buffer_util.h

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#pragma once
 
#include <windows.h>
 
#define MAX_DWORD 0xffffffff
#define MAX_WORD 0xffff
#define MASK_TO_DWORD(val) ((val < MAX_DWORD) ? (val & MAX_DWORD) : MAX_DWORD)
#define MASK_TO_WORD(val) ((val < MAX_WORD) ? (val & MAX_WORD) : MAX_WORD)
 
namespace peconv {
 
    bool validate_ptr(
        IN const void* buffer_bgn, 
        IN size_t buffer_size,
        IN const void* field_bgn,
        IN size_t field_size
    );
 
//-----------------------------------------------------------------------------------
//
// supported buffers:
//
    typedef PBYTE UNALIGNED_BUF;
 
    typedef PBYTE ALIGNED_BUF;
 
//
// alloc/free unaligned buffers:
//
    UNALIGNED_BUF alloc_unaligned(size_t buf_size);
 
    //
    void free_unaligned(UNALIGNED_BUF section_buffer);
 
//
// alloc/free aligned buffers:
//
 
    ALIGNED_BUF alloc_aligned(size_t buffer_size, DWORD protect, ULONGLONG desired_base=NULL);
 
    bool free_aligned(ALIGNED_BUF buffer, size_t buffer_size=0);
 
    //PE buffers (wrappers)
 
    ALIGNED_BUF alloc_pe_buffer(size_t buffer_size, DWORD protect, ULONGLONG desired_base=NULL);
 
    bool free_pe_buffer(ALIGNED_BUF buffer, size_t buffer_size=0);
 
}; //namespace peconv