Bug 536509 - Update localStorage to use common StorageAllowedForWindow logic, r=ehsan

dom/base/nsGlobalWindow.cpp

@@ -10937,7 +10937,7 @@ nsGlobalWindow::GetLocalStorage(ErrorResult& aError)
   }
 
   if (!mLocalStorage) {
-    if (!DOMStorage::CanUseStorage()) {
+    if (!DOMStorage::CanUseStorage(this)) {
       aError.Throw(NS_ERROR_DOM_SECURITY_ERR);
       return nullptr;
     }
@@ -10955,13 +10955,6 @@ nsGlobalWindow::GetLocalStorage(ErrorResult& aError)
       return nullptr;
     }
 
-    // If the document has the sandboxed origin flag set
-    // don't allow access to localStorage.
-    if (mDoc && (mDoc->GetSandboxFlags() & SANDBOXED_ORIGIN)) {
-      aError.Throw(NS_ERROR_DOM_SECURITY_ERR);
-      return nullptr;
-    }
-
     nsString documentURI;
     if (mDoc) {
       mDoc->GetDocumentURI(documentURI);

dom/storage/DOMStorage.cpp

@@ -13,13 +13,14 @@
 #include "nsIPermissionManager.h"
 #include "nsIPrincipal.h"
 #include "nsICookiePermission.h"
-#include "nsICookieService.h"
+#include "nsPIDOMWindow.h"
 
 #include "mozilla/dom/StorageBinding.h"
 #include "mozilla/dom/StorageEvent.h"
 #include "mozilla/dom/StorageEventBinding.h"
 #include "mozilla/Services.h"
 #include "mozilla/Preferences.h"
+#include "mozilla/EnumSet.h"
 #include "nsThreadUtils.h"
 #include "nsContentUtils.h"
 #include "nsServiceManagerUtils.h"
@@ -70,7 +71,7 @@ DOMStorage::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
 uint32_t
 DOMStorage::GetLength(ErrorResult& aRv)
 {
-  if (!CanUseStorage(this)) {
+  if (!CanUseStorage(nullptr, this)) {
     aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
     return 0;
   }
@@ -83,7 +84,7 @@ DOMStorage::GetLength(ErrorResult& aRv)
 void
 DOMStorage::Key(uint32_t aIndex, nsAString& aResult, ErrorResult& aRv)
 {
-  if (!CanUseStorage(this)) {
+  if (!CanUseStorage(nullptr, this)) {
     aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
     return;
   }
@@ -94,7 +95,7 @@ DOMStorage::Key(uint32_t aIndex, nsAString& aResult, ErrorResult& aRv)
 void
 DOMStorage::GetItem(const nsAString& aKey, nsAString& aResult, ErrorResult& aRv)
 {
-  if (!CanUseStorage(this)) {
+  if (!CanUseStorage(nullptr, this)) {
     aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
     return;
   }
@@ -106,7 +107,7 @@ void
 DOMStorage::SetItem(const nsAString& aKey, const nsAString& aData,
                     ErrorResult& aRv)
 {
-  if (!CanUseStorage(this)) {
+  if (!CanUseStorage(nullptr, this)) {
     aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
     return;
   }
@@ -139,7 +140,7 @@ DOMStorage::SetItem(const nsAString& aKey, const nsAString& aData,
 void
 DOMStorage::RemoveItem(const nsAString& aKey, ErrorResult& aRv)
 {
-  if (!CanUseStorage(this)) {
+  if (!CanUseStorage(nullptr, this)) {
     aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
     return;
   }
@@ -158,7 +159,7 @@ DOMStorage::RemoveItem(const nsAString& aKey, ErrorResult& aRv)
 void
 DOMStorage::Clear(ErrorResult& aRv)
 {
-  if (!CanUseStorage(this)) {
+  if (!CanUseStorage(nullptr, this)) {
     aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
     return;
   }
@@ -236,60 +237,32 @@ static const char kCookiesLifetimePolicy[] = "network.cookie.lifetimePolicy";
 
 // static, public
 bool
-DOMStorage::CanUseStorage(DOMStorage* aStorage)
+DOMStorage::CanUseStorage(nsPIDOMWindow* aWindow, DOMStorage* aStorage)
 {
   // This method is responsible for correct setting of mIsSessionOnly.
   // It doesn't work with mIsPrivate flag at all, since it is checked
   // regardless mIsSessionOnly flag in DOMStorageCache code.
-  if (aStorage) {
-    aStorage->mIsSessionOnly = false;
-  }
 
   if (!mozilla::Preferences::GetBool(kStorageEnabled)) {
     return false;
   }
 
-  // chrome can always use aStorage regardless of permission preferences
-  nsCOMPtr<nsIPrincipal> subjectPrincipal =
-    nsContentUtils::SubjectPrincipal();
-  if (nsContentUtils::IsSystemPrincipal(subjectPrincipal)) {
-    return true;
+  nsContentUtils::StorageAccess access = nsContentUtils::StorageAccess::eDeny;
+  if (aWindow) {
+    access = nsContentUtils::StorageAllowedForWindow(aWindow);
+  } else if (aStorage) {
+    access = nsContentUtils::StorageAllowedForPrincipal(aStorage->mPrincipal);
   }
 
-  nsCOMPtr<nsIPermissionManager> permissionManager =
-    services::GetPermissionManager();
-  if (!permissionManager) {
+  if (access == nsContentUtils::StorageAccess::eDeny) {
     return false;
   }
 
-  uint32_t perm;
-  permissionManager->TestPermissionFromPrincipal(subjectPrincipal,
-                                                 kPermissionType, &perm);
-
-  if (perm == nsIPermissionManager::DENY_ACTION) {
-    return false;
-  }
-
-  if (perm == nsICookiePermission::ACCESS_SESSION) {
-    if (aStorage) {
-      aStorage->mIsSessionOnly = true;
-    }
-  } else if (perm != nsIPermissionManager::ALLOW_ACTION) {
-    uint32_t cookieBehavior = Preferences::GetUint(kCookiesBehavior);
-    uint32_t lifetimePolicy = Preferences::GetUint(kCookiesLifetimePolicy);
-
-    // Treat "ask every time" as "reject always".
-    if (cookieBehavior == nsICookieService::BEHAVIOR_REJECT ||
-        lifetimePolicy == nsICookieService::ASK_BEFORE_ACCEPT) {
-      return false;
-    }
-
-    if (lifetimePolicy == nsICookieService::ACCEPT_SESSION && aStorage) {
-      aStorage->mIsSessionOnly = true;
-    }
-  }
-
   if (aStorage) {
+    aStorage->mIsSessionOnly = access <= nsContentUtils::StorageAccess::eSessionScoped;
+
+    nsCOMPtr<nsIPrincipal> subjectPrincipal =
+      nsContentUtils::SubjectPrincipal();
     return aStorage->CanAccess(subjectPrincipal);
   }
 
@@ -327,7 +300,7 @@ DOMStorage::CanAccess(nsIPrincipal* aPrincipal)
 void
 DOMStorage::GetSupportedNames(unsigned, nsTArray<nsString>& aKeys)
 {
-  if (!CanUseStorage(this)) {
+  if (!CanUseStorage(nullptr, this)) {
     // return just an empty array
     aKeys.Clear();
     return;

dom/storage/DOMStorage.h

@@ -18,6 +18,7 @@
 
 class nsIPrincipal;
 class nsIDOMWindow;
+class nsPIDOMWindow;
 
 namespace mozilla {
 namespace dom {
@@ -122,7 +123,7 @@ public:
   // It is an optimization since the privileges check and session only
   // state determination are complex and share the code (comes hand in
   // hand together).
-  static bool CanUseStorage(DOMStorage* aStorage = nullptr);
+  static bool CanUseStorage(nsPIDOMWindow* aWindow, DOMStorage* aStorage = nullptr);
 
   bool IsPrivate() const { return mIsPrivate; }
   bool IsSessionOnly() const { return mIsSessionOnly; }

dom/tests/mochitest/localstorage/frameLocalStorageCookieSettings.html

@@ -0,0 +1,20 @@
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>localStorage cookies settings test</title>
+
+<script type="text/javascript" src="interOriginFrame.js"></script>
+
+</head>
+<body>
+<script type="text/javascript">
+  try {
+    localStorage.setItem("contentkey", "test-value");
+    ok(false, "Setting localStorageItem should throw a security exception");
+  } catch(ex) {
+    is(ex.name, "SecurityError");
+  }
+
+  finishTest();
+</script>
+</body>
+</html>

dom/tests/mochitest/localstorage/interOriginFrame.js

@@ -49,7 +49,9 @@ function todo(a, b, message)
 
 function finishTest()
 {
-  localStorage.clear();
+  try {
+    localStorage.clear();
+  } catch (e) {}
   postMsg("done");
   return false;
 }

dom/tests/mochitest/localstorage/mochitest.ini

@@ -2,6 +2,7 @@
 support-files =
   frameAppIsolation.html
   frameChromeSlave.html
+  frameLocalStorageCookieSettings.html
   frameKeySync.html
   frameMasterEqual.html
   frameMasterNotEqual.html

dom/tests/mochitest/localstorage/test_localStorageCookieSettings.html

@@ -3,8 +3,13 @@
 <title>localStorage cookies settings test</title>
 
 <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+<script type="text/javascript" src="interOriginTest.js"></script>
 <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
 
+</head>
+<body>
+<iframe></iframe>
+
 <script type="text/javascript">
 
 SimpleTest.waitForExplicitFinish();
@@ -37,11 +42,33 @@ function test2() {
     is(ex.name, "SecurityError");
   }
 
+  // Set cookies behavior to "reject 3rd party"
+  SpecialPowers.pushPrefEnv({"set": [["network.cookie.cookieBehavior", 1]],
+                             "clear": [["network.cookie.lifetimePolicy"]]},
+                            test3);
+}
+
+function test3() {
+  try {
+    localStorage.setItem("contentkey", "test-value");
+    ok(true, "Setting localStorageItem should not throw a security exception");
+  }
+  catch(ex) {
+    ok(false, "Setting localStorageItem should not throw a security exception");
+  }
+
+  var fileTest = (location.protocol + "//example.com" + location.pathname)
+                 .replace("test_l", "frameL");
+
+  var myframe = document.querySelector("iframe");
+  myframe.src = fileTest;
+}
+
+// Called by interOriginTest.js
+function doNextTest() {
   SimpleTest.finish();
 }
 
 </script>
-</head>
-<body>
 </body>
 </html>