Swift: Model referrerURL.

Author: geoffw0

swift/ql/lib/codeql/swift/frameworks/StandardLibrary/CustomUrlSchemes.qll

@@ -81,7 +81,7 @@ private class UserActivityUrlInheritTaint extends TaintInheritingContent,
 {
   UserActivityUrlInheritTaint() {
     this.getField().getEnclosingDecl().asNominalTypeDecl().getName() = "NSUserActivity" and
-    this.getField().getName() = "webpageURL"
+    this.getField().getName() = ["webpageURL", "referrerURL"]
   }
 }
 

swift/ql/test/library-tests/dataflow/flowsources/customurlschemes.swift

@@ -107,14 +107,14 @@ class SceneDelegate : UISceneDelegate {
       let x = `continue`.webpageURL
       x // $ tainted
       let y = `continue`.referrerURL
-      y // $ MISSING: tainted
+      y // $ tainted
     }
 
     func scene(_: UIScene, didUpdate: NSUserActivity) { // $ source=remote
       let x = didUpdate.webpageURL
       x // $ tainted
       let y = didUpdate.referrerURL
-      y // $ MISSING: tainted
+      y // $ tainted
     }
 
     func scene(_: UIScene, openURLContexts: Set<UIOpenURLContext>) { // $ source=remote
@@ -146,14 +146,14 @@ extension Extended : UISceneDelegate {
       let x = `continue`.webpageURL
       x // $ tainted
       let y = `continue`.referrerURL
-      y // $ MISSING: tainted
+      y // $ tainted
     }
 
     func scene(_: UIScene, didUpdate: NSUserActivity) { // $ source=remote
       let x = didUpdate.webpageURL
       x // $ tainted
       let y = didUpdate.referrerURL
-      y // $ MISSING: tainted
+      y // $ tainted
     }
 
     func scene(_: UIScene, openURLContexts: Set<UIOpenURLContext>) { // $ source=remote