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client/web: remove duplicate WhoIs call

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Fixes a TODO in web.authorizeRequest.

`getSession` calls `WhoIs` already. Call `getSession` earlier in
`authorizeRequest` so we can avoid the duplicate `WhoIs` check on
the same request.

Updates #10261

Signed-off-by: Sonia Appasamy <sonia@tailscale.com>
This commit is contained in:
Sonia Appasamy 2023-11-29 13:16:32 -05:00 committed by Sonia Appasamy
parent bc4e303846
commit 7aa981ba49
1 changed files with 3 additions and 8 deletions
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11
client/web/web.go
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@ -327,22 +327,17 @@ func (s *Server) requireTailscaleIP(w http.ResponseWriter, r *http.Request) (han
// errors to the ResponseWriter itself.
func (s *Server) authorizeRequest(w http.ResponseWriter, r *http.Request) (ok bool) {
if s.mode == ManageServerMode { // client using tailscale auth
_, err := s.lc.WhoIs(r.Context(), r.RemoteAddr)
session, _, err := s.getSession(r)
switch {
case err != nil:
case errors.Is(err, errNotUsingTailscale):
// All requests must be made over tailscale.
http.Error(w, "must access over tailscale", http.StatusUnauthorized)
return false
case r.URL.Path == "/api/data" && r.Method == httpm.GET:
// Readonly endpoint allowed without browser session.
// Readonly endpoint allowed without valid browser session.
return true
case strings.HasPrefix(r.URL.Path, "/api/"):
// All other /api/ endpoints require a valid browser session.
//
// TODO(sonia): s.getSession calls whois again,
// should try and use the above call instead of running another
// localapi request.
session, _, err := s.getSession(r)
if err != nil || !session.isAuthorized(s.timeNow()) {
http.Error(w, "no valid session", http.StatusUnauthorized)
return false