fix: possible fix for proxy auth requiring login page

License: MIT
Signed-off-by: Henrique Dias <hacdias@gmail.com>

Former-commit-id: aa32ec7e27f24aee497d3c1a6bb3cda4f3f30265 [formerly 92f1d95d44e0a1c0b8dd6d81b467829c8832acc8] [formerly d8c05dc476ae88b730547cce1e3644c69ee17278 [formerly 84f108f1c5]]
Former-commit-id: 9f766a5b8ef847569fb8f4f16540c256fa9ca92f [formerly 0b6b1e48435b3fe5819327e311f08eb179a19b3e]
Former-commit-id: 046dfa8350d2f1b4e7fb789fb026069e137437ef

auth/auth.go

@@ -10,4 +10,6 @@ import (
 type Auther interface {
 	// Auth is called to authenticate a request.
 	Auth(r *http.Request, s *users.Storage, root string) (*users.User, error)
+	// LoginPage indicates if this auther needs a login page.
+	LoginPage() bool
 }

auth/json.go

@@ -59,6 +59,11 @@ func (a JSONAuth) Auth(r *http.Request, sto *users.Storage, root string) (*users
 	return u, nil
 }
 
+// LoginPage tells that json auth doesn't require a login page.
+func (a JSONAuth) LoginPage() bool {
+	return true
+}
+
 const reCaptchaAPI = "/recaptcha/api/siteverify"
 
 // ReCaptcha identifies a recaptcha conenction.

auth/none.go

@@ -17,3 +17,8 @@ type NoAuth struct{}
 func (a NoAuth) Auth(r *http.Request, sto *users.Storage, root string) (*users.User, error) {
 	return sto.Get(root, uint(1))
 }
+
+// LoginPage tells that no auth doesn't require a login page.
+func (a NoAuth) LoginPage() bool {
+	return false
+}

auth/proxy.go

@@ -27,3 +27,8 @@ func (a ProxyAuth) Auth(r *http.Request, sto *users.Storage, root string) (*user
 
 	return user, err
 }
+
+// LoginPage tells that proxy auth doesn't require a login page.
+func (a ProxyAuth) LoginPage() bool {
+	return false
+}

http/static.go

@@ -21,6 +21,11 @@ func handleWithStaticData(w http.ResponseWriter, r *http.Request, d *data, box *
 
 	staticURL := strings.TrimPrefix(d.server.BaseURL+"/static", "/")
 
+	auther, err := d.store.Auth.Get(d.settings.AuthMethod)
+	if err != nil {
+		return http.StatusInternalServerError, err
+	}
+
 	data := map[string]interface{}{
 		"Name":            d.settings.Branding.Name,
 		"DisableExternal": d.settings.Branding.DisableExternal,
@@ -29,6 +34,7 @@ func handleWithStaticData(w http.ResponseWriter, r *http.Request, d *data, box *
 		"StaticURL":       staticURL,
 		"Signup":          d.settings.Signup,
 		"NoAuth":          d.settings.AuthMethod == auth.MethodNoAuth,
+		"LoginPage":       auther.LoginPage(),
 		"CSS":             false,
 		"ReCaptcha":       false,
 	}