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

/*  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/nt_file.h>

#include <ntapi/nt_string.h>

#include <ntapi/nt_tty.h>

#include <ntapi/ntapi.h>

#include "ntapi_impl.h"

int32_t __stdcall	__ntapi_ipc_create_pipe_v2(

	__out		void **			hpipe_read,

	__out		void **			hpipe_write,

	__in		uint32_t		advisory_buffer_size)

{

	int32_t			status;

	void *			hdevpipes;

	void *			hwrite;

	void *			hread;

	nt_object_attributes	oa;

	nt_io_status_block	iosb;

	nt_sqos			sqos;

	nt_unicode_string	nt_name;

	nt_timeout		timeout;

	const wchar16_t pipe_dir[] =  {

		'\\','D','e','v','i','c','e',

		'\\','N','a','m','e','d','P','i','p','e','\\',0

	};

	/* nt_name: pipe device directory */

	nt_name.strlen = (uint16_t)(sizeof(pipe_dir) - sizeof(wchar16_t));

	nt_name.maxlen = 0;

	nt_name.buffer = (uint16_t *)pipe_dir;

	/* init security structure */

	sqos.length 			= sizeof(sqos);

	sqos.impersonation_level	= NT_SECURITY_ANONYMOUS;

	sqos.context_tracking_mode	= NT_SECURITY_TRACKING_STATIC;

	sqos.effective_only		= 1;

	/* oa */

	oa.len		= sizeof(oa);

	oa.root_dir	= (void *)0;

	oa.obj_name	= &nt_name;

	oa.obj_attr	= NT_OBJ_CASE_INSENSITIVE | NT_OBJ_INHERIT;

	oa.sec_desc	= (nt_security_descriptor *)0;

	oa.sec_qos	= &sqo;;

	if ((status = __ntapi->zw_open_file(

			&hdevpipes,

			NT_GENERIC_READ | NT_SEC_SYNCHRONIZE,

			&oa,

			&iosb,

			NT_FILE_SHARE_READ | NT_FILE_SHARE_WRITE,

			NT_FILE_DIRECTORY_FILE)))

		return status;

	timeout.ihigh = 0xffffffff;

	timeout.ulow  = 0x0;

	oa.root_dir = hdevpipes;

	nt_name.strlen = 0;

	nt_name.buffer = 0;

	status = __ntapi->zw_create_named_pipe_file(

		&hread,

		NT_GENERIC_READ | NT_SEC_SYNCHRONIZE | NT_FILE_WRITE_ATTRIBUTES,

		&oa,

		&iosb,

		NT_FILE_SHARE_READ | NT_FILE_SHARE_WRITE,

		NT_FILE_CREATE,

		NT_FILE_ASYNCHRONOUS_IO,

		NT_FILE_PIPE_BYTE_STREAM_TYPE,

		NT_FILE_PIPE_BYTE_STREAM_MODE,

		NT_FILE_PIPE_QUEUE_OPERATION,

		1,

		advisory_buffer_size,

		advisory_buffer_size,

		&timeout);

	__ntapi->zw_close(

		hdevpipes);

	if (status)

		return status;

	/* the pipe is now our root directory */

	oa.root_dir = hread;

	status = __ntapi->zw_open_file(

		&hwrite,

		NT_GENERIC_WRITE | NT_SEC_SYNCHRONIZE | NT_FILE_READ_ATTRIBUTES,

		&oa,

		&iosb,

		NT_FILE_SHARE_READ | NT_FILE_SHARE_WRITE,

		NT_FILE_WRITE_THROUGH | NT_FILE_SYNCHRONOUS_IO_ALERT | NT_FILE_NON_DIRECTORY_FILE);

	if (status) {

		__ntapi->zw_close(hread);

		return status;

	}

	*hpipe_read  = hread;

	*hpipe_write = hwrite;

	return status;

}