Revoke oauth token on signout

mastodon/mastodon.go

@@ -138,6 +138,16 @@ func (c *Client) AuthenticateToken(ctx context.Context, authCode, redirectURI st
 	return c.authenticate(ctx, params)
 }
 
+func (c *Client) RevokeToken(ctx context.Context) error {
+	params := url.Values{
+		"client_id":     {c.config.ClientID},
+		"client_secret": {c.config.ClientSecret},
+		"token":         {c.GetAccessToken(ctx)},
+	}
+
+	return c.doAPI(ctx, http.MethodPost, "/oauth/revoke", params, nil, nil)
+}
+
 func (c *Client) authenticate(ctx context.Context, params url.Values) error {
 	u, err := url.Parse(c.config.Server)
 	if err != nil {

service/service.go

@@ -902,6 +902,10 @@ func (s *service) Signin(c *client, code string) (err error) {
 	return c.setSession(c.s)
 }
 
+func (s *service) Signout(c *client) (err error) {
+	return c.RevokeToken(c.ctx)
+}
+
 func (s *service) Post(c *client, content string, replyToID string,
 	format string, visibility string, isNSFW bool,
 	files []*multipart.FileHeader) (id string, err error) {

service/transport.go

@@ -676,6 +676,10 @@ func NewHandler(s *service, verbose bool, staticDir string) http.Handler {
 	}, CSRF, HTML)
 
 	signout := handle(func(c *client) error {
+		err := s.Signout(c)
+		if err != nil {
+			return err
+		}
 		c.unsetSession()
 		c.redirect("/")
 		return nil