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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
32 #define WIN32_NO_STATUS
42 #include "wine/unicode.h"
44 #define MAX_SUBAUTH_COUNT 1
46 const LUID SeIncreaseQuotaPrivilege
= { 5, 0 };
47 const LUID SeSecurityPrivilege
= { 8, 0 };
48 const LUID SeTakeOwnershipPrivilege
= { 9, 0 };
49 const LUID SeLoadDriverPrivilege
= { 10, 0 };
50 const LUID SeSystemProfilePrivilege
= { 11, 0 };
51 const LUID SeSystemtimePrivilege
= { 12, 0 };
52 const LUID SeProfileSingleProcessPrivilege
= { 13, 0 };
53 const LUID SeIncreaseBasePriorityPrivilege
= { 14, 0 };
54 const LUID SeCreatePagefilePrivilege
= { 15, 0 };
55 const LUID SeBackupPrivilege
= { 17, 0 };
56 const LUID SeRestorePrivilege
= { 18, 0 };
57 const LUID SeShutdownPrivilege
= { 19, 0 };
58 const LUID SeDebugPrivilege
= { 20, 0 };
59 const LUID SeSystemEnvironmentPrivilege
= { 22, 0 };
60 const LUID SeChangeNotifyPrivilege
= { 23, 0 };
61 const LUID SeRemoteShutdownPrivilege
= { 24, 0 };
62 const LUID SeUndockPrivilege
= { 25, 0 };
63 const LUID SeManageVolumePrivilege
= { 28, 0 };
64 const LUID SeImpersonatePrivilege
= { 29, 0 };
65 const LUID SeCreateGlobalPrivilege
= { 30, 0 };
67 #define SID_N(n) struct /* same fields as struct SID */ \
70 BYTE SubAuthorityCount; \
71 SID_IDENTIFIER_AUTHORITY IdentifierAuthority; \
72 DWORD SubAuthority[n]; \
75 static const SID world_sid
= { SID_REVISION
, 1, { SECURITY_WORLD_SID_AUTHORITY
}, { SECURITY_WORLD_RID
} };
76 static const SID local_sid
= { SID_REVISION
, 1, { SECURITY_LOCAL_SID_AUTHORITY
}, { SECURITY_LOCAL_RID
} };
77 static const SID interactive_sid
= { SID_REVISION
, 1, { SECURITY_NT_AUTHORITY
}, { SECURITY_INTERACTIVE_RID
} };
78 static const SID anonymous_logon_sid
= { SID_REVISION
, 1, { SECURITY_NT_AUTHORITY
}, { SECURITY_ANONYMOUS_LOGON_RID
} };
79 static const SID authenticated_user_sid
= { SID_REVISION
, 1, { SECURITY_NT_AUTHORITY
}, { SECURITY_AUTHENTICATED_USER_RID
} };
80 static const SID local_system_sid
= { SID_REVISION
, 1, { SECURITY_NT_AUTHORITY
}, { SECURITY_LOCAL_SYSTEM_RID
} };
81 static const SID high_label_sid
= { SID_REVISION
, 1, { SECURITY_MANDATORY_LABEL_AUTHORITY
}, { SECURITY_MANDATORY_HIGH_RID
} };
82 static const SID_N(5) local_user_sid
= { SID_REVISION
, 5, { SECURITY_NT_AUTHORITY
}, { SECURITY_NT_NON_UNIQUE
, 0, 0, 0, 1000 } };
83 static const SID_N(2) builtin_admins_sid
= { SID_REVISION
, 2, { SECURITY_NT_AUTHORITY
}, { SECURITY_BUILTIN_DOMAIN_RID
, DOMAIN_ALIAS_RID_ADMINS
} };
84 static const SID_N(2) builtin_users_sid
= { SID_REVISION
, 2, { SECURITY_NT_AUTHORITY
}, { SECURITY_BUILTIN_DOMAIN_RID
, DOMAIN_ALIAS_RID_USERS
} };
85 static const SID_N(3) builtin_logon_sid
= { SID_REVISION
, 3, { SECURITY_NT_AUTHORITY
}, { SECURITY_LOGON_IDS_RID
, 0, 0 } };
86 static const SID_N(5) domain_users_sid
= { SID_REVISION
, 5, { SECURITY_NT_AUTHORITY
}, { SECURITY_NT_NON_UNIQUE
, 0, 0, 0, DOMAIN_GROUP_RID_USERS
} };
88 const PSID security_world_sid
= (PSID
)&world_sid
;
89 static const PSID security_local_sid
= (PSID
)&local_sid
;
90 static const PSID security_interactive_sid
= (PSID
)&interactive_sid
;
91 static const PSID security_authenticated_user_sid
= (PSID
)&authenticated_user_sid
;
92 const PSID security_local_system_sid
= (PSID
)&local_system_sid
;
93 const PSID security_local_user_sid
= (PSID
)&local_user_sid
;
94 const PSID security_builtin_admins_sid
= (PSID
)&builtin_admins_sid
;
95 const PSID security_builtin_users_sid
= (PSID
)&builtin_users_sid
;
96 const PSID security_domain_users_sid
= (PSID
)&domain_users_sid
;
97 const PSID security_high_label_sid
= (PSID
)&high_label_sid
;
99 static luid_t prev_luid_value
= { 1000, 0 };
103 struct object obj
; /* object header */
104 luid_t token_id
; /* system-unique id of token */
105 luid_t modified_id
; /* new id allocated every time token is modified */
106 struct list privileges
; /* privileges available to the token */
107 struct list groups
; /* groups that the user of this token belongs to (sid_and_attributes) */
108 SID
*user
; /* SID of user this token represents */
109 SID
*owner
; /* SID of owner (points to user or one of groups) */
110 SID
*primary_group
; /* SID of user's primary group (points to one of groups) */
111 unsigned primary
; /* is this a primary or impersonation token? */
112 ACL
*default_dacl
; /* the default DACL to assign to objects created by this user */
113 TOKEN_SOURCE source
; /* source of the token */
114 int impersonation_level
; /* impersonation level this token is capable of if non-primary token */
121 unsigned enabled
: 1; /* is the privilege currently enabled? */
122 unsigned def
: 1; /* is the privilege enabled by default? */
128 unsigned enabled
: 1; /* is the sid currently enabled? */
129 unsigned def
: 1; /* is the sid enabled by default? */
130 unsigned logon
: 1; /* is this a logon sid? */
131 unsigned mandatory
: 1; /* is this sid always enabled? */
132 unsigned owner
: 1; /* can this sid be an owner of an object? */
133 unsigned resource
: 1; /* is this a domain-local group? */
134 unsigned deny_only
: 1; /* is this a sid that should be use for denying only? */
138 static void token_dump( struct object
*obj
, int verbose
);
139 static struct object_type
*token_get_type( struct object
*obj
);
140 static unsigned int token_map_access( struct object
*obj
, unsigned int access
);
141 static void token_destroy( struct object
*obj
);
143 static const struct object_ops token_ops
=
145 sizeof(struct token
), /* size */
146 token_dump
, /* dump */
147 token_get_type
, /* get_type */
148 no_add_queue
, /* add_queue */
149 NULL
, /* remove_queue */
151 NULL
, /* satisfied */
152 no_signal
, /* signal */
153 no_get_fd
, /* get_fd */
154 token_map_access
, /* map_access */
155 default_get_sd
, /* get_sd */
156 default_set_sd
, /* set_sd */
157 no_lookup_name
, /* lookup_name */
158 no_link_name
, /* link_name */
159 NULL
, /* unlink_name */
160 no_open_file
, /* open_file */
161 no_kernel_obj_list
, /* get_kernel_obj_list */
162 no_close_handle
, /* close_handle */
163 token_destroy
/* destroy */
166 static void token_dump( struct object
*obj
, int verbose
)
168 struct token
*token
= (struct token
*)obj
;
169 assert( obj
->ops
== &token_ops
);
170 fprintf( stderr
, "Token id=%d.%u primary=%u impersonation level=%d\n", token
->token_id
.high_part
,
171 token
->token_id
.low_part
, token
->primary
, token
->impersonation_level
);
174 static struct object_type
*token_get_type( struct object
*obj
)
176 static const WCHAR name
[] = {'T','o','k','e','n'};
177 static const struct unicode_str str
= { name
, sizeof(name
) };
178 return get_object_type( &str
);
181 static unsigned int token_map_access( struct object
*obj
, unsigned int access
)
183 if (access
& GENERIC_READ
) access
|= TOKEN_READ
;
184 if (access
& GENERIC_WRITE
) access
|= TOKEN_WRITE
;
185 if (access
& GENERIC_EXECUTE
) access
|= STANDARD_RIGHTS_EXECUTE
;
186 if (access
& GENERIC_ALL
) access
|= TOKEN_ALL_ACCESS
;
187 return access
& ~(GENERIC_READ
| GENERIC_WRITE
| GENERIC_EXECUTE
| GENERIC_ALL
);
190 static SID
*security_sid_alloc( const SID_IDENTIFIER_AUTHORITY
*idauthority
, int subauthcount
, const unsigned int subauth
[] )
193 SID
*sid
= mem_alloc( FIELD_OFFSET(SID
, SubAuthority
[subauthcount
]) );
194 if (!sid
) return NULL
;
195 sid
->Revision
= SID_REVISION
;
196 sid
->SubAuthorityCount
= subauthcount
;
197 sid
->IdentifierAuthority
= *idauthority
;
198 for (i
= 0; i
< subauthcount
; i
++)
199 sid
->SubAuthority
[i
] = subauth
[i
];
203 void security_set_thread_token( struct thread
*thread
, obj_handle_t handle
)
208 release_object( thread
->token
);
209 thread
->token
= NULL
;
213 struct token
*token
= (struct token
*)get_handle_obj( current
->process
,
220 release_object( thread
->token
);
221 thread
->token
= token
;
226 const SID
*security_unix_uid_to_sid( uid_t uid
)
228 /* very simple mapping: either the current user or not the current user */
230 return (const SID
*)&local_user_sid
;
232 return &anonymous_logon_sid
;
235 static int acl_is_valid( const ACL
*acl
, data_size_t size
)
238 const ACE_HEADER
*ace
;
240 if (size
< sizeof(ACL
))
243 size
= min(size
, MAX_ACL_LEN
);
247 ace
= (const ACE_HEADER
*)(acl
+ 1);
248 for (i
= 0; i
< acl
->AceCount
; i
++)
251 data_size_t sid_size
;
253 if (size
< sizeof(ACE_HEADER
))
255 if (size
< ace
->AceSize
)
257 size
-= ace
->AceSize
;
258 switch (ace
->AceType
)
260 case ACCESS_DENIED_ACE_TYPE
:
261 sid
= (const SID
*)&((const ACCESS_DENIED_ACE
*)ace
)->SidStart
;
262 sid_size
= ace
->AceSize
- FIELD_OFFSET(ACCESS_DENIED_ACE
, SidStart
);
264 case ACCESS_ALLOWED_ACE_TYPE
:
265 sid
= (const SID
*)&((const ACCESS_ALLOWED_ACE
*)ace
)->SidStart
;
266 sid_size
= ace
->AceSize
- FIELD_OFFSET(ACCESS_ALLOWED_ACE
, SidStart
);
268 case SYSTEM_AUDIT_ACE_TYPE
:
269 sid
= (const SID
*)&((const SYSTEM_AUDIT_ACE
*)ace
)->SidStart
;
270 sid_size
= ace
->AceSize
- FIELD_OFFSET(SYSTEM_AUDIT_ACE
, SidStart
);
272 case SYSTEM_ALARM_ACE_TYPE
:
273 sid
= (const SID
*)&((const SYSTEM_ALARM_ACE
*)ace
)->SidStart
;
274 sid_size
= ace
->AceSize
- FIELD_OFFSET(SYSTEM_ALARM_ACE
, SidStart
);
276 case SYSTEM_MANDATORY_LABEL_ACE_TYPE
:
277 sid
= (const SID
*)&((const SYSTEM_MANDATORY_LABEL_ACE
*)ace
)->SidStart
;
278 sid_size
= ace
->AceSize
- FIELD_OFFSET(SYSTEM_MANDATORY_LABEL_ACE
, SidStart
);
283 if (sid_size
< FIELD_OFFSET(SID
, SubAuthority
[0]) || sid_size
< security_sid_len( sid
))
285 ace
= ace_next( ace
);
290 /* checks whether all members of a security descriptor fit inside the size
291 * of memory specified */
292 int sd_is_valid( const struct security_descriptor
*sd
, data_size_t size
)
294 size_t offset
= sizeof(struct security_descriptor
);
304 if ((sd
->owner_len
>= FIELD_OFFSET(SID
, SubAuthority
[255])) ||
305 (offset
+ sd
->owner_len
> size
))
307 owner
= sd_get_owner( sd
);
310 if ((sd
->owner_len
< sizeof(SID
)) || (security_sid_len( owner
) > sd
->owner_len
))
313 offset
+= sd
->owner_len
;
315 if ((sd
->group_len
>= FIELD_OFFSET(SID
, SubAuthority
[255])) ||
316 (offset
+ sd
->group_len
> size
))
318 group
= sd_get_group( sd
);
321 if ((sd
->group_len
< sizeof(SID
)) || (security_sid_len( group
) > sd
->group_len
))
324 offset
+= sd
->group_len
;
326 if ((sd
->sacl_len
>= MAX_ACL_LEN
) || (offset
+ sd
->sacl_len
> size
))
328 sacl
= sd_get_sacl( sd
, &dummy
);
329 if (sacl
&& !acl_is_valid( sacl
, sd
->sacl_len
))
331 offset
+= sd
->sacl_len
;
333 if ((sd
->dacl_len
>= MAX_ACL_LEN
) || (offset
+ sd
->dacl_len
> size
))
335 dacl
= sd_get_dacl( sd
, &dummy
);
336 if (dacl
&& !acl_is_valid( dacl
, sd
->dacl_len
))
338 offset
+= sd
->dacl_len
;
343 /* extract security labels from SACL */
344 ACL
*extract_security_labels( const ACL
*sacl
)
346 size_t size
= sizeof(ACL
);
347 const ACE_HEADER
*ace
;
348 ACE_HEADER
*label_ace
;
349 unsigned int i
, count
= 0;
352 ace
= (const ACE_HEADER
*)(sacl
+ 1);
353 for (i
= 0; i
< sacl
->AceCount
; i
++, ace
= ace_next( ace
))
355 if (ace
->AceType
== SYSTEM_MANDATORY_LABEL_ACE_TYPE
)
357 size
+= ace
->AceSize
;
362 label_acl
= mem_alloc( size
);
363 if (!label_acl
) return NULL
;
365 label_acl
->AclRevision
= sacl
->AclRevision
;
367 label_acl
->AclSize
= size
;
368 label_acl
->AceCount
= count
;
370 label_ace
= (ACE_HEADER
*)(label_acl
+ 1);
372 ace
= (const ACE_HEADER
*)(sacl
+ 1);
373 for (i
= 0; i
< sacl
->AceCount
; i
++, ace
= ace_next( ace
))
375 if (ace
->AceType
== SYSTEM_MANDATORY_LABEL_ACE_TYPE
)
377 memcpy( label_ace
, ace
, ace
->AceSize
);
378 label_ace
= (ACE_HEADER
*)ace_next( label_ace
);
384 /* replace security labels in an existing SACL */
385 ACL
*replace_security_labels( const ACL
*old_sacl
, const ACL
*new_sacl
)
387 const ACE_HEADER
*ace
;
388 ACE_HEADER
*replaced_ace
;
389 size_t size
= sizeof(ACL
);
390 unsigned int i
, count
= 0;
391 BYTE revision
= ACL_REVISION
;
396 revision
= max( revision
, old_sacl
->AclRevision
);
397 ace
= (const ACE_HEADER
*)(old_sacl
+ 1);
398 for (i
= 0; i
< old_sacl
->AceCount
; i
++, ace
= ace_next( ace
))
400 if (ace
->AceType
== SYSTEM_MANDATORY_LABEL_ACE_TYPE
) continue;
401 size
+= ace
->AceSize
;
408 revision
= max( revision
, new_sacl
->AclRevision
);
409 ace
= (const ACE_HEADER
*)(new_sacl
+ 1);
410 for (i
= 0; i
< new_sacl
->AceCount
; i
++, ace
= ace_next( ace
))
412 if (ace
->AceType
!= SYSTEM_MANDATORY_LABEL_ACE_TYPE
) continue;
413 size
+= ace
->AceSize
;
418 replaced_acl
= mem_alloc( size
);
419 if (!replaced_acl
) return NULL
;
421 replaced_acl
->AclRevision
= revision
;
422 replaced_acl
->Sbz1
= 0;
423 replaced_acl
->AclSize
= size
;
424 replaced_acl
->AceCount
= count
;
425 replaced_acl
->Sbz2
= 0;
426 replaced_ace
= (ACE_HEADER
*)(replaced_acl
+ 1);
430 ace
= (const ACE_HEADER
*)(old_sacl
+ 1);
431 for (i
= 0; i
< old_sacl
->AceCount
; i
++, ace
= ace_next( ace
))
433 if (ace
->AceType
== SYSTEM_MANDATORY_LABEL_ACE_TYPE
) continue;
434 memcpy( replaced_ace
, ace
, ace
->AceSize
);
435 replaced_ace
= (ACE_HEADER
*)ace_next( replaced_ace
);
441 ace
= (const ACE_HEADER
*)(new_sacl
+ 1);
442 for (i
= 0; i
< new_sacl
->AceCount
; i
++, ace
= ace_next( ace
))
444 if (ace
->AceType
!= SYSTEM_MANDATORY_LABEL_ACE_TYPE
) continue;
445 memcpy( replaced_ace
, ace
, ace
->AceSize
);
446 replaced_ace
= (ACE_HEADER
*)ace_next( replaced_ace
);
453 /* maps from generic rights to specific rights as given by a mapping */
454 static inline void map_generic_mask(unsigned int *mask
, const GENERIC_MAPPING
*mapping
)
456 if (*mask
& GENERIC_READ
) *mask
|= mapping
->GenericRead
;
457 if (*mask
& GENERIC_WRITE
) *mask
|= mapping
->GenericWrite
;
458 if (*mask
& GENERIC_EXECUTE
) *mask
|= mapping
->GenericExecute
;
459 if (*mask
& GENERIC_ALL
) *mask
|= mapping
->GenericAll
;
463 static inline int is_equal_luid( const LUID
*luid1
, const LUID
*luid2
)
465 return (luid1
->LowPart
== luid2
->LowPart
&& luid1
->HighPart
== luid2
->HighPart
);
468 static inline void allocate_luid( luid_t
*luid
)
470 prev_luid_value
.low_part
++;
471 *luid
= prev_luid_value
;
474 DECL_HANDLER( allocate_locally_unique_id
)
476 allocate_luid( &reply
->luid
);
479 static inline void luid_and_attr_from_privilege( LUID_AND_ATTRIBUTES
*out
, const struct privilege
*in
)
481 out
->Luid
= in
->luid
;
483 (in
->enabled
? SE_PRIVILEGE_ENABLED
: 0) |
484 (in
->def
? SE_PRIVILEGE_ENABLED_BY_DEFAULT
: 0);
487 static struct privilege
*privilege_add( struct token
*token
, const LUID
*luid
, int enabled
)
489 struct privilege
*privilege
= mem_alloc( sizeof(*privilege
) );
492 privilege
->luid
= *luid
;
493 privilege
->def
= privilege
->enabled
= (enabled
!= 0);
494 list_add_tail( &token
->privileges
, &privilege
->entry
);
499 static inline void privilege_remove( struct privilege
*privilege
)
501 list_remove( &privilege
->entry
);
505 static void token_destroy( struct object
*obj
)
508 struct list
*cursor
, *cursor_next
;
510 assert( obj
->ops
== &token_ops
);
511 token
= (struct token
*)obj
;
515 LIST_FOR_EACH_SAFE( cursor
, cursor_next
, &token
->privileges
)
517 struct privilege
*privilege
= LIST_ENTRY( cursor
, struct privilege
, entry
);
518 privilege_remove( privilege
);
521 LIST_FOR_EACH_SAFE( cursor
, cursor_next
, &token
->groups
)
523 struct group
*group
= LIST_ENTRY( cursor
, struct group
, entry
);
524 list_remove( &group
->entry
);
528 free( token
->default_dacl
);
531 /* creates a new token.
532 * groups may be NULL if group_count is 0.
533 * privs may be NULL if priv_count is 0.
534 * default_dacl may be NULL, indicating that all objects created by the user
536 * modified_id may be NULL, indicating that a new modified_id luid should be
539 static struct token
*create_token( unsigned primary
, const SID
*user
,
540 const SID_AND_ATTRIBUTES
*groups
, unsigned int group_count
,
541 const LUID_AND_ATTRIBUTES
*privs
, unsigned int priv_count
,
542 const ACL
*default_dacl
, TOKEN_SOURCE source
,
543 const luid_t
*modified_id
,
544 int impersonation_level
)
546 struct token
*token
= alloc_object( &token_ops
);
551 allocate_luid( &token
->token_id
);
553 token
->modified_id
= *modified_id
;
555 allocate_luid( &token
->modified_id
);
556 list_init( &token
->privileges
);
557 list_init( &token
->groups
);
558 token
->primary
= primary
;
559 /* primary tokens don't have impersonation levels */
561 token
->impersonation_level
= -1;
563 token
->impersonation_level
= impersonation_level
;
564 token
->default_dacl
= NULL
;
565 token
->primary_group
= NULL
;
568 token
->user
= memdup( user
, security_sid_len( user
));
571 release_object( token
);
576 for (i
= 0; i
< group_count
; i
++)
578 size_t size
= FIELD_OFFSET( struct group
, sid
.SubAuthority
[((const SID
*)groups
[i
].Sid
)->SubAuthorityCount
] );
579 struct group
*group
= mem_alloc( size
);
583 release_object( token
);
586 memcpy( &group
->sid
, groups
[i
].Sid
, security_sid_len( groups
[i
].Sid
));
587 group
->enabled
= TRUE
;
589 group
->logon
= (groups
[i
].Attributes
& SE_GROUP_LOGON_ID
) != 0;
590 group
->mandatory
= (groups
[i
].Attributes
& SE_GROUP_MANDATORY
) != 0;
591 group
->owner
= (groups
[i
].Attributes
& SE_GROUP_OWNER
) != 0;
592 group
->resource
= FALSE
;
593 group
->deny_only
= FALSE
;
594 list_add_tail( &token
->groups
, &group
->entry
);
595 /* Use first owner capable group as owner and primary group */
596 if (!token
->primary_group
&& group
->owner
)
598 token
->owner
= &group
->sid
;
599 token
->primary_group
= &group
->sid
;
603 /* copy privileges */
604 for (i
= 0; i
< priv_count
; i
++)
606 /* note: we don't check uniqueness: the caller must make sure
607 * privs doesn't contain any duplicate luids */
608 if (!privilege_add( token
, &privs
[i
].Luid
,
609 privs
[i
].Attributes
& SE_PRIVILEGE_ENABLED
))
611 release_object( token
);
618 token
->default_dacl
= memdup( default_dacl
, default_dacl
->AclSize
);
619 if (!token
->default_dacl
)
621 release_object( token
);
626 token
->source
= source
;
631 struct token
*token_duplicate( struct token
*src_token
, unsigned primary
,
632 int impersonation_level
, const struct security_descriptor
*sd
)
634 const luid_t
*modified_id
=
635 primary
|| (impersonation_level
== src_token
->impersonation_level
) ?
636 &src_token
->modified_id
: NULL
;
637 struct token
*token
= NULL
;
638 struct privilege
*privilege
;
642 (impersonation_level
< SecurityAnonymous
||
643 impersonation_level
> SecurityDelegation
||
644 (!src_token
->primary
&& (impersonation_level
> src_token
->impersonation_level
))))
646 set_error( STATUS_BAD_IMPERSONATION_LEVEL
);
650 token
= create_token( primary
, src_token
->user
, NULL
, 0,
651 NULL
, 0, src_token
->default_dacl
,
652 src_token
->source
, modified_id
,
653 impersonation_level
);
654 if (!token
) return token
;
657 token
->primary_group
= NULL
;
658 LIST_FOR_EACH_ENTRY( group
, &src_token
->groups
, struct group
, entry
)
660 size_t size
= FIELD_OFFSET( struct group
, sid
.SubAuthority
[group
->sid
.SubAuthorityCount
] );
661 struct group
*newgroup
= mem_alloc( size
);
664 release_object( token
);
667 memcpy( newgroup
, group
, size
);
668 list_add_tail( &token
->groups
, &newgroup
->entry
);
669 if (src_token
->primary_group
== &group
->sid
)
671 token
->owner
= &newgroup
->sid
;
672 token
->primary_group
= &newgroup
->sid
;
675 assert( token
->primary_group
);
677 /* copy privileges */
678 LIST_FOR_EACH_ENTRY( privilege
, &src_token
->privileges
, struct privilege
, entry
)
679 if (!privilege_add( token
, &privilege
->luid
, privilege
->enabled
))
681 release_object( token
);
685 if (sd
) default_set_sd( &token
->obj
, sd
, OWNER_SECURITY_INFORMATION
| GROUP_SECURITY_INFORMATION
|
686 DACL_SECURITY_INFORMATION
| SACL_SECURITY_INFORMATION
);
691 static ACL
*create_default_dacl( const SID
*user
)
693 ACCESS_ALLOWED_ACE
*aaa
;
696 size_t default_dacl_size
= sizeof(ACL
) +
697 2*(sizeof(ACCESS_ALLOWED_ACE
) - sizeof(DWORD
)) +
698 sizeof(local_system_sid
) +
699 security_sid_len( user
);
701 default_dacl
= mem_alloc( default_dacl_size
);
702 if (!default_dacl
) return NULL
;
704 default_dacl
->AclRevision
= ACL_REVISION
;
705 default_dacl
->Sbz1
= 0;
706 default_dacl
->AclSize
= default_dacl_size
;
707 default_dacl
->AceCount
= 2;
708 default_dacl
->Sbz2
= 0;
710 /* GENERIC_ALL for Local System */
711 aaa
= (ACCESS_ALLOWED_ACE
*)(default_dacl
+ 1);
712 aaa
->Header
.AceType
= ACCESS_ALLOWED_ACE_TYPE
;
713 aaa
->Header
.AceFlags
= 0;
714 aaa
->Header
.AceSize
= (sizeof(ACCESS_ALLOWED_ACE
) - sizeof(DWORD
)) +
715 sizeof(local_system_sid
);
716 aaa
->Mask
= GENERIC_ALL
;
717 sid
= (SID
*)&aaa
->SidStart
;
718 memcpy( sid
, &local_system_sid
, sizeof(local_system_sid
) );
720 /* GENERIC_ALL for specified user */
721 aaa
= (ACCESS_ALLOWED_ACE
*)((char *)aaa
+ aaa
->Header
.AceSize
);
722 aaa
->Header
.AceType
= ACCESS_ALLOWED_ACE_TYPE
;
723 aaa
->Header
.AceFlags
= 0;
724 aaa
->Header
.AceSize
= (sizeof(ACCESS_ALLOWED_ACE
) - sizeof(DWORD
)) + security_sid_len( user
);
725 aaa
->Mask
= GENERIC_ALL
;
726 sid
= (SID
*)&aaa
->SidStart
;
727 memcpy( sid
, user
, security_sid_len( user
));
734 SID_IDENTIFIER_AUTHORITY idauth
;
736 unsigned int subauth
[MAX_SUBAUTH_COUNT
];
739 static struct security_descriptor
*create_security_label_sd( struct token
*token
, PSID label_sid
)
741 size_t sid_len
= security_sid_len( label_sid
), sacl_size
, sd_size
;
742 SYSTEM_MANDATORY_LABEL_ACE
*smla
;
743 struct security_descriptor
*sd
;
746 sacl_size
= sizeof(ACL
) + FIELD_OFFSET(SYSTEM_MANDATORY_LABEL_ACE
, SidStart
) + sid_len
;
747 sd_size
= sizeof(struct security_descriptor
) + sacl_size
;
748 if (!(sd
= mem_alloc( sd_size
)))
751 sd
->control
= SE_SACL_PRESENT
;
754 sd
->sacl_len
= sacl_size
;
757 sacl
= (ACL
*)(sd
+ 1);
758 sacl
->AclRevision
= ACL_REVISION
;
760 sacl
->AclSize
= sacl_size
;
764 smla
= (SYSTEM_MANDATORY_LABEL_ACE
*)(sacl
+ 1);
765 smla
->Header
.AceType
= SYSTEM_MANDATORY_LABEL_ACE_TYPE
;
766 smla
->Header
.AceFlags
= 0;
767 smla
->Header
.AceSize
= FIELD_OFFSET(SYSTEM_MANDATORY_LABEL_ACE
, SidStart
) + sid_len
;
768 smla
->Mask
= SYSTEM_MANDATORY_LABEL_NO_WRITE_UP
;
769 memcpy( &smla
->SidStart
, label_sid
, sid_len
);
771 assert( sd_is_valid( sd
, sd_size
) );
775 int token_assign_label( struct token
*token
, PSID label
)
777 struct security_descriptor
*sd
;
780 if ((sd
= create_security_label_sd( token
, label
)))
782 ret
= set_sd_defaults_from_token( &token
->obj
, sd
, LABEL_SECURITY_INFORMATION
, token
);
789 struct token
*token_create_admin( void )
791 struct token
*token
= NULL
;
792 static const SID_IDENTIFIER_AUTHORITY nt_authority
= { SECURITY_NT_AUTHORITY
};
793 static const unsigned int alias_admins_subauth
[] = { SECURITY_BUILTIN_DOMAIN_RID
, DOMAIN_ALIAS_RID_ADMINS
};
794 static const unsigned int alias_users_subauth
[] = { SECURITY_BUILTIN_DOMAIN_RID
, DOMAIN_ALIAS_RID_USERS
};
795 /* on Windows, this value changes every time the user logs on */
796 static const unsigned int logon_subauth
[] = { SECURITY_LOGON_IDS_RID
, 0, 1 /* FIXME: should be randomly generated when tokens are inherited by new processes */ };
797 PSID alias_admins_sid
;
798 PSID alias_users_sid
;
800 const SID
*user_sid
= security_unix_uid_to_sid( getuid() );
801 ACL
*default_dacl
= create_default_dacl( user_sid
);
803 alias_admins_sid
= security_sid_alloc( &nt_authority
, ARRAY_SIZE( alias_admins_subauth
),
804 alias_admins_subauth
);
805 alias_users_sid
= security_sid_alloc( &nt_authority
, ARRAY_SIZE( alias_users_subauth
),
806 alias_users_subauth
);
807 logon_sid
= security_sid_alloc( &nt_authority
, ARRAY_SIZE( logon_subauth
), logon_subauth
);
809 if (alias_admins_sid
&& alias_users_sid
&& logon_sid
&& default_dacl
)
811 const LUID_AND_ATTRIBUTES admin_privs
[] =
813 { SeChangeNotifyPrivilege
, SE_PRIVILEGE_ENABLED
},
814 { SeSecurityPrivilege
, 0 },
815 { SeBackupPrivilege
, 0 },
816 { SeRestorePrivilege
, 0 },
817 { SeSystemtimePrivilege
, 0 },
818 { SeShutdownPrivilege
, 0 },
819 { SeRemoteShutdownPrivilege
, 0 },
820 { SeTakeOwnershipPrivilege
, 0 },
821 { SeDebugPrivilege
, 0 },
822 { SeSystemEnvironmentPrivilege
, 0 },
823 { SeSystemProfilePrivilege
, 0 },
824 { SeProfileSingleProcessPrivilege
, 0 },
825 { SeIncreaseBasePriorityPrivilege
, 0 },
826 { SeLoadDriverPrivilege
, SE_PRIVILEGE_ENABLED
},
827 { SeCreatePagefilePrivilege
, 0 },
828 { SeIncreaseQuotaPrivilege
, 0 },
829 { SeUndockPrivilege
, 0 },
830 { SeManageVolumePrivilege
, 0 },
831 { SeImpersonatePrivilege
, SE_PRIVILEGE_ENABLED
},
832 { SeCreateGlobalPrivilege
, SE_PRIVILEGE_ENABLED
},
834 /* note: we don't include non-builtin groups here for the user -
835 * telling us these is the job of a client-side program */
836 const SID_AND_ATTRIBUTES admin_groups
[] =
838 { security_world_sid
, SE_GROUP_ENABLED
|SE_GROUP_ENABLED_BY_DEFAULT
|SE_GROUP_MANDATORY
},
839 { security_local_sid
, SE_GROUP_ENABLED
|SE_GROUP_ENABLED_BY_DEFAULT
|SE_GROUP_MANDATORY
},
840 { security_interactive_sid
, SE_GROUP_ENABLED
|SE_GROUP_ENABLED_BY_DEFAULT
|SE_GROUP_MANDATORY
},
841 { security_authenticated_user_sid
, SE_GROUP_ENABLED
|SE_GROUP_ENABLED_BY_DEFAULT
|SE_GROUP_MANDATORY
},
842 { security_domain_users_sid
, SE_GROUP_ENABLED
|SE_GROUP_ENABLED_BY_DEFAULT
|SE_GROUP_MANDATORY
|SE_GROUP_OWNER
},
843 { alias_admins_sid
, SE_GROUP_ENABLED
|SE_GROUP_ENABLED_BY_DEFAULT
|SE_GROUP_MANDATORY
|SE_GROUP_OWNER
},
844 { alias_users_sid
, SE_GROUP_ENABLED
|SE_GROUP_ENABLED_BY_DEFAULT
|SE_GROUP_MANDATORY
},
845 { logon_sid
, SE_GROUP_ENABLED
|SE_GROUP_ENABLED_BY_DEFAULT
|SE_GROUP_MANDATORY
|SE_GROUP_LOGON_ID
},
847 static const TOKEN_SOURCE admin_source
= {"SeMgr", {0, 0}};
848 token
= create_token( TRUE
, user_sid
, admin_groups
, ARRAY_SIZE( admin_groups
),
849 admin_privs
, ARRAY_SIZE( admin_privs
), default_dacl
,
850 admin_source
, NULL
, -1 );
851 /* we really need a primary group */
852 assert( token
->primary_group
);
856 free( alias_admins_sid
);
857 free( alias_users_sid
);
858 free( default_dacl
);
863 static struct privilege
*token_find_privilege( struct token
*token
, const LUID
*luid
, int enabled_only
)
865 struct privilege
*privilege
;
866 LIST_FOR_EACH_ENTRY( privilege
, &token
->privileges
, struct privilege
, entry
)
868 if (is_equal_luid( luid
, &privilege
->luid
))
870 if (enabled_only
&& !privilege
->enabled
)
878 static unsigned int token_adjust_privileges( struct token
*token
, const LUID_AND_ATTRIBUTES
*privs
,
879 unsigned int count
, LUID_AND_ATTRIBUTES
*mod_privs
,
880 unsigned int mod_privs_count
)
882 unsigned int i
, modified_count
= 0;
884 /* mark as modified */
885 allocate_luid( &token
->modified_id
);
887 for (i
= 0; i
< count
; i
++)
889 struct privilege
*privilege
=
890 token_find_privilege( token
, &privs
[i
].Luid
, FALSE
);
893 set_error( STATUS_NOT_ALL_ASSIGNED
);
897 if (privs
[i
].Attributes
& SE_PRIVILEGE_REMOVED
)
898 privilege_remove( privilege
);
901 /* save previous state for caller */
904 luid_and_attr_from_privilege(mod_privs
, privilege
);
910 if (privs
[i
].Attributes
& SE_PRIVILEGE_ENABLED
)
911 privilege
->enabled
= TRUE
;
913 privilege
->enabled
= FALSE
;
916 return modified_count
;
919 static void token_disable_privileges( struct token
*token
)
921 struct privilege
*privilege
;
923 /* mark as modified */
924 allocate_luid( &token
->modified_id
);
926 LIST_FOR_EACH_ENTRY( privilege
, &token
->privileges
, struct privilege
, entry
)
927 privilege
->enabled
= FALSE
;
930 int token_check_privileges( struct token
*token
, int all_required
,
931 const LUID_AND_ATTRIBUTES
*reqprivs
,
932 unsigned int count
, LUID_AND_ATTRIBUTES
*usedprivs
)
934 unsigned int i
, enabled_count
= 0;
936 for (i
= 0; i
< count
; i
++)
938 struct privilege
*privilege
=
939 token_find_privilege( token
, &reqprivs
[i
].Luid
, TRUE
);
942 usedprivs
[i
] = reqprivs
[i
];
944 if (privilege
&& privilege
->enabled
)
948 usedprivs
[i
].Attributes
|= SE_PRIVILEGE_USED_FOR_ACCESS
;
953 return (enabled_count
== count
);
955 return (enabled_count
> 0);
958 int token_sid_present( struct token
*token
, const SID
*sid
, int deny
)
962 if (security_equal_sid( token
->user
, sid
)) return TRUE
;
964 LIST_FOR_EACH_ENTRY( group
, &token
->groups
, struct group
, entry
)
966 if (!group
->enabled
) continue;
967 if (group
->deny_only
&& !deny
) continue;
969 if (security_equal_sid( &group
->sid
, sid
)) return TRUE
;
975 /* Checks access to a security descriptor. 'sd' must have been validated by
976 * caller. It returns STATUS_SUCCESS if call succeeded or an error indicating
977 * the reason. 'status' parameter will indicate if access is granted or denied.
979 * If both returned value and 'status' are STATUS_SUCCESS then access is granted.
981 static unsigned int token_access_check( struct token
*token
,
982 const struct security_descriptor
*sd
,
983 unsigned int desired_access
,
984 LUID_AND_ATTRIBUTES
*privs
,
985 unsigned int *priv_count
,
986 const GENERIC_MAPPING
*mapping
,
987 unsigned int *granted_access
,
988 unsigned int *status
)
990 unsigned int current_access
= 0;
991 unsigned int denied_access
= 0;
995 const ACE_HEADER
*ace
;
998 /* assume no access rights */
1001 /* fail if desired_access contains generic rights */
1002 if (desired_access
& (GENERIC_READ
|GENERIC_WRITE
|GENERIC_EXECUTE
|GENERIC_ALL
))
1004 if (priv_count
) *priv_count
= 0;
1005 return STATUS_GENERIC_NOT_MAPPED
;
1008 dacl
= sd_get_dacl( sd
, &dacl_present
);
1009 owner
= sd_get_owner( sd
);
1010 if (!owner
|| !sd_get_group( sd
))
1012 if (priv_count
) *priv_count
= 0;
1013 return STATUS_INVALID_SECURITY_DESCR
;
1016 /* 1: Grant desired access if the object is unprotected */
1017 if (!dacl_present
|| !dacl
)
1019 if (priv_count
) *priv_count
= 0;
1020 if (desired_access
& MAXIMUM_ALLOWED
)
1021 *granted_access
= mapping
->GenericAll
;
1023 *granted_access
= desired_access
;
1024 return *status
= STATUS_SUCCESS
;
1027 /* 2: Check if caller wants access to system security part. Note: access
1028 * is only granted if specifically asked for */
1029 if (desired_access
& ACCESS_SYSTEM_SECURITY
)
1031 const LUID_AND_ATTRIBUTES security_priv
= { SeSecurityPrivilege
, 0 };
1032 LUID_AND_ATTRIBUTES retpriv
= security_priv
;
1033 if (token_check_privileges( token
, TRUE
, &security_priv
, 1, &retpriv
))
1037 /* assumes that there will only be one privilege to return */
1038 if (*priv_count
>= 1)
1046 return STATUS_BUFFER_TOO_SMALL
;
1049 current_access
|= ACCESS_SYSTEM_SECURITY
;
1050 if (desired_access
== current_access
)
1052 *granted_access
= current_access
;
1053 return *status
= STATUS_SUCCESS
;
1058 if (priv_count
) *priv_count
= 0;
1059 *status
= STATUS_PRIVILEGE_NOT_HELD
;
1060 return STATUS_SUCCESS
;
1063 else if (priv_count
) *priv_count
= 0;
1065 /* 3: Check whether the token is the owner */
1066 /* NOTE: SeTakeOwnershipPrivilege is not checked for here - it is instead
1067 * checked when a "set owner" call is made, overriding the access rights
1068 * determined here. */
1069 if (token_sid_present( token
, owner
, FALSE
))
1071 current_access
|= (READ_CONTROL
| WRITE_DAC
);
1072 if (desired_access
== current_access
)
1074 *granted_access
= current_access
;
1075 return *status
= STATUS_SUCCESS
;
1079 /* 4: Grant rights according to the DACL */
1080 ace
= (const ACE_HEADER
*)(dacl
+ 1);
1081 for (i
= 0; i
< dacl
->AceCount
; i
++, ace
= ace_next( ace
))
1083 const ACCESS_ALLOWED_ACE
*aa_ace
;
1084 const ACCESS_DENIED_ACE
*ad_ace
;
1087 if (ace
->AceFlags
& INHERIT_ONLY_ACE
)
1090 switch (ace
->AceType
)
1092 case ACCESS_DENIED_ACE_TYPE
:
1093 ad_ace
= (const ACCESS_DENIED_ACE
*)ace
;
1094 sid
= (const SID
*)&ad_ace
->SidStart
;
1095 if (token_sid_present( token
, sid
, TRUE
))
1097 unsigned int access
= ad_ace
->Mask
;
1098 map_generic_mask(&access
, mapping
);
1099 if (desired_access
& MAXIMUM_ALLOWED
)
1100 denied_access
|= access
;
1103 denied_access
|= (access
& ~current_access
);
1104 if (desired_access
& access
) goto done
;
1108 case ACCESS_ALLOWED_ACE_TYPE
:
1109 aa_ace
= (const ACCESS_ALLOWED_ACE
*)ace
;
1110 sid
= (const SID
*)&aa_ace
->SidStart
;
1111 if (token_sid_present( token
, sid
, FALSE
))
1113 unsigned int access
= aa_ace
->Mask
;
1114 map_generic_mask(&access
, mapping
);
1115 if (desired_access
& MAXIMUM_ALLOWED
)
1116 current_access
|= access
;
1118 current_access
|= (access
& ~denied_access
);
1123 /* don't bother carrying on checking if we've already got all of
1125 if (desired_access
== *granted_access
)
1130 if (desired_access
& MAXIMUM_ALLOWED
)
1131 *granted_access
= current_access
& ~denied_access
;
1133 if ((current_access
& desired_access
) == desired_access
)
1134 *granted_access
= current_access
& desired_access
;
1136 *granted_access
= 0;
1138 *status
= *granted_access
? STATUS_SUCCESS
: STATUS_ACCESS_DENIED
;
1139 return STATUS_SUCCESS
;
1142 const ACL
*token_get_default_dacl( struct token
*token
)
1144 return token
->default_dacl
;
1147 const SID
*token_get_user( struct token
*token
)
1152 const SID
*token_get_primary_group( struct token
*token
)
1154 return token
->primary_group
;
1157 int check_object_access(struct object
*obj
, unsigned int *access
)
1159 GENERIC_MAPPING mapping
;
1160 struct token
*token
= current
->token
? current
->token
: current
->process
->token
;
1161 unsigned int status
;
1164 mapping
.GenericAll
= obj
->ops
->map_access( obj
, GENERIC_ALL
);
1168 if (*access
& MAXIMUM_ALLOWED
)
1169 *access
= mapping
.GenericAll
;
1173 mapping
.GenericRead
= obj
->ops
->map_access( obj
, GENERIC_READ
);
1174 mapping
.GenericWrite
= obj
->ops
->map_access( obj
, GENERIC_WRITE
);
1175 mapping
.GenericExecute
= obj
->ops
->map_access( obj
, GENERIC_EXECUTE
);
1177 res
= token_access_check( token
, obj
->sd
, *access
, NULL
, NULL
,
1178 &mapping
, access
, &status
) == STATUS_SUCCESS
&&
1179 status
== STATUS_SUCCESS
;
1181 if (!res
) set_error( STATUS_ACCESS_DENIED
);
1186 /* open a security token */
1187 DECL_HANDLER(open_token
)
1189 if (req
->flags
& OPEN_TOKEN_THREAD
)
1191 struct thread
*thread
= get_thread_from_handle( req
->handle
, 0 );
1196 if (!thread
->token
->primary
&& thread
->token
->impersonation_level
<= SecurityAnonymous
)
1197 set_error( STATUS_CANT_OPEN_ANONYMOUS
);
1199 reply
->token
= alloc_handle( current
->process
, thread
->token
,
1200 req
->access
, req
->attributes
);
1203 set_error( STATUS_NO_TOKEN
);
1204 release_object( thread
);
1209 struct process
*process
= get_process_from_handle( req
->handle
, 0 );
1213 reply
->token
= alloc_handle( current
->process
, process
->token
, req
->access
,
1216 set_error( STATUS_NO_TOKEN
);
1217 release_object( process
);
1222 /* adjust the privileges held by a token */
1223 DECL_HANDLER(adjust_token_privileges
)
1225 struct token
*token
;
1226 unsigned int access
= TOKEN_ADJUST_PRIVILEGES
;
1228 if (req
->get_modified_state
) access
|= TOKEN_QUERY
;
1230 if ((token
= (struct token
*)get_handle_obj( current
->process
, req
->handle
,
1231 access
, &token_ops
)))
1233 const LUID_AND_ATTRIBUTES
*privs
= get_req_data();
1234 LUID_AND_ATTRIBUTES
*modified_privs
= NULL
;
1235 unsigned int priv_count
= get_req_data_size() / sizeof(LUID_AND_ATTRIBUTES
);
1236 unsigned int modified_priv_count
= 0;
1238 if (req
->get_modified_state
&& !req
->disable_all
)
1241 /* count modified privs */
1242 for (i
= 0; i
< priv_count
; i
++)
1244 struct privilege
*privilege
=
1245 token_find_privilege( token
, &privs
[i
].Luid
, FALSE
);
1246 if (privilege
&& req
->get_modified_state
)
1247 modified_priv_count
++;
1249 reply
->len
= modified_priv_count
;
1250 modified_priv_count
= min( modified_priv_count
, get_reply_max_size() / sizeof(*modified_privs
) );
1251 if (modified_priv_count
)
1252 modified_privs
= set_reply_data_size( modified_priv_count
* sizeof(*modified_privs
) );
1254 reply
->len
= modified_priv_count
* sizeof(*modified_privs
);
1256 if (req
->disable_all
)
1257 token_disable_privileges( token
);
1259 token_adjust_privileges( token
, privs
, priv_count
, modified_privs
, modified_priv_count
);
1261 release_object( token
);
1265 /* retrieves the list of privileges that may be held be the token */
1266 DECL_HANDLER(get_token_privileges
)
1268 struct token
*token
;
1270 if ((token
= (struct token
*)get_handle_obj( current
->process
, req
->handle
,
1275 LUID_AND_ATTRIBUTES
*privs
;
1276 struct privilege
*privilege
;
1278 LIST_FOR_EACH_ENTRY( privilege
, &token
->privileges
, struct privilege
, entry
)
1281 reply
->len
= priv_count
* sizeof(*privs
);
1282 if (reply
->len
<= get_reply_max_size())
1284 privs
= set_reply_data_size( priv_count
* sizeof(*privs
) );
1288 LIST_FOR_EACH_ENTRY( privilege
, &token
->privileges
, struct privilege
, entry
)
1290 luid_and_attr_from_privilege( &privs
[i
], privilege
);
1296 set_error(STATUS_BUFFER_TOO_SMALL
);
1298 release_object( token
);
1302 /* creates a duplicate of the token */
1303 DECL_HANDLER(duplicate_token
)
1305 struct token
*src_token
;
1306 struct unicode_str name
;
1307 const struct security_descriptor
*sd
;
1308 const struct object_attributes
*objattr
= get_req_object_attributes( &sd
, &name
, NULL
);
1310 if (!objattr
) return;
1312 if ((src_token
= (struct token
*)get_handle_obj( current
->process
, req
->handle
,
1316 struct token
*token
= token_duplicate( src_token
, req
->primary
, req
->impersonation_level
, sd
);
1319 reply
->new_handle
= alloc_handle_no_access_check( current
->process
, token
, req
->access
, objattr
->attributes
);
1320 release_object( token
);
1322 release_object( src_token
);
1326 /* checks the specified privileges are held by the token */
1327 DECL_HANDLER(check_token_privileges
)
1329 struct token
*token
;
1331 if ((token
= (struct token
*)get_handle_obj( current
->process
, req
->handle
,
1335 unsigned int count
= get_req_data_size() / sizeof(LUID_AND_ATTRIBUTES
);
1337 if (!token
->primary
&& token
->impersonation_level
<= SecurityAnonymous
)
1338 set_error( STATUS_BAD_IMPERSONATION_LEVEL
);
1339 else if (get_reply_max_size() >= count
* sizeof(LUID_AND_ATTRIBUTES
))
1341 LUID_AND_ATTRIBUTES
*usedprivs
= set_reply_data_size( count
* sizeof(*usedprivs
) );
1342 reply
->has_privileges
= token_check_privileges( token
, req
->all_required
, get_req_data(), count
, usedprivs
);
1345 set_error( STATUS_BUFFER_OVERFLOW
);
1346 release_object( token
);
1350 /* checks that a user represented by a token is allowed to access an object
1351 * represented by a security descriptor */
1352 DECL_HANDLER(access_check
)
1354 data_size_t sd_size
= get_req_data_size();
1355 const struct security_descriptor
*sd
= get_req_data();
1356 struct token
*token
;
1358 if (!sd_is_valid( sd
, sd_size
))
1360 set_error( STATUS_ACCESS_VIOLATION
);
1364 if ((token
= (struct token
*)get_handle_obj( current
->process
, req
->handle
,
1368 GENERIC_MAPPING mapping
;
1369 unsigned int status
;
1370 LUID_AND_ATTRIBUTES priv
;
1371 unsigned int priv_count
= 1;
1373 memset(&priv
, 0, sizeof(priv
));
1375 /* only impersonation tokens may be used with this function */
1378 set_error( STATUS_NO_IMPERSONATION_TOKEN
);
1379 release_object( token
);
1382 /* anonymous impersonation tokens can't be used */
1383 if (token
->impersonation_level
<= SecurityAnonymous
)
1385 set_error( STATUS_BAD_IMPERSONATION_LEVEL
);
1386 release_object( token
);
1390 mapping
.GenericRead
= req
->mapping_read
;
1391 mapping
.GenericWrite
= req
->mapping_write
;
1392 mapping
.GenericExecute
= req
->mapping_execute
;
1393 mapping
.GenericAll
= req
->mapping_all
;
1395 status
= token_access_check(
1396 token
, sd
, req
->desired_access
, &priv
, &priv_count
, &mapping
,
1397 &reply
->access_granted
, &reply
->access_status
);
1399 reply
->privileges_len
= priv_count
*sizeof(LUID_AND_ATTRIBUTES
);
1401 if ((priv_count
> 0) && (reply
->privileges_len
<= get_reply_max_size()))
1403 LUID_AND_ATTRIBUTES
*privs
= set_reply_data_size( priv_count
* sizeof(*privs
) );
1404 memcpy( privs
, &priv
, sizeof(priv
) );
1407 set_error( status
);
1408 release_object( token
);
1412 /* retrieves an SID from the token */
1413 DECL_HANDLER(get_token_sid
)
1415 struct token
*token
;
1419 if ((token
= (struct token
*)get_handle_obj( current
->process
, req
->handle
, TOKEN_QUERY
, &token_ops
)))
1421 const SID
*sid
= NULL
;
1423 switch (req
->which_sid
)
1426 assert(token
->user
);
1429 case TokenPrimaryGroup
:
1430 sid
= token
->primary_group
;
1436 sid
= (const SID
*)&builtin_logon_sid
;
1439 set_error( STATUS_INVALID_PARAMETER
);
1445 reply
->sid_len
= security_sid_len( sid
);
1446 if (reply
->sid_len
<= get_reply_max_size()) set_reply_data( sid
, reply
->sid_len
);
1447 else set_error( STATUS_BUFFER_TOO_SMALL
);
1449 release_object( token
);
1453 /* retrieves the groups that the user represented by the token belongs to */
1454 DECL_HANDLER(get_token_groups
)
1456 struct token
*token
;
1458 reply
->user_len
= 0;
1460 if ((token
= (struct token
*)get_handle_obj( current
->process
, req
->handle
,
1464 size_t size_needed
= sizeof(struct token_groups
);
1465 size_t sid_size
= 0;
1466 unsigned int group_count
= 0;
1467 const struct group
*group
;
1469 LIST_FOR_EACH_ENTRY( group
, &token
->groups
, const struct group
, entry
)
1472 sid_size
+= security_sid_len( &group
->sid
);
1474 size_needed
+= sid_size
;
1475 /* attributes size */
1476 size_needed
+= sizeof(unsigned int) * group_count
;
1478 /* reply buffer contains size_needed bytes formatted as:
1481 unsigned int attrib[count];
1484 user_len includes extra data needed for TOKEN_GROUPS representation,
1485 required caller buffer size calculated here to avoid extra server call */
1486 reply
->user_len
= FIELD_OFFSET( TOKEN_GROUPS
, Groups
[group_count
] ) + sid_size
;
1488 if (reply
->user_len
<= get_reply_max_size())
1490 struct token_groups
*tg
= set_reply_data_size( size_needed
);
1493 unsigned int *attr_ptr
= (unsigned int *)(tg
+ 1);
1494 SID
*sid_ptr
= (SID
*)(attr_ptr
+ group_count
);
1496 tg
->count
= group_count
;
1498 LIST_FOR_EACH_ENTRY( group
, &token
->groups
, const struct group
, entry
)
1502 if (group
->mandatory
) *attr_ptr
|= SE_GROUP_MANDATORY
;
1503 if (group
->def
) *attr_ptr
|= SE_GROUP_ENABLED_BY_DEFAULT
;
1504 if (group
->enabled
) *attr_ptr
|= SE_GROUP_ENABLED
;
1505 if (group
->owner
) *attr_ptr
|= SE_GROUP_OWNER
;
1506 if (group
->deny_only
) *attr_ptr
|= SE_GROUP_USE_FOR_DENY_ONLY
;
1507 if (group
->resource
) *attr_ptr
|= SE_GROUP_RESOURCE
;
1508 if (group
->logon
) *attr_ptr
|= SE_GROUP_LOGON_ID
;
1510 memcpy(sid_ptr
, &group
->sid
, security_sid_len( &group
->sid
));
1512 sid_ptr
= (SID
*)((char *)sid_ptr
+ security_sid_len( &group
->sid
));
1517 else set_error( STATUS_BUFFER_TOO_SMALL
);
1519 release_object( token
);
1523 DECL_HANDLER(get_token_impersonation_level
)
1525 struct token
*token
;
1527 if ((token
= (struct token
*)get_handle_obj( current
->process
, req
->handle
,
1532 set_error( STATUS_INVALID_PARAMETER
);
1534 reply
->impersonation_level
= token
->impersonation_level
;
1536 release_object( token
);
1540 DECL_HANDLER(get_token_statistics
)
1542 struct token
*token
;
1544 if ((token
= (struct token
*)get_handle_obj( current
->process
, req
->handle
,
1548 reply
->token_id
= token
->token_id
;
1549 reply
->modified_id
= token
->modified_id
;
1550 reply
->primary
= token
->primary
;
1551 reply
->impersonation_level
= token
->impersonation_level
;
1552 reply
->group_count
= list_count( &token
->groups
);
1553 reply
->privilege_count
= list_count( &token
->privileges
);
1555 release_object( token
);
1559 DECL_HANDLER(get_token_default_dacl
)
1561 struct token
*token
;
1565 if ((token
= (struct token
*)get_handle_obj( current
->process
, req
->handle
,
1569 if (token
->default_dacl
)
1570 reply
->acl_len
= token
->default_dacl
->AclSize
;
1572 if (reply
->acl_len
<= get_reply_max_size())
1574 ACL
*acl_reply
= set_reply_data_size( reply
->acl_len
);
1576 memcpy( acl_reply
, token
->default_dacl
, reply
->acl_len
);
1578 else set_error( STATUS_BUFFER_TOO_SMALL
);
1580 release_object( token
);
1584 DECL_HANDLER(set_token_default_dacl
)
1586 struct token
*token
;
1588 if ((token
= (struct token
*)get_handle_obj( current
->process
, req
->handle
,
1589 TOKEN_ADJUST_DEFAULT
,
1592 const ACL
*acl
= get_req_data();
1593 unsigned int acl_size
= get_req_data_size();
1595 free( token
->default_dacl
);
1596 token
->default_dacl
= NULL
;
1599 token
->default_dacl
= memdup( acl
, acl_size
);
1601 release_object( token
);