4 * Copyright (C) 1998 Alexandre Julliard
5 * Copyright (C) 2003 Mike McCormack
6 * Copyright (C) 2005 Robert Shearman
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
37 const LUID SeIncreaseQuotaPrivilege = { 5, 0 };
38 const LUID SeSecurityPrivilege = { 8, 0 };
39 const LUID SeTakeOwnershipPrivilege = { 9, 0 };
40 const LUID SeLoadDriverPrivilege = { 10, 0 };
41 const LUID SeSystemProfilePrivilege = { 11, 0 };
42 const LUID SeSystemtimePrivilege = { 12, 0 };
43 const LUID SeProfileSingleProcessPrivilege = { 13, 0 };
44 const LUID SeIncreaseBasePriorityPrivilege = { 14, 0 };
45 const LUID SeCreatePagefilePrivilege = { 15, 0 };
46 const LUID SeBackupPrivilege = { 17, 0 };
47 const LUID SeRestorePrivilege = { 18, 0 };
48 const LUID SeShutdownPrivilege = { 19, 0 };
49 const LUID SeDebugPrivilege = { 20, 0 };
50 const LUID SeSystemEnvironmentPrivilege = { 22, 0 };
51 const LUID SeChangeNotifyPrivilege = { 23, 0 };
52 const LUID SeRemoteShutdownPrivilege = { 24, 0 };
53 const LUID SeUndockPrivilege = { 25, 0 };
54 const LUID SeManageVolumePrivilege = { 28, 0 };
55 const LUID SeImpersonatePrivilege = { 29, 0 };
56 const LUID SeCreateGlobalPrivilege = { 30, 0 };
60 struct object obj; /* object header */
61 struct list privileges; /* privileges available to the token */
68 unsigned enabled : 1; /* is the privilege currently enabled? */
69 unsigned def : 1; /* is the privilege enabled by default? */
72 static void token_dump( struct object *obj, int verbose );
73 static void token_destroy( struct object *obj );
75 static const struct object_ops token_ops =
77 sizeof(struct token), /* size */
78 token_dump, /* dump */
79 no_add_queue, /* add_queue */
80 NULL, /* remove_queue */
83 no_signal, /* signal */
84 no_get_fd, /* get_fd */
85 token_destroy /* destroy */
89 static void token_dump( struct object *obj, int verbose )
91 fprintf( stderr, "Security token\n" );
94 static inline int is_equal_luid( const LUID *luid1, const LUID *luid2 )
96 return (luid1->LowPart == luid2->LowPart && luid1->HighPart == luid2->HighPart);
99 static inline void luid_and_attr_from_privilege( LUID_AND_ATTRIBUTES *out, const struct privilege *in)
101 out->Luid = in->luid;
103 (in->enabled ? SE_PRIVILEGE_ENABLED : 0) |
104 (in->def ? SE_PRIVILEGE_ENABLED_BY_DEFAULT : 0);
107 static struct privilege *privilege_add( struct token *token, const LUID *luid, int enabled )
109 struct privilege *privilege = mem_alloc( sizeof(*privilege) );
112 privilege->luid = *luid;
113 privilege->def = privilege->enabled = (enabled != 0);
114 list_add_tail( &token->privileges, &privilege->entry );
119 static void privilege_remove( struct privilege *privilege )
121 list_remove( &privilege->entry );
125 static void token_destroy( struct object *obj )
128 struct list *cursor, *cursor_next;
130 assert( obj->ops == &token_ops );
131 token = (struct token *)obj;
133 LIST_FOR_EACH_SAFE( cursor, cursor_next, &token->privileges )
135 struct privilege *privilege = LIST_ENTRY( cursor, struct privilege, entry );
136 privilege_remove( privilege );
140 static struct token *create_token( const LUID_AND_ATTRIBUTES *privs, unsigned int priv_count )
142 struct token *token = alloc_object( &token_ops );
146 list_init( &token->privileges );
147 for (i = 0; i < priv_count; i++)
149 /* note: we don't check uniqueness: the caller must make sure
150 * privs doesn't contain any duplicate luids */
151 if (!privilege_add( token, &privs[i].Luid,
152 privs[i].Attributes & SE_PRIVILEGE_ENABLED ))
154 release_object( token );
162 struct token *token_create_admin( void )
164 const LUID_AND_ATTRIBUTES admin_privs[] =
166 { SeChangeNotifyPrivilege , SE_PRIVILEGE_ENABLED },
167 { SeSecurityPrivilege , 0 },
168 { SeBackupPrivilege , 0 },
169 { SeRestorePrivilege , 0 },
170 { SeSystemtimePrivilege , 0 },
171 { SeShutdownPrivilege , 0 },
172 { SeRemoteShutdownPrivilege , 0 },
173 { SeTakeOwnershipPrivilege , 0 },
174 { SeDebugPrivilege , 0 },
175 { SeSystemEnvironmentPrivilege , 0 },
176 { SeSystemProfilePrivilege , 0 },
177 { SeProfileSingleProcessPrivilege, 0 },
178 { SeIncreaseBasePriorityPrivilege, 0 },
179 { SeLoadDriverPrivilege , 0 },
180 { SeCreatePagefilePrivilege , 0 },
181 { SeIncreaseQuotaPrivilege , 0 },
182 { SeUndockPrivilege , 0 },
183 { SeManageVolumePrivilege , 0 },
184 { SeImpersonatePrivilege , SE_PRIVILEGE_ENABLED },
185 { SeCreateGlobalPrivilege , SE_PRIVILEGE_ENABLED },
187 return create_token( admin_privs, sizeof(admin_privs)/sizeof(admin_privs[0]) );
190 static struct privilege *token_find_privilege( struct token *token, const LUID *luid, int enabled_only)
192 struct privilege *privilege;
193 LIST_FOR_EACH_ENTRY( privilege, &token->privileges, struct privilege, entry )
195 if (is_equal_luid( luid, &privilege->luid ))
197 if (enabled_only && !privilege->enabled)
205 static unsigned int token_adjust_privileges( struct token *token, const LUID_AND_ATTRIBUTES *privs,
206 unsigned int count, LUID_AND_ATTRIBUTES *mod_privs,
207 unsigned int mod_privs_count)
210 unsigned int modified_count = 0;
212 for (i = 0; i < count; i++)
214 struct privilege *privilege =
215 token_find_privilege( token, &privs[i].Luid, FALSE );
218 set_error( STATUS_NOT_ALL_ASSIGNED );
222 if (privs[i].Attributes & SE_PRIVILEGE_REMOVE)
223 privilege_remove( privilege );
226 /* save previous state for caller */
229 luid_and_attr_from_privilege(mod_privs, privilege);
235 if (privs[i].Attributes & SE_PRIVILEGE_ENABLED)
236 privilege->enabled = TRUE;
238 privilege->enabled = FALSE;
241 return modified_count;
244 static void token_disable_privileges( struct token *token )
246 struct privilege *privilege;
247 LIST_FOR_EACH_ENTRY( privilege, &token->privileges, struct privilege, entry )
248 privilege->enabled = FALSE;
251 int token_check_privileges( struct token *token, int all_required,
252 const LUID_AND_ATTRIBUTES *reqprivs,
253 unsigned int count, LUID_AND_ATTRIBUTES *usedprivs)
256 unsigned int enabled_count = 0;
258 for (i = 0; i < count; i++)
260 struct privilege *privilege =
261 token_find_privilege( token, &reqprivs[i].Luid, TRUE );
264 usedprivs[i] = reqprivs[i];
266 if (privilege && privilege->enabled)
270 usedprivs[i].Attributes |= SE_PRIVILEGE_USED_FOR_ACCESS;
275 return (enabled_count == count);
277 return (enabled_count > 0);
280 /* open a security token */
281 DECL_HANDLER(open_token)
283 if( req->flags & OPEN_TOKEN_THREAD )
285 struct thread *thread = get_thread_from_handle( req->handle, 0 );
289 reply->token = alloc_handle( current->process, thread->token, TOKEN_ALL_ACCESS, 0);
291 set_error(STATUS_NO_TOKEN);
292 release_object( thread );
297 struct process *process = get_process_from_handle( req->handle, 0 );
301 reply->token = alloc_handle( current->process, process->token, TOKEN_ALL_ACCESS, 0);
303 set_error(STATUS_NO_TOKEN);
304 release_object( process );
309 /* adjust the privileges held by a token */
310 DECL_HANDLER(adjust_token_privileges)
313 unsigned int access = TOKEN_ADJUST_PRIVILEGES;
315 if (req->get_modified_state) access |= TOKEN_QUERY;
317 if ((token = (struct token *)get_handle_obj( current->process, req->handle,
318 access, &token_ops )))
320 const LUID_AND_ATTRIBUTES *privs = get_req_data();
321 LUID_AND_ATTRIBUTES *modified_privs = NULL;
322 unsigned int priv_count = get_req_data_size() / sizeof(LUID_AND_ATTRIBUTES);
323 unsigned int modified_priv_count = 0;
325 if (req->get_modified_state && !req->disable_all)
328 /* count modified privs */
329 for (i = 0; i < priv_count; i++)
331 struct privilege *privilege =
332 token_find_privilege( token, &privs[i].Luid, FALSE );
333 if (privilege && req->get_modified_state)
334 modified_priv_count++;
336 reply->len = modified_priv_count;
337 modified_priv_count = min( modified_priv_count, get_reply_max_size() / sizeof(*modified_privs) );
338 if (modified_priv_count)
339 modified_privs = set_reply_data_size( modified_priv_count * sizeof(*modified_privs) );
341 reply->len = modified_priv_count * sizeof(*modified_privs);
343 if (req->disable_all)
344 token_disable_privileges( token );
346 modified_priv_count = token_adjust_privileges( token, privs,
347 priv_count, modified_privs, modified_priv_count );
349 release_object( token );
353 /* retrieves the list of privileges that may be held be the token */
354 DECL_HANDLER(get_token_privileges)
358 if ((token = (struct token *)get_handle_obj( current->process, req->handle,
363 LUID_AND_ATTRIBUTES *privs;
364 struct privilege *privilege;
366 LIST_FOR_EACH_ENTRY( privilege, &token->privileges, struct privilege, entry )
369 reply->len = priv_count * sizeof(*privs);
370 if (reply->len <= get_reply_max_size())
372 privs = set_reply_data_size( priv_count * sizeof(*privs) );
376 LIST_FOR_EACH_ENTRY( privilege, &token->privileges, struct privilege, entry )
378 luid_and_attr_from_privilege( &privs[i], privilege );
384 set_error(STATUS_BUFFER_TOO_SMALL);
386 release_object( token );
390 /* creates a duplicate of the token */
391 DECL_HANDLER(duplicate_token)
393 struct token *src_token;
394 if ((src_token = (struct token *)get_handle_obj( current->process, req->handle,
398 /* FIXME: use req->primary and req->impersonation_level */
399 struct token *token = create_token( NULL, 0 );
402 struct privilege *privilege;
405 LIST_FOR_EACH_ENTRY( privilege, &src_token->privileges, struct privilege, entry )
406 privilege_add( token, &privilege->luid, privilege->enabled );
408 access = req->access;
409 if (access & MAXIMUM_ALLOWED) access = TOKEN_ALL_ACCESS; /* FIXME: needs general solution */
410 reply->new_handle = alloc_handle( current->process, token, access, req->inherit);
411 release_object( token );
413 release_object( src_token );
417 /* checks the specified privileges are held by the token */
418 DECL_HANDLER(check_token_privileges)
422 if ((token = (struct token *)get_handle_obj( current->process, req->handle,
426 unsigned int count = get_req_data_size() / sizeof(LUID_AND_ATTRIBUTES);
427 if (get_reply_max_size() >= count * sizeof(LUID_AND_ATTRIBUTES))
429 LUID_AND_ATTRIBUTES *usedprivs = set_reply_data_size( count * sizeof(*usedprivs) );
430 reply->has_privileges = token_check_privileges( token, req->all_required, get_req_data(), count, usedprivs );
433 set_error( STATUS_BUFFER_OVERFLOW );
434 release_object( token );