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eventauth_test.go
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/* Copyright 2016-2017 Vector Creations 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.
*/
package gomatrixserverlib
import (
"encoding/json"
"testing"
"github.com/matrix-org/gomatrixserverlib/spec"
"github.com/stretchr/testify/assert"
)
func stateNeededEquals(a, b StateNeeded) bool {
if a.Create != b.Create {
return false
}
if a.JoinRules != b.JoinRules {
return false
}
if a.PowerLevels != b.PowerLevels {
return false
}
if len(a.Member) != len(b.Member) {
return false
}
if len(a.ThirdPartyInvite) != len(b.ThirdPartyInvite) {
return false
}
for i := range a.Member {
if a.Member[i] != b.Member[i] {
return false
}
}
for i := range a.ThirdPartyInvite {
if a.ThirdPartyInvite[i] != b.ThirdPartyInvite[i] {
return false
}
}
return true
}
type testEventList []PDU
func (tel *testEventList) UnmarshalJSON(data []byte) error {
var eventJSONs []spec.RawJSON
var events []PDU
if err := json.Unmarshal(data, &eventJSONs); err != nil {
return err
}
for _, eventJSON := range eventJSONs {
event, err := MustGetRoomVersion(RoomVersionV1).NewEventFromTrustedJSON(eventJSON, false)
if err != nil {
return err
}
events = append(events, event)
}
*tel = events
return nil
}
func testStateNeededForAuth(t *testing.T, eventdata string, protoEvent *ProtoEvent, want StateNeeded) {
var events testEventList
if err := json.Unmarshal([]byte(eventdata), &events); err != nil {
panic(err)
}
got := StateNeededForAuth(events)
if !stateNeededEquals(got, want) {
t.Errorf("Testing StateNeededForAuth(%#v), wanted %#v got %#v", events, want, got)
}
if protoEvent != nil {
got, err := StateNeededForProtoEvent(protoEvent)
if !stateNeededEquals(got, want) {
t.Errorf("Testing StateNeededForEventBuilder(%#v), wanted %#v got %#v", events, want, got)
}
if err != nil {
panic(err)
}
}
}
func TestStateNeededForCreate(t *testing.T) {
// Create events don't need anything.
skey := ""
testStateNeededForAuth(t, `[{"type": "m.room.create", "room_id": "!r1:a"}]`, &ProtoEvent{
Type: "m.room.create",
StateKey: &skey,
}, StateNeeded{})
}
func TestStateNeededForMessage(t *testing.T) {
// Message events need the create event, the sender and the power_levels.
testStateNeededForAuth(t, `[{
"type": "m.room.message",
"sender": "@u1:a",
"room_id": "!r1:a"
}]`, &ProtoEvent{
Type: "m.room.message",
SenderID: "@u1:a",
}, StateNeeded{
Create: true,
PowerLevels: true,
Member: []string{"@u1:a"},
})
}
func TestStateNeededForAlias(t *testing.T) {
// Alias events need only the create event.
testStateNeededForAuth(t, `[{"type": "m.room.aliases", "room_id": "!r1:a"}]`, &ProtoEvent{
Type: "m.room.aliases",
}, StateNeeded{
Create: true,
})
}
func TestStateNeededForJoin(t *testing.T) {
skey := "@u1:a"
b := ProtoEvent{
Type: "m.room.member",
StateKey: &skey,
SenderID: "@u1:a",
}
if err := b.SetContent(newMemberContent("join", nil)); err != nil {
t.Fatal(err)
}
testStateNeededForAuth(t, `[{
"type": "m.room.member",
"state_key": "@u1:a",
"sender": "@u1:a",
"content": {"membership": "join"},
"room_id": "!r1:a"
}]`, &b, StateNeeded{
Create: true,
JoinRules: true,
PowerLevels: true,
Member: []string{"@u1:a"},
})
}
func TestStateNeededForInvite(t *testing.T) {
skey := "@u2:b"
b := ProtoEvent{
Type: "m.room.member",
StateKey: &skey,
SenderID: "@u1:a",
}
if err := b.SetContent(newMemberContent("invite", nil)); err != nil {
t.Fatal(err)
}
testStateNeededForAuth(t, `[{
"type": "m.room.member",
"state_key": "@u2:b",
"sender": "@u1:a",
"content": {"membership": "invite"},
"room_id": "!r1:a"
}]`, &b, StateNeeded{
Create: true,
PowerLevels: true,
JoinRules: true,
Member: []string{"@u1:a", "@u2:b"},
})
}
func TestStateNeededForInvite3PID(t *testing.T) {
skey := "@u2:b"
b := ProtoEvent{
Type: "m.room.member",
StateKey: &skey,
SenderID: "@u1:a",
}
if err := b.SetContent(newMemberContent("invite", &MemberThirdPartyInvite{
Signed: MemberThirdPartyInviteSigned{
Token: "my_token",
},
})); err != nil {
t.Fatal(err)
}
testStateNeededForAuth(t, `[{
"type": "m.room.member",
"state_key": "@u2:b",
"sender": "@u1:a",
"content": {
"membership": "invite",
"third_party_invite": {
"signed": {
"token": "my_token"
}
}
},
"room_id": "!r1:a"
}]`, &b, StateNeeded{
Create: true,
PowerLevels: true,
JoinRules: true,
Member: []string{"@u1:a", "@u2:b"},
ThirdPartyInvite: []string{"my_token"},
})
}
type testAuthEvents struct {
CreateJSON json.RawMessage `json:"create"`
JoinRulesJSON json.RawMessage `json:"join_rules"`
PowerLevelsJSON json.RawMessage `json:"power_levels"`
MemberJSON map[string]json.RawMessage `json:"member"`
ThirdPartyInviteJSON map[string]json.RawMessage `json:"third_party_invite"`
roomVersion RoomVersion
}
func (tae *testAuthEvents) Create() (PDU, error) {
if len(tae.CreateJSON) == 0 {
return nil, nil
}
event, err := MustGetRoomVersion(tae.roomVersion).NewEventFromTrustedJSON(tae.CreateJSON, false)
if err != nil {
return nil, err
}
return event, nil
}
func (tae *testAuthEvents) JoinRules() (PDU, error) {
if len(tae.JoinRulesJSON) == 0 {
return nil, nil
}
event, err := MustGetRoomVersion(tae.roomVersion).NewEventFromTrustedJSON(tae.JoinRulesJSON, false)
if err != nil {
return nil, err
}
return event, nil
}
func (tae *testAuthEvents) PowerLevels() (PDU, error) {
if len(tae.PowerLevelsJSON) == 0 {
return nil, nil
}
event, err := MustGetRoomVersion(tae.roomVersion).NewEventFromTrustedJSON(tae.PowerLevelsJSON, false)
if err != nil {
return nil, err
}
return event, nil
}
func (tae *testAuthEvents) Member(stateKey spec.SenderID) (PDU, error) {
if len(tae.MemberJSON[string(stateKey)]) == 0 {
return nil, nil
}
event, err := MustGetRoomVersion(tae.roomVersion).NewEventFromTrustedJSON(tae.MemberJSON[string(stateKey)], false)
if err != nil {
return nil, err
}
return event, nil
}
func (tae *testAuthEvents) ThirdPartyInvite(stateKey string) (PDU, error) {
if len(tae.ThirdPartyInviteJSON[stateKey]) == 0 {
return nil, nil
}
event, err := MustGetRoomVersion(tae.roomVersion).NewEventFromTrustedJSON(tae.ThirdPartyInviteJSON[stateKey], false)
if err != nil {
return nil, err
}
return event, nil
}
func (tae *testAuthEvents) Valid() bool {
return true
}
type testCase struct {
AuthEvents testAuthEvents `json:"auth_events"`
Allowed []json.RawMessage `json:"allowed"`
NotAllowed []json.RawMessage `json:"not_allowed"`
}
func testEventAllowed(t *testing.T, testCaseJSON string, roomVersion RoomVersion) {
t.Helper()
tc := testCase{
AuthEvents: testAuthEvents{
roomVersion: roomVersion,
},
}
if err := json.Unmarshal([]byte(testCaseJSON), &tc); err != nil {
panic(err)
}
for _, data := range tc.Allowed {
event, err := MustGetRoomVersion(roomVersion).NewEventFromTrustedJSON(data, false)
if err != nil {
panic(err)
}
if err = Allowed(event, &tc.AuthEvents, UserIDForSenderTest); err != nil {
t.Fatalf("Expected %q to be allowed but it was not: %q", string(data), err)
}
}
for _, data := range tc.NotAllowed {
event, err := MustGetRoomVersion(roomVersion).NewEventFromTrustedJSON(data, false)
if err != nil {
continue
}
if event != nil {
if err := Allowed(event, &tc.AuthEvents, UserIDForSenderTest); err == nil {
t.Fatalf("Expected %q to not be allowed but it was", string(data))
} else {
t.Logf("%#v", err)
}
}
}
}
func TestAllowedEmptyRoom(t *testing.T) {
// Test that only m.room.create events can be sent without auth events.
// TODO: Test the events that aren't m.room.create
testEventAllowed(t, `{
"auth_events": {},
"allowed": [{
"type": "m.room.create",
"state_key": "",
"sender": "@u1:a",
"room_id": "!r1:a",
"event_id": "$e1:a",
"content": {"creator": "@u1:a"}
}],
"not_allowed": [{
"type": "m.room.create",
"state_key": "",
"sender": "@u1:b",
"room_id": "!r1:a",
"event_id": "$e2:a",
"content": {"creator": "@u1:b"},
"unsigned": {
"not_allowed": "Sent by a different server than the one which made the room_id"
}
}, {
"type": "m.room.create",
"state_key": "",
"sender": "@u1:a",
"room_id": "!r1:a",
"event_id": "$e3:a",
"prev_events": [["$e1", {}]],
"content": {"creator": "@u1:a"},
"unsigned": {
"not_allowed": "Was not the first event in the room"
}
}, {
"type": "m.room.message",
"sender": "@u1:a",
"room_id": "!r1:a",
"event_id": "$e4:a",
"content": {"body": "Test"},
"unsigned": {
"not_allowed": "No create event"
}
}, {
"type": "m.room.member",
"state_key": "@u1:a",
"sender": "@u1:a",
"room_id": "!r1:a",
"event_id": "$e4:a",
"content": {"membership": "join"},
"unsigned": {
"not_allowed": "No create event"
}
}, {
"type": "m.room.create",
"state_key": "",
"sender": "not_a_user_id",
"room_id": "!r1:a",
"event_id": "$e5:a",
"content": {"creator": "@u1:a"},
"unsigned": {
"not_allowed": "Sender is not a valid user ID"
}
}, {
"type": "m.room.create",
"state_key": "",
"sender": "@u1:a",
"room_id": "not_a_room_id",
"event_id": "$e6:a",
"content": {"creator": "@u1:a"},
"unsigned": {
"not_allowed": "Room is not a valid room ID"
}
}, {
"type": "m.room.create",
"sender": "@u1:a",
"room_id": "!r1:a",
"event_id": "$e7:a",
"content": {"creator": "@u1:a"},
"unsigned": {
"not_allowed": "Missing state_key"
}
}, {
"type": "m.room.create",
"state_key": "not_empty",
"sender": "@u1:a",
"room_id": "!r1:a",
"event_id": "$e7:a",
"content": {"creator": "@u1:a"},
"unsigned": {
"not_allowed": "The state_key is not empty"
}
}]
}`, RoomVersionV1)
}
func TestAllowedFirstJoin(t *testing.T) {
testEventAllowed(t, `{
"auth_events": {
"create": {
"type": "m.room.create",
"state_key": "",
"sender": "@u1:a",
"room_id": "!r1:a",
"event_id": "$e1:a",
"content": {"creator": "@u1:a"}
}
},
"allowed": [{
"type": "m.room.member",
"state_key": "@u1:a",
"sender": "@u1:a",
"room_id": "!r1:a",
"event_id": "$e2:a",
"prev_events": [["$e1:a", {}]],
"content": {"membership": "join"}
}],
"not_allowed": [{
"type": "m.room.message",
"sender": "@u1:a",
"room_id": "!r1:a",
"event_id": "$e3:a",
"content": {"body": "test"},
"unsigned": {
"not_allowed": "Sender is not in the room"
}
}, {
"type": "m.room.member",
"state_key": "@u2:a",
"sender": "@u2:a",
"room_id": "!r1:a",
"event_id": "$e4:a",
"prev_events": [["$e1:a", {}]],
"content": {"membership": "join"},
"unsigned": {
"not_allowed": "Only the creator can join the room"
}
}, {
"type": "m.room.member",
"sender": "@u1:a",
"room_id": "!r1:a",
"event_id": "$e4:a",
"prev_events": [["$e1:a", {}]],
"content": {"membership": "join"},
"unsigned": {
"not_allowed": "Missing state_key"
}
}, {
"type": "m.room.member",
"state_key": "@u1:a",
"sender": "@u1:a",
"room_id": "!r1:a",
"event_id": "$e4:a",
"prev_events": [["$e2:a", {}]],
"content": {"membership": "join"},
"unsigned": {
"not_allowed": "The prev_event is not the create event"
}
}, {
"type": "m.room.member",
"state_key": "@u1:a",
"sender": "@u1:a",
"room_id": "!r1:a",
"event_id": "$e4:a",
"content": {"membership": "join"},
"unsigned": {
"not_allowed": "There are no prev_events"
}
}, {
"type": "m.room.member",
"state_key": "@u1:a",
"sender": "@u1:a",
"room_id": "!r1:a",
"event_id": "$e4:a",
"content": {"membership": "join"},
"prev_events": [["$e1:a", {}], ["$e2:a", {}]],
"unsigned": {
"not_allowed": "There are too many prev_events"
}
}, {
"type": "m.room.member",
"state_key": "@u1:a",
"sender": "@u2:a",
"room_id": "!r1:a",
"event_id": "$e4:a",
"content": {"membership": "join"},
"prev_events": [["$e1:a", {}]],
"unsigned": {
"not_allowed": "The sender doesn't match the joining user"
}
}, {
"type": "m.room.member",
"state_key": "@u1:a",
"sender": "@u1:a",
"room_id": "!r1:a",
"event_id": "$e4:a",
"content": {"membership": "invite"},
"prev_events": [["$e1:a", {}]],
"unsigned": {
"not_allowed": "The membership is not 'join'"
}
}]
}`, RoomVersionV1)
}
func TestAllowedWithNoPowerLevels(t *testing.T) {
testEventAllowed(t, `{
"auth_events": {
"create": {
"type": "m.room.create",
"state_key": "",
"sender": "@u1:a",
"room_id": "!r1:a",
"event_id": "$e1:a",
"content": {"creator": "@u1:a"}
},
"member": {
"@u1:a": {
"type": "m.room.member",
"sender": "@u1:a",
"room_id": "!r1:a",
"state_key": "@u1:a",
"event_id": "$e2:a",
"content": {"membership": "join"}
}
}
},
"allowed": [{
"type": "m.room.message",
"sender": "@u1:a",
"room_id": "!r1:a",
"event_id": "$e3:a",
"content": {"body": "Test"}
}],
"not_allowed": [{
"type": "m.room.message",
"sender": "@u2:a",
"room_id": "!r1:a",
"event_id": "$e4:a",
"content": {"body": "Test"},
"unsigned": {
"not_allowed": "Sender is not in room"
}
}]
}`, RoomVersionV1)
}
func TestAllowedInviteFrom3PID(t *testing.T) {
testEventAllowed(t, `{
"auth_events": {
"create": {
"type": "m.room.create",
"state_key": "",
"sender": "@u1:a",
"room_id": "!r1:a",
"event_id": "$e1:a",
"content": {"creator": "@u1:a"}
},
"member": {
"@u1:a": {
"type": "m.room.member",
"sender": "@u1:a",
"room_id": "!r1:a",
"state_key": "@u1:a",
"event_id": "$e2:a",
"content": {"membership": "join"}
}
},
"third_party_invite": {
"my_token": {
"type": "m.room.third_party_invite",
"sender": "@u1:a",
"room_id": "!r1:a",
"state_key": "my_token",
"event_id": "$e3:a",
"content": {
"display_name": "foo...@bar...",
"public_key": "pubkey",
"key_validity_url": "https://example.tld/isvalid",
"public_keys": [
{
"public_key": "mrV51jApZKahGjfMhlevp+QtSSTDKCLaLVCzYc4HELY",
"key_validity_url": "https://example.tld/isvalid"
}
]
}
}
}
},
"allowed": [{
"type": "m.room.member",
"sender": "@u1:a",
"room_id": "!r1:a",
"state_key": "@u2:a",
"event_id": "$e4:a",
"content": {
"membership": "invite",
"third_party_invite": {
"display_name": "foo...@bar...",
"signed": {
"token": "my_token",
"mxid": "@u2:a",
"signatures": {
"example.tld": {
"ed25519:0": "CibGFS0vX93quJFppsQbYQKJFIwxiYEK87lNmekS/fdetUMXPdR2wwNDd09J1jJ28GCH3GogUTuFDB1ScPFxBg"
}
}
}
}
}
}],
"not_allowed": [{
"type": "m.room.member",
"sender": "@u1:a",
"room_id": "!r1:a",
"state_key": "@u2:a",
"event_id": "$e4:a",
"content": {
"membership": "invite",
"third_party_invite": {
"display_name": "foo...@bar...",
"signed": {
"token": "my_token",
"mxid": "@u2:a",
"signatures": {
"example.tld": {
"ed25519:0": "some_signature"
}
}
}
}
},
"unsigned": {
"not_allowed": "Bad signature"
}
}, {
"type": "m.room.member",
"sender": "@u1:a",
"room_id": "!r1:a",
"state_key": "@u2:a",
"event_id": "$e5:a",
"content": {
"membership": "invite",
"third_party_invite": {
"display_name": "foo...@bar...",
"signed": {
"token": "my_token",
"mxid": "@u3:a",
"signatures": {
"example.tld": {
"ed25519:0": "CibGFS0vX93quJFppsQbYQKJFIwxiYEK87lNmekS/fdetUMXPdR2wwNDd09J1jJ28GCH3GogUTuFDB1ScPFxBg"
}
}
}
}
},
"unsigned": {
"not_allowed": "MXID doesn't match state key"
}
}, {
"type": "m.room.member",
"sender": "@u1:a",
"room_id": "!r1:a",
"state_key": "@u2:a",
"event_id": "$e6:a",
"content": {
"membership": "invite",
"third_party_invite": {
"display_name": "foo...@bar...",
"signed": {
"token": "my_other_token",
"mxid": "@u2:a",
"signatures": {
"example.tld": {
"ed25519:0": "CibGFS0vX93quJFppsQbYQKJFIwxiYEK87lNmekS/fdetUMXPdR2wwNDd09J1jJ28GCH3GogUTuFDB1ScPFxBg"
}
}
}
}
},
"unsigned": {
"not_allowed": "Token doesn't refer to a known third-party invite"
}
}]
}`, RoomVersionV1)
}
func TestAllowedNoFederation(t *testing.T) {
testEventAllowed(t, `{
"auth_events": {
"create": {
"type": "m.room.create",
"sender": "@u1:a",
"room_id": "!r1:a",
"event_id": "$e1:a",
"content": {
"creator": "@u1:a",
"m.federate": false
}
},
"member": {
"@u1:a": {
"type": "m.room.member",
"sender": "@u1:a",
"room_id": "!r1:a",
"state_key": "@u1:a",
"event_id": "$e2:a",
"content": {"membership": "join"}
}
}
},
"allowed": [{
"type": "m.room.message",
"sender": "@u1:a",
"room_id": "!r1:a",
"event_id": "$e3:a",
"content": {"body": "Test"}
}],
"not_allowed": [{
"type": "m.room.message",
"sender": "@u1:b",
"room_id": "!r1:a",
"event_id": "$e4:a",
"content": {"body": "Test"},
"unsigned": {
"not_allowed": "Sender is from a different server."
}
}]
}`, RoomVersionV1)
}
func TestAllowedWithPowerLevels(t *testing.T) {
testEventAllowed(t, `{
"auth_events": {
"create": {
"type": "m.room.create",
"sender": "@u1:a",
"room_id": "!r1:a",
"event_id": "$e1:a",
"content": {"creator": "@u1:a"}
},
"member": {
"@u1:a": {
"type": "m.room.member",
"sender": "@u1:a",
"room_id": "!r1:a",
"state_key": "@u1:a",
"event_id": "$e2:a",
"content": {"membership": "join"}
},
"@u2:a": {
"type": "m.room.member",
"sender": "@u2:a",
"room_id": "!r1:a",
"state_key": "@u2:a",
"event_id": "$e3:a",
"content": {"membership": "join"}
},
"@u3:b": {
"type": "m.room.member",
"sender": "@u3:b",
"room_id": "!r1:a",
"state_key": "@u3:b",
"event_id": "$e4:a",
"content": {"membership": "join"}
}
},
"power_levels": {
"type": "m.room.power_levels",
"sender": "@u1:a",
"room_id": "!r1:a",
"event_id": "$e5:a",
"content": {
"users": {
"@u1:a": 100,
"@u2:a": 50
},
"users_default": 0,
"events": {
"m.room.join_rules": 100
},
"state_default": 50,
"events_default": 0
}
}
},
"allowed": [{
"type": "m.room.message",
"sender": "@u1:a",
"room_id": "!r1:a",
"event_id": "$e6:a",
"content": {"body": "Test from @u1:a"}
}, {
"type": "m.room.message",
"sender": "@u2:a",
"room_id": "!r1:a",
"event_id": "$e7:a",
"content": {"body": "Test from @u2:a"}
}, {
"type": "m.room.message",
"sender": "@u3:b",
"room_id": "!r1:a",
"event_id": "$e8:a",
"content": {"body": "Test from @u3:b"}
},{
"type": "m.room.name",
"state_key": "",
"sender": "@u1:a",
"room_id": "!r1:a",
"event_id": "$e9:a",
"content": {"name": "Name set by @u1:a"}
}, {
"type": "m.room.name",
"state_key": "",
"sender": "@u2:a",
"room_id": "!r1:a",
"event_id": "$e10:a",
"content": {"name": "Name set by @u2:a"}
}, {
"type": "m.room.join_rules",
"state_key": "",
"sender": "@u1:a",
"room_id": "!r1:a",
"event_id": "$e11:a",
"content": {"join_rule": "public"}
}, {
"type": "my.custom.state",
"state_key": "@u2:a",
"sender": "@u2:a",
"room_id": "!r1:a",
"event_id": "@e12:a",
"content": {}
}],
"not_allowed": [{
"type": "m.room.name",
"state_key": "",
"sender": "@u3:b",
"room_id": "!r1:a",
"event_id": "$e13:a",
"content": {"name": "Name set by @u3:b"},
"unsigned": {
"not_allowed": "User @u3:b's level is too low to send a state event"
}
}, {
"type": "m.room.join_rules",
"sender": "@u2:a",
"room_id": "!r1:a",
"event_id": "$e14:a",
"content": {"name": "Name set by @u3:b"},
"unsigned": {
"not_allowed": "User @u2:a's level is too low to send m.room.join_rules"
}
}, {
"type": "m.room.message",
"sender": "@u4:a",
"room_id": "!r1:a",
"event_id": "$e15:a",
"content": {"Body": "Test from @u4:a"},
"unsigned": {
"not_allowed": "User @u4:a is not in the room"
}
}, {
"type": "m.room.message",
"sender": "@u1:a",
"room_id": "!r2:a",
"event_id": "$e16:a",
"content": {"body": "Test from @u4:a"},
"unsigned": {
"not_allowed": "Sent from a different room to the create event"
}
}, {
"type": "my.custom.state",
"state_key": "@u2:a",
"sender": "@u1:a",
"room_id": "!r1:a",
"event_id": "@e17:a",
"content": {},
"unsigned": {
"not_allowed": "State key starts with '@' and is for a different user"
}
}]
}`, RoomVersionV1)
}
func TestRedactAllowed(t *testing.T) {
// Test if redacts are allowed correctly in a room with a power level event.
testEventAllowed(t, `{
"auth_events": {
"create": {
"type": "m.room.create",
"sender": "@u1:a",
"room_id": "!r1:a",
"event_id": "$e1:a",
"content": {"creator": "@u1:a"}
},
"member": {
"@u1:a": {
"type": "m.room.member",
"sender": "@u1:a",
"room_id": "!r1:a",
"state_key": "@u1:a",
"event_id": "$e2:a",
"content": {"membership": "join"}
},
"@u2:a": {
"type": "m.room.member",
"sender": "@u2:a",
"room_id": "!r1:a",
"state_key": "@u2:a",
"event_id": "$e3:a",
"content": {"membership": "join"}
},
"@u1:b": {
"type": "m.room.member",
"sender": "@u1:b",
"room_id": "!r1:a",
"state_key": "@u1:b",
"event_id": "$e4:a",
"content": {"membership": "join"}
}
},
"power_levels": {
"type": "m.room.power_levels",
"state_key": "",
"sender": "@u1:a",
"room_id": "!r1:a",
"event_id": "$e5:a",
"content": {
"users": {
"@u1:a": 100
},
"redact": 100
}
}
},
"allowed": [{
"type": "m.room.redaction",
"sender": "@u1:b",
"room_id": "!r1:a",
"redacts": "$event_sent_by_b:b",
"event_id": "$e6:b",
"content": {"reason": ""}
}, {
"type": "m.room.redaction",
"sender": "@u2:a",
"room_id": "!r1:a",
"redacts": "$event_sent_by_a:a",
"event_id": "$e7:a",
"content": {"reason": ""}
}, {
"type": "m.room.redaction",
"sender": "@u1:a",
"room_id": "!r1:a",
"redacts": "$event_sent_by_b:b",
"event_id": "$e8:a",
"content": {"reason": ""}
}],
"not_allowed": [{
"type": "m.room.redaction",
"sender": "@u2:a",
"room_id": "!r1:a",
"redacts": "$event_sent_by_b:b",
"event_id": "$e9:a",
"content": {"reason": ""},
"unsigned": {
"not_allowed": "User power level is too low and event is from different server"
}
}, {
"type": "m.room.redaction",
"sender": "@u1:c",
"room_id": "!r1:a",
"redacts": "$event_sent_by_c:c",
"event_id": "$e10:a",
"content": {"reason": ""},
"unsigned": {
"not_allowed": "User is not in the room"
}
}, {
"type": "m.room.redaction",
"sender": "@u1:a",