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2b0a111fcf
* security.h: New define `NO_SID'. Remove declarations of functions
moved to methods into class cygsid.
(class cygsid): Declare new methods `getfromstr', `get_sid',
`getfrompw', `getfromgr', `get_rid', `get_uid', `get_gid', `string'
and new constructors and operators =, == and !=.
Declare new global cygsids `well_known_XXX_sid' substituting the
corresponding `get_XXX_sid' functions. Remove declarations of
these functions.
* sec_helper.cc (well_known_admin_sid): New global variable.
(well_known_system_sid): Ditto
(well_known_creator_owner_sid): Ditto
(well_known_world_sid): Ditto
(cygsid::string): New method, substituting `convert_sid_to_string_sid'.
(cygsid::get_sid): New method, substituting `get_sid'.
(cygsid::getfromstr): New method, substituting
`convert_string_sid_to_sid'.
(cygsid::getfrompw): New method, substituting `get_pw_sid'.
(cygsid::getfromgr): New method, substituting `get_gr_sid'.
(cygsid::get_id): New method, substituting `get_id_from_sid'.
(get_admin_sid): Eliminated.
(get_system_sid): Ditto.
(get_creator_owner_sid): Ditto.
(get_world_sid): Ditto.
* grp.cc: Use new cygsid methods and well known sids throughout.
* registry.cc: Ditto.
* sec_acl.cc: Ditto.
* security.cc: Ditto.
* shared.cc: Ditto.
* syscalls.cc (seteuid): Ditto. Eliminate redundant conditional.
* uinfo.cc (internal_getlogin): Ditto.
* spawn.cc (spawn_guts) Revert previous patch.
125 lines
4.3 KiB
C++
125 lines
4.3 KiB
C++
/* security.h: security declarations
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Copyright 2000, 2001 Red Hat, Inc.
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#define DONT_INHERIT (0)
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#define INHERIT_ALL (CONTAINER_INHERIT_ACE|OBJECT_INHERIT_ACE)
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#define INHERIT_ONLY (INHERIT_ONLY_ACE|CONTAINER_INHERIT_ACE|OBJECT_INHERIT_ACE)
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#define DEFAULT_UID DOMAIN_USER_RID_ADMIN
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#define DEFAULT_GID DOMAIN_ALIAS_RID_ADMINS
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#define MAX_SID_LEN 40
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#define NO_SID ((PSID)NULL)
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class cygsid {
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PSID psid;
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char sbuf[MAX_SID_LEN];
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const PSID getfromstr (const char *nsidstr);
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PSID get_sid (DWORD s, DWORD cnt, DWORD *r);
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public:
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inline cygsid () : psid ((PSID) sbuf) {}
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inline cygsid (const PSID nsid) { *this = nsid; }
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inline cygsid (const char *nstrsid) { *this = nstrsid; }
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inline PSID set () { return psid = (PSID) sbuf; }
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BOOL getfrompw (struct passwd *pw);
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BOOL getfromgr (struct group *gr);
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int get_id (BOOL search_grp, int *type = NULL);
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inline int get_uid () { return get_id (FALSE); }
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inline int get_gid () { return get_id (TRUE); }
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char *string (char *nsidstr);
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inline const PSID operator= (const PSID nsid)
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{
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if (!nsid)
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psid = NULL;
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else
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{
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psid = (PSID) sbuf;
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CopySid (MAX_SID_LEN, psid, nsid);
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}
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return psid;
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}
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inline const PSID operator= (const char *nsidstr)
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{ return getfromstr (nsidstr); }
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inline BOOL operator== (const PSID nsid) const
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{
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if (!psid || !nsid)
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return nsid == psid;
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return EqualSid (psid, nsid);
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}
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inline BOOL operator== (const char *nsidstr) const
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{
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cygsid nsid (nsidstr);
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return *this == nsid;
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}
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inline BOOL operator!= (const PSID nsid) const
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{ return !(*this == nsid); }
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inline BOOL operator!= (const char *nsidstr) const
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{ return !(*this == nsidstr); }
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inline operator const PSID () { return psid; }
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};
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extern cygsid well_known_admin_sid;
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extern cygsid well_known_system_sid;
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extern cygsid well_known_creator_owner_sid;
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extern cygsid well_known_world_sid;
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extern BOOL allow_ntsec;
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extern BOOL allow_smbntsec;
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/* These both functions are needed to allow walking through the passwd
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and group lists so they are somehow security related. Besides that
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I didn't find a better place to declare them. */
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extern struct passwd *internal_getpwent (int);
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extern struct group *internal_getgrent (int);
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/* File manipulation */
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int __stdcall set_process_privileges ();
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int __stdcall get_file_attribute (int, const char *, int *,
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uid_t * = NULL, gid_t * = NULL);
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int __stdcall set_file_attribute (int, const char *, int);
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int __stdcall set_file_attribute (int, const char *, uid_t, gid_t, int, const char *);
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LONG __stdcall read_sd(const char *file, PSECURITY_DESCRIPTOR sd_buf, LPDWORD sd_size);
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LONG __stdcall write_sd(const char *file, PSECURITY_DESCRIPTOR sd_buf, DWORD sd_size);
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BOOL __stdcall add_access_allowed_ace (PACL acl, int offset, DWORD attributes, PSID sid, size_t &len_add, DWORD inherit);
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BOOL __stdcall add_access_denied_ace (PACL acl, int offset, DWORD attributes, PSID sid, size_t &len_add, DWORD inherit);
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/* Try a subauthentication. */
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HANDLE subauth (struct passwd *pw);
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/* sec_helper.cc: Security helper functions. */
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BOOL __stdcall is_grp_member (uid_t uid, gid_t gid);
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/* `lookup_name' should be called instead of LookupAccountName.
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* logsrv may be NULL, in this case only the local system is used for lookup.
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* The buffer for ret_sid (40 Bytes) has to be allocated by the caller! */
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BOOL __stdcall lookup_name (const char *, const char *, PSID);
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int set_process_privilege (const char *privilege, BOOL enable = TRUE);
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/* shared.cc: */
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/* Retrieve a security descriptor that allows all access */
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SECURITY_DESCRIPTOR *__stdcall get_null_sd (void);
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/* Various types of security attributes for use in Create* functions. */
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extern SECURITY_ATTRIBUTES sec_none, sec_none_nih, sec_all, sec_all_nih;
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extern SECURITY_ATTRIBUTES *__stdcall sec_user (PVOID sa_buf, PSID sid2 = NULL, BOOL inherit = TRUE);
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extern SECURITY_ATTRIBUTES *__stdcall sec_user_nih (PVOID sa_buf, PSID sid2 = NULL);
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int __stdcall NTReadEA (const char *file, const char *attrname, char *buf, int len);
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BOOL __stdcall NTWriteEA (const char *file, const char *attrname, char *buf, int len);
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