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

/*  ntapi: Native API core library                      */

/*  Copyright (C) 2013--2017  Z. Gilboa                 */

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

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

#include <psxtypes/psxtypes.h>

#include <ntapi/nt_guid.h>

#include <ntapi/nt_port.h>

#include <ntapi/nt_string.h>

#include "ntapi_impl.h"

typedef wchar16_t __port_service_prefix[6];

static const __port_service_prefix	__port_service_null = {0};

static const __port_service_prefix	__port_service_prefixes[NT_PORT_TYPE_CAP][NT_PORT_SUBTYPE_CAP] = {

					{{'s','v','c','a','n','y'}},

					{{'n','t','c','t','t','y'}},

					{{'v','m','o','u','n','t'}},

					{{'d','a','e','m','o','n'}},

					{{'s','y','m','l','n','k'}},

					{{'n','t','p','r','o','c'}},

					{{'s','e','m','c','t','l'}},

					{{'s','e','m','s','v','c'}}};

static const nt_guid		__port_guids[NT_PORT_TYPE_CAP][NT_PORT_SUBTYPE_CAP] = {

					{NT_PORT_GUID_DEFAULT},

					{NT_PORT_GUID_SUBSYSTEM},

					{NT_PORT_GUID_VMOUNT},

					{NT_PORT_GUID_DAEMON},

					{NT_PORT_GUID_SYMLNK},

					{NT_PORT_GUID_NTPROC},

					{NT_PORT_GUID_SEMCTL},

					{NT_PORT_GUID_SEMSVC}};

int32_t __stdcall __ntapi_tt_port_guid_from_type(

	__out	nt_guid *		guid,

	__in	nt_port_type		type,

	__in	nt_port_subtype		subtype)

{

	const nt_guid *	src_guid;

	if ((type >= NT_PORT_TYPE_CAP) || (subtype >= NT_PORT_SUBTYPE_CAP))

		return NT_STATUS_INVALID_PARAMETER;

	src_guid = &(__port_guids[type][subtype]);

	__ntapi->tt_aligned_block_memcpy(

		(uintptr_t *)guid,

		(uintptr_t *)src_guid,

		sizeof(nt_guid));

	return NT_STATUS_SUCCESS;

}

int32_t __stdcall __ntapi_tt_port_type_from_guid(

	__out	nt_port_type *		type,

	__out	nt_port_subtype *	subtype,

	__in	const nt_guid *		guid)

{

	int		itype;

	int		isubtype;

	for (itype=0; itype

		for (isubtype=0; isubtype

			if (!(__ntapi_tt_guid_compare(

					&__port_guids[itype][isubtype],

					guid))) {

				*type	 = (nt_port_type)itype;

				*subtype = (nt_port_subtype)isubtype;

				return NT_STATUS_SUCCESS;

			}

		}

	}

	return NT_STATUS_NOT_FOUND;

}

int32_t __stdcall __ntapi_tt_port_generate_keys(

	__out	nt_port_keys *		keys)

{

	int32_t			status;

	nt_large_integer	ticks;

	nt_large_integer	pcfreq;

	nt_luid			luid;

	if ((status = __ntapi->zw_query_performance_counter(&ticks,&pcfreq)))

		return status;

	if ((status = __ntapi->zw_allocate_locally_unique_id(&luid)))

		return status;

	keys->key[0] = pe_get_current_process_id();

	keys->key[1] = pe_get_current_thread_id();

	keys->key[2] = ticks.ihigh;

	keys->key[3] = ticks.ulow;

	keys->key[4] = luid.high;

	keys->key[5] = luid.low;

	return NT_STATUS_SUCCESS;

}

void __stdcall	__ntapi_tt_port_format_keys(

	__in	nt_port_keys *		keys,

	__out	nt_port_name_keys *	name_keys)

{

	__ntapi->tt_uint32_to_hex_utf16(keys->key[0],name_keys->key_1st);

	__ntapi->tt_uint32_to_hex_utf16(keys->key[1],name_keys->key_2nd);

	__ntapi->tt_uint32_to_hex_utf16(keys->key[2],name_keys->key_3rd);

	__ntapi->tt_uint32_to_hex_utf16(keys->key[3],name_keys->key_4th);

	__ntapi->tt_uint32_to_hex_utf16(keys->key[4],name_keys->key_5th);

	__ntapi->tt_uint32_to_hex_utf16(keys->key[5],name_keys->key_6th);

	return;

}

void __stdcall __ntapi_tt_port_name_from_attr(

	__out	nt_port_name *		name,

	__in	nt_port_attr *		attr)

{

	wchar16_t bno[] = __NT_BASED_NAMED_OBJECTS;

	/* base named objects */

	__ntapi->tt_memcpy_utf16(

		name->base_named_objects,

		bno,sizeof(bno));

	/* service prefix */

	if (attr && (attr->type < NT_PORT_TYPE_CAP) && (attr->subtype < NT_PORT_SUBTYPE_CAP))

		__ntapi->tt_memcpy_utf16(

			name->svc_prefix,

			__port_service_prefixes[attr->type][attr->subtype],

			sizeof(name->svc_prefix));

	else

		__ntapi->tt_memcpy_utf16(

			name->svc_prefix,

			__port_service_null,

			sizeof(name->svc_prefix));

	/* port guid */

	__ntapi->tt_guid_to_string_utf16(

		&attr->guid,

		(nt_guid_str_utf16 *)&name->port_guid);

	/* port name keys */

	__ntapi_tt_port_format_keys(

		&attr->keys,

		&name->port_name_keys);

	/* backslash and underscores */

	name->backslash = '\\';

	name->port_guid.uscore_guid = '_';

	name->port_guid.uscore_keys = '_';

	name->port_name_keys.uscore_1st  = '_';

	name->port_name_keys.uscore_2nd  = '_';

	name->port_name_keys.uscore_3rd  = '_';

	name->port_name_keys.uscore_4th  = '_';

	name->port_name_keys.uscore_5th  = '_';

	/* null termination */

	name->null_termination = 0;

	return;

}

static int32_t __tt_port_attr_from_name(

	__out	nt_port_attr *		attr,

	__in	const nt_port_name *	name)

{

	int		i;

	int		type;

	int32_t		status;

	const wchar16_t bno[] = __NT_BASED_NAMED_OBJECTS;

	/* base named objects */

	if (__ntapi->tt_strncmp_utf16(

			name->base_named_objects,

			bno,sizeof(bno)))

		return NT_STATUS_INVALID_PARAMETER;

	/* service prefix */

	for (i=0, type=-1; i

		if (!(__ntapi->tt_strncmp_utf16(

				name->svc_prefix,

				__port_service_prefixes[i][0],

				sizeof(__port_service_prefix))))

			type = i;

	if (type < 0)

		return NT_STATUS_INVALID_PARAMETER;

	/* port guid */

	if ((status = __ntapi->tt_string_to_guid_utf16(

			(nt_guid_str_utf16 *)&name->port_guid,

			&attr->guid)))

		return status;

	/* port keys */

	if ((status = __ntapi->tt_hex_utf16_to_uint32(

			name->port_name_keys.key_1st,

			&attr->keys.key[0])))

		return status;

	if ((status = __ntapi->tt_hex_utf16_to_uint32(

			name->port_name_keys.key_2nd,

			&attr->keys.key[1])))

		return status;

	if ((status = __ntapi->tt_hex_utf16_to_uint32(

			name->port_name_keys.key_3rd,

			&attr->keys.key[2])))

		return status;

	if ((status = __ntapi->tt_hex_utf16_to_uint32(

			name->port_name_keys.key_4th,

			&attr->keys.key[3])))

		return status;

	if ((status = __ntapi->tt_hex_utf16_to_uint32(

			name->port_name_keys.key_5th,

			&attr->keys.key[4])))

		return status;

	if ((status = __ntapi->tt_hex_utf16_to_uint32(

			name->port_name_keys.key_6th,

			&attr->keys.key[5])))

		return status;

	/* backslash and underscores */

	if (name->backslash != '\\')

		return NT_STATUS_INVALID_PARAMETER;

	if (name->port_name_keys.uscore_1st != '_')

		return NT_STATUS_INVALID_PARAMETER;

	if (name->port_name_keys.uscore_2nd != '_')

		return NT_STATUS_INVALID_PARAMETER;

	if (name->port_name_keys.uscore_3rd != '_')

		return NT_STATUS_INVALID_PARAMETER;

	if (name->port_name_keys.uscore_4th != '_')

		return NT_STATUS_INVALID_PARAMETER;

	if (name->port_name_keys.uscore_5th != '_')

		return NT_STATUS_INVALID_PARAMETER;

	/* type */

	attr->type    = type;

	attr->subtype = 0;

	/* unknown defaults */

	attr->ver_major = 0;

	attr->ver_minor = 0;

	attr->options   = 0;

	attr->flags     = 0;

	/* all done */

	return NT_STATUS_SUCCESS;

}

int32_t __stdcall __ntapi_tt_port_attr_from_name(

	__out	nt_port_attr *		attr,

	__in	const nt_port_name *	name)

{

	/* null termination */

	if (name->null_termination)

		return NT_STATUS_INVALID_PARAMETER;

	return __tt_port_attr_from_name(

		attr,name);

}

int32_t __stdcall __ntapi_tt_port_attr_from_string(

	__out	nt_port_attr *			attr,

	__in	const nt_unicode_string *	str)

{

	if (str->strlen != ((size_t)&(((nt_port_name *)0)->null_termination)))

		return NT_STATUS_INVALID_PARAMETER;

	return __tt_port_attr_from_name(

		attr,(const nt_port_name *)str->buffer);

}

int32_t __stdcall __ntapi_tt_port_attr_from_symlink(

	__out	nt_port_attr *	attr,

	__in	void *		symlink)

{

	int32_t			status;

	size_t			size;

	nt_unicode_string *	target;

	uintptr_t		buffer[512/sizeof(uintptr_t)];

	target         = (nt_unicode_string *)buffer;

	target->strlen = 0;

	target->maxlen = sizeof(buffer) - sizeof(nt_unicode_string);

	target->buffer = (wchar16_t *)&target[1];

	if ((status = __ntapi->zw_query_symbolic_link_object(

			symlink,target,&size)))

		return status;

	if (target->strlen != ((size_t)&(((nt_port_name *)0)->null_termination)))

		return NT_STATUS_INVALID_PARAMETER;

	return __tt_port_attr_from_name(

		attr,(const nt_port_name *)target->buffer);

}