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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 "ContentProcess.h"
#include "mozilla/Preferences.h"
#if defined(XP_MACOSX) && defined(MOZ_SANDBOX)
# include <stdlib.h>
# include "mozilla/Sandbox.h"
# include "mozilla/SandboxSettings.h"
#endif
#include "mozilla/GeckoArgs.h"
#include "mozilla/Omnijar.h"
#include "mozilla/ipc/BackgroundChild.h"
#include "mozilla/ipc/ProcessUtils.h"
#include "nsAppRunner.h"
#include "nsCategoryManagerUtils.h"
namespace mozilla::dom {
static nsresult GetGREDir(nsIFile** aResult) {
nsCOMPtr<nsIFile> current;
nsresult rv = XRE_GetBinaryPath(getter_AddRefs(current));
NS_ENSURE_SUCCESS(rv, rv);
#if defined(XP_MACOSX)
// Walk out of [subprocess].app/Contents/MacOS to the real GRE dir
const int depth = 4;
#elif defined(XP_IOS)
// Walk out of Extensions/[subprocess].appex to the real GRE dir
const int depth = 3;
#else
const int depth = 1;
#endif
for (int i = 0; i < depth; ++i) {
nsCOMPtr<nsIFile> parent;
rv = current->GetParent(getter_AddRefs(parent));
NS_ENSURE_SUCCESS(rv, rv);
current = parent;
NS_ENSURE_TRUE(current, NS_ERROR_UNEXPECTED);
}
#if defined(XP_MACOSX)
rv = current->SetNativeLeafName("Resources"_ns);
NS_ENSURE_SUCCESS(rv, rv);
#elif defined(XP_IOS)
// FIXME: Consider looking up the GeckoView.framework bundle directly, rather
// than deriving it from XRE_GetBinaryPath on iOS. This may be more resilient
// especially once we properly bundle XUL into a separate framework or support
// multiple embedders.
rv = current->AppendNative("Frameworks"_ns);
NS_ENSURE_SUCCESS(rv, rv);
rv = current->AppendNative("GeckoView.framework"_ns);
NS_ENSURE_SUCCESS(rv, rv);
rv = current->AppendNative("Frameworks"_ns);
NS_ENSURE_SUCCESS(rv, rv);
#endif
current.forget(aResult);
return NS_OK;
}
ContentProcess::ContentProcess(IPC::Channel::ChannelHandle aClientChannel,
ProcessId aParentPid,
const nsID& aMessageChannelId)
: ProcessChild(std::move(aClientChannel), aParentPid, aMessageChannelId) {
NS_LogInit();
}
ContentProcess::~ContentProcess() { NS_LogTerm(); }
bool ContentProcess::Init(int aArgc, char* aArgv[]) {
InfallibleInit(aArgc, aArgv);
return true;
}
void ContentProcess::InfallibleInit(int aArgc, char* aArgv[]) {
Maybe<bool> isForBrowser = Nothing();
Maybe<const char*> parentBuildID =
geckoargs::sParentBuildID.Get(aArgc, aArgv);
// command line: -jsInitHandle handle
Maybe<mozilla::ipc::ReadOnlySharedMemoryHandle> jsInitHandle =
geckoargs::sJsInitHandle.Get(aArgc, aArgv);
nsCOMPtr<nsIFile> appDirArg;
Maybe<const char*> appDir = geckoargs::sAppDir.Get(aArgc, aArgv);
if (appDir.isSome()) {
bool flag;
nsresult rv = XRE_GetFileFromPath(*appDir, getter_AddRefs(appDirArg));
if (NS_FAILED(rv) || NS_FAILED(appDirArg->Exists(&flag)) || !flag) {
NS_WARNING("Invalid application directory passed to content process.");
appDirArg = nullptr;
}
}
Maybe<bool> safeMode = geckoargs::sSafeMode.Get(aArgc, aArgv);
if (safeMode.isSome()) {
gSafeMode = *safeMode;
}
Maybe<bool> isForBrowerParam = geckoargs::sIsForBrowser.Get(aArgc, aArgv);
Maybe<bool> notForBrowserParam = geckoargs::sNotForBrowser.Get(aArgc, aArgv);
if (isForBrowerParam.isSome()) {
isForBrowser = Some(true);
}
if (notForBrowserParam.isSome()) {
isForBrowser = Some(false);
}
#if defined(XP_MACOSX) && defined(MOZ_SANDBOX)
nsCOMPtr<nsIFile> profileDir;
bool flag;
Maybe<const char*> profile = geckoargs::sProfile.Get(aArgc, aArgv);
// xpcshell self-test on macOS will hit this, so check isSome() otherwise
// Maybe<> assertions will MOZ_CRASH() us.
if (profile.isSome()) {
nsresult rv = XRE_GetFileFromPath(*profile, getter_AddRefs(profileDir));
if (NS_FAILED(rv) || NS_FAILED(profileDir->Exists(&flag)) || !flag) {
NS_WARNING("Invalid profile directory passed to content process.");
profileDir = nullptr;
}
} else {
NS_WARNING("No profile directory passed to content process.");
}
#endif /* XP_MACOSX && MOZ_SANDBOX */
// Did we find all the mandatory flags?
if (isForBrowser.isNothing()) {
MOZ_CRASH("isForBrowser flag missing");
}
if (parentBuildID.isNothing()) {
MOZ_CRASH("parentBuildID flag missing");
}
if (!ProcessChild::InitPrefs(aArgc, aArgv)) {
MOZ_CRASH("InitPrefs failed");
}
if (jsInitHandle &&
!::mozilla::ipc::ImportSharedJSInit(jsInitHandle.extract())) {
MOZ_CRASH("ImportSharedJSInit failed");
}
mContent.Init(TakeInitialEndpoint(), *parentBuildID, *isForBrowser);
nsCOMPtr<nsIFile> greDir;
nsresult rv = GetGREDir(getter_AddRefs(greDir));
if (NS_FAILED(rv)) {
MOZ_CRASH("GetGREDir failed");
}
nsCOMPtr<nsIFile> xpcomAppDir = appDirArg ? appDirArg : greDir;
rv = mDirProvider.Initialize(xpcomAppDir, greDir);
if (NS_FAILED(rv)) {
MOZ_CRASH("mDirProvider.Initialize failed");
}
// Handle the -greomni/-appomni flags (unless the forkserver already
// preloaded the jar(s)).
if (!Omnijar::IsInitialized()) {
Omnijar::ChildProcessInit(aArgc, aArgv);
}
rv = NS_InitXPCOM(nullptr, xpcomAppDir, &mDirProvider);
if (NS_FAILED(rv)) {
MOZ_CRASH("NS_InitXPCOM failed");
}
// "app-startup" is the name of both the category and the event
NS_CreateServicesFromCategory("app-startup", nullptr, "app-startup", nullptr);
#if (defined(XP_MACOSX)) && defined(MOZ_SANDBOX)
mContent.SetProfileDir(profileDir);
# if defined(DEBUG)
if (IsContentSandboxEnabled()) {
AssertMacSandboxEnabled();
}
# endif /* DEBUG */
#endif /* XP_MACOSX && MOZ_SANDBOX */
// Do this as early as possible to get the parent process to initialize the
// background thread since we'll likely need database information very soon.
mozilla::ipc::BackgroundChild::Startup();
mozilla::ipc::BackgroundChild::InitContentStarter(&mContent);
}
// Note: CleanUp() never gets called in non-debug builds because we exit early
// in ContentChild::ActorDestroy().
void ContentProcess::CleanUp() {
mDirProvider.DoShutdown();
NS_ShutdownXPCOM(nullptr);
}
} // namespace mozilla::dom
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