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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 "MozNewTabWallpaperProtocolHandler.h"
#include "mozilla/ClearOnShutdown.h"
#include "mozilla/net/NeckoParent.h"
#include "nsContentUtils.h"
#include "nsIFile.h"
#include "nsIFileChannel.h"
#include "nsIFileURL.h"
#include "nsIMIMEService.h"
#include "nsDirectoryServiceUtils.h"
#include "nsAppDirectoryServiceDefs.h"
#include "nsNetUtil.h"
#include "nsURLHelper.h"
#include "prio.h"
#include "SimpleChannel.h"
#define NEWTAB_WALLPAPER_SCHEME "moz-newtab-wallpaper"
namespace mozilla {
namespace net {
StaticRefPtr<MozNewTabWallpaperProtocolHandler>
MozNewTabWallpaperProtocolHandler::sSingleton;
NS_IMPL_QUERY_INTERFACE(MozNewTabWallpaperProtocolHandler,
nsISubstitutingProtocolHandler, nsIProtocolHandler,
nsISupportsWeakReference)
NS_IMPL_ADDREF_INHERITED(MozNewTabWallpaperProtocolHandler,
SubstitutingProtocolHandler)
NS_IMPL_RELEASE_INHERITED(MozNewTabWallpaperProtocolHandler,
SubstitutingProtocolHandler)
already_AddRefed<MozNewTabWallpaperProtocolHandler>
MozNewTabWallpaperProtocolHandler::GetSingleton() {
if (!sSingleton) {
sSingleton = new MozNewTabWallpaperProtocolHandler();
ClearOnShutdown(&sSingleton);
}
return do_AddRef(sSingleton);
}
// A moz-newtab-wallpaper URI is only loadable by chrome pages in the parent
// process, or privileged content running in the privileged about content
// process.
MozNewTabWallpaperProtocolHandler::MozNewTabWallpaperProtocolHandler()
: SubstitutingProtocolHandler(NEWTAB_WALLPAPER_SCHEME) {}
RefPtr<RemoteStreamPromise> MozNewTabWallpaperProtocolHandler::NewStream(
nsIURI* aChildURI, bool* aTerminateSender) {
MOZ_ASSERT(!IsNeckoChild());
MOZ_ASSERT(NS_IsMainThread());
if (!aChildURI || !aTerminateSender) {
return RemoteStreamPromise::CreateAndReject(NS_ERROR_INVALID_ARG, __func__);
}
*aTerminateSender = true;
nsresult rv;
bool isWallpaperScheme = false;
if (NS_FAILED(
aChildURI->SchemeIs(NEWTAB_WALLPAPER_SCHEME, &isWallpaperScheme)) ||
!isWallpaperScheme) {
return RemoteStreamPromise::CreateAndReject(NS_ERROR_UNKNOWN_PROTOCOL,
__func__);
}
nsAutoCString host;
if (NS_FAILED(aChildURI->GetAsciiHost(host)) || host.IsEmpty()) {
return RemoteStreamPromise::CreateAndReject(NS_ERROR_UNEXPECTED, __func__);
}
*aTerminateSender = false;
nsAutoCString resolvedSpec;
rv = ResolveURI(aChildURI, resolvedSpec);
if (NS_FAILED(rv)) {
return RemoteStreamPromise::CreateAndReject(rv, __func__);
}
return mozilla::net::NeckoParent::CreateRemoteStreamForResolvedURI(
aChildURI, resolvedSpec, "image/jpeg"_ns);
}
bool MozNewTabWallpaperProtocolHandler::ResolveSpecialCases(
const nsACString& aHost, const nsACString& aPath,
const nsACString& aPathname, nsACString& aResult) {
if (aHost.IsEmpty()) {
return false;
}
if (IsNeckoChild()) {
// Child process: return placeholder file:// URI for
// SubstitutingProtocolHandler. SubstituteChannel will replace with a remote
// channel that proxies the load to the parent process.
aResult.Assign("file://");
aResult.Append(aHost);
return true;
} else {
// Parent process: resolve to profile/wallpaper/{host} directory.
nsCOMPtr<nsIFile> file;
nsresult rv = NS_GetSpecialDirectory(NS_APP_USER_PROFILE_50_DIR,
getter_AddRefs(file));
if (NS_FAILED(rv)) {
return false;
}
rv = file->AppendNative("wallpaper"_ns);
if (NS_FAILED(rv)) {
return false;
}
rv = file->AppendNative(nsCString(aHost));
if (NS_FAILED(rv)) {
return false;
}
nsCOMPtr<nsIURI> uri;
rv = NS_NewFileURI(getter_AddRefs(uri), file);
if (NS_FAILED(rv)) {
return false;
}
return NS_SUCCEEDED(uri->GetSpec(aResult));
}
}
nsresult MozNewTabWallpaperProtocolHandler::SubstituteChannel(
nsIURI* aURI, nsILoadInfo* aLoadInfo, nsIChannel** aRetVal) {
// Check if URI resolves to a file URI.
nsAutoCString resolvedSpec;
MOZ_TRY(ResolveURI(aURI, resolvedSpec));
nsAutoCString scheme;
MOZ_TRY(net_ExtractURLScheme(resolvedSpec, scheme));
if (!scheme.EqualsLiteral("file")) {
NS_WARNING("moz-newtab-wallpaper URIs should only resolve to file URIs.");
return NS_ERROR_NO_INTERFACE;
}
if (IsNeckoChild()) {
MOZ_TRY(SubstituteRemoteChannel(aURI, aLoadInfo, aRetVal));
}
return NS_OK;
}
Result<Ok, nsresult> MozNewTabWallpaperProtocolHandler::SubstituteRemoteChannel(
nsIURI* aURI, nsILoadInfo* aLoadInfo, nsIChannel** aRetVal) {
MOZ_ASSERT(IsNeckoChild());
MOZ_TRY(aURI ? NS_OK : NS_ERROR_INVALID_ARG);
MOZ_TRY(aLoadInfo ? NS_OK : NS_ERROR_INVALID_ARG);
#ifdef DEBUG
nsAutoCString resolvedSpec;
MOZ_TRY(ResolveURI(aURI, resolvedSpec));
nsAutoCString scheme;
MOZ_TRY(net_ExtractURLScheme(resolvedSpec, scheme));
MOZ_ASSERT(scheme.EqualsLiteral("file"));
#endif /* DEBUG */
RefPtr<RemoteStreamGetter> streamGetter =
new RemoteStreamGetter(aURI, aLoadInfo);
NewSimpleChannel(aURI, aLoadInfo, streamGetter, aRetVal);
return Ok();
}
// static
void MozNewTabWallpaperProtocolHandler::NewSimpleChannel(
nsIURI* aURI, nsILoadInfo* aLoadinfo, RemoteStreamGetter* aStreamGetter,
nsIChannel** aRetVal) {
nsCOMPtr<nsIChannel> channel = NS_NewSimpleChannel(
aURI, aLoadinfo, aStreamGetter,
[](nsIStreamListener* listener, nsIChannel* simpleChannel,
RemoteStreamGetter* getter) -> RequestOrReason {
return getter->GetAsync(listener, simpleChannel,
&NeckoChild::SendGetMozNewTabWallpaperStream);
});
channel.swap(*aRetVal);
}
} // namespace net
} // namespace mozilla
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