys were available.
schema:
$ref: "definitions/keys_query_response.yaml"
"/query":
post:
summary: Retrieve a server key
description: Retrieve a server key.
summary: Query for several server's keys
description: |-
Query for keys from multiple servers in a batch format. The receiving (notary)
server must sign the keys returned by the queried servers.
operationId: bulkPerspectivesKeyQuery
parameters:
- in: body
name: body
schema:
type: object
# TODO: Improve example
example: {
"server_keys": {
"{server_name}": {
"{key_id}": {
"example.org": {
"ed25519:abc123": {
"minimum_valid_until_ts": 1234567890
}
}
@ -76,7 +88,16 @@ paths:
properties:
server_keys:
type: object
description: The query criteria.
description: |-
The query criteria. The outer ``string`` key on the object is the
server name (eg: ``matrix.org``). The inner ``string`` key is the
Key ID to query for the particular server. If no key IDs are given
to be queried, the notary server should query for all keys. If no
servers are given, the notary server must return an empty ``server_keys``
array in the response.
The notary server may return multiple keys regardless of the Key IDs
given.
additionalProperties:
type: object
name: ServerName
@ -84,16 +105,25 @@ paths:
additionalProperties:
type: object
title: Query Criteria
description: The server keys to query.
description: The server key IDs to query.
properties:
minimum_valid_until_ts:
type: integer
format: int64
description: Minimum Valid Until MS.
description: |-
A millisecond POSIX timestamp in milliseconds indicating when
the returned certificates will need to be valid until to be
useful to the requesting server.
If not supplied, the current time as determined by the notary
server is used.
example: 1234567890
required: ['server_keys']
responses:
200:
description: The keys for the server.
description: |-
The keys for the queried servers, signed by the notary server. Servers which
are offline and have no cached keys will not be included in the result. This
may result in an empty array.
schema:
$ref: "definitions/keys_query_response.yaml"

29
api/server-server/keys_server.yaml
View file

@ -25,18 +25,37 @@ produces:
paths:
"/server/{keyId}":
get:
summary: Get the server's key
description: Get the server's key.
summary: Get the homeserver's public key(s)
description: |-
Gets the homeserver's published TLS fingerprints and signing keys.
The homeserver may have any number of active keys and may have a
number of old keys.
Intermediate notary servers should cache a response for half of its
lifetime to avoid serving a stale response. Originating servers should
avoid returning responses that expire in less than an hour to avoid
repeated reqests for a certificate that is about to expire. Requesting
servers should limit how frequently they query for certificates to
avoid flooding a server with requests.
If the server fails to respond to this request, intermediate notary
servers should continue to return the last response they received
from the server so that the signatures of old events can still be
checked.
operationId: getServerKey
parameters:
- in: path
name: keyId
type: string
description: Key ID
description: |-
**Deprecated**. Servers should not use this parameter and instead
opt to return all keys, not just the requested one. The key ID to
look up.
required: false
x-example: TODO # No examples in the spec so far
x-example: "ed25519:abc123"
deprecated: true
responses:
200:
description: The server's keys.
description: The homeserver's keys
schema:
$ref: "definitions/keys.yaml"

266
api/server-server/leaving.yaml Normal file
View file

@ -0,0 +1,266 @@
# 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 Leave Room API"
version: "1.0.0"
host: localhost:8448
schemes:
- https
basePath: /_matrix/federation/v1
produces:
- application/json
paths:
"/make_leave/{roomId}/{userId}":
get:
summary: Get information required to make a leave event for a room
description: |-
Asks the receiving server to return information that the sending
server will need to prepare a leave event to get out of the room.
operationId: makeLeave
parameters:
- in: path
name: roomId
type: string
description: The room ID that is about to be left.
required: true
x-example: "!abc123:matrix.org"
- in: path
name: userId
type: string
description: The user ID the leave event will be for.
required: true
x-example: "@someone:example.org"
responses:
200:
description: |-
An unsigned event that the sending server may use as a template
for when it calls ``/send_leave``.
schema:
allOf:
- $ref: "definitions/unsigned_pdu.yaml"
- type: object
properties:
# Note: we override a bunch of parameters to change their descriptions
sender:
type: string
description: The user ID of the leaving member.
example: "@someone:example.org"
origin:
type: string
description: The name of the resident homeserver.
example: "matrix.org"
origin_server_ts:
type: integer
format: int64
description: A timestamp added by the resident homeserver.
example: 1234567890
type:
type: string
description: The value ``m.room.member``.
example: "m.room.member"
state_key:
type: string
description: The user ID of the leaving member.
example: "@someone:example.org"
content:
type: object
title: Membership Event Content
description: The content of the event.
example: {"membership": "leave"}
properties:
membership:
type: string
description: The value ``leave``.
example: "leave"
required: ['membership']
auth_events:
type: array
description: |-
An event reference list containing the authorization events that would
allow the member to leave the room. This should normally be the
``m.room.create``, ``m.room.power_levels``, and ``m.room.join_rules``
events.
items:
type: array
maxItems: 2
minItems: 2
items:
- type: string
title: Event ID
example: "$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": "leave"
},
"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"}]
]
}
403:
description: |-
The request is not authorized. This could mean that the user is not in the room.
schema:
$ref: "../client-server/definitions/errors/error.yaml"
examples:
application/json: {
"errcode": "M_FORBIDDEN",
"error": "User is not in the room."
}
"/send_leave/{roomId}/{eventId}":
put:
summary: Submit a signed leave event to a resident server
description: |-
Submits a signed leave event to the resident server for it
to accept it into the room's graph.
operationId: sendLeave
parameters:
- in: path
name: roomId
type: string
description: The room ID that is about to be left.
required: true
x-example: "!abc123:matrix.org"
- in: path
name: eventId
type: string
description: The event ID for the leave event.
required: true
x-example: "$abc123:example.org"
- in: body
name: body
type: object
required: true
schema:
allOf:
- $ref: "definitions/pdu.yaml"
- type: object
properties:
# Note: we override a bunch of parameters to change their descriptions
sender:
type: string
description: The user ID of the leaving member.
example: "@someone:example.org"
origin:
type: string
description: The name of the leaving homeserver.
example: "matrix.org"
origin_server_ts:
type: integer
format: int64
description: A timestamp added by the leaving homeserver.
example: 1234567890
type:
type: string
description: The value ``m.room.member``.
example: "m.room.member"
state_key:
type: string
description: The user ID of the leaving member.
example: "@someone:example.org"
content:
type: object
title: Membership Event Content
description: The content of the event.
example: {"membership": "leave"}
properties:
membership:
type: string
description: The value ``leave``.
example: "leave"
required: ['membership']
depth:
type: integer
description: This field must be present but is ignored; it may be 0.
example: 12
auth_events:
type: array
description: |-
An event reference list containing the authorization events that would
allow the member to leave the room.
items:
type: array
maxItems: 2
minItems: 2
items:
- type: string
title: Event ID
example: "$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": "leave"
}
}
responses:
200:
description: |-
An empty response to indicate the event was accepted into the graph by
the receiving homeserver.
schema:
type: array
minItems: 2
maxItems: 2
items:
- type: integer
description: The value ``200``.
example: 200
- type: object
title: Empty Object
description: An empty object.
examples:
application/json: [200, {}]

58
api/server-server/transactions.yaml
View file

@ -30,16 +30,18 @@ paths:
Push messages representing live activity to another server. The destination name
will be set to that of the receiving server itself. Each embedded PDU in the
transaction body will be processed.
The sending server must wait and retry for a 200 OK response before sending a
transaction with a different ``txnId`` to the receiving server.
operationId: sendTransaction
parameters:
- in: path
name: txnId
type: string
# TODO: "Overrides any ID given in the JSON body" - What does this mean?
description: |-
The transaction ID. Overrides any ID given in the JSON body.
The transaction ID.
required: true
x-example: TODO # No examples in the spec so far
x-example: S0meTransacti0nId
- in: body
name: body
type: object
@ -51,7 +53,9 @@ paths:
properties:
edus:
type: array
description: List of ephemeral messages. May be omitted if there are no ephemeral messages to be sent.
description: |-
List of ephemeral messages. May be omitted if there are no ephemeral
messages to be sent.
items:
$ref: "definitions/edu.yaml"
example: {
@ -60,5 +64,47 @@ paths:
}
responses:
200:
# TODO: Spec this (and figure out what it is)
description: TODO
description: |-
The result of processing the transaction. The server is to use this response even in
the event of one or more PDUs failing to be processed.
schema:
type: array
minItems: 2
maxItems: 2
items:
- type: integer
description: The value ``200``.
example: 200
- type: object
title: PDU Processing Results
description: The results for the processing of each PDU in the transaction.
properties:
pdus:
type: object
description: |-
The PDUs from the original transaction. The string key represents the ID of the
PDU (event) that was processed.
additionalProperties:
type: object
title: PDU Processing Result
description: Information about how the PDU was handled.
properties:
error:
type: string
description: |-
A human readable description about what went wrong in processing this PDU.
If no error is present, the PDU can be considered successfully handled.
example: "You are not allowed to send a message to this room."
required: ['pdus']
examples:
application/json: [
200,
{
"pdus": {
"$successful_event:domain.com": {},
"$failed_event:example.org": {
"error": "You are not allowed to send a message to this room."
}
}
}
]

291
specification/server_server_api.rst
View file

@ -106,15 +106,17 @@ Server implementation
Retrieving Server Keys
~~~~~~~~~~~~~~~~~~~~~~
Version 2
+++++++++
.. NOTE::
There was once a "version 1" of the key exchange. It has been removed from the
specification due to lack of significance. It may be reviewed `here
<https://github.com/matrix-org/matrix-doc/blob/51faf8ed2e4a63d4cfd6d23183698ed169956cc0/specification/server_server_api.rst#232version-1>`_.
Each homeserver publishes its public keys under ``/_matrix/key/v2/server/``.
Homeservers query for keys by either getting ``/_matrix/key/v2/server/``
Each homeserver publishes its public keys under ``/_matrix/key/v2/server/{keyId}``.
Homeservers query for keys by either getting ``/_matrix/key/v2/server/{keyId}``
directly or by querying an intermediate notary server using a
``/_matrix/key/v2/query`` API. Intermediate notary servers query the
``/_matrix/key/v2/server/`` API on behalf of another server and sign the
response with their own key. A server may query multiple notary servers to
``/_matrix/key/v2/query/{serverName}/{keyId}`` API. Intermediate notary servers
query the ``/_matrix/key/v2/server/{keyId}`` API on behalf of another server and
sign the response with their own key. A server may query multiple notary servers to
ensure that they all report the same public keys.
This approach is borrowed from the `Perspectives Project`_, but modified to
@ -126,113 +128,33 @@ server by querying other servers.
.. _Perspectives Project: https://web.archive.org/web/20170702024706/https://perspectives-project.org/
Publishing Keys
^^^^^^^^^^^^^^^
+++++++++++++++
Homeservers publish the allowed TLS fingerprints and signing keys in a JSON
object at ``/_matrix/key/v2/server/{key_id}``. The response contains a list of
``verify_keys`` that are valid for signing federation requests made by the
server and for signing events. It contains a list of ``old_verify_keys`` which
homeserver and for signing events. It contains a list of ``old_verify_keys`` which
are only valid for signing events. Finally the response contains a list of TLS
certificate fingerprints to validate any connection made to the server.
A server may have multiple keys active at a given time. A server may have any
number of old keys. It is recommended that servers return a single JSON
response listing all of its keys whenever any ``key_id`` is requested to reduce
the number of round trips needed to discover the relevant keys for a server.
However a server may return different responses for a different ``key_id``.
The ``tls_certificates`` field contains a list of hashes of the X.509 TLS
certificates currently used by the server. The list must include SHA-256 hashes
for every certificate currently in use by the server. These fingerprints are
valid until the millisecond POSIX timestamp in ``valid_until_ts``.
The ``verify_keys`` can be used to sign requests and events made by the server
until the millisecond POSIX timestamp in ``valid_until_ts``. If a homeserver
receives an event with a ``origin_server_ts`` after the ``valid_until_ts`` then
it should request that ``key_id`` for the originating server to check whether
the key has expired.
The ``old_verify_keys`` can be used to sign events with an ``origin_server_ts``
before the ``expired_ts``. The ``expired_ts`` is a millisecond POSIX timestamp
of when the originating server stopped using that key.
Intermediate notary servers should cache a response for half of its remaining
lifetime to avoid serving a stale response. Originating servers should avoid
returning responses that expire in less than an hour to avoid repeated requests
for a certificate that is about to expire. Requesting servers should limit how
frequently they query for certificates to avoid flooding a server with
requests.
If a server goes offline intermediate notary servers should continue to return
the last response they received from that server so that the signatures of old
events sent by that server can still be checked.
certificate fingerprints to validate any connection made to the homeserver.
{{keys_server_ss_http_api}}
Querying Keys Through Another Server
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
++++++++++++++++++++++++++++++++++++
Servers may offer a query API ``/_matrix/key/v2/query/`` for getting the keys
for another server. This API can be used to GET a list of JSON objects for a
given server or to POST a bulk query for a number of keys from a number of
servers. Either way the response is a list of JSON objects containing the
JSON published by the server under ``/_matrix/key/v2/server/`` signed by
both the originating server and by this server.
Servers may query another server's keys through a notary server. The notary
server may be another homeserver. The notary server will retrieve keys from
the queried servers through use of the ``/_matrix/key/v2/server/{keyId}``
API. The notary server will additionally sign the response from the queried
server before returning the results.
The ``minimum_valid_until_ts`` is a millisecond POSIX timestamp indicating
when the returned certificate will need to be valid until to be useful to the
requesting server. This can be set using the maximum ``origin_server_ts`` of
a batch of events that a requesting server is trying to validate. This allows
an intermediate notary server to give a prompt cached response even if the
originating server is offline.
This API can return keys for servers that are offline by using cached responses
taken from when the server was online. Keys can be queried from multiple
servers to mitigate against DNS spoofing.
Notary servers can return keys for servers that are offline or having issues
serving their own keys by using cached responses. Keys can be queried from
multiple servers to mitigate against DNS spoofing.
{{keys_query_ss_http_api}}
Version 1
+++++++++
.. WARNING::
Version 1 of key distribution is obsolete.
Homeservers publish their TLS certificates and signing keys in a JSON object
at ``/_matrix/key/v1``.
==================== =================== ======================================
Key Type Description
==================== =================== ======================================
``server_name`` String DNS name of the homeserver.
``verify_keys`` Object Public keys of the homeserver for
verifying digital signatures.
``signatures`` Object Digital signatures for this object
signed using the ``verify_keys``.
``tls_certificate`` String The X.509 TLS certificate used by this
this server encoded as `Unpadded Base64`_.
==================== =================== ======================================
.. code:: json
{
"server_name": "example.org",
"signatures": {
"example.org": {
"ed25519:auto": "Base+64+Encoded+Signature"
}
},
"tls_certificate": "Base+64+Encoded+DER+Encoded+X509+TLS+Certificate",
"verify_keys": {
"ed25519:auto": "Base+64+Encoded+Signature+Verification+Key"
}
}
When fetching the keys for a server the client should check that the TLS
certificate in the JSON matches the TLS server certificate for the connection
and should check that the JSON signatures are correct for the supplied
``verify_keys``.
Transactions
------------
@ -242,41 +164,7 @@ of Transaction messages, which are encoded as JSON objects, passed over an HTTP
PUT request. A Transaction is meaningful only to the pair of homeservers that
exchanged it; they are not globally-meaningful.
Each transaction has:
- An opaque transaction ID, unique among transactions from the same origin.
- A timestamp (UNIX epoch time in milliseconds) generated by its origin
server.
- An origin and destination server name.
- A list of PDUs and EDUs - the actual message payload that the Transaction
carries.
Transaction Fields
~~~~~~~~~~~~~~~~~~
==================== =================== ======================================
Key Type Description
==================== =================== ======================================
``origin`` String **Required**. ``server_name`` of homeserver sending
this transaction.
``origin_server_ts`` Integer **Required**. Timestamp in milliseconds on
originating homeserver when this
transaction started.
``pdus`` List of Objects **Required**. List of persistent updates to rooms.
``edus`` List of Objects List of ephemeral messages. May be omitted
if there are no ephemeral messages to
be sent.
==================== =================== ======================================
Example:
.. code:: json
{
"origin_server_ts": 1404835423000,
"origin": "matrix.org",
"pdus": [...],
"edus": [...]
}
{{transactions_ss_http_api}}
PDUs
----
@ -681,16 +569,8 @@ All these URLs are name-spaced within a prefix of::
/_matrix/federation/v1/...
{{transactions_ss_http_api}}
{{events_ss_http_api}}
{{query_general_ss_http_api}}
{{joins_ss_http_api}}
Joining Rooms
-------------
@ -742,94 +622,34 @@ homeservers, though most in practice will use just two.
<---------- join response
The first part of the handshake usually involves using the directory server to
request the room ID and join candidates. This is covered in more detail on the
directory server documentation, below. In the case of a new user joining a
room as a result of a received invite, the joining user's homeserver could
optimise this step away by picking the origin server of that invite message as
the join candidate. However, the joining server should be aware that the origin
server of the invite might since have left the room, so should be prepared to
fall back on the regular join flow if this optimisation fails.
request the room ID and join candidates through the |/query/directory|_
API endpoint. In the case of a new user joining a room as a result of a received
invite, the joining user's homeserver could optimise this step away by picking
the origin server of that invite message as the join candidate. However, the
joining server should be aware that the origin server of the invite might since
have left the room, so should be prepared to fall back on the regular join flow
if this optimisation fails.
Once the joining server has the room ID and the join candidates, it then needs
to obtain enough information about the room to fill in the required fields of
the ``m.room.member`` event. It obtains this by selecting a resident from the
candidate list, and requesting the ``make_join`` endpoint using a ``GET``
request, specifying the room ID and the user ID of the new member who is
attempting to join.
candidate list, and using the ``GET /make_join`` endpoint. The resident server
will then reply with enough information for the joining server to fill in the
event.
The resident server replies to this request with a JSON-encoded object having a
single key called ``event``; within this is an object whose fields contain some
of the information that the joining server will need. Despite its name, this
object is not a full event; notably it does not need to be hashed or signed by
the resident homeserver. The required fields are:
======================== ============ =========================================
Key Type Description
======================== ============ =========================================
``type`` String The value ``m.room.member``.
``auth_events`` List An event-reference list containing the
authorization events that would allow
this member to join.
``content`` Object The event content.
``depth`` Integer (this field must be present but is
ignored; it may be 0)
``origin`` String The name of the resident homeserver.
``origin_server_ts`` Integer A timestamp added by the resident
homeserver.
``prev_events`` List An event-reference list containing the
immediate predecessor events.
``room_id`` String The room ID of the room.
``sender`` String The user ID of the joining member.
``state_key`` String The user ID of the joining member.
======================== ============ =========================================
The ``content`` field itself must be an object, containing:
======================== ============ =========================================
Key Type Description
======================== ============ =========================================
``membership`` String The value ``join``.
======================== ============ =========================================
The joining server now has sufficient information to construct the real join
event from these protoevent fields. It copies the values of most of them,
adding (or replacing) the following fields:
======================== ============ =========================================
Key Type Description
======================== ============ =========================================
``event_id`` String A new event ID specified by the joining
homeserver.
``origin`` String The name of the joining homeserver.
``origin_server_ts`` Integer A timestamp added by the joining
homeserver.
======================== ============ =========================================
This will be a true event, so the joining server should apply the event-signing
algorithm to it, resulting in the addition of the ``hashes`` and ``signatures``
fields.
The joining server is expected to add or replace the ``origin``, ``origin_server_ts``,
and ``event_id`` on the templated event received by the resident server. This
event is then signed by the joining server.
To complete the join handshake, the joining server must now submit this new
event to an resident homeserver, by using the ``send_join`` endpoint. This is
invoked using the room ID and the event ID of the new member event.
event to a resident homeserver, by using the ``PUT /send_join`` endpoint.
The resident homeserver then accepts this event into the room's event graph,
and responds to the joining server with the full set of state for the
newly-joined room. This is returned as a two-element list, whose first element
is the integer 200, and whose second element is an object which contains the
following keys:
newly-joined room. The resident server must also send the event to other servers
participating in the room.
======================== ============ =========================================
Key Type Description
======================== ============ =========================================
``auth_chain`` List A list of events giving all of the events
in the auth chains for the join event and
the events in ``state``.
``state`` List A complete list of the prevailing state
events at the instant just before
accepting the new ``m.room.member``
event.
======================== ============ =========================================
{{joins_ss_http_api}}
.. TODO-spec
- (paul) I don't really understand why the full auth_chain events are given
@ -865,11 +685,41 @@ the events it is missing.
{{backfill_ss_http_api}}
Retriving events
----------------
In some circumstances, a homeserver may be missing a particular event or information
about the room which cannot be easily determined from backfilling. These APIs provide
homeservers with the option of getting events and the state of the room at a given
point in the timeline.
{{events_ss_http_api}}
Inviting to a room
------------------
{{invites_ss_http_api}}
Leaving Rooms (Rejecting Invites)
---------------------------------
Normally homeservers can send appropriate ``m.room.member`` events to have users
leave the room, or to reject local invites. Remote invites from other homeservers
do not involve the server in the graph and therefore need another approach to
reject the invite. Joining the room and promptly leaving is not recommended as
clients and servers will interpret that as accepting the invite, then leaving the
room rather than rejecting the invite.
Similar to the `Joining Rooms`_ handshake, the server which wishes to leave the
room starts with sending a ``/make_leave`` request to a resident server. In the
case of rejecting invites, the resident server may be the server which sent the
invite. After receiving a template event from ``/make_leave``, the leaving server
signs the event and replaces the ``event_id`` with it's own. This is then sent to
the resident server via ``/send_leave``. The resident server will then send the
event to other servers in the room.
{{leaving_ss_http_api}}
Third-party invites
-------------------
@ -1295,6 +1145,9 @@ that are too long.
[[TODO(markjh) We might want to allow the server to omit the output of well
known hash functions like SHA-256 when none of the keys have been redacted]]
.. |/query/directory| replace:: ``/query/directory``
.. _/query/directory: #get-matrix-federation-v1-query-directory
.. _`Invitation storage`: ../identity_service/unstable.html#invitation-storage
.. _`Identity Service API`: ../identity_service/unstable.html
.. _`Client-Server API`: ../client_server/unstable.html#m-room-member