MM-63327 Config setting for ServiceSettings.FrameAncestors (#30409)

* Add Embedding page to system console, with single setting for Frame Ancestors

server/channels/web/handlers_test.go

@@ -343,10 +343,10 @@ func TestHandlerServeCSPHeader(t *testing.T) {
 		response := httptest.NewRecorder()
 		handler.ServeHTTP(response, request)
 		assert.Equal(t, 200, response.Code)
-		assert.Equal(t, []string{"frame-ancestors " + frameAncestors + "; script-src 'self' cdn.rudderlabs.com"}, response.Header()["Content-Security-Policy"])
+		assert.Equal(t, []string{"frame-ancestors 'self' " + *th.App.Config().ServiceSettings.FrameAncestors + "; script-src 'self' cdn.rudderlabs.com"}, response.Header()["Content-Security-Policy"])
 	})
 
-	t.Run("static, with subpath", func(t *testing.T) {
+	t.Run("static, with subpath and frame ancestors", func(t *testing.T) {
 		th := SetupWithStoreMock(t)
 		defer th.TearDown()
 
@@ -367,6 +367,7 @@ func TestHandlerServeCSPHeader(t *testing.T) {
 
 		th.App.UpdateConfig(func(cfg *model.Config) {
 			*cfg.ServiceSettings.SiteURL = *cfg.ServiceSettings.SiteURL + "/subpath"
+			*cfg.ServiceSettings.FrameAncestors = "teams.microsoft.com *.cloud.microsoft"
 		})
 
 		web := New(th.Server)
@@ -384,7 +385,7 @@ func TestHandlerServeCSPHeader(t *testing.T) {
 		response := httptest.NewRecorder()
 		handler.ServeHTTP(response, request)
 		assert.Equal(t, 200, response.Code)
-		assert.Equal(t, []string{"frame-ancestors " + frameAncestors + "; script-src 'self' cdn.rudderlabs.com"}, response.Header()["Content-Security-Policy"])
+		assert.Equal(t, []string{"frame-ancestors 'self' " + *th.App.Config().ServiceSettings.FrameAncestors + "; script-src 'self' cdn.rudderlabs.com"}, response.Header()["Content-Security-Policy"])
 
 		// TODO: It's hard to unit test this now that the CSP directive is effectively
 		// decided in Setup(). Circle back to this in master once the memory store is
@@ -399,7 +400,7 @@ func TestHandlerServeCSPHeader(t *testing.T) {
 		response = httptest.NewRecorder()
 		handler.ServeHTTP(response, request)
 		assert.Equal(t, 200, response.Code)
-		assert.Equal(t, []string{"frame-ancestors " + frameAncestors + "; script-src 'self' cdn.rudderlabs.com"}, response.Header()["Content-Security-Policy"])
+		assert.Equal(t, []string{"frame-ancestors 'self' " + *th.App.Config().ServiceSettings.FrameAncestors + "; script-src 'self' cdn.rudderlabs.com"}, response.Header()["Content-Security-Policy"])
 		// TODO: See above.
 		// assert.Contains(t, response.Header()["Content-Security-Policy"], "frame-ancestors 'self'; script-src 'self' cdn.rudderlabs.com 'sha256-tPOjw+tkVs9axL78ZwGtYl975dtyPHB6LYKAO2R3gR4='", "csp header incorrectly changed after subpath changed")
 	})
@@ -429,7 +430,7 @@ func TestHandlerServeCSPHeader(t *testing.T) {
 		response := httptest.NewRecorder()
 		handler.ServeHTTP(response, request)
 		assert.Equal(t, 200, response.Code)
-		assert.Equal(t, []string{"frame-ancestors " + frameAncestors + "; script-src 'self' cdn.rudderlabs.com 'unsafe-eval' 'unsafe-inline'"}, response.Header()["Content-Security-Policy"])
+		assert.Equal(t, []string{"frame-ancestors 'self' " + *th.App.Config().ServiceSettings.FrameAncestors + "; script-src 'self' cdn.rudderlabs.com 'unsafe-eval' 'unsafe-inline'"}, response.Header()["Content-Security-Policy"])
 	})
 }