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Diffstat (limited to 'tools/pe_bliss/utils.h')
-rw-r--r-- | tools/pe_bliss/utils.h | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/tools/pe_bliss/utils.h b/tools/pe_bliss/utils.h new file mode 100644 index 0000000000..29125f8dc1 --- /dev/null +++ b/tools/pe_bliss/utils.h @@ -0,0 +1,105 @@ +/*************************************************************************/ +/* 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); +} |