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/*****************************************************************************/
/* pemagination: a (virtual) tour into portable bits and executable bytes */
/* Copyright (C) 2013--2020 SysDeer Technologies, LLC */
/* 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"
void * pe_get_first_module_handle(void)
{
struct pe_peb_ldr_data * peb_ldr_data;
struct pe_list_entry * peb_list_entry;
intptr_t peb_tbl_addr;
struct pe_ldr_tbl_entry * peb_ldr_tbl_entry;
peb_ldr_data = (struct pe_peb_ldr_data *)pe_get_peb_ldr_data_address();
peb_list_entry = (struct pe_list_entry *)peb_ldr_data->in_load_order_module_list.flink;
peb_tbl_addr = (intptr_t)peb_list_entry - IN_LOAD_ORDER_MODULE_LIST_OFFSET;
peb_ldr_tbl_entry = (struct pe_ldr_tbl_entry *)peb_tbl_addr;
return peb_ldr_tbl_entry->dll_base;
}
void * pe_get_module_handle(const wchar16_t * name)
{
wchar16_t * src;
wchar16_t * dst;
size_t match;
size_t len;
struct pe_peb_ldr_data * peb_ldr_data;
struct pe_list_entry * plist_head;
struct pe_list_entry * plist_current;
struct pe_ldr_tbl_entry * ldr_tbl_entry = 0;
peb_ldr_data = (struct pe_peb_ldr_data *)pe_get_peb_ldr_data_address();
plist_head = (struct pe_list_entry *)peb_ldr_data->in_load_order_module_list.flink;
plist_current = plist_head;
len = pe_impl_strlen_utf16(name);
do {
ldr_tbl_entry = (struct pe_ldr_tbl_entry *)plist_current - IN_LOAD_ORDER_MODULE_LIST_OFFSET;
if (ldr_tbl_entry->base_dll_name.strlen == len)
dst = (wchar16_t *)ldr_tbl_entry->base_dll_name.buffer;
else if (ldr_tbl_entry->full_dll_name.strlen == len)
dst = (wchar16_t *)ldr_tbl_entry->full_dll_name.buffer;
else
dst = (wchar16_t *)0;
if ((intptr_t)(dst)) {
src = (wchar16_t *)name;
match = 0;
while ((match < len)
&& ((pe_impl_utf16_char_to_lower(*src))
== (pe_impl_utf16_char_to_lower(*dst)))) {
src = (wchar16_t *)pe_va_from_rva(src,sizeof(wchar16_t));
dst = (wchar16_t *)pe_va_from_rva(dst,sizeof(wchar16_t));
match+=sizeof(wchar16_t);
}
if (match == len)
return ldr_tbl_entry->dll_base;
}
plist_current = plist_current->flink;
} while (plist_current != plist_head);
return 0;
}
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