Add m-esr52 at 52.6.0

1 files changed, 83 insertions, 0 deletions

diff --git a/security/sandbox/win/src/sandboxtarget/sandboxTarget.h b/security/sandbox/win/src/sandboxtarget/sandboxTarget.h
new file mode 100644
index 000000000..f46a2ce70
--- /dev/null
+++ b/security/sandbox/win/src/sandboxtarget/sandboxTarget.h
@@ -0,0 +1,83 @@
+/* -*- 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/. */
+
+#ifndef __SECURITY_SANDBOX_SANDBOXTARGET_H__
+#define __SECURITY_SANDBOX_SANDBOXTARGET_H__
+
+#include <windows.h>
+
+#include "mozilla/Assertions.h"
+#include "base/MissingBasicTypes.h"
+#include "sandbox/win/src/sandbox.h"
+
+namespace mozilla {
+
+class SandboxTarget
+{
+public:
+  /**
+   * Obtains a pointer to the singleton instance
+   */
+  static SandboxTarget* Instance();
+
+  /**
+   * Used by the application to pass in the target services that provide certain
+   * functions to the sandboxed code.
+   * The target services must already be initialized.
+   *
+   * @param aTargetServices The target services that will be used
+   */
+  void SetTargetServices(sandbox::TargetServices* aTargetServices)
+  {
+    MOZ_ASSERT(aTargetServices);
+    MOZ_ASSERT(!mTargetServices,
+               "Sandbox TargetServices must only be set once.");
+
+    mTargetServices = aTargetServices;
+  }
+
+  /**
+   * Called by the library that wants to "start" the sandbox, i.e. change to the
+   * more secure delayed / lockdown policy.
+   */
+  void StartSandbox()
+  {
+    if (mTargetServices) {
+      mTargetServices->LowerToken();
+    }
+  }
+
+  /**
+   * Used to duplicate handles via the broker process. The permission for the
+   * handle type and target process has to have been set on the sandbox policy.
+   */
+  bool BrokerDuplicateHandle(HANDLE aSourceHandle, DWORD aTargetProcessId,
+                             HANDLE* aTargetHandle, DWORD aDesiredAccess,
+                             DWORD aOptions)
+  {
+    if (!mTargetServices) {
+      return false;
+    }
+
+    sandbox::ResultCode result =
+      mTargetServices->DuplicateHandle(aSourceHandle, aTargetProcessId,
+                                       aTargetHandle, aDesiredAccess, aOptions);
+    return (sandbox::SBOX_ALL_OK == result);
+  }
+
+protected:
+  SandboxTarget() :
+    mTargetServices(nullptr)
+  {
+  }
+
+  sandbox::TargetServices* mTargetServices;
+};
+
+
+} // mozilla
+
+#endif