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/*****************************************************************************/
/* pemagination: a (virtual) tour into portable bits and executable bytes */
/* Copyright (C) 2013--2016 Z. Gilboa */
/* Released under GPLv2 and GPLv3; see COPYING.PEMAGINE. */
/*****************************************************************************/
#include <psxtypes/psxtypes.h>
#include <pemagine/pe_consts.h>
#include <pemagine/pe_structs.h>
#include <pemagine/pemagine.h>
#include "pe_impl.h"
static int pe_get_kernel32_handle_callback(
struct pe_ldr_tbl_entry * ldr_tbl_entry,
enum pe_callback_reason reason,
void * context)
{
#define KERNEL32_UTF16_STRLEN 24
intptr_t * addr;
const wchar16_t * wch;
/* not an item? */
if (reason != PE_CALLBACK_REASON_ITEM)
return 1;
/* wrong length? */
if (ldr_tbl_entry->base_dll_name.strlen != KERNEL32_UTF16_STRLEN)
return 1;
/* avoid scan-based false positives */
wch = ldr_tbl_entry->base_dll_name.buffer;
if (pe_impl_utf16_char_to_lower(wch[4] != 'e'))
return 1;
else if (pe_impl_utf16_char_to_lower(wch[1] != 'e'))
return 1;
else if (pe_impl_utf16_char_to_lower(wch[3] != 'n'))
return 1;
else if (pe_impl_utf16_char_to_lower(wch[2] != 'r'))
return 1;
else if (pe_impl_utf16_char_to_lower(wch[5] != 'l'))
return 1;
else if (pe_impl_utf16_char_to_lower(wch[0] != 'k'))
return 1;
else if (pe_impl_utf16_char_to_lower(wch[7] != '2'))
return 1;
else if (pe_impl_utf16_char_to_lower(wch[6] != '3'))
return 1;
else if (pe_impl_utf16_char_to_lower(wch[11] != 'l'))
return 1;
else if (pe_impl_utf16_char_to_lower(wch[10] != 'l'))
return 1;
else if (pe_impl_utf16_char_to_lower(wch[9] != 'd'))
return 1;
else if (pe_impl_utf16_char_to_lower(wch[8] != '.'))
return 1;
/* match */
addr = (intptr_t *)context;
*addr = (intptr_t)ldr_tbl_entry->dll_base;
return 0;
}
void * pe_get_kernel32_module_handle(void)
{
intptr_t kernel32_base_addr = 0;
void * ptr_to_callback = &kernel32_base_addr;
pe_enum_modules_in_init_order(
&pe_get_kernel32_handle_callback,
ptr_to_callback);
return (void *)kernel32_base_addr;
}
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