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

/*  ntapi: Native API core library                      */

/*  Copyright (C) 2013--2021  SysDeer Technologies, LLC */

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

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

#include <psxtypes/psxtypes.h>

#include <ntapi/ntapi.h>

#include "ntapi_impl.h"

static int32_t __ntapi_tt_open_utf8(

	void **		hfile,

	void *		hat,

	const char *	arg,

	uint32_t	options,

	int		fprivate,

	wchar16_t *	buffer,

	uint32_t	buflen)

{

	int32_t						status;

	nt_oa						oa;

	nt_iosb						iosb;

	nt_unicode_string				path;

	nt_unicode_conversion_params_utf8_to_utf16	params = {0,0,0,0,0,0,0,0,0};

	wchar16_t *					wch;

	size_t						nbytes;

	/* utf-8 --> utf-16 */

	params.src		 = (const unsigned char *)arg;

	params.src_size_in_bytes = __ntapi->tt_string_null_offset_multibyte(arg);

	params.dst		 = buffer;

	params.dst_size_in_bytes = buflen;

	if ((status = __ntapi->uc_convert_unicode_stream_utf8_to_utf16(&params)))

		return status;

	/* convenience */

	for (wch=buffer, nbytes=params.bytes_written; nbytes; ) {

		if (*wch == '/')

			*wch = '\\';

		nbytes -= sizeof(wchar16_t);

		wch++;

	}

	/* path */

	path.maxlen = 0;

	path.strlen = (uint16_t)params.bytes_written;

	path.buffer = buffer;

	/* oa */

	oa.len      = sizeof(nt_oa);

	oa.root_dir = (buffer[0]=='\\') ? 0 : hat;

	oa.obj_name = &pat;;

	oa.obj_attr = fprivate ? 0 : NT_OBJ_INHERIT;

	oa.sec_desc = 0;

	oa.sec_qos  = 0;

	/* open */

	return __ntapi->zw_open_file(

		hfile,

		NT_SEC_SYNCHRONIZE | NT_FILE_READ_ATTRIBUTES | NT_FILE_READ_DATA,

		&oa,&iosb,

		NT_FILE_SHARE_READ | NT_FILE_SHARE_WRITE | NT_FILE_SHARE_DELETE,

		options | NT_FILE_SYNCHRONOUS_IO_ALERT);

}

int32_t __ntapi_tt_open_file_utf8(

	void **		hfile,

	void *		hat,

	const char *	arg,

	int		fprivate,

	wchar16_t *	buffer,

	uint32_t	buflen)

{

	return __ntapi_tt_open_utf8(

		hfile,hat,arg,

		NT_FILE_NON_DIRECTORY_FILE,

		fprivate,buffer,buflen);

}

int32_t __ntapi_tt_open_dir_utf8(

	void **		hfile,

	void *		hat,

	const char *	arg,

	int		fprivate,

	wchar16_t *	buffer,

	uint32_t	buflen)

{

	return __ntapi_tt_open_utf8(

		hfile,hat,arg,

		NT_FILE_DIRECTORY_FILE,

		fprivate,buffer,buflen);

}