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

/*  pemagination: a (virtual) tour into portable bits and executable bytes   */

/*  Copyright (C) 2013,2014,2015  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"

pe_api

struct pe_sec_hdr * pe_get_image_section_tbl_addr (const void * base)

{

	struct pe_raw_coff_file_hdr *	coff;

	union  pe_raw_opt_hdr *		opt;

	if (!(coff = pe_get_image_coff_hdr_addr(base)))

		return 0;

	if (!(opt = pe_get_image_opt_hdr_addr(base)))

		return 0;

	return (struct pe_sec_hdr *)((char *)opt  + *(uint16_t *)coff->size_of_opt_hdr);

}

pe_api

struct pe_sec_hdr * pe_get_image_named_section_addr (const void * base, const char * name)

{

	uint16_t		count;

	struct pe_sec_hdr *	hdr;

	struct pe_raw_coff_file_hdr*coff;

	char *			ch;

	uint32_t		len;

	uint32_t		pos;

	uint64_t		sname = 0;

	if (!(hdr = pe_get_image_section_tbl_addr(base)))

		return 0;

	coff  = pe_get_image_coff_hdr_addr(base);

	count = *(uint16_t *)coff->num_of_sections;

	if ((len = pe_impl_strlen_ansi(name)) > 8) {

		/* todo: long name support */

		return 0;

	} else {

		for (pos=0, ch=(char *)&sname; pos

			ch[pos] = name[pos];

		for (; count; hdr++,count--)

			if (*(uint64_t *)hdr->name == sname)

				return hdr;

	}

	return 0;

}