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Update gomatrixserverlib dep and add basic /createRoom validation (#31)

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This commit is contained in:
Kegsay 2017-03-09 11:47:06 +00:00 committed by GitHub
parent 1d18da1189
commit e82090e277
7 changed files with 250 additions and 102 deletions
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8
src/github.com/matrix-org/dendrite/clientapi/common/common.go
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@ -2,9 +2,10 @@ package common
import (
"encoding/json"
"net/http"
"github.com/matrix-org/dendrite/clientapi/jsonerror"
"github.com/matrix-org/util"
"net/http"
)
// UnmarshalJSONRequest into the given interface pointer. Returns an error JSON response if
@ -12,9 +13,12 @@ import (
func UnmarshalJSONRequest(req *http.Request, iface interface{}) *util.JSONResponse {
defer req.Body.Close()
if err := json.NewDecoder(req.Body).Decode(iface); err != nil {
// TODO: We may want to suppress the Error() return in production? It's useful when
// debugging because an error will be produced for both invalid/malformed JSON AND
// valid JSON with incorrect types for values.
return &util.JSONResponse{
Code: 400,
JSON: jsonerror.NotJSON("The request body was not JSON"),
JSON: jsonerror.BadJSON("The request body could not be decoded into valid JSON. " + err.Error()),
}
}
return nil

86
src/github.com/matrix-org/dendrite/clientapi/writers/createroom.go
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@ -2,11 +2,14 @@ package writers
import (
"encoding/json"
"fmt"
"net/http"
"strings"
log "github.com/Sirupsen/logrus"
"github.com/matrix-org/dendrite/clientapi/auth"
"github.com/matrix-org/dendrite/clientapi/common"
"github.com/matrix-org/dendrite/clientapi/jsonerror"
"github.com/matrix-org/util"
)
@ -22,8 +25,56 @@ type createRoomRequest struct {
RoomAliasName string `json:"room_alias_name"`
}
func (r createRoomRequest) Validate() *util.JSONResponse {
whitespace := "\t\n\x0b\x0c\r " // https://docs.python.org/2/library/string.html#string.whitespace
// https://github.com/matrix-org/synapse/blob/v0.19.2/synapse/handlers/room.py#L81
// Synapse doesn't check for ':' but we will else it will break parsers badly which split things into 2 segments.
if strings.ContainsAny(r.RoomAliasName, whitespace+":") {
return &util.JSONResponse{
Code: 400,
JSON: jsonerror.BadJSON("room_alias_name cannot contain whitespace"),
}
}
for _, userID := range r.Invite {
// TODO: We should put user ID parsing code into gomatrixserverlib and use that instead
// (see https://github.com/matrix-org/gomatrixserverlib/blob/3394e7c7003312043208aa73727d2256eea3d1f6/eventcontent.go#L347 )
// It should be a struct (with pointers into a single string to avoid copying) and
// we should update all refs to use UserID types rather than strings.
// https://github.com/matrix-org/synapse/blob/v0.19.2/synapse/types.py#L92
if len(userID) == 0 || userID[0] != '@' {
return &util.JSONResponse{
Code: 400,
JSON: jsonerror.BadJSON("user id must start with '@'"),
}
}
parts := strings.SplitN(userID[1:], ":", 2)
if len(parts) != 2 {
return &util.JSONResponse{
Code: 400,
JSON: jsonerror.BadJSON("user id must be in the form @localpart:domain"),
}
}
}
return nil
}
// https://matrix.org/docs/spec/client_server/r0.2.0.html#post-matrix-client-r0-createroom
type createRoomResponse struct {
RoomID string `json:"room_id"`
RoomAlias string `json:"room_alias,omitempty"` // in synapse not spec
}
// CreateRoom implements /createRoom
func CreateRoom(req *http.Request) util.JSONResponse {
serverName := "localhost"
// TODO: Check room ID doesn't clash with an existing one, and we
// probably shouldn't be using pseudo-random strings, maybe GUIDs?
roomID := fmt.Sprintf("!%s:%s", util.RandomString(16), serverName)
return createRoom(req, roomID)
}
// createRoom implements /createRoom
func createRoom(req *http.Request, roomID string) util.JSONResponse {
logger := util.GetLogger(req.Context())
userID, resErr := auth.VerifyAccessToken(req)
if resErr != nil {
@ -34,9 +85,44 @@ func CreateRoom(req *http.Request) util.JSONResponse {
if resErr != nil {
return *resErr
}
// TODO: apply rate-limit
if resErr = r.Validate(); resErr != nil {
return *resErr
}
// TODO: visibility/presets/raw initial state/creation content
// TODO: Create room alias association
logger.WithFields(log.Fields{
"userID": userID,
"roomID": roomID,
}).Info("Creating room")
// send events into the room in order of:
// 1- m.room.create
// 2- room creator join member
// 3- m.room.power_levels
// 4- m.room.canonical_alias (opt) TODO
// 5- m.room.join_rules
// 6- m.room.history_visibility
// 7- m.room.guest_access (opt) TODO
// 8- other initial state items TODO
// 9- m.room.name (opt)
// 10- m.room.topic (opt)
// 11- invite events (opt) - with is_direct flag if applicable TODO
// 12- 3pid invite events (opt) TODO
// 13- m.room.aliases event for HS (if alias specified) TODO
// This differs from Synapse slightly. Synapse would vary the ordering of 3-7
// depending on if those events were in "initial_state" or not. This made it
// harder to reason about, hence sticking to a strict static ordering.
// f.e event:
// - validate required keys/types (EventValidator in synapse)
// - set additional keys (displayname/avatar_url for m.room.member)
// - set token(?) and txn id
// - then https://github.com/matrix-org/synapse/blob/v0.19.2/synapse/handlers/message.py#L419
return util.MessageResponse(404, "Not implemented yet")
}

2
vendor/manifest vendored
View File

@ -92,7 +92,7 @@
{
"importpath": "github.com/matrix-org/gomatrixserverlib",
"repository": "https://github.com/matrix-org/gomatrixserverlib",
"revision": "48ee56a33d195dc412dd919a0e81af70c9aaf4a3",
"revision": "ce2ae9c5812346444b0ca75d57834794cde03fb7",
"branch": "master"
},
{

15
vendor/src/github.com/matrix-org/gomatrixserverlib/event.go vendored
View File

@ -326,6 +326,21 @@ func (e Event) Depth() int64 {
return e.fields.Depth
}
// UnmarshalJSON implements json.Unmarshaller assuming the Event is from an untrusted source.
// This will cause more checks than might be necessary but is probably better to be safe than sorry.
func (e *Event) UnmarshalJSON(data []byte) (err error) {
*e, err = NewEventFromUntrustedJSON(data)
return
}
// MarshalJSON implements json.Marshaller
func (e Event) MarshalJSON() ([]byte, error) {
if e.eventJSON == nil {
return nil, fmt.Errorf("gomatrixserverlib: cannot serialise uninitialised Event")
}
return e.eventJSON, nil
}
// UnmarshalJSON implements json.Unmarshaller
func (er *EventReference) UnmarshalJSON(data []byte) error {
var tuple []rawJSON

184
vendor/src/github.com/matrix-org/gomatrixserverlib/eventauth.go vendored
View File

@ -18,7 +18,8 @@ package gomatrixserverlib
import (
"encoding/json"
"fmt"
"sort"
"github.com/matrix-org/util"
)
const (
@ -43,105 +44,108 @@ type StateNeeded struct {
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())
// StateNeededForEventBuilder returns the event types and state_keys needed to authenticate the
// event being built. These events should be put under 'auth_events' for the event being built.
// Returns an error if the state needed could not be calculated with the given builder, e.g
// if there is a m.room.member without a membership key.
func StateNeededForEventBuilder(builder *EventBuilder) (result StateNeeded, err error) {
// Extract the 'content' object from the event if it is m.room.member as we need to know 'membership'
var content *memberContent
if builder.Type == "m.room.member" {
if err = json.Unmarshal(builder.content, &content); err != nil {
err = errorf("unparsable member event content: %s", err.Error())
return
}
}
// Deduplicate the state keys.
sort.Strings(members)
result.Member = members[:unique(sort.StringSlice(members))]
sort.Strings(thirdpartyinvites)
result.ThirdPartyInvite = thirdpartyinvites[:unique(sort.StringSlice(thirdpartyinvites))]
err = accumulateStateNeeded(&result, builder.Type, builder.Sender, builder.StateKey, content)
result.Member = util.UniqueStrings(result.Member)
result.ThirdPartyInvite = util.UniqueStrings(result.ThirdPartyInvite)
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++
// 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) {
for _, event := range events {
// Extract the 'content' object from the event if it is m.room.member as we need to know 'membership'
var content *memberContent
if event.Type() == "m.room.member" {
c, err := newMemberContentFromEvent(event)
if err == nil {
content = &c
}
}
// Ignore errors when accumulating state needed.
// The event will be rejected when the actual checks encounter the same error.
_ = accumulateStateNeeded(&result, event.Type(), event.Sender(), event.StateKey(), content)
}
data.Swap(length-1, j)
return j + 1
// Deduplicate the state keys.
result.Member = util.UniqueStrings(result.Member)
result.ThirdPartyInvite = util.UniqueStrings(result.ThirdPartyInvite)
return
}
func accumulateStateNeeded(result *StateNeeded, eventType, sender string, stateKey *string, content *memberContent) (err error) {
switch eventType {
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
if content == nil {
err = errorf("missing memberContent for m.room.member event")
return
}
result.Create = true
result.PowerLevels = true
if stateKey != nil {
result.Member = append(result.Member, sender, *stateKey)
}
if content.Membership == join {
result.JoinRules = true
}
if content.ThirdPartyInvite != nil {
token, tokErr := thirdPartyInviteToken(content.ThirdPartyInvite)
if tokErr != nil {
err = errorf("could not get third-party token: %s", tokErr)
return
}
result.ThirdPartyInvite = append(result.ThirdPartyInvite, 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
result.Member = append(result.Member, sender)
}
return
}
// thirdPartyInviteToken extracts the token from the third_party_invite.
func thirdPartyInviteToken(thirdPartyInviteData json.RawMessage) (string, error) {
func thirdPartyInviteToken(thirdPartyInviteData rawJSON) (string, error) {
var thirdPartyInvite struct {
Signed struct {
Token string `json:"token"`

53
vendor/src/github.com/matrix-org/gomatrixserverlib/eventauth_test.go vendored
View File

@ -68,7 +68,7 @@ func (tel *testEventList) UnmarshalJSON(data []byte) error {
return nil
}
func testStateNeededForAuth(t *testing.T, eventdata string, want StateNeeded) {
func testStateNeededForAuth(t *testing.T, eventdata string, builder *EventBuilder, want StateNeeded) {
var events testEventList
if err := json.Unmarshal([]byte(eventdata), &events); err != nil {
panic(err)
@ -77,11 +77,24 @@ func testStateNeededForAuth(t *testing.T, eventdata string, want StateNeeded) {
if !stateNeededEquals(got, want) {
t.Errorf("Testing StateNeededForAuth(%#v), wanted %#v got %#v", events, want, got)
}
if builder != nil {
got, err := StateNeededForEventBuilder(builder)
if !stateNeededEquals(got, want) {
t.Errorf("Testing StateNeededForEventBuilder(%#v), wanted %#v got %#v", events, want, got)
}
if err != nil {
panic(err)
}
}
}
func TestStateNeededForCreate(t *testing.T) {
// Create events don't need anything.
testStateNeededForAuth(t, `[{"type": "m.room.create"}]`, StateNeeded{})
skey := ""
testStateNeededForAuth(t, `[{"type": "m.room.create"}]`, &EventBuilder{
Type: "m.room.create",
StateKey: &skey,
}, StateNeeded{})
}
func TestStateNeededForMessage(t *testing.T) {
@ -89,7 +102,10 @@ func TestStateNeededForMessage(t *testing.T) {
testStateNeededForAuth(t, `[{
"type": "m.room.message",
"sender": "@u1:a"
}]`, StateNeeded{
}]`, &EventBuilder{
Type: "m.room.message",
Sender: "@u1:a",
}, StateNeeded{
Create: true,
PowerLevels: true,
Member: []string{"@u1:a"},
@ -98,18 +114,27 @@ func TestStateNeededForMessage(t *testing.T) {
func TestStateNeededForAlias(t *testing.T) {
// Alias events need only the create event.
testStateNeededForAuth(t, `[{"type": "m.room.aliases"}]`, StateNeeded{
testStateNeededForAuth(t, `[{"type": "m.room.aliases"}]`, &EventBuilder{
Type: "m.room.aliases",
}, StateNeeded{
Create: true,
})
}
func TestStateNeededForJoin(t *testing.T) {
skey := "@u1:a"
b := EventBuilder{
Type: "m.room.member",
StateKey: &skey,
Sender: "@u1:a",
}
b.SetContent(memberContent{"join", nil})
testStateNeededForAuth(t, `[{
"type": "m.room.member",
"state_key": "@u1:a",
"sender": "@u1:a",
"content": {"membership": "join"}
}]`, StateNeeded{
}]`, &b, StateNeeded{
Create: true,
JoinRules: true,
PowerLevels: true,
@ -118,12 +143,19 @@ func TestStateNeededForJoin(t *testing.T) {
}
func TestStateNeededForInvite(t *testing.T) {
skey := "@u2:b"
b := EventBuilder{
Type: "m.room.member",
StateKey: &skey,
Sender: "@u1:a",
}
b.SetContent(memberContent{"invite", nil})
testStateNeededForAuth(t, `[{
"type": "m.room.member",
"state_key": "@u2:b",
"sender": "@u1:a",
"content": {"membership": "invite"}
}]`, StateNeeded{
}]`, &b, StateNeeded{
Create: true,
PowerLevels: true,
Member: []string{"@u1:a", "@u2:b"},
@ -131,6 +163,13 @@ func TestStateNeededForInvite(t *testing.T) {
}
func TestStateNeededForInvite3PID(t *testing.T) {
skey := "@u2:b"
b := EventBuilder{
Type: "m.room.member",
StateKey: &skey,
Sender: "@u1:a",
}
b.SetContent(memberContent{"invite", rawJSON(`{"signed":{"token":"my_token"}}`)})
testStateNeededForAuth(t, `[{
"type": "m.room.member",
"state_key": "@u2:b",
@ -143,7 +182,7 @@ func TestStateNeededForInvite3PID(t *testing.T) {
}
}
}
}]`, StateNeeded{
}]`, &b, StateNeeded{
Create: true,
PowerLevels: true,
Member: []string{"@u1:a", "@u2:b"},

2
vendor/src/github.com/matrix-org/gomatrixserverlib/eventcontent.go vendored
View File

@ -108,7 +108,7 @@ 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"`
ThirdPartyInvite rawJSON `json:"third_party_invite,omitempty"`
}
// newMemberContentFromAuthEvents loads the member content from the member event for the user ID in the auth events.