ipc/glue/LibrarySandboxPreload.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "LibrarySandboxPreload.h"
   8 #include "nsXPCOMPrivate.h"  // for XPCOM_DLL
   9
  10 #include "BinaryPath.h"
  11 #include "prlink.h"
  12
  13 namespace mozilla {
  14 namespace ipc {
  15
  16 PathString GetSandboxedRLBoxPath() {
  17   nsCOMPtr<nsIFile> libFile;
  18   nsresult rv = mozilla::BinaryPath::GetFile(getter_AddRefs(libFile));
  19   if (NS_FAILED(rv)) {
  20     MOZ_CRASH("Library preload failure: Failed to get binary file\n");
  21   }
  22
  23   rv = libFile->SetNativeLeafName(XPCOM_DLL ""_ns);
  24   if (NS_FAILED(rv)) {
  25     MOZ_CRASH("Library preload failure: Failed to get library file\n");
  26   }
  27
  28   return libFile->NativePath();
  29 }
  30
  31 PRLibrary* PreloadLibrary(const PathString& path) {
  32   PRLibSpec libSpec;
  33 #ifdef XP_WIN
  34   libSpec.type = PR_LibSpec_PathnameU;
  35   libSpec.value.pathname_u = path.get();
  36 #else
  37   libSpec.type = PR_LibSpec_Pathname;
  38   libSpec.value.pathname = path.get();
  39 #endif
  40   PRLibrary* ret = PR_LoadLibraryWithFlags(libSpec, PR_LD_LAZY);
  41   return ret;
  42 }
  43
  44 }  // namespace ipc
  45 }  // namespace mozilla