mirror of
https://github.com/hoernschen/dendrite.git
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gb vendor fetch github.com/matrix-org/gomatrixserverlib/
This commit is contained in:
Mark Haines
parent
5b5c2091bf
commit
a45a824f41
28 changed files with 8180 additions and 1 deletions
15
vendor/manifest
vendored
15
vendor/manifest
vendored
|
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@ -71,6 +71,12 @@
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"revision": "a6657b2386e9b8be76484c08711b02c7cf867ead",
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"branch": "master"
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},
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{
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"importpath": "github.com/matrix-org/gomatrixserverlib",
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"repository": "https://github.com/matrix-org/gomatrixserverlib",
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"revision": "48ee56a33d195dc412dd919a0e81af70c9aaf4a3",
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"branch": "master"
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},
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{
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"importpath": "github.com/matrix-org/util",
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"repository": "https://github.com/matrix-org/util",
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@ -149,6 +155,13 @@
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"revision": "61e43dc76f7ee59a82bdf3d71033dc12bea4c77d",
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"branch": "master"
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},
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{
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"importpath": "golang.org/x/crypto/ed25519",
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"repository": "https://go.googlesource.com/crypto",
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"revision": "77014cf7f9bde4925afeed52b7bf676d5f5b4285",
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"branch": "master",
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"path": "/ed25519"
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},
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{
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"importpath": "golang.org/x/net/context",
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"repository": "https://go.googlesource.com/net",
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@ -175,4 +188,4 @@
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"branch": "master"
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}
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]
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}
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}
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5
vendor/src/github.com/matrix-org/gomatrixserverlib/README.md
vendored
Normal file
5
vendor/src/github.com/matrix-org/gomatrixserverlib/README.md
vendored
Normal file
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@ -0,0 +1,5 @@
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gomatrixserverlib
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=================
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[](https://godoc.org/github.com/matrix-org/gomatrixserverlib)
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Go library for common functions needed by matrix servers.
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48
vendor/src/github.com/matrix-org/gomatrixserverlib/base64.go
vendored
Normal file
48
vendor/src/github.com/matrix-org/gomatrixserverlib/base64.go
vendored
Normal file
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@ -0,0 +1,48 @@
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/* Copyright 2016-2017 Vector Creations Ltd
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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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*/
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package gomatrixserverlib
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import (
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"encoding/base64"
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"encoding/json"
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)
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// A Base64String is a string of bytes that are base64 encoded when used in JSON.
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// The bytes encoded using base64 when marshalled as JSON.
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// When the bytes are unmarshalled from JSON they are decoded from base64.
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type Base64String []byte
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// MarshalJSON encodes the bytes as base64 and then encodes the base64 as a JSON string.
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// This takes a value receiver so that maps and slices of Base64String encode correctly.
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func (b64 Base64String) MarshalJSON() ([]byte, error) {
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// This could be made more efficient by using base64.RawStdEncoding.Encode
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// to write the base64 directly to the JSON. We don't need to JSON escape
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// any of the characters used in base64.
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return json.Marshal(base64.RawStdEncoding.EncodeToString(b64))
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}
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// UnmarshalJSON decodes a JSON string and then decodes the resulting base64.
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// This takes a pointer receiver because it needs to write the result of decoding.
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func (b64 *Base64String) UnmarshalJSON(raw []byte) (err error) {
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// We could add a fast path that used base64.RawStdEncoding.Decode
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// directly on the raw JSON if the JSON didn't contain any escapes.
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var str string
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if err = json.Unmarshal(raw, &str); err != nil {
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return
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}
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*b64, err = base64.RawStdEncoding.DecodeString(str)
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return
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}
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82
vendor/src/github.com/matrix-org/gomatrixserverlib/base64_test.go
vendored
Normal file
82
vendor/src/github.com/matrix-org/gomatrixserverlib/base64_test.go
vendored
Normal file
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@ -0,0 +1,82 @@
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/* Copyright 2016-2017 Vector Creations Ltd
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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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* 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
|
||||
* 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.
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*/
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package gomatrixserverlib
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import (
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"encoding/json"
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"testing"
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)
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func TestMarshalBase64(t *testing.T) {
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input := Base64String("this\xffis\xffa\xfftest")
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want := `"dGhpc/9pc/9h/3Rlc3Q"`
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got, err := json.Marshal(input)
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if err != nil {
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t.Fatal(err)
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}
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if string(got) != want {
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t.Fatalf("json.Marshal(Base64String(%q)): wanted %q got %q", string(input), want, string(got))
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}
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}
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func TestUnmarshalBase64(t *testing.T) {
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input := []byte(`"dGhpc/9pc/9h/3Rlc3Q"`)
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want := "this\xffis\xffa\xfftest"
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var got Base64String
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err := json.Unmarshal(input, &got)
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if err != nil {
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t.Fatal(err)
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}
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if string(got) != want {
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t.Fatalf("json.Unmarshal(%q): wanted %q got %q", string(input), want, string(got))
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}
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}
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func TestMarshalBase64Struct(t *testing.T) {
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input := struct{ Value Base64String }{Base64String("this\xffis\xffa\xfftest")}
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want := `{"Value":"dGhpc/9pc/9h/3Rlc3Q"}`
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got, err := json.Marshal(input)
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if err != nil {
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t.Fatal(err)
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}
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if string(got) != want {
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t.Fatalf("json.Marshal(%v): wanted %q got %q", input, want, string(got))
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}
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}
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func TestMarshalBase64Map(t *testing.T) {
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input := map[string]Base64String{"Value": Base64String("this\xffis\xffa\xfftest")}
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want := `{"Value":"dGhpc/9pc/9h/3Rlc3Q"}`
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got, err := json.Marshal(input)
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if err != nil {
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t.Fatal(err)
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}
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if string(got) != want {
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t.Fatalf("json.Marshal(%v): wanted %q got %q", input, want, string(got))
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}
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}
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func TestMarshalBase64Slice(t *testing.T) {
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input := []Base64String{Base64String("this\xffis\xffa\xfftest")}
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want := `["dGhpc/9pc/9h/3Rlc3Q"]`
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got, err := json.Marshal(input)
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if err != nil {
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t.Fatal(err)
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}
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if string(got) != want {
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t.Fatalf("json.Marshal(%v): wanted %q got %q", input, want, string(got))
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}
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}
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143
vendor/src/github.com/matrix-org/gomatrixserverlib/client.go
vendored
Normal file
143
vendor/src/github.com/matrix-org/gomatrixserverlib/client.go
vendored
Normal file
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@ -0,0 +1,143 @@
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/* Copyright 2016-2017 Vector Creations Ltd
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*
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* 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.
|
||||
*/
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package gomatrixserverlib
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import (
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"crypto/tls"
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"encoding/json"
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"fmt"
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"io/ioutil"
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"net"
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"net/http"
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"net/url"
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"strings"
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)
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// A Client makes request to the federation listeners of matrix
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// homeservers
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type Client struct {
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client http.Client
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}
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// UserInfo represents information about a user.
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type UserInfo struct {
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Sub string `json:"sub"`
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}
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// NewClient makes a new Client
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func NewClient() *Client {
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// TODO: Verify ceritificates
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tripper := federationTripper{
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transport: &http.Transport{
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// Set our own DialTLS function to avoid the default net/http SNI.
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// By default net/http and crypto/tls set the SNI to the target host.
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// By avoiding the default implementation we can keep the ServerName
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// as the empty string so that crypto/tls doesn't add SNI.
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DialTLS: func(network, addr string) (net.Conn, error) {
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rawconn, err := net.Dial(network, addr)
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if err != nil {
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return nil, err
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}
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// Wrap a raw connection ourselves since tls.Dial defaults the SNI
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conn := tls.Client(rawconn, &tls.Config{
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ServerName: "",
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// TODO: We should be checking that the TLS certificate we see here matches
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// one of the allowed SHA-256 fingerprints for the server.
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InsecureSkipVerify: true,
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})
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if err := conn.Handshake(); err != nil {
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return nil, err
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||||
}
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return conn, nil
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},
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},
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}
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return &Client{
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client: http.Client{Transport: &tripper},
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}
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}
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type federationTripper struct {
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transport http.RoundTripper
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}
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func makeHTTPSURL(u *url.URL, addr string) (httpsURL url.URL) {
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httpsURL = *u
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httpsURL.Scheme = "https"
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httpsURL.Host = addr
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return
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}
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func (f *federationTripper) RoundTrip(r *http.Request) (*http.Response, error) {
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host := r.URL.Host
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dnsResult, err := LookupServer(host)
|
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if err != nil {
|
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return nil, err
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||||
}
|
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var resp *http.Response
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||||
for _, addr := range dnsResult.Addrs {
|
||||
u := makeHTTPSURL(r.URL, addr)
|
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r.URL = &u
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resp, err = f.transport.RoundTrip(r)
|
||||
if err == nil {
|
||||
return resp, nil
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||||
}
|
||||
}
|
||||
return nil, fmt.Errorf("no address found for matrix host %v", host)
|
||||
}
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||||
|
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// LookupUserInfo gets information about a user from a given matrix homeserver
|
||||
// using a bearer access token.
|
||||
func (fc *Client) LookupUserInfo(matrixServer, token string) (u UserInfo, err error) {
|
||||
url := url.URL{
|
||||
Scheme: "matrix",
|
||||
Host: matrixServer,
|
||||
Path: "/_matrix/federation/v1/openid/userinfo",
|
||||
RawQuery: url.Values{"access_token": []string{token}}.Encode(),
|
||||
}
|
||||
|
||||
var response *http.Response
|
||||
response, err = fc.client.Get(url.String())
|
||||
if response != nil {
|
||||
defer response.Body.Close()
|
||||
}
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
if response.StatusCode < 200 || response.StatusCode >= 300 {
|
||||
var errorOutput []byte
|
||||
errorOutput, err = ioutil.ReadAll(response.Body)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
err = fmt.Errorf("HTTP %d : %s", response.StatusCode, errorOutput)
|
||||
return
|
||||
}
|
||||
|
||||
err = json.NewDecoder(response.Body).Decode(&u)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
userParts := strings.SplitN(u.Sub, ":", 2)
|
||||
if len(userParts) != 2 || userParts[1] != matrixServer {
|
||||
err = fmt.Errorf("userID doesn't match server name '%v' != '%v'", u.Sub, matrixServer)
|
||||
return
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
360
vendor/src/github.com/matrix-org/gomatrixserverlib/event.go
vendored
Normal file
360
vendor/src/github.com/matrix-org/gomatrixserverlib/event.go
vendored
Normal file
|
|
@ -0,0 +1,360 @@
|
|||
/* 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"
|
||||
"fmt"
|
||||
"golang.org/x/crypto/ed25519"
|
||||
"time"
|
||||
)
|
||||
|
||||
// An EventReference is a reference to a matrix event.
|
||||
type EventReference struct {
|
||||
// The event ID of the event.
|
||||
EventID string
|
||||
// The sha256 of the redacted event.
|
||||
EventSHA256 Base64String
|
||||
}
|
||||
|
||||
// An EventBuilder is used to build a new event.
|
||||
type EventBuilder struct {
|
||||
// The user ID of the user sending the event.
|
||||
Sender string `json:"sender"`
|
||||
// The room ID of the room this event is in.
|
||||
RoomID string `json:"room_id"`
|
||||
// The type of the event.
|
||||
Type string `json:"type"`
|
||||
// The state_key of the event if the event is a state event or nil if the event is not a state event.
|
||||
StateKey *string `json:"state_key,omitempty"`
|
||||
// The events that immediately preceeded this event in the room history.
|
||||
PrevEvents []EventReference `json:"prev_events"`
|
||||
// The events needed to authenticate this event.
|
||||
AuthEvents []EventReference `json:"auth_events"`
|
||||
// The event ID of the event being redacted if this event is a "m.room.redaction".
|
||||
Redacts string `json:"redacts,omitempty"`
|
||||
// The depth of the event, This should be one greater than the maximum depth of the previous events.
|
||||
// The create event has a depth of 1.
|
||||
Depth int64 `json:"depth"`
|
||||
content []byte
|
||||
unsigned []byte
|
||||
}
|
||||
|
||||
// SetContent sets the JSON content key of the event.
|
||||
func (eb *EventBuilder) SetContent(content interface{}) (err error) {
|
||||
eb.content, err = json.Marshal(content)
|
||||
return
|
||||
}
|
||||
|
||||
// SetUnsigned sets the JSON unsigned key of the event.
|
||||
func (eb *EventBuilder) SetUnsigned(unsigned interface{}) (err error) {
|
||||
eb.unsigned, err = json.Marshal(unsigned)
|
||||
return
|
||||
}
|
||||
|
||||
// An Event is a matrix event.
|
||||
// The event should always contain valid JSON.
|
||||
// If the event content hash is invalid then the event is redacted.
|
||||
// Redacted events contain only the fields covered by the event signature.
|
||||
type Event struct {
|
||||
redacted bool
|
||||
eventJSON []byte
|
||||
fields eventFields
|
||||
}
|
||||
|
||||
type eventFields struct {
|
||||
RoomID string `json:"room_id"`
|
||||
EventID string `json:"event_id"`
|
||||
Sender string `json:"sender"`
|
||||
Type string `json:"type"`
|
||||
StateKey *string `json:"state_key"`
|
||||
Content rawJSON `json:"content"`
|
||||
PrevEvents []EventReference `json:"prev_events"`
|
||||
AuthEvents []EventReference `json:"auth_events"`
|
||||
Redacts string `json:"redacts"`
|
||||
Depth int64 `json:"depth"`
|
||||
}
|
||||
|
||||
var emptyEventReferenceList = []EventReference{}
|
||||
|
||||
// Build a new Event.
|
||||
// This is used when a local event is created on this server.
|
||||
// Call this after filling out the necessary fields.
|
||||
// This can be called mutliple times on the same builder.
|
||||
// A different event ID must be supplied each time this is called.
|
||||
func (eb *EventBuilder) Build(eventID string, now time.Time, origin, keyID string, privateKey ed25519.PrivateKey) (result Event, err error) {
|
||||
var event struct {
|
||||
EventBuilder
|
||||
EventID string `json:"event_id"`
|
||||
RawContent rawJSON `json:"content"`
|
||||
RawUnsigned rawJSON `json:"unsigned"`
|
||||
OriginServerTS int64 `json:"origin_server_ts"`
|
||||
Origin string `json:"origin"`
|
||||
}
|
||||
event.EventBuilder = *eb
|
||||
if event.PrevEvents == nil {
|
||||
event.PrevEvents = emptyEventReferenceList
|
||||
}
|
||||
if event.AuthEvents == nil {
|
||||
event.AuthEvents = emptyEventReferenceList
|
||||
}
|
||||
event.RawContent = rawJSON(event.content)
|
||||
event.RawUnsigned = rawJSON(event.unsigned)
|
||||
event.OriginServerTS = now.UnixNano() / 1000000
|
||||
event.Origin = origin
|
||||
event.EventID = eventID
|
||||
|
||||
// TODO: Check size limits.
|
||||
|
||||
var eventJSON []byte
|
||||
|
||||
if eventJSON, err = json.Marshal(&event); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
if eventJSON, err = addContentHashesToEvent(eventJSON); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
if eventJSON, err = signEvent(origin, keyID, privateKey, eventJSON); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
if eventJSON, err = CanonicalJSON(eventJSON); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
result.eventJSON = eventJSON
|
||||
err = json.Unmarshal(eventJSON, &result.fields)
|
||||
return
|
||||
}
|
||||
|
||||
// NewEventFromUntrustedJSON loads a new event from some JSON that may be invalid.
|
||||
// This checks that the event is valid JSON.
|
||||
// It also checks the content hashes to ensure the event has not been tampered with.
|
||||
// This should be used when receiving new events from remote servers.
|
||||
func NewEventFromUntrustedJSON(eventJSON []byte) (result Event, err error) {
|
||||
var event map[string]rawJSON
|
||||
if err = json.Unmarshal(eventJSON, &event); err != nil {
|
||||
return
|
||||
}
|
||||
// Synapse removes these keys from events in case a server accidentally added them.
|
||||
// https://github.com/matrix-org/synapse/blob/v0.18.5/synapse/crypto/event_signing.py#L57-L62
|
||||
delete(event, "outlier")
|
||||
delete(event, "destinations")
|
||||
delete(event, "age_ts")
|
||||
|
||||
// TODO: Check that the event fields are correctly defined.
|
||||
// TODO: Check size limits.
|
||||
|
||||
if eventJSON, err = json.Marshal(event); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
if err = checkEventContentHash(eventJSON); err != nil {
|
||||
result.redacted = true
|
||||
// If the content hash doesn't match then we have to discard all non-essential fields
|
||||
// because they've been tampered with.
|
||||
if eventJSON, err = redactEvent(eventJSON); err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
if eventJSON, err = CanonicalJSON(eventJSON); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
result.eventJSON = eventJSON
|
||||
err = json.Unmarshal(eventJSON, &result.fields)
|
||||
return
|
||||
}
|
||||
|
||||
// NewEventFromTrustedJSON loads a new event from some JSON that must be valid.
|
||||
// This will be more efficient than NewEventFromUntrustedJSON since it can skip cryptographic checks.
|
||||
// This can be used when loading matrix events from a local database.
|
||||
func NewEventFromTrustedJSON(eventJSON []byte, redacted bool) (result Event, err error) {
|
||||
result.redacted = redacted
|
||||
result.eventJSON = eventJSON
|
||||
err = json.Unmarshal(eventJSON, &result.fields)
|
||||
return
|
||||
}
|
||||
|
||||
// Redacted returns whether the event is redacted.
|
||||
func (e Event) Redacted() bool { return e.redacted }
|
||||
|
||||
// JSON returns the JSON bytes for the event.
|
||||
func (e Event) JSON() []byte { return e.eventJSON }
|
||||
|
||||
// Redact returns a redacted copy of the event.
|
||||
func (e Event) Redact() Event {
|
||||
if e.redacted {
|
||||
return e
|
||||
}
|
||||
eventJSON, err := redactEvent(e.eventJSON)
|
||||
if err != nil {
|
||||
// This is unreachable for events created with EventBuilder.Build or NewEventFromUntrustedJSON
|
||||
panic(fmt.Errorf("gomatrixserverlib: invalid event %v", err))
|
||||
}
|
||||
if eventJSON, err = CanonicalJSON(eventJSON); err != nil {
|
||||
// This is unreachable for events created with EventBuilder.Build or NewEventFromUntrustedJSON
|
||||
panic(fmt.Errorf("gomatrixserverlib: invalid event %v", err))
|
||||
}
|
||||
return Event{
|
||||
redacted: true,
|
||||
eventJSON: eventJSON,
|
||||
}
|
||||
}
|
||||
|
||||
// EventReference returns an EventReference for the event.
|
||||
// The reference can be used to refer to this event from other events.
|
||||
func (e Event) EventReference() EventReference {
|
||||
reference, err := referenceOfEvent(e.eventJSON)
|
||||
if err != nil {
|
||||
// This is unreachable for events created with EventBuilder.Build or NewEventFromUntrustedJSON
|
||||
// This can be reached if NewEventFromTrustedJSON is given JSON from an untrusted source.
|
||||
panic(fmt.Errorf("gomatrixserverlib: invalid event %v (%q)", err, string(e.eventJSON)))
|
||||
}
|
||||
return reference
|
||||
}
|
||||
|
||||
// Sign returns a copy of the event with an additional signature.
|
||||
func (e Event) Sign(signingName, keyID string, privateKey ed25519.PrivateKey) Event {
|
||||
eventJSON, err := signEvent(signingName, keyID, privateKey, e.eventJSON)
|
||||
if err != nil {
|
||||
// This is unreachable for events created with EventBuilder.Build or NewEventFromUntrustedJSON
|
||||
panic(fmt.Errorf("gomatrixserverlib: invalid event %v (%q)", err, string(e.eventJSON)))
|
||||
}
|
||||
if eventJSON, err = CanonicalJSON(eventJSON); err != nil {
|
||||
// This is unreachable for events created with EventBuilder.Build or NewEventFromUntrustedJSON
|
||||
panic(fmt.Errorf("gomatrixserverlib: invalid event %v (%q)", err, string(e.eventJSON)))
|
||||
}
|
||||
return Event{
|
||||
redacted: e.redacted,
|
||||
eventJSON: eventJSON,
|
||||
}
|
||||
}
|
||||
|
||||
// KeyIDs returns a list of key IDs that the named entity has signed the event with.
|
||||
func (e Event) KeyIDs(signingName string) []string {
|
||||
var event struct {
|
||||
Signatures map[string]map[string]rawJSON `json:"signatures"`
|
||||
}
|
||||
if err := json.Unmarshal(e.eventJSON, &event); err != nil {
|
||||
// This should unreachable for events created with EventBuilder.Build or NewEventFromUntrustedJSON
|
||||
panic(fmt.Errorf("gomatrixserverlib: invalid event %v", err))
|
||||
}
|
||||
var keyIDs []string
|
||||
for keyID := range event.Signatures[signingName] {
|
||||
keyIDs = append(keyIDs, keyID)
|
||||
}
|
||||
return keyIDs
|
||||
}
|
||||
|
||||
// Verify checks a ed25519 signature
|
||||
func (e Event) Verify(signingName, keyID string, publicKey ed25519.PublicKey) error {
|
||||
return verifyEventSignature(signingName, keyID, publicKey, e.eventJSON)
|
||||
}
|
||||
|
||||
// StateKey returns the "state_key" of the event, or the nil if the event is not a state event.
|
||||
func (e Event) StateKey() *string {
|
||||
return e.fields.StateKey
|
||||
}
|
||||
|
||||
// StateKeyEquals returns true if the event is a state event and the "state_key" matches.
|
||||
func (e Event) StateKeyEquals(stateKey string) bool {
|
||||
if e.fields.StateKey == nil {
|
||||
return false
|
||||
}
|
||||
return *e.fields.StateKey == stateKey
|
||||
}
|
||||
|
||||
// EventID returns the event ID of the event.
|
||||
func (e Event) EventID() string {
|
||||
return e.fields.EventID
|
||||
}
|
||||
|
||||
// Sender returns the user ID of the sender of the event.
|
||||
func (e Event) Sender() string {
|
||||
return e.fields.Sender
|
||||
}
|
||||
|
||||
// Type returns the type of the event.
|
||||
func (e Event) Type() string {
|
||||
return e.fields.Type
|
||||
}
|
||||
|
||||
// Content returns the content JSON of the event.
|
||||
func (e Event) Content() []byte {
|
||||
return []byte(e.fields.Content)
|
||||
}
|
||||
|
||||
// PrevEvents returns references to the direct ancestors of the event.
|
||||
func (e Event) PrevEvents() []EventReference {
|
||||
return e.fields.PrevEvents
|
||||
}
|
||||
|
||||
// AuthEvents returns references to the events needed to auth the event.
|
||||
func (e Event) AuthEvents() []EventReference {
|
||||
return e.fields.AuthEvents
|
||||
}
|
||||
|
||||
// Redacts returns the event ID of the event this event redacts.
|
||||
func (e Event) Redacts() string {
|
||||
return e.fields.Redacts
|
||||
}
|
||||
|
||||
// RoomID returns the room ID of the room the event is in.
|
||||
func (e Event) RoomID() string {
|
||||
return e.fields.RoomID
|
||||
}
|
||||
|
||||
// Depth returns the depth of the event.
|
||||
func (e Event) Depth() int64 {
|
||||
return e.fields.Depth
|
||||
}
|
||||
|
||||
// UnmarshalJSON implements json.Unmarshaller
|
||||
func (er *EventReference) UnmarshalJSON(data []byte) error {
|
||||
var tuple []rawJSON
|
||||
if err := json.Unmarshal(data, &tuple); err != nil {
|
||||
return err
|
||||
}
|
||||
if len(tuple) != 2 {
|
||||
return fmt.Errorf("gomatrixserverlib: invalid event reference, invalid length: %d != 2", len(tuple))
|
||||
}
|
||||
if err := json.Unmarshal(tuple[0], &er.EventID); err != nil {
|
||||
return fmt.Errorf("gomatrixserverlib: invalid event reference, first element is invalid: %q %v", string(tuple[0]), err)
|
||||
}
|
||||
var hashes struct {
|
||||
SHA256 Base64String `json:"sha256"`
|
||||
}
|
||||
if err := json.Unmarshal(tuple[1], &hashes); err != nil {
|
||||
return fmt.Errorf("gomatrixserverlib: invalid event reference, second element is invalid: %q %v", string(tuple[1]), err)
|
||||
}
|
||||
er.EventSHA256 = hashes.SHA256
|
||||
return nil
|
||||
}
|
||||
|
||||
// MarshalJSON implements json.Marshaller
|
||||
func (er EventReference) MarshalJSON() ([]byte, error) {
|
||||
hashes := struct {
|
||||
SHA256 Base64String `json:"sha256"`
|
||||
}{er.EventSHA256}
|
||||
|
||||
tuple := []interface{}{er.EventID, hashes}
|
||||
|
||||
return json.Marshal(&tuple)
|
||||
}
|
||||
819
vendor/src/github.com/matrix-org/gomatrixserverlib/eventauth.go
vendored
Normal file
819
vendor/src/github.com/matrix-org/gomatrixserverlib/eventauth.go
vendored
Normal file
|
|
@ -0,0 +1,819 @@
|
|||
/* 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"
|
||||
"fmt"
|
||||
"sort"
|
||||
)
|
||||
|
||||
const (
|
||||
join = "join"
|
||||
ban = "ban"
|
||||
leave = "leave"
|
||||
invite = "invite"
|
||||
public = "public"
|
||||
)
|
||||
|
||||
// StateNeeded lists the event types and state_keys needed to authenticate an event.
|
||||
type StateNeeded struct {
|
||||
// Is the m.room.create event needed to auth the event.
|
||||
Create bool
|
||||
// Is the m.room.join_rules event needed to auth the event.
|
||||
JoinRules bool
|
||||
// Is the m.room.power_levels event needed to auth the event.
|
||||
PowerLevels bool
|
||||
// List of m.room.member state_keys needed to auth the event
|
||||
Member []string
|
||||
// List of m.room.third_party_invite state_keys
|
||||
ThirdPartyInvite []string
|
||||
}
|
||||
|
||||
// StateNeededForAuth returns the event types and state_keys needed to authenticate an event.
|
||||
// This takes a list of events to facilitate bulk processing when doing auth checks as part of state conflict resolution.
|
||||
func StateNeededForAuth(events []Event) (result StateNeeded) {
|
||||
var members []string
|
||||
var thirdpartyinvites []string
|
||||
|
||||
for _, event := range events {
|
||||
switch event.Type() {
|
||||
case "m.room.create":
|
||||
// The create event doesn't require any state to authenticate.
|
||||
// https://github.com/matrix-org/synapse/blob/v0.18.5/synapse/api/auth.py#L123
|
||||
case "m.room.aliases":
|
||||
// Alias events need:
|
||||
// * The create event.
|
||||
// https://github.com/matrix-org/synapse/blob/v0.18.5/synapse/api/auth.py#L128
|
||||
// Alias events need no further authentication.
|
||||
// https://github.com/matrix-org/synapse/blob/v0.18.5/synapse/api/auth.py#L160
|
||||
result.Create = true
|
||||
case "m.room.member":
|
||||
// Member events need:
|
||||
// * The previous membership of the target.
|
||||
// https://github.com/matrix-org/synapse/blob/v0.18.5/synapse/api/auth.py#L355
|
||||
// * The current membership state of the sender.
|
||||
// https://github.com/matrix-org/synapse/blob/v0.18.5/synapse/api/auth.py#L348
|
||||
// * The join rules for the room if the event is a join event.
|
||||
// https://github.com/matrix-org/synapse/blob/v0.18.5/synapse/api/auth.py#L361
|
||||
// * The power levels for the room.
|
||||
// https://github.com/matrix-org/synapse/blob/v0.18.5/synapse/api/auth.py#L370
|
||||
// * And optionally may require a m.third_party_invite event
|
||||
// https://github.com/matrix-org/synapse/blob/v0.18.5/synapse/api/auth.py#L393
|
||||
content, err := newMemberContentFromEvent(event)
|
||||
if err != nil {
|
||||
// If we hit an error decoding the content we ignore it here.
|
||||
// The event will be rejected when the actual checks encounter the same error.
|
||||
continue
|
||||
}
|
||||
result.Create = true
|
||||
result.PowerLevels = true
|
||||
stateKey := event.StateKey()
|
||||
if stateKey != nil {
|
||||
members = append(members, event.Sender(), *stateKey)
|
||||
}
|
||||
if content.Membership == join {
|
||||
result.JoinRules = true
|
||||
}
|
||||
if content.ThirdPartyInvite != nil {
|
||||
token, err := thirdPartyInviteToken(content.ThirdPartyInvite)
|
||||
if err != nil {
|
||||
// If we hit an error decoding the content we ignore it here.
|
||||
// The event will be rejected when the actual checks encounter the same error.
|
||||
continue
|
||||
} else {
|
||||
thirdpartyinvites = append(thirdpartyinvites, token)
|
||||
}
|
||||
}
|
||||
|
||||
default:
|
||||
// All other events need:
|
||||
// * The membership of the sender.
|
||||
// https://github.com/matrix-org/synapse/blob/v0.18.5/synapse/api/auth.py#L177
|
||||
// * The power levels for the room.
|
||||
// https://github.com/matrix-org/synapse/blob/v0.18.5/synapse/api/auth.py#L196
|
||||
result.Create = true
|
||||
result.PowerLevels = true
|
||||
members = append(members, event.Sender())
|
||||
}
|
||||
}
|
||||
|
||||
// Deduplicate the state keys.
|
||||
sort.Strings(members)
|
||||
result.Member = members[:unique(sort.StringSlice(members))]
|
||||
sort.Strings(thirdpartyinvites)
|
||||
result.ThirdPartyInvite = thirdpartyinvites[:unique(sort.StringSlice(thirdpartyinvites))]
|
||||
return
|
||||
}
|
||||
|
||||
// Remove duplicate items from a sorted list.
|
||||
// Takes the same interface as sort.Sort
|
||||
// Returns the length of the data without duplicates
|
||||
// Uses the last occurrence of a duplicate.
|
||||
// O(n).
|
||||
func unique(data sort.Interface) int {
|
||||
length := data.Len()
|
||||
if length == 0 {
|
||||
return 0
|
||||
}
|
||||
j := 0
|
||||
for i := 1; i < length; i++ {
|
||||
if data.Less(i-1, i) {
|
||||
data.Swap(i-1, j)
|
||||
j++
|
||||
}
|
||||
}
|
||||
data.Swap(length-1, j)
|
||||
return j + 1
|
||||
}
|
||||
|
||||
// thirdPartyInviteToken extracts the token from the third_party_invite.
|
||||
func thirdPartyInviteToken(thirdPartyInviteData json.RawMessage) (string, error) {
|
||||
var thirdPartyInvite struct {
|
||||
Signed struct {
|
||||
Token string `json:"token"`
|
||||
} `json:"signed"`
|
||||
}
|
||||
if err := json.Unmarshal(thirdPartyInviteData, &thirdPartyInvite); err != nil {
|
||||
return "", err
|
||||
}
|
||||
if thirdPartyInvite.Signed.Token == "" {
|
||||
return "", fmt.Errorf("missing 'third_party_invite.signed.token' JSON key")
|
||||
}
|
||||
return thirdPartyInvite.Signed.Token, nil
|
||||
}
|
||||
|
||||
// AuthEvents are the state events needed to authenticate an event.
|
||||
type AuthEvents interface {
|
||||
// Create returns the m.room.create event for the room.
|
||||
Create() (*Event, error)
|
||||
// JoinRules returns the m.room.join_rules event for the room.
|
||||
JoinRules() (*Event, error)
|
||||
// PowerLevels returns the m.room.power_levels event for the room.
|
||||
PowerLevels() (*Event, error)
|
||||
// Member returns the m.room.member event for the given user_id state_key.
|
||||
Member(stateKey string) (*Event, error)
|
||||
// ThirdPartyInvite returns the m.room.third_party_invite event for the
|
||||
// given state_key
|
||||
ThirdPartyInvite(stateKey string) (*Event, error)
|
||||
}
|
||||
|
||||
// A NotAllowed error is returned if an event does not pass the auth checks.
|
||||
type NotAllowed struct {
|
||||
Message string
|
||||
}
|
||||
|
||||
func (a *NotAllowed) Error() string {
|
||||
return "eventauth: " + a.Message
|
||||
}
|
||||
|
||||
func errorf(message string, args ...interface{}) error {
|
||||
return &NotAllowed{Message: fmt.Sprintf(message, args...)}
|
||||
}
|
||||
|
||||
// Allowed checks whether an event is allowed by the auth events.
|
||||
// It returns a NotAllowed error if the event is not allowed.
|
||||
// If there was an error loading the auth events then it returns that error.
|
||||
func Allowed(event Event, authEvents AuthEvents) error {
|
||||
switch event.Type() {
|
||||
case "m.room.create":
|
||||
return createEventAllowed(event)
|
||||
case "m.room.aliases":
|
||||
return aliasEventAllowed(event, authEvents)
|
||||
case "m.room.member":
|
||||
return memberEventAllowed(event, authEvents)
|
||||
case "m.room.power_levels":
|
||||
return powerLevelsEventAllowed(event, authEvents)
|
||||
case "m.room.redaction":
|
||||
return redactEventAllowed(event, authEvents)
|
||||
default:
|
||||
return defaultEventAllowed(event, authEvents)
|
||||
}
|
||||
}
|
||||
|
||||
// createEventAllowed checks whether the m.room.create event is allowed.
|
||||
// It returns an error if the event is not allowed.
|
||||
func createEventAllowed(event Event) error {
|
||||
if !event.StateKeyEquals("") {
|
||||
return errorf("create event state key is not empty: %v", event.StateKey())
|
||||
}
|
||||
roomIDDomain, err := domainFromID(event.RoomID())
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
senderDomain, err := domainFromID(event.Sender())
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if senderDomain != roomIDDomain {
|
||||
return errorf("create event room ID domain does not match sender: %q != %q", roomIDDomain, senderDomain)
|
||||
}
|
||||
if len(event.PrevEvents()) > 0 {
|
||||
return errorf("create event must be the first event in the room: found %d prev_events", len(event.PrevEvents()))
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// memberEventAllowed checks whether the m.room.member event is allowed.
|
||||
// Membership events have different authentication rules to ordinary events.
|
||||
func memberEventAllowed(event Event, authEvents AuthEvents) error {
|
||||
allower, err := newMembershipAllower(authEvents, event)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
return allower.membershipAllowed(event)
|
||||
}
|
||||
|
||||
// aliasEventAllowed checks whether the m.room.aliases event is allowed.
|
||||
// Alias events have different authentication rules to ordinary events.
|
||||
func aliasEventAllowed(event Event, authEvents AuthEvents) error {
|
||||
// The alias events have different auth rules to ordinary events.
|
||||
// In particular we allow any server to send a m.room.aliases event without checking if the sender is in the room.
|
||||
// This allows server admins to update the m.room.aliases event for their server when they change the aliases on their server.
|
||||
// https://github.com/matrix-org/synapse/blob/v0.18.5/synapse/api/auth.py#L143-L160
|
||||
|
||||
create, err := newCreateContentFromAuthEvents(authEvents)
|
||||
|
||||
senderDomain, err := domainFromID(event.Sender())
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if event.RoomID() != create.roomID {
|
||||
return errorf("create event has different roomID: %q != %q", event.RoomID(), create.roomID)
|
||||
}
|
||||
|
||||
// Check that server is allowed in the room by the m.room.federate flag.
|
||||
if err := create.domainAllowed(senderDomain); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Check that event is a state event.
|
||||
// Check that the state key matches the server sending this event.
|
||||
// https://github.com/matrix-org/synapse/blob/v0.18.5/synapse/api/auth.py#L158
|
||||
if !event.StateKeyEquals(senderDomain) {
|
||||
return errorf("alias state_key does not match sender domain, %q != %q", senderDomain, event.StateKey())
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// powerLevelsEventAllowed checks whether the m.room.power_levels event is allowed.
|
||||
// It returns an error if the event is not allowed or if there was a problem
|
||||
// loading the auth events needed.
|
||||
func powerLevelsEventAllowed(event Event, authEvents AuthEvents) error {
|
||||
allower, err := newEventAllower(authEvents, event.Sender())
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// power level events must pass the default checks.
|
||||
// These checks will catch if the user has a high enough level to set a m.room.power_levels state event.
|
||||
if err = allower.commonChecks(event); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Parse the power levels.
|
||||
newPowerLevels, err := newPowerLevelContentFromEvent(event)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Check that the user levels are all valid user IDs
|
||||
// https://github.com/matrix-org/synapse/blob/v0.18.5/synapse/api/auth.py#L1063
|
||||
for userID := range newPowerLevels.userLevels {
|
||||
if !isValidUserID(userID) {
|
||||
return errorf("Not a valid user ID: %q", userID)
|
||||
}
|
||||
}
|
||||
|
||||
// Grab the old power level event so that we can check if the event existed.
|
||||
var oldEvent *Event
|
||||
if oldEvent, err = authEvents.PowerLevels(); err != nil {
|
||||
return err
|
||||
} else if oldEvent == nil {
|
||||
// If this is the first power level event then it can set the levels to
|
||||
// any value it wants to.
|
||||
// https://github.com/matrix-org/synapse/blob/v0.18.5/synapse/api/auth.py#L1074
|
||||
return nil
|
||||
}
|
||||
|
||||
// Grab the old levels so that we can compare new the levels against them.
|
||||
oldPowerLevels := allower.powerLevels
|
||||
senderLevel := oldPowerLevels.userLevel(event.Sender())
|
||||
|
||||
// Check that the changes in event levels are allowed.
|
||||
if err = checkEventLevels(senderLevel, oldPowerLevels, newPowerLevels); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Check that the changes in user levels are allowed.
|
||||
return checkUserLevels(senderLevel, event.Sender(), oldPowerLevels, newPowerLevels)
|
||||
}
|
||||
|
||||
// checkEventLevels checks that the changes in event levels are allowed.
|
||||
func checkEventLevels(senderLevel int64, oldPowerLevels, newPowerLevels powerLevelContent) error {
|
||||
type levelPair struct {
|
||||
old int64
|
||||
new int64
|
||||
}
|
||||
// Build a list of event levels to check.
|
||||
// This differs slightly in behaviour from the code in synapse because it will use the
|
||||
// default value if a level is not present in one of the old or new events.
|
||||
|
||||
// First add all the named levels.
|
||||
levelChecks := []levelPair{
|
||||
{oldPowerLevels.banLevel, newPowerLevels.banLevel},
|
||||
{oldPowerLevels.inviteLevel, newPowerLevels.inviteLevel},
|
||||
{oldPowerLevels.kickLevel, newPowerLevels.kickLevel},
|
||||
{oldPowerLevels.redactLevel, newPowerLevels.redactLevel},
|
||||
{oldPowerLevels.stateDefaultLevel, newPowerLevels.stateDefaultLevel},
|
||||
{oldPowerLevels.eventDefaultLevel, newPowerLevels.eventDefaultLevel},
|
||||
}
|
||||
|
||||
// Then add checks for each event key in the new levels.
|
||||
// We use the default values for non-state events when applying the checks.
|
||||
// TODO: the per event levels do not distinguish between state and non-state events.
|
||||
// However the default values do make that distinction. We may want to change this.
|
||||
// For example if there is an entry for "my.custom.type" events it sets the level
|
||||
// for sending the event with and without a "state_key". But if there is no entry
|
||||
// for "my.custom.type it will use the state default when sent with a "state_key"
|
||||
// and will use the event default when sent without.
|
||||
const (
|
||||
isStateEvent = false
|
||||
)
|
||||
for eventType := range newPowerLevels.eventLevels {
|
||||
levelChecks = append(levelChecks, levelPair{
|
||||
oldPowerLevels.eventLevel(eventType, isStateEvent),
|
||||
newPowerLevels.eventLevel(eventType, isStateEvent),
|
||||
})
|
||||
}
|
||||
|
||||
// Then add checks for each event key in the old levels.
|
||||
// Some of these will be duplicates of the ones added using the keys from
|
||||
// the new levels. But it doesn't hurt to run the checks twice for the same level.
|
||||
for eventType := range oldPowerLevels.eventLevels {
|
||||
levelChecks = append(levelChecks, levelPair{
|
||||
oldPowerLevels.eventLevel(eventType, isStateEvent),
|
||||
newPowerLevels.eventLevel(eventType, isStateEvent),
|
||||
})
|
||||
}
|
||||
|
||||
// Check each of the levels in the list.
|
||||
for _, level := range levelChecks {
|
||||
// Check if the level is being changed.
|
||||
if level.old == level.new {
|
||||
// Levels are always allowed to stay the same.
|
||||
continue
|
||||
}
|
||||
|
||||
// Users are allowed to change the level for an event if:
|
||||
// * the old level was less than or equal to their own
|
||||
// * the new level was less than or equal to their own
|
||||
// https://github.com/matrix-org/synapse/blob/v0.18.5/synapse/api/auth.py#L1134
|
||||
|
||||
// Check if the user is trying to set any of the levels to above their own.
|
||||
if senderLevel < level.new {
|
||||
return errorf(
|
||||
"sender with level %d is not allowed to change level from %d to %d"+
|
||||
" because the new level is above the level of the sender",
|
||||
senderLevel, level.old, level.new,
|
||||
)
|
||||
}
|
||||
|
||||
// Check if the user is trying to set a level that was above their own.
|
||||
if senderLevel < level.old {
|
||||
return errorf(
|
||||
"sender with level %d is not allowed to change level from %d to %d"+
|
||||
" because the current level is above the level of the sender",
|
||||
senderLevel, level.old, level.new,
|
||||
)
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// checkUserLevels checks that the changes in user levels are allowed.
|
||||
func checkUserLevels(senderLevel int64, senderID string, oldPowerLevels, newPowerLevels powerLevelContent) error {
|
||||
type levelPair struct {
|
||||
old int64
|
||||
new int64
|
||||
userID string
|
||||
}
|
||||
|
||||
// Build a list of user levels to check.
|
||||
// This differs slightly in behaviour from the code in synapse because it will use the
|
||||
// default value if a level is not present in one of the old or new events.
|
||||
|
||||
// First add the user default level.
|
||||
userLevelChecks := []levelPair{
|
||||
{oldPowerLevels.userDefaultLevel, newPowerLevels.userDefaultLevel, ""},
|
||||
}
|
||||
|
||||
// Then add checks for each user key in the new levels.
|
||||
for userID := range newPowerLevels.userLevels {
|
||||
userLevelChecks = append(userLevelChecks, levelPair{
|
||||
oldPowerLevels.userLevel(userID), newPowerLevels.userLevel(userID), userID,
|
||||
})
|
||||
}
|
||||
|
||||
// Then add checks for each user key in the old levels.
|
||||
// Some of these will be duplicates of the ones added using the keys from
|
||||
// the new levels. But it doesn't hurt to run the checks twice for the same level.
|
||||
for userID := range oldPowerLevels.userLevels {
|
||||
userLevelChecks = append(userLevelChecks, levelPair{
|
||||
oldPowerLevels.userLevel(userID), newPowerLevels.userLevel(userID), userID,
|
||||
})
|
||||
}
|
||||
|
||||
// Check each of the levels in the list.
|
||||
for _, level := range userLevelChecks {
|
||||
// Check if the level is being changed.
|
||||
if level.old == level.new {
|
||||
// Levels are always allowed to stay the same.
|
||||
continue
|
||||
}
|
||||
|
||||
// Users are allowed to change the level of other users if:
|
||||
// * the old level was less than their own
|
||||
// * the new level was less than or equal to their own
|
||||
// They are allowed to change their own level if:
|
||||
// * the new level was less than or equal to their own
|
||||
// https://github.com/matrix-org/synapse/blob/v0.18.5/synapse/api/auth.py#L1126-L1127
|
||||
// https://github.com/matrix-org/synapse/blob/v0.18.5/synapse/api/auth.py#L1134
|
||||
|
||||
// Check if the user is trying to set any of the levels to above their own.
|
||||
if senderLevel < level.new {
|
||||
return errorf(
|
||||
"sender with level %d is not allowed change user level from %d to %d"+
|
||||
" because the new level is above the level of the sender",
|
||||
senderLevel, level.old, level.new,
|
||||
)
|
||||
}
|
||||
|
||||
// Check if the user is changing their own user level.
|
||||
if level.userID == senderID {
|
||||
// Users are always allowed to reduce their own user level.
|
||||
// We know that the user is reducing their level because of the previous checks.
|
||||
continue
|
||||
}
|
||||
|
||||
// Check if the user is changing the level that was above or the same as their own.
|
||||
if senderLevel <= level.old {
|
||||
return errorf(
|
||||
"sender with level %d is not allowed to change user level from %d to %d"+
|
||||
" because the old level is equal to or above the level of the sender",
|
||||
senderLevel, level.old, level.new,
|
||||
)
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// redactEventAllowed checks whether the m.room.redaction event is allowed.
|
||||
// It returns an error if the event is not allowed or if there was a problem
|
||||
// loading the auth events needed.
|
||||
func redactEventAllowed(event Event, authEvents AuthEvents) error {
|
||||
allower, err := newEventAllower(authEvents, event.Sender())
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// redact events must pass the default checks,
|
||||
if err = allower.commonChecks(event); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
senderDomain, err := domainFromID(event.Sender())
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
redactDomain, err := domainFromID(event.Redacts())
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Servers are always allowed to redact their own messages.
|
||||
// This is so that users can redact their own messages, but since
|
||||
// we don't know which user ID sent the message being redacted
|
||||
// the only check we can do is to compare the domains of the
|
||||
// sender and the redacted event.
|
||||
// We leave it up to the sending server to implement the additional checks
|
||||
// to ensure that only events that should be redacted are redacted.
|
||||
if senderDomain == redactDomain {
|
||||
return nil
|
||||
}
|
||||
|
||||
// Otherwise the sender must have enough power.
|
||||
// This allows room admins and ops to redact messages sent by other servers.
|
||||
senderLevel := allower.powerLevels.userLevel(event.Sender())
|
||||
redactLevel := allower.powerLevels.redactLevel
|
||||
if senderLevel >= redactLevel {
|
||||
return nil
|
||||
}
|
||||
|
||||
return errorf(
|
||||
"%q is not allowed to redact message from %q. %d < %d",
|
||||
event.Sender(), redactDomain, senderLevel, redactLevel,
|
||||
)
|
||||
}
|
||||
|
||||
// defaultEventAllowed checks whether the event is allowed by the default
|
||||
// checks for events.
|
||||
// It returns an error if the event is not allowed or if there was a
|
||||
// problem loading the auth events needed.
|
||||
func defaultEventAllowed(event Event, authEvents AuthEvents) error {
|
||||
allower, err := newEventAllower(authEvents, event.Sender())
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
return allower.commonChecks(event)
|
||||
}
|
||||
|
||||
// An eventAllower has the information needed to authorise all events types
|
||||
// other than m.room.create, m.room.member and m.room.aliases which are special.
|
||||
type eventAllower struct {
|
||||
// The content of the m.room.create.
|
||||
create createContent
|
||||
// The content of the m.room.member event for the sender.
|
||||
member memberContent
|
||||
// The content of the m.room.power_levels event for the room.
|
||||
powerLevels powerLevelContent
|
||||
}
|
||||
|
||||
// newEventAllower loads the information needed to authorise an event sent
|
||||
// by a given user ID from the auth events.
|
||||
func newEventAllower(authEvents AuthEvents, senderID string) (e eventAllower, err error) {
|
||||
if e.create, err = newCreateContentFromAuthEvents(authEvents); err != nil {
|
||||
return
|
||||
}
|
||||
if e.member, err = newMemberContentFromAuthEvents(authEvents, senderID); err != nil {
|
||||
return
|
||||
}
|
||||
if e.powerLevels, err = newPowerLevelContentFromAuthEvents(authEvents, e.create.Creator); err != nil {
|
||||
return
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// commonChecks does the checks that are applied to all events types other than
|
||||
// m.room.create, m.room.member, or m.room.alias.
|
||||
func (e *eventAllower) commonChecks(event Event) error {
|
||||
if event.RoomID() != e.create.roomID {
|
||||
return errorf("create event has different roomID: %q != %q", event.RoomID(), e.create.roomID)
|
||||
}
|
||||
|
||||
sender := event.Sender()
|
||||
stateKey := event.StateKey()
|
||||
|
||||
if err := e.create.userIDAllowed(sender); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Check that the sender is in the room.
|
||||
// Every event other than m.room.create, m.room.member and m.room.aliases require this.
|
||||
if e.member.Membership != join {
|
||||
return errorf("sender %q not in room", sender)
|
||||
}
|
||||
|
||||
senderLevel := e.powerLevels.userLevel(sender)
|
||||
eventLevel := e.powerLevels.eventLevel(event.Type(), stateKey != nil)
|
||||
if senderLevel < eventLevel {
|
||||
return errorf(
|
||||
"sender %q is not allowed to send event. %d < %d",
|
||||
event.Sender(), senderLevel, eventLevel,
|
||||
)
|
||||
}
|
||||
|
||||
// Check that all state_keys that begin with '@' are only updated by users
|
||||
// with that ID.
|
||||
if stateKey != nil && len(*stateKey) > 0 && (*stateKey)[0] == '@' {
|
||||
if *stateKey != sender {
|
||||
return errorf(
|
||||
"sender %q is not allowed to modify the state belonging to %q",
|
||||
sender, *stateKey,
|
||||
)
|
||||
}
|
||||
}
|
||||
|
||||
// TODO: Implement other restrictions on state_keys required by the specification.
|
||||
// However as synapse doesn't implement those checks at the moment we'll hold off
|
||||
// so that checks between the two codebases don't diverge too much.
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// A membershipAllower has the information needed to authenticate a m.room.member event
|
||||
type membershipAllower struct {
|
||||
// The user ID of the user whose membership is changing.
|
||||
targetID string
|
||||
// The user ID of the user who sent the membership event.
|
||||
senderID string
|
||||
// The membership of the user who sent the membership event.
|
||||
senderMember memberContent
|
||||
// The previous membership of the user whose membership is changing.
|
||||
oldMember memberContent
|
||||
// The new membership of the user if this event is accepted.
|
||||
newMember memberContent
|
||||
// The m.room.create content for the room.
|
||||
create createContent
|
||||
// The m.room.power_levels content for the room.
|
||||
powerLevels powerLevelContent
|
||||
// The m.room.join_rules content for the room.
|
||||
joinRule joinRuleContent
|
||||
}
|
||||
|
||||
// newMembershipAllower loads the information needed to authenticate the m.room.member event
|
||||
// from the auth events.
|
||||
func newMembershipAllower(authEvents AuthEvents, event Event) (m membershipAllower, err error) {
|
||||
stateKey := event.StateKey()
|
||||
if stateKey == nil {
|
||||
err = errorf("m.room.member must be a state event")
|
||||
return
|
||||
}
|
||||
// TODO: Check that the IDs are valid user IDs.
|
||||
m.targetID = *stateKey
|
||||
m.senderID = event.Sender()
|
||||
if m.create, err = newCreateContentFromAuthEvents(authEvents); err != nil {
|
||||
return
|
||||
}
|
||||
if m.newMember, err = newMemberContentFromEvent(event); err != nil {
|
||||
return
|
||||
}
|
||||
if m.oldMember, err = newMemberContentFromAuthEvents(authEvents, m.targetID); err != nil {
|
||||
return
|
||||
}
|
||||
if m.senderMember, err = newMemberContentFromAuthEvents(authEvents, m.senderID); err != nil {
|
||||
return
|
||||
}
|
||||
if m.powerLevels, err = newPowerLevelContentFromAuthEvents(authEvents, m.create.Creator); err != nil {
|
||||
return
|
||||
}
|
||||
// We only need to check the join rules if the proposed membership is "join".
|
||||
if m.newMember.Membership == "join" {
|
||||
if m.joinRule, err = newJoinRuleContentFromAuthEvents(authEvents); err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// membershipAllowed checks whether the membership event is allowed
|
||||
func (m *membershipAllower) membershipAllowed(event Event) error {
|
||||
if m.create.roomID != event.RoomID() {
|
||||
return errorf("create event has different roomID: %q != %q", event.RoomID(), m.create.roomID)
|
||||
}
|
||||
if err := m.create.userIDAllowed(m.senderID); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := m.create.userIDAllowed(m.targetID); err != nil {
|
||||
return err
|
||||
}
|
||||
// Special case the first join event in the room to allow the creator to join.
|
||||
// https://github.com/matrix-org/synapse/blob/v0.18.5/synapse/api/auth.py#L328
|
||||
if m.targetID == m.create.Creator &&
|
||||
m.newMember.Membership == join &&
|
||||
m.senderID == m.targetID &&
|
||||
len(event.PrevEvents()) == 1 {
|
||||
|
||||
// Grab the event ID of the previous event.
|
||||
prevEventID := event.PrevEvents()[0].EventID
|
||||
|
||||
if prevEventID == m.create.eventID {
|
||||
// If this is the room creator joining the room directly after the
|
||||
// the create event, then allow.
|
||||
return nil
|
||||
}
|
||||
// Otherwise fall back to the normal checks.
|
||||
}
|
||||
|
||||
if m.newMember.Membership == invite && len(m.newMember.ThirdPartyInvite) != 0 {
|
||||
// Special case third party invites
|
||||
// https://github.com/matrix-org/synapse/blob/v0.18.5/synapse/api/auth.py#L393
|
||||
panic(fmt.Errorf("ThirdPartyInvite not implemented"))
|
||||
}
|
||||
|
||||
if m.targetID == m.senderID {
|
||||
// If the state_key and the sender are the same then this is an attempt
|
||||
// by a user to update their own membership.
|
||||
return m.membershipAllowedSelf()
|
||||
}
|
||||
// Otherwise this is an attempt to modify the membership of somebody else.
|
||||
return m.membershipAllowedOther()
|
||||
}
|
||||
|
||||
// membershipAllowedSelf determines if the change made by the user to their own membership is allowed.
|
||||
func (m *membershipAllower) membershipAllowedSelf() error {
|
||||
if m.newMember.Membership == join {
|
||||
// A user that is not in the room is allowed to join if the room
|
||||
// join rules are "public".
|
||||
if m.oldMember.Membership == leave && m.joinRule.JoinRule == public {
|
||||
return nil
|
||||
}
|
||||
// An invited user is allowed to join if the join rules are "public"
|
||||
if m.oldMember.Membership == invite && m.joinRule.JoinRule == public {
|
||||
return nil
|
||||
}
|
||||
// An invited user is allowed to join if the join rules are "invite"
|
||||
if m.oldMember.Membership == invite && m.joinRule.JoinRule == invite {
|
||||
return nil
|
||||
}
|
||||
// A joined user is allowed to update their join.
|
||||
if m.oldMember.Membership == join {
|
||||
return nil
|
||||
}
|
||||
}
|
||||
if m.newMember.Membership == leave {
|
||||
// A joined user is allowed to leave the room.
|
||||
if m.oldMember.Membership == join {
|
||||
return nil
|
||||
}
|
||||
// An invited user is allowed to reject an invite.
|
||||
if m.oldMember.Membership == invite {
|
||||
return nil
|
||||
}
|
||||
}
|
||||
return m.membershipFailed()
|
||||
}
|
||||
|
||||
// membershipAllowedOther determines if the user is allowed to change the membership of another user.
|
||||
func (m *membershipAllower) membershipAllowedOther() error {
|
||||
senderLevel := m.powerLevels.userLevel(m.senderID)
|
||||
targetLevel := m.powerLevels.userLevel(m.targetID)
|
||||
|
||||
// You may only modify the membership of another user if you are in the room.
|
||||
if m.senderMember.Membership != join {
|
||||
return errorf("sender %q is not in the room", m.senderID)
|
||||
}
|
||||
|
||||
if m.newMember.Membership == ban {
|
||||
// A user may ban another user if their level is high enough
|
||||
// https://github.com/matrix-org/synapse/blob/v0.18.5/synapse/api/auth.py#L463
|
||||
if senderLevel >= m.powerLevels.banLevel &&
|
||||
senderLevel > targetLevel {
|
||||
return nil
|
||||
}
|
||||
}
|
||||
if m.newMember.Membership == leave {
|
||||
// A user may unban another user if their level is high enough.
|
||||
// This is doesn't require the same power_level checks as banning.
|
||||
// You can unban someone with higher power_level than you.
|
||||
// https://github.com/matrix-org/synapse/blob/v0.18.5/synapse/api/auth.py#L451
|
||||
if m.oldMember.Membership == ban && senderLevel >= m.powerLevels.banLevel {
|
||||
return nil
|
||||
}
|
||||
// A user may kick another user if their level is high enough.
|
||||
// TODO: You can kick a user that was already kicked, or has left the room, or was
|
||||
// never in the room in the first place. Do we want to allow these redundant kicks?
|
||||
if m.oldMember.Membership != ban &&
|
||||
senderLevel >= m.powerLevels.kickLevel &&
|
||||
senderLevel > targetLevel {
|
||||
return nil
|
||||
}
|
||||
}
|
||||
if m.newMember.Membership == invite {
|
||||
// A user may invite another user if the user has left the room.
|
||||
// and their level is high enough.
|
||||
if m.oldMember.Membership == leave && senderLevel >= m.powerLevels.inviteLevel {
|
||||
return nil
|
||||
}
|
||||
// A user may re-invite a user.
|
||||
if m.oldMember.Membership == invite && senderLevel >= m.powerLevels.inviteLevel {
|
||||
return nil
|
||||
}
|
||||
}
|
||||
|
||||
return m.membershipFailed()
|
||||
}
|
||||
|
||||
// membershipFailed returns a error explaining why the membership change was disallowed.
|
||||
func (m *membershipAllower) membershipFailed() error {
|
||||
if m.senderID == m.targetID {
|
||||
return errorf(
|
||||
"%q is not allowed to change their membership from %q to %q",
|
||||
m.targetID, m.oldMember.Membership, m.newMember.Membership,
|
||||
)
|
||||
}
|
||||
|
||||
return errorf(
|
||||
"%q is not allowed to change the membership of %q from %q to %q",
|
||||
m.senderID, m.targetID, m.oldMember.Membership, m.newMember.Membership,
|
||||
)
|
||||
}
|
||||
807
vendor/src/github.com/matrix-org/gomatrixserverlib/eventauth_test.go
vendored
Normal file
807
vendor/src/github.com/matrix-org/gomatrixserverlib/eventauth_test.go
vendored
Normal file
|
|
@ -0,0 +1,807 @@
|
|||
/* 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"
|
||||
)
|
||||
|
||||
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 []Event
|
||||
|
||||
func (tel *testEventList) UnmarshalJSON(data []byte) error {
|
||||
var eventJSONs []rawJSON
|
||||
var events []Event
|
||||
if err := json.Unmarshal([]byte(data), &eventJSONs); err != nil {
|
||||
return err
|
||||
}
|
||||
for _, eventJSON := range eventJSONs {
|
||||
event, err := NewEventFromTrustedJSON([]byte(eventJSON), false)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
events = append(events, event)
|
||||
}
|
||||
*tel = testEventList(events)
|
||||
return nil
|
||||
}
|
||||
|
||||
func testStateNeededForAuth(t *testing.T, eventdata string, 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)
|
||||
}
|
||||
}
|
||||
|
||||
func TestStateNeededForCreate(t *testing.T) {
|
||||
// Create events don't need anything.
|
||||
testStateNeededForAuth(t, `[{"type": "m.room.create"}]`, 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"
|
||||
}]`, 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"}]`, StateNeeded{
|
||||
Create: true,
|
||||
})
|
||||
}
|
||||
|
||||
func TestStateNeededForJoin(t *testing.T) {
|
||||
testStateNeededForAuth(t, `[{
|
||||
"type": "m.room.member",
|
||||
"state_key": "@u1:a",
|
||||
"sender": "@u1:a",
|
||||
"content": {"membership": "join"}
|
||||
}]`, StateNeeded{
|
||||
Create: true,
|
||||
JoinRules: true,
|
||||
PowerLevels: true,
|
||||
Member: []string{"@u1:a"},
|
||||
})
|
||||
}
|
||||
|
||||
func TestStateNeededForInvite(t *testing.T) {
|
||||
testStateNeededForAuth(t, `[{
|
||||
"type": "m.room.member",
|
||||
"state_key": "@u2:b",
|
||||
"sender": "@u1:a",
|
||||
"content": {"membership": "invite"}
|
||||
}]`, StateNeeded{
|
||||
Create: true,
|
||||
PowerLevels: true,
|
||||
Member: []string{"@u1:a", "@u2:b"},
|
||||
})
|
||||
}
|
||||
|
||||
func TestStateNeededForInvite3PID(t *testing.T) {
|
||||
testStateNeededForAuth(t, `[{
|
||||
"type": "m.room.member",
|
||||
"state_key": "@u2:b",
|
||||
"sender": "@u1:a",
|
||||
"content": {
|
||||
"membership": "invite",
|
||||
"third_party_invite": {
|
||||
"signed": {
|
||||
"token": "my_token"
|
||||
}
|
||||
}
|
||||
}
|
||||
}]`, StateNeeded{
|
||||
Create: true,
|
||||
PowerLevels: 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"`
|
||||
}
|
||||
|
||||
func (tae *testAuthEvents) Create() (*Event, error) {
|
||||
if len(tae.CreateJSON) == 0 {
|
||||
return nil, nil
|
||||
}
|
||||
var event Event
|
||||
event, err := NewEventFromTrustedJSON(tae.CreateJSON, false)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return &event, nil
|
||||
}
|
||||
|
||||
func (tae *testAuthEvents) JoinRules() (*Event, error) {
|
||||
if len(tae.JoinRulesJSON) == 0 {
|
||||
return nil, nil
|
||||
}
|
||||
event, err := NewEventFromTrustedJSON(tae.JoinRulesJSON, false)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return &event, nil
|
||||
}
|
||||
|
||||
func (tae *testAuthEvents) PowerLevels() (*Event, error) {
|
||||
if len(tae.PowerLevelsJSON) == 0 {
|
||||
return nil, nil
|
||||
}
|
||||
event, err := NewEventFromTrustedJSON(tae.PowerLevelsJSON, false)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return &event, nil
|
||||
}
|
||||
|
||||
func (tae *testAuthEvents) Member(stateKey string) (*Event, error) {
|
||||
if len(tae.MemberJSON[stateKey]) == 0 {
|
||||
return nil, nil
|
||||
}
|
||||
event, err := NewEventFromTrustedJSON(tae.MemberJSON[stateKey], false)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return &event, nil
|
||||
}
|
||||
|
||||
func (tae *testAuthEvents) ThirdPartyInvite(stateKey string) (*Event, error) {
|
||||
if len(tae.ThirdPartyInviteJSON[stateKey]) == 0 {
|
||||
return nil, nil
|
||||
}
|
||||
event, err := NewEventFromTrustedJSON(tae.ThirdPartyInviteJSON[stateKey], false)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return &event, nil
|
||||
}
|
||||
|
||||
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) {
|
||||
var tc testCase
|
||||
if err := json.Unmarshal([]byte(testCaseJSON), &tc); err != nil {
|
||||
panic(err)
|
||||
}
|
||||
for _, data := range tc.Allowed {
|
||||
event, err := NewEventFromTrustedJSON(data, false)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
if err = Allowed(event, &tc.AuthEvents); err != nil {
|
||||
t.Fatalf("Expected %q to be allowed but it was not: %q", string(data), err)
|
||||
}
|
||||
}
|
||||
for _, data := range tc.NotAllowed {
|
||||
event, err := NewEventFromTrustedJSON(data, false)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
if err := Allowed(event, &tc.AuthEvents); err == nil {
|
||||
t.Fatalf("Expected %q to not be allowed but it was: %q", string(data), 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"
|
||||
}
|
||||
}]
|
||||
}`)
|
||||
}
|
||||
|
||||
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'"
|
||||
}
|
||||
}]
|
||||
}`)
|
||||
}
|
||||
|
||||
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"
|
||||
}
|
||||
}]
|
||||
}`)
|
||||
}
|
||||
|
||||
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."
|
||||
}
|
||||
}]
|
||||
}`)
|
||||
}
|
||||
|
||||
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": "$e16:a",
|
||||
"content": {"body": "Test from @u4:a"},
|
||||
"unsigned": {
|
||||
"not_allowed": "Sent from a different room to the create event"
|
||||
}
|
||||
}, {
|
||||
"type": "my.custom.state",
|
||||
"state_key": "@u2:a",
|
||||
"sender": "@u1:a",
|
||||
"room_id": "!r1:a",
|
||||
"event_id": "@e17:a",
|
||||
"content": {},
|
||||
"unsigned": {
|
||||
"not_allowed": "State key starts with '@' and is for a different user"
|
||||
}
|
||||
}]
|
||||
}`)
|
||||
}
|
||||
|
||||
func TestRedactAllowed(t *testing.T) {
|
||||
// Test if redacts are allowed correctly in a room with a power level event.
|
||||
testEventAllowed(t, `{
|
||||
"auth_events": {
|
||||
"create": {
|
||||
"type": "m.room.create",
|
||||
"sender": "@u1:a",
|
||||
"room_id": "!r1:a",
|
||||
"event_id": "$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",
|
||||
"room_id": "!r1:a",
|
||||
"redacts": "not_a_valid_event_id",
|
||||
"event_id": "$e11:a",
|
||||
"content": {"reason": ""},
|
||||
"unsigned": {
|
||||
"not_allowed": "Invalid redacts event ID"
|
||||
}
|
||||
}, {
|
||||
"type": "m.room.redaction",
|
||||
"sender": "@u1:a",
|
||||
"room_id": "!r1:a",
|
||||
"event_id": "$e11:a",
|
||||
"content": {"reason": ""},
|
||||
"unsigned": {
|
||||
"not_allowed": "Missing redacts event ID"
|
||||
}
|
||||
}]
|
||||
}`)
|
||||
}
|
||||
350
vendor/src/github.com/matrix-org/gomatrixserverlib/eventcontent.go
vendored
Normal file
350
vendor/src/github.com/matrix-org/gomatrixserverlib/eventcontent.go
vendored
Normal file
|
|
@ -0,0 +1,350 @@
|
|||
/* 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"
|
||||
"strconv"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// createContent is the JSON content of a m.room.create event along with
|
||||
// the top level keys needed for auth.
|
||||
// See https://matrix.org/docs/spec/client_server/r0.2.0.html#m-room-create for descriptions of the fields.
|
||||
type createContent struct {
|
||||
// We need the domain of the create event when checking federatability.
|
||||
senderDomain string
|
||||
// We need the roomID to check that events are in the same room as the create event.
|
||||
roomID string
|
||||
// We need the eventID to check the first join event in the room.
|
||||
eventID string
|
||||
// The "m.federate" flag tells us whether the room can be federated to other servers.
|
||||
Federate *bool `json:"m.federate"`
|
||||
// The creator of the room tells us what the default power levels are.
|
||||
Creator string `json:"creator"`
|
||||
}
|
||||
|
||||
// newCreateContentFromAuthEvents loads the create event content from the create event in the
|
||||
// auth events.
|
||||
func newCreateContentFromAuthEvents(authEvents AuthEvents) (c createContent, err error) {
|
||||
var createEvent *Event
|
||||
if createEvent, err = authEvents.Create(); err != nil {
|
||||
return
|
||||
}
|
||||
if createEvent == nil {
|
||||
err = errorf("missing create event")
|
||||
return
|
||||
}
|
||||
if err = json.Unmarshal(createEvent.Content(), &c); err != nil {
|
||||
err = errorf("unparsable create event content: %s", err.Error())
|
||||
return
|
||||
}
|
||||
c.roomID = createEvent.RoomID()
|
||||
c.eventID = createEvent.EventID()
|
||||
if c.senderDomain, err = domainFromID(createEvent.Sender()); err != nil {
|
||||
return
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// domainAllowed checks whether the domain is allowed in the room by the
|
||||
// "m.federate" flag.
|
||||
func (c *createContent) domainAllowed(domain string) error {
|
||||
if domain == c.senderDomain {
|
||||
// If the domain matches the domain of the create event then the event
|
||||
// is always allowed regardless of the value of the "m.federate" flag.
|
||||
return nil
|
||||
}
|
||||
if c.Federate == nil || *c.Federate {
|
||||
// The m.federate field defaults to true.
|
||||
// If the domains are different then event is only allowed if the
|
||||
// "m.federate" flag is absent or true.
|
||||
return nil
|
||||
}
|
||||
return errorf("room is unfederatable")
|
||||
}
|
||||
|
||||
// userIDAllowed checks whether the domain part of the user ID is allowed in
|
||||
// the room by the "m.federate" flag.
|
||||
func (c *createContent) userIDAllowed(id string) error {
|
||||
domain, err := domainFromID(id)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
return c.domainAllowed(domain)
|
||||
}
|
||||
|
||||
// domainFromID returns everything after the first ":" character to extract
|
||||
// the domain part of a matrix ID.
|
||||
func domainFromID(id string) (string, error) {
|
||||
// IDs have the format: SIGIL LOCALPART ":" DOMAIN
|
||||
// Split on the first ":" character since the domain can contain ":"
|
||||
// characters.
|
||||
parts := strings.SplitN(id, ":", 2)
|
||||
if len(parts) != 2 {
|
||||
// The ID must have a ":" character.
|
||||
return "", errorf("invalid ID: %q", id)
|
||||
}
|
||||
// Return everything after the first ":" character.
|
||||
return parts[1], nil
|
||||
}
|
||||
|
||||
// memberContent is the JSON content of a m.room.member event needed for auth checks.
|
||||
// See https://matrix.org/docs/spec/client_server/r0.2.0.html#m-room-member for descriptions of the fields.
|
||||
type memberContent struct {
|
||||
// We use the membership key in order to check if the user is in the room.
|
||||
Membership string `json:"membership"`
|
||||
// We use the third_party_invite key to special case thirdparty invites.
|
||||
ThirdPartyInvite json.RawMessage `json:"third_party_invite"`
|
||||
}
|
||||
|
||||
// newMemberContentFromAuthEvents loads the member content from the member event for the user ID in the auth events.
|
||||
// Returns an error if there was an error loading the member event or parsing the event content.
|
||||
func newMemberContentFromAuthEvents(authEvents AuthEvents, userID string) (c memberContent, err error) {
|
||||
var memberEvent *Event
|
||||
if memberEvent, err = authEvents.Member(userID); err != nil {
|
||||
return
|
||||
}
|
||||
if memberEvent == nil {
|
||||
// If there isn't a member event then the membership for the user
|
||||
// defaults to leave.
|
||||
c.Membership = leave
|
||||
return
|
||||
}
|
||||
return newMemberContentFromEvent(*memberEvent)
|
||||
}
|
||||
|
||||
// newMemberContentFromEvent parse the member content from an event.
|
||||
// Returns an error if the content couldn't be parsed.
|
||||
func newMemberContentFromEvent(event Event) (c memberContent, err error) {
|
||||
if err = json.Unmarshal(event.Content(), &c); err != nil {
|
||||
err = errorf("unparsable member event content: %s", err.Error())
|
||||
return
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// joinRuleContent is the JSON content of a m.room.join_rules event needed for auth checks.
|
||||
// See https://matrix.org/docs/spec/client_server/r0.2.0.html#m-room-join-rules for descriptions of the fields.
|
||||
type joinRuleContent struct {
|
||||
// We use the join_rule key to check whether join m.room.member events are allowed.
|
||||
JoinRule string `json:"join_rule"`
|
||||
}
|
||||
|
||||
// newJoinRuleContentFromAuthEvents loads the join rule content from the join rules event in the auth event.
|
||||
// Returns an error if there was an error loading the join rule event or parsing the content.
|
||||
func newJoinRuleContentFromAuthEvents(authEvents AuthEvents) (c joinRuleContent, err error) {
|
||||
var joinRulesEvent *Event
|
||||
if joinRulesEvent, err = authEvents.JoinRules(); err != nil {
|
||||
return
|
||||
}
|
||||
if joinRulesEvent == nil {
|
||||
// Default to "invite"
|
||||
// https://github.com/matrix-org/synapse/blob/v0.18.5/synapse/api/auth.py#L368
|
||||
c.JoinRule = invite
|
||||
return
|
||||
}
|
||||
if err = json.Unmarshal(joinRulesEvent.Content(), &c); err != nil {
|
||||
err = errorf("unparsable join_rules event content: %s", err.Error())
|
||||
return
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// powerLevelContent is the JSON content of a m.room.power_levels event needed for auth checks.
|
||||
// We can't unmarshal the content directly from JSON because we need to set
|
||||
// defaults and convert string values to int values.
|
||||
// See https://matrix.org/docs/spec/client_server/r0.2.0.html#m-room-power-levels for descriptions of the fields.
|
||||
type powerLevelContent struct {
|
||||
banLevel int64
|
||||
inviteLevel int64
|
||||
kickLevel int64
|
||||
redactLevel int64
|
||||
userLevels map[string]int64
|
||||
userDefaultLevel int64
|
||||
eventLevels map[string]int64
|
||||
eventDefaultLevel int64
|
||||
stateDefaultLevel int64
|
||||
}
|
||||
|
||||
// userLevel returns the power level a user has in the room.
|
||||
func (c *powerLevelContent) userLevel(userID string) int64 {
|
||||
level, ok := c.userLevels[userID]
|
||||
if ok {
|
||||
return level
|
||||
}
|
||||
return c.userDefaultLevel
|
||||
}
|
||||
|
||||
// eventLevel returns the power level needed to send an event in the room.
|
||||
func (c *powerLevelContent) eventLevel(eventType string, isState bool) int64 {
|
||||
if eventType == "m.room.third_party_invite" {
|
||||
// Special case third_party_invite events to have the same level as
|
||||
// m.room.member invite events.
|
||||
// https://github.com/matrix-org/synapse/blob/v0.18.5/synapse/api/auth.py#L182
|
||||
return c.inviteLevel
|
||||
}
|
||||
level, ok := c.eventLevels[eventType]
|
||||
if ok {
|
||||
return level
|
||||
}
|
||||
if isState {
|
||||
return c.stateDefaultLevel
|
||||
}
|
||||
return c.eventDefaultLevel
|
||||
}
|
||||
|
||||
// newPowerLevelContentFromAuthEvents loads the power level content from the
|
||||
// power level event in the auth events or returns the default values if there
|
||||
// is no power level event.
|
||||
func newPowerLevelContentFromAuthEvents(authEvents AuthEvents, creatorUserID string) (c powerLevelContent, err error) {
|
||||
powerLevelsEvent, err := authEvents.PowerLevels()
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
if powerLevelsEvent != nil {
|
||||
return newPowerLevelContentFromEvent(*powerLevelsEvent)
|
||||
}
|
||||
|
||||
// If there are no power levels then fall back to defaults.
|
||||
c.defaults()
|
||||
// If there is no power level event then the creator gets level 100
|
||||
// https://github.com/matrix-org/synapse/blob/v0.18.5/synapse/api/auth.py#L569
|
||||
c.userLevels = map[string]int64{creatorUserID: 100}
|
||||
return
|
||||
}
|
||||
|
||||
// defaults sets the power levels to their default values.
|
||||
func (c *powerLevelContent) defaults() {
|
||||
// Default invite level is 0.
|
||||
// https://github.com/matrix-org/synapse/blob/v0.18.5/synapse/api/auth.py#L426
|
||||
c.inviteLevel = 0
|
||||
// Default ban, kick and redacts levels are 50
|
||||
// https://github.com/matrix-org/synapse/blob/v0.18.5/synapse/api/auth.py#L376
|
||||
// https://github.com/matrix-org/synapse/blob/v0.18.5/synapse/api/auth.py#L456
|
||||
// https://github.com/matrix-org/synapse/blob/v0.18.5/synapse/api/auth.py#L1041
|
||||
c.banLevel = 50
|
||||
c.kickLevel = 50
|
||||
c.redactLevel = 50
|
||||
// Default user level is 0
|
||||
// https://github.com/matrix-org/synapse/blob/v0.18.5/synapse/api/auth.py#L558
|
||||
c.userDefaultLevel = 0
|
||||
// Default event level is 0, Default state level is 50
|
||||
// https://github.com/matrix-org/synapse/blob/v0.18.5/synapse/api/auth.py#L987
|
||||
// https://github.com/matrix-org/synapse/blob/v0.18.5/synapse/api/auth.py#L991
|
||||
c.eventDefaultLevel = 0
|
||||
c.stateDefaultLevel = 50
|
||||
|
||||
}
|
||||
|
||||
// newPowerLevelContentFromEvent loads the power level content from an event.
|
||||
func newPowerLevelContentFromEvent(event Event) (c powerLevelContent, err error) {
|
||||
// Set the levels to their default values.
|
||||
c.defaults()
|
||||
|
||||
// We can't extract the JSON directly to the powerLevelContent because we
|
||||
// need to convert string values to int values.
|
||||
var content struct {
|
||||
InviteLevel levelJSONValue `json:"invite"`
|
||||
BanLevel levelJSONValue `json:"ban"`
|
||||
KickLevel levelJSONValue `json:"kick"`
|
||||
RedactLevel levelJSONValue `json:"redact"`
|
||||
UserLevels map[string]levelJSONValue `json:"users"`
|
||||
UsersDefaultLevel levelJSONValue `json:"users_default"`
|
||||
EventLevels map[string]levelJSONValue `json:"events"`
|
||||
StateDefaultLevel levelJSONValue `json:"state_default"`
|
||||
EventDefaultLevel levelJSONValue `json:"event_default"`
|
||||
}
|
||||
if err = json.Unmarshal(event.Content(), &content); err != nil {
|
||||
err = errorf("unparsable power_levels event content: %s", err.Error())
|
||||
return
|
||||
}
|
||||
|
||||
// Update the levels with the values that are present in the event content.
|
||||
content.InviteLevel.assignIfExists(&c.inviteLevel)
|
||||
content.BanLevel.assignIfExists(&c.banLevel)
|
||||
content.KickLevel.assignIfExists(&c.kickLevel)
|
||||
content.RedactLevel.assignIfExists(&c.redactLevel)
|
||||
content.UsersDefaultLevel.assignIfExists(&c.userDefaultLevel)
|
||||
content.StateDefaultLevel.assignIfExists(&c.stateDefaultLevel)
|
||||
content.EventDefaultLevel.assignIfExists(&c.eventDefaultLevel)
|
||||
|
||||
for k, v := range content.UserLevels {
|
||||
if c.userLevels == nil {
|
||||
c.userLevels = make(map[string]int64)
|
||||
}
|
||||
c.userLevels[k] = v.value
|
||||
}
|
||||
|
||||
for k, v := range content.EventLevels {
|
||||
if c.eventLevels == nil {
|
||||
c.eventLevels = make(map[string]int64)
|
||||
}
|
||||
c.eventLevels[k] = v.value
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// A levelJSONValue is used for unmarshalling power levels from JSON.
|
||||
// It is intended to replicate the effects of x = int(content["key"]) in python.
|
||||
type levelJSONValue struct {
|
||||
// Was a value loaded from the JSON?
|
||||
exists bool
|
||||
// The integer value of the power level.
|
||||
value int64
|
||||
}
|
||||
|
||||
func (v *levelJSONValue) UnmarshalJSON(data []byte) error {
|
||||
var stringValue string
|
||||
var int64Value int64
|
||||
var floatValue float64
|
||||
var err error
|
||||
|
||||
// First try to unmarshal as an int64.
|
||||
if err = json.Unmarshal(data, &int64Value); err != nil {
|
||||
// If unmarshalling as an int64 fails try as a string.
|
||||
if err = json.Unmarshal(data, &stringValue); err != nil {
|
||||
// If unmarshalling as a string fails try as a float.
|
||||
if err = json.Unmarshal(data, &floatValue); err != nil {
|
||||
return err
|
||||
}
|
||||
int64Value = int64(floatValue)
|
||||
} else {
|
||||
// If we managed to get a string, try parsing the string as an int.
|
||||
int64Value, err = strconv.ParseInt(stringValue, 10, 64)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
}
|
||||
v.exists = true
|
||||
v.value = int64Value
|
||||
return nil
|
||||
}
|
||||
|
||||
// assign the power level if a value was present in the JSON.
|
||||
func (v *levelJSONValue) assignIfExists(to *int64) {
|
||||
if v.exists {
|
||||
*to = v.value
|
||||
}
|
||||
}
|
||||
|
||||
// Check if the user ID is a valid user ID.
|
||||
func isValidUserID(userID string) bool {
|
||||
// TODO: Do we want to add anymore checks beyond checking the sigil and that it has a domain part?
|
||||
return userID[0] == '@' && strings.IndexByte(userID, ':') != -1
|
||||
}
|
||||
51
vendor/src/github.com/matrix-org/gomatrixserverlib/eventcontent_test.go
vendored
Normal file
51
vendor/src/github.com/matrix-org/gomatrixserverlib/eventcontent_test.go
vendored
Normal file
|
|
@ -0,0 +1,51 @@
|
|||
/* 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"
|
||||
)
|
||||
|
||||
func TestLevelJSONValueValid(t *testing.T) {
|
||||
var values []levelJSONValue
|
||||
input := `[0,"1",2.0]`
|
||||
if err := json.Unmarshal([]byte(input), &values); err != nil {
|
||||
t.Fatal("Unexpected error unmarshalling ", input, ": ", err)
|
||||
}
|
||||
for i, got := range values {
|
||||
want := i
|
||||
if !got.exists {
|
||||
t.Fatalf("Wanted entry %d to exist", want)
|
||||
}
|
||||
if int64(want) != got.value {
|
||||
t.Fatalf("Wanted %d got %q", want, got.value)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestLevelJSONValueInvalid(t *testing.T) {
|
||||
var values []levelJSONValue
|
||||
inputs := []string{
|
||||
`[{}]`, `[[]]`, `["not a number"]`, `["0.0"]`,
|
||||
}
|
||||
|
||||
for _, input := range inputs {
|
||||
if err := json.Unmarshal([]byte(input), &values); err == nil {
|
||||
t.Fatalf("Unexpected success when unmarshalling %q", input)
|
||||
}
|
||||
}
|
||||
}
|
||||
186
vendor/src/github.com/matrix-org/gomatrixserverlib/eventcrypto.go
vendored
Normal file
186
vendor/src/github.com/matrix-org/gomatrixserverlib/eventcrypto.go
vendored
Normal file
|
|
@ -0,0 +1,186 @@
|
|||
/* 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 (
|
||||
"bytes"
|
||||
"crypto/sha256"
|
||||
"encoding/json"
|
||||
"fmt"
|
||||
"golang.org/x/crypto/ed25519"
|
||||
)
|
||||
|
||||
// addContentHashesToEvent sets the "hashes" key of the event with a SHA-256 hash of the unredacted event content.
|
||||
// This hash is used to detect whether the unredacted content of the event is valid.
|
||||
// Returns the event JSON with a "hashes" key added to it.
|
||||
func addContentHashesToEvent(eventJSON []byte) ([]byte, error) {
|
||||
var event map[string]rawJSON
|
||||
|
||||
if err := json.Unmarshal(eventJSON, &event); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
unsignedJSON := event["unsigned"]
|
||||
|
||||
delete(event, "unsigned")
|
||||
delete(event, "hashes")
|
||||
|
||||
hashableEventJSON, err := json.Marshal(event)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
hashableEventJSON, err = CanonicalJSON(hashableEventJSON)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
sha256Hash := sha256.Sum256(hashableEventJSON)
|
||||
hashes := struct {
|
||||
Sha256 Base64String `json:"sha256"`
|
||||
}{Base64String(sha256Hash[:])}
|
||||
hashesJSON, err := json.Marshal(&hashes)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if len(unsignedJSON) > 0 {
|
||||
event["unsigned"] = unsignedJSON
|
||||
}
|
||||
event["hashes"] = rawJSON(hashesJSON)
|
||||
|
||||
return json.Marshal(event)
|
||||
}
|
||||
|
||||
// checkEventContentHash checks if the unredacted content of the event matches the SHA-256 hash under the "hashes" key.
|
||||
func checkEventContentHash(eventJSON []byte) error {
|
||||
var event map[string]rawJSON
|
||||
|
||||
if err := json.Unmarshal(eventJSON, &event); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
hashesJSON := event["hashes"]
|
||||
|
||||
delete(event, "signatures")
|
||||
delete(event, "unsigned")
|
||||
delete(event, "hashes")
|
||||
|
||||
var hashes struct {
|
||||
Sha256 Base64String `json:"sha256"`
|
||||
}
|
||||
if err := json.Unmarshal(hashesJSON, &hashes); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
hashableEventJSON, err := json.Marshal(event)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
hashableEventJSON, err = CanonicalJSON(hashableEventJSON)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
sha256Hash := sha256.Sum256(hashableEventJSON)
|
||||
|
||||
if bytes.Compare(sha256Hash[:], []byte(hashes.Sha256)) != 0 {
|
||||
return fmt.Errorf("Invalid Sha256 content hash: %v != %v", sha256Hash[:], []byte(hashes.Sha256))
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// ReferenceSha256HashOfEvent returns the SHA-256 hash of the redacted event content.
|
||||
// This is used when referring to this event from other events.
|
||||
func referenceOfEvent(eventJSON []byte) (EventReference, error) {
|
||||
redactedJSON, err := redactEvent(eventJSON)
|
||||
if err != nil {
|
||||
return EventReference{}, err
|
||||
}
|
||||
|
||||
var event map[string]rawJSON
|
||||
if err = json.Unmarshal(redactedJSON, &event); err != nil {
|
||||
return EventReference{}, err
|
||||
}
|
||||
|
||||
delete(event, "signatures")
|
||||
delete(event, "unsigned")
|
||||
|
||||
hashableEventJSON, err := json.Marshal(event)
|
||||
if err != nil {
|
||||
return EventReference{}, err
|
||||
}
|
||||
|
||||
hashableEventJSON, err = CanonicalJSON(hashableEventJSON)
|
||||
if err != nil {
|
||||
return EventReference{}, err
|
||||
}
|
||||
|
||||
sha256Hash := sha256.Sum256(hashableEventJSON)
|
||||
|
||||
var eventID string
|
||||
if err = json.Unmarshal(event["event_id"], &eventID); err != nil {
|
||||
return EventReference{}, err
|
||||
}
|
||||
|
||||
return EventReference{eventID, sha256Hash[:]}, nil
|
||||
}
|
||||
|
||||
// SignEvent adds a ED25519 signature to the event for the given key.
|
||||
func signEvent(signingName, keyID string, privateKey ed25519.PrivateKey, eventJSON []byte) ([]byte, error) {
|
||||
|
||||
// Redact the event before signing so signature that will remain valid even if the event is redacted.
|
||||
redactedJSON, err := redactEvent(eventJSON)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// Sign the JSON, this adds a "signatures" key to the redacted event.
|
||||
// TODO: Make an internal version of SignJSON that returns just the signatures so that we don't have to parse it out of the JSON.
|
||||
signedJSON, err := SignJSON(signingName, keyID, privateKey, redactedJSON)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
var signedEvent struct {
|
||||
Signatures rawJSON `json:"signatures"`
|
||||
}
|
||||
if err := json.Unmarshal(signedJSON, &signedEvent); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// Unmarshal the event JSON so that we can replace the signatures key.
|
||||
var event map[string]rawJSON
|
||||
if err := json.Unmarshal(eventJSON, &event); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
event["signatures"] = signedEvent.Signatures
|
||||
|
||||
return json.Marshal(event)
|
||||
}
|
||||
|
||||
// VerifyEventSignature checks if the event has been signed by the given ED25519 key.
|
||||
func verifyEventSignature(signingName, keyID string, publicKey ed25519.PublicKey, eventJSON []byte) error {
|
||||
redactedJSON, err := redactEvent(eventJSON)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
return VerifyJSON(signingName, keyID, publicKey, redactedJSON)
|
||||
}
|
||||
259
vendor/src/github.com/matrix-org/gomatrixserverlib/eventcrypto_test.go
vendored
Normal file
259
vendor/src/github.com/matrix-org/gomatrixserverlib/eventcrypto_test.go
vendored
Normal file
|
|
@ -0,0 +1,259 @@
|
|||
/* 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 (
|
||||
"bytes"
|
||||
"encoding/base64"
|
||||
"golang.org/x/crypto/ed25519"
|
||||
"testing"
|
||||
)
|
||||
|
||||
func TestVerifyEventSignatureTestVectors(t *testing.T) {
|
||||
// Check JSON verification using the test vectors from https://matrix.org/docs/spec/appendices.html
|
||||
seed, err := base64.RawStdEncoding.DecodeString("YJDBA9Xnr2sVqXD9Vj7XVUnmFZcZrlw8Md7kMW+3XA1")
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
random := bytes.NewBuffer(seed)
|
||||
entityName := "domain"
|
||||
keyID := "ed25519:1"
|
||||
|
||||
publicKey, _, err := ed25519.GenerateKey(random)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
testVerifyOK := func(input string) {
|
||||
err := verifyEventSignature(entityName, keyID, publicKey, []byte(input))
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
testVerifyNotOK := func(reason, input string) {
|
||||
err := verifyEventSignature(entityName, keyID, publicKey, []byte(input))
|
||||
if err == nil {
|
||||
t.Fatalf("Expected VerifyJSON to fail for input %v because %v", input, reason)
|
||||
}
|
||||
}
|
||||
|
||||
testVerifyOK(`{
|
||||
"event_id": "$0:domain",
|
||||
"hashes": {
|
||||
"sha256": "6tJjLpXtggfke8UxFhAKg82QVkJzvKOVOOSjUDK4ZSI"
|
||||
},
|
||||
"origin": "domain",
|
||||
"origin_server_ts": 1000000,
|
||||
"signatures": {
|
||||
"domain": {
|
||||
"ed25519:1": "2Wptgo4CwmLo/Y8B8qinxApKaCkBG2fjTWB7AbP5Uy+aIbygsSdLOFzvdDjww8zUVKCmI02eP9xtyJxc/cLiBA"
|
||||
}
|
||||
},
|
||||
"type": "X",
|
||||
"unsigned": {
|
||||
"age_ts": 1000000
|
||||
}
|
||||
}`)
|
||||
|
||||
// It should still pass signature checks, even if we remove the unsigned data.
|
||||
testVerifyOK(`{
|
||||
"event_id": "$0:domain",
|
||||
"hashes": {
|
||||
"sha256": "6tJjLpXtggfke8UxFhAKg82QVkJzvKOVOOSjUDK4ZSI"
|
||||
},
|
||||
"origin": "domain",
|
||||
"origin_server_ts": 1000000,
|
||||
"signatures": {
|
||||
"domain": {
|
||||
"ed25519:1": "2Wptgo4CwmLo/Y8B8qinxApKaCkBG2fjTWB7AbP5Uy+aIbygsSdLOFzvdDjww8zUVKCmI02eP9xtyJxc/cLiBA"
|
||||
}
|
||||
},
|
||||
"type": "X",
|
||||
"unsigned": {}
|
||||
}`)
|
||||
|
||||
testVerifyOK(`{
|
||||
"content": {
|
||||
"body": "Here is the message content"
|
||||
},
|
||||
"event_id": "$0:domain",
|
||||
"hashes": {
|
||||
"sha256": "onLKD1bGljeBWQhWZ1kaP9SorVmRQNdN5aM2JYU2n/g"
|
||||
},
|
||||
"origin": "domain",
|
||||
"origin_server_ts": 1000000,
|
||||
"type": "m.room.message",
|
||||
"room_id": "!r:domain",
|
||||
"sender": "@u:domain",
|
||||
"signatures": {
|
||||
"domain": {
|
||||
"ed25519:1": "Wm+VzmOUOz08Ds+0NTWb1d4CZrVsJSikkeRxh6aCcUwu6pNC78FunoD7KNWzqFn241eYHYMGCA5McEiVPdhzBA"
|
||||
}
|
||||
},
|
||||
"unsigned": {
|
||||
"age_ts": 1000000
|
||||
}
|
||||
}`)
|
||||
|
||||
// It should still pass signature checks, even if we redact the content.
|
||||
testVerifyOK(`{
|
||||
"content": {},
|
||||
"event_id": "$0:domain",
|
||||
"hashes": {
|
||||
"sha256": "onLKD1bGljeBWQhWZ1kaP9SorVmRQNdN5aM2JYU2n/g"
|
||||
},
|
||||
"origin": "domain",
|
||||
"origin_server_ts": 1000000,
|
||||
"type": "m.room.message",
|
||||
"room_id": "!r:domain",
|
||||
"sender": "@u:domain",
|
||||
"signatures": {
|
||||
"domain": {
|
||||
"ed25519:1": "Wm+VzmOUOz08Ds+0NTWb1d4CZrVsJSikkeRxh6aCcUwu6pNC78FunoD7KNWzqFn241eYHYMGCA5McEiVPdhzBA"
|
||||
}
|
||||
},
|
||||
"unsigned": {}
|
||||
}`)
|
||||
|
||||
testVerifyNotOK("The event is modified", `{
|
||||
"event_id": "$0:domain",
|
||||
"hashes": {
|
||||
"sha256": "6tJjLpXtggfke8UxFhAKg82QVkJzvKOVOOSjUDK4ZSI"
|
||||
},
|
||||
"origin": "domain",
|
||||
"origin_server_ts": 1000000,
|
||||
"signatures": {
|
||||
"domain": {
|
||||
"ed25519:1": "2Wptgo4CwmLo/Y8B8qinxApKaCkBG2fjTWB7AbP5Uy+aIbygsSdLOFzvdDjww8zUVKCmI02eP9xtyJxc/cLiBA"
|
||||
}
|
||||
},
|
||||
"type": "modified",
|
||||
"unsigned": {}
|
||||
}`)
|
||||
|
||||
testVerifyNotOK("The content hash is modified", `{
|
||||
"content": {},
|
||||
"event_id": "$0:domain",
|
||||
"hashes": {
|
||||
"sha256": "adifferenthashvalueaP9SorVmRQNdN5aM2JYU2n/g"
|
||||
},
|
||||
"origin": "domain",
|
||||
"origin_server_ts": 1000000,
|
||||
"type": "m.room.message",
|
||||
"room_id": "!r:domain",
|
||||
"sender": "@u:domain",
|
||||
"signatures": {
|
||||
"domain": {
|
||||
"ed25519:1": "Wm+VzmOUOz08Ds+0NTWb1d4CZrVsJSikkeRxh6aCcUwu6pNC78FunoD7KNWzqFn241eYHYMGCA5McEiVPdhzBA"
|
||||
}
|
||||
},
|
||||
"unsigned": {}
|
||||
}`)
|
||||
}
|
||||
|
||||
func TestSignEventTestVectors(t *testing.T) {
|
||||
// Check matrix event signing using the test vectors from https://matrix.org/docs/spec/appendices.html
|
||||
seed, err := base64.RawStdEncoding.DecodeString("YJDBA9Xnr2sVqXD9Vj7XVUnmFZcZrlw8Md7kMW+3XA1")
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
random := bytes.NewBuffer(seed)
|
||||
entityName := "domain"
|
||||
keyID := "ed25519:1"
|
||||
|
||||
_, privateKey, err := ed25519.GenerateKey(random)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
testSign := func(input string, want string) {
|
||||
hashed, err := addContentHashesToEvent([]byte(input))
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
signed, err := signEvent(entityName, keyID, privateKey, hashed)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if !IsJSONEqual([]byte(want), signed) {
|
||||
t.Fatalf("SignEvent(%q): want %v got %v", input, want, string(signed))
|
||||
}
|
||||
}
|
||||
|
||||
testSign(`{
|
||||
"event_id": "$0:domain",
|
||||
"origin": "domain",
|
||||
"origin_server_ts": 1000000,
|
||||
"type": "X",
|
||||
"unsigned": {
|
||||
"age_ts": 1000000
|
||||
}
|
||||
}`, `{
|
||||
"event_id": "$0:domain",
|
||||
"hashes": {
|
||||
"sha256": "6tJjLpXtggfke8UxFhAKg82QVkJzvKOVOOSjUDK4ZSI"
|
||||
},
|
||||
"origin": "domain",
|
||||
"origin_server_ts": 1000000,
|
||||
"signatures": {
|
||||
"domain": {
|
||||
"ed25519:1": "2Wptgo4CwmLo/Y8B8qinxApKaCkBG2fjTWB7AbP5Uy+aIbygsSdLOFzvdDjww8zUVKCmI02eP9xtyJxc/cLiBA"
|
||||
}
|
||||
},
|
||||
"type": "X",
|
||||
"unsigned": {
|
||||
"age_ts": 1000000
|
||||
}
|
||||
}`)
|
||||
|
||||
testSign(`{
|
||||
"content": {
|
||||
"body": "Here is the message content"
|
||||
},
|
||||
"event_id": "$0:domain",
|
||||
"origin": "domain",
|
||||
"origin_server_ts": 1000000,
|
||||
"type": "m.room.message",
|
||||
"room_id": "!r:domain",
|
||||
"sender": "@u:domain",
|
||||
"unsigned": {
|
||||
"age_ts": 1000000
|
||||
}
|
||||
}`, `{
|
||||
"content": {
|
||||
"body": "Here is the message content"
|
||||
},
|
||||
"event_id": "$0:domain",
|
||||
"hashes": {
|
||||
"sha256": "onLKD1bGljeBWQhWZ1kaP9SorVmRQNdN5aM2JYU2n/g"
|
||||
},
|
||||
"origin": "domain",
|
||||
"origin_server_ts": 1000000,
|
||||
"type": "m.room.message",
|
||||
"room_id": "!r:domain",
|
||||
"sender": "@u:domain",
|
||||
"signatures": {
|
||||
"domain": {
|
||||
"ed25519:1": "Wm+VzmOUOz08Ds+0NTWb1d4CZrVsJSikkeRxh6aCcUwu6pNC78FunoD7KNWzqFn241eYHYMGCA5McEiVPdhzBA"
|
||||
}
|
||||
},
|
||||
"unsigned": {
|
||||
"age_ts": 1000000
|
||||
}
|
||||
}`)
|
||||
}
|
||||
5
vendor/src/github.com/matrix-org/gomatrixserverlib/hooks/install.sh
vendored
Normal file
5
vendor/src/github.com/matrix-org/gomatrixserverlib/hooks/install.sh
vendored
Normal file
|
|
@ -0,0 +1,5 @@
|
|||
#! /bin/bash
|
||||
|
||||
DOT_GIT="$(dirname $0)/../.git"
|
||||
|
||||
ln -s "../../hooks/pre-commit" "$DOT_GIT/hooks/pre-commit"
|
||||
9
vendor/src/github.com/matrix-org/gomatrixserverlib/hooks/pre-commit
vendored
Normal file
9
vendor/src/github.com/matrix-org/gomatrixserverlib/hooks/pre-commit
vendored
Normal file
|
|
@ -0,0 +1,9 @@
|
|||
#! /bin/bash
|
||||
|
||||
set -eu
|
||||
|
||||
golint ./...
|
||||
go fmt
|
||||
go tool vet --all --shadow .
|
||||
gocyclo -over 16 .
|
||||
go test -timeout 5s . ./...
|
||||
239
vendor/src/github.com/matrix-org/gomatrixserverlib/json.go
vendored
Normal file
239
vendor/src/github.com/matrix-org/gomatrixserverlib/json.go
vendored
Normal file
|
|
@ -0,0 +1,239 @@
|
|||
/* 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 (
|
||||
"bytes"
|
||||
"encoding/binary"
|
||||
"encoding/json"
|
||||
"sort"
|
||||
"unicode/utf8"
|
||||
)
|
||||
|
||||
// CanonicalJSON re-encodes the JSON in a cannonical encoding. The encoding is
|
||||
// the shortest possible encoding using integer values with sorted object keys.
|
||||
// https://matrix.org/docs/spec/server_server/unstable.html#canonical-json
|
||||
func CanonicalJSON(input []byte) ([]byte, error) {
|
||||
sorted, err := SortJSON(input, make([]byte, 0, len(input)))
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return CompactJSON(sorted, make([]byte, 0, len(sorted))), nil
|
||||
}
|
||||
|
||||
// SortJSON reencodes the JSON with the object keys sorted by lexicographically
|
||||
// by codepoint. The input must be valid JSON.
|
||||
func SortJSON(input, output []byte) ([]byte, error) {
|
||||
// Skip to the first character that isn't whitespace.
|
||||
var decoded interface{}
|
||||
|
||||
decoder := json.NewDecoder(bytes.NewReader(input))
|
||||
decoder.UseNumber()
|
||||
if err := decoder.Decode(&decoded); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return sortJSONValue(decoded, output)
|
||||
}
|
||||
|
||||
func sortJSONValue(input interface{}, output []byte) ([]byte, error) {
|
||||
switch value := input.(type) {
|
||||
case []interface{}:
|
||||
// If the JSON is an array then we need to sort the keys of its children.
|
||||
return sortJSONArray(value, output)
|
||||
case map[string]interface{}:
|
||||
// If the JSON is an object then we need to sort its keys and the keys of its children.
|
||||
return sortJSONObject(value, output)
|
||||
default:
|
||||
// Otherwise the JSON is a value and can be encoded without any further sorting.
|
||||
bytes, err := json.Marshal(value)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return append(output, bytes...), nil
|
||||
}
|
||||
}
|
||||
|
||||
func sortJSONArray(input []interface{}, output []byte) ([]byte, error) {
|
||||
var err error
|
||||
sep := byte('[')
|
||||
for _, value := range input {
|
||||
output = append(output, sep)
|
||||
sep = ','
|
||||
if output, err = sortJSONValue(value, output); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
if sep == '[' {
|
||||
// If sep is still '[' then the array was empty and we never wrote the
|
||||
// initial '[', so we write it now along with the closing ']'.
|
||||
output = append(output, '[', ']')
|
||||
} else {
|
||||
// Otherwise we end the array by writing a single ']'
|
||||
output = append(output, ']')
|
||||
}
|
||||
return output, nil
|
||||
}
|
||||
|
||||
func sortJSONObject(input map[string]interface{}, output []byte) ([]byte, error) {
|
||||
var err error
|
||||
keys := make([]string, len(input))
|
||||
var j int
|
||||
for key := range input {
|
||||
keys[j] = key
|
||||
j++
|
||||
}
|
||||
sort.Strings(keys)
|
||||
sep := byte('{')
|
||||
for _, key := range keys {
|
||||
output = append(output, sep)
|
||||
sep = ','
|
||||
var encoded []byte
|
||||
if encoded, err = json.Marshal(key); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
output = append(output, encoded...)
|
||||
output = append(output, ':')
|
||||
if output, err = sortJSONValue(input[key], output); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
if sep == '{' {
|
||||
// If sep is still '{' then the object was empty and we never wrote the
|
||||
// initial '{', so we write it now along with the closing '}'.
|
||||
output = append(output, '{', '}')
|
||||
} else {
|
||||
// Otherwise we end the object by writing a single '}'
|
||||
output = append(output, '}')
|
||||
}
|
||||
return output, nil
|
||||
}
|
||||
|
||||
// CompactJSON makes the encoded JSON as small as possible by removing
|
||||
// whitespace and unneeded unicode escapes
|
||||
func CompactJSON(input, output []byte) []byte {
|
||||
var i int
|
||||
for i < len(input) {
|
||||
c := input[i]
|
||||
i++
|
||||
// The valid whitespace characters are all less than or equal to SPACE 0x20.
|
||||
// The valid non-white characters are all greater than SPACE 0x20.
|
||||
// So we can check for whitespace by comparing against SPACE 0x20.
|
||||
if c <= ' ' {
|
||||
// Skip over whitespace.
|
||||
continue
|
||||
}
|
||||
// Add the non-whitespace character to the output.
|
||||
output = append(output, c)
|
||||
if c == '"' {
|
||||
// We are inside a string.
|
||||
for i < len(input) {
|
||||
c = input[i]
|
||||
i++
|
||||
// Check if this is an escape sequence.
|
||||
if c == '\\' {
|
||||
escape := input[i]
|
||||
i++
|
||||
if escape == 'u' {
|
||||
// If this is a unicode escape then we need to handle it specially
|
||||
output, i = compactUnicodeEscape(input, output, i)
|
||||
} else if escape == '/' {
|
||||
// JSON does not require escaping '/', but allows encoders to escape it as a special case.
|
||||
// Since the escape isn't required we remove it.
|
||||
output = append(output, escape)
|
||||
} else {
|
||||
// All other permitted escapes are single charater escapes that are already in their shortest form.
|
||||
output = append(output, '\\', escape)
|
||||
}
|
||||
} else {
|
||||
output = append(output, c)
|
||||
}
|
||||
if c == '"' {
|
||||
break
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
return output
|
||||
}
|
||||
|
||||
// compactUnicodeEscape unpacks a 4 byte unicode escape starting at index.
|
||||
// If the escape is a surrogate pair then decode the 6 byte \uXXXX escape
|
||||
// that follows. Returns the output slice and a new input index.
|
||||
func compactUnicodeEscape(input, output []byte, index int) ([]byte, int) {
|
||||
const (
|
||||
ESCAPES = "uuuuuuuubtnufruuuuuuuuuuuuuuuuuu"
|
||||
HEX = "0123456789ABCDEF"
|
||||
)
|
||||
// If there aren't enough bytes to decode the hex escape then return.
|
||||
if len(input)-index < 4 {
|
||||
return output, len(input)
|
||||
}
|
||||
// Decode the 4 hex digits.
|
||||
c := readHexDigits(input[index:])
|
||||
index += 4
|
||||
if c < ' ' {
|
||||
// If the character is less than SPACE 0x20 then it will need escaping.
|
||||
escape := ESCAPES[c]
|
||||
output = append(output, '\\', escape)
|
||||
if escape == 'u' {
|
||||
output = append(output, '0', '0', byte('0'+(c>>4)), HEX[c&0xF])
|
||||
}
|
||||
} else if c == '\\' || c == '"' {
|
||||
// Otherwise the character only needs escaping if it is a QUOTE '"' or BACKSLASH '\\'.
|
||||
output = append(output, '\\', byte(c))
|
||||
} else if c < 0xD800 || c >= 0xE000 {
|
||||
// If the character isn't a surrogate pair then encoded it directly as UTF-8.
|
||||
var buffer [4]byte
|
||||
n := utf8.EncodeRune(buffer[:], rune(c))
|
||||
output = append(output, buffer[:n]...)
|
||||
} else {
|
||||
// Otherwise the escaped character was the first part of a UTF-16 style surrogate pair.
|
||||
// The next 6 bytes MUST be a '\uXXXX'.
|
||||
// If there aren't enough bytes to decode the hex escape then return.
|
||||
if len(input)-index < 6 {
|
||||
return output, len(input)
|
||||
}
|
||||
// Decode the 4 hex digits from the '\uXXXX'.
|
||||
surrogate := readHexDigits(input[index+2:])
|
||||
index += 6
|
||||
// Reconstruct the UCS4 codepoint from the surrogates.
|
||||
codepoint := 0x10000 + (((c & 0x3FF) << 10) | (surrogate & 0x3FF))
|
||||
// Encode the charater as UTF-8.
|
||||
var buffer [4]byte
|
||||
n := utf8.EncodeRune(buffer[:], rune(codepoint))
|
||||
output = append(output, buffer[:n]...)
|
||||
}
|
||||
return output, index
|
||||
}
|
||||
|
||||
// Read 4 hex digits from the input slice.
|
||||
// Taken from https://github.com/NegativeMjark/indolentjson-rust/blob/8b959791fe2656a88f189c5d60d153be05fe3deb/src/readhex.rs#L21
|
||||
func readHexDigits(input []byte) uint32 {
|
||||
hex := binary.BigEndian.Uint32(input)
|
||||
// substract '0'
|
||||
hex -= 0x30303030
|
||||
// strip the higher bits, maps 'a' => 'A'
|
||||
hex &= 0x1F1F1F1F
|
||||
mask := hex & 0x10101010
|
||||
// subtract 'A' - 10 - '9' - 9 = 7 from the letters.
|
||||
hex -= mask >> 1
|
||||
hex += mask >> 4
|
||||
// collect the nibbles
|
||||
hex |= hex >> 4
|
||||
hex &= 0xFF00FF
|
||||
hex |= hex >> 8
|
||||
return hex & 0xFFFF
|
||||
}
|
||||
92
vendor/src/github.com/matrix-org/gomatrixserverlib/json_test.go
vendored
Normal file
92
vendor/src/github.com/matrix-org/gomatrixserverlib/json_test.go
vendored
Normal file
|
|
@ -0,0 +1,92 @@
|
|||
/* 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 (
|
||||
"testing"
|
||||
)
|
||||
|
||||
func testSortJSON(t *testing.T, input, want string) {
|
||||
got, err := SortJSON([]byte(input), nil)
|
||||
if err != nil {
|
||||
t.Error(err)
|
||||
}
|
||||
// Squash out the whitespace before comparing the JSON in case SortJSON had inserted whitespace.
|
||||
if string(CompactJSON(got, nil)) != want {
|
||||
t.Errorf("SortJSON(%q): want %q got %q", input, want, got)
|
||||
}
|
||||
}
|
||||
|
||||
func TestSortJSON(t *testing.T) {
|
||||
testSortJSON(t, `[{"b":"two","a":1}]`, `[{"a":1,"b":"two"}]`)
|
||||
testSortJSON(t, `{"B":{"4":4,"3":3},"A":{"1":1,"2":2}}`,
|
||||
`{"A":{"1":1,"2":2},"B":{"3":3,"4":4}}`)
|
||||
testSortJSON(t, `[true,false,null]`, `[true,false,null]`)
|
||||
testSortJSON(t, `[9007199254740991]`, `[9007199254740991]`)
|
||||
}
|
||||
|
||||
func testCompactJSON(t *testing.T, input, want string) {
|
||||
got := string(CompactJSON([]byte(input), nil))
|
||||
if got != want {
|
||||
t.Errorf("CompactJSON(%q): want %q got %q", input, want, got)
|
||||
}
|
||||
}
|
||||
|
||||
func TestCompactJSON(t *testing.T) {
|
||||
testCompactJSON(t, "{ }", "{}")
|
||||
|
||||
input := `["\u0000\u0001\u0002\u0003\u0004\u0005\u0006\u0007"]`
|
||||
want := input
|
||||
testCompactJSON(t, input, want)
|
||||
|
||||
input = `["\u0008\u0009\u000A\u000B\u000C\u000D\u000E\u000F"]`
|
||||
want = `["\b\t\n\u000B\f\r\u000E\u000F"]`
|
||||
testCompactJSON(t, input, want)
|
||||
|
||||
input = `["\u0010\u0011\u0012\u0013\u0014\u0015\u0016\u0017"]`
|
||||
want = input
|
||||
testCompactJSON(t, input, want)
|
||||
|
||||
input = `["\u0018\u0019\u001A\u001B\u001C\u001D\u001E\u001F"]`
|
||||
want = input
|
||||
testCompactJSON(t, input, want)
|
||||
|
||||
testCompactJSON(t, `["\u0061\u005C\u0042\u0022"]`, `["a\\B\""]`)
|
||||
testCompactJSON(t, `["\u0120"]`, "[\"\u0120\"]")
|
||||
testCompactJSON(t, `["\u0FFF"]`, "[\"\u0FFF\"]")
|
||||
testCompactJSON(t, `["\u1820"]`, "[\"\u1820\"]")
|
||||
testCompactJSON(t, `["\uFFFF"]`, "[\"\uFFFF\"]")
|
||||
testCompactJSON(t, `["\uD842\uDC20"]`, "[\"\U00020820\"]")
|
||||
testCompactJSON(t, `["\uDBFF\uDFFF"]`, "[\"\U0010FFFF\"]")
|
||||
|
||||
testCompactJSON(t, `["\"\\\/"]`, `["\"\\/"]`)
|
||||
}
|
||||
|
||||
func testReadHex(t *testing.T, input string, want uint32) {
|
||||
got := readHexDigits([]byte(input))
|
||||
if want != got {
|
||||
t.Errorf("readHexDigits(%q): want 0x%x got 0x%x", input, want, got)
|
||||
}
|
||||
}
|
||||
|
||||
func TestReadHex(t *testing.T) {
|
||||
testReadHex(t, "0123", 0x0123)
|
||||
testReadHex(t, "4567", 0x4567)
|
||||
testReadHex(t, "89AB", 0x89AB)
|
||||
testReadHex(t, "CDEF", 0xCDEF)
|
||||
testReadHex(t, "89ab", 0x89AB)
|
||||
testReadHex(t, "cdef", 0xCDEF)
|
||||
}
|
||||
214
vendor/src/github.com/matrix-org/gomatrixserverlib/keys.go
vendored
Normal file
214
vendor/src/github.com/matrix-org/gomatrixserverlib/keys.go
vendored
Normal file
|
|
@ -0,0 +1,214 @@
|
|||
/* 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 (
|
||||
"bufio"
|
||||
"bytes"
|
||||
"crypto/sha256"
|
||||
"crypto/tls"
|
||||
"encoding/json"
|
||||
"io/ioutil"
|
||||
"net"
|
||||
"net/http"
|
||||
"strings"
|
||||
"time"
|
||||
)
|
||||
|
||||
// ServerKeys are the ed25519 signing keys published by a matrix server.
|
||||
// Contains SHA256 fingerprints of the TLS X509 certificates used by the server.
|
||||
type ServerKeys struct {
|
||||
Raw []byte `json:"-"` // Copy of the raw JSON for signature checking.
|
||||
ServerName string `json:"server_name"` // The name of the server.
|
||||
TLSFingerprints []struct { // List of SHA256 fingerprints of X509 certificates.
|
||||
SHA256 Base64String `json:"sha256"`
|
||||
} `json:"tls_fingerprints"`
|
||||
VerifyKeys map[string]struct { // The current signing keys in use on this server.
|
||||
Key Base64String `json:"key"` // The public key.
|
||||
} `json:"verify_keys"`
|
||||
ValidUntilTS int64 `json:"valid_until_ts"` // When this result is valid until in milliseconds.
|
||||
OldVerifyKeys map[string]struct { // Old keys that are now only valid for checking historic events.
|
||||
Key Base64String `json:"key"` // The public key.
|
||||
ExpiredTS uint64 `json:"expired_ts"` // When this key stopped being valid for event signing.
|
||||
} `json:"old_verify_keys"`
|
||||
}
|
||||
|
||||
// FetchKeysDirect fetches the matrix keys directly from the given address.
|
||||
// Optionally sets a SNI header if ``sni`` is not empty.
|
||||
// Returns the server keys and the state of the TLS connection used to retrieve them.
|
||||
func FetchKeysDirect(serverName, addr, sni string) (*ServerKeys, *tls.ConnectionState, error) {
|
||||
// Create a TLS connection.
|
||||
tcpconn, err := net.Dial("tcp", addr)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
defer tcpconn.Close()
|
||||
tlsconn := tls.Client(tcpconn, &tls.Config{
|
||||
ServerName: sni,
|
||||
InsecureSkipVerify: true, // This must be specified even though the TLS library will ignore it.
|
||||
})
|
||||
if err = tlsconn.Handshake(); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
connectionState := tlsconn.ConnectionState()
|
||||
|
||||
// Write a GET /_matrix/key/v2/server down the connection.
|
||||
requestURL := "matrix://" + serverName + "/_matrix/key/v2/server"
|
||||
request, err := http.NewRequest("GET", requestURL, nil)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
request.Header.Set("Connection", "close")
|
||||
if err = request.Write(tlsconn); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
// Read the 200 OK from the server.
|
||||
response, err := http.ReadResponse(bufio.NewReader(tlsconn), request)
|
||||
if response != nil {
|
||||
defer response.Body.Close()
|
||||
}
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
var keys ServerKeys
|
||||
if keys.Raw, err = ioutil.ReadAll(response.Body); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
if err = json.Unmarshal(keys.Raw, &keys); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
return &keys, &connectionState, nil
|
||||
}
|
||||
|
||||
// Ed25519Checks are the checks that are applied to Ed25519 keys in ServerKey responses.
|
||||
type Ed25519Checks struct {
|
||||
ValidEd25519 bool // The verify key is valid Ed25519 keys.
|
||||
MatchingSignature bool // The verify key has a valid signature.
|
||||
}
|
||||
|
||||
// TLSFingerprintChecks are the checks that are applied to TLS fingerprints in ServerKey responses.
|
||||
type TLSFingerprintChecks struct {
|
||||
ValidSHA256 bool // The TLS fingerprint includes a valid SHA-256 hash.
|
||||
}
|
||||
|
||||
// KeyChecks are the checks that should be applied to ServerKey responses.
|
||||
type KeyChecks struct {
|
||||
AllChecksOK bool // Did all the checks pass?
|
||||
MatchingServerName bool // Does the server name match what was requested.
|
||||
FutureValidUntilTS bool // The valid until TS is in the future.
|
||||
HasEd25519Key bool // The server has at least one ed25519 key.
|
||||
AllEd25519ChecksOK *bool // All the Ed25519 checks are ok. or null if there weren't any to check.
|
||||
Ed25519Checks map[string]Ed25519Checks // Checks for Ed25519 keys.
|
||||
HasTLSFingerprint bool // The server has at least one fingerprint.
|
||||
AllTLSFingerprintChecksOK *bool // All the fingerpint checks are ok.
|
||||
TLSFingerprintChecks []TLSFingerprintChecks // Checks for TLS fingerprints.
|
||||
MatchingTLSFingerprint *bool // The TLS fingerprint for the connection matches one of the listed fingerprints.
|
||||
}
|
||||
|
||||
// CheckKeys checks the keys returned from a server to make sure they are valid.
|
||||
// If the checks pass then also return a map of key_id to Ed25519 public key and a list of SHA256 TLS fingerprints.
|
||||
func CheckKeys(serverName string, now time.Time, keys ServerKeys, connState *tls.ConnectionState) (
|
||||
checks KeyChecks, ed25519Keys map[string]Base64String, sha256Fingerprints []Base64String,
|
||||
) {
|
||||
checks.MatchingServerName = serverName == keys.ServerName
|
||||
checks.FutureValidUntilTS = now.UnixNano() < keys.ValidUntilTS*1000000
|
||||
checks.AllChecksOK = checks.MatchingServerName && checks.FutureValidUntilTS
|
||||
|
||||
ed25519Keys = checkVerifyKeys(keys, &checks)
|
||||
sha256Fingerprints = checkTLSFingerprints(keys, &checks)
|
||||
|
||||
// Only check the fingerprint if we have the TLS connection state.
|
||||
if connState != nil {
|
||||
// Check the peer certificates.
|
||||
matches := checkFingerprint(connState, sha256Fingerprints)
|
||||
checks.MatchingTLSFingerprint = &matches
|
||||
checks.AllChecksOK = checks.AllChecksOK && matches
|
||||
}
|
||||
|
||||
if !checks.AllChecksOK {
|
||||
sha256Fingerprints = nil
|
||||
ed25519Keys = nil
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func checkFingerprint(connState *tls.ConnectionState, sha256Fingerprints []Base64String) bool {
|
||||
if len(connState.PeerCertificates) == 0 {
|
||||
return false
|
||||
}
|
||||
cert := connState.PeerCertificates[0]
|
||||
digest := sha256.Sum256(cert.Raw)
|
||||
for _, fingerprint := range sha256Fingerprints {
|
||||
if bytes.Compare(digest[:], fingerprint) == 0 {
|
||||
return true
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
func checkVerifyKeys(keys ServerKeys, checks *KeyChecks) map[string]Base64String {
|
||||
allEd25519ChecksOK := true
|
||||
checks.Ed25519Checks = map[string]Ed25519Checks{}
|
||||
verifyKeys := map[string]Base64String{}
|
||||
for keyID, keyData := range keys.VerifyKeys {
|
||||
algorithm := strings.SplitN(keyID, ":", 2)[0]
|
||||
publicKey := keyData.Key
|
||||
if algorithm == "ed25519" {
|
||||
checks.HasEd25519Key = true
|
||||
checks.AllEd25519ChecksOK = &allEd25519ChecksOK
|
||||
entry := Ed25519Checks{
|
||||
ValidEd25519: len(publicKey) == 32,
|
||||
}
|
||||
if entry.ValidEd25519 {
|
||||
err := VerifyJSON(keys.ServerName, keyID, []byte(publicKey), keys.Raw)
|
||||
entry.MatchingSignature = err == nil
|
||||
}
|
||||
checks.Ed25519Checks[keyID] = entry
|
||||
if entry.MatchingSignature {
|
||||
verifyKeys[keyID] = publicKey
|
||||
} else {
|
||||
allEd25519ChecksOK = false
|
||||
}
|
||||
}
|
||||
}
|
||||
if checks.AllChecksOK {
|
||||
checks.AllChecksOK = checks.HasEd25519Key && allEd25519ChecksOK
|
||||
}
|
||||
return verifyKeys
|
||||
}
|
||||
|
||||
func checkTLSFingerprints(keys ServerKeys, checks *KeyChecks) []Base64String {
|
||||
var fingerprints []Base64String
|
||||
allTLSFingerprintChecksOK := true
|
||||
for _, fingerprint := range keys.TLSFingerprints {
|
||||
checks.HasTLSFingerprint = true
|
||||
checks.AllTLSFingerprintChecksOK = &allTLSFingerprintChecksOK
|
||||
entry := TLSFingerprintChecks{
|
||||
ValidSHA256: len(fingerprint.SHA256) == sha256.Size,
|
||||
}
|
||||
checks.TLSFingerprintChecks = append(checks.TLSFingerprintChecks, entry)
|
||||
if entry.ValidSHA256 {
|
||||
fingerprints = append(fingerprints, fingerprint.SHA256)
|
||||
} else {
|
||||
allTLSFingerprintChecksOK = false
|
||||
}
|
||||
}
|
||||
if checks.AllChecksOK {
|
||||
checks.AllChecksOK = checks.HasTLSFingerprint && allTLSFingerprintChecksOK
|
||||
}
|
||||
return fingerprints
|
||||
}
|
||||
161
vendor/src/github.com/matrix-org/gomatrixserverlib/redactevent.go
vendored
Normal file
161
vendor/src/github.com/matrix-org/gomatrixserverlib/redactevent.go
vendored
Normal file
|
|
@ -0,0 +1,161 @@
|
|||
/* 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"
|
||||
)
|
||||
|
||||
// rawJSON is a reimplementation of json.RawMessage that supports being used as a value type
|
||||
//
|
||||
// For example:
|
||||
//
|
||||
// jsonBytes, _ := json.Marshal(struct{
|
||||
// RawMessage json.RawMessage
|
||||
// RawJSON rawJSON
|
||||
// }{
|
||||
// json.RawMessage(`"Hello"`),
|
||||
// rawJSON(`"World"`),
|
||||
// })
|
||||
//
|
||||
// Results in:
|
||||
//
|
||||
// {"RawMessage":"IkhlbGxvIg==","RawJSON":"World"}
|
||||
//
|
||||
// See https://play.golang.org/p/FzhKIJP8-I for a full example.
|
||||
type rawJSON []byte
|
||||
|
||||
// MarshalJSON implements the json.Marshaller interface using a value receiver.
|
||||
// This means that rawJSON used as an embedded value will still encode correctly.
|
||||
func (r rawJSON) MarshalJSON() ([]byte, error) {
|
||||
return []byte(r), nil
|
||||
}
|
||||
|
||||
// UnmarshalJSON implements the json.Unmarshaller interface using a pointer receiver.
|
||||
func (r *rawJSON) UnmarshalJSON(data []byte) error {
|
||||
*r = rawJSON(data)
|
||||
return nil
|
||||
}
|
||||
|
||||
// redactEvent strips the user controlled fields from an event, but leaves the
|
||||
// fields necessary for authenticating the event.
|
||||
func redactEvent(eventJSON []byte) ([]byte, error) {
|
||||
|
||||
// createContent keeps the fields needed in a m.room.create event.
|
||||
// Create events need to keep the creator.
|
||||
// (In an ideal world they would keep the m.federate flag see matrix-org/synapse#1831)
|
||||
type createContent struct {
|
||||
Creator rawJSON `json:"creator,omitempty"`
|
||||
}
|
||||
|
||||
// joinRulesContent keeps the fields needed in a m.room.join_rules event.
|
||||
// Join rules events need to keep the join_rule key.
|
||||
type joinRulesContent struct {
|
||||
JoinRule rawJSON `json:"join_rule,omitempty"`
|
||||
}
|
||||
|
||||
// powerLevelContent keeps the fields needed in a m.room.power_levels event.
|
||||
// Power level events need to keep all the levels.
|
||||
type powerLevelContent struct {
|
||||
Users rawJSON `json:"users,omitempty"`
|
||||
UsersDefault rawJSON `json:"users_default,omitempty"`
|
||||
Events rawJSON `json:"events,omitempty"`
|
||||
EventsDefault rawJSON `json:"events_default,omitempty"`
|
||||
StateDefault rawJSON `json:"state_default,omitempty"`
|
||||
Ban rawJSON `json:"ban,omitempty"`
|
||||
Kick rawJSON `json:"kick,omitempty"`
|
||||
Redact rawJSON `json:"redact,omitempty"`
|
||||
}
|
||||
|
||||
// memberContent keeps the fields needed in a m.room.member event.
|
||||
// Member events keep the membership.
|
||||
// (In an ideal world they would keep the third_party_invite see matrix-org/synapse#1831)
|
||||
type memberContent struct {
|
||||
Membership rawJSON `json:"membership,omitempty"`
|
||||
}
|
||||
|
||||
// aliasesContent keeps the fields needed in a m.room.aliases event.
|
||||
// TODO: Alias events probably don't need to keep the aliases key, but we need to match synapse here.
|
||||
type aliasesContent struct {
|
||||
Aliases rawJSON `json:"aliases,omitempty"`
|
||||
}
|
||||
|
||||
// historyVisibilityContent keeps the fields needed in a m.room.history_visibility event
|
||||
// History visibility events need to keep the history_visibility key.
|
||||
type historyVisibilityContent struct {
|
||||
HistoryVisibility rawJSON `json:"history_visibility,omitempty"`
|
||||
}
|
||||
|
||||
// allContent keeps the union of all the content fields needed across all the event types.
|
||||
// All the content JSON keys we are keeping are distinct across the different event types.
|
||||
type allContent struct {
|
||||
createContent
|
||||
joinRulesContent
|
||||
powerLevelContent
|
||||
memberContent
|
||||
aliasesContent
|
||||
historyVisibilityContent
|
||||
}
|
||||
|
||||
// eventFields keeps the top level keys needed by all event types.
|
||||
// (In an ideal world they would include the "redacts" key for m.room.redaction events, see matrix-org/synapse#1831)
|
||||
// See https://github.com/matrix-org/synapse/blob/v0.18.7/synapse/events/utils.py#L42-L56 for the list of fields
|
||||
type eventFields struct {
|
||||
EventID rawJSON `json:"event_id,omitempty"`
|
||||
Sender rawJSON `json:"sender,omitempty"`
|
||||
RoomID rawJSON `json:"room_id,omitempty"`
|
||||
Hashes rawJSON `json:"hashes,omitempty"`
|
||||
Signatures rawJSON `json:"signatures,omitempty"`
|
||||
Content allContent `json:"content"`
|
||||
Type string `json:"type"`
|
||||
StateKey rawJSON `json:"state_key,omitempty"`
|
||||
Depth rawJSON `json:"depth,omitempty"`
|
||||
PrevEvents rawJSON `json:"prev_events,omitempty"`
|
||||
PrevState rawJSON `json:"prev_state,omitempty"`
|
||||
AuthEvents rawJSON `json:"auth_events,omitempty"`
|
||||
Origin rawJSON `json:"origin,omitempty"`
|
||||
OriginServerTS rawJSON `json:"origin_server_ts,omitempty"`
|
||||
Membership rawJSON `json:"membership,omitempty"`
|
||||
}
|
||||
|
||||
var event eventFields
|
||||
// Unmarshalling into a struct will discard any extra fields from the event.
|
||||
if err := json.Unmarshal(eventJSON, &event); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
var newContent allContent
|
||||
// Copy the content fields that we should keep for the event type.
|
||||
// By default we copy nothing leaving the content object empty.
|
||||
switch event.Type {
|
||||
case "m.room.create":
|
||||
newContent.createContent = event.Content.createContent
|
||||
case "m.room.member":
|
||||
newContent.memberContent = event.Content.memberContent
|
||||
case "m.room.join_rules":
|
||||
newContent.joinRulesContent = event.Content.joinRulesContent
|
||||
case "m.room.power_levels":
|
||||
newContent.powerLevelContent = event.Content.powerLevelContent
|
||||
case "m.room.history_visibility":
|
||||
newContent.historyVisibilityContent = event.Content.historyVisibilityContent
|
||||
case "m.room.aliases":
|
||||
newContent.aliasesContent = event.Content.aliasesContent
|
||||
}
|
||||
// Replace the content with our new filtered content.
|
||||
// This will zero out any keys that weren't copied in the switch statement above.
|
||||
event.Content = newContent
|
||||
// Return the redacted event encoded as JSON.
|
||||
return json.Marshal(&event)
|
||||
}
|
||||
108
vendor/src/github.com/matrix-org/gomatrixserverlib/resolve.go
vendored
Normal file
108
vendor/src/github.com/matrix-org/gomatrixserverlib/resolve.go
vendored
Normal file
|
|
@ -0,0 +1,108 @@
|
|||
/* 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 (
|
||||
"net"
|
||||
"strconv"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// A HostResult is the result of looking up the IP addresses for a host.
|
||||
type HostResult struct {
|
||||
CName string // The canonical name for the host.
|
||||
Addrs []string // The IP addresses for the host.
|
||||
Error error // If there was an error getting the IP addresses.
|
||||
}
|
||||
|
||||
// A DNSResult is the result of looking up a matrix server in DNS.
|
||||
type DNSResult struct {
|
||||
SRVCName string // The canonical name for the SRV record in DNS
|
||||
SRVRecords []*net.SRV // List of SRV record for the matrix server.
|
||||
SRVError error // If there was an error getting the SRV records.
|
||||
Hosts map[string]HostResult // The results of looking up the SRV record targets.
|
||||
Addrs []string // List of "<ip>:<port>" strings that the server is listening on. These strings can be passed to `net.Dial()`.
|
||||
}
|
||||
|
||||
// LookupServer looks up a matrix server in DNS.
|
||||
func LookupServer(serverName string) (*DNSResult, error) {
|
||||
var result DNSResult
|
||||
result.Hosts = map[string]HostResult{}
|
||||
|
||||
hosts := map[string][]net.SRV{}
|
||||
if strings.Index(serverName, ":") == -1 {
|
||||
// If there isn't an explicit port set then try to look up the SRV record.
|
||||
var err error
|
||||
result.SRVCName, result.SRVRecords, err = net.LookupSRV("matrix", "tcp", serverName)
|
||||
result.SRVError = err
|
||||
|
||||
if err != nil {
|
||||
if dnserr, ok := err.(*net.DNSError); ok {
|
||||
// If the error is a network timeout talking to the DNS server
|
||||
// then give up now rather than trying to fallback.
|
||||
if dnserr.Timeout() {
|
||||
return nil, err
|
||||
}
|
||||
// If there isn't a SRV record in DNS then fallback to "serverName:8448".
|
||||
hosts[serverName] = []net.SRV{net.SRV{
|
||||
Target: serverName,
|
||||
Port: 8448,
|
||||
}}
|
||||
}
|
||||
} else {
|
||||
// Group the SRV records by target host.
|
||||
for _, record := range result.SRVRecords {
|
||||
hosts[record.Target] = append(hosts[record.Target], *record)
|
||||
}
|
||||
}
|
||||
} else {
|
||||
// There is a explicit port set in the server name.
|
||||
// We don't need to look up any SRV records.
|
||||
host, portStr, err := net.SplitHostPort(serverName)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
var port uint64
|
||||
port, err = strconv.ParseUint(portStr, 10, 16)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
hosts[host] = []net.SRV{net.SRV{
|
||||
Target: host,
|
||||
Port: uint16(port),
|
||||
}}
|
||||
}
|
||||
// Look up the IP addresses for each host.
|
||||
for host, records := range hosts {
|
||||
// Ignore any DNS errors when looking up the CNAME. We only are interested in it for debugging.
|
||||
cname, _ := net.LookupCNAME(host)
|
||||
addrs, err := net.LookupHost(host)
|
||||
result.Hosts[host] = HostResult{
|
||||
CName: cname,
|
||||
Addrs: addrs,
|
||||
Error: err,
|
||||
}
|
||||
// For each SRV record, for each IP address add a "<ip>:<port>" entry to the list of addresses.
|
||||
for _, record := range records {
|
||||
for _, addr := range addrs {
|
||||
ipPort := net.JoinHostPort(addr, strconv.Itoa(int(record.Port)))
|
||||
result.Addrs = append(result.Addrs, ipPort)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return &result, nil
|
||||
}
|
||||
120
vendor/src/github.com/matrix-org/gomatrixserverlib/signing.go
vendored
Normal file
120
vendor/src/github.com/matrix-org/gomatrixserverlib/signing.go
vendored
Normal file
|
|
@ -0,0 +1,120 @@
|
|||
/* 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"
|
||||
"fmt"
|
||||
"golang.org/x/crypto/ed25519"
|
||||
)
|
||||
|
||||
// SignJSON signs a JSON object returning a copy signed with the given key.
|
||||
// https://matrix.org/docs/spec/server_server/unstable.html#signing-json
|
||||
func SignJSON(signingName, keyID string, privateKey ed25519.PrivateKey, message []byte) ([]byte, error) {
|
||||
var object map[string]*json.RawMessage
|
||||
var signatures map[string]map[string]Base64String
|
||||
if err := json.Unmarshal(message, &object); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
rawUnsigned, hasUnsigned := object["unsigned"]
|
||||
delete(object, "unsigned")
|
||||
|
||||
if rawSignatures := object["signatures"]; rawSignatures != nil {
|
||||
if err := json.Unmarshal(*rawSignatures, &signatures); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
delete(object, "signatures")
|
||||
} else {
|
||||
signatures = map[string]map[string]Base64String{}
|
||||
}
|
||||
|
||||
unsorted, err := json.Marshal(object)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
canonical, err := CanonicalJSON(unsorted)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
signature := Base64String(ed25519.Sign(privateKey, canonical))
|
||||
|
||||
signaturesForEntity := signatures[signingName]
|
||||
if signaturesForEntity != nil {
|
||||
signaturesForEntity[keyID] = signature
|
||||
} else {
|
||||
signatures[signingName] = map[string]Base64String{keyID: signature}
|
||||
}
|
||||
|
||||
var rawSignatures json.RawMessage
|
||||
rawSignatures, err = json.Marshal(signatures)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
object["signatures"] = &rawSignatures
|
||||
if hasUnsigned {
|
||||
object["unsigned"] = rawUnsigned
|
||||
}
|
||||
|
||||
return json.Marshal(object)
|
||||
}
|
||||
|
||||
// VerifyJSON checks that the entity has signed the message using a particular key.
|
||||
func VerifyJSON(signingName, keyID string, publicKey ed25519.PublicKey, message []byte) error {
|
||||
var object map[string]*json.RawMessage
|
||||
var signatures map[string]map[string]Base64String
|
||||
if err := json.Unmarshal(message, &object); err != nil {
|
||||
return err
|
||||
}
|
||||
delete(object, "unsigned")
|
||||
|
||||
if object["signatures"] == nil {
|
||||
return fmt.Errorf("No signatures")
|
||||
}
|
||||
|
||||
if err := json.Unmarshal(*object["signatures"], &signatures); err != nil {
|
||||
return err
|
||||
}
|
||||
delete(object, "signatures")
|
||||
|
||||
signature, ok := signatures[signingName][keyID]
|
||||
if !ok {
|
||||
return fmt.Errorf("No signature from %q with ID %q", signingName, keyID)
|
||||
}
|
||||
|
||||
if len(signature) != ed25519.SignatureSize {
|
||||
return fmt.Errorf("Bad signature length from %q with ID %q", signingName, keyID)
|
||||
}
|
||||
|
||||
unsorted, err := json.Marshal(object)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
canonical, err := CanonicalJSON(unsorted)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if !ed25519.Verify(publicKey, canonical, signature) {
|
||||
return fmt.Errorf("Bad signature from %q with ID %q", signingName, keyID)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
223
vendor/src/github.com/matrix-org/gomatrixserverlib/signing_test.go
vendored
Normal file
223
vendor/src/github.com/matrix-org/gomatrixserverlib/signing_test.go
vendored
Normal file
|
|
@ -0,0 +1,223 @@
|
|||
/* 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 (
|
||||
"bytes"
|
||||
"encoding/base64"
|
||||
"encoding/json"
|
||||
"testing"
|
||||
|
||||
"golang.org/x/crypto/ed25519"
|
||||
)
|
||||
|
||||
func TestVerifyJSON(t *testing.T) {
|
||||
// Check JSON verification using the test vectors from https://matrix.org/docs/spec/appendices.html
|
||||
seed, err := base64.RawStdEncoding.DecodeString("YJDBA9Xnr2sVqXD9Vj7XVUnmFZcZrlw8Md7kMW+3XA1")
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
random := bytes.NewBuffer(seed)
|
||||
entityName := "domain"
|
||||
keyID := "ed25519:1"
|
||||
|
||||
publicKey, _, err := ed25519.GenerateKey(random)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
testVerifyOK := func(input string) {
|
||||
err := VerifyJSON(entityName, keyID, publicKey, []byte(input))
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
testVerifyNotOK := func(reason, input string) {
|
||||
err := VerifyJSON(entityName, keyID, publicKey, []byte(input))
|
||||
if err == nil {
|
||||
t.Fatalf("Expected VerifyJSON to fail for input %v because %v", input, reason)
|
||||
}
|
||||
}
|
||||
|
||||
testVerifyOK(`{
|
||||
"signatures": {
|
||||
"domain": {
|
||||
"ed25519:1": "K8280/U9SSy9IVtjBuVeLr+HpOB4BQFWbg+UZaADMtTdGYI7Geitb76LTrr5QV/7Xg4ahLwYGYZzuHGZKM5ZAQ"
|
||||
}
|
||||
}
|
||||
}`)
|
||||
|
||||
testVerifyNotOK("the json is modified", `{
|
||||
"a new key": "a new value",
|
||||
"signatures": {
|
||||
"domain": {
|
||||
"ed25519:1": "K8280/U9SSy9IVtjBuVeLr+HpOB4BQFWbg+UZaADMtTdGYI7Geitb76LTrr5QV/7Xg4ahLwYGYZzuHGZKM5ZAQ"
|
||||
}
|
||||
}
|
||||
}`)
|
||||
testVerifyNotOK("the signature is modified", `{
|
||||
"a new key": "a new value",
|
||||
"signatures": {
|
||||
"domain": {
|
||||
"ed25519:1": "modifiedSSy9IVtjBuVeLr+HpOB4BQFWbg+UZaADMtTdGYI7Geitb76LTrr5QV/7Xg4ahLwYGYZzuHGZKM5ZAQ"
|
||||
}
|
||||
}
|
||||
}`)
|
||||
testVerifyNotOK("there are no signatures", `{}`)
|
||||
testVerifyNotOK("there are no signatures", `{"signatures": {}}`)
|
||||
|
||||
testVerifyNotOK("there are not signatures for domain", `{
|
||||
"signatures": {"domain": {}}
|
||||
}`)
|
||||
testVerifyNotOK("the signature has the wrong key_id", `{
|
||||
"signatures": { "domain": {
|
||||
"ed25519:2":"KqmLSbO39/Bzb0QIYE82zqLwsA+PDzYIpIRA2sRQ4sL53+sN6/fpNSoqE7BP7vBZhG6kYdD13EIMJpvhJI+6Bw"
|
||||
}}
|
||||
}`)
|
||||
testVerifyNotOK("the signature is too short for ed25519", `{"signatures": {"domain": {"ed25519:1":"not/a/valid/signature"}}}`)
|
||||
testVerifyNotOK("the signature has base64 padding that it shouldn't have", `{
|
||||
"signatures": { "domain": {
|
||||
"ed25519:1": "K8280/U9SSy9IVtjBuVeLr+HpOB4BQFWbg+UZaADMtTdGYI7Geitb76LTrr5QV/7Xg4ahLwYGYZzuHGZKM5ZAQ=="
|
||||
}}
|
||||
}`)
|
||||
}
|
||||
|
||||
func TestSignJSON(t *testing.T) {
|
||||
random := bytes.NewBuffer([]byte("Some 32 randomly generated bytes"))
|
||||
entityName := "example.com"
|
||||
keyID := "ed25519:my_key_id"
|
||||
input := []byte(`{"this":"is","my":"message"}`)
|
||||
|
||||
publicKey, privateKey, err := ed25519.GenerateKey(random)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
signed, err := SignJSON(entityName, keyID, privateKey, input)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
err = VerifyJSON(entityName, keyID, publicKey, signed)
|
||||
if err != nil {
|
||||
t.Errorf("VerifyJSON(%q)", signed)
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
func IsJSONEqual(a, b []byte) bool {
|
||||
canonicalA, err := CanonicalJSON(a)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
canonicalB, err := CanonicalJSON(b)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
return string(canonicalA) == string(canonicalB)
|
||||
}
|
||||
|
||||
func TestSignJSONTestVectors(t *testing.T) {
|
||||
// Check JSON signing using the test vectors from https://matrix.org/docs/spec/appendices.html
|
||||
seed, err := base64.RawStdEncoding.DecodeString("YJDBA9Xnr2sVqXD9Vj7XVUnmFZcZrlw8Md7kMW+3XA1")
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
random := bytes.NewBuffer(seed)
|
||||
entityName := "domain"
|
||||
keyID := "ed25519:1"
|
||||
|
||||
_, privateKey, err := ed25519.GenerateKey(random)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
testSign := func(input string, want string) {
|
||||
signed, err := SignJSON(entityName, keyID, privateKey, []byte(input))
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if !IsJSONEqual([]byte(want), signed) {
|
||||
t.Fatalf("VerifyJSON(%q): want %v got %v", input, want, string(signed))
|
||||
}
|
||||
}
|
||||
|
||||
testSign(`{}`, `{
|
||||
"signatures":{
|
||||
"domain":{
|
||||
"ed25519:1":"K8280/U9SSy9IVtjBuVeLr+HpOB4BQFWbg+UZaADMtTdGYI7Geitb76LTrr5QV/7Xg4ahLwYGYZzuHGZKM5ZAQ"
|
||||
}
|
||||
}
|
||||
}`)
|
||||
|
||||
testSign(`{"one":1,"two":"Two"}`, `{
|
||||
"one": 1,
|
||||
"signatures": {
|
||||
"domain": {
|
||||
"ed25519:1": "KqmLSbO39/Bzb0QIYE82zqLwsA+PDzYIpIRA2sRQ4sL53+sN6/fpNSoqE7BP7vBZhG6kYdD13EIMJpvhJI+6Bw"
|
||||
}
|
||||
},
|
||||
"two": "Two"
|
||||
}`)
|
||||
}
|
||||
|
||||
type MyMessage struct {
|
||||
Unsigned *json.RawMessage `json:"unsigned"`
|
||||
Content *json.RawMessage `json:"content"`
|
||||
Signatures *json.RawMessage `json:"signature,omitempty"`
|
||||
}
|
||||
|
||||
func TestSignJSONWithUnsigned(t *testing.T) {
|
||||
random := bytes.NewBuffer([]byte("Some 32 randomly generated bytes"))
|
||||
entityName := "example.com"
|
||||
keyID := "ed25519:my_key_id"
|
||||
content := json.RawMessage(`{"signed":"data"}`)
|
||||
unsigned := json.RawMessage(`{"unsigned":"data"}`)
|
||||
message := MyMessage{&unsigned, &content, nil}
|
||||
|
||||
input, err := json.Marshal(&message)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
publicKey, privateKey, err := ed25519.GenerateKey(random)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
signed, err := SignJSON(entityName, keyID, privateKey, input)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if err2 := json.Unmarshal(signed, &message); err2 != nil {
|
||||
t.Fatal(err2)
|
||||
}
|
||||
newUnsigned := json.RawMessage(`{"different":"data"}`)
|
||||
message.Unsigned = &newUnsigned
|
||||
input, err = json.Marshal(&message)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
err = VerifyJSON(entityName, keyID, publicKey, signed)
|
||||
if err != nil {
|
||||
t.Errorf("VerifyJSON(%q)", signed)
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
292
vendor/src/github.com/matrix-org/gomatrixserverlib/stateresolution.go
vendored
Normal file
292
vendor/src/github.com/matrix-org/gomatrixserverlib/stateresolution.go
vendored
Normal file
|
|
@ -0,0 +1,292 @@
|
|||
package gomatrixserverlib
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"crypto/sha1"
|
||||
"fmt"
|
||||
"sort"
|
||||
)
|
||||
|
||||
// ResolveStateConflicts takes a list of state events with conflicting state keys
|
||||
// and works out which event should be used for each state event.
|
||||
func ResolveStateConflicts(conflicted []Event, authEvents []Event) []Event {
|
||||
var r stateResolver
|
||||
// Group the conflicted events by type and state key.
|
||||
r.addConflicted(conflicted)
|
||||
// Add the unconflicted auth events needed for auth checks.
|
||||
for i := range authEvents {
|
||||
r.addAuthEvent(&authEvents[i])
|
||||
}
|
||||
// Resolve the conflicted auth events.
|
||||
r.resolveAndAddAuthBlocks([][]Event{r.creates})
|
||||
r.resolveAndAddAuthBlocks([][]Event{r.powerLevels})
|
||||
r.resolveAndAddAuthBlocks([][]Event{r.joinRules})
|
||||
r.resolveAndAddAuthBlocks(r.thirdPartyInvites)
|
||||
r.resolveAndAddAuthBlocks(r.members)
|
||||
// Resolve any other conflicted state events.
|
||||
for _, block := range r.others {
|
||||
if event := r.resolveNormalBlock(block); event != nil {
|
||||
r.result = append(r.result, *event)
|
||||
}
|
||||
}
|
||||
return r.result
|
||||
}
|
||||
|
||||
// A stateResolver tracks the internal state of the state resolution algorithm
|
||||
// It has 3 sections:
|
||||
//
|
||||
// * Lists of lists of events to resolve grouped by event type and state key.
|
||||
// * The resolved auth events grouped by type and state key.
|
||||
// * A List of resolved events.
|
||||
//
|
||||
// It implements the AuthEvents interface and can be used for running auth checks.
|
||||
type stateResolver struct {
|
||||
// Lists of lists of events to resolve grouped by event type and state key:
|
||||
// * creates, powerLevels, joinRules have empty state keys.
|
||||
// * members and thirdPartyInvites are grouped by state key.
|
||||
// * the others are grouped by the pair of type and state key.
|
||||
creates []Event
|
||||
powerLevels []Event
|
||||
joinRules []Event
|
||||
thirdPartyInvites [][]Event
|
||||
members [][]Event
|
||||
others [][]Event
|
||||
// The resolved auth events grouped by type and state key.
|
||||
resolvedCreate *Event
|
||||
resolvedPowerLevels *Event
|
||||
resolvedJoinRules *Event
|
||||
resolvedThirdPartyInvites map[string]*Event
|
||||
resolvedMembers map[string]*Event
|
||||
// The list of resolved events.
|
||||
// This will contain one entry for each conflicted event type and state key.
|
||||
result []Event
|
||||
}
|
||||
|
||||
func (r *stateResolver) Create() (*Event, error) {
|
||||
return r.resolvedCreate, nil
|
||||
}
|
||||
|
||||
func (r *stateResolver) PowerLevels() (*Event, error) {
|
||||
return r.resolvedPowerLevels, nil
|
||||
}
|
||||
|
||||
func (r *stateResolver) JoinRules() (*Event, error) {
|
||||
return r.resolvedJoinRules, nil
|
||||
}
|
||||
|
||||
func (r *stateResolver) ThirdPartyInvite(key string) (*Event, error) {
|
||||
return r.resolvedThirdPartyInvites[key], nil
|
||||
}
|
||||
|
||||
func (r *stateResolver) Member(key string) (*Event, error) {
|
||||
return r.resolvedMembers[key], nil
|
||||
}
|
||||
|
||||
func (r *stateResolver) addConflicted(events []Event) {
|
||||
type conflictKey struct {
|
||||
eventType string
|
||||
stateKey string
|
||||
}
|
||||
offsets := map[conflictKey]int{}
|
||||
// Split up the conflicted events into blocks with the same type and state key.
|
||||
// Separate the auth events into specifically named lists because they have
|
||||
// special rules for state resolution.
|
||||
for _, event := range events {
|
||||
key := conflictKey{event.Type(), *event.StateKey()}
|
||||
// Work out which block to add the event to.
|
||||
// By default we add the event to a block in the others list.
|
||||
blockList := &r.others
|
||||
switch key.eventType {
|
||||
case "m.room.create":
|
||||
if key.stateKey == "" {
|
||||
r.creates = append(r.creates, event)
|
||||
continue
|
||||
}
|
||||
case "m.room.power_levels":
|
||||
if key.stateKey == "" {
|
||||
r.powerLevels = append(r.powerLevels, event)
|
||||
continue
|
||||
}
|
||||
case "m.room.join_rules":
|
||||
if key.stateKey == "" {
|
||||
r.joinRules = append(r.joinRules, event)
|
||||
continue
|
||||
}
|
||||
case "m.room.member":
|
||||
blockList = &r.members
|
||||
case "m.room.third_party_invite":
|
||||
blockList = &r.thirdPartyInvites
|
||||
}
|
||||
// We need to find an entry for the state key in a block list.
|
||||
offset, ok := offsets[key]
|
||||
if !ok {
|
||||
// This is the first time we've seen that state key so we add a
|
||||
// new block to the block list.
|
||||
offset = len(*blockList)
|
||||
*blockList = append(*blockList, nil)
|
||||
}
|
||||
// Get the address of the block in the block list.
|
||||
block := &(*blockList)[offset]
|
||||
// Add the event to the block.
|
||||
*block = append(*block, event)
|
||||
}
|
||||
}
|
||||
|
||||
// Add an event to the resolved auth events.
|
||||
func (r *stateResolver) addAuthEvent(event *Event) {
|
||||
switch event.Type() {
|
||||
case "m.room.create":
|
||||
if event.StateKeyEquals("") {
|
||||
r.resolvedCreate = event
|
||||
}
|
||||
case "m.room.power_levels":
|
||||
if event.StateKeyEquals("") {
|
||||
r.resolvedPowerLevels = event
|
||||
}
|
||||
case "m.room.join_rules":
|
||||
if event.StateKeyEquals("") {
|
||||
r.resolvedJoinRules = event
|
||||
}
|
||||
case "m.room.member":
|
||||
r.resolvedMembers[*event.StateKey()] = event
|
||||
case "m.room.third_party_invite":
|
||||
r.resolvedThirdPartyInvites[*event.StateKey()] = event
|
||||
default:
|
||||
panic(fmt.Errorf("Unexpected auth event with type %q", event.Type()))
|
||||
}
|
||||
}
|
||||
|
||||
// Remove the auth event with the given type and state key.
|
||||
func (r *stateResolver) removeAuthEvent(eventType, stateKey string) {
|
||||
switch eventType {
|
||||
case "m.room.create":
|
||||
if stateKey == "" {
|
||||
r.resolvedCreate = nil
|
||||
}
|
||||
case "m.room.power_levels":
|
||||
if stateKey == "" {
|
||||
r.resolvedPowerLevels = nil
|
||||
}
|
||||
case "m.room.join_rules":
|
||||
if stateKey == "" {
|
||||
r.resolvedJoinRules = nil
|
||||
}
|
||||
case "m.room.member":
|
||||
r.resolvedMembers[stateKey] = nil
|
||||
case "m.room.third_party_invite":
|
||||
r.resolvedThirdPartyInvites[stateKey] = nil
|
||||
default:
|
||||
panic(fmt.Errorf("Unexpected auth event with type %q", eventType))
|
||||
}
|
||||
}
|
||||
|
||||
// resolveAndAddAuthBlocks resolves each block of conflicting auth state events in a list of blocks
|
||||
// where all the blocks have the same event type.
|
||||
// Once every block has been resolved the resulting events are added to the events used for auth checks.
|
||||
// This is called once per auth event type and state key pair.
|
||||
func (r *stateResolver) resolveAndAddAuthBlocks(blocks [][]Event) {
|
||||
start := len(r.result)
|
||||
for _, block := range blocks {
|
||||
if event := r.resolveAuthBlock(block); event != nil {
|
||||
r.result = append(r.result, *event)
|
||||
}
|
||||
}
|
||||
// Only add the events to the auth events once all of the events with that type have been resolved.
|
||||
// (SPEC: This is done to avoid the result of state resolution depending on the iteration order)
|
||||
for i := start; i < len(r.result); i++ {
|
||||
r.addAuthEvent(&r.result[i])
|
||||
}
|
||||
}
|
||||
|
||||
// resolveAuthBlock resolves a block of auth events with the same state key to a single event.
|
||||
func (r *stateResolver) resolveAuthBlock(events []Event) *Event {
|
||||
// Sort the events by depth and sha1 of event ID
|
||||
block := sortConflictedEventsByDepthAndSHA1(events)
|
||||
|
||||
// Pick the "oldest" event, that is the one with the lowest depth, as the first candidate.
|
||||
// If none of the newer events pass auth checks against this event then we pick the "oldest" event.
|
||||
// (SPEC: This ensures that we always pick a state event for this type and state key.
|
||||
// Note that if all the events fail auth checks we will still pick the "oldest" event.)
|
||||
result := block[0].event
|
||||
// Temporarily add the candidate event to the auth events.
|
||||
r.addAuthEvent(result)
|
||||
for i := 1; i < len(block); i++ {
|
||||
event := block[i].event
|
||||
// Check if the next event passes authentication checks against the current candidate.
|
||||
// (SPEC: This ensures that "ban" events cannot be replaced by "join" events through a conflict)
|
||||
if Allowed(*event, r) == nil {
|
||||
// If the event passes authentication checks pick it as the current candidate.
|
||||
// (SPEC: This prefers newer events so that we don't flip a valid state back to a previous version)
|
||||
result = event
|
||||
r.addAuthEvent(result)
|
||||
} else {
|
||||
// If the authentication check fails then we stop iterating the list and return the current candidate.
|
||||
break
|
||||
}
|
||||
}
|
||||
// Discard the event from the auth events.
|
||||
// We'll add it back later when all events of the same type have been resolved.
|
||||
// (SPEC: This is done to avoid the result of state resolution depending on the iteration order)
|
||||
r.removeAuthEvent(result.Type(), *result.StateKey())
|
||||
return result
|
||||
}
|
||||
|
||||
// resolveNormalBlock resolves a block of normal state events with the same state key to a single event.
|
||||
func (r *stateResolver) resolveNormalBlock(events []Event) *Event {
|
||||
// Sort the events by depth and sha1 of event ID
|
||||
block := sortConflictedEventsByDepthAndSHA1(events)
|
||||
// Start at the "newest" event, that is the one with the highest depth, and go
|
||||
// backward through the list until we find one that passes authentication checks.
|
||||
// (SPEC: This prefers newer events so that we don't flip a valid state back to a previous version)
|
||||
for i := len(block) - 1; i > 0; i-- {
|
||||
event := block[i].event
|
||||
if Allowed(*event, r) == nil {
|
||||
return event
|
||||
}
|
||||
}
|
||||
// If all the auth checks for newer events fail then we pick the oldest event.
|
||||
// (SPEC: This ensures that we always pick a state event for this type and state key.
|
||||
// Note that if all the events fail auth checks we will still pick the "oldest" event.)
|
||||
return block[0].event
|
||||
}
|
||||
|
||||
// sortConflictedEventsByDepthAndSHA1 sorts by ascending depth and descending sha1 of event ID.
|
||||
func sortConflictedEventsByDepthAndSHA1(events []Event) []conflictedEvent {
|
||||
block := make([]conflictedEvent, len(events))
|
||||
for i := range events {
|
||||
event := &events[i]
|
||||
block[i] = conflictedEvent{
|
||||
depth: event.Depth(),
|
||||
eventIDSHA1: sha1.Sum([]byte(event.EventID())),
|
||||
event: event,
|
||||
}
|
||||
}
|
||||
sort.Sort(conflictedEventSorter(block))
|
||||
return block
|
||||
}
|
||||
|
||||
// A conflictedEvent is used to sort the events in a block by ascending depth and descending sha1 of event ID.
|
||||
// (SPEC: We use the SHA1 of the event ID as an arbitrary tie breaker between events with the same depth)
|
||||
type conflictedEvent struct {
|
||||
depth int64
|
||||
eventIDSHA1 [sha1.Size]byte
|
||||
event *Event
|
||||
}
|
||||
|
||||
// A conflictedEventSorter is used to sort the events using sort.Sort.
|
||||
type conflictedEventSorter []conflictedEvent
|
||||
|
||||
func (s conflictedEventSorter) Len() int {
|
||||
return len(s)
|
||||
}
|
||||
|
||||
func (s conflictedEventSorter) Less(i, j int) bool {
|
||||
if s[i].depth == s[j].depth {
|
||||
return bytes.Compare(s[i].eventIDSHA1[:], s[j].eventIDSHA1[:]) > 0
|
||||
}
|
||||
return s[i].depth < s[j].depth
|
||||
}
|
||||
|
||||
func (s conflictedEventSorter) Swap(i, j int) {
|
||||
s[i], s[j] = s[j], s[i]
|
||||
}
|
||||
36
vendor/src/github.com/matrix-org/gomatrixserverlib/stateresolution_test.go
vendored
Normal file
36
vendor/src/github.com/matrix-org/gomatrixserverlib/stateresolution_test.go
vendored
Normal file
|
|
@ -0,0 +1,36 @@
|
|||
package gomatrixserverlib
|
||||
|
||||
import (
|
||||
"testing"
|
||||
)
|
||||
|
||||
const (
|
||||
sha1OfEventID1A = "\xe5\x89,\xa2\x1cF<&\xf3\rf}\xde\xa5\xef;\xddK\xaaS"
|
||||
sha1OfEventID2A = "\xa4\xe4\x10\x1b}\x1a\xf9`\x94\x10\xa3\x84+\xae\x06\x8d\x16A\xfc>"
|
||||
sha1OfEventID3B = "\xca\xe8\xde\xb6\xa3\xb6\xee\x01\xc4\xbc\xd0/\x1b\x1c2\x0c\xd3\xa4\xe9\xcb"
|
||||
)
|
||||
|
||||
func TestConflictEventSorter(t *testing.T) {
|
||||
input := []Event{
|
||||
Event{fields: eventFields{Depth: 1, EventID: "@1:a"}},
|
||||
Event{fields: eventFields{Depth: 2, EventID: "@2:a"}},
|
||||
Event{fields: eventFields{Depth: 2, EventID: "@3:b"}},
|
||||
}
|
||||
got := sortConflictedEventsByDepthAndSHA1(input)
|
||||
want := []conflictedEvent{
|
||||
conflictedEvent{depth: 1, event: &input[0]},
|
||||
conflictedEvent{depth: 2, event: &input[2]},
|
||||
conflictedEvent{depth: 2, event: &input[1]},
|
||||
}
|
||||
copy(want[0].eventIDSHA1[:], sha1OfEventID1A)
|
||||
copy(want[1].eventIDSHA1[:], sha1OfEventID3B)
|
||||
copy(want[2].eventIDSHA1[:], sha1OfEventID2A)
|
||||
if len(want) != len(got) {
|
||||
t.Fatalf("Different length: wanted %d, got %d", len(want), len(got))
|
||||
}
|
||||
for i := range want {
|
||||
if want[i] != got[i] {
|
||||
t.Fatalf("Different element at index %d: wanted %#v got %#v", i, want[i], got[i])
|
||||
}
|
||||
}
|
||||
}
|
||||
181
vendor/src/golang.org/x/crypto/ed25519/ed25519.go
vendored
Normal file
181
vendor/src/golang.org/x/crypto/ed25519/ed25519.go
vendored
Normal file
|
|
@ -0,0 +1,181 @@
|
|||
// Copyright 2016 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// Package ed25519 implements the Ed25519 signature algorithm. See
|
||||
// http://ed25519.cr.yp.to/.
|
||||
//
|
||||
// These functions are also compatible with the “Ed25519” function defined in
|
||||
// https://tools.ietf.org/html/draft-irtf-cfrg-eddsa-05.
|
||||
package ed25519
|
||||
|
||||
// This code is a port of the public domain, “ref10” implementation of ed25519
|
||||
// from SUPERCOP.
|
||||
|
||||
import (
|
||||
"crypto"
|
||||
cryptorand "crypto/rand"
|
||||
"crypto/sha512"
|
||||
"crypto/subtle"
|
||||
"errors"
|
||||
"io"
|
||||
"strconv"
|
||||
|
||||
"golang.org/x/crypto/ed25519/internal/edwards25519"
|
||||
)
|
||||
|
||||
const (
|
||||
// PublicKeySize is the size, in bytes, of public keys as used in this package.
|
||||
PublicKeySize = 32
|
||||
// PrivateKeySize is the size, in bytes, of private keys as used in this package.
|
||||
PrivateKeySize = 64
|
||||
// SignatureSize is the size, in bytes, of signatures generated and verified by this package.
|
||||
SignatureSize = 64
|
||||
)
|
||||
|
||||
// PublicKey is the type of Ed25519 public keys.
|
||||
type PublicKey []byte
|
||||
|
||||
// PrivateKey is the type of Ed25519 private keys. It implements crypto.Signer.
|
||||
type PrivateKey []byte
|
||||
|
||||
// Public returns the PublicKey corresponding to priv.
|
||||
func (priv PrivateKey) Public() crypto.PublicKey {
|
||||
publicKey := make([]byte, PublicKeySize)
|
||||
copy(publicKey, priv[32:])
|
||||
return PublicKey(publicKey)
|
||||
}
|
||||
|
||||
// Sign signs the given message with priv.
|
||||
// Ed25519 performs two passes over messages to be signed and therefore cannot
|
||||
// handle pre-hashed messages. Thus opts.HashFunc() must return zero to
|
||||
// indicate the message hasn't been hashed. This can be achieved by passing
|
||||
// crypto.Hash(0) as the value for opts.
|
||||
func (priv PrivateKey) Sign(rand io.Reader, message []byte, opts crypto.SignerOpts) (signature []byte, err error) {
|
||||
if opts.HashFunc() != crypto.Hash(0) {
|
||||
return nil, errors.New("ed25519: cannot sign hashed message")
|
||||
}
|
||||
|
||||
return Sign(priv, message), nil
|
||||
}
|
||||
|
||||
// GenerateKey generates a public/private key pair using entropy from rand.
|
||||
// If rand is nil, crypto/rand.Reader will be used.
|
||||
func GenerateKey(rand io.Reader) (publicKey PublicKey, privateKey PrivateKey, err error) {
|
||||
if rand == nil {
|
||||
rand = cryptorand.Reader
|
||||
}
|
||||
|
||||
privateKey = make([]byte, PrivateKeySize)
|
||||
publicKey = make([]byte, PublicKeySize)
|
||||
_, err = io.ReadFull(rand, privateKey[:32])
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
digest := sha512.Sum512(privateKey[:32])
|
||||
digest[0] &= 248
|
||||
digest[31] &= 127
|
||||
digest[31] |= 64
|
||||
|
||||
var A edwards25519.ExtendedGroupElement
|
||||
var hBytes [32]byte
|
||||
copy(hBytes[:], digest[:])
|
||||
edwards25519.GeScalarMultBase(&A, &hBytes)
|
||||
var publicKeyBytes [32]byte
|
||||
A.ToBytes(&publicKeyBytes)
|
||||
|
||||
copy(privateKey[32:], publicKeyBytes[:])
|
||||
copy(publicKey, publicKeyBytes[:])
|
||||
|
||||
return publicKey, privateKey, nil
|
||||
}
|
||||
|
||||
// Sign signs the message with privateKey and returns a signature. It will
|
||||
// panic if len(privateKey) is not PrivateKeySize.
|
||||
func Sign(privateKey PrivateKey, message []byte) []byte {
|
||||
if l := len(privateKey); l != PrivateKeySize {
|
||||
panic("ed25519: bad private key length: " + strconv.Itoa(l))
|
||||
}
|
||||
|
||||
h := sha512.New()
|
||||
h.Write(privateKey[:32])
|
||||
|
||||
var digest1, messageDigest, hramDigest [64]byte
|
||||
var expandedSecretKey [32]byte
|
||||
h.Sum(digest1[:0])
|
||||
copy(expandedSecretKey[:], digest1[:])
|
||||
expandedSecretKey[0] &= 248
|
||||
expandedSecretKey[31] &= 63
|
||||
expandedSecretKey[31] |= 64
|
||||
|
||||
h.Reset()
|
||||
h.Write(digest1[32:])
|
||||
h.Write(message)
|
||||
h.Sum(messageDigest[:0])
|
||||
|
||||
var messageDigestReduced [32]byte
|
||||
edwards25519.ScReduce(&messageDigestReduced, &messageDigest)
|
||||
var R edwards25519.ExtendedGroupElement
|
||||
edwards25519.GeScalarMultBase(&R, &messageDigestReduced)
|
||||
|
||||
var encodedR [32]byte
|
||||
R.ToBytes(&encodedR)
|
||||
|
||||
h.Reset()
|
||||
h.Write(encodedR[:])
|
||||
h.Write(privateKey[32:])
|
||||
h.Write(message)
|
||||
h.Sum(hramDigest[:0])
|
||||
var hramDigestReduced [32]byte
|
||||
edwards25519.ScReduce(&hramDigestReduced, &hramDigest)
|
||||
|
||||
var s [32]byte
|
||||
edwards25519.ScMulAdd(&s, &hramDigestReduced, &expandedSecretKey, &messageDigestReduced)
|
||||
|
||||
signature := make([]byte, SignatureSize)
|
||||
copy(signature[:], encodedR[:])
|
||||
copy(signature[32:], s[:])
|
||||
|
||||
return signature
|
||||
}
|
||||
|
||||
// Verify reports whether sig is a valid signature of message by publicKey. It
|
||||
// will panic if len(publicKey) is not PublicKeySize.
|
||||
func Verify(publicKey PublicKey, message, sig []byte) bool {
|
||||
if l := len(publicKey); l != PublicKeySize {
|
||||
panic("ed25519: bad public key length: " + strconv.Itoa(l))
|
||||
}
|
||||
|
||||
if len(sig) != SignatureSize || sig[63]&224 != 0 {
|
||||
return false
|
||||
}
|
||||
|
||||
var A edwards25519.ExtendedGroupElement
|
||||
var publicKeyBytes [32]byte
|
||||
copy(publicKeyBytes[:], publicKey)
|
||||
if !A.FromBytes(&publicKeyBytes) {
|
||||
return false
|
||||
}
|
||||
edwards25519.FeNeg(&A.X, &A.X)
|
||||
edwards25519.FeNeg(&A.T, &A.T)
|
||||
|
||||
h := sha512.New()
|
||||
h.Write(sig[:32])
|
||||
h.Write(publicKey[:])
|
||||
h.Write(message)
|
||||
var digest [64]byte
|
||||
h.Sum(digest[:0])
|
||||
|
||||
var hReduced [32]byte
|
||||
edwards25519.ScReduce(&hReduced, &digest)
|
||||
|
||||
var R edwards25519.ProjectiveGroupElement
|
||||
var b [32]byte
|
||||
copy(b[:], sig[32:])
|
||||
edwards25519.GeDoubleScalarMultVartime(&R, &hReduced, &A, &b)
|
||||
|
||||
var checkR [32]byte
|
||||
R.ToBytes(&checkR)
|
||||
return subtle.ConstantTimeCompare(sig[:32], checkR[:]) == 1
|
||||
}
|
||||
183
vendor/src/golang.org/x/crypto/ed25519/ed25519_test.go
vendored
Normal file
183
vendor/src/golang.org/x/crypto/ed25519/ed25519_test.go
vendored
Normal file
|
|
@ -0,0 +1,183 @@
|
|||
// Copyright 2016 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package ed25519
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"bytes"
|
||||
"compress/gzip"
|
||||
"crypto"
|
||||
"crypto/rand"
|
||||
"encoding/hex"
|
||||
"os"
|
||||
"strings"
|
||||
"testing"
|
||||
|
||||
"golang.org/x/crypto/ed25519/internal/edwards25519"
|
||||
)
|
||||
|
||||
type zeroReader struct{}
|
||||
|
||||
func (zeroReader) Read(buf []byte) (int, error) {
|
||||
for i := range buf {
|
||||
buf[i] = 0
|
||||
}
|
||||
return len(buf), nil
|
||||
}
|
||||
|
||||
func TestUnmarshalMarshal(t *testing.T) {
|
||||
pub, _, _ := GenerateKey(rand.Reader)
|
||||
|
||||
var A edwards25519.ExtendedGroupElement
|
||||
var pubBytes [32]byte
|
||||
copy(pubBytes[:], pub)
|
||||
if !A.FromBytes(&pubBytes) {
|
||||
t.Fatalf("ExtendedGroupElement.FromBytes failed")
|
||||
}
|
||||
|
||||
var pub2 [32]byte
|
||||
A.ToBytes(&pub2)
|
||||
|
||||
if pubBytes != pub2 {
|
||||
t.Errorf("FromBytes(%v)->ToBytes does not round-trip, got %x\n", pubBytes, pub2)
|
||||
}
|
||||
}
|
||||
|
||||
func TestSignVerify(t *testing.T) {
|
||||
var zero zeroReader
|
||||
public, private, _ := GenerateKey(zero)
|
||||
|
||||
message := []byte("test message")
|
||||
sig := Sign(private, message)
|
||||
if !Verify(public, message, sig) {
|
||||
t.Errorf("valid signature rejected")
|
||||
}
|
||||
|
||||
wrongMessage := []byte("wrong message")
|
||||
if Verify(public, wrongMessage, sig) {
|
||||
t.Errorf("signature of different message accepted")
|
||||
}
|
||||
}
|
||||
|
||||
func TestCryptoSigner(t *testing.T) {
|
||||
var zero zeroReader
|
||||
public, private, _ := GenerateKey(zero)
|
||||
|
||||
signer := crypto.Signer(private)
|
||||
|
||||
publicInterface := signer.Public()
|
||||
public2, ok := publicInterface.(PublicKey)
|
||||
if !ok {
|
||||
t.Fatalf("expected PublicKey from Public() but got %T", publicInterface)
|
||||
}
|
||||
|
||||
if !bytes.Equal(public, public2) {
|
||||
t.Errorf("public keys do not match: original:%x vs Public():%x", public, public2)
|
||||
}
|
||||
|
||||
message := []byte("message")
|
||||
var noHash crypto.Hash
|
||||
signature, err := signer.Sign(zero, message, noHash)
|
||||
if err != nil {
|
||||
t.Fatalf("error from Sign(): %s", err)
|
||||
}
|
||||
|
||||
if !Verify(public, message, signature) {
|
||||
t.Errorf("Verify failed on signature from Sign()")
|
||||
}
|
||||
}
|
||||
|
||||
func TestGolden(t *testing.T) {
|
||||
// sign.input.gz is a selection of test cases from
|
||||
// http://ed25519.cr.yp.to/python/sign.input
|
||||
testDataZ, err := os.Open("testdata/sign.input.gz")
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
defer testDataZ.Close()
|
||||
testData, err := gzip.NewReader(testDataZ)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
defer testData.Close()
|
||||
|
||||
scanner := bufio.NewScanner(testData)
|
||||
lineNo := 0
|
||||
|
||||
for scanner.Scan() {
|
||||
lineNo++
|
||||
|
||||
line := scanner.Text()
|
||||
parts := strings.Split(line, ":")
|
||||
if len(parts) != 5 {
|
||||
t.Fatalf("bad number of parts on line %d", lineNo)
|
||||
}
|
||||
|
||||
privBytes, _ := hex.DecodeString(parts[0])
|
||||
pubKey, _ := hex.DecodeString(parts[1])
|
||||
msg, _ := hex.DecodeString(parts[2])
|
||||
sig, _ := hex.DecodeString(parts[3])
|
||||
// The signatures in the test vectors also include the message
|
||||
// at the end, but we just want R and S.
|
||||
sig = sig[:SignatureSize]
|
||||
|
||||
if l := len(pubKey); l != PublicKeySize {
|
||||
t.Fatalf("bad public key length on line %d: got %d bytes", lineNo, l)
|
||||
}
|
||||
|
||||
var priv [PrivateKeySize]byte
|
||||
copy(priv[:], privBytes)
|
||||
copy(priv[32:], pubKey)
|
||||
|
||||
sig2 := Sign(priv[:], msg)
|
||||
if !bytes.Equal(sig, sig2[:]) {
|
||||
t.Errorf("different signature result on line %d: %x vs %x", lineNo, sig, sig2)
|
||||
}
|
||||
|
||||
if !Verify(pubKey, msg, sig2) {
|
||||
t.Errorf("signature failed to verify on line %d", lineNo)
|
||||
}
|
||||
}
|
||||
|
||||
if err := scanner.Err(); err != nil {
|
||||
t.Fatalf("error reading test data: %s", err)
|
||||
}
|
||||
}
|
||||
|
||||
func BenchmarkKeyGeneration(b *testing.B) {
|
||||
var zero zeroReader
|
||||
for i := 0; i < b.N; i++ {
|
||||
if _, _, err := GenerateKey(zero); err != nil {
|
||||
b.Fatal(err)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func BenchmarkSigning(b *testing.B) {
|
||||
var zero zeroReader
|
||||
_, priv, err := GenerateKey(zero)
|
||||
if err != nil {
|
||||
b.Fatal(err)
|
||||
}
|
||||
message := []byte("Hello, world!")
|
||||
b.ResetTimer()
|
||||
for i := 0; i < b.N; i++ {
|
||||
Sign(priv, message)
|
||||
}
|
||||
}
|
||||
|
||||
func BenchmarkVerification(b *testing.B) {
|
||||
var zero zeroReader
|
||||
pub, priv, err := GenerateKey(zero)
|
||||
if err != nil {
|
||||
b.Fatal(err)
|
||||
}
|
||||
message := []byte("Hello, world!")
|
||||
signature := Sign(priv, message)
|
||||
b.ResetTimer()
|
||||
for i := 0; i < b.N; i++ {
|
||||
Verify(pub, message, signature)
|
||||
}
|
||||
}
|
||||
1422
vendor/src/golang.org/x/crypto/ed25519/internal/edwards25519/const.go
vendored
Normal file
1422
vendor/src/golang.org/x/crypto/ed25519/internal/edwards25519/const.go
vendored
Normal file
File diff suppressed because it is too large
Load diff
1771
vendor/src/golang.org/x/crypto/ed25519/internal/edwards25519/edwards25519.go
vendored
Normal file
1771
vendor/src/golang.org/x/crypto/ed25519/internal/edwards25519/edwards25519.go
vendored
Normal file
File diff suppressed because it is too large
Load diff
BIN
vendor/src/golang.org/x/crypto/ed25519/testdata/sign.input.gz
vendored
Normal file
BIN
vendor/src/golang.org/x/crypto/ed25519/testdata/sign.input.gz
vendored
Normal file
Binary file not shown.
Loading…
Reference in a new issue