gecko-dev/dom/base/URL.cpp
Robert O'Callahan 8950403bd5 Bug 792675. Part 6: Extend createObjectURL to support MediaStreams. r=sicking
--HG--
extra : rebase_source : ffec7b146552362b576e88c6dea24d612a5860b9
2012-09-25 15:24:45 +12:00

102 lines
3.1 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */
#include "URL.h"
#include "nsGlobalWindow.h"
#include "nsIDOMFile.h"
#include "nsIDOMMediaStream.h"
#include "nsIDocument.h"
#include "nsIPrincipal.h"
#include "nsContentUtils.h"
#include "nsHostObjectProtocolHandler.h"
namespace mozilla {
namespace dom {
void
URL::CreateObjectURL(nsISupports* aGlobal, nsIDOMBlob* aBlob,
const objectURLOptions& aOptions,
nsAString& aResult,
ErrorResult& aError)
{
CreateObjectURLInternal(aGlobal, aBlob, NS_LITERAL_CSTRING(BLOBURI_SCHEME),
aOptions, aResult, aError);
}
void
URL::CreateObjectURL(nsISupports* aGlobal, nsIDOMMediaStream* aStream,
const mozilla::dom::objectURLOptions& aOptions,
nsAString& aResult,
ErrorResult& aError)
{
CreateObjectURLInternal(aGlobal, aStream, NS_LITERAL_CSTRING(MEDIASTREAMURI_SCHEME),
aOptions, aResult, aError);
}
void
URL::CreateObjectURLInternal(nsISupports* aGlobal, nsISupports* aObject,
const nsACString& aScheme,
const mozilla::dom::objectURLOptions& aOptions,
nsAString& aResult,
ErrorResult& aError)
{
nsCOMPtr<nsPIDOMWindow> w = do_QueryInterface(aGlobal);
nsGlobalWindow* window = static_cast<nsGlobalWindow*>(w.get());
NS_PRECONDITION(!window || window->IsInnerWindow(),
"Should be inner window");
if (!window || !window->GetExtantDoc()) {
aError.Throw(NS_ERROR_INVALID_POINTER);
return;
}
nsIDocument* doc = window->GetExtantDoc();
nsCString url;
nsresult rv = nsHostObjectProtocolHandler::AddDataEntry(aScheme, aObject,
doc->NodePrincipal(), url);
if (NS_FAILED(rv)) {
aError.Throw(rv);
return;
}
doc->RegisterHostObjectUri(url);
CopyASCIItoUTF16(url, aResult);
}
void
URL::RevokeObjectURL(nsISupports* aGlobal, const nsAString& aURL)
{
nsCOMPtr<nsPIDOMWindow> w = do_QueryInterface(aGlobal);
nsGlobalWindow* window = static_cast<nsGlobalWindow*>(w.get());
NS_PRECONDITION(!window || window->IsInnerWindow(),
"Should be inner window");
if (!window)
return;
NS_LossyConvertUTF16toASCII asciiurl(aURL);
nsIPrincipal* winPrincipal = window->GetPrincipal();
if (!winPrincipal) {
return;
}
nsIPrincipal* principal =
nsHostObjectProtocolHandler::GetDataEntryPrincipal(asciiurl);
bool subsumes;
if (principal && winPrincipal &&
NS_SUCCEEDED(winPrincipal->Subsumes(principal, &subsumes)) &&
subsumes) {
if (window->GetExtantDoc()) {
window->GetExtantDoc()->UnregisterHostObjectUri(asciiurl);
}
nsHostObjectProtocolHandler::RemoveDataEntry(asciiurl);
}
}
}
}