c61ada9bd3
* security.h (__sec_user): Add "access2" argument. (sec_acl): Add "original" and "access2" arguments. (sec_user): Add "sid2" and "access2" argument. Remove dependence on allow_ntsec. (sec_user_nih): Ditto. * sec_helper.cc (__sec_user): Add "has_security" test. Call sec_acl with new arguments, letting it handle original_sid. (sec_acl): Add "original" and "access2" arguments. Handle original_sid depending on flag but avoiding duplicates. Use "access2" for sid2. * pinfo.cc (pinfo::init): Use security attributes created by sec_user when creating the mapping. * security.cc (create_token): Adjust arguments in call to sec_acl. Call sec_user instead of __sec_user. * syscall.cc (seteuid32): Adjust arguments in call to sec_acl. Remove now unnecessary test. Remove useless conversions to psid. * dcrt0.cc (dll_crt0_1): Call cygsid::init before pinfo_init.
282 lines
8.3 KiB
C++
282 lines
8.3 KiB
C++
/* security.h: security declarations
|
|
|
|
Copyright 2000, 2001, 2002 Red Hat, Inc.
|
|
|
|
This file is part of Cygwin.
|
|
|
|
This software is a copyrighted work licensed under the terms of the
|
|
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
|
|
details. */
|
|
|
|
#ifndef _SECURITY_H
|
|
#define _SECURITY_H
|
|
|
|
#include <accctrl.h>
|
|
|
|
#define DEFAULT_UID DOMAIN_USER_RID_ADMIN
|
|
#define UNKNOWN_UID 400 /* Non conflicting number */
|
|
#define UNKNOWN_GID 401
|
|
|
|
#define MAX_SID_LEN 40
|
|
#define MAX_DACL_LEN(n) (sizeof (ACL) \
|
|
+ (n) * (sizeof (ACCESS_ALLOWED_ACE) - sizeof (DWORD) + MAX_SID_LEN))
|
|
|
|
#define NO_SID ((PSID)NULL)
|
|
|
|
class cygpsid {
|
|
protected:
|
|
PSID psid;
|
|
public:
|
|
cygpsid () {}
|
|
cygpsid (PSID nsid) { psid = nsid; }
|
|
operator const PSID () { return psid; }
|
|
const PSID operator= (PSID nsid) { return psid = nsid;}
|
|
__uid32_t get_id (BOOL search_grp, int *type = NULL);
|
|
int get_uid () { return get_id (FALSE); }
|
|
int get_gid () { return get_id (TRUE); }
|
|
|
|
char *string (char *nsidstr) const;
|
|
|
|
bool operator== (const PSID nsid) const
|
|
{
|
|
if (!psid || !nsid)
|
|
return nsid == psid;
|
|
return EqualSid (psid, nsid);
|
|
}
|
|
bool operator!= (const PSID nsid) const
|
|
{ return !(*this == nsid); }
|
|
bool operator== (const char *nsidstr) const;
|
|
bool operator!= (const char *nsidstr) const
|
|
{ return !(*this == nsidstr); }
|
|
|
|
void debug_print (const char *prefix = NULL) const
|
|
{
|
|
char buf[256];
|
|
debug_printf ("%s %s", prefix ?: "", string (buf) ?: "NULL");
|
|
}
|
|
};
|
|
|
|
class cygsid : public cygpsid {
|
|
char sbuf[MAX_SID_LEN];
|
|
|
|
const PSID getfromstr (const char *nsidstr);
|
|
PSID get_sid (DWORD s, DWORD cnt, DWORD *r);
|
|
|
|
inline const PSID assign (const PSID nsid)
|
|
{
|
|
if (!nsid)
|
|
psid = NO_SID;
|
|
else
|
|
{
|
|
psid = (PSID) sbuf;
|
|
CopySid (MAX_SID_LEN, psid, nsid);
|
|
}
|
|
return psid;
|
|
}
|
|
|
|
public:
|
|
static void init();
|
|
inline operator const PSID () { return psid; }
|
|
|
|
inline const PSID operator= (cygsid &nsid)
|
|
{ return assign (nsid); }
|
|
inline const PSID operator= (const PSID nsid)
|
|
{ return assign (nsid); }
|
|
inline const PSID operator= (const char *nsidstr)
|
|
{ return getfromstr (nsidstr); }
|
|
|
|
inline cygsid () : cygpsid ((PSID) sbuf) {}
|
|
inline cygsid (const PSID nsid) { *this = nsid; }
|
|
inline cygsid (const char *nstrsid) { *this = nstrsid; }
|
|
|
|
inline PSID set () { return psid = (PSID) sbuf; }
|
|
|
|
BOOL getfrompw (const struct passwd *pw);
|
|
BOOL getfromgr (const struct __group32 *gr);
|
|
};
|
|
|
|
typedef enum { cygsidlist_empty, cygsidlist_alloc, cygsidlist_auto } cygsidlist_type;
|
|
class cygsidlist {
|
|
int maxcount;
|
|
public:
|
|
int count;
|
|
cygsid *sids;
|
|
cygsidlist_type type;
|
|
|
|
cygsidlist (cygsidlist_type t, int m)
|
|
{
|
|
type = t;
|
|
count = 0;
|
|
maxcount = m;
|
|
if (t == cygsidlist_alloc)
|
|
sids = alloc_sids (m);
|
|
else
|
|
sids = new cygsid [m];
|
|
}
|
|
~cygsidlist () { if (type == cygsidlist_auto) delete [] sids; }
|
|
|
|
BOOL add (const PSID nsi) /* Only with auto for now */
|
|
{
|
|
if (count >= maxcount)
|
|
{
|
|
cygsid *tmp = new cygsid [ 2 * maxcount];
|
|
if (!tmp)
|
|
return FALSE;
|
|
maxcount *= 2;
|
|
for (int i = 0; i < count; ++i)
|
|
tmp[i] = sids[i];
|
|
delete [] sids;
|
|
sids = tmp;
|
|
}
|
|
sids[count++] = nsi;
|
|
return TRUE;
|
|
}
|
|
BOOL add (cygsid &nsi) { return add ((PSID) nsi); }
|
|
BOOL add (const char *sidstr)
|
|
{ cygsid nsi (sidstr); return add (nsi); }
|
|
BOOL addfromgr (struct __group32 *gr) /* Only with alloc */
|
|
{ return sids[count++].getfromgr (gr); }
|
|
|
|
BOOL operator+= (cygsid &si) { return add (si); }
|
|
BOOL operator+= (const char *sidstr) { return add (sidstr); }
|
|
BOOL operator+= (const PSID psid) { return add (psid); }
|
|
|
|
int position (const PSID sid) const
|
|
{
|
|
for (int i = 0; i < count; ++i)
|
|
if (sids[i] == sid)
|
|
return i;
|
|
return -1;
|
|
}
|
|
|
|
BOOL contains (const PSID sid) const { return position (sid) >= 0; }
|
|
cygsid *alloc_sids (int n);
|
|
void free_sids ();
|
|
void debug_print (const char *prefix = NULL) const
|
|
{
|
|
debug_printf ("-- begin sidlist ---");
|
|
if (!count)
|
|
debug_printf ("No elements");
|
|
for (int i = 0; i < count; ++i)
|
|
sids[i].debug_print (prefix);
|
|
debug_printf ("-- ende sidlist ---");
|
|
}
|
|
};
|
|
|
|
class user_groups {
|
|
public:
|
|
cygsid pgsid;
|
|
cygsidlist sgsids;
|
|
BOOL ischanged;
|
|
|
|
BOOL issetgroups () const { return (sgsids.type == cygsidlist_alloc); }
|
|
void update_supp (const cygsidlist &newsids)
|
|
{
|
|
sgsids.free_sids ();
|
|
sgsids = newsids;
|
|
ischanged = TRUE;
|
|
}
|
|
void clear_supp ()
|
|
{
|
|
if (issetgroups ())
|
|
{
|
|
sgsids.free_sids ();
|
|
ischanged = TRUE;
|
|
}
|
|
}
|
|
void update_pgrp (const PSID sid)
|
|
{
|
|
pgsid = sid;
|
|
ischanged = TRUE;
|
|
}
|
|
};
|
|
|
|
extern cygsid well_known_null_sid;
|
|
extern cygsid well_known_world_sid;
|
|
extern cygsid well_known_local_sid;
|
|
extern cygsid well_known_creator_owner_sid;
|
|
extern cygsid well_known_creator_group_sid;
|
|
extern cygsid well_known_dialup_sid;
|
|
extern cygsid well_known_network_sid;
|
|
extern cygsid well_known_batch_sid;
|
|
extern cygsid well_known_interactive_sid;
|
|
extern cygsid well_known_service_sid;
|
|
extern cygsid well_known_authenticated_users_sid;
|
|
extern cygsid well_known_system_sid;
|
|
extern cygsid well_known_admins_sid;
|
|
|
|
inline BOOL
|
|
legal_sid_type (SID_NAME_USE type)
|
|
{
|
|
return type == SidTypeUser || type == SidTypeGroup
|
|
|| type == SidTypeAlias || type == SidTypeWellKnownGroup;
|
|
}
|
|
|
|
extern bool allow_ntea;
|
|
extern bool allow_ntsec;
|
|
extern bool allow_smbntsec;
|
|
|
|
/* File manipulation */
|
|
int __stdcall set_process_privileges ();
|
|
int __stdcall get_file_attribute (int, const char *, mode_t *,
|
|
__uid32_t * = NULL, __gid32_t * = NULL);
|
|
int __stdcall set_file_attribute (int, const char *, int);
|
|
int __stdcall set_file_attribute (int, const char *, __uid32_t, __gid32_t, int);
|
|
int __stdcall get_object_attribute (HANDLE handle, SE_OBJECT_TYPE object_type, mode_t *,
|
|
__uid32_t * = NULL, __gid32_t * = NULL);
|
|
LONG __stdcall read_sd(const char *file, PSECURITY_DESCRIPTOR sd_buf, LPDWORD sd_size);
|
|
LONG __stdcall write_sd(const char *file, PSECURITY_DESCRIPTOR sd_buf, DWORD sd_size);
|
|
BOOL __stdcall add_access_allowed_ace (PACL acl, int offset, DWORD attributes, PSID sid, size_t &len_add, DWORD inherit);
|
|
BOOL __stdcall add_access_denied_ace (PACL acl, int offset, DWORD attributes, PSID sid, size_t &len_add, DWORD inherit);
|
|
int __stdcall check_file_access (const char *, int);
|
|
|
|
void set_security_attribute (int attribute, PSECURITY_ATTRIBUTES psa,
|
|
void *sd_buf, DWORD sd_buf_size);
|
|
|
|
bool get_sids_info (cygpsid, cygpsid, __uid32_t * , __gid32_t *);
|
|
|
|
/* Try a subauthentication. */
|
|
HANDLE subauth (struct passwd *pw);
|
|
/* Try creating a token directly. */
|
|
HANDLE create_token (cygsid &usersid, user_groups &groups, struct passwd * pw);
|
|
/* Verify an existing token */
|
|
BOOL verify_token (HANDLE token, cygsid &usersid, user_groups &groups, BOOL * pintern = NULL);
|
|
|
|
/* Extract U-domain\user field from passwd entry. */
|
|
void extract_nt_dom_user (const struct passwd *pw, char *domain, char *user);
|
|
/* Get default logonserver for a domain. */
|
|
BOOL get_logon_server (const char * domain, char * server, WCHAR *wserver = NULL);
|
|
|
|
/* sec_helper.cc: Security helper functions. */
|
|
int set_process_privilege (const char *privilege, bool enable = true, bool use_thread = false);
|
|
|
|
/* shared.cc: */
|
|
/* Retrieve a security descriptor that allows all access */
|
|
SECURITY_DESCRIPTOR *__stdcall get_null_sd (void);
|
|
|
|
/* Various types of security attributes for use in Create* functions. */
|
|
extern SECURITY_ATTRIBUTES sec_none, sec_none_nih, sec_all, sec_all_nih;
|
|
extern SECURITY_ATTRIBUTES *__stdcall __sec_user (PVOID sa_buf, PSID sid1, PSID sid2,
|
|
DWORD access2, BOOL inherit)
|
|
__attribute__ ((regparm (3)));
|
|
extern BOOL sec_acl (PACL acl, bool original, bool admins, PSID sid1 = NO_SID,
|
|
PSID sid2 = NO_SID, DWORD access2 = 0);
|
|
|
|
int __stdcall NTReadEA (const char *file, const char *attrname, char *buf, int len);
|
|
BOOL __stdcall NTWriteEA (const char *file, const char *attrname, const char *buf, int len);
|
|
PSECURITY_DESCRIPTOR alloc_sd (__uid32_t uid, __gid32_t gid, int attribute,
|
|
PSECURITY_DESCRIPTOR sd_ret, DWORD *sd_size_ret);
|
|
|
|
extern inline SECURITY_ATTRIBUTES *
|
|
sec_user_nih (char sa_buf[], PSID sid1 = NULL, PSID sid2 = NULL, DWORD access2 = 0)
|
|
{
|
|
return __sec_user (sa_buf, sid1, sid2, access2, FALSE);
|
|
}
|
|
|
|
extern inline SECURITY_ATTRIBUTES *
|
|
sec_user (char sa_buf[], PSID sid1 = NULL, PSID sid2 = NULL, DWORD access2 = 0)
|
|
{
|
|
return __sec_user (sa_buf, sid1, sid2, access2, TRUE);
|
|
}
|
|
#endif /*_SECURITY_H*/
|