/***************************************************************/

/*  perk: PE Resource Kit                                      */

/*  Copyright (C) 2015--2021  SysDeer Technologies, LLC        */

/*  Released under GPLv2 and GPLv3; see COPYING.PERK.          */

/***************************************************************/

#include <string.h>

#include <perk/perk.h>

#include <perk/perk_consts.h>

#include <perk/perk_structs.h>

#include "perk_endian_impl.h"

#include "perk_reader_impl.h"

int pe_read_import_header(const struct pe_raw_import_hdr * p, struct pe_meta_import_hdr * m)

{

	m->ih_import_lookup_tbl_rva = pe_read_long(p->ih_import_lookup_tbl_rva);

	m->ih_time_date_stamp       = pe_read_long(p->ih_time_date_stamp);

	m->ih_forwarder_chain       = pe_read_long(p->ih_forwarder_chain);

	m->ih_name_rva              = pe_read_long(p->ih_name_rva);

	m->ih_import_addr_tbl_rva   = pe_read_long(p->ih_import_addr_tbl_rva);

	m->ih_name   = 0;

	m->ih_aitems = 0;

	return 0;

}

int pe_read_import_lookup(

	const unsigned char * p,

	struct pe_meta_import_lookup * m,

	uint32_t magic)

{

	switch (magic) {

		case PE_MAGIC_PE32:

			m->u.ii_import_lookup_entry_64 = pe_read_long(p);

			m->ii_flag = (uint32_t)m->u.ii_import_lookup_entry_64 >> 31;

			break;

		case PE_MAGIC_PE32_PLUS:

			m->u.ii_import_lookup_entry_64 = pe_read_quad(p);

			m->ii_flag = m->u.ii_import_lookup_entry_64 >> 63;

			break;

		default:

			return PERK_ERR_BAD_IMAGE_TYPE;

	}

	if (m->ii_flag) {

		m->ii_ordinal           = m->u.ii_import_lookup_entry_32 & 0xffff;

		m->ii_hint_name_tbl_rva = 0;

	} else {

		m->ii_ordinal           = 0;

		m->ii_hint_name_tbl_rva = m->u.ii_import_lookup_entry_32 & 0x7fffffff;

	}

	m->ii_hint = 0;

	m->ii_name = 0;

	return 0;

}