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

/*  ntapi: Native API core library                      */

/*  Copyright (C) 2013--2021  Z. Gilboa                 */

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

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

#include <psxtypes/psxtypes.h>

#include <pemagine/pemagine.h>

#include <ntapi/nt_status.h>

#include <ntapi/nt_object.h>

#include <ntapi/nt_thread.h>

#include <ntapi/nt_process.h>

#include <ntapi/nt_string.h>

#include <ntapi/ntapi.h>

#include "ntapi_impl.h"

struct __ext_params {

	size_t				size_in_bytes;

	nt_create_process_ext_param	file_info;

};

struct __integral_cmdline {

	struct pe_guid_str_utf16	guid;

	wchar16_t			space1;

	wchar16_t			rarg[2];

	wchar16_t			space2;

	wchar16_t			addr[2*__SIZEOF_POINTER__];

	wchar16_t			null;

};

static int32_t __tt_create_process_cancel(nt_create_process_params * params, int32_t status)

{

	if (params->hprocess) {

		__ntapi->zw_terminate_process(params->hprocess,NT_STATUS_INTERNAL_ERROR);

		__ntapi->zw_close(params->hprocess);

	}

	if (params->hthread)

		__ntapi->zw_close(params->hthread);

	return status;

}

int32_t __stdcall __ntapi_tt_create_native_process_v2(

	__in_out	nt_create_process_params *	params)

{

	int32_t				status;

	nt_object_attributes		oa_process;

	nt_object_attributes		oa_thread;

	nt_unicode_string		nt_image;

	nt_unicode_string		nt_cmd_line;

	nt_create_process_info		nt_process_info;

	int				fresume_thread;

	struct __ext_params		ext_params;

	struct __integral_cmdline	fcmdline = {

		{

			'{',{'3','e','4','3','e','c','8','4'},

			'-',{'1','a','f','1'},

			'-',{'4','e','d','e'},

			'-',{'a','c','d','8'},

			'-',{'c','3','d','9','2','0','a','f','c','8','6','8'},

			'}'

		},

	#if (__SIZEOF_POINTER__ == 4)

		' ',{'-','r'},' ',

		{'i','n','t','e','g','r','a','l'},0};

	#elif (__SIZEOF_POINTER__ == 8)

		' ',{'-','r'},' ',

		{'i','n','t','e','g','r','a','l',

		'-','r','u','n','t','i','m','e'},0};

	#endif

	/* validation */

	if (params->cmd_line && params->process_params)

		return NT_STATUS_INVALID_PARAMETER_MIX;

	else if (params->cmd_line && params->rtblock)

		return NT_STATUS_INVALID_PARAMETER_MIX;

	else if (params->environment && params->process_params)

		return NT_STATUS_INVALID_PARAMETER_MIX;

	/* image_name */

	__ntapi->rtl_init_unicode_string(

		&nt_image,

		params->image_name);

	/* oa_process */

	if (!params->obj_attr_process) {

		__ntapi->tt_aligned_block_memset(

			&oa_process,0,sizeof(oa_process));

		oa_process.len = sizeof(oa_process);

		params->obj_attr_process = &oa_process;

	}

	/* oa_thread */

	if (!params->obj_attr_thread) {

		__ntapi->tt_aligned_block_memset(

			&oa_thread,0,sizeof(oa_thread));

		oa_thread.len = sizeof(oa_thread);

		params->obj_attr_thread = &oa_thread;

	}

	/* process_params */

	if (!params->process_params) {

		/* environment */

		if (!params->environment)

			params->environment = __ntapi->tt_get_peb_env_block_utf16();

		/* cmd_line */

		if (params->rtblock) {

			nt_cmd_line.strlen = sizeof(fcmdline) - sizeof(fcmdline.null);

			nt_cmd_line.maxlen = sizeof(fcmdline);

			nt_cmd_line.buffer = &fcmdline.guid.lbrace;

			params->cmd_line   = &fcmdline.guid.lbrace;

		} else {

			if (!params->cmd_line)

				params->cmd_line = params->image_name;

			__ntapi->rtl_init_unicode_string(

				&nt_cmd_line,

				params->cmd_line);

		}

		if ((status = __ntapi->rtl_create_process_parameters(

				&params->process_params,

				&nt_image,

				(nt_unicode_string *)0,

				(nt_unicode_string *)0,

				&nt_cmd_line,

				params->environment,

				(nt_unicode_string *)0,

				(nt_unicode_string *)0,

				(nt_unicode_string *)0,

				(nt_unicode_string *)0)))

			return status;

		__ntapi->rtl_normalize_process_params(params->process_params);

	}

	/* create_process_info */

	if (!params->create_process_info) {

		__ntapi->tt_aligned_block_memset(

			&nt_process_info,0,sizeof(nt_process_info));

		nt_process_info.size			   = sizeof(nt_create_process_info);

		nt_process_info.state			   = NT_PROCESS_CREATE_INITIAL_STATE;

		nt_process_info.init_state.init_flags	   = NT_PROCESS_CREATE_INFO_OBTAIN_OUTPUT;

		nt_process_info.init_state.file_access_ext = NT_FILE_READ_ATTRIBUTES|NT_FILE_READ_ACCESS;

		params->create_process_info = &nt_process_info;

	}

	/* create_process_ext_params */

	if (!params->create_process_ext_params) {

		__ntapi->tt_aligned_block_memset(

			&ext_params,0,sizeof(ext_params));

		ext_params.size_in_bytes = sizeof(ext_params);

		/* file_info */

		ext_params.file_info.ext_param_type	= NT_CREATE_PROCESS_EXT_PARAM_SET_FILE_NAME;

		ext_params.file_info.ext_param_size	= nt_image.strlen;

		ext_params.file_info.ext_param_addr	= nt_image.buffer;

		params->create_process_ext_params = (nt_create_process_ext_params *)&ext_params;

	}

	params->hprocess = 0;

	params->hthread  = 0;

	fresume_thread   = 0;

	if (params->rtblock) {

		fresume_thread = (params->creation_flags_thread ^ 0x01) & 0x01;

		params->creation_flags_thread |= 0x01;

	}

	if (!params->desired_access_process)

		params->desired_access_process = NT_PROCESS_ALL_ACCESS;

	if (!params->desired_access_thread)

		params->desired_access_thread = NT_THREAD_ALL_ACCESS;

	if ((status = __ntapi->zw_create_user_process(

			&params->hprocess,

			&params->hthread,

			params->desired_access_process,

			params->desired_access_thread,

			params->obj_attr_process,

			params->obj_attr_thread,

			params->creation_flags_process,

			params->creation_flags_thread,

			params->process_params,

			params->create_process_info,

			params->create_process_ext_params)))

		return status;

	/* session registration */

	if (params->hsession && (params->hsession != NT_INVALID_HANDLE_VALUE))

		if ((status = __ntapi->tty_client_process_register(

				params->hsession,

				params->pbi.unique_process_id,

				0,0,0)))

			return __tt_create_process_cancel(params,status);

	/* tidy up */

	__ntapi->zw_close(params->create_process_info->success_state.hfile);

	__ntapi->zw_close(params->create_process_info->success_state.hsection);

	if ((status = __ntapi->zw_query_information_process(

			params->hprocess,

			NT_PROCESS_BASIC_INFORMATION,

			&params->pbi,sizeof(params->pbi),

			0)))

		return __tt_create_process_cancel(params,status);

	if (!params->rtblock)

		return NT_STATUS_SUCCESS;

	/* rtdata */

	if ((status = __ntapi_tt_create_remote_runtime_data(params->hprocess,params->rtblock)))

		return __tt_create_process_cancel(params,status);

	/* conditional resume */

	if (fresume_thread && (status = __ntapi->zw_resume_thread(params->hthread,0)))

		return __tt_create_process_cancel(params,status);

	return NT_STATUS_SUCCESS;

}