Satisfy gosec on the proxy count and the request log

G115: the trusted-proxy count is stored as an int64 instead of narrowing
it to int32. G706: the request logger and serverError quote the request
method and route; the logger's remaining taint comes from the wrapped
response writer, so it carries a justified nosec like the other quoted log
lines.

Claude-Session: https://claude.ai/code/session_016mBLURvJoMuUEr9cB2RpUN

internal/api/auth.go

@@ -132,7 +132,7 @@ func purgeRateLimits(ctx context.Context, db *sql.DB) {
 
 // trustedProxies is how many X-Forwarded-For hops clientAddr trusts. Set once
 // by NewRouter from config.
-var trustedProxies atomic.Int32
+var trustedProxies atomic.Int64
 
 // clientAddr is the address a login is counted against. Behind the gateway
 // RemoteAddr is the gateway itself, so the client address is read from

internal/api/helpers.go

@@ -77,7 +77,7 @@ func serverError(w http.ResponseWriter, r *http.Request, err error) {
 	if rc := chi.RouteContext(r.Context()); rc != nil && rc.RoutePattern() != "" {
 		route = rc.RoutePattern()
 	}
-	log.Printf("%s %s: %v", r.Method, route, err)
+	log.Printf("%s %s: %v", strconv.Quote(r.Method), strconv.Quote(route), err)
 	respond(w, http.StatusInternalServerError, errResp("internal error"))
 }
 

internal/api/middleware.go

@@ -447,6 +447,6 @@ func requestLogger(next http.Handler) http.Handler {
 		if status == 0 {
 			status = http.StatusOK
 		}
-		log.Printf("%s %s %d %dB %s", r.Method, route, status, ww.BytesWritten(), time.Since(start).Round(time.Millisecond))
+		log.Printf("%q %q %d %dB %s", r.Method, route, status, ww.BytesWritten(), time.Since(start).Round(time.Millisecond)) // #nosec G706 -- method and route are %q-quoted, the route is a registered pattern, the rest are numbers
 	})
 }

internal/api/router.go

@@ -23,7 +23,7 @@ func NewRouter(db *sql.DB, notify NotifyConfig, cfg config.Config, version strin
 	// One limiter each, both process-wide for the life of the router: login
 	// counts failed passwords, sign-up counts account creation, and mixing the
 	// two would let a burst of sign-ups lock somebody out of logging in.
-	trustedProxies.Store(int32(cfg.TrustedProxies))
+	trustedProxies.Store(int64(cfg.TrustedProxies))
 	loginLimit := newLoginLimiter(db)
 	signupLimiter := newLoginLimiter(db)
 	oidcLimit := newLoginLimiter(db)