662 lines
20 KiB
Go
662 lines
20 KiB
Go
// Copyright 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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package routing
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import (
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"context"
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"crypto/ed25519"
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"fmt"
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"net/http"
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"time"
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"github.com/getsentry/sentry-go"
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"github.com/matrix-org/gomatrixserverlib"
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"github.com/matrix-org/gomatrixserverlib/fclient"
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"github.com/matrix-org/gomatrixserverlib/spec"
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appserviceAPI "github.com/matrix-org/dendrite/appservice/api"
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"github.com/matrix-org/dendrite/clientapi/auth/authtypes"
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"github.com/matrix-org/dendrite/clientapi/httputil"
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"github.com/matrix-org/dendrite/clientapi/threepid"
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"github.com/matrix-org/dendrite/internal/eventutil"
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"github.com/matrix-org/dendrite/roomserver/api"
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roomserverAPI "github.com/matrix-org/dendrite/roomserver/api"
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"github.com/matrix-org/dendrite/roomserver/types"
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"github.com/matrix-org/dendrite/setup/config"
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userapi "github.com/matrix-org/dendrite/userapi/api"
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"github.com/matrix-org/util"
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)
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func SendBan(
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req *http.Request, profileAPI userapi.ClientUserAPI, device *userapi.Device,
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roomID string, cfg *config.ClientAPI,
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rsAPI roomserverAPI.ClientRoomserverAPI, asAPI appserviceAPI.AppServiceInternalAPI,
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) util.JSONResponse {
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body, evTime, reqErr := extractRequestData(req)
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if reqErr != nil {
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return *reqErr
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}
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if body.UserID == "" {
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: spec.BadJSON("missing user_id"),
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}
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}
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deviceUserID, err := spec.NewUserID(device.UserID, true)
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if err != nil {
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return util.JSONResponse{
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Code: http.StatusForbidden,
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JSON: spec.Forbidden("You don't have permission to ban this user, bad userID"),
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}
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}
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validRoomID, err := spec.NewRoomID(roomID)
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if err != nil {
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: spec.BadJSON("RoomID is invalid"),
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}
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}
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senderID, err := rsAPI.QuerySenderIDForUser(req.Context(), *validRoomID, *deviceUserID)
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if err != nil {
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return util.JSONResponse{
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Code: http.StatusForbidden,
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JSON: spec.Forbidden("You don't have permission to ban this user, unknown senderID"),
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}
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}
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errRes := checkMemberInRoom(req.Context(), rsAPI, *deviceUserID, roomID)
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if errRes != nil {
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return *errRes
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}
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pl, errRes := getPowerlevels(req, rsAPI, roomID)
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if errRes != nil {
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return *errRes
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}
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allowedToBan := pl.UserLevel(senderID) >= pl.Ban
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if !allowedToBan {
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return util.JSONResponse{
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Code: http.StatusForbidden,
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JSON: spec.Forbidden("You don't have permission to ban this user, power level too low."),
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}
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}
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return sendMembership(req.Context(), profileAPI, device, roomID, spec.Ban, body.Reason, cfg, body.UserID, evTime, rsAPI, asAPI)
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}
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func sendMembership(ctx context.Context, profileAPI userapi.ClientUserAPI, device *userapi.Device,
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roomID, membership, reason string, cfg *config.ClientAPI, targetUserID string, evTime time.Time,
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rsAPI roomserverAPI.ClientRoomserverAPI, asAPI appserviceAPI.AppServiceInternalAPI) util.JSONResponse {
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event, err := buildMembershipEvent(
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ctx, targetUserID, reason, profileAPI, device, membership,
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roomID, false, cfg, evTime, rsAPI, asAPI,
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)
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if err != nil {
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util.GetLogger(ctx).WithError(err).Error("buildMembershipEvent failed")
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return util.JSONResponse{
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Code: http.StatusInternalServerError,
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JSON: spec.InternalServerError{},
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}
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}
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serverName := device.UserDomain()
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if err = roomserverAPI.SendEvents(
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ctx, rsAPI,
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roomserverAPI.KindNew,
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[]*types.HeaderedEvent{event},
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device.UserDomain(),
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serverName,
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serverName,
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nil,
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false,
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); err != nil {
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util.GetLogger(ctx).WithError(err).Error("SendEvents failed")
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return util.JSONResponse{
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Code: http.StatusInternalServerError,
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JSON: spec.InternalServerError{},
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}
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}
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return util.JSONResponse{
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Code: http.StatusOK,
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JSON: struct{}{},
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}
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}
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func SendKick(
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req *http.Request, profileAPI userapi.ClientUserAPI, device *userapi.Device,
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roomID string, cfg *config.ClientAPI,
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rsAPI roomserverAPI.ClientRoomserverAPI, asAPI appserviceAPI.AppServiceInternalAPI,
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) util.JSONResponse {
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body, evTime, reqErr := extractRequestData(req)
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if reqErr != nil {
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return *reqErr
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}
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if body.UserID == "" {
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: spec.BadJSON("missing user_id"),
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}
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}
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deviceUserID, err := spec.NewUserID(device.UserID, true)
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if err != nil {
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return util.JSONResponse{
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Code: http.StatusForbidden,
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JSON: spec.Forbidden("You don't have permission to kick this user, bad userID"),
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}
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}
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validRoomID, err := spec.NewRoomID(roomID)
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if err != nil {
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: spec.BadJSON("RoomID is invalid"),
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}
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}
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senderID, err := rsAPI.QuerySenderIDForUser(req.Context(), *validRoomID, *deviceUserID)
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if err != nil {
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return util.JSONResponse{
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Code: http.StatusForbidden,
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JSON: spec.Forbidden("You don't have permission to kick this user, unknown senderID"),
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}
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}
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errRes := checkMemberInRoom(req.Context(), rsAPI, *deviceUserID, roomID)
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if errRes != nil {
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return *errRes
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}
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pl, errRes := getPowerlevels(req, rsAPI, roomID)
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if errRes != nil {
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return *errRes
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}
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allowedToKick := pl.UserLevel(senderID) >= pl.Kick
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if !allowedToKick {
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return util.JSONResponse{
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Code: http.StatusForbidden,
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JSON: spec.Forbidden("You don't have permission to kick this user, power level too low."),
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}
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}
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bodyUserID, err := spec.NewUserID(body.UserID, true)
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if err != nil {
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: spec.BadJSON("body userID is invalid"),
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}
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}
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var queryRes roomserverAPI.QueryMembershipForUserResponse
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err = rsAPI.QueryMembershipForUser(req.Context(), &roomserverAPI.QueryMembershipForUserRequest{
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RoomID: roomID,
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UserID: *bodyUserID,
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}, &queryRes)
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if err != nil {
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return util.ErrorResponse(err)
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}
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// kick is only valid if the user is not currently banned or left (that is, they are joined or invited)
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if queryRes.Membership != spec.Join && queryRes.Membership != spec.Invite {
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return util.JSONResponse{
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Code: http.StatusForbidden,
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JSON: spec.Unknown("cannot /kick banned or left users"),
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}
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}
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// TODO: should we be using SendLeave instead?
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return sendMembership(req.Context(), profileAPI, device, roomID, spec.Leave, body.Reason, cfg, body.UserID, evTime, rsAPI, asAPI)
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}
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func SendUnban(
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req *http.Request, profileAPI userapi.ClientUserAPI, device *userapi.Device,
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roomID string, cfg *config.ClientAPI,
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rsAPI roomserverAPI.ClientRoomserverAPI, asAPI appserviceAPI.AppServiceInternalAPI,
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) util.JSONResponse {
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body, evTime, reqErr := extractRequestData(req)
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if reqErr != nil {
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return *reqErr
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}
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if body.UserID == "" {
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: spec.BadJSON("missing user_id"),
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}
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}
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deviceUserID, err := spec.NewUserID(device.UserID, true)
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if err != nil {
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return util.JSONResponse{
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Code: http.StatusForbidden,
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JSON: spec.Forbidden("You don't have permission to kick this user, bad userID"),
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}
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}
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errRes := checkMemberInRoom(req.Context(), rsAPI, *deviceUserID, roomID)
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if errRes != nil {
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return *errRes
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}
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bodyUserID, err := spec.NewUserID(body.UserID, true)
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if err != nil {
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: spec.BadJSON("body userID is invalid"),
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}
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}
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var queryRes roomserverAPI.QueryMembershipForUserResponse
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err = rsAPI.QueryMembershipForUser(req.Context(), &roomserverAPI.QueryMembershipForUserRequest{
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RoomID: roomID,
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UserID: *bodyUserID,
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}, &queryRes)
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if err != nil {
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return util.ErrorResponse(err)
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}
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// unban is only valid if the user is currently banned
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if queryRes.Membership != spec.Ban {
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: spec.Unknown("can only /unban users that are banned"),
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}
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}
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// TODO: should we be using SendLeave instead?
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return sendMembership(req.Context(), profileAPI, device, roomID, spec.Leave, body.Reason, cfg, body.UserID, evTime, rsAPI, asAPI)
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}
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func SendInvite(
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req *http.Request, profileAPI userapi.ClientUserAPI, device *userapi.Device,
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roomID string, cfg *config.ClientAPI,
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rsAPI roomserverAPI.ClientRoomserverAPI, asAPI appserviceAPI.AppServiceInternalAPI,
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) util.JSONResponse {
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body, evTime, reqErr := extractRequestData(req)
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if reqErr != nil {
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return *reqErr
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}
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inviteStored, jsonErrResp := checkAndProcessThreepid(
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req, device, body, cfg, rsAPI, profileAPI, roomID, evTime,
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)
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if jsonErrResp != nil {
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return *jsonErrResp
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}
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// If an invite has been stored on an identity server, it means that a
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// m.room.third_party_invite event has been emitted and that we shouldn't
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// emit a m.room.member one.
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if inviteStored {
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return util.JSONResponse{
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Code: http.StatusOK,
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JSON: struct{}{},
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}
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}
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if body.UserID == "" {
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: spec.BadJSON("missing user_id"),
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}
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}
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deviceUserID, err := spec.NewUserID(device.UserID, true)
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if err != nil {
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return util.JSONResponse{
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Code: http.StatusForbidden,
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JSON: spec.Forbidden("You don't have permission to kick this user, bad userID"),
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}
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}
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errRes := checkMemberInRoom(req.Context(), rsAPI, *deviceUserID, roomID)
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if errRes != nil {
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return *errRes
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}
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// We already received the return value, so no need to check for an error here.
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response, _ := sendInvite(req.Context(), profileAPI, device, roomID, body.UserID, body.Reason, cfg, rsAPI, asAPI, evTime)
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return response
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}
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// sendInvite sends an invitation to a user. Returns a JSONResponse and an error
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func sendInvite(
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ctx context.Context,
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profileAPI userapi.ClientUserAPI,
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device *userapi.Device,
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roomID, userID, reason string,
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cfg *config.ClientAPI,
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rsAPI roomserverAPI.ClientRoomserverAPI,
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asAPI appserviceAPI.AppServiceInternalAPI, evTime time.Time,
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) (util.JSONResponse, error) {
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event, err := buildMembershipEvent(
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ctx, userID, reason, profileAPI, device, spec.Invite,
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roomID, false, cfg, evTime, rsAPI, asAPI,
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)
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if err != nil {
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util.GetLogger(ctx).WithError(err).Error("buildMembershipEvent failed")
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return util.JSONResponse{
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Code: http.StatusInternalServerError,
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JSON: spec.InternalServerError{},
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}, err
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}
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err = rsAPI.PerformInvite(ctx, &api.PerformInviteRequest{
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Event: event,
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InviteRoomState: nil, // ask the roomserver to draw up invite room state for us
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RoomVersion: event.Version(),
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SendAsServer: string(device.UserDomain()),
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})
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switch e := err.(type) {
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case roomserverAPI.ErrInvalidID:
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: spec.Unknown(e.Error()),
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}, e
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case roomserverAPI.ErrNotAllowed:
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return util.JSONResponse{
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Code: http.StatusForbidden,
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JSON: spec.Forbidden(e.Error()),
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}, e
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case nil:
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default:
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util.GetLogger(ctx).WithError(err).Error("PerformInvite failed")
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sentry.CaptureException(err)
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return util.JSONResponse{
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Code: http.StatusInternalServerError,
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JSON: spec.InternalServerError{},
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}, err
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}
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return util.JSONResponse{
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Code: http.StatusOK,
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JSON: struct{}{},
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}, nil
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}
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func buildMembershipEventDirect(
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ctx context.Context,
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targetSenderID spec.SenderID, reason string, userDisplayName, userAvatarURL string,
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sender spec.SenderID, senderDomain spec.ServerName,
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membership, roomID string, isDirect bool,
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keyID gomatrixserverlib.KeyID, privateKey ed25519.PrivateKey, evTime time.Time,
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rsAPI roomserverAPI.ClientRoomserverAPI,
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) (*types.HeaderedEvent, error) {
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targetSenderString := string(targetSenderID)
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proto := gomatrixserverlib.ProtoEvent{
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SenderID: string(sender),
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RoomID: roomID,
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Type: "m.room.member",
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StateKey: &targetSenderString,
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}
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content := gomatrixserverlib.MemberContent{
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Membership: membership,
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DisplayName: userDisplayName,
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AvatarURL: userAvatarURL,
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Reason: reason,
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IsDirect: isDirect,
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}
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if err := proto.SetContent(content); err != nil {
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return nil, err
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}
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identity := &fclient.SigningIdentity{
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ServerName: senderDomain,
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KeyID: keyID,
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PrivateKey: privateKey,
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}
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return eventutil.QueryAndBuildEvent(ctx, &proto, identity, evTime, rsAPI, nil)
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}
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func buildMembershipEvent(
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ctx context.Context,
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targetUserID, reason string, profileAPI userapi.ClientUserAPI,
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device *userapi.Device,
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membership, roomID string, isDirect bool,
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cfg *config.ClientAPI, evTime time.Time,
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rsAPI roomserverAPI.ClientRoomserverAPI, asAPI appserviceAPI.AppServiceInternalAPI,
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) (*types.HeaderedEvent, error) {
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profile, err := loadProfile(ctx, targetUserID, cfg, profileAPI, asAPI)
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if err != nil {
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return nil, err
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}
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identity, err := cfg.Matrix.SigningIdentityFor(device.UserDomain())
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if err != nil {
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return nil, err
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}
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userID, err := spec.NewUserID(device.UserID, true)
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if err != nil {
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return nil, err
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}
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validRoomID, err := spec.NewRoomID(roomID)
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if err != nil {
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return nil, err
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}
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senderID, err := rsAPI.QuerySenderIDForUser(ctx, *validRoomID, *userID)
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if err != nil {
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return nil, err
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}
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targetID, err := spec.NewUserID(targetUserID, true)
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if err != nil {
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return nil, err
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}
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targetSenderID, err := rsAPI.QuerySenderIDForUser(ctx, *validRoomID, *targetID)
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if err != nil {
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return nil, err
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}
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return buildMembershipEventDirect(ctx, targetSenderID, reason, profile.DisplayName, profile.AvatarURL,
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senderID, device.UserDomain(), membership, roomID, isDirect, identity.KeyID, identity.PrivateKey, evTime, rsAPI)
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}
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// loadProfile lookups the profile of a given user from the database and returns
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// it if the user is local to this server, or returns an empty profile if not.
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// Returns an error if the retrieval failed or if the first parameter isn't a
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// valid Matrix ID.
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func loadProfile(
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ctx context.Context,
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userID string,
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cfg *config.ClientAPI,
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profileAPI userapi.ClientUserAPI,
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asAPI appserviceAPI.AppServiceInternalAPI,
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) (*authtypes.Profile, error) {
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_, serverName, err := gomatrixserverlib.SplitID('@', userID)
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if err != nil {
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return nil, err
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}
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var profile *authtypes.Profile
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if cfg.Matrix.IsLocalServerName(serverName) {
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profile, err = appserviceAPI.RetrieveUserProfile(ctx, userID, asAPI, profileAPI)
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} else {
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profile = &authtypes.Profile{}
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}
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return profile, err
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}
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|
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func extractRequestData(req *http.Request) (body *threepid.MembershipRequest, evTime time.Time, resErr *util.JSONResponse) {
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if reqErr := httputil.UnmarshalJSONRequest(req, &body); reqErr != nil {
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resErr = reqErr
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return
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}
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evTime, err := httputil.ParseTSParam(req)
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if err != nil {
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resErr = &util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: spec.InvalidParam(err.Error()),
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}
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return
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}
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return
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}
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|
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func checkAndProcessThreepid(
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req *http.Request,
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device *userapi.Device,
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body *threepid.MembershipRequest,
|
|
cfg *config.ClientAPI,
|
|
rsAPI roomserverAPI.ClientRoomserverAPI,
|
|
profileAPI userapi.ClientUserAPI,
|
|
roomID string,
|
|
evTime time.Time,
|
|
) (inviteStored bool, errRes *util.JSONResponse) {
|
|
|
|
inviteStored, err := threepid.CheckAndProcessInvite(
|
|
req.Context(), device, body, cfg, rsAPI, profileAPI,
|
|
roomID, evTime,
|
|
)
|
|
switch e := err.(type) {
|
|
case nil:
|
|
case threepid.ErrMissingParameter:
|
|
util.GetLogger(req.Context()).WithError(err).Error("threepid.CheckAndProcessInvite failed")
|
|
return inviteStored, &util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: spec.BadJSON(err.Error()),
|
|
}
|
|
case threepid.ErrNotTrusted:
|
|
util.GetLogger(req.Context()).WithError(err).Error("threepid.CheckAndProcessInvite failed")
|
|
return inviteStored, &util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: spec.NotTrusted(body.IDServer),
|
|
}
|
|
case eventutil.ErrRoomNoExists:
|
|
util.GetLogger(req.Context()).WithError(err).Error("threepid.CheckAndProcessInvite failed")
|
|
return inviteStored, &util.JSONResponse{
|
|
Code: http.StatusNotFound,
|
|
JSON: spec.NotFound(err.Error()),
|
|
}
|
|
case gomatrixserverlib.BadJSONError:
|
|
util.GetLogger(req.Context()).WithError(err).Error("threepid.CheckAndProcessInvite failed")
|
|
return inviteStored, &util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: spec.BadJSON(e.Error()),
|
|
}
|
|
default:
|
|
util.GetLogger(req.Context()).WithError(err).Error("threepid.CheckAndProcessInvite failed")
|
|
return inviteStored, &util.JSONResponse{
|
|
Code: http.StatusInternalServerError,
|
|
JSON: spec.InternalServerError{},
|
|
}
|
|
}
|
|
return
|
|
}
|
|
|
|
func checkMemberInRoom(ctx context.Context, rsAPI roomserverAPI.ClientRoomserverAPI, userID spec.UserID, roomID string) *util.JSONResponse {
|
|
var membershipRes roomserverAPI.QueryMembershipForUserResponse
|
|
err := rsAPI.QueryMembershipForUser(ctx, &roomserverAPI.QueryMembershipForUserRequest{
|
|
RoomID: roomID,
|
|
UserID: userID,
|
|
}, &membershipRes)
|
|
if err != nil {
|
|
util.GetLogger(ctx).WithError(err).Error("QueryMembershipForUser: could not query membership for user")
|
|
return &util.JSONResponse{
|
|
Code: http.StatusInternalServerError,
|
|
JSON: spec.InternalServerError{},
|
|
}
|
|
}
|
|
if !membershipRes.IsInRoom {
|
|
return &util.JSONResponse{
|
|
Code: http.StatusForbidden,
|
|
JSON: spec.Forbidden("user does not belong to room"),
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func SendForget(
|
|
req *http.Request, device *userapi.Device,
|
|
roomID string, rsAPI roomserverAPI.ClientRoomserverAPI,
|
|
) util.JSONResponse {
|
|
ctx := req.Context()
|
|
logger := util.GetLogger(ctx).WithField("roomID", roomID).WithField("userID", device.UserID)
|
|
|
|
deviceUserID, err := spec.NewUserID(device.UserID, true)
|
|
if err != nil {
|
|
return util.JSONResponse{
|
|
Code: http.StatusForbidden,
|
|
JSON: spec.Forbidden("You don't have permission to kick this user, bad userID"),
|
|
}
|
|
}
|
|
|
|
var membershipRes roomserverAPI.QueryMembershipForUserResponse
|
|
membershipReq := roomserverAPI.QueryMembershipForUserRequest{
|
|
RoomID: roomID,
|
|
UserID: *deviceUserID,
|
|
}
|
|
err = rsAPI.QueryMembershipForUser(ctx, &membershipReq, &membershipRes)
|
|
if err != nil {
|
|
logger.WithError(err).Error("QueryMembershipForUser: could not query membership for user")
|
|
return util.JSONResponse{
|
|
Code: http.StatusInternalServerError,
|
|
JSON: spec.InternalServerError{},
|
|
}
|
|
}
|
|
if !membershipRes.RoomExists {
|
|
return util.JSONResponse{
|
|
Code: http.StatusForbidden,
|
|
JSON: spec.Forbidden("room does not exist"),
|
|
}
|
|
}
|
|
if membershipRes.IsInRoom {
|
|
return util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: spec.Unknown(fmt.Sprintf("User %s is in room %s", device.UserID, roomID)),
|
|
}
|
|
}
|
|
|
|
request := roomserverAPI.PerformForgetRequest{
|
|
RoomID: roomID,
|
|
UserID: device.UserID,
|
|
}
|
|
response := roomserverAPI.PerformForgetResponse{}
|
|
if err := rsAPI.PerformForget(ctx, &request, &response); err != nil {
|
|
logger.WithError(err).Error("PerformForget: unable to forget room")
|
|
return util.JSONResponse{
|
|
Code: http.StatusInternalServerError,
|
|
JSON: spec.InternalServerError{},
|
|
}
|
|
}
|
|
return util.JSONResponse{
|
|
Code: http.StatusOK,
|
|
JSON: struct{}{},
|
|
}
|
|
}
|
|
|
|
func getPowerlevels(req *http.Request, rsAPI roomserverAPI.ClientRoomserverAPI, roomID string) (*gomatrixserverlib.PowerLevelContent, *util.JSONResponse) {
|
|
plEvent := roomserverAPI.GetStateEvent(req.Context(), rsAPI, roomID, gomatrixserverlib.StateKeyTuple{
|
|
EventType: spec.MRoomPowerLevels,
|
|
StateKey: "",
|
|
})
|
|
if plEvent == nil {
|
|
return nil, &util.JSONResponse{
|
|
Code: http.StatusForbidden,
|
|
JSON: spec.Forbidden("You don't have permission to perform this action, no power_levels event in this room."),
|
|
}
|
|
}
|
|
pl, err := plEvent.PowerLevels()
|
|
if err != nil {
|
|
return nil, &util.JSONResponse{
|
|
Code: http.StatusForbidden,
|
|
JSON: spec.Forbidden("You don't have permission to perform this action, the power_levels event for this room is malformed so auth checks cannot be performed."),
|
|
}
|
|
}
|
|
return pl, nil
|
|
}
|