Blame src/ipc/ntapi_ipc_create_pipe_v1.c

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/********************************************************/
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/*  ntapi: Native API core library                      */
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/*  Copyright (C) 2013--2021  Z. Gilboa                 */
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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_atomic.h>
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#include <ntapi/ntapi.h>
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#include "ntapi_impl.h"
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typedef struct __attr_ptr_size_aligned__ _nt_tty_pipe_name {
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	wchar16_t	pipe_dir[8];
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	wchar16_t	back_slash;
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	wchar16_t	key_1st[8];
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	wchar16_t	uscore_1st;
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	wchar16_t	key_2nd[8];
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	wchar16_t	uscore_2nd;
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	wchar16_t	key_3rd[8];
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	wchar16_t	uscore_3rd;
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	wchar16_t	key_4th[8];
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	wchar16_t	uscore_4th;
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	wchar16_t	key_5th[8];
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	wchar16_t	uscore_5th;
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	wchar16_t	key_6th[8];
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	wchar16_t	null_termination;
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	void *		pad;
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} nt_tty_pipe_name;
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int32_t __stdcall	__ntapi_ipc_create_pipe_v1(
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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 *				hread;
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	void *				hwrite;
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	nt_object_attributes		oa;
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	nt_io_status_block		iosb;
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	nt_unicode_string		nt_name;
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	nt_security_quality_of_service	sqos;
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	nt_large_integer		timeout;
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	intptr_t *			counter;
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	nt_tty_pipe_name pipe_name =  {
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		{'\\','?','?','\\','p','i','p','e'},
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		'\\',
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		{0},'_',
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		{0},'_',
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		{0},'_',
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		{0},'_',
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		{0},'_',
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		{0},
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		0,0
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	};
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	(void)advisory_buffer_size;
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	/* pipe_count  */
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	counter = (intptr_t *)&__ntapi_internals()->v1_pipe_counter;
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	at_locked_inc(counter);
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	/* get system time */
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	status = __ntapi->zw_query_system_time(&timeout);
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	if (status != NT_STATUS_SUCCESS)
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		return status;
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	/* pipe name (no anonymous pipe prior to vista) */
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	__ntapi->tt_uint32_to_hex_utf16(	pe_get_current_process_id(),pipe_name.key_1st);
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	__ntapi->tt_uint32_to_hex_utf16(	pe_get_current_thread_id(),pipe_name.key_2nd);
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	__ntapi->tt_uint32_to_hex_utf16(	timeout.ihigh + (uint32_t)*counter,pipe_name.key_3rd);
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	__ntapi->tt_uint32_to_hex_utf16(timeout.ulow + (uint32_t)*counter,pipe_name.key_4th);
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	__ntapi->tt_uint32_to_hex_utf16(
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		__ntapi->tt_buffer_crc32(0,(char *)&pipe_name,sizeof(pipe_name)),
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		pipe_name.key_5th);
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	__ntapi->tt_uint32_to_hex_utf16(
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		__ntapi->tt_buffer_crc32(0,(char *)&pipe_name,sizeof(pipe_name)),
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		pipe_name.key_6th);
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	__ntapi->tt_uint32_to_hex_utf16(
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		__ntapi->tt_buffer_crc32(0,(char *)&pipe_name,sizeof(pipe_name)),
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		pipe_name.key_1st);
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	__ntapi->tt_uint32_to_hex_utf16(
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		__ntapi->tt_buffer_crc32(0,(char *)&pipe_name,sizeof(pipe_name)),
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		pipe_name.key_2nd);
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	__ntapi->tt_uint32_to_hex_utf16(
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		__ntapi->tt_buffer_crc32(0,(char *)&pipe_name,sizeof(pipe_name)),
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		pipe_name.key_3rd);
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	__ntapi->tt_uint32_to_hex_utf16(
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		__ntapi->tt_buffer_crc32(0,(char *)&pipe_name,sizeof(pipe_name)),
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		pipe_name.key_4th);
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	/* nt_name */
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	nt_name.strlen = (uint16_t)(sizeof(pipe_name) - sizeof(wchar16_t));
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	nt_name.maxlen = (uint16_t)(sizeof(pipe_name));
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	nt_name.buffer = (uint16_t *)&pipe_name;
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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	= 0x0;
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	oa.sec_desc	= (nt_security_descriptor *)0;
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	oa.sec_qos	= &sqo;;
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	timeout.ihigh = 0xffffffff;
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	timeout.ulow  = 0x0;
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	/* the reading end */
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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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	if (status != NT_STATUS_SUCCESS) {
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		return status;
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	}
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	/* the writing end(s) */
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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 != NT_STATUS_SUCCESS) {
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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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}