Add user change password method

README.md

@@ -14,6 +14,7 @@ Implemented from [Client-Server API](https://matrix.org/docs/spec/client_server/
 - [x] [5.4.2 POST /_matrix/client/r0/login](https://matrix.org/docs/spec/client_server/latest#post-matrix-client-r0-login)
 - [x] [5.4.3 POST /_matrix/client/r0/logout](https://matrix.org/docs/spec/client_server/latest#post-matrix-client-r0-logout)
 - [x] [5.4.4 POST /_matrix/client/r0/logout/all](https://matrix.org/docs/spec/client_server/latest#post-matrix-client-r0-logout-all)
+- [x] [5.5.4 POST /_matrix/client/r0/account/password](https://matrix.org/docs/spec/client_server/latest#post-matrix-client-r0-account-password)
 - [x] [5.7.1 GET /_matrix/client/r0/account/whoami](https://matrix.org/docs/spec/client_server/latest#get-matrix-client-r0-account-whoami)
 - [x] [6.1 GET /_matrix/client/r0/capabilities](https://matrix.org/docs/spec/client_server/latest#get-matrix-client-r0-capabilities)
 - [x] [10.4.1 GET /_matrix/client/r0/joined_rooms](https://matrix.org/docs/spec/client_server/latest#get-matrix-client-r0-joined-rooms)

internal/backend.go

@@ -33,6 +33,7 @@ type User interface {
 	SetTopic(room Room, topic string) *models.ApiError
 	SendMessage(room Room, text string) *models.ApiError
 	JoinedRooms() []Room
+	ChangePassword(newPassword string)
 	Logout(token string)
 	LogoutAll()
 }

internal/backends/memory/user.go

@@ -1,6 +1,7 @@
 package memory
 
 import (
+	"sync"
 	"time"
 
 	"github.com/nxshock/signaller/internal"
@@ -15,6 +16,8 @@ type User struct {
 	Tokens   map[string]Token
 
 	backend *Backend
+
+	mutex sync.RWMutex
 }
 
 func (user *User) ID() string {
@@ -173,6 +176,13 @@ func (user *User) JoinedRooms() []internal.Room {
 	return result
 }
 
+func (user *User) ChangePassword(newPassword string) {
+	user.mutex.Lock()
+	defer user.mutex.Unlock()
+
+	user.password = newPassword
+}
+
 func (user *User) Logout(token string) {
 	delete(user.Tokens, token)
 }

internal/backends/memory/user_test.go

@@ -118,3 +118,15 @@ func TestJoinedRooms(t *testing.T) {
 	rooms := user.JoinedRooms()
 	assert.Equal(t, []internal.Room{room}, rooms)
 }
+
+func TestNewPassword(t *testing.T) {
+	backend := NewBackend("localhost")
+
+	var newPassword = "new password"
+
+	user, _, err := backend.Register("user1", "old password", "")
+	assert.Nil(t, err)
+
+	user.ChangePassword(newPassword)
+	assert.Equal(t, newPassword, user.Password())
+}

internal/handlers.go

@@ -14,6 +14,7 @@ import (
 	"github.com/nxshock/signaller/internal/models/capabilities"
 	"github.com/nxshock/signaller/internal/models/joinedrooms"
 	login "github.com/nxshock/signaller/internal/models/login"
+	"github.com/nxshock/signaller/internal/models/password"
 	register "github.com/nxshock/signaller/internal/models/register"
 	mSync "github.com/nxshock/signaller/internal/models/sync"
 	"github.com/nxshock/signaller/internal/models/versions"
@@ -198,6 +199,32 @@ func JoinedRoomsHandler(w http.ResponseWriter, r *http.Request) {
 	sendJsonResponse(w, http.StatusOK, response)
 }
 
+// https://matrix.org/docs/spec/client_server/latest#post-matrix-client-r0-account-password
+func PasswordHandler(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		errorResponse(w, models.M_UNKNOWN, http.StatusBadRequest, "wrong method: "+r.Method)
+		return
+	}
+
+	token := getTokenFromResponse(r)
+	if token == "" {
+		errorResponse(w, models.M_FORBIDDEN, http.StatusForbidden, "")
+	}
+
+	user := currServer.Backend.GetUserByToken(token)
+	if user == nil {
+		errorResponse(w, models.M_UNKNOWN_TOKEN, http.StatusBadRequest, "")
+		return
+	}
+
+	var request password.Request
+	getRequest(r, &request) // TODO: handle error
+
+	user.ChangePassword(request.NewPassword)
+
+	sendJsonResponse(w, http.StatusOK, struct{}{})
+}
+
 // https://models.org/docs/spec/client_server/latest#get-models-client-r0-sync
 func SyncHandler(w http.ResponseWriter, r *http.Request) {
 	var request mSync.SyncRequest

internal/models/password/password.go

@@ -0,0 +1,12 @@
+package password
+
+// https://matrix.org/docs/spec/client_server/latest#post-matrix-client-r0-account-password
+type Request struct {
+	NewPassword string             `json:"new_password"`   // Required. The new password for the account.
+	Auth        AuthenticationData `json:"auth,omitempty"` // Additional authentication information for the user-interactive authentication API.
+}
+
+type AuthenticationData struct {
+	Type    string `json:"type"`    // Required. The login type that the client is attempting to complete.
+	Session string `json:"session"` //The value of the session key given by the homeserver.
+}

internal/server.go

@@ -29,6 +29,7 @@ func New() *Server {
 	router.HandleFunc("/_matrix/client/r0/register", RegisterHandler)
 	router.HandleFunc("/_matrix/client/r0/account/whoami", WhoAmIHandler)
 	router.HandleFunc("/_matrix/client/r0/joined_rooms", JoinedRoomsHandler)
+	router.HandleFunc("/_matrix/client/r0/account/password", PasswordHandler)
 	router.HandleFunc("/_matrix/client/r0/sync", SyncHandler)
 	router.HandleFunc("/_matrix/client/r0/capabilities", CapabilitiesHandler)
 	router.HandleFunc("/", RootHandler)