Blame src/ipc/ntapi_ipc_create_pipe_v2.c

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/********************************************************/
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/*  ntapi: Native API core library                      */
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/*  Copyright (C) 2013--2021  SysDeer Technologies, LLC */
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/*  Released under GPLv2 and GPLv3; see COPYING.NTAPI.  */
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/********************************************************/
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#include <psxtypes/psxtypes.h>
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#include <ntapi/nt_file.h>
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#include <ntapi/nt_string.h>
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#include <ntapi/nt_tty.h>
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#include <ntapi/ntapi.h>
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#include "ntapi_impl.h"
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int32_t __stdcall	__ntapi_ipc_create_pipe_v2(
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	__out		void **			hpipe_read,
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	__out		void **			hpipe_write,
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	__in		uint32_t		advisory_buffer_size)
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{
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	int32_t			status;
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	void *			hdevpipes;
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	void *			hwrite;
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	void *			hread;
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	nt_object_attributes	oa;
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	nt_io_status_block	iosb;
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	nt_sqos			sqos;
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	nt_unicode_string	nt_name;
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	nt_timeout		timeout;
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	const wchar16_t pipe_dir[] =  {
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		'\\','D','e','v','i','c','e',
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		'\\','N','a','m','e','d','P','i','p','e','\\',0
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	};
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	/* nt_name: pipe device directory */
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	nt_name.strlen = (uint16_t)(sizeof(pipe_dir) - sizeof(wchar16_t));
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	nt_name.maxlen = 0;
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	nt_name.buffer = (uint16_t *)pipe_dir;
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	/* init security structure */
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	sqos.length 			= sizeof(sqos);
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	sqos.impersonation_level	= NT_SECURITY_ANONYMOUS;
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	sqos.context_tracking_mode	= NT_SECURITY_TRACKING_STATIC;
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	sqos.effective_only		= 1;
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	/* oa */
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	oa.len		= sizeof(oa);
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	oa.root_dir	= (void *)0;
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	oa.obj_name	= &nt_name;
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	oa.obj_attr	= NT_OBJ_CASE_INSENSITIVE | NT_OBJ_INHERIT;
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	oa.sec_desc	= (nt_security_descriptor *)0;
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	oa.sec_qos	= &sqo;;
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	if ((status = __ntapi->zw_open_file(
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			&hdevpipes,
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			NT_GENERIC_READ | NT_SEC_SYNCHRONIZE,
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			&oa,
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			&iosb,
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			NT_FILE_SHARE_READ | NT_FILE_SHARE_WRITE,
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			NT_FILE_DIRECTORY_FILE)))
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		return status;
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	timeout.ihigh = 0xffffffff;
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	timeout.ulow  = 0x0;
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	oa.root_dir = hdevpipes;
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	nt_name.strlen = 0;
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	nt_name.buffer = 0;
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	status = __ntapi->zw_create_named_pipe_file(
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		&hread,
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		NT_GENERIC_READ | NT_SEC_SYNCHRONIZE | NT_FILE_WRITE_ATTRIBUTES,
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		&oa,
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		&iosb,
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		NT_FILE_SHARE_READ | NT_FILE_SHARE_WRITE,
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		NT_FILE_CREATE,
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		NT_FILE_ASYNCHRONOUS_IO,
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		NT_FILE_PIPE_BYTE_STREAM_TYPE,
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		NT_FILE_PIPE_BYTE_STREAM_MODE,
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		NT_FILE_PIPE_QUEUE_OPERATION,
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		1,
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		advisory_buffer_size,
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		advisory_buffer_size,
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		&timeout);
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	__ntapi->zw_close(
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		hdevpipes);
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	if (status)
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		return status;
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	/* the pipe is now our root directory */
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	oa.root_dir = hread;
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	status = __ntapi->zw_open_file(
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		&hwrite,
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		NT_GENERIC_WRITE | NT_SEC_SYNCHRONIZE | NT_FILE_READ_ATTRIBUTES,
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		&oa,
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		&iosb,
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		NT_FILE_SHARE_READ | NT_FILE_SHARE_WRITE,
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		NT_FILE_WRITE_THROUGH | NT_FILE_SYNCHRONOUS_IO_ALERT | NT_FILE_NON_DIRECTORY_FILE);
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	if (status) {
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		__ntapi->zw_close(hread);
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		return status;
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	}
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	*hpipe_read  = hread;
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	*hpipe_write = hwrite;
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	return status;
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}