106 lines
3.6 KiB
C++
106 lines
3.6 KiB
C++
/*************************************************************************/
|
|
/* Copyright (c) 2015 dx, http://kaimi.ru */
|
|
/* */
|
|
/* Permission is hereby granted, free of charge, to any person */
|
|
/* obtaining a copy of this software and associated documentation */
|
|
/* files (the "Software"), to deal in the Software without */
|
|
/* restriction, including without limitation the rights to use, */
|
|
/* copy, modify, merge, publish, distribute, sublicense, and/or */
|
|
/* sell copies of the Software, and to permit persons to whom the */
|
|
/* Software is furnished to do so, subject to the following conditions: */
|
|
/* The above copyright notice and this permission notice shall be */
|
|
/* included in all copies or substantial portions of the Software. */
|
|
/* */
|
|
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
|
|
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
|
|
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
|
|
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
|
|
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
|
|
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
|
|
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
/*************************************************************************/
|
|
#pragma once
|
|
#include <istream>
|
|
#include <string>
|
|
#include "stdint_defs.h"
|
|
#include "pe_structures.h"
|
|
|
|
namespace pe_bliss
|
|
{
|
|
class pe_utils
|
|
{
|
|
public:
|
|
//Returns true if string "data" with maximum length "raw_length" is null-terminated
|
|
template<typename T>
|
|
static bool is_null_terminated(const T* data, size_t raw_length)
|
|
{
|
|
raw_length /= sizeof(T);
|
|
for(size_t l = 0; l < raw_length; l++)
|
|
{
|
|
if(data[l] == static_cast<T>(L'\0'))
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
//Helper template function to strip nullbytes in the end of string
|
|
template<typename T>
|
|
static void strip_nullbytes(std::basic_string<T>& str)
|
|
{
|
|
while(!*(str.end() - 1) && !str.empty())
|
|
str.erase(str.length() - 1);
|
|
}
|
|
|
|
//Helper function to determine if number is power of 2
|
|
template<typename T>
|
|
static inline bool is_power_of_2(T x)
|
|
{
|
|
return !(x & (x - 1));
|
|
}
|
|
|
|
//Helper function to align number down
|
|
template<typename T>
|
|
static inline T align_down(T x, uint32_t align)
|
|
{
|
|
return x & ~(static_cast<T>(align) - 1);
|
|
}
|
|
|
|
//Helper function to align number up
|
|
template<typename T>
|
|
static inline T align_up(T x, uint32_t align)
|
|
{
|
|
return (x & static_cast<T>(align - 1)) ? align_down(x, align) + static_cast<T>(align) : x;
|
|
}
|
|
|
|
//Returns true if sum of two unsigned integers is safe (no overflow occurs)
|
|
static inline bool is_sum_safe(uint32_t a, uint32_t b)
|
|
{
|
|
return a <= static_cast<uint32_t>(-1) - b;
|
|
}
|
|
|
|
//Two gigabytes value in bytes
|
|
static const uint32_t two_gb = 0x80000000;
|
|
static const uint32_t max_dword = 0xFFFFFFFF;
|
|
static const uint32_t max_word = 0x0000FFFF;
|
|
static const double log_2; //instead of using M_LOG2E
|
|
|
|
//Returns stream size
|
|
static std::streamoff get_file_size(std::istream& file);
|
|
|
|
#ifndef PE_BLISS_WINDOWS
|
|
public:
|
|
static const u16string to_ucs2(const std::wstring& str);
|
|
static const std::wstring from_ucs2(const u16string& str);
|
|
#endif
|
|
|
|
private:
|
|
pe_utils();
|
|
pe_utils(pe_utils&);
|
|
pe_utils& operator=(const pe_utils&);
|
|
};
|
|
|
|
//Windows GUID comparison
|
|
bool operator==(const pe_win::guid& guid1, const pe_win::guid& guid2);
|
|
}
|