1 files changed, 192 insertions, 0 deletions
diff --git a/dom/ipc/ContentProcess.cpp b/dom/ipc/ContentProcess.cpp
new file mode 100644
index 0000000000..10118cd38f
--- /dev/null
+++ b/dom/ipc/ContentProcess.cpp
@@ -0,0 +1,192 @@
+/* -*- 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 "mozilla/ipc/IOThreadChild.h"
+
+#include "ContentProcess.h"
+#include "base/shared_memory.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 "nsAppRunner.h"
+#include "mozilla/ipc/BackgroundChild.h"
+#include "mozilla/ipc/ProcessUtils.h"
+#include "mozilla/GeckoArgs.h"
+#include "mozilla/Omnijar.h"
+#include "nsCategoryManagerUtils.h"
+
+using mozilla::ipc::IOThreadChild;
+
+namespace mozilla::dom {
+
+static nsresult GetGREDir(nsIFile** aResult) {
+  nsCOMPtr<nsIFile> current;
+  nsresult rv = XRE_GetBinaryPath(getter_AddRefs(current));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+#ifdef XP_DARWIN
+  // Walk out of [subprocess].app/Contents/MacOS to the real GRE dir
+  const int depth = 4;
+#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);
+  }
+
+#ifdef XP_DARWIN
+  rv = current->SetNativeLeafName("Resources"_ns);
+  NS_ENSURE_SUCCESS(rv, rv);
+#endif
+
+  current.forget(aResult);
+
+  return NS_OK;
+}
+
+ContentProcess::ContentProcess(ProcessId aParentPid,
+                               const nsID& aMessageChannelId)
+    : ProcessChild(aParentPid, aMessageChannelId) {
+  NS_LogInit();
+}
+
+ContentProcess::~ContentProcess() { NS_LogTerm(); }
+
+bool ContentProcess::Init(int aArgc, char* aArgv[]) {
+  Maybe<uint64_t> childID = geckoargs::sChildID.Get(aArgc, aArgv);
+  Maybe<bool> isForBrowser = Nothing();
+  Maybe<const char*> parentBuildID =
+      geckoargs::sParentBuildID.Get(aArgc, aArgv);
+  Maybe<uint64_t> jsInitHandle;
+  Maybe<uint64_t> jsInitLen = geckoargs::sJsInitLen.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);
+  }
+
+  // command line: [-jsInitHandle handle] -jsInitLen length
+#ifdef XP_WIN
+  jsInitHandle = geckoargs::sJsInitHandle.Get(aArgc, aArgv);
+#endif
+
+#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 (childID.isNothing() || isForBrowser.isNothing() ||
+      parentBuildID.isNothing()) {
+    return false;
+  }
+
+  if (!ProcessChild::InitPrefs(aArgc, aArgv)) {
+    return false;
+  }
+
+  if (!::mozilla::ipc::ImportSharedJSInit(jsInitHandle.valueOr(0),
+                                          jsInitLen.valueOr(0))) {
+    return false;
+  }
+
+  mContent.Init(TakeInitialEndpoint(), *parentBuildID, *childID, *isForBrowser);
+
+  nsCOMPtr<nsIFile> greDir;
+  nsresult rv = GetGREDir(getter_AddRefs(greDir));
+  if (NS_FAILED(rv)) {
+    return false;
+  }
+
+  nsCOMPtr<nsIFile> xpcomAppDir = appDirArg ? appDirArg : greDir;
+
+  rv = mDirProvider.Initialize(xpcomAppDir, greDir);
+  if (NS_FAILED(rv)) {
+    return false;
+  }
+
+  // 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)) {
+    return false;
+  }
+
+  // "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);
+
+  return true;
+}
+
+// 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