diff -r 000000000000 -r 6474c204b198 dom/base/nsContentPermissionHelper.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/base/nsContentPermissionHelper.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,358 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifdef MOZ_WIDGET_GONK
+#include "GonkPermission.h"
+#include "mozilla/dom/ContentParent.h"
+#endif // MOZ_WIDGET_GONK
+#include "nsCOMPtr.h"
+#include "nsIDOMElement.h"
+#include "nsIPrincipal.h"
+#include "mozilla/dom/Element.h"
+#include "mozilla/dom/PContentPermission.h"
+#include "mozilla/dom/PermissionMessageUtils.h"
+#include "mozilla/dom/PContentPermissionRequestParent.h"
+#include "mozilla/dom/TabParent.h"
+#include "mozilla/unused.h"
+#include "nsComponentManagerUtils.h"
+#include "nsArrayUtils.h"
+#include "nsIMutableArray.h"
+#include "nsContentPermissionHelper.h"
+#include "nsCxPusher.h"
+#include "nsJSUtils.h"
+#include "nsISupportsPrimitives.h"
+
+using mozilla::unused;          // <snicker>
+using namespace mozilla::dom;
+using namespace mozilla;
+
+namespace mozilla {
+namespace dom {
+
+class ContentPermissionRequestParent : public PContentPermissionRequestParent
+{
+ public:
+  ContentPermissionRequestParent(const nsTArray<PermissionRequest>& aRequests,
+                                 Element* element,
+                                 const IPC::Principal& principal);
+  virtual ~ContentPermissionRequestParent();
+
+  bool IsBeingDestroyed();
+
+  nsCOMPtr<nsIPrincipal> mPrincipal;
+  nsCOMPtr<Element> mElement;
+  nsRefPtr<nsContentPermissionRequestProxy> mProxy;
+  nsTArray<PermissionRequest> mRequests;
+
+ private:
+  virtual bool Recvprompt();
+  virtual void ActorDestroy(ActorDestroyReason why);
+};
+
+ContentPermissionRequestParent::ContentPermissionRequestParent(const nsTArray<PermissionRequest>& aRequests,
+                                                               Element* aElement,
+                                                               const IPC::Principal& aPrincipal)
+{
+  MOZ_COUNT_CTOR(ContentPermissionRequestParent);
+
+  mPrincipal = aPrincipal;
+  mElement   = aElement;
+  mRequests  = aRequests;
+}
+
+ContentPermissionRequestParent::~ContentPermissionRequestParent()
+{
+  MOZ_COUNT_DTOR(ContentPermissionRequestParent);
+}
+
+bool
+ContentPermissionRequestParent::Recvprompt()
+{
+  mProxy = new nsContentPermissionRequestProxy();
+  NS_ASSERTION(mProxy, "Alloc of request proxy failed");
+  if (NS_FAILED(mProxy->Init(mRequests, this))) {
+    mProxy->Cancel();
+  }
+  return true;
+}
+
+void
+ContentPermissionRequestParent::ActorDestroy(ActorDestroyReason why)
+{
+  if (mProxy) {
+    mProxy->OnParentDestroyed();
+  }
+}
+
+bool
+ContentPermissionRequestParent::IsBeingDestroyed()
+{
+  // When TabParent::Destroy() is called, we are being destroyed. It's unsafe
+  // to send out any message now.
+  TabParent* tabParent = static_cast<TabParent*>(Manager());
+  return tabParent->IsDestroyed();
+}
+
+NS_IMPL_ISUPPORTS(ContentPermissionType, nsIContentPermissionType)
+
+ContentPermissionType::ContentPermissionType(const nsACString& aType,
+                                             const nsACString& aAccess,
+                                             const nsTArray<nsString>& aOptions)
+{
+  mType = aType;
+  mAccess = aAccess;
+  mOptions = aOptions;
+}
+
+ContentPermissionType::~ContentPermissionType()
+{
+}
+
+NS_IMETHODIMP
+ContentPermissionType::GetType(nsACString& aType)
+{
+  aType = mType;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+ContentPermissionType::GetAccess(nsACString& aAccess)
+{
+  aAccess = mAccess;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+ContentPermissionType::GetOptions(nsIArray** aOptions)
+{
+  NS_ENSURE_ARG_POINTER(aOptions);
+
+  *aOptions = nullptr;
+
+  nsresult rv;
+  nsCOMPtr<nsIMutableArray> options =
+    do_CreateInstance(NS_ARRAY_CONTRACTID, &rv);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // copy options into JS array
+  for (uint32_t i = 0; i < mOptions.Length(); ++i) {
+    nsCOMPtr<nsISupportsString> isupportsString =
+      do_CreateInstance(NS_SUPPORTS_STRING_CONTRACTID, &rv);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    rv = isupportsString->SetData(mOptions[i]);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    rv = options->AppendElement(isupportsString, false);
+    NS_ENSURE_SUCCESS(rv, rv);
+  }
+
+  NS_ADDREF(*aOptions = options);
+  return NS_OK;
+}
+
+uint32_t
+ConvertPermissionRequestToArray(nsTArray<PermissionRequest>& aSrcArray,
+                                nsIMutableArray* aDesArray)
+{
+  uint32_t len = aSrcArray.Length();
+  for (uint32_t i = 0; i < len; i++) {
+    nsRefPtr<ContentPermissionType> cpt =
+      new ContentPermissionType(aSrcArray[i].type(),
+                                aSrcArray[i].access(),
+                                aSrcArray[i].options());
+    aDesArray->AppendElement(cpt, false);
+  }
+  return len;
+}
+
+nsresult
+CreatePermissionArray(const nsACString& aType,
+                      const nsACString& aAccess,
+                      const nsTArray<nsString>& aOptions,
+                      nsIArray** aTypesArray)
+{
+  nsCOMPtr<nsIMutableArray> types = do_CreateInstance(NS_ARRAY_CONTRACTID);
+  nsRefPtr<ContentPermissionType> permType = new ContentPermissionType(aType,
+                                                                       aAccess,
+                                                                       aOptions);
+  types->AppendElement(permType, false);
+  types.forget(aTypesArray);
+
+  return NS_OK;
+}
+
+PContentPermissionRequestParent*
+CreateContentPermissionRequestParent(const nsTArray<PermissionRequest>& aRequests,
+                                     Element* element,
+                                     const IPC::Principal& principal)
+{
+  return new ContentPermissionRequestParent(aRequests, element, principal);
+}
+
+} // namespace dom
+} // namespace mozilla
+
+nsContentPermissionRequestProxy::nsContentPermissionRequestProxy()
+{
+  MOZ_COUNT_CTOR(nsContentPermissionRequestProxy);
+}
+
+nsContentPermissionRequestProxy::~nsContentPermissionRequestProxy()
+{
+  MOZ_COUNT_DTOR(nsContentPermissionRequestProxy);
+}
+
+nsresult
+nsContentPermissionRequestProxy::Init(const nsTArray<PermissionRequest>& requests,
+                                      ContentPermissionRequestParent* parent)
+{
+  NS_ASSERTION(parent, "null parent");
+  mParent = parent;
+  mPermissionRequests = requests;
+
+  nsCOMPtr<nsIContentPermissionPrompt> prompt = do_CreateInstance(NS_CONTENT_PERMISSION_PROMPT_CONTRACTID);
+  if (!prompt) {
+    return NS_ERROR_FAILURE;
+  }
+
+  prompt->Prompt(this);
+  return NS_OK;
+}
+
+void
+nsContentPermissionRequestProxy::OnParentDestroyed()
+{
+  mParent = nullptr;
+}
+
+NS_IMPL_ISUPPORTS(nsContentPermissionRequestProxy, nsIContentPermissionRequest)
+
+NS_IMETHODIMP
+nsContentPermissionRequestProxy::GetTypes(nsIArray** aTypes)
+{
+  nsCOMPtr<nsIMutableArray> types = do_CreateInstance(NS_ARRAY_CONTRACTID);
+  if (ConvertPermissionRequestToArray(mPermissionRequests, types)) {
+    types.forget(aTypes);
+    return NS_OK;
+  }
+  return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsContentPermissionRequestProxy::GetWindow(nsIDOMWindow * *aRequestingWindow)
+{
+  NS_ENSURE_ARG_POINTER(aRequestingWindow);
+  *aRequestingWindow = nullptr; // ipc doesn't have a window
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsContentPermissionRequestProxy::GetPrincipal(nsIPrincipal * *aRequestingPrincipal)
+{
+  NS_ENSURE_ARG_POINTER(aRequestingPrincipal);
+  if (mParent == nullptr) {
+    return NS_ERROR_FAILURE;
+  }
+
+  NS_ADDREF(*aRequestingPrincipal = mParent->mPrincipal);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsContentPermissionRequestProxy::GetElement(nsIDOMElement * *aRequestingElement)
+{
+  NS_ENSURE_ARG_POINTER(aRequestingElement);
+  if (mParent == nullptr) {
+    return NS_ERROR_FAILURE;
+  }
+
+  nsCOMPtr<nsIDOMElement> elem = do_QueryInterface(mParent->mElement);
+  elem.forget(aRequestingElement);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsContentPermissionRequestProxy::Cancel()
+{
+  if (mParent == nullptr) {
+    return NS_ERROR_FAILURE;
+  }
+
+  // Don't send out the delete message when the managing protocol (PBrowser) is
+  // being destroyed and PContentPermissionRequest will soon be.
+  if (mParent->IsBeingDestroyed()) {
+    return NS_ERROR_FAILURE;
+  }
+
+  nsTArray<PermissionChoice> emptyChoices;
+
+  unused << ContentPermissionRequestParent::Send__delete__(mParent, false, emptyChoices);
+  mParent = nullptr;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsContentPermissionRequestProxy::Allow(JS::HandleValue aChoices)
+{
+  if (mParent == nullptr) {
+    return NS_ERROR_FAILURE;
+  }
+
+  // Don't send out the delete message when the managing protocol (PBrowser) is
+  // being destroyed and PContentPermissionRequest will soon be.
+  if (mParent->IsBeingDestroyed()) {
+    return NS_ERROR_FAILURE;
+  }
+
+#ifdef MOZ_WIDGET_GONK
+  uint32_t len = mPermissionRequests.Length();
+  for (uint32_t i = 0; i < len; i++) {
+    if (mPermissionRequests[i].type().Equals("audio-capture")) {
+      GonkPermissionService::GetInstance()->addGrantInfo(
+        "android.permission.RECORD_AUDIO",
+        static_cast<TabParent*>(mParent->Manager())->Manager()->Pid());
+    }
+    if (mPermissionRequests[i].type().Equals("video-capture")) {
+      GonkPermissionService::GetInstance()->addGrantInfo(
+        "android.permission.CAMERA",
+        static_cast<TabParent*>(mParent->Manager())->Manager()->Pid());
+    }
+  }
+#endif
+
+  nsTArray<PermissionChoice> choices;
+  if (aChoices.isNullOrUndefined()) {
+    // No choice is specified.
+  } else if (aChoices.isObject()) {
+    // Iterate through all permission types.
+    for (uint32_t i = 0; i < mPermissionRequests.Length(); ++i) {
+      nsCString type = mPermissionRequests[i].type();
+
+      mozilla::AutoSafeJSContext cx;
+      JS::Rooted<JSObject*> obj(cx, &aChoices.toObject());
+      JSAutoCompartment ac(cx, obj);
+
+      JS::Rooted<JS::Value> val(cx);
+
+      if (!JS_GetProperty(cx, obj, type.BeginReading(), &val) ||
+          !val.isString()) {
+        // no setting for the permission type, skip it
+      } else {
+        nsDependentJSString choice;
+        if (!choice.init(cx, val)) {
+          return NS_ERROR_FAILURE;
+        }
+        choices.AppendElement(PermissionChoice(type, choice));
+      }
+    }
+  } else {
+    MOZ_ASSERT(false, "SelectedChoices should be undefined or an JS object");
+    return NS_ERROR_FAILURE;
+  }
+
+  unused << ContentPermissionRequestParent::Send__delete__(mParent, true, choices);
+  mParent = nullptr;
+  return NS_OK;
+}