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      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_
     77