sandbox/win/src/internal_types.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef SANDBOX_WIN_SRC_INTERNAL_TYPES_H_
   6 #define SANDBOX_WIN_SRC_INTERNAL_TYPES_H_
   7
   8 namespace sandbox {
   9
  10 const wchar_t kNtdllName[] = L"ntdll.dll";
  11 const wchar_t kKerneldllName[] = L"kernel32.dll";
  12 const wchar_t kKernelBasedllName[] = L"kernelbase.dll";
  13
  14 // Defines the supported C++ types encoding to numeric id. Like a poor's man
  15 // RTTI. Note that true C++ RTTI will not work because the types are not
  16 // polymorphic anyway.
  17 enum ArgType {
  18   INVALID_TYPE = 0,
  19   WCHAR_TYPE,
  20   ULONG_TYPE,
  21   UNISTR_TYPE,
  22   VOIDPTR_TYPE,
  23   INPTR_TYPE,
  24   INOUTPTR_TYPE,
  25   LAST_TYPE
  26 };
  27
  28 // Encapsulates a pointer to a buffer and the size of the buffer.
  29 class CountedBuffer {
  30  public:
  31   CountedBuffer(void* buffer, uint32 size) : size_(size), buffer_(buffer) {}
  32
  33   uint32 Size() const {
  34     return size_;
  35   }
  36
  37   void* Buffer() const {
  38     return buffer_;
  39   }
  40
  41  private:
  42   uint32 size_;
  43   void* buffer_;
  44 };
  45
  46 // Helper class to convert void-pointer packed ints for both
  47 // 32 and 64 bit builds. This construct is non-portable.
  48 class IPCInt {
  49  public:
  50   explicit IPCInt(void* buffer) {
  51     buffer_.vp = buffer;
  52   }
  53
  54   explicit IPCInt(unsigned __int32 i32) {
  55     buffer_.vp = NULL;
  56     buffer_.i32 = i32;
  57   }
  58
  59   unsigned __int32 As32Bit() const {
  60     return buffer_.i32;
  61   }
  62
  63   void* AsVoidPtr() const {
  64     return buffer_.vp;
  65   }
  66
  67  private:
  68   union U {
  69     void* vp;
  70     unsigned __int32 i32;
  71   } buffer_;
  72 };
  73
  74 }  // namespace sandbox
  75
  76 #endif  // SANDBOX_WIN_SRC_INTERNAL_TYPES_H_