summaryrefslogtreecommitdiffhomepage
path: root/src/object/ntapi_tt_keyed_object_directory.c
blob: 6e7352e91f34ee657b6002f5cb744eea67700688 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
/********************************************************/
/*  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_object.h>
#include <ntapi/nt_guid.h>
#include <ntapi/nt_string.h>
#include <ntapi/nt_acl.h>
#include "ntapi_impl.h"

typedef ntapi_zw_open_directory_object objdir_open_fn;

static void __tt_guid_to_hex_utf16(
	__in	const nt_guid *	guid,
	__out	wchar16_t * 	hex_str)
{
	uint16_t key;

	__ntapi_tt_uint32_to_hex_utf16(
		guid->data1,&hex_str[0]);

	__ntapi_tt_uint16_to_hex_utf16(
		guid->data2,&hex_str[9]);

	__ntapi_tt_uint16_to_hex_utf16(
		guid->data3,&hex_str[14]);

	key = guid->data4[0] * 0x100 + guid->data4[1];

	__ntapi_tt_uint16_to_hex_utf16(
		key,&hex_str[19]);

	key = guid->data4[2] * 0x100 + guid->data4[3];

	__ntapi_tt_uint16_to_hex_utf16(
		key,&hex_str[24]);

	key = guid->data4[4] * 0x100 + guid->data4[5];

	__ntapi_tt_uint16_to_hex_utf16(
		key,&hex_str[28]);

	key = guid->data4[6] * 0x100 + guid->data4[7];

	__ntapi_tt_uint16_to_hex_utf16(
		key,&hex_str[32]);

	hex_str[8]  = '-';
	hex_str[13] = '-';
	hex_str[18] = '-';
	hex_str[23] = '-';
}

static nt_access_allowed_ace * __ipc_ace_init(
	nt_access_allowed_ace * ace,
	uint32_t		mask,
	const nt_sid *		sid)
{
	ace->mask             = mask;
	ace->header.ace_type  = NT_ACE_TYPE_ACCESS_ALLOWED;
	ace->header.ace_flags = 0;
	ace->header.ace_size  = sizeof(uint32_t) * sid->sub_authority_count
	                        + __offsetof(nt_access_allowed_ace,sid_start)
	                        + __offsetof(nt_sid,sub_authority);

	__ntapi->tt_sid_copy(
		(nt_sid *)&ace->sid_start,
		sid);

	return (nt_access_allowed_ace *)((size_t)ace + ace->header.ace_size);
}

static void __ipc_sd_init(nt_sd_common_buffer * sd, int fdir)
{
	nt_access_allowed_ace * ace;
	uint32_t		mask_system;
	uint32_t		mask_owner;
	uint32_t		mask_other;

	/* access mask */
	if (fdir) {
		mask_system = NT_SEC_READ_CONTROL
				| NT_DIRECTORY_QUERY
				| NT_DIRECTORY_TRAVERSE
				| NT_DIRECTORY_CREATE_OBJECT
				| NT_DIRECTORY_CREATE_SUBDIRECTORY;

		mask_owner  = NT_DIRECTORY_ALL_ACCESS;
		mask_other  = mask_system;
	} else {
		mask_system = NT_SYMBOLIC_LINK_ALL_ACCESS;
		mask_owner  = NT_SYMBOLIC_LINK_ALL_ACCESS;
		mask_other  = NT_SYMBOLIC_LINK_ALL_ACCESS;
	}

	/* sd header */
	sd->sd.revision         = 1;
	sd->sd.sbz_1st          = 0;
	sd->sd.control          = NT_SE_SELF_RELATIVE | NT_SE_DACL_PRESENT;
	sd->sd.offset_owner     = __offsetof(nt_sd_common_buffer,owner);
	sd->sd.offset_group     = 0;
	sd->sd.offset_dacl      = __offsetof(nt_sd_common_buffer,dacl);
	sd->sd.offset_sacl      = 0;

	/* owner sid */
	__ntapi->tt_sid_copy(
		(nt_sid *)&sd->owner,
		__ntapi_internals()->user);


	/* ace's for LOCAL_SYSTEM, AUTHENTICATED_USERS, and process token user */
	ace = (nt_access_allowed_ace *)&sd->buffer;
	ace = __ipc_ace_init(ace,mask_system,&(nt_sid){1,1,{{0,0,0,0,0,5}},{18}});
	ace = __ipc_ace_init(ace,mask_other,&(nt_sid){1,1,{{0,0,0,0,0,5}},{11}});
	ace = __ipc_ace_init(ace,mask_owner,(nt_sid *)&(nt_sid_os){1,2,{{0,0,0,0,0,5}},{32,544}});
	ace = __ipc_ace_init(ace,mask_owner,&(nt_sid){1,1,{{0,0,0,0,0,3}},{4}});
	ace = __ipc_ace_init(ace,mask_owner,(nt_sid *)&sd->owner);

	sd->dacl.acl_revision   = 0x02;
	sd->dacl.sbz_1st        = 0;
	sd->dacl.acl_size       = (uint16_t)((char *)ace - (char *)&sd->dacl);
	sd->dacl.ace_count      = 3;
	sd->dacl.sbz_2nd        = 0;

}

static int32_t __stdcall __tt_create_ipc_object_directory(
	__out	void **			hdir,
	__in	uint32_t		desired_access,
	__in	const wchar16_t		prefix[6],
	__in	const nt_guid *		guid)
{
	int32_t			status;
	nt_ipc_objdir_name	objdir_name;
	nt_unicode_string	name;
	nt_sd_common_buffer	sd;
	nt_oa			oa;
	nt_sqos			sqos = {
					sizeof(sqos),
					NT_SECURITY_IMPERSONATION,
					NT_SECURITY_TRACKING_DYNAMIC,
					1};

	__ipc_sd_init(&sd,1);

	__ntapi->tt_generic_memcpy(
		objdir_name.base_named_objects,
		(wchar16_t[])__NT_BASED_NAMED_OBJECTS,
		sizeof(objdir_name.base_named_objects));

	__ntapi->tt_memcpy_utf16(
		objdir_name.prefix,
		prefix,
		sizeof(objdir_name.prefix));

	__tt_guid_to_hex_utf16(
		guid,objdir_name.guid);

	objdir_name.backslash = '\\';
	objdir_name.uscore    = '_';

	name.strlen	= sizeof(objdir_name);
	name.maxlen	= 0;
	name.buffer	= objdir_name.base_named_objects;

	oa.len		= sizeof(oa);
	oa.root_dir	= 0;
	oa.obj_name	= &name;
	oa.obj_attr	= NT_OBJ_INHERIT
			  | NT_OBJ_OPENIF
			  | NT_OBJ_CASE_INSENSITIVE;
	oa.sec_desc	= &sd.sd;
	oa.sec_qos	= &sqos;

	status = __ntapi->zw_create_directory_object(
		hdir,desired_access,&oa);

	return (status == NT_STATUS_OBJECT_NAME_EXISTS)
		? NT_STATUS_SUCCESS
		: status;
}


static int32_t __stdcall __tt_create_keyed_object_directory(
	__out	void **			hdir,
	__in	uint32_t		desired_access,
	__in	void *			hparent,
	__in	uint32_t		key,
	__in	objdir_open_fn *	openfn)
{
	wchar16_t		keystr[8];
	nt_unicode_string	name;
	nt_sd_common_buffer	sd;
	nt_oa			oa;
	nt_sqos			sqos = {
					sizeof(sqos),
					NT_SECURITY_IMPERSONATION,
					NT_SECURITY_TRACKING_DYNAMIC,
					1};

	__ipc_sd_init(&sd,1);

	__ntapi->tt_uint32_to_hex_utf16(
		key,keystr);

	name.strlen = sizeof(keystr);
	name.maxlen = 0;
	name.buffer = keystr;

	oa.len		= sizeof(oa);
	oa.root_dir	= hparent;
	oa.obj_name	= &name;
	oa.obj_attr	= NT_OBJ_INHERIT;
	oa.sec_desc	= &sd.sd;
	oa.sec_qos	= &sqos;

	return openfn(hdir,desired_access,&oa);
}


static int32_t __stdcall __tt_create_object_directory_entry(
	__out	void **			hentry,
	__in	uint32_t		desired_access,
	__in	void *			hdir,
	__in	void *			htarget,
	__in	nt_unicode_string *	target_name,
	__in	uint32_t		key)
{
	int32_t			status;
	nt_oa			oa;
	nt_unicode_string	name;
	nt_sd_common_buffer	sd;
	wchar16_t		keystr[8];
	uintptr_t		buffer[2048/sizeof(uintptr_t)];
	nt_sqos			sqos = {
					sizeof(sqos),
					NT_SECURITY_IMPERSONATION,
					NT_SECURITY_TRACKING_DYNAMIC,
					1};

	if (!target_name) {
		if ((status = __ntapi->zw_query_object(
				htarget,
				NT_OBJECT_NAME_INFORMATION,
				buffer,sizeof(buffer),0)))
			return status;
		target_name = (nt_unicode_string *)buffer;
	}

	__ipc_sd_init(&sd,0);
	__ntapi->tt_uint32_to_hex_utf16(key,keystr);

	name.strlen = sizeof(keystr);
	name.maxlen = 0;
	name.buffer = keystr;

	oa.len		= sizeof(oa);
	oa.root_dir	= hdir;
	oa.obj_name	= &name;
	oa.obj_attr	= 0;
	oa.sec_desc	= &sd.sd;
	oa.sec_qos	= &sqos;

	return __ntapi->zw_create_symbolic_link_object(
		hentry,
		desired_access,
		&oa,target_name);
}

int32_t __stdcall __ntapi_tt_open_ipc_object_directory(
	__out	void **			hdir,
	__in	uint32_t		desired_access,
	__in	const wchar16_t		prefix[6],
	__in	const nt_guid *		guid)
{
	return __tt_create_ipc_object_directory(
		hdir,desired_access,
		prefix,guid);
}

int32_t __stdcall __ntapi_tt_create_ipc_object_directory_entry(
	__out	void **			hentry,
	__in	uint32_t		desired_access,
	__in	void *			hdir,
	__in	void *			htarget,
	__in	nt_unicode_string *	target_name,
	__in	uint32_t		key)
{
	return __tt_create_object_directory_entry(
		hentry,desired_access,
		hdir,htarget,target_name,key);
}

int32_t __stdcall __ntapi_tt_open_dev_object_directory(
	__out	void **			hdir,
	__in	uint32_t		desired_access,
	__in	const wchar16_t		prefix[6],
	__in	const nt_guid *		ipc_guid)
{
	return __tt_create_ipc_object_directory(
		hdir,desired_access,
		prefix,ipc_guid);
}

int32_t __stdcall __ntapi_tt_create_dev_object_directory_entry(
	__out	void **			hentry,
	__in	uint32_t		desired_access,
	__in	void *			hdir,
	__in	void *			htarget,
	__in	nt_unicode_string *	target_name,
	__in	const nt_guid *		dev_guid)
{
	int32_t			status;
	nt_oa			oa;
	nt_unicode_string	name;
	nt_sd_common_buffer	sd;
	nt_guid_str_utf16	guidstr;
	uintptr_t		buffer[2048/sizeof(uintptr_t)];
	nt_sqos			sqos = {
					sizeof(sqos),
					NT_SECURITY_IMPERSONATION,
					NT_SECURITY_TRACKING_DYNAMIC,
					1};

	if (!target_name) {
		if ((status = __ntapi->zw_query_object(
				htarget,
				NT_OBJECT_NAME_INFORMATION,
				buffer,sizeof(buffer),0)))
			return status;
		target_name = (nt_unicode_string *)buffer;
	}

	__ipc_sd_init(&sd,0);
	__ntapi->tt_guid_to_string_utf16(dev_guid,&guidstr);

	name.strlen = sizeof(guidstr);
	name.maxlen = 0;
	name.buffer = &guidstr.lbrace;

	oa.len		= sizeof(oa);
	oa.root_dir	= hdir;
	oa.obj_name	= &name;
	oa.obj_attr	= 0;
	oa.sec_desc	= &sd.sd;
	oa.sec_qos	= &sqos;

	return __ntapi->zw_create_symbolic_link_object(
		hentry,
		desired_access,
		&oa,target_name);
}

int32_t __stdcall __ntapi_tt_create_keyed_object_directory(
	__out	void **			hdir,
	__in	uint32_t		desired_access,
	__in	void *			hparent,
	__in	uint32_t		key)
{
	return __tt_create_keyed_object_directory(
		hdir,desired_access,
		hparent,key,
		__ntapi->zw_create_directory_object);
}

int32_t __stdcall __ntapi_tt_open_keyed_object_directory(
	__out	void **			hdir,
	__in	uint32_t		desired_access,
	__in	void *			hparent,
	__in	uint32_t		key)
{
	return __tt_create_keyed_object_directory(
		hdir,desired_access,
		hparent,key,
		__ntapi->zw_open_directory_object);
}

int32_t __stdcall __ntapi_tt_create_keyed_object_directory_entry(
	__out	void **			hentry,
	__in	uint32_t		desired_access,
	__in	void *			hdir,
	__in	void *			htarget,
	__in	nt_unicode_string *	target_name,
	__in	uint32_t		key)
{
	return __tt_create_object_directory_entry(
		hentry,desired_access,
		hdir,htarget,target_name,key);
}

int32_t __stdcall __ntapi_tt_keyed_object_to_key(
	__in	void *			hentry,
	__out	uint32_t *		key,
	__out	void *			buffer,
	__in	size_t			buflen)
{
	int32_t			status;
	wchar16_t *		pidname;
	nt_unicode_string *	dirname;

	if ((status = __ntapi->zw_query_object(
			hentry,
			NT_OBJECT_NAME_INFORMATION,
			buffer,buflen,
			&(uint32_t){0})))
		return status;

	dirname = (nt_unicode_string *)buffer;
	pidname = dirname->buffer;

	if (dirname->strlen <= 8 * sizeof(wchar16_t))
		return NT_STATUS_INTERNAL_ERROR;

	pidname += dirname->strlen / sizeof(wchar16_t);
	pidname -= 8;

	if (pidname[-1] != '\\')
		return NT_STATUS_INVALID_PARAMETER;

	return __ntapi->tt_hex_utf16_to_uint32(
		pidname,key);
}