Line data Source code
1 : /*
2 : Unix SMB/CIFS implementation.
3 : Privileges handling functions
4 : Copyright (C) Jean François Micouleau 1998-2001
5 : Copyright (C) Simo Sorce 2002-2003
6 : Copyright (C) Gerald (Jerry) Carter 2005
7 : Copyright (C) Michael Adam 2007
8 : Copyright (C) Andrew Bartlett 2010
9 : Copyright (C) Andrew Tridgell 2004
10 :
11 : This program is free software; you can redistribute it and/or modify
12 : it under the terms of the GNU General Public License as published by
13 : the Free Software Foundation; either version 3 of the License, or
14 : (at your option) any later version.
15 :
16 : This program is distributed in the hope that it will be useful,
17 : but WITHOUT ANY WARRANTY; without even the implied warranty of
18 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 : GNU General Public License for more details.
20 :
21 : You should have received a copy of the GNU General Public License
22 : along with this program. If not, see <http://www.gnu.org/licenses/>.
23 : */
24 :
25 : /*
26 : * Basic privileges functions (mask-operations and conversion
27 : * functions between the different formats (se_priv, privset, luid)
28 : * moved here * from lib/privileges.c to minimize linker deps.
29 : *
30 : * generally SID- and LUID-related code is left in lib/privileges.c
31 : *
32 : * some extra functions to hide privs array from lib/privileges.c
33 : */
34 :
35 : #include "includes.h"
36 : #include "libcli/security/privileges.h"
37 : #include "libcli/security/privileges_private.h"
38 : #include "librpc/gen_ndr/security.h"
39 :
40 : /* The use of strcasecmp here is safe, all the comparison strings are ASCII */
41 : #undef strcasecmp
42 :
43 : #define NUM_SHORT_LIST_PRIVS 9
44 :
45 : static const struct {
46 : enum sec_privilege luid;
47 : uint64_t privilege_mask;
48 : const char *name;
49 : const char *description;
50 : } privs[] = {
51 :
52 : {SEC_PRIV_MACHINE_ACCOUNT, SEC_PRIV_MACHINE_ACCOUNT_BIT, "SeMachineAccountPrivilege", "Add machines to domain"},
53 : {SEC_PRIV_TAKE_OWNERSHIP, SEC_PRIV_TAKE_OWNERSHIP_BIT, "SeTakeOwnershipPrivilege", "Take ownership of files or other objects"},
54 : {SEC_PRIV_BACKUP, SEC_PRIV_BACKUP_BIT, "SeBackupPrivilege", "Back up files and directories"},
55 : {SEC_PRIV_RESTORE, SEC_PRIV_RESTORE_BIT, "SeRestorePrivilege", "Restore files and directories"},
56 : {SEC_PRIV_REMOTE_SHUTDOWN, SEC_PRIV_REMOTE_SHUTDOWN_BIT, "SeRemoteShutdownPrivilege", "Force shutdown from a remote system"},
57 :
58 : {SEC_PRIV_PRINT_OPERATOR, SEC_PRIV_PRINT_OPERATOR_BIT, "SePrintOperatorPrivilege", "Manage printers"},
59 : {SEC_PRIV_ADD_USERS, SEC_PRIV_ADD_USERS_BIT, "SeAddUsersPrivilege", "Add users and groups to the domain"},
60 : {SEC_PRIV_DISK_OPERATOR, SEC_PRIV_DISK_OPERATOR_BIT, "SeDiskOperatorPrivilege", "Manage disk shares"},
61 : {SEC_PRIV_SECURITY, SEC_PRIV_SECURITY_BIT, "SeSecurityPrivilege", "System security"},
62 :
63 :
64 : /* The list from here on is not displayed in the code from
65 : * source3, and is after index NUM_SHORT_LIST_PRIVS for that
66 : * reason */
67 :
68 : {SEC_PRIV_SYSTEMTIME,
69 : SEC_PRIV_SYSTEMTIME_BIT,
70 : "SeSystemtimePrivilege",
71 : "Set the system clock"},
72 :
73 : {SEC_PRIV_SHUTDOWN,
74 : SEC_PRIV_SHUTDOWN_BIT,
75 : "SeShutdownPrivilege",
76 : "Shutdown the system"},
77 :
78 : {SEC_PRIV_DEBUG,
79 : SEC_PRIV_DEBUG_BIT,
80 : "SeDebugPrivilege",
81 : "Debug processes"},
82 :
83 : {SEC_PRIV_SYSTEM_ENVIRONMENT,
84 : SEC_PRIV_SYSTEM_ENVIRONMENT_BIT,
85 : "SeSystemEnvironmentPrivilege",
86 : "Modify system environment"},
87 :
88 : {SEC_PRIV_SYSTEM_PROFILE,
89 : SEC_PRIV_SYSTEM_PROFILE_BIT,
90 : "SeSystemProfilePrivilege",
91 : "Profile the system"},
92 :
93 : {SEC_PRIV_PROFILE_SINGLE_PROCESS,
94 : SEC_PRIV_PROFILE_SINGLE_PROCESS_BIT,
95 : "SeProfileSingleProcessPrivilege",
96 : "Profile one process"},
97 :
98 : {SEC_PRIV_INCREASE_BASE_PRIORITY,
99 : SEC_PRIV_INCREASE_BASE_PRIORITY_BIT,
100 : "SeIncreaseBasePriorityPrivilege",
101 : "Increase base priority"},
102 :
103 : {SEC_PRIV_LOAD_DRIVER,
104 : SEC_PRIV_LOAD_DRIVER_BIT,
105 : "SeLoadDriverPrivilege",
106 : "Load drivers"},
107 :
108 : {SEC_PRIV_CREATE_PAGEFILE,
109 : SEC_PRIV_CREATE_PAGEFILE_BIT,
110 : "SeCreatePagefilePrivilege",
111 : "Create page files"},
112 :
113 : {SEC_PRIV_INCREASE_QUOTA,
114 : SEC_PRIV_INCREASE_QUOTA_BIT,
115 : "SeIncreaseQuotaPrivilege",
116 : "Increase quota"},
117 :
118 : {SEC_PRIV_CHANGE_NOTIFY,
119 : SEC_PRIV_CHANGE_NOTIFY_BIT,
120 : "SeChangeNotifyPrivilege",
121 : "Register for change notify"},
122 :
123 : {SEC_PRIV_UNDOCK,
124 : SEC_PRIV_UNDOCK_BIT,
125 : "SeUndockPrivilege",
126 : "Undock devices"},
127 :
128 : {SEC_PRIV_MANAGE_VOLUME,
129 : SEC_PRIV_MANAGE_VOLUME_BIT,
130 : "SeManageVolumePrivilege",
131 : "Manage system volumes"},
132 :
133 : {SEC_PRIV_IMPERSONATE,
134 : SEC_PRIV_IMPERSONATE_BIT,
135 : "SeImpersonatePrivilege",
136 : "Impersonate users"},
137 :
138 : {SEC_PRIV_CREATE_GLOBAL,
139 : SEC_PRIV_CREATE_GLOBAL_BIT,
140 : "SeCreateGlobalPrivilege",
141 : "Create global"},
142 :
143 : {SEC_PRIV_ENABLE_DELEGATION,
144 : SEC_PRIV_ENABLE_DELEGATION_BIT,
145 : "SeEnableDelegationPrivilege",
146 : "Enable Delegation"},
147 : };
148 :
149 : /* These are rights, not privileges, and should not be confused. The
150 : * names are very similar, and they are quite similar in behaviour,
151 : * but they are not to be enumerated as a system-wide list or have an
152 : * LUID value */
153 : static const struct {
154 : uint32_t right_mask;
155 : const char *name;
156 : const char *description;
157 : } rights[] = {
158 : {LSA_POLICY_MODE_INTERACTIVE,
159 : "SeInteractiveLogonRight",
160 : "Interactive logon"},
161 :
162 : {LSA_POLICY_MODE_NETWORK,
163 : "SeNetworkLogonRight",
164 : "Network logon"},
165 :
166 : {LSA_POLICY_MODE_REMOTE_INTERACTIVE,
167 : "SeRemoteInteractiveLogonRight",
168 : "Remote Interactive logon"}
169 : };
170 :
171 : /*
172 : return a privilege mask given a privilege id
173 : */
174 1295199 : uint64_t sec_privilege_mask(enum sec_privilege privilege)
175 : {
176 : int i;
177 11770723 : for (i=0;i<ARRAY_SIZE(privs);i++) {
178 11770723 : if (privs[i].luid == privilege) {
179 1295199 : return privs[i].privilege_mask;
180 : }
181 : }
182 :
183 0 : return 0;
184 : }
185 :
186 : /***************************************************************************
187 : put all valid privileges into a mask
188 : ****************************************************************************/
189 :
190 119 : void se_priv_put_all_privileges(uint64_t *privilege_mask)
191 : {
192 : int i;
193 :
194 119 : *privilege_mask = 0;
195 3094 : for ( i=0; i<ARRAY_SIZE(privs); i++ ) {
196 2975 : *privilege_mask |= privs[i].privilege_mask;
197 : }
198 119 : }
199 :
200 : /*********************************************************************
201 : Lookup the uint64_t bitmask value for a privilege name
202 : *********************************************************************/
203 :
204 87 : bool se_priv_from_name( const char *name, uint64_t *privilege_mask )
205 : {
206 : int i;
207 363 : for ( i=0; i<ARRAY_SIZE(privs); i++ ) {
208 362 : if ( strequal( privs[i].name, name ) ) {
209 86 : *privilege_mask = privs[i].privilege_mask;
210 86 : return true;
211 : }
212 : }
213 :
214 1 : return false;
215 : }
216 :
217 18 : const char* get_privilege_dispname( const char *name )
218 : {
219 : int i;
220 :
221 18 : if (!name) {
222 0 : return NULL;
223 : }
224 :
225 90 : for ( i=0; i<ARRAY_SIZE(privs); i++ ) {
226 90 : if ( strequal( privs[i].name, name ) ) {
227 18 : return privs[i].description;
228 : }
229 : }
230 :
231 0 : return NULL;
232 : }
233 :
234 : /*******************************************************************
235 : return the number of elements in the 'short' privlege array (traditional source3 behaviour)
236 : *******************************************************************/
237 :
238 2 : int num_privileges_in_short_list( void )
239 : {
240 2 : return NUM_SHORT_LIST_PRIVS;
241 : }
242 :
243 : /****************************************************************************
244 : add a privilege to a privilege array
245 : ****************************************************************************/
246 :
247 154 : static bool privilege_set_add(PRIVILEGE_SET *priv_set, struct lsa_LUIDAttribute set)
248 : {
249 : struct lsa_LUIDAttribute *new_set;
250 :
251 : /* we can allocate memory to add the new privilege */
252 :
253 154 : new_set = talloc_realloc(priv_set->mem_ctx, priv_set->set, struct lsa_LUIDAttribute, priv_set->count + 1);
254 154 : if ( !new_set ) {
255 0 : DEBUG(0,("privilege_set_add: failed to allocate memory!\n"));
256 0 : return false;
257 : }
258 :
259 154 : new_set[priv_set->count].luid.high = set.luid.high;
260 154 : new_set[priv_set->count].luid.low = set.luid.low;
261 154 : new_set[priv_set->count].attribute = set.attribute;
262 :
263 154 : priv_set->count++;
264 154 : priv_set->set = new_set;
265 :
266 154 : return true;
267 : }
268 :
269 : /*******************************************************************
270 : *******************************************************************/
271 :
272 40 : bool se_priv_to_privilege_set( PRIVILEGE_SET *set, uint64_t privilege_mask )
273 : {
274 : int i;
275 : struct lsa_LUIDAttribute luid;
276 :
277 40 : luid.attribute = 0;
278 40 : luid.luid.high = 0;
279 :
280 1040 : for ( i=0; i<ARRAY_SIZE(privs); i++ ) {
281 1000 : if ((privilege_mask & privs[i].privilege_mask) == 0)
282 846 : continue;
283 :
284 154 : luid.luid.high = 0;
285 154 : luid.luid.low = privs[i].luid;
286 :
287 154 : if ( !privilege_set_add( set, luid ) )
288 0 : return false;
289 : }
290 :
291 40 : return true;
292 : }
293 :
294 : /*******************************************************************
295 : *******************************************************************/
296 :
297 4 : bool privilege_set_to_se_priv( uint64_t *privilege_mask, struct lsa_PrivilegeSet *privset )
298 : {
299 : uint32_t i;
300 :
301 4 : ZERO_STRUCTP( privilege_mask );
302 :
303 8 : for ( i=0; i<privset->count; i++ ) {
304 : uint64_t r;
305 :
306 : /* sanity check for invalid privilege. we really
307 : only care about the low 32 bits */
308 :
309 4 : if ( privset->set[i].luid.high != 0 )
310 0 : return false;
311 :
312 4 : r = sec_privilege_mask(privset->set[i].luid.low);
313 4 : if (r) {
314 4 : *privilege_mask |= r;
315 : }
316 : }
317 :
318 4 : return true;
319 : }
320 :
321 : /*
322 : map a privilege id to the wire string constant
323 : */
324 573 : const char *sec_privilege_name(enum sec_privilege privilege)
325 : {
326 : int i;
327 5924 : for (i=0;i<ARRAY_SIZE(privs);i++) {
328 5924 : if (privs[i].luid == privilege) {
329 573 : return privs[i].name;
330 : }
331 : }
332 0 : return NULL;
333 : }
334 :
335 : /*
336 : map a privilege id to a privilege display name. Return NULL if not found
337 :
338 : TODO: this should use language mappings
339 : */
340 125 : const char *sec_privilege_display_name(enum sec_privilege privilege, uint16_t *language)
341 : {
342 : int i;
343 1625 : for (i=0;i<ARRAY_SIZE(privs);i++) {
344 1625 : if (privs[i].luid == privilege) {
345 125 : return privs[i].description;
346 : }
347 : }
348 0 : return NULL;
349 : }
350 :
351 : /*
352 : map a privilege name to a privilege id. Return SEC_PRIV_INVALID if not found
353 : */
354 712357 : enum sec_privilege sec_privilege_id(const char *name)
355 : {
356 : int i;
357 11785151 : for (i=0;i<ARRAY_SIZE(privs);i++) {
358 11670932 : if (strcasecmp(privs[i].name, name) == 0) {
359 598138 : return privs[i].luid;
360 : }
361 : }
362 112080 : return SEC_PRIV_INVALID;
363 : }
364 :
365 : /*
366 : map a 'right' name to it's bitmap value. Return 0 if not found
367 : */
368 114403 : uint32_t sec_right_bit(const char *name)
369 : {
370 : int i;
371 262731 : for (i=0;i<ARRAY_SIZE(rights);i++) {
372 262559 : if (strcasecmp(rights[i].name, name) == 0) {
373 114231 : return rights[i].right_mask;
374 : }
375 : }
376 172 : return 0;
377 : }
378 :
379 : /*
380 : assist in walking the table of privileges - return the LUID (low 32 bits) by index
381 : */
382 148 : enum sec_privilege sec_privilege_from_index(int idx)
383 : {
384 148 : if (idx >= 0 && idx<ARRAY_SIZE(privs)) {
385 143 : return privs[idx].luid;
386 : }
387 5 : return SEC_PRIV_INVALID;
388 : }
389 :
390 : /*
391 : assist in walking the table of privileges - return the string constant by index
392 : */
393 18 : const char *sec_privilege_name_from_index(int idx)
394 : {
395 18 : if (idx >= 0 && idx<ARRAY_SIZE(privs)) {
396 18 : return privs[idx].name;
397 : }
398 0 : return NULL;
399 : }
400 :
401 :
402 :
403 : /*
404 : return true if a security_token has a particular privilege bit set
405 : */
406 696604 : bool security_token_has_privilege(const struct security_token *token, enum sec_privilege privilege)
407 : {
408 : uint64_t mask;
409 :
410 696604 : if (!token) {
411 0 : return false;
412 : }
413 :
414 696604 : mask = sec_privilege_mask(privilege);
415 696604 : if (mask == 0) {
416 0 : return false;
417 : }
418 :
419 696604 : if (token->privilege_mask & mask) {
420 257457 : return true;
421 : }
422 434457 : return false;
423 : }
424 :
425 146 : bool security_token_system_privilege(const struct security_token *token)
426 : {
427 146 : if (token == NULL) {
428 0 : return false;
429 : }
430 :
431 146 : if (token->privilege_mask == (uint64_t)~0) {
432 146 : return true;
433 : }
434 :
435 0 : return false;
436 : }
437 :
438 : /*
439 : set a bit in the privilege mask
440 : */
441 598573 : void security_token_set_privilege(struct security_token *token, enum sec_privilege privilege)
442 : {
443 : /* Relies on the fact that an invalid privilage will return 0, so won't change this */
444 598573 : token->privilege_mask |= sec_privilege_mask(privilege);
445 598573 : }
446 :
447 : /*
448 : set a bit in the rights mask
449 : */
450 114167 : void security_token_set_right_bit(struct security_token *token, uint32_t right_bit)
451 : {
452 114167 : token->rights_mask |= right_bit;
453 114167 : }
454 :
455 387280 : void security_token_debug_privileges(int dbg_class, int dbg_lev, const struct security_token *token)
456 : {
457 387280 : DEBUGADDC(dbg_class, dbg_lev, (" Privileges (0x%16llX):\n",
458 : (unsigned long long) token->privilege_mask));
459 :
460 387280 : if (token->privilege_mask) {
461 129846 : int idx = 0;
462 129846 : int i = 0;
463 3446171 : for (idx = 0; idx<ARRAY_SIZE(privs); idx++) {
464 3316325 : if (token->privilege_mask & privs[idx].privilege_mask) {
465 2516691 : DEBUGADDC(dbg_class, dbg_lev,
466 : (" Privilege[%3lu]: %s\n", (unsigned long)i++,
467 : privs[idx].name));
468 : }
469 : }
470 : }
471 387280 : DEBUGADDC(dbg_class, dbg_lev, (" Rights (0x%16lX):\n",
472 : (unsigned long) token->rights_mask));
473 :
474 387280 : if (token->rights_mask) {
475 112906 : int idx = 0;
476 112906 : int i = 0;
477 458758 : for (idx = 0; idx<ARRAY_SIZE(rights); idx++) {
478 345852 : if (token->rights_mask & rights[idx].right_mask) {
479 317800 : DEBUGADDC(dbg_class, dbg_lev,
480 : (" Right[%3lu]: %s\n", (unsigned long)i++,
481 : rights[idx].name));
482 : }
483 : }
484 : }
485 387280 : }
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