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147 lines
5.3 KiB
C
147 lines
5.3 KiB
C
/*
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* Security Management
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*
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* Copyright (C) 2005 Robert Shearman
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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extern const LUID SeIncreaseQuotaPrivilege;
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extern const LUID SeSecurityPrivilege;
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extern const LUID SeTakeOwnershipPrivilege;
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extern const LUID SeLoadDriverPrivilege;
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extern const LUID SeSystemProfilePrivilege;
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extern const LUID SeSystemtimePrivilege;
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extern const LUID SeProfileSingleProcessPrivilege;
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extern const LUID SeIncreaseBasePriorityPrivilege;
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extern const LUID SeCreatePagefilePrivilege;
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extern const LUID SeBackupPrivilege;
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extern const LUID SeRestorePrivilege;
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extern const LUID SeShutdownPrivilege;
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extern const LUID SeDebugPrivilege;
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extern const LUID SeSystemEnvironmentPrivilege;
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extern const LUID SeChangeNotifyPrivilege;
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extern const LUID SeRemoteShutdownPrivilege;
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extern const LUID SeUndockPrivilege;
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extern const LUID SeManageVolumePrivilege;
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extern const LUID SeImpersonatePrivilege;
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extern const LUID SeCreateGlobalPrivilege;
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extern const PSID security_world_sid;
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extern const PSID security_local_user_sid;
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extern const PSID security_local_system_sid;
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extern const PSID security_builtin_users_sid;
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extern const PSID security_builtin_admins_sid;
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/* token functions */
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extern struct token *token_create_admin(void);
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extern struct token *token_duplicate( struct token *src_token, unsigned primary,
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int impersonation_level );
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extern int token_check_privileges( struct token *token, int all_required,
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const LUID_AND_ATTRIBUTES *reqprivs,
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unsigned int count, LUID_AND_ATTRIBUTES *usedprivs);
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extern const ACL *token_get_default_dacl( struct token *token );
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extern const SID *token_get_user( struct token *token );
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extern const SID *token_get_primary_group( struct token *token );
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extern int token_sid_present( struct token *token, const SID *sid, int deny);
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static inline const ACE_HEADER *ace_next( const ACE_HEADER *ace )
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{
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return (const ACE_HEADER *)((const char *)ace + ace->AceSize);
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}
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static inline size_t security_sid_len( const SID *sid )
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{
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return offsetof( SID, SubAuthority[sid->SubAuthorityCount] );
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}
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static inline int security_equal_sid( const SID *sid1, const SID *sid2 )
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{
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return ((sid1->SubAuthorityCount == sid2->SubAuthorityCount) &&
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!memcmp( sid1, sid2, security_sid_len( sid1 )));
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}
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extern void security_set_thread_token( struct thread *thread, obj_handle_t handle );
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extern const SID *security_unix_uid_to_sid( uid_t uid );
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extern int check_object_access( struct object *obj, unsigned int *access );
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static inline int thread_single_check_privilege( struct thread *thread, const LUID *priv)
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{
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struct token *token = thread_get_impersonation_token( thread );
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const LUID_AND_ATTRIBUTES privs = { *priv, 0 };
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if (!token) return FALSE;
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return token_check_privileges( token, TRUE, &privs, 1, NULL );
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}
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/* security descriptor helper functions */
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extern int sd_is_valid( const struct security_descriptor *sd, data_size_t size );
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/* gets the discretionary access control list from a security descriptor */
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static inline const ACL *sd_get_dacl( const struct security_descriptor *sd, int *present )
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{
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*present = (sd->control & SE_DACL_PRESENT) != 0;
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if (sd->dacl_len)
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return (const ACL *)((const char *)(sd + 1) +
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sd->owner_len + sd->group_len + sd->sacl_len);
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else
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return NULL;
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}
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/* gets the system access control list from a security descriptor */
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static inline const ACL *sd_get_sacl( const struct security_descriptor *sd, int *present )
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{
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*present = (sd->control & SE_SACL_PRESENT) != 0;
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if (sd->sacl_len)
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return (const ACL *)((const char *)(sd + 1) +
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sd->owner_len + sd->group_len);
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else
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return NULL;
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}
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/* gets the owner from a security descriptor */
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static inline const SID *sd_get_owner( const struct security_descriptor *sd )
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{
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if (sd->owner_len)
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return (const SID *)(sd + 1);
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else
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return NULL;
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}
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/* gets the primary group from a security descriptor */
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static inline const SID *sd_get_group( const struct security_descriptor *sd )
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{
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if (sd->group_len)
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return (const SID *)((const char *)(sd + 1) + sd->owner_len);
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else
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return NULL;
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}
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/* determines whether an object_attributes struct is valid in a buffer
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* and calls set_error appropriately */
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extern int objattr_is_valid( const struct object_attributes *objattr, data_size_t size );
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static inline void objattr_get_name( const struct object_attributes *objattr, struct unicode_str *name )
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{
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name->len = ((objattr->name_len) / sizeof(WCHAR)) * sizeof(WCHAR);
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name->str = (const WCHAR *)objattr + (sizeof(*objattr) + objattr->sd_len) / sizeof(WCHAR);
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}
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