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

/*  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_atomic.h>

#include <ntapi/ntapi.h>

#include "ntapi_impl.h"

typedef struct __attr_ptr_size_aligned__ _nt_tty_pipe_name {

	wchar16_t	pipe_dir[8];

	wchar16_t	back_slash;

	wchar16_t	key_1st[8];

	wchar16_t	uscore_1st;

	wchar16_t	key_2nd[8];

	wchar16_t	uscore_2nd;

	wchar16_t	key_3rd[8];

	wchar16_t	uscore_3rd;

	wchar16_t	key_4th[8];

	wchar16_t	uscore_4th;

	wchar16_t	key_5th[8];

	wchar16_t	uscore_5th;

	wchar16_t	key_6th[8];

	wchar16_t	null_termination;

	void *		pad;

} nt_tty_pipe_name;

int32_t __stdcall	__ntapi_ipc_create_pipe_v1(

	__out		void **			hpipe_read,

	__out		void **			hpipe_write,

	__in		uint32_t		advisory_buffer_size)

{

	int32_t			status;

	void *				hread;

	void *				hwrite;

	nt_object_attributes		oa;

	nt_io_status_block		iosb;

	nt_unicode_string		nt_name;

	nt_security_quality_of_service	sqos;

	nt_large_integer		timeout;

	intptr_t *			counter;

	nt_tty_pipe_name pipe_name =  {

		{'\\','?','?','\\','p','i','p','e'},

		'\\',

		{0},'_',

		{0},'_',

		{0},'_',

		{0},'_',

		{0},'_',

		{0},

		0,0

	};

	(void)advisory_buffer_size;

	/* pipe_count  */

	counter = (intptr_t *)&__ntapi_internals()->v1_pipe_counter;

	at_locked_inc(counter);

	/* get system time */

	status = __ntapi->zw_query_system_time(&timeout);

	if (status != NT_STATUS_SUCCESS)

		return status;

	/* pipe name (no anonymous pipe prior to vista) */

	__ntapi->tt_uint32_to_hex_utf16(	pe_get_current_process_id(),pipe_name.key_1st);

	__ntapi->tt_uint32_to_hex_utf16(	pe_get_current_thread_id(),pipe_name.key_2nd);

	__ntapi->tt_uint32_to_hex_utf16(	timeout.ihigh + (uint32_t)*counter,pipe_name.key_3rd);

	__ntapi->tt_uint32_to_hex_utf16(timeout.ulow + (uint32_t)*counter,pipe_name.key_4th);

	__ntapi->tt_uint32_to_hex_utf16(

		__ntapi->tt_buffer_crc32(0,(char *)&pipe_name,sizeof(pipe_name)),

		pipe_name.key_5th);

	__ntapi->tt_uint32_to_hex_utf16(

		__ntapi->tt_buffer_crc32(0,(char *)&pipe_name,sizeof(pipe_name)),

		pipe_name.key_6th);

	__ntapi->tt_uint32_to_hex_utf16(

		__ntapi->tt_buffer_crc32(0,(char *)&pipe_name,sizeof(pipe_name)),

		pipe_name.key_1st);

	__ntapi->tt_uint32_to_hex_utf16(

		__ntapi->tt_buffer_crc32(0,(char *)&pipe_name,sizeof(pipe_name)),

		pipe_name.key_2nd);

	__ntapi->tt_uint32_to_hex_utf16(

		__ntapi->tt_buffer_crc32(0,(char *)&pipe_name,sizeof(pipe_name)),

		pipe_name.key_3rd);

	__ntapi->tt_uint32_to_hex_utf16(

		__ntapi->tt_buffer_crc32(0,(char *)&pipe_name,sizeof(pipe_name)),

		pipe_name.key_4th);

	/* nt_name */

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

	nt_name.maxlen = (uint16_t)(sizeof(pipe_name));

	nt_name.buffer = (uint16_t *)&pipe_name;

	/* 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	= 0x0;

	oa.sec_desc	= (nt_security_descriptor *)0;

	oa.sec_qos	= &sqo;;

	timeout.ihigh = 0xffffffff;

	timeout.ulow  = 0x0;

	/* the reading end */

	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);

	if (status != NT_STATUS_SUCCESS) {

		return status;

	}

	/* the writing end(s) */

	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 != NT_STATUS_SUCCESS) {

		__ntapi->zw_close(hread);

		return status;

	}

	*hpipe_read  = hread;

	*hpipe_write = hwrite;

	return status;

}